Add gops agentv0.10.2-dev

74 files changed, 46605 insertions, 0 deletions

diff --git a/vendor/github.com/google/gops/agent/LICENSE b/vendor/github.com/google/gops/agent/LICENSE
new file mode 100644
index 00000000..55e52a01
--- /dev/null
+++ b/vendor/github.com/google/gops/agent/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2016 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/google/gops/agent/agent.go b/vendor/github.com/google/gops/agent/agent.go
new file mode 100644
index 00000000..57083918
--- /dev/null
+++ b/vendor/github.com/google/gops/agent/agent.go
@@ -0,0 +1,237 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package agent provides hooks programs can register to retrieve
+// diagnostics data by using gops.
+package agent
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net"
+	"os"
+	gosignal "os/signal"
+	"runtime"
+	"runtime/pprof"
+	"runtime/trace"
+	"strconv"
+	"sync"
+	"time"
+
+	"bufio"
+
+	"github.com/google/gops/internal"
+	"github.com/google/gops/signal"
+	"github.com/kardianos/osext"
+)
+
+const defaultAddr = "127.0.0.1:0"
+
+var (
+	mu       sync.Mutex
+	portfile string
+	listener net.Listener
+
+	units = []string{" bytes", "KB", "MB", "GB", "TB", "PB"}
+)
+
+// Options allows configuring the started agent.
+type Options struct {
+	// Addr is the host:port the agent will be listening at.
+	// Optional.
+	Addr string
+
+	// NoShutdownCleanup tells the agent not to automatically cleanup
+	// resources if the running process receives an interrupt.
+	// Optional.
+	NoShutdownCleanup bool
+}
+
+// Listen starts the gops agent on a host process. Once agent started, users
+// can use the advanced gops features. The agent will listen to Interrupt
+// signals and exit the process, if you need to perform further work on the
+// Interrupt signal use the options parameter to configure the agent
+// accordingly.
+//
+// Note: The agent exposes an endpoint via a TCP connection that can be used by
+// any program on the system. Review your security requirements before starting
+// the agent.
+func Listen(opts *Options) error {
+	mu.Lock()
+	defer mu.Unlock()
+
+	if opts == nil {
+		opts = &Options{}
+	}
+	if portfile != "" {
+		return fmt.Errorf("gops: agent already listening at: %v", listener.Addr())
+	}
+
+	gopsdir, err := internal.ConfigDir()
+	if err != nil {
+		return err
+	}
+	err = os.MkdirAll(gopsdir, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	if !opts.NoShutdownCleanup {
+		gracefulShutdown()
+	}
+
+	addr := opts.Addr
+	if addr == "" {
+		addr = defaultAddr
+	}
+	ln, err := net.Listen("tcp", addr)
+	if err != nil {
+		return err
+	}
+	listener = ln
+	port := listener.Addr().(*net.TCPAddr).Port
+	portfile = fmt.Sprintf("%s/%d", gopsdir, os.Getpid())
+	err = ioutil.WriteFile(portfile, []byte(strconv.Itoa(port)), os.ModePerm)
+	if err != nil {
+		return err
+	}
+
+	go listen()
+	return nil
+}
+
+func listen() {
+	buf := make([]byte, 1)
+	for {
+		fd, err := listener.Accept()
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "gops: %v", err)
+			if netErr, ok := err.(net.Error); ok && !netErr.Temporary() {
+				break
+			}
+			continue
+		}
+		if _, err := fd.Read(buf); err != nil {
+			fmt.Fprintf(os.Stderr, "gops: %v", err)
+			continue
+		}
+		if err := handle(fd, buf); err != nil {
+			fmt.Fprintf(os.Stderr, "gops: %v", err)
+			continue
+		}
+		fd.Close()
+	}
+}
+
+func gracefulShutdown() {
+	c := make(chan os.Signal, 1)
+	gosignal.Notify(c, os.Interrupt)
+	go func() {
+		// cleanup the socket on shutdown.
+		<-c
+		Close()
+		os.Exit(1)
+	}()
+}
+
+// Close closes the agent, removing temporary files and closing the TCP listener.
+// If no agent is listening, Close does nothing.
+func Close() {
+	mu.Lock()
+	defer mu.Unlock()
+
+	if portfile != "" {
+		os.Remove(portfile)
+		portfile = ""
+	}
+	if listener != nil {
+		listener.Close()
+	}
+}
+
+func formatBytes(val uint64) string {
+	var i int
+	var target uint64
+	for i = range units {
+		target = 1 << uint(10*(i+1))
+		if val < target {
+			break
+		}
+	}
+	if i > 0 {
+		return fmt.Sprintf("%0.2f%s (%d bytes)", float64(val)/(float64(target)/1024), units[i], val)
+	}
+	return fmt.Sprintf("%d bytes", val)
+}
+
+func handle(conn io.Writer, msg []byte) error {
+	switch msg[0] {
+	case signal.StackTrace:
+		return pprof.Lookup("goroutine").WriteTo(conn, 2)
+	case signal.GC:
+		runtime.GC()
+		_, err := conn.Write([]byte("ok"))
+		return err
+	case signal.MemStats:
+		var s runtime.MemStats
+		runtime.ReadMemStats(&s)
+		fmt.Fprintf(conn, "alloc: %v\n", formatBytes(s.Alloc))
+		fmt.Fprintf(conn, "total-alloc: %v\n", formatBytes(s.TotalAlloc))
+		fmt.Fprintf(conn, "sys: %v\n", formatBytes(s.Sys))
+		fmt.Fprintf(conn, "lookups: %v\n", s.Lookups)
+		fmt.Fprintf(conn, "mallocs: %v\n", s.Mallocs)
+		fmt.Fprintf(conn, "frees: %v\n", s.Frees)
+		fmt.Fprintf(conn, "heap-alloc: %v\n", formatBytes(s.HeapAlloc))
+		fmt.Fprintf(conn, "heap-sys: %v\n", formatBytes(s.HeapSys))
+		fmt.Fprintf(conn, "heap-idle: %v\n", formatBytes(s.HeapIdle))
+		fmt.Fprintf(conn, "heap-in-use: %v\n", formatBytes(s.HeapInuse))
+		fmt.Fprintf(conn, "heap-released: %v\n", formatBytes(s.HeapReleased))
+		fmt.Fprintf(conn, "heap-objects: %v\n", s.HeapObjects)
+		fmt.Fprintf(conn, "stack-in-use: %v\n", formatBytes(s.StackInuse))
+		fmt.Fprintf(conn, "stack-sys: %v\n", formatBytes(s.StackSys))
+		fmt.Fprintf(conn, "next-gc: when heap-alloc >= %v\n", formatBytes(s.NextGC))
+		lastGC := "-"
+		if s.LastGC != 0 {
+			lastGC = fmt.Sprint(time.Unix(0, int64(s.LastGC)))
+		}
+		fmt.Fprintf(conn, "last-gc: %v\n", lastGC)
+		fmt.Fprintf(conn, "gc-pause: %v\n", time.Duration(s.PauseTotalNs))
+		fmt.Fprintf(conn, "num-gc: %v\n", s.NumGC)
+		fmt.Fprintf(conn, "enable-gc: %v\n", s.EnableGC)
+		fmt.Fprintf(conn, "debug-gc: %v\n", s.DebugGC)
+	case signal.Version:
+		fmt.Fprintf(conn, "%v\n", runtime.Version())
+	case signal.HeapProfile:
+		pprof.WriteHeapProfile(conn)
+	case signal.CPUProfile:
+		if err := pprof.StartCPUProfile(conn); err != nil {
+			return err
+		}
+		time.Sleep(30 * time.Second)
+		pprof.StopCPUProfile()
+	case signal.Stats:
+		fmt.Fprintf(conn, "goroutines: %v\n", runtime.NumGoroutine())
+		fmt.Fprintf(conn, "OS threads: %v\n", pprof.Lookup("threadcreate").Count())
+		fmt.Fprintf(conn, "GOMAXPROCS: %v\n", runtime.GOMAXPROCS(0))
+		fmt.Fprintf(conn, "num CPU: %v\n", runtime.NumCPU())
+	case signal.BinaryDump:
+		path, err := osext.Executable()
+		if err != nil {
+			return err
+		}
+		f, err := os.Open(path)
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+
+		_, err = bufio.NewReader(f).WriteTo(conn)
+		return err
+	case signal.Trace:
+		trace.Start(conn)
+		time.Sleep(5 * time.Second)
+		trace.Stop()
+	}
+	return nil
+}
diff --git a/vendor/github.com/google/gops/internal/LICENSE b/vendor/github.com/google/gops/internal/LICENSE
new file mode 100644
index 00000000..55e52a01
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2016 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/google/gops/internal/dwarf/dwarf.go b/vendor/github.com/google/gops/internal/dwarf/dwarf.go
new file mode 100644
index 00000000..c72ef5b0
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/dwarf/dwarf.go
@@ -0,0 +1,600 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package dwarf generates DWARF debugging information.
+// DWARF generation is split between the compiler and the linker,
+// this package contains the shared code.
+package dwarf
+
+import (
+	"fmt"
+)
+
+// InfoPrefix is the prefix for all the symbols containing DWARF info entries.
+const InfoPrefix = "go.info."
+
+// Sym represents a symbol.
+type Sym interface {
+}
+
+// A Var represents a local variable or a function parameter.
+type Var struct {
+	Name   string
+	Abbrev int // Either DW_ABRV_AUTO or DW_ABRV_PARAM
+	Offset int32
+	Type   Sym
+	Link   *Var
+}
+
+// A Context specifies how to add data to a Sym.
+type Context interface {
+	PtrSize() int
+	AddInt(s Sym, size int, i int64)
+	AddBytes(s Sym, b []byte)
+	AddAddress(s Sym, t interface{}, ofs int64)
+	AddSectionOffset(s Sym, size int, t interface{}, ofs int64)
+	AddString(s Sym, v string)
+	SymValue(s Sym) int64
+}
+
+// AppendUleb128 appends v to b using DWARF's unsigned LEB128 encoding.
+func AppendUleb128(b []byte, v uint64) []byte {
+	for {
+		c := uint8(v & 0x7f)
+		v >>= 7
+		if v != 0 {
+			c |= 0x80
+		}
+		b = append(b, c)
+		if c&0x80 == 0 {
+			break
+		}
+	}
+	return b
+}
+
+// AppendSleb128 appends v to b using DWARF's signed LEB128 encoding.
+func AppendSleb128(b []byte, v int64) []byte {
+	for {
+		c := uint8(v & 0x7f)
+		s := uint8(v & 0x40)
+		v >>= 7
+		if (v != -1 || s == 0) && (v != 0 || s != 0) {
+			c |= 0x80
+		}
+		b = append(b, c)
+		if c&0x80 == 0 {
+			break
+		}
+	}
+	return b
+}
+
+var encbuf [20]byte
+
+// AppendUleb128 appends v to s using DWARF's unsigned LEB128 encoding.
+func Uleb128put(ctxt Context, s Sym, v int64) {
+	b := AppendUleb128(encbuf[:0], uint64(v))
+	ctxt.AddBytes(s, b)
+}
+
+// AppendUleb128 appends v to s using DWARF's signed LEB128 encoding.
+func Sleb128put(ctxt Context, s Sym, v int64) {
+	b := AppendSleb128(encbuf[:0], v)
+	ctxt.AddBytes(s, b)
+}
+
+/*
+ * Defining Abbrevs.  This is hardcoded, and there will be
+ * only a handful of them.  The DWARF spec places no restriction on
+ * the ordering of attributes in the Abbrevs and DIEs, and we will
+ * always write them out in the order of declaration in the abbrev.
+ */
+type dwAttrForm struct {
+	attr uint16
+	form uint8
+}
+
+// Go-specific type attributes.
+const (
+	DW_AT_go_kind = 0x2900
+	DW_AT_go_key  = 0x2901
+	DW_AT_go_elem = 0x2902
+
+	DW_AT_internal_location = 253 // params and locals; not emitted
+)
+
+// Index into the abbrevs table below.
+// Keep in sync with ispubname() and ispubtype() below.
+// ispubtype considers >= NULLTYPE public
+const (
+	DW_ABRV_NULL = iota
+	DW_ABRV_COMPUNIT
+	DW_ABRV_FUNCTION
+	DW_ABRV_VARIABLE
+	DW_ABRV_AUTO
+	DW_ABRV_PARAM
+	DW_ABRV_STRUCTFIELD
+	DW_ABRV_FUNCTYPEPARAM
+	DW_ABRV_DOTDOTDOT
+	DW_ABRV_ARRAYRANGE
+	DW_ABRV_NULLTYPE
+	DW_ABRV_BASETYPE
+	DW_ABRV_ARRAYTYPE
+	DW_ABRV_CHANTYPE
+	DW_ABRV_FUNCTYPE
+	DW_ABRV_IFACETYPE
+	DW_ABRV_MAPTYPE
+	DW_ABRV_PTRTYPE
+	DW_ABRV_BARE_PTRTYPE // only for void*, no DW_AT_type attr to please gdb 6.
+	DW_ABRV_SLICETYPE
+	DW_ABRV_STRINGTYPE
+	DW_ABRV_STRUCTTYPE
+	DW_ABRV_TYPEDECL
+	DW_NABRV
+)
+
+type dwAbbrev struct {
+	tag      uint8
+	children uint8
+	attr     []dwAttrForm
+}
+
+var abbrevs = [DW_NABRV]dwAbbrev{
+	/* The mandatory DW_ABRV_NULL entry. */
+	{0, 0, []dwAttrForm{}},
+
+	/* COMPUNIT */
+	{
+		DW_TAG_compile_unit,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_language, DW_FORM_data1},
+			{DW_AT_low_pc, DW_FORM_addr},
+			{DW_AT_high_pc, DW_FORM_addr},
+			{DW_AT_stmt_list, DW_FORM_data4},
+			{DW_AT_comp_dir, DW_FORM_string},
+		},
+	},
+
+	/* FUNCTION */
+	{
+		DW_TAG_subprogram,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_low_pc, DW_FORM_addr},
+			{DW_AT_high_pc, DW_FORM_addr},
+			{DW_AT_external, DW_FORM_flag},
+		},
+	},
+
+	/* VARIABLE */
+	{
+		DW_TAG_variable,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_location, DW_FORM_block1},
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_external, DW_FORM_flag},
+		},
+	},
+
+	/* AUTO */
+	{
+		DW_TAG_variable,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_location, DW_FORM_block1},
+			{DW_AT_type, DW_FORM_ref_addr},
+		},
+	},
+
+	/* PARAM */
+	{
+		DW_TAG_formal_parameter,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_location, DW_FORM_block1},
+			{DW_AT_type, DW_FORM_ref_addr},
+		},
+	},
+
+	/* STRUCTFIELD */
+	{
+		DW_TAG_member,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_data_member_location, DW_FORM_block1},
+			{DW_AT_type, DW_FORM_ref_addr},
+		},
+	},
+
+	/* FUNCTYPEPARAM */
+	{
+		DW_TAG_formal_parameter,
+		DW_CHILDREN_no,
+
+		// No name!
+		[]dwAttrForm{
+			{DW_AT_type, DW_FORM_ref_addr},
+		},
+	},
+
+	/* DOTDOTDOT */
+	{
+		DW_TAG_unspecified_parameters,
+		DW_CHILDREN_no,
+		[]dwAttrForm{},
+	},
+
+	/* ARRAYRANGE */
+	{
+		DW_TAG_subrange_type,
+		DW_CHILDREN_no,
+
+		// No name!
+		[]dwAttrForm{
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_count, DW_FORM_udata},
+		},
+	},
+
+	// Below here are the types considered public by ispubtype
+	/* NULLTYPE */
+	{
+		DW_TAG_unspecified_type,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+		},
+	},
+
+	/* BASETYPE */
+	{
+		DW_TAG_base_type,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_encoding, DW_FORM_data1},
+			{DW_AT_byte_size, DW_FORM_data1},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* ARRAYTYPE */
+	// child is subrange with upper bound
+	{
+		DW_TAG_array_type,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_byte_size, DW_FORM_udata},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* CHANTYPE */
+	{
+		DW_TAG_typedef,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_go_kind, DW_FORM_data1},
+			{DW_AT_go_elem, DW_FORM_ref_addr},
+		},
+	},
+
+	/* FUNCTYPE */
+	{
+		DW_TAG_subroutine_type,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			// {DW_AT_type,	DW_FORM_ref_addr},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* IFACETYPE */
+	{
+		DW_TAG_typedef,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* MAPTYPE */
+	{
+		DW_TAG_typedef,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_go_kind, DW_FORM_data1},
+			{DW_AT_go_key, DW_FORM_ref_addr},
+			{DW_AT_go_elem, DW_FORM_ref_addr},
+		},
+	},
+
+	/* PTRTYPE */
+	{
+		DW_TAG_pointer_type,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_type, DW_FORM_ref_addr},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* BARE_PTRTYPE */
+	{
+		DW_TAG_pointer_type,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+		},
+	},
+
+	/* SLICETYPE */
+	{
+		DW_TAG_structure_type,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_byte_size, DW_FORM_udata},
+			{DW_AT_go_kind, DW_FORM_data1},
+			{DW_AT_go_elem, DW_FORM_ref_addr},
+		},
+	},
+
+	/* STRINGTYPE */
+	{
+		DW_TAG_structure_type,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_byte_size, DW_FORM_udata},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* STRUCTTYPE */
+	{
+		DW_TAG_structure_type,
+		DW_CHILDREN_yes,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_byte_size, DW_FORM_udata},
+			{DW_AT_go_kind, DW_FORM_data1},
+		},
+	},
+
+	/* TYPEDECL */
+	{
+		DW_TAG_typedef,
+		DW_CHILDREN_no,
+		[]dwAttrForm{
+			{DW_AT_name, DW_FORM_string},
+			{DW_AT_type, DW_FORM_ref_addr},
+		},
+	},
+}
+
+// GetAbbrev returns the contents of the .debug_abbrev section.
+func GetAbbrev() []byte {
+	var buf []byte
+	for i := 1; i < DW_NABRV; i++ {
+		// See section 7.5.3
+		buf = AppendUleb128(buf, uint64(i))
+
+		buf = AppendUleb128(buf, uint64(abbrevs[i].tag))
+		buf = append(buf, byte(abbrevs[i].children))
+		for _, f := range abbrevs[i].attr {
+			buf = AppendUleb128(buf, uint64(f.attr))
+			buf = AppendUleb128(buf, uint64(f.form))
+		}
+		buf = append(buf, 0, 0)
+	}
+	return append(buf, 0)
+}
+
+/*
+ * Debugging Information Entries and their attributes.
+ */
+
+// DWAttr represents an attribute of a DWDie.
+//
+// For DW_CLS_string and _block, value should contain the length, and
+// data the data, for _reference, value is 0 and data is a DWDie* to
+// the referenced instance, for all others, value is the whole thing
+// and data is null.
+type DWAttr struct {
+	Link  *DWAttr
+	Atr   uint16 // DW_AT_
+	Cls   uint8  // DW_CLS_
+	Value int64
+	Data  interface{}
+}
+
+// DWDie represents a DWARF debug info entry.
+type DWDie struct {
+	Abbrev int
+	Link   *DWDie
+	Child  *DWDie
+	Attr   *DWAttr
+	Sym    Sym
+}
+
+func putattr(ctxt Context, s Sym, abbrev int, form int, cls int, value int64, data interface{}) error {
+	switch form {
+	case DW_FORM_addr: // address
+		ctxt.AddAddress(s, data, value)
+
+	case DW_FORM_block1: // block
+		if cls == DW_CLS_ADDRESS {
+			ctxt.AddInt(s, 1, int64(1+ctxt.PtrSize()))
+			ctxt.AddInt(s, 1, DW_OP_addr)
+			ctxt.AddAddress(s, data, 0)
+			break
+		}
+
+		value &= 0xff
+		ctxt.AddInt(s, 1, value)
+		p := data.([]byte)[:value]
+		ctxt.AddBytes(s, p)
+
+	case DW_FORM_block2: // block
+		value &= 0xffff
+
+		ctxt.AddInt(s, 2, value)
+		p := data.([]byte)[:value]
+		ctxt.AddBytes(s, p)
+
+	case DW_FORM_block4: // block
+		value &= 0xffffffff
+
+		ctxt.AddInt(s, 4, value)
+		p := data.([]byte)[:value]
+		ctxt.AddBytes(s, p)
+
+	case DW_FORM_block: // block
+		Uleb128put(ctxt, s, value)
+
+		p := data.([]byte)[:value]
+		ctxt.AddBytes(s, p)
+
+	case DW_FORM_data1: // constant
+		ctxt.AddInt(s, 1, value)
+
+	case DW_FORM_data2: // constant
+		ctxt.AddInt(s, 2, value)
+
+	case DW_FORM_data4: // constant, {line,loclist,mac,rangelist}ptr
+		if cls == DW_CLS_PTR { // DW_AT_stmt_list
+			ctxt.AddSectionOffset(s, 4, data, 0)
+			break
+		}
+		ctxt.AddInt(s, 4, value)
+
+	case DW_FORM_data8: // constant, {line,loclist,mac,rangelist}ptr
+		ctxt.AddInt(s, 8, value)
+
+	case DW_FORM_sdata: // constant
+		Sleb128put(ctxt, s, value)
+
+	case DW_FORM_udata: // constant
+		Uleb128put(ctxt, s, value)
+
+	case DW_FORM_string: // string
+		str := data.(string)
+		ctxt.AddString(s, str)
+		// TODO(ribrdb): verify padded strings are never used and remove this
+		for i := int64(len(str)); i < value; i++ {
+			ctxt.AddInt(s, 1, 0)
+		}
+
+	case DW_FORM_flag: // flag
+		if value != 0 {
+			ctxt.AddInt(s, 1, 1)
+		} else {
+			ctxt.AddInt(s, 1, 0)
+		}
+
+	// In DWARF 2 (which is what we claim to generate),
+	// the ref_addr is the same size as a normal address.
+	// In DWARF 3 it is always 32 bits, unless emitting a large
+	// (> 4 GB of debug info aka "64-bit") unit, which we don't implement.
+	case DW_FORM_ref_addr: // reference to a DIE in the .info section
+		if data == nil {
+			return fmt.Errorf("dwarf: null reference in %d", abbrev)
+		} else {
+			ctxt.AddSectionOffset(s, ctxt.PtrSize(), data, 0)
+		}
+
+	case DW_FORM_ref1, // reference within the compilation unit
+		DW_FORM_ref2,      // reference
+		DW_FORM_ref4,      // reference
+		DW_FORM_ref8,      // reference
+		DW_FORM_ref_udata, // reference
+
+		DW_FORM_strp,     // string
+		DW_FORM_indirect: // (see Section 7.5.3)
+		fallthrough
+	default:
+		return fmt.Errorf("dwarf: unsupported attribute form %d / class %d", form, cls)
+	}
+	return nil
+}
+
+// PutAttrs writes the attributes for a DIE to symbol 's'.
+//
+// Note that we can (and do) add arbitrary attributes to a DIE, but
+// only the ones actually listed in the Abbrev will be written out.
+func PutAttrs(ctxt Context, s Sym, abbrev int, attr *DWAttr) {
+Outer:
+	for _, f := range abbrevs[abbrev].attr {
+		for ap := attr; ap != nil; ap = ap.Link {
+			if ap.Atr == f.attr {
+				putattr(ctxt, s, abbrev, int(f.form), int(ap.Cls), ap.Value, ap.Data)
+				continue Outer
+			}
+		}
+
+		putattr(ctxt, s, abbrev, int(f.form), 0, 0, nil)
+	}
+}
+
+// HasChildren returns true if 'die' uses an abbrev that supports children.
+func HasChildren(die *DWDie) bool {
+	return abbrevs[die.Abbrev].children != 0
+}
+
+// PutFunc writes a DIE for a function to s.
+// It also writes child DIEs for each variable in vars.
+func PutFunc(ctxt Context, s Sym, name string, external bool, startPC Sym, size int64, vars *Var) {
+	Uleb128put(ctxt, s, DW_ABRV_FUNCTION)
+	putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_string, DW_CLS_STRING, int64(len(name)), name)
+	putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_addr, DW_CLS_ADDRESS, 0, startPC)
+	putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_addr, DW_CLS_ADDRESS, size+ctxt.SymValue(startPC), startPC)
+	var ev int64
+	if external {
+		ev = 1
+	}
+	putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_flag, DW_CLS_FLAG, ev, 0)
+	names := make(map[string]bool)
+	for v := vars; v != nil; v = v.Link {
+		var n string
+		if names[v.Name] {
+			n = fmt.Sprintf("%s#%d", v.Name, len(names))
+		} else {
+			n = v.Name
+		}
+		names[n] = true
+
+		Uleb128put(ctxt, s, int64(v.Abbrev))
+		putattr(ctxt, s, v.Abbrev, DW_FORM_string, DW_CLS_STRING, int64(len(n)), n)
+		loc := append(encbuf[:0], DW_OP_call_frame_cfa)
+		if v.Offset != 0 {
+			loc = append(loc, DW_OP_consts)
+			loc = AppendSleb128(loc, int64(v.Offset))
+			loc = append(loc, DW_OP_plus)
+		}
+		putattr(ctxt, s, v.Abbrev, DW_FORM_block1, DW_CLS_BLOCK, int64(len(loc)), loc)
+		putattr(ctxt, s, v.Abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, v.Type)
+
+	}
+	Uleb128put(ctxt, s, 0)
+}
diff --git a/vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go b/vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go
new file mode 100644
index 00000000..d1870b57
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go
@@ -0,0 +1,483 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package dwarf
+
+// Cut, pasted, tr-and-awk'ed from tables in
+// http://dwarfstd.org/doc/Dwarf3.pdf
+
+// Table 18
+const (
+	DW_TAG_array_type               = 0x01
+	DW_TAG_class_type               = 0x02
+	DW_TAG_entry_point              = 0x03
+	DW_TAG_enumeration_type         = 0x04
+	DW_TAG_formal_parameter         = 0x05
+	DW_TAG_imported_declaration     = 0x08
+	DW_TAG_label                    = 0x0a
+	DW_TAG_lexical_block            = 0x0b
+	DW_TAG_member                   = 0x0d
+	DW_TAG_pointer_type             = 0x0f
+	DW_TAG_reference_type           = 0x10
+	DW_TAG_compile_unit             = 0x11
+	DW_TAG_string_type              = 0x12
+	DW_TAG_structure_type           = 0x13
+	DW_TAG_subroutine_type          = 0x15
+	DW_TAG_typedef                  = 0x16
+	DW_TAG_union_type               = 0x17
+	DW_TAG_unspecified_parameters   = 0x18
+	DW_TAG_variant                  = 0x19
+	DW_TAG_common_block             = 0x1a
+	DW_TAG_common_inclusion         = 0x1b
+	DW_TAG_inheritance              = 0x1c
+	DW_TAG_inlined_subroutine       = 0x1d
+	DW_TAG_module                   = 0x1e
+	DW_TAG_ptr_to_member_type       = 0x1f
+	DW_TAG_set_type                 = 0x20
+	DW_TAG_subrange_type            = 0x21
+	DW_TAG_with_stmt                = 0x22
+	DW_TAG_access_declaration       = 0x23
+	DW_TAG_base_type                = 0x24
+	DW_TAG_catch_block              = 0x25
+	DW_TAG_const_type               = 0x26
+	DW_TAG_constant                 = 0x27
+	DW_TAG_enumerator               = 0x28
+	DW_TAG_file_type                = 0x29
+	DW_TAG_friend                   = 0x2a
+	DW_TAG_namelist                 = 0x2b
+	DW_TAG_namelist_item            = 0x2c
+	DW_TAG_packed_type              = 0x2d
+	DW_TAG_subprogram               = 0x2e
+	DW_TAG_template_type_parameter  = 0x2f
+	DW_TAG_template_value_parameter = 0x30
+	DW_TAG_thrown_type              = 0x31
+	DW_TAG_try_block                = 0x32
+	DW_TAG_variant_part             = 0x33
+	DW_TAG_variable                 = 0x34
+	DW_TAG_volatile_type            = 0x35
+	// Dwarf3
+	DW_TAG_dwarf_procedure  = 0x36
+	DW_TAG_restrict_type    = 0x37
+	DW_TAG_interface_type   = 0x38
+	DW_TAG_namespace        = 0x39
+	DW_TAG_imported_module  = 0x3a
+	DW_TAG_unspecified_type = 0x3b
+	DW_TAG_partial_unit     = 0x3c
+	DW_TAG_imported_unit    = 0x3d
+	DW_TAG_condition        = 0x3f
+	DW_TAG_shared_type      = 0x40
+	// Dwarf4
+	DW_TAG_type_unit             = 0x41
+	DW_TAG_rvalue_reference_type = 0x42
+	DW_TAG_template_alias        = 0x43
+
+	// User defined
+	DW_TAG_lo_user = 0x4080
+	DW_TAG_hi_user = 0xffff
+)
+
+// Table 19
+const (
+	DW_CHILDREN_no  = 0x00
+	DW_CHILDREN_yes = 0x01
+)
+
+// Not from the spec, but logically belongs here
+const (
+	DW_CLS_ADDRESS = 0x01 + iota
+	DW_CLS_BLOCK
+	DW_CLS_CONSTANT
+	DW_CLS_FLAG
+	DW_CLS_PTR // lineptr, loclistptr, macptr, rangelistptr
+	DW_CLS_REFERENCE
+	DW_CLS_ADDRLOC
+	DW_CLS_STRING
+)
+
+// Table 20
+const (
+	DW_AT_sibling              = 0x01 // reference
+	DW_AT_location             = 0x02 // block, loclistptr
+	DW_AT_name                 = 0x03 // string
+	DW_AT_ordering             = 0x09 // constant
+	DW_AT_byte_size            = 0x0b // block, constant, reference
+	DW_AT_bit_offset           = 0x0c // block, constant, reference
+	DW_AT_bit_size             = 0x0d // block, constant, reference
+	DW_AT_stmt_list            = 0x10 // lineptr
+	DW_AT_low_pc               = 0x11 // address
+	DW_AT_high_pc              = 0x12 // address
+	DW_AT_language             = 0x13 // constant
+	DW_AT_discr                = 0x15 // reference
+	DW_AT_discr_value          = 0x16 // constant
+	DW_AT_visibility           = 0x17 // constant
+	DW_AT_import               = 0x18 // reference
+	DW_AT_string_length        = 0x19 // block, loclistptr
+	DW_AT_common_reference     = 0x1a // reference
+	DW_AT_comp_dir             = 0x1b // string
+	DW_AT_const_value          = 0x1c // block, constant, string
+	DW_AT_containing_type      = 0x1d // reference
+	DW_AT_default_value        = 0x1e // reference
+	DW_AT_inline               = 0x20 // constant
+	DW_AT_is_optional          = 0x21 // flag
+	DW_AT_lower_bound          = 0x22 // block, constant, reference
+	DW_AT_producer             = 0x25 // string
+	DW_AT_prototyped           = 0x27 // flag
+	DW_AT_return_addr          = 0x2a // block, loclistptr
+	DW_AT_start_scope          = 0x2c // constant
+	DW_AT_bit_stride           = 0x2e // constant
+	DW_AT_upper_bound          = 0x2f // block, constant, reference
+	DW_AT_abstract_origin      = 0x31 // reference
+	DW_AT_accessibility        = 0x32 // constant
+	DW_AT_address_class        = 0x33 // constant
+	DW_AT_artificial           = 0x34 // flag
+	DW_AT_base_types           = 0x35 // reference
+	DW_AT_calling_convention   = 0x36 // constant
+	DW_AT_count                = 0x37 // block, constant, reference
+	DW_AT_data_member_location = 0x38 // block, constant, loclistptr
+	DW_AT_decl_column          = 0x39 // constant
+	DW_AT_decl_file            = 0x3a // constant
+	DW_AT_decl_line            = 0x3b // constant
+	DW_AT_declaration          = 0x3c // flag
+	DW_AT_discr_list           = 0x3d // block
+	DW_AT_encoding             = 0x3e // constant
+	DW_AT_external             = 0x3f // flag
+	DW_AT_frame_base           = 0x40 // block, loclistptr
+	DW_AT_friend               = 0x41 // reference
+	DW_AT_identifier_case      = 0x42 // constant
+	DW_AT_macro_info           = 0x43 // macptr
+	DW_AT_namelist_item        = 0x44 // block
+	DW_AT_priority             = 0x45 // reference
+	DW_AT_segment              = 0x46 // block, loclistptr
+	DW_AT_specification        = 0x47 // reference
+	DW_AT_static_link          = 0x48 // block, loclistptr
+	DW_AT_type                 = 0x49 // reference
+	DW_AT_use_location         = 0x4a // block, loclistptr
+	DW_AT_variable_parameter   = 0x4b // flag
+	DW_AT_virtuality           = 0x4c // constant
+	DW_AT_vtable_elem_location = 0x4d // block, loclistptr
+	// Dwarf3
+	DW_AT_allocated      = 0x4e // block, constant, reference
+	DW_AT_associated     = 0x4f // block, constant, reference
+	DW_AT_data_location  = 0x50 // block
+	DW_AT_byte_stride    = 0x51 // block, constant, reference
+	DW_AT_entry_pc       = 0x52 // address
+	DW_AT_use_UTF8       = 0x53 // flag
+	DW_AT_extension      = 0x54 // reference
+	DW_AT_ranges         = 0x55 // rangelistptr
+	DW_AT_trampoline     = 0x56 // address, flag, reference, string
+	DW_AT_call_column    = 0x57 // constant
+	DW_AT_call_file      = 0x58 // constant
+	DW_AT_call_line      = 0x59 // constant
+	DW_AT_description    = 0x5a // string
+	DW_AT_binary_scale   = 0x5b // constant
+	DW_AT_decimal_scale  = 0x5c // constant
+	DW_AT_small          = 0x5d // reference
+	DW_AT_decimal_sign   = 0x5e // constant
+	DW_AT_digit_count    = 0x5f // constant
+	DW_AT_picture_string = 0x60 // string
+	DW_AT_mutable        = 0x61 // flag
+	DW_AT_threads_scaled = 0x62 // flag
+	DW_AT_explicit       = 0x63 // flag
+	DW_AT_object_pointer = 0x64 // reference
+	DW_AT_endianity      = 0x65 // constant
+	DW_AT_elemental      = 0x66 // flag
+	DW_AT_pure           = 0x67 // flag
+	DW_AT_recursive      = 0x68 // flag
+
+	DW_AT_lo_user = 0x2000 // ---
+	DW_AT_hi_user = 0x3fff // ---
+)
+
+// Table 21
+const (
+	DW_FORM_addr      = 0x01 // address
+	DW_FORM_block2    = 0x03 // block
+	DW_FORM_block4    = 0x04 // block
+	DW_FORM_data2     = 0x05 // constant
+	DW_FORM_data4     = 0x06 // constant, lineptr, loclistptr, macptr, rangelistptr
+	DW_FORM_data8     = 0x07 // constant, lineptr, loclistptr, macptr, rangelistptr
+	DW_FORM_string    = 0x08 // string
+	DW_FORM_block     = 0x09 // block
+	DW_FORM_block1    = 0x0a // block
+	DW_FORM_data1     = 0x0b // constant
+	DW_FORM_flag      = 0x0c // flag
+	DW_FORM_sdata     = 0x0d // constant
+	DW_FORM_strp      = 0x0e // string
+	DW_FORM_udata     = 0x0f // constant
+	DW_FORM_ref_addr  = 0x10 // reference
+	DW_FORM_ref1      = 0x11 // reference
+	DW_FORM_ref2      = 0x12 // reference
+	DW_FORM_ref4      = 0x13 // reference
+	DW_FORM_ref8      = 0x14 // reference
+	DW_FORM_ref_udata = 0x15 // reference
+	DW_FORM_indirect  = 0x16 // (see Section 7.5.3)
+)
+
+// Table 24 (#operands, notes)
+const (
+	DW_OP_addr                = 0x03 // 1 constant address (size target specific)
+	DW_OP_deref               = 0x06 // 0
+	DW_OP_const1u             = 0x08 // 1 1-byte constant
+	DW_OP_const1s             = 0x09 // 1 1-byte constant
+	DW_OP_const2u             = 0x0a // 1 2-byte constant
+	DW_OP_const2s             = 0x0b // 1 2-byte constant
+	DW_OP_const4u             = 0x0c // 1 4-byte constant
+	DW_OP_const4s             = 0x0d // 1 4-byte constant
+	DW_OP_const8u             = 0x0e // 1 8-byte constant
+	DW_OP_const8s             = 0x0f // 1 8-byte constant
+	DW_OP_constu              = 0x10 // 1 ULEB128 constant
+	DW_OP_consts              = 0x11 // 1 SLEB128 constant
+	DW_OP_dup                 = 0x12 // 0
+	DW_OP_drop                = 0x13 // 0
+	DW_OP_over                = 0x14 // 0
+	DW_OP_pick                = 0x15 // 1 1-byte stack index
+	DW_OP_swap                = 0x16 // 0
+	DW_OP_rot                 = 0x17 // 0
+	DW_OP_xderef              = 0x18 // 0
+	DW_OP_abs                 = 0x19 // 0
+	DW_OP_and                 = 0x1a // 0
+	DW_OP_div                 = 0x1b // 0
+	DW_OP_minus               = 0x1c // 0
+	DW_OP_mod                 = 0x1d // 0
+	DW_OP_mul                 = 0x1e // 0
+	DW_OP_neg                 = 0x1f // 0
+	DW_OP_not                 = 0x20 // 0
+	DW_OP_or                  = 0x21 // 0
+	DW_OP_plus                = 0x22 // 0
+	DW_OP_plus_uconst         = 0x23 // 1 ULEB128 addend
+	DW_OP_shl                 = 0x24 // 0
+	DW_OP_shr                 = 0x25 // 0
+	DW_OP_shra                = 0x26 // 0
+	DW_OP_xor                 = 0x27 // 0
+	DW_OP_skip                = 0x2f // 1 signed 2-byte constant
+	DW_OP_bra                 = 0x28 // 1 signed 2-byte constant
+	DW_OP_eq                  = 0x29 // 0
+	DW_OP_ge                  = 0x2a // 0
+	DW_OP_gt                  = 0x2b // 0
+	DW_OP_le                  = 0x2c // 0
+	DW_OP_lt                  = 0x2d // 0
+	DW_OP_ne                  = 0x2e // 0
+	DW_OP_lit0                = 0x30 // 0 ...
+	DW_OP_lit31               = 0x4f // 0 literals 0..31 = (DW_OP_lit0 + literal)
+	DW_OP_reg0                = 0x50 // 0 ..
+	DW_OP_reg31               = 0x6f // 0 reg 0..31 = (DW_OP_reg0 + regnum)
+	DW_OP_breg0               = 0x70 // 1 ...
+	DW_OP_breg31              = 0x8f // 1 SLEB128 offset base register 0..31 = (DW_OP_breg0 + regnum)
+	DW_OP_regx                = 0x90 // 1 ULEB128 register
+	DW_OP_fbreg               = 0x91 // 1 SLEB128 offset
+	DW_OP_bregx               = 0x92 // 2 ULEB128 register followed by SLEB128 offset
+	DW_OP_piece               = 0x93 // 1 ULEB128 size of piece addressed
+	DW_OP_deref_size          = 0x94 // 1 1-byte size of data retrieved
+	DW_OP_xderef_size         = 0x95 // 1 1-byte size of data retrieved
+	DW_OP_nop                 = 0x96 // 0
+	DW_OP_push_object_address = 0x97 // 0
+	DW_OP_call2               = 0x98 // 1 2-byte offset of DIE
+	DW_OP_call4               = 0x99 // 1 4-byte offset of DIE
+	DW_OP_call_ref            = 0x9a // 1 4- or 8-byte offset of DIE
+	DW_OP_form_tls_address    = 0x9b // 0
+	DW_OP_call_frame_cfa      = 0x9c // 0
+	DW_OP_bit_piece           = 0x9d // 2
+	DW_OP_lo_user             = 0xe0
+	DW_OP_hi_user             = 0xff
+)
+
+// Table 25
+const (
+	DW_ATE_address         = 0x01
+	DW_ATE_boolean         = 0x02
+	DW_ATE_complex_float   = 0x03
+	DW_ATE_float           = 0x04
+	DW_ATE_signed          = 0x05
+	DW_ATE_signed_char     = 0x06
+	DW_ATE_unsigned        = 0x07
+	DW_ATE_unsigned_char   = 0x08
+	DW_ATE_imaginary_float = 0x09
+	DW_ATE_packed_decimal  = 0x0a
+	DW_ATE_numeric_string  = 0x0b
+	DW_ATE_edited          = 0x0c
+	DW_ATE_signed_fixed    = 0x0d
+	DW_ATE_unsigned_fixed  = 0x0e
+	DW_ATE_decimal_float   = 0x0f
+	DW_ATE_lo_user         = 0x80
+	DW_ATE_hi_user         = 0xff
+)
+
+// Table 26
+const (
+	DW_DS_unsigned           = 0x01
+	DW_DS_leading_overpunch  = 0x02
+	DW_DS_trailing_overpunch = 0x03
+	DW_DS_leading_separate   = 0x04
+	DW_DS_trailing_separate  = 0x05
+)
+
+// Table 27
+const (
+	DW_END_default = 0x00
+	DW_END_big     = 0x01
+	DW_END_little  = 0x02
+	DW_END_lo_user = 0x40
+	DW_END_hi_user = 0xff
+)
+
+// Table 28
+const (
+	DW_ACCESS_public    = 0x01
+	DW_ACCESS_protected = 0x02
+	DW_ACCESS_private   = 0x03
+)
+
+// Table 29
+const (
+	DW_VIS_local     = 0x01
+	DW_VIS_exported  = 0x02
+	DW_VIS_qualified = 0x03
+)
+
+// Table 30
+const (
+	DW_VIRTUALITY_none         = 0x00
+	DW_VIRTUALITY_virtual      = 0x01
+	DW_VIRTUALITY_pure_virtual = 0x02
+)
+
+// Table 31
+const (
+	DW_LANG_C89         = 0x0001
+	DW_LANG_C           = 0x0002
+	DW_LANG_Ada83       = 0x0003
+	DW_LANG_C_plus_plus = 0x0004
+	DW_LANG_Cobol74     = 0x0005
+	DW_LANG_Cobol85     = 0x0006
+	DW_LANG_Fortran77   = 0x0007
+	DW_LANG_Fortran90   = 0x0008
+	DW_LANG_Pascal83    = 0x0009
+	DW_LANG_Modula2     = 0x000a
+	// Dwarf3
+	DW_LANG_Java           = 0x000b
+	DW_LANG_C99            = 0x000c
+	DW_LANG_Ada95          = 0x000d
+	DW_LANG_Fortran95      = 0x000e
+	DW_LANG_PLI            = 0x000f
+	DW_LANG_ObjC           = 0x0010
+	DW_LANG_ObjC_plus_plus = 0x0011
+	DW_LANG_UPC            = 0x0012
+	DW_LANG_D              = 0x0013
+	// Dwarf4
+	DW_LANG_Python = 0x0014
+	// Dwarf5
+	DW_LANG_Go = 0x0016
+
+	DW_LANG_lo_user = 0x8000
+	DW_LANG_hi_user = 0xffff
+)
+
+// Table 32
+const (
+	DW_ID_case_sensitive   = 0x00
+	DW_ID_up_case          = 0x01
+	DW_ID_down_case        = 0x02
+	DW_ID_case_insensitive = 0x03
+)
+
+// Table 33
+const (
+	DW_CC_normal  = 0x01
+	DW_CC_program = 0x02
+	DW_CC_nocall  = 0x03
+	DW_CC_lo_user = 0x40
+	DW_CC_hi_user = 0xff
+)
+
+// Table 34
+const (
+	DW_INL_not_inlined          = 0x00
+	DW_INL_inlined              = 0x01
+	DW_INL_declared_not_inlined = 0x02
+	DW_INL_declared_inlined     = 0x03
+)
+
+// Table 35
+const (
+	DW_ORD_row_major = 0x00
+	DW_ORD_col_major = 0x01
+)
+
+// Table 36
+const (
+	DW_DSC_label = 0x00
+	DW_DSC_range = 0x01
+)
+
+// Table 37
+const (
+	DW_LNS_copy             = 0x01
+	DW_LNS_advance_pc       = 0x02
+	DW_LNS_advance_line     = 0x03
+	DW_LNS_set_file         = 0x04
+	DW_LNS_set_column       = 0x05
+	DW_LNS_negate_stmt      = 0x06
+	DW_LNS_set_basic_block  = 0x07
+	DW_LNS_const_add_pc     = 0x08
+	DW_LNS_fixed_advance_pc = 0x09
+	// Dwarf3
+	DW_LNS_set_prologue_end   = 0x0a
+	DW_LNS_set_epilogue_begin = 0x0b
+	DW_LNS_set_isa            = 0x0c
+)
+
+// Table 38
+const (
+	DW_LNE_end_sequence = 0x01
+	DW_LNE_set_address  = 0x02
+	DW_LNE_define_file  = 0x03
+	DW_LNE_lo_user      = 0x80
+	DW_LNE_hi_user      = 0xff
+)
+
+// Table 39
+const (
+	DW_MACINFO_define     = 0x01
+	DW_MACINFO_undef      = 0x02
+	DW_MACINFO_start_file = 0x03
+	DW_MACINFO_end_file   = 0x04
+	DW_MACINFO_vendor_ext = 0xff
+)
+
+// Table 40.
+const (
+	// operand,...
+	DW_CFA_nop              = 0x00
+	DW_CFA_set_loc          = 0x01 // address
+	DW_CFA_advance_loc1     = 0x02 // 1-byte delta
+	DW_CFA_advance_loc2     = 0x03 // 2-byte delta
+	DW_CFA_advance_loc4     = 0x04 // 4-byte delta
+	DW_CFA_offset_extended  = 0x05 // ULEB128 register, ULEB128 offset
+	DW_CFA_restore_extended = 0x06 // ULEB128 register
+	DW_CFA_undefined        = 0x07 // ULEB128 register
+	DW_CFA_same_value       = 0x08 // ULEB128 register
+	DW_CFA_register         = 0x09 // ULEB128 register, ULEB128 register
+	DW_CFA_remember_state   = 0x0a
+	DW_CFA_restore_state    = 0x0b
+
+	DW_CFA_def_cfa            = 0x0c // ULEB128 register, ULEB128 offset
+	DW_CFA_def_cfa_register   = 0x0d // ULEB128 register
+	DW_CFA_def_cfa_offset     = 0x0e // ULEB128 offset
+	DW_CFA_def_cfa_expression = 0x0f // BLOCK
+	DW_CFA_expression         = 0x10 // ULEB128 register, BLOCK
+	DW_CFA_offset_extended_sf = 0x11 // ULEB128 register, SLEB128 offset
+	DW_CFA_def_cfa_sf         = 0x12 // ULEB128 register, SLEB128 offset
+	DW_CFA_def_cfa_offset_sf  = 0x13 // SLEB128 offset
+	DW_CFA_val_offset         = 0x14 // ULEB128, ULEB128
+	DW_CFA_val_offset_sf      = 0x15 // ULEB128, SLEB128
+	DW_CFA_val_expression     = 0x16 // ULEB128, BLOCK
+
+	DW_CFA_lo_user = 0x1c
+	DW_CFA_hi_user = 0x3f
+
+	// Opcodes that take an addend operand.
+	DW_CFA_advance_loc = 0x1 << 6 // +delta
+	DW_CFA_offset      = 0x2 << 6 // +register (ULEB128 offset)
+	DW_CFA_restore     = 0x3 << 6 // +register
+)
diff --git a/vendor/github.com/google/gops/internal/goobj/read.go b/vendor/github.com/google/gops/internal/goobj/read.go
new file mode 100644
index 00000000..8a6f13bc
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/goobj/read.go
@@ -0,0 +1,714 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package goobj implements reading of Go object files and archives.
+//
+// TODO(rsc): Decide where this package should live. (golang.org/issue/6932)
+// TODO(rsc): Decide the appropriate integer types for various fields.
+// TODO(rsc): Write tests. (File format still up in the air a little.)
+package goobj
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+
+	"github.com/google/gops/internal/obj"
+)
+
+// A SymKind describes the kind of memory represented by a symbol.
+type SymKind int
+
+// This list is taken from include/link.h.
+
+// Defined SymKind values.
+// TODO(rsc): Give idiomatic Go names.
+// TODO(rsc): Reduce the number of symbol types in the object files.
+const (
+	// readonly, executable
+	STEXT      = SymKind(obj.STEXT)
+	SELFRXSECT = SymKind(obj.SELFRXSECT)
+
+	// readonly, non-executable
+	STYPE      = SymKind(obj.STYPE)
+	SSTRING    = SymKind(obj.SSTRING)
+	SGOSTRING  = SymKind(obj.SGOSTRING)
+	SGOFUNC    = SymKind(obj.SGOFUNC)
+	SRODATA    = SymKind(obj.SRODATA)
+	SFUNCTAB   = SymKind(obj.SFUNCTAB)
+	STYPELINK  = SymKind(obj.STYPELINK)
+	SITABLINK  = SymKind(obj.SITABLINK)
+	SSYMTAB    = SymKind(obj.SSYMTAB) // TODO: move to unmapped section
+	SPCLNTAB   = SymKind(obj.SPCLNTAB)
+	SELFROSECT = SymKind(obj.SELFROSECT)
+
+	// writable, non-executable
+	SMACHOPLT  = SymKind(obj.SMACHOPLT)
+	SELFSECT   = SymKind(obj.SELFSECT)
+	SMACHO     = SymKind(obj.SMACHO) // Mach-O __nl_symbol_ptr
+	SMACHOGOT  = SymKind(obj.SMACHOGOT)
+	SWINDOWS   = SymKind(obj.SWINDOWS)
+	SELFGOT    = SymKind(obj.SELFGOT)
+	SNOPTRDATA = SymKind(obj.SNOPTRDATA)
+	SINITARR   = SymKind(obj.SINITARR)
+	SDATA      = SymKind(obj.SDATA)
+	SBSS       = SymKind(obj.SBSS)
+	SNOPTRBSS  = SymKind(obj.SNOPTRBSS)
+	STLSBSS    = SymKind(obj.STLSBSS)
+
+	// not mapped
+	SXREF             = SymKind(obj.SXREF)
+	SMACHOSYMSTR      = SymKind(obj.SMACHOSYMSTR)
+	SMACHOSYMTAB      = SymKind(obj.SMACHOSYMTAB)
+	SMACHOINDIRECTPLT = SymKind(obj.SMACHOINDIRECTPLT)
+	SMACHOINDIRECTGOT = SymKind(obj.SMACHOINDIRECTGOT)
+	SFILE             = SymKind(obj.SFILE)
+	SFILEPATH         = SymKind(obj.SFILEPATH)
+	SCONST            = SymKind(obj.SCONST)
+	SDYNIMPORT        = SymKind(obj.SDYNIMPORT)
+	SHOSTOBJ          = SymKind(obj.SHOSTOBJ)
+)
+
+var symKindStrings = []string{
+	SBSS:              "SBSS",
+	SCONST:            "SCONST",
+	SDATA:             "SDATA",
+	SDYNIMPORT:        "SDYNIMPORT",
+	SELFROSECT:        "SELFROSECT",
+	SELFRXSECT:        "SELFRXSECT",
+	SELFSECT:          "SELFSECT",
+	SFILE:             "SFILE",
+	SFILEPATH:         "SFILEPATH",
+	SFUNCTAB:          "SFUNCTAB",
+	SGOFUNC:           "SGOFUNC",
+	SGOSTRING:         "SGOSTRING",
+	SHOSTOBJ:          "SHOSTOBJ",
+	SINITARR:          "SINITARR",
+	SMACHO:            "SMACHO",
+	SMACHOGOT:         "SMACHOGOT",
+	SMACHOINDIRECTGOT: "SMACHOINDIRECTGOT",
+	SMACHOINDIRECTPLT: "SMACHOINDIRECTPLT",
+	SMACHOPLT:         "SMACHOPLT",
+	SMACHOSYMSTR:      "SMACHOSYMSTR",
+	SMACHOSYMTAB:      "SMACHOSYMTAB",
+	SNOPTRBSS:         "SNOPTRBSS",
+	SNOPTRDATA:        "SNOPTRDATA",
+	SPCLNTAB:          "SPCLNTAB",
+	SRODATA:           "SRODATA",
+	SSTRING:           "SSTRING",
+	SSYMTAB:           "SSYMTAB",
+	STEXT:             "STEXT",
+	STLSBSS:           "STLSBSS",
+	STYPE:             "STYPE",
+	STYPELINK:         "STYPELINK",
+	SITABLINK:         "SITABLINK",
+	SWINDOWS:          "SWINDOWS",
+	SXREF:             "SXREF",
+}
+
+func (k SymKind) String() string {
+	if k < 0 || int(k) >= len(symKindStrings) {
+		return fmt.Sprintf("SymKind(%d)", k)
+	}
+	return symKindStrings[k]
+}
+
+// A Sym is a named symbol in an object file.
+type Sym struct {
+	SymID         // symbol identifier (name and version)
+	Kind  SymKind // kind of symbol
+	DupOK bool    // are duplicate definitions okay?
+	Size  int     // size of corresponding data
+	Type  SymID   // symbol for Go type information
+	Data  Data    // memory image of symbol
+	Reloc []Reloc // relocations to apply to Data
+	Func  *Func   // additional data for functions
+}
+
+// A SymID - the combination of Name and Version - uniquely identifies
+// a symbol within a package.
+type SymID struct {
+	// Name is the name of a symbol.
+	Name string
+
+	// Version is zero for symbols with global visibility.
+	// Symbols with only file visibility (such as file-level static
+	// declarations in C) have a non-zero version distinguishing
+	// a symbol in one file from a symbol of the same name
+	// in another file
+	Version int
+}
+
+func (s SymID) String() string {
+	if s.Version == 0 {
+		return s.Name
+	}
+	return fmt.Sprintf("%s<%d>", s.Name, s.Version)
+}
+
+// A Data is a reference to data stored in an object file.
+// It records the offset and size of the data, so that a client can
+// read the data only if necessary.
+type Data struct {
+	Offset int64
+	Size   int64
+}
+
+// A Reloc describes a relocation applied to a memory image to refer
+// to an address within a particular symbol.
+type Reloc struct {
+	// The bytes at [Offset, Offset+Size) within the containing Sym
+	// should be updated to refer to the address Add bytes after the start
+	// of the symbol Sym.
+	Offset int
+	Size   int
+	Sym    SymID
+	Add    int
+
+	// The Type records the form of address expected in the bytes
+	// described by the previous fields: absolute, PC-relative, and so on.
+	// TODO(rsc): The interpretation of Type is not exposed by this package.
+	Type obj.RelocType
+}
+
+// A Var describes a variable in a function stack frame: a declared
+// local variable, an input argument, or an output result.
+type Var struct {
+	// The combination of Name, Kind, and Offset uniquely
+	// identifies a variable in a function stack frame.
+	// Using fewer of these - in particular, using only Name - does not.
+	Name   string // Name of variable.
+	Kind   int    // TODO(rsc): Define meaning.
+	Offset int    // Frame offset. TODO(rsc): Define meaning.
+
+	Type SymID // Go type for variable.
+}
+
+// Func contains additional per-symbol information specific to functions.
+type Func struct {
+	Args     int        // size in bytes of argument frame: inputs and outputs
+	Frame    int        // size in bytes of local variable frame
+	Leaf     bool       // function omits save of link register (ARM)
+	NoSplit  bool       // function omits stack split prologue
+	Var      []Var      // detail about local variables
+	PCSP     Data       // PC → SP offset map
+	PCFile   Data       // PC → file number map (index into File)
+	PCLine   Data       // PC → line number map
+	PCData   []Data     // PC → runtime support data map
+	FuncData []FuncData // non-PC-specific runtime support data
+	File     []string   // paths indexed by PCFile
+}
+
+// TODO: Add PCData []byte and PCDataIter (similar to liblink).
+
+// A FuncData is a single function-specific data value.
+type FuncData struct {
+	Sym    SymID // symbol holding data
+	Offset int64 // offset into symbol for funcdata pointer
+}
+
+// A Package is a parsed Go object file or archive defining a Go package.
+type Package struct {
+	ImportPath string   // import path denoting this package
+	Imports    []string // packages imported by this package
+	SymRefs    []SymID  // list of symbol names and versions referred to by this pack
+	Syms       []*Sym   // symbols defined by this package
+	MaxVersion int      // maximum Version in any SymID in Syms
+	Arch       string   // architecture
+}
+
+var (
+	archiveHeader = []byte("!<arch>\n")
+	archiveMagic  = []byte("`\n")
+	goobjHeader   = []byte("go objec") // truncated to size of archiveHeader
+
+	errCorruptArchive   = errors.New("corrupt archive")
+	errTruncatedArchive = errors.New("truncated archive")
+	errCorruptObject    = errors.New("corrupt object file")
+	errNotObject        = errors.New("unrecognized object file format")
+)
+
+// An objReader is an object file reader.
+type objReader struct {
+	p          *Package
+	b          *bufio.Reader
+	f          io.ReadSeeker
+	err        error
+	offset     int64
+	dataOffset int64
+	limit      int64
+	tmp        [256]byte
+	pkgprefix  string
+}
+
+// importPathToPrefix returns the prefix that will be used in the
+// final symbol table for the given import path.
+// We escape '%', '"', all control characters and non-ASCII bytes,
+// and any '.' after the final slash.
+//
+// See ../../../cmd/ld/lib.c:/^pathtoprefix and
+// ../../../cmd/gc/subr.c:/^pathtoprefix.
+func importPathToPrefix(s string) string {
+	// find index of last slash, if any, or else -1.
+	// used for determining whether an index is after the last slash.
+	slash := strings.LastIndex(s, "/")
+
+	// check for chars that need escaping
+	n := 0
+	for r := 0; r < len(s); r++ {
+		if c := s[r]; c <= ' ' || (c == '.' && r > slash) || c == '%' || c == '"' || c >= 0x7F {
+			n++
+		}
+	}
+
+	// quick exit
+	if n == 0 {
+		return s
+	}
+
+	// escape
+	const hex = "0123456789abcdef"
+	p := make([]byte, 0, len(s)+2*n)
+	for r := 0; r < len(s); r++ {
+		if c := s[r]; c <= ' ' || (c == '.' && r > slash) || c == '%' || c == '"' || c >= 0x7F {
+			p = append(p, '%', hex[c>>4], hex[c&0xF])
+		} else {
+			p = append(p, c)
+		}
+	}
+
+	return string(p)
+}
+
+// init initializes r to read package p from f.
+func (r *objReader) init(f io.ReadSeeker, p *Package) {
+	r.f = f
+	r.p = p
+	r.offset, _ = f.Seek(0, io.SeekCurrent)
+	r.limit, _ = f.Seek(0, io.SeekEnd)
+	f.Seek(r.offset, io.SeekStart)
+	r.b = bufio.NewReader(f)
+	r.pkgprefix = importPathToPrefix(p.ImportPath) + "."
+}
+
+// error records that an error occurred.
+// It returns only the first error, so that an error
+// caused by an earlier error does not discard information
+// about the earlier error.
+func (r *objReader) error(err error) error {
+	if r.err == nil {
+		if err == io.EOF {
+			err = io.ErrUnexpectedEOF
+		}
+		r.err = err
+	}
+	// panic("corrupt") // useful for debugging
+	return r.err
+}
+
+// readByte reads and returns a byte from the input file.
+// On I/O error or EOF, it records the error but returns byte 0.
+// A sequence of 0 bytes will eventually terminate any
+// parsing state in the object file. In particular, it ends the
+// reading of a varint.
+func (r *objReader) readByte() byte {
+	if r.err != nil {
+		return 0
+	}
+	if r.offset >= r.limit {
+		r.error(io.ErrUnexpectedEOF)
+		return 0
+	}
+	b, err := r.b.ReadByte()
+	if err != nil {
+		if err == io.EOF {
+			err = io.ErrUnexpectedEOF
+		}
+		r.error(err)
+		b = 0
+	} else {
+		r.offset++
+	}
+	return b
+}
+
+// read reads exactly len(b) bytes from the input file.
+// If an error occurs, read returns the error but also
+// records it, so it is safe for callers to ignore the result
+// as long as delaying the report is not a problem.
+func (r *objReader) readFull(b []byte) error {
+	if r.err != nil {
+		return r.err
+	}
+	if r.offset+int64(len(b)) > r.limit {
+		return r.error(io.ErrUnexpectedEOF)
+	}
+	n, err := io.ReadFull(r.b, b)
+	r.offset += int64(n)
+	if err != nil {
+		return r.error(err)
+	}
+	return nil
+}
+
+// readInt reads a zigzag varint from the input file.
+func (r *objReader) readInt() int {
+	var u uint64
+
+	for shift := uint(0); ; shift += 7 {
+		if shift >= 64 {
+			r.error(errCorruptObject)
+			return 0
+		}
+		c := r.readByte()
+		u |= uint64(c&0x7F) << shift
+		if c&0x80 == 0 {
+			break
+		}
+	}
+
+	v := int64(u>>1) ^ (int64(u) << 63 >> 63)
+	if int64(int(v)) != v {
+		r.error(errCorruptObject) // TODO
+		return 0
+	}
+	return int(v)
+}
+
+// readString reads a length-delimited string from the input file.
+func (r *objReader) readString() string {
+	n := r.readInt()
+	buf := make([]byte, n)
+	r.readFull(buf)
+	return string(buf)
+}
+
+// readSymID reads a SymID from the input file.
+func (r *objReader) readSymID() SymID {
+	i := r.readInt()
+	return r.p.SymRefs[i]
+}
+
+func (r *objReader) readRef() {
+	name, vers := r.readString(), r.readInt()
+
+	// In a symbol name in an object file, "". denotes the
+	// prefix for the package in which the object file has been found.
+	// Expand it.
+	name = strings.Replace(name, `"".`, r.pkgprefix, -1)
+
+	// An individual object file only records version 0 (extern) or 1 (static).
+	// To make static symbols unique across all files being read, we
+	// replace version 1 with the version corresponding to the current
+	// file number. The number is incremented on each call to parseObject.
+	if vers != 0 {
+		vers = r.p.MaxVersion
+	}
+	r.p.SymRefs = append(r.p.SymRefs, SymID{name, vers})
+}
+
+// readData reads a data reference from the input file.
+func (r *objReader) readData() Data {
+	n := r.readInt()
+	d := Data{Offset: r.dataOffset, Size: int64(n)}
+	r.dataOffset += int64(n)
+	return d
+}
+
+// skip skips n bytes in the input.
+func (r *objReader) skip(n int64) {
+	if n < 0 {
+		r.error(fmt.Errorf("debug/goobj: internal error: misuse of skip"))
+	}
+	if n < int64(len(r.tmp)) {
+		// Since the data is so small, a just reading from the buffered
+		// reader is better than flushing the buffer and seeking.
+		r.readFull(r.tmp[:n])
+	} else if n <= int64(r.b.Buffered()) {
+		// Even though the data is not small, it has already been read.
+		// Advance the buffer instead of seeking.
+		for n > int64(len(r.tmp)) {
+			r.readFull(r.tmp[:])
+			n -= int64(len(r.tmp))
+		}
+		r.readFull(r.tmp[:n])
+	} else {
+		// Seek, giving up buffered data.
+		_, err := r.f.Seek(r.offset+n, io.SeekStart)
+		if err != nil {
+			r.error(err)
+		}
+		r.offset += n
+		r.b.Reset(r.f)
+	}
+}
+
+// Parse parses an object file or archive from r,
+// assuming that its import path is pkgpath.
+func Parse(r io.ReadSeeker, pkgpath string) (*Package, error) {
+	if pkgpath == "" {
+		pkgpath = `""`
+	}
+	p := new(Package)
+	p.ImportPath = pkgpath
+
+	var rd objReader
+	rd.init(r, p)
+	err := rd.readFull(rd.tmp[:8])
+	if err != nil {
+		if err == io.EOF {
+			err = io.ErrUnexpectedEOF
+		}
+		return nil, err
+	}
+
+	switch {
+	default:
+		return nil, errNotObject
+
+	case bytes.Equal(rd.tmp[:8], archiveHeader):
+		if err := rd.parseArchive(); err != nil {
+			return nil, err
+		}
+	case bytes.Equal(rd.tmp[:8], goobjHeader):
+		if err := rd.parseObject(goobjHeader); err != nil {
+			return nil, err
+		}
+	}
+
+	return p, nil
+}
+
+// trimSpace removes trailing spaces from b and returns the corresponding string.
+// This effectively parses the form used in archive headers.
+func trimSpace(b []byte) string {
+	return string(bytes.TrimRight(b, " "))
+}
+
+// parseArchive parses a Unix archive of Go object files.
+// TODO(rsc): Need to skip non-Go object files.
+// TODO(rsc): Maybe record table of contents in r.p so that
+// linker can avoid having code to parse archives too.
+func (r *objReader) parseArchive() error {
+	for r.offset < r.limit {
+		if err := r.readFull(r.tmp[:60]); err != nil {
+			return err
+		}
+		data := r.tmp[:60]
+
+		// Each file is preceded by this text header (slice indices in first column):
+		//	 0:16	name
+		//	16:28 date
+		//	28:34 uid
+		//	34:40 gid
+		//	40:48 mode
+		//	48:58 size
+		//	58:60 magic - `\n
+		// We only care about name, size, and magic.
+		// The fields are space-padded on the right.
+		// The size is in decimal.
+		// The file data - size bytes - follows the header.
+		// Headers are 2-byte aligned, so if size is odd, an extra padding
+		// byte sits between the file data and the next header.
+		// The file data that follows is padded to an even number of bytes:
+		// if size is odd, an extra padding byte is inserted betw the next header.
+		if len(data) < 60 {
+			return errTruncatedArchive
+		}
+		if !bytes.Equal(data[58:60], archiveMagic) {
+			return errCorruptArchive
+		}
+		name := trimSpace(data[0:16])
+		size, err := strconv.ParseInt(trimSpace(data[48:58]), 10, 64)
+		if err != nil {
+			return errCorruptArchive
+		}
+		data = data[60:]
+		fsize := size + size&1
+		if fsize < 0 || fsize < size {
+			return errCorruptArchive
+		}
+		switch name {
+		case "__.PKGDEF":
+			r.skip(size)
+		default:
+			oldLimit := r.limit
+			r.limit = r.offset + size
+			if err := r.parseObject(nil); err != nil {
+				return fmt.Errorf("parsing archive member %q: %v", name, err)
+			}
+			r.skip(r.limit - r.offset)
+			r.limit = oldLimit
+		}
+		if size&1 != 0 {
+			r.skip(1)
+		}
+	}
+	return nil
+}
+
+// parseObject parses a single Go object file.
+// The prefix is the bytes already read from the file,
+// typically in order to detect that this is an object file.
+// The object file consists of a textual header ending in "\n!\n"
+// and then the part we want to parse begins.
+// The format of that part is defined in a comment at the top
+// of src/liblink/objfile.c.
+func (r *objReader) parseObject(prefix []byte) error {
+	r.p.MaxVersion++
+	h := make([]byte, 0, 256)
+	h = append(h, prefix...)
+	var c1, c2, c3 byte
+	for {
+		c1, c2, c3 = c2, c3, r.readByte()
+		h = append(h, c3)
+		// The new export format can contain 0 bytes.
+		// Don't consider them errors, only look for r.err != nil.
+		if r.err != nil {
+			return errCorruptObject
+		}
+		if c1 == '\n' && c2 == '!' && c3 == '\n' {
+			break
+		}
+	}
+
+	hs := strings.Fields(string(h))
+	if len(hs) >= 4 {
+		r.p.Arch = hs[3]
+	}
+	// TODO: extract OS + build ID if/when we need it
+
+	r.readFull(r.tmp[:8])
+	if !bytes.Equal(r.tmp[:8], []byte("\x00\x00go17ld")) {
+		return r.error(errCorruptObject)
+	}
+
+	b := r.readByte()
+	if b != 1 {
+		return r.error(errCorruptObject)
+	}
+
+	// Direct package dependencies.
+	for {
+		s := r.readString()
+		if s == "" {
+			break
+		}
+		r.p.Imports = append(r.p.Imports, s)
+	}
+
+	r.p.SymRefs = []SymID{{"", 0}}
+	for {
+		if b := r.readByte(); b != 0xfe {
+			if b != 0xff {
+				return r.error(errCorruptObject)
+			}
+			break
+		}
+
+		r.readRef()
+	}
+
+	dataLength := r.readInt()
+	r.readInt() // n relocations - ignore
+	r.readInt() // n pcdata - ignore
+	r.readInt() // n autom - ignore
+	r.readInt() // n funcdata - ignore
+	r.readInt() // n files - ignore
+
+	r.dataOffset = r.offset
+	r.skip(int64(dataLength))
+
+	// Symbols.
+	for {
+		if b := r.readByte(); b != 0xfe {
+			if b != 0xff {
+				return r.error(errCorruptObject)
+			}
+			break
+		}
+
+		typ := r.readInt()
+		s := &Sym{SymID: r.readSymID()}
+		r.p.Syms = append(r.p.Syms, s)
+		s.Kind = SymKind(typ)
+		flags := r.readInt()
+		s.DupOK = flags&1 != 0
+		s.Size = r.readInt()
+		s.Type = r.readSymID()
+		s.Data = r.readData()
+		s.Reloc = make([]Reloc, r.readInt())
+		for i := range s.Reloc {
+			rel := &s.Reloc[i]
+			rel.Offset = r.readInt()
+			rel.Size = r.readInt()
+			rel.Type = obj.RelocType(r.readInt())
+			rel.Add = r.readInt()
+			rel.Sym = r.readSymID()
+		}
+
+		if s.Kind == STEXT {
+			f := new(Func)
+			s.Func = f
+			f.Args = r.readInt()
+			f.Frame = r.readInt()
+			flags := r.readInt()
+			f.Leaf = flags&1 != 0
+			f.NoSplit = r.readInt() != 0
+			f.Var = make([]Var, r.readInt())
+			for i := range f.Var {
+				v := &f.Var[i]
+				v.Name = r.readSymID().Name
+				v.Offset = r.readInt()
+				v.Kind = r.readInt()
+				v.Type = r.readSymID()
+			}
+
+			f.PCSP = r.readData()
+			f.PCFile = r.readData()
+			f.PCLine = r.readData()
+			f.PCData = make([]Data, r.readInt())
+			for i := range f.PCData {
+				f.PCData[i] = r.readData()
+			}
+			f.FuncData = make([]FuncData, r.readInt())
+			for i := range f.FuncData {
+				f.FuncData[i].Sym = r.readSymID()
+			}
+			for i := range f.FuncData {
+				f.FuncData[i].Offset = int64(r.readInt()) // TODO
+			}
+			f.File = make([]string, r.readInt())
+			for i := range f.File {
+				f.File[i] = r.readSymID().Name
+			}
+		}
+	}
+
+	r.readFull(r.tmp[:7])
+	if !bytes.Equal(r.tmp[:7], []byte("\xffgo17ld")) {
+		return r.error(errCorruptObject)
+	}
+
+	return nil
+}
+
+func (r *Reloc) String(insnOffset uint64) string {
+	delta := r.Offset - int(insnOffset)
+	s := fmt.Sprintf("[%d:%d]%s", delta, delta+r.Size, r.Type)
+	if r.Sym.Name != "" {
+		if r.Add != 0 {
+			return fmt.Sprintf("%s:%s+%d", s, r.Sym.Name, r.Add)
+		}
+		return fmt.Sprintf("%s:%s", s, r.Sym.Name)
+	}
+	if r.Add != 0 {
+		return fmt.Sprintf("%s:%d", s, r.Add)
+	}
+	return s
+}
diff --git a/vendor/github.com/google/gops/internal/internal.go b/vendor/github.com/google/gops/internal/internal.go
new file mode 100644
index 00000000..13828220
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/internal.go
@@ -0,0 +1,52 @@
+package internal
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/user"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func ConfigDir() (string, error) {
+	if runtime.GOOS == "windows" {
+		return filepath.Join(os.Getenv("APPDATA"), "gops"), nil
+	}
+	homeDir := guessUnixHomeDir()
+	if homeDir == "" {
+		return "", errors.New("unable to get current user home directory: os/user lookup failed; $HOME is empty")
+	}
+	return filepath.Join(homeDir, ".config", "gops"), nil
+}
+
+func guessUnixHomeDir() string {
+	usr, err := user.Current()
+	if err == nil {
+		return usr.HomeDir
+	}
+	return os.Getenv("HOME")
+}
+
+func PIDFile(pid int) (string, error) {
+	gopsdir, err := ConfigDir()
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("%s/%d", gopsdir, pid), nil
+}
+
+func GetPort(pid int) (string, error) {
+	portfile, err := PIDFile(pid)
+	if err != nil {
+		return "", err
+	}
+	b, err := ioutil.ReadFile(portfile)
+	if err != nil {
+		return "", err
+	}
+	port := strings.TrimSpace(string(b))
+	return port, nil
+}
diff --git a/vendor/github.com/google/gops/internal/obj/addrtype_string.go b/vendor/github.com/google/gops/internal/obj/addrtype_string.go
new file mode 100644
index 00000000..48d498dc
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/addrtype_string.go
@@ -0,0 +1,27 @@
+// Code generated by "stringer -type AddrType cmd/internal/obj"; DO NOT EDIT
+
+package obj
+
+import "fmt"
+
+const (
+	_AddrType_name_0 = "TYPE_NONE"
+	_AddrType_name_1 = "TYPE_BRANCHTYPE_TEXTSIZETYPE_MEMTYPE_CONSTTYPE_FCONSTTYPE_SCONSTTYPE_REGTYPE_ADDRTYPE_SHIFTTYPE_REGREGTYPE_REGREG2TYPE_INDIRTYPE_REGLIST"
+)
+
+var (
+	_AddrType_index_0 = [...]uint8{0, 9}
+	_AddrType_index_1 = [...]uint8{0, 11, 24, 32, 42, 53, 64, 72, 81, 91, 102, 114, 124, 136}
+)
+
+func (i AddrType) String() string {
+	switch {
+	case i == 0:
+		return _AddrType_name_0
+	case 6 <= i && i <= 18:
+		i -= 6
+		return _AddrType_name_1[_AddrType_index_1[i]:_AddrType_index_1[i+1]]
+	default:
+		return fmt.Sprintf("AddrType(%d)", i)
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm/a.out.go b/vendor/github.com/google/gops/internal/obj/arm/a.out.go
new file mode 100644
index 00000000..a3e0c180
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm/a.out.go
@@ -0,0 +1,338 @@
+// Inferno utils/5c/5.out.h
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/5c/5.out.h
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm
+
+import "github.com/google/gops/internal/obj"
+
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p arm
+
+const (
+	NSNAME = 8
+	NSYM   = 50
+	NREG   = 16
+)
+
+/* -1 disables use of REGARG */
+const (
+	REGARG = -1
+)
+
+const (
+	REG_R0 = obj.RBaseARM + iota // must be 16-aligned
+	REG_R1
+	REG_R2
+	REG_R3
+	REG_R4
+	REG_R5
+	REG_R6
+	REG_R7
+	REG_R8
+	REG_R9
+	REG_R10
+	REG_R11
+	REG_R12
+	REG_R13
+	REG_R14
+	REG_R15
+
+	REG_F0 // must be 16-aligned
+	REG_F1
+	REG_F2
+	REG_F3
+	REG_F4
+	REG_F5
+	REG_F6
+	REG_F7
+	REG_F8
+	REG_F9
+	REG_F10
+	REG_F11
+	REG_F12
+	REG_F13
+	REG_F14
+	REG_F15
+
+	REG_FPSR // must be 2-aligned
+	REG_FPCR
+
+	REG_CPSR // must be 2-aligned
+	REG_SPSR
+
+	MAXREG
+	REGRET = REG_R0
+	/* compiler allocates R1 up as temps */
+	/* compiler allocates register variables R3 up */
+	/* compiler allocates external registers R10 down */
+	REGEXT = REG_R10
+	/* these two registers are declared in runtime.h */
+	REGG = REGEXT - 0
+	REGM = REGEXT - 1
+
+	REGCTXT = REG_R7
+	REGTMP  = REG_R11
+	REGSP   = REG_R13
+	REGLINK = REG_R14
+	REGPC   = REG_R15
+
+	NFREG = 16
+	/* compiler allocates register variables F0 up */
+	/* compiler allocates external registers F7 down */
+	FREGRET = REG_F0
+	FREGEXT = REG_F7
+	FREGTMP = REG_F15
+)
+
+const (
+	C_NONE = iota
+	C_REG
+	C_REGREG
+	C_REGREG2
+	C_REGLIST
+	C_SHIFT
+	C_FREG
+	C_PSR
+	C_FCR
+
+	C_RCON /* 0xff rotated */
+	C_NCON /* ~RCON */
+	C_SCON /* 0xffff */
+	C_LCON
+	C_LCONADDR
+	C_ZFCON
+	C_SFCON
+	C_LFCON
+
+	C_RACON
+	C_LACON
+
+	C_SBRA
+	C_LBRA
+
+	C_HAUTO  /* halfword insn offset (-0xff to 0xff) */
+	C_FAUTO  /* float insn offset (0 to 0x3fc, word aligned) */
+	C_HFAUTO /* both H and F */
+	C_SAUTO  /* -0xfff to 0xfff */
+	C_LAUTO
+
+	C_HOREG
+	C_FOREG
+	C_HFOREG
+	C_SOREG
+	C_ROREG
+	C_SROREG /* both nil and R */
+	C_LOREG
+
+	C_PC
+	C_SP
+	C_HREG
+
+	C_ADDR /* reference to relocatable address */
+
+	// TLS "var" in local exec mode: will become a constant offset from
+	// thread local base that is ultimately chosen by the program linker.
+	C_TLS_LE
+
+	// TLS "var" in initial exec mode: will become a memory address (chosen
+	// by the program linker) that the dynamic linker will fill with the
+	// offset from the thread local base.
+	C_TLS_IE
+
+	C_TEXTSIZE
+
+	C_GOK
+
+	C_NCLASS /* must be the last */
+)
+
+const (
+	AAND = obj.ABaseARM + obj.A_ARCHSPECIFIC + iota
+	AEOR
+	ASUB
+	ARSB
+	AADD
+	AADC
+	ASBC
+	ARSC
+	ATST
+	ATEQ
+	ACMP
+	ACMN
+	AORR
+	ABIC
+
+	AMVN
+
+	/*
+	 * Do not reorder or fragment the conditional branch
+	 * opcodes, or the predication code will break
+	 */
+	ABEQ
+	ABNE
+	ABCS
+	ABHS
+	ABCC
+	ABLO
+	ABMI
+	ABPL
+	ABVS
+	ABVC
+	ABHI
+	ABLS
+	ABGE
+	ABLT
+	ABGT
+	ABLE
+
+	AMOVWD
+	AMOVWF
+	AMOVDW
+	AMOVFW
+	AMOVFD
+	AMOVDF
+	AMOVF
+	AMOVD
+
+	ACMPF
+	ACMPD
+	AADDF
+	AADDD
+	ASUBF
+	ASUBD
+	AMULF
+	AMULD
+	ADIVF
+	ADIVD
+	ASQRTF
+	ASQRTD
+	AABSF
+	AABSD
+	ANEGF
+	ANEGD
+
+	ASRL
+	ASRA
+	ASLL
+	AMULU
+	ADIVU
+	AMUL
+	ADIV
+	AMOD
+	AMODU
+
+	AMOVB
+	AMOVBS
+	AMOVBU
+	AMOVH
+	AMOVHS
+	AMOVHU
+	AMOVW
+	AMOVM
+	ASWPBU
+	ASWPW
+
+	ARFE
+	ASWI
+	AMULA
+
+	AWORD
+
+	AMULL
+	AMULAL
+	AMULLU
+	AMULALU
+
+	ABX
+	ABXRET
+	ADWORD
+
+	ALDREX
+	ASTREX
+	ALDREXD
+	ASTREXD
+
+	APLD
+
+	ACLZ
+
+	AMULWT
+	AMULWB
+	AMULAWT
+	AMULAWB
+
+	ADATABUNDLE
+	ADATABUNDLEEND
+
+	AMRC // MRC/MCR
+
+	ALAST
+
+	// aliases
+	AB  = obj.AJMP
+	ABL = obj.ACALL
+)
+
+/* scond byte */
+const (
+	C_SCOND = (1 << 4) - 1
+	C_SBIT  = 1 << 4
+	C_PBIT  = 1 << 5
+	C_WBIT  = 1 << 6
+	C_FBIT  = 1 << 7 /* psr flags-only */
+	C_UBIT  = 1 << 7 /* up bit, unsigned bit */
+
+	// These constants are the ARM condition codes encodings,
+	// XORed with 14 so that C_SCOND_NONE has value 0,
+	// so that a zeroed Prog.scond means "always execute".
+	C_SCOND_XOR = 14
+
+	C_SCOND_EQ   = 0 ^ C_SCOND_XOR
+	C_SCOND_NE   = 1 ^ C_SCOND_XOR
+	C_SCOND_HS   = 2 ^ C_SCOND_XOR
+	C_SCOND_LO   = 3 ^ C_SCOND_XOR
+	C_SCOND_MI   = 4 ^ C_SCOND_XOR
+	C_SCOND_PL   = 5 ^ C_SCOND_XOR
+	C_SCOND_VS   = 6 ^ C_SCOND_XOR
+	C_SCOND_VC   = 7 ^ C_SCOND_XOR
+	C_SCOND_HI   = 8 ^ C_SCOND_XOR
+	C_SCOND_LS   = 9 ^ C_SCOND_XOR
+	C_SCOND_GE   = 10 ^ C_SCOND_XOR
+	C_SCOND_LT   = 11 ^ C_SCOND_XOR
+	C_SCOND_GT   = 12 ^ C_SCOND_XOR
+	C_SCOND_LE   = 13 ^ C_SCOND_XOR
+	C_SCOND_NONE = 14 ^ C_SCOND_XOR
+	C_SCOND_NV   = 15 ^ C_SCOND_XOR
+
+	/* D_SHIFT type */
+	SHIFT_LL = 0 << 5
+	SHIFT_LR = 1 << 5
+	SHIFT_AR = 2 << 5
+	SHIFT_RR = 3 << 5
+)
diff --git a/vendor/github.com/google/gops/internal/obj/arm/anames.go b/vendor/github.com/google/gops/internal/obj/arm/anames.go
new file mode 100644
index 00000000..42abc946
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm/anames.go
@@ -0,0 +1,108 @@
+// Generated by stringer -i a.out.go -o anames.go -p arm
+// Do not edit.
+
+package arm
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "AND",
+	"EOR",
+	"SUB",
+	"RSB",
+	"ADD",
+	"ADC",
+	"SBC",
+	"RSC",
+	"TST",
+	"TEQ",
+	"CMP",
+	"CMN",
+	"ORR",
+	"BIC",
+	"MVN",
+	"BEQ",
+	"BNE",
+	"BCS",
+	"BHS",
+	"BCC",
+	"BLO",
+	"BMI",
+	"BPL",
+	"BVS",
+	"BVC",
+	"BHI",
+	"BLS",
+	"BGE",
+	"BLT",
+	"BGT",
+	"BLE",
+	"MOVWD",
+	"MOVWF",
+	"MOVDW",
+	"MOVFW",
+	"MOVFD",
+	"MOVDF",
+	"MOVF",
+	"MOVD",
+	"CMPF",
+	"CMPD",
+	"ADDF",
+	"ADDD",
+	"SUBF",
+	"SUBD",
+	"MULF",
+	"MULD",
+	"DIVF",
+	"DIVD",
+	"SQRTF",
+	"SQRTD",
+	"ABSF",
+	"ABSD",
+	"NEGF",
+	"NEGD",
+	"SRL",
+	"SRA",
+	"SLL",
+	"MULU",
+	"DIVU",
+	"MUL",
+	"DIV",
+	"MOD",
+	"MODU",
+	"MOVB",
+	"MOVBS",
+	"MOVBU",
+	"MOVH",
+	"MOVHS",
+	"MOVHU",
+	"MOVW",
+	"MOVM",
+	"SWPBU",
+	"SWPW",
+	"RFE",
+	"SWI",
+	"MULA",
+	"WORD",
+	"MULL",
+	"MULAL",
+	"MULLU",
+	"MULALU",
+	"BX",
+	"BXRET",
+	"DWORD",
+	"LDREX",
+	"STREX",
+	"LDREXD",
+	"STREXD",
+	"PLD",
+	"CLZ",
+	"MULWT",
+	"MULWB",
+	"MULAWT",
+	"MULAWB",
+	"DATABUNDLE",
+	"DATABUNDLEEND",
+	"MRC",
+	"LAST",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm/anames5.go b/vendor/github.com/google/gops/internal/obj/arm/anames5.go
new file mode 100644
index 00000000..7fdd9623
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm/anames5.go
@@ -0,0 +1,73 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package arm
+
+var cnames5 = []string{
+	"NONE",
+	"REG",
+	"REGREG",
+	"REGREG2",
+	"REGLIST",
+	"SHIFT",
+	"FREG",
+	"PSR",
+	"FCR",
+	"RCON",
+	"NCON",
+	"SCON",
+	"LCON",
+	"LCONADDR",
+	"ZFCON",
+	"SFCON",
+	"LFCON",
+	"RACON",
+	"LACON",
+	"SBRA",
+	"LBRA",
+	"HAUTO",
+	"FAUTO",
+	"HFAUTO",
+	"SAUTO",
+	"LAUTO",
+	"HOREG",
+	"FOREG",
+	"HFOREG",
+	"SOREG",
+	"ROREG",
+	"SROREG",
+	"LOREG",
+	"PC",
+	"SP",
+	"HREG",
+	"ADDR",
+	"C_TLS_LE",
+	"C_TLS_IE",
+	"TEXTSIZE",
+	"GOK",
+	"NCLASS",
+	"SCOND = (1<<4)-1",
+	"SBIT = 1<<4",
+	"PBIT = 1<<5",
+	"WBIT = 1<<6",
+	"FBIT = 1<<7",
+	"UBIT = 1<<7",
+	"SCOND_XOR = 14",
+	"SCOND_EQ = 0 ^ C_SCOND_XOR",
+	"SCOND_NE = 1 ^ C_SCOND_XOR",
+	"SCOND_HS = 2 ^ C_SCOND_XOR",
+	"SCOND_LO = 3 ^ C_SCOND_XOR",
+	"SCOND_MI = 4 ^ C_SCOND_XOR",
+	"SCOND_PL = 5 ^ C_SCOND_XOR",
+	"SCOND_VS = 6 ^ C_SCOND_XOR",
+	"SCOND_VC = 7 ^ C_SCOND_XOR",
+	"SCOND_HI = 8 ^ C_SCOND_XOR",
+	"SCOND_LS = 9 ^ C_SCOND_XOR",
+	"SCOND_GE = 10 ^ C_SCOND_XOR",
+	"SCOND_LT = 11 ^ C_SCOND_XOR",
+	"SCOND_GT = 12 ^ C_SCOND_XOR",
+	"SCOND_LE = 13 ^ C_SCOND_XOR",
+	"SCOND_NONE = 14 ^ C_SCOND_XOR",
+	"SCOND_NV = 15 ^ C_SCOND_XOR",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm/asm5.go b/vendor/github.com/google/gops/internal/obj/arm/asm5.go
new file mode 100644
index 00000000..aa8149d5
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm/asm5.go
@@ -0,0 +1,2846 @@
+// Inferno utils/5l/span.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/5l/span.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm
+
+import (
+	"fmt"
+	"log"
+	"math"
+	"sort"
+
+	"github.com/google/gops/internal/obj"
+)
+
+type Optab struct {
+	as       obj.As
+	a1       uint8
+	a2       int8
+	a3       uint8
+	type_    uint8
+	size     int8
+	param    int16
+	flag     int8
+	pcrelsiz uint8
+}
+
+type Opcross [32][2][32]uint8
+
+const (
+	LFROM  = 1 << 0
+	LTO    = 1 << 1
+	LPOOL  = 1 << 2
+	LPCREL = 1 << 3
+)
+
+var optab = []Optab{
+	/* struct Optab:
+	OPCODE,	from, prog->reg, to,		 type,size,param,flag */
+	{obj.ATEXT, C_ADDR, C_NONE, C_TEXTSIZE, 0, 0, 0, 0, 0},
+	{AADD, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{AADD, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{AMVN, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{ACMP, C_REG, C_REG, C_NONE, 1, 4, 0, 0, 0},
+	{AADD, C_RCON, C_REG, C_REG, 2, 4, 0, 0, 0},
+	{AADD, C_RCON, C_NONE, C_REG, 2, 4, 0, 0, 0},
+	{AMOVW, C_RCON, C_NONE, C_REG, 2, 4, 0, 0, 0},
+	{AMVN, C_RCON, C_NONE, C_REG, 2, 4, 0, 0, 0},
+	{ACMP, C_RCON, C_REG, C_NONE, 2, 4, 0, 0, 0},
+	{AADD, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0},
+	{AADD, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0},
+	{AMVN, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0},
+	{ACMP, C_SHIFT, C_REG, C_NONE, 3, 4, 0, 0, 0},
+	{AMOVW, C_RACON, C_NONE, C_REG, 4, 4, REGSP, 0, 0},
+	{AB, C_NONE, C_NONE, C_SBRA, 5, 4, 0, LPOOL, 0},
+	{ABL, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0},
+	{ABX, C_NONE, C_NONE, C_SBRA, 74, 20, 0, 0, 0},
+	{ABEQ, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0},
+	{ABEQ, C_RCON, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // prediction hinted form, hint ignored
+
+	{AB, C_NONE, C_NONE, C_ROREG, 6, 4, 0, LPOOL, 0},
+	{ABL, C_NONE, C_NONE, C_ROREG, 7, 4, 0, 0, 0},
+	{ABL, C_REG, C_NONE, C_ROREG, 7, 4, 0, 0, 0},
+	{ABX, C_NONE, C_NONE, C_ROREG, 75, 12, 0, 0, 0},
+	{ABXRET, C_NONE, C_NONE, C_ROREG, 76, 4, 0, 0, 0},
+	{ASLL, C_RCON, C_REG, C_REG, 8, 4, 0, 0, 0},
+	{ASLL, C_RCON, C_NONE, C_REG, 8, 4, 0, 0, 0},
+	{ASLL, C_REG, C_NONE, C_REG, 9, 4, 0, 0, 0},
+	{ASLL, C_REG, C_REG, C_REG, 9, 4, 0, 0, 0},
+	{ASWI, C_NONE, C_NONE, C_NONE, 10, 4, 0, 0, 0},
+	{ASWI, C_NONE, C_NONE, C_LOREG, 10, 4, 0, 0, 0},
+	{ASWI, C_NONE, C_NONE, C_LCON, 10, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_LCON, 11, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_LCONADDR, 11, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_ADDR, 11, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_TLS_LE, 103, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_TLS_IE, 104, 4, 0, 0, 0},
+	{AMOVW, C_NCON, C_NONE, C_REG, 12, 4, 0, 0, 0},
+	{AMOVW, C_LCON, C_NONE, C_REG, 12, 4, 0, LFROM, 0},
+	{AMOVW, C_LCONADDR, C_NONE, C_REG, 12, 4, 0, LFROM | LPCREL, 4},
+	{AADD, C_NCON, C_REG, C_REG, 13, 8, 0, 0, 0},
+	{AADD, C_NCON, C_NONE, C_REG, 13, 8, 0, 0, 0},
+	{AMVN, C_NCON, C_NONE, C_REG, 13, 8, 0, 0, 0},
+	{ACMP, C_NCON, C_REG, C_NONE, 13, 8, 0, 0, 0},
+	{AADD, C_LCON, C_REG, C_REG, 13, 8, 0, LFROM, 0},
+	{AADD, C_LCON, C_NONE, C_REG, 13, 8, 0, LFROM, 0},
+	{AMVN, C_LCON, C_NONE, C_REG, 13, 8, 0, LFROM, 0},
+	{ACMP, C_LCON, C_REG, C_NONE, 13, 8, 0, LFROM, 0},
+	{AMOVB, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{AMOVBS, C_REG, C_NONE, C_REG, 14, 8, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_REG, 58, 4, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{AMOVHS, C_REG, C_NONE, C_REG, 14, 8, 0, 0, 0},
+	{AMOVHU, C_REG, C_NONE, C_REG, 14, 8, 0, 0, 0},
+	{AMUL, C_REG, C_REG, C_REG, 15, 4, 0, 0, 0},
+	{AMUL, C_REG, C_NONE, C_REG, 15, 4, 0, 0, 0},
+	{ADIV, C_REG, C_REG, C_REG, 16, 4, 0, 0, 0},
+	{ADIV, C_REG, C_NONE, C_REG, 16, 4, 0, 0, 0},
+	{AMULL, C_REG, C_REG, C_REGREG, 17, 4, 0, 0, 0},
+	{AMULA, C_REG, C_REG, C_REGREG2, 17, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_SOREG, 20, 4, 0, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_SOREG, 20, 4, 0, 0, 0},
+	{AMOVBS, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVBS, C_REG, C_NONE, C_SOREG, 20, 4, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_SAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_SOREG, 20, 4, 0, 0, 0},
+	{AMOVW, C_SAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVW, C_SOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVBU, C_SAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVBU, C_SOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0},
+	{AMOVW, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0},
+	{AMOVW, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO | LPCREL, 4},
+	{AMOVB, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0},
+	{AMOVB, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0},
+	{AMOVB, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO | LPCREL, 4},
+	{AMOVBS, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0},
+	{AMOVBS, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0},
+	{AMOVBS, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO | LPCREL, 4},
+	{AMOVBU, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0},
+	{AMOVBU, C_REG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0},
+	{AMOVBU, C_REG, C_NONE, C_ADDR, 64, 8, 0, LTO | LPCREL, 4},
+	{AMOVW, C_TLS_LE, C_NONE, C_REG, 101, 4, 0, LFROM, 0},
+	{AMOVW, C_TLS_IE, C_NONE, C_REG, 102, 8, 0, LFROM, 0},
+	{AMOVW, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, LFROM, 0},
+	{AMOVW, C_LOREG, C_NONE, C_REG, 31, 8, 0, LFROM, 0},
+	{AMOVW, C_ADDR, C_NONE, C_REG, 65, 8, 0, LFROM | LPCREL, 4},
+	{AMOVBU, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, LFROM, 0},
+	{AMOVBU, C_LOREG, C_NONE, C_REG, 31, 8, 0, LFROM, 0},
+	{AMOVBU, C_ADDR, C_NONE, C_REG, 65, 8, 0, LFROM | LPCREL, 4},
+	{AMOVW, C_LACON, C_NONE, C_REG, 34, 8, REGSP, LFROM, 0},
+	{AMOVW, C_PSR, C_NONE, C_REG, 35, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_PSR, 36, 4, 0, 0, 0},
+	{AMOVW, C_RCON, C_NONE, C_PSR, 37, 4, 0, 0, 0},
+	{AMOVM, C_REGLIST, C_NONE, C_SOREG, 38, 4, 0, 0, 0},
+	{AMOVM, C_SOREG, C_NONE, C_REGLIST, 39, 4, 0, 0, 0},
+	{ASWPW, C_SOREG, C_REG, C_REG, 40, 4, 0, 0, 0},
+	{ARFE, C_NONE, C_NONE, C_NONE, 41, 4, 0, 0, 0},
+	{AMOVF, C_FREG, C_NONE, C_FAUTO, 50, 4, REGSP, 0, 0},
+	{AMOVF, C_FREG, C_NONE, C_FOREG, 50, 4, 0, 0, 0},
+	{AMOVF, C_FAUTO, C_NONE, C_FREG, 51, 4, REGSP, 0, 0},
+	{AMOVF, C_FOREG, C_NONE, C_FREG, 51, 4, 0, 0, 0},
+	{AMOVF, C_FREG, C_NONE, C_LAUTO, 52, 12, REGSP, LTO, 0},
+	{AMOVF, C_FREG, C_NONE, C_LOREG, 52, 12, 0, LTO, 0},
+	{AMOVF, C_LAUTO, C_NONE, C_FREG, 53, 12, REGSP, LFROM, 0},
+	{AMOVF, C_LOREG, C_NONE, C_FREG, 53, 12, 0, LFROM, 0},
+	{AMOVF, C_FREG, C_NONE, C_ADDR, 68, 8, 0, LTO | LPCREL, 4},
+	{AMOVF, C_ADDR, C_NONE, C_FREG, 69, 8, 0, LFROM | LPCREL, 4},
+	{AADDF, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AADDF, C_FREG, C_REG, C_FREG, 54, 4, 0, 0, 0},
+	{AMOVF, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_FCR, 56, 4, 0, 0, 0},
+	{AMOVW, C_FCR, C_NONE, C_REG, 57, 4, 0, 0, 0},
+	{AMOVW, C_SHIFT, C_NONE, C_REG, 59, 4, 0, 0, 0},
+	{AMOVBU, C_SHIFT, C_NONE, C_REG, 59, 4, 0, 0, 0},
+	{AMOVB, C_SHIFT, C_NONE, C_REG, 60, 4, 0, 0, 0},
+	{AMOVBS, C_SHIFT, C_NONE, C_REG, 60, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_SHIFT, 61, 4, 0, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_SHIFT, 61, 4, 0, 0, 0},
+	{AMOVBS, C_REG, C_NONE, C_SHIFT, 61, 4, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_SHIFT, 61, 4, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_HAUTO, 70, 4, REGSP, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_HOREG, 70, 4, 0, 0, 0},
+	{AMOVHS, C_REG, C_NONE, C_HAUTO, 70, 4, REGSP, 0, 0},
+	{AMOVHS, C_REG, C_NONE, C_HOREG, 70, 4, 0, 0, 0},
+	{AMOVHU, C_REG, C_NONE, C_HAUTO, 70, 4, REGSP, 0, 0},
+	{AMOVHU, C_REG, C_NONE, C_HOREG, 70, 4, 0, 0, 0},
+	{AMOVB, C_HAUTO, C_NONE, C_REG, 71, 4, REGSP, 0, 0},
+	{AMOVB, C_HOREG, C_NONE, C_REG, 71, 4, 0, 0, 0},
+	{AMOVBS, C_HAUTO, C_NONE, C_REG, 71, 4, REGSP, 0, 0},
+	{AMOVBS, C_HOREG, C_NONE, C_REG, 71, 4, 0, 0, 0},
+	{AMOVH, C_HAUTO, C_NONE, C_REG, 71, 4, REGSP, 0, 0},
+	{AMOVH, C_HOREG, C_NONE, C_REG, 71, 4, 0, 0, 0},
+	{AMOVHS, C_HAUTO, C_NONE, C_REG, 71, 4, REGSP, 0, 0},
+	{AMOVHS, C_HOREG, C_NONE, C_REG, 71, 4, 0, 0, 0},
+	{AMOVHU, C_HAUTO, C_NONE, C_REG, 71, 4, REGSP, 0, 0},
+	{AMOVHU, C_HOREG, C_NONE, C_REG, 71, 4, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_LAUTO, 72, 8, REGSP, LTO, 0},
+	{AMOVH, C_REG, C_NONE, C_LOREG, 72, 8, 0, LTO, 0},
+	{AMOVH, C_REG, C_NONE, C_ADDR, 94, 8, 0, LTO | LPCREL, 4},
+	{AMOVHS, C_REG, C_NONE, C_LAUTO, 72, 8, REGSP, LTO, 0},
+	{AMOVHS, C_REG, C_NONE, C_LOREG, 72, 8, 0, LTO, 0},
+	{AMOVHS, C_REG, C_NONE, C_ADDR, 94, 8, 0, LTO | LPCREL, 4},
+	{AMOVHU, C_REG, C_NONE, C_LAUTO, 72, 8, REGSP, LTO, 0},
+	{AMOVHU, C_REG, C_NONE, C_LOREG, 72, 8, 0, LTO, 0},
+	{AMOVHU, C_REG, C_NONE, C_ADDR, 94, 8, 0, LTO | LPCREL, 4},
+	{AMOVB, C_LAUTO, C_NONE, C_REG, 73, 8, REGSP, LFROM, 0},
+	{AMOVB, C_LOREG, C_NONE, C_REG, 73, 8, 0, LFROM, 0},
+	{AMOVB, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM | LPCREL, 4},
+	{AMOVBS, C_LAUTO, C_NONE, C_REG, 73, 8, REGSP, LFROM, 0},
+	{AMOVBS, C_LOREG, C_NONE, C_REG, 73, 8, 0, LFROM, 0},
+	{AMOVBS, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM | LPCREL, 4},
+	{AMOVH, C_LAUTO, C_NONE, C_REG, 73, 8, REGSP, LFROM, 0},
+	{AMOVH, C_LOREG, C_NONE, C_REG, 73, 8, 0, LFROM, 0},
+	{AMOVH, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM | LPCREL, 4},
+	{AMOVHS, C_LAUTO, C_NONE, C_REG, 73, 8, REGSP, LFROM, 0},
+	{AMOVHS, C_LOREG, C_NONE, C_REG, 73, 8, 0, LFROM, 0},
+	{AMOVHS, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM | LPCREL, 4},
+	{AMOVHU, C_LAUTO, C_NONE, C_REG, 73, 8, REGSP, LFROM, 0},
+	{AMOVHU, C_LOREG, C_NONE, C_REG, 73, 8, 0, LFROM, 0},
+	{AMOVHU, C_ADDR, C_NONE, C_REG, 93, 8, 0, LFROM | LPCREL, 4},
+	{ALDREX, C_SOREG, C_NONE, C_REG, 77, 4, 0, 0, 0},
+	{ASTREX, C_SOREG, C_REG, C_REG, 78, 4, 0, 0, 0},
+	{AMOVF, C_ZFCON, C_NONE, C_FREG, 80, 8, 0, 0, 0},
+	{AMOVF, C_SFCON, C_NONE, C_FREG, 81, 4, 0, 0, 0},
+	{ACMPF, C_FREG, C_REG, C_NONE, 82, 8, 0, 0, 0},
+	{ACMPF, C_FREG, C_NONE, C_NONE, 83, 8, 0, 0, 0},
+	{AMOVFW, C_FREG, C_NONE, C_FREG, 84, 4, 0, 0, 0},
+	{AMOVWF, C_FREG, C_NONE, C_FREG, 85, 4, 0, 0, 0},
+	{AMOVFW, C_FREG, C_NONE, C_REG, 86, 8, 0, 0, 0},
+	{AMOVWF, C_REG, C_NONE, C_FREG, 87, 8, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_FREG, 88, 4, 0, 0, 0},
+	{AMOVW, C_FREG, C_NONE, C_REG, 89, 4, 0, 0, 0},
+	{ATST, C_REG, C_NONE, C_NONE, 90, 4, 0, 0, 0},
+	{ALDREXD, C_SOREG, C_NONE, C_REG, 91, 4, 0, 0, 0},
+	{ASTREXD, C_SOREG, C_REG, C_REG, 92, 4, 0, 0, 0},
+	{APLD, C_SOREG, C_NONE, C_NONE, 95, 4, 0, 0, 0},
+	{obj.AUNDEF, C_NONE, C_NONE, C_NONE, 96, 4, 0, 0, 0},
+	{ACLZ, C_REG, C_NONE, C_REG, 97, 4, 0, 0, 0},
+	{AMULWT, C_REG, C_REG, C_REG, 98, 4, 0, 0, 0},
+	{AMULAWT, C_REG, C_REG, C_REGREG2, 99, 4, 0, 0, 0},
+	{obj.AUSEFIELD, C_ADDR, C_NONE, C_NONE, 0, 0, 0, 0, 0},
+	{obj.APCDATA, C_LCON, C_NONE, C_LCON, 0, 0, 0, 0, 0},
+	{obj.AFUNCDATA, C_LCON, C_NONE, C_ADDR, 0, 0, 0, 0, 0},
+	{obj.ANOP, C_NONE, C_NONE, C_NONE, 0, 0, 0, 0, 0},
+	{obj.ADUFFZERO, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // same as ABL
+	{obj.ADUFFCOPY, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // same as ABL
+
+	{ADATABUNDLE, C_NONE, C_NONE, C_NONE, 100, 4, 0, 0, 0},
+	{ADATABUNDLEEND, C_NONE, C_NONE, C_NONE, 100, 0, 0, 0, 0},
+	{obj.AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0, 0, 0},
+}
+
+var pool struct {
+	start uint32
+	size  uint32
+	extra uint32
+}
+
+var oprange [ALAST & obj.AMask][]Optab
+
+var xcmp [C_GOK + 1][C_GOK + 1]bool
+
+var deferreturn *obj.LSym
+
+// Note about encoding: Prog.scond holds the condition encoding,
+// but XOR'ed with C_SCOND_XOR, so that C_SCOND_NONE == 0.
+// The code that shifts the value << 28 has the responsibility
+// for XORing with C_SCOND_XOR too.
+
+// asmoutnacl assembles the instruction p. It replaces asmout for NaCl.
+// It returns the total number of bytes put in out, and it can change
+// p->pc if extra padding is necessary.
+// In rare cases, asmoutnacl might split p into two instructions.
+// origPC is the PC for this Prog (no padding is taken into account).
+func asmoutnacl(ctxt *obj.Link, origPC int32, p *obj.Prog, o *Optab, out []uint32) int {
+	size := int(o.size)
+
+	// instruction specific
+	switch p.As {
+	default:
+		if out != nil {
+			asmout(ctxt, p, o, out)
+		}
+
+	case ADATABUNDLE, // align to 16-byte boundary
+		ADATABUNDLEEND: // zero width instruction, just to align next instruction to 16-byte boundary
+		p.Pc = (p.Pc + 15) &^ 15
+
+		if out != nil {
+			asmout(ctxt, p, o, out)
+		}
+
+	case obj.AUNDEF,
+		APLD:
+		size = 4
+		if out != nil {
+			switch p.As {
+			case obj.AUNDEF:
+				out[0] = 0xe7fedef0 // NACL_INSTR_ARM_ABORT_NOW (UDF #0xEDE0)
+
+			case APLD:
+				out[0] = 0xe1a01001 // (MOVW R1, R1)
+			}
+		}
+
+	case AB, ABL:
+		if p.To.Type != obj.TYPE_MEM {
+			if out != nil {
+				asmout(ctxt, p, o, out)
+			}
+		} else {
+			if p.To.Offset != 0 || size != 4 || p.To.Reg > REG_R15 || p.To.Reg < REG_R0 {
+				ctxt.Diag("unsupported instruction: %v", p)
+			}
+			if p.Pc&15 == 12 {
+				p.Pc += 4
+			}
+			if out != nil {
+				out[0] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x03c0013f | (uint32(p.To.Reg)&15)<<12 | (uint32(p.To.Reg)&15)<<16 // BIC $0xc000000f, Rx
+				if p.As == AB {
+					out[1] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x012fff10 | (uint32(p.To.Reg)&15)<<0 // BX Rx
+				} else { // ABL
+					out[1] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x012fff30 | (uint32(p.To.Reg)&15)<<0 // BLX Rx
+				}
+			}
+
+			size = 8
+		}
+
+		// align the last instruction (the actual BL) to the last instruction in a bundle
+		if p.As == ABL {
+			if deferreturn == nil {
+				deferreturn = obj.Linklookup(ctxt, "runtime.deferreturn", 0)
+			}
+			if p.To.Sym == deferreturn {
+				p.Pc = ((int64(origPC) + 15) &^ 15) + 16 - int64(size)
+			} else {
+				p.Pc += (16 - ((p.Pc + int64(size)) & 15)) & 15
+			}
+		}
+
+	case ALDREX,
+		ALDREXD,
+		AMOVB,
+		AMOVBS,
+		AMOVBU,
+		AMOVD,
+		AMOVF,
+		AMOVH,
+		AMOVHS,
+		AMOVHU,
+		AMOVM,
+		AMOVW,
+		ASTREX,
+		ASTREXD:
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REG_R15 && p.From.Reg == REG_R13 { // MOVW.W x(R13), PC
+			if out != nil {
+				asmout(ctxt, p, o, out)
+			}
+			if size == 4 {
+				if out != nil {
+					// Note: 5c and 5g reg.c know that DIV/MOD smashes R12
+					// so that this return instruction expansion is valid.
+					out[0] = out[0] &^ 0x3000                                         // change PC to R12
+					out[1] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x03ccc13f // BIC $0xc000000f, R12
+					out[2] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x012fff1c // BX R12
+				}
+
+				size += 8
+				if (p.Pc+int64(size))&15 == 4 {
+					p.Pc += 4
+				}
+				break
+			} else {
+				// if the instruction used more than 4 bytes, then it must have used a very large
+				// offset to update R13, so we need to additionally mask R13.
+				if out != nil {
+					out[size/4-1] &^= 0x3000                                                 // change PC to R12
+					out[size/4] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x03cdd103   // BIC $0xc0000000, R13
+					out[size/4+1] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x03ccc13f // BIC $0xc000000f, R12
+					out[size/4+2] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x012fff1c // BX R12
+				}
+
+				// p->pc+size is only ok at 4 or 12 mod 16.
+				if (p.Pc+int64(size))%8 == 0 {
+					p.Pc += 4
+				}
+				size += 12
+				break
+			}
+		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REG_R15 {
+			ctxt.Diag("unsupported instruction (move to another register and use indirect jump instead): %v", p)
+		}
+
+		if p.To.Type == obj.TYPE_MEM && p.To.Reg == REG_R13 && (p.Scond&C_WBIT != 0) && size > 4 {
+			// function prolog with very large frame size: MOVW.W R14,-100004(R13)
+			// split it into two instructions:
+			// 	ADD $-100004, R13
+			// 	MOVW R14, 0(R13)
+			q := ctxt.NewProg()
+
+			p.Scond &^= C_WBIT
+			*q = *p
+			a := &p.To
+			var a2 *obj.Addr
+			if p.To.Type == obj.TYPE_MEM {
+				a2 = &q.To
+			} else {
+				a2 = &q.From
+			}
+			nocache(q)
+			nocache(p)
+
+			// insert q after p
+			q.Link = p.Link
+
+			p.Link = q
+			q.Pcond = nil
+
+			// make p into ADD $X, R13
+			p.As = AADD
+
+			p.From = *a
+			p.From.Reg = 0
+			p.From.Type = obj.TYPE_CONST
+			p.To = obj.Addr{}
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_R13
+
+			// make q into p but load/store from 0(R13)
+			q.Spadj = 0
+
+			*a2 = obj.Addr{}
+			a2.Type = obj.TYPE_MEM
+			a2.Reg = REG_R13
+			a2.Sym = nil
+			a2.Offset = 0
+			size = int(oplook(ctxt, p).size)
+			break
+		}
+
+		if (p.To.Type == obj.TYPE_MEM && p.To.Reg != REG_R9) || // MOVW Rx, X(Ry), y != 9
+			(p.From.Type == obj.TYPE_MEM && p.From.Reg != REG_R9) { // MOVW X(Rx), Ry, x != 9
+			var a *obj.Addr
+			if p.To.Type == obj.TYPE_MEM {
+				a = &p.To
+			} else {
+				a = &p.From
+			}
+			reg := int(a.Reg)
+			if size == 4 {
+				// if addr.reg == 0, then it is probably load from x(FP) with small x, no need to modify.
+				if reg == 0 {
+					if out != nil {
+						asmout(ctxt, p, o, out)
+					}
+				} else {
+					if out != nil {
+						out[0] = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x03c00103 | (uint32(reg)&15)<<16 | (uint32(reg)&15)<<12 // BIC $0xc0000000, Rx
+					}
+					if p.Pc&15 == 12 {
+						p.Pc += 4
+					}
+					size += 4
+					if out != nil {
+						asmout(ctxt, p, o, out[1:])
+					}
+				}
+
+				break
+			} else {
+				// if a load/store instruction takes more than 1 word to implement, then
+				// we need to separate the instruction into two:
+				// 1. explicitly load the address into R11.
+				// 2. load/store from R11.
+				// This won't handle .W/.P, so we should reject such code.
+				if p.Scond&(C_PBIT|C_WBIT) != 0 {
+					ctxt.Diag("unsupported instruction (.P/.W): %v", p)
+				}
+				q := ctxt.NewProg()
+				*q = *p
+				var a2 *obj.Addr
+				if p.To.Type == obj.TYPE_MEM {
+					a2 = &q.To
+				} else {
+					a2 = &q.From
+				}
+				nocache(q)
+				nocache(p)
+
+				// insert q after p
+				q.Link = p.Link
+
+				p.Link = q
+				q.Pcond = nil
+
+				// make p into MOVW $X(R), R11
+				p.As = AMOVW
+
+				p.From = *a
+				p.From.Type = obj.TYPE_ADDR
+				p.To = obj.Addr{}
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REG_R11
+
+				// make q into p but load/store from 0(R11)
+				*a2 = obj.Addr{}
+
+				a2.Type = obj.TYPE_MEM
+				a2.Reg = REG_R11
+				a2.Sym = nil
+				a2.Offset = 0
+				size = int(oplook(ctxt, p).size)
+				break
+			}
+		} else if out != nil {
+			asmout(ctxt, p, o, out)
+		}
+	}
+
+	// destination register specific
+	if p.To.Type == obj.TYPE_REG {
+		switch p.To.Reg {
+		case REG_R9:
+			ctxt.Diag("invalid instruction, cannot write to R9: %v", p)
+
+		case REG_R13:
+			if out != nil {
+				out[size/4] = 0xe3cdd103 // BIC $0xc0000000, R13
+			}
+			if (p.Pc+int64(size))&15 == 0 {
+				p.Pc += 4
+			}
+			size += 4
+		}
+	}
+
+	return size
+}
+
+func span5(ctxt *obj.Link, cursym *obj.LSym) {
+	var p *obj.Prog
+	var op *obj.Prog
+
+	p = cursym.Text
+	if p == nil || p.Link == nil { // handle external functions and ELF section symbols
+		return
+	}
+
+	if oprange[AAND&obj.AMask] == nil {
+		buildop(ctxt)
+	}
+
+	ctxt.Cursym = cursym
+
+	ctxt.Autosize = int32(p.To.Offset + 4)
+	c := int32(0)
+
+	op = p
+	p = p.Link
+	var i int
+	var m int
+	var o *Optab
+	for ; p != nil || ctxt.Blitrl != nil; op, p = p, p.Link {
+		if p == nil {
+			if checkpool(ctxt, op, 0) {
+				p = op
+				continue
+			}
+
+			// can't happen: blitrl is not nil, but checkpool didn't flushpool
+			ctxt.Diag("internal inconsistency")
+
+			break
+		}
+
+		ctxt.Curp = p
+		p.Pc = int64(c)
+		o = oplook(ctxt, p)
+		if ctxt.Headtype != obj.Hnacl {
+			m = int(o.size)
+		} else {
+			m = asmoutnacl(ctxt, c, p, o, nil)
+			c = int32(p.Pc)     // asmoutnacl might change pc for alignment
+			o = oplook(ctxt, p) // asmoutnacl might change p in rare cases
+		}
+
+		if m%4 != 0 || p.Pc%4 != 0 {
+			ctxt.Diag("!pc invalid: %v size=%d", p, m)
+		}
+
+		// must check literal pool here in case p generates many instructions
+		if ctxt.Blitrl != nil {
+			i = m
+			if checkpool(ctxt, op, i) {
+				p = op
+				continue
+			}
+		}
+
+		if m == 0 && (p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != ADATABUNDLEEND && p.As != obj.ANOP && p.As != obj.AUSEFIELD) {
+			ctxt.Diag("zero-width instruction\n%v", p)
+			continue
+		}
+
+		switch o.flag & (LFROM | LTO | LPOOL) {
+		case LFROM:
+			addpool(ctxt, p, &p.From)
+
+		case LTO:
+			addpool(ctxt, p, &p.To)
+
+		case LPOOL:
+			if p.Scond&C_SCOND == C_SCOND_NONE {
+				flushpool(ctxt, p, 0, 0)
+			}
+		}
+
+		if p.As == AMOVW && p.To.Type == obj.TYPE_REG && p.To.Reg == REGPC && p.Scond&C_SCOND == C_SCOND_NONE {
+			flushpool(ctxt, p, 0, 0)
+		}
+		c += int32(m)
+	}
+
+	cursym.Size = int64(c)
+
+	/*
+	 * if any procedure is large enough to
+	 * generate a large SBRA branch, then
+	 * generate extra passes putting branches
+	 * around jmps to fix. this is rare.
+	 */
+	times := 0
+
+	var bflag int
+	var opc int32
+	var out [6 + 3]uint32
+	for {
+		if ctxt.Debugvlog != 0 {
+			ctxt.Logf("%5.2f span1\n", obj.Cputime())
+		}
+		bflag = 0
+		c = 0
+		times++
+		cursym.Text.Pc = 0 // force re-layout the code.
+		for p = cursym.Text; p != nil; p = p.Link {
+			ctxt.Curp = p
+			o = oplook(ctxt, p)
+			if int64(c) > p.Pc {
+				p.Pc = int64(c)
+			}
+
+			/* very large branches
+			if(o->type == 6 && p->pcond) {
+				otxt = p->pcond->pc - c;
+				if(otxt < 0)
+					otxt = -otxt;
+				if(otxt >= (1L<<17) - 10) {
+					q = emallocz(sizeof(Prog));
+					q->link = p->link;
+					p->link = q;
+					q->as = AB;
+					q->to.type = TYPE_BRANCH;
+					q->pcond = p->pcond;
+					p->pcond = q;
+					q = emallocz(sizeof(Prog));
+					q->link = p->link;
+					p->link = q;
+					q->as = AB;
+					q->to.type = TYPE_BRANCH;
+					q->pcond = q->link->link;
+					bflag = 1;
+				}
+			}
+			*/
+			opc = int32(p.Pc)
+
+			if ctxt.Headtype != obj.Hnacl {
+				m = int(o.size)
+			} else {
+				m = asmoutnacl(ctxt, c, p, o, nil)
+			}
+			if p.Pc != int64(opc) {
+				bflag = 1
+			}
+
+			//print("%v pc changed %d to %d in iter. %d\n", p, opc, (int32)p->pc, times);
+			c = int32(p.Pc + int64(m))
+
+			if m%4 != 0 || p.Pc%4 != 0 {
+				ctxt.Diag("pc invalid: %v size=%d", p, m)
+			}
+
+			if m/4 > len(out) {
+				ctxt.Diag("instruction size too large: %d > %d", m/4, len(out))
+			}
+			if m == 0 && (p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != ADATABUNDLEEND && p.As != obj.ANOP && p.As != obj.AUSEFIELD) {
+				if p.As == obj.ATEXT {
+					ctxt.Autosize = int32(p.To.Offset + 4)
+					continue
+				}
+
+				ctxt.Diag("zero-width instruction\n%v", p)
+				continue
+			}
+		}
+
+		cursym.Size = int64(c)
+		if bflag == 0 {
+			break
+		}
+	}
+
+	if c%4 != 0 {
+		ctxt.Diag("sym->size=%d, invalid", c)
+	}
+
+	/*
+	 * lay out the code.  all the pc-relative code references,
+	 * even cross-function, are resolved now;
+	 * only data references need to be relocated.
+	 * with more work we could leave cross-function
+	 * code references to be relocated too, and then
+	 * perhaps we'd be able to parallelize the span loop above.
+	 */
+
+	p = cursym.Text
+	ctxt.Autosize = int32(p.To.Offset + 4)
+	cursym.Grow(cursym.Size)
+
+	bp := cursym.P
+	c = int32(p.Pc) // even p->link might need extra padding
+	var v int
+	for p = p.Link; p != nil; p = p.Link {
+		ctxt.Pc = p.Pc
+		ctxt.Curp = p
+		o = oplook(ctxt, p)
+		opc = int32(p.Pc)
+		if ctxt.Headtype != obj.Hnacl {
+			asmout(ctxt, p, o, out[:])
+			m = int(o.size)
+		} else {
+			m = asmoutnacl(ctxt, c, p, o, out[:])
+			if int64(opc) != p.Pc {
+				ctxt.Diag("asmoutnacl broken: pc changed (%d->%d) in last stage: %v", opc, int32(p.Pc), p)
+			}
+		}
+
+		if m%4 != 0 || p.Pc%4 != 0 {
+			ctxt.Diag("final stage: pc invalid: %v size=%d", p, m)
+		}
+
+		if int64(c) > p.Pc {
+			ctxt.Diag("PC padding invalid: want %#d, has %#d: %v", p.Pc, c, p)
+		}
+		for int64(c) != p.Pc {
+			// emit 0xe1a00000 (MOVW R0, R0)
+			bp[0] = 0x00
+			bp = bp[1:]
+
+			bp[0] = 0x00
+			bp = bp[1:]
+			bp[0] = 0xa0
+			bp = bp[1:]
+			bp[0] = 0xe1
+			bp = bp[1:]
+			c += 4
+		}
+
+		for i = 0; i < m/4; i++ {
+			v = int(out[i])
+			bp[0] = byte(v)
+			bp = bp[1:]
+			bp[0] = byte(v >> 8)
+			bp = bp[1:]
+			bp[0] = byte(v >> 16)
+			bp = bp[1:]
+			bp[0] = byte(v >> 24)
+			bp = bp[1:]
+		}
+
+		c += int32(m)
+	}
+}
+
+/*
+ * when the first reference to the literal pool threatens
+ * to go out of range of a 12-bit PC-relative offset,
+ * drop the pool now, and branch round it.
+ * this happens only in extended basic blocks that exceed 4k.
+ */
+func checkpool(ctxt *obj.Link, p *obj.Prog, sz int) bool {
+	if pool.size >= 0xff0 || immaddr(int32((p.Pc+int64(sz)+4)+4+int64(12+pool.size)-int64(pool.start+8))) == 0 {
+		return flushpool(ctxt, p, 1, 0)
+	} else if p.Link == nil {
+		return flushpool(ctxt, p, 2, 0)
+	}
+	return false
+}
+
+func flushpool(ctxt *obj.Link, p *obj.Prog, skip int, force int) bool {
+	if ctxt.Blitrl != nil {
+		if skip != 0 {
+			if false && skip == 1 {
+				fmt.Printf("note: flush literal pool at %x: len=%d ref=%x\n", uint64(p.Pc+4), pool.size, pool.start)
+			}
+			q := ctxt.NewProg()
+			q.As = AB
+			q.To.Type = obj.TYPE_BRANCH
+			q.Pcond = p.Link
+			q.Link = ctxt.Blitrl
+			q.Lineno = p.Lineno
+			ctxt.Blitrl = q
+		} else if force == 0 && (p.Pc+int64(12+pool.size)-int64(pool.start) < 2048) { // 12 take into account the maximum nacl literal pool alignment padding size
+			return false
+		}
+		if ctxt.Headtype == obj.Hnacl && pool.size%16 != 0 {
+			// if pool is not multiple of 16 bytes, add an alignment marker
+			q := ctxt.NewProg()
+
+			q.As = ADATABUNDLEEND
+			ctxt.Elitrl.Link = q
+			ctxt.Elitrl = q
+		}
+
+		// The line number for constant pool entries doesn't really matter.
+		// We set it to the line number of the preceding instruction so that
+		// there are no deltas to encode in the pc-line tables.
+		for q := ctxt.Blitrl; q != nil; q = q.Link {
+			q.Lineno = p.Lineno
+		}
+
+		ctxt.Elitrl.Link = p.Link
+		p.Link = ctxt.Blitrl
+
+		ctxt.Blitrl = nil /* BUG: should refer back to values until out-of-range */
+		ctxt.Elitrl = nil
+		pool.size = 0
+		pool.start = 0
+		pool.extra = 0
+		return true
+	}
+
+	return false
+}
+
+func addpool(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) {
+	var t obj.Prog
+
+	c := aclass(ctxt, a)
+
+	t.Ctxt = ctxt
+	t.As = AWORD
+
+	switch c {
+	default:
+		t.To.Offset = a.Offset
+		t.To.Sym = a.Sym
+		t.To.Type = a.Type
+		t.To.Name = a.Name
+
+		if ctxt.Flag_shared && t.To.Sym != nil {
+			t.Rel = p
+		}
+
+	case C_SROREG,
+		C_LOREG,
+		C_ROREG,
+		C_FOREG,
+		C_SOREG,
+		C_HOREG,
+		C_FAUTO,
+		C_SAUTO,
+		C_LAUTO,
+		C_LACON:
+		t.To.Type = obj.TYPE_CONST
+		t.To.Offset = ctxt.Instoffset
+	}
+
+	if t.Rel == nil {
+		for q := ctxt.Blitrl; q != nil; q = q.Link { /* could hash on t.t0.offset */
+			if q.Rel == nil && q.To == t.To {
+				p.Pcond = q
+				return
+			}
+		}
+	}
+
+	if ctxt.Headtype == obj.Hnacl && pool.size%16 == 0 {
+		// start a new data bundle
+		q := ctxt.NewProg()
+		q.As = ADATABUNDLE
+		q.Pc = int64(pool.size)
+		pool.size += 4
+		if ctxt.Blitrl == nil {
+			ctxt.Blitrl = q
+			pool.start = uint32(p.Pc)
+		} else {
+			ctxt.Elitrl.Link = q
+		}
+
+		ctxt.Elitrl = q
+	}
+
+	q := ctxt.NewProg()
+	*q = t
+	q.Pc = int64(pool.size)
+
+	if ctxt.Blitrl == nil {
+		ctxt.Blitrl = q
+		pool.start = uint32(p.Pc)
+	} else {
+		ctxt.Elitrl.Link = q
+	}
+	ctxt.Elitrl = q
+	pool.size += 4
+
+	p.Pcond = q
+}
+
+func regoff(ctxt *obj.Link, a *obj.Addr) int32 {
+	ctxt.Instoffset = 0
+	aclass(ctxt, a)
+	return int32(ctxt.Instoffset)
+}
+
+func immrot(v uint32) int32 {
+	for i := 0; i < 16; i++ {
+		if v&^0xff == 0 {
+			return int32(uint32(int32(i)<<8) | v | 1<<25)
+		}
+		v = v<<2 | v>>30
+	}
+
+	return 0
+}
+
+func immaddr(v int32) int32 {
+	if v >= 0 && v <= 0xfff {
+		return v&0xfff | 1<<24 | 1<<23 /* pre indexing */ /* pre indexing, up */
+	}
+	if v >= -0xfff && v < 0 {
+		return -v&0xfff | 1<<24 /* pre indexing */
+	}
+	return 0
+}
+
+func immfloat(v int32) bool {
+	return v&0xC03 == 0 /* offset will fit in floating-point load/store */
+}
+
+func immhalf(v int32) bool {
+	if v >= 0 && v <= 0xff {
+		return v|1<<24|1<<23 != 0 /* pre indexing */ /* pre indexing, up */
+	}
+	if v >= -0xff && v < 0 {
+		return -v&0xff|1<<24 != 0 /* pre indexing */
+	}
+	return false
+}
+
+func aclass(ctxt *obj.Link, a *obj.Addr) int {
+	switch a.Type {
+	case obj.TYPE_NONE:
+		return C_NONE
+
+	case obj.TYPE_REG:
+		ctxt.Instoffset = 0
+		if REG_R0 <= a.Reg && a.Reg <= REG_R15 {
+			return C_REG
+		}
+		if REG_F0 <= a.Reg && a.Reg <= REG_F15 {
+			return C_FREG
+		}
+		if a.Reg == REG_FPSR || a.Reg == REG_FPCR {
+			return C_FCR
+		}
+		if a.Reg == REG_CPSR || a.Reg == REG_SPSR {
+			return C_PSR
+		}
+		return C_GOK
+
+	case obj.TYPE_REGREG:
+		return C_REGREG
+
+	case obj.TYPE_REGREG2:
+		return C_REGREG2
+
+	case obj.TYPE_REGLIST:
+		return C_REGLIST
+
+	case obj.TYPE_SHIFT:
+		return C_SHIFT
+
+	case obj.TYPE_MEM:
+		switch a.Name {
+		case obj.NAME_EXTERN,
+			obj.NAME_GOTREF,
+			obj.NAME_STATIC:
+			if a.Sym == nil || a.Sym.Name == "" {
+				fmt.Printf("null sym external\n")
+				return C_GOK
+			}
+
+			ctxt.Instoffset = 0 // s.b. unused but just in case
+			if a.Sym.Type == obj.STLSBSS {
+				if ctxt.Flag_shared {
+					return C_TLS_IE
+				} else {
+					return C_TLS_LE
+				}
+			}
+
+			return C_ADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if t := immaddr(int32(ctxt.Instoffset)); t != 0 {
+				if immhalf(int32(ctxt.Instoffset)) {
+					if immfloat(t) {
+						return C_HFAUTO
+					}
+					return C_HAUTO
+				}
+
+				if immfloat(t) {
+					return C_FAUTO
+				}
+				return C_SAUTO
+			}
+
+			return C_LAUTO
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 4
+			if t := immaddr(int32(ctxt.Instoffset)); t != 0 {
+				if immhalf(int32(ctxt.Instoffset)) {
+					if immfloat(t) {
+						return C_HFAUTO
+					}
+					return C_HAUTO
+				}
+
+				if immfloat(t) {
+					return C_FAUTO
+				}
+				return C_SAUTO
+			}
+
+			return C_LAUTO
+
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if t := immaddr(int32(ctxt.Instoffset)); t != 0 {
+				if immhalf(int32(ctxt.Instoffset)) { /* n.b. that it will also satisfy immrot */
+					if immfloat(t) {
+						return C_HFOREG
+					}
+					return C_HOREG
+				}
+
+				if immfloat(t) {
+					return C_FOREG /* n.b. that it will also satisfy immrot */
+				}
+				if immrot(uint32(ctxt.Instoffset)) != 0 {
+					return C_SROREG
+				}
+				if immhalf(int32(ctxt.Instoffset)) {
+					return C_HOREG
+				}
+				return C_SOREG
+			}
+
+			if immrot(uint32(ctxt.Instoffset)) != 0 {
+				return C_ROREG
+			}
+			return C_LOREG
+		}
+
+		return C_GOK
+
+	case obj.TYPE_FCONST:
+		if chipzero5(ctxt, a.Val.(float64)) >= 0 {
+			return C_ZFCON
+		}
+		if chipfloat5(ctxt, a.Val.(float64)) >= 0 {
+			return C_SFCON
+		}
+		return C_LFCON
+
+	case obj.TYPE_TEXTSIZE:
+		return C_TEXTSIZE
+
+	case obj.TYPE_CONST,
+		obj.TYPE_ADDR:
+		switch a.Name {
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if a.Reg != 0 {
+				return aconsize(ctxt)
+			}
+
+			if immrot(uint32(ctxt.Instoffset)) != 0 {
+				return C_RCON
+			}
+			if immrot(^uint32(ctxt.Instoffset)) != 0 {
+				return C_NCON
+			}
+			return C_LCON
+
+		case obj.NAME_EXTERN,
+			obj.NAME_GOTREF,
+			obj.NAME_STATIC:
+			s := a.Sym
+			if s == nil {
+				break
+			}
+			ctxt.Instoffset = 0 // s.b. unused but just in case
+			return C_LCONADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			return aconsize(ctxt)
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 4
+			return aconsize(ctxt)
+		}
+
+		return C_GOK
+
+	case obj.TYPE_BRANCH:
+		return C_SBRA
+	}
+
+	return C_GOK
+}
+
+func aconsize(ctxt *obj.Link) int {
+	if immrot(uint32(ctxt.Instoffset)) != 0 {
+		return C_RACON
+	}
+	if immrot(uint32(-ctxt.Instoffset)) != 0 {
+		return C_RACON
+	}
+	return C_LACON
+}
+
+func prasm(p *obj.Prog) {
+	fmt.Printf("%v\n", p)
+}
+
+func oplook(ctxt *obj.Link, p *obj.Prog) *Optab {
+	a1 := int(p.Optab)
+	if a1 != 0 {
+		return &optab[a1-1]
+	}
+	a1 = int(p.From.Class)
+	if a1 == 0 {
+		a1 = aclass(ctxt, &p.From) + 1
+		p.From.Class = int8(a1)
+	}
+
+	a1--
+	a3 := int(p.To.Class)
+	if a3 == 0 {
+		a3 = aclass(ctxt, &p.To) + 1
+		p.To.Class = int8(a3)
+	}
+
+	a3--
+	a2 := C_NONE
+	if p.Reg != 0 {
+		a2 = C_REG
+	}
+
+	if false { /*debug['O']*/
+		fmt.Printf("oplook %v %v %v %v\n", p.As, DRconv(a1), DRconv(a2), DRconv(a3))
+		fmt.Printf("\t\t%d %d\n", p.From.Type, p.To.Type)
+	}
+
+	ops := oprange[p.As&obj.AMask]
+	c1 := &xcmp[a1]
+	c3 := &xcmp[a3]
+	for i := range ops {
+		op := &ops[i]
+		if int(op.a2) == a2 && c1[op.a1] && c3[op.a3] {
+			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
+			return op
+		}
+	}
+
+	ctxt.Diag("illegal combination %v; %v %v %v, %d %d", p, DRconv(a1), DRconv(a2), DRconv(a3), p.From.Type, p.To.Type)
+	ctxt.Diag("from %d %d to %d %d\n", p.From.Type, p.From.Name, p.To.Type, p.To.Name)
+	prasm(p)
+	if ops == nil {
+		ops = optab
+	}
+	return &ops[0]
+}
+
+func cmp(a int, b int) bool {
+	if a == b {
+		return true
+	}
+	switch a {
+	case C_LCON:
+		if b == C_RCON || b == C_NCON {
+			return true
+		}
+
+	case C_LACON:
+		if b == C_RACON {
+			return true
+		}
+
+	case C_LFCON:
+		if b == C_ZFCON || b == C_SFCON {
+			return true
+		}
+
+	case C_HFAUTO:
+		return b == C_HAUTO || b == C_FAUTO
+
+	case C_FAUTO, C_HAUTO:
+		return b == C_HFAUTO
+
+	case C_SAUTO:
+		return cmp(C_HFAUTO, b)
+
+	case C_LAUTO:
+		return cmp(C_SAUTO, b)
+
+	case C_HFOREG:
+		return b == C_HOREG || b == C_FOREG
+
+	case C_FOREG, C_HOREG:
+		return b == C_HFOREG
+
+	case C_SROREG:
+		return cmp(C_SOREG, b) || cmp(C_ROREG, b)
+
+	case C_SOREG, C_ROREG:
+		return b == C_SROREG || cmp(C_HFOREG, b)
+
+	case C_LOREG:
+		return cmp(C_SROREG, b)
+
+	case C_LBRA:
+		if b == C_SBRA {
+			return true
+		}
+
+	case C_HREG:
+		return cmp(C_SP, b) || cmp(C_PC, b)
+	}
+
+	return false
+}
+
+type ocmp []Optab
+
+func (x ocmp) Len() int {
+	return len(x)
+}
+
+func (x ocmp) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}
+
+func (x ocmp) Less(i, j int) bool {
+	p1 := &x[i]
+	p2 := &x[j]
+	n := int(p1.as) - int(p2.as)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a1) - int(p2.a1)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a2) - int(p2.a2)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a3) - int(p2.a3)
+	if n != 0 {
+		return n < 0
+	}
+	return false
+}
+
+func opset(a, b0 obj.As) {
+	oprange[a&obj.AMask] = oprange[b0]
+}
+
+func buildop(ctxt *obj.Link) {
+	var n int
+
+	for i := 0; i < C_GOK; i++ {
+		for n = 0; n < C_GOK; n++ {
+			if cmp(n, i) {
+				xcmp[i][n] = true
+			}
+		}
+	}
+	for n = 0; optab[n].as != obj.AXXX; n++ {
+		if optab[n].flag&LPCREL != 0 {
+			if ctxt.Flag_shared {
+				optab[n].size += int8(optab[n].pcrelsiz)
+			} else {
+				optab[n].flag &^= LPCREL
+			}
+		}
+	}
+
+	sort.Sort(ocmp(optab[:n]))
+	for i := 0; i < n; i++ {
+		r := optab[i].as
+		r0 := r & obj.AMask
+		start := i
+		for optab[i].as == r {
+			i++
+		}
+		oprange[r0] = optab[start:i]
+		i--
+
+		switch r {
+		default:
+			ctxt.Diag("unknown op in build: %v", r)
+			log.Fatalf("bad code")
+
+		case AADD:
+			opset(AAND, r0)
+			opset(AEOR, r0)
+			opset(ASUB, r0)
+			opset(ARSB, r0)
+			opset(AADC, r0)
+			opset(ASBC, r0)
+			opset(ARSC, r0)
+			opset(AORR, r0)
+			opset(ABIC, r0)
+
+		case ACMP:
+			opset(ATEQ, r0)
+			opset(ACMN, r0)
+
+		case AMVN:
+			break
+
+		case ABEQ:
+			opset(ABNE, r0)
+			opset(ABCS, r0)
+			opset(ABHS, r0)
+			opset(ABCC, r0)
+			opset(ABLO, r0)
+			opset(ABMI, r0)
+			opset(ABPL, r0)
+			opset(ABVS, r0)
+			opset(ABVC, r0)
+			opset(ABHI, r0)
+			opset(ABLS, r0)
+			opset(ABGE, r0)
+			opset(ABLT, r0)
+			opset(ABGT, r0)
+			opset(ABLE, r0)
+
+		case ASLL:
+			opset(ASRL, r0)
+			opset(ASRA, r0)
+
+		case AMUL:
+			opset(AMULU, r0)
+
+		case ADIV:
+			opset(AMOD, r0)
+			opset(AMODU, r0)
+			opset(ADIVU, r0)
+
+		case AMOVW,
+			AMOVB,
+			AMOVBS,
+			AMOVBU,
+			AMOVH,
+			AMOVHS,
+			AMOVHU:
+			break
+
+		case ASWPW:
+			opset(ASWPBU, r0)
+
+		case AB,
+			ABL,
+			ABX,
+			ABXRET,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY,
+			ASWI,
+			AWORD,
+			AMOVM,
+			ARFE,
+			obj.ATEXT,
+			obj.AUSEFIELD,
+			obj.ATYPE:
+			break
+
+		case AADDF:
+			opset(AADDD, r0)
+			opset(ASUBF, r0)
+			opset(ASUBD, r0)
+			opset(AMULF, r0)
+			opset(AMULD, r0)
+			opset(ADIVF, r0)
+			opset(ADIVD, r0)
+			opset(ASQRTF, r0)
+			opset(ASQRTD, r0)
+			opset(AMOVFD, r0)
+			opset(AMOVDF, r0)
+			opset(AABSF, r0)
+			opset(AABSD, r0)
+			opset(ANEGF, r0)
+			opset(ANEGD, r0)
+
+		case ACMPF:
+			opset(ACMPD, r0)
+
+		case AMOVF:
+			opset(AMOVD, r0)
+
+		case AMOVFW:
+			opset(AMOVDW, r0)
+
+		case AMOVWF:
+			opset(AMOVWD, r0)
+
+		case AMULL:
+			opset(AMULAL, r0)
+			opset(AMULLU, r0)
+			opset(AMULALU, r0)
+
+		case AMULWT:
+			opset(AMULWB, r0)
+
+		case AMULAWT:
+			opset(AMULAWB, r0)
+
+		case AMULA,
+			ALDREX,
+			ASTREX,
+			ALDREXD,
+			ASTREXD,
+			ATST,
+			APLD,
+			obj.AUNDEF,
+			ACLZ,
+			obj.AFUNCDATA,
+			obj.APCDATA,
+			obj.ANOP,
+			ADATABUNDLE,
+			ADATABUNDLEEND:
+			break
+		}
+	}
+}
+
+func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
+	ctxt.Printp = p
+	o1 := uint32(0)
+	o2 := uint32(0)
+	o3 := uint32(0)
+	o4 := uint32(0)
+	o5 := uint32(0)
+	o6 := uint32(0)
+	ctxt.Armsize += int32(o.size)
+	if false { /*debug['P']*/
+		fmt.Printf("%x: %v\ttype %d\n", uint32(p.Pc), p, o.type_)
+	}
+	switch o.type_ {
+	default:
+		ctxt.Diag("unknown asm %d", o.type_)
+		prasm(p)
+
+	case 0: /* pseudo ops */
+		if false { /*debug['G']*/
+			fmt.Printf("%x: %s: arm\n", uint32(p.Pc), p.From.Sym.Name)
+		}
+
+	case 1: /* op R,[R],R */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = 0
+		}
+		if p.As == AMOVB || p.As == AMOVH || p.As == AMOVW || p.As == AMVN {
+			r = 0
+		} else if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(rf)&15)<<0 | (uint32(r)&15)<<16 | (uint32(rt)&15)<<12
+
+	case 2: /* movbu $I,[R],R */
+		aclass(ctxt, &p.From)
+
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+		o1 |= uint32(immrot(uint32(ctxt.Instoffset)))
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = 0
+		}
+		if p.As == AMOVW || p.As == AMVN {
+			r = 0
+		} else if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(r)&15)<<16 | (uint32(rt)&15)<<12
+
+	case 3: /* add R<<[IR],[R],R */
+		o1 = mov(ctxt, p)
+
+	case 4: /* MOVW $off(R), R -> add $off,[R],R */
+		aclass(ctxt, &p.From)
+		if ctxt.Instoffset < 0 {
+			o1 = oprrr(ctxt, ASUB, int(p.Scond))
+			o1 |= uint32(immrot(uint32(-ctxt.Instoffset)))
+		} else {
+			o1 = oprrr(ctxt, AADD, int(p.Scond))
+			o1 |= uint32(immrot(uint32(ctxt.Instoffset)))
+		}
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 |= (uint32(r) & 15) << 16
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 5: /* bra s */
+		o1 = opbra(ctxt, p, p.As, int(p.Scond))
+
+		v := int32(-8)
+		if p.To.Sym != nil {
+			rel := obj.Addrel(ctxt.Cursym)
+			rel.Off = int32(ctxt.Pc)
+			rel.Siz = 4
+			rel.Sym = p.To.Sym
+			v += int32(p.To.Offset)
+			rel.Add = int64(o1) | (int64(v)>>2)&0xffffff
+			rel.Type = obj.R_CALLARM
+			break
+		}
+
+		if p.Pcond != nil {
+			v = int32((p.Pcond.Pc - ctxt.Pc) - 8)
+		}
+		o1 |= (uint32(v) >> 2) & 0xffffff
+
+	case 6: /* b ,O(R) -> add $O,R,PC */
+		aclass(ctxt, &p.To)
+
+		o1 = oprrr(ctxt, AADD, int(p.Scond))
+		o1 |= uint32(immrot(uint32(ctxt.Instoffset)))
+		o1 |= (uint32(p.To.Reg) & 15) << 16
+		o1 |= (REGPC & 15) << 12
+
+	case 7: /* bl (R) -> blx R */
+		aclass(ctxt, &p.To)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("%v: doesn't support BL offset(REG) with non-zero offset %d", p, ctxt.Instoffset)
+		}
+		o1 = oprrr(ctxt, ABL, int(p.Scond))
+		o1 |= (uint32(p.To.Reg) & 15) << 0
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 0
+		rel.Type = obj.R_CALLIND
+
+	case 8: /* sll $c,[R],R -> mov (R<<$c),R */
+		aclass(ctxt, &p.From)
+
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 |= (uint32(r) & 15) << 0
+		o1 |= uint32((ctxt.Instoffset & 31) << 7)
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 9: /* sll R,[R],R -> mov (R<<R),R */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 |= (uint32(r) & 15) << 0
+		o1 |= (uint32(p.From.Reg)&15)<<8 | 1<<4
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 10: /* swi [$con] */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		if p.To.Type != obj.TYPE_NONE {
+			aclass(ctxt, &p.To)
+			o1 |= uint32(ctxt.Instoffset & 0xffffff)
+		}
+
+	case 11: /* word */
+		aclass(ctxt, &p.To)
+
+		o1 = uint32(ctxt.Instoffset)
+		if p.To.Sym != nil {
+			// This case happens with words generated
+			// in the PC stream as part of the literal pool.
+			rel := obj.Addrel(ctxt.Cursym)
+
+			rel.Off = int32(ctxt.Pc)
+			rel.Siz = 4
+			rel.Sym = p.To.Sym
+			rel.Add = p.To.Offset
+
+			if ctxt.Flag_shared {
+				if p.To.Name == obj.NAME_GOTREF {
+					rel.Type = obj.R_GOTPCREL
+				} else {
+					rel.Type = obj.R_PCREL
+				}
+				rel.Add += ctxt.Pc - p.Rel.Pc - 8
+			} else {
+				rel.Type = obj.R_ADDR
+			}
+			o1 = 0
+		}
+
+	case 12: /* movw $lcon, reg */
+		o1 = omvl(ctxt, p, &p.From, int(p.To.Reg))
+
+		if o.flag&LPCREL != 0 {
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | (uint32(p.To.Reg)&15)<<0 | (REGPC&15)<<16 | (uint32(p.To.Reg)&15)<<12
+		}
+
+	case 13: /* op $lcon, [R], R */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = oprrr(ctxt, p.As, int(p.Scond))
+		o2 |= REGTMP & 15
+		r := int(p.Reg)
+		if p.As == AMOVW || p.As == AMVN {
+			r = 0
+		} else if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o2 |= (uint32(r) & 15) << 16
+		if p.To.Type != obj.TYPE_NONE {
+			o2 |= (uint32(p.To.Reg) & 15) << 12
+		}
+
+	case 14: /* movb/movbu/movh/movhu R,R */
+		o1 = oprrr(ctxt, ASLL, int(p.Scond))
+
+		if p.As == AMOVBU || p.As == AMOVHU {
+			o2 = oprrr(ctxt, ASRL, int(p.Scond))
+		} else {
+			o2 = oprrr(ctxt, ASRA, int(p.Scond))
+		}
+
+		r := int(p.To.Reg)
+		o1 |= (uint32(p.From.Reg)&15)<<0 | (uint32(r)&15)<<12
+		o2 |= uint32(r)&15 | (uint32(r)&15)<<12
+		if p.As == AMOVB || p.As == AMOVBS || p.As == AMOVBU {
+			o1 |= 24 << 7
+			o2 |= 24 << 7
+		} else {
+			o1 |= 16 << 7
+			o2 |= 16 << 7
+		}
+
+	case 15: /* mul r,[r,]r */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		if rt == r {
+			r = rf
+			rf = rt
+		}
+
+		if false {
+			if rt == r || rf == REGPC&15 || r == REGPC&15 || rt == REGPC&15 {
+				ctxt.Diag("bad registers in MUL")
+				prasm(p)
+			}
+		}
+
+		o1 |= (uint32(rf)&15)<<8 | (uint32(r)&15)<<0 | (uint32(rt)&15)<<16
+
+	case 16: /* div r,[r,]r */
+		o1 = 0xf << 28
+
+		o2 = 0
+
+	case 17:
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		rt2 := int(p.To.Offset)
+		r := int(p.Reg)
+		o1 |= (uint32(rf)&15)<<8 | (uint32(r)&15)<<0 | (uint32(rt)&15)<<16 | (uint32(rt2)&15)<<12
+
+	case 20: /* mov/movb/movbu R,O(R) */
+		aclass(ctxt, &p.To)
+
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = osr(ctxt, p.As, int(p.From.Reg), int32(ctxt.Instoffset), r, int(p.Scond))
+
+	case 21: /* mov/movbu O(R),R -> lr */
+		aclass(ctxt, &p.From)
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = olr(ctxt, int32(ctxt.Instoffset), r, int(p.To.Reg), int(p.Scond))
+		if p.As != AMOVW {
+			o1 |= 1 << 22
+		}
+
+	case 30: /* mov/movb/movbu R,L(R) */
+		o1 = omvl(ctxt, p, &p.To, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = osrr(ctxt, int(p.From.Reg), REGTMP&15, r, int(p.Scond))
+		if p.As != AMOVW {
+			o2 |= 1 << 22
+		}
+
+	case 31: /* mov/movbu L(R),R -> lr[b] */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = olrr(ctxt, REGTMP&15, r, int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVBU || p.As == AMOVBS || p.As == AMOVB {
+			o2 |= 1 << 22
+		}
+
+	case 34: /* mov $lacon,R */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+
+		o2 = oprrr(ctxt, AADD, int(p.Scond))
+		o2 |= REGTMP & 15
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 |= (uint32(r) & 15) << 16
+		if p.To.Type != obj.TYPE_NONE {
+			o2 |= (uint32(p.To.Reg) & 15) << 12
+		}
+
+	case 35: /* mov PSR,R */
+		o1 = 2<<23 | 0xf<<16 | 0<<0
+
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+		o1 |= (uint32(p.From.Reg) & 1) << 22
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 36: /* mov R,PSR */
+		o1 = 2<<23 | 0x29f<<12 | 0<<4
+
+		if p.Scond&C_FBIT != 0 {
+			o1 ^= 0x010 << 12
+		}
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+		o1 |= (uint32(p.To.Reg) & 1) << 22
+		o1 |= (uint32(p.From.Reg) & 15) << 0
+
+	case 37: /* mov $con,PSR */
+		aclass(ctxt, &p.From)
+
+		o1 = 2<<23 | 0x29f<<12 | 0<<4
+		if p.Scond&C_FBIT != 0 {
+			o1 ^= 0x010 << 12
+		}
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+		o1 |= uint32(immrot(uint32(ctxt.Instoffset)))
+		o1 |= (uint32(p.To.Reg) & 1) << 22
+		o1 |= (uint32(p.From.Reg) & 15) << 0
+
+	case 38, 39:
+		switch o.type_ {
+		case 38: /* movm $con,oreg -> stm */
+			o1 = 0x4 << 25
+
+			o1 |= uint32(p.From.Offset & 0xffff)
+			o1 |= (uint32(p.To.Reg) & 15) << 16
+			aclass(ctxt, &p.To)
+
+		case 39: /* movm oreg,$con -> ldm */
+			o1 = 0x4<<25 | 1<<20
+
+			o1 |= uint32(p.To.Offset & 0xffff)
+			o1 |= (uint32(p.From.Reg) & 15) << 16
+			aclass(ctxt, &p.From)
+		}
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("offset must be zero in MOVM; %v", p)
+		}
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+		if p.Scond&C_PBIT != 0 {
+			o1 |= 1 << 24
+		}
+		if p.Scond&C_UBIT != 0 {
+			o1 |= 1 << 23
+		}
+		if p.Scond&C_SBIT != 0 {
+			o1 |= 1 << 22
+		}
+		if p.Scond&C_WBIT != 0 {
+			o1 |= 1 << 21
+		}
+
+	case 40: /* swp oreg,reg,reg */
+		aclass(ctxt, &p.From)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("offset must be zero in SWP")
+		}
+		o1 = 0x2<<23 | 0x9<<4
+		if p.As != ASWPW {
+			o1 |= 1 << 22
+		}
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		o1 |= (uint32(p.Reg) & 15) << 0
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 41: /* rfe -> movm.s.w.u 0(r13),[r15] */
+		o1 = 0xe8fd8000
+
+	case 50: /* floating point store */
+		v := regoff(ctxt, &p.To)
+
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = ofsr(ctxt, p.As, int(p.From.Reg), v, r, int(p.Scond), p)
+
+	case 51: /* floating point load */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = ofsr(ctxt, p.As, int(p.To.Reg), v, r, int(p.Scond), p) | 1<<20
+
+	case 52: /* floating point store, int32 offset UGLY */
+		o1 = omvl(ctxt, p, &p.To, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = oprrr(ctxt, AADD, int(p.Scond)) | (REGTMP&15)<<12 | (REGTMP&15)<<16 | (uint32(r)&15)<<0
+		o3 = ofsr(ctxt, p.As, int(p.From.Reg), 0, REGTMP, int(p.Scond), p)
+
+	case 53: /* floating point load, int32 offset UGLY */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = oprrr(ctxt, AADD, int(p.Scond)) | (REGTMP&15)<<12 | (REGTMP&15)<<16 | (uint32(r)&15)<<0
+		o3 = ofsr(ctxt, p.As, int(p.To.Reg), 0, (REGTMP&15), int(p.Scond), p) | 1<<20
+
+	case 54: /* floating point arith */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+			if p.As == AMOVF || p.As == AMOVD || p.As == AMOVFD || p.As == AMOVDF || p.As == ASQRTF || p.As == ASQRTD || p.As == AABSF || p.As == AABSD || p.As == ANEGF || p.As == ANEGD {
+				r = 0
+			}
+		}
+
+		o1 |= (uint32(rf)&15)<<0 | (uint32(r)&15)<<16 | (uint32(rt)&15)<<12
+
+	case 56: /* move to FP[CS]R */
+		o1 = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0xe<<24 | 1<<8 | 1<<4
+
+		o1 |= ((uint32(p.To.Reg)&1)+1)<<21 | (uint32(p.From.Reg)&15)<<12
+
+	case 57: /* move from FP[CS]R */
+		o1 = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0xe<<24 | 1<<8 | 1<<4
+
+		o1 |= ((uint32(p.From.Reg)&1)+1)<<21 | (uint32(p.To.Reg)&15)<<12 | 1<<20
+
+	case 58: /* movbu R,R */
+		o1 = oprrr(ctxt, AAND, int(p.Scond))
+
+		o1 |= uint32(immrot(0xff))
+		rt := int(p.To.Reg)
+		r := int(p.From.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = 0
+		}
+		if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(r)&15)<<16 | (uint32(rt)&15)<<12
+
+	case 59: /* movw/bu R<<I(R),R -> ldr indexed */
+		if p.From.Reg == 0 {
+			if p.As != AMOVW {
+				ctxt.Diag("byte MOV from shifter operand")
+			}
+			o1 = mov(ctxt, p)
+			break
+		}
+
+		if p.From.Offset&(1<<4) != 0 {
+			ctxt.Diag("bad shift in LDR")
+		}
+		o1 = olrr(ctxt, int(p.From.Offset), int(p.From.Reg), int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVBU {
+			o1 |= 1 << 22
+		}
+
+	case 60: /* movb R(R),R -> ldrsb indexed */
+		if p.From.Reg == 0 {
+			ctxt.Diag("byte MOV from shifter operand")
+			o1 = mov(ctxt, p)
+			break
+		}
+
+		if p.From.Offset&(^0xf) != 0 {
+			ctxt.Diag("bad shift in LDRSB")
+		}
+		o1 = olhrr(ctxt, int(p.From.Offset), int(p.From.Reg), int(p.To.Reg), int(p.Scond))
+		o1 ^= 1<<5 | 1<<6
+
+	case 61: /* movw/b/bu R,R<<[IR](R) -> str indexed */
+		if p.To.Reg == 0 {
+			ctxt.Diag("MOV to shifter operand")
+		}
+		o1 = osrr(ctxt, int(p.From.Reg), int(p.To.Offset), int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVB || p.As == AMOVBS || p.As == AMOVBU {
+			o1 |= 1 << 22
+		}
+
+		/* reloc ops */
+	case 64: /* mov/movb/movbu R,addr */
+		o1 = omvl(ctxt, p, &p.To, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = osr(ctxt, p.As, int(p.From.Reg), 0, REGTMP, int(p.Scond))
+		if o.flag&LPCREL != 0 {
+			o3 = o2
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | REGTMP&15 | (REGPC&15)<<16 | (REGTMP&15)<<12
+		}
+
+	case 65: /* mov/movbu addr,R */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = olr(ctxt, 0, REGTMP, int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVBU || p.As == AMOVBS || p.As == AMOVB {
+			o2 |= 1 << 22
+		}
+		if o.flag&LPCREL != 0 {
+			o3 = o2
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | REGTMP&15 | (REGPC&15)<<16 | (REGTMP&15)<<12
+		}
+
+	case 101: /* movw tlsvar,R, local exec*/
+		if p.Scond&C_SCOND != C_SCOND_NONE {
+			ctxt.Diag("conditional tls")
+		}
+		o1 = omvl(ctxt, p, &p.From, int(p.To.Reg))
+
+	case 102: /* movw tlsvar,R, initial exec*/
+		if p.Scond&C_SCOND != C_SCOND_NONE {
+			ctxt.Diag("conditional tls")
+		}
+		o1 = omvl(ctxt, p, &p.From, int(p.To.Reg))
+		o2 = olrr(ctxt, int(p.To.Reg)&15, (REGPC & 15), int(p.To.Reg), int(p.Scond))
+
+	case 103: /* word tlsvar, local exec */
+		if p.To.Sym == nil {
+			ctxt.Diag("nil sym in tls %v", p)
+		}
+		if p.To.Offset != 0 {
+			ctxt.Diag("offset against tls var in %v", p)
+		}
+		// This case happens with words generated in the PC stream as part of
+		// the literal pool.
+		rel := obj.Addrel(ctxt.Cursym)
+
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Type = obj.R_TLS_LE
+		o1 = 0
+
+	case 104: /* word tlsvar, initial exec */
+		if p.To.Sym == nil {
+			ctxt.Diag("nil sym in tls %v", p)
+		}
+		if p.To.Offset != 0 {
+			ctxt.Diag("offset against tls var in %v", p)
+		}
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Type = obj.R_TLS_IE
+		rel.Add = ctxt.Pc - p.Rel.Pc - 8 - int64(rel.Siz)
+
+	case 68: /* floating point store -> ADDR */
+		o1 = omvl(ctxt, p, &p.To, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = ofsr(ctxt, p.As, int(p.From.Reg), 0, REGTMP, int(p.Scond), p)
+		if o.flag&LPCREL != 0 {
+			o3 = o2
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | REGTMP&15 | (REGPC&15)<<16 | (REGTMP&15)<<12
+		}
+
+	case 69: /* floating point load <- ADDR */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = ofsr(ctxt, p.As, int(p.To.Reg), 0, (REGTMP&15), int(p.Scond), p) | 1<<20
+		if o.flag&LPCREL != 0 {
+			o3 = o2
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | REGTMP&15 | (REGPC&15)<<16 | (REGTMP&15)<<12
+		}
+
+		/* ArmV4 ops: */
+	case 70: /* movh/movhu R,O(R) -> strh */
+		aclass(ctxt, &p.To)
+
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = oshr(ctxt, int(p.From.Reg), int32(ctxt.Instoffset), r, int(p.Scond))
+
+	case 71: /* movb/movh/movhu O(R),R -> ldrsb/ldrsh/ldrh */
+		aclass(ctxt, &p.From)
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = olhr(ctxt, int32(ctxt.Instoffset), r, int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVB || p.As == AMOVBS {
+			o1 ^= 1<<5 | 1<<6
+		} else if p.As == AMOVH || p.As == AMOVHS {
+			o1 ^= (1 << 6)
+		}
+
+	case 72: /* movh/movhu R,L(R) -> strh */
+		o1 = omvl(ctxt, p, &p.To, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = oshrr(ctxt, int(p.From.Reg), REGTMP&15, r, int(p.Scond))
+
+	case 73: /* movb/movh/movhu L(R),R -> ldrsb/ldrsh/ldrh */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = olhrr(ctxt, REGTMP&15, r, int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVB || p.As == AMOVBS {
+			o2 ^= 1<<5 | 1<<6
+		} else if p.As == AMOVH || p.As == AMOVHS {
+			o2 ^= (1 << 6)
+		}
+
+	case 74: /* bx $I */
+		ctxt.Diag("ABX $I")
+
+	case 75: /* bx O(R) */
+		aclass(ctxt, &p.To)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("non-zero offset in ABX")
+		}
+
+		/*
+			o1 = 	oprrr(ctxt, AADD, p->scond) | immrot(0) | ((REGPC&15)<<16) | ((REGLINK&15)<<12);	// mov PC, LR
+			o2 = (((p->scond&C_SCOND) ^ C_SCOND_XOR)<<28) | (0x12fff<<8) | (1<<4) | ((p->to.reg&15) << 0);		// BX R
+		*/
+		// p->to.reg may be REGLINK
+		o1 = oprrr(ctxt, AADD, int(p.Scond))
+
+		o1 |= uint32(immrot(uint32(ctxt.Instoffset)))
+		o1 |= (uint32(p.To.Reg) & 15) << 16
+		o1 |= (REGTMP & 15) << 12
+		o2 = oprrr(ctxt, AADD, int(p.Scond)) | uint32(immrot(0)) | (REGPC&15)<<16 | (REGLINK&15)<<12 // mov PC, LR
+		o3 = ((uint32(p.Scond)&C_SCOND)^C_SCOND_XOR)<<28 | 0x12fff<<8 | 1<<4 | REGTMP&15             // BX Rtmp
+
+	case 76: /* bx O(R) when returning from fn*/
+		ctxt.Diag("ABXRET")
+
+	case 77: /* ldrex oreg,reg */
+		aclass(ctxt, &p.From)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("offset must be zero in LDREX")
+		}
+		o1 = 0x19<<20 | 0xf9f
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 78: /* strex reg,oreg,reg */
+		aclass(ctxt, &p.From)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("offset must be zero in STREX")
+		}
+		o1 = 0x18<<20 | 0xf90
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		o1 |= (uint32(p.Reg) & 15) << 0
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 80: /* fmov zfcon,freg */
+		if p.As == AMOVD {
+			o1 = 0xeeb00b00 // VMOV imm 64
+			o2 = oprrr(ctxt, ASUBD, int(p.Scond))
+		} else {
+			o1 = 0x0eb00a00 // VMOV imm 32
+			o2 = oprrr(ctxt, ASUBF, int(p.Scond))
+		}
+
+		v := int32(0x70) // 1.0
+		r := (int(p.To.Reg) & 15) << 0
+
+		// movf $1.0, r
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+		o1 |= (uint32(r) & 15) << 12
+		o1 |= (uint32(v) & 0xf) << 0
+		o1 |= (uint32(v) & 0xf0) << 12
+
+		// subf r,r,r
+		o2 |= (uint32(r)&15)<<0 | (uint32(r)&15)<<16 | (uint32(r)&15)<<12
+
+	case 81: /* fmov sfcon,freg */
+		o1 = 0x0eb00a00 // VMOV imm 32
+		if p.As == AMOVD {
+			o1 = 0xeeb00b00 // VMOV imm 64
+		}
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		v := int32(chipfloat5(ctxt, p.From.Val.(float64)))
+		o1 |= (uint32(v) & 0xf) << 0
+		o1 |= (uint32(v) & 0xf0) << 12
+
+	case 82: /* fcmp freg,freg, */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.Reg)&15)<<12 | (uint32(p.From.Reg)&15)<<0
+		o2 = 0x0ef1fa10 // VMRS R15
+		o2 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 83: /* fcmp freg,, */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg)&15)<<12 | 1<<16
+		o2 = 0x0ef1fa10 // VMRS R15
+		o2 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 84: /* movfw freg,freg - truncate float-to-fix */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 0
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 85: /* movwf freg,freg - fix-to-float */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 0
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+		// macro for movfw freg,FTMP; movw FTMP,reg
+	case 86: /* movfw freg,reg - truncate float-to-fix */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 0
+		o1 |= (FREGTMP & 15) << 12
+		o2 = oprrr(ctxt, -AMOVFW, int(p.Scond))
+		o2 |= (FREGTMP & 15) << 16
+		o2 |= (uint32(p.To.Reg) & 15) << 12
+
+		// macro for movw reg,FTMP; movwf FTMP,freg
+	case 87: /* movwf reg,freg - fix-to-float */
+		o1 = oprrr(ctxt, -AMOVWF, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 12
+		o1 |= (FREGTMP & 15) << 16
+		o2 = oprrr(ctxt, p.As, int(p.Scond))
+		o2 |= (FREGTMP & 15) << 0
+		o2 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 88: /* movw reg,freg  */
+		o1 = oprrr(ctxt, -AMOVWF, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 12
+		o1 |= (uint32(p.To.Reg) & 15) << 16
+
+	case 89: /* movw freg,reg  */
+		o1 = oprrr(ctxt, -AMOVFW, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+
+	case 90: /* tst reg  */
+		o1 = oprrr(ctxt, -ACMP, int(p.Scond))
+
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+
+	case 91: /* ldrexd oreg,reg */
+		aclass(ctxt, &p.From)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("offset must be zero in LDREX")
+		}
+		o1 = 0x1b<<20 | 0xf9f
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 92: /* strexd reg,oreg,reg */
+		aclass(ctxt, &p.From)
+
+		if ctxt.Instoffset != 0 {
+			ctxt.Diag("offset must be zero in STREX")
+		}
+		o1 = 0x1a<<20 | 0xf90
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		o1 |= (uint32(p.Reg) & 15) << 0
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= ((uint32(p.Scond) & C_SCOND) ^ C_SCOND_XOR) << 28
+
+	case 93: /* movb/movh/movhu addr,R -> ldrsb/ldrsh/ldrh */
+		o1 = omvl(ctxt, p, &p.From, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = olhr(ctxt, 0, REGTMP, int(p.To.Reg), int(p.Scond))
+		if p.As == AMOVB || p.As == AMOVBS {
+			o2 ^= 1<<5 | 1<<6
+		} else if p.As == AMOVH || p.As == AMOVHS {
+			o2 ^= (1 << 6)
+		}
+		if o.flag&LPCREL != 0 {
+			o3 = o2
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | REGTMP&15 | (REGPC&15)<<16 | (REGTMP&15)<<12
+		}
+
+	case 94: /* movh/movhu R,addr -> strh */
+		o1 = omvl(ctxt, p, &p.To, REGTMP)
+
+		if o1 == 0 {
+			break
+		}
+		o2 = oshr(ctxt, int(p.From.Reg), 0, REGTMP, int(p.Scond))
+		if o.flag&LPCREL != 0 {
+			o3 = o2
+			o2 = oprrr(ctxt, AADD, int(p.Scond)) | REGTMP&15 | (REGPC&15)<<16 | (REGTMP&15)<<12
+		}
+
+	case 95: /* PLD off(reg) */
+		o1 = 0xf5d0f000
+
+		o1 |= (uint32(p.From.Reg) & 15) << 16
+		if p.From.Offset < 0 {
+			o1 &^= (1 << 23)
+			o1 |= uint32((-p.From.Offset) & 0xfff)
+		} else {
+			o1 |= uint32(p.From.Offset & 0xfff)
+		}
+
+	// This is supposed to be something that stops execution.
+	// It's not supposed to be reached, ever, but if it is, we'd
+	// like to be able to tell how we got there. Assemble as
+	// 0xf7fabcfd which is guaranteed to raise undefined instruction
+	// exception.
+	case 96: /* UNDEF */
+		o1 = 0xf7fabcfd
+
+	case 97: /* CLZ Rm, Rd */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= (uint32(p.From.Reg) & 15) << 0
+
+	case 98: /* MULW{T,B} Rs, Rm, Rd */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.To.Reg) & 15) << 16
+		o1 |= (uint32(p.From.Reg) & 15) << 8
+		o1 |= (uint32(p.Reg) & 15) << 0
+
+	case 99: /* MULAW{T,B} Rs, Rm, Rn, Rd */
+		o1 = oprrr(ctxt, p.As, int(p.Scond))
+
+		o1 |= (uint32(p.To.Reg) & 15) << 12
+		o1 |= (uint32(p.From.Reg) & 15) << 8
+		o1 |= (uint32(p.Reg) & 15) << 0
+		o1 |= uint32((p.To.Offset & 15) << 16)
+
+	// DATABUNDLE: BKPT $0x5be0, signify the start of NaCl data bundle;
+	// DATABUNDLEEND: zero width alignment marker
+	case 100:
+		if p.As == ADATABUNDLE {
+			o1 = 0xe125be70
+		}
+	}
+
+	out[0] = o1
+	out[1] = o2
+	out[2] = o3
+	out[3] = o4
+	out[4] = o5
+	out[5] = o6
+	return
+}
+
+func mov(ctxt *obj.Link, p *obj.Prog) uint32 {
+	aclass(ctxt, &p.From)
+	o1 := oprrr(ctxt, p.As, int(p.Scond))
+	o1 |= uint32(p.From.Offset)
+	rt := int(p.To.Reg)
+	if p.To.Type == obj.TYPE_NONE {
+		rt = 0
+	}
+	r := int(p.Reg)
+	if p.As == AMOVW || p.As == AMVN {
+		r = 0
+	} else if r == 0 {
+		r = rt
+	}
+	o1 |= (uint32(r)&15)<<16 | (uint32(rt)&15)<<12
+	return o1
+}
+
+func oprrr(ctxt *obj.Link, a obj.As, sc int) uint32 {
+	o := ((uint32(sc) & C_SCOND) ^ C_SCOND_XOR) << 28
+	if sc&C_SBIT != 0 {
+		o |= 1 << 20
+	}
+	if sc&(C_PBIT|C_WBIT) != 0 {
+		ctxt.Diag(".nil/.W on dp instruction")
+	}
+	switch a {
+	case AMULU, AMUL:
+		return o | 0x0<<21 | 0x9<<4
+	case AMULA:
+		return o | 0x1<<21 | 0x9<<4
+	case AMULLU:
+		return o | 0x4<<21 | 0x9<<4
+	case AMULL:
+		return o | 0x6<<21 | 0x9<<4
+	case AMULALU:
+		return o | 0x5<<21 | 0x9<<4
+	case AMULAL:
+		return o | 0x7<<21 | 0x9<<4
+	case AAND:
+		return o | 0x0<<21
+	case AEOR:
+		return o | 0x1<<21
+	case ASUB:
+		return o | 0x2<<21
+	case ARSB:
+		return o | 0x3<<21
+	case AADD:
+		return o | 0x4<<21
+	case AADC:
+		return o | 0x5<<21
+	case ASBC:
+		return o | 0x6<<21
+	case ARSC:
+		return o | 0x7<<21
+	case ATST:
+		return o | 0x8<<21 | 1<<20
+	case ATEQ:
+		return o | 0x9<<21 | 1<<20
+	case ACMP:
+		return o | 0xa<<21 | 1<<20
+	case ACMN:
+		return o | 0xb<<21 | 1<<20
+	case AORR:
+		return o | 0xc<<21
+
+	case AMOVB, AMOVH, AMOVW:
+		return o | 0xd<<21
+	case ABIC:
+		return o | 0xe<<21
+	case AMVN:
+		return o | 0xf<<21
+	case ASLL:
+		return o | 0xd<<21 | 0<<5
+	case ASRL:
+		return o | 0xd<<21 | 1<<5
+	case ASRA:
+		return o | 0xd<<21 | 2<<5
+	case ASWI:
+		return o | 0xf<<24
+
+	case AADDD:
+		return o | 0xe<<24 | 0x3<<20 | 0xb<<8 | 0<<4
+	case AADDF:
+		return o | 0xe<<24 | 0x3<<20 | 0xa<<8 | 0<<4
+	case ASUBD:
+		return o | 0xe<<24 | 0x3<<20 | 0xb<<8 | 4<<4
+	case ASUBF:
+		return o | 0xe<<24 | 0x3<<20 | 0xa<<8 | 4<<4
+	case AMULD:
+		return o | 0xe<<24 | 0x2<<20 | 0xb<<8 | 0<<4
+	case AMULF:
+		return o | 0xe<<24 | 0x2<<20 | 0xa<<8 | 0<<4
+	case ADIVD:
+		return o | 0xe<<24 | 0x8<<20 | 0xb<<8 | 0<<4
+	case ADIVF:
+		return o | 0xe<<24 | 0x8<<20 | 0xa<<8 | 0<<4
+	case ASQRTD:
+		return o | 0xe<<24 | 0xb<<20 | 1<<16 | 0xb<<8 | 0xc<<4
+	case ASQRTF:
+		return o | 0xe<<24 | 0xb<<20 | 1<<16 | 0xa<<8 | 0xc<<4
+	case AABSD:
+		return o | 0xe<<24 | 0xb<<20 | 0<<16 | 0xb<<8 | 0xc<<4
+	case AABSF:
+		return o | 0xe<<24 | 0xb<<20 | 0<<16 | 0xa<<8 | 0xc<<4
+	case ANEGD:
+		return o | 0xe<<24 | 0xb<<20 | 1<<16 | 0xb<<8 | 0x4<<4
+	case ANEGF:
+		return o | 0xe<<24 | 0xb<<20 | 1<<16 | 0xa<<8 | 0x4<<4
+	case ACMPD:
+		return o | 0xe<<24 | 0xb<<20 | 4<<16 | 0xb<<8 | 0xc<<4
+	case ACMPF:
+		return o | 0xe<<24 | 0xb<<20 | 4<<16 | 0xa<<8 | 0xc<<4
+
+	case AMOVF:
+		return o | 0xe<<24 | 0xb<<20 | 0<<16 | 0xa<<8 | 4<<4
+	case AMOVD:
+		return o | 0xe<<24 | 0xb<<20 | 0<<16 | 0xb<<8 | 4<<4
+
+	case AMOVDF:
+		return o | 0xe<<24 | 0xb<<20 | 7<<16 | 0xa<<8 | 0xc<<4 | 1<<8 // dtof
+	case AMOVFD:
+		return o | 0xe<<24 | 0xb<<20 | 7<<16 | 0xa<<8 | 0xc<<4 | 0<<8 // dtof
+
+	case AMOVWF:
+		if sc&C_UBIT == 0 {
+			o |= 1 << 7 /* signed */
+		}
+		return o | 0xe<<24 | 0xb<<20 | 8<<16 | 0xa<<8 | 4<<4 | 0<<18 | 0<<8 // toint, double
+
+	case AMOVWD:
+		if sc&C_UBIT == 0 {
+			o |= 1 << 7 /* signed */
+		}
+		return o | 0xe<<24 | 0xb<<20 | 8<<16 | 0xa<<8 | 4<<4 | 0<<18 | 1<<8 // toint, double
+
+	case AMOVFW:
+		if sc&C_UBIT == 0 {
+			o |= 1 << 16 /* signed */
+		}
+		return o | 0xe<<24 | 0xb<<20 | 8<<16 | 0xa<<8 | 4<<4 | 1<<18 | 0<<8 | 1<<7 // toint, double, trunc
+
+	case AMOVDW:
+		if sc&C_UBIT == 0 {
+			o |= 1 << 16 /* signed */
+		}
+		return o | 0xe<<24 | 0xb<<20 | 8<<16 | 0xa<<8 | 4<<4 | 1<<18 | 1<<8 | 1<<7 // toint, double, trunc
+
+	case -AMOVWF: // copy WtoF
+		return o | 0xe<<24 | 0x0<<20 | 0xb<<8 | 1<<4
+
+	case -AMOVFW: // copy FtoW
+		return o | 0xe<<24 | 0x1<<20 | 0xb<<8 | 1<<4
+
+	case -ACMP: // cmp imm
+		return o | 0x3<<24 | 0x5<<20
+
+		// CLZ doesn't support .nil
+	case ACLZ:
+		return o&(0xf<<28) | 0x16f<<16 | 0xf1<<4
+
+	case AMULWT:
+		return o&(0xf<<28) | 0x12<<20 | 0xe<<4
+
+	case AMULWB:
+		return o&(0xf<<28) | 0x12<<20 | 0xa<<4
+
+	case AMULAWT:
+		return o&(0xf<<28) | 0x12<<20 | 0xc<<4
+
+	case AMULAWB:
+		return o&(0xf<<28) | 0x12<<20 | 0x8<<4
+
+	case ABL: // BLX REG
+		return o&(0xf<<28) | 0x12fff3<<4
+	}
+
+	ctxt.Diag("bad rrr %d", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+func opbra(ctxt *obj.Link, p *obj.Prog, a obj.As, sc int) uint32 {
+	if sc&(C_SBIT|C_PBIT|C_WBIT) != 0 {
+		ctxt.Diag("%v: .nil/.nil/.W on bra instruction", p)
+	}
+	sc &= C_SCOND
+	sc ^= C_SCOND_XOR
+	if a == ABL || a == obj.ADUFFZERO || a == obj.ADUFFCOPY {
+		return uint32(sc)<<28 | 0x5<<25 | 0x1<<24
+	}
+	if sc != 0xe {
+		ctxt.Diag("%v: .COND on bcond instruction", p)
+	}
+	switch a {
+	case ABEQ:
+		return 0x0<<28 | 0x5<<25
+	case ABNE:
+		return 0x1<<28 | 0x5<<25
+	case ABCS:
+		return 0x2<<28 | 0x5<<25
+	case ABHS:
+		return 0x2<<28 | 0x5<<25
+	case ABCC:
+		return 0x3<<28 | 0x5<<25
+	case ABLO:
+		return 0x3<<28 | 0x5<<25
+	case ABMI:
+		return 0x4<<28 | 0x5<<25
+	case ABPL:
+		return 0x5<<28 | 0x5<<25
+	case ABVS:
+		return 0x6<<28 | 0x5<<25
+	case ABVC:
+		return 0x7<<28 | 0x5<<25
+	case ABHI:
+		return 0x8<<28 | 0x5<<25
+	case ABLS:
+		return 0x9<<28 | 0x5<<25
+	case ABGE:
+		return 0xa<<28 | 0x5<<25
+	case ABLT:
+		return 0xb<<28 | 0x5<<25
+	case ABGT:
+		return 0xc<<28 | 0x5<<25
+	case ABLE:
+		return 0xd<<28 | 0x5<<25
+	case AB:
+		return 0xe<<28 | 0x5<<25
+	}
+
+	ctxt.Diag("bad bra %v", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+func olr(ctxt *obj.Link, v int32, b int, r int, sc int) uint32 {
+	if sc&C_SBIT != 0 {
+		ctxt.Diag(".nil on LDR/STR instruction")
+	}
+	o := ((uint32(sc) & C_SCOND) ^ C_SCOND_XOR) << 28
+	if sc&C_PBIT == 0 {
+		o |= 1 << 24
+	}
+	if sc&C_UBIT == 0 {
+		o |= 1 << 23
+	}
+	if sc&C_WBIT != 0 {
+		o |= 1 << 21
+	}
+	o |= 1<<26 | 1<<20
+	if v < 0 {
+		if sc&C_UBIT != 0 {
+			ctxt.Diag(".U on neg offset")
+		}
+		v = -v
+		o ^= 1 << 23
+	}
+
+	if v >= 1<<12 || v < 0 {
+		ctxt.Diag("literal span too large: %d (R%d)\n%v", v, b, ctxt.Printp)
+	}
+	o |= uint32(v)
+	o |= (uint32(b) & 15) << 16
+	o |= (uint32(r) & 15) << 12
+	return o
+}
+
+func olhr(ctxt *obj.Link, v int32, b int, r int, sc int) uint32 {
+	if sc&C_SBIT != 0 {
+		ctxt.Diag(".nil on LDRH/STRH instruction")
+	}
+	o := ((uint32(sc) & C_SCOND) ^ C_SCOND_XOR) << 28
+	if sc&C_PBIT == 0 {
+		o |= 1 << 24
+	}
+	if sc&C_WBIT != 0 {
+		o |= 1 << 21
+	}
+	o |= 1<<23 | 1<<20 | 0xb<<4
+	if v < 0 {
+		v = -v
+		o ^= 1 << 23
+	}
+
+	if v >= 1<<8 || v < 0 {
+		ctxt.Diag("literal span too large: %d (R%d)\n%v", v, b, ctxt.Printp)
+	}
+	o |= uint32(v)&0xf | (uint32(v)>>4)<<8 | 1<<22
+	o |= (uint32(b) & 15) << 16
+	o |= (uint32(r) & 15) << 12
+	return o
+}
+
+func osr(ctxt *obj.Link, a obj.As, r int, v int32, b int, sc int) uint32 {
+	o := olr(ctxt, v, b, r, sc) ^ (1 << 20)
+	if a != AMOVW {
+		o |= 1 << 22
+	}
+	return o
+}
+
+func oshr(ctxt *obj.Link, r int, v int32, b int, sc int) uint32 {
+	o := olhr(ctxt, v, b, r, sc) ^ (1 << 20)
+	return o
+}
+
+func osrr(ctxt *obj.Link, r int, i int, b int, sc int) uint32 {
+	return olr(ctxt, int32(i), b, r, sc) ^ (1<<25 | 1<<20)
+}
+
+func oshrr(ctxt *obj.Link, r int, i int, b int, sc int) uint32 {
+	return olhr(ctxt, int32(i), b, r, sc) ^ (1<<22 | 1<<20)
+}
+
+func olrr(ctxt *obj.Link, i int, b int, r int, sc int) uint32 {
+	return olr(ctxt, int32(i), b, r, sc) ^ (1 << 25)
+}
+
+func olhrr(ctxt *obj.Link, i int, b int, r int, sc int) uint32 {
+	return olhr(ctxt, int32(i), b, r, sc) ^ (1 << 22)
+}
+
+func ofsr(ctxt *obj.Link, a obj.As, r int, v int32, b int, sc int, p *obj.Prog) uint32 {
+	if sc&C_SBIT != 0 {
+		ctxt.Diag(".nil on FLDR/FSTR instruction: %v", p)
+	}
+	o := ((uint32(sc) & C_SCOND) ^ C_SCOND_XOR) << 28
+	if sc&C_PBIT == 0 {
+		o |= 1 << 24
+	}
+	if sc&C_WBIT != 0 {
+		o |= 1 << 21
+	}
+	o |= 6<<25 | 1<<24 | 1<<23 | 10<<8
+	if v < 0 {
+		v = -v
+		o ^= 1 << 23
+	}
+
+	if v&3 != 0 {
+		ctxt.Diag("odd offset for floating point op: %d\n%v", v, p)
+	} else if v >= 1<<10 || v < 0 {
+		ctxt.Diag("literal span too large: %d\n%v", v, p)
+	}
+	o |= (uint32(v) >> 2) & 0xFF
+	o |= (uint32(b) & 15) << 16
+	o |= (uint32(r) & 15) << 12
+
+	switch a {
+	default:
+		ctxt.Diag("bad fst %v", a)
+		fallthrough
+
+	case AMOVD:
+		o |= 1 << 8
+		fallthrough
+
+	case AMOVF:
+		break
+	}
+
+	return o
+}
+
+func omvl(ctxt *obj.Link, p *obj.Prog, a *obj.Addr, dr int) uint32 {
+	var o1 uint32
+	if p.Pcond == nil {
+		aclass(ctxt, a)
+		v := immrot(^uint32(ctxt.Instoffset))
+		if v == 0 {
+			ctxt.Diag("missing literal")
+			prasm(p)
+			return 0
+		}
+
+		o1 = oprrr(ctxt, AMVN, int(p.Scond)&C_SCOND)
+		o1 |= uint32(v)
+		o1 |= (uint32(dr) & 15) << 12
+	} else {
+		v := int32(p.Pcond.Pc - p.Pc - 8)
+		o1 = olr(ctxt, v, REGPC, dr, int(p.Scond)&C_SCOND)
+	}
+
+	return o1
+}
+
+func chipzero5(ctxt *obj.Link, e float64) int {
+	// We use GOARM=7 to gate the use of VFPv3 vmov (imm) instructions.
+	if obj.GOARM < 7 || e != 0 {
+		return -1
+	}
+	return 0
+}
+
+func chipfloat5(ctxt *obj.Link, e float64) int {
+	// We use GOARM=7 to gate the use of VFPv3 vmov (imm) instructions.
+	if obj.GOARM < 7 {
+		return -1
+	}
+
+	ei := math.Float64bits(e)
+	l := uint32(ei)
+	h := uint32(ei >> 32)
+
+	if l != 0 || h&0xffff != 0 {
+		return -1
+	}
+	h1 := h & 0x7fc00000
+	if h1 != 0x40000000 && h1 != 0x3fc00000 {
+		return -1
+	}
+	n := 0
+
+	// sign bit (a)
+	if h&0x80000000 != 0 {
+		n |= 1 << 7
+	}
+
+	// exp sign bit (b)
+	if h1 == 0x3fc00000 {
+		n |= 1 << 6
+	}
+
+	// rest of exp and mantissa (cd-efgh)
+	n |= int((h >> 16) & 0x3f)
+
+	//print("match %.8lux %.8lux %d\n", l, h, n);
+	return n
+}
+
+func nocache(p *obj.Prog) {
+	p.Optab = 0
+	p.From.Class = 0
+	if p.From3 != nil {
+		p.From3.Class = 0
+	}
+	p.To.Class = 0
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm/list5.go b/vendor/github.com/google/gops/internal/obj/arm/list5.go
new file mode 100644
index 00000000..f6c50168
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm/list5.go
@@ -0,0 +1,84 @@
+// Inferno utils/5c/list.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/5c/list.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm
+
+import (
+	"fmt"
+
+	"github.com/google/gops/internal/obj"
+)
+
+func init() {
+	obj.RegisterRegister(obj.RBaseARM, MAXREG, Rconv)
+	obj.RegisterOpcode(obj.ABaseARM, Anames)
+}
+
+func Rconv(r int) string {
+	if r == 0 {
+		return "NONE"
+	}
+	if r == REGG {
+		// Special case.
+		return "g"
+	}
+	if REG_R0 <= r && r <= REG_R15 {
+		return fmt.Sprintf("R%d", r-REG_R0)
+	}
+	if REG_F0 <= r && r <= REG_F15 {
+		return fmt.Sprintf("F%d", r-REG_F0)
+	}
+
+	switch r {
+	case REG_FPSR:
+		return "FPSR"
+
+	case REG_FPCR:
+		return "FPCR"
+
+	case REG_CPSR:
+		return "CPSR"
+
+	case REG_SPSR:
+		return "SPSR"
+	}
+
+	return fmt.Sprintf("Rgok(%d)", r-obj.RBaseARM)
+}
+
+func DRconv(a int) string {
+	s := "C_??"
+	if a >= C_NONE && a <= C_NCLASS {
+		s = cnames5[a]
+	}
+	var fp string
+	fp += s
+	return fp
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm/obj5.go b/vendor/github.com/google/gops/internal/obj/arm/obj5.go
new file mode 100644
index 00000000..2c4e39b7
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm/obj5.go
@@ -0,0 +1,1055 @@
+// Derived from Inferno utils/5c/swt.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/5c/swt.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm
+
+import (
+	"fmt"
+	"log"
+	"math"
+
+	"github.com/google/gops/internal/obj"
+	"github.com/google/gops/internal/sys"
+)
+
+var progedit_tlsfallback *obj.LSym
+
+func progedit(ctxt *obj.Link, p *obj.Prog) {
+	p.From.Class = 0
+	p.To.Class = 0
+
+	// Rewrite B/BL to symbol as TYPE_BRANCH.
+	switch p.As {
+	case AB,
+		ABL,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		if p.To.Type == obj.TYPE_MEM && (p.To.Name == obj.NAME_EXTERN || p.To.Name == obj.NAME_STATIC) && p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+	}
+
+	// Replace TLS register fetches on older ARM processors.
+	switch p.As {
+	// Treat MRC 15, 0, <reg>, C13, C0, 3 specially.
+	case AMRC:
+		if p.To.Offset&0xffff0fff == 0xee1d0f70 {
+			// Because the instruction might be rewritten to a BL which returns in R0
+			// the register must be zero.
+			if p.To.Offset&0xf000 != 0 {
+				ctxt.Diag("%v: TLS MRC instruction must write to R0 as it might get translated into a BL instruction", p.Line())
+			}
+
+			if obj.GOARM < 7 {
+				// Replace it with BL runtime.read_tls_fallback(SB) for ARM CPUs that lack the tls extension.
+				if progedit_tlsfallback == nil {
+					progedit_tlsfallback = obj.Linklookup(ctxt, "runtime.read_tls_fallback", 0)
+				}
+
+				// MOVW	LR, R11
+				p.As = AMOVW
+
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGLINK
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGTMP
+
+				// BL	runtime.read_tls_fallback(SB)
+				p = obj.Appendp(ctxt, p)
+
+				p.As = ABL
+				p.To.Type = obj.TYPE_BRANCH
+				p.To.Sym = progedit_tlsfallback
+				p.To.Offset = 0
+
+				// MOVW	R11, LR
+				p = obj.Appendp(ctxt, p)
+
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGTMP
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGLINK
+				break
+			}
+		}
+
+		// Otherwise, MRC/MCR instructions need no further treatment.
+		p.As = AWORD
+	}
+
+	// Rewrite float constants to values stored in memory.
+	switch p.As {
+	case AMOVF:
+		if p.From.Type == obj.TYPE_FCONST && chipfloat5(ctxt, p.From.Val.(float64)) < 0 && (chipzero5(ctxt, p.From.Val.(float64)) < 0 || p.Scond&C_SCOND != C_SCOND_NONE) {
+			f32 := float32(p.From.Val.(float64))
+			i32 := math.Float32bits(f32)
+			literal := fmt.Sprintf("$f32.%08x", i32)
+			s := obj.Linklookup(ctxt, literal, 0)
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+	case AMOVD:
+		if p.From.Type == obj.TYPE_FCONST && chipfloat5(ctxt, p.From.Val.(float64)) < 0 && (chipzero5(ctxt, p.From.Val.(float64)) < 0 || p.Scond&C_SCOND != C_SCOND_NONE) {
+			i64 := math.Float64bits(p.From.Val.(float64))
+			literal := fmt.Sprintf("$f64.%016x", i64)
+			s := obj.Linklookup(ctxt, literal, 0)
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+	}
+
+	if ctxt.Flag_dynlink {
+		rewriteToUseGot(ctxt, p)
+	}
+}
+
+// Rewrite p, if necessary, to access global data via the global offset table.
+func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog) {
+	if p.As == obj.ADUFFCOPY || p.As == obj.ADUFFZERO {
+		//     ADUFFxxx $offset
+		// becomes
+		//     MOVW runtime.duffxxx@GOT, R9
+		//     ADD $offset, R9
+		//     CALL (R9)
+		var sym *obj.LSym
+		if p.As == obj.ADUFFZERO {
+			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+		} else {
+			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+		}
+		offset := p.To.Offset
+		p.As = AMOVW
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		p.From.Sym = sym
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R9
+		p.To.Name = obj.NAME_NONE
+		p.To.Offset = 0
+		p.To.Sym = nil
+		p1 := obj.Appendp(ctxt, p)
+		p1.As = AADD
+		p1.From.Type = obj.TYPE_CONST
+		p1.From.Offset = offset
+		p1.To.Type = obj.TYPE_REG
+		p1.To.Reg = REG_R9
+		p2 := obj.Appendp(ctxt, p1)
+		p2.As = obj.ACALL
+		p2.To.Type = obj.TYPE_MEM
+		p2.To.Reg = REG_R9
+		return
+	}
+
+	// We only care about global data: NAME_EXTERN means a global
+	// symbol in the Go sense, and p.Sym.Local is true for a few
+	// internally defined symbols.
+	if p.From.Type == obj.TYPE_ADDR && p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		// MOVW $sym, Rx becomes MOVW sym@GOT, Rx
+		// MOVW $sym+<off>, Rx becomes MOVW sym@GOT, Rx; ADD <off>, Rx
+		if p.As != AMOVW {
+			ctxt.Diag("do not know how to handle TYPE_ADDR in %v with -dynlink", p)
+		}
+		if p.To.Type != obj.TYPE_REG {
+			ctxt.Diag("do not know how to handle LEAQ-type insn to non-register in %v with -dynlink", p)
+		}
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		if p.From.Offset != 0 {
+			q := obj.Appendp(ctxt, p)
+			q.As = AADD
+			q.From.Type = obj.TYPE_CONST
+			q.From.Offset = p.From.Offset
+			q.To = p.To
+			p.From.Offset = 0
+		}
+	}
+	if p.From3 != nil && p.From3.Name == obj.NAME_EXTERN {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	var source *obj.Addr
+	// MOVx sym, Ry becomes MOVW sym@GOT, R9; MOVx (R9), Ry
+	// MOVx Ry, sym becomes MOVW sym@GOT, R9; MOVx Ry, (R9)
+	// An addition may be inserted between the two MOVs if there is an offset.
+	if p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+			ctxt.Diag("cannot handle NAME_EXTERN on both sides in %v with -dynlink", p)
+		}
+		source = &p.From
+	} else if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+		source = &p.To
+	} else {
+		return
+	}
+	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP {
+		return
+	}
+	if source.Sym.Type == obj.STLSBSS {
+		return
+	}
+	if source.Type != obj.TYPE_MEM {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	p1 := obj.Appendp(ctxt, p)
+	p2 := obj.Appendp(ctxt, p1)
+
+	p1.As = AMOVW
+	p1.From.Type = obj.TYPE_MEM
+	p1.From.Sym = source.Sym
+	p1.From.Name = obj.NAME_GOTREF
+	p1.To.Type = obj.TYPE_REG
+	p1.To.Reg = REG_R9
+
+	p2.As = p.As
+	p2.From = p.From
+	p2.To = p.To
+	if p.From.Name == obj.NAME_EXTERN {
+		p2.From.Reg = REG_R9
+		p2.From.Name = obj.NAME_NONE
+		p2.From.Sym = nil
+	} else if p.To.Name == obj.NAME_EXTERN {
+		p2.To.Reg = REG_R9
+		p2.To.Name = obj.NAME_NONE
+		p2.To.Sym = nil
+	} else {
+		return
+	}
+	obj.Nopout(p)
+}
+
+// Prog.mark
+const (
+	FOLL  = 1 << 0
+	LABEL = 1 << 1
+	LEAF  = 1 << 2
+)
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
+	autosize := int32(0)
+
+	ctxt.Cursym = cursym
+
+	if cursym.Text == nil || cursym.Text.Link == nil {
+		return
+	}
+
+	softfloat(ctxt, cursym)
+
+	p := cursym.Text
+	autoffset := int32(p.To.Offset)
+	if autoffset < 0 {
+		autoffset = 0
+	}
+	cursym.Locals = autoffset
+	cursym.Args = p.To.Val.(int32)
+
+	/*
+	 * find leaf subroutines
+	 * strip NOPs
+	 * expand RET
+	 * expand BECOME pseudo
+	 */
+	var q1 *obj.Prog
+	var q *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		switch p.As {
+		case obj.ATEXT:
+			p.Mark |= LEAF
+
+		case obj.ARET:
+			break
+
+		case ADIV, ADIVU, AMOD, AMODU:
+			q = p
+			if ctxt.Sym_div == nil {
+				initdiv(ctxt)
+			}
+			cursym.Text.Mark &^= LEAF
+			continue
+
+		case obj.ANOP:
+			q1 = p.Link
+			q.Link = q1 /* q is non-nop */
+			if q1 != nil {
+				q1.Mark |= p.Mark
+			}
+			continue
+
+		case ABL,
+			ABX,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			cursym.Text.Mark &^= LEAF
+			fallthrough
+
+		case AB,
+			ABEQ,
+			ABNE,
+			ABCS,
+			ABHS,
+			ABCC,
+			ABLO,
+			ABMI,
+			ABPL,
+			ABVS,
+			ABVC,
+			ABHI,
+			ABLS,
+			ABGE,
+			ABLT,
+			ABGT,
+			ABLE:
+			q1 = p.Pcond
+			if q1 != nil {
+				for q1.As == obj.ANOP {
+					q1 = q1.Link
+					p.Pcond = q1
+				}
+			}
+		}
+
+		q = p
+	}
+
+	var p1 *obj.Prog
+	var p2 *obj.Prog
+	var q2 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		o := p.As
+		switch o {
+		case obj.ATEXT:
+			autosize = int32(p.To.Offset + 4)
+			if autosize <= 4 {
+				if cursym.Text.Mark&LEAF != 0 {
+					p.To.Offset = -4
+					autosize = 0
+				}
+			}
+
+			if autosize == 0 && cursym.Text.Mark&LEAF == 0 {
+				if ctxt.Debugvlog != 0 {
+					ctxt.Logf("save suppressed in: %s\n", cursym.Name)
+				}
+
+				cursym.Text.Mark |= LEAF
+			}
+
+			if cursym.Text.Mark&LEAF != 0 {
+				cursym.Set(obj.AttrLeaf, true)
+				if autosize == 0 {
+					break
+				}
+			}
+
+			if p.From3.Offset&obj.NOSPLIT == 0 {
+				p = stacksplit(ctxt, p, autosize) // emit split check
+			}
+
+			// MOVW.W		R14,$-autosize(SP)
+			p = obj.Appendp(ctxt, p)
+
+			p.As = AMOVW
+			p.Scond |= C_WBIT
+			p.From.Type = obj.TYPE_REG
+			p.From.Reg = REGLINK
+			p.To.Type = obj.TYPE_MEM
+			p.To.Offset = int64(-autosize)
+			p.To.Reg = REGSP
+			p.Spadj = autosize
+
+			if cursym.Text.From3.Offset&obj.WRAPPER != 0 {
+				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+				//
+				//	MOVW g_panic(g), R1
+				//	CMP $0, R1
+				//	B.EQ end
+				//	MOVW panic_argp(R1), R2
+				//	ADD $(autosize+4), R13, R3
+				//	CMP R2, R3
+				//	B.NE end
+				//	ADD $4, R13, R4
+				//	MOVW R4, panic_argp(R1)
+				// end:
+				//	NOP
+				//
+				// The NOP is needed to give the jumps somewhere to land.
+				// It is a liblink NOP, not an ARM NOP: it encodes to 0 instruction bytes.
+
+				p = obj.Appendp(ctxt, p)
+
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGG
+				p.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REG_R1
+
+				p = obj.Appendp(ctxt, p)
+				p.As = ACMP
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = 0
+				p.Reg = REG_R1
+
+				p = obj.Appendp(ctxt, p)
+				p.As = ABEQ
+				p.To.Type = obj.TYPE_BRANCH
+				p1 = p
+
+				p = obj.Appendp(ctxt, p)
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REG_R1
+				p.From.Offset = 0 // Panic.argp
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REG_R2
+
+				p = obj.Appendp(ctxt, p)
+				p.As = AADD
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = int64(autosize) + 4
+				p.Reg = REG_R13
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REG_R3
+
+				p = obj.Appendp(ctxt, p)
+				p.As = ACMP
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REG_R2
+				p.Reg = REG_R3
+
+				p = obj.Appendp(ctxt, p)
+				p.As = ABNE
+				p.To.Type = obj.TYPE_BRANCH
+				p2 = p
+
+				p = obj.Appendp(ctxt, p)
+				p.As = AADD
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = 4
+				p.Reg = REG_R13
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REG_R4
+
+				p = obj.Appendp(ctxt, p)
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REG_R4
+				p.To.Type = obj.TYPE_MEM
+				p.To.Reg = REG_R1
+				p.To.Offset = 0 // Panic.argp
+
+				p = obj.Appendp(ctxt, p)
+
+				p.As = obj.ANOP
+				p1.Pcond = p
+				p2.Pcond = p
+			}
+
+		case obj.ARET:
+			nocache(p)
+			if cursym.Text.Mark&LEAF != 0 {
+				if autosize == 0 {
+					p.As = AB
+					p.From = obj.Addr{}
+					if p.To.Sym != nil { // retjmp
+						p.To.Type = obj.TYPE_BRANCH
+					} else {
+						p.To.Type = obj.TYPE_MEM
+						p.To.Offset = 0
+						p.To.Reg = REGLINK
+					}
+
+					break
+				}
+			}
+
+			p.As = AMOVW
+			p.Scond |= C_PBIT
+			p.From.Type = obj.TYPE_MEM
+			p.From.Offset = int64(autosize)
+			p.From.Reg = REGSP
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REGPC
+
+			// If there are instructions following
+			// this ARET, they come from a branch
+			// with the same stackframe, so no spadj.
+			if p.To.Sym != nil { // retjmp
+				p.To.Reg = REGLINK
+				q2 = obj.Appendp(ctxt, p)
+				q2.As = AB
+				q2.To.Type = obj.TYPE_BRANCH
+				q2.To.Sym = p.To.Sym
+				p.To.Sym = nil
+				p = q2
+			}
+
+		case AADD:
+			if p.From.Type == obj.TYPE_CONST && p.From.Reg == 0 && p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP {
+				p.Spadj = int32(-p.From.Offset)
+			}
+
+		case ASUB:
+			if p.From.Type == obj.TYPE_CONST && p.From.Reg == 0 && p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP {
+				p.Spadj = int32(p.From.Offset)
+			}
+
+		case ADIV, ADIVU, AMOD, AMODU:
+			if cursym.Text.From3.Offset&obj.NOSPLIT != 0 {
+				ctxt.Diag("cannot divide in NOSPLIT function")
+			}
+			if ctxt.Debugdivmod != 0 {
+				break
+			}
+			if p.From.Type != obj.TYPE_REG {
+				break
+			}
+			if p.To.Type != obj.TYPE_REG {
+				break
+			}
+
+			// Make copy because we overwrite p below.
+			q1 := *p
+			if q1.Reg == REGTMP || q1.Reg == 0 && q1.To.Reg == REGTMP {
+				ctxt.Diag("div already using REGTMP: %v", p)
+			}
+
+			/* MOV m(g),REGTMP */
+			p.As = AMOVW
+			p.Lineno = q1.Lineno
+			p.From.Type = obj.TYPE_MEM
+			p.From.Reg = REGG
+			p.From.Offset = 6 * 4 // offset of g.m
+			p.Reg = 0
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REGTMP
+
+			/* MOV a,m_divmod(REGTMP) */
+			p = obj.Appendp(ctxt, p)
+			p.As = AMOVW
+			p.Lineno = q1.Lineno
+			p.From.Type = obj.TYPE_REG
+			p.From.Reg = q1.From.Reg
+			p.To.Type = obj.TYPE_MEM
+			p.To.Reg = REGTMP
+			p.To.Offset = 8 * 4 // offset of m.divmod
+
+			/* MOV b, R8 */
+			p = obj.Appendp(ctxt, p)
+			p.As = AMOVW
+			p.Lineno = q1.Lineno
+			p.From.Type = obj.TYPE_REG
+			p.From.Reg = q1.Reg
+			if q1.Reg == 0 {
+				p.From.Reg = q1.To.Reg
+			}
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_R8
+			p.To.Offset = 0
+
+			/* CALL appropriate */
+			p = obj.Appendp(ctxt, p)
+			p.As = ABL
+			p.Lineno = q1.Lineno
+			p.To.Type = obj.TYPE_BRANCH
+			switch o {
+			case ADIV:
+				p.To.Sym = ctxt.Sym_div
+
+			case ADIVU:
+				p.To.Sym = ctxt.Sym_divu
+
+			case AMOD:
+				p.To.Sym = ctxt.Sym_mod
+
+			case AMODU:
+				p.To.Sym = ctxt.Sym_modu
+			}
+
+			/* MOV REGTMP, b */
+			p = obj.Appendp(ctxt, p)
+			p.As = AMOVW
+			p.Lineno = q1.Lineno
+			p.From.Type = obj.TYPE_REG
+			p.From.Reg = REGTMP
+			p.From.Offset = 0
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = q1.To.Reg
+
+		case AMOVW:
+			if (p.Scond&C_WBIT != 0) && p.To.Type == obj.TYPE_MEM && p.To.Reg == REGSP {
+				p.Spadj = int32(-p.To.Offset)
+			}
+			if (p.Scond&C_PBIT != 0) && p.From.Type == obj.TYPE_MEM && p.From.Reg == REGSP && p.To.Reg != REGPC {
+				p.Spadj = int32(-p.From.Offset)
+			}
+			if p.From.Type == obj.TYPE_ADDR && p.From.Reg == REGSP && p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP {
+				p.Spadj = int32(-p.From.Offset)
+			}
+		}
+	}
+}
+
+func isfloatreg(a *obj.Addr) bool {
+	return a.Type == obj.TYPE_REG && REG_F0 <= a.Reg && a.Reg <= REG_F15
+}
+
+func softfloat(ctxt *obj.Link, cursym *obj.LSym) {
+	if obj.GOARM > 5 {
+		return
+	}
+
+	symsfloat := obj.Linklookup(ctxt, "_sfloat", 0)
+
+	wasfloat := 0
+	for p := cursym.Text; p != nil; p = p.Link {
+		if p.Pcond != nil {
+			p.Pcond.Mark |= LABEL
+		}
+	}
+	var next *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		switch p.As {
+		case AMOVW:
+			if isfloatreg(&p.To) || isfloatreg(&p.From) {
+				goto soft
+			}
+			goto notsoft
+
+		case AMOVWD,
+			AMOVWF,
+			AMOVDW,
+			AMOVFW,
+			AMOVFD,
+			AMOVDF,
+			AMOVF,
+			AMOVD,
+			ACMPF,
+			ACMPD,
+			AADDF,
+			AADDD,
+			ASUBF,
+			ASUBD,
+			AMULF,
+			AMULD,
+			ADIVF,
+			ADIVD,
+			ASQRTF,
+			ASQRTD,
+			AABSF,
+			AABSD,
+			ANEGF,
+			ANEGD:
+			goto soft
+
+		default:
+			goto notsoft
+		}
+
+	soft:
+		if wasfloat == 0 || (p.Mark&LABEL != 0) {
+			next = ctxt.NewProg()
+			*next = *p
+
+			// BL _sfloat(SB)
+			*p = obj.Prog{}
+			p.Ctxt = ctxt
+			p.Link = next
+			p.As = ABL
+			p.To.Type = obj.TYPE_BRANCH
+			p.To.Sym = symsfloat
+			p.Lineno = next.Lineno
+
+			p = next
+			wasfloat = 1
+		}
+
+		continue
+
+	notsoft:
+		wasfloat = 0
+	}
+}
+
+func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
+	// MOVW			g_stackguard(g), R1
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVW
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REGG
+	p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+	if ctxt.Cursym.CFunc() {
+		p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+	}
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R1
+
+	if framesize <= obj.StackSmall {
+		// small stack: SP < stackguard
+		//	CMP	stackguard, SP
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.Reg = REGSP
+	} else if framesize <= obj.StackBig {
+		// large stack: SP-framesize < stackguard-StackSmall
+		//	MOVW $-framesize(SP), R2
+		//	CMP stackguard, R2
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AMOVW
+		p.From.Type = obj.TYPE_ADDR
+		p.From.Reg = REGSP
+		p.From.Offset = int64(-framesize)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.Reg = REG_R2
+	} else {
+		// Such a large stack we need to protect against wraparound
+		// if SP is close to zero.
+		//	SP-stackguard+StackGuard < framesize + (StackGuard-StackSmall)
+		// The +StackGuard on both sides is required to keep the left side positive:
+		// SP is allowed to be slightly below stackguard. See stack.h.
+		//	CMP $StackPreempt, R1
+		//	MOVW.NE $StackGuard(SP), R2
+		//	SUB.NE R1, R2
+		//	MOVW.NE $(framesize+(StackGuard-StackSmall)), R3
+		//	CMP.NE R3, R2
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ACMP
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(uint32(obj.StackPreempt & (1<<32 - 1)))
+		p.Reg = REG_R1
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVW
+		p.From.Type = obj.TYPE_ADDR
+		p.From.Reg = REGSP
+		p.From.Offset = obj.StackGuard
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+		p.Scond = C_SCOND_NE
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASUB
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+		p.Scond = C_SCOND_NE
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVW
+		p.From.Type = obj.TYPE_ADDR
+		p.From.Offset = int64(framesize) + (obj.StackGuard - obj.StackSmall)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R3
+		p.Scond = C_SCOND_NE
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.Reg = REG_R2
+		p.Scond = C_SCOND_NE
+	}
+
+	// BLS call-to-morestack
+	bls := obj.Appendp(ctxt, p)
+	bls.As = ABLS
+	bls.To.Type = obj.TYPE_BRANCH
+
+	var last *obj.Prog
+	for last = ctxt.Cursym.Text; last.Link != nil; last = last.Link {
+	}
+
+	// Now we are at the end of the function, but logically
+	// we are still in function prologue. We need to fix the
+	// SP data and PCDATA.
+	spfix := obj.Appendp(ctxt, last)
+	spfix.As = obj.ANOP
+	spfix.Spadj = -framesize
+
+	pcdata := obj.Appendp(ctxt, spfix)
+	pcdata.Lineno = ctxt.Cursym.Text.Lineno
+	pcdata.Mode = ctxt.Cursym.Text.Mode
+	pcdata.As = obj.APCDATA
+	pcdata.From.Type = obj.TYPE_CONST
+	pcdata.From.Offset = obj.PCDATA_StackMapIndex
+	pcdata.To.Type = obj.TYPE_CONST
+	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+
+	// MOVW	LR, R3
+	movw := obj.Appendp(ctxt, pcdata)
+	movw.As = AMOVW
+	movw.From.Type = obj.TYPE_REG
+	movw.From.Reg = REGLINK
+	movw.To.Type = obj.TYPE_REG
+	movw.To.Reg = REG_R3
+
+	bls.Pcond = movw
+
+	// BL runtime.morestack
+	call := obj.Appendp(ctxt, movw)
+	call.As = obj.ACALL
+	call.To.Type = obj.TYPE_BRANCH
+	morestack := "runtime.morestack"
+	switch {
+	case ctxt.Cursym.CFunc():
+		morestack = "runtime.morestackc"
+	case ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0:
+		morestack = "runtime.morestack_noctxt"
+	}
+	call.To.Sym = obj.Linklookup(ctxt, morestack, 0)
+
+	// B start
+	b := obj.Appendp(ctxt, call)
+	b.As = obj.AJMP
+	b.To.Type = obj.TYPE_BRANCH
+	b.Pcond = ctxt.Cursym.Text.Link
+	b.Spadj = +framesize
+
+	return bls
+}
+
+func initdiv(ctxt *obj.Link) {
+	if ctxt.Sym_div != nil {
+		return
+	}
+	ctxt.Sym_div = obj.Linklookup(ctxt, "_div", 0)
+	ctxt.Sym_divu = obj.Linklookup(ctxt, "_divu", 0)
+	ctxt.Sym_mod = obj.Linklookup(ctxt, "_mod", 0)
+	ctxt.Sym_modu = obj.Linklookup(ctxt, "_modu", 0)
+}
+
+func follow(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	firstp := ctxt.NewProg()
+	lastp := firstp
+	xfol(ctxt, s.Text, &lastp)
+	lastp.Link = nil
+	s.Text = firstp.Link
+}
+
+func relinv(a obj.As) obj.As {
+	switch a {
+	case ABEQ:
+		return ABNE
+	case ABNE:
+		return ABEQ
+	case ABCS:
+		return ABCC
+	case ABHS:
+		return ABLO
+	case ABCC:
+		return ABCS
+	case ABLO:
+		return ABHS
+	case ABMI:
+		return ABPL
+	case ABPL:
+		return ABMI
+	case ABVS:
+		return ABVC
+	case ABVC:
+		return ABVS
+	case ABHI:
+		return ABLS
+	case ABLS:
+		return ABHI
+	case ABGE:
+		return ABLT
+	case ABLT:
+		return ABGE
+	case ABGT:
+		return ABLE
+	case ABLE:
+		return ABGT
+	}
+
+	log.Fatalf("unknown relation: %s", Anames[a])
+	return 0
+}
+
+func xfol(ctxt *obj.Link, p *obj.Prog, last **obj.Prog) {
+	var q *obj.Prog
+	var r *obj.Prog
+	var i int
+
+loop:
+	if p == nil {
+		return
+	}
+	a := p.As
+	if a == AB {
+		q = p.Pcond
+		if q != nil && q.As != obj.ATEXT {
+			p.Mark |= FOLL
+			p = q
+			if p.Mark&FOLL == 0 {
+				goto loop
+			}
+		}
+	}
+
+	if p.Mark&FOLL != 0 {
+		i = 0
+		q = p
+		for ; i < 4; i, q = i+1, q.Link {
+			if q == *last || q == nil {
+				break
+			}
+			a = q.As
+			if a == obj.ANOP {
+				i--
+				continue
+			}
+
+			if a == AB || (a == obj.ARET && q.Scond == C_SCOND_NONE) || a == ARFE || a == obj.AUNDEF {
+				goto copy
+			}
+			if q.Pcond == nil || (q.Pcond.Mark&FOLL != 0) {
+				continue
+			}
+			if a != ABEQ && a != ABNE {
+				continue
+			}
+
+		copy:
+			for {
+				r = ctxt.NewProg()
+				*r = *p
+				if r.Mark&FOLL == 0 {
+					fmt.Printf("can't happen 1\n")
+				}
+				r.Mark |= FOLL
+				if p != q {
+					p = p.Link
+					(*last).Link = r
+					*last = r
+					continue
+				}
+
+				(*last).Link = r
+				*last = r
+				if a == AB || (a == obj.ARET && q.Scond == C_SCOND_NONE) || a == ARFE || a == obj.AUNDEF {
+					return
+				}
+				r.As = ABNE
+				if a == ABNE {
+					r.As = ABEQ
+				}
+				r.Pcond = p.Link
+				r.Link = p.Pcond
+				if r.Link.Mark&FOLL == 0 {
+					xfol(ctxt, r.Link, last)
+				}
+				if r.Pcond.Mark&FOLL == 0 {
+					fmt.Printf("can't happen 2\n")
+				}
+				return
+			}
+		}
+
+		a = AB
+		q = ctxt.NewProg()
+		q.As = a
+		q.Lineno = p.Lineno
+		q.To.Type = obj.TYPE_BRANCH
+		q.To.Offset = p.Pc
+		q.Pcond = p
+		p = q
+	}
+
+	p.Mark |= FOLL
+	(*last).Link = p
+	*last = p
+	if a == AB || (a == obj.ARET && p.Scond == C_SCOND_NONE) || a == ARFE || a == obj.AUNDEF {
+		return
+	}
+
+	if p.Pcond != nil {
+		if a != ABL && a != ABX && p.Link != nil {
+			q = obj.Brchain(ctxt, p.Link)
+			if a != obj.ATEXT {
+				if q != nil && (q.Mark&FOLL != 0) {
+					p.As = relinv(a)
+					p.Link = p.Pcond
+					p.Pcond = q
+				}
+			}
+
+			xfol(ctxt, p.Link, last)
+			q = obj.Brchain(ctxt, p.Pcond)
+			if q == nil {
+				q = p.Pcond
+			}
+			if q.Mark&FOLL != 0 {
+				p.Pcond = q
+				return
+			}
+
+			p = q
+			goto loop
+		}
+	}
+
+	p = p.Link
+	goto loop
+}
+
+var unaryDst = map[obj.As]bool{
+	ASWI:  true,
+	AWORD: true,
+}
+
+var Linkarm = obj.LinkArch{
+	Arch:       sys.ArchARM,
+	Preprocess: preprocess,
+	Assemble:   span5,
+	Follow:     follow,
+	Progedit:   progedit,
+	UnaryDst:   unaryDst,
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/a.out.go b/vendor/github.com/google/gops/internal/obj/arm64/a.out.go
new file mode 100644
index 00000000..b3a27d43
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm64/a.out.go
@@ -0,0 +1,719 @@
+// cmd/7c/7.out.h  from Vita Nuova.
+// https://code.google.com/p/ken-cc/source/browse/src/cmd/7c/7.out.h
+//
+// 	Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// 	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// 	Portions Copyright © 1997-1999 Vita Nuova Limited
+// 	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// 	Portions Copyright © 2004,2006 Bruce Ellis
+// 	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// 	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// 	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm64
+
+import "github.com/google/gops/internal/obj"
+
+const (
+	NSNAME = 8
+	NSYM   = 50
+	NREG   = 32 /* number of general registers */
+	NFREG  = 32 /* number of floating point registers */
+)
+
+// General purpose registers, kept in the low bits of Prog.Reg.
+const (
+	// integer
+	REG_R0 = obj.RBaseARM64 + iota
+	REG_R1
+	REG_R2
+	REG_R3
+	REG_R4
+	REG_R5
+	REG_R6
+	REG_R7
+	REG_R8
+	REG_R9
+	REG_R10
+	REG_R11
+	REG_R12
+	REG_R13
+	REG_R14
+	REG_R15
+	REG_R16
+	REG_R17
+	REG_R18
+	REG_R19
+	REG_R20
+	REG_R21
+	REG_R22
+	REG_R23
+	REG_R24
+	REG_R25
+	REG_R26
+	REG_R27
+	REG_R28
+	REG_R29
+	REG_R30
+	REG_R31
+
+	// scalar floating point
+	REG_F0
+	REG_F1
+	REG_F2
+	REG_F3
+	REG_F4
+	REG_F5
+	REG_F6
+	REG_F7
+	REG_F8
+	REG_F9
+	REG_F10
+	REG_F11
+	REG_F12
+	REG_F13
+	REG_F14
+	REG_F15
+	REG_F16
+	REG_F17
+	REG_F18
+	REG_F19
+	REG_F20
+	REG_F21
+	REG_F22
+	REG_F23
+	REG_F24
+	REG_F25
+	REG_F26
+	REG_F27
+	REG_F28
+	REG_F29
+	REG_F30
+	REG_F31
+
+	// SIMD
+	REG_V0
+	REG_V1
+	REG_V2
+	REG_V3
+	REG_V4
+	REG_V5
+	REG_V6
+	REG_V7
+	REG_V8
+	REG_V9
+	REG_V10
+	REG_V11
+	REG_V12
+	REG_V13
+	REG_V14
+	REG_V15
+	REG_V16
+	REG_V17
+	REG_V18
+	REG_V19
+	REG_V20
+	REG_V21
+	REG_V22
+	REG_V23
+	REG_V24
+	REG_V25
+	REG_V26
+	REG_V27
+	REG_V28
+	REG_V29
+	REG_V30
+	REG_V31
+
+	// The EQ in
+	// 	CSET	EQ, R0
+	// is encoded as TYPE_REG, even though it's not really a register.
+	COND_EQ
+	COND_NE
+	COND_HS
+	COND_LO
+	COND_MI
+	COND_PL
+	COND_VS
+	COND_VC
+	COND_HI
+	COND_LS
+	COND_GE
+	COND_LT
+	COND_GT
+	COND_LE
+	COND_AL
+	COND_NV
+
+	REG_RSP = REG_V31 + 32 // to differentiate ZR/SP, REG_RSP&0x1f = 31
+)
+
+// Not registers, but flags that can be combined with regular register
+// constants to indicate extended register conversion. When checking,
+// you should subtract obj.RBaseARM64 first. From this difference, bit 11
+// indicates extended register, bits 8-10 select the conversion mode.
+const REG_EXT = obj.RBaseARM64 + 1<<11
+
+const (
+	REG_UXTB = REG_EXT + iota<<8
+	REG_UXTH
+	REG_UXTW
+	REG_UXTX
+	REG_SXTB
+	REG_SXTH
+	REG_SXTW
+	REG_SXTX
+)
+
+// Special registers, after subtracting obj.RBaseARM64, bit 12 indicates
+// a special register and the low bits select the register.
+const (
+	REG_SPECIAL = obj.RBaseARM64 + 1<<12 + iota
+	REG_DAIF
+	REG_NZCV
+	REG_FPSR
+	REG_FPCR
+	REG_SPSR_EL1
+	REG_ELR_EL1
+	REG_SPSR_EL2
+	REG_ELR_EL2
+	REG_CurrentEL
+	REG_SP_EL0
+	REG_SPSel
+	REG_DAIFSet
+	REG_DAIFClr
+)
+
+// Register assignments:
+//
+// compiler allocates R0 up as temps
+// compiler allocates register variables R7-R25
+// compiler allocates external registers R26 down
+//
+// compiler allocates register variables F7-F26
+// compiler allocates external registers F26 down
+const (
+	REGMIN = REG_R7  // register variables allocated from here to REGMAX
+	REGRT1 = REG_R16 // ARM64 IP0, for external linker, runtime, duffzero and duffcopy
+	REGRT2 = REG_R17 // ARM64 IP1, for external linker, runtime, duffcopy
+	REGPR  = REG_R18 // ARM64 platform register, unused in the Go toolchain
+	REGMAX = REG_R25
+
+	REGCTXT = REG_R26 // environment for closures
+	REGTMP  = REG_R27 // reserved for liblink
+	REGG    = REG_R28 // G
+	REGFP   = REG_R29 // frame pointer, unused in the Go toolchain
+	REGLINK = REG_R30
+
+	// ARM64 uses R31 as both stack pointer and zero register,
+	// depending on the instruction. To differentiate RSP from ZR,
+	// we use a different numeric value for REGZERO and REGSP.
+	REGZERO = REG_R31
+	REGSP   = REG_RSP
+
+	FREGRET = REG_F0
+	FREGMIN = REG_F7  // first register variable
+	FREGMAX = REG_F26 // last register variable for 7g only
+	FREGEXT = REG_F26 // first external register
+)
+
+const (
+	BIG = 2048 - 8
+)
+
+const (
+	/* mark flags */
+	LABEL = 1 << iota
+	LEAF
+	FLOAT
+	BRANCH
+	LOAD
+	FCMP
+	SYNC
+	LIST
+	FOLL
+	NOSCHED
+)
+
+const (
+	C_NONE   = iota
+	C_REG    // R0..R30
+	C_RSP    // R0..R30, RSP
+	C_FREG   // F0..F31
+	C_VREG   // V0..V31
+	C_PAIR   // (Rn, Rm)
+	C_SHIFT  // Rn<<2
+	C_EXTREG // Rn.UXTB<<3
+	C_SPR    // REG_NZCV
+	C_COND   // EQ, NE, etc
+
+	C_ZCON     // $0 or ZR
+	C_ADDCON0  // 12-bit unsigned, unshifted
+	C_ADDCON   // 12-bit unsigned, shifted left by 0 or 12
+	C_MOVCON   // generated by a 16-bit constant, optionally inverted and/or shifted by multiple of 16
+	C_BITCON   // bitfield and logical immediate masks
+	C_ABCON0   // could be C_ADDCON0 or C_BITCON
+	C_ABCON    // could be C_ADDCON or C_BITCON
+	C_MBCON    // could be C_MOVCON or C_BITCON
+	C_LCON     // 32-bit constant
+	C_VCON     // 64-bit constant
+	C_FCON     // floating-point constant
+	C_VCONADDR // 64-bit memory address
+
+	C_AACON // ADDCON offset in auto constant $a(FP)
+	C_LACON // 32-bit offset in auto constant $a(FP)
+	C_AECON // ADDCON offset in extern constant $e(SB)
+
+	// TODO(aram): only one branch class should be enough
+	C_SBRA // for TYPE_BRANCH
+	C_LBRA
+
+	C_NPAUTO   // -512 <= x < 0, 0 mod 8
+	C_NSAUTO   // -256 <= x < 0
+	C_PSAUTO   // 0 to 255
+	C_PPAUTO   // 0 to 504, 0 mod 8
+	C_UAUTO4K  // 0 to 4095
+	C_UAUTO8K  // 0 to 8190, 0 mod 2
+	C_UAUTO16K // 0 to 16380, 0 mod 4
+	C_UAUTO32K // 0 to 32760, 0 mod 8
+	C_UAUTO64K // 0 to 65520, 0 mod 16
+	C_LAUTO    // any other 32-bit constant
+
+	C_SEXT1  // 0 to 4095, direct
+	C_SEXT2  // 0 to 8190
+	C_SEXT4  // 0 to 16380
+	C_SEXT8  // 0 to 32760
+	C_SEXT16 // 0 to 65520
+	C_LEXT
+
+	// TODO(aram): s/AUTO/INDIR/
+	C_ZOREG  // 0(R)
+	C_NPOREG // mirror NPAUTO, etc
+	C_NSOREG
+	C_PSOREG
+	C_PPOREG
+	C_UOREG4K
+	C_UOREG8K
+	C_UOREG16K
+	C_UOREG32K
+	C_UOREG64K
+	C_LOREG
+
+	C_ADDR // TODO(aram): explain difference from C_VCONADDR
+
+	// The GOT slot for a symbol in -dynlink mode.
+	C_GOTADDR
+
+	// TLS "var" in local exec mode: will become a constant offset from
+	// thread local base that is ultimately chosen by the program linker.
+	C_TLS_LE
+
+	// TLS "var" in initial exec mode: will become a memory address (chosen
+	// by the program linker) that the dynamic linker will fill with the
+	// offset from the thread local base.
+	C_TLS_IE
+
+	C_ROFF // register offset (including register extended)
+
+	C_GOK
+	C_TEXTSIZE
+	C_NCLASS // must be last
+)
+
+const (
+	C_XPRE  = 1 << 6 // match arm.C_WBIT, so Prog.String know how to print it
+	C_XPOST = 1 << 5 // match arm.C_PBIT, so Prog.String know how to print it
+)
+
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p arm64
+
+const (
+	AADC = obj.ABaseARM64 + obj.A_ARCHSPECIFIC + iota
+	AADCS
+	AADCSW
+	AADCW
+	AADD
+	AADDS
+	AADDSW
+	AADDW
+	AADR
+	AADRP
+	AAND
+	AANDS
+	AANDSW
+	AANDW
+	AASR
+	AASRW
+	AAT
+	ABFI
+	ABFIW
+	ABFM
+	ABFMW
+	ABFXIL
+	ABFXILW
+	ABIC
+	ABICS
+	ABICSW
+	ABICW
+	ABRK
+	ACBNZ
+	ACBNZW
+	ACBZ
+	ACBZW
+	ACCMN
+	ACCMNW
+	ACCMP
+	ACCMPW
+	ACINC
+	ACINCW
+	ACINV
+	ACINVW
+	ACLREX
+	ACLS
+	ACLSW
+	ACLZ
+	ACLZW
+	ACMN
+	ACMNW
+	ACMP
+	ACMPW
+	ACNEG
+	ACNEGW
+	ACRC32B
+	ACRC32CB
+	ACRC32CH
+	ACRC32CW
+	ACRC32CX
+	ACRC32H
+	ACRC32W
+	ACRC32X
+	ACSEL
+	ACSELW
+	ACSET
+	ACSETM
+	ACSETMW
+	ACSETW
+	ACSINC
+	ACSINCW
+	ACSINV
+	ACSINVW
+	ACSNEG
+	ACSNEGW
+	ADC
+	ADCPS1
+	ADCPS2
+	ADCPS3
+	ADMB
+	ADRPS
+	ADSB
+	AEON
+	AEONW
+	AEOR
+	AEORW
+	AERET
+	AEXTR
+	AEXTRW
+	AHINT
+	AHLT
+	AHVC
+	AIC
+	AISB
+	ALDAR
+	ALDARB
+	ALDARH
+	ALDARW
+	ALDAXP
+	ALDAXPW
+	ALDAXR
+	ALDAXRB
+	ALDAXRH
+	ALDAXRW
+	ALDP
+	ALDXR
+	ALDXRB
+	ALDXRH
+	ALDXRW
+	ALDXP
+	ALDXPW
+	ALSL
+	ALSLW
+	ALSR
+	ALSRW
+	AMADD
+	AMADDW
+	AMNEG
+	AMNEGW
+	AMOVK
+	AMOVKW
+	AMOVN
+	AMOVNW
+	AMOVZ
+	AMOVZW
+	AMRS
+	AMSR
+	AMSUB
+	AMSUBW
+	AMUL
+	AMULW
+	AMVN
+	AMVNW
+	ANEG
+	ANEGS
+	ANEGSW
+	ANEGW
+	ANGC
+	ANGCS
+	ANGCSW
+	ANGCW
+	AORN
+	AORNW
+	AORR
+	AORRW
+	APRFM
+	APRFUM
+	ARBIT
+	ARBITW
+	AREM
+	AREMW
+	AREV
+	AREV16
+	AREV16W
+	AREV32
+	AREVW
+	AROR
+	ARORW
+	ASBC
+	ASBCS
+	ASBCSW
+	ASBCW
+	ASBFIZ
+	ASBFIZW
+	ASBFM
+	ASBFMW
+	ASBFX
+	ASBFXW
+	ASDIV
+	ASDIVW
+	ASEV
+	ASEVL
+	ASMADDL
+	ASMC
+	ASMNEGL
+	ASMSUBL
+	ASMULH
+	ASMULL
+	ASTXR
+	ASTXRB
+	ASTXRH
+	ASTXP
+	ASTXPW
+	ASTXRW
+	ASTLP
+	ASTLPW
+	ASTLR
+	ASTLRB
+	ASTLRH
+	ASTLRW
+	ASTLXP
+	ASTLXPW
+	ASTLXR
+	ASTLXRB
+	ASTLXRH
+	ASTLXRW
+	ASTP
+	ASUB
+	ASUBS
+	ASUBSW
+	ASUBW
+	ASVC
+	ASXTB
+	ASXTBW
+	ASXTH
+	ASXTHW
+	ASXTW
+	ASYS
+	ASYSL
+	ATBNZ
+	ATBZ
+	ATLBI
+	ATST
+	ATSTW
+	AUBFIZ
+	AUBFIZW
+	AUBFM
+	AUBFMW
+	AUBFX
+	AUBFXW
+	AUDIV
+	AUDIVW
+	AUMADDL
+	AUMNEGL
+	AUMSUBL
+	AUMULH
+	AUMULL
+	AUREM
+	AUREMW
+	AUXTB
+	AUXTH
+	AUXTW
+	AUXTBW
+	AUXTHW
+	AWFE
+	AWFI
+	AYIELD
+	AMOVB
+	AMOVBU
+	AMOVH
+	AMOVHU
+	AMOVW
+	AMOVWU
+	AMOVD
+	AMOVNP
+	AMOVNPW
+	AMOVP
+	AMOVPD
+	AMOVPQ
+	AMOVPS
+	AMOVPSW
+	AMOVPW
+	ABEQ
+	ABNE
+	ABCS
+	ABHS
+	ABCC
+	ABLO
+	ABMI
+	ABPL
+	ABVS
+	ABVC
+	ABHI
+	ABLS
+	ABGE
+	ABLT
+	ABGT
+	ABLE
+	AFABSD
+	AFABSS
+	AFADDD
+	AFADDS
+	AFCCMPD
+	AFCCMPED
+	AFCCMPS
+	AFCCMPES
+	AFCMPD
+	AFCMPED
+	AFCMPES
+	AFCMPS
+	AFCVTSD
+	AFCVTDS
+	AFCVTZSD
+	AFCVTZSDW
+	AFCVTZSS
+	AFCVTZSSW
+	AFCVTZUD
+	AFCVTZUDW
+	AFCVTZUS
+	AFCVTZUSW
+	AFDIVD
+	AFDIVS
+	AFMOVD
+	AFMOVS
+	AFMULD
+	AFMULS
+	AFNEGD
+	AFNEGS
+	AFSQRTD
+	AFSQRTS
+	AFSUBD
+	AFSUBS
+	ASCVTFD
+	ASCVTFS
+	ASCVTFWD
+	ASCVTFWS
+	AUCVTFD
+	AUCVTFS
+	AUCVTFWD
+	AUCVTFWS
+	AWORD
+	ADWORD
+	AFCSELS
+	AFCSELD
+	AFMAXS
+	AFMINS
+	AFMAXD
+	AFMIND
+	AFMAXNMS
+	AFMAXNMD
+	AFNMULS
+	AFNMULD
+	AFRINTNS
+	AFRINTND
+	AFRINTPS
+	AFRINTPD
+	AFRINTMS
+	AFRINTMD
+	AFRINTZS
+	AFRINTZD
+	AFRINTAS
+	AFRINTAD
+	AFRINTXS
+	AFRINTXD
+	AFRINTIS
+	AFRINTID
+	AFMADDS
+	AFMADDD
+	AFMSUBS
+	AFMSUBD
+	AFNMADDS
+	AFNMADDD
+	AFNMSUBS
+	AFNMSUBD
+	AFMINNMS
+	AFMINNMD
+	AFCVTDH
+	AFCVTHS
+	AFCVTHD
+	AFCVTSH
+	AAESD
+	AAESE
+	AAESIMC
+	AAESMC
+	ASHA1C
+	ASHA1H
+	ASHA1M
+	ASHA1P
+	ASHA1SU0
+	ASHA1SU1
+	ASHA256H
+	ASHA256H2
+	ASHA256SU0
+	ASHA256SU1
+	ALAST
+	AB  = obj.AJMP
+	ABL = obj.ACALL
+)
+
+const (
+	// shift types
+	SHIFT_LL = 0 << 22
+	SHIFT_LR = 1 << 22
+	SHIFT_AR = 2 << 22
+)
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/anames.go b/vendor/github.com/google/gops/internal/obj/arm64/anames.go
new file mode 100644
index 00000000..d1334596
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm64/anames.go
@@ -0,0 +1,370 @@
+// Generated by stringer -i a.out.go -o anames.go -p arm64
+// Do not edit.
+
+package arm64
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "ADC",
+	"ADCS",
+	"ADCSW",
+	"ADCW",
+	"ADD",
+	"ADDS",
+	"ADDSW",
+	"ADDW",
+	"ADR",
+	"ADRP",
+	"AND",
+	"ANDS",
+	"ANDSW",
+	"ANDW",
+	"ASR",
+	"ASRW",
+	"AT",
+	"BFI",
+	"BFIW",
+	"BFM",
+	"BFMW",
+	"BFXIL",
+	"BFXILW",
+	"BIC",
+	"BICS",
+	"BICSW",
+	"BICW",
+	"BRK",
+	"CBNZ",
+	"CBNZW",
+	"CBZ",
+	"CBZW",
+	"CCMN",
+	"CCMNW",
+	"CCMP",
+	"CCMPW",
+	"CINC",
+	"CINCW",
+	"CINV",
+	"CINVW",
+	"CLREX",
+	"CLS",
+	"CLSW",
+	"CLZ",
+	"CLZW",
+	"CMN",
+	"CMNW",
+	"CMP",
+	"CMPW",
+	"CNEG",
+	"CNEGW",
+	"CRC32B",
+	"CRC32CB",
+	"CRC32CH",
+	"CRC32CW",
+	"CRC32CX",
+	"CRC32H",
+	"CRC32W",
+	"CRC32X",
+	"CSEL",
+	"CSELW",
+	"CSET",
+	"CSETM",
+	"CSETMW",
+	"CSETW",
+	"CSINC",
+	"CSINCW",
+	"CSINV",
+	"CSINVW",
+	"CSNEG",
+	"CSNEGW",
+	"DC",
+	"DCPS1",
+	"DCPS2",
+	"DCPS3",
+	"DMB",
+	"DRPS",
+	"DSB",
+	"EON",
+	"EONW",
+	"EOR",
+	"EORW",
+	"ERET",
+	"EXTR",
+	"EXTRW",
+	"HINT",
+	"HLT",
+	"HVC",
+	"IC",
+	"ISB",
+	"LDAR",
+	"LDARB",
+	"LDARH",
+	"LDARW",
+	"LDAXP",
+	"LDAXPW",
+	"LDAXR",
+	"LDAXRB",
+	"LDAXRH",
+	"LDAXRW",
+	"LDP",
+	"LDXR",
+	"LDXRB",
+	"LDXRH",
+	"LDXRW",
+	"LDXP",
+	"LDXPW",
+	"LSL",
+	"LSLW",
+	"LSR",
+	"LSRW",
+	"MADD",
+	"MADDW",
+	"MNEG",
+	"MNEGW",
+	"MOVK",
+	"MOVKW",
+	"MOVN",
+	"MOVNW",
+	"MOVZ",
+	"MOVZW",
+	"MRS",
+	"MSR",
+	"MSUB",
+	"MSUBW",
+	"MUL",
+	"MULW",
+	"MVN",
+	"MVNW",
+	"NEG",
+	"NEGS",
+	"NEGSW",
+	"NEGW",
+	"NGC",
+	"NGCS",
+	"NGCSW",
+	"NGCW",
+	"ORN",
+	"ORNW",
+	"ORR",
+	"ORRW",
+	"PRFM",
+	"PRFUM",
+	"RBIT",
+	"RBITW",
+	"REM",
+	"REMW",
+	"REV",
+	"REV16",
+	"REV16W",
+	"REV32",
+	"REVW",
+	"ROR",
+	"RORW",
+	"SBC",
+	"SBCS",
+	"SBCSW",
+	"SBCW",
+	"SBFIZ",
+	"SBFIZW",
+	"SBFM",
+	"SBFMW",
+	"SBFX",
+	"SBFXW",
+	"SDIV",
+	"SDIVW",
+	"SEV",
+	"SEVL",
+	"SMADDL",
+	"SMC",
+	"SMNEGL",
+	"SMSUBL",
+	"SMULH",
+	"SMULL",
+	"STXR",
+	"STXRB",
+	"STXRH",
+	"STXP",
+	"STXPW",
+	"STXRW",
+	"STLP",
+	"STLPW",
+	"STLR",
+	"STLRB",
+	"STLRH",
+	"STLRW",
+	"STLXP",
+	"STLXPW",
+	"STLXR",
+	"STLXRB",
+	"STLXRH",
+	"STLXRW",
+	"STP",
+	"SUB",
+	"SUBS",
+	"SUBSW",
+	"SUBW",
+	"SVC",
+	"SXTB",
+	"SXTBW",
+	"SXTH",
+	"SXTHW",
+	"SXTW",
+	"SYS",
+	"SYSL",
+	"TBNZ",
+	"TBZ",
+	"TLBI",
+	"TST",
+	"TSTW",
+	"UBFIZ",
+	"UBFIZW",
+	"UBFM",
+	"UBFMW",
+	"UBFX",
+	"UBFXW",
+	"UDIV",
+	"UDIVW",
+	"UMADDL",
+	"UMNEGL",
+	"UMSUBL",
+	"UMULH",
+	"UMULL",
+	"UREM",
+	"UREMW",
+	"UXTB",
+	"UXTH",
+	"UXTW",
+	"UXTBW",
+	"UXTHW",
+	"WFE",
+	"WFI",
+	"YIELD",
+	"MOVB",
+	"MOVBU",
+	"MOVH",
+	"MOVHU",
+	"MOVW",
+	"MOVWU",
+	"MOVD",
+	"MOVNP",
+	"MOVNPW",
+	"MOVP",
+	"MOVPD",
+	"MOVPQ",
+	"MOVPS",
+	"MOVPSW",
+	"MOVPW",
+	"BEQ",
+	"BNE",
+	"BCS",
+	"BHS",
+	"BCC",
+	"BLO",
+	"BMI",
+	"BPL",
+	"BVS",
+	"BVC",
+	"BHI",
+	"BLS",
+	"BGE",
+	"BLT",
+	"BGT",
+	"BLE",
+	"FABSD",
+	"FABSS",
+	"FADDD",
+	"FADDS",
+	"FCCMPD",
+	"FCCMPED",
+	"FCCMPS",
+	"FCCMPES",
+	"FCMPD",
+	"FCMPED",
+	"FCMPES",
+	"FCMPS",
+	"FCVTSD",
+	"FCVTDS",
+	"FCVTZSD",
+	"FCVTZSDW",
+	"FCVTZSS",
+	"FCVTZSSW",
+	"FCVTZUD",
+	"FCVTZUDW",
+	"FCVTZUS",
+	"FCVTZUSW",
+	"FDIVD",
+	"FDIVS",
+	"FMOVD",
+	"FMOVS",
+	"FMULD",
+	"FMULS",
+	"FNEGD",
+	"FNEGS",
+	"FSQRTD",
+	"FSQRTS",
+	"FSUBD",
+	"FSUBS",
+	"SCVTFD",
+	"SCVTFS",
+	"SCVTFWD",
+	"SCVTFWS",
+	"UCVTFD",
+	"UCVTFS",
+	"UCVTFWD",
+	"UCVTFWS",
+	"WORD",
+	"DWORD",
+	"FCSELS",
+	"FCSELD",
+	"FMAXS",
+	"FMINS",
+	"FMAXD",
+	"FMIND",
+	"FMAXNMS",
+	"FMAXNMD",
+	"FNMULS",
+	"FNMULD",
+	"FRINTNS",
+	"FRINTND",
+	"FRINTPS",
+	"FRINTPD",
+	"FRINTMS",
+	"FRINTMD",
+	"FRINTZS",
+	"FRINTZD",
+	"FRINTAS",
+	"FRINTAD",
+	"FRINTXS",
+	"FRINTXD",
+	"FRINTIS",
+	"FRINTID",
+	"FMADDS",
+	"FMADDD",
+	"FMSUBS",
+	"FMSUBD",
+	"FNMADDS",
+	"FNMADDD",
+	"FNMSUBS",
+	"FNMSUBD",
+	"FMINNMS",
+	"FMINNMD",
+	"FCVTDH",
+	"FCVTHS",
+	"FCVTHD",
+	"FCVTSH",
+	"AESD",
+	"AESE",
+	"AESIMC",
+	"AESMC",
+	"SHA1C",
+	"SHA1H",
+	"SHA1M",
+	"SHA1P",
+	"SHA1SU0",
+	"SHA1SU1",
+	"SHA256H",
+	"SHA256H2",
+	"SHA256SU0",
+	"SHA256SU1",
+	"LAST",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/anames7.go b/vendor/github.com/google/gops/internal/obj/arm64/anames7.go
new file mode 100644
index 00000000..d55b34f9
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm64/anames7.go
@@ -0,0 +1,70 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package arm64
+
+var cnames7 = []string{
+	"NONE",
+	"REG",
+	"RSP",
+	"FREG",
+	"VREG",
+	"PAIR",
+	"SHIFT",
+	"EXTREG",
+	"SPR",
+	"COND",
+	"ZCON",
+	"ADDCON0",
+	"ADDCON",
+	"MOVCON",
+	"BITCON",
+	"ABCON0",
+	"ABCON",
+	"MBCON",
+	"LCON",
+	"VCON",
+	"FCON",
+	"VCONADDR",
+	"AACON",
+	"LACON",
+	"AECON",
+	"SBRA",
+	"LBRA",
+	"NPAUTO",
+	"NSAUTO",
+	"PSAUTO",
+	"PPAUTO",
+	"UAUTO4K",
+	"UAUTO8K",
+	"UAUTO16K",
+	"UAUTO32K",
+	"UAUTO64K",
+	"LAUTO",
+	"SEXT1",
+	"SEXT2",
+	"SEXT4",
+	"SEXT8",
+	"SEXT16",
+	"LEXT",
+	"ZOREG",
+	"NPOREG",
+	"NSOREG",
+	"PSOREG",
+	"PPOREG",
+	"UOREG4K",
+	"UOREG8K",
+	"UOREG16K",
+	"UOREG32K",
+	"UOREG64K",
+	"LOREG",
+	"ADDR",
+	"GOTADDR",
+	"TLS_LE",
+	"TLS_IE",
+	"ROFF",
+	"GOK",
+	"TEXTSIZE",
+	"NCLASS",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/asm7.go b/vendor/github.com/google/gops/internal/obj/arm64/asm7.go
new file mode 100644
index 00000000..a6dae2e4
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm64/asm7.go
@@ -0,0 +1,4374 @@
+// cmd/7l/asm.c, cmd/7l/asmout.c, cmd/7l/optab.c, cmd/7l/span.c, cmd/ld/sub.c, cmd/ld/mod.c, from Vita Nuova.
+// https://code.google.com/p/ken-cc/source/browse/
+//
+// 	Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// 	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// 	Portions Copyright © 1997-1999 Vita Nuova Limited
+// 	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// 	Portions Copyright © 2004,2006 Bruce Ellis
+// 	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// 	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// 	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm64
+
+import (
+	"fmt"
+	"log"
+	"math"
+	"sort"
+
+	"github.com/google/gops/internal/obj"
+)
+
+const (
+	funcAlign = 16
+)
+
+const (
+	REGFROM = 1
+)
+
+type Optab struct {
+	as    obj.As
+	a1    uint8
+	a2    uint8
+	a3    uint8
+	type_ int8
+	size  int8
+	param int16
+	flag  int8
+	scond uint16
+}
+
+var oprange [ALAST & obj.AMask][]Optab
+
+var xcmp [C_NCLASS][C_NCLASS]bool
+
+const (
+	S32     = 0 << 31
+	S64     = 1 << 31
+	Sbit    = 1 << 29
+	LSL0_32 = 2 << 13
+	LSL0_64 = 3 << 13
+)
+
+func OPDP2(x uint32) uint32 {
+	return 0<<30 | 0<<29 | 0xd6<<21 | x<<10
+}
+
+func OPDP3(sf uint32, op54 uint32, op31 uint32, o0 uint32) uint32 {
+	return sf<<31 | op54<<29 | 0x1B<<24 | op31<<21 | o0<<15
+}
+
+func OPBcc(x uint32) uint32 {
+	return 0x2A<<25 | 0<<24 | 0<<4 | x&15
+}
+
+func OPBLR(x uint32) uint32 {
+	/* x=0, JMP; 1, CALL; 2, RET */
+	return 0x6B<<25 | 0<<23 | x<<21 | 0x1F<<16 | 0<<10
+}
+
+func SYSOP(l uint32, op0 uint32, op1 uint32, crn uint32, crm uint32, op2 uint32, rt uint32) uint32 {
+	return 0x354<<22 | l<<21 | op0<<19 | op1<<16 | crn&15<<12 | crm&15<<8 | op2<<5 | rt
+}
+
+func SYSHINT(x uint32) uint32 {
+	return SYSOP(0, 0, 3, 2, 0, x, 0x1F)
+}
+
+func LDSTR12U(sz uint32, v uint32, opc uint32) uint32 {
+	return sz<<30 | 7<<27 | v<<26 | 1<<24 | opc<<22
+}
+
+func LDSTR9S(sz uint32, v uint32, opc uint32) uint32 {
+	return sz<<30 | 7<<27 | v<<26 | 0<<24 | opc<<22
+}
+
+func LD2STR(o uint32) uint32 {
+	return o &^ (3 << 22)
+}
+
+func LDSTX(sz uint32, o2 uint32, l uint32, o1 uint32, o0 uint32) uint32 {
+	return sz<<30 | 0x8<<24 | o2<<23 | l<<22 | o1<<21 | o0<<15
+}
+
+func FPCMP(m uint32, s uint32, type_ uint32, op uint32, op2 uint32) uint32 {
+	return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<14 | 8<<10 | op2
+}
+
+func FPCCMP(m uint32, s uint32, type_ uint32, op uint32) uint32 {
+	return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | 1<<10 | op<<4
+}
+
+func FPOP1S(m uint32, s uint32, type_ uint32, op uint32) uint32 {
+	return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<15 | 0x10<<10
+}
+
+func FPOP2S(m uint32, s uint32, type_ uint32, op uint32) uint32 {
+	return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<12 | 2<<10
+}
+
+func FPCVTI(sf uint32, s uint32, type_ uint32, rmode uint32, op uint32) uint32 {
+	return sf<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | rmode<<19 | op<<16 | 0<<10
+}
+
+func ADR(p uint32, o uint32, rt uint32) uint32 {
+	return p<<31 | (o&3)<<29 | 0x10<<24 | ((o>>2)&0x7FFFF)<<5 | rt&31
+}
+
+func OPBIT(x uint32) uint32 {
+	return 1<<30 | 0<<29 | 0xD6<<21 | 0<<16 | x<<10
+}
+
+const (
+	LFROM = 1 << 0
+	LTO   = 1 << 1
+)
+
+var optab = []Optab{
+	/* struct Optab:
+	OPCODE, from, prog->reg, to, type,size,param,flag,scond */
+	{obj.ATEXT, C_ADDR, C_NONE, C_TEXTSIZE, 0, 0, 0, 0, 0},
+
+	/* arithmetic operations */
+	{AADD, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{AADD, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{AADC, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{AADC, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{ANEG, C_REG, C_NONE, C_REG, 25, 4, 0, 0, 0},
+	{ANEG, C_NONE, C_NONE, C_REG, 25, 4, 0, 0, 0},
+	{ANGC, C_REG, C_NONE, C_REG, 17, 4, 0, 0, 0},
+	{ACMP, C_REG, C_REG, C_NONE, 1, 4, 0, 0, 0},
+	{AADD, C_ADDCON, C_RSP, C_RSP, 2, 4, 0, 0, 0},
+	{AADD, C_ADDCON, C_NONE, C_RSP, 2, 4, 0, 0, 0},
+	{ACMP, C_ADDCON, C_RSP, C_NONE, 2, 4, 0, 0, 0},
+	{AADD, C_MOVCON, C_RSP, C_RSP, 62, 8, 0, 0, 0},
+	{AADD, C_MOVCON, C_NONE, C_RSP, 62, 8, 0, 0, 0},
+	{ACMP, C_MOVCON, C_RSP, C_NONE, 62, 8, 0, 0, 0},
+	{AADD, C_BITCON, C_RSP, C_RSP, 62, 8, 0, 0, 0},
+	{AADD, C_BITCON, C_NONE, C_RSP, 62, 8, 0, 0, 0},
+	{ACMP, C_BITCON, C_RSP, C_NONE, 62, 8, 0, 0, 0},
+	{AADD, C_VCON, C_RSP, C_RSP, 13, 8, 0, LFROM, 0},
+	{AADD, C_VCON, C_NONE, C_RSP, 13, 8, 0, LFROM, 0},
+	{ACMP, C_VCON, C_REG, C_NONE, 13, 8, 0, LFROM, 0},
+	{AADD, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0},
+	{AADD, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0},
+	{AMVN, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0},
+	{ACMP, C_SHIFT, C_REG, C_NONE, 3, 4, 0, 0, 0},
+	{ANEG, C_SHIFT, C_NONE, C_REG, 26, 4, 0, 0, 0},
+	{AADD, C_REG, C_RSP, C_RSP, 27, 4, 0, 0, 0},
+	{AADD, C_REG, C_NONE, C_RSP, 27, 4, 0, 0, 0},
+	{ACMP, C_REG, C_RSP, C_NONE, 27, 4, 0, 0, 0},
+	{AADD, C_EXTREG, C_RSP, C_RSP, 27, 4, 0, 0, 0},
+	{AADD, C_EXTREG, C_NONE, C_RSP, 27, 4, 0, 0, 0},
+	{AMVN, C_EXTREG, C_NONE, C_RSP, 27, 4, 0, 0, 0},
+	{ACMP, C_EXTREG, C_RSP, C_NONE, 27, 4, 0, 0, 0},
+	{AADD, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{AADD, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+
+	/* logical operations */
+	{AAND, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{AAND, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{ABIC, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{ABIC, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{AAND, C_BITCON, C_REG, C_REG, 53, 4, 0, 0, 0},
+	{AAND, C_BITCON, C_NONE, C_REG, 53, 4, 0, 0, 0},
+	{ABIC, C_BITCON, C_REG, C_REG, 53, 4, 0, 0, 0},
+	{ABIC, C_BITCON, C_NONE, C_REG, 53, 4, 0, 0, 0},
+	{AAND, C_MOVCON, C_REG, C_REG, 62, 8, 0, 0, 0},
+	{AAND, C_MOVCON, C_NONE, C_REG, 62, 8, 0, 0, 0},
+	{ABIC, C_MOVCON, C_REG, C_REG, 62, 8, 0, 0, 0},
+	{ABIC, C_MOVCON, C_NONE, C_REG, 62, 8, 0, 0, 0},
+	{AAND, C_VCON, C_REG, C_REG, 28, 8, 0, LFROM, 0},
+	{AAND, C_VCON, C_NONE, C_REG, 28, 8, 0, LFROM, 0},
+	{ABIC, C_VCON, C_REG, C_REG, 28, 8, 0, LFROM, 0},
+	{ABIC, C_VCON, C_NONE, C_REG, 28, 8, 0, LFROM, 0},
+	{AAND, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0},
+	{AAND, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0},
+	{ABIC, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0},
+	{ABIC, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0},
+	{AMOVD, C_RSP, C_NONE, C_RSP, 24, 4, 0, 0, 0},
+	{AMVN, C_REG, C_NONE, C_REG, 24, 4, 0, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, /* also MOVHU */
+	{AMOVW, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, /* also MOVWU */
+	/* TODO: MVN C_SHIFT */
+
+	/* MOVs that become MOVK/MOVN/MOVZ/ADD/SUB/OR */
+	{AMOVW, C_MOVCON, C_NONE, C_REG, 32, 4, 0, 0, 0},
+	{AMOVD, C_MOVCON, C_NONE, C_REG, 32, 4, 0, 0, 0},
+
+	// TODO: these don't work properly.
+	// { AMOVW,		C_ADDCON,	C_NONE,	C_REG,		2, 4, 0 , 0},
+	// { AMOVD,		C_ADDCON,	C_NONE,	C_REG,		2, 4, 0 , 0},
+	{AMOVW, C_BITCON, C_NONE, C_REG, 32, 4, 0, 0, 0},
+	{AMOVD, C_BITCON, C_NONE, C_REG, 32, 4, 0, 0, 0},
+
+	{AMOVK, C_VCON, C_NONE, C_REG, 33, 4, 0, 0, 0},
+	{AMOVD, C_AACON, C_NONE, C_REG, 4, 4, REGFROM, 0, 0},
+	{ASDIV, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0},
+	{ASDIV, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0},
+	{AB, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0},
+	{ABL, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0},
+	{AB, C_NONE, C_NONE, C_ZOREG, 6, 4, 0, 0, 0},
+	{ABL, C_NONE, C_NONE, C_REG, 6, 4, 0, 0, 0},
+	{ABL, C_REG, C_NONE, C_REG, 6, 4, 0, 0, 0},
+	{ABL, C_NONE, C_NONE, C_ZOREG, 6, 4, 0, 0, 0},
+	{obj.ARET, C_NONE, C_NONE, C_REG, 6, 4, 0, 0, 0},
+	{obj.ARET, C_NONE, C_NONE, C_ZOREG, 6, 4, 0, 0, 0},
+	{AADRP, C_SBRA, C_NONE, C_REG, 60, 4, 0, 0, 0},
+	{AADR, C_SBRA, C_NONE, C_REG, 61, 4, 0, 0, 0},
+	{ABFM, C_VCON, C_REG, C_REG, 42, 4, 0, 0, 0},
+	{ABFI, C_VCON, C_REG, C_REG, 43, 4, 0, 0, 0},
+	{AEXTR, C_VCON, C_REG, C_REG, 44, 4, 0, 0, 0},
+	{ASXTB, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0},
+	{ACLS, C_REG, C_NONE, C_REG, 46, 4, 0, 0, 0},
+	{ABEQ, C_NONE, C_NONE, C_SBRA, 7, 4, 0, 0, 0},
+	{ALSL, C_VCON, C_REG, C_REG, 8, 4, 0, 0, 0},
+	{ALSL, C_VCON, C_NONE, C_REG, 8, 4, 0, 0, 0},
+	{ALSL, C_REG, C_NONE, C_REG, 9, 4, 0, 0, 0},
+	{ALSL, C_REG, C_REG, C_REG, 9, 4, 0, 0, 0},
+	{ASVC, C_NONE, C_NONE, C_VCON, 10, 4, 0, 0, 0},
+	{ASVC, C_NONE, C_NONE, C_NONE, 10, 4, 0, 0, 0},
+	{ADWORD, C_NONE, C_NONE, C_VCON, 11, 8, 0, 0, 0},
+	{ADWORD, C_NONE, C_NONE, C_LEXT, 11, 8, 0, 0, 0},
+	{ADWORD, C_NONE, C_NONE, C_ADDR, 11, 8, 0, 0, 0},
+	{ADWORD, C_NONE, C_NONE, C_LACON, 11, 8, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_LCON, 14, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_LEXT, 14, 4, 0, 0, 0},
+	{AWORD, C_NONE, C_NONE, C_ADDR, 14, 4, 0, 0, 0},
+	{AMOVW, C_VCON, C_NONE, C_REG, 12, 4, 0, LFROM, 0},
+	{AMOVW, C_VCONADDR, C_NONE, C_REG, 68, 8, 0, 0, 0},
+	{AMOVD, C_VCON, C_NONE, C_REG, 12, 4, 0, LFROM, 0},
+	{AMOVD, C_VCONADDR, C_NONE, C_REG, 68, 8, 0, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AMOVB, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0},
+	{AMOVBU, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0},
+	{AMOVH, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0},
+	{AMOVW, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0},
+	{AMOVD, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0},
+	{AMOVD, C_GOTADDR, C_NONE, C_REG, 71, 8, 0, 0, 0},
+	{AMOVD, C_TLS_LE, C_NONE, C_REG, 69, 4, 0, 0, 0},
+	{AMOVD, C_TLS_IE, C_NONE, C_REG, 70, 8, 0, 0, 0},
+	{AMUL, C_REG, C_REG, C_REG, 15, 4, 0, 0, 0},
+	{AMUL, C_REG, C_NONE, C_REG, 15, 4, 0, 0, 0},
+	{AMADD, C_REG, C_REG, C_REG, 15, 4, 0, 0, 0},
+	{AREM, C_REG, C_REG, C_REG, 16, 8, 0, 0, 0},
+	{AREM, C_REG, C_NONE, C_REG, 16, 8, 0, 0, 0},
+	{ACSEL, C_COND, C_REG, C_REG, 18, 4, 0, 0, 0}, /* from3 optional */
+	{ACSET, C_COND, C_NONE, C_REG, 18, 4, 0, 0, 0},
+	{ACCMN, C_COND, C_REG, C_VCON, 19, 4, 0, 0, 0}, /* from3 either C_REG or C_VCON */
+
+	/* scaled 12-bit unsigned displacement store */
+	{AMOVB, C_REG, C_NONE, C_UAUTO4K, 20, 4, REGSP, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_UOREG4K, 20, 4, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_UAUTO4K, 20, 4, REGSP, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_UOREG4K, 20, 4, 0, 0, 0},
+
+	{AMOVH, C_REG, C_NONE, C_UAUTO8K, 20, 4, REGSP, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_UOREG8K, 20, 4, 0, 0, 0},
+
+	{AMOVW, C_REG, C_NONE, C_UAUTO16K, 20, 4, REGSP, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_UOREG16K, 20, 4, 0, 0, 0},
+
+	/* unscaled 9-bit signed displacement store */
+	{AMOVB, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+
+	{AMOVH, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+
+	{AMOVD, C_REG, C_NONE, C_UAUTO32K, 20, 4, REGSP, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_UOREG32K, 20, 4, 0, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+
+	/* short displacement load */
+	{AMOVB, C_UAUTO4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVB, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVB, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVB, C_UOREG4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVB, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+
+	{AMOVBU, C_UAUTO4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVBU, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVBU, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVBU, C_UOREG4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVBU, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+
+	{AMOVH, C_UAUTO8K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVH, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVH, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVH, C_UOREG8K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVH, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+
+	{AMOVW, C_UAUTO16K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVW, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVW, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVW, C_UOREG16K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVW, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+
+	{AMOVD, C_UAUTO32K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVD, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVD, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0},
+	{AMOVD, C_UOREG32K, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+	{AMOVD, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0},
+
+	/* long displacement store */
+	{AMOVB, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0},
+	{AMOVH, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0},
+
+	/* long displacement load */
+	{AMOVB, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0},
+	{AMOVB, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVB, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVBU, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0},
+	{AMOVBU, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVBU, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVH, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0},
+	{AMOVH, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVH, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVW, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0},
+	{AMOVW, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVW, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVD, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0},
+	{AMOVD, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+	{AMOVD, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0},
+
+	/* load long effective stack address (load int32 offset and add) */
+	{AMOVD, C_LACON, C_NONE, C_REG, 34, 8, REGSP, LFROM, 0},
+
+	/* pre/post-indexed load (unscaled, signed 9-bit offset) */
+	{AMOVD, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST},
+	{AMOVW, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST},
+	{AMOVH, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST},
+	{AMOVB, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST},
+	{AMOVBU, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST},
+	{AFMOVS, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPOST},
+	{AFMOVD, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPOST},
+	{AMOVD, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE},
+	{AMOVW, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE},
+	{AMOVH, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE},
+	{AMOVB, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE},
+	{AMOVBU, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE},
+	{AFMOVS, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPRE},
+	{AFMOVD, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPRE},
+
+	/* pre/post-indexed store (unscaled, signed 9-bit offset) */
+	{AMOVD, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AMOVW, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AMOVH, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AMOVB, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AMOVBU, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AFMOVS, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AFMOVD, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST},
+	{AMOVD, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+	{AMOVW, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+	{AMOVH, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+	{AMOVB, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+	{AMOVBU, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+	{AFMOVS, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+	{AFMOVD, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE},
+
+	/* pre/post-indexed load/store register pair
+	   (unscaled, signed 10-bit quad-aligned offset) */
+	{ALDP, C_LOREG, C_NONE, C_PAIR, 66, 4, 0, 0, C_XPRE},
+	{ALDP, C_LOREG, C_NONE, C_PAIR, 66, 4, 0, 0, C_XPOST},
+	{ASTP, C_PAIR, C_NONE, C_LOREG, 67, 4, 0, 0, C_XPRE},
+	{ASTP, C_PAIR, C_NONE, C_LOREG, 67, 4, 0, 0, C_XPOST},
+
+	/* special */
+	{AMOVD, C_SPR, C_NONE, C_REG, 35, 4, 0, 0, 0},
+	{AMRS, C_SPR, C_NONE, C_REG, 35, 4, 0, 0, 0},
+	{AMOVD, C_REG, C_NONE, C_SPR, 36, 4, 0, 0, 0},
+	{AMSR, C_REG, C_NONE, C_SPR, 36, 4, 0, 0, 0},
+	{AMOVD, C_VCON, C_NONE, C_SPR, 37, 4, 0, 0, 0},
+	{AMSR, C_VCON, C_NONE, C_SPR, 37, 4, 0, 0, 0},
+	{AERET, C_NONE, C_NONE, C_NONE, 41, 4, 0, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_UAUTO16K, 20, 4, REGSP, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_UOREG16K, 20, 4, 0, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_UAUTO32K, 20, 4, REGSP, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_UOREG32K, 20, 4, 0, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0},
+	{AFMOVS, C_UAUTO16K, C_NONE, C_FREG, 21, 4, REGSP, 0, 0},
+	{AFMOVS, C_NSAUTO, C_NONE, C_FREG, 21, 4, REGSP, 0, 0},
+	{AFMOVS, C_ZOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0},
+	{AFMOVS, C_UOREG16K, C_NONE, C_FREG, 21, 4, 0, 0, 0},
+	{AFMOVS, C_NSOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0},
+	{AFMOVD, C_UAUTO32K, C_NONE, C_FREG, 21, 4, REGSP, 0, 0},
+	{AFMOVD, C_NSAUTO, C_NONE, C_FREG, 21, 4, REGSP, 0, 0},
+	{AFMOVD, C_ZOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0},
+	{AFMOVD, C_UOREG32K, C_NONE, C_FREG, 21, 4, 0, 0, 0},
+	{AFMOVD, C_NSOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0},
+	{AFMOVS, C_FREG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0},
+	{AFMOVD, C_FREG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0},
+	{AFMOVD, C_FREG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0},
+	{AFMOVS, C_LAUTO, C_NONE, C_FREG, 31, 8, REGSP, LFROM, 0},
+	{AFMOVS, C_LOREG, C_NONE, C_FREG, 31, 8, 0, LFROM, 0},
+	{AFMOVD, C_LAUTO, C_NONE, C_FREG, 31, 8, REGSP, LFROM, 0},
+	{AFMOVD, C_LOREG, C_NONE, C_FREG, 31, 8, 0, LFROM, 0},
+	{AFMOVS, C_FREG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AFMOVS, C_ADDR, C_NONE, C_FREG, 65, 12, 0, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_ADDR, 64, 12, 0, 0, 0},
+	{AFMOVD, C_ADDR, C_NONE, C_FREG, 65, 12, 0, 0, 0},
+	{AFADDS, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AFADDS, C_FREG, C_FREG, C_FREG, 54, 4, 0, 0, 0},
+	{AFADDS, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AFADDS, C_FCON, C_FREG, C_FREG, 54, 4, 0, 0, 0},
+	{AFMOVS, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AFMOVD, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0},
+	{AFCVTZSD, C_FREG, C_NONE, C_REG, 29, 4, 0, 0, 0},
+	{ASCVTFD, C_REG, C_NONE, C_FREG, 29, 4, 0, 0, 0},
+	{AFMOVS, C_REG, C_NONE, C_FREG, 29, 4, 0, 0, 0},
+	{AFMOVS, C_FREG, C_NONE, C_REG, 29, 4, 0, 0, 0},
+	{AFMOVD, C_REG, C_NONE, C_FREG, 29, 4, 0, 0, 0},
+	{AFMOVD, C_FREG, C_NONE, C_REG, 29, 4, 0, 0, 0},
+	{AFCMPS, C_FREG, C_FREG, C_NONE, 56, 4, 0, 0, 0},
+	{AFCMPS, C_FCON, C_FREG, C_NONE, 56, 4, 0, 0, 0},
+	{AFCCMPS, C_COND, C_REG, C_VCON, 57, 4, 0, 0, 0},
+	{AFCSELD, C_COND, C_REG, C_FREG, 18, 4, 0, 0, 0},
+	{AFCVTSD, C_FREG, C_NONE, C_FREG, 29, 4, 0, 0, 0},
+	{ACLREX, C_NONE, C_NONE, C_VCON, 38, 4, 0, 0, 0},
+	{ACLREX, C_NONE, C_NONE, C_NONE, 38, 4, 0, 0, 0},
+	{ACBZ, C_REG, C_NONE, C_SBRA, 39, 4, 0, 0, 0},
+	{ATBZ, C_VCON, C_REG, C_SBRA, 40, 4, 0, 0, 0},
+	{ASYS, C_VCON, C_NONE, C_NONE, 50, 4, 0, 0, 0},
+	{ASYS, C_VCON, C_REG, C_NONE, 50, 4, 0, 0, 0},
+	{ASYSL, C_VCON, C_NONE, C_REG, 50, 4, 0, 0, 0},
+	{ADMB, C_VCON, C_NONE, C_NONE, 51, 4, 0, 0, 0},
+	{AHINT, C_VCON, C_NONE, C_NONE, 52, 4, 0, 0, 0},
+	{ALDAR, C_ZOREG, C_NONE, C_REG, 58, 4, 0, 0, 0},
+	{ALDXR, C_ZOREG, C_NONE, C_REG, 58, 4, 0, 0, 0},
+	{ALDAXR, C_ZOREG, C_NONE, C_REG, 58, 4, 0, 0, 0},
+	{ALDXP, C_ZOREG, C_REG, C_REG, 58, 4, 0, 0, 0},
+	{ASTLR, C_REG, C_NONE, C_ZOREG, 59, 4, 0, 0, 0},  // to3=C_NONE
+	{ASTXR, C_REG, C_NONE, C_ZOREG, 59, 4, 0, 0, 0},  // to3=C_REG
+	{ASTLXR, C_REG, C_NONE, C_ZOREG, 59, 4, 0, 0, 0}, // to3=C_REG
+
+	//	{ ASTXP,		C_REG, C_NONE,	C_ZOREG,		59, 4, 0 , 0}, // TODO(aram):
+
+	{AAESD, C_VREG, C_NONE, C_VREG, 29, 4, 0, 0, 0},
+	{ASHA1C, C_VREG, C_REG, C_VREG, 1, 4, 0, 0, 0},
+
+	{obj.AUNDEF, C_NONE, C_NONE, C_NONE, 90, 4, 0, 0, 0},
+	{obj.AUSEFIELD, C_ADDR, C_NONE, C_NONE, 0, 0, 0, 0, 0},
+	{obj.APCDATA, C_VCON, C_NONE, C_VCON, 0, 0, 0, 0, 0},
+	{obj.AFUNCDATA, C_VCON, C_NONE, C_ADDR, 0, 0, 0, 0, 0},
+	{obj.ANOP, C_NONE, C_NONE, C_NONE, 0, 0, 0, 0, 0},
+	{obj.ADUFFZERO, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // same as AB/ABL
+	{obj.ADUFFCOPY, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // same as AB/ABL
+
+	{obj.AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0, 0, 0},
+}
+
+/*
+ * valid pstate field values, and value to use in instruction
+ */
+var pstatefield = []struct {
+	a uint32
+	b uint32
+}{
+	{REG_SPSel, 0<<16 | 4<<12 | 5<<5},
+	{REG_DAIFSet, 3<<16 | 4<<12 | 6<<5},
+	{REG_DAIFClr, 3<<16 | 4<<12 | 7<<5},
+}
+
+var pool struct {
+	start uint32
+	size  uint32
+}
+
+func prasm(p *obj.Prog) {
+	fmt.Printf("%v\n", p)
+}
+
+func span7(ctxt *obj.Link, cursym *obj.LSym) {
+	p := cursym.Text
+	if p == nil || p.Link == nil { // handle external functions and ELF section symbols
+		return
+	}
+	ctxt.Cursym = cursym
+	ctxt.Autosize = int32(p.To.Offset&0xffffffff) + 8
+
+	if oprange[AAND&obj.AMask] == nil {
+		buildop(ctxt)
+	}
+
+	bflag := 1
+	c := int64(0)
+	p.Pc = c
+	var m int
+	var o *Optab
+	for p = p.Link; p != nil; p = p.Link {
+		ctxt.Curp = p
+		if p.As == ADWORD && (c&7) != 0 {
+			c += 4
+		}
+		p.Pc = c
+		o = oplook(ctxt, p)
+		m = int(o.size)
+		if m == 0 {
+			if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
+				ctxt.Diag("zero-width instruction\n%v", p)
+			}
+			continue
+		}
+
+		switch o.flag & (LFROM | LTO) {
+		case LFROM:
+			addpool(ctxt, p, &p.From)
+
+		case LTO:
+			addpool(ctxt, p, &p.To)
+			break
+		}
+
+		if p.As == AB || p.As == obj.ARET || p.As == AERET { /* TODO: other unconditional operations */
+			checkpool(ctxt, p, 0)
+		}
+		c += int64(m)
+		if ctxt.Blitrl != nil {
+			checkpool(ctxt, p, 1)
+		}
+	}
+
+	cursym.Size = c
+
+	/*
+	 * if any procedure is large enough to
+	 * generate a large SBRA branch, then
+	 * generate extra passes putting branches
+	 * around jmps to fix. this is rare.
+	 */
+	for bflag != 0 {
+		if ctxt.Debugvlog != 0 {
+			ctxt.Logf("%5.2f span1\n", obj.Cputime())
+		}
+		bflag = 0
+		c = 0
+		for p = cursym.Text.Link; p != nil; p = p.Link {
+			if p.As == ADWORD && (c&7) != 0 {
+				c += 4
+			}
+			p.Pc = c
+			o = oplook(ctxt, p)
+
+			/* very large branches */
+			if o.type_ == 7 && p.Pcond != nil {
+				otxt := p.Pcond.Pc - c
+				if otxt <= -(1<<18)+10 || otxt >= (1<<18)-10 {
+					q := ctxt.NewProg()
+					q.Link = p.Link
+					p.Link = q
+					q.As = AB
+					q.To.Type = obj.TYPE_BRANCH
+					q.Pcond = p.Pcond
+					p.Pcond = q
+					q = ctxt.NewProg()
+					q.Link = p.Link
+					p.Link = q
+					q.As = AB
+					q.To.Type = obj.TYPE_BRANCH
+					q.Pcond = q.Link.Link
+					bflag = 1
+				}
+			}
+			m = int(o.size)
+
+			if m == 0 {
+				if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
+					ctxt.Diag("zero-width instruction\n%v", p)
+				}
+				continue
+			}
+
+			c += int64(m)
+		}
+	}
+
+	c += -c & (funcAlign - 1)
+	cursym.Size = c
+
+	/*
+	 * lay out the code, emitting code and data relocations.
+	 */
+	cursym.Grow(cursym.Size)
+	bp := cursym.P
+	psz := int32(0)
+	var i int
+	var out [6]uint32
+	for p := cursym.Text.Link; p != nil; p = p.Link {
+		ctxt.Pc = p.Pc
+		ctxt.Curp = p
+		o = oplook(ctxt, p)
+
+		// need to align DWORDs on 8-byte boundary. The ISA doesn't
+		// require it, but the various 64-bit loads we generate assume it.
+		if o.as == ADWORD && psz%8 != 0 {
+			bp[3] = 0
+			bp[2] = bp[3]
+			bp[1] = bp[2]
+			bp[0] = bp[1]
+			bp = bp[4:]
+			psz += 4
+		}
+
+		if int(o.size) > 4*len(out) {
+			log.Fatalf("out array in span7 is too small, need at least %d for %v", o.size/4, p)
+		}
+		asmout(ctxt, p, o, out[:])
+		for i = 0; i < int(o.size/4); i++ {
+			ctxt.Arch.ByteOrder.PutUint32(bp, out[i])
+			bp = bp[4:]
+			psz += 4
+		}
+	}
+}
+
+/*
+ * when the first reference to the literal pool threatens
+ * to go out of range of a 1Mb PC-relative offset
+ * drop the pool now, and branch round it.
+ */
+func checkpool(ctxt *obj.Link, p *obj.Prog, skip int) {
+	if pool.size >= 0xffff0 || !ispcdisp(int32(p.Pc+4+int64(pool.size)-int64(pool.start)+8)) {
+		flushpool(ctxt, p, skip)
+	} else if p.Link == nil {
+		flushpool(ctxt, p, 2)
+	}
+}
+
+func flushpool(ctxt *obj.Link, p *obj.Prog, skip int) {
+	if ctxt.Blitrl != nil {
+		if skip != 0 {
+			if ctxt.Debugvlog != 0 && skip == 1 {
+				fmt.Printf("note: flush literal pool at %#x: len=%d ref=%x\n", uint64(p.Pc+4), pool.size, pool.start)
+			}
+			q := ctxt.NewProg()
+			q.As = AB
+			q.To.Type = obj.TYPE_BRANCH
+			q.Pcond = p.Link
+			q.Link = ctxt.Blitrl
+			q.Lineno = p.Lineno
+			ctxt.Blitrl = q
+		} else if p.Pc+int64(pool.size)-int64(pool.start) < maxPCDisp {
+			return
+		}
+
+		// The line number for constant pool entries doesn't really matter.
+		// We set it to the line number of the preceding instruction so that
+		// there are no deltas to encode in the pc-line tables.
+		for q := ctxt.Blitrl; q != nil; q = q.Link {
+			q.Lineno = p.Lineno
+		}
+
+		ctxt.Elitrl.Link = p.Link
+		p.Link = ctxt.Blitrl
+
+		ctxt.Blitrl = nil /* BUG: should refer back to values until out-of-range */
+		ctxt.Elitrl = nil
+		pool.size = 0
+		pool.start = 0
+	}
+}
+
+/*
+ * TODO: hash
+ */
+func addpool(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) {
+	c := aclass(ctxt, a)
+	lit := ctxt.Instoffset
+	t := *ctxt.NewProg()
+	t.As = AWORD
+	sz := 4
+
+	// MOVD foo(SB), R is actually
+	//	MOVD addr, REGTMP
+	//	MOVD REGTMP, R
+	// where addr is the address of the DWORD containing the address of foo.
+	if p.As == AMOVD || c == C_ADDR || c == C_VCON || int64(lit) != int64(int32(lit)) || uint64(lit) != uint64(uint32(lit)) {
+		// conservative: don't know if we want signed or unsigned extension.
+		// in case of ambiguity, store 64-bit
+		t.As = ADWORD
+		sz = 8
+	}
+
+	switch c {
+	// TODO(aram): remove.
+	default:
+		if a.Name != obj.NAME_EXTERN {
+			fmt.Printf("addpool: %v in %v shouldn't go to default case\n", DRconv(c), p)
+		}
+
+		t.To.Offset = a.Offset
+		t.To.Sym = a.Sym
+		t.To.Type = a.Type
+		t.To.Name = a.Name
+
+	/* This is here because MOV uint12<<12, R is disabled in optab.
+	Because of this, we need to load the constant from memory. */
+	case C_ADDCON:
+		fallthrough
+
+	case C_PSAUTO,
+		C_PPAUTO,
+		C_UAUTO4K,
+		C_UAUTO8K,
+		C_UAUTO16K,
+		C_UAUTO32K,
+		C_UAUTO64K,
+		C_NSAUTO,
+		C_NPAUTO,
+		C_LAUTO,
+		C_PPOREG,
+		C_PSOREG,
+		C_UOREG4K,
+		C_UOREG8K,
+		C_UOREG16K,
+		C_UOREG32K,
+		C_UOREG64K,
+		C_NSOREG,
+		C_NPOREG,
+		C_LOREG,
+		C_LACON,
+		C_LCON,
+		C_VCON:
+		if a.Name == obj.NAME_EXTERN {
+			fmt.Printf("addpool: %v in %v needs reloc\n", DRconv(c), p)
+		}
+
+		t.To.Type = obj.TYPE_CONST
+		t.To.Offset = lit
+		break
+	}
+
+	for q := ctxt.Blitrl; q != nil; q = q.Link { /* could hash on t.t0.offset */
+		if q.To == t.To {
+			p.Pcond = q
+			return
+		}
+	}
+
+	q := ctxt.NewProg()
+	*q = t
+	q.Pc = int64(pool.size)
+	if ctxt.Blitrl == nil {
+		ctxt.Blitrl = q
+		pool.start = uint32(p.Pc)
+	} else {
+		ctxt.Elitrl.Link = q
+	}
+	ctxt.Elitrl = q
+	pool.size = -pool.size & (funcAlign - 1)
+	pool.size += uint32(sz)
+	p.Pcond = q
+}
+
+func regoff(ctxt *obj.Link, a *obj.Addr) uint32 {
+	ctxt.Instoffset = 0
+	aclass(ctxt, a)
+	return uint32(ctxt.Instoffset)
+}
+
+// Maximum PC-relative displacement.
+// The actual limit is ±2²⁰, but we are conservative
+// to avoid needing to recompute the literal pool flush points
+// as span-dependent jumps are enlarged.
+const maxPCDisp = 512 * 1024
+
+// ispcdisp reports whether v is a valid PC-relative displacement.
+func ispcdisp(v int32) bool {
+	return -maxPCDisp < v && v < maxPCDisp && v&3 == 0
+}
+
+func isaddcon(v int64) bool {
+	/* uimm12 or uimm24? */
+	if v < 0 {
+		return false
+	}
+	if (v & 0xFFF) == 0 {
+		v >>= 12
+	}
+	return v <= 0xFFF
+}
+
+// isbitcon returns whether a constant can be encoded into a logical instruction.
+// bitcon has a binary form of repetition of a bit sequence of length 2, 4, 8, 16, 32, or 64,
+// which itself is a rotate (w.r.t. the length of the unit) of a sequence of ones.
+// special cases: 0 and -1 are not bitcon.
+// this function needs to run against virtually all the constants, so it needs to be fast.
+// for this reason, bitcon testing and bitcon encoding are separate functions.
+func isbitcon(x uint64) bool {
+	if x == 1<<64-1 || x == 0 {
+		return false
+	}
+	// determine the period and sign-extend a unit to 64 bits
+	switch {
+	case x != x>>32|x<<32:
+		// period is 64
+		// nothing to do
+	case x != x>>16|x<<48:
+		// period is 32
+		x = uint64(int64(int32(x)))
+	case x != x>>8|x<<56:
+		// period is 16
+		x = uint64(int64(int16(x)))
+	case x != x>>4|x<<60:
+		// period is 8
+		x = uint64(int64(int8(x)))
+	default:
+		// period is 4 or 2, always true
+		// 0001, 0010, 0100, 1000 -- 0001 rotate
+		// 0011, 0110, 1100, 1001 -- 0011 rotate
+		// 0111, 1011, 1101, 1110 -- 0111 rotate
+		// 0101, 1010             -- 01   rotate, repeat
+		return true
+	}
+	return sequenceOfOnes(x) || sequenceOfOnes(^x)
+}
+
+// sequenceOfOnes tests whether a constant is a sequence of ones in binary, with leading and trailing zeros
+func sequenceOfOnes(x uint64) bool {
+	y := x & -x // lowest set bit of x. x is good iff x+y is a power of 2
+	y += x
+	return (y-1)&y == 0
+}
+
+// bitconEncode returns the encoding of a bitcon used in logical instructions
+// x is known to be a bitcon
+// a bitcon is a sequence of n ones at low bits (i.e. 1<<n-1), right rotated
+// by R bits, and repeated with period of 64, 32, 16, 8, 4, or 2.
+// it is encoded in logical instructions with 3 bitfields
+// N (1 bit) : R (6 bits) : S (6 bits), where
+// N=1           -- period=64
+// N=0, S=0xxxxx -- period=32
+// N=0, S=10xxxx -- period=16
+// N=0, S=110xxx -- period=8
+// N=0, S=1110xx -- period=4
+// N=0, S=11110x -- period=2
+// R is the shift amount, low bits of S = n-1
+func bitconEncode(x uint64, mode int) uint32 {
+	var period uint32
+	// determine the period and sign-extend a unit to 64 bits
+	switch {
+	case x != x>>32|x<<32:
+		period = 64
+	case x != x>>16|x<<48:
+		period = 32
+		x = uint64(int64(int32(x)))
+	case x != x>>8|x<<56:
+		period = 16
+		x = uint64(int64(int16(x)))
+	case x != x>>4|x<<60:
+		period = 8
+		x = uint64(int64(int8(x)))
+	case x != x>>2|x<<62:
+		period = 4
+		x = uint64(int64(x<<60) >> 60)
+	default:
+		period = 2
+		x = uint64(int64(x<<62) >> 62)
+	}
+	neg := false
+	if int64(x) < 0 {
+		x = ^x
+		neg = true
+	}
+	y := x & -x // lowest set bit of x.
+	s := log2(y)
+	n := log2(x+y) - s // x (or ^x) is a sequence of n ones left shifted by s bits
+	if neg {
+		// ^x is a sequence of n ones left shifted by s bits
+		// adjust n, s for x
+		s = n + s
+		n = period - n
+	}
+
+	N := uint32(0)
+	if mode == 64 && period == 64 {
+		N = 1
+	}
+	R := (period - s) & (period - 1) & uint32(mode-1) // shift amount of right rotate
+	S := (n - 1) | 63&^(period<<1-1)                  // low bits = #ones - 1, high bits encodes period
+	return N<<22 | R<<16 | S<<10
+}
+
+func log2(x uint64) uint32 {
+	if x == 0 {
+		panic("log2 of 0")
+	}
+	n := uint32(0)
+	if x >= 1<<32 {
+		x >>= 32
+		n += 32
+	}
+	if x >= 1<<16 {
+		x >>= 16
+		n += 16
+	}
+	if x >= 1<<8 {
+		x >>= 8
+		n += 8
+	}
+	if x >= 1<<4 {
+		x >>= 4
+		n += 4
+	}
+	if x >= 1<<2 {
+		x >>= 2
+		n += 2
+	}
+	if x >= 1<<1 {
+		x >>= 1
+		n += 1
+	}
+	return n
+}
+
+func autoclass(l int64) int {
+	if l < 0 {
+		if l >= -256 {
+			return C_NSAUTO
+		}
+		if l >= -512 && (l&7) == 0 {
+			return C_NPAUTO
+		}
+		return C_LAUTO
+	}
+
+	if l <= 255 {
+		return C_PSAUTO
+	}
+	if l <= 504 && (l&7) == 0 {
+		return C_PPAUTO
+	}
+	if l <= 4095 {
+		return C_UAUTO4K
+	}
+	if l <= 8190 && (l&1) == 0 {
+		return C_UAUTO8K
+	}
+	if l <= 16380 && (l&3) == 0 {
+		return C_UAUTO16K
+	}
+	if l <= 32760 && (l&7) == 0 {
+		return C_UAUTO32K
+	}
+	if l <= 65520 && (l&0xF) == 0 {
+		return C_UAUTO64K
+	}
+	return C_LAUTO
+}
+
+func oregclass(l int64) int {
+	if l == 0 {
+		return C_ZOREG
+	}
+	return autoclass(l) - C_NPAUTO + C_NPOREG
+}
+
+/*
+ * given an offset v and a class c (see above)
+ * return the offset value to use in the instruction,
+ * scaled if necessary
+ */
+func offsetshift(ctxt *obj.Link, v int64, c int) int64 {
+	s := 0
+	if c >= C_SEXT1 && c <= C_SEXT16 {
+		s = c - C_SEXT1
+	} else if c >= C_UAUTO4K && c <= C_UAUTO64K {
+		s = c - C_UAUTO4K
+	} else if c >= C_UOREG4K && c <= C_UOREG64K {
+		s = c - C_UOREG4K
+	}
+	vs := v >> uint(s)
+	if vs<<uint(s) != v {
+		ctxt.Diag("odd offset: %d\n%v", v, ctxt.Curp)
+	}
+	return vs
+}
+
+/*
+ * if v contains a single 16-bit value aligned
+ * on a 16-bit field, and thus suitable for movk/movn,
+ * return the field index 0 to 3; otherwise return -1
+ */
+func movcon(v int64) int {
+	for s := 0; s < 64; s += 16 {
+		if (uint64(v) &^ (uint64(0xFFFF) << uint(s))) == 0 {
+			return s / 16
+		}
+	}
+	return -1
+}
+
+func rclass(r int16) int {
+	switch {
+	case REG_R0 <= r && r <= REG_R30: // not 31
+		return C_REG
+	case r == REGZERO:
+		return C_ZCON
+	case REG_F0 <= r && r <= REG_F31:
+		return C_FREG
+	case REG_V0 <= r && r <= REG_V31:
+		return C_VREG
+	case COND_EQ <= r && r <= COND_NV:
+		return C_COND
+	case r == REGSP:
+		return C_RSP
+	case r&REG_EXT != 0:
+		return C_EXTREG
+	case r >= REG_SPECIAL:
+		return C_SPR
+	}
+	return C_GOK
+}
+
+func aclass(ctxt *obj.Link, a *obj.Addr) int {
+	switch a.Type {
+	case obj.TYPE_NONE:
+		return C_NONE
+
+	case obj.TYPE_REG:
+		return rclass(a.Reg)
+
+	case obj.TYPE_REGREG:
+		return C_PAIR
+
+	case obj.TYPE_SHIFT:
+		return C_SHIFT
+
+	case obj.TYPE_MEM:
+		switch a.Name {
+		case obj.NAME_EXTERN, obj.NAME_STATIC:
+			if a.Sym == nil {
+				break
+			}
+			ctxt.Instoffset = a.Offset
+			if a.Sym != nil { // use relocation
+				if a.Sym.Type == obj.STLSBSS {
+					if ctxt.Flag_shared {
+						return C_TLS_IE
+					} else {
+						return C_TLS_LE
+					}
+				}
+				return C_ADDR
+			}
+			return C_LEXT
+
+		case obj.NAME_GOTREF:
+			return C_GOTADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			return autoclass(ctxt.Instoffset)
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8
+			return autoclass(ctxt.Instoffset)
+
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			return oregclass(ctxt.Instoffset)
+		}
+		return C_GOK
+
+	case obj.TYPE_FCONST:
+		return C_FCON
+
+	case obj.TYPE_TEXTSIZE:
+		return C_TEXTSIZE
+
+	case obj.TYPE_CONST, obj.TYPE_ADDR:
+		switch a.Name {
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if a.Reg != 0 && a.Reg != REGZERO {
+				goto aconsize
+			}
+			v := ctxt.Instoffset
+			if v == 0 {
+				return C_ZCON
+			}
+			if isaddcon(v) {
+				if v <= 0xFFF {
+					if isbitcon(uint64(v)) {
+						return C_ABCON0
+					}
+					return C_ADDCON0
+				}
+				if isbitcon(uint64(v)) {
+					return C_ABCON
+				}
+				return C_ADDCON
+			}
+
+			t := movcon(v)
+			if t >= 0 {
+				if isbitcon(uint64(v)) {
+					return C_MBCON
+				}
+				return C_MOVCON
+			}
+
+			t = movcon(^v)
+			if t >= 0 {
+				if isbitcon(uint64(v)) {
+					return C_MBCON
+				}
+				return C_MOVCON
+			}
+
+			if isbitcon(uint64(v)) {
+				return C_BITCON
+			}
+
+			if uint64(v) == uint64(uint32(v)) || v == int64(int32(v)) {
+				return C_LCON
+			}
+			return C_VCON
+
+		case obj.NAME_EXTERN, obj.NAME_STATIC:
+			if a.Sym == nil {
+				break
+			}
+			if a.Sym.Type == obj.STLSBSS {
+				ctxt.Diag("taking address of TLS variable is not supported")
+			}
+			ctxt.Instoffset = a.Offset
+			return C_VCONADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			goto aconsize
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8
+			goto aconsize
+		}
+		return C_GOK
+
+	aconsize:
+		if isaddcon(ctxt.Instoffset) {
+			return C_AACON
+		}
+		return C_LACON
+
+	case obj.TYPE_BRANCH:
+		return C_SBRA
+	}
+
+	return C_GOK
+}
+
+func oclass(a *obj.Addr) int {
+	return int(a.Class) - 1
+}
+
+func oplook(ctxt *obj.Link, p *obj.Prog) *Optab {
+	a1 := int(p.Optab)
+	if a1 != 0 {
+		return &optab[a1-1]
+	}
+	a1 = int(p.From.Class)
+	if a1 == 0 {
+		a1 = aclass(ctxt, &p.From) + 1
+		p.From.Class = int8(a1)
+	}
+
+	a1--
+	a3 := int(p.To.Class)
+	if a3 == 0 {
+		a3 = aclass(ctxt, &p.To) + 1
+		p.To.Class = int8(a3)
+	}
+
+	a3--
+	a2 := C_NONE
+	if p.Reg != 0 {
+		a2 = rclass(p.Reg)
+	}
+
+	if false {
+		fmt.Printf("oplook %v %d %d %d\n", p.As, a1, a2, a3)
+		fmt.Printf("\t\t%d %d\n", p.From.Type, p.To.Type)
+	}
+
+	ops := oprange[p.As&obj.AMask]
+	c1 := &xcmp[a1]
+	c2 := &xcmp[a2]
+	c3 := &xcmp[a3]
+	c4 := &xcmp[p.Scond>>5]
+	for i := range ops {
+		op := &ops[i]
+		if (int(op.a2) == a2 || c2[op.a2]) && c4[op.scond>>5] && c1[op.a1] && c3[op.a3] {
+			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
+			return op
+		}
+	}
+
+	ctxt.Diag("illegal combination %v %v %v %v, %d %d", p, DRconv(a1), DRconv(a2), DRconv(a3), p.From.Type, p.To.Type)
+	prasm(p)
+	if ops == nil {
+		ops = optab
+	}
+	return &ops[0]
+}
+
+func cmp(a int, b int) bool {
+	if a == b {
+		return true
+	}
+	switch a {
+	case C_RSP:
+		if b == C_REG {
+			return true
+		}
+
+	case C_REG:
+		if b == C_ZCON {
+			return true
+		}
+
+	case C_ADDCON0:
+		if b == C_ZCON || b == C_ABCON0 {
+			return true
+		}
+
+	case C_ADDCON:
+		if b == C_ZCON || b == C_ABCON0 || b == C_ADDCON0 || b == C_ABCON {
+			return true
+		}
+
+	case C_BITCON:
+		if b == C_ABCON0 || b == C_ABCON || b == C_MBCON {
+			return true
+		}
+
+	case C_MOVCON:
+		if b == C_MBCON || b == C_ZCON || b == C_ADDCON0 {
+			return true
+		}
+
+	case C_LCON:
+		if b == C_ZCON || b == C_BITCON || b == C_ADDCON || b == C_ADDCON0 || b == C_ABCON || b == C_ABCON0 || b == C_MBCON || b == C_MOVCON {
+			return true
+		}
+
+	case C_VCON:
+		return cmp(C_LCON, b)
+
+	case C_LACON:
+		if b == C_AACON {
+			return true
+		}
+
+	case C_SEXT2:
+		if b == C_SEXT1 {
+			return true
+		}
+
+	case C_SEXT4:
+		if b == C_SEXT1 || b == C_SEXT2 {
+			return true
+		}
+
+	case C_SEXT8:
+		if b >= C_SEXT1 && b <= C_SEXT4 {
+			return true
+		}
+
+	case C_SEXT16:
+		if b >= C_SEXT1 && b <= C_SEXT8 {
+			return true
+		}
+
+	case C_LEXT:
+		if b >= C_SEXT1 && b <= C_SEXT16 {
+			return true
+		}
+
+	case C_PPAUTO:
+		if b == C_PSAUTO {
+			return true
+		}
+
+	case C_UAUTO4K:
+		if b == C_PSAUTO || b == C_PPAUTO {
+			return true
+		}
+
+	case C_UAUTO8K:
+		return cmp(C_UAUTO4K, b)
+
+	case C_UAUTO16K:
+		return cmp(C_UAUTO8K, b)
+
+	case C_UAUTO32K:
+		return cmp(C_UAUTO16K, b)
+
+	case C_UAUTO64K:
+		return cmp(C_UAUTO32K, b)
+
+	case C_NPAUTO:
+		return cmp(C_NSAUTO, b)
+
+	case C_LAUTO:
+		return cmp(C_NPAUTO, b) || cmp(C_UAUTO64K, b)
+
+	case C_PSOREG:
+		if b == C_ZOREG {
+			return true
+		}
+
+	case C_PPOREG:
+		if b == C_ZOREG || b == C_PSOREG {
+			return true
+		}
+
+	case C_UOREG4K:
+		if b == C_ZOREG || b == C_PSAUTO || b == C_PSOREG || b == C_PPAUTO || b == C_PPOREG {
+			return true
+		}
+
+	case C_UOREG8K:
+		return cmp(C_UOREG4K, b)
+
+	case C_UOREG16K:
+		return cmp(C_UOREG8K, b)
+
+	case C_UOREG32K:
+		return cmp(C_UOREG16K, b)
+
+	case C_UOREG64K:
+		return cmp(C_UOREG32K, b)
+
+	case C_NPOREG:
+		return cmp(C_NSOREG, b)
+
+	case C_LOREG:
+		return cmp(C_NPOREG, b) || cmp(C_UOREG64K, b)
+
+	case C_LBRA:
+		if b == C_SBRA {
+			return true
+		}
+	}
+
+	return false
+}
+
+type ocmp []Optab
+
+func (x ocmp) Len() int {
+	return len(x)
+}
+
+func (x ocmp) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}
+
+func (x ocmp) Less(i, j int) bool {
+	p1 := &x[i]
+	p2 := &x[j]
+	if p1.as != p2.as {
+		return p1.as < p2.as
+	}
+	if p1.a1 != p2.a1 {
+		return p1.a1 < p2.a1
+	}
+	if p1.a2 != p2.a2 {
+		return p1.a2 < p2.a2
+	}
+	if p1.a3 != p2.a3 {
+		return p1.a3 < p2.a3
+	}
+	if p1.scond != p2.scond {
+		return p1.scond < p2.scond
+	}
+	return false
+}
+
+func oprangeset(a obj.As, t []Optab) {
+	oprange[a&obj.AMask] = t
+}
+
+func buildop(ctxt *obj.Link) {
+	var n int
+	for i := 0; i < C_GOK; i++ {
+		for n = 0; n < C_GOK; n++ {
+			if cmp(n, i) {
+				xcmp[i][n] = true
+			}
+		}
+	}
+	for n = 0; optab[n].as != obj.AXXX; n++ {
+	}
+	sort.Sort(ocmp(optab[:n]))
+	for i := 0; i < n; i++ {
+		r := optab[i].as
+		start := i
+		for optab[i].as == r {
+			i++
+		}
+		t := optab[start:i]
+		i--
+		oprangeset(r, t)
+		switch r {
+		default:
+			ctxt.Diag("unknown op in build: %v", r)
+			log.Fatalf("bad code")
+
+		case AADD:
+			oprangeset(AADDS, t)
+			oprangeset(ASUB, t)
+			oprangeset(ASUBS, t)
+			oprangeset(AADDW, t)
+			oprangeset(AADDSW, t)
+			oprangeset(ASUBW, t)
+			oprangeset(ASUBSW, t)
+
+		case AAND: /* logical immediate, logical shifted register */
+			oprangeset(AANDS, t)
+
+			oprangeset(AANDSW, t)
+			oprangeset(AANDW, t)
+			oprangeset(AEOR, t)
+			oprangeset(AEORW, t)
+			oprangeset(AORR, t)
+			oprangeset(AORRW, t)
+
+		case ABIC: /* only logical shifted register */
+			oprangeset(ABICS, t)
+
+			oprangeset(ABICSW, t)
+			oprangeset(ABICW, t)
+			oprangeset(AEON, t)
+			oprangeset(AEONW, t)
+			oprangeset(AORN, t)
+			oprangeset(AORNW, t)
+
+		case ANEG:
+			oprangeset(ANEGS, t)
+			oprangeset(ANEGSW, t)
+			oprangeset(ANEGW, t)
+
+		case AADC: /* rn=Rd */
+			oprangeset(AADCW, t)
+
+			oprangeset(AADCS, t)
+			oprangeset(AADCSW, t)
+			oprangeset(ASBC, t)
+			oprangeset(ASBCW, t)
+			oprangeset(ASBCS, t)
+			oprangeset(ASBCSW, t)
+
+		case ANGC: /* rn=REGZERO */
+			oprangeset(ANGCW, t)
+
+			oprangeset(ANGCS, t)
+			oprangeset(ANGCSW, t)
+
+		case ACMP:
+			oprangeset(ACMPW, t)
+			oprangeset(ACMN, t)
+			oprangeset(ACMNW, t)
+
+		case ATST:
+			oprangeset(ATSTW, t)
+
+			/* register/register, and shifted */
+		case AMVN:
+			oprangeset(AMVNW, t)
+
+		case AMOVK:
+			oprangeset(AMOVKW, t)
+			oprangeset(AMOVN, t)
+			oprangeset(AMOVNW, t)
+			oprangeset(AMOVZ, t)
+			oprangeset(AMOVZW, t)
+
+		case ABEQ:
+			oprangeset(ABNE, t)
+			oprangeset(ABCS, t)
+			oprangeset(ABHS, t)
+			oprangeset(ABCC, t)
+			oprangeset(ABLO, t)
+			oprangeset(ABMI, t)
+			oprangeset(ABPL, t)
+			oprangeset(ABVS, t)
+			oprangeset(ABVC, t)
+			oprangeset(ABHI, t)
+			oprangeset(ABLS, t)
+			oprangeset(ABGE, t)
+			oprangeset(ABLT, t)
+			oprangeset(ABGT, t)
+			oprangeset(ABLE, t)
+
+		case ALSL:
+			oprangeset(ALSLW, t)
+			oprangeset(ALSR, t)
+			oprangeset(ALSRW, t)
+			oprangeset(AASR, t)
+			oprangeset(AASRW, t)
+			oprangeset(AROR, t)
+			oprangeset(ARORW, t)
+
+		case ACLS:
+			oprangeset(ACLSW, t)
+			oprangeset(ACLZ, t)
+			oprangeset(ACLZW, t)
+			oprangeset(ARBIT, t)
+			oprangeset(ARBITW, t)
+			oprangeset(AREV, t)
+			oprangeset(AREVW, t)
+			oprangeset(AREV16, t)
+			oprangeset(AREV16W, t)
+			oprangeset(AREV32, t)
+
+		case ASDIV:
+			oprangeset(ASDIVW, t)
+			oprangeset(AUDIV, t)
+			oprangeset(AUDIVW, t)
+			oprangeset(ACRC32B, t)
+			oprangeset(ACRC32CB, t)
+			oprangeset(ACRC32CH, t)
+			oprangeset(ACRC32CW, t)
+			oprangeset(ACRC32CX, t)
+			oprangeset(ACRC32H, t)
+			oprangeset(ACRC32W, t)
+			oprangeset(ACRC32X, t)
+
+		case AMADD:
+			oprangeset(AMADDW, t)
+			oprangeset(AMSUB, t)
+			oprangeset(AMSUBW, t)
+			oprangeset(ASMADDL, t)
+			oprangeset(ASMSUBL, t)
+			oprangeset(AUMADDL, t)
+			oprangeset(AUMSUBL, t)
+
+		case AREM:
+			oprangeset(AREMW, t)
+			oprangeset(AUREM, t)
+			oprangeset(AUREMW, t)
+
+		case AMUL:
+			oprangeset(AMULW, t)
+			oprangeset(AMNEG, t)
+			oprangeset(AMNEGW, t)
+			oprangeset(ASMNEGL, t)
+			oprangeset(ASMULL, t)
+			oprangeset(ASMULH, t)
+			oprangeset(AUMNEGL, t)
+			oprangeset(AUMULH, t)
+			oprangeset(AUMULL, t)
+
+		case AMOVB:
+			oprangeset(AMOVBU, t)
+
+		case AMOVH:
+			oprangeset(AMOVHU, t)
+
+		case AMOVW:
+			oprangeset(AMOVWU, t)
+
+		case ABFM:
+			oprangeset(ABFMW, t)
+			oprangeset(ASBFM, t)
+			oprangeset(ASBFMW, t)
+			oprangeset(AUBFM, t)
+			oprangeset(AUBFMW, t)
+
+		case ABFI:
+			oprangeset(ABFIW, t)
+			oprangeset(ABFXIL, t)
+			oprangeset(ABFXILW, t)
+			oprangeset(ASBFIZ, t)
+			oprangeset(ASBFIZW, t)
+			oprangeset(ASBFX, t)
+			oprangeset(ASBFXW, t)
+			oprangeset(AUBFIZ, t)
+			oprangeset(AUBFIZW, t)
+			oprangeset(AUBFX, t)
+			oprangeset(AUBFXW, t)
+
+		case AEXTR:
+			oprangeset(AEXTRW, t)
+
+		case ASXTB:
+			oprangeset(ASXTBW, t)
+			oprangeset(ASXTH, t)
+			oprangeset(ASXTHW, t)
+			oprangeset(ASXTW, t)
+			oprangeset(AUXTB, t)
+			oprangeset(AUXTH, t)
+			oprangeset(AUXTW, t)
+			oprangeset(AUXTBW, t)
+			oprangeset(AUXTHW, t)
+
+		case ACCMN:
+			oprangeset(ACCMNW, t)
+			oprangeset(ACCMP, t)
+			oprangeset(ACCMPW, t)
+
+		case ACSEL:
+			oprangeset(ACSELW, t)
+			oprangeset(ACSINC, t)
+			oprangeset(ACSINCW, t)
+			oprangeset(ACSINV, t)
+			oprangeset(ACSINVW, t)
+			oprangeset(ACSNEG, t)
+			oprangeset(ACSNEGW, t)
+
+			// aliases Rm=Rn, !cond
+			oprangeset(ACINC, t)
+
+			oprangeset(ACINCW, t)
+			oprangeset(ACINV, t)
+			oprangeset(ACINVW, t)
+			oprangeset(ACNEG, t)
+			oprangeset(ACNEGW, t)
+
+			// aliases, Rm=Rn=REGZERO, !cond
+		case ACSET:
+			oprangeset(ACSETW, t)
+
+			oprangeset(ACSETM, t)
+			oprangeset(ACSETMW, t)
+
+		case AMOVD,
+			AMOVBU,
+			AB,
+			ABL,
+			AWORD,
+			ADWORD,
+			obj.ARET,
+			obj.ATEXT,
+			ASTP,
+			ALDP:
+			break
+
+		case AERET:
+			oprangeset(AWFE, t)
+			oprangeset(AWFI, t)
+			oprangeset(AYIELD, t)
+			oprangeset(ASEV, t)
+			oprangeset(ASEVL, t)
+			oprangeset(ADRPS, t)
+
+		case ACBZ:
+			oprangeset(ACBZW, t)
+			oprangeset(ACBNZ, t)
+			oprangeset(ACBNZW, t)
+
+		case ATBZ:
+			oprangeset(ATBNZ, t)
+
+		case AADR, AADRP:
+			break
+
+		case ACLREX:
+			break
+
+		case ASVC:
+			oprangeset(AHLT, t)
+			oprangeset(AHVC, t)
+			oprangeset(ASMC, t)
+			oprangeset(ABRK, t)
+			oprangeset(ADCPS1, t)
+			oprangeset(ADCPS2, t)
+			oprangeset(ADCPS3, t)
+
+		case AFADDS:
+			oprangeset(AFADDD, t)
+			oprangeset(AFSUBS, t)
+			oprangeset(AFSUBD, t)
+			oprangeset(AFMULS, t)
+			oprangeset(AFMULD, t)
+			oprangeset(AFNMULS, t)
+			oprangeset(AFNMULD, t)
+			oprangeset(AFDIVS, t)
+			oprangeset(AFMAXD, t)
+			oprangeset(AFMAXS, t)
+			oprangeset(AFMIND, t)
+			oprangeset(AFMINS, t)
+			oprangeset(AFMAXNMD, t)
+			oprangeset(AFMAXNMS, t)
+			oprangeset(AFMINNMD, t)
+			oprangeset(AFMINNMS, t)
+			oprangeset(AFDIVD, t)
+
+		case AFCVTSD:
+			oprangeset(AFCVTDS, t)
+			oprangeset(AFABSD, t)
+			oprangeset(AFABSS, t)
+			oprangeset(AFNEGD, t)
+			oprangeset(AFNEGS, t)
+			oprangeset(AFSQRTD, t)
+			oprangeset(AFSQRTS, t)
+			oprangeset(AFRINTNS, t)
+			oprangeset(AFRINTND, t)
+			oprangeset(AFRINTPS, t)
+			oprangeset(AFRINTPD, t)
+			oprangeset(AFRINTMS, t)
+			oprangeset(AFRINTMD, t)
+			oprangeset(AFRINTZS, t)
+			oprangeset(AFRINTZD, t)
+			oprangeset(AFRINTAS, t)
+			oprangeset(AFRINTAD, t)
+			oprangeset(AFRINTXS, t)
+			oprangeset(AFRINTXD, t)
+			oprangeset(AFRINTIS, t)
+			oprangeset(AFRINTID, t)
+			oprangeset(AFCVTDH, t)
+			oprangeset(AFCVTHS, t)
+			oprangeset(AFCVTHD, t)
+			oprangeset(AFCVTSH, t)
+
+		case AFCMPS:
+			oprangeset(AFCMPD, t)
+			oprangeset(AFCMPES, t)
+			oprangeset(AFCMPED, t)
+
+		case AFCCMPS:
+			oprangeset(AFCCMPD, t)
+			oprangeset(AFCCMPES, t)
+			oprangeset(AFCCMPED, t)
+
+		case AFCSELD:
+			oprangeset(AFCSELS, t)
+
+		case AFMOVS, AFMOVD:
+			break
+
+		case AFCVTZSD:
+			oprangeset(AFCVTZSDW, t)
+			oprangeset(AFCVTZSS, t)
+			oprangeset(AFCVTZSSW, t)
+			oprangeset(AFCVTZUD, t)
+			oprangeset(AFCVTZUDW, t)
+			oprangeset(AFCVTZUS, t)
+			oprangeset(AFCVTZUSW, t)
+
+		case ASCVTFD:
+			oprangeset(ASCVTFS, t)
+			oprangeset(ASCVTFWD, t)
+			oprangeset(ASCVTFWS, t)
+			oprangeset(AUCVTFD, t)
+			oprangeset(AUCVTFS, t)
+			oprangeset(AUCVTFWD, t)
+			oprangeset(AUCVTFWS, t)
+
+		case ASYS:
+			oprangeset(AAT, t)
+			oprangeset(ADC, t)
+			oprangeset(AIC, t)
+			oprangeset(ATLBI, t)
+
+		case ASYSL, AHINT:
+			break
+
+		case ADMB:
+			oprangeset(ADSB, t)
+			oprangeset(AISB, t)
+
+		case AMRS, AMSR:
+			break
+
+		case ALDAR:
+			oprangeset(ALDARW, t)
+			fallthrough
+
+		case ALDXR:
+			oprangeset(ALDXRB, t)
+			oprangeset(ALDXRH, t)
+			oprangeset(ALDXRW, t)
+
+		case ALDAXR:
+			oprangeset(ALDAXRB, t)
+			oprangeset(ALDAXRH, t)
+			oprangeset(ALDAXRW, t)
+
+		case ALDXP:
+			oprangeset(ALDXPW, t)
+
+		case ASTLR:
+			oprangeset(ASTLRW, t)
+
+		case ASTXR:
+			oprangeset(ASTXRB, t)
+			oprangeset(ASTXRH, t)
+			oprangeset(ASTXRW, t)
+
+		case ASTLXR:
+			oprangeset(ASTLXRB, t)
+			oprangeset(ASTLXRH, t)
+			oprangeset(ASTLXRW, t)
+
+		case ASTXP:
+			oprangeset(ASTXPW, t)
+
+		case AAESD:
+			oprangeset(AAESE, t)
+			oprangeset(AAESMC, t)
+			oprangeset(AAESIMC, t)
+			oprangeset(ASHA1H, t)
+			oprangeset(ASHA1SU1, t)
+			oprangeset(ASHA256SU0, t)
+
+		case ASHA1C:
+			oprangeset(ASHA1P, t)
+			oprangeset(ASHA1M, t)
+			oprangeset(ASHA1SU0, t)
+			oprangeset(ASHA256H, t)
+			oprangeset(ASHA256H2, t)
+			oprangeset(ASHA256SU1, t)
+
+		case obj.ANOP,
+			obj.AUNDEF,
+			obj.AUSEFIELD,
+			obj.AFUNCDATA,
+			obj.APCDATA,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			break
+		}
+	}
+}
+
+func chipfloat7(ctxt *obj.Link, e float64) int {
+	ei := math.Float64bits(e)
+	l := uint32(int32(ei))
+	h := uint32(int32(ei >> 32))
+
+	if l != 0 || h&0xffff != 0 {
+		return -1
+	}
+	h1 := h & 0x7fc00000
+	if h1 != 0x40000000 && h1 != 0x3fc00000 {
+		return -1
+	}
+	n := 0
+
+	// sign bit (a)
+	if h&0x80000000 != 0 {
+		n |= 1 << 7
+	}
+
+	// exp sign bit (b)
+	if h1 == 0x3fc00000 {
+		n |= 1 << 6
+	}
+
+	// rest of exp and mantissa (cd-efgh)
+	n |= int((h >> 16) & 0x3f)
+
+	//print("match %.8lux %.8lux %d\n", l, h, n);
+	return n
+}
+
+/* form offset parameter to SYS; special register number */
+func SYSARG5(op0 int, op1 int, Cn int, Cm int, op2 int) int {
+	return op0<<19 | op1<<16 | Cn<<12 | Cm<<8 | op2<<5
+}
+
+func SYSARG4(op1 int, Cn int, Cm int, op2 int) int {
+	return SYSARG5(0, op1, Cn, Cm, op2)
+}
+
+func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
+	o1 := uint32(0)
+	o2 := uint32(0)
+	o3 := uint32(0)
+	o4 := uint32(0)
+	o5 := uint32(0)
+	if false { /*debug['P']*/
+		fmt.Printf("%x: %v\ttype %d\n", uint32(p.Pc), p, o.type_)
+	}
+	switch o.type_ {
+	default:
+		ctxt.Diag("unknown asm %d", o.type_)
+		prasm(p)
+
+	case 0: /* pseudo ops */
+		break
+
+	case 1: /* op Rm,[Rn],Rd; default Rn=Rd -> op Rm<<0,[Rn,]Rd (shifted register) */
+		o1 = oprrr(ctxt, p.As)
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = REGZERO
+		}
+		if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 2: /* add/sub $(uimm12|uimm24)[,R],R; cmp $(uimm12|uimm24),R */
+		o1 = opirr(ctxt, p.As)
+
+		rt := int(p.To.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			if (o1 & Sbit) == 0 {
+				ctxt.Diag("ineffective ZR destination\n%v", p)
+			}
+			rt = REGZERO
+		}
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		v := int32(regoff(ctxt, &p.From))
+		o1 = oaddi(ctxt, int32(o1), v, r, rt)
+
+	case 3: /* op R<<n[,R],R (shifted register) */
+		o1 = oprrr(ctxt, p.As)
+
+		o1 |= uint32(p.From.Offset) /* includes reg, op, etc */
+		rt := int(p.To.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = REGZERO
+		}
+		r := int(p.Reg)
+		if p.As == AMVN || p.As == AMVNW {
+			r = REGZERO
+		} else if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 4: /* mov $addcon, R; mov $recon, R; mov $racon, R */
+		o1 = opirr(ctxt, p.As)
+
+		rt := int(p.To.Reg)
+		r := int(o.param)
+		if r == 0 {
+			r = REGZERO
+		} else if r == REGFROM {
+			r = int(p.From.Reg)
+		}
+		if r == 0 {
+			r = REGSP
+		}
+		v := int32(regoff(ctxt, &p.From))
+		if (v & 0xFFF000) != 0 {
+			v >>= 12
+			o1 |= 1 << 22 /* shift, by 12 */
+		}
+
+		o1 |= ((uint32(v) & 0xFFF) << 10) | (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 5: /* b s; bl s */
+		o1 = opbra(ctxt, p.As)
+
+		if p.To.Sym == nil {
+			o1 |= uint32(brdist(ctxt, p, 0, 26, 2))
+			break
+		}
+
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Add = p.To.Offset
+		rel.Type = obj.R_CALLARM64
+
+	case 6: /* b ,O(R); bl ,O(R) */
+		o1 = opbrr(ctxt, p.As)
+
+		o1 |= uint32(p.To.Reg&31) << 5
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 0
+		rel.Type = obj.R_CALLIND
+
+	case 7: /* beq s */
+		o1 = opbra(ctxt, p.As)
+
+		o1 |= uint32(brdist(ctxt, p, 0, 19, 2) << 5)
+
+	case 8: /* lsl $c,[R],R -> ubfm $(W-1)-c,$(-c MOD (W-1)),Rn,Rd */
+		rt := int(p.To.Reg)
+
+		rf := int(p.Reg)
+		if rf == 0 {
+			rf = rt
+		}
+		v := int32(p.From.Offset)
+		switch p.As {
+		case AASR:
+			o1 = opbfm(ctxt, ASBFM, int(v), 63, rf, rt)
+
+		case AASRW:
+			o1 = opbfm(ctxt, ASBFMW, int(v), 31, rf, rt)
+
+		case ALSL:
+			o1 = opbfm(ctxt, AUBFM, int((64-v)&63), int(63-v), rf, rt)
+
+		case ALSLW:
+			o1 = opbfm(ctxt, AUBFMW, int((32-v)&31), int(31-v), rf, rt)
+
+		case ALSR:
+			o1 = opbfm(ctxt, AUBFM, int(v), 63, rf, rt)
+
+		case ALSRW:
+			o1 = opbfm(ctxt, AUBFMW, int(v), 31, rf, rt)
+
+		case AROR:
+			o1 = opextr(ctxt, AEXTR, v, rf, rf, rt)
+
+		case ARORW:
+			o1 = opextr(ctxt, AEXTRW, v, rf, rf, rt)
+
+		default:
+			ctxt.Diag("bad shift $con\n%v", ctxt.Curp)
+			break
+		}
+
+	case 9: /* lsl Rm,[Rn],Rd -> lslv Rm, Rn, Rd */
+		o1 = oprrr(ctxt, p.As)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 |= (uint32(p.From.Reg&31) << 16) | (uint32(r&31) << 5) | uint32(p.To.Reg&31)
+
+	case 10: /* brk/hvc/.../svc [$con] */
+		o1 = opimm(ctxt, p.As)
+
+		if p.To.Type != obj.TYPE_NONE {
+			o1 |= uint32((p.To.Offset & 0xffff) << 5)
+		}
+
+	case 11: /* dword */
+		aclass(ctxt, &p.To)
+
+		o1 = uint32(ctxt.Instoffset)
+		o2 = uint32(ctxt.Instoffset >> 32)
+		if p.To.Sym != nil {
+			rel := obj.Addrel(ctxt.Cursym)
+			rel.Off = int32(ctxt.Pc)
+			rel.Siz = 8
+			rel.Sym = p.To.Sym
+			rel.Add = p.To.Offset
+			rel.Type = obj.R_ADDR
+			o2 = 0
+			o1 = o2
+		}
+
+	case 12: /* movT $vcon, reg */
+		o1 = omovlit(ctxt, p.As, p, &p.From, int(p.To.Reg))
+
+	case 13: /* addop $vcon, [R], R (64 bit literal); cmp $lcon,R -> addop $lcon,R, ZR */
+		o1 = omovlit(ctxt, AMOVD, p, &p.From, REGTMP)
+
+		if !(o1 != 0) {
+			break
+		}
+		rt := int(p.To.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = REGZERO
+		}
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		if p.To.Type != obj.TYPE_NONE && (p.To.Reg == REGSP || r == REGSP) {
+			o2 = opxrrr(ctxt, p.As)
+			o2 |= REGTMP & 31 << 16
+			o2 |= LSL0_64
+		} else {
+			o2 = oprrr(ctxt, p.As)
+			o2 |= REGTMP & 31 << 16 /* shift is 0 */
+		}
+
+		o2 |= uint32(r&31) << 5
+		o2 |= uint32(rt & 31)
+
+	case 14: /* word */
+		if aclass(ctxt, &p.To) == C_ADDR {
+			ctxt.Diag("address constant needs DWORD\n%v", p)
+		}
+		o1 = uint32(ctxt.Instoffset)
+		if p.To.Sym != nil {
+			// This case happens with words generated
+			// in the PC stream as part of the literal pool.
+			rel := obj.Addrel(ctxt.Cursym)
+
+			rel.Off = int32(ctxt.Pc)
+			rel.Siz = 4
+			rel.Sym = p.To.Sym
+			rel.Add = p.To.Offset
+			rel.Type = obj.R_ADDR
+			o1 = 0
+		}
+
+	case 15: /* mul/mneg/umulh/umull r,[r,]r; madd/msub Rm,Rn,Ra,Rd */
+		o1 = oprrr(ctxt, p.As)
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		var r int
+		var ra int
+		if p.From3Type() == obj.TYPE_REG {
+			r = int(p.From3.Reg)
+			ra = int(p.Reg)
+			if ra == 0 {
+				ra = REGZERO
+			}
+		} else {
+			r = int(p.Reg)
+			if r == 0 {
+				r = rt
+			}
+			ra = REGZERO
+		}
+
+		o1 |= (uint32(rf&31) << 16) | (uint32(ra&31) << 10) | (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 16: /* XremY R[,R],R -> XdivY; XmsubY */
+		o1 = oprrr(ctxt, p.As)
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | REGTMP&31
+		o2 = oprrr(ctxt, AMSUBW)
+		o2 |= o1 & (1 << 31) /* same size */
+		o2 |= (uint32(rf&31) << 16) | (uint32(r&31) << 10) | (REGTMP & 31 << 5) | uint32(rt&31)
+
+	case 17: /* op Rm,[Rn],Rd; default Rn=ZR */
+		o1 = oprrr(ctxt, p.As)
+
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = REGZERO
+		}
+		if r == 0 {
+			r = REGZERO
+		}
+		o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 18: /* csel cond,Rn,Rm,Rd; cinc/cinv/cneg cond,Rn,Rd; cset cond,Rd */
+		o1 = oprrr(ctxt, p.As)
+
+		cond := int(p.From.Reg)
+		r := int(p.Reg)
+		var rf int
+		if r != 0 {
+			if p.From3Type() == obj.TYPE_NONE {
+				/* CINC/CINV/CNEG */
+				rf = r
+
+				cond ^= 1
+			} else {
+				rf = int(p.From3.Reg) /* CSEL */
+			}
+		} else {
+			/* CSET */
+			if p.From3Type() != obj.TYPE_NONE {
+				ctxt.Diag("invalid combination\n%v", p)
+			}
+			rf = REGZERO
+			r = rf
+			cond ^= 1
+		}
+
+		rt := int(p.To.Reg)
+		o1 |= (uint32(rf&31) << 16) | (uint32(cond&31) << 12) | (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 19: /* CCMN cond, (Rm|uimm5),Rn, uimm4 -> ccmn Rn,Rm,uimm4,cond */
+		nzcv := int(p.To.Offset)
+
+		cond := int(p.From.Reg)
+		var rf int
+		if p.From3.Type == obj.TYPE_REG {
+			o1 = oprrr(ctxt, p.As)
+			rf = int(p.From3.Reg) /* Rm */
+		} else {
+			o1 = opirr(ctxt, p.As)
+			rf = int(p.From3.Offset & 0x1F)
+		}
+
+		o1 |= (uint32(rf&31) << 16) | (uint32(cond) << 12) | (uint32(p.Reg&31) << 5) | uint32(nzcv)
+
+	case 20: /* movT R,O(R) -> strT */
+		v := int32(regoff(ctxt, &p.To))
+		sz := int32(1 << uint(movesize(p.As)))
+
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		if v < 0 || v%sz != 0 { /* unscaled 9-bit signed */
+			o1 = olsr9s(ctxt, int32(opstr9(ctxt, p.As)), v, r, int(p.From.Reg))
+		} else {
+			v = int32(offsetshift(ctxt, int64(v), int(o.a3)))
+			o1 = olsr12u(ctxt, int32(opstr12(ctxt, p.As)), v, r, int(p.From.Reg))
+		}
+
+	case 21: /* movT O(R),R -> ldrT */
+		v := int32(regoff(ctxt, &p.From))
+		sz := int32(1 << uint(movesize(p.As)))
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		if v < 0 || v%sz != 0 { /* unscaled 9-bit signed */
+			o1 = olsr9s(ctxt, int32(opldr9(ctxt, p.As)), v, r, int(p.To.Reg))
+		} else {
+			v = int32(offsetshift(ctxt, int64(v), int(o.a1)))
+			//print("offset=%lld v=%ld a1=%d\n", instoffset, v, o->a1);
+			o1 = olsr12u(ctxt, int32(opldr12(ctxt, p.As)), v, r, int(p.To.Reg))
+		}
+
+	case 22: /* movT (R)O!,R; movT O(R)!, R -> ldrT */
+		v := int32(p.From.Offset)
+
+		if v < -256 || v > 255 {
+			ctxt.Diag("offset out of range\n%v", p)
+		}
+		o1 = opldrpp(ctxt, p.As)
+		if o.scond == C_XPOST {
+			o1 |= 1 << 10
+		} else {
+			o1 |= 3 << 10
+		}
+		o1 |= ((uint32(v) & 0x1FF) << 12) | (uint32(p.From.Reg&31) << 5) | uint32(p.To.Reg&31)
+
+	case 23: /* movT R,(R)O!; movT O(R)!, R -> strT */
+		v := int32(p.To.Offset)
+
+		if v < -256 || v > 255 {
+			ctxt.Diag("offset out of range\n%v", p)
+		}
+		o1 = LD2STR(opldrpp(ctxt, p.As))
+		if o.scond == C_XPOST {
+			o1 |= 1 << 10
+		} else {
+			o1 |= 3 << 10
+		}
+		o1 |= ((uint32(v) & 0x1FF) << 12) | (uint32(p.To.Reg&31) << 5) | uint32(p.From.Reg&31)
+
+	case 24: /* mov/mvn Rs,Rd -> add $0,Rs,Rd or orr Rs,ZR,Rd */
+		rf := int(p.From.Reg)
+		rt := int(p.To.Reg)
+		s := rf == REGSP || rt == REGSP
+		if p.As == AMVN || p.As == AMVNW {
+			if s {
+				ctxt.Diag("illegal SP reference\n%v", p)
+			}
+			o1 = oprrr(ctxt, p.As)
+			o1 |= (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31)
+		} else if s {
+			o1 = opirr(ctxt, p.As)
+			o1 |= (uint32(rf&31) << 5) | uint32(rt&31)
+		} else {
+			o1 = oprrr(ctxt, p.As)
+			o1 |= (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31)
+		}
+
+	case 25: /* negX Rs, Rd -> subX Rs<<0, ZR, Rd */
+		o1 = oprrr(ctxt, p.As)
+
+		rf := int(p.From.Reg)
+		if rf == C_NONE {
+			rf = int(p.To.Reg)
+		}
+		rt := int(p.To.Reg)
+		o1 |= (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31)
+
+	case 26: /* negX Rm<<s, Rd -> subX Rm<<s, ZR, Rd */
+		o1 = oprrr(ctxt, p.As)
+
+		o1 |= uint32(p.From.Offset) /* includes reg, op, etc */
+		rt := int(p.To.Reg)
+		o1 |= (REGZERO & 31 << 5) | uint32(rt&31)
+
+	case 27: /* op Rm<<n[,Rn],Rd (extended register) */
+		o1 = opxrrr(ctxt, p.As)
+
+		if (p.From.Reg-obj.RBaseARM64)&REG_EXT != 0 {
+			ctxt.Diag("extended register not implemented\n%v", p)
+			// o1 |= uint32(p.From.Offset) /* includes reg, op, etc */
+		} else {
+			o1 |= uint32(p.From.Reg&31) << 16
+		}
+		rt := int(p.To.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = REGZERO
+		}
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 28: /* logop $vcon, [R], R (64 bit literal) */
+		o1 = omovlit(ctxt, AMOVD, p, &p.From, REGTMP)
+
+		if !(o1 != 0) {
+			break
+		}
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o2 = oprrr(ctxt, p.As)
+		o2 |= REGTMP & 31 << 16 /* shift is 0 */
+		o2 |= uint32(r&31) << 5
+		o2 |= uint32(p.To.Reg & 31)
+
+	case 29: /* op Rn, Rd */
+		fc := aclass(ctxt, &p.From)
+		tc := aclass(ctxt, &p.To)
+		if (p.As == AFMOVD || p.As == AFMOVS) && (fc == C_REG || fc == C_ZCON || tc == C_REG || tc == C_ZCON) {
+			// FMOV Rx, Fy or FMOV Fy, Rx
+			o1 = FPCVTI(0, 0, 0, 0, 6)
+			if p.As == AFMOVD {
+				o1 |= 1<<31 | 1<<22 // 64-bit
+			}
+			if fc == C_REG || fc == C_ZCON {
+				o1 |= 1 << 16 // FMOV Rx, Fy
+			}
+		} else {
+			o1 = oprrr(ctxt, p.As)
+		}
+		o1 |= uint32(p.From.Reg&31)<<5 | uint32(p.To.Reg&31)
+
+	case 30: /* movT R,L(R) -> strT */
+		s := movesize(o.as)
+
+		if s < 0 {
+			ctxt.Diag("unexpected long move, op %v tab %v\n%v", p.As, o.as, p)
+		}
+		v := int32(regoff(ctxt, &p.To))
+		if v < 0 {
+			ctxt.Diag("negative large offset\n%v", p)
+		}
+		if (v & ((1 << uint(s)) - 1)) != 0 {
+			ctxt.Diag("misaligned offset\n%v", p)
+		}
+		hi := v - (v & (0xFFF << uint(s)))
+		if (hi & 0xFFF) != 0 {
+			ctxt.Diag("internal: miscalculated offset %d [%d]\n%v", v, s, p)
+		}
+
+		//fprint(2, "v=%ld (%#lux) s=%d hi=%ld (%#lux) v'=%ld (%#lux)\n", v, v, s, hi, hi, ((v-hi)>>s)&0xFFF, ((v-hi)>>s)&0xFFF);
+		r := int(p.To.Reg)
+
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = oaddi(ctxt, int32(opirr(ctxt, AADD)), hi, r, REGTMP)
+		o2 = olsr12u(ctxt, int32(opstr12(ctxt, p.As)), ((v-hi)>>uint(s))&0xFFF, REGTMP, int(p.From.Reg))
+
+	case 31: /* movT L(R), R -> ldrT */
+		s := movesize(o.as)
+
+		if s < 0 {
+			ctxt.Diag("unexpected long move, op %v tab %v\n%v", p.As, o.as, p)
+		}
+		v := int32(regoff(ctxt, &p.From))
+		if v < 0 {
+			ctxt.Diag("negative large offset\n%v", p)
+		}
+		if (v & ((1 << uint(s)) - 1)) != 0 {
+			ctxt.Diag("misaligned offset\n%v", p)
+		}
+		hi := v - (v & (0xFFF << uint(s)))
+		if (hi & 0xFFF) != 0 {
+			ctxt.Diag("internal: miscalculated offset %d [%d]\n%v", v, s, p)
+		}
+
+		//fprint(2, "v=%ld (%#lux) s=%d hi=%ld (%#lux) v'=%ld (%#lux)\n", v, v, s, hi, hi, ((v-hi)>>s)&0xFFF, ((v-hi)>>s)&0xFFF);
+		r := int(p.From.Reg)
+
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = oaddi(ctxt, int32(opirr(ctxt, AADD)), hi, r, REGTMP)
+		o2 = olsr12u(ctxt, int32(opldr12(ctxt, p.As)), ((v-hi)>>uint(s))&0xFFF, REGTMP, int(p.To.Reg))
+
+	case 32: /* mov $con, R -> movz/movn */
+		o1 = omovconst(ctxt, p.As, p, &p.From, int(p.To.Reg))
+
+	case 33: /* movk $uimm16 << pos */
+		o1 = opirr(ctxt, p.As)
+
+		d := p.From.Offset
+		if (d >> 16) != 0 {
+			ctxt.Diag("requires uimm16\n%v", p)
+		}
+		s := 0
+		if p.From3Type() != obj.TYPE_NONE {
+			if p.From3.Type != obj.TYPE_CONST {
+				ctxt.Diag("missing bit position\n%v", p)
+			}
+			s = int(p.From3.Offset / 16)
+			if (s*16&0xF) != 0 || s >= 4 || (o1&S64) == 0 && s >= 2 {
+				ctxt.Diag("illegal bit position\n%v", p)
+			}
+		}
+
+		rt := int(p.To.Reg)
+		o1 |= uint32(((d & 0xFFFF) << 5) | int64((uint32(s)&3)<<21) | int64(rt&31))
+
+	case 34: /* mov $lacon,R */
+		o1 = omovlit(ctxt, AMOVD, p, &p.From, REGTMP)
+
+		if !(o1 != 0) {
+			break
+		}
+		o2 = opxrrr(ctxt, AADD)
+		o2 |= REGTMP & 31 << 16
+		o2 |= LSL0_64
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 |= uint32(r&31) << 5
+		o2 |= uint32(p.To.Reg & 31)
+
+	case 35: /* mov SPR,R -> mrs */
+		o1 = oprrr(ctxt, AMRS)
+
+		v := int32(p.From.Offset)
+		if (o1 & uint32(v&^(3<<19))) != 0 {
+			ctxt.Diag("MRS register value overlap\n%v", p)
+		}
+		o1 |= uint32(v)
+		o1 |= uint32(p.To.Reg & 31)
+
+	case 36: /* mov R,SPR */
+		o1 = oprrr(ctxt, AMSR)
+
+		v := int32(p.To.Offset)
+		if (o1 & uint32(v&^(3<<19))) != 0 {
+			ctxt.Diag("MSR register value overlap\n%v", p)
+		}
+		o1 |= uint32(v)
+		o1 |= uint32(p.From.Reg & 31)
+
+	case 37: /* mov $con,PSTATEfield -> MSR [immediate] */
+		if (uint64(p.From.Offset) &^ uint64(0xF)) != 0 {
+			ctxt.Diag("illegal immediate for PSTATE field\n%v", p)
+		}
+		o1 = opirr(ctxt, AMSR)
+		o1 |= uint32((p.From.Offset & 0xF) << 8) /* Crm */
+		v := int32(0)
+		for i := 0; i < len(pstatefield); i++ {
+			if int64(pstatefield[i].a) == p.To.Offset {
+				v = int32(pstatefield[i].b)
+				break
+			}
+		}
+
+		if v == 0 {
+			ctxt.Diag("illegal PSTATE field for immediate move\n%v", p)
+		}
+		o1 |= uint32(v)
+
+	case 38: /* clrex [$imm] */
+		o1 = opimm(ctxt, p.As)
+
+		if p.To.Type == obj.TYPE_NONE {
+			o1 |= 0xF << 8
+		} else {
+			o1 |= uint32((p.To.Offset & 0xF) << 8)
+		}
+
+	case 39: /* cbz R, rel */
+		o1 = opirr(ctxt, p.As)
+
+		o1 |= uint32(p.From.Reg & 31)
+		o1 |= uint32(brdist(ctxt, p, 0, 19, 2) << 5)
+
+	case 40: /* tbz */
+		o1 = opirr(ctxt, p.As)
+
+		v := int32(p.From.Offset)
+		if v < 0 || v > 63 {
+			ctxt.Diag("illegal bit number\n%v", p)
+		}
+		o1 |= ((uint32(v) & 0x20) << (31 - 5)) | ((uint32(v) & 0x1F) << 19)
+		o1 |= uint32(brdist(ctxt, p, 0, 14, 2) << 5)
+		o1 |= uint32(p.Reg)
+
+	case 41: /* eret, nop, others with no operands */
+		o1 = op0(ctxt, p.As)
+
+	case 42: /* bfm R,r,s,R */
+		o1 = opbfm(ctxt, p.As, int(p.From.Offset), int(p.From3.Offset), int(p.Reg), int(p.To.Reg))
+
+	case 43: /* bfm aliases */
+		r := int(p.From.Offset)
+
+		s := int(p.From3.Offset)
+		rf := int(p.Reg)
+		rt := int(p.To.Reg)
+		if rf == 0 {
+			rf = rt
+		}
+		switch p.As {
+		case ABFI:
+			o1 = opbfm(ctxt, ABFM, 64-r, s-1, rf, rt)
+
+		case ABFIW:
+			o1 = opbfm(ctxt, ABFMW, 32-r, s-1, rf, rt)
+
+		case ABFXIL:
+			o1 = opbfm(ctxt, ABFM, r, r+s-1, rf, rt)
+
+		case ABFXILW:
+			o1 = opbfm(ctxt, ABFMW, r, r+s-1, rf, rt)
+
+		case ASBFIZ:
+			o1 = opbfm(ctxt, ASBFM, 64-r, s-1, rf, rt)
+
+		case ASBFIZW:
+			o1 = opbfm(ctxt, ASBFMW, 32-r, s-1, rf, rt)
+
+		case ASBFX:
+			o1 = opbfm(ctxt, ASBFM, r, r+s-1, rf, rt)
+
+		case ASBFXW:
+			o1 = opbfm(ctxt, ASBFMW, r, r+s-1, rf, rt)
+
+		case AUBFIZ:
+			o1 = opbfm(ctxt, AUBFM, 64-r, s-1, rf, rt)
+
+		case AUBFIZW:
+			o1 = opbfm(ctxt, AUBFMW, 32-r, s-1, rf, rt)
+
+		case AUBFX:
+			o1 = opbfm(ctxt, AUBFM, r, r+s-1, rf, rt)
+
+		case AUBFXW:
+			o1 = opbfm(ctxt, AUBFMW, r, r+s-1, rf, rt)
+
+		default:
+			ctxt.Diag("bad bfm alias\n%v", ctxt.Curp)
+			break
+		}
+
+	case 44: /* extr $b, Rn, Rm, Rd */
+		o1 = opextr(ctxt, p.As, int32(p.From.Offset), int(p.From3.Reg), int(p.Reg), int(p.To.Reg))
+
+	case 45: /* sxt/uxt[bhw] R,R; movT R,R -> sxtT R,R */
+		rf := int(p.From.Reg)
+
+		rt := int(p.To.Reg)
+		as := p.As
+		if rf == REGZERO {
+			as = AMOVWU /* clearer in disassembly */
+		}
+		switch as {
+		case AMOVB, ASXTB:
+			o1 = opbfm(ctxt, ASBFM, 0, 7, rf, rt)
+
+		case AMOVH, ASXTH:
+			o1 = opbfm(ctxt, ASBFM, 0, 15, rf, rt)
+
+		case AMOVW, ASXTW:
+			o1 = opbfm(ctxt, ASBFM, 0, 31, rf, rt)
+
+		case AMOVBU, AUXTB:
+			o1 = opbfm(ctxt, AUBFM, 0, 7, rf, rt)
+
+		case AMOVHU, AUXTH:
+			o1 = opbfm(ctxt, AUBFM, 0, 15, rf, rt)
+
+		case AMOVWU:
+			o1 = oprrr(ctxt, as) | (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31)
+
+		case AUXTW:
+			o1 = opbfm(ctxt, AUBFM, 0, 31, rf, rt)
+
+		case ASXTBW:
+			o1 = opbfm(ctxt, ASBFMW, 0, 7, rf, rt)
+
+		case ASXTHW:
+			o1 = opbfm(ctxt, ASBFMW, 0, 15, rf, rt)
+
+		case AUXTBW:
+			o1 = opbfm(ctxt, AUBFMW, 0, 7, rf, rt)
+
+		case AUXTHW:
+			o1 = opbfm(ctxt, AUBFMW, 0, 15, rf, rt)
+
+		default:
+			ctxt.Diag("bad sxt %v", as)
+			break
+		}
+
+	case 46: /* cls */
+		o1 = opbit(ctxt, p.As)
+
+		o1 |= uint32(p.From.Reg&31) << 5
+		o1 |= uint32(p.To.Reg & 31)
+
+	case 47: /* movT R,V(R) -> strT (huge offset) */
+		o1 = omovlit(ctxt, AMOVW, p, &p.To, REGTMP)
+
+		if !(o1 != 0) {
+			break
+		}
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = olsxrr(ctxt, p.As, REGTMP, r, int(p.From.Reg))
+
+	case 48: /* movT V(R), R -> ldrT (huge offset) */
+		o1 = omovlit(ctxt, AMOVW, p, &p.From, REGTMP)
+
+		if !(o1 != 0) {
+			break
+		}
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o2 = olsxrr(ctxt, p.As, REGTMP, r, int(p.To.Reg))
+
+	case 50: /* sys/sysl */
+		o1 = opirr(ctxt, p.As)
+
+		if (p.From.Offset &^ int64(SYSARG4(0x7, 0xF, 0xF, 0x7))) != 0 {
+			ctxt.Diag("illegal SYS argument\n%v", p)
+		}
+		o1 |= uint32(p.From.Offset)
+		if p.To.Type == obj.TYPE_REG {
+			o1 |= uint32(p.To.Reg & 31)
+		} else if p.Reg != 0 {
+			o1 |= uint32(p.Reg & 31)
+		} else {
+			o1 |= 0x1F
+		}
+
+	case 51: /* dmb */
+		o1 = opirr(ctxt, p.As)
+
+		if p.From.Type == obj.TYPE_CONST {
+			o1 |= uint32((p.From.Offset & 0xF) << 8)
+		}
+
+	case 52: /* hint */
+		o1 = opirr(ctxt, p.As)
+
+		o1 |= uint32((p.From.Offset & 0x7F) << 5)
+
+	case 53: /* and/or/eor/bic/... $bitcon, Rn, Rd */
+		a := p.As
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		mode := 64
+		v := uint64(p.From.Offset)
+		switch p.As {
+		case AANDW, AORRW, AEORW, AANDSW:
+			mode = 32
+		case ABIC, AORN, AEON, ABICS:
+			v = ^v
+		case ABICW, AORNW, AEONW, ABICSW:
+			v = ^v
+			mode = 32
+		}
+		o1 = opirr(ctxt, a)
+		o1 |= bitconEncode(v, mode) | uint32(r&31)<<5 | uint32(rt&31)
+
+	case 54: /* floating point arith */
+		o1 = oprrr(ctxt, p.As)
+
+		var rf int
+		if p.From.Type == obj.TYPE_CONST {
+			rf = chipfloat7(ctxt, p.From.Val.(float64))
+			if rf < 0 || true {
+				ctxt.Diag("invalid floating-point immediate\n%v", p)
+				rf = 0
+			}
+
+			rf |= (1 << 3)
+		} else {
+			rf = int(p.From.Reg)
+		}
+		rt := int(p.To.Reg)
+		r := int(p.Reg)
+		if (o1&(0x1F<<24)) == (0x1E<<24) && (o1&(1<<11)) == 0 { /* monadic */
+			r = rf
+			rf = 0
+		} else if r == 0 {
+			r = rt
+		}
+		o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31)
+
+	case 56: /* floating point compare */
+		o1 = oprrr(ctxt, p.As)
+
+		var rf int
+		if p.From.Type == obj.TYPE_CONST {
+			o1 |= 8 /* zero */
+			rf = 0
+		} else {
+			rf = int(p.From.Reg)
+		}
+		rt := int(p.Reg)
+		o1 |= uint32(rf&31)<<16 | uint32(rt&31)<<5
+
+	case 57: /* floating point conditional compare */
+		o1 = oprrr(ctxt, p.As)
+
+		cond := int(p.From.Reg)
+		nzcv := int(p.To.Offset)
+		if nzcv&^0xF != 0 {
+			ctxt.Diag("implausible condition\n%v", p)
+		}
+		rf := int(p.Reg)
+		if p.From3 == nil || p.From3.Reg < REG_F0 || p.From3.Reg > REG_F31 {
+			ctxt.Diag("illegal FCCMP\n%v", p)
+			break
+		}
+		rt := int(p.From3.Reg)
+		o1 |= uint32(rf&31)<<16 | uint32(cond)<<12 | uint32(rt&31)<<5 | uint32(nzcv)
+
+	case 58: /* ldar/ldxr/ldaxr */
+		o1 = opload(ctxt, p.As)
+
+		o1 |= 0x1F << 16
+		o1 |= uint32(p.From.Reg) << 5
+		if p.Reg != 0 {
+			o1 |= uint32(p.Reg) << 10
+		} else {
+			o1 |= 0x1F << 10
+		}
+		o1 |= uint32(p.To.Reg & 31)
+
+	case 59: /* stxr/stlxr */
+		o1 = opstore(ctxt, p.As)
+
+		if p.RegTo2 != obj.REG_NONE {
+			o1 |= uint32(p.RegTo2&31) << 16
+		} else {
+			o1 |= 0x1F << 16
+		}
+
+		// TODO(aram): add support for STXP
+		o1 |= uint32(p.To.Reg&31) << 5
+
+		o1 |= uint32(p.From.Reg & 31)
+
+	case 60: /* adrp label,r */
+		d := brdist(ctxt, p, 12, 21, 0)
+
+		o1 = ADR(1, uint32(d), uint32(p.To.Reg))
+
+	case 61: /* adr label, r */
+		d := brdist(ctxt, p, 0, 21, 0)
+
+		o1 = ADR(0, uint32(d), uint32(p.To.Reg))
+
+	case 62: /* op $movcon, [R], R -> mov $movcon, REGTMP + op REGTMP, [R], R */
+		if p.Reg == REGTMP {
+			ctxt.Diag("cannot use REGTMP as source: %v\n", p)
+		}
+		o1 = omovconst(ctxt, AMOVD, p, &p.From, REGTMP)
+
+		rt := int(p.To.Reg)
+		if p.To.Type == obj.TYPE_NONE {
+			rt = REGZERO
+		}
+		r := int(p.Reg)
+		if r == 0 {
+			r = rt
+		}
+		if p.To.Type != obj.TYPE_NONE && (p.To.Reg == REGSP || r == REGSP) {
+			o2 = opxrrr(ctxt, p.As)
+			o2 |= REGTMP & 31 << 16
+			o2 |= LSL0_64
+		} else {
+			o2 = oprrr(ctxt, p.As)
+			o2 |= REGTMP & 31 << 16 /* shift is 0 */
+		}
+		o2 |= uint32(r&31) << 5
+		o2 |= uint32(rt & 31)
+
+		/* reloc ops */
+	case 64: /* movT R,addr -> adrp + add + movT R, (REGTMP) */
+		o1 = ADR(1, 0, REGTMP)
+		o2 = opirr(ctxt, AADD) | REGTMP&31<<5 | REGTMP&31
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.To.Sym
+		rel.Add = p.To.Offset
+		rel.Type = obj.R_ADDRARM64
+		o3 = olsr12u(ctxt, int32(opstr12(ctxt, p.As)), 0, REGTMP, int(p.From.Reg))
+
+	case 65: /* movT addr,R -> adrp + add + movT (REGTMP), R */
+		o1 = ADR(1, 0, REGTMP)
+		o2 = opirr(ctxt, AADD) | REGTMP&31<<5 | REGTMP&31
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Add = p.From.Offset
+		rel.Type = obj.R_ADDRARM64
+		o3 = olsr12u(ctxt, int32(opldr12(ctxt, p.As)), 0, REGTMP, int(p.To.Reg))
+
+	case 66: /* ldp O(R)!, (r1, r2); ldp (R)O!, (r1, r2) */
+		v := int32(p.From.Offset)
+
+		if v < -512 || v > 504 {
+			ctxt.Diag("offset out of range\n%v", p)
+		}
+		if o.scond == C_XPOST {
+			o1 |= 1 << 23
+		} else {
+			o1 |= 3 << 23
+		}
+		o1 |= 1 << 22
+		o1 |= uint32(int64(2<<30|5<<27|((uint32(v)/8)&0x7f)<<15) | p.To.Offset<<10 | int64(uint32(p.From.Reg&31)<<5) | int64(p.To.Reg&31))
+
+	case 67: /* stp (r1, r2), O(R)!; stp (r1, r2), (R)O! */
+		v := int32(p.To.Offset)
+
+		if v < -512 || v > 504 {
+			ctxt.Diag("offset out of range\n%v", p)
+		}
+		if o.scond == C_XPOST {
+			o1 |= 1 << 23
+		} else {
+			o1 |= 3 << 23
+		}
+		o1 |= uint32(int64(2<<30|5<<27|((uint32(v)/8)&0x7f)<<15) | p.From.Offset<<10 | int64(uint32(p.To.Reg&31)<<5) | int64(p.From.Reg&31))
+
+	case 68: /* movT $vconaddr(SB), reg -> adrp + add + reloc */
+		if p.As == AMOVW {
+			ctxt.Diag("invalid load of 32-bit address: %v", p)
+		}
+		o1 = ADR(1, 0, uint32(p.To.Reg))
+		o2 = opirr(ctxt, AADD) | uint32(p.To.Reg&31)<<5 | uint32(p.To.Reg&31)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Add = p.From.Offset
+		rel.Type = obj.R_ADDRARM64
+
+	case 69: /* LE model movd $tlsvar, reg -> movz reg, 0 + reloc */
+		o1 = opirr(ctxt, AMOVZ)
+		o1 |= uint32(p.To.Reg & 31)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Type = obj.R_ARM64_TLS_LE
+		if p.From.Offset != 0 {
+			ctxt.Diag("invalid offset on MOVW $tlsvar")
+		}
+
+	case 70: /* IE model movd $tlsvar, reg -> adrp REGTMP, 0; ldr reg, [REGTMP, #0] + relocs */
+		o1 = ADR(1, 0, REGTMP)
+		o2 = olsr12u(ctxt, int32(opldr12(ctxt, AMOVD)), 0, REGTMP, int(p.To.Reg))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Add = 0
+		rel.Type = obj.R_ARM64_TLS_IE
+		if p.From.Offset != 0 {
+			ctxt.Diag("invalid offset on MOVW $tlsvar")
+		}
+
+	case 71: /* movd sym@GOT, reg -> adrp REGTMP, #0; ldr reg, [REGTMP, #0] + relocs */
+		o1 = ADR(1, 0, REGTMP)
+		o2 = olsr12u(ctxt, int32(opldr12(ctxt, AMOVD)), 0, REGTMP, int(p.To.Reg))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Add = 0
+		rel.Type = obj.R_ARM64_GOTPCREL
+
+	// This is supposed to be something that stops execution.
+	// It's not supposed to be reached, ever, but if it is, we'd
+	// like to be able to tell how we got there. Assemble as
+	// 0xbea71700 which is guaranteed to raise undefined instruction
+	// exception.
+	case 90:
+		o1 = 0xbea71700
+
+		break
+	}
+
+	out[0] = o1
+	out[1] = o2
+	out[2] = o3
+	out[3] = o4
+	out[4] = o5
+	return
+}
+
+/*
+ * basic Rm op Rn -> Rd (using shifted register with 0)
+ * also op Rn -> Rt
+ * also Rm*Rn op Ra -> Rd
+ */
+func oprrr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AADC:
+		return S64 | 0<<30 | 0<<29 | 0xd0<<21 | 0<<10
+
+	case AADCW:
+		return S32 | 0<<30 | 0<<29 | 0xd0<<21 | 0<<10
+
+	case AADCS:
+		return S64 | 0<<30 | 1<<29 | 0xd0<<21 | 0<<10
+
+	case AADCSW:
+		return S32 | 0<<30 | 1<<29 | 0xd0<<21 | 0<<10
+
+	case ANGC, ASBC:
+		return S64 | 1<<30 | 0<<29 | 0xd0<<21 | 0<<10
+
+	case ANGCS, ASBCS:
+		return S64 | 1<<30 | 1<<29 | 0xd0<<21 | 0<<10
+
+	case ANGCW, ASBCW:
+		return S32 | 1<<30 | 0<<29 | 0xd0<<21 | 0<<10
+
+	case ANGCSW, ASBCSW:
+		return S32 | 1<<30 | 1<<29 | 0xd0<<21 | 0<<10
+
+	case AADD:
+		return S64 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case AADDW:
+		return S32 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case ACMN, AADDS:
+		return S64 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case ACMNW, AADDSW:
+		return S32 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case ASUB:
+		return S64 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case ASUBW:
+		return S32 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case ACMP, ASUBS:
+		return S64 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case ACMPW, ASUBSW:
+		return S32 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10
+
+	case AAND:
+		return S64 | 0<<29 | 0xA<<24
+
+	case AANDW:
+		return S32 | 0<<29 | 0xA<<24
+
+	case AMOVD, AORR:
+		return S64 | 1<<29 | 0xA<<24
+
+		//	case AMOVW:
+	case AMOVWU, AORRW:
+		return S32 | 1<<29 | 0xA<<24
+
+	case AEOR:
+		return S64 | 2<<29 | 0xA<<24
+
+	case AEORW:
+		return S32 | 2<<29 | 0xA<<24
+
+	case AANDS:
+		return S64 | 3<<29 | 0xA<<24
+
+	case AANDSW:
+		return S32 | 3<<29 | 0xA<<24
+
+	case ABIC:
+		return S64 | 0<<29 | 0xA<<24 | 1<<21
+
+	case ABICW:
+		return S32 | 0<<29 | 0xA<<24 | 1<<21
+
+	case ABICS:
+		return S64 | 3<<29 | 0xA<<24 | 1<<21
+
+	case ABICSW:
+		return S32 | 3<<29 | 0xA<<24 | 1<<21
+
+	case AEON:
+		return S64 | 2<<29 | 0xA<<24 | 1<<21
+
+	case AEONW:
+		return S32 | 2<<29 | 0xA<<24 | 1<<21
+
+	case AMVN, AORN:
+		return S64 | 1<<29 | 0xA<<24 | 1<<21
+
+	case AMVNW, AORNW:
+		return S32 | 1<<29 | 0xA<<24 | 1<<21
+
+	case AASR:
+		return S64 | OPDP2(10) /* also ASRV */
+
+	case AASRW:
+		return S32 | OPDP2(10)
+
+	case ALSL:
+		return S64 | OPDP2(8)
+
+	case ALSLW:
+		return S32 | OPDP2(8)
+
+	case ALSR:
+		return S64 | OPDP2(9)
+
+	case ALSRW:
+		return S32 | OPDP2(9)
+
+	case AROR:
+		return S64 | OPDP2(11)
+
+	case ARORW:
+		return S32 | OPDP2(11)
+
+	case ACCMN:
+		return S64 | 0<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4 /* cond<<12 | nzcv<<0 */
+
+	case ACCMNW:
+		return S32 | 0<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4
+
+	case ACCMP:
+		return S64 | 1<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4 /* imm5<<16 | cond<<12 | nzcv<<0 */
+
+	case ACCMPW:
+		return S32 | 1<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4
+
+	case ACRC32B:
+		return S32 | OPDP2(16)
+
+	case ACRC32H:
+		return S32 | OPDP2(17)
+
+	case ACRC32W:
+		return S32 | OPDP2(18)
+
+	case ACRC32X:
+		return S64 | OPDP2(19)
+
+	case ACRC32CB:
+		return S32 | OPDP2(20)
+
+	case ACRC32CH:
+		return S32 | OPDP2(21)
+
+	case ACRC32CW:
+		return S32 | OPDP2(22)
+
+	case ACRC32CX:
+		return S64 | OPDP2(23)
+
+	case ACSEL:
+		return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10
+
+	case ACSELW:
+		return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10
+
+	case ACSET:
+		return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10
+
+	case ACSETW:
+		return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10
+
+	case ACSETM:
+		return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10
+
+	case ACSETMW:
+		return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10
+
+	case ACINC, ACSINC:
+		return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10
+
+	case ACINCW, ACSINCW:
+		return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10
+
+	case ACINV, ACSINV:
+		return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10
+
+	case ACINVW, ACSINVW:
+		return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10
+
+	case ACNEG, ACSNEG:
+		return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10
+
+	case ACNEGW, ACSNEGW:
+		return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10
+
+	case AMUL, AMADD:
+		return S64 | 0<<29 | 0x1B<<24 | 0<<21 | 0<<15
+
+	case AMULW, AMADDW:
+		return S32 | 0<<29 | 0x1B<<24 | 0<<21 | 0<<15
+
+	case AMNEG, AMSUB:
+		return S64 | 0<<29 | 0x1B<<24 | 0<<21 | 1<<15
+
+	case AMNEGW, AMSUBW:
+		return S32 | 0<<29 | 0x1B<<24 | 0<<21 | 1<<15
+
+	case AMRS:
+		return SYSOP(1, 2, 0, 0, 0, 0, 0)
+
+	case AMSR:
+		return SYSOP(0, 2, 0, 0, 0, 0, 0)
+
+	case ANEG:
+		return S64 | 1<<30 | 0<<29 | 0xB<<24 | 0<<21
+
+	case ANEGW:
+		return S32 | 1<<30 | 0<<29 | 0xB<<24 | 0<<21
+
+	case ANEGS:
+		return S64 | 1<<30 | 1<<29 | 0xB<<24 | 0<<21
+
+	case ANEGSW:
+		return S32 | 1<<30 | 1<<29 | 0xB<<24 | 0<<21
+
+	case AREM, ASDIV:
+		return S64 | OPDP2(3)
+
+	case AREMW, ASDIVW:
+		return S32 | OPDP2(3)
+
+	case ASMULL, ASMADDL:
+		return OPDP3(1, 0, 1, 0)
+
+	case ASMNEGL, ASMSUBL:
+		return OPDP3(1, 0, 1, 1)
+
+	case ASMULH:
+		return OPDP3(1, 0, 2, 0)
+
+	case AUMULL, AUMADDL:
+		return OPDP3(1, 0, 5, 0)
+
+	case AUMNEGL, AUMSUBL:
+		return OPDP3(1, 0, 5, 1)
+
+	case AUMULH:
+		return OPDP3(1, 0, 6, 0)
+
+	case AUREM, AUDIV:
+		return S64 | OPDP2(2)
+
+	case AUREMW, AUDIVW:
+		return S32 | OPDP2(2)
+
+	case AAESE:
+		return 0x4E<<24 | 2<<20 | 8<<16 | 4<<12 | 2<<10
+
+	case AAESD:
+		return 0x4E<<24 | 2<<20 | 8<<16 | 5<<12 | 2<<10
+
+	case AAESMC:
+		return 0x4E<<24 | 2<<20 | 8<<16 | 6<<12 | 2<<10
+
+	case AAESIMC:
+		return 0x4E<<24 | 2<<20 | 8<<16 | 7<<12 | 2<<10
+
+	case ASHA1C:
+		return 0x5E<<24 | 0<<12
+
+	case ASHA1P:
+		return 0x5E<<24 | 1<<12
+
+	case ASHA1M:
+		return 0x5E<<24 | 2<<12
+
+	case ASHA1SU0:
+		return 0x5E<<24 | 3<<12
+
+	case ASHA256H:
+		return 0x5E<<24 | 4<<12
+
+	case ASHA256H2:
+		return 0x5E<<24 | 5<<12
+
+	case ASHA256SU1:
+		return 0x5E<<24 | 6<<12
+
+	case ASHA1H:
+		return 0x5E<<24 | 2<<20 | 8<<16 | 0<<12 | 2<<10
+
+	case ASHA1SU1:
+		return 0x5E<<24 | 2<<20 | 8<<16 | 1<<12 | 2<<10
+
+	case ASHA256SU0:
+		return 0x5E<<24 | 2<<20 | 8<<16 | 2<<12 | 2<<10
+
+	case AFCVTZSD:
+		return FPCVTI(1, 0, 1, 3, 0)
+
+	case AFCVTZSDW:
+		return FPCVTI(0, 0, 1, 3, 0)
+
+	case AFCVTZSS:
+		return FPCVTI(1, 0, 0, 3, 0)
+
+	case AFCVTZSSW:
+		return FPCVTI(0, 0, 0, 3, 0)
+
+	case AFCVTZUD:
+		return FPCVTI(1, 0, 1, 3, 1)
+
+	case AFCVTZUDW:
+		return FPCVTI(0, 0, 1, 3, 1)
+
+	case AFCVTZUS:
+		return FPCVTI(1, 0, 0, 3, 1)
+
+	case AFCVTZUSW:
+		return FPCVTI(0, 0, 0, 3, 1)
+
+	case ASCVTFD:
+		return FPCVTI(1, 0, 1, 0, 2)
+
+	case ASCVTFS:
+		return FPCVTI(1, 0, 0, 0, 2)
+
+	case ASCVTFWD:
+		return FPCVTI(0, 0, 1, 0, 2)
+
+	case ASCVTFWS:
+		return FPCVTI(0, 0, 0, 0, 2)
+
+	case AUCVTFD:
+		return FPCVTI(1, 0, 1, 0, 3)
+
+	case AUCVTFS:
+		return FPCVTI(1, 0, 0, 0, 3)
+
+	case AUCVTFWD:
+		return FPCVTI(0, 0, 1, 0, 3)
+
+	case AUCVTFWS:
+		return FPCVTI(0, 0, 0, 0, 3)
+
+	case AFADDS:
+		return FPOP2S(0, 0, 0, 2)
+
+	case AFADDD:
+		return FPOP2S(0, 0, 1, 2)
+
+	case AFSUBS:
+		return FPOP2S(0, 0, 0, 3)
+
+	case AFSUBD:
+		return FPOP2S(0, 0, 1, 3)
+
+	case AFMULS:
+		return FPOP2S(0, 0, 0, 0)
+
+	case AFMULD:
+		return FPOP2S(0, 0, 1, 0)
+
+	case AFDIVS:
+		return FPOP2S(0, 0, 0, 1)
+
+	case AFDIVD:
+		return FPOP2S(0, 0, 1, 1)
+
+	case AFMAXS:
+		return FPOP2S(0, 0, 0, 4)
+
+	case AFMINS:
+		return FPOP2S(0, 0, 0, 5)
+
+	case AFMAXD:
+		return FPOP2S(0, 0, 1, 4)
+
+	case AFMIND:
+		return FPOP2S(0, 0, 1, 5)
+
+	case AFMAXNMS:
+		return FPOP2S(0, 0, 0, 6)
+
+	case AFMAXNMD:
+		return FPOP2S(0, 0, 1, 6)
+
+	case AFMINNMS:
+		return FPOP2S(0, 0, 0, 7)
+
+	case AFMINNMD:
+		return FPOP2S(0, 0, 1, 7)
+
+	case AFNMULS:
+		return FPOP2S(0, 0, 0, 8)
+
+	case AFNMULD:
+		return FPOP2S(0, 0, 1, 8)
+
+	case AFCMPS:
+		return FPCMP(0, 0, 0, 0, 0)
+
+	case AFCMPD:
+		return FPCMP(0, 0, 1, 0, 0)
+
+	case AFCMPES:
+		return FPCMP(0, 0, 0, 0, 16)
+
+	case AFCMPED:
+		return FPCMP(0, 0, 1, 0, 16)
+
+	case AFCCMPS:
+		return FPCCMP(0, 0, 0, 0)
+
+	case AFCCMPD:
+		return FPCCMP(0, 0, 1, 0)
+
+	case AFCCMPES:
+		return FPCCMP(0, 0, 0, 1)
+
+	case AFCCMPED:
+		return FPCCMP(0, 0, 1, 1)
+
+	case AFCSELS:
+		return 0x1E<<24 | 0<<22 | 1<<21 | 3<<10
+
+	case AFCSELD:
+		return 0x1E<<24 | 1<<22 | 1<<21 | 3<<10
+
+	case AFMOVS:
+		return FPOP1S(0, 0, 0, 0)
+
+	case AFABSS:
+		return FPOP1S(0, 0, 0, 1)
+
+	case AFNEGS:
+		return FPOP1S(0, 0, 0, 2)
+
+	case AFSQRTS:
+		return FPOP1S(0, 0, 0, 3)
+
+	case AFCVTSD:
+		return FPOP1S(0, 0, 0, 5)
+
+	case AFCVTSH:
+		return FPOP1S(0, 0, 0, 7)
+
+	case AFRINTNS:
+		return FPOP1S(0, 0, 0, 8)
+
+	case AFRINTPS:
+		return FPOP1S(0, 0, 0, 9)
+
+	case AFRINTMS:
+		return FPOP1S(0, 0, 0, 10)
+
+	case AFRINTZS:
+		return FPOP1S(0, 0, 0, 11)
+
+	case AFRINTAS:
+		return FPOP1S(0, 0, 0, 12)
+
+	case AFRINTXS:
+		return FPOP1S(0, 0, 0, 14)
+
+	case AFRINTIS:
+		return FPOP1S(0, 0, 0, 15)
+
+	case AFMOVD:
+		return FPOP1S(0, 0, 1, 0)
+
+	case AFABSD:
+		return FPOP1S(0, 0, 1, 1)
+
+	case AFNEGD:
+		return FPOP1S(0, 0, 1, 2)
+
+	case AFSQRTD:
+		return FPOP1S(0, 0, 1, 3)
+
+	case AFCVTDS:
+		return FPOP1S(0, 0, 1, 4)
+
+	case AFCVTDH:
+		return FPOP1S(0, 0, 1, 7)
+
+	case AFRINTND:
+		return FPOP1S(0, 0, 1, 8)
+
+	case AFRINTPD:
+		return FPOP1S(0, 0, 1, 9)
+
+	case AFRINTMD:
+		return FPOP1S(0, 0, 1, 10)
+
+	case AFRINTZD:
+		return FPOP1S(0, 0, 1, 11)
+
+	case AFRINTAD:
+		return FPOP1S(0, 0, 1, 12)
+
+	case AFRINTXD:
+		return FPOP1S(0, 0, 1, 14)
+
+	case AFRINTID:
+		return FPOP1S(0, 0, 1, 15)
+
+	case AFCVTHS:
+		return FPOP1S(0, 0, 3, 4)
+
+	case AFCVTHD:
+		return FPOP1S(0, 0, 3, 5)
+	}
+
+	ctxt.Diag("bad rrr %d %v", a, a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+/*
+ * imm -> Rd
+ * imm op Rn -> Rd
+ */
+func opirr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	/* op $addcon, Rn, Rd */
+	case AMOVD, AADD:
+		return S64 | 0<<30 | 0<<29 | 0x11<<24
+
+	case ACMN, AADDS:
+		return S64 | 0<<30 | 1<<29 | 0x11<<24
+
+	case AMOVW, AADDW:
+		return S32 | 0<<30 | 0<<29 | 0x11<<24
+
+	case ACMNW, AADDSW:
+		return S32 | 0<<30 | 1<<29 | 0x11<<24
+
+	case ASUB:
+		return S64 | 1<<30 | 0<<29 | 0x11<<24
+
+	case ACMP, ASUBS:
+		return S64 | 1<<30 | 1<<29 | 0x11<<24
+
+	case ASUBW:
+		return S32 | 1<<30 | 0<<29 | 0x11<<24
+
+	case ACMPW, ASUBSW:
+		return S32 | 1<<30 | 1<<29 | 0x11<<24
+
+		/* op $imm(SB), Rd; op label, Rd */
+	case AADR:
+		return 0<<31 | 0x10<<24
+
+	case AADRP:
+		return 1<<31 | 0x10<<24
+
+		/* op $bimm, Rn, Rd */
+	case AAND, ABIC:
+		return S64 | 0<<29 | 0x24<<23
+
+	case AANDW, ABICW:
+		return S32 | 0<<29 | 0x24<<23 | 0<<22
+
+	case AORR, AORN:
+		return S64 | 1<<29 | 0x24<<23
+
+	case AORRW, AORNW:
+		return S32 | 1<<29 | 0x24<<23 | 0<<22
+
+	case AEOR, AEON:
+		return S64 | 2<<29 | 0x24<<23
+
+	case AEORW, AEONW:
+		return S32 | 2<<29 | 0x24<<23 | 0<<22
+
+	case AANDS, ABICS:
+		return S64 | 3<<29 | 0x24<<23
+
+	case AANDSW, ABICSW:
+		return S32 | 3<<29 | 0x24<<23 | 0<<22
+
+	case AASR:
+		return S64 | 0<<29 | 0x26<<23 /* alias of SBFM */
+
+	case AASRW:
+		return S32 | 0<<29 | 0x26<<23 | 0<<22
+
+		/* op $width, $lsb, Rn, Rd */
+	case ABFI:
+		return S64 | 2<<29 | 0x26<<23 | 1<<22
+		/* alias of BFM */
+
+	case ABFIW:
+		return S32 | 2<<29 | 0x26<<23 | 0<<22
+
+		/* op $imms, $immr, Rn, Rd */
+	case ABFM:
+		return S64 | 1<<29 | 0x26<<23 | 1<<22
+
+	case ABFMW:
+		return S32 | 1<<29 | 0x26<<23 | 0<<22
+
+	case ASBFM:
+		return S64 | 0<<29 | 0x26<<23 | 1<<22
+
+	case ASBFMW:
+		return S32 | 0<<29 | 0x26<<23 | 0<<22
+
+	case AUBFM:
+		return S64 | 2<<29 | 0x26<<23 | 1<<22
+
+	case AUBFMW:
+		return S32 | 2<<29 | 0x26<<23 | 0<<22
+
+	case ABFXIL:
+		return S64 | 1<<29 | 0x26<<23 | 1<<22 /* alias of BFM */
+
+	case ABFXILW:
+		return S32 | 1<<29 | 0x26<<23 | 0<<22
+
+	case AEXTR:
+		return S64 | 0<<29 | 0x27<<23 | 1<<22 | 0<<21
+
+	case AEXTRW:
+		return S32 | 0<<29 | 0x27<<23 | 0<<22 | 0<<21
+
+	case ACBNZ:
+		return S64 | 0x1A<<25 | 1<<24
+
+	case ACBNZW:
+		return S32 | 0x1A<<25 | 1<<24
+
+	case ACBZ:
+		return S64 | 0x1A<<25 | 0<<24
+
+	case ACBZW:
+		return S32 | 0x1A<<25 | 0<<24
+
+	case ACCMN:
+		return S64 | 0<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4 /* imm5<<16 | cond<<12 | nzcv<<0 */
+
+	case ACCMNW:
+		return S32 | 0<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4
+
+	case ACCMP:
+		return S64 | 1<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4 /* imm5<<16 | cond<<12 | nzcv<<0 */
+
+	case ACCMPW:
+		return S32 | 1<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4
+
+	case AMOVK:
+		return S64 | 3<<29 | 0x25<<23
+
+	case AMOVKW:
+		return S32 | 3<<29 | 0x25<<23
+
+	case AMOVN:
+		return S64 | 0<<29 | 0x25<<23
+
+	case AMOVNW:
+		return S32 | 0<<29 | 0x25<<23
+
+	case AMOVZ:
+		return S64 | 2<<29 | 0x25<<23
+
+	case AMOVZW:
+		return S32 | 2<<29 | 0x25<<23
+
+	case AMSR:
+		return SYSOP(0, 0, 0, 4, 0, 0, 0x1F) /* MSR (immediate) */
+
+	case AAT,
+		ADC,
+		AIC,
+		ATLBI,
+		ASYS:
+		return SYSOP(0, 1, 0, 0, 0, 0, 0)
+
+	case ASYSL:
+		return SYSOP(1, 1, 0, 0, 0, 0, 0)
+
+	case ATBZ:
+		return 0x36 << 24
+
+	case ATBNZ:
+		return 0x37 << 24
+
+	case ADSB:
+		return SYSOP(0, 0, 3, 3, 0, 4, 0x1F)
+
+	case ADMB:
+		return SYSOP(0, 0, 3, 3, 0, 5, 0x1F)
+
+	case AISB:
+		return SYSOP(0, 0, 3, 3, 0, 6, 0x1F)
+
+	case AHINT:
+		return SYSOP(0, 0, 3, 2, 0, 0, 0x1F)
+	}
+
+	ctxt.Diag("bad irr %v", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+func opbit(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ACLS:
+		return S64 | OPBIT(5)
+
+	case ACLSW:
+		return S32 | OPBIT(5)
+
+	case ACLZ:
+		return S64 | OPBIT(4)
+
+	case ACLZW:
+		return S32 | OPBIT(4)
+
+	case ARBIT:
+		return S64 | OPBIT(0)
+
+	case ARBITW:
+		return S32 | OPBIT(0)
+
+	case AREV:
+		return S64 | OPBIT(3)
+
+	case AREVW:
+		return S32 | OPBIT(2)
+
+	case AREV16:
+		return S64 | OPBIT(1)
+
+	case AREV16W:
+		return S32 | OPBIT(1)
+
+	case AREV32:
+		return S64 | OPBIT(2)
+
+	default:
+		ctxt.Diag("bad bit op\n%v", ctxt.Curp)
+		return 0
+	}
+}
+
+/*
+ * add/subtract extended register
+ */
+func opxrrr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AADD:
+		return S64 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64
+
+	case AADDW:
+		return S32 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32
+
+	case ACMN, AADDS:
+		return S64 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64
+
+	case ACMNW, AADDSW:
+		return S32 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32
+
+	case ASUB:
+		return S64 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64
+
+	case ASUBW:
+		return S32 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32
+
+	case ACMP, ASUBS:
+		return S64 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64
+
+	case ACMPW, ASUBSW:
+		return S32 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32
+	}
+
+	ctxt.Diag("bad opxrrr %v\n%v", a, ctxt.Curp)
+	return 0
+}
+
+func opimm(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ASVC:
+		return 0xD4<<24 | 0<<21 | 1 /* imm16<<5 */
+
+	case AHVC:
+		return 0xD4<<24 | 0<<21 | 2
+
+	case ASMC:
+		return 0xD4<<24 | 0<<21 | 3
+
+	case ABRK:
+		return 0xD4<<24 | 1<<21 | 0
+
+	case AHLT:
+		return 0xD4<<24 | 2<<21 | 0
+
+	case ADCPS1:
+		return 0xD4<<24 | 5<<21 | 1
+
+	case ADCPS2:
+		return 0xD4<<24 | 5<<21 | 2
+
+	case ADCPS3:
+		return 0xD4<<24 | 5<<21 | 3
+
+	case ACLREX:
+		return SYSOP(0, 0, 3, 3, 0, 2, 0x1F)
+	}
+
+	ctxt.Diag("bad imm %v", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+func brdist(ctxt *obj.Link, p *obj.Prog, preshift int, flen int, shift int) int64 {
+	v := int64(0)
+	t := int64(0)
+	if p.Pcond != nil {
+		v = (p.Pcond.Pc >> uint(preshift)) - (ctxt.Pc >> uint(preshift))
+		if (v & ((1 << uint(shift)) - 1)) != 0 {
+			ctxt.Diag("misaligned label\n%v", p)
+		}
+		v >>= uint(shift)
+		t = int64(1) << uint(flen-1)
+		if v < -t || v >= t {
+			ctxt.Diag("branch too far %#x vs %#x [%p]\n%v\n%v", v, t, ctxt.Blitrl, p, p.Pcond)
+			panic("branch too far")
+		}
+	}
+
+	return v & ((t << 1) - 1)
+}
+
+/*
+ * pc-relative branches
+ */
+func opbra(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ABEQ:
+		return OPBcc(0x0)
+
+	case ABNE:
+		return OPBcc(0x1)
+
+	case ABCS:
+		return OPBcc(0x2)
+
+	case ABHS:
+		return OPBcc(0x2)
+
+	case ABCC:
+		return OPBcc(0x3)
+
+	case ABLO:
+		return OPBcc(0x3)
+
+	case ABMI:
+		return OPBcc(0x4)
+
+	case ABPL:
+		return OPBcc(0x5)
+
+	case ABVS:
+		return OPBcc(0x6)
+
+	case ABVC:
+		return OPBcc(0x7)
+
+	case ABHI:
+		return OPBcc(0x8)
+
+	case ABLS:
+		return OPBcc(0x9)
+
+	case ABGE:
+		return OPBcc(0xa)
+
+	case ABLT:
+		return OPBcc(0xb)
+
+	case ABGT:
+		return OPBcc(0xc)
+
+	case ABLE:
+		return OPBcc(0xd) /* imm19<<5 | cond */
+
+	case AB:
+		return 0<<31 | 5<<26 /* imm26 */
+
+	case obj.ADUFFZERO, obj.ADUFFCOPY, ABL:
+		return 1<<31 | 5<<26
+	}
+
+	ctxt.Diag("bad bra %v", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+func opbrr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ABL:
+		return OPBLR(1) /* BLR */
+
+	case AB:
+		return OPBLR(0) /* BR */
+
+	case obj.ARET:
+		return OPBLR(2) /* RET */
+	}
+
+	ctxt.Diag("bad brr %v", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+func op0(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ADRPS:
+		return 0x6B<<25 | 5<<21 | 0x1F<<16 | 0x1F<<5
+
+	case AERET:
+		return 0x6B<<25 | 4<<21 | 0x1F<<16 | 0<<10 | 0x1F<<5
+
+	// case ANOP:
+	// 	return SYSHINT(0)
+
+	case AYIELD:
+		return SYSHINT(1)
+
+	case AWFE:
+		return SYSHINT(2)
+
+	case AWFI:
+		return SYSHINT(3)
+
+	case ASEV:
+		return SYSHINT(4)
+
+	case ASEVL:
+		return SYSHINT(5)
+	}
+
+	ctxt.Diag("bad op0 %v", a)
+	prasm(ctxt.Curp)
+	return 0
+}
+
+/*
+ * register offset
+ */
+func opload(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ALDAR:
+		return LDSTX(3, 1, 1, 0, 1) | 0x1F<<10
+
+	case ALDARW:
+		return LDSTX(2, 1, 1, 0, 1) | 0x1F<<10
+
+	case ALDARB:
+		return LDSTX(0, 1, 1, 0, 1) | 0x1F<<10
+
+	case ALDARH:
+		return LDSTX(1, 1, 1, 0, 1) | 0x1F<<10
+
+	case ALDAXP:
+		return LDSTX(3, 0, 1, 1, 1)
+
+	case ALDAXPW:
+		return LDSTX(2, 0, 1, 1, 1)
+
+	case ALDAXR:
+		return LDSTX(3, 0, 1, 0, 1) | 0x1F<<10
+
+	case ALDAXRW:
+		return LDSTX(2, 0, 1, 0, 1) | 0x1F<<10
+
+	case ALDAXRB:
+		return LDSTX(0, 0, 1, 0, 1) | 0x1F<<10
+
+	case ALDAXRH:
+		return LDSTX(1, 0, 1, 0, 1) | 0x1F<<10
+
+	case ALDXR:
+		return LDSTX(3, 0, 1, 0, 0) | 0x1F<<10
+
+	case ALDXRB:
+		return LDSTX(0, 0, 1, 0, 0) | 0x1F<<10
+
+	case ALDXRH:
+		return LDSTX(1, 0, 1, 0, 0) | 0x1F<<10
+
+	case ALDXRW:
+		return LDSTX(2, 0, 1, 0, 0) | 0x1F<<10
+
+	case ALDXP:
+		return LDSTX(3, 0, 1, 1, 0)
+
+	case ALDXPW:
+		return LDSTX(2, 0, 1, 1, 0)
+
+	case AMOVNP:
+		return S64 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22
+
+	case AMOVNPW:
+		return S32 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22
+	}
+
+	ctxt.Diag("bad opload %v\n%v", a, ctxt.Curp)
+	return 0
+}
+
+func opstore(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ASTLR:
+		return LDSTX(3, 1, 0, 0, 1) | 0x1F<<10
+
+	case ASTLRB:
+		return LDSTX(0, 1, 0, 0, 1) | 0x1F<<10
+
+	case ASTLRH:
+		return LDSTX(1, 1, 0, 0, 1) | 0x1F<<10
+
+	case ASTLP:
+		return LDSTX(3, 0, 0, 1, 1)
+
+	case ASTLPW:
+		return LDSTX(2, 0, 0, 1, 1)
+
+	case ASTLRW:
+		return LDSTX(2, 1, 0, 0, 1) | 0x1F<<10
+
+	case ASTLXP:
+		return LDSTX(2, 0, 0, 1, 1)
+
+	case ASTLXPW:
+		return LDSTX(3, 0, 0, 1, 1)
+
+	case ASTLXR:
+		return LDSTX(3, 0, 0, 0, 1) | 0x1F<<10
+
+	case ASTLXRB:
+		return LDSTX(0, 0, 0, 0, 1) | 0x1F<<10
+
+	case ASTLXRH:
+		return LDSTX(1, 0, 0, 0, 1) | 0x1F<<10
+
+	case ASTLXRW:
+		return LDSTX(2, 0, 0, 0, 1) | 0x1F<<10
+
+	case ASTXR:
+		return LDSTX(3, 0, 0, 0, 0) | 0x1F<<10
+
+	case ASTXRB:
+		return LDSTX(0, 0, 0, 0, 0) | 0x1F<<10
+
+	case ASTXRH:
+		return LDSTX(1, 0, 0, 0, 0) | 0x1F<<10
+
+	case ASTXP:
+		return LDSTX(3, 0, 0, 1, 0)
+
+	case ASTXPW:
+		return LDSTX(2, 0, 0, 1, 0)
+
+	case ASTXRW:
+		return LDSTX(2, 0, 0, 0, 0) | 0x1F<<10
+
+	case AMOVNP:
+		return S64 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22
+
+	case AMOVNPW:
+		return S32 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22
+	}
+
+	ctxt.Diag("bad opstore %v\n%v", a, ctxt.Curp)
+	return 0
+}
+
+/*
+ * load/store register (unsigned immediate) C3.3.13
+ *	these produce 64-bit values (when there's an option)
+ */
+func olsr12u(ctxt *obj.Link, o int32, v int32, b int, r int) uint32 {
+	if v < 0 || v >= (1<<12) {
+		ctxt.Diag("offset out of range: %d\n%v", v, ctxt.Curp)
+	}
+	o |= (v & 0xFFF) << 10
+	o |= int32(b&31) << 5
+	o |= int32(r & 31)
+	return uint32(o)
+}
+
+func opldr12(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVD:
+		return LDSTR12U(3, 0, 1) /* imm12<<10 | Rn<<5 | Rt */
+
+	case AMOVW:
+		return LDSTR12U(2, 0, 2)
+
+	case AMOVWU:
+		return LDSTR12U(2, 0, 1)
+
+	case AMOVH:
+		return LDSTR12U(1, 0, 2)
+
+	case AMOVHU:
+		return LDSTR12U(1, 0, 1)
+
+	case AMOVB:
+		return LDSTR12U(0, 0, 2)
+
+	case AMOVBU:
+		return LDSTR12U(0, 0, 1)
+
+	case AFMOVS:
+		return LDSTR12U(2, 1, 1)
+
+	case AFMOVD:
+		return LDSTR12U(3, 1, 1)
+	}
+
+	ctxt.Diag("bad opldr12 %v\n%v", a, ctxt.Curp)
+	return 0
+}
+
+func opstr12(ctxt *obj.Link, a obj.As) uint32 {
+	return LD2STR(opldr12(ctxt, a))
+}
+
+/*
+ * load/store register (unscaled immediate) C3.3.12
+ */
+func olsr9s(ctxt *obj.Link, o int32, v int32, b int, r int) uint32 {
+	if v < -256 || v > 255 {
+		ctxt.Diag("offset out of range: %d\n%v", v, ctxt.Curp)
+	}
+	o |= (v & 0x1FF) << 12
+	o |= int32(b&31) << 5
+	o |= int32(r & 31)
+	return uint32(o)
+}
+
+func opldr9(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVD:
+		return LDSTR9S(3, 0, 1) /* simm9<<12 | Rn<<5 | Rt */
+
+	case AMOVW:
+		return LDSTR9S(2, 0, 2)
+
+	case AMOVWU:
+		return LDSTR9S(2, 0, 1)
+
+	case AMOVH:
+		return LDSTR9S(1, 0, 2)
+
+	case AMOVHU:
+		return LDSTR9S(1, 0, 1)
+
+	case AMOVB:
+		return LDSTR9S(0, 0, 2)
+
+	case AMOVBU:
+		return LDSTR9S(0, 0, 1)
+
+	case AFMOVS:
+		return LDSTR9S(2, 1, 1)
+
+	case AFMOVD:
+		return LDSTR9S(3, 1, 1)
+	}
+
+	ctxt.Diag("bad opldr9 %v\n%v", a, ctxt.Curp)
+	return 0
+}
+
+func opstr9(ctxt *obj.Link, a obj.As) uint32 {
+	return LD2STR(opldr9(ctxt, a))
+}
+
+func opldrpp(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVD:
+		return 3<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22 /* simm9<<12 | Rn<<5 | Rt */
+
+	case AMOVW:
+		return 2<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22
+
+	case AMOVWU:
+		return 2<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22
+
+	case AMOVH:
+		return 1<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22
+
+	case AMOVHU:
+		return 1<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22
+
+	case AMOVB:
+		return 0<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22
+
+	case AMOVBU:
+		return 0<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22
+	}
+
+	ctxt.Diag("bad opldr %v\n%v", a, ctxt.Curp)
+	return 0
+}
+
+/*
+ * load/store register (extended register)
+ */
+func olsxrr(ctxt *obj.Link, as obj.As, rt int, r1 int, r2 int) uint32 {
+	ctxt.Diag("need load/store extended register\n%v", ctxt.Curp)
+	return 0xffffffff
+}
+
+func oaddi(ctxt *obj.Link, o1 int32, v int32, r int, rt int) uint32 {
+	if (v & 0xFFF000) != 0 {
+		if v&0xFFF != 0 {
+			ctxt.Diag("%v misuses oaddi", ctxt.Curp)
+		}
+		v >>= 12
+		o1 |= 1 << 22
+	}
+
+	o1 |= ((v & 0xFFF) << 10) | (int32(r&31) << 5) | int32(rt&31)
+	return uint32(o1)
+}
+
+/*
+ * load a a literal value into dr
+ */
+func omovlit(ctxt *obj.Link, as obj.As, p *obj.Prog, a *obj.Addr, dr int) uint32 {
+	var o1 int32
+	if p.Pcond == nil { /* not in literal pool */
+		aclass(ctxt, a)
+		ctxt.Logf("omovlit add %d (%#x)\n", ctxt.Instoffset, uint64(ctxt.Instoffset))
+
+		/* TODO: could be clever, and use general constant builder */
+		o1 = int32(opirr(ctxt, AADD))
+
+		v := int32(ctxt.Instoffset)
+		if v != 0 && (v&0xFFF) == 0 {
+			v >>= 12
+			o1 |= 1 << 22 /* shift, by 12 */
+		}
+
+		o1 |= ((v & 0xFFF) << 10) | (REGZERO & 31 << 5) | int32(dr&31)
+	} else {
+		fp := 0
+		w := 0 /* default: 32 bit, unsigned */
+		switch as {
+		case AFMOVS:
+			fp = 1
+
+		case AFMOVD:
+			fp = 1
+			w = 1 /* 64 bit simd&fp */
+
+		case AMOVD:
+			if p.Pcond.As == ADWORD {
+				w = 1 /* 64 bit */
+			} else if p.Pcond.To.Offset < 0 {
+				w = 2 /* sign extend */
+			}
+
+		case AMOVB, AMOVH, AMOVW:
+			w = 2 /* 32 bit, sign-extended to 64 */
+			break
+		}
+
+		v := int32(brdist(ctxt, p, 0, 19, 2))
+		o1 = (int32(w) << 30) | (int32(fp) << 26) | (3 << 27)
+		o1 |= (v & 0x7FFFF) << 5
+		o1 |= int32(dr & 31)
+	}
+
+	return uint32(o1)
+}
+
+// load a constant (MOVCON or BITCON) in a into rt
+func omovconst(ctxt *obj.Link, as obj.As, p *obj.Prog, a *obj.Addr, rt int) (o1 uint32) {
+	if c := oclass(a); c == C_BITCON || c == C_ABCON || c == C_ABCON0 {
+		// or $bitcon, REGZERO, rt
+		mode := 64
+		var as1 obj.As
+		switch as {
+		case AMOVW:
+			as1 = AORRW
+			mode = 32
+		case AMOVD:
+			as1 = AORR
+		}
+		o1 = opirr(ctxt, as1)
+		o1 |= bitconEncode(uint64(a.Offset), mode) | uint32(REGZERO&31)<<5 | uint32(rt&31)
+		return o1
+	}
+
+	r := 32
+	if as == AMOVD {
+		r = 64
+	}
+	d := a.Offset
+	s := movcon(d)
+	if s < 0 || s >= r {
+		d = ^d
+		s = movcon(d)
+		if s < 0 || s >= r {
+			ctxt.Diag("impossible move wide: %#x\n%v", uint64(a.Offset), p)
+		}
+		if as == AMOVD {
+			o1 = opirr(ctxt, AMOVN)
+		} else {
+			o1 = opirr(ctxt, AMOVNW)
+		}
+	} else {
+		if as == AMOVD {
+			o1 = opirr(ctxt, AMOVZ)
+		} else {
+			o1 = opirr(ctxt, AMOVZW)
+		}
+	}
+	o1 |= uint32((((d >> uint(s*16)) & 0xFFFF) << 5) | int64((uint32(s)&3)<<21) | int64(rt&31))
+	return o1
+}
+
+func opbfm(ctxt *obj.Link, a obj.As, r int, s int, rf int, rt int) uint32 {
+	var c uint32
+	o := opirr(ctxt, a)
+	if (o & (1 << 31)) == 0 {
+		c = 32
+	} else {
+		c = 64
+	}
+	if r < 0 || uint32(r) >= c {
+		ctxt.Diag("illegal bit number\n%v", ctxt.Curp)
+	}
+	o |= (uint32(r) & 0x3F) << 16
+	if s < 0 || uint32(s) >= c {
+		ctxt.Diag("illegal bit number\n%v", ctxt.Curp)
+	}
+	o |= (uint32(s) & 0x3F) << 10
+	o |= (uint32(rf&31) << 5) | uint32(rt&31)
+	return o
+}
+
+func opextr(ctxt *obj.Link, a obj.As, v int32, rn int, rm int, rt int) uint32 {
+	var c uint32
+	o := opirr(ctxt, a)
+	if (o & (1 << 31)) != 0 {
+		c = 63
+	} else {
+		c = 31
+	}
+	if v < 0 || uint32(v) > c {
+		ctxt.Diag("illegal bit number\n%v", ctxt.Curp)
+	}
+	o |= uint32(v) << 10
+	o |= uint32(rn&31) << 5
+	o |= uint32(rm&31) << 16
+	o |= uint32(rt & 31)
+	return o
+}
+
+/*
+ * size in log2(bytes)
+ */
+func movesize(a obj.As) int {
+	switch a {
+	case AMOVD:
+		return 3
+
+	case AMOVW, AMOVWU:
+		return 2
+
+	case AMOVH, AMOVHU:
+		return 1
+
+	case AMOVB, AMOVBU:
+		return 0
+
+	case AFMOVS:
+		return 2
+
+	case AFMOVD:
+		return 3
+
+	default:
+		return -1
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/list7.go b/vendor/github.com/google/gops/internal/obj/arm64/list7.go
new file mode 100644
index 00000000..01971b85
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm64/list7.go
@@ -0,0 +1,115 @@
+// cmd/7l/list.c and cmd/7l/sub.c from Vita Nuova.
+// https://code.google.com/p/ken-cc/source/browse/
+//
+// 	Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// 	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// 	Portions Copyright © 1997-1999 Vita Nuova Limited
+// 	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// 	Portions Copyright © 2004,2006 Bruce Ellis
+// 	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// 	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// 	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm64
+
+import (
+	"fmt"
+
+	"github.com/google/gops/internal/obj"
+)
+
+var strcond = [16]string{
+	"EQ",
+	"NE",
+	"HS",
+	"LO",
+	"MI",
+	"PL",
+	"VS",
+	"VC",
+	"HI",
+	"LS",
+	"GE",
+	"LT",
+	"GT",
+	"LE",
+	"AL",
+	"NV",
+}
+
+func init() {
+	obj.RegisterRegister(obj.RBaseARM64, REG_SPECIAL+1024, Rconv)
+	obj.RegisterOpcode(obj.ABaseARM64, Anames)
+}
+
+func Rconv(r int) string {
+	if r == REGG {
+		return "g"
+	}
+	switch {
+	case REG_R0 <= r && r <= REG_R30:
+		return fmt.Sprintf("R%d", r-REG_R0)
+	case r == REG_R31:
+		return "ZR"
+	case REG_F0 <= r && r <= REG_F31:
+		return fmt.Sprintf("F%d", r-REG_F0)
+	case REG_V0 <= r && r <= REG_V31:
+		return fmt.Sprintf("V%d", r-REG_V0)
+	case COND_EQ <= r && r <= COND_NV:
+		return strcond[r-COND_EQ]
+	case r == REGSP:
+		return "RSP"
+	case r == REG_DAIF:
+		return "DAIF"
+	case r == REG_NZCV:
+		return "NZCV"
+	case r == REG_FPSR:
+		return "FPSR"
+	case r == REG_FPCR:
+		return "FPCR"
+	case r == REG_SPSR_EL1:
+		return "SPSR_EL1"
+	case r == REG_ELR_EL1:
+		return "ELR_EL1"
+	case r == REG_SPSR_EL2:
+		return "SPSR_EL2"
+	case r == REG_ELR_EL2:
+		return "ELR_EL2"
+	case r == REG_CurrentEL:
+		return "CurrentEL"
+	case r == REG_SP_EL0:
+		return "SP_EL0"
+	case r == REG_SPSel:
+		return "SPSel"
+	case r == REG_DAIFSet:
+		return "DAIFSet"
+	case r == REG_DAIFClr:
+		return "DAIFClr"
+	}
+	return fmt.Sprintf("badreg(%d)", r)
+}
+
+func DRconv(a int) string {
+	if a >= C_NONE && a <= C_NCLASS {
+		return cnames7[a]
+	}
+	return "C_??"
+}
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/obj7.go b/vendor/github.com/google/gops/internal/obj/arm64/obj7.go
new file mode 100644
index 00000000..2d9d1aa7
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/arm64/obj7.go
@@ -0,0 +1,1005 @@
+// cmd/7l/noop.c, cmd/7l/obj.c, cmd/ld/pass.c from Vita Nuova.
+// https://code.google.com/p/ken-cc/source/browse/
+//
+// 	Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+// 	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+// 	Portions Copyright © 1997-1999 Vita Nuova Limited
+// 	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+// 	Portions Copyright © 2004,2006 Bruce Ellis
+// 	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+// 	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+// 	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm64
+
+import (
+	"fmt"
+	"log"
+	"math"
+
+	"github.com/google/gops/internal/obj"
+	"github.com/google/gops/internal/sys"
+)
+
+var complements = []obj.As{
+	AADD:  ASUB,
+	AADDW: ASUBW,
+	ASUB:  AADD,
+	ASUBW: AADDW,
+	ACMP:  ACMN,
+	ACMPW: ACMNW,
+	ACMN:  ACMP,
+	ACMNW: ACMPW,
+}
+
+func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
+	// MOV	g_stackguard(g), R1
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVD
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REGG
+	p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+	if ctxt.Cursym.CFunc() {
+		p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+	}
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R1
+
+	q := (*obj.Prog)(nil)
+	if framesize <= obj.StackSmall {
+		// small stack: SP < stackguard
+		//	MOV	SP, R2
+		//	CMP	stackguard, R2
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.Reg = REG_R2
+	} else if framesize <= obj.StackBig {
+		// large stack: SP-framesize < stackguard-StackSmall
+		//	SUB	$framesize, SP, R2
+		//	CMP	stackguard, R2
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ASUB
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(framesize)
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.Reg = REG_R2
+	} else {
+		// Such a large stack we need to protect against wraparound
+		// if SP is close to zero.
+		//	SP-stackguard+StackGuard < framesize + (StackGuard-StackSmall)
+		// The +StackGuard on both sides is required to keep the left side positive:
+		// SP is allowed to be slightly below stackguard. See stack.h.
+		//	CMP	$StackPreempt, R1
+		//	BEQ	label_of_call_to_morestack
+		//	ADD	$StackGuard, SP, R2
+		//	SUB	R1, R2
+		//	MOV	$(framesize+(StackGuard-StackSmall)), R3
+		//	CMP	R3, R2
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ACMP
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = obj.StackPreempt
+		p.Reg = REG_R1
+
+		p = obj.Appendp(ctxt, p)
+		q = p
+		p.As = ABEQ
+		p.To.Type = obj.TYPE_BRANCH
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AADD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = obj.StackGuard
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASUB
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(framesize) + (obj.StackGuard - obj.StackSmall)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R3
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.Reg = REG_R2
+	}
+
+	// BLS	do-morestack
+	bls := obj.Appendp(ctxt, p)
+	bls.As = ABLS
+	bls.To.Type = obj.TYPE_BRANCH
+
+	var last *obj.Prog
+	for last = ctxt.Cursym.Text; last.Link != nil; last = last.Link {
+	}
+
+	// Now we are at the end of the function, but logically
+	// we are still in function prologue. We need to fix the
+	// SP data and PCDATA.
+	spfix := obj.Appendp(ctxt, last)
+	spfix.As = obj.ANOP
+	spfix.Spadj = -framesize
+
+	pcdata := obj.Appendp(ctxt, spfix)
+	pcdata.Lineno = ctxt.Cursym.Text.Lineno
+	pcdata.Mode = ctxt.Cursym.Text.Mode
+	pcdata.As = obj.APCDATA
+	pcdata.From.Type = obj.TYPE_CONST
+	pcdata.From.Offset = obj.PCDATA_StackMapIndex
+	pcdata.To.Type = obj.TYPE_CONST
+	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+
+	// MOV	LR, R3
+	movlr := obj.Appendp(ctxt, pcdata)
+	movlr.As = AMOVD
+	movlr.From.Type = obj.TYPE_REG
+	movlr.From.Reg = REGLINK
+	movlr.To.Type = obj.TYPE_REG
+	movlr.To.Reg = REG_R3
+	if q != nil {
+		q.Pcond = movlr
+	}
+	bls.Pcond = movlr
+
+	debug := movlr
+	if false {
+		debug = obj.Appendp(ctxt, debug)
+		debug.As = AMOVD
+		debug.From.Type = obj.TYPE_CONST
+		debug.From.Offset = int64(framesize)
+		debug.To.Type = obj.TYPE_REG
+		debug.To.Reg = REGTMP
+	}
+
+	// BL	runtime.morestack(SB)
+	call := obj.Appendp(ctxt, debug)
+	call.As = ABL
+	call.To.Type = obj.TYPE_BRANCH
+	morestack := "runtime.morestack"
+	switch {
+	case ctxt.Cursym.CFunc():
+		morestack = "runtime.morestackc"
+	case ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0:
+		morestack = "runtime.morestack_noctxt"
+	}
+	call.To.Sym = obj.Linklookup(ctxt, morestack, 0)
+
+	// B	start
+	jmp := obj.Appendp(ctxt, call)
+	jmp.As = AB
+	jmp.To.Type = obj.TYPE_BRANCH
+	jmp.Pcond = ctxt.Cursym.Text.Link
+	jmp.Spadj = +framesize
+
+	// placeholder for bls's jump target
+	// p = obj.Appendp(ctxt, p)
+	// p.As = obj.ANOP
+
+	return bls
+}
+
+func progedit(ctxt *obj.Link, p *obj.Prog) {
+	p.From.Class = 0
+	p.To.Class = 0
+
+	// $0 results in C_ZCON, which matches both C_REG and various
+	// C_xCON, however the C_REG cases in asmout don't expect a
+	// constant, so they will use the register fields and assemble
+	// a R0. To prevent that, rewrite $0 as ZR.
+	if p.From.Type == obj.TYPE_CONST && p.From.Offset == 0 {
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGZERO
+	}
+	if p.To.Type == obj.TYPE_CONST && p.To.Offset == 0 {
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGZERO
+	}
+
+	// Rewrite BR/BL to symbol as TYPE_BRANCH.
+	switch p.As {
+	case AB,
+		ABL,
+		obj.ARET,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		if p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+		break
+	}
+
+	// Rewrite float constants to values stored in memory.
+	switch p.As {
+	case AFMOVS:
+		if p.From.Type == obj.TYPE_FCONST {
+			f32 := float32(p.From.Val.(float64))
+			i32 := math.Float32bits(f32)
+			if i32 == 0 {
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGZERO
+				break
+			}
+			literal := fmt.Sprintf("$f32.%08x", i32)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 4
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+	case AFMOVD:
+		if p.From.Type == obj.TYPE_FCONST {
+			i64 := math.Float64bits(p.From.Val.(float64))
+			if i64 == 0 {
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGZERO
+				break
+			}
+			literal := fmt.Sprintf("$f64.%016x", i64)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 8
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+		break
+	}
+
+	// Rewrite negative immediates as positive immediates with
+	// complementary instruction.
+	switch p.As {
+	case AADD, ASUB, ACMP, ACMN:
+		if p.From.Type == obj.TYPE_CONST && p.From.Offset < 0 && p.From.Offset != -1<<63 {
+			p.From.Offset = -p.From.Offset
+			p.As = complements[p.As]
+		}
+	case AADDW, ASUBW, ACMPW, ACMNW:
+		if p.From.Type == obj.TYPE_CONST && p.From.Offset < 0 && int32(p.From.Offset) != -1<<31 {
+			p.From.Offset = -p.From.Offset
+			p.As = complements[p.As]
+		}
+	}
+
+	// For 32-bit logical instruction with constant,
+	// rewrite the high 32-bit to be a repetition of
+	// the low 32-bit, so that the BITCON test can be
+	// shared for both 32-bit and 64-bit. 32-bit ops
+	// will zero the high 32-bit of the destination
+	// register anyway.
+	switch p.As {
+	case AANDW, AORRW, AEORW, AANDSW:
+		if p.From.Type == obj.TYPE_CONST {
+			v := p.From.Offset & 0xffffffff
+			p.From.Offset = v | v<<32
+		}
+	}
+
+	if ctxt.Flag_dynlink {
+		rewriteToUseGot(ctxt, p)
+	}
+}
+
+// Rewrite p, if necessary, to access global data via the global offset table.
+func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog) {
+	if p.As == obj.ADUFFCOPY || p.As == obj.ADUFFZERO {
+		//     ADUFFxxx $offset
+		// becomes
+		//     MOVD runtime.duffxxx@GOT, REGTMP
+		//     ADD $offset, REGTMP
+		//     CALL REGTMP
+		var sym *obj.LSym
+		if p.As == obj.ADUFFZERO {
+			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+		} else {
+			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+		}
+		offset := p.To.Offset
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		p.From.Sym = sym
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGTMP
+		p.To.Name = obj.NAME_NONE
+		p.To.Offset = 0
+		p.To.Sym = nil
+		p1 := obj.Appendp(ctxt, p)
+		p1.As = AADD
+		p1.From.Type = obj.TYPE_CONST
+		p1.From.Offset = offset
+		p1.To.Type = obj.TYPE_REG
+		p1.To.Reg = REGTMP
+		p2 := obj.Appendp(ctxt, p1)
+		p2.As = obj.ACALL
+		p2.To.Type = obj.TYPE_REG
+		p2.To.Reg = REGTMP
+	}
+
+	// We only care about global data: NAME_EXTERN means a global
+	// symbol in the Go sense, and p.Sym.Local is true for a few
+	// internally defined symbols.
+	if p.From.Type == obj.TYPE_ADDR && p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		// MOVD $sym, Rx becomes MOVD sym@GOT, Rx
+		// MOVD $sym+<off>, Rx becomes MOVD sym@GOT, Rx; ADD <off>, Rx
+		if p.As != AMOVD {
+			ctxt.Diag("do not know how to handle TYPE_ADDR in %v with -dynlink", p)
+		}
+		if p.To.Type != obj.TYPE_REG {
+			ctxt.Diag("do not know how to handle LEAQ-type insn to non-register in %v with -dynlink", p)
+		}
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		if p.From.Offset != 0 {
+			q := obj.Appendp(ctxt, p)
+			q.As = AADD
+			q.From.Type = obj.TYPE_CONST
+			q.From.Offset = p.From.Offset
+			q.To = p.To
+			p.From.Offset = 0
+		}
+	}
+	if p.From3 != nil && p.From3.Name == obj.NAME_EXTERN {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	var source *obj.Addr
+	// MOVx sym, Ry becomes MOVD sym@GOT, REGTMP; MOVx (REGTMP), Ry
+	// MOVx Ry, sym becomes MOVD sym@GOT, REGTMP; MOVD Ry, (REGTMP)
+	// An addition may be inserted between the two MOVs if there is an offset.
+	if p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+			ctxt.Diag("cannot handle NAME_EXTERN on both sides in %v with -dynlink", p)
+		}
+		source = &p.From
+	} else if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+		source = &p.To
+	} else {
+		return
+	}
+	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP {
+		return
+	}
+	if source.Sym.Type == obj.STLSBSS {
+		return
+	}
+	if source.Type != obj.TYPE_MEM {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	p1 := obj.Appendp(ctxt, p)
+	p2 := obj.Appendp(ctxt, p1)
+	p1.As = AMOVD
+	p1.From.Type = obj.TYPE_MEM
+	p1.From.Sym = source.Sym
+	p1.From.Name = obj.NAME_GOTREF
+	p1.To.Type = obj.TYPE_REG
+	p1.To.Reg = REGTMP
+
+	p2.As = p.As
+	p2.From = p.From
+	p2.To = p.To
+	if p.From.Name == obj.NAME_EXTERN {
+		p2.From.Reg = REGTMP
+		p2.From.Name = obj.NAME_NONE
+		p2.From.Sym = nil
+	} else if p.To.Name == obj.NAME_EXTERN {
+		p2.To.Reg = REGTMP
+		p2.To.Name = obj.NAME_NONE
+		p2.To.Sym = nil
+	} else {
+		return
+	}
+	obj.Nopout(p)
+}
+
+func follow(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	firstp := ctxt.NewProg()
+	lastp := firstp
+	xfol(ctxt, s.Text, &lastp)
+	lastp.Link = nil
+	s.Text = firstp.Link
+}
+
+func relinv(a obj.As) obj.As {
+	switch a {
+	case ABEQ:
+		return ABNE
+	case ABNE:
+		return ABEQ
+	case ABCS:
+		return ABCC
+	case ABHS:
+		return ABLO
+	case ABCC:
+		return ABCS
+	case ABLO:
+		return ABHS
+	case ABMI:
+		return ABPL
+	case ABPL:
+		return ABMI
+	case ABVS:
+		return ABVC
+	case ABVC:
+		return ABVS
+	case ABHI:
+		return ABLS
+	case ABLS:
+		return ABHI
+	case ABGE:
+		return ABLT
+	case ABLT:
+		return ABGE
+	case ABGT:
+		return ABLE
+	case ABLE:
+		return ABGT
+	case ACBZ:
+		return ACBNZ
+	case ACBNZ:
+		return ACBZ
+	case ACBZW:
+		return ACBNZW
+	case ACBNZW:
+		return ACBZW
+	}
+
+	log.Fatalf("unknown relation: %s", Anames[a-obj.ABaseARM64])
+	return 0
+}
+
+func xfol(ctxt *obj.Link, p *obj.Prog, last **obj.Prog) {
+	var q *obj.Prog
+	var r *obj.Prog
+	var i int
+
+loop:
+	if p == nil {
+		return
+	}
+	a := p.As
+	if a == AB {
+		q = p.Pcond
+		if q != nil {
+			p.Mark |= FOLL
+			p = q
+			if !(p.Mark&FOLL != 0) {
+				goto loop
+			}
+		}
+	}
+
+	if p.Mark&FOLL != 0 {
+		i = 0
+		q = p
+		for ; i < 4; i, q = i+1, q.Link {
+			if q == *last || q == nil {
+				break
+			}
+			a = q.As
+			if a == obj.ANOP {
+				i--
+				continue
+			}
+
+			if a == AB || a == obj.ARET || a == AERET {
+				goto copy
+			}
+			if q.Pcond == nil || (q.Pcond.Mark&FOLL != 0) {
+				continue
+			}
+			if a != ABEQ && a != ABNE {
+				continue
+			}
+
+		copy:
+			for {
+				r = ctxt.NewProg()
+				*r = *p
+				if !(r.Mark&FOLL != 0) {
+					fmt.Printf("can't happen 1\n")
+				}
+				r.Mark |= FOLL
+				if p != q {
+					p = p.Link
+					(*last).Link = r
+					*last = r
+					continue
+				}
+
+				(*last).Link = r
+				*last = r
+				if a == AB || a == obj.ARET || a == AERET {
+					return
+				}
+				if a == ABNE {
+					r.As = ABEQ
+				} else {
+					r.As = ABNE
+				}
+				r.Pcond = p.Link
+				r.Link = p.Pcond
+				if !(r.Link.Mark&FOLL != 0) {
+					xfol(ctxt, r.Link, last)
+				}
+				if !(r.Pcond.Mark&FOLL != 0) {
+					fmt.Printf("can't happen 2\n")
+				}
+				return
+			}
+		}
+
+		a = AB
+		q = ctxt.NewProg()
+		q.As = a
+		q.Lineno = p.Lineno
+		q.To.Type = obj.TYPE_BRANCH
+		q.To.Offset = p.Pc
+		q.Pcond = p
+		p = q
+	}
+
+	p.Mark |= FOLL
+	(*last).Link = p
+	*last = p
+	if a == AB || a == obj.ARET || a == AERET {
+		return
+	}
+	if p.Pcond != nil {
+		if a != ABL && p.Link != nil {
+			q = obj.Brchain(ctxt, p.Link)
+			if a != obj.ATEXT {
+				if q != nil && (q.Mark&FOLL != 0) {
+					p.As = relinv(a)
+					p.Link = p.Pcond
+					p.Pcond = q
+				}
+			}
+
+			xfol(ctxt, p.Link, last)
+			q = obj.Brchain(ctxt, p.Pcond)
+			if q == nil {
+				q = p.Pcond
+			}
+			if q.Mark&FOLL != 0 {
+				p.Pcond = q
+				return
+			}
+
+			p = q
+			goto loop
+		}
+	}
+
+	p = p.Link
+	goto loop
+}
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
+	ctxt.Cursym = cursym
+
+	if cursym.Text == nil || cursym.Text.Link == nil {
+		return
+	}
+
+	p := cursym.Text
+	textstksiz := p.To.Offset
+	aoffset := int32(textstksiz)
+
+	cursym.Args = p.To.Val.(int32)
+	cursym.Locals = int32(textstksiz)
+
+	/*
+	 * find leaf subroutines
+	 * strip NOPs
+	 * expand RET
+	 */
+	q := (*obj.Prog)(nil)
+	var q1 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		switch p.As {
+		case obj.ATEXT:
+			p.Mark |= LEAF
+
+		case obj.ARET:
+			break
+
+		case obj.ANOP:
+			q1 = p.Link
+			q.Link = q1 /* q is non-nop */
+			q1.Mark |= p.Mark
+			continue
+
+		case ABL,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			cursym.Text.Mark &^= LEAF
+			fallthrough
+
+		case ACBNZ,
+			ACBZ,
+			ACBNZW,
+			ACBZW,
+			ATBZ,
+			ATBNZ,
+			AB,
+			ABEQ,
+			ABNE,
+			ABCS,
+			ABHS,
+			ABCC,
+			ABLO,
+			ABMI,
+			ABPL,
+			ABVS,
+			ABVC,
+			ABHI,
+			ABLS,
+			ABGE,
+			ABLT,
+			ABGT,
+			ABLE,
+			AADR, /* strange */
+			AADRP:
+			q1 = p.Pcond
+
+			if q1 != nil {
+				for q1.As == obj.ANOP {
+					q1 = q1.Link
+					p.Pcond = q1
+				}
+			}
+
+			break
+		}
+
+		q = p
+	}
+
+	var q2 *obj.Prog
+	var retjmp *obj.LSym
+	for p := cursym.Text; p != nil; p = p.Link {
+		o := p.As
+		switch o {
+		case obj.ATEXT:
+			cursym.Text = p
+			if textstksiz < 0 {
+				ctxt.Autosize = 0
+			} else {
+				ctxt.Autosize = int32(textstksiz + 8)
+			}
+			if (cursym.Text.Mark&LEAF != 0) && ctxt.Autosize <= 8 {
+				ctxt.Autosize = 0
+			} else if ctxt.Autosize&(16-1) != 0 {
+				// The frame includes an LR.
+				// If the frame size is 8, it's only an LR,
+				// so there's no potential for breaking references to
+				// local variables by growing the frame size,
+				// because there are no local variables.
+				// But otherwise, if there is a non-empty locals section,
+				// the author of the code is responsible for making sure
+				// that the frame size is 8 mod 16.
+				if ctxt.Autosize == 8 {
+					ctxt.Autosize += 8
+					cursym.Locals += 8
+				} else {
+					ctxt.Diag("%v: unaligned frame size %d - must be 8 mod 16 (or 0)", p, ctxt.Autosize-8)
+				}
+			}
+			p.To.Offset = int64(ctxt.Autosize) - 8
+			if ctxt.Autosize == 0 && !(cursym.Text.Mark&LEAF != 0) {
+				if ctxt.Debugvlog != 0 {
+					ctxt.Logf("save suppressed in: %s\n", cursym.Text.From.Sym.Name)
+				}
+				cursym.Text.Mark |= LEAF
+			}
+
+			if !(p.From3.Offset&obj.NOSPLIT != 0) {
+				p = stacksplit(ctxt, p, ctxt.Autosize) // emit split check
+			}
+
+			aoffset = ctxt.Autosize
+			if aoffset > 0xF0 {
+				aoffset = 0xF0
+			}
+			if cursym.Text.Mark&LEAF != 0 {
+				cursym.Set(obj.AttrLeaf, true)
+				if ctxt.Autosize == 0 {
+					break
+				}
+			}
+
+			// Frame is non-empty. Make sure to save link register, even if
+			// it is a leaf function, so that traceback works.
+			q = p
+			if ctxt.Autosize > aoffset {
+				// Frame size is too large for a MOVD.W instruction.
+				// Store link register before decrementing SP, so if a signal comes
+				// during the execution of the function prologue, the traceback
+				// code will not see a half-updated stack frame.
+				q = obj.Appendp(ctxt, q)
+				q.Lineno = p.Lineno
+				q.As = ASUB
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(ctxt.Autosize)
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGTMP
+
+				q = obj.Appendp(ctxt, q)
+				q.Lineno = p.Lineno
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REGLINK
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REGTMP
+
+				q1 = obj.Appendp(ctxt, q)
+				q1.Lineno = p.Lineno
+				q1.As = AMOVD
+				q1.From.Type = obj.TYPE_REG
+				q1.From.Reg = REGTMP
+				q1.To.Type = obj.TYPE_REG
+				q1.To.Reg = REGSP
+				q1.Spadj = ctxt.Autosize
+			} else {
+				// small frame, update SP and save LR in a single MOVD.W instruction
+				q1 = obj.Appendp(ctxt, q)
+				q1.As = AMOVD
+				q1.Lineno = p.Lineno
+				q1.From.Type = obj.TYPE_REG
+				q1.From.Reg = REGLINK
+				q1.To.Type = obj.TYPE_MEM
+				q1.Scond = C_XPRE
+				q1.To.Offset = int64(-aoffset)
+				q1.To.Reg = REGSP
+				q1.Spadj = aoffset
+			}
+
+			if cursym.Text.From3.Offset&obj.WRAPPER != 0 {
+				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+				//
+				//	MOV g_panic(g), R1
+				//	CMP ZR, R1
+				//	BEQ end
+				//	MOV panic_argp(R1), R2
+				//	ADD $(autosize+8), RSP, R3
+				//	CMP R2, R3
+				//	BNE end
+				//	ADD $8, RSP, R4
+				//	MOVD R4, panic_argp(R1)
+				// end:
+				//	NOP
+				//
+				// The NOP is needed to give the jumps somewhere to land.
+				// It is a liblink NOP, not a ARM64 NOP: it encodes to 0 instruction bytes.
+				q = q1
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REGG
+				q.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R1
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ACMP
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REGZERO
+				q.Reg = REG_R1
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABEQ
+				q.To.Type = obj.TYPE_BRANCH
+				q1 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REG_R1
+				q.From.Offset = 0 // Panic.argp
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R2
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(ctxt.Autosize) + 8
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R3
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ACMP
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R2
+				q.Reg = REG_R3
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABNE
+				q.To.Type = obj.TYPE_BRANCH
+				q2 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = 8
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R4
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R4
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REG_R1
+				q.To.Offset = 0 // Panic.argp
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = obj.ANOP
+				q1.Pcond = q
+				q2.Pcond = q
+			}
+
+		case obj.ARET:
+			nocache(p)
+			if p.From.Type == obj.TYPE_CONST {
+				ctxt.Diag("using BECOME (%v) is not supported!", p)
+				break
+			}
+
+			retjmp = p.To.Sym
+			p.To = obj.Addr{}
+			if cursym.Text.Mark&LEAF != 0 {
+				if ctxt.Autosize != 0 {
+					p.As = AADD
+					p.From.Type = obj.TYPE_CONST
+					p.From.Offset = int64(ctxt.Autosize)
+					p.To.Type = obj.TYPE_REG
+					p.To.Reg = REGSP
+					p.Spadj = -ctxt.Autosize
+				}
+			} else {
+				/* want write-back pre-indexed SP+autosize -> SP, loading REGLINK*/
+				aoffset = ctxt.Autosize
+
+				if aoffset > 0xF0 {
+					aoffset = 0xF0
+				}
+				p.As = AMOVD
+				p.From.Type = obj.TYPE_MEM
+				p.Scond = C_XPOST
+				p.From.Offset = int64(aoffset)
+				p.From.Reg = REGSP
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGLINK
+				p.Spadj = -aoffset
+				if ctxt.Autosize > aoffset {
+					q = ctxt.NewProg()
+					q.As = AADD
+					q.From.Type = obj.TYPE_CONST
+					q.From.Offset = int64(ctxt.Autosize) - int64(aoffset)
+					q.To.Type = obj.TYPE_REG
+					q.To.Reg = REGSP
+					q.Link = p.Link
+					q.Spadj = int32(-q.From.Offset)
+					q.Lineno = p.Lineno
+					p.Link = q
+					p = q
+				}
+			}
+
+			if p.As != obj.ARET {
+				q = ctxt.NewProg()
+				q.Lineno = p.Lineno
+				q.Link = p.Link
+				p.Link = q
+				p = q
+			}
+
+			if retjmp != nil { // retjmp
+				p.As = AB
+				p.To.Type = obj.TYPE_BRANCH
+				p.To.Sym = retjmp
+				p.Spadj = +ctxt.Autosize
+				break
+			}
+
+			p.As = obj.ARET
+			p.To.Type = obj.TYPE_MEM
+			p.To.Offset = 0
+			p.To.Reg = REGLINK
+			p.Spadj = +ctxt.Autosize
+
+		case AADD, ASUB:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
+				if p.As == AADD {
+					p.Spadj = int32(-p.From.Offset)
+				} else {
+					p.Spadj = int32(+p.From.Offset)
+				}
+			}
+			break
+		}
+	}
+}
+
+func nocache(p *obj.Prog) {
+	p.Optab = 0
+	p.From.Class = 0
+	p.To.Class = 0
+}
+
+var unaryDst = map[obj.As]bool{
+	AWORD:  true,
+	ADWORD: true,
+	ABL:    true,
+	AB:     true,
+	ASVC:   true,
+}
+
+var Linkarm64 = obj.LinkArch{
+	Arch:       sys.ArchARM64,
+	Preprocess: preprocess,
+	Assemble:   span7,
+	Follow:     follow,
+	Progedit:   progedit,
+	UnaryDst:   unaryDst,
+}
diff --git a/vendor/github.com/google/gops/internal/obj/data.go b/vendor/github.com/google/gops/internal/obj/data.go
new file mode 100644
index 00000000..0ccb053f
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/data.go
@@ -0,0 +1,190 @@
+// Derived from Inferno utils/6l/obj.c and utils/6l/span.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package obj
+
+import (
+	"log"
+	"math"
+)
+
+// Grow increases the length of s.P to lsiz.
+func (s *LSym) Grow(lsiz int64) {
+	siz := int(lsiz)
+	if int64(siz) != lsiz {
+		log.Fatalf("LSym.Grow size %d too long", lsiz)
+	}
+	if len(s.P) >= siz {
+		return
+	}
+	// TODO(dfc) append cap-len at once, rather than
+	// one byte at a time.
+	for cap(s.P) < siz {
+		s.P = append(s.P[:cap(s.P)], 0)
+	}
+	s.P = s.P[:siz]
+}
+
+// GrowCap increases the capacity of s.P to c.
+func (s *LSym) GrowCap(c int64) {
+	if int64(cap(s.P)) >= c {
+		return
+	}
+	if s.P == nil {
+		s.P = make([]byte, 0, c)
+		return
+	}
+	b := make([]byte, len(s.P), c)
+	copy(b, s.P)
+	s.P = b
+}
+
+// prepwrite prepares to write data of size siz into s at offset off.
+func (s *LSym) prepwrite(ctxt *Link, off int64, siz int) {
+	if off < 0 || siz < 0 || off >= 1<<30 {
+		log.Fatalf("prepwrite: bad off=%d siz=%d", off, siz)
+	}
+	if s.Type == SBSS || s.Type == STLSBSS {
+		ctxt.Diag("cannot supply data for BSS var")
+	}
+	l := off + int64(siz)
+	s.Grow(l)
+	if l > s.Size {
+		s.Size = l
+	}
+}
+
+// WriteFloat32 writes f into s at offset off.
+func (s *LSym) WriteFloat32(ctxt *Link, off int64, f float32) {
+	s.prepwrite(ctxt, off, 4)
+	ctxt.Arch.ByteOrder.PutUint32(s.P[off:], math.Float32bits(f))
+}
+
+// WriteFloat64 writes f into s at offset off.
+func (s *LSym) WriteFloat64(ctxt *Link, off int64, f float64) {
+	s.prepwrite(ctxt, off, 8)
+	ctxt.Arch.ByteOrder.PutUint64(s.P[off:], math.Float64bits(f))
+}
+
+// WriteInt writes an integer i of size siz into s at offset off.
+func (s *LSym) WriteInt(ctxt *Link, off int64, siz int, i int64) {
+	s.prepwrite(ctxt, off, siz)
+	switch siz {
+	default:
+		ctxt.Diag("WriteInt: bad integer size: %d", siz)
+	case 1:
+		s.P[off] = byte(i)
+	case 2:
+		ctxt.Arch.ByteOrder.PutUint16(s.P[off:], uint16(i))
+	case 4:
+		ctxt.Arch.ByteOrder.PutUint32(s.P[off:], uint32(i))
+	case 8:
+		ctxt.Arch.ByteOrder.PutUint64(s.P[off:], uint64(i))
+	}
+}
+
+// WriteAddr writes an address of size siz into s at offset off.
+// rsym and roff specify the relocation for the address.
+func (s *LSym) WriteAddr(ctxt *Link, off int64, siz int, rsym *LSym, roff int64) {
+	if siz != ctxt.Arch.PtrSize {
+		ctxt.Diag("WriteAddr: bad address size %d in %s", siz, s.Name)
+	}
+	s.prepwrite(ctxt, off, siz)
+	r := Addrel(s)
+	r.Off = int32(off)
+	if int64(r.Off) != off {
+		ctxt.Diag("WriteAddr: off overflow %d in %s", off, s.Name)
+	}
+	r.Siz = uint8(siz)
+	r.Sym = rsym
+	r.Type = R_ADDR
+	r.Add = roff
+}
+
+// WriteOff writes a 4 byte offset to rsym+roff into s at offset off.
+// After linking the 4 bytes stored at s+off will be
+// rsym+roff-(start of section that s is in).
+func (s *LSym) WriteOff(ctxt *Link, off int64, rsym *LSym, roff int64) {
+	s.prepwrite(ctxt, off, 4)
+	r := Addrel(s)
+	r.Off = int32(off)
+	if int64(r.Off) != off {
+		ctxt.Diag("WriteOff: off overflow %d in %s", off, s.Name)
+	}
+	r.Siz = 4
+	r.Sym = rsym
+	r.Type = R_ADDROFF
+	r.Add = roff
+}
+
+// WriteString writes a string of size siz into s at offset off.
+func (s *LSym) WriteString(ctxt *Link, off int64, siz int, str string) {
+	if siz < len(str) {
+		ctxt.Diag("WriteString: bad string size: %d < %d", siz, len(str))
+	}
+	s.prepwrite(ctxt, off, siz)
+	copy(s.P[off:off+int64(siz)], str)
+}
+
+// WriteBytes writes a slice of bytes into s at offset off.
+func (s *LSym) WriteBytes(ctxt *Link, off int64, b []byte) int64 {
+	s.prepwrite(ctxt, off, len(b))
+	copy(s.P[off:], b)
+	return off + int64(len(b))
+}
+
+func Addrel(s *LSym) *Reloc {
+	s.R = append(s.R, Reloc{})
+	return &s.R[len(s.R)-1]
+}
+
+func Setuintxx(ctxt *Link, s *LSym, off int64, v uint64, wid int64) int64 {
+	if s.Type == 0 {
+		s.Type = SDATA
+	}
+	if s.Size < off+wid {
+		s.Size = off + wid
+		s.Grow(s.Size)
+	}
+
+	switch wid {
+	case 1:
+		s.P[off] = uint8(v)
+	case 2:
+		ctxt.Arch.ByteOrder.PutUint16(s.P[off:], uint16(v))
+	case 4:
+		ctxt.Arch.ByteOrder.PutUint32(s.P[off:], uint32(v))
+	case 8:
+		ctxt.Arch.ByteOrder.PutUint64(s.P[off:], v)
+	}
+
+	return off + wid
+}
diff --git a/vendor/github.com/google/gops/internal/obj/flag.go b/vendor/github.com/google/gops/internal/obj/flag.go
new file mode 100644
index 00000000..ff69fd9d
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/flag.go
@@ -0,0 +1,115 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strconv"
+)
+
+func Flagfn2(string, string, func(string, string)) { panic("flag") }
+
+func Flagcount(name, usage string, val *int) {
+	flag.Var((*count)(val), name, usage)
+}
+
+func Flagint32(name, usage string, val *int32) {
+	flag.Var((*int32Value)(val), name, usage)
+}
+
+func Flagint64(name, usage string, val *int64) {
+	flag.Int64Var(val, name, *val, usage)
+}
+
+func Flagstr(name, usage string, val *string) {
+	flag.StringVar(val, name, *val, usage)
+}
+
+func Flagfn0(name, usage string, f func()) {
+	flag.Var(fn0(f), name, usage)
+}
+
+func Flagfn1(name, usage string, f func(string)) {
+	flag.Var(fn1(f), name, usage)
+}
+
+func Flagprint(fd int) {
+	if fd == 1 {
+		flag.CommandLine.SetOutput(os.Stdout)
+	}
+	flag.PrintDefaults()
+}
+
+func Flagparse(usage func()) {
+	flag.Usage = usage
+	flag.Parse()
+}
+
+// count is a flag.Value that is like a flag.Bool and a flag.Int.
+// If used as -name, it increments the count, but -name=x sets the count.
+// Used for verbose flag -v.
+type count int
+
+func (c *count) String() string {
+	return fmt.Sprint(int(*c))
+}
+
+func (c *count) Set(s string) error {
+	switch s {
+	case "true":
+		*c++
+	case "false":
+		*c = 0
+	default:
+		n, err := strconv.Atoi(s)
+		if err != nil {
+			return fmt.Errorf("invalid count %q", s)
+		}
+		*c = count(n)
+	}
+	return nil
+}
+
+func (c *count) IsBoolFlag() bool {
+	return true
+}
+
+type int32Value int32
+
+func (i *int32Value) Set(s string) error {
+	v, err := strconv.ParseInt(s, 0, 64)
+	*i = int32Value(v)
+	return err
+}
+
+func (i *int32Value) Get() interface{} { return int32(*i) }
+
+func (i *int32Value) String() string { return fmt.Sprint(*i) }
+
+type fn0 func()
+
+func (f fn0) Set(s string) error {
+	f()
+	return nil
+}
+
+func (f fn0) Get() interface{} { return nil }
+
+func (f fn0) String() string { return "" }
+
+func (f fn0) IsBoolFlag() bool {
+	return true
+}
+
+type fn1 func(string)
+
+func (f fn1) Set(s string) error {
+	f(s)
+	return nil
+}
+
+func (f fn1) String() string { return "" }
diff --git a/vendor/github.com/google/gops/internal/obj/funcdata.go b/vendor/github.com/google/gops/internal/obj/funcdata.go
new file mode 100644
index 00000000..62256a3e
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/funcdata.go
@@ -0,0 +1,48 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+// This file defines the IDs for PCDATA and FUNCDATA instructions
+// in Go binaries. It is included by assembly sources, so it must
+// be written using #defines.
+//
+// The Go compiler also #includes this file, for now.
+//
+// symtab.go also contains a copy of these constants.
+
+// Pseudo-assembly statements.
+
+// GO_ARGS, GO_RESULTS_INITIALIZED, and NO_LOCAL_POINTERS are macros
+// that communicate to the runtime information about the location and liveness
+// of pointers in an assembly function's arguments, results, and stack frame.
+// This communication is only required in assembly functions that make calls
+// to other functions that might be preempted or grow the stack.
+// NOSPLIT functions that make no calls do not need to use these macros.
+
+// GO_ARGS indicates that the Go prototype for this assembly function
+// defines the pointer map for the function's arguments.
+// GO_ARGS should be the first instruction in a function that uses it.
+// It can be omitted if there are no arguments at all.
+// GO_ARGS is inserted implicitly by the linker for any function
+// that also has a Go prototype and therefore is usually not necessary
+// to write explicitly.
+
+// GO_RESULTS_INITIALIZED indicates that the assembly function
+// has initialized the stack space for its results and that those results
+// should be considered live for the remainder of the function.
+
+// NO_LOCAL_POINTERS indicates that the assembly function stores
+// no pointers to heap objects in its local stack variables.
+
+// ArgsSizeUnknown is set in Func.argsize to mark all functions
+// whose argument size is unknown (C vararg functions, and
+// assembly code without an explicit specification).
+// This value is generated by the compiler, assembler, or linker.
+const (
+	PCDATA_StackMapIndex       = 0
+	FUNCDATA_ArgsPointerMaps   = 0
+	FUNCDATA_LocalsPointerMaps = 1
+	ArgsSizeUnknown            = -0x80000000
+)
diff --git a/vendor/github.com/google/gops/internal/obj/go.go b/vendor/github.com/google/gops/internal/obj/go.go
new file mode 100644
index 00000000..1852dc74
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/go.go
@@ -0,0 +1,86 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+// go-specific code shared across loaders (5l, 6l, 8l).
+
+var (
+	framepointer_enabled int
+	Fieldtrack_enabled   int
+)
+
+// Toolchain experiments.
+// These are controlled by the GOEXPERIMENT environment
+// variable recorded when the toolchain is built.
+// This list is also known to cmd/gc.
+var exper = []struct {
+	name string
+	val  *int
+}{
+	{"fieldtrack", &Fieldtrack_enabled},
+	{"framepointer", &framepointer_enabled},
+}
+
+func addexp(s string) {
+	// Could do general integer parsing here, but the runtime copy doesn't yet.
+	v := 1
+	name := s
+	if len(name) > 2 && name[:2] == "no" {
+		v = 0
+		name = name[2:]
+	}
+	for i := 0; i < len(exper); i++ {
+		if exper[i].name == name {
+			if exper[i].val != nil {
+				*exper[i].val = v
+			}
+			return
+		}
+	}
+
+	fmt.Printf("unknown experiment %s\n", s)
+	os.Exit(2)
+}
+
+func init() {
+	framepointer_enabled = 1 // default
+	for _, f := range strings.Split(goexperiment, ",") {
+		if f != "" {
+			addexp(f)
+		}
+	}
+}
+
+func Framepointer_enabled(goos, goarch string) bool {
+	return framepointer_enabled != 0 && goarch == "amd64" && goos != "nacl"
+}
+
+func Nopout(p *Prog) {
+	p.As = ANOP
+	p.Scond = 0
+	p.From = Addr{}
+	p.From3 = nil
+	p.Reg = 0
+	p.To = Addr{}
+}
+
+func Expstring() string {
+	buf := "X"
+	for i := range exper {
+		if *exper[i].val != 0 {
+			buf += "," + exper[i].name
+		}
+	}
+	if buf == "X" {
+		buf += ",none"
+	}
+	return "X:" + buf[2:]
+}
diff --git a/vendor/github.com/google/gops/internal/obj/ld.go b/vendor/github.com/google/gops/internal/obj/ld.go
new file mode 100644
index 00000000..54fde2f2
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ld.go
@@ -0,0 +1,92 @@
+// Derived from Inferno utils/6l/obj.c and utils/6l/span.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package obj
+
+/*
+ * add library to library list.
+ *	srcref: src file referring to package
+ *	objref: object file referring to package
+ *	file: object file, e.g., /home/rsc/go/pkg/container/vector.a
+ *	pkg: package import path, e.g. container/vector
+ */
+
+const (
+	LOG = 5
+)
+
+func mkfwd(sym *LSym) {
+	var dwn [LOG]int32
+	var cnt [LOG]int32
+	var lst [LOG]*Prog
+
+	for i := 0; i < LOG; i++ {
+		if i == 0 {
+			cnt[i] = 1
+		} else {
+			cnt[i] = LOG * cnt[i-1]
+		}
+		dwn[i] = 1
+		lst[i] = nil
+	}
+
+	i := 0
+	for p := sym.Text; p != nil && p.Link != nil; p = p.Link {
+		i--
+		if i < 0 {
+			i = LOG - 1
+		}
+		p.Forwd = nil
+		dwn[i]--
+		if dwn[i] <= 0 {
+			dwn[i] = cnt[i]
+			if lst[i] != nil {
+				lst[i].Forwd = p
+			}
+			lst[i] = p
+		}
+	}
+}
+
+func Copyp(ctxt *Link, q *Prog) *Prog {
+	p := ctxt.NewProg()
+	*p = *q
+	return p
+}
+
+func Appendp(ctxt *Link, q *Prog) *Prog {
+	p := ctxt.NewProg()
+	p.Link = q.Link
+	q.Link = p
+	p.Lineno = q.Lineno
+	p.Mode = q.Mode
+	return p
+}
diff --git a/vendor/github.com/google/gops/internal/obj/link.go b/vendor/github.com/google/gops/internal/obj/link.go
new file mode 100644
index 00000000..e2530615
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/link.go
@@ -0,0 +1,974 @@
+// Derived from Inferno utils/6l/l.h and related files.
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/l.h
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package obj
+
+import (
+	"bufio"
+	"fmt"
+
+	"github.com/google/gops/internal/sys"
+)
+
+// An Addr is an argument to an instruction.
+// The general forms and their encodings are:
+//
+//	sym±offset(symkind)(reg)(index*scale)
+//		Memory reference at address &sym(symkind) + offset + reg + index*scale.
+//		Any of sym(symkind), ±offset, (reg), (index*scale), and *scale can be omitted.
+//		If (reg) and *scale are both omitted, the resulting expression (index) is parsed as (reg).
+//		To force a parsing as index*scale, write (index*1).
+//		Encoding:
+//			type = TYPE_MEM
+//			name = symkind (NAME_AUTO, ...) or 0 (NAME_NONE)
+//			sym = sym
+//			offset = ±offset
+//			reg = reg (REG_*)
+//			index = index (REG_*)
+//			scale = scale (1, 2, 4, 8)
+//
+//	$<mem>
+//		Effective address of memory reference <mem>, defined above.
+//		Encoding: same as memory reference, but type = TYPE_ADDR.
+//
+//	$<±integer value>
+//		This is a special case of $<mem>, in which only ±offset is present.
+//		It has a separate type for easy recognition.
+//		Encoding:
+//			type = TYPE_CONST
+//			offset = ±integer value
+//
+//	*<mem>
+//		Indirect reference through memory reference <mem>, defined above.
+//		Only used on x86 for CALL/JMP *sym(SB), which calls/jumps to a function
+//		pointer stored in the data word sym(SB), not a function named sym(SB).
+//		Encoding: same as above, but type = TYPE_INDIR.
+//
+//	$*$<mem>
+//		No longer used.
+//		On machines with actual SB registers, $*$<mem> forced the
+//		instruction encoding to use a full 32-bit constant, never a
+//		reference relative to SB.
+//
+//	$<floating point literal>
+//		Floating point constant value.
+//		Encoding:
+//			type = TYPE_FCONST
+//			val = floating point value
+//
+//	$<string literal, up to 8 chars>
+//		String literal value (raw bytes used for DATA instruction).
+//		Encoding:
+//			type = TYPE_SCONST
+//			val = string
+//
+//	<register name>
+//		Any register: integer, floating point, control, segment, and so on.
+//		If looking for specific register kind, must check type and reg value range.
+//		Encoding:
+//			type = TYPE_REG
+//			reg = reg (REG_*)
+//
+//	x(PC)
+//		Encoding:
+//			type = TYPE_BRANCH
+//			val = Prog* reference OR ELSE offset = target pc (branch takes priority)
+//
+//	$±x-±y
+//		Final argument to TEXT, specifying local frame size x and argument size y.
+//		In this form, x and y are integer literals only, not arbitrary expressions.
+//		This avoids parsing ambiguities due to the use of - as a separator.
+//		The ± are optional.
+//		If the final argument to TEXT omits the -±y, the encoding should still
+//		use TYPE_TEXTSIZE (not TYPE_CONST), with u.argsize = ArgsSizeUnknown.
+//		Encoding:
+//			type = TYPE_TEXTSIZE
+//			offset = x
+//			val = int32(y)
+//
+//	reg<<shift, reg>>shift, reg->shift, reg@>shift
+//		Shifted register value, for ARM and ARM64.
+//		In this form, reg must be a register and shift can be a register or an integer constant.
+//		Encoding:
+//			type = TYPE_SHIFT
+//		On ARM:
+//			offset = (reg&15) | shifttype<<5 | count
+//			shifttype = 0, 1, 2, 3 for <<, >>, ->, @>
+//			count = (reg&15)<<8 | 1<<4 for a register shift count, (n&31)<<7 for an integer constant.
+//		On ARM64:
+//			offset = (reg&31)<<16 | shifttype<<22 | (count&63)<<10
+//			shifttype = 0, 1, 2 for <<, >>, ->
+//
+//	(reg, reg)
+//		A destination register pair. When used as the last argument of an instruction,
+//		this form makes clear that both registers are destinations.
+//		Encoding:
+//			type = TYPE_REGREG
+//			reg = first register
+//			offset = second register
+//
+//	[reg, reg, reg-reg]
+//		Register list for ARM.
+//		Encoding:
+//			type = TYPE_REGLIST
+//			offset = bit mask of registers in list; R0 is low bit.
+//
+//	reg, reg
+//		Register pair for ARM.
+//		TYPE_REGREG2
+//
+//	(reg+reg)
+//		Register pair for PPC64.
+//		Encoding:
+//			type = TYPE_MEM
+//			reg = first register
+//			index = second register
+//			scale = 1
+//
+type Addr struct {
+	Reg    int16
+	Index  int16
+	Scale  int16 // Sometimes holds a register.
+	Type   AddrType
+	Name   int8
+	Class  int8
+	Offset int64
+	Sym    *LSym
+
+	// argument value:
+	//	for TYPE_SCONST, a string
+	//	for TYPE_FCONST, a float64
+	//	for TYPE_BRANCH, a *Prog (optional)
+	//	for TYPE_TEXTSIZE, an int32 (optional)
+	Val interface{}
+
+	Node interface{} // for use by compiler
+}
+
+type AddrType uint8
+
+const (
+	NAME_NONE = 0 + iota
+	NAME_EXTERN
+	NAME_STATIC
+	NAME_AUTO
+	NAME_PARAM
+	// A reference to name@GOT(SB) is a reference to the entry in the global offset
+	// table for 'name'.
+	NAME_GOTREF
+)
+
+const (
+	TYPE_NONE AddrType = 0
+
+	TYPE_BRANCH AddrType = 5 + iota
+	TYPE_TEXTSIZE
+	TYPE_MEM
+	TYPE_CONST
+	TYPE_FCONST
+	TYPE_SCONST
+	TYPE_REG
+	TYPE_ADDR
+	TYPE_SHIFT
+	TYPE_REGREG
+	TYPE_REGREG2
+	TYPE_INDIR
+	TYPE_REGLIST
+)
+
+// Prog describes a single machine instruction.
+//
+// The general instruction form is:
+//
+//	As.Scond From, Reg, From3, To, RegTo2
+//
+// where As is an opcode and the others are arguments:
+// From, Reg, From3 are sources, and To, RegTo2 are destinations.
+// Usually, not all arguments are present.
+// For example, MOVL R1, R2 encodes using only As=MOVL, From=R1, To=R2.
+// The Scond field holds additional condition bits for systems (like arm)
+// that have generalized conditional execution.
+//
+// Jump instructions use the Pcond field to point to the target instruction,
+// which must be in the same linked list as the jump instruction.
+//
+// The Progs for a given function are arranged in a list linked through the Link field.
+//
+// Each Prog is charged to a specific source line in the debug information,
+// specified by Lineno, an index into the line history (see LineHist).
+// Every Prog has a Ctxt field that defines various context, including the current LineHist.
+// Progs should be allocated using ctxt.NewProg(), not new(Prog).
+//
+// The other fields not yet mentioned are for use by the back ends and should
+// be left zeroed by creators of Prog lists.
+type Prog struct {
+	Ctxt   *Link       // linker context
+	Link   *Prog       // next Prog in linked list
+	From   Addr        // first source operand
+	From3  *Addr       // third source operand (second is Reg below)
+	To     Addr        // destination operand (second is RegTo2 below)
+	Pcond  *Prog       // target of conditional jump
+	Opt    interface{} // available to optimization passes to hold per-Prog state
+	Forwd  *Prog       // for x86 back end
+	Rel    *Prog       // for x86, arm back ends
+	Pc     int64       // for back ends or assembler: virtual or actual program counter, depending on phase
+	Lineno int32       // line number of this instruction
+	Spadj  int32       // effect of instruction on stack pointer (increment or decrement amount)
+	As     As          // assembler opcode
+	Reg    int16       // 2nd source operand
+	RegTo2 int16       // 2nd destination operand
+	Mark   uint16      // bitmask of arch-specific items
+	Optab  uint16      // arch-specific opcode index
+	Scond  uint8       // condition bits for conditional instruction (e.g., on ARM)
+	Back   uint8       // for x86 back end: backwards branch state
+	Ft     uint8       // for x86 back end: type index of Prog.From
+	Tt     uint8       // for x86 back end: type index of Prog.To
+	Isize  uint8       // for x86 back end: size of the instruction in bytes
+	Mode   int8        // for x86 back end: 32- or 64-bit mode
+}
+
+// From3Type returns From3.Type, or TYPE_NONE when From3 is nil.
+func (p *Prog) From3Type() AddrType {
+	if p.From3 == nil {
+		return TYPE_NONE
+	}
+	return p.From3.Type
+}
+
+// From3Offset returns From3.Offset, or 0 when From3 is nil.
+func (p *Prog) From3Offset() int64 {
+	if p.From3 == nil {
+		return 0
+	}
+	return p.From3.Offset
+}
+
+// An As denotes an assembler opcode.
+// There are some portable opcodes, declared here in package obj,
+// that are common to all architectures.
+// However, the majority of opcodes are arch-specific
+// and are declared in their respective architecture's subpackage.
+type As int16
+
+// These are the portable opcodes.
+const (
+	AXXX As = iota
+	ACALL
+	ADUFFCOPY
+	ADUFFZERO
+	AEND
+	AFUNCDATA
+	AJMP
+	ANOP
+	APCDATA
+	ARET
+	ATEXT
+	ATYPE
+	AUNDEF
+	AUSEFIELD
+	AVARDEF
+	AVARKILL
+	AVARLIVE
+	A_ARCHSPECIFIC
+)
+
+// Each architecture is allotted a distinct subspace of opcode values
+// for declaring its arch-specific opcodes.
+// Within this subspace, the first arch-specific opcode should be
+// at offset A_ARCHSPECIFIC.
+//
+// Subspaces are aligned to a power of two so opcodes can be masked
+// with AMask and used as compact array indices.
+const (
+	ABase386 = (1 + iota) << 10
+	ABaseARM
+	ABaseAMD64
+	ABasePPC64
+	ABaseARM64
+	ABaseMIPS64
+	ABaseS390X
+
+	AllowedOpCodes = 1 << 10            // The number of opcodes available for any given architecture.
+	AMask          = AllowedOpCodes - 1 // AND with this to use the opcode as an array index.
+)
+
+// An LSym is the sort of symbol that is written to an object file.
+type LSym struct {
+	Name    string
+	Type    SymKind
+	Version int16
+	Attribute
+
+	RefIdx int // Index of this symbol in the symbol reference list.
+	Args   int32
+	Locals int32
+	Size   int64
+	Gotype *LSym
+	Autom  *Auto
+	Text   *Prog
+	Pcln   *Pcln
+	P      []byte
+	R      []Reloc
+}
+
+// Attribute is a set of symbol attributes.
+type Attribute int16
+
+const (
+	AttrDuplicateOK Attribute = 1 << iota
+	AttrCFunc
+	AttrNoSplit
+	AttrLeaf
+	AttrSeenGlobl
+	AttrOnList
+
+	// MakeTypelink means that the type should have an entry in the typelink table.
+	AttrMakeTypelink
+
+	// ReflectMethod means the function may call reflect.Type.Method or
+	// reflect.Type.MethodByName. Matching is imprecise (as reflect.Type
+	// can be used through a custom interface), so ReflectMethod may be
+	// set in some cases when the reflect package is not called.
+	//
+	// Used by the linker to determine what methods can be pruned.
+	AttrReflectMethod
+
+	// Local means make the symbol local even when compiling Go code to reference Go
+	// symbols in other shared libraries, as in this mode symbols are global by
+	// default. "local" here means in the sense of the dynamic linker, i.e. not
+	// visible outside of the module (shared library or executable) that contains its
+	// definition. (When not compiling to support Go shared libraries, all symbols are
+	// local in this sense unless there is a cgo_export_* directive).
+	AttrLocal
+)
+
+func (a Attribute) DuplicateOK() bool   { return a&AttrDuplicateOK != 0 }
+func (a Attribute) MakeTypelink() bool  { return a&AttrMakeTypelink != 0 }
+func (a Attribute) CFunc() bool         { return a&AttrCFunc != 0 }
+func (a Attribute) NoSplit() bool       { return a&AttrNoSplit != 0 }
+func (a Attribute) Leaf() bool          { return a&AttrLeaf != 0 }
+func (a Attribute) SeenGlobl() bool     { return a&AttrSeenGlobl != 0 }
+func (a Attribute) OnList() bool        { return a&AttrOnList != 0 }
+func (a Attribute) ReflectMethod() bool { return a&AttrReflectMethod != 0 }
+func (a Attribute) Local() bool         { return a&AttrLocal != 0 }
+
+func (a *Attribute) Set(flag Attribute, value bool) {
+	if value {
+		*a |= flag
+	} else {
+		*a &^= flag
+	}
+}
+
+// The compiler needs LSym to satisfy fmt.Stringer, because it stores
+// an LSym in ssa.ExternSymbol.
+func (s *LSym) String() string {
+	return s.Name
+}
+
+type Pcln struct {
+	Pcsp        Pcdata
+	Pcfile      Pcdata
+	Pcline      Pcdata
+	Pcdata      []Pcdata
+	Funcdata    []*LSym
+	Funcdataoff []int64
+	File        []*LSym
+	Lastfile    *LSym
+	Lastindex   int
+}
+
+// A SymKind describes the kind of memory represented by a symbol.
+type SymKind int16
+
+// Defined SymKind values.
+//
+// TODO(rsc): Give idiomatic Go names.
+// TODO(rsc): Reduce the number of symbol types in the object files.
+//go:generate stringer -type=SymKind
+const (
+	Sxxx SymKind = iota
+	STEXT
+	SELFRXSECT
+
+	// Read-only sections.
+	STYPE
+	SSTRING
+	SGOSTRING
+	SGOFUNC
+	SGCBITS
+	SRODATA
+	SFUNCTAB
+
+	SELFROSECT
+	SMACHOPLT
+
+	// Read-only sections with relocations.
+	//
+	// Types STYPE-SFUNCTAB above are written to the .rodata section by default.
+	// When linking a shared object, some conceptually "read only" types need to
+	// be written to by relocations and putting them in a section called
+	// ".rodata" interacts poorly with the system linkers. The GNU linkers
+	// support this situation by arranging for sections of the name
+	// ".data.rel.ro.XXX" to be mprotected read only by the dynamic linker after
+	// relocations have applied, so when the Go linker is creating a shared
+	// object it checks all objects of the above types and bumps any object that
+	// has a relocation to it to the corresponding type below, which are then
+	// written to sections with appropriate magic names.
+	STYPERELRO
+	SSTRINGRELRO
+	SGOSTRINGRELRO
+	SGOFUNCRELRO
+	SGCBITSRELRO
+	SRODATARELRO
+	SFUNCTABRELRO
+
+	// Part of .data.rel.ro if it exists, otherwise part of .rodata.
+	STYPELINK
+	SITABLINK
+	SSYMTAB
+	SPCLNTAB
+
+	// Writable sections.
+	SELFSECT
+	SMACHO
+	SMACHOGOT
+	SWINDOWS
+	SELFGOT
+	SNOPTRDATA
+	SINITARR
+	SDATA
+	SBSS
+	SNOPTRBSS
+	STLSBSS
+	SXREF
+	SMACHOSYMSTR
+	SMACHOSYMTAB
+	SMACHOINDIRECTPLT
+	SMACHOINDIRECTGOT
+	SFILE
+	SFILEPATH
+	SCONST
+	SDYNIMPORT
+	SHOSTOBJ
+	SDWARFSECT
+	SDWARFINFO
+	SSUB       = SymKind(1 << 8)
+	SMASK      = SymKind(SSUB - 1)
+	SHIDDEN    = SymKind(1 << 9)
+	SCONTAINER = SymKind(1 << 10) // has a sub-symbol
+)
+
+// ReadOnly are the symbol kinds that form read-only sections. In some
+// cases, if they will require relocations, they are transformed into
+// rel-ro sections using RelROMap.
+var ReadOnly = []SymKind{
+	STYPE,
+	SSTRING,
+	SGOSTRING,
+	SGOFUNC,
+	SGCBITS,
+	SRODATA,
+	SFUNCTAB,
+}
+
+// RelROMap describes the transformation of read-only symbols to rel-ro
+// symbols.
+var RelROMap = map[SymKind]SymKind{
+	STYPE:     STYPERELRO,
+	SSTRING:   SSTRINGRELRO,
+	SGOSTRING: SGOSTRINGRELRO,
+	SGOFUNC:   SGOFUNCRELRO,
+	SGCBITS:   SGCBITSRELRO,
+	SRODATA:   SRODATARELRO,
+	SFUNCTAB:  SFUNCTABRELRO,
+}
+
+type Reloc struct {
+	Off  int32
+	Siz  uint8
+	Type RelocType
+	Add  int64
+	Sym  *LSym
+}
+
+type RelocType int32
+
+//go:generate stringer -type=RelocType
+const (
+	R_ADDR RelocType = 1 + iota
+	// R_ADDRPOWER relocates a pair of "D-form" instructions (instructions with 16-bit
+	// immediates in the low half of the instruction word), usually addis followed by
+	// another add or a load, inserting the "high adjusted" 16 bits of the address of
+	// the referenced symbol into the immediate field of the first instruction and the
+	// low 16 bits into that of the second instruction.
+	R_ADDRPOWER
+	// R_ADDRARM64 relocates an adrp, add pair to compute the address of the
+	// referenced symbol.
+	R_ADDRARM64
+	// R_ADDRMIPS (only used on mips64) resolves to the low 16 bits of an external
+	// address, by encoding it into the instruction.
+	R_ADDRMIPS
+	// R_ADDROFF resolves to a 32-bit offset from the beginning of the section
+	// holding the data being relocated to the referenced symbol.
+	R_ADDROFF
+	R_SIZE
+	R_CALL
+	R_CALLARM
+	R_CALLARM64
+	R_CALLIND
+	R_CALLPOWER
+	// R_CALLMIPS (only used on mips64) resolves to non-PC-relative target address
+	// of a CALL (JAL) instruction, by encoding the address into the instruction.
+	R_CALLMIPS
+	R_CONST
+	R_PCREL
+	// R_TLS_LE, used on 386, amd64, and ARM, resolves to the offset of the
+	// thread-local symbol from the thread local base and is used to implement the
+	// "local exec" model for tls access (r.Sym is not set on intel platforms but is
+	// set to a TLS symbol -- runtime.tlsg -- in the linker when externally linking).
+	R_TLS_LE
+	// R_TLS_IE, used 386, amd64, and ARM resolves to the PC-relative offset to a GOT
+	// slot containing the offset from the thread-local symbol from the thread local
+	// base and is used to implemented the "initial exec" model for tls access (r.Sym
+	// is not set on intel platforms but is set to a TLS symbol -- runtime.tlsg -- in
+	// the linker when externally linking).
+	R_TLS_IE
+	R_GOTOFF
+	R_PLT0
+	R_PLT1
+	R_PLT2
+	R_USEFIELD
+	// R_USETYPE resolves to an *rtype, but no relocation is created. The
+	// linker uses this as a signal that the pointed-to type information
+	// should be linked into the final binary, even if there are no other
+	// direct references. (This is used for types reachable by reflection.)
+	R_USETYPE
+	// R_METHODOFF resolves to a 32-bit offset from the beginning of the section
+	// holding the data being relocated to the referenced symbol.
+	// It is a variant of R_ADDROFF used when linking from the uncommonType of a
+	// *rtype, and may be set to zero by the linker if it determines the method
+	// text is unreachable by the linked program.
+	R_METHODOFF
+	R_POWER_TOC
+	R_GOTPCREL
+	// R_JMPMIPS (only used on mips64) resolves to non-PC-relative target address
+	// of a JMP instruction, by encoding the address into the instruction.
+	// The stack nosplit check ignores this since it is not a function call.
+	R_JMPMIPS
+	// R_DWARFREF resolves to the offset of the symbol from its section.
+	R_DWARFREF
+
+	// Platform dependent relocations. Architectures with fixed width instructions
+	// have the inherent issue that a 32-bit (or 64-bit!) displacement cannot be
+	// stuffed into a 32-bit instruction, so an address needs to be spread across
+	// several instructions, and in turn this requires a sequence of relocations, each
+	// updating a part of an instruction. This leads to relocation codes that are
+	// inherently processor specific.
+
+	// Arm64.
+
+	// Set a MOV[NZ] immediate field to bits [15:0] of the offset from the thread
+	// local base to the thread local variable defined by the referenced (thread
+	// local) symbol. Error if the offset does not fit into 16 bits.
+	R_ARM64_TLS_LE
+
+	// Relocates an ADRP; LD64 instruction sequence to load the offset between
+	// the thread local base and the thread local variable defined by the
+	// referenced (thread local) symbol from the GOT.
+	R_ARM64_TLS_IE
+
+	// R_ARM64_GOTPCREL relocates an adrp, ld64 pair to compute the address of the GOT
+	// slot of the referenced symbol.
+	R_ARM64_GOTPCREL
+
+	// PPC64.
+
+	// R_POWER_TLS_LE is used to implement the "local exec" model for tls
+	// access. It resolves to the offset of the thread-local symbol from the
+	// thread pointer (R13) and inserts this value into the low 16 bits of an
+	// instruction word.
+	R_POWER_TLS_LE
+
+	// R_POWER_TLS_IE is used to implement the "initial exec" model for tls access. It
+	// relocates a D-form, DS-form instruction sequence like R_ADDRPOWER_DS. It
+	// inserts to the offset of GOT slot for the thread-local symbol from the TOC (the
+	// GOT slot is filled by the dynamic linker with the offset of the thread-local
+	// symbol from the thread pointer (R13)).
+	R_POWER_TLS_IE
+
+	// R_POWER_TLS marks an X-form instruction such as "MOVD 0(R13)(R31*1), g" as
+	// accessing a particular thread-local symbol. It does not affect code generation
+	// but is used by the system linker when relaxing "initial exec" model code to
+	// "local exec" model code.
+	R_POWER_TLS
+
+	// R_ADDRPOWER_DS is similar to R_ADDRPOWER above, but assumes the second
+	// instruction is a "DS-form" instruction, which has an immediate field occupying
+	// bits [15:2] of the instruction word. Bits [15:2] of the address of the
+	// relocated symbol are inserted into this field; it is an error if the last two
+	// bits of the address are not 0.
+	R_ADDRPOWER_DS
+
+	// R_ADDRPOWER_PCREL relocates a D-form, DS-form instruction sequence like
+	// R_ADDRPOWER_DS but inserts the offset of the GOT slot for the referenced symbol
+	// from the TOC rather than the symbol's address.
+	R_ADDRPOWER_GOT
+
+	// R_ADDRPOWER_PCREL relocates two D-form instructions like R_ADDRPOWER, but
+	// inserts the displacement from the place being relocated to the address of the
+	// the relocated symbol instead of just its address.
+	R_ADDRPOWER_PCREL
+
+	// R_ADDRPOWER_TOCREL relocates two D-form instructions like R_ADDRPOWER, but
+	// inserts the offset from the TOC to the address of the the relocated symbol
+	// rather than the symbol's address.
+	R_ADDRPOWER_TOCREL
+
+	// R_ADDRPOWER_TOCREL relocates a D-form, DS-form instruction sequence like
+	// R_ADDRPOWER_DS but inserts the offset from the TOC to the address of the the
+	// relocated symbol rather than the symbol's address.
+	R_ADDRPOWER_TOCREL_DS
+
+	// R_PCRELDBL relocates s390x 2-byte aligned PC-relative addresses.
+	// TODO(mundaym): remove once variants can be serialized - see issue 14218.
+	R_PCRELDBL
+
+	// R_ADDRMIPSU (only used on mips64) resolves to the sign-adjusted "upper" 16
+	// bits (bit 16-31) of an external address, by encoding it into the instruction.
+	R_ADDRMIPSU
+	// R_ADDRMIPSTLS (only used on mips64) resolves to the low 16 bits of a TLS
+	// address (offset from thread pointer), by encoding it into the instruction.
+	R_ADDRMIPSTLS
+)
+
+// IsDirectJump returns whether r is a relocation for a direct jump.
+// A direct jump is a CALL or JMP instruction that takes the target address
+// as immediate. The address is embedded into the instruction, possibly
+// with limited width.
+// An indirect jump is a CALL or JMP instruction that takes the target address
+// in register or memory.
+func (r RelocType) IsDirectJump() bool {
+	switch r {
+	case R_CALL, R_CALLARM, R_CALLARM64, R_CALLPOWER, R_CALLMIPS, R_JMPMIPS:
+		return true
+	}
+	return false
+}
+
+type Auto struct {
+	Asym    *LSym
+	Link    *Auto
+	Aoffset int32
+	Name    int16
+	Gotype  *LSym
+}
+
+// Auto.name
+const (
+	A_AUTO = 1 + iota
+	A_PARAM
+)
+
+type Pcdata struct {
+	P []byte
+}
+
+// symbol version, incremented each time a file is loaded.
+// version==1 is reserved for savehist.
+const (
+	HistVersion = 1
+)
+
+// Link holds the context for writing object code from a compiler
+// to be linker input or for reading that input into the linker.
+type Link struct {
+	Headtype      HeadType
+	Arch          *LinkArch
+	Debugasm      int32
+	Debugvlog     int32
+	Debugdivmod   int32
+	Debugpcln     int32
+	Flag_shared   bool
+	Flag_dynlink  bool
+	Flag_optimize bool
+	Bso           *bufio.Writer
+	Pathname      string
+	Hash          map[SymVer]*LSym
+	LineHist      LineHist
+	Imports       []string
+	Plists        []*Plist
+	Sym_div       *LSym
+	Sym_divu      *LSym
+	Sym_mod       *LSym
+	Sym_modu      *LSym
+	Plan9privates *LSym
+	Curp          *Prog
+	Printp        *Prog
+	Blitrl        *Prog
+	Elitrl        *Prog
+	Rexflag       int
+	Vexflag       int
+	Rep           int
+	Repn          int
+	Lock          int
+	Asmode        int
+	AsmBuf        AsmBuf // instruction buffer for x86
+	Instoffset    int64
+	Autosize      int32
+	Armsize       int32
+	Pc            int64
+	DiagFunc      func(string, ...interface{})
+	Mode          int
+	Cursym        *LSym
+	Version       int
+	Errors        int
+
+	Framepointer_enabled bool
+
+	// state for writing objects
+	Text []*LSym
+	Data []*LSym
+
+	// Cache of Progs
+	allocIdx int
+	progs    [10000]Prog
+}
+
+func (ctxt *Link) Diag(format string, args ...interface{}) {
+	ctxt.Errors++
+	ctxt.DiagFunc(format, args...)
+}
+
+func (ctxt *Link) Logf(format string, args ...interface{}) {
+	fmt.Fprintf(ctxt.Bso, format, args...)
+	ctxt.Bso.Flush()
+}
+
+// The smallest possible offset from the hardware stack pointer to a local
+// variable on the stack. Architectures that use a link register save its value
+// on the stack in the function prologue and so always have a pointer between
+// the hardware stack pointer and the local variable area.
+func (ctxt *Link) FixedFrameSize() int64 {
+	switch ctxt.Arch.Family {
+	case sys.AMD64, sys.I386:
+		return 0
+	case sys.PPC64:
+		// PIC code on ppc64le requires 32 bytes of stack, and it's easier to
+		// just use that much stack always on ppc64x.
+		return int64(4 * ctxt.Arch.PtrSize)
+	default:
+		return int64(ctxt.Arch.PtrSize)
+	}
+}
+
+type SymVer struct {
+	Name    string
+	Version int // TODO: make int16 to match LSym.Version?
+}
+
+// LinkArch is the definition of a single architecture.
+type LinkArch struct {
+	*sys.Arch
+	Preprocess func(*Link, *LSym)
+	Assemble   func(*Link, *LSym)
+	Follow     func(*Link, *LSym)
+	Progedit   func(*Link, *Prog)
+	UnaryDst   map[As]bool // Instruction takes one operand, a destination.
+}
+
+// HeadType is the executable header type.
+type HeadType uint8
+
+const (
+	Hunknown HeadType = iota
+	Hdarwin
+	Hdragonfly
+	Hfreebsd
+	Hlinux
+	Hnacl
+	Hnetbsd
+	Hopenbsd
+	Hplan9
+	Hsolaris
+	Hwindows
+	Hwindowsgui
+)
+
+func (h *HeadType) Set(s string) error {
+	switch s {
+	case "darwin":
+		*h = Hdarwin
+	case "dragonfly":
+		*h = Hdragonfly
+	case "freebsd":
+		*h = Hfreebsd
+	case "linux", "android":
+		*h = Hlinux
+	case "nacl":
+		*h = Hnacl
+	case "netbsd":
+		*h = Hnetbsd
+	case "openbsd":
+		*h = Hopenbsd
+	case "plan9":
+		*h = Hplan9
+	case "solaris":
+		*h = Hsolaris
+	case "windows":
+		*h = Hwindows
+	case "windowsgui":
+		*h = Hwindowsgui
+	default:
+		return fmt.Errorf("invalid headtype: %q", s)
+	}
+	return nil
+}
+
+func (h *HeadType) String() string {
+	switch *h {
+	case Hdarwin:
+		return "darwin"
+	case Hdragonfly:
+		return "dragonfly"
+	case Hfreebsd:
+		return "freebsd"
+	case Hlinux:
+		return "linux"
+	case Hnacl:
+		return "nacl"
+	case Hnetbsd:
+		return "netbsd"
+	case Hopenbsd:
+		return "openbsd"
+	case Hplan9:
+		return "plan9"
+	case Hsolaris:
+		return "solaris"
+	case Hwindows:
+		return "windows"
+	case Hwindowsgui:
+		return "windowsgui"
+	}
+	return fmt.Sprintf("HeadType(%d)", *h)
+}
+
+// AsmBuf is a simple buffer to assemble variable-length x86 instructions into.
+type AsmBuf struct {
+	buf [100]byte
+	off int
+}
+
+// Put1 appends one byte to the end of the buffer.
+func (a *AsmBuf) Put1(x byte) {
+	a.buf[a.off] = x
+	a.off++
+}
+
+// Put2 appends two bytes to the end of the buffer.
+func (a *AsmBuf) Put2(x, y byte) {
+	a.buf[a.off+0] = x
+	a.buf[a.off+1] = y
+	a.off += 2
+}
+
+// Put3 appends three bytes to the end of the buffer.
+func (a *AsmBuf) Put3(x, y, z byte) {
+	a.buf[a.off+0] = x
+	a.buf[a.off+1] = y
+	a.buf[a.off+2] = z
+	a.off += 3
+}
+
+// Put4 appends four bytes to the end of the buffer.
+func (a *AsmBuf) Put4(x, y, z, w byte) {
+	a.buf[a.off+0] = x
+	a.buf[a.off+1] = y
+	a.buf[a.off+2] = z
+	a.buf[a.off+3] = w
+	a.off += 4
+}
+
+// PutInt16 writes v into the buffer using little-endian encoding.
+func (a *AsmBuf) PutInt16(v int16) {
+	a.buf[a.off+0] = byte(v)
+	a.buf[a.off+1] = byte(v >> 8)
+	a.off += 2
+}
+
+// PutInt32 writes v into the buffer using little-endian encoding.
+func (a *AsmBuf) PutInt32(v int32) {
+	a.buf[a.off+0] = byte(v)
+	a.buf[a.off+1] = byte(v >> 8)
+	a.buf[a.off+2] = byte(v >> 16)
+	a.buf[a.off+3] = byte(v >> 24)
+	a.off += 4
+}
+
+// PutInt64 writes v into the buffer using little-endian encoding.
+func (a *AsmBuf) PutInt64(v int64) {
+	a.buf[a.off+0] = byte(v)
+	a.buf[a.off+1] = byte(v >> 8)
+	a.buf[a.off+2] = byte(v >> 16)
+	a.buf[a.off+3] = byte(v >> 24)
+	a.buf[a.off+4] = byte(v >> 32)
+	a.buf[a.off+5] = byte(v >> 40)
+	a.buf[a.off+6] = byte(v >> 48)
+	a.buf[a.off+7] = byte(v >> 56)
+	a.off += 8
+}
+
+// Put copies b into the buffer.
+func (a *AsmBuf) Put(b []byte) {
+	copy(a.buf[a.off:], b)
+	a.off += len(b)
+}
+
+// Insert inserts b at offset i.
+func (a *AsmBuf) Insert(i int, b byte) {
+	a.off++
+	copy(a.buf[i+1:a.off], a.buf[i:a.off-1])
+	a.buf[i] = b
+}
+
+// Last returns the byte at the end of the buffer.
+func (a *AsmBuf) Last() byte { return a.buf[a.off-1] }
+
+// Len returns the length of the buffer.
+func (a *AsmBuf) Len() int { return a.off }
+
+// Bytes returns the contents of the buffer.
+func (a *AsmBuf) Bytes() []byte { return a.buf[:a.off] }
+
+// Reset empties the buffer.
+func (a *AsmBuf) Reset() { a.off = 0 }
+
+// Peek returns the byte at offset i.
+func (a *AsmBuf) Peek(i int) byte { return a.buf[i] }
diff --git a/vendor/github.com/google/gops/internal/obj/mips/a.out.go b/vendor/github.com/google/gops/internal/obj/mips/a.out.go
new file mode 100644
index 00000000..e0e51eed
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/mips/a.out.go
@@ -0,0 +1,375 @@
+// cmd/9c/9.out.h from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package mips
+
+import "github.com/google/gops/internal/obj"
+
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p mips
+
+/*
+ * mips 64
+ */
+const (
+	NSNAME = 8
+	NSYM   = 50
+	NREG   = 32 /* number of general registers */
+	NFREG  = 32 /* number of floating point registers */
+)
+
+const (
+	REG_R0 = obj.RBaseMIPS64 + iota
+	REG_R1
+	REG_R2
+	REG_R3
+	REG_R4
+	REG_R5
+	REG_R6
+	REG_R7
+	REG_R8
+	REG_R9
+	REG_R10
+	REG_R11
+	REG_R12
+	REG_R13
+	REG_R14
+	REG_R15
+	REG_R16
+	REG_R17
+	REG_R18
+	REG_R19
+	REG_R20
+	REG_R21
+	REG_R22
+	REG_R23
+	REG_R24
+	REG_R25
+	REG_R26
+	REG_R27
+	REG_R28
+	REG_R29
+	REG_R30
+	REG_R31
+
+	REG_F0
+	REG_F1
+	REG_F2
+	REG_F3
+	REG_F4
+	REG_F5
+	REG_F6
+	REG_F7
+	REG_F8
+	REG_F9
+	REG_F10
+	REG_F11
+	REG_F12
+	REG_F13
+	REG_F14
+	REG_F15
+	REG_F16
+	REG_F17
+	REG_F18
+	REG_F19
+	REG_F20
+	REG_F21
+	REG_F22
+	REG_F23
+	REG_F24
+	REG_F25
+	REG_F26
+	REG_F27
+	REG_F28
+	REG_F29
+	REG_F30
+	REG_F31
+
+	REG_HI
+	REG_LO
+
+	// co-processor 0 control registers
+	REG_M0
+	REG_M1
+	REG_M2
+	REG_M3
+	REG_M4
+	REG_M5
+	REG_M6
+	REG_M7
+	REG_M8
+	REG_M9
+	REG_M10
+	REG_M11
+	REG_M12
+	REG_M13
+	REG_M14
+	REG_M15
+	REG_M16
+	REG_M17
+	REG_M18
+	REG_M19
+	REG_M20
+	REG_M21
+	REG_M22
+	REG_M23
+	REG_M24
+	REG_M25
+	REG_M26
+	REG_M27
+	REG_M28
+	REG_M29
+	REG_M30
+	REG_M31
+
+	// FPU control registers
+	REG_FCR0
+	REG_FCR1
+	REG_FCR2
+	REG_FCR3
+	REG_FCR4
+	REG_FCR5
+	REG_FCR6
+	REG_FCR7
+	REG_FCR8
+	REG_FCR9
+	REG_FCR10
+	REG_FCR11
+	REG_FCR12
+	REG_FCR13
+	REG_FCR14
+	REG_FCR15
+	REG_FCR16
+	REG_FCR17
+	REG_FCR18
+	REG_FCR19
+	REG_FCR20
+	REG_FCR21
+	REG_FCR22
+	REG_FCR23
+	REG_FCR24
+	REG_FCR25
+	REG_FCR26
+	REG_FCR27
+	REG_FCR28
+	REG_FCR29
+	REG_FCR30
+	REG_FCR31
+
+	REG_LAST = REG_FCR31 // the last defined register
+
+	REG_SPECIAL = REG_M0
+
+	REGZERO = REG_R0 /* set to zero */
+	REGSP   = REG_R29
+	REGSB   = REG_R28
+	REGLINK = REG_R31
+	REGRET  = REG_R1
+	REGARG  = -1      /* -1 disables passing the first argument in register */
+	REGRT1  = REG_R1  /* reserved for runtime, duffzero and duffcopy */
+	REGRT2  = REG_R2  /* reserved for runtime, duffcopy */
+	REGCTXT = REG_R22 /* context for closures */
+	REGG    = REG_R30 /* G */
+	REGTMP  = REG_R23 /* used by the linker */
+	FREGRET = REG_F0
+)
+
+const (
+	BIG = 32766
+)
+
+const (
+	/* mark flags */
+	FOLL    = 1 << 0
+	LABEL   = 1 << 1
+	LEAF    = 1 << 2
+	SYNC    = 1 << 3
+	BRANCH  = 1 << 4
+	LOAD    = 1 << 5
+	FCMP    = 1 << 6
+	NOSCHED = 1 << 7
+
+	NSCHED = 20
+)
+
+const (
+	C_NONE = iota
+	C_REG
+	C_FREG
+	C_FCREG
+	C_MREG /* special processor register */
+	C_HI
+	C_LO
+	C_ZCON
+	C_SCON /* 16 bit signed */
+	C_UCON /* 32 bit signed, low 16 bits 0 */
+	C_ADD0CON
+	C_AND0CON
+	C_ADDCON /* -0x8000 <= v < 0 */
+	C_ANDCON /* 0 < v <= 0xFFFF */
+	C_LCON   /* other 32 */
+	C_DCON   /* other 64 (could subdivide further) */
+	C_SACON  /* $n(REG) where n <= int16 */
+	C_SECON
+	C_LACON /* $n(REG) where int16 < n <= int32 */
+	C_LECON
+	C_DACON /* $n(REG) where int32 < n */
+	C_STCON /* $tlsvar */
+	C_SBRA
+	C_LBRA
+	C_SAUTO
+	C_LAUTO
+	C_SEXT
+	C_LEXT
+	C_ZOREG
+	C_SOREG
+	C_LOREG
+	C_GOK
+	C_ADDR
+	C_TLS
+	C_TEXTSIZE
+
+	C_NCLASS /* must be the last */
+)
+
+const (
+	AABSD = obj.ABaseMIPS64 + obj.A_ARCHSPECIFIC + iota
+	AABSF
+	AABSW
+	AADD
+	AADDD
+	AADDF
+	AADDU
+	AADDW
+	AAND
+	ABEQ
+	ABFPF
+	ABFPT
+	ABGEZ
+	ABGEZAL
+	ABGTZ
+	ABLEZ
+	ABLTZ
+	ABLTZAL
+	ABNE
+	ABREAK
+	ACMPEQD
+	ACMPEQF
+	ACMPGED
+	ACMPGEF
+	ACMPGTD
+	ACMPGTF
+	ADIV
+	ADIVD
+	ADIVF
+	ADIVU
+	ADIVW
+	AGOK
+	ALUI
+	AMOVB
+	AMOVBU
+	AMOVD
+	AMOVDF
+	AMOVDW
+	AMOVF
+	AMOVFD
+	AMOVFW
+	AMOVH
+	AMOVHU
+	AMOVW
+	AMOVWD
+	AMOVWF
+	AMOVWL
+	AMOVWR
+	AMUL
+	AMULD
+	AMULF
+	AMULU
+	AMULW
+	ANEGD
+	ANEGF
+	ANEGW
+	ANOR
+	AOR
+	AREM
+	AREMU
+	ARFE
+	ASGT
+	ASGTU
+	ASLL
+	ASRA
+	ASRL
+	ASUB
+	ASUBD
+	ASUBF
+	ASUBU
+	ASUBW
+	ASYSCALL
+	ATLBP
+	ATLBR
+	ATLBWI
+	ATLBWR
+	AWORD
+	AXOR
+
+	/* 64-bit */
+	AMOVV
+	AMOVVL
+	AMOVVR
+	ASLLV
+	ASRAV
+	ASRLV
+	ADIVV
+	ADIVVU
+	AREMV
+	AREMVU
+	AMULV
+	AMULVU
+	AADDV
+	AADDVU
+	ASUBV
+	ASUBVU
+
+	/* 64-bit FP */
+	ATRUNCFV
+	ATRUNCDV
+	ATRUNCFW
+	ATRUNCDW
+	AMOVWU
+	AMOVFV
+	AMOVDV
+	AMOVVF
+	AMOVVD
+
+	ALAST
+
+	// aliases
+	AJMP = obj.AJMP
+	AJAL = obj.ACALL
+	ARET = obj.ARET
+)
diff --git a/vendor/github.com/google/gops/internal/obj/mips/anames.go b/vendor/github.com/google/gops/internal/obj/mips/anames.go
new file mode 100644
index 00000000..06a366fc
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/mips/anames.go
@@ -0,0 +1,113 @@
+// Generated by stringer -i a.out.go -o anames.go -p mips
+// Do not edit.
+
+package mips
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "ABSD",
+	"ABSF",
+	"ABSW",
+	"ADD",
+	"ADDD",
+	"ADDF",
+	"ADDU",
+	"ADDW",
+	"AND",
+	"BEQ",
+	"BFPF",
+	"BFPT",
+	"BGEZ",
+	"BGEZAL",
+	"BGTZ",
+	"BLEZ",
+	"BLTZ",
+	"BLTZAL",
+	"BNE",
+	"BREAK",
+	"CMPEQD",
+	"CMPEQF",
+	"CMPGED",
+	"CMPGEF",
+	"CMPGTD",
+	"CMPGTF",
+	"DIV",
+	"DIVD",
+	"DIVF",
+	"DIVU",
+	"DIVW",
+	"GOK",
+	"LUI",
+	"MOVB",
+	"MOVBU",
+	"MOVD",
+	"MOVDF",
+	"MOVDW",
+	"MOVF",
+	"MOVFD",
+	"MOVFW",
+	"MOVH",
+	"MOVHU",
+	"MOVW",
+	"MOVWD",
+	"MOVWF",
+	"MOVWL",
+	"MOVWR",
+	"MUL",
+	"MULD",
+	"MULF",
+	"MULU",
+	"MULW",
+	"NEGD",
+	"NEGF",
+	"NEGW",
+	"NOR",
+	"OR",
+	"REM",
+	"REMU",
+	"RFE",
+	"SGT",
+	"SGTU",
+	"SLL",
+	"SRA",
+	"SRL",
+	"SUB",
+	"SUBD",
+	"SUBF",
+	"SUBU",
+	"SUBW",
+	"SYSCALL",
+	"TLBP",
+	"TLBR",
+	"TLBWI",
+	"TLBWR",
+	"WORD",
+	"XOR",
+	"MOVV",
+	"MOVVL",
+	"MOVVR",
+	"SLLV",
+	"SRAV",
+	"SRLV",
+	"DIVV",
+	"DIVVU",
+	"REMV",
+	"REMVU",
+	"MULV",
+	"MULVU",
+	"ADDV",
+	"ADDVU",
+	"SUBV",
+	"SUBVU",
+	"TRUNCFV",
+	"TRUNCDV",
+	"TRUNCFW",
+	"TRUNCDW",
+	"MOVWU",
+	"MOVFV",
+	"MOVDV",
+	"MOVVF",
+	"MOVVD",
+	"LAST",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/mips/anames0.go b/vendor/github.com/google/gops/internal/obj/mips/anames0.go
new file mode 100644
index 00000000..c56d34ea
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/mips/anames0.go
@@ -0,0 +1,44 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package mips
+
+var cnames0 = []string{
+	"NONE",
+	"REG",
+	"FREG",
+	"FCREG",
+	"MREG",
+	"HI",
+	"LO",
+	"ZCON",
+	"SCON",
+	"UCON",
+	"ADD0CON",
+	"AND0CON",
+	"ADDCON",
+	"ANDCON",
+	"LCON",
+	"DCON",
+	"SACON",
+	"SECON",
+	"LACON",
+	"LECON",
+	"DACON",
+	"STCON",
+	"SBRA",
+	"LBRA",
+	"SAUTO",
+	"LAUTO",
+	"SEXT",
+	"LEXT",
+	"ZOREG",
+	"SOREG",
+	"LOREG",
+	"GOK",
+	"ADDR",
+	"TLS",
+	"TEXTSIZE",
+	"NCLASS",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/mips/asm0.go b/vendor/github.com/google/gops/internal/obj/mips/asm0.go
new file mode 100644
index 00000000..ef4ceddc
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/mips/asm0.go
@@ -0,0 +1,1783 @@
+// cmd/9l/optab.c, cmd/9l/asmout.c from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package mips
+
+import (
+	"fmt"
+	"log"
+	"sort"
+
+	"github.com/google/gops/internal/obj"
+)
+
+// Instruction layout.
+
+const (
+	funcAlign = 8
+)
+
+const (
+	r0iszero = 1
+)
+
+type Optab struct {
+	as    obj.As
+	a1    uint8
+	a2    uint8
+	a3    uint8
+	type_ int8
+	size  int8
+	param int16
+}
+
+var optab = []Optab{
+	{obj.ATEXT, C_LEXT, C_NONE, C_TEXTSIZE, 0, 0, 0},
+	{obj.ATEXT, C_ADDR, C_NONE, C_TEXTSIZE, 0, 0, 0},
+
+	{AMOVW, C_REG, C_NONE, C_REG, 1, 4, 0},
+	{AMOVV, C_REG, C_NONE, C_REG, 1, 4, 0},
+	{AMOVB, C_REG, C_NONE, C_REG, 12, 8, 0},
+	{AMOVBU, C_REG, C_NONE, C_REG, 13, 4, 0},
+	{AMOVWU, C_REG, C_NONE, C_REG, 14, 8, 0},
+
+	{ASUB, C_REG, C_REG, C_REG, 2, 4, 0},
+	{AADD, C_REG, C_REG, C_REG, 2, 4, 0},
+	{AAND, C_REG, C_REG, C_REG, 2, 4, 0},
+	{ASUB, C_REG, C_NONE, C_REG, 2, 4, 0},
+	{AADD, C_REG, C_NONE, C_REG, 2, 4, 0},
+	{AAND, C_REG, C_NONE, C_REG, 2, 4, 0},
+
+	{ASLL, C_REG, C_NONE, C_REG, 9, 4, 0},
+	{ASLL, C_REG, C_REG, C_REG, 9, 4, 0},
+
+	{AADDF, C_FREG, C_NONE, C_FREG, 32, 4, 0},
+	{AADDF, C_FREG, C_REG, C_FREG, 32, 4, 0},
+	{ACMPEQF, C_FREG, C_REG, C_NONE, 32, 4, 0},
+	{AABSF, C_FREG, C_NONE, C_FREG, 33, 4, 0},
+	{AMOVF, C_FREG, C_NONE, C_FREG, 33, 4, 0},
+	{AMOVD, C_FREG, C_NONE, C_FREG, 33, 4, 0},
+
+	{AMOVW, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVWU, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVV, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVB, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVBU, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVWL, C_REG, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVW, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVWU, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVV, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVB, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVBU, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVWL, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVW, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVWU, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVV, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVB, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVBU, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVWL, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+
+	{AMOVW, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVWU, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVV, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVB, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVBU, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVWL, C_SEXT, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVW, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVWU, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVV, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVB, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVBU, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVWL, C_SAUTO, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVW, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVWU, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVV, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVB, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVBU, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVWL, C_SOREG, C_NONE, C_REG, 8, 4, REGZERO},
+
+	{AMOVW, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
+	{AMOVWU, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
+	{AMOVV, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
+	{AMOVB, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
+	{AMOVBU, C_REG, C_NONE, C_LEXT, 35, 12, REGSB},
+	{AMOVW, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
+	{AMOVWU, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
+	{AMOVV, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
+	{AMOVB, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
+	{AMOVBU, C_REG, C_NONE, C_LAUTO, 35, 12, REGSP},
+	{AMOVW, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
+	{AMOVWU, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
+	{AMOVV, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
+	{AMOVB, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
+	{AMOVBU, C_REG, C_NONE, C_LOREG, 35, 12, REGZERO},
+	{AMOVW, C_REG, C_NONE, C_ADDR, 50, 12, 0},
+	{AMOVWU, C_REG, C_NONE, C_ADDR, 50, 12, 0},
+	{AMOVV, C_REG, C_NONE, C_ADDR, 50, 12, 0},
+	{AMOVB, C_REG, C_NONE, C_ADDR, 50, 12, 0},
+	{AMOVBU, C_REG, C_NONE, C_ADDR, 50, 12, 0},
+	{AMOVW, C_REG, C_NONE, C_TLS, 53, 8, 0},
+	{AMOVWU, C_REG, C_NONE, C_TLS, 53, 8, 0},
+	{AMOVV, C_REG, C_NONE, C_TLS, 53, 8, 0},
+	{AMOVB, C_REG, C_NONE, C_TLS, 53, 8, 0},
+	{AMOVBU, C_REG, C_NONE, C_TLS, 53, 8, 0},
+
+	{AMOVW, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
+	{AMOVWU, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
+	{AMOVV, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
+	{AMOVB, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
+	{AMOVBU, C_LEXT, C_NONE, C_REG, 36, 12, REGSB},
+	{AMOVW, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
+	{AMOVWU, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
+	{AMOVV, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
+	{AMOVB, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
+	{AMOVBU, C_LAUTO, C_NONE, C_REG, 36, 12, REGSP},
+	{AMOVW, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
+	{AMOVWU, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
+	{AMOVV, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
+	{AMOVB, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
+	{AMOVBU, C_LOREG, C_NONE, C_REG, 36, 12, REGZERO},
+	{AMOVW, C_ADDR, C_NONE, C_REG, 51, 12, 0},
+	{AMOVWU, C_ADDR, C_NONE, C_REG, 51, 12, 0},
+	{AMOVV, C_ADDR, C_NONE, C_REG, 51, 12, 0},
+	{AMOVB, C_ADDR, C_NONE, C_REG, 51, 12, 0},
+	{AMOVBU, C_ADDR, C_NONE, C_REG, 51, 12, 0},
+	{AMOVW, C_TLS, C_NONE, C_REG, 54, 8, 0},
+	{AMOVWU, C_TLS, C_NONE, C_REG, 54, 8, 0},
+	{AMOVV, C_TLS, C_NONE, C_REG, 54, 8, 0},
+	{AMOVB, C_TLS, C_NONE, C_REG, 54, 8, 0},
+	{AMOVBU, C_TLS, C_NONE, C_REG, 54, 8, 0},
+
+	{AMOVW, C_SECON, C_NONE, C_REG, 3, 4, REGSB},
+	{AMOVV, C_SECON, C_NONE, C_REG, 3, 4, REGSB},
+	{AMOVW, C_SACON, C_NONE, C_REG, 3, 4, REGSP},
+	{AMOVV, C_SACON, C_NONE, C_REG, 3, 4, REGSP},
+	{AMOVW, C_LECON, C_NONE, C_REG, 52, 12, REGSB},
+	{AMOVV, C_LECON, C_NONE, C_REG, 52, 12, REGSB},
+	{AMOVW, C_LACON, C_NONE, C_REG, 26, 12, REGSP},
+	{AMOVV, C_LACON, C_NONE, C_REG, 26, 12, REGSP},
+	{AMOVW, C_ADDCON, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVV, C_ADDCON, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVW, C_ANDCON, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVV, C_ANDCON, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVW, C_STCON, C_NONE, C_REG, 55, 8, 0},
+	{AMOVV, C_STCON, C_NONE, C_REG, 55, 8, 0},
+
+	{AMOVW, C_UCON, C_NONE, C_REG, 24, 4, 0},
+	{AMOVV, C_UCON, C_NONE, C_REG, 24, 4, 0},
+	{AMOVW, C_LCON, C_NONE, C_REG, 19, 8, 0},
+	{AMOVV, C_LCON, C_NONE, C_REG, 19, 8, 0},
+
+	{AMOVW, C_HI, C_NONE, C_REG, 20, 4, 0},
+	{AMOVV, C_HI, C_NONE, C_REG, 20, 4, 0},
+	{AMOVW, C_LO, C_NONE, C_REG, 20, 4, 0},
+	{AMOVV, C_LO, C_NONE, C_REG, 20, 4, 0},
+	{AMOVW, C_REG, C_NONE, C_HI, 21, 4, 0},
+	{AMOVV, C_REG, C_NONE, C_HI, 21, 4, 0},
+	{AMOVW, C_REG, C_NONE, C_LO, 21, 4, 0},
+	{AMOVV, C_REG, C_NONE, C_LO, 21, 4, 0},
+
+	{AMUL, C_REG, C_REG, C_NONE, 22, 4, 0},
+
+	{AADD, C_ADD0CON, C_REG, C_REG, 4, 4, 0},
+	{AADD, C_ADD0CON, C_NONE, C_REG, 4, 4, 0},
+	{AADD, C_ANDCON, C_REG, C_REG, 10, 8, 0},
+	{AADD, C_ANDCON, C_NONE, C_REG, 10, 8, 0},
+
+	{AAND, C_AND0CON, C_REG, C_REG, 4, 4, 0},
+	{AAND, C_AND0CON, C_NONE, C_REG, 4, 4, 0},
+	{AAND, C_ADDCON, C_REG, C_REG, 10, 8, 0},
+	{AAND, C_ADDCON, C_NONE, C_REG, 10, 8, 0},
+
+	{AADD, C_UCON, C_REG, C_REG, 25, 8, 0},
+	{AADD, C_UCON, C_NONE, C_REG, 25, 8, 0},
+	{AAND, C_UCON, C_REG, C_REG, 25, 8, 0},
+	{AAND, C_UCON, C_NONE, C_REG, 25, 8, 0},
+
+	{AADD, C_LCON, C_NONE, C_REG, 23, 12, 0},
+	{AAND, C_LCON, C_NONE, C_REG, 23, 12, 0},
+	{AADD, C_LCON, C_REG, C_REG, 23, 12, 0},
+	{AAND, C_LCON, C_REG, C_REG, 23, 12, 0},
+
+	{ASLL, C_SCON, C_REG, C_REG, 16, 4, 0},
+	{ASLL, C_SCON, C_NONE, C_REG, 16, 4, 0},
+
+	{ASYSCALL, C_NONE, C_NONE, C_NONE, 5, 4, 0},
+
+	{ABEQ, C_REG, C_REG, C_SBRA, 6, 4, 0},
+	{ABEQ, C_REG, C_NONE, C_SBRA, 6, 4, 0},
+	{ABLEZ, C_REG, C_NONE, C_SBRA, 6, 4, 0},
+	{ABFPT, C_NONE, C_NONE, C_SBRA, 6, 8, 0},
+
+	{AJMP, C_NONE, C_NONE, C_LBRA, 11, 4, 0},
+	{AJAL, C_NONE, C_NONE, C_LBRA, 11, 4, 0},
+
+	{AJMP, C_NONE, C_NONE, C_ZOREG, 18, 4, REGZERO},
+	{AJAL, C_NONE, C_NONE, C_ZOREG, 18, 4, REGLINK},
+
+	{AMOVW, C_SEXT, C_NONE, C_FREG, 27, 4, REGSB},
+	{AMOVF, C_SEXT, C_NONE, C_FREG, 27, 4, REGSB},
+	{AMOVD, C_SEXT, C_NONE, C_FREG, 27, 4, REGSB},
+	{AMOVW, C_SAUTO, C_NONE, C_FREG, 27, 4, REGSP},
+	{AMOVF, C_SAUTO, C_NONE, C_FREG, 27, 4, REGSP},
+	{AMOVD, C_SAUTO, C_NONE, C_FREG, 27, 4, REGSP},
+	{AMOVW, C_SOREG, C_NONE, C_FREG, 27, 4, REGZERO},
+	{AMOVF, C_SOREG, C_NONE, C_FREG, 27, 4, REGZERO},
+	{AMOVD, C_SOREG, C_NONE, C_FREG, 27, 4, REGZERO},
+
+	{AMOVW, C_LEXT, C_NONE, C_FREG, 27, 12, REGSB},
+	{AMOVF, C_LEXT, C_NONE, C_FREG, 27, 12, REGSB},
+	{AMOVD, C_LEXT, C_NONE, C_FREG, 27, 12, REGSB},
+	{AMOVW, C_LAUTO, C_NONE, C_FREG, 27, 12, REGSP},
+	{AMOVF, C_LAUTO, C_NONE, C_FREG, 27, 12, REGSP},
+	{AMOVD, C_LAUTO, C_NONE, C_FREG, 27, 12, REGSP},
+	{AMOVW, C_LOREG, C_NONE, C_FREG, 27, 12, REGZERO},
+	{AMOVF, C_LOREG, C_NONE, C_FREG, 27, 12, REGZERO},
+	{AMOVD, C_LOREG, C_NONE, C_FREG, 27, 12, REGZERO},
+	{AMOVF, C_ADDR, C_NONE, C_FREG, 51, 12, 0},
+	{AMOVD, C_ADDR, C_NONE, C_FREG, 51, 12, 0},
+
+	{AMOVW, C_FREG, C_NONE, C_SEXT, 28, 4, REGSB},
+	{AMOVF, C_FREG, C_NONE, C_SEXT, 28, 4, REGSB},
+	{AMOVD, C_FREG, C_NONE, C_SEXT, 28, 4, REGSB},
+	{AMOVW, C_FREG, C_NONE, C_SAUTO, 28, 4, REGSP},
+	{AMOVF, C_FREG, C_NONE, C_SAUTO, 28, 4, REGSP},
+	{AMOVD, C_FREG, C_NONE, C_SAUTO, 28, 4, REGSP},
+	{AMOVW, C_FREG, C_NONE, C_SOREG, 28, 4, REGZERO},
+	{AMOVF, C_FREG, C_NONE, C_SOREG, 28, 4, REGZERO},
+	{AMOVD, C_FREG, C_NONE, C_SOREG, 28, 4, REGZERO},
+
+	{AMOVW, C_FREG, C_NONE, C_LEXT, 28, 12, REGSB},
+	{AMOVF, C_FREG, C_NONE, C_LEXT, 28, 12, REGSB},
+	{AMOVD, C_FREG, C_NONE, C_LEXT, 28, 12, REGSB},
+	{AMOVW, C_FREG, C_NONE, C_LAUTO, 28, 12, REGSP},
+	{AMOVF, C_FREG, C_NONE, C_LAUTO, 28, 12, REGSP},
+	{AMOVD, C_FREG, C_NONE, C_LAUTO, 28, 12, REGSP},
+	{AMOVW, C_FREG, C_NONE, C_LOREG, 28, 12, REGZERO},
+	{AMOVF, C_FREG, C_NONE, C_LOREG, 28, 12, REGZERO},
+	{AMOVD, C_FREG, C_NONE, C_LOREG, 28, 12, REGZERO},
+	{AMOVF, C_FREG, C_NONE, C_ADDR, 50, 12, 0},
+	{AMOVD, C_FREG, C_NONE, C_ADDR, 50, 12, 0},
+
+	{AMOVW, C_REG, C_NONE, C_FREG, 30, 4, 0},
+	{AMOVW, C_FREG, C_NONE, C_REG, 31, 4, 0},
+	{AMOVV, C_REG, C_NONE, C_FREG, 47, 4, 0},
+	{AMOVV, C_FREG, C_NONE, C_REG, 48, 4, 0},
+
+	{AMOVW, C_ADDCON, C_NONE, C_FREG, 34, 8, 0},
+	{AMOVW, C_ANDCON, C_NONE, C_FREG, 34, 8, 0},
+
+	{AMOVW, C_REG, C_NONE, C_MREG, 37, 4, 0},
+	{AMOVV, C_REG, C_NONE, C_MREG, 37, 4, 0},
+	{AMOVW, C_MREG, C_NONE, C_REG, 38, 4, 0},
+	{AMOVV, C_MREG, C_NONE, C_REG, 38, 4, 0},
+
+	{AWORD, C_LCON, C_NONE, C_NONE, 40, 4, 0},
+
+	{AMOVW, C_REG, C_NONE, C_FCREG, 41, 8, 0},
+	{AMOVV, C_REG, C_NONE, C_FCREG, 41, 8, 0},
+	{AMOVW, C_FCREG, C_NONE, C_REG, 42, 4, 0},
+	{AMOVV, C_FCREG, C_NONE, C_REG, 42, 4, 0},
+
+	{ABREAK, C_REG, C_NONE, C_SEXT, 7, 4, REGSB}, /* really CACHE instruction */
+	{ABREAK, C_REG, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{ABREAK, C_REG, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{ABREAK, C_NONE, C_NONE, C_NONE, 5, 4, 0},
+
+	{obj.AUNDEF, C_NONE, C_NONE, C_NONE, 49, 4, 0},
+	{obj.AUSEFIELD, C_ADDR, C_NONE, C_NONE, 0, 0, 0},
+	{obj.APCDATA, C_LCON, C_NONE, C_LCON, 0, 0, 0},
+	{obj.AFUNCDATA, C_SCON, C_NONE, C_ADDR, 0, 0, 0},
+	{obj.ANOP, C_NONE, C_NONE, C_NONE, 0, 0, 0},
+	{obj.ADUFFZERO, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as AJMP
+	{obj.ADUFFCOPY, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as AJMP
+
+	{obj.AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0},
+}
+
+var oprange [ALAST & obj.AMask][]Optab
+
+var xcmp [C_NCLASS][C_NCLASS]bool
+
+func span0(ctxt *obj.Link, cursym *obj.LSym) {
+	p := cursym.Text
+	if p == nil || p.Link == nil { // handle external functions and ELF section symbols
+		return
+	}
+	ctxt.Cursym = cursym
+	ctxt.Autosize = int32(p.To.Offset + 8)
+
+	if oprange[AOR&obj.AMask] == nil {
+		buildop(ctxt)
+	}
+
+	c := int64(0)
+	p.Pc = c
+
+	var m int
+	var o *Optab
+	for p = p.Link; p != nil; p = p.Link {
+		ctxt.Curp = p
+		p.Pc = c
+		o = oplook(ctxt, p)
+		m = int(o.size)
+		if m == 0 {
+			if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
+				ctxt.Diag("zero-width instruction\n%v", p)
+			}
+			continue
+		}
+
+		c += int64(m)
+	}
+
+	cursym.Size = c
+
+	/*
+	 * if any procedure is large enough to
+	 * generate a large SBRA branch, then
+	 * generate extra passes putting branches
+	 * around jmps to fix. this is rare.
+	 */
+	bflag := 1
+
+	var otxt int64
+	var q *obj.Prog
+	for bflag != 0 {
+		if ctxt.Debugvlog != 0 {
+			ctxt.Logf("%5.2f span1\n", obj.Cputime())
+		}
+		bflag = 0
+		c = 0
+		for p = cursym.Text.Link; p != nil; p = p.Link {
+			p.Pc = c
+			o = oplook(ctxt, p)
+
+			// very large conditional branches
+			if o.type_ == 6 && p.Pcond != nil {
+				otxt = p.Pcond.Pc - c
+				if otxt < -(1<<17)+10 || otxt >= (1<<17)-10 {
+					q = ctxt.NewProg()
+					q.Link = p.Link
+					p.Link = q
+					q.As = AJMP
+					q.Lineno = p.Lineno
+					q.To.Type = obj.TYPE_BRANCH
+					q.Pcond = p.Pcond
+					p.Pcond = q
+					q = ctxt.NewProg()
+					q.Link = p.Link
+					p.Link = q
+					q.As = AJMP
+					q.Lineno = p.Lineno
+					q.To.Type = obj.TYPE_BRANCH
+					q.Pcond = q.Link.Link
+
+					addnop(ctxt, p.Link)
+					addnop(ctxt, p)
+					bflag = 1
+				}
+			}
+
+			m = int(o.size)
+			if m == 0 {
+				if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
+					ctxt.Diag("zero-width instruction\n%v", p)
+				}
+				continue
+			}
+
+			c += int64(m)
+		}
+
+		cursym.Size = c
+	}
+
+	c += -c & (funcAlign - 1)
+	cursym.Size = c
+
+	/*
+	 * lay out the code, emitting code and data relocations.
+	 */
+
+	cursym.Grow(cursym.Size)
+
+	bp := cursym.P
+	var i int32
+	var out [4]uint32
+	for p := cursym.Text.Link; p != nil; p = p.Link {
+		ctxt.Pc = p.Pc
+		ctxt.Curp = p
+		o = oplook(ctxt, p)
+		if int(o.size) > 4*len(out) {
+			log.Fatalf("out array in span0 is too small, need at least %d for %v", o.size/4, p)
+		}
+		asmout(ctxt, p, o, out[:])
+		for i = 0; i < int32(o.size/4); i++ {
+			ctxt.Arch.ByteOrder.PutUint32(bp, out[i])
+			bp = bp[4:]
+		}
+	}
+}
+
+func isint32(v int64) bool {
+	return int64(int32(v)) == v
+}
+
+func isuint32(v uint64) bool {
+	return uint64(uint32(v)) == v
+}
+
+func aclass(ctxt *obj.Link, a *obj.Addr) int {
+	switch a.Type {
+	case obj.TYPE_NONE:
+		return C_NONE
+
+	case obj.TYPE_REG:
+		if REG_R0 <= a.Reg && a.Reg <= REG_R31 {
+			return C_REG
+		}
+		if REG_F0 <= a.Reg && a.Reg <= REG_F31 {
+			return C_FREG
+		}
+		if REG_M0 <= a.Reg && a.Reg <= REG_M31 {
+			return C_MREG
+		}
+		if REG_FCR0 <= a.Reg && a.Reg <= REG_FCR31 {
+			return C_FCREG
+		}
+		if a.Reg == REG_LO {
+			return C_LO
+		}
+		if a.Reg == REG_HI {
+			return C_HI
+		}
+		return C_GOK
+
+	case obj.TYPE_MEM:
+		switch a.Name {
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			if a.Sym == nil {
+				break
+			}
+			ctxt.Instoffset = a.Offset
+			if a.Sym != nil { // use relocation
+				if a.Sym.Type == obj.STLSBSS {
+					return C_TLS
+				}
+				return C_ADDR
+			}
+			return C_LEXT
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SAUTO
+			}
+			return C_LAUTO
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SAUTO
+			}
+			return C_LAUTO
+
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if ctxt.Instoffset == 0 {
+				return C_ZOREG
+			}
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SOREG
+			}
+			return C_LOREG
+		}
+
+		return C_GOK
+
+	case obj.TYPE_TEXTSIZE:
+		return C_TEXTSIZE
+
+	case obj.TYPE_CONST,
+		obj.TYPE_ADDR:
+		switch a.Name {
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if a.Reg != 0 {
+				if -BIG <= ctxt.Instoffset && ctxt.Instoffset <= BIG {
+					return C_SACON
+				}
+				if isint32(ctxt.Instoffset) {
+					return C_LACON
+				}
+				return C_DACON
+			}
+
+			goto consize
+
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			s := a.Sym
+			if s == nil {
+				break
+			}
+			if s.Type == obj.SCONST {
+				ctxt.Instoffset = a.Offset
+				goto consize
+			}
+
+			ctxt.Instoffset = a.Offset
+			if s.Type == obj.STLSBSS {
+				return C_STCON // address of TLS variable
+			}
+			return C_LECON
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SACON
+			}
+			return C_LACON
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SACON
+			}
+			return C_LACON
+		}
+
+		return C_GOK
+
+	consize:
+		if ctxt.Instoffset >= 0 {
+			if ctxt.Instoffset == 0 {
+				return C_ZCON
+			}
+			if ctxt.Instoffset <= 0x7fff {
+				return C_SCON
+			}
+			if ctxt.Instoffset <= 0xffff {
+				return C_ANDCON
+			}
+			if ctxt.Instoffset&0xffff == 0 && isuint32(uint64(ctxt.Instoffset)) { /* && (instoffset & (1<<31)) == 0) */
+				return C_UCON
+			}
+			if isint32(ctxt.Instoffset) || isuint32(uint64(ctxt.Instoffset)) {
+				return C_LCON
+			}
+			return C_LCON // C_DCON
+		}
+
+		if ctxt.Instoffset >= -0x8000 {
+			return C_ADDCON
+		}
+		if ctxt.Instoffset&0xffff == 0 && isint32(ctxt.Instoffset) {
+			return C_UCON
+		}
+		if isint32(ctxt.Instoffset) {
+			return C_LCON
+		}
+		return C_LCON // C_DCON
+
+	case obj.TYPE_BRANCH:
+		return C_SBRA
+	}
+
+	return C_GOK
+}
+
+func prasm(p *obj.Prog) {
+	fmt.Printf("%v\n", p)
+}
+
+func oplook(ctxt *obj.Link, p *obj.Prog) *Optab {
+	if oprange[AOR&obj.AMask] == nil {
+		buildop(ctxt)
+	}
+
+	a1 := int(p.Optab)
+	if a1 != 0 {
+		return &optab[a1-1]
+	}
+	a1 = int(p.From.Class)
+	if a1 == 0 {
+		a1 = aclass(ctxt, &p.From) + 1
+		p.From.Class = int8(a1)
+	}
+
+	a1--
+	a3 := int(p.To.Class)
+	if a3 == 0 {
+		a3 = aclass(ctxt, &p.To) + 1
+		p.To.Class = int8(a3)
+	}
+
+	a3--
+	a2 := C_NONE
+	if p.Reg != 0 {
+		a2 = C_REG
+	}
+
+	//print("oplook %P %d %d %d\n", p, a1, a2, a3);
+
+	ops := oprange[p.As&obj.AMask]
+	c1 := &xcmp[a1]
+	c3 := &xcmp[a3]
+	for i := range ops {
+		op := &ops[i]
+		if int(op.a2) == a2 && c1[op.a1] && c3[op.a3] {
+			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
+			return op
+		}
+	}
+
+	ctxt.Diag("illegal combination %v %v %v %v", p.As, DRconv(a1), DRconv(a2), DRconv(a3))
+	prasm(p)
+	if ops == nil {
+		ops = optab
+	}
+	return &ops[0]
+}
+
+func cmp(a int, b int) bool {
+	if a == b {
+		return true
+	}
+	switch a {
+	case C_LCON:
+		if b == C_ZCON || b == C_SCON || b == C_UCON || b == C_ADDCON || b == C_ANDCON {
+			return true
+		}
+
+	case C_ADD0CON:
+		if b == C_ADDCON {
+			return true
+		}
+		fallthrough
+
+	case C_ADDCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_AND0CON:
+		if b == C_ANDCON {
+			return true
+		}
+		fallthrough
+
+	case C_ANDCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_UCON:
+		if b == C_ZCON {
+			return true
+		}
+
+	case C_SCON:
+		if b == C_ZCON {
+			return true
+		}
+
+	case C_LACON:
+		if b == C_SACON {
+			return true
+		}
+
+	case C_LBRA:
+		if b == C_SBRA {
+			return true
+		}
+
+	case C_LEXT:
+		if b == C_SEXT {
+			return true
+		}
+
+	case C_LAUTO:
+		if b == C_SAUTO {
+			return true
+		}
+
+	case C_REG:
+		if b == C_ZCON {
+			return r0iszero != 0 /*TypeKind(100016)*/
+		}
+
+	case C_LOREG:
+		if b == C_ZOREG || b == C_SOREG {
+			return true
+		}
+
+	case C_SOREG:
+		if b == C_ZOREG {
+			return true
+		}
+	}
+
+	return false
+}
+
+type ocmp []Optab
+
+func (x ocmp) Len() int {
+	return len(x)
+}
+
+func (x ocmp) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}
+
+func (x ocmp) Less(i, j int) bool {
+	p1 := &x[i]
+	p2 := &x[j]
+	n := int(p1.as) - int(p2.as)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a1) - int(p2.a1)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a2) - int(p2.a2)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a3) - int(p2.a3)
+	if n != 0 {
+		return n < 0
+	}
+	return false
+}
+
+func opset(a, b0 obj.As) {
+	oprange[a&obj.AMask] = oprange[b0]
+}
+
+func buildop(ctxt *obj.Link) {
+	var n int
+
+	for i := 0; i < C_NCLASS; i++ {
+		for n = 0; n < C_NCLASS; n++ {
+			if cmp(n, i) {
+				xcmp[i][n] = true
+			}
+		}
+	}
+	for n = 0; optab[n].as != obj.AXXX; n++ {
+	}
+	sort.Sort(ocmp(optab[:n]))
+	for i := 0; i < n; i++ {
+		r := optab[i].as
+		r0 := r & obj.AMask
+		start := i
+		for optab[i].as == r {
+			i++
+		}
+		oprange[r0] = optab[start:i]
+		i--
+
+		switch r {
+		default:
+			ctxt.Diag("unknown op in build: %v", r)
+			log.Fatalf("bad code")
+
+		case AABSF:
+			opset(AMOVFD, r0)
+			opset(AMOVDF, r0)
+			opset(AMOVWF, r0)
+			opset(AMOVFW, r0)
+			opset(AMOVWD, r0)
+			opset(AMOVDW, r0)
+			opset(ANEGF, r0)
+			opset(ANEGD, r0)
+			opset(AABSD, r0)
+			opset(ATRUNCDW, r0)
+			opset(ATRUNCFW, r0)
+			opset(ATRUNCDV, r0)
+			opset(ATRUNCFV, r0)
+			opset(AMOVVF, r0)
+			opset(AMOVFV, r0)
+			opset(AMOVVD, r0)
+			opset(AMOVDV, r0)
+
+		case AADD:
+			opset(ASGT, r0)
+			opset(ASGTU, r0)
+			opset(AADDU, r0)
+			opset(AADDV, r0)
+			opset(AADDVU, r0)
+
+		case AADDF:
+			opset(ADIVF, r0)
+			opset(ADIVD, r0)
+			opset(AMULF, r0)
+			opset(AMULD, r0)
+			opset(ASUBF, r0)
+			opset(ASUBD, r0)
+			opset(AADDD, r0)
+
+		case AAND:
+			opset(AOR, r0)
+			opset(AXOR, r0)
+
+		case ABEQ:
+			opset(ABNE, r0)
+
+		case ABLEZ:
+			opset(ABGEZ, r0)
+			opset(ABGEZAL, r0)
+			opset(ABLTZ, r0)
+			opset(ABLTZAL, r0)
+			opset(ABGTZ, r0)
+
+		case AMOVB:
+			opset(AMOVH, r0)
+
+		case AMOVBU:
+			opset(AMOVHU, r0)
+
+		case AMUL:
+			opset(AREM, r0)
+			opset(AREMU, r0)
+			opset(ADIVU, r0)
+			opset(AMULU, r0)
+			opset(ADIV, r0)
+			opset(ADIVV, r0)
+			opset(ADIVVU, r0)
+			opset(AMULV, r0)
+			opset(AMULVU, r0)
+			opset(AREMV, r0)
+			opset(AREMVU, r0)
+
+		case ASLL:
+			opset(ASRL, r0)
+			opset(ASRA, r0)
+			opset(ASLLV, r0)
+			opset(ASRAV, r0)
+			opset(ASRLV, r0)
+
+		case ASUB:
+			opset(ASUBU, r0)
+			opset(ASUBV, r0)
+			opset(ASUBVU, r0)
+			opset(ANOR, r0)
+
+		case ASYSCALL:
+			opset(ATLBP, r0)
+			opset(ATLBR, r0)
+			opset(ATLBWI, r0)
+			opset(ATLBWR, r0)
+
+		case ACMPEQF:
+			opset(ACMPGTF, r0)
+			opset(ACMPGTD, r0)
+			opset(ACMPGEF, r0)
+			opset(ACMPGED, r0)
+			opset(ACMPEQD, r0)
+
+		case ABFPT:
+			opset(ABFPF, r0)
+
+		case AMOVWL:
+			opset(AMOVWR, r0)
+			opset(AMOVVR, r0)
+			opset(AMOVVL, r0)
+
+		case AMOVW,
+			AMOVD,
+			AMOVF,
+			AMOVV,
+			ABREAK,
+			ARFE,
+			AJAL,
+			AJMP,
+			AMOVWU,
+			AWORD,
+			obj.ANOP,
+			obj.ATEXT,
+			obj.AUNDEF,
+			obj.AUSEFIELD,
+			obj.AFUNCDATA,
+			obj.APCDATA,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			break
+		}
+	}
+}
+
+func OP(x uint32, y uint32) uint32 {
+	return x<<3 | y<<0
+}
+
+func SP(x uint32, y uint32) uint32 {
+	return x<<29 | y<<26
+}
+
+func BCOND(x uint32, y uint32) uint32 {
+	return x<<19 | y<<16
+}
+
+func MMU(x uint32, y uint32) uint32 {
+	return SP(2, 0) | 16<<21 | x<<3 | y<<0
+}
+
+func FPF(x uint32, y uint32) uint32 {
+	return SP(2, 1) | 16<<21 | x<<3 | y<<0
+}
+
+func FPD(x uint32, y uint32) uint32 {
+	return SP(2, 1) | 17<<21 | x<<3 | y<<0
+}
+
+func FPW(x uint32, y uint32) uint32 {
+	return SP(2, 1) | 20<<21 | x<<3 | y<<0
+}
+
+func FPV(x uint32, y uint32) uint32 {
+	return SP(2, 1) | 21<<21 | x<<3 | y<<0
+}
+
+func OP_RRR(op uint32, r1 uint32, r2 uint32, r3 uint32) uint32 {
+	return op | (r1&31)<<16 | (r2&31)<<21 | (r3&31)<<11
+}
+
+func OP_IRR(op uint32, i uint32, r2 uint32, r3 uint32) uint32 {
+	return op | i&0xFFFF | (r2&31)<<21 | (r3&31)<<16
+}
+
+func OP_SRR(op uint32, s uint32, r2 uint32, r3 uint32) uint32 {
+	return op | (s&31)<<6 | (r2&31)<<16 | (r3&31)<<11
+}
+
+func OP_FRRR(op uint32, r1 uint32, r2 uint32, r3 uint32) uint32 {
+	return op | (r1&31)<<16 | (r2&31)<<11 | (r3&31)<<6
+}
+
+func OP_JMP(op uint32, i uint32) uint32 {
+	return op | i&0x3FFFFFF
+}
+
+func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
+	o1 := uint32(0)
+	o2 := uint32(0)
+	o3 := uint32(0)
+	o4 := uint32(0)
+
+	switch o.type_ {
+	default:
+		ctxt.Diag("unknown type %d %v", o.type_)
+		prasm(p)
+
+	case 0: /* pseudo ops */
+		break
+
+	case 1: /* mov r1,r2 ==> OR r1,r0,r2 */
+		a := AOR
+		if p.As == AMOVW {
+			a = AADDU // sign-extended to high 32 bits
+		}
+		o1 = OP_RRR(oprrr(ctxt, a), uint32(p.From.Reg), uint32(REGZERO), uint32(p.To.Reg))
+
+	case 2: /* add/sub r1,[r2],r3 */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = OP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
+
+	case 3: /* mov $soreg, r ==> or/add $i,o,r */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		a := AADDVU
+		if o.a1 == C_ANDCON {
+			a = AOR
+		}
+
+		o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
+
+	case 4: /* add $scon,[r1],r2 */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+
+		o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.To.Reg))
+
+	case 5: /* syscall */
+		o1 = oprrr(ctxt, p.As)
+
+	case 6: /* beq r1,[r2],sbra */
+		v := int32(0)
+		if p.Pcond == nil {
+			v = int32(-4) >> 2
+		} else {
+			v = int32(p.Pcond.Pc-p.Pc-4) >> 2
+		}
+		if (v<<16)>>16 != v {
+			ctxt.Diag("short branch too far\n%v", p)
+		}
+		o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(p.From.Reg), uint32(p.Reg))
+		// for ABFPT and ABFPF only: always fill delay slot with 0
+		// see comments in func preprocess for details.
+		o2 = 0
+
+	case 7: /* mov r, soreg ==> sw o(r) */
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		v := regoff(ctxt, &p.To)
+		o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.From.Reg))
+
+	case 8: /* mov soreg, r ==> lw o(r) */
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		v := regoff(ctxt, &p.From)
+		o1 = OP_IRR(opirr(ctxt, -p.As), uint32(v), uint32(r), uint32(p.To.Reg))
+
+	case 9: /* sll r1,[r2],r3 */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = OP_RRR(oprrr(ctxt, p.As), uint32(r), uint32(p.From.Reg), uint32(p.To.Reg))
+
+	case 10: /* add $con,[r1],r2 ==> mov $con, t; add t,[r1],r2 */
+		v := regoff(ctxt, &p.From)
+		a := AOR
+		if v < 0 {
+			a = AADDU
+		}
+		o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o2 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
+
+	case 11: /* jmp lbra */
+		v := int32(0)
+		if aclass(ctxt, &p.To) == C_SBRA && p.To.Sym == nil && p.As == AJMP {
+			// use PC-relative branch for short branches
+			// BEQ	R0, R0, sbra
+			if p.Pcond == nil {
+				v = int32(-4) >> 2
+			} else {
+				v = int32(p.Pcond.Pc-p.Pc-4) >> 2
+			}
+			if (v<<16)>>16 == v {
+				o1 = OP_IRR(opirr(ctxt, ABEQ), uint32(v), uint32(REGZERO), uint32(REGZERO))
+				break
+			}
+		}
+		if p.Pcond == nil {
+			v = int32(p.Pc) >> 2
+		} else {
+			v = int32(p.Pcond.Pc) >> 2
+		}
+		o1 = OP_JMP(opirr(ctxt, p.As), uint32(v))
+		if p.To.Sym == nil {
+			p.To.Sym = ctxt.Cursym.Text.From.Sym
+			p.To.Offset = p.Pcond.Pc
+		}
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Add = p.To.Offset
+		if p.As == AJAL {
+			rel.Type = obj.R_CALLMIPS
+		} else {
+			rel.Type = obj.R_JMPMIPS
+		}
+
+	case 12: /* movbs r,r */
+		v := 16
+		if p.As == AMOVB {
+			v = 24
+		}
+		o1 = OP_SRR(opirr(ctxt, ASLL), uint32(v), uint32(p.From.Reg), uint32(p.To.Reg))
+		o2 = OP_SRR(opirr(ctxt, ASRA), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
+
+	case 13: /* movbu r,r */
+		if p.As == AMOVBU {
+			o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xff), uint32(p.From.Reg), uint32(p.To.Reg))
+		} else {
+			o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xffff), uint32(p.From.Reg), uint32(p.To.Reg))
+		}
+
+	case 14: /* movwu r,r */
+		o1 = OP_SRR(opirr(ctxt, -ASLLV), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
+		o2 = OP_SRR(opirr(ctxt, -ASRLV), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
+
+	case 16: /* sll $c,[r1],r2 */
+		v := regoff(ctxt, &p.From)
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+
+		/* OP_SRR will use only the low 5 bits of the shift value */
+		if v >= 32 && vshift(p.As) {
+			o1 = OP_SRR(opirr(ctxt, -p.As), uint32(v-32), uint32(r), uint32(p.To.Reg))
+		} else {
+			o1 = OP_SRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.To.Reg))
+		}
+
+	case 18: /* jmp [r1],0(r2) */
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = OP_RRR(oprrr(ctxt, p.As), uint32(0), uint32(p.To.Reg), uint32(r))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 0
+		rel.Type = obj.R_CALLIND
+
+	case 19: /* mov $lcon,r ==> lu+or */
+		v := regoff(ctxt, &p.From)
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
+		o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
+
+	case 20: /* mov lo/hi,r */
+		a := OP(2, 0) /* mfhi */
+		if p.From.Reg == REG_LO {
+			a = OP(2, 2) /* mflo */
+		}
+		o1 = OP_RRR(a, uint32(REGZERO), uint32(REGZERO), uint32(p.To.Reg))
+
+	case 21: /* mov r,lo/hi */
+		a := OP(2, 1) /* mthi */
+		if p.To.Reg == REG_LO {
+			a = OP(2, 3) /* mtlo */
+		}
+		o1 = OP_RRR(a, uint32(REGZERO), uint32(p.From.Reg), uint32(REGZERO))
+
+	case 22: /* mul r1,r2 */
+		o1 = OP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(p.Reg), uint32(REGZERO))
+
+	case 23: /* add $lcon,r1,r2 ==> lu+or+add */
+		v := regoff(ctxt, &p.From)
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
+		o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o3 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
+
+	case 24: /* mov $ucon,r ==> lu r */
+		v := regoff(ctxt, &p.From)
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
+
+	case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */
+		v := regoff(ctxt, &p.From)
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o2 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
+
+	case 26: /* mov $lsext/auto/oreg,r ==> lu+or+add */
+		v := regoff(ctxt, &p.From)
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
+		o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o3 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
+
+	case 27: /* mov [sl]ext/auto/oreg,fr ==> lwc1 o(r) */
+		v := regoff(ctxt, &p.From)
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		a := -AMOVF
+		if p.As == AMOVD {
+			a = -AMOVD
+		}
+		switch o.size {
+		case 12:
+			o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
+			o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
+			o3 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(REGTMP), uint32(p.To.Reg))
+
+		case 4:
+			o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
+		}
+
+	case 28: /* mov fr,[sl]ext/auto/oreg ==> swc1 o(r) */
+		v := regoff(ctxt, &p.To)
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		a := AMOVF
+		if p.As == AMOVD {
+			a = AMOVD
+		}
+		switch o.size {
+		case 12:
+			o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
+			o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
+			o3 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(REGTMP), uint32(p.From.Reg))
+
+		case 4:
+			o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.From.Reg))
+		}
+
+	case 30: /* movw r,fr */
+		a := SP(2, 1) | (4 << 21) /* mtc1 */
+		o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
+
+	case 31: /* movw fr,r */
+		a := SP(2, 1) | (0 << 21) /* mtc1 */
+		o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
+
+	case 32: /* fadd fr1,[fr2],fr3 */
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = OP_FRRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
+
+	case 33: /* fabs fr1, fr3 */
+		o1 = OP_FRRR(oprrr(ctxt, p.As), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
+
+	case 34: /* mov $con,fr ==> or/add $i,t; mov t,fr */
+		v := regoff(ctxt, &p.From)
+		a := AADDU
+		if o.a1 == C_ANDCON {
+			a = AOR
+		}
+		o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
+		o2 = OP_RRR(SP(2, 1)|(4<<21), uint32(REGTMP), uint32(0), uint32(p.To.Reg)) /* mtc1 */
+
+	case 35: /* mov r,lext/auto/oreg ==> sw o(REGTMP) */
+		v := regoff(ctxt, &p.To)
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
+		o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
+		o3 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(REGTMP), uint32(p.From.Reg))
+
+	case 36: /* mov lext/auto/oreg,r ==> lw o(REGTMP) */
+		v := regoff(ctxt, &p.From)
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
+		o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
+		o3 = OP_IRR(opirr(ctxt, -p.As), uint32(v), uint32(REGTMP), uint32(p.To.Reg))
+
+	case 37: /* movw r,mr */
+		a := SP(2, 0) | (4 << 21) /* mtc0 */
+		if p.As == AMOVV {
+			a = SP(2, 0) | (5 << 21) /* dmtc0 */
+		}
+		o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
+
+	case 38: /* movw mr,r */
+		a := SP(2, 0) | (0 << 21) /* mfc0 */
+		if p.As == AMOVV {
+			a = SP(2, 0) | (1 << 21) /* dmfc0 */
+		}
+		o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
+
+	case 40: /* word */
+		o1 = uint32(regoff(ctxt, &p.From))
+
+	case 41: /* movw f,fcr */
+		o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(REGZERO), uint32(0), uint32(p.To.Reg))    /* mfcc1 */
+		o2 = OP_RRR(SP(2, 1)|(6<<21), uint32(p.From.Reg), uint32(0), uint32(p.To.Reg)) /* mtcc1 */
+
+	case 42: /* movw fcr,r */
+		o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(p.To.Reg), uint32(0), uint32(p.From.Reg)) /* mfcc1 */
+
+	case 47: /* movv r,fr */
+		a := SP(2, 1) | (5 << 21) /* dmtc1 */
+		o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
+
+	case 48: /* movv fr,r */
+		a := SP(2, 1) | (1 << 21) /* dmtc1 */
+		o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
+
+	case 49: /* undef */
+		o1 = 52 /* trap -- teq r0, r0 */
+
+	/* relocation operations */
+	case 50: /* mov r,addr ==> lu + add REGSB, REGTMP + sw o(REGTMP) */
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(REGTMP))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Add = p.To.Offset
+		rel.Type = obj.R_ADDRMIPSU
+		o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(REGTMP), uint32(REGTMP))
+		o3 = OP_IRR(opirr(ctxt, p.As), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
+		rel2 := obj.Addrel(ctxt.Cursym)
+		rel2.Off = int32(ctxt.Pc + 8)
+		rel2.Siz = 4
+		rel2.Sym = p.To.Sym
+		rel2.Add = p.To.Offset
+		rel2.Type = obj.R_ADDRMIPS
+
+	case 51: /* mov addr,r ==> lu + add REGSB, REGTMP + lw o(REGTMP) */
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(REGTMP))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Add = p.From.Offset
+		rel.Type = obj.R_ADDRMIPSU
+		o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(REGTMP), uint32(REGTMP))
+		o3 = OP_IRR(opirr(ctxt, -p.As), uint32(0), uint32(REGTMP), uint32(p.To.Reg))
+		rel2 := obj.Addrel(ctxt.Cursym)
+		rel2.Off = int32(ctxt.Pc + 8)
+		rel2.Siz = 4
+		rel2.Sym = p.From.Sym
+		rel2.Add = p.From.Offset
+		rel2.Type = obj.R_ADDRMIPS
+
+	case 52: /* mov $lext, r ==> lu + add REGSB, r + add */
+		o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(p.To.Reg))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Add = p.From.Offset
+		rel.Type = obj.R_ADDRMIPSU
+		o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(p.To.Reg), uint32(p.To.Reg))
+		o3 = OP_IRR(opirr(ctxt, AADDVU), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
+		rel2 := obj.Addrel(ctxt.Cursym)
+		rel2.Off = int32(ctxt.Pc + 8)
+		rel2.Siz = 4
+		rel2.Sym = p.From.Sym
+		rel2.Add = p.From.Offset
+		rel2.Type = obj.R_ADDRMIPS
+
+	case 53: /* mov r, tlsvar ==> rdhwr + sw o(r3) */
+		// clobbers R3 !
+		// load thread pointer with RDHWR, R3 is used for fast kernel emulation on Linux
+		o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
+		o2 = OP_IRR(opirr(ctxt, p.As), uint32(0), uint32(REG_R3), uint32(p.From.Reg))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc + 4)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Add = p.To.Offset
+		rel.Type = obj.R_ADDRMIPSTLS
+
+	case 54: /* mov tlsvar, r ==> rdhwr + lw o(r3) */
+		// clobbers R3 !
+		o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
+		o2 = OP_IRR(opirr(ctxt, -p.As), uint32(0), uint32(REG_R3), uint32(p.To.Reg))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc + 4)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Add = p.From.Offset
+		rel.Type = obj.R_ADDRMIPSTLS
+
+	case 55: /* mov $tlsvar, r ==> rdhwr + add */
+		// clobbers R3 !
+		o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
+		o2 = OP_IRR(opirr(ctxt, AADDVU), uint32(0), uint32(REG_R3), uint32(p.To.Reg))
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc + 4)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Add = p.From.Offset
+		rel.Type = obj.R_ADDRMIPSTLS
+	}
+
+	out[0] = o1
+	out[1] = o2
+	out[2] = o3
+	out[3] = o4
+	return
+}
+
+func vregoff(ctxt *obj.Link, a *obj.Addr) int64 {
+	ctxt.Instoffset = 0
+	aclass(ctxt, a)
+	return ctxt.Instoffset
+}
+
+func regoff(ctxt *obj.Link, a *obj.Addr) int32 {
+	return int32(vregoff(ctxt, a))
+}
+
+func oprrr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AADD:
+		return OP(4, 0)
+	case AADDU:
+		return OP(4, 1)
+	case ASGT:
+		return OP(5, 2)
+	case ASGTU:
+		return OP(5, 3)
+	case AAND:
+		return OP(4, 4)
+	case AOR:
+		return OP(4, 5)
+	case AXOR:
+		return OP(4, 6)
+	case ASUB:
+		return OP(4, 2)
+	case ASUBU:
+		return OP(4, 3)
+	case ANOR:
+		return OP(4, 7)
+	case ASLL:
+		return OP(0, 4)
+	case ASRL:
+		return OP(0, 6)
+	case ASRA:
+		return OP(0, 7)
+	case ASLLV:
+		return OP(2, 4)
+	case ASRLV:
+		return OP(2, 6)
+	case ASRAV:
+		return OP(2, 7)
+	case AADDV:
+		return OP(5, 4)
+	case AADDVU:
+		return OP(5, 5)
+	case ASUBV:
+		return OP(5, 6)
+	case ASUBVU:
+		return OP(5, 7)
+	case AREM,
+		ADIV:
+		return OP(3, 2)
+	case AREMU,
+		ADIVU:
+		return OP(3, 3)
+	case AMUL:
+		return OP(3, 0)
+	case AMULU:
+		return OP(3, 1)
+	case AREMV,
+		ADIVV:
+		return OP(3, 6)
+	case AREMVU,
+		ADIVVU:
+		return OP(3, 7)
+	case AMULV:
+		return OP(3, 4)
+	case AMULVU:
+		return OP(3, 5)
+
+	case AJMP:
+		return OP(1, 0)
+	case AJAL:
+		return OP(1, 1)
+
+	case ABREAK:
+		return OP(1, 5)
+	case ASYSCALL:
+		return OP(1, 4)
+	case ATLBP:
+		return MMU(1, 0)
+	case ATLBR:
+		return MMU(0, 1)
+	case ATLBWI:
+		return MMU(0, 2)
+	case ATLBWR:
+		return MMU(0, 6)
+	case ARFE:
+		return MMU(2, 0)
+
+	case ADIVF:
+		return FPF(0, 3)
+	case ADIVD:
+		return FPD(0, 3)
+	case AMULF:
+		return FPF(0, 2)
+	case AMULD:
+		return FPD(0, 2)
+	case ASUBF:
+		return FPF(0, 1)
+	case ASUBD:
+		return FPD(0, 1)
+	case AADDF:
+		return FPF(0, 0)
+	case AADDD:
+		return FPD(0, 0)
+	case ATRUNCFV:
+		return FPF(1, 1)
+	case ATRUNCDV:
+		return FPD(1, 1)
+	case ATRUNCFW:
+		return FPF(1, 5)
+	case ATRUNCDW:
+		return FPD(1, 5)
+	case AMOVFV:
+		return FPF(4, 5)
+	case AMOVDV:
+		return FPD(4, 5)
+	case AMOVVF:
+		return FPV(4, 0)
+	case AMOVVD:
+		return FPV(4, 1)
+	case AMOVFW:
+		return FPF(4, 4)
+	case AMOVDW:
+		return FPD(4, 4)
+	case AMOVWF:
+		return FPW(4, 0)
+	case AMOVDF:
+		return FPD(4, 0)
+	case AMOVWD:
+		return FPW(4, 1)
+	case AMOVFD:
+		return FPF(4, 1)
+	case AABSF:
+		return FPF(0, 5)
+	case AABSD:
+		return FPD(0, 5)
+	case AMOVF:
+		return FPF(0, 6)
+	case AMOVD:
+		return FPD(0, 6)
+	case ANEGF:
+		return FPF(0, 7)
+	case ANEGD:
+		return FPD(0, 7)
+	case ACMPEQF:
+		return FPF(6, 2)
+	case ACMPEQD:
+		return FPD(6, 2)
+	case ACMPGTF:
+		return FPF(7, 4)
+	case ACMPGTD:
+		return FPD(7, 4)
+	case ACMPGEF:
+		return FPF(7, 6)
+	case ACMPGED:
+		return FPD(7, 6)
+	}
+
+	if a < 0 {
+		ctxt.Diag("bad rrr opcode -%v", -a)
+	} else {
+		ctxt.Diag("bad rrr opcode %v", a)
+	}
+	return 0
+}
+
+func opirr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AADD:
+		return SP(1, 0)
+	case AADDU:
+		return SP(1, 1)
+	case ASGT:
+		return SP(1, 2)
+	case ASGTU:
+		return SP(1, 3)
+	case AAND:
+		return SP(1, 4)
+	case AOR:
+		return SP(1, 5)
+	case AXOR:
+		return SP(1, 6)
+	case ALUI:
+		return SP(1, 7)
+	case ASLL:
+		return OP(0, 0)
+	case ASRL:
+		return OP(0, 2)
+	case ASRA:
+		return OP(0, 3)
+	case AADDV:
+		return SP(3, 0)
+	case AADDVU:
+		return SP(3, 1)
+
+	case AJMP:
+		return SP(0, 2)
+	case AJAL,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		return SP(0, 3)
+	case ABEQ:
+		return SP(0, 4)
+	case -ABEQ:
+		return SP(2, 4) /* likely */
+	case ABNE:
+		return SP(0, 5)
+	case -ABNE:
+		return SP(2, 5) /* likely */
+	case ABGEZ:
+		return SP(0, 1) | BCOND(0, 1)
+	case -ABGEZ:
+		return SP(0, 1) | BCOND(0, 3) /* likely */
+	case ABGEZAL:
+		return SP(0, 1) | BCOND(2, 1)
+	case -ABGEZAL:
+		return SP(0, 1) | BCOND(2, 3) /* likely */
+	case ABGTZ:
+		return SP(0, 7)
+	case -ABGTZ:
+		return SP(2, 7) /* likely */
+	case ABLEZ:
+		return SP(0, 6)
+	case -ABLEZ:
+		return SP(2, 6) /* likely */
+	case ABLTZ:
+		return SP(0, 1) | BCOND(0, 0)
+	case -ABLTZ:
+		return SP(0, 1) | BCOND(0, 2) /* likely */
+	case ABLTZAL:
+		return SP(0, 1) | BCOND(2, 0)
+	case -ABLTZAL:
+		return SP(0, 1) | BCOND(2, 2) /* likely */
+	case ABFPT:
+		return SP(2, 1) | (257 << 16)
+	case -ABFPT:
+		return SP(2, 1) | (259 << 16) /* likely */
+	case ABFPF:
+		return SP(2, 1) | (256 << 16)
+	case -ABFPF:
+		return SP(2, 1) | (258 << 16) /* likely */
+
+	case AMOVB,
+		AMOVBU:
+		return SP(5, 0)
+	case AMOVH,
+		AMOVHU:
+		return SP(5, 1)
+	case AMOVW,
+		AMOVWU:
+		return SP(5, 3)
+	case AMOVV:
+		return SP(7, 7)
+	case AMOVF:
+		return SP(7, 1)
+	case AMOVD:
+		return SP(7, 5)
+	case AMOVWL:
+		return SP(5, 2)
+	case AMOVWR:
+		return SP(5, 6)
+	case AMOVVL:
+		return SP(5, 4)
+	case AMOVVR:
+		return SP(5, 5)
+
+	case ABREAK:
+		return SP(5, 7)
+
+	case -AMOVWL:
+		return SP(4, 2)
+	case -AMOVWR:
+		return SP(4, 6)
+	case -AMOVVL:
+		return SP(3, 2)
+	case -AMOVVR:
+		return SP(3, 3)
+	case -AMOVB:
+		return SP(4, 0)
+	case -AMOVBU:
+		return SP(4, 4)
+	case -AMOVH:
+		return SP(4, 1)
+	case -AMOVHU:
+		return SP(4, 5)
+	case -AMOVW:
+		return SP(4, 3)
+	case -AMOVWU:
+		return SP(4, 7)
+	case -AMOVV:
+		return SP(6, 7)
+	case -AMOVF:
+		return SP(6, 1)
+	case -AMOVD:
+		return SP(6, 5)
+
+	case ASLLV:
+		return OP(7, 0)
+	case ASRLV:
+		return OP(7, 2)
+	case ASRAV:
+		return OP(7, 3)
+	case -ASLLV:
+		return OP(7, 4)
+	case -ASRLV:
+		return OP(7, 6)
+	case -ASRAV:
+		return OP(7, 7)
+	}
+
+	if a < 0 {
+		ctxt.Diag("bad irr opcode -%v", -a)
+	} else {
+		ctxt.Diag("bad irr opcode %v", a)
+	}
+	return 0
+}
+
+func vshift(a obj.As) bool {
+	switch a {
+	case ASLLV,
+		ASRLV,
+		ASRAV:
+		return true
+	}
+	return false
+}
diff --git a/vendor/github.com/google/gops/internal/obj/mips/list0.go b/vendor/github.com/google/gops/internal/obj/mips/list0.go
new file mode 100644
index 00000000..ac11abf6
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/mips/list0.go
@@ -0,0 +1,85 @@
+// cmd/9l/list.c from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package mips
+
+import (
+	"fmt"
+
+	"github.com/google/gops/internal/obj"
+)
+
+func init() {
+	obj.RegisterRegister(obj.RBaseMIPS64, REG_LAST&^1023+1024, Rconv)
+	obj.RegisterOpcode(obj.ABaseMIPS64, Anames)
+}
+
+func Rconv(r int) string {
+	if r == 0 {
+		return "NONE"
+	}
+	if r == REGG {
+		// Special case.
+		return "g"
+	}
+	if r == REGSB {
+		// Special case.
+		return "RSB"
+	}
+	if REG_R0 <= r && r <= REG_R31 {
+		return fmt.Sprintf("R%d", r-REG_R0)
+	}
+	if REG_F0 <= r && r <= REG_F31 {
+		return fmt.Sprintf("F%d", r-REG_F0)
+	}
+	if REG_M0 <= r && r <= REG_M31 {
+		return fmt.Sprintf("M%d", r-REG_M0)
+	}
+	if REG_FCR0 <= r && r <= REG_FCR31 {
+		return fmt.Sprintf("FCR%d", r-REG_FCR0)
+	}
+	if r == REG_HI {
+		return "HI"
+	}
+	if r == REG_LO {
+		return "LO"
+	}
+
+	return fmt.Sprintf("Rgok(%d)", r-obj.RBaseMIPS64)
+}
+
+func DRconv(a int) string {
+	s := "C_??"
+	if a >= C_NONE && a <= C_NCLASS {
+		s = cnames0[a]
+	}
+	var fp string
+	fp += s
+	return fp
+}
diff --git a/vendor/github.com/google/gops/internal/obj/mips/obj0.go b/vendor/github.com/google/gops/internal/obj/mips/obj0.go
new file mode 100644
index 00000000..d2895395
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/mips/obj0.go
@@ -0,0 +1,1497 @@
+// cmd/9l/noop.c, cmd/9l/pass.c, cmd/9l/span.c from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package mips
+
+import (
+	"fmt"
+	"math"
+
+	"github.com/google/gops/internal/obj"
+	"github.com/google/gops/internal/sys"
+)
+
+func progedit(ctxt *obj.Link, p *obj.Prog) {
+	p.From.Class = 0
+	p.To.Class = 0
+
+	// Rewrite JMP/JAL to symbol as TYPE_BRANCH.
+	switch p.As {
+	case AJMP,
+		AJAL,
+		ARET,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		if p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+	}
+
+	// Rewrite float constants to values stored in memory.
+	switch p.As {
+	case AMOVF:
+		if p.From.Type == obj.TYPE_FCONST {
+			f32 := float32(p.From.Val.(float64))
+			i32 := math.Float32bits(f32)
+			if i32 == 0 {
+				p.As = AMOVV
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGZERO
+				break
+			}
+			literal := fmt.Sprintf("$f32.%08x", i32)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 4
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+	case AMOVD:
+		if p.From.Type == obj.TYPE_FCONST {
+			i64 := math.Float64bits(p.From.Val.(float64))
+			if i64 == 0 {
+				p.As = AMOVV
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGZERO
+				break
+			}
+			literal := fmt.Sprintf("$f64.%016x", i64)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 8
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+		// Put >32-bit constants in memory and load them
+	case AMOVV:
+		if p.From.Type == obj.TYPE_CONST && p.From.Name == obj.NAME_NONE && p.From.Reg == 0 && int64(int32(p.From.Offset)) != p.From.Offset {
+			literal := fmt.Sprintf("$i64.%016x", uint64(p.From.Offset))
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 8
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+	}
+
+	// Rewrite SUB constants into ADD.
+	switch p.As {
+	case ASUB:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADD
+		}
+
+	case ASUBU:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDU
+		}
+
+	case ASUBV:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDV
+		}
+
+	case ASUBVU:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDVU
+		}
+	}
+}
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
+	// TODO(minux): add morestack short-cuts with small fixed frame-size.
+	ctxt.Cursym = cursym
+
+	// a switch for enabling/disabling instruction scheduling
+	nosched := true
+
+	if cursym.Text == nil || cursym.Text.Link == nil {
+		return
+	}
+
+	p := cursym.Text
+	textstksiz := p.To.Offset
+
+	cursym.Args = p.To.Val.(int32)
+	cursym.Locals = int32(textstksiz)
+
+	/*
+	 * find leaf subroutines
+	 * strip NOPs
+	 * expand RET
+	 * expand BECOME pseudo
+	 */
+	if ctxt.Debugvlog != 0 {
+		ctxt.Logf("%5.2f noops\n", obj.Cputime())
+	}
+
+	var q *obj.Prog
+	var q1 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		switch p.As {
+		/* too hard, just leave alone */
+		case obj.ATEXT:
+			q = p
+
+			p.Mark |= LABEL | LEAF | SYNC
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+
+		/* too hard, just leave alone */
+		case AMOVW,
+			AMOVV:
+			q = p
+			if p.To.Type == obj.TYPE_REG && p.To.Reg >= REG_SPECIAL {
+				p.Mark |= LABEL | SYNC
+				break
+			}
+			if p.From.Type == obj.TYPE_REG && p.From.Reg >= REG_SPECIAL {
+				p.Mark |= LABEL | SYNC
+			}
+
+		/* too hard, just leave alone */
+		case ASYSCALL,
+			AWORD,
+			ATLBWR,
+			ATLBWI,
+			ATLBP,
+			ATLBR:
+			q = p
+			p.Mark |= LABEL | SYNC
+
+		case ANOR:
+			q = p
+			if p.To.Type == obj.TYPE_REG {
+				if p.To.Reg == REGZERO {
+					p.Mark |= LABEL | SYNC
+				}
+			}
+
+		case ABGEZAL,
+			ABLTZAL,
+			AJAL,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			cursym.Text.Mark &^= LEAF
+			fallthrough
+
+		case AJMP,
+			ABEQ,
+			ABGEZ,
+			ABGTZ,
+			ABLEZ,
+			ABLTZ,
+			ABNE,
+			ABFPT, ABFPF:
+			if p.As == ABFPT || p.As == ABFPF {
+				// We don't treat ABFPT and ABFPF as branches here,
+				// so that we will always fill nop (0x0) in their
+				// delay slot during assembly.
+				// This is to workaround a kernel FPU emulator bug
+				// where it uses the user stack to simulate the
+				// instruction in the delay slot if it's not 0x0,
+				// and somehow that leads to SIGSEGV when the kernel
+				// jump to the stack.
+				p.Mark |= SYNC
+			} else {
+				p.Mark |= BRANCH
+			}
+			q = p
+			q1 = p.Pcond
+			if q1 != nil {
+				for q1.As == obj.ANOP {
+					q1 = q1.Link
+					p.Pcond = q1
+				}
+
+				if q1.Mark&LEAF == 0 {
+					q1.Mark |= LABEL
+				}
+			}
+			//else {
+			//	p.Mark |= LABEL
+			//}
+			q1 = p.Link
+			if q1 != nil {
+				q1.Mark |= LABEL
+			}
+			continue
+
+		case ARET:
+			q = p
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+			continue
+
+		case obj.ANOP:
+			q1 = p.Link
+			q.Link = q1 /* q is non-nop */
+			q1.Mark |= p.Mark
+			continue
+
+		default:
+			q = p
+			continue
+		}
+	}
+
+	autosize := int32(0)
+	var p1 *obj.Prog
+	var p2 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		o := p.As
+		switch o {
+		case obj.ATEXT:
+			autosize = int32(textstksiz + 8)
+			if (p.Mark&LEAF != 0) && autosize <= 8 {
+				autosize = 0
+			} else if autosize&4 != 0 {
+				autosize += 4
+			}
+			p.To.Offset = int64(autosize) - 8
+
+			if p.From3.Offset&obj.NOSPLIT == 0 {
+				p = stacksplit(ctxt, p, autosize) // emit split check
+			}
+
+			q = p
+
+			if autosize != 0 {
+				// Make sure to save link register for non-empty frame, even if
+				// it is a leaf function, so that traceback works.
+				// Store link register before decrement SP, so if a signal comes
+				// during the execution of the function prologue, the traceback
+				// code will not see a half-updated stack frame.
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVV
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REGLINK
+				q.To.Type = obj.TYPE_MEM
+				q.To.Offset = int64(-autosize)
+				q.To.Reg = REGSP
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADDV
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(-autosize)
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = +autosize
+			} else if cursym.Text.Mark&LEAF == 0 {
+				if cursym.Text.From3.Offset&obj.NOSPLIT != 0 {
+					if ctxt.Debugvlog != 0 {
+						ctxt.Logf("save suppressed in: %s\n", cursym.Name)
+					}
+
+					cursym.Text.Mark |= LEAF
+				}
+			}
+
+			if cursym.Text.Mark&LEAF != 0 {
+				cursym.Set(obj.AttrLeaf, true)
+				break
+			}
+
+			if cursym.Text.From3.Offset&obj.WRAPPER != 0 {
+				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+				//
+				//	MOVV	g_panic(g), R1
+				//	BEQ		R1, end
+				//	MOVV	panic_argp(R1), R2
+				//	ADDV	$(autosize+8), R29, R3
+				//	BNE		R2, R3, end
+				//	ADDV	$8, R29, R2
+				//	MOVV	R2, panic_argp(R1)
+				// end:
+				//	NOP
+				//
+				// The NOP is needed to give the jumps somewhere to land.
+				// It is a liblink NOP, not an mips NOP: it encodes to 0 instruction bytes.
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = AMOVV
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REGG
+				q.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R1
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABEQ
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R1
+				q.To.Type = obj.TYPE_BRANCH
+				q.Mark |= BRANCH
+				p1 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVV
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REG_R1
+				q.From.Offset = 0 // Panic.argp
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R2
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADDV
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize) + 8
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R3
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABNE
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R2
+				q.Reg = REG_R3
+				q.To.Type = obj.TYPE_BRANCH
+				q.Mark |= BRANCH
+				p2 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADDV
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = 8
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R2
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVV
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R2
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REG_R1
+				q.To.Offset = 0 // Panic.argp
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = obj.ANOP
+				p1.Pcond = q
+				p2.Pcond = q
+			}
+
+		case ARET:
+			if p.From.Type == obj.TYPE_CONST {
+				ctxt.Diag("using BECOME (%v) is not supported!", p)
+				break
+			}
+
+			retSym := p.To.Sym
+			p.To.Name = obj.NAME_NONE // clear fields as we may modify p to other instruction
+			p.To.Sym = nil
+
+			if cursym.Text.Mark&LEAF != 0 {
+				if autosize == 0 {
+					p.As = AJMP
+					p.From = obj.Addr{}
+					if retSym != nil { // retjmp
+						p.To.Type = obj.TYPE_BRANCH
+						p.To.Name = obj.NAME_EXTERN
+						p.To.Sym = retSym
+					} else {
+						p.To.Type = obj.TYPE_MEM
+						p.To.Reg = REGLINK
+						p.To.Offset = 0
+					}
+					p.Mark |= BRANCH
+					break
+				}
+
+				p.As = AADDV
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = int64(autosize)
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGSP
+				p.Spadj = -autosize
+
+				q = ctxt.NewProg()
+				q.As = AJMP
+				q.Lineno = p.Lineno
+				q.To.Type = obj.TYPE_MEM
+				q.To.Offset = 0
+				q.To.Reg = REGLINK
+				q.Mark |= BRANCH
+				q.Spadj = +autosize
+
+				q.Link = p.Link
+				p.Link = q
+				break
+			}
+
+			p.As = AMOVV
+			p.From.Type = obj.TYPE_MEM
+			p.From.Offset = 0
+			p.From.Reg = REGSP
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_R4
+			if retSym != nil { // retjmp from non-leaf, need to restore LINK register
+				p.To.Reg = REGLINK
+			}
+
+			if autosize != 0 {
+				q = ctxt.NewProg()
+				q.As = AADDV
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize)
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = -autosize
+
+				q.Link = p.Link
+				p.Link = q
+			}
+
+			q1 = ctxt.NewProg()
+			q1.As = AJMP
+			q1.Lineno = p.Lineno
+			if retSym != nil { // retjmp
+				q1.To.Type = obj.TYPE_BRANCH
+				q1.To.Name = obj.NAME_EXTERN
+				q1.To.Sym = retSym
+			} else {
+				q1.To.Type = obj.TYPE_MEM
+				q1.To.Offset = 0
+				q1.To.Reg = REG_R4
+			}
+			q1.Mark |= BRANCH
+			q1.Spadj = +autosize
+
+			q1.Link = q.Link
+			q.Link = q1
+
+		case AADDV,
+			AADDVU:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
+				p.Spadj = int32(-p.From.Offset)
+			}
+		}
+	}
+
+	if nosched {
+		// if we don't do instruction scheduling, simply add
+		// NOP after each branch instruction.
+		for p = cursym.Text; p != nil; p = p.Link {
+			if p.Mark&BRANCH != 0 {
+				addnop(ctxt, p)
+			}
+		}
+		return
+	}
+
+	// instruction scheduling
+	q = nil          // p - 1
+	q1 = cursym.Text // top of block
+	o := 0           // count of instructions
+	for p = cursym.Text; p != nil; p = p1 {
+		p1 = p.Link
+		o++
+		if p.Mark&NOSCHED != 0 {
+			if q1 != p {
+				sched(ctxt, q1, q)
+			}
+			for ; p != nil; p = p.Link {
+				if p.Mark&NOSCHED == 0 {
+					break
+				}
+				q = p
+			}
+			p1 = p
+			q1 = p
+			o = 0
+			continue
+		}
+		if p.Mark&(LABEL|SYNC) != 0 {
+			if q1 != p {
+				sched(ctxt, q1, q)
+			}
+			q1 = p
+			o = 1
+		}
+		if p.Mark&(BRANCH|SYNC) != 0 {
+			sched(ctxt, q1, p)
+			q1 = p1
+			o = 0
+		}
+		if o >= NSCHED {
+			sched(ctxt, q1, p)
+			q1 = p1
+			o = 0
+		}
+		q = p
+	}
+}
+
+func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
+	// MOVV	g_stackguard(g), R1
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVV
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REGG
+	p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+	if ctxt.Cursym.CFunc() {
+		p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+	}
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R1
+
+	var q *obj.Prog
+	if framesize <= obj.StackSmall {
+		// small stack: SP < stackguard
+		//	AGTU	SP, stackguard, R1
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ASGTU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGSP
+		p.Reg = REG_R1
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R1
+	} else if framesize <= obj.StackBig {
+		// large stack: SP-framesize < stackguard-StackSmall
+		//	ADDV	$-framesize, SP, R2
+		//	SGTU	R2, stackguard, R1
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AADDV
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(-framesize)
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASGTU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R2
+		p.Reg = REG_R1
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R1
+	} else {
+		// Such a large stack we need to protect against wraparound.
+		// If SP is close to zero:
+		//	SP-stackguard+StackGuard <= framesize + (StackGuard-StackSmall)
+		// The +StackGuard on both sides is required to keep the left side positive:
+		// SP is allowed to be slightly below stackguard. See stack.h.
+		//
+		// Preemption sets stackguard to StackPreempt, a very large value.
+		// That breaks the math above, so we have to check for that explicitly.
+		//	// stackguard is R1
+		//	MOVV	$StackPreempt, R2
+		//	BEQ	R1, R2, label-of-call-to-morestack
+		//	ADDV	$StackGuard, SP, R2
+		//	SUBVU	R1, R2
+		//	MOVV	$(framesize+(StackGuard-StackSmall)), R1
+		//	SGTU	R2, R1, R1
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AMOVV
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = obj.StackPreempt
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		q = p
+		p.As = ABEQ
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.Reg = REG_R2
+		p.To.Type = obj.TYPE_BRANCH
+		p.Mark |= BRANCH
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AADDV
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = obj.StackGuard
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASUBVU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R1
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVV
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(framesize) + obj.StackGuard - obj.StackSmall
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R1
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASGTU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R2
+		p.Reg = REG_R1
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R1
+	}
+
+	// q1: BNE	R1, done
+	p = obj.Appendp(ctxt, p)
+	q1 := p
+
+	p.As = ABNE
+	p.From.Type = obj.TYPE_REG
+	p.From.Reg = REG_R1
+	p.To.Type = obj.TYPE_BRANCH
+	p.Mark |= BRANCH
+
+	// MOVV	LINK, R3
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVV
+	p.From.Type = obj.TYPE_REG
+	p.From.Reg = REGLINK
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R3
+	if q != nil {
+		q.Pcond = p
+		p.Mark |= LABEL
+	}
+
+	// JAL	runtime.morestack(SB)
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AJAL
+	p.To.Type = obj.TYPE_BRANCH
+	if ctxt.Cursym.CFunc() {
+		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
+	} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
+		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
+	} else {
+		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack", 0)
+	}
+	p.Mark |= BRANCH
+
+	// JMP	start
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AJMP
+	p.To.Type = obj.TYPE_BRANCH
+	p.Pcond = ctxt.Cursym.Text.Link
+	p.Mark |= BRANCH
+
+	// placeholder for q1's jump target
+	p = obj.Appendp(ctxt, p)
+
+	p.As = obj.ANOP // zero-width place holder
+	q1.Pcond = p
+
+	return p
+}
+
+func addnop(ctxt *obj.Link, p *obj.Prog) {
+	q := ctxt.NewProg()
+	// we want to use the canonical NOP (SLL $0,R0,R0) here,
+	// however, as the assembler will always replace $0
+	// as R0, we have to resort to manually encode the SLL
+	// instruction as WORD $0.
+	q.As = AWORD
+	q.Lineno = p.Lineno
+	q.From.Type = obj.TYPE_CONST
+	q.From.Name = obj.NAME_NONE
+	q.From.Offset = 0
+
+	q.Link = p.Link
+	p.Link = q
+}
+
+const (
+	E_HILO  = 1 << 0
+	E_FCR   = 1 << 1
+	E_MCR   = 1 << 2
+	E_MEM   = 1 << 3
+	E_MEMSP = 1 << 4 /* uses offset and size */
+	E_MEMSB = 1 << 5 /* uses offset and size */
+	ANYMEM  = E_MEM | E_MEMSP | E_MEMSB
+	//DELAY = LOAD|BRANCH|FCMP
+	DELAY = BRANCH /* only schedule branch */
+)
+
+type Dep struct {
+	ireg uint32
+	freg uint32
+	cc   uint32
+}
+
+type Sch struct {
+	p       obj.Prog
+	set     Dep
+	used    Dep
+	soffset int32
+	size    uint8
+	nop     uint8
+	comp    bool
+}
+
+func sched(ctxt *obj.Link, p0, pe *obj.Prog) {
+	var sch [NSCHED]Sch
+
+	/*
+	 * build side structure
+	 */
+	s := sch[:]
+	for p := p0; ; p = p.Link {
+		s[0].p = *p
+		markregused(ctxt, &s[0])
+		if p == pe {
+			break
+		}
+		s = s[1:]
+	}
+	se := s
+
+	for i := cap(sch) - cap(se); i >= 0; i-- {
+		s = sch[i:]
+		if s[0].p.Mark&DELAY == 0 {
+			continue
+		}
+		if -cap(s) < -cap(se) {
+			if !conflict(&s[0], &s[1]) {
+				continue
+			}
+		}
+
+		var t []Sch
+		var j int
+		for j = cap(sch) - cap(s) - 1; j >= 0; j-- {
+			t = sch[j:]
+			if t[0].comp {
+				if s[0].p.Mark&BRANCH != 0 {
+					goto no2
+				}
+			}
+			if t[0].p.Mark&DELAY != 0 {
+				if -cap(s) >= -cap(se) || conflict(&t[0], &s[1]) {
+					goto no2
+				}
+			}
+			for u := t[1:]; -cap(u) <= -cap(s); u = u[1:] {
+				if depend(ctxt, &u[0], &t[0]) {
+					goto no2
+				}
+			}
+			goto out2
+		no2:
+		}
+
+		if s[0].p.Mark&BRANCH != 0 {
+			s[0].nop = 1
+		}
+		continue
+
+	out2:
+		// t[0] is the instruction being moved to fill the delay
+		stmp := t[0]
+		copy(t[:i-j], t[1:i-j+1])
+		s[0] = stmp
+
+		if t[i-j-1].p.Mark&BRANCH != 0 {
+			// t[i-j] is being put into a branch delay slot
+			// combine its Spadj with the branch instruction
+			t[i-j-1].p.Spadj += t[i-j].p.Spadj
+			t[i-j].p.Spadj = 0
+		}
+
+		i--
+	}
+
+	/*
+	 * put it all back
+	 */
+	var p *obj.Prog
+	var q *obj.Prog
+	for s, p = sch[:], p0; -cap(s) <= -cap(se); s, p = s[1:], q {
+		q = p.Link
+		if q != s[0].p.Link {
+			*p = s[0].p
+			p.Link = q
+		}
+		for s[0].nop != 0 {
+			s[0].nop--
+			addnop(ctxt, p)
+		}
+	}
+}
+
+func markregused(ctxt *obj.Link, s *Sch) {
+	p := &s.p
+	s.comp = compound(ctxt, p)
+	s.nop = 0
+	if s.comp {
+		s.set.ireg |= 1 << (REGTMP - REG_R0)
+		s.used.ireg |= 1 << (REGTMP - REG_R0)
+	}
+
+	ar := 0  /* dest is really reference */
+	ad := 0  /* source/dest is really address */
+	ld := 0  /* opcode is load instruction */
+	sz := 20 /* size of load/store for overlap computation */
+
+	/*
+	 * flags based on opcode
+	 */
+	switch p.As {
+	case obj.ATEXT:
+		ctxt.Autosize = int32(p.To.Offset + 8)
+		ad = 1
+
+	case AJAL:
+		c := p.Reg
+		if c == 0 {
+			c = REGLINK
+		}
+		s.set.ireg |= 1 << uint(c-REG_R0)
+		ar = 1
+		ad = 1
+
+	case ABGEZAL,
+		ABLTZAL:
+		s.set.ireg |= 1 << (REGLINK - REG_R0)
+		fallthrough
+	case ABEQ,
+		ABGEZ,
+		ABGTZ,
+		ABLEZ,
+		ABLTZ,
+		ABNE:
+		ar = 1
+		ad = 1
+
+	case ABFPT,
+		ABFPF:
+		ad = 1
+		s.used.cc |= E_FCR
+
+	case ACMPEQD,
+		ACMPEQF,
+		ACMPGED,
+		ACMPGEF,
+		ACMPGTD,
+		ACMPGTF:
+		ar = 1
+		s.set.cc |= E_FCR
+		p.Mark |= FCMP
+
+	case AJMP:
+		ar = 1
+		ad = 1
+
+	case AMOVB,
+		AMOVBU:
+		sz = 1
+		ld = 1
+
+	case AMOVH,
+		AMOVHU:
+		sz = 2
+		ld = 1
+
+	case AMOVF,
+		AMOVW,
+		AMOVWL,
+		AMOVWR:
+		sz = 4
+		ld = 1
+
+	case AMOVD,
+		AMOVV,
+		AMOVVL,
+		AMOVVR:
+		sz = 8
+		ld = 1
+
+	case ADIV,
+		ADIVU,
+		AMUL,
+		AMULU,
+		AREM,
+		AREMU,
+		ADIVV,
+		ADIVVU,
+		AMULV,
+		AMULVU,
+		AREMV,
+		AREMVU:
+		s.set.cc = E_HILO
+		fallthrough
+	case AADD,
+		AADDU,
+		AADDV,
+		AADDVU,
+		AAND,
+		ANOR,
+		AOR,
+		ASGT,
+		ASGTU,
+		ASLL,
+		ASRA,
+		ASRL,
+		ASLLV,
+		ASRAV,
+		ASRLV,
+		ASUB,
+		ASUBU,
+		ASUBV,
+		ASUBVU,
+		AXOR,
+
+		AADDD,
+		AADDF,
+		AADDW,
+		ASUBD,
+		ASUBF,
+		ASUBW,
+		AMULF,
+		AMULD,
+		AMULW,
+		ADIVF,
+		ADIVD,
+		ADIVW:
+		if p.Reg == 0 {
+			if p.To.Type == obj.TYPE_REG {
+				p.Reg = p.To.Reg
+			}
+			//if(p->reg == NREG)
+			//	print("botch %P\n", p);
+		}
+	}
+
+	/*
+	 * flags based on 'to' field
+	 */
+	c := int(p.To.Class)
+	if c == 0 {
+		c = aclass(ctxt, &p.To) + 1
+		p.To.Class = int8(c)
+	}
+	c--
+	switch c {
+	default:
+		fmt.Printf("unknown class %d %v\n", c, p)
+
+	case C_ZCON,
+		C_SCON,
+		C_ADD0CON,
+		C_AND0CON,
+		C_ADDCON,
+		C_ANDCON,
+		C_UCON,
+		C_LCON,
+		C_NONE,
+		C_SBRA,
+		C_LBRA,
+		C_ADDR,
+		C_TEXTSIZE:
+		break
+
+	case C_HI,
+		C_LO:
+		s.set.cc |= E_HILO
+
+	case C_FCREG:
+		s.set.cc |= E_FCR
+
+	case C_MREG:
+		s.set.cc |= E_MCR
+
+	case C_ZOREG,
+		C_SOREG,
+		C_LOREG:
+		c = int(p.To.Reg)
+		s.used.ireg |= 1 << uint(c-REG_R0)
+		if ad != 0 {
+			break
+		}
+		s.size = uint8(sz)
+		s.soffset = regoff(ctxt, &p.To)
+
+		m := uint32(ANYMEM)
+		if c == REGSB {
+			m = E_MEMSB
+		}
+		if c == REGSP {
+			m = E_MEMSP
+		}
+
+		if ar != 0 {
+			s.used.cc |= m
+		} else {
+			s.set.cc |= m
+		}
+
+	case C_SACON,
+		C_LACON:
+		s.used.ireg |= 1 << (REGSP - REG_R0)
+
+	case C_SECON,
+		C_LECON:
+		s.used.ireg |= 1 << (REGSB - REG_R0)
+
+	case C_REG:
+		if ar != 0 {
+			s.used.ireg |= 1 << uint(p.To.Reg-REG_R0)
+		} else {
+			s.set.ireg |= 1 << uint(p.To.Reg-REG_R0)
+		}
+
+	case C_FREG:
+		if ar != 0 {
+			s.used.freg |= 1 << uint(p.To.Reg-REG_F0)
+		} else {
+			s.set.freg |= 1 << uint(p.To.Reg-REG_F0)
+		}
+		if ld != 0 && p.From.Type == obj.TYPE_REG {
+			p.Mark |= LOAD
+		}
+
+	case C_SAUTO,
+		C_LAUTO:
+		s.used.ireg |= 1 << (REGSP - REG_R0)
+		if ad != 0 {
+			break
+		}
+		s.size = uint8(sz)
+		s.soffset = regoff(ctxt, &p.To)
+
+		if ar != 0 {
+			s.used.cc |= E_MEMSP
+		} else {
+			s.set.cc |= E_MEMSP
+		}
+
+	case C_SEXT,
+		C_LEXT:
+		s.used.ireg |= 1 << (REGSB - REG_R0)
+		if ad != 0 {
+			break
+		}
+		s.size = uint8(sz)
+		s.soffset = regoff(ctxt, &p.To)
+
+		if ar != 0 {
+			s.used.cc |= E_MEMSB
+		} else {
+			s.set.cc |= E_MEMSB
+		}
+	}
+
+	/*
+	 * flags based on 'from' field
+	 */
+	c = int(p.From.Class)
+	if c == 0 {
+		c = aclass(ctxt, &p.From) + 1
+		p.From.Class = int8(c)
+	}
+	c--
+	switch c {
+	default:
+		fmt.Printf("unknown class %d %v\n", c, p)
+
+	case C_ZCON,
+		C_SCON,
+		C_ADD0CON,
+		C_AND0CON,
+		C_ADDCON,
+		C_ANDCON,
+		C_UCON,
+		C_LCON,
+		C_NONE,
+		C_SBRA,
+		C_LBRA,
+		C_ADDR,
+		C_TEXTSIZE:
+		break
+
+	case C_HI,
+		C_LO:
+		s.used.cc |= E_HILO
+
+	case C_FCREG:
+		s.used.cc |= E_FCR
+
+	case C_MREG:
+		s.used.cc |= E_MCR
+
+	case C_ZOREG,
+		C_SOREG,
+		C_LOREG:
+		c = int(p.From.Reg)
+		s.used.ireg |= 1 << uint(c-REG_R0)
+		if ld != 0 {
+			p.Mark |= LOAD
+		}
+		s.size = uint8(sz)
+		s.soffset = regoff(ctxt, &p.From)
+
+		m := uint32(ANYMEM)
+		if c == REGSB {
+			m = E_MEMSB
+		}
+		if c == REGSP {
+			m = E_MEMSP
+		}
+
+		s.used.cc |= m
+
+	case C_SACON,
+		C_LACON:
+		c = int(p.From.Reg)
+		if c == 0 {
+			c = REGSP
+		}
+		s.used.ireg |= 1 << uint(c-REG_R0)
+
+	case C_SECON,
+		C_LECON:
+		s.used.ireg |= 1 << (REGSB - REG_R0)
+
+	case C_REG:
+		s.used.ireg |= 1 << uint(p.From.Reg-REG_R0)
+
+	case C_FREG:
+		s.used.freg |= 1 << uint(p.From.Reg-REG_F0)
+		if ld != 0 && p.To.Type == obj.TYPE_REG {
+			p.Mark |= LOAD
+		}
+
+	case C_SAUTO,
+		C_LAUTO:
+		s.used.ireg |= 1 << (REGSP - REG_R0)
+		if ld != 0 {
+			p.Mark |= LOAD
+		}
+		if ad != 0 {
+			break
+		}
+		s.size = uint8(sz)
+		s.soffset = regoff(ctxt, &p.From)
+
+		s.used.cc |= E_MEMSP
+
+	case C_SEXT:
+	case C_LEXT:
+		s.used.ireg |= 1 << (REGSB - REG_R0)
+		if ld != 0 {
+			p.Mark |= LOAD
+		}
+		if ad != 0 {
+			break
+		}
+		s.size = uint8(sz)
+		s.soffset = regoff(ctxt, &p.From)
+
+		s.used.cc |= E_MEMSB
+	}
+
+	c = int(p.Reg)
+	if c != 0 {
+		if REG_F0 <= c && c <= REG_F31 {
+			s.used.freg |= 1 << uint(c-REG_F0)
+		} else {
+			s.used.ireg |= 1 << uint(c-REG_R0)
+		}
+	}
+	s.set.ireg &^= (1 << (REGZERO - REG_R0)) /* R0 can't be set */
+}
+
+/*
+ * test to see if two instructions can be
+ * interchanged without changing semantics
+ */
+func depend(ctxt *obj.Link, sa, sb *Sch) bool {
+	if sa.set.ireg&(sb.set.ireg|sb.used.ireg) != 0 {
+		return true
+	}
+	if sb.set.ireg&sa.used.ireg != 0 {
+		return true
+	}
+
+	if sa.set.freg&(sb.set.freg|sb.used.freg) != 0 {
+		return true
+	}
+	if sb.set.freg&sa.used.freg != 0 {
+		return true
+	}
+
+	/*
+	 * special case.
+	 * loads from same address cannot pass.
+	 * this is for hardware fifo's and the like
+	 */
+	if sa.used.cc&sb.used.cc&E_MEM != 0 {
+		if sa.p.Reg == sb.p.Reg {
+			if regoff(ctxt, &sa.p.From) == regoff(ctxt, &sb.p.From) {
+				return true
+			}
+		}
+	}
+
+	x := (sa.set.cc & (sb.set.cc | sb.used.cc)) | (sb.set.cc & sa.used.cc)
+	if x != 0 {
+		/*
+		 * allow SB and SP to pass each other.
+		 * allow SB to pass SB iff doffsets are ok
+		 * anything else conflicts
+		 */
+		if x != E_MEMSP && x != E_MEMSB {
+			return true
+		}
+		x = sa.set.cc | sb.set.cc | sa.used.cc | sb.used.cc
+		if x&E_MEM != 0 {
+			return true
+		}
+		if offoverlap(sa, sb) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func offoverlap(sa, sb *Sch) bool {
+	if sa.soffset < sb.soffset {
+		if sa.soffset+int32(sa.size) > sb.soffset {
+			return true
+		}
+		return false
+	}
+	if sb.soffset+int32(sb.size) > sa.soffset {
+		return true
+	}
+	return false
+}
+
+/*
+ * test 2 adjacent instructions
+ * and find out if inserted instructions
+ * are desired to prevent stalls.
+ */
+func conflict(sa, sb *Sch) bool {
+	if sa.set.ireg&sb.used.ireg != 0 {
+		return true
+	}
+	if sa.set.freg&sb.used.freg != 0 {
+		return true
+	}
+	if sa.set.cc&sb.used.cc != 0 {
+		return true
+	}
+	return false
+}
+
+func compound(ctxt *obj.Link, p *obj.Prog) bool {
+	o := oplook(ctxt, p)
+	if o.size != 4 {
+		return true
+	}
+	if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSB {
+		return true
+	}
+	return false
+}
+
+func follow(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	firstp := ctxt.NewProg()
+	lastp := firstp
+	xfol(ctxt, s.Text, &lastp)
+	lastp.Link = nil
+	s.Text = firstp.Link
+}
+
+func xfol(ctxt *obj.Link, p *obj.Prog, last **obj.Prog) {
+	var q *obj.Prog
+	var r *obj.Prog
+	var i int
+
+loop:
+	if p == nil {
+		return
+	}
+	a := p.As
+	if a == AJMP {
+		q = p.Pcond
+		if (p.Mark&NOSCHED != 0) || q != nil && (q.Mark&NOSCHED != 0) {
+			p.Mark |= FOLL
+			(*last).Link = p
+			*last = p
+			p = p.Link
+			xfol(ctxt, p, last)
+			p = q
+			if p != nil && p.Mark&FOLL == 0 {
+				goto loop
+			}
+			return
+		}
+
+		if q != nil {
+			p.Mark |= FOLL
+			p = q
+			if p.Mark&FOLL == 0 {
+				goto loop
+			}
+		}
+	}
+
+	if p.Mark&FOLL != 0 {
+		i = 0
+		q = p
+		for ; i < 4; i, q = i+1, q.Link {
+			if q == *last || (q.Mark&NOSCHED != 0) {
+				break
+			}
+			a = q.As
+			if a == obj.ANOP {
+				i--
+				continue
+			}
+
+			if a == AJMP || a == ARET || a == ARFE {
+				goto copy
+			}
+			if q.Pcond == nil || (q.Pcond.Mark&FOLL != 0) {
+				continue
+			}
+			if a != ABEQ && a != ABNE {
+				continue
+			}
+
+		copy:
+			for {
+				r = ctxt.NewProg()
+				*r = *p
+				if r.Mark&FOLL == 0 {
+					fmt.Printf("can't happen 1\n")
+				}
+				r.Mark |= FOLL
+				if p != q {
+					p = p.Link
+					(*last).Link = r
+					*last = r
+					continue
+				}
+
+				(*last).Link = r
+				*last = r
+				if a == AJMP || a == ARET || a == ARFE {
+					return
+				}
+				r.As = ABNE
+				if a == ABNE {
+					r.As = ABEQ
+				}
+				r.Pcond = p.Link
+				r.Link = p.Pcond
+				if r.Link.Mark&FOLL == 0 {
+					xfol(ctxt, r.Link, last)
+				}
+				if r.Pcond.Mark&FOLL == 0 {
+					fmt.Printf("can't happen 2\n")
+				}
+				return
+			}
+		}
+
+		a = AJMP
+		q = ctxt.NewProg()
+		q.As = a
+		q.Lineno = p.Lineno
+		q.To.Type = obj.TYPE_BRANCH
+		q.To.Offset = p.Pc
+		q.Pcond = p
+		p = q
+	}
+
+	p.Mark |= FOLL
+	(*last).Link = p
+	*last = p
+	if a == AJMP || a == ARET || a == ARFE {
+		if p.Mark&NOSCHED != 0 {
+			p = p.Link
+			goto loop
+		}
+
+		return
+	}
+
+	if p.Pcond != nil {
+		if a != AJAL && p.Link != nil {
+			xfol(ctxt, p.Link, last)
+			p = p.Pcond
+			if p == nil || (p.Mark&FOLL != 0) {
+				return
+			}
+			goto loop
+		}
+	}
+
+	p = p.Link
+	goto loop
+}
+
+var Linkmips64 = obj.LinkArch{
+	Arch:       sys.ArchMIPS64,
+	Preprocess: preprocess,
+	Assemble:   span0,
+	Follow:     follow,
+	Progedit:   progedit,
+}
+
+var Linkmips64le = obj.LinkArch{
+	Arch:       sys.ArchMIPS64LE,
+	Preprocess: preprocess,
+	Assemble:   span0,
+	Follow:     follow,
+	Progedit:   progedit,
+}
diff --git a/vendor/github.com/google/gops/internal/obj/obj.go b/vendor/github.com/google/gops/internal/obj/obj.go
new file mode 100644
index 00000000..566263d3
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/obj.go
@@ -0,0 +1,306 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+import (
+	"fmt"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+// A LineHist records the history of the file input stack, which maps the virtual line number,
+// an incrementing count of lines processed in any input file and typically named lineno,
+// to a stack of file:line pairs showing the path of inclusions that led to that position.
+// The first line directive (//line in Go, #line in assembly) is treated as pushing
+// a new entry on the stack, so that errors can report both the actual and translated
+// line number.
+//
+// In typical use, the virtual lineno begins at 1, and file line numbers also begin at 1,
+// but the only requirements placed upon the numbers by this code are:
+//	- calls to Push, Update, and Pop must be monotonically increasing in lineno
+//	- except as specified by those methods, virtual and file line number increase
+//	  together, so that given (only) calls Push(10, "x.go", 1) and Pop(15),
+//	  virtual line 12 corresponds to x.go line 3.
+type LineHist struct {
+	Top               *LineStack  // current top of stack
+	Ranges            []LineRange // ranges for lookup
+	Dir               string      // directory to qualify relative paths
+	TrimPathPrefix    string      // remove leading TrimPath from recorded file names
+	PrintFilenameOnly bool        // ignore path when pretty-printing a line; internal use only
+	GOROOT            string      // current GOROOT
+}
+
+// A LineStack is an entry in the recorded line history.
+// Although the history at any given line number is a stack,
+// the record for all line processed forms a tree, with common
+// stack prefixes acting as parents.
+type LineStack struct {
+	Parent    *LineStack // parent in inclusion stack
+	Lineno    int        // virtual line number where this entry takes effect
+	File      string     // file name used to open source file, for error messages
+	AbsFile   string     // absolute file name, for pcln tables
+	FileLine  int        // line number in file at Lineno
+	Directive bool
+	Sym       *LSym // for linkgetline - TODO(rsc): remove
+}
+
+func (stk *LineStack) fileLineAt(lineno int) int {
+	return stk.FileLine + lineno - stk.Lineno
+}
+
+// The span of valid linenos in the recorded line history can be broken
+// into a set of ranges, each with a particular stack.
+// A LineRange records one such range.
+type LineRange struct {
+	Start int        // starting lineno
+	Stack *LineStack // top of stack for this range
+}
+
+// startRange starts a new range with the given top of stack.
+func (h *LineHist) startRange(lineno int, top *LineStack) {
+	h.Top = top
+	h.Ranges = append(h.Ranges, LineRange{top.Lineno, top})
+}
+
+// setFile sets stk.File = file and also derives stk.AbsFile.
+func (h *LineHist) setFile(stk *LineStack, file string) {
+	// Note: The exclusion of stk.Directive may be wrong but matches what we've done before.
+	// The check for < avoids putting a path prefix on "<autogenerated>".
+	abs := file
+	if h.Dir != "" && !filepath.IsAbs(file) && !strings.HasPrefix(file, "<") && !stk.Directive {
+		abs = filepath.Join(h.Dir, file)
+	}
+
+	// Remove leading TrimPathPrefix, or else rewrite $GOROOT to literal $GOROOT.
+	if h.TrimPathPrefix != "" && hasPathPrefix(abs, h.TrimPathPrefix) {
+		if abs == h.TrimPathPrefix {
+			abs = ""
+		} else {
+			abs = abs[len(h.TrimPathPrefix)+1:]
+		}
+	} else if hasPathPrefix(abs, h.GOROOT) {
+		abs = "$GOROOT" + abs[len(h.GOROOT):]
+	}
+	if abs == "" {
+		abs = "??"
+	}
+	abs = filepath.Clean(abs)
+	stk.AbsFile = abs
+
+	if file == "" {
+		file = "??"
+	}
+	stk.File = file
+}
+
+// Does s have t as a path prefix?
+// That is, does s == t or does s begin with t followed by a slash?
+// For portability, we allow ASCII case folding, so that hasPathPrefix("a/b/c", "A/B") is true.
+// Similarly, we allow slash folding, so that hasPathPrefix("a/b/c", "a\\b") is true.
+// We do not allow full Unicode case folding, for fear of causing more confusion
+// or harm than good. (For an example of the kinds of things that can go wrong,
+// see http://article.gmane.org/gmane.linux.kernel/1853266.)
+func hasPathPrefix(s string, t string) bool {
+	if len(t) > len(s) {
+		return false
+	}
+	var i int
+	for i = 0; i < len(t); i++ {
+		cs := int(s[i])
+		ct := int(t[i])
+		if 'A' <= cs && cs <= 'Z' {
+			cs += 'a' - 'A'
+		}
+		if 'A' <= ct && ct <= 'Z' {
+			ct += 'a' - 'A'
+		}
+		if cs == '\\' {
+			cs = '/'
+		}
+		if ct == '\\' {
+			ct = '/'
+		}
+		if cs != ct {
+			return false
+		}
+	}
+	return i >= len(s) || s[i] == '/' || s[i] == '\\'
+}
+
+// Push records that at that lineno a new file with the given name was pushed onto the input stack.
+func (h *LineHist) Push(lineno int, file string) {
+	stk := &LineStack{
+		Parent:   h.Top,
+		Lineno:   lineno,
+		FileLine: 1,
+	}
+	h.setFile(stk, file)
+	h.startRange(lineno, stk)
+}
+
+// Pop records that at lineno the current file was popped from the input stack.
+func (h *LineHist) Pop(lineno int) {
+	top := h.Top
+	if top == nil {
+		return
+	}
+	if top.Directive && top.Parent != nil { // pop #line level too
+		top = top.Parent
+	}
+	next := top.Parent
+	if next == nil {
+		h.Top = nil
+		h.Ranges = append(h.Ranges, LineRange{lineno, nil})
+		return
+	}
+
+	// Popping included file. Update parent offset to account for
+	// the virtual line number range taken by the included file.
+	// Cannot modify the LineStack directly, or else lookups
+	// for the earlier line numbers will get the wrong answers,
+	// so make a new one.
+	stk := new(LineStack)
+	*stk = *next
+	stk.Lineno = lineno
+	stk.FileLine = next.fileLineAt(top.Lineno)
+	h.startRange(lineno, stk)
+}
+
+// Update records that at lineno the file name and line number were changed using
+// a line directive (//line in Go, #line in assembly).
+func (h *LineHist) Update(lineno int, file string, line int) {
+	top := h.Top
+	if top == nil {
+		return // shouldn't happen
+	}
+	var stk *LineStack
+	if top.Directive {
+		// Update existing entry, except make copy to avoid changing earlier history.
+		stk = new(LineStack)
+		*stk = *top
+	} else {
+		// Push new entry.
+		stk = &LineStack{
+			Parent:    top,
+			Directive: true,
+		}
+	}
+	stk.Lineno = lineno
+	if stk.File != file {
+		h.setFile(stk, file) // only retain string if needed
+	}
+	stk.FileLine = line
+	h.startRange(lineno, stk)
+}
+
+// AddImport adds a package to the list of imported packages.
+func (ctxt *Link) AddImport(pkg string) {
+	ctxt.Imports = append(ctxt.Imports, pkg)
+}
+
+// At returns the input stack in effect at lineno.
+func (h *LineHist) At(lineno int) *LineStack {
+	i := sort.Search(len(h.Ranges), func(i int) bool {
+		return h.Ranges[i].Start > lineno
+	})
+	// Found first entry beyond lineno.
+	if i == 0 {
+		return nil
+	}
+	return h.Ranges[i-1].Stack
+}
+
+// LineString returns a string giving the file and line number
+// corresponding to lineno, for use in error messages.
+func (h *LineHist) LineString(lineno int) string {
+	stk := h.At(lineno)
+	if stk == nil {
+		return "<unknown line number>"
+	}
+
+	filename := stk.File
+	if h.PrintFilenameOnly {
+		filename = filepath.Base(filename)
+	}
+	text := fmt.Sprintf("%s:%d", filename, stk.fileLineAt(lineno))
+	if stk.Directive && stk.Parent != nil {
+		stk = stk.Parent
+		filename = stk.File
+		if h.PrintFilenameOnly {
+			filename = filepath.Base(filename)
+		}
+		text += fmt.Sprintf("[%s:%d]", filename, stk.fileLineAt(lineno))
+	}
+	const showFullStack = false // was used by old C compilers
+	if showFullStack {
+		for stk.Parent != nil {
+			lineno = stk.Lineno - 1
+			stk = stk.Parent
+			text += fmt.Sprintf(" %s:%d", filename, stk.fileLineAt(lineno))
+			if stk.Directive && stk.Parent != nil {
+				stk = stk.Parent
+				text += fmt.Sprintf("[%s:%d]", filename, stk.fileLineAt(lineno))
+			}
+		}
+	}
+	return text
+}
+
+// FileLine returns the file name and line number
+// at the top of the stack for the given lineno.
+func (h *LineHist) FileLine(lineno int) (file string, line int) {
+	stk := h.At(lineno)
+	if stk == nil {
+		return "??", 0
+	}
+	return stk.File, stk.fileLineAt(lineno)
+}
+
+// AbsFileLine returns the absolute file name and line number
+// at the top of the stack for the given lineno.
+func (h *LineHist) AbsFileLine(lineno int) (file string, line int) {
+	stk := h.At(lineno)
+	if stk == nil {
+		return "??", 0
+	}
+	return stk.AbsFile, stk.fileLineAt(lineno)
+}
+
+// This is a simplified copy of linklinefmt above.
+// It doesn't allow printing the full stack, and it returns the file name and line number separately.
+// TODO: Unify with linklinefmt somehow.
+func linkgetline(ctxt *Link, lineno int32) (f *LSym, l int32) {
+	stk := ctxt.LineHist.At(int(lineno))
+	if stk == nil || stk.AbsFile == "" {
+		return Linklookup(ctxt, "??", HistVersion), 0
+	}
+	if stk.Sym == nil {
+		stk.Sym = Linklookup(ctxt, stk.AbsFile, HistVersion)
+	}
+	return stk.Sym, int32(stk.fileLineAt(int(lineno)))
+}
+
+func Linkprfile(ctxt *Link, line int) {
+	fmt.Printf("%s ", ctxt.LineHist.LineString(line))
+}
+
+func fieldtrack(ctxt *Link, cursym *LSym) {
+	p := cursym.Text
+	if p == nil || p.Link == nil { // handle external functions and ELF section symbols
+		return
+	}
+	ctxt.Cursym = cursym
+
+	for ; p != nil; p = p.Link {
+		if p.As == AUSEFIELD {
+			r := Addrel(ctxt.Cursym)
+			r.Off = 0
+			r.Siz = 0
+			r.Sym = p.From.Sym
+			r.Type = R_USEFIELD
+		}
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/objfile.go b/vendor/github.com/google/gops/internal/obj/objfile.go
new file mode 100644
index 00000000..8a897f09
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/objfile.go
@@ -0,0 +1,606 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Writing of Go object files.
+//
+// Originally, Go object files were Plan 9 object files, but no longer.
+// Now they are more like standard object files, in that each symbol is defined
+// by an associated memory image (bytes) and a list of relocations to apply
+// during linking. We do not (yet?) use a standard file format, however.
+// For now, the format is chosen to be as simple as possible to read and write.
+// It may change for reasons of efficiency, or we may even switch to a
+// standard file format if there are compelling benefits to doing so.
+// See golang.org/s/go13linker for more background.
+//
+// The file format is:
+//
+//	- magic header: "\x00\x00go17ld"
+//	- byte 1 - version number
+//	- sequence of strings giving dependencies (imported packages)
+//	- empty string (marks end of sequence)
+//	- sequence of symbol references used by the defined symbols
+//	- byte 0xff (marks end of sequence)
+//	- sequence of integer lengths:
+//		- total data length
+//		- total number of relocations
+//		- total number of pcdata
+//		- total number of automatics
+//		- total number of funcdata
+//		- total number of files
+//	- data, the content of the defined symbols
+//	- sequence of defined symbols
+//	- byte 0xff (marks end of sequence)
+//	- magic footer: "\xff\xffgo17ld"
+//
+// All integers are stored in a zigzag varint format.
+// See golang.org/s/go12symtab for a definition.
+//
+// Data blocks and strings are both stored as an integer
+// followed by that many bytes.
+//
+// A symbol reference is a string name followed by a version.
+//
+// A symbol points to other symbols using an index into the symbol
+// reference sequence. Index 0 corresponds to a nil LSym* pointer.
+// In the symbol layout described below "symref index" stands for this
+// index.
+//
+// Each symbol is laid out as the following fields (taken from LSym*):
+//
+//	- byte 0xfe (sanity check for synchronization)
+//	- type [int]
+//	- name & version [symref index]
+//	- flags [int]
+//		1<<0 dupok
+//		1<<1 local
+//		1<<2 add to typelink table
+//	- size [int]
+//	- gotype [symref index]
+//	- p [data block]
+//	- nr [int]
+//	- r [nr relocations, sorted by off]
+//
+// If type == STEXT, there are a few more fields:
+//
+//	- args [int]
+//	- locals [int]
+//	- nosplit [int]
+//	- flags [int]
+//		1<<0 leaf
+//		1<<1 C function
+//		1<<2 function may call reflect.Type.Method
+//	- nlocal [int]
+//	- local [nlocal automatics]
+//	- pcln [pcln table]
+//
+// Each relocation has the encoding:
+//
+//	- off [int]
+//	- siz [int]
+//	- type [int]
+//	- add [int]
+//	- sym [symref index]
+//
+// Each local has the encoding:
+//
+//	- asym [symref index]
+//	- offset [int]
+//	- type [int]
+//	- gotype [symref index]
+//
+// The pcln table has the encoding:
+//
+//	- pcsp [data block]
+//	- pcfile [data block]
+//	- pcline [data block]
+//	- npcdata [int]
+//	- pcdata [npcdata data blocks]
+//	- nfuncdata [int]
+//	- funcdata [nfuncdata symref index]
+//	- funcdatasym [nfuncdata ints]
+//	- nfile [int]
+//	- file [nfile symref index]
+//
+// The file layout and meaning of type integers are architecture-independent.
+//
+// TODO(rsc): The file format is good for a first pass but needs work.
+//	- There are SymID in the object file that should really just be strings.
+
+package obj
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"path/filepath"
+	"sort"
+
+	"github.com/google/gops/internal/dwarf"
+	"github.com/google/gops/internal/sys"
+)
+
+// The Go and C compilers, and the assembler, call writeobj to write
+// out a Go object file. The linker does not call this; the linker
+// does not write out object files.
+func Writeobjdirect(ctxt *Link, b *bufio.Writer) {
+	Flushplist(ctxt)
+	WriteObjFile(ctxt, b)
+}
+
+// objWriter writes Go object files.
+type objWriter struct {
+	wr   *bufio.Writer
+	ctxt *Link
+	// Temporary buffer for zigzag int writing.
+	varintbuf [10]uint8
+
+	// Provide the the index of a symbol reference by symbol name.
+	// One map for versioned symbols and one for unversioned symbols.
+	// Used for deduplicating the symbol reference list.
+	refIdx  map[string]int
+	vrefIdx map[string]int
+
+	// Number of objects written of each type.
+	nRefs     int
+	nData     int
+	nReloc    int
+	nPcdata   int
+	nAutom    int
+	nFuncdata int
+	nFile     int
+}
+
+func (w *objWriter) addLengths(s *LSym) {
+	w.nData += len(s.P)
+	w.nReloc += len(s.R)
+
+	if s.Type != STEXT {
+		return
+	}
+
+	pc := s.Pcln
+
+	data := 0
+	data += len(pc.Pcsp.P)
+	data += len(pc.Pcfile.P)
+	data += len(pc.Pcline.P)
+	for i := 0; i < len(pc.Pcdata); i++ {
+		data += len(pc.Pcdata[i].P)
+	}
+
+	w.nData += data
+	w.nPcdata += len(pc.Pcdata)
+
+	autom := 0
+	for a := s.Autom; a != nil; a = a.Link {
+		autom++
+	}
+	w.nAutom += autom
+	w.nFuncdata += len(pc.Funcdataoff)
+	w.nFile += len(pc.File)
+}
+
+func (w *objWriter) writeLengths() {
+	w.writeInt(int64(w.nData))
+	w.writeInt(int64(w.nReloc))
+	w.writeInt(int64(w.nPcdata))
+	w.writeInt(int64(w.nAutom))
+	w.writeInt(int64(w.nFuncdata))
+	w.writeInt(int64(w.nFile))
+}
+
+func newObjWriter(ctxt *Link, b *bufio.Writer) *objWriter {
+	return &objWriter{
+		ctxt:    ctxt,
+		wr:      b,
+		vrefIdx: make(map[string]int),
+		refIdx:  make(map[string]int),
+	}
+}
+
+func WriteObjFile(ctxt *Link, b *bufio.Writer) {
+	w := newObjWriter(ctxt, b)
+
+	// Magic header
+	w.wr.WriteString("\x00\x00go17ld")
+
+	// Version
+	w.wr.WriteByte(1)
+
+	// Autolib
+	for _, pkg := range ctxt.Imports {
+		w.writeString(pkg)
+	}
+	w.writeString("")
+
+	// Symbol references
+	for _, s := range ctxt.Text {
+		w.writeRefs(s)
+		w.addLengths(s)
+	}
+	for _, s := range ctxt.Data {
+		w.writeRefs(s)
+		w.addLengths(s)
+	}
+	// End symbol references
+	w.wr.WriteByte(0xff)
+
+	// Lengths
+	w.writeLengths()
+
+	// Data block
+	for _, s := range ctxt.Text {
+		w.wr.Write(s.P)
+		pc := s.Pcln
+		w.wr.Write(pc.Pcsp.P)
+		w.wr.Write(pc.Pcfile.P)
+		w.wr.Write(pc.Pcline.P)
+		for i := 0; i < len(pc.Pcdata); i++ {
+			w.wr.Write(pc.Pcdata[i].P)
+		}
+	}
+	for _, s := range ctxt.Data {
+		w.wr.Write(s.P)
+	}
+
+	// Symbols
+	for _, s := range ctxt.Text {
+		w.writeSym(s)
+	}
+	for _, s := range ctxt.Data {
+		w.writeSym(s)
+	}
+
+	// Magic footer
+	w.wr.WriteString("\xff\xffgo17ld")
+}
+
+// Symbols are prefixed so their content doesn't get confused with the magic footer.
+const symPrefix = 0xfe
+
+func (w *objWriter) writeRef(s *LSym, isPath bool) {
+	if s == nil || s.RefIdx != 0 {
+		return
+	}
+	var m map[string]int
+	switch s.Version {
+	case 0:
+		m = w.refIdx
+	case 1:
+		m = w.vrefIdx
+	default:
+		log.Fatalf("%s: invalid version number %d", s.Name, s.Version)
+	}
+
+	idx := m[s.Name]
+	if idx != 0 {
+		s.RefIdx = idx
+		return
+	}
+	w.wr.WriteByte(symPrefix)
+	if isPath {
+		w.writeString(filepath.ToSlash(s.Name))
+	} else {
+		w.writeString(s.Name)
+	}
+	w.writeInt(int64(s.Version))
+	w.nRefs++
+	s.RefIdx = w.nRefs
+	m[s.Name] = w.nRefs
+}
+
+func (w *objWriter) writeRefs(s *LSym) {
+	w.writeRef(s, false)
+	w.writeRef(s.Gotype, false)
+	for i := range s.R {
+		w.writeRef(s.R[i].Sym, false)
+	}
+
+	if s.Type == STEXT {
+		for a := s.Autom; a != nil; a = a.Link {
+			w.writeRef(a.Asym, false)
+			w.writeRef(a.Gotype, false)
+		}
+		pc := s.Pcln
+		for _, d := range pc.Funcdata {
+			w.writeRef(d, false)
+		}
+		for _, f := range pc.File {
+			w.writeRef(f, true)
+		}
+	}
+}
+
+func (w *objWriter) writeSymDebug(s *LSym) {
+	ctxt := w.ctxt
+	fmt.Fprintf(ctxt.Bso, "%s ", s.Name)
+	if s.Version != 0 {
+		fmt.Fprintf(ctxt.Bso, "v=%d ", s.Version)
+	}
+	if s.Type != 0 {
+		fmt.Fprintf(ctxt.Bso, "t=%d ", s.Type)
+	}
+	if s.DuplicateOK() {
+		fmt.Fprintf(ctxt.Bso, "dupok ")
+	}
+	if s.CFunc() {
+		fmt.Fprintf(ctxt.Bso, "cfunc ")
+	}
+	if s.NoSplit() {
+		fmt.Fprintf(ctxt.Bso, "nosplit ")
+	}
+	fmt.Fprintf(ctxt.Bso, "size=%d", s.Size)
+	if s.Type == STEXT {
+		fmt.Fprintf(ctxt.Bso, " args=%#x locals=%#x", uint64(s.Args), uint64(s.Locals))
+		if s.Leaf() {
+			fmt.Fprintf(ctxt.Bso, " leaf")
+		}
+	}
+
+	fmt.Fprintf(ctxt.Bso, "\n")
+	for p := s.Text; p != nil; p = p.Link {
+		fmt.Fprintf(ctxt.Bso, "\t%#04x %v\n", uint(int(p.Pc)), p)
+	}
+	var c int
+	var j int
+	for i := 0; i < len(s.P); {
+		fmt.Fprintf(ctxt.Bso, "\t%#04x", uint(i))
+		for j = i; j < i+16 && j < len(s.P); j++ {
+			fmt.Fprintf(ctxt.Bso, " %02x", s.P[j])
+		}
+		for ; j < i+16; j++ {
+			fmt.Fprintf(ctxt.Bso, "   ")
+		}
+		fmt.Fprintf(ctxt.Bso, "  ")
+		for j = i; j < i+16 && j < len(s.P); j++ {
+			c = int(s.P[j])
+			if ' ' <= c && c <= 0x7e {
+				fmt.Fprintf(ctxt.Bso, "%c", c)
+			} else {
+				fmt.Fprintf(ctxt.Bso, ".")
+			}
+		}
+
+		fmt.Fprintf(ctxt.Bso, "\n")
+		i += 16
+	}
+
+	sort.Sort(relocByOff(s.R)) // generate stable output
+	for _, r := range s.R {
+		name := ""
+		if r.Sym != nil {
+			name = r.Sym.Name
+		} else if r.Type == R_TLS_LE {
+			name = "TLS"
+		}
+		if ctxt.Arch.InFamily(sys.ARM, sys.PPC64) {
+			fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s+%x\n", int(r.Off), r.Siz, r.Type, name, uint64(r.Add))
+		} else {
+			fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s+%d\n", int(r.Off), r.Siz, r.Type, name, r.Add)
+		}
+	}
+}
+
+func (w *objWriter) writeSym(s *LSym) {
+	ctxt := w.ctxt
+	if ctxt.Debugasm != 0 {
+		w.writeSymDebug(s)
+	}
+
+	w.wr.WriteByte(symPrefix)
+	w.writeInt(int64(s.Type))
+	w.writeRefIndex(s)
+	flags := int64(0)
+	if s.DuplicateOK() {
+		flags |= 1
+	}
+	if s.Local() {
+		flags |= 1 << 1
+	}
+	if s.MakeTypelink() {
+		flags |= 1 << 2
+	}
+	w.writeInt(flags)
+	w.writeInt(s.Size)
+	w.writeRefIndex(s.Gotype)
+	w.writeInt(int64(len(s.P)))
+
+	w.writeInt(int64(len(s.R)))
+	var r *Reloc
+	for i := 0; i < len(s.R); i++ {
+		r = &s.R[i]
+		w.writeInt(int64(r.Off))
+		w.writeInt(int64(r.Siz))
+		w.writeInt(int64(r.Type))
+		w.writeInt(r.Add)
+		w.writeRefIndex(r.Sym)
+	}
+
+	if s.Type != STEXT {
+		return
+	}
+
+	w.writeInt(int64(s.Args))
+	w.writeInt(int64(s.Locals))
+	if s.NoSplit() {
+		w.writeInt(1)
+	} else {
+		w.writeInt(0)
+	}
+	flags = int64(0)
+	if s.Leaf() {
+		flags |= 1
+	}
+	if s.CFunc() {
+		flags |= 1 << 1
+	}
+	if s.ReflectMethod() {
+		flags |= 1 << 2
+	}
+	w.writeInt(flags)
+	n := 0
+	for a := s.Autom; a != nil; a = a.Link {
+		n++
+	}
+	w.writeInt(int64(n))
+	for a := s.Autom; a != nil; a = a.Link {
+		w.writeRefIndex(a.Asym)
+		w.writeInt(int64(a.Aoffset))
+		if a.Name == NAME_AUTO {
+			w.writeInt(A_AUTO)
+		} else if a.Name == NAME_PARAM {
+			w.writeInt(A_PARAM)
+		} else {
+			log.Fatalf("%s: invalid local variable type %d", s.Name, a.Name)
+		}
+		w.writeRefIndex(a.Gotype)
+	}
+
+	pc := s.Pcln
+	w.writeInt(int64(len(pc.Pcsp.P)))
+	w.writeInt(int64(len(pc.Pcfile.P)))
+	w.writeInt(int64(len(pc.Pcline.P)))
+	w.writeInt(int64(len(pc.Pcdata)))
+	for i := 0; i < len(pc.Pcdata); i++ {
+		w.writeInt(int64(len(pc.Pcdata[i].P)))
+	}
+	w.writeInt(int64(len(pc.Funcdataoff)))
+	for i := 0; i < len(pc.Funcdataoff); i++ {
+		w.writeRefIndex(pc.Funcdata[i])
+	}
+	for i := 0; i < len(pc.Funcdataoff); i++ {
+		w.writeInt(pc.Funcdataoff[i])
+	}
+	w.writeInt(int64(len(pc.File)))
+	for _, f := range pc.File {
+		w.writeRefIndex(f)
+	}
+}
+
+func (w *objWriter) writeInt(sval int64) {
+	var v uint64
+	uv := (uint64(sval) << 1) ^ uint64(sval>>63)
+	p := w.varintbuf[:]
+	for v = uv; v >= 0x80; v >>= 7 {
+		p[0] = uint8(v | 0x80)
+		p = p[1:]
+	}
+	p[0] = uint8(v)
+	p = p[1:]
+	w.wr.Write(w.varintbuf[:len(w.varintbuf)-len(p)])
+}
+
+func (w *objWriter) writeString(s string) {
+	w.writeInt(int64(len(s)))
+	w.wr.WriteString(s)
+}
+
+func (w *objWriter) writeRefIndex(s *LSym) {
+	if s == nil {
+		w.writeInt(0)
+		return
+	}
+	if s.RefIdx == 0 {
+		log.Fatalln("writing an unreferenced symbol", s.Name)
+	}
+	w.writeInt(int64(s.RefIdx))
+}
+
+// relocByOff sorts relocations by their offsets.
+type relocByOff []Reloc
+
+func (x relocByOff) Len() int           { return len(x) }
+func (x relocByOff) Less(i, j int) bool { return x[i].Off < x[j].Off }
+func (x relocByOff) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+
+// implement dwarf.Context
+type dwCtxt struct{ *Link }
+
+func (c dwCtxt) PtrSize() int {
+	return c.Arch.PtrSize
+}
+func (c dwCtxt) AddInt(s dwarf.Sym, size int, i int64) {
+	ls := s.(*LSym)
+	ls.WriteInt(c.Link, ls.Size, size, i)
+}
+func (c dwCtxt) AddBytes(s dwarf.Sym, b []byte) {
+	ls := s.(*LSym)
+	ls.WriteBytes(c.Link, ls.Size, b)
+}
+func (c dwCtxt) AddString(s dwarf.Sym, v string) {
+	ls := s.(*LSym)
+	ls.WriteString(c.Link, ls.Size, len(v), v)
+	ls.WriteInt(c.Link, ls.Size, 1, 0)
+}
+func (c dwCtxt) SymValue(s dwarf.Sym) int64 {
+	return 0
+}
+func (c dwCtxt) AddAddress(s dwarf.Sym, data interface{}, value int64) {
+	rsym := data.(*LSym)
+	ls := s.(*LSym)
+	size := c.PtrSize()
+	ls.WriteAddr(c.Link, ls.Size, size, rsym, value)
+}
+func (c dwCtxt) AddSectionOffset(s dwarf.Sym, size int, t interface{}, ofs int64) {
+	ls := s.(*LSym)
+	rsym := t.(*LSym)
+	ls.WriteAddr(c.Link, ls.Size, size, rsym, ofs)
+	r := &ls.R[len(ls.R)-1]
+	r.Type = R_DWARFREF
+}
+
+func gendwarf(ctxt *Link, text []*LSym) []*LSym {
+	dctxt := dwCtxt{ctxt}
+	var dw []*LSym
+
+	for _, s := range text {
+		dsym := Linklookup(ctxt, dwarf.InfoPrefix+s.Name, int(s.Version))
+		if dsym.Size != 0 {
+			continue
+		}
+		dw = append(dw, dsym)
+		dsym.Type = SDWARFINFO
+		dsym.Set(AttrDuplicateOK, s.DuplicateOK())
+		var vars dwarf.Var
+		var abbrev int
+		var offs int32
+		for a := s.Autom; a != nil; a = a.Link {
+			switch a.Name {
+			case NAME_AUTO:
+				abbrev = dwarf.DW_ABRV_AUTO
+				offs = a.Aoffset
+				if ctxt.FixedFrameSize() == 0 {
+					offs -= int32(ctxt.Arch.PtrSize)
+				}
+				if Framepointer_enabled(GOOS, GOARCH) {
+					offs -= int32(ctxt.Arch.PtrSize)
+				}
+
+			case NAME_PARAM:
+				abbrev = dwarf.DW_ABRV_PARAM
+				offs = a.Aoffset + int32(ctxt.FixedFrameSize())
+
+			default:
+				continue
+			}
+			typename := dwarf.InfoPrefix + a.Gotype.Name[len("type."):]
+			dwvar := &dwarf.Var{
+				Name:   a.Asym.Name,
+				Abbrev: abbrev,
+				Offset: int32(offs),
+				Type:   Linklookup(ctxt, typename, 0),
+			}
+			dws := &vars.Link
+			for ; *dws != nil; dws = &(*dws).Link {
+				if offs <= (*dws).Offset {
+					break
+				}
+			}
+			dwvar.Link = *dws
+			*dws = dwvar
+		}
+		dwarf.PutFunc(dctxt, dsym, s.Name, s.Version == 0, s, s.Size, vars.Link)
+	}
+	return dw
+}
diff --git a/vendor/github.com/google/gops/internal/obj/pass.go b/vendor/github.com/google/gops/internal/obj/pass.go
new file mode 100644
index 00000000..1d2f74b9
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/pass.go
@@ -0,0 +1,217 @@
+// Inferno utils/6l/pass.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/pass.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package obj
+
+// Code and data passes.
+
+func Brchain(ctxt *Link, p *Prog) *Prog {
+	for i := 0; i < 20; i++ {
+		if p == nil || p.As != AJMP || p.Pcond == nil {
+			return p
+		}
+		p = p.Pcond
+	}
+
+	return nil
+}
+
+func brloop(ctxt *Link, p *Prog) *Prog {
+	var q *Prog
+
+	c := 0
+	for q = p; q != nil; q = q.Pcond {
+		if q.As != AJMP || q.Pcond == nil {
+			break
+		}
+		c++
+		if c >= 5000 {
+			return nil
+		}
+	}
+
+	return q
+}
+
+func checkaddr(ctxt *Link, p *Prog, a *Addr) {
+	// Check expected encoding, especially TYPE_CONST vs TYPE_ADDR.
+	switch a.Type {
+	case TYPE_NONE:
+		return
+
+	case TYPE_BRANCH:
+		if a.Reg != 0 || a.Index != 0 || a.Scale != 0 || a.Name != 0 {
+			break
+		}
+		return
+
+	case TYPE_TEXTSIZE:
+		if a.Reg != 0 || a.Index != 0 || a.Scale != 0 || a.Name != 0 {
+			break
+		}
+		return
+
+		//if(a->u.bits != 0)
+	//	break;
+	case TYPE_MEM:
+		return
+
+		// TODO(rsc): After fixing SHRQ, check a->index != 0 too.
+	case TYPE_CONST:
+		if a.Name != 0 || a.Sym != nil || a.Reg != 0 {
+			ctxt.Diag("argument is TYPE_CONST, should be TYPE_ADDR, in %v", p)
+			return
+		}
+
+		if a.Reg != 0 || a.Scale != 0 || a.Name != 0 || a.Sym != nil || a.Val != nil {
+			break
+		}
+		return
+
+	case TYPE_FCONST, TYPE_SCONST:
+		if a.Reg != 0 || a.Index != 0 || a.Scale != 0 || a.Name != 0 || a.Offset != 0 || a.Sym != nil {
+			break
+		}
+		return
+
+	// TODO(rsc): After fixing PINSRQ, check a->offset != 0 too.
+	// TODO(rsc): After fixing SHRQ, check a->index != 0 too.
+	case TYPE_REG:
+		if a.Scale != 0 || a.Name != 0 || a.Sym != nil {
+			break
+		}
+		return
+
+	case TYPE_ADDR:
+		if a.Val != nil {
+			break
+		}
+		if a.Reg == 0 && a.Index == 0 && a.Scale == 0 && a.Name == 0 && a.Sym == nil {
+			ctxt.Diag("argument is TYPE_ADDR, should be TYPE_CONST, in %v", p)
+		}
+		return
+
+	case TYPE_SHIFT:
+		if a.Index != 0 || a.Scale != 0 || a.Name != 0 || a.Sym != nil || a.Val != nil {
+			break
+		}
+		return
+
+	case TYPE_REGREG:
+		if a.Index != 0 || a.Scale != 0 || a.Name != 0 || a.Sym != nil || a.Val != nil {
+			break
+		}
+		return
+
+	case TYPE_REGREG2:
+		return
+
+	case TYPE_REGLIST:
+		return
+
+	// Expect sym and name to be set, nothing else.
+	// Technically more is allowed, but this is only used for *name(SB).
+	case TYPE_INDIR:
+		if a.Reg != 0 || a.Index != 0 || a.Scale != 0 || a.Name == 0 || a.Offset != 0 || a.Sym == nil || a.Val != nil {
+			break
+		}
+		return
+	}
+
+	ctxt.Diag("invalid encoding for argument %v", p)
+}
+
+func linkpatch(ctxt *Link, sym *LSym) {
+	var c int32
+	var name string
+	var q *Prog
+
+	ctxt.Cursym = sym
+
+	for p := sym.Text; p != nil; p = p.Link {
+		checkaddr(ctxt, p, &p.From)
+		if p.From3 != nil {
+			checkaddr(ctxt, p, p.From3)
+		}
+		checkaddr(ctxt, p, &p.To)
+
+		if ctxt.Arch.Progedit != nil {
+			ctxt.Arch.Progedit(ctxt, p)
+		}
+		if p.To.Type != TYPE_BRANCH {
+			continue
+		}
+		if p.To.Val != nil {
+			// TODO: Remove To.Val.(*Prog) in favor of p->pcond.
+			p.Pcond = p.To.Val.(*Prog)
+			continue
+		}
+
+		if p.To.Sym != nil {
+			continue
+		}
+		c = int32(p.To.Offset)
+		for q = sym.Text; q != nil; {
+			if int64(c) == q.Pc {
+				break
+			}
+			if q.Forwd != nil && int64(c) >= q.Forwd.Pc {
+				q = q.Forwd
+			} else {
+				q = q.Link
+			}
+		}
+
+		if q == nil {
+			name = "<nil>"
+			if p.To.Sym != nil {
+				name = p.To.Sym.Name
+			}
+			ctxt.Diag("branch out of range (%#x)\n%v [%s]", uint32(c), p, name)
+			p.To.Type = TYPE_NONE
+		}
+
+		p.To.Val = q
+		p.Pcond = q
+	}
+
+	if ctxt.Flag_optimize {
+		for p := sym.Text; p != nil; p = p.Link {
+			if p.Pcond != nil {
+				p.Pcond = brloop(ctxt, p.Pcond)
+				if p.Pcond != nil {
+					if p.To.Type == TYPE_BRANCH {
+						p.To.Offset = p.Pcond.Pc
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/pcln.go b/vendor/github.com/google/gops/internal/obj/pcln.go
new file mode 100644
index 00000000..d9893e42
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/pcln.go
@@ -0,0 +1,281 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+import "log"
+
+func addvarint(ctxt *Link, d *Pcdata, val uint32) {
+	var v uint32
+	for v = val; v >= 0x80; v >>= 7 {
+		d.P = append(d.P, uint8(v|0x80))
+	}
+	d.P = append(d.P, uint8(v))
+}
+
+// funcpctab writes to dst a pc-value table mapping the code in func to the values
+// returned by valfunc parameterized by arg. The invocation of valfunc to update the
+// current value is, for each p,
+//
+//	val = valfunc(func, val, p, 0, arg);
+//	record val as value at p->pc;
+//	val = valfunc(func, val, p, 1, arg);
+//
+// where func is the function, val is the current value, p is the instruction being
+// considered, and arg can be used to further parameterize valfunc.
+func funcpctab(ctxt *Link, dst *Pcdata, func_ *LSym, desc string, valfunc func(*Link, *LSym, int32, *Prog, int32, interface{}) int32, arg interface{}) {
+	// To debug a specific function, uncomment lines and change name.
+	dbg := 0
+
+	//if func_.Name == "main.main" || desc == "pctospadj" {
+	//	dbg = 1
+	//}
+
+	ctxt.Debugpcln += int32(dbg)
+
+	dst.P = dst.P[:0]
+
+	if ctxt.Debugpcln != 0 {
+		ctxt.Logf("funcpctab %s [valfunc=%s]\n", func_.Name, desc)
+	}
+
+	val := int32(-1)
+	oldval := val
+	if func_.Text == nil {
+		ctxt.Debugpcln -= int32(dbg)
+		return
+	}
+
+	pc := func_.Text.Pc
+
+	if ctxt.Debugpcln != 0 {
+		ctxt.Logf("%6x %6d %v\n", uint64(pc), val, func_.Text)
+	}
+
+	started := int32(0)
+	var delta uint32
+	for p := func_.Text; p != nil; p = p.Link {
+		// Update val. If it's not changing, keep going.
+		val = valfunc(ctxt, func_, val, p, 0, arg)
+
+		if val == oldval && started != 0 {
+			val = valfunc(ctxt, func_, val, p, 1, arg)
+			if ctxt.Debugpcln != 0 {
+				ctxt.Logf("%6x %6s %v\n", uint64(p.Pc), "", p)
+			}
+			continue
+		}
+
+		// If the pc of the next instruction is the same as the
+		// pc of this instruction, this instruction is not a real
+		// instruction. Keep going, so that we only emit a delta
+		// for a true instruction boundary in the program.
+		if p.Link != nil && p.Link.Pc == p.Pc {
+			val = valfunc(ctxt, func_, val, p, 1, arg)
+			if ctxt.Debugpcln != 0 {
+				ctxt.Logf("%6x %6s %v\n", uint64(p.Pc), "", p)
+			}
+			continue
+		}
+
+		// The table is a sequence of (value, pc) pairs, where each
+		// pair states that the given value is in effect from the current position
+		// up to the given pc, which becomes the new current position.
+		// To generate the table as we scan over the program instructions,
+		// we emit a "(value" when pc == func->value, and then
+		// each time we observe a change in value we emit ", pc) (value".
+		// When the scan is over, we emit the closing ", pc)".
+		//
+		// The table is delta-encoded. The value deltas are signed and
+		// transmitted in zig-zag form, where a complement bit is placed in bit 0,
+		// and the pc deltas are unsigned. Both kinds of deltas are sent
+		// as variable-length little-endian base-128 integers,
+		// where the 0x80 bit indicates that the integer continues.
+
+		if ctxt.Debugpcln != 0 {
+			ctxt.Logf("%6x %6d %v\n", uint64(p.Pc), val, p)
+		}
+
+		if started != 0 {
+			addvarint(ctxt, dst, uint32((p.Pc-pc)/int64(ctxt.Arch.MinLC)))
+			pc = p.Pc
+		}
+
+		delta = uint32(val) - uint32(oldval)
+		if delta>>31 != 0 {
+			delta = 1 | ^(delta << 1)
+		} else {
+			delta <<= 1
+		}
+		addvarint(ctxt, dst, delta)
+		oldval = val
+		started = 1
+		val = valfunc(ctxt, func_, val, p, 1, arg)
+	}
+
+	if started != 0 {
+		if ctxt.Debugpcln != 0 {
+			ctxt.Logf("%6x done\n", uint64(func_.Text.Pc+func_.Size))
+		}
+		addvarint(ctxt, dst, uint32((func_.Size-pc)/int64(ctxt.Arch.MinLC)))
+		addvarint(ctxt, dst, 0) // terminator
+	}
+
+	if ctxt.Debugpcln != 0 {
+		ctxt.Logf("wrote %d bytes to %p\n", len(dst.P), dst)
+		for i := 0; i < len(dst.P); i++ {
+			ctxt.Logf(" %02x", dst.P[i])
+		}
+		ctxt.Logf("\n")
+	}
+
+	ctxt.Debugpcln -= int32(dbg)
+}
+
+// pctofileline computes either the file number (arg == 0)
+// or the line number (arg == 1) to use at p.
+// Because p->lineno applies to p, phase == 0 (before p)
+// takes care of the update.
+func pctofileline(ctxt *Link, sym *LSym, oldval int32, p *Prog, phase int32, arg interface{}) int32 {
+	if p.As == ATEXT || p.As == ANOP || p.As == AUSEFIELD || p.Lineno == 0 || phase == 1 {
+		return oldval
+	}
+	f, l := linkgetline(ctxt, p.Lineno)
+	if f == nil {
+		//	print("getline failed for %s %v\n", ctxt->cursym->name, p);
+		return oldval
+	}
+
+	if arg == nil {
+		return l
+	}
+	pcln := arg.(*Pcln)
+
+	if f == pcln.Lastfile {
+		return int32(pcln.Lastindex)
+	}
+
+	for i, file := range pcln.File {
+		if file == f {
+			pcln.Lastfile = f
+			pcln.Lastindex = i
+			return int32(i)
+		}
+	}
+	i := len(pcln.File)
+	pcln.File = append(pcln.File, f)
+	pcln.Lastfile = f
+	pcln.Lastindex = i
+	return int32(i)
+}
+
+// pctospadj computes the sp adjustment in effect.
+// It is oldval plus any adjustment made by p itself.
+// The adjustment by p takes effect only after p, so we
+// apply the change during phase == 1.
+func pctospadj(ctxt *Link, sym *LSym, oldval int32, p *Prog, phase int32, arg interface{}) int32 {
+	if oldval == -1 { // starting
+		oldval = 0
+	}
+	if phase == 0 {
+		return oldval
+	}
+	if oldval+p.Spadj < -10000 || oldval+p.Spadj > 1100000000 {
+		ctxt.Diag("overflow in spadj: %d + %d = %d", oldval, p.Spadj, oldval+p.Spadj)
+		log.Fatalf("bad code")
+	}
+
+	return oldval + p.Spadj
+}
+
+// pctopcdata computes the pcdata value in effect at p.
+// A PCDATA instruction sets the value in effect at future
+// non-PCDATA instructions.
+// Since PCDATA instructions have no width in the final code,
+// it does not matter which phase we use for the update.
+func pctopcdata(ctxt *Link, sym *LSym, oldval int32, p *Prog, phase int32, arg interface{}) int32 {
+	if phase == 0 || p.As != APCDATA || p.From.Offset != int64(arg.(uint32)) {
+		return oldval
+	}
+	if int64(int32(p.To.Offset)) != p.To.Offset {
+		ctxt.Diag("overflow in PCDATA instruction: %v", p)
+		log.Fatalf("bad code")
+	}
+
+	return int32(p.To.Offset)
+}
+
+func linkpcln(ctxt *Link, cursym *LSym) {
+	ctxt.Cursym = cursym
+
+	pcln := new(Pcln)
+	cursym.Pcln = pcln
+
+	npcdata := 0
+	nfuncdata := 0
+	for p := cursym.Text; p != nil; p = p.Link {
+		// Find the highest ID of any used PCDATA table. This ignores PCDATA table
+		// that consist entirely of "-1", since that's the assumed default value.
+		//   From.Offset is table ID
+		//   To.Offset is data
+		if p.As == APCDATA && p.From.Offset >= int64(npcdata) && p.To.Offset != -1 { // ignore -1 as we start at -1, if we only see -1, nothing changed
+			npcdata = int(p.From.Offset + 1)
+		}
+		// Find the highest ID of any FUNCDATA table.
+		//   From.Offset is table ID
+		if p.As == AFUNCDATA && p.From.Offset >= int64(nfuncdata) {
+			nfuncdata = int(p.From.Offset + 1)
+		}
+	}
+
+	pcln.Pcdata = make([]Pcdata, npcdata)
+	pcln.Pcdata = pcln.Pcdata[:npcdata]
+	pcln.Funcdata = make([]*LSym, nfuncdata)
+	pcln.Funcdataoff = make([]int64, nfuncdata)
+	pcln.Funcdataoff = pcln.Funcdataoff[:nfuncdata]
+
+	funcpctab(ctxt, &pcln.Pcsp, cursym, "pctospadj", pctospadj, nil)
+	funcpctab(ctxt, &pcln.Pcfile, cursym, "pctofile", pctofileline, pcln)
+	funcpctab(ctxt, &pcln.Pcline, cursym, "pctoline", pctofileline, nil)
+
+	// tabulate which pc and func data we have.
+	havepc := make([]uint32, (npcdata+31)/32)
+	havefunc := make([]uint32, (nfuncdata+31)/32)
+	for p := cursym.Text; p != nil; p = p.Link {
+		if p.As == AFUNCDATA {
+			if (havefunc[p.From.Offset/32]>>uint64(p.From.Offset%32))&1 != 0 {
+				ctxt.Diag("multiple definitions for FUNCDATA $%d", p.From.Offset)
+			}
+			havefunc[p.From.Offset/32] |= 1 << uint64(p.From.Offset%32)
+		}
+
+		if p.As == APCDATA && p.To.Offset != -1 {
+			havepc[p.From.Offset/32] |= 1 << uint64(p.From.Offset%32)
+		}
+	}
+
+	// pcdata.
+	for i := 0; i < npcdata; i++ {
+		if (havepc[i/32]>>uint(i%32))&1 == 0 {
+			continue
+		}
+		funcpctab(ctxt, &pcln.Pcdata[i], cursym, "pctopcdata", pctopcdata, interface{}(uint32(i)))
+	}
+
+	// funcdata
+	if nfuncdata > 0 {
+		var i int
+		for p := cursym.Text; p != nil; p = p.Link {
+			if p.As == AFUNCDATA {
+				i = int(p.From.Offset)
+				pcln.Funcdataoff[i] = p.To.Offset
+				if p.To.Type != TYPE_CONST {
+					// TODO: Dedup.
+					//funcdata_bytes += p->to.sym->size;
+					pcln.Funcdata[i] = p.To.Sym
+				}
+			}
+		}
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/plist.go b/vendor/github.com/google/gops/internal/obj/plist.go
new file mode 100644
index 00000000..804ea637
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/plist.go
@@ -0,0 +1,208 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+import (
+	"fmt"
+	"log"
+	"strings"
+)
+
+type Plist struct {
+	Firstpc *Prog
+}
+
+/*
+ * start a new Prog list.
+ */
+func Linknewplist(ctxt *Link) *Plist {
+	pl := new(Plist)
+	ctxt.Plists = append(ctxt.Plists, pl)
+	return pl
+}
+
+func Flushplist(ctxt *Link) {
+	flushplist(ctxt, ctxt.Debugasm == 0)
+}
+func FlushplistNoFree(ctxt *Link) {
+	flushplist(ctxt, false)
+}
+func flushplist(ctxt *Link, freeProgs bool) {
+	// Build list of symbols, and assign instructions to lists.
+	// Ignore ctxt->plist boundaries. There are no guarantees there,
+	// and the assemblers just use one big list.
+	var curtext *LSym
+	var etext *Prog
+	var text []*LSym
+
+	for _, pl := range ctxt.Plists {
+		var plink *Prog
+		for p := pl.Firstpc; p != nil; p = plink {
+			if ctxt.Debugasm != 0 && ctxt.Debugvlog != 0 {
+				fmt.Printf("obj: %v\n", p)
+			}
+			plink = p.Link
+			p.Link = nil
+
+			switch p.As {
+			case AEND:
+				continue
+
+			case ATYPE:
+				// Assume each TYPE instruction describes
+				// a different local variable or parameter,
+				// so no dedup.
+				// Using only the TYPE instructions means
+				// that we discard location information about local variables
+				// in C and assembly functions; that information is inferred
+				// from ordinary references, because there are no TYPE
+				// instructions there. Without the type information, gdb can't
+				// use the locations, so we don't bother to save them.
+				// If something else could use them, we could arrange to
+				// preserve them.
+				if curtext == nil {
+					continue
+				}
+				a := new(Auto)
+				a.Asym = p.From.Sym
+				a.Aoffset = int32(p.From.Offset)
+				a.Name = int16(p.From.Name)
+				a.Gotype = p.To.Sym
+				a.Link = curtext.Autom
+				curtext.Autom = a
+				continue
+
+			case ATEXT:
+				s := p.From.Sym
+				if s == nil {
+					// func _() { }
+					curtext = nil
+
+					continue
+				}
+
+				if s.Text != nil {
+					log.Fatalf("duplicate TEXT for %s", s.Name)
+				}
+				if s.OnList() {
+					log.Fatalf("symbol %s listed multiple times", s.Name)
+				}
+				s.Set(AttrOnList, true)
+				text = append(text, s)
+				flag := int(p.From3Offset())
+				if flag&DUPOK != 0 {
+					s.Set(AttrDuplicateOK, true)
+				}
+				if flag&NOSPLIT != 0 {
+					s.Set(AttrNoSplit, true)
+				}
+				if flag&REFLECTMETHOD != 0 {
+					s.Set(AttrReflectMethod, true)
+				}
+				s.Type = STEXT
+				s.Text = p
+				etext = p
+				curtext = s
+				continue
+
+			case AFUNCDATA:
+				// Rewrite reference to go_args_stackmap(SB) to the Go-provided declaration information.
+				if curtext == nil { // func _() {}
+					continue
+				}
+				if p.To.Sym.Name == "go_args_stackmap" {
+					if p.From.Type != TYPE_CONST || p.From.Offset != FUNCDATA_ArgsPointerMaps {
+						ctxt.Diag("FUNCDATA use of go_args_stackmap(SB) without FUNCDATA_ArgsPointerMaps")
+					}
+					p.To.Sym = Linklookup(ctxt, fmt.Sprintf("%s.args_stackmap", curtext.Name), int(curtext.Version))
+				}
+
+			}
+
+			if curtext == nil {
+				etext = nil
+				continue
+			}
+			etext.Link = p
+			etext = p
+		}
+	}
+
+	// Add reference to Go arguments for C or assembly functions without them.
+	for _, s := range text {
+		if !strings.HasPrefix(s.Name, "\"\".") {
+			continue
+		}
+		found := false
+		var p *Prog
+		for p = s.Text; p != nil; p = p.Link {
+			if p.As == AFUNCDATA && p.From.Type == TYPE_CONST && p.From.Offset == FUNCDATA_ArgsPointerMaps {
+				found = true
+				break
+			}
+		}
+
+		if !found {
+			p = Appendp(ctxt, s.Text)
+			p.As = AFUNCDATA
+			p.From.Type = TYPE_CONST
+			p.From.Offset = FUNCDATA_ArgsPointerMaps
+			p.To.Type = TYPE_MEM
+			p.To.Name = NAME_EXTERN
+			p.To.Sym = Linklookup(ctxt, fmt.Sprintf("%s.args_stackmap", s.Name), int(s.Version))
+		}
+	}
+
+	// Turn functions into machine code images.
+	for _, s := range text {
+		mkfwd(s)
+		linkpatch(ctxt, s)
+		if ctxt.Flag_optimize {
+			ctxt.Arch.Follow(ctxt, s)
+		}
+		ctxt.Arch.Preprocess(ctxt, s)
+		ctxt.Arch.Assemble(ctxt, s)
+		fieldtrack(ctxt, s)
+		linkpcln(ctxt, s)
+		if freeProgs {
+			s.Text = nil
+		}
+	}
+
+	// Add to running list in ctxt.
+	ctxt.Text = append(ctxt.Text, text...)
+	ctxt.Data = append(ctxt.Data, gendwarf(ctxt, text)...)
+	ctxt.Plists = nil
+	ctxt.Curp = nil
+	if freeProgs {
+		ctxt.freeProgs()
+	}
+}
+
+func (ctxt *Link) Globl(s *LSym, size int64, flag int) {
+	if s.SeenGlobl() {
+		fmt.Printf("duplicate %v\n", s)
+	}
+	s.Set(AttrSeenGlobl, true)
+	if s.OnList() {
+		log.Fatalf("symbol %s listed multiple times", s.Name)
+	}
+	s.Set(AttrOnList, true)
+	ctxt.Data = append(ctxt.Data, s)
+	s.Size = size
+	if s.Type == 0 || s.Type == SXREF {
+		s.Type = SBSS
+	}
+	if flag&DUPOK != 0 {
+		s.Set(AttrDuplicateOK, true)
+	}
+	if flag&RODATA != 0 {
+		s.Type = SRODATA
+	} else if flag&NOPTR != 0 {
+		s.Type = SNOPTRBSS
+	} else if flag&TLSBSS != 0 {
+		s.Type = STLSBSS
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/ppc64/a.out.go b/vendor/github.com/google/gops/internal/obj/ppc64/a.out.go
new file mode 100644
index 00000000..48d8ed15
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ppc64/a.out.go
@@ -0,0 +1,941 @@
+// cmd/9c/9.out.h from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package ppc64
+
+import "github.com/google/gops/internal/obj"
+
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p ppc64
+
+/*
+ * powerpc 64
+ */
+const (
+	NSNAME = 8
+	NSYM   = 50
+	NREG   = 32 /* number of general registers */
+	NFREG  = 32 /* number of floating point registers */
+)
+
+const (
+	/* RBasePPC64 = 4096 */
+	/* R0=4096 ... R31=4127 */
+	REG_R0 = obj.RBasePPC64 + iota
+	REG_R1
+	REG_R2
+	REG_R3
+	REG_R4
+	REG_R5
+	REG_R6
+	REG_R7
+	REG_R8
+	REG_R9
+	REG_R10
+	REG_R11
+	REG_R12
+	REG_R13
+	REG_R14
+	REG_R15
+	REG_R16
+	REG_R17
+	REG_R18
+	REG_R19
+	REG_R20
+	REG_R21
+	REG_R22
+	REG_R23
+	REG_R24
+	REG_R25
+	REG_R26
+	REG_R27
+	REG_R28
+	REG_R29
+	REG_R30
+	REG_R31
+
+	/* F0=4128 ... F31=4159 */
+	REG_F0
+	REG_F1
+	REG_F2
+	REG_F3
+	REG_F4
+	REG_F5
+	REG_F6
+	REG_F7
+	REG_F8
+	REG_F9
+	REG_F10
+	REG_F11
+	REG_F12
+	REG_F13
+	REG_F14
+	REG_F15
+	REG_F16
+	REG_F17
+	REG_F18
+	REG_F19
+	REG_F20
+	REG_F21
+	REG_F22
+	REG_F23
+	REG_F24
+	REG_F25
+	REG_F26
+	REG_F27
+	REG_F28
+	REG_F29
+	REG_F30
+	REG_F31
+
+	/* V0=4160 ... V31=4191 */
+	REG_V0
+	REG_V1
+	REG_V2
+	REG_V3
+	REG_V4
+	REG_V5
+	REG_V6
+	REG_V7
+	REG_V8
+	REG_V9
+	REG_V10
+	REG_V11
+	REG_V12
+	REG_V13
+	REG_V14
+	REG_V15
+	REG_V16
+	REG_V17
+	REG_V18
+	REG_V19
+	REG_V20
+	REG_V21
+	REG_V22
+	REG_V23
+	REG_V24
+	REG_V25
+	REG_V26
+	REG_V27
+	REG_V28
+	REG_V29
+	REG_V30
+	REG_V31
+
+	/* VS0=4192 ... VS63=4255 */
+	REG_VS0
+	REG_VS1
+	REG_VS2
+	REG_VS3
+	REG_VS4
+	REG_VS5
+	REG_VS6
+	REG_VS7
+	REG_VS8
+	REG_VS9
+	REG_VS10
+	REG_VS11
+	REG_VS12
+	REG_VS13
+	REG_VS14
+	REG_VS15
+	REG_VS16
+	REG_VS17
+	REG_VS18
+	REG_VS19
+	REG_VS20
+	REG_VS21
+	REG_VS22
+	REG_VS23
+	REG_VS24
+	REG_VS25
+	REG_VS26
+	REG_VS27
+	REG_VS28
+	REG_VS29
+	REG_VS30
+	REG_VS31
+	REG_VS32
+	REG_VS33
+	REG_VS34
+	REG_VS35
+	REG_VS36
+	REG_VS37
+	REG_VS38
+	REG_VS39
+	REG_VS40
+	REG_VS41
+	REG_VS42
+	REG_VS43
+	REG_VS44
+	REG_VS45
+	REG_VS46
+	REG_VS47
+	REG_VS48
+	REG_VS49
+	REG_VS50
+	REG_VS51
+	REG_VS52
+	REG_VS53
+	REG_VS54
+	REG_VS55
+	REG_VS56
+	REG_VS57
+	REG_VS58
+	REG_VS59
+	REG_VS60
+	REG_VS61
+	REG_VS62
+	REG_VS63
+
+	REG_CR0
+	REG_CR1
+	REG_CR2
+	REG_CR3
+	REG_CR4
+	REG_CR5
+	REG_CR6
+	REG_CR7
+
+	REG_MSR
+	REG_FPSCR
+	REG_CR
+
+	REG_SPECIAL = REG_CR0
+
+	REG_SPR0 = obj.RBasePPC64 + 1024 // first of 1024 registers
+	REG_DCR0 = obj.RBasePPC64 + 2048 // first of 1024 registers
+
+	REG_XER = REG_SPR0 + 1
+	REG_LR  = REG_SPR0 + 8
+	REG_CTR = REG_SPR0 + 9
+
+	REGZERO = REG_R0 /* set to zero */
+	REGSP   = REG_R1
+	REGSB   = REG_R2
+	REGRET  = REG_R3
+	REGARG  = -1      /* -1 disables passing the first argument in register */
+	REGRT1  = REG_R3  /* reserved for runtime, duffzero and duffcopy */
+	REGRT2  = REG_R4  /* reserved for runtime, duffcopy */
+	REGMIN  = REG_R7  /* register variables allocated from here to REGMAX */
+	REGCTXT = REG_R11 /* context for closures */
+	REGTLS  = REG_R13 /* C ABI TLS base pointer */
+	REGMAX  = REG_R27
+	REGEXT  = REG_R30 /* external registers allocated from here down */
+	REGG    = REG_R30 /* G */
+	REGTMP  = REG_R31 /* used by the linker */
+	FREGRET = REG_F0
+	FREGMIN = REG_F17 /* first register variable */
+	FREGMAX = REG_F26 /* last register variable for 9g only */
+	FREGEXT = REG_F26 /* first external register */
+)
+
+/*
+ * GENERAL:
+ *
+ * compiler allocates R3 up as temps
+ * compiler allocates register variables R7-R27
+ * compiler allocates external registers R30 down
+ *
+ * compiler allocates register variables F17-F26
+ * compiler allocates external registers F26 down
+ */
+const (
+	BIG = 32768 - 8
+)
+
+const (
+	/* mark flags */
+	LABEL   = 1 << 0
+	LEAF    = 1 << 1
+	FLOAT   = 1 << 2
+	BRANCH  = 1 << 3
+	LOAD    = 1 << 4
+	FCMP    = 1 << 5
+	SYNC    = 1 << 6
+	LIST    = 1 << 7
+	FOLL    = 1 << 8
+	NOSCHED = 1 << 9
+)
+
+// Values for use in branch instruction BC
+// BC B0,BI,label
+// BO is type of branch + likely bits described below
+// BI is CR value + branch type
+// ex: BEQ CR2,label is BC 12,10,label
+//   12 = BO_BCR
+//   10 = BI_CR2 + BI_EQ
+
+const (
+	BI_CR0 = 0
+	BI_CR1 = 4
+	BI_CR2 = 8
+	BI_CR3 = 12
+	BI_CR4 = 16
+	BI_CR5 = 20
+	BI_CR6 = 24
+	BI_CR7 = 28
+	BI_LT  = 0
+	BI_GT  = 1
+	BI_EQ  = 2
+	BI_OVF = 3
+)
+
+// Values for the BO field.  Add the branch type to
+// the likely bits, if a likely setting is known.
+// If branch likely or unlikely is not known, don't set it.
+// e.g. branch on cr+likely = 15
+
+const (
+	BO_BCTR     = 16 // branch on ctr value
+	BO_BCR      = 12 // branch on cr value
+	BO_BCRBCTR  = 8  // branch on ctr and cr value
+	BO_NOTBCR   = 4  // branch on not cr value
+	BO_UNLIKELY = 2  // value for unlikely
+	BO_LIKELY   = 3  // value for likely
+)
+
+// Bit settings from the CR
+
+const (
+	C_COND_LT = iota // 0 result is negative
+	C_COND_GT        // 1 result is positive
+	C_COND_EQ        // 2 result is zero
+	C_COND_SO        // 3 summary overflow or FP compare w/ NaN
+)
+
+const (
+	C_NONE = iota
+	C_REG
+	C_FREG
+	C_VREG
+	C_VSREG
+	C_CREG
+	C_SPR /* special processor register */
+	C_ZCON
+	C_SCON   /* 16 bit signed */
+	C_UCON   /* 32 bit signed, low 16 bits 0 */
+	C_ADDCON /* -0x8000 <= v < 0 */
+	C_ANDCON /* 0 < v <= 0xFFFF */
+	C_LCON   /* other 32 */
+	C_DCON   /* other 64 (could subdivide further) */
+	C_SACON  /* $n(REG) where n <= int16 */
+	C_SECON
+	C_LACON /* $n(REG) where int16 < n <= int32 */
+	C_LECON
+	C_DACON /* $n(REG) where int32 < n */
+	C_SBRA
+	C_LBRA
+	C_LBRAPIC
+	C_SAUTO
+	C_LAUTO
+	C_SEXT
+	C_LEXT
+	C_ZOREG // conjecture: either (1) register + zeroed offset, or (2) "R0" implies zero or C_REG
+	C_SOREG // register + signed offset
+	C_LOREG
+	C_FPSCR
+	C_MSR
+	C_XER
+	C_LR
+	C_CTR
+	C_ANY
+	C_GOK
+	C_ADDR
+	C_GOTADDR
+	C_TLS_LE
+	C_TLS_IE
+	C_TEXTSIZE
+
+	C_NCLASS /* must be the last */
+)
+
+const (
+	AADD = obj.ABasePPC64 + obj.A_ARCHSPECIFIC + iota
+	AADDCC
+	AADDV
+	AADDVCC
+	AADDC
+	AADDCCC
+	AADDCV
+	AADDCVCC
+	AADDME
+	AADDMECC
+	AADDMEVCC
+	AADDMEV
+	AADDE
+	AADDECC
+	AADDEVCC
+	AADDEV
+	AADDZE
+	AADDZECC
+	AADDZEVCC
+	AADDZEV
+	AAND
+	AANDCC
+	AANDN
+	AANDNCC
+	ABC
+	ABCL
+	ABEQ
+	ABGE // not LT = G/E/U
+	ABGT
+	ABLE // not GT = L/E/U
+	ABLT
+	ABNE // not EQ = L/G/U
+	ABVC // Unordered-clear
+	ABVS // Unordered-set
+	ACMP
+	ACMPU
+	ACNTLZW
+	ACNTLZWCC
+	ACRAND
+	ACRANDN
+	ACREQV
+	ACRNAND
+	ACRNOR
+	ACROR
+	ACRORN
+	ACRXOR
+	ADIVW
+	ADIVWCC
+	ADIVWVCC
+	ADIVWV
+	ADIVWU
+	ADIVWUCC
+	ADIVWUVCC
+	ADIVWUV
+	AEQV
+	AEQVCC
+	AEXTSB
+	AEXTSBCC
+	AEXTSH
+	AEXTSHCC
+	AFABS
+	AFABSCC
+	AFADD
+	AFADDCC
+	AFADDS
+	AFADDSCC
+	AFCMPO
+	AFCMPU
+	AFCTIW
+	AFCTIWCC
+	AFCTIWZ
+	AFCTIWZCC
+	AFDIV
+	AFDIVCC
+	AFDIVS
+	AFDIVSCC
+	AFMADD
+	AFMADDCC
+	AFMADDS
+	AFMADDSCC
+	AFMOVD
+	AFMOVDCC
+	AFMOVDU
+	AFMOVS
+	AFMOVSU
+	AFMOVSX
+	AFMOVSZ
+	AFMSUB
+	AFMSUBCC
+	AFMSUBS
+	AFMSUBSCC
+	AFMUL
+	AFMULCC
+	AFMULS
+	AFMULSCC
+	AFNABS
+	AFNABSCC
+	AFNEG
+	AFNEGCC
+	AFNMADD
+	AFNMADDCC
+	AFNMADDS
+	AFNMADDSCC
+	AFNMSUB
+	AFNMSUBCC
+	AFNMSUBS
+	AFNMSUBSCC
+	AFRSP
+	AFRSPCC
+	AFSUB
+	AFSUBCC
+	AFSUBS
+	AFSUBSCC
+	AISEL
+	AMOVMW
+	ALBAR
+	ALSW
+	ALWAR
+	ALWSYNC
+	AMOVDBR
+	AMOVWBR
+	AMOVB
+	AMOVBU
+	AMOVBZ
+	AMOVBZU
+	AMOVH
+	AMOVHBR
+	AMOVHU
+	AMOVHZ
+	AMOVHZU
+	AMOVW
+	AMOVWU
+	AMOVFL
+	AMOVCRFS
+	AMTFSB0
+	AMTFSB0CC
+	AMTFSB1
+	AMTFSB1CC
+	AMULHW
+	AMULHWCC
+	AMULHWU
+	AMULHWUCC
+	AMULLW
+	AMULLWCC
+	AMULLWVCC
+	AMULLWV
+	ANAND
+	ANANDCC
+	ANEG
+	ANEGCC
+	ANEGVCC
+	ANEGV
+	ANOR
+	ANORCC
+	AOR
+	AORCC
+	AORN
+	AORNCC
+	AREM
+	AREMCC
+	AREMV
+	AREMVCC
+	AREMU
+	AREMUCC
+	AREMUV
+	AREMUVCC
+	ARFI
+	ARLWMI
+	ARLWMICC
+	ARLWNM
+	ARLWNMCC
+	ASLW
+	ASLWCC
+	ASRW
+	ASRAW
+	ASRAWCC
+	ASRWCC
+	ASTBCCC
+	ASTSW
+	ASTWCCC
+	ASUB
+	ASUBCC
+	ASUBVCC
+	ASUBC
+	ASUBCCC
+	ASUBCV
+	ASUBCVCC
+	ASUBME
+	ASUBMECC
+	ASUBMEVCC
+	ASUBMEV
+	ASUBV
+	ASUBE
+	ASUBECC
+	ASUBEV
+	ASUBEVCC
+	ASUBZE
+	ASUBZECC
+	ASUBZEVCC
+	ASUBZEV
+	ASYNC
+	AXOR
+	AXORCC
+
+	ADCBF
+	ADCBI
+	ADCBST
+	ADCBT
+	ADCBTST
+	ADCBZ
+	AECIWX
+	AECOWX
+	AEIEIO
+	AICBI
+	AISYNC
+	APTESYNC
+	ATLBIE
+	ATLBIEL
+	ATLBSYNC
+	ATW
+
+	ASYSCALL
+	AWORD
+
+	ARFCI
+
+	/* optional on 32-bit */
+	AFRES
+	AFRESCC
+	AFRIM
+	AFRIMCC
+	AFRIP
+	AFRIPCC
+	AFRIZ
+	AFRIZCC
+	AFRSQRTE
+	AFRSQRTECC
+	AFSEL
+	AFSELCC
+	AFSQRT
+	AFSQRTCC
+	AFSQRTS
+	AFSQRTSCC
+
+	/* 64-bit */
+
+	ACNTLZD
+	ACNTLZDCC
+	ACMPW /* CMP with L=0 */
+	ACMPWU
+	ADIVD
+	ADIVDCC
+	ADIVDE
+	ADIVDECC
+	ADIVDEU
+	ADIVDEUCC
+	ADIVDVCC
+	ADIVDV
+	ADIVDU
+	ADIVDUCC
+	ADIVDUVCC
+	ADIVDUV
+	AEXTSW
+	AEXTSWCC
+	/* AFCFIW; AFCFIWCC */
+	AFCFID
+	AFCFIDCC
+	AFCFIDU
+	AFCFIDUCC
+	AFCTID
+	AFCTIDCC
+	AFCTIDZ
+	AFCTIDZCC
+	ALDAR
+	AMOVD
+	AMOVDU
+	AMOVWZ
+	AMOVWZU
+	AMULHD
+	AMULHDCC
+	AMULHDU
+	AMULHDUCC
+	AMULLD
+	AMULLDCC
+	AMULLDVCC
+	AMULLDV
+	ARFID
+	ARLDMI
+	ARLDMICC
+	ARLDIMI
+	ARLDIMICC
+	ARLDC
+	ARLDCCC
+	ARLDCR
+	ARLDCRCC
+	ARLDICR
+	ARLDICRCC
+	ARLDCL
+	ARLDCLCC
+	ARLDICL
+	ARLDICLCC
+	ASLBIA
+	ASLBIE
+	ASLBMFEE
+	ASLBMFEV
+	ASLBMTE
+	ASLD
+	ASLDCC
+	ASRD
+	ASRAD
+	ASRADCC
+	ASRDCC
+	ASTDCCC
+	ATD
+
+	/* 64-bit pseudo operation */
+	ADWORD
+	AREMD
+	AREMDCC
+	AREMDV
+	AREMDVCC
+	AREMDU
+	AREMDUCC
+	AREMDUV
+	AREMDUVCC
+
+	/* more 64-bit operations */
+	AHRFID
+
+	/* Vector */
+	ALV
+	ALVEBX
+	ALVEHX
+	ALVEWX
+	ALVX
+	ALVXL
+	ALVSL
+	ALVSR
+	ASTV
+	ASTVEBX
+	ASTVEHX
+	ASTVEWX
+	ASTVX
+	ASTVXL
+	AVAND
+	AVANDL
+	AVANDC
+	AVNAND
+	AVOR
+	AVORL
+	AVORC
+	AVNOR
+	AVXOR
+	AVEQV
+	AVADDUM
+	AVADDUBM
+	AVADDUHM
+	AVADDUWM
+	AVADDUDM
+	AVADDUQM
+	AVADDCU
+	AVADDCUQ
+	AVADDCUW
+	AVADDUS
+	AVADDUBS
+	AVADDUHS
+	AVADDUWS
+	AVADDSS
+	AVADDSBS
+	AVADDSHS
+	AVADDSWS
+	AVADDE
+	AVADDEUQM
+	AVADDECUQ
+	AVSUBUM
+	AVSUBUBM
+	AVSUBUHM
+	AVSUBUWM
+	AVSUBUDM
+	AVSUBUQM
+	AVSUBCU
+	AVSUBCUQ
+	AVSUBCUW
+	AVSUBUS
+	AVSUBUBS
+	AVSUBUHS
+	AVSUBUWS
+	AVSUBSS
+	AVSUBSBS
+	AVSUBSHS
+	AVSUBSWS
+	AVSUBE
+	AVSUBEUQM
+	AVSUBECUQ
+	AVR
+	AVRLB
+	AVRLH
+	AVRLW
+	AVRLD
+	AVS
+	AVSLB
+	AVSLH
+	AVSLW
+	AVSL
+	AVSLO
+	AVSRB
+	AVSRH
+	AVSRW
+	AVSR
+	AVSRO
+	AVSLD
+	AVSRD
+	AVSA
+	AVSRAB
+	AVSRAH
+	AVSRAW
+	AVSRAD
+	AVSOI
+	AVSLDOI
+	AVCLZ
+	AVCLZB
+	AVCLZH
+	AVCLZW
+	AVCLZD
+	AVPOPCNT
+	AVPOPCNTB
+	AVPOPCNTH
+	AVPOPCNTW
+	AVPOPCNTD
+	AVCMPEQ
+	AVCMPEQUB
+	AVCMPEQUBCC
+	AVCMPEQUH
+	AVCMPEQUHCC
+	AVCMPEQUW
+	AVCMPEQUWCC
+	AVCMPEQUD
+	AVCMPEQUDCC
+	AVCMPGT
+	AVCMPGTUB
+	AVCMPGTUBCC
+	AVCMPGTUH
+	AVCMPGTUHCC
+	AVCMPGTUW
+	AVCMPGTUWCC
+	AVCMPGTUD
+	AVCMPGTUDCC
+	AVCMPGTSB
+	AVCMPGTSBCC
+	AVCMPGTSH
+	AVCMPGTSHCC
+	AVCMPGTSW
+	AVCMPGTSWCC
+	AVCMPGTSD
+	AVCMPGTSDCC
+	AVPERM
+	AVSEL
+	AVSPLT
+	AVSPLTB
+	AVSPLTH
+	AVSPLTW
+	AVSPLTI
+	AVSPLTISB
+	AVSPLTISH
+	AVSPLTISW
+	AVCIPH
+	AVCIPHER
+	AVCIPHERLAST
+	AVNCIPH
+	AVNCIPHER
+	AVNCIPHERLAST
+	AVSBOX
+	AVSHASIGMA
+	AVSHASIGMAW
+	AVSHASIGMAD
+
+	/* VSX */
+	ALXV
+	ALXVD2X
+	ALXVDSX
+	ALXVW4X
+	ASTXV
+	ASTXVD2X
+	ASTXVW4X
+	ALXS
+	ALXSDX
+	ASTXS
+	ASTXSDX
+	ALXSI
+	ALXSIWAX
+	ALXSIWZX
+	ASTXSI
+	ASTXSIWX
+	AMFVSR
+	AMFVSRD
+	AMFVSRWZ
+	AMTVSR
+	AMTVSRD
+	AMTVSRWA
+	AMTVSRWZ
+	AXXLAND
+	AXXLANDQ
+	AXXLANDC
+	AXXLEQV
+	AXXLNAND
+	AXXLOR
+	AXXLORC
+	AXXLNOR
+	AXXLORQ
+	AXXLXOR
+	AXXSEL
+	AXXMRG
+	AXXMRGHW
+	AXXMRGLW
+	AXXSPLT
+	AXXSPLTW
+	AXXPERM
+	AXXPERMDI
+	AXXSI
+	AXXSLDWI
+	AXSCV
+	AXSCVDPSP
+	AXSCVSPDP
+	AXSCVDPSPN
+	AXSCVSPDPN
+	AXVCV
+	AXVCVDPSP
+	AXVCVSPDP
+	AXSCVX
+	AXSCVDPSXDS
+	AXSCVDPSXWS
+	AXSCVDPUXDS
+	AXSCVDPUXWS
+	AXSCVXP
+	AXSCVSXDDP
+	AXSCVUXDDP
+	AXSCVSXDSP
+	AXSCVUXDSP
+	AXVCVX
+	AXVCVDPSXDS
+	AXVCVDPSXWS
+	AXVCVDPUXDS
+	AXVCVDPUXWS
+	AXVCVSPSXDS
+	AXVCVSPSXWS
+	AXVCVSPUXDS
+	AXVCVSPUXWS
+	AXVCVXP
+	AXVCVSXDDP
+	AXVCVSXWDP
+	AXVCVUXDDP
+	AXVCVUXWDP
+	AXVCVSXDSP
+	AXVCVSXWSP
+	AXVCVUXDSP
+	AXVCVUXWSP
+
+	ALAST
+
+	// aliases
+	ABR = obj.AJMP
+	ABL = obj.ACALL
+)
diff --git a/vendor/github.com/google/gops/internal/obj/ppc64/anames.go b/vendor/github.com/google/gops/internal/obj/ppc64/anames.go
new file mode 100644
index 00000000..12aca66a
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ppc64/anames.go
@@ -0,0 +1,549 @@
+// Generated by stringer -i a.out.go -o anames.go -p ppc64
+// Do not edit.
+
+package ppc64
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "ADD",
+	"ADDCC",
+	"ADDV",
+	"ADDVCC",
+	"ADDC",
+	"ADDCCC",
+	"ADDCV",
+	"ADDCVCC",
+	"ADDME",
+	"ADDMECC",
+	"ADDMEVCC",
+	"ADDMEV",
+	"ADDE",
+	"ADDECC",
+	"ADDEVCC",
+	"ADDEV",
+	"ADDZE",
+	"ADDZECC",
+	"ADDZEVCC",
+	"ADDZEV",
+	"AND",
+	"ANDCC",
+	"ANDN",
+	"ANDNCC",
+	"BC",
+	"BCL",
+	"BEQ",
+	"BGE",
+	"BGT",
+	"BLE",
+	"BLT",
+	"BNE",
+	"BVC",
+	"BVS",
+	"CMP",
+	"CMPU",
+	"CNTLZW",
+	"CNTLZWCC",
+	"CRAND",
+	"CRANDN",
+	"CREQV",
+	"CRNAND",
+	"CRNOR",
+	"CROR",
+	"CRORN",
+	"CRXOR",
+	"DIVW",
+	"DIVWCC",
+	"DIVWVCC",
+	"DIVWV",
+	"DIVWU",
+	"DIVWUCC",
+	"DIVWUVCC",
+	"DIVWUV",
+	"EQV",
+	"EQVCC",
+	"EXTSB",
+	"EXTSBCC",
+	"EXTSH",
+	"EXTSHCC",
+	"FABS",
+	"FABSCC",
+	"FADD",
+	"FADDCC",
+	"FADDS",
+	"FADDSCC",
+	"FCMPO",
+	"FCMPU",
+	"FCTIW",
+	"FCTIWCC",
+	"FCTIWZ",
+	"FCTIWZCC",
+	"FDIV",
+	"FDIVCC",
+	"FDIVS",
+	"FDIVSCC",
+	"FMADD",
+	"FMADDCC",
+	"FMADDS",
+	"FMADDSCC",
+	"FMOVD",
+	"FMOVDCC",
+	"FMOVDU",
+	"FMOVS",
+	"FMOVSU",
+	"FMOVSX",
+	"FMOVSZ",
+	"FMSUB",
+	"FMSUBCC",
+	"FMSUBS",
+	"FMSUBSCC",
+	"FMUL",
+	"FMULCC",
+	"FMULS",
+	"FMULSCC",
+	"FNABS",
+	"FNABSCC",
+	"FNEG",
+	"FNEGCC",
+	"FNMADD",
+	"FNMADDCC",
+	"FNMADDS",
+	"FNMADDSCC",
+	"FNMSUB",
+	"FNMSUBCC",
+	"FNMSUBS",
+	"FNMSUBSCC",
+	"FRSP",
+	"FRSPCC",
+	"FSUB",
+	"FSUBCC",
+	"FSUBS",
+	"FSUBSCC",
+	"ISEL",
+	"MOVMW",
+	"LBAR",
+	"LSW",
+	"LWAR",
+	"LWSYNC",
+	"MOVDBR",
+	"MOVWBR",
+	"MOVB",
+	"MOVBU",
+	"MOVBZ",
+	"MOVBZU",
+	"MOVH",
+	"MOVHBR",
+	"MOVHU",
+	"MOVHZ",
+	"MOVHZU",
+	"MOVW",
+	"MOVWU",
+	"MOVFL",
+	"MOVCRFS",
+	"MTFSB0",
+	"MTFSB0CC",
+	"MTFSB1",
+	"MTFSB1CC",
+	"MULHW",
+	"MULHWCC",
+	"MULHWU",
+	"MULHWUCC",
+	"MULLW",
+	"MULLWCC",
+	"MULLWVCC",
+	"MULLWV",
+	"NAND",
+	"NANDCC",
+	"NEG",
+	"NEGCC",
+	"NEGVCC",
+	"NEGV",
+	"NOR",
+	"NORCC",
+	"OR",
+	"ORCC",
+	"ORN",
+	"ORNCC",
+	"REM",
+	"REMCC",
+	"REMV",
+	"REMVCC",
+	"REMU",
+	"REMUCC",
+	"REMUV",
+	"REMUVCC",
+	"RFI",
+	"RLWMI",
+	"RLWMICC",
+	"RLWNM",
+	"RLWNMCC",
+	"SLW",
+	"SLWCC",
+	"SRW",
+	"SRAW",
+	"SRAWCC",
+	"SRWCC",
+	"STBCCC",
+	"STSW",
+	"STWCCC",
+	"SUB",
+	"SUBCC",
+	"SUBVCC",
+	"SUBC",
+	"SUBCCC",
+	"SUBCV",
+	"SUBCVCC",
+	"SUBME",
+	"SUBMECC",
+	"SUBMEVCC",
+	"SUBMEV",
+	"SUBV",
+	"SUBE",
+	"SUBECC",
+	"SUBEV",
+	"SUBEVCC",
+	"SUBZE",
+	"SUBZECC",
+	"SUBZEVCC",
+	"SUBZEV",
+	"SYNC",
+	"XOR",
+	"XORCC",
+	"DCBF",
+	"DCBI",
+	"DCBST",
+	"DCBT",
+	"DCBTST",
+	"DCBZ",
+	"ECIWX",
+	"ECOWX",
+	"EIEIO",
+	"ICBI",
+	"ISYNC",
+	"PTESYNC",
+	"TLBIE",
+	"TLBIEL",
+	"TLBSYNC",
+	"TW",
+	"SYSCALL",
+	"WORD",
+	"RFCI",
+	"FRES",
+	"FRESCC",
+	"FRIM",
+	"FRIMCC",
+	"FRIP",
+	"FRIPCC",
+	"FRIZ",
+	"FRIZCC",
+	"FRSQRTE",
+	"FRSQRTECC",
+	"FSEL",
+	"FSELCC",
+	"FSQRT",
+	"FSQRTCC",
+	"FSQRTS",
+	"FSQRTSCC",
+	"CNTLZD",
+	"CNTLZDCC",
+	"CMPW",
+	"CMPWU",
+	"DIVD",
+	"DIVDCC",
+	"DIVDE",
+	"DIVDECC",
+	"DIVDEU",
+	"DIVDEUCC",
+	"DIVDVCC",
+	"DIVDV",
+	"DIVDU",
+	"DIVDUCC",
+	"DIVDUVCC",
+	"DIVDUV",
+	"EXTSW",
+	"EXTSWCC",
+	"FCFID",
+	"FCFIDCC",
+	"FCFIDU",
+	"FCFIDUCC",
+	"FCTID",
+	"FCTIDCC",
+	"FCTIDZ",
+	"FCTIDZCC",
+	"LDAR",
+	"MOVD",
+	"MOVDU",
+	"MOVWZ",
+	"MOVWZU",
+	"MULHD",
+	"MULHDCC",
+	"MULHDU",
+	"MULHDUCC",
+	"MULLD",
+	"MULLDCC",
+	"MULLDVCC",
+	"MULLDV",
+	"RFID",
+	"RLDMI",
+	"RLDMICC",
+	"RLDIMI",
+	"RLDIMICC",
+	"RLDC",
+	"RLDCCC",
+	"RLDCR",
+	"RLDCRCC",
+	"RLDICR",
+	"RLDICRCC",
+	"RLDCL",
+	"RLDCLCC",
+	"RLDICL",
+	"RLDICLCC",
+	"SLBIA",
+	"SLBIE",
+	"SLBMFEE",
+	"SLBMFEV",
+	"SLBMTE",
+	"SLD",
+	"SLDCC",
+	"SRD",
+	"SRAD",
+	"SRADCC",
+	"SRDCC",
+	"STDCCC",
+	"TD",
+	"DWORD",
+	"REMD",
+	"REMDCC",
+	"REMDV",
+	"REMDVCC",
+	"REMDU",
+	"REMDUCC",
+	"REMDUV",
+	"REMDUVCC",
+	"HRFID",
+	"LV",
+	"LVEBX",
+	"LVEHX",
+	"LVEWX",
+	"LVX",
+	"LVXL",
+	"LVSL",
+	"LVSR",
+	"STV",
+	"STVEBX",
+	"STVEHX",
+	"STVEWX",
+	"STVX",
+	"STVXL",
+	"VAND",
+	"VANDL",
+	"VANDC",
+	"VNAND",
+	"VOR",
+	"VORL",
+	"VORC",
+	"VNOR",
+	"VXOR",
+	"VEQV",
+	"VADDUM",
+	"VADDUBM",
+	"VADDUHM",
+	"VADDUWM",
+	"VADDUDM",
+	"VADDUQM",
+	"VADDCU",
+	"VADDCUQ",
+	"VADDCUW",
+	"VADDUS",
+	"VADDUBS",
+	"VADDUHS",
+	"VADDUWS",
+	"VADDSS",
+	"VADDSBS",
+	"VADDSHS",
+	"VADDSWS",
+	"VADDE",
+	"VADDEUQM",
+	"VADDECUQ",
+	"VSUBUM",
+	"VSUBUBM",
+	"VSUBUHM",
+	"VSUBUWM",
+	"VSUBUDM",
+	"VSUBUQM",
+	"VSUBCU",
+	"VSUBCUQ",
+	"VSUBCUW",
+	"VSUBUS",
+	"VSUBUBS",
+	"VSUBUHS",
+	"VSUBUWS",
+	"VSUBSS",
+	"VSUBSBS",
+	"VSUBSHS",
+	"VSUBSWS",
+	"VSUBE",
+	"VSUBEUQM",
+	"VSUBECUQ",
+	"VR",
+	"VRLB",
+	"VRLH",
+	"VRLW",
+	"VRLD",
+	"VS",
+	"VSLB",
+	"VSLH",
+	"VSLW",
+	"VSL",
+	"VSLO",
+	"VSRB",
+	"VSRH",
+	"VSRW",
+	"VSR",
+	"VSRO",
+	"VSLD",
+	"VSRD",
+	"VSA",
+	"VSRAB",
+	"VSRAH",
+	"VSRAW",
+	"VSRAD",
+	"VSOI",
+	"VSLDOI",
+	"VCLZ",
+	"VCLZB",
+	"VCLZH",
+	"VCLZW",
+	"VCLZD",
+	"VPOPCNT",
+	"VPOPCNTB",
+	"VPOPCNTH",
+	"VPOPCNTW",
+	"VPOPCNTD",
+	"VCMPEQ",
+	"VCMPEQUB",
+	"VCMPEQUBCC",
+	"VCMPEQUH",
+	"VCMPEQUHCC",
+	"VCMPEQUW",
+	"VCMPEQUWCC",
+	"VCMPEQUD",
+	"VCMPEQUDCC",
+	"VCMPGT",
+	"VCMPGTUB",
+	"VCMPGTUBCC",
+	"VCMPGTUH",
+	"VCMPGTUHCC",
+	"VCMPGTUW",
+	"VCMPGTUWCC",
+	"VCMPGTUD",
+	"VCMPGTUDCC",
+	"VCMPGTSB",
+	"VCMPGTSBCC",
+	"VCMPGTSH",
+	"VCMPGTSHCC",
+	"VCMPGTSW",
+	"VCMPGTSWCC",
+	"VCMPGTSD",
+	"VCMPGTSDCC",
+	"VPERM",
+	"VSEL",
+	"VSPLT",
+	"VSPLTB",
+	"VSPLTH",
+	"VSPLTW",
+	"VSPLTI",
+	"VSPLTISB",
+	"VSPLTISH",
+	"VSPLTISW",
+	"VCIPH",
+	"VCIPHER",
+	"VCIPHERLAST",
+	"VNCIPH",
+	"VNCIPHER",
+	"VNCIPHERLAST",
+	"VSBOX",
+	"VSHASIGMA",
+	"VSHASIGMAW",
+	"VSHASIGMAD",
+	"LXV",
+	"LXVD2X",
+	"LXVDSX",
+	"LXVW4X",
+	"STXV",
+	"STXVD2X",
+	"STXVW4X",
+	"LXS",
+	"LXSDX",
+	"STXS",
+	"STXSDX",
+	"LXSI",
+	"LXSIWAX",
+	"LXSIWZX",
+	"STXSI",
+	"STXSIWX",
+	"MFVSR",
+	"MFVSRD",
+	"MFVSRWZ",
+	"MTVSR",
+	"MTVSRD",
+	"MTVSRWA",
+	"MTVSRWZ",
+	"XXLAND",
+	"XXLANDQ",
+	"XXLANDC",
+	"XXLEQV",
+	"XXLNAND",
+	"XXLOR",
+	"XXLORC",
+	"XXLNOR",
+	"XXLORQ",
+	"XXLXOR",
+	"XXSEL",
+	"XXMRG",
+	"XXMRGHW",
+	"XXMRGLW",
+	"XXSPLT",
+	"XXSPLTW",
+	"XXPERM",
+	"XXPERMDI",
+	"XXSI",
+	"XXSLDWI",
+	"XSCV",
+	"XSCVDPSP",
+	"XSCVSPDP",
+	"XSCVDPSPN",
+	"XSCVSPDPN",
+	"XVCV",
+	"XVCVDPSP",
+	"XVCVSPDP",
+	"XSCVX",
+	"XSCVDPSXDS",
+	"XSCVDPSXWS",
+	"XSCVDPUXDS",
+	"XSCVDPUXWS",
+	"XSCVXP",
+	"XSCVSXDDP",
+	"XSCVUXDDP",
+	"XSCVSXDSP",
+	"XSCVUXDSP",
+	"XVCVX",
+	"XVCVDPSXDS",
+	"XVCVDPSXWS",
+	"XVCVDPUXDS",
+	"XVCVDPUXWS",
+	"XVCVSPSXDS",
+	"XVCVSPSXWS",
+	"XVCVSPUXDS",
+	"XVCVSPUXWS",
+	"XVCVXP",
+	"XVCVSXDDP",
+	"XVCVSXWDP",
+	"XVCVUXDDP",
+	"XVCVUXWDP",
+	"XVCVSXDSP",
+	"XVCVSXWSP",
+	"XVCVUXDSP",
+	"XVCVUXWSP",
+	"LAST",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/ppc64/anames9.go b/vendor/github.com/google/gops/internal/obj/ppc64/anames9.go
new file mode 100644
index 00000000..6ec7b7b5
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ppc64/anames9.go
@@ -0,0 +1,49 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ppc64
+
+var cnames9 = []string{
+	"NONE",
+	"REG",
+	"FREG",
+	"VREG",
+	"VSREG",
+	"CREG",
+	"SPR",
+	"ZCON",
+	"SCON",
+	"UCON",
+	"ADDCON",
+	"ANDCON",
+	"LCON",
+	"DCON",
+	"SACON",
+	"SECON",
+	"LACON",
+	"LECON",
+	"DACON",
+	"SBRA",
+	"LBRA",
+	"SAUTO",
+	"LAUTO",
+	"SEXT",
+	"LEXT",
+	"ZOREG",
+	"SOREG",
+	"LOREG",
+	"FPSCR",
+	"MSR",
+	"XER",
+	"LR",
+	"CTR",
+	"ANY",
+	"GOK",
+	"ADDR",
+	"GOTADDR",
+	"TLS_LE",
+	"TLS_IE",
+	"TEXTSIZE",
+	"NCLASS",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/ppc64/asm9.go b/vendor/github.com/google/gops/internal/obj/ppc64/asm9.go
new file mode 100644
index 00000000..31bdeb68
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ppc64/asm9.go
@@ -0,0 +1,4552 @@
+// cmd/9l/optab.c, cmd/9l/asmout.c from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package ppc64
+
+import (
+	"encoding/binary"
+	"fmt"
+	"log"
+	"sort"
+
+	"github.com/google/gops/internal/obj"
+)
+
+// Instruction layout.
+
+const (
+	funcAlign = 8
+)
+
+const (
+	r0iszero = 1
+)
+
+type Optab struct {
+	as    obj.As // Opcode
+	a1    uint8
+	a2    uint8
+	a3    uint8
+	a4    uint8
+	type_ int8 // cases in asmout below. E.g., 44 = st r,(ra+rb); 45 = ld (ra+rb), r
+	size  int8
+	param int16
+}
+
+var optab = []Optab{
+	{obj.ATEXT, C_LEXT, C_NONE, C_NONE, C_TEXTSIZE, 0, 0, 0},
+	{obj.ATEXT, C_LEXT, C_NONE, C_LCON, C_TEXTSIZE, 0, 0, 0},
+	{obj.ATEXT, C_ADDR, C_NONE, C_NONE, C_TEXTSIZE, 0, 0, 0},
+	{obj.ATEXT, C_ADDR, C_NONE, C_LCON, C_TEXTSIZE, 0, 0, 0},
+	/* move register */
+	{AMOVD, C_REG, C_NONE, C_NONE, C_REG, 1, 4, 0},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_REG, 12, 4, 0},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_REG, 13, 4, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_REG, 12, 4, 0},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_REG, 13, 4, 0},
+	{AADD, C_REG, C_REG, C_NONE, C_REG, 2, 4, 0},
+	{AADD, C_REG, C_NONE, C_NONE, C_REG, 2, 4, 0},
+	{AADD, C_ADDCON, C_REG, C_NONE, C_REG, 4, 4, 0},
+	{AADD, C_ADDCON, C_NONE, C_NONE, C_REG, 4, 4, 0},
+	{AADD, C_UCON, C_REG, C_NONE, C_REG, 20, 4, 0},
+	{AADD, C_UCON, C_NONE, C_NONE, C_REG, 20, 4, 0},
+	{AADD, C_LCON, C_REG, C_NONE, C_REG, 22, 12, 0},
+	{AADD, C_LCON, C_NONE, C_NONE, C_REG, 22, 12, 0},
+	{AADDC, C_REG, C_REG, C_NONE, C_REG, 2, 4, 0},
+	{AADDC, C_REG, C_NONE, C_NONE, C_REG, 2, 4, 0},
+	{AADDC, C_ADDCON, C_REG, C_NONE, C_REG, 4, 4, 0},
+	{AADDC, C_ADDCON, C_NONE, C_NONE, C_REG, 4, 4, 0},
+	{AADDC, C_LCON, C_REG, C_NONE, C_REG, 22, 12, 0},
+	{AADDC, C_LCON, C_NONE, C_NONE, C_REG, 22, 12, 0},
+	{AAND, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0}, /* logical, no literal */
+	{AAND, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{AANDCC, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0},
+	{AANDCC, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{AANDCC, C_ANDCON, C_NONE, C_NONE, C_REG, 58, 4, 0},
+	{AANDCC, C_ANDCON, C_REG, C_NONE, C_REG, 58, 4, 0},
+	{AANDCC, C_UCON, C_NONE, C_NONE, C_REG, 59, 4, 0},
+	{AANDCC, C_UCON, C_REG, C_NONE, C_REG, 59, 4, 0},
+	{AANDCC, C_LCON, C_NONE, C_NONE, C_REG, 23, 12, 0},
+	{AANDCC, C_LCON, C_REG, C_NONE, C_REG, 23, 12, 0},
+	{AMULLW, C_REG, C_REG, C_NONE, C_REG, 2, 4, 0},
+	{AMULLW, C_REG, C_NONE, C_NONE, C_REG, 2, 4, 0},
+	{AMULLW, C_ADDCON, C_REG, C_NONE, C_REG, 4, 4, 0},
+	{AMULLW, C_ADDCON, C_NONE, C_NONE, C_REG, 4, 4, 0},
+	{AMULLW, C_ANDCON, C_REG, C_NONE, C_REG, 4, 4, 0},
+	{AMULLW, C_ANDCON, C_NONE, C_NONE, C_REG, 4, 4, 0},
+	{AMULLW, C_LCON, C_REG, C_NONE, C_REG, 22, 12, 0},
+	{AMULLW, C_LCON, C_NONE, C_NONE, C_REG, 22, 12, 0},
+	{ASUBC, C_REG, C_REG, C_NONE, C_REG, 10, 4, 0},
+	{ASUBC, C_REG, C_NONE, C_NONE, C_REG, 10, 4, 0},
+	{ASUBC, C_REG, C_NONE, C_ADDCON, C_REG, 27, 4, 0},
+	{ASUBC, C_REG, C_NONE, C_LCON, C_REG, 28, 12, 0},
+	{AOR, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0}, /* logical, literal not cc (or/xor) */
+	{AOR, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{AOR, C_ANDCON, C_NONE, C_NONE, C_REG, 58, 4, 0},
+	{AOR, C_ANDCON, C_REG, C_NONE, C_REG, 58, 4, 0},
+	{AOR, C_UCON, C_NONE, C_NONE, C_REG, 59, 4, 0},
+	{AOR, C_UCON, C_REG, C_NONE, C_REG, 59, 4, 0},
+	{AOR, C_LCON, C_NONE, C_NONE, C_REG, 23, 12, 0},
+	{AOR, C_LCON, C_REG, C_NONE, C_REG, 23, 12, 0},
+	{ADIVW, C_REG, C_REG, C_NONE, C_REG, 2, 4, 0}, /* op r1[,r2],r3 */
+	{ADIVW, C_REG, C_NONE, C_NONE, C_REG, 2, 4, 0},
+	{ASUB, C_REG, C_REG, C_NONE, C_REG, 10, 4, 0}, /* op r2[,r1],r3 */
+	{ASUB, C_REG, C_NONE, C_NONE, C_REG, 10, 4, 0},
+	{ASLW, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{ASLW, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0},
+	{ASLD, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{ASLD, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0},
+	{ASLD, C_SCON, C_REG, C_NONE, C_REG, 25, 4, 0},
+	{ASLD, C_SCON, C_NONE, C_NONE, C_REG, 25, 4, 0},
+	{ASLW, C_SCON, C_REG, C_NONE, C_REG, 57, 4, 0},
+	{ASLW, C_SCON, C_NONE, C_NONE, C_REG, 57, 4, 0},
+	{ASRAW, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{ASRAW, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0},
+	{ASRAW, C_SCON, C_REG, C_NONE, C_REG, 56, 4, 0},
+	{ASRAW, C_SCON, C_NONE, C_NONE, C_REG, 56, 4, 0},
+	{ASRAD, C_REG, C_NONE, C_NONE, C_REG, 6, 4, 0},
+	{ASRAD, C_REG, C_REG, C_NONE, C_REG, 6, 4, 0},
+	{ASRAD, C_SCON, C_REG, C_NONE, C_REG, 56, 4, 0},
+	{ASRAD, C_SCON, C_NONE, C_NONE, C_REG, 56, 4, 0},
+	{ARLWMI, C_SCON, C_REG, C_LCON, C_REG, 62, 4, 0},
+	{ARLWMI, C_REG, C_REG, C_LCON, C_REG, 63, 4, 0},
+	{ARLDMI, C_SCON, C_REG, C_LCON, C_REG, 30, 4, 0},
+	{ARLDC, C_SCON, C_REG, C_LCON, C_REG, 29, 4, 0},
+	{ARLDCL, C_SCON, C_REG, C_LCON, C_REG, 29, 4, 0},
+	{ARLDCL, C_REG, C_REG, C_LCON, C_REG, 14, 4, 0},
+	{ARLDICL, C_REG, C_REG, C_LCON, C_REG, 14, 4, 0},
+	{ARLDICL, C_SCON, C_REG, C_LCON, C_REG, 14, 4, 0},
+	{ARLDCL, C_REG, C_NONE, C_LCON, C_REG, 14, 4, 0},
+	{AFADD, C_FREG, C_NONE, C_NONE, C_FREG, 2, 4, 0},
+	{AFADD, C_FREG, C_FREG, C_NONE, C_FREG, 2, 4, 0},
+	{AFABS, C_FREG, C_NONE, C_NONE, C_FREG, 33, 4, 0},
+	{AFABS, C_NONE, C_NONE, C_NONE, C_FREG, 33, 4, 0},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_FREG, 33, 4, 0},
+	{AFMADD, C_FREG, C_FREG, C_FREG, C_FREG, 34, 4, 0},
+	{AFMUL, C_FREG, C_NONE, C_NONE, C_FREG, 32, 4, 0},
+	{AFMUL, C_FREG, C_FREG, C_NONE, C_FREG, 32, 4, 0},
+
+	/* store, short offset */
+	{AMOVD, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVW, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVWZ, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVBZ, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVBZU, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVB, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVBU, C_REG, C_REG, C_NONE, C_ZOREG, 7, 4, REGZERO},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVBZU, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AMOVBU, C_REG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+
+	/* load, short offset */
+	{AMOVD, C_ZOREG, C_REG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVW, C_ZOREG, C_REG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVWZ, C_ZOREG, C_REG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVBZ, C_ZOREG, C_REG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVBZU, C_ZOREG, C_REG, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVB, C_ZOREG, C_REG, C_NONE, C_REG, 9, 8, REGZERO},
+	{AMOVBU, C_ZOREG, C_REG, C_NONE, C_REG, 9, 8, REGZERO},
+	{AMOVD, C_SEXT, C_NONE, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVW, C_SEXT, C_NONE, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVWZ, C_SEXT, C_NONE, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVBZ, C_SEXT, C_NONE, C_NONE, C_REG, 8, 4, REGSB},
+	{AMOVB, C_SEXT, C_NONE, C_NONE, C_REG, 9, 8, REGSB},
+	{AMOVD, C_SAUTO, C_NONE, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVW, C_SAUTO, C_NONE, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVWZ, C_SAUTO, C_NONE, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVBZ, C_SAUTO, C_NONE, C_NONE, C_REG, 8, 4, REGSP},
+	{AMOVB, C_SAUTO, C_NONE, C_NONE, C_REG, 9, 8, REGSP},
+	{AMOVD, C_SOREG, C_NONE, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVW, C_SOREG, C_NONE, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVWZ, C_SOREG, C_NONE, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVBZ, C_SOREG, C_NONE, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVBZU, C_SOREG, C_NONE, C_NONE, C_REG, 8, 4, REGZERO},
+	{AMOVB, C_SOREG, C_NONE, C_NONE, C_REG, 9, 8, REGZERO},
+	{AMOVBU, C_SOREG, C_NONE, C_NONE, C_REG, 9, 8, REGZERO},
+
+	/* store, long offset */
+	{AMOVD, C_REG, C_NONE, C_NONE, C_LEXT, 35, 8, REGSB},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_LEXT, 35, 8, REGSB},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_LEXT, 35, 8, REGSB},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_LEXT, 35, 8, REGSB},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_LEXT, 35, 8, REGSB},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_LAUTO, 35, 8, REGSP},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_LAUTO, 35, 8, REGSP},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_LAUTO, 35, 8, REGSP},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_LAUTO, 35, 8, REGSP},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_LAUTO, 35, 8, REGSP},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_LOREG, 35, 8, REGZERO},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_LOREG, 35, 8, REGZERO},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_LOREG, 35, 8, REGZERO},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_LOREG, 35, 8, REGZERO},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_LOREG, 35, 8, REGZERO},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_ADDR, 74, 8, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_ADDR, 74, 8, 0},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_ADDR, 74, 8, 0},
+	{AMOVBZ, C_REG, C_NONE, C_NONE, C_ADDR, 74, 8, 0},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_ADDR, 74, 8, 0},
+
+	/* load, long offset */
+	{AMOVD, C_LEXT, C_NONE, C_NONE, C_REG, 36, 8, REGSB},
+	{AMOVW, C_LEXT, C_NONE, C_NONE, C_REG, 36, 8, REGSB},
+	{AMOVWZ, C_LEXT, C_NONE, C_NONE, C_REG, 36, 8, REGSB},
+	{AMOVBZ, C_LEXT, C_NONE, C_NONE, C_REG, 36, 8, REGSB},
+	{AMOVB, C_LEXT, C_NONE, C_NONE, C_REG, 37, 12, REGSB},
+	{AMOVD, C_LAUTO, C_NONE, C_NONE, C_REG, 36, 8, REGSP},
+	{AMOVW, C_LAUTO, C_NONE, C_NONE, C_REG, 36, 8, REGSP},
+	{AMOVWZ, C_LAUTO, C_NONE, C_NONE, C_REG, 36, 8, REGSP},
+	{AMOVBZ, C_LAUTO, C_NONE, C_NONE, C_REG, 36, 8, REGSP},
+	{AMOVB, C_LAUTO, C_NONE, C_NONE, C_REG, 37, 12, REGSP},
+	{AMOVD, C_LOREG, C_NONE, C_NONE, C_REG, 36, 8, REGZERO},
+	{AMOVW, C_LOREG, C_NONE, C_NONE, C_REG, 36, 8, REGZERO},
+	{AMOVWZ, C_LOREG, C_NONE, C_NONE, C_REG, 36, 8, REGZERO},
+	{AMOVBZ, C_LOREG, C_NONE, C_NONE, C_REG, 36, 8, REGZERO},
+	{AMOVB, C_LOREG, C_NONE, C_NONE, C_REG, 37, 12, REGZERO},
+	{AMOVD, C_ADDR, C_NONE, C_NONE, C_REG, 75, 8, 0},
+	{AMOVW, C_ADDR, C_NONE, C_NONE, C_REG, 75, 8, 0},
+	{AMOVWZ, C_ADDR, C_NONE, C_NONE, C_REG, 75, 8, 0},
+	{AMOVBZ, C_ADDR, C_NONE, C_NONE, C_REG, 75, 8, 0},
+	{AMOVB, C_ADDR, C_NONE, C_NONE, C_REG, 76, 12, 0},
+
+	{AMOVD, C_TLS_LE, C_NONE, C_NONE, C_REG, 79, 4, 0},
+	{AMOVD, C_TLS_IE, C_NONE, C_NONE, C_REG, 80, 8, 0},
+
+	{AMOVD, C_GOTADDR, C_NONE, C_NONE, C_REG, 81, 8, 0},
+
+	/* load constant */
+	{AMOVD, C_SECON, C_NONE, C_NONE, C_REG, 3, 4, REGSB},
+	{AMOVD, C_SACON, C_NONE, C_NONE, C_REG, 3, 4, REGSP},
+	{AMOVD, C_LECON, C_NONE, C_NONE, C_REG, 26, 8, REGSB},
+	{AMOVD, C_LACON, C_NONE, C_NONE, C_REG, 26, 8, REGSP},
+	{AMOVD, C_ADDCON, C_NONE, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVW, C_SECON, C_NONE, C_NONE, C_REG, 3, 4, REGSB}, /* TO DO: check */
+	{AMOVW, C_SACON, C_NONE, C_NONE, C_REG, 3, 4, REGSP},
+	{AMOVW, C_LECON, C_NONE, C_NONE, C_REG, 26, 8, REGSB},
+	{AMOVW, C_LACON, C_NONE, C_NONE, C_REG, 26, 8, REGSP},
+	{AMOVW, C_ADDCON, C_NONE, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVWZ, C_SECON, C_NONE, C_NONE, C_REG, 3, 4, REGSB}, /* TO DO: check */
+	{AMOVWZ, C_SACON, C_NONE, C_NONE, C_REG, 3, 4, REGSP},
+	{AMOVWZ, C_LECON, C_NONE, C_NONE, C_REG, 26, 8, REGSB},
+	{AMOVWZ, C_LACON, C_NONE, C_NONE, C_REG, 26, 8, REGSP},
+	{AMOVWZ, C_ADDCON, C_NONE, C_NONE, C_REG, 3, 4, REGZERO},
+
+	/* load unsigned/long constants (TO DO: check) */
+	{AMOVD, C_UCON, C_NONE, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVD, C_LCON, C_NONE, C_NONE, C_REG, 19, 8, 0},
+	{AMOVW, C_UCON, C_NONE, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVW, C_LCON, C_NONE, C_NONE, C_REG, 19, 8, 0},
+	{AMOVWZ, C_UCON, C_NONE, C_NONE, C_REG, 3, 4, REGZERO},
+	{AMOVWZ, C_LCON, C_NONE, C_NONE, C_REG, 19, 8, 0},
+	{AMOVHBR, C_ZOREG, C_REG, C_NONE, C_REG, 45, 4, 0},
+	{AMOVHBR, C_ZOREG, C_NONE, C_NONE, C_REG, 45, 4, 0},
+	{AMOVHBR, C_REG, C_REG, C_NONE, C_ZOREG, 44, 4, 0},
+	{AMOVHBR, C_REG, C_NONE, C_NONE, C_ZOREG, 44, 4, 0},
+	{ASYSCALL, C_NONE, C_NONE, C_NONE, C_NONE, 5, 4, 0},
+	{ASYSCALL, C_REG, C_NONE, C_NONE, C_NONE, 77, 12, 0},
+	{ASYSCALL, C_SCON, C_NONE, C_NONE, C_NONE, 77, 12, 0},
+	{ABEQ, C_NONE, C_NONE, C_NONE, C_SBRA, 16, 4, 0},
+	{ABEQ, C_CREG, C_NONE, C_NONE, C_SBRA, 16, 4, 0},
+	{ABR, C_NONE, C_NONE, C_NONE, C_LBRA, 11, 4, 0},
+	{ABR, C_NONE, C_NONE, C_NONE, C_LBRAPIC, 11, 8, 0},
+	{ABC, C_SCON, C_REG, C_NONE, C_SBRA, 16, 4, 0},
+	{ABC, C_SCON, C_REG, C_NONE, C_LBRA, 17, 4, 0},
+	{ABR, C_NONE, C_NONE, C_NONE, C_LR, 18, 4, 0},
+	{ABR, C_NONE, C_NONE, C_NONE, C_CTR, 18, 4, 0},
+	{ABR, C_REG, C_NONE, C_NONE, C_CTR, 18, 4, 0},
+	{ABR, C_NONE, C_NONE, C_NONE, C_ZOREG, 15, 8, 0},
+	{ABC, C_NONE, C_REG, C_NONE, C_LR, 18, 4, 0},
+	{ABC, C_NONE, C_REG, C_NONE, C_CTR, 18, 4, 0},
+	{ABC, C_SCON, C_REG, C_NONE, C_LR, 18, 4, 0},
+	{ABC, C_SCON, C_REG, C_NONE, C_CTR, 18, 4, 0},
+	{ABC, C_NONE, C_NONE, C_NONE, C_ZOREG, 15, 8, 0},
+	{AFMOVD, C_SEXT, C_NONE, C_NONE, C_FREG, 8, 4, REGSB},
+	{AFMOVD, C_SAUTO, C_NONE, C_NONE, C_FREG, 8, 4, REGSP},
+	{AFMOVD, C_SOREG, C_NONE, C_NONE, C_FREG, 8, 4, REGZERO},
+	{AFMOVD, C_LEXT, C_NONE, C_NONE, C_FREG, 36, 8, REGSB},
+	{AFMOVD, C_LAUTO, C_NONE, C_NONE, C_FREG, 36, 8, REGSP},
+	{AFMOVD, C_LOREG, C_NONE, C_NONE, C_FREG, 36, 8, REGZERO},
+	{AFMOVD, C_ADDR, C_NONE, C_NONE, C_FREG, 75, 8, 0},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_SEXT, 7, 4, REGSB},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_SAUTO, 7, 4, REGSP},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_SOREG, 7, 4, REGZERO},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_LEXT, 35, 8, REGSB},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_LAUTO, 35, 8, REGSP},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_LOREG, 35, 8, REGZERO},
+	{AFMOVD, C_FREG, C_NONE, C_NONE, C_ADDR, 74, 8, 0},
+	{AFMOVSX, C_ZOREG, C_REG, C_NONE, C_FREG, 45, 4, 0},
+	{AFMOVSX, C_ZOREG, C_NONE, C_NONE, C_FREG, 45, 4, 0},
+	{AFMOVSX, C_FREG, C_REG, C_NONE, C_ZOREG, 44, 4, 0},
+	{AFMOVSX, C_FREG, C_NONE, C_NONE, C_ZOREG, 44, 4, 0},
+	{AFMOVSZ, C_ZOREG, C_REG, C_NONE, C_FREG, 45, 4, 0},
+	{AFMOVSZ, C_ZOREG, C_NONE, C_NONE, C_FREG, 45, 4, 0},
+	{ASYNC, C_NONE, C_NONE, C_NONE, C_NONE, 46, 4, 0},
+	{AWORD, C_LCON, C_NONE, C_NONE, C_NONE, 40, 4, 0},
+	{ADWORD, C_LCON, C_NONE, C_NONE, C_NONE, 31, 8, 0},
+	{ADWORD, C_DCON, C_NONE, C_NONE, C_NONE, 31, 8, 0},
+	{AADDME, C_REG, C_NONE, C_NONE, C_REG, 47, 4, 0},
+	{AEXTSB, C_REG, C_NONE, C_NONE, C_REG, 48, 4, 0},
+	{AEXTSB, C_NONE, C_NONE, C_NONE, C_REG, 48, 4, 0},
+	{AISEL, C_LCON, C_REG, C_REG, C_REG, 84, 4, 0},
+	{AISEL, C_ZCON, C_REG, C_REG, C_REG, 84, 4, 0},
+	{ANEG, C_REG, C_NONE, C_NONE, C_REG, 47, 4, 0},
+	{ANEG, C_NONE, C_NONE, C_NONE, C_REG, 47, 4, 0},
+	{AREM, C_REG, C_NONE, C_NONE, C_REG, 50, 12, 0},
+	{AREM, C_REG, C_REG, C_NONE, C_REG, 50, 12, 0},
+	{AREMU, C_REG, C_NONE, C_NONE, C_REG, 50, 16, 0},
+	{AREMU, C_REG, C_REG, C_NONE, C_REG, 50, 16, 0},
+	{AREMD, C_REG, C_NONE, C_NONE, C_REG, 51, 12, 0},
+	{AREMD, C_REG, C_REG, C_NONE, C_REG, 51, 12, 0},
+	{AREMDU, C_REG, C_NONE, C_NONE, C_REG, 51, 12, 0},
+	{AREMDU, C_REG, C_REG, C_NONE, C_REG, 51, 12, 0},
+	{AMTFSB0, C_SCON, C_NONE, C_NONE, C_NONE, 52, 4, 0},
+	{AMOVFL, C_FPSCR, C_NONE, C_NONE, C_FREG, 53, 4, 0},
+	{AMOVFL, C_FREG, C_NONE, C_NONE, C_FPSCR, 64, 4, 0},
+	{AMOVFL, C_FREG, C_NONE, C_LCON, C_FPSCR, 64, 4, 0},
+	{AMOVFL, C_LCON, C_NONE, C_NONE, C_FPSCR, 65, 4, 0},
+	{AMOVD, C_MSR, C_NONE, C_NONE, C_REG, 54, 4, 0},  /* mfmsr */
+	{AMOVD, C_REG, C_NONE, C_NONE, C_MSR, 54, 4, 0},  /* mtmsrd */
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_MSR, 54, 4, 0}, /* mtmsr */
+
+	/* Vector instructions */
+
+	/* Vector load */
+	{ALV, C_SOREG, C_NONE, C_NONE, C_VREG, 45, 4, 0}, /* vector load, x-form */
+
+	/* Vector store */
+	{ASTV, C_VREG, C_NONE, C_NONE, C_SOREG, 44, 4, 0}, /* vector store, x-form */
+
+	/* Vector logical */
+	{AVAND, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector and, vx-form */
+	{AVOR, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0},  /* vector or, vx-form */
+
+	/* Vector add */
+	{AVADDUM, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector add unsigned modulo, vx-form */
+	{AVADDCU, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector add & write carry unsigned, vx-form */
+	{AVADDUS, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector add unsigned saturate, vx-form */
+	{AVADDSS, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector add signed saturate, vx-form */
+	{AVADDE, C_VREG, C_VREG, C_VREG, C_VREG, 83, 4, 0},  /* vector add extended, va-form */
+
+	/* Vector subtract */
+	{AVSUBUM, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector subtract unsigned modulo, vx-form */
+	{AVSUBCU, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector subtract & write carry unsigned, vx-form */
+	{AVSUBUS, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector subtract unsigned saturate, vx-form */
+	{AVSUBSS, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector subtract signed saturate, vx-form */
+	{AVSUBE, C_VREG, C_VREG, C_VREG, C_VREG, 83, 4, 0},  /* vector subtract extended, va-form */
+
+	/* Vector rotate */
+	{AVR, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector rotate, vx-form */
+
+	/* Vector shift */
+	{AVS, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0},     /* vector shift, vx-form */
+	{AVSA, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0},    /* vector shift algebraic, vx-form */
+	{AVSOI, C_ANDCON, C_VREG, C_VREG, C_VREG, 83, 4, 0}, /* vector shift by octet immediate, va-form */
+
+	/* Vector count */
+	{AVCLZ, C_VREG, C_NONE, C_NONE, C_VREG, 85, 4, 0},    /* vector count leading zeros, vx-form */
+	{AVPOPCNT, C_VREG, C_NONE, C_NONE, C_VREG, 85, 4, 0}, /* vector population count, vx-form */
+
+	/* Vector compare */
+	{AVCMPEQ, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector compare equal, vc-form */
+	{AVCMPGT, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector compare greater than, vc-form */
+
+	/* Vector permute */
+	{AVPERM, C_VREG, C_VREG, C_VREG, C_VREG, 83, 4, 0}, /* vector permute, va-form */
+
+	/* Vector select */
+	{AVSEL, C_VREG, C_VREG, C_VREG, C_VREG, 83, 4, 0}, /* vector select, va-form */
+
+	/* Vector splat */
+	{AVSPLT, C_SCON, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector splat, vx-form */
+	{AVSPLT, C_ADDCON, C_VREG, C_NONE, C_VREG, 82, 4, 0},
+	{AVSPLTI, C_SCON, C_NONE, C_NONE, C_VREG, 82, 4, 0}, /* vector splat immediate, vx-form */
+	{AVSPLTI, C_ADDCON, C_NONE, C_NONE, C_VREG, 82, 4, 0},
+
+	/* Vector AES */
+	{AVCIPH, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0},  /* vector AES cipher, vx-form */
+	{AVNCIPH, C_VREG, C_VREG, C_NONE, C_VREG, 82, 4, 0}, /* vector AES inverse cipher, vx-form */
+	{AVSBOX, C_VREG, C_NONE, C_NONE, C_VREG, 82, 4, 0},  /* vector AES subbytes, vx-form */
+
+	/* Vector SHA */
+	{AVSHASIGMA, C_ANDCON, C_VREG, C_ANDCON, C_VREG, 82, 4, 0}, /* vector SHA sigma, vx-form */
+
+	/* VSX vector load */
+	{ALXV, C_SOREG, C_NONE, C_NONE, C_VSREG, 87, 4, 0}, /* vsx vector load, xx1-form */
+
+	/* VSX vector store */
+	{ASTXV, C_VSREG, C_NONE, C_NONE, C_SOREG, 86, 4, 0}, /* vsx vector store, xx1-form */
+
+	/* VSX scalar load */
+	{ALXS, C_SOREG, C_NONE, C_NONE, C_VSREG, 87, 4, 0}, /* vsx scalar load, xx1-form */
+
+	/* VSX scalar store */
+	{ASTXS, C_VSREG, C_NONE, C_NONE, C_SOREG, 86, 4, 0}, /* vsx scalar store, xx1-form */
+
+	/* VSX scalar as integer load */
+	{ALXSI, C_SOREG, C_NONE, C_NONE, C_VSREG, 87, 4, 0}, /* vsx scalar as integer load, xx1-form */
+
+	/* VSX scalar store as integer */
+	{ASTXSI, C_VSREG, C_NONE, C_NONE, C_SOREG, 86, 4, 0}, /* vsx scalar as integer store, xx1-form */
+
+	/* VSX move from VSR */
+	{AMFVSR, C_VSREG, C_NONE, C_NONE, C_REG, 88, 4, 0}, /* vsx move from vsr, xx1-form */
+
+	/* VSX move to VSR */
+	{AMTVSR, C_REG, C_NONE, C_NONE, C_VSREG, 88, 4, 0}, /* vsx move to vsr, xx1-form */
+
+	/* VSX logical */
+	{AXXLAND, C_VSREG, C_VSREG, C_NONE, C_VSREG, 90, 4, 0}, /* vsx and, xx3-form */
+	{AXXLOR, C_VSREG, C_VSREG, C_NONE, C_VSREG, 90, 4, 0},  /* vsx or, xx3-form */
+
+	/* VSX select */
+	{AXXSEL, C_VSREG, C_VSREG, C_VSREG, C_VSREG, 91, 4, 0}, /* vsx select, xx4-form */
+
+	/* VSX merge */
+	{AXXMRG, C_VSREG, C_VSREG, C_NONE, C_VSREG, 90, 4, 0}, /* vsx merge, xx3-form */
+
+	/* VSX splat */
+	{AXXSPLT, C_VSREG, C_NONE, C_SCON, C_VSREG, 89, 4, 0}, /* vsx splat, xx2-form */
+
+	/* VSX permute */
+	{AXXPERM, C_VSREG, C_VSREG, C_SCON, C_VSREG, 90, 4, 0}, /* vsx permute, xx3-form */
+
+	/* VSX shift */
+	{AXXSI, C_VSREG, C_VSREG, C_SCON, C_VSREG, 90, 4, 0}, /* vsx shift immediate, xx3-form */
+
+	/* VSX scalar FP-FP conversion */
+	{AXSCV, C_VSREG, C_NONE, C_NONE, C_VSREG, 89, 4, 0}, /* vsx scalar fp-fp conversion, xx2-form */
+
+	/* VSX vector FP-FP conversion */
+	{AXVCV, C_VSREG, C_NONE, C_NONE, C_VSREG, 89, 4, 0}, /* vsx vector fp-fp conversion, xx2-form */
+
+	/* VSX scalar FP-integer conversion */
+	{AXSCVX, C_VSREG, C_NONE, C_NONE, C_VSREG, 89, 4, 0}, /* vsx scalar fp-integer conversion, xx2-form */
+
+	/* VSX scalar integer-FP conversion */
+	{AXSCVXP, C_VSREG, C_NONE, C_NONE, C_VSREG, 89, 4, 0}, /* vsx scalar integer-fp conversion, xx2-form */
+
+	/* VSX vector FP-integer conversion */
+	{AXVCVX, C_VSREG, C_NONE, C_NONE, C_VSREG, 89, 4, 0}, /* vsx vector fp-integer conversion, xx2-form */
+
+	/* VSX vector integer-FP conversion */
+	{AXVCVXP, C_VSREG, C_NONE, C_NONE, C_VSREG, 89, 4, 0}, /* vsx vector integer-fp conversion, xx2-form */
+
+	/* 64-bit special registers */
+	{AMOVD, C_REG, C_NONE, C_NONE, C_SPR, 66, 4, 0},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_LR, 66, 4, 0},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_CTR, 66, 4, 0},
+	{AMOVD, C_REG, C_NONE, C_NONE, C_XER, 66, 4, 0},
+	{AMOVD, C_SPR, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVD, C_LR, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVD, C_CTR, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVD, C_XER, C_NONE, C_NONE, C_REG, 66, 4, 0},
+
+	/* 32-bit special registers (gloss over sign-extension or not?) */
+	{AMOVW, C_REG, C_NONE, C_NONE, C_SPR, 66, 4, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_CTR, 66, 4, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_XER, 66, 4, 0},
+	{AMOVW, C_SPR, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVW, C_XER, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_SPR, 66, 4, 0},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_CTR, 66, 4, 0},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_XER, 66, 4, 0},
+	{AMOVWZ, C_SPR, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVWZ, C_XER, C_NONE, C_NONE, C_REG, 66, 4, 0},
+	{AMOVFL, C_FPSCR, C_NONE, C_NONE, C_CREG, 73, 4, 0},
+	{AMOVFL, C_CREG, C_NONE, C_NONE, C_CREG, 67, 4, 0},
+	{AMOVW, C_CREG, C_NONE, C_NONE, C_REG, 68, 4, 0},
+	{AMOVWZ, C_CREG, C_NONE, C_NONE, C_REG, 68, 4, 0},
+	{AMOVFL, C_REG, C_NONE, C_LCON, C_CREG, 69, 4, 0},
+	{AMOVFL, C_REG, C_NONE, C_NONE, C_CREG, 69, 4, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_CREG, 69, 4, 0},
+	{AMOVWZ, C_REG, C_NONE, C_NONE, C_CREG, 69, 4, 0},
+	{ACMP, C_REG, C_NONE, C_NONE, C_REG, 70, 4, 0},
+	{ACMP, C_REG, C_REG, C_NONE, C_REG, 70, 4, 0},
+	{ACMP, C_REG, C_NONE, C_NONE, C_ADDCON, 71, 4, 0},
+	{ACMP, C_REG, C_REG, C_NONE, C_ADDCON, 71, 4, 0},
+	{ACMPU, C_REG, C_NONE, C_NONE, C_REG, 70, 4, 0},
+	{ACMPU, C_REG, C_REG, C_NONE, C_REG, 70, 4, 0},
+	{ACMPU, C_REG, C_NONE, C_NONE, C_ANDCON, 71, 4, 0},
+	{ACMPU, C_REG, C_REG, C_NONE, C_ANDCON, 71, 4, 0},
+	{AFCMPO, C_FREG, C_NONE, C_NONE, C_FREG, 70, 4, 0},
+	{AFCMPO, C_FREG, C_REG, C_NONE, C_FREG, 70, 4, 0},
+	{ATW, C_LCON, C_REG, C_NONE, C_REG, 60, 4, 0},
+	{ATW, C_LCON, C_REG, C_NONE, C_ADDCON, 61, 4, 0},
+	{ADCBF, C_ZOREG, C_NONE, C_NONE, C_NONE, 43, 4, 0},
+	{ADCBF, C_ZOREG, C_REG, C_NONE, C_NONE, 43, 4, 0},
+	{AECOWX, C_REG, C_REG, C_NONE, C_ZOREG, 44, 4, 0},
+	{AECIWX, C_ZOREG, C_REG, C_NONE, C_REG, 45, 4, 0},
+	{AECOWX, C_REG, C_NONE, C_NONE, C_ZOREG, 44, 4, 0},
+	{AECIWX, C_ZOREG, C_NONE, C_NONE, C_REG, 45, 4, 0},
+	{AEIEIO, C_NONE, C_NONE, C_NONE, C_NONE, 46, 4, 0},
+	{ATLBIE, C_REG, C_NONE, C_NONE, C_NONE, 49, 4, 0},
+	{ATLBIE, C_SCON, C_NONE, C_NONE, C_REG, 49, 4, 0},
+	{ASLBMFEE, C_REG, C_NONE, C_NONE, C_REG, 55, 4, 0},
+	{ASLBMTE, C_REG, C_NONE, C_NONE, C_REG, 55, 4, 0},
+	{ASTSW, C_REG, C_NONE, C_NONE, C_ZOREG, 44, 4, 0},
+	{ASTSW, C_REG, C_NONE, C_LCON, C_ZOREG, 41, 4, 0},
+	{ALSW, C_ZOREG, C_NONE, C_NONE, C_REG, 45, 4, 0},
+	{ALSW, C_ZOREG, C_NONE, C_LCON, C_REG, 42, 4, 0},
+	{obj.AUNDEF, C_NONE, C_NONE, C_NONE, C_NONE, 78, 4, 0},
+	{obj.AUSEFIELD, C_ADDR, C_NONE, C_NONE, C_NONE, 0, 0, 0},
+	{obj.APCDATA, C_LCON, C_NONE, C_NONE, C_LCON, 0, 0, 0},
+	{obj.AFUNCDATA, C_SCON, C_NONE, C_NONE, C_ADDR, 0, 0, 0},
+	{obj.ANOP, C_NONE, C_NONE, C_NONE, C_NONE, 0, 0, 0},
+	{obj.ADUFFZERO, C_NONE, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as ABR/ABL
+	{obj.ADUFFCOPY, C_NONE, C_NONE, C_NONE, C_LBRA, 11, 4, 0}, // same as ABR/ABL
+
+	{obj.AXXX, C_NONE, C_NONE, C_NONE, C_NONE, 0, 4, 0},
+}
+
+var oprange [ALAST & obj.AMask][]Optab
+
+var xcmp [C_NCLASS][C_NCLASS]bool
+
+func span9(ctxt *obj.Link, cursym *obj.LSym) {
+	p := cursym.Text
+	if p == nil || p.Link == nil { // handle external functions and ELF section symbols
+		return
+	}
+	ctxt.Cursym = cursym
+	ctxt.Autosize = int32(p.To.Offset)
+
+	if oprange[AANDN&obj.AMask] == nil {
+		buildop(ctxt)
+	}
+
+	c := int64(0)
+	p.Pc = c
+
+	var m int
+	var o *Optab
+	for p = p.Link; p != nil; p = p.Link {
+		ctxt.Curp = p
+		p.Pc = c
+		o = oplook(ctxt, p)
+		m = int(o.size)
+		if m == 0 {
+			if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
+				ctxt.Diag("zero-width instruction\n%v", p)
+			}
+			continue
+		}
+
+		c += int64(m)
+	}
+
+	cursym.Size = c
+
+	/*
+	 * if any procedure is large enough to
+	 * generate a large SBRA branch, then
+	 * generate extra passes putting branches
+	 * around jmps to fix. this is rare.
+	 */
+	bflag := 1
+
+	var otxt int64
+	var q *obj.Prog
+	for bflag != 0 {
+		if ctxt.Debugvlog != 0 {
+			ctxt.Logf("%5.2f span1\n", obj.Cputime())
+		}
+		bflag = 0
+		c = 0
+		for p = cursym.Text.Link; p != nil; p = p.Link {
+			p.Pc = c
+			o = oplook(ctxt, p)
+
+			// very large conditional branches
+			if (o.type_ == 16 || o.type_ == 17) && p.Pcond != nil {
+				otxt = p.Pcond.Pc - c
+				if otxt < -(1<<15)+10 || otxt >= (1<<15)-10 {
+					q = ctxt.NewProg()
+					q.Link = p.Link
+					p.Link = q
+					q.As = ABR
+					q.To.Type = obj.TYPE_BRANCH
+					q.Pcond = p.Pcond
+					p.Pcond = q
+					q = ctxt.NewProg()
+					q.Link = p.Link
+					p.Link = q
+					q.As = ABR
+					q.To.Type = obj.TYPE_BRANCH
+					q.Pcond = q.Link.Link
+
+					//addnop(p->link);
+					//addnop(p);
+					bflag = 1
+				}
+			}
+
+			m = int(o.size)
+			if m == 0 {
+				if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD {
+					ctxt.Diag("zero-width instruction\n%v", p)
+				}
+				continue
+			}
+
+			c += int64(m)
+		}
+
+		cursym.Size = c
+	}
+
+	c += -c & (funcAlign - 1)
+	cursym.Size = c
+
+	/*
+	 * lay out the code, emitting code and data relocations.
+	 */
+
+	cursym.Grow(cursym.Size)
+
+	bp := cursym.P
+	var i int32
+	var out [6]uint32
+	for p := cursym.Text.Link; p != nil; p = p.Link {
+		ctxt.Pc = p.Pc
+		ctxt.Curp = p
+		o = oplook(ctxt, p)
+		if int(o.size) > 4*len(out) {
+			log.Fatalf("out array in span9 is too small, need at least %d for %v", o.size/4, p)
+		}
+		asmout(ctxt, p, o, out[:])
+		for i = 0; i < int32(o.size/4); i++ {
+			ctxt.Arch.ByteOrder.PutUint32(bp, out[i])
+			bp = bp[4:]
+		}
+	}
+}
+
+func isint32(v int64) bool {
+	return int64(int32(v)) == v
+}
+
+func isuint32(v uint64) bool {
+	return uint64(uint32(v)) == v
+}
+
+func aclass(ctxt *obj.Link, a *obj.Addr) int {
+	switch a.Type {
+	case obj.TYPE_NONE:
+		return C_NONE
+
+	case obj.TYPE_REG:
+		if REG_R0 <= a.Reg && a.Reg <= REG_R31 {
+			return C_REG
+		}
+		if REG_F0 <= a.Reg && a.Reg <= REG_F31 {
+			return C_FREG
+		}
+		if REG_V0 <= a.Reg && a.Reg <= REG_V31 {
+			return C_VREG
+		}
+		if REG_VS0 <= a.Reg && a.Reg <= REG_VS63 {
+			return C_VSREG
+		}
+		if REG_CR0 <= a.Reg && a.Reg <= REG_CR7 || a.Reg == REG_CR {
+			return C_CREG
+		}
+		if REG_SPR0 <= a.Reg && a.Reg <= REG_SPR0+1023 {
+			switch a.Reg {
+			case REG_LR:
+				return C_LR
+
+			case REG_XER:
+				return C_XER
+
+			case REG_CTR:
+				return C_CTR
+			}
+
+			return C_SPR
+		}
+
+		if REG_DCR0 <= a.Reg && a.Reg <= REG_DCR0+1023 {
+			return C_SPR
+		}
+		if a.Reg == REG_FPSCR {
+			return C_FPSCR
+		}
+		if a.Reg == REG_MSR {
+			return C_MSR
+		}
+		return C_GOK
+
+	case obj.TYPE_MEM:
+		switch a.Name {
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			if a.Sym == nil {
+				break
+			}
+			ctxt.Instoffset = a.Offset
+			if a.Sym != nil { // use relocation
+				if a.Sym.Type == obj.STLSBSS {
+					if ctxt.Flag_shared {
+						return C_TLS_IE
+					} else {
+						return C_TLS_LE
+					}
+				}
+				return C_ADDR
+			}
+			return C_LEXT
+
+		case obj.NAME_GOTREF:
+			return C_GOTADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SAUTO
+			}
+			return C_LAUTO
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + ctxt.FixedFrameSize()
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SAUTO
+			}
+			return C_LAUTO
+
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if ctxt.Instoffset == 0 {
+				return C_ZOREG
+			}
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SOREG
+			}
+			return C_LOREG
+		}
+
+		return C_GOK
+
+	case obj.TYPE_TEXTSIZE:
+		return C_TEXTSIZE
+
+	case obj.TYPE_CONST,
+		obj.TYPE_ADDR:
+		switch a.Name {
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if a.Reg != 0 {
+				if -BIG <= ctxt.Instoffset && ctxt.Instoffset <= BIG {
+					return C_SACON
+				}
+				if isint32(ctxt.Instoffset) {
+					return C_LACON
+				}
+				return C_DACON
+			}
+
+			goto consize
+
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			s := a.Sym
+			if s == nil {
+				break
+			}
+			if s.Type == obj.SCONST {
+				ctxt.Instoffset = a.Offset
+				goto consize
+			}
+
+			ctxt.Instoffset = a.Offset
+
+			/* not sure why this barfs */
+			return C_LCON
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SACON
+			}
+			return C_LACON
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + ctxt.FixedFrameSize()
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SACON
+			}
+			return C_LACON
+		}
+
+		return C_GOK
+
+	consize:
+		if ctxt.Instoffset >= 0 {
+			if ctxt.Instoffset == 0 {
+				return C_ZCON
+			}
+			if ctxt.Instoffset <= 0x7fff {
+				return C_SCON
+			}
+			if ctxt.Instoffset <= 0xffff {
+				return C_ANDCON
+			}
+			if ctxt.Instoffset&0xffff == 0 && isuint32(uint64(ctxt.Instoffset)) { /* && (instoffset & (1<<31)) == 0) */
+				return C_UCON
+			}
+			if isint32(ctxt.Instoffset) || isuint32(uint64(ctxt.Instoffset)) {
+				return C_LCON
+			}
+			return C_DCON
+		}
+
+		if ctxt.Instoffset >= -0x8000 {
+			return C_ADDCON
+		}
+		if ctxt.Instoffset&0xffff == 0 && isint32(ctxt.Instoffset) {
+			return C_UCON
+		}
+		if isint32(ctxt.Instoffset) {
+			return C_LCON
+		}
+		return C_DCON
+
+	case obj.TYPE_BRANCH:
+		if a.Sym != nil && ctxt.Flag_dynlink {
+			return C_LBRAPIC
+		}
+		return C_SBRA
+	}
+
+	return C_GOK
+}
+
+func prasm(p *obj.Prog) {
+	fmt.Printf("%v\n", p)
+}
+
+func oplook(ctxt *obj.Link, p *obj.Prog) *Optab {
+	a1 := int(p.Optab)
+	if a1 != 0 {
+		return &optab[a1-1]
+	}
+	a1 = int(p.From.Class)
+	if a1 == 0 {
+		a1 = aclass(ctxt, &p.From) + 1
+		p.From.Class = int8(a1)
+	}
+
+	a1--
+	a3 := C_NONE + 1
+	if p.From3 != nil {
+		a3 = int(p.From3.Class)
+		if a3 == 0 {
+			a3 = aclass(ctxt, p.From3) + 1
+			p.From3.Class = int8(a3)
+		}
+	}
+
+	a3--
+	a4 := int(p.To.Class)
+	if a4 == 0 {
+		a4 = aclass(ctxt, &p.To) + 1
+		p.To.Class = int8(a4)
+	}
+
+	a4--
+	a2 := C_NONE
+	if p.Reg != 0 {
+		if REG_R0 <= p.Reg && p.Reg <= REG_R31 {
+			a2 = C_REG
+		} else if REG_V0 <= p.Reg && p.Reg <= REG_V31 {
+			a2 = C_VREG
+		} else if REG_VS0 <= p.Reg && p.Reg <= REG_VS63 {
+			a2 = C_VSREG
+		} else if REG_F0 <= p.Reg && p.Reg <= REG_F31 {
+			a2 = C_FREG
+		}
+	}
+
+	//print("oplook %v %d %d %d %d\n", p, a1, a2, a3, a4);
+	ops := oprange[p.As&obj.AMask]
+	c1 := &xcmp[a1]
+	c3 := &xcmp[a3]
+	c4 := &xcmp[a4]
+	for i := range ops {
+		op := &ops[i]
+		if int(op.a2) == a2 && c1[op.a1] && c3[op.a3] && c4[op.a4] {
+			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
+			return op
+		}
+	}
+
+	ctxt.Diag("illegal combination %v %v %v %v %v", p.As, DRconv(a1), DRconv(a2), DRconv(a3), DRconv(a4))
+	prasm(p)
+	if ops == nil {
+		ops = optab
+	}
+	return &ops[0]
+}
+
+func cmp(a int, b int) bool {
+	if a == b {
+		return true
+	}
+	switch a {
+	case C_LCON:
+		if b == C_ZCON || b == C_SCON || b == C_UCON || b == C_ADDCON || b == C_ANDCON {
+			return true
+		}
+
+	case C_ADDCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_ANDCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_SPR:
+		if b == C_LR || b == C_XER || b == C_CTR {
+			return true
+		}
+
+	case C_UCON:
+		if b == C_ZCON {
+			return true
+		}
+
+	case C_SCON:
+		if b == C_ZCON {
+			return true
+		}
+
+	case C_LACON:
+		if b == C_SACON {
+			return true
+		}
+
+	case C_LBRA:
+		if b == C_SBRA {
+			return true
+		}
+
+	case C_LEXT:
+		if b == C_SEXT {
+			return true
+		}
+
+	case C_LAUTO:
+		if b == C_SAUTO {
+			return true
+		}
+
+	case C_REG:
+		if b == C_ZCON {
+			return r0iszero != 0 /*TypeKind(100016)*/
+		}
+
+	case C_LOREG:
+		if b == C_ZOREG || b == C_SOREG {
+			return true
+		}
+
+	case C_SOREG:
+		if b == C_ZOREG {
+			return true
+		}
+
+	case C_ANY:
+		return true
+	}
+
+	return false
+}
+
+type ocmp []Optab
+
+func (x ocmp) Len() int {
+	return len(x)
+}
+
+func (x ocmp) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}
+
+func (x ocmp) Less(i, j int) bool {
+	p1 := &x[i]
+	p2 := &x[j]
+	n := int(p1.as) - int(p2.as)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a1) - int(p2.a1)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a2) - int(p2.a2)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a3) - int(p2.a3)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a4) - int(p2.a4)
+	if n != 0 {
+		return n < 0
+	}
+	return false
+}
+func opset(a, b0 obj.As) {
+	oprange[a&obj.AMask] = oprange[b0]
+}
+
+func buildop(ctxt *obj.Link) {
+	var n int
+
+	for i := 0; i < C_NCLASS; i++ {
+		for n = 0; n < C_NCLASS; n++ {
+			if cmp(n, i) {
+				xcmp[i][n] = true
+			}
+		}
+	}
+	for n = 0; optab[n].as != obj.AXXX; n++ {
+	}
+	sort.Sort(ocmp(optab[:n]))
+	for i := 0; i < n; i++ {
+		r := optab[i].as
+		r0 := r & obj.AMask
+		start := i
+		for optab[i].as == r {
+			i++
+		}
+		oprange[r0] = optab[start:i]
+		i--
+
+		switch r {
+		default:
+			ctxt.Diag("unknown op in build: %v", r)
+			log.Fatalf("instruction missing from switch in asm9.go:buildop: %v", r)
+
+		case ADCBF: /* unary indexed: op (b+a); op (b) */
+			opset(ADCBI, r0)
+
+			opset(ADCBST, r0)
+			opset(ADCBT, r0)
+			opset(ADCBTST, r0)
+			opset(ADCBZ, r0)
+			opset(AICBI, r0)
+
+		case AECOWX: /* indexed store: op s,(b+a); op s,(b) */
+			opset(ASTWCCC, r0)
+			opset(ASTBCCC, r0)
+
+			opset(ASTDCCC, r0)
+
+		case AREM: /* macro */
+			opset(AREMCC, r0)
+
+			opset(AREMV, r0)
+			opset(AREMVCC, r0)
+
+		case AREMU:
+			opset(AREMU, r0)
+			opset(AREMUCC, r0)
+			opset(AREMUV, r0)
+			opset(AREMUVCC, r0)
+
+		case AREMD:
+			opset(AREMDCC, r0)
+			opset(AREMDV, r0)
+			opset(AREMDVCC, r0)
+
+		case AREMDU:
+			opset(AREMDU, r0)
+			opset(AREMDUCC, r0)
+			opset(AREMDUV, r0)
+			opset(AREMDUVCC, r0)
+
+		case ADIVW: /* op Rb[,Ra],Rd */
+			opset(AMULHW, r0)
+
+			opset(AMULHWCC, r0)
+			opset(AMULHWU, r0)
+			opset(AMULHWUCC, r0)
+			opset(AMULLWCC, r0)
+			opset(AMULLWVCC, r0)
+			opset(AMULLWV, r0)
+			opset(ADIVWCC, r0)
+			opset(ADIVWV, r0)
+			opset(ADIVWVCC, r0)
+			opset(ADIVWU, r0)
+			opset(ADIVWUCC, r0)
+			opset(ADIVWUV, r0)
+			opset(ADIVWUVCC, r0)
+			opset(AADDCC, r0)
+			opset(AADDCV, r0)
+			opset(AADDCVCC, r0)
+			opset(AADDV, r0)
+			opset(AADDVCC, r0)
+			opset(AADDE, r0)
+			opset(AADDECC, r0)
+			opset(AADDEV, r0)
+			opset(AADDEVCC, r0)
+			opset(ACRAND, r0)
+			opset(ACRANDN, r0)
+			opset(ACREQV, r0)
+			opset(ACRNAND, r0)
+			opset(ACRNOR, r0)
+			opset(ACROR, r0)
+			opset(ACRORN, r0)
+			opset(ACRXOR, r0)
+			opset(AMULHD, r0)
+			opset(AMULHDCC, r0)
+			opset(AMULHDU, r0)
+			opset(AMULHDUCC, r0)
+			opset(AMULLD, r0)
+			opset(AMULLDCC, r0)
+			opset(AMULLDVCC, r0)
+			opset(AMULLDV, r0)
+			opset(ADIVD, r0)
+			opset(ADIVDCC, r0)
+			opset(ADIVDE, r0)
+			opset(ADIVDEU, r0)
+			opset(ADIVDECC, r0)
+			opset(ADIVDEUCC, r0)
+			opset(ADIVDVCC, r0)
+			opset(ADIVDV, r0)
+			opset(ADIVDU, r0)
+			opset(ADIVDUCC, r0)
+			opset(ADIVDUVCC, r0)
+			opset(ADIVDUCC, r0)
+
+		case AMOVBZ: /* lbz, stz, rlwm(r/r), lhz, lha, stz, and x variants */
+			opset(AMOVH, r0)
+
+			opset(AMOVHZ, r0)
+
+		case AMOVBZU: /* lbz[x]u, stb[x]u, lhz[x]u, lha[x]u, sth[u]x, ld[x]u, std[u]x */
+			opset(AMOVHU, r0)
+
+			opset(AMOVHZU, r0)
+			opset(AMOVWU, r0)
+			opset(AMOVWZU, r0)
+			opset(AMOVDU, r0)
+			opset(AMOVMW, r0)
+
+		case ALV: /* lvebx, lvehx, lvewx, lvx, lvxl, lvsl, lvsr */
+			opset(ALVEBX, r0)
+			opset(ALVEHX, r0)
+			opset(ALVEWX, r0)
+			opset(ALVX, r0)
+			opset(ALVXL, r0)
+			opset(ALVSL, r0)
+			opset(ALVSR, r0)
+
+		case ASTV: /* stvebx, stvehx, stvewx, stvx, stvxl */
+			opset(ASTVEBX, r0)
+			opset(ASTVEHX, r0)
+			opset(ASTVEWX, r0)
+			opset(ASTVX, r0)
+			opset(ASTVXL, r0)
+
+		case AVAND: /* vand, vandc, vnand */
+			opset(AVANDL, r0)
+			opset(AVANDC, r0)
+			opset(AVNAND, r0)
+
+		case AVOR: /* vor, vorc, vxor, vnor, veqv */
+			opset(AVORL, r0)
+			opset(AVORC, r0)
+			opset(AVXOR, r0)
+			opset(AVNOR, r0)
+			opset(AVEQV, r0)
+
+		case AVADDUM: /* vaddubm, vadduhm, vadduwm, vaddudm, vadduqm */
+			opset(AVADDUBM, r0)
+			opset(AVADDUHM, r0)
+			opset(AVADDUWM, r0)
+			opset(AVADDUDM, r0)
+			opset(AVADDUQM, r0)
+
+		case AVADDCU: /* vaddcuq, vaddcuw */
+			opset(AVADDCUQ, r0)
+			opset(AVADDCUW, r0)
+
+		case AVADDUS: /* vaddubs, vadduhs, vadduws */
+			opset(AVADDUBS, r0)
+			opset(AVADDUHS, r0)
+			opset(AVADDUWS, r0)
+
+		case AVADDSS: /* vaddsbs, vaddshs, vaddsws */
+			opset(AVADDSBS, r0)
+			opset(AVADDSHS, r0)
+			opset(AVADDSWS, r0)
+
+		case AVADDE: /* vaddeuqm, vaddecuq */
+			opset(AVADDEUQM, r0)
+			opset(AVADDECUQ, r0)
+
+		case AVSUBUM: /* vsububm, vsubuhm, vsubuwm, vsubudm, vsubuqm */
+			opset(AVSUBUBM, r0)
+			opset(AVSUBUHM, r0)
+			opset(AVSUBUWM, r0)
+			opset(AVSUBUDM, r0)
+			opset(AVSUBUQM, r0)
+
+		case AVSUBCU: /* vsubcuq, vsubcuw */
+			opset(AVSUBCUQ, r0)
+			opset(AVSUBCUW, r0)
+
+		case AVSUBUS: /* vsububs, vsubuhs, vsubuws */
+			opset(AVSUBUBS, r0)
+			opset(AVSUBUHS, r0)
+			opset(AVSUBUWS, r0)
+
+		case AVSUBSS: /* vsubsbs, vsubshs, vsubsws */
+			opset(AVSUBSBS, r0)
+			opset(AVSUBSHS, r0)
+			opset(AVSUBSWS, r0)
+
+		case AVSUBE: /* vsubeuqm, vsubecuq */
+			opset(AVSUBEUQM, r0)
+			opset(AVSUBECUQ, r0)
+
+		case AVR: /* vrlb, vrlh, vrlw, vrld */
+			opset(AVRLB, r0)
+			opset(AVRLH, r0)
+			opset(AVRLW, r0)
+			opset(AVRLD, r0)
+
+		case AVS: /* vs[l,r], vs[l,r]o, vs[l,r]b, vs[l,r]h, vs[l,r]w, vs[l,r]d */
+			opset(AVSLB, r0)
+			opset(AVSLH, r0)
+			opset(AVSLW, r0)
+			opset(AVSL, r0)
+			opset(AVSLO, r0)
+			opset(AVSRB, r0)
+			opset(AVSRH, r0)
+			opset(AVSRW, r0)
+			opset(AVSR, r0)
+			opset(AVSRO, r0)
+			opset(AVSLD, r0)
+			opset(AVSRD, r0)
+
+		case AVSA: /* vsrab, vsrah, vsraw, vsrad */
+			opset(AVSRAB, r0)
+			opset(AVSRAH, r0)
+			opset(AVSRAW, r0)
+			opset(AVSRAD, r0)
+
+		case AVSOI: /* vsldoi */
+			opset(AVSLDOI, r0)
+
+		case AVCLZ: /* vclzb, vclzh, vclzw, vclzd */
+			opset(AVCLZB, r0)
+			opset(AVCLZH, r0)
+			opset(AVCLZW, r0)
+			opset(AVCLZD, r0)
+
+		case AVPOPCNT: /* vpopcntb, vpopcnth, vpopcntw, vpopcntd */
+			opset(AVPOPCNTB, r0)
+			opset(AVPOPCNTH, r0)
+			opset(AVPOPCNTW, r0)
+			opset(AVPOPCNTD, r0)
+
+		case AVCMPEQ: /* vcmpequb[.], vcmpequh[.], vcmpequw[.], vcmpequd[.] */
+			opset(AVCMPEQUB, r0)
+			opset(AVCMPEQUBCC, r0)
+			opset(AVCMPEQUH, r0)
+			opset(AVCMPEQUHCC, r0)
+			opset(AVCMPEQUW, r0)
+			opset(AVCMPEQUWCC, r0)
+			opset(AVCMPEQUD, r0)
+			opset(AVCMPEQUDCC, r0)
+
+		case AVCMPGT: /* vcmpgt[u,s]b[.], vcmpgt[u,s]h[.], vcmpgt[u,s]w[.], vcmpgt[u,s]d[.] */
+			opset(AVCMPGTUB, r0)
+			opset(AVCMPGTUBCC, r0)
+			opset(AVCMPGTUH, r0)
+			opset(AVCMPGTUHCC, r0)
+			opset(AVCMPGTUW, r0)
+			opset(AVCMPGTUWCC, r0)
+			opset(AVCMPGTUD, r0)
+			opset(AVCMPGTUDCC, r0)
+			opset(AVCMPGTSB, r0)
+			opset(AVCMPGTSBCC, r0)
+			opset(AVCMPGTSH, r0)
+			opset(AVCMPGTSHCC, r0)
+			opset(AVCMPGTSW, r0)
+			opset(AVCMPGTSWCC, r0)
+			opset(AVCMPGTSD, r0)
+			opset(AVCMPGTSDCC, r0)
+
+		case AVPERM: /* vperm */
+			opset(AVPERM, r0)
+
+		case AVSEL: /* vsel */
+			opset(AVSEL, r0)
+
+		case AVSPLT: /* vspltb, vsplth, vspltw */
+			opset(AVSPLTB, r0)
+			opset(AVSPLTH, r0)
+			opset(AVSPLTW, r0)
+
+		case AVSPLTI: /* vspltisb, vspltish, vspltisw */
+			opset(AVSPLTISB, r0)
+			opset(AVSPLTISH, r0)
+			opset(AVSPLTISW, r0)
+
+		case AVCIPH: /* vcipher, vcipherlast */
+			opset(AVCIPHER, r0)
+			opset(AVCIPHERLAST, r0)
+
+		case AVNCIPH: /* vncipher, vncipherlast */
+			opset(AVNCIPHER, r0)
+			opset(AVNCIPHERLAST, r0)
+
+		case AVSBOX: /* vsbox */
+			opset(AVSBOX, r0)
+
+		case AVSHASIGMA: /* vshasigmaw, vshasigmad */
+			opset(AVSHASIGMAW, r0)
+			opset(AVSHASIGMAD, r0)
+
+		case ALXV: /* lxvd2x, lxvdsx, lxvw4x */
+			opset(ALXVD2X, r0)
+			opset(ALXVDSX, r0)
+			opset(ALXVW4X, r0)
+
+		case ASTXV: /* stxvd2x, stxvdsx, stxvw4x */
+			opset(ASTXVD2X, r0)
+			opset(ASTXVW4X, r0)
+
+		case ALXS: /* lxsdx  */
+			opset(ALXSDX, r0)
+
+		case ASTXS: /* stxsdx */
+			opset(ASTXSDX, r0)
+
+		case ALXSI: /* lxsiwax, lxsiwzx  */
+			opset(ALXSIWAX, r0)
+			opset(ALXSIWZX, r0)
+
+		case ASTXSI: /* stxsiwx */
+			opset(ASTXSIWX, r0)
+
+		case AMFVSR: /* mfvsrd, mfvsrwz */
+			opset(AMFVSRD, r0)
+			opset(AMFVSRWZ, r0)
+
+		case AMTVSR: /* mtvsrd, mtvsrwa, mtvsrwz */
+			opset(AMTVSRD, r0)
+			opset(AMTVSRWA, r0)
+			opset(AMTVSRWZ, r0)
+
+		case AXXLAND: /* xxland, xxlandc, xxleqv, xxlnand */
+			opset(AXXLANDQ, r0)
+			opset(AXXLANDC, r0)
+			opset(AXXLEQV, r0)
+			opset(AXXLNAND, r0)
+
+		case AXXLOR: /* xxlorc, xxlnor, xxlor, xxlxor */
+			opset(AXXLORC, r0)
+			opset(AXXLNOR, r0)
+			opset(AXXLORQ, r0)
+			opset(AXXLXOR, r0)
+
+		case AXXSEL: /* xxsel */
+			opset(AXXSEL, r0)
+
+		case AXXMRG: /* xxmrghw, xxmrglw */
+			opset(AXXMRGHW, r0)
+			opset(AXXMRGLW, r0)
+
+		case AXXSPLT: /* xxspltw */
+			opset(AXXSPLTW, r0)
+
+		case AXXPERM: /* xxpermdi */
+			opset(AXXPERMDI, r0)
+
+		case AXXSI: /* xxsldwi */
+			opset(AXXSLDWI, r0)
+
+		case AXSCV: /* xscvdpsp, xscvspdp, xscvdpspn, xscvspdpn */
+			opset(AXSCVDPSP, r0)
+			opset(AXSCVSPDP, r0)
+			opset(AXSCVDPSPN, r0)
+			opset(AXSCVSPDPN, r0)
+
+		case AXVCV: /* xvcvdpsp, xvcvspdp */
+			opset(AXVCVDPSP, r0)
+			opset(AXVCVSPDP, r0)
+
+		case AXSCVX: /* xscvdpsxds, xscvdpsxws, xscvdpuxds, xscvdpuxws */
+			opset(AXSCVDPSXDS, r0)
+			opset(AXSCVDPSXWS, r0)
+			opset(AXSCVDPUXDS, r0)
+			opset(AXSCVDPUXWS, r0)
+
+		case AXSCVXP: /* xscvsxddp, xscvuxddp, xscvsxdsp, xscvuxdsp */
+			opset(AXSCVSXDDP, r0)
+			opset(AXSCVUXDDP, r0)
+			opset(AXSCVSXDSP, r0)
+			opset(AXSCVUXDSP, r0)
+
+		case AXVCVX: /* xvcvdpsxds, xvcvdpsxws, xvcvdpuxds, xvcvdpuxws, xvcvspsxds, xvcvspsxws, xvcvspuxds, xvcvspuxws */
+			opset(AXVCVDPSXDS, r0)
+			opset(AXVCVDPSXWS, r0)
+			opset(AXVCVDPUXDS, r0)
+			opset(AXVCVDPUXWS, r0)
+			opset(AXVCVSPSXDS, r0)
+			opset(AXVCVSPSXWS, r0)
+			opset(AXVCVSPUXDS, r0)
+			opset(AXVCVSPUXWS, r0)
+
+		case AXVCVXP: /* xvcvsxddp, xvcvsxwdp, xvcvuxddp, xvcvuxwdp, xvcvsxdsp, xvcvsxwsp, xvcvuxdsp, xvcvuxwsp */
+			opset(AXVCVSXDDP, r0)
+			opset(AXVCVSXWDP, r0)
+			opset(AXVCVUXDDP, r0)
+			opset(AXVCVUXWDP, r0)
+			opset(AXVCVSXDSP, r0)
+			opset(AXVCVSXWSP, r0)
+			opset(AXVCVUXDSP, r0)
+			opset(AXVCVUXWSP, r0)
+
+		case AAND: /* logical op Rb,Rs,Ra; no literal */
+			opset(AANDN, r0)
+
+			opset(AANDNCC, r0)
+			opset(AEQV, r0)
+			opset(AEQVCC, r0)
+			opset(ANAND, r0)
+			opset(ANANDCC, r0)
+			opset(ANOR, r0)
+			opset(ANORCC, r0)
+			opset(AORCC, r0)
+			opset(AORN, r0)
+			opset(AORNCC, r0)
+			opset(AXORCC, r0)
+
+		case AADDME: /* op Ra, Rd */
+			opset(AADDMECC, r0)
+
+			opset(AADDMEV, r0)
+			opset(AADDMEVCC, r0)
+			opset(AADDZE, r0)
+			opset(AADDZECC, r0)
+			opset(AADDZEV, r0)
+			opset(AADDZEVCC, r0)
+			opset(ASUBME, r0)
+			opset(ASUBMECC, r0)
+			opset(ASUBMEV, r0)
+			opset(ASUBMEVCC, r0)
+			opset(ASUBZE, r0)
+			opset(ASUBZECC, r0)
+			opset(ASUBZEV, r0)
+			opset(ASUBZEVCC, r0)
+
+		case AADDC:
+			opset(AADDCCC, r0)
+
+		case ABEQ:
+			opset(ABGE, r0)
+			opset(ABGT, r0)
+			opset(ABLE, r0)
+			opset(ABLT, r0)
+			opset(ABNE, r0)
+			opset(ABVC, r0)
+			opset(ABVS, r0)
+
+		case ABR:
+			opset(ABL, r0)
+
+		case ABC:
+			opset(ABCL, r0)
+
+		case AEXTSB: /* op Rs, Ra */
+			opset(AEXTSBCC, r0)
+
+			opset(AEXTSH, r0)
+			opset(AEXTSHCC, r0)
+			opset(ACNTLZW, r0)
+			opset(ACNTLZWCC, r0)
+			opset(ACNTLZD, r0)
+			opset(AEXTSW, r0)
+			opset(AEXTSWCC, r0)
+			opset(ACNTLZDCC, r0)
+
+		case AFABS: /* fop [s,]d */
+			opset(AFABSCC, r0)
+
+			opset(AFNABS, r0)
+			opset(AFNABSCC, r0)
+			opset(AFNEG, r0)
+			opset(AFNEGCC, r0)
+			opset(AFRSP, r0)
+			opset(AFRSPCC, r0)
+			opset(AFCTIW, r0)
+			opset(AFCTIWCC, r0)
+			opset(AFCTIWZ, r0)
+			opset(AFCTIWZCC, r0)
+			opset(AFCTID, r0)
+			opset(AFCTIDCC, r0)
+			opset(AFCTIDZ, r0)
+			opset(AFCTIDZCC, r0)
+			opset(AFCFID, r0)
+			opset(AFCFIDCC, r0)
+			opset(AFCFIDU, r0)
+			opset(AFCFIDUCC, r0)
+			opset(AFRES, r0)
+			opset(AFRESCC, r0)
+			opset(AFRIM, r0)
+			opset(AFRIMCC, r0)
+			opset(AFRIP, r0)
+			opset(AFRIPCC, r0)
+			opset(AFRIZ, r0)
+			opset(AFRIZCC, r0)
+			opset(AFRSQRTE, r0)
+			opset(AFRSQRTECC, r0)
+			opset(AFSQRT, r0)
+			opset(AFSQRTCC, r0)
+			opset(AFSQRTS, r0)
+			opset(AFSQRTSCC, r0)
+
+		case AFADD:
+			opset(AFADDS, r0)
+			opset(AFADDCC, r0)
+			opset(AFADDSCC, r0)
+			opset(AFDIV, r0)
+			opset(AFDIVS, r0)
+			opset(AFDIVCC, r0)
+			opset(AFDIVSCC, r0)
+			opset(AFSUB, r0)
+			opset(AFSUBS, r0)
+			opset(AFSUBCC, r0)
+			opset(AFSUBSCC, r0)
+
+		case AFMADD:
+			opset(AFMADDCC, r0)
+			opset(AFMADDS, r0)
+			opset(AFMADDSCC, r0)
+			opset(AFMSUB, r0)
+			opset(AFMSUBCC, r0)
+			opset(AFMSUBS, r0)
+			opset(AFMSUBSCC, r0)
+			opset(AFNMADD, r0)
+			opset(AFNMADDCC, r0)
+			opset(AFNMADDS, r0)
+			opset(AFNMADDSCC, r0)
+			opset(AFNMSUB, r0)
+			opset(AFNMSUBCC, r0)
+			opset(AFNMSUBS, r0)
+			opset(AFNMSUBSCC, r0)
+			opset(AFSEL, r0)
+			opset(AFSELCC, r0)
+
+		case AFMUL:
+			opset(AFMULS, r0)
+			opset(AFMULCC, r0)
+			opset(AFMULSCC, r0)
+
+		case AFCMPO:
+			opset(AFCMPU, r0)
+
+		case AISEL:
+			opset(AISEL, r0)
+
+		case AMTFSB0:
+			opset(AMTFSB0CC, r0)
+			opset(AMTFSB1, r0)
+			opset(AMTFSB1CC, r0)
+
+		case ANEG: /* op [Ra,] Rd */
+			opset(ANEGCC, r0)
+
+			opset(ANEGV, r0)
+			opset(ANEGVCC, r0)
+
+		case AOR: /* or/xor Rb,Rs,Ra; ori/xori $uimm,Rs,Ra; oris/xoris $uimm,Rs,Ra */
+			opset(AXOR, r0)
+
+		case ASLW:
+			opset(ASLWCC, r0)
+			opset(ASRW, r0)
+			opset(ASRWCC, r0)
+
+		case ASLD:
+			opset(ASLDCC, r0)
+			opset(ASRD, r0)
+			opset(ASRDCC, r0)
+
+		case ASRAW: /* sraw Rb,Rs,Ra; srawi sh,Rs,Ra */
+			opset(ASRAWCC, r0)
+
+		case ASRAD: /* sraw Rb,Rs,Ra; srawi sh,Rs,Ra */
+			opset(ASRADCC, r0)
+
+		case ASUB: /* SUB Ra,Rb,Rd => subf Rd,ra,rb */
+			opset(ASUB, r0)
+
+			opset(ASUBCC, r0)
+			opset(ASUBV, r0)
+			opset(ASUBVCC, r0)
+			opset(ASUBCCC, r0)
+			opset(ASUBCV, r0)
+			opset(ASUBCVCC, r0)
+			opset(ASUBE, r0)
+			opset(ASUBECC, r0)
+			opset(ASUBEV, r0)
+			opset(ASUBEVCC, r0)
+
+		case ASYNC:
+			opset(AISYNC, r0)
+			opset(ALWSYNC, r0)
+			opset(APTESYNC, r0)
+			opset(ATLBSYNC, r0)
+
+		case ARLWMI:
+			opset(ARLWMICC, r0)
+			opset(ARLWNM, r0)
+			opset(ARLWNMCC, r0)
+
+		case ARLDMI:
+			opset(ARLDMICC, r0)
+			opset(ARLDIMI, r0)
+			opset(ARLDIMICC, r0)
+
+		case ARLDC:
+			opset(ARLDCCC, r0)
+
+		case ARLDCL:
+			opset(ARLDCR, r0)
+			opset(ARLDCLCC, r0)
+			opset(ARLDCRCC, r0)
+
+		case ARLDICL:
+			opset(ARLDICLCC, r0)
+			opset(ARLDICR, r0)
+			opset(ARLDICRCC, r0)
+
+		case AFMOVD:
+			opset(AFMOVDCC, r0)
+			opset(AFMOVDU, r0)
+			opset(AFMOVS, r0)
+			opset(AFMOVSU, r0)
+
+		case AECIWX:
+			opset(ALBAR, r0)
+			opset(ALWAR, r0)
+			opset(ALDAR, r0)
+
+		case ASYSCALL: /* just the op; flow of control */
+			opset(ARFI, r0)
+
+			opset(ARFCI, r0)
+			opset(ARFID, r0)
+			opset(AHRFID, r0)
+
+		case AMOVHBR:
+			opset(AMOVWBR, r0)
+			opset(AMOVDBR, r0)
+
+		case ASLBMFEE:
+			opset(ASLBMFEV, r0)
+
+		case ATW:
+			opset(ATD, r0)
+
+		case ATLBIE:
+			opset(ASLBIE, r0)
+			opset(ATLBIEL, r0)
+
+		case AEIEIO:
+			opset(ASLBIA, r0)
+
+		case ACMP:
+			opset(ACMPW, r0)
+
+		case ACMPU:
+			opset(ACMPWU, r0)
+
+		case AADD,
+			AANDCC, /* and. Rb,Rs,Ra; andi. $uimm,Rs,Ra; andis. $uimm,Rs,Ra */
+			AFMOVSX,
+			AFMOVSZ,
+			ALSW,
+			AMOVW,
+			/* load/store/move word with sign extension; special 32-bit move; move 32-bit literals */
+			AMOVWZ, /* load/store/move word with zero extension; move 32-bit literals  */
+			AMOVD,  /* load/store/move 64-bit values, including 32-bit literals with/without sign-extension */
+			AMOVB,  /* macro: move byte with sign extension */
+			AMOVBU, /* macro: move byte with sign extension & update */
+			AMOVFL,
+			AMULLW,
+			/* op $s[,r2],r3; op r1[,r2],r3; no cc/v */
+			ASUBC, /* op r1,$s,r3; op r1[,r2],r3 */
+			ASTSW,
+			ASLBMTE,
+			AWORD,
+			ADWORD,
+			obj.ANOP,
+			obj.ATEXT,
+			obj.AUNDEF,
+			obj.AUSEFIELD,
+			obj.AFUNCDATA,
+			obj.APCDATA,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			break
+		}
+	}
+}
+
+func OPVXX1(o uint32, xo uint32, oe uint32) uint32 {
+	return o<<26 | xo<<1 | oe<<11
+}
+
+func OPVXX2(o uint32, xo uint32, oe uint32) uint32 {
+	return o<<26 | xo<<2 | oe<<11
+}
+
+func OPVXX3(o uint32, xo uint32, oe uint32) uint32 {
+	return o<<26 | xo<<3 | oe<<11
+}
+
+func OPVXX4(o uint32, xo uint32, oe uint32) uint32 {
+	return o<<26 | xo<<4 | oe<<11
+}
+
+func OPVX(o uint32, xo uint32, oe uint32, rc uint32) uint32 {
+	return o<<26 | xo | oe<<11 | rc&1
+}
+
+func OPVC(o uint32, xo uint32, oe uint32, rc uint32) uint32 {
+	return o<<26 | xo | oe<<11 | (rc&1)<<10
+}
+
+func OPVCC(o uint32, xo uint32, oe uint32, rc uint32) uint32 {
+	return o<<26 | xo<<1 | oe<<10 | rc&1
+}
+
+func OPCC(o uint32, xo uint32, rc uint32) uint32 {
+	return OPVCC(o, xo, 0, rc)
+}
+
+func OP(o uint32, xo uint32) uint32 {
+	return OPVCC(o, xo, 0, 0)
+}
+
+/* the order is dest, a/s, b/imm for both arithmetic and logical operations */
+func AOP_RRR(op uint32, d uint32, a uint32, b uint32) uint32 {
+	return op | (d&31)<<21 | (a&31)<<16 | (b&31)<<11
+}
+
+/* VX-form 2-register operands, r/r/none */
+func AOP_RR(op uint32, d uint32, a uint32) uint32 {
+	return op | (d&31)<<21 | (a&31)<<11
+}
+
+/* VA-form 4-register operands */
+func AOP_RRRR(op uint32, d uint32, a uint32, b uint32, c uint32) uint32 {
+	return op | (d&31)<<21 | (a&31)<<16 | (b&31)<<11 | (c&31)<<6
+}
+
+func AOP_IRR(op uint32, d uint32, a uint32, simm uint32) uint32 {
+	return op | (d&31)<<21 | (a&31)<<16 | simm&0xFFFF
+}
+
+/* VX-form 2-register + UIM operands */
+func AOP_VIRR(op uint32, d uint32, a uint32, simm uint32) uint32 {
+	return op | (d&31)<<21 | (simm&0xFFFF)<<16 | (a&31)<<11
+}
+
+/* VX-form 2-register + ST + SIX operands */
+func AOP_IIRR(op uint32, d uint32, a uint32, sbit uint32, simm uint32) uint32 {
+	return op | (d&31)<<21 | (a&31)<<16 | (sbit&1)<<15 | (simm&0xF)<<11
+}
+
+/* VA-form 3-register + SHB operands */
+func AOP_IRRR(op uint32, d uint32, a uint32, b uint32, simm uint32) uint32 {
+	return op | (d&31)<<21 | (a&31)<<16 | (b&31)<<11 | (simm&0xF)<<6
+}
+
+/* VX-form 1-register + SIM operands */
+func AOP_IR(op uint32, d uint32, simm uint32) uint32 {
+	return op | (d&31)<<21 | (simm&31)<<16
+}
+
+/* XX1-form 3-register operands, 1 VSR operand */
+func AOP_XX1(op uint32, d uint32, a uint32, b uint32) uint32 {
+	/* For the XX-form encodings, we need the VSX register number to be exactly */
+	/* between 0-63, so we can properly set the rightmost bits. */
+	r := d - REG_VS0
+	return op | (r&31)<<21 | (a&31)<<16 | (b&31)<<11 | (r&32)>>5
+}
+
+/* XX2-form 3-register operands, 2 VSR operands */
+func AOP_XX2(op uint32, d uint32, a uint32, b uint32) uint32 {
+	xt := d - REG_VS0
+	xb := b - REG_VS0
+	return op | (xt&31)<<21 | (a&3)<<16 | (xb&31)<<11 | (xb&32)>>4 | (xt&32)>>5
+}
+
+/* XX3-form 3 VSR operands */
+func AOP_XX3(op uint32, d uint32, a uint32, b uint32) uint32 {
+	xt := d - REG_VS0
+	xa := a - REG_VS0
+	xb := b - REG_VS0
+	return op | (xt&31)<<21 | (xa&31)<<16 | (xb&31)<<11 | (xa&32)>>3 | (xb&32)>>4 | (xt&32)>>5
+}
+
+/* XX3-form 3 VSR operands + immediate */
+func AOP_XX3I(op uint32, d uint32, a uint32, b uint32, c uint32) uint32 {
+	xt := d - REG_VS0
+	xa := a - REG_VS0
+	xb := b - REG_VS0
+	return op | (xt&31)<<21 | (xa&31)<<16 | (xb&31)<<11 | (c&3)<<8 | (xa&32)>>3 | (xb&32)>>4 | (xt&32)>>5
+}
+
+/* XX4-form, 4 VSR operands */
+func AOP_XX4(op uint32, d uint32, a uint32, b uint32, c uint32) uint32 {
+	xt := d - REG_VS0
+	xa := a - REG_VS0
+	xb := b - REG_VS0
+	xc := c - REG_VS0
+	return op | (xt&31)<<21 | (xa&31)<<16 | (xb&31)<<11 | (xc&31)<<6 | (xc&32)>>2 | (xa&32)>>3 | (xb&32)>>4 | (xt&32)>>5
+}
+
+func LOP_RRR(op uint32, a uint32, s uint32, b uint32) uint32 {
+	return op | (s&31)<<21 | (a&31)<<16 | (b&31)<<11
+}
+
+func LOP_IRR(op uint32, a uint32, s uint32, uimm uint32) uint32 {
+	return op | (s&31)<<21 | (a&31)<<16 | uimm&0xFFFF
+}
+
+func OP_BR(op uint32, li uint32, aa uint32) uint32 {
+	return op | li&0x03FFFFFC | aa<<1
+}
+
+func OP_BC(op uint32, bo uint32, bi uint32, bd uint32, aa uint32) uint32 {
+	return op | (bo&0x1F)<<21 | (bi&0x1F)<<16 | bd&0xFFFC | aa<<1
+}
+
+func OP_BCR(op uint32, bo uint32, bi uint32) uint32 {
+	return op | (bo&0x1F)<<21 | (bi&0x1F)<<16
+}
+
+func OP_RLW(op uint32, a uint32, s uint32, sh uint32, mb uint32, me uint32) uint32 {
+	return op | (s&31)<<21 | (a&31)<<16 | (sh&31)<<11 | (mb&31)<<6 | (me&31)<<1
+}
+
+func AOP_ISEL(op uint32, t uint32, a uint32, b uint32, bc uint32) uint32 {
+	return op | (t&31)<<21 | (a&31)<<16 | (b&31)<<11 | (bc&0x1F)<<6
+}
+
+const (
+	/* each rhs is OPVCC(_, _, _, _) */
+	OP_ADD    = 31<<26 | 266<<1 | 0<<10 | 0
+	OP_ADDI   = 14<<26 | 0<<1 | 0<<10 | 0
+	OP_ADDIS  = 15<<26 | 0<<1 | 0<<10 | 0
+	OP_ANDI   = 28<<26 | 0<<1 | 0<<10 | 0
+	OP_EXTSB  = 31<<26 | 954<<1 | 0<<10 | 0
+	OP_EXTSH  = 31<<26 | 922<<1 | 0<<10 | 0
+	OP_EXTSW  = 31<<26 | 986<<1 | 0<<10 | 0
+	OP_ISEL   = 31<<26 | 15<<1 | 0<<10 | 0
+	OP_MCRF   = 19<<26 | 0<<1 | 0<<10 | 0
+	OP_MCRFS  = 63<<26 | 64<<1 | 0<<10 | 0
+	OP_MCRXR  = 31<<26 | 512<<1 | 0<<10 | 0
+	OP_MFCR   = 31<<26 | 19<<1 | 0<<10 | 0
+	OP_MFFS   = 63<<26 | 583<<1 | 0<<10 | 0
+	OP_MFMSR  = 31<<26 | 83<<1 | 0<<10 | 0
+	OP_MFSPR  = 31<<26 | 339<<1 | 0<<10 | 0
+	OP_MFSR   = 31<<26 | 595<<1 | 0<<10 | 0
+	OP_MFSRIN = 31<<26 | 659<<1 | 0<<10 | 0
+	OP_MTCRF  = 31<<26 | 144<<1 | 0<<10 | 0
+	OP_MTFSF  = 63<<26 | 711<<1 | 0<<10 | 0
+	OP_MTFSFI = 63<<26 | 134<<1 | 0<<10 | 0
+	OP_MTMSR  = 31<<26 | 146<<1 | 0<<10 | 0
+	OP_MTMSRD = 31<<26 | 178<<1 | 0<<10 | 0
+	OP_MTSPR  = 31<<26 | 467<<1 | 0<<10 | 0
+	OP_MTSR   = 31<<26 | 210<<1 | 0<<10 | 0
+	OP_MTSRIN = 31<<26 | 242<<1 | 0<<10 | 0
+	OP_MULLW  = 31<<26 | 235<<1 | 0<<10 | 0
+	OP_MULLD  = 31<<26 | 233<<1 | 0<<10 | 0
+	OP_OR     = 31<<26 | 444<<1 | 0<<10 | 0
+	OP_ORI    = 24<<26 | 0<<1 | 0<<10 | 0
+	OP_ORIS   = 25<<26 | 0<<1 | 0<<10 | 0
+	OP_RLWINM = 21<<26 | 0<<1 | 0<<10 | 0
+	OP_SUBF   = 31<<26 | 40<<1 | 0<<10 | 0
+	OP_RLDIC  = 30<<26 | 4<<1 | 0<<10 | 0
+	OP_RLDICR = 30<<26 | 2<<1 | 0<<10 | 0
+	OP_RLDICL = 30<<26 | 0<<1 | 0<<10 | 0
+)
+
+func oclass(a *obj.Addr) int {
+	return int(a.Class) - 1
+}
+
+const (
+	D_FORM = iota
+	DS_FORM
+)
+
+// opform returns the form (D_FORM or DS_FORM) of an instruction. Used to decide on
+// which relocation to use with a load or store and only supports the needed
+// instructions.
+func opform(ctxt *obj.Link, insn uint32) int {
+	switch insn {
+	default:
+		ctxt.Diag("bad insn in loadform: %x", insn)
+	case OPVCC(58, 0, 0, 0), // ld
+		OPVCC(58, 0, 0, 0) | 1<<1, // lwa
+		OPVCC(62, 0, 0, 0):        // std
+		return DS_FORM
+	case OP_ADDI, // add
+		OPVCC(32, 0, 0, 0), // lwz
+		OPVCC(42, 0, 0, 0), // lha
+		OPVCC(40, 0, 0, 0), // lhz
+		OPVCC(34, 0, 0, 0), // lbz
+		OPVCC(50, 0, 0, 0), // lfd
+		OPVCC(48, 0, 0, 0), // lfs
+		OPVCC(36, 0, 0, 0), // stw
+		OPVCC(44, 0, 0, 0), // sth
+		OPVCC(38, 0, 0, 0), // stb
+		OPVCC(54, 0, 0, 0), // stfd
+		OPVCC(52, 0, 0, 0): // stfs
+		return D_FORM
+	}
+	return 0
+}
+
+// Encode instructions and create relocation for accessing s+d according to the
+// instruction op with source or destination (as appropriate) register reg.
+func symbolAccess(ctxt *obj.Link, s *obj.LSym, d int64, reg int16, op uint32) (o1, o2 uint32) {
+	var base uint32
+	form := opform(ctxt, op)
+	if ctxt.Flag_shared {
+		base = REG_R2
+	} else {
+		base = REG_R0
+	}
+	o1 = AOP_IRR(OP_ADDIS, REGTMP, base, 0)
+	o2 = AOP_IRR(op, uint32(reg), REGTMP, 0)
+	rel := obj.Addrel(ctxt.Cursym)
+	rel.Off = int32(ctxt.Pc)
+	rel.Siz = 8
+	rel.Sym = s
+	rel.Add = d
+	if ctxt.Flag_shared {
+		switch form {
+		case D_FORM:
+			rel.Type = obj.R_ADDRPOWER_TOCREL
+		case DS_FORM:
+			rel.Type = obj.R_ADDRPOWER_TOCREL_DS
+		}
+
+	} else {
+		switch form {
+		case D_FORM:
+			rel.Type = obj.R_ADDRPOWER
+		case DS_FORM:
+			rel.Type = obj.R_ADDRPOWER_DS
+		}
+	}
+	return
+}
+
+/*
+ * 32-bit masks
+ */
+func getmask(m []byte, v uint32) bool {
+	m[1] = 0
+	m[0] = m[1]
+	if v != ^uint32(0) && v&(1<<31) != 0 && v&1 != 0 { /* MB > ME */
+		if getmask(m, ^v) {
+			i := int(m[0])
+			m[0] = m[1] + 1
+			m[1] = byte(i - 1)
+			return true
+		}
+
+		return false
+	}
+
+	for i := 0; i < 32; i++ {
+		if v&(1<<uint(31-i)) != 0 {
+			m[0] = byte(i)
+			for {
+				m[1] = byte(i)
+				i++
+				if i >= 32 || v&(1<<uint(31-i)) == 0 {
+					break
+				}
+			}
+
+			for ; i < 32; i++ {
+				if v&(1<<uint(31-i)) != 0 {
+					return false
+				}
+			}
+			return true
+		}
+	}
+
+	return false
+}
+
+func maskgen(ctxt *obj.Link, p *obj.Prog, m []byte, v uint32) {
+	if !getmask(m, v) {
+		ctxt.Diag("cannot generate mask #%x\n%v", v, p)
+	}
+}
+
+/*
+ * 64-bit masks (rldic etc)
+ */
+func getmask64(m []byte, v uint64) bool {
+	m[1] = 0
+	m[0] = m[1]
+	for i := 0; i < 64; i++ {
+		if v&(uint64(1)<<uint(63-i)) != 0 {
+			m[0] = byte(i)
+			for {
+				m[1] = byte(i)
+				i++
+				if i >= 64 || v&(uint64(1)<<uint(63-i)) == 0 {
+					break
+				}
+			}
+
+			for ; i < 64; i++ {
+				if v&(uint64(1)<<uint(63-i)) != 0 {
+					return false
+				}
+			}
+			return true
+		}
+	}
+
+	return false
+}
+
+func maskgen64(ctxt *obj.Link, p *obj.Prog, m []byte, v uint64) {
+	if !getmask64(m, v) {
+		ctxt.Diag("cannot generate mask #%x\n%v", v, p)
+	}
+}
+
+func loadu32(r int, d int64) uint32 {
+	v := int32(d >> 16)
+	if isuint32(uint64(d)) {
+		return LOP_IRR(OP_ORIS, uint32(r), REGZERO, uint32(v))
+	}
+	return AOP_IRR(OP_ADDIS, uint32(r), REGZERO, uint32(v))
+}
+
+func high16adjusted(d int32) uint16 {
+	if d&0x8000 != 0 {
+		return uint16((d >> 16) + 1)
+	}
+	return uint16(d >> 16)
+}
+
+func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
+	o1 := uint32(0)
+	o2 := uint32(0)
+	o3 := uint32(0)
+	o4 := uint32(0)
+	o5 := uint32(0)
+
+	//print("%v => case %d\n", p, o->type);
+	switch o.type_ {
+	default:
+		ctxt.Diag("unknown type %d", o.type_)
+		prasm(p)
+
+	case 0: /* pseudo ops */
+		break
+
+	case 1: /* mov r1,r2 ==> OR Rs,Rs,Ra */
+		if p.To.Reg == REGZERO && p.From.Type == obj.TYPE_CONST {
+			v := regoff(ctxt, &p.From)
+			if r0iszero != 0 /*TypeKind(100016)*/ && v != 0 {
+				//nerrors--;
+				ctxt.Diag("literal operation on R0\n%v", p)
+			}
+
+			o1 = LOP_IRR(OP_ADDI, REGZERO, REGZERO, uint32(v))
+			break
+		}
+
+		o1 = LOP_RRR(OP_OR, uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.From.Reg))
+
+	case 2: /* int/cr/fp op Rb,[Ra],Rd */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(p.From.Reg))
+
+	case 3: /* mov $soreg/addcon/ucon, r ==> addis/addi $i,reg',r */
+		d := vregoff(ctxt, &p.From)
+
+		v := int32(d)
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		if r0iszero != 0 /*TypeKind(100016)*/ && p.To.Reg == 0 && (r != 0 || v != 0) {
+			ctxt.Diag("literal operation on R0\n%v", p)
+		}
+		a := OP_ADDI
+		if o.a1 == C_UCON {
+			if d&0xffff != 0 {
+				log.Fatalf("invalid handling of %v", p)
+			}
+			v >>= 16
+			if r == REGZERO && isuint32(uint64(d)) {
+				o1 = LOP_IRR(OP_ORIS, uint32(p.To.Reg), REGZERO, uint32(v))
+				break
+			}
+
+			a = OP_ADDIS
+		} else {
+			if int64(int16(d)) != d {
+				log.Fatalf("invalid handling of %v", p)
+			}
+		}
+
+		o1 = AOP_IRR(uint32(a), uint32(p.To.Reg), uint32(r), uint32(v))
+
+	case 4: /* add/mul $scon,[r1],r2 */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		if r0iszero != 0 /*TypeKind(100016)*/ && p.To.Reg == 0 {
+			ctxt.Diag("literal operation on R0\n%v", p)
+		}
+		if int32(int16(v)) != v {
+			log.Fatalf("mishandled instruction %v", p)
+		}
+		o1 = AOP_IRR(opirr(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(v))
+
+	case 5: /* syscall */
+		o1 = oprrr(ctxt, p.As)
+
+	case 6: /* logical op Rb,[Rs,]Ra; no literal */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = LOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(p.From.Reg))
+
+	case 7: /* mov r, soreg ==> stw o(r) */
+		r := int(p.To.Reg)
+
+		if r == 0 {
+			r = int(o.param)
+		}
+		v := regoff(ctxt, &p.To)
+		if p.To.Type == obj.TYPE_MEM && p.To.Index != 0 {
+			if v != 0 {
+				ctxt.Diag("illegal indexed instruction\n%v", p)
+			}
+			if ctxt.Flag_shared && r == REG_R13 {
+				rel := obj.Addrel(ctxt.Cursym)
+				rel.Off = int32(ctxt.Pc)
+				rel.Siz = 4
+				// This (and the matching part in the load case
+				// below) are the only places in the ppc64 toolchain
+				// that knows the name of the tls variable. Possibly
+				// we could add some assembly syntax so that the name
+				// of the variable does not have to be assumed.
+				rel.Sym = obj.Linklookup(ctxt, "runtime.tls_g", 0)
+				rel.Type = obj.R_POWER_TLS
+			}
+			o1 = AOP_RRR(opstorex(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Index), uint32(r))
+		} else {
+			if int32(int16(v)) != v {
+				log.Fatalf("mishandled instruction %v", p)
+			}
+			o1 = AOP_IRR(opstore(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(v))
+		}
+
+	case 8: /* mov soreg, r ==> lbz/lhz/lwz o(r) */
+		r := int(p.From.Reg)
+
+		if r == 0 {
+			r = int(o.param)
+		}
+		v := regoff(ctxt, &p.From)
+		if p.From.Type == obj.TYPE_MEM && p.From.Index != 0 {
+			if v != 0 {
+				ctxt.Diag("illegal indexed instruction\n%v", p)
+			}
+			if ctxt.Flag_shared && r == REG_R13 {
+				rel := obj.Addrel(ctxt.Cursym)
+				rel.Off = int32(ctxt.Pc)
+				rel.Siz = 4
+				rel.Sym = obj.Linklookup(ctxt, "runtime.tls_g", 0)
+				rel.Type = obj.R_POWER_TLS
+			}
+			o1 = AOP_RRR(oploadx(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Index), uint32(r))
+		} else {
+			if int32(int16(v)) != v {
+				log.Fatalf("mishandled instruction %v", p)
+			}
+			o1 = AOP_IRR(opload(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(v))
+		}
+
+	case 9: /* movb soreg, r ==> lbz o(r),r2; extsb r2,r2 */
+		r := int(p.From.Reg)
+
+		if r == 0 {
+			r = int(o.param)
+		}
+		v := regoff(ctxt, &p.From)
+		if p.From.Type == obj.TYPE_MEM && p.From.Index != 0 {
+			if v != 0 {
+				ctxt.Diag("illegal indexed instruction\n%v", p)
+			}
+			o1 = AOP_RRR(oploadx(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Index), uint32(r))
+		} else {
+			o1 = AOP_IRR(opload(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(v))
+		}
+		o2 = LOP_RRR(OP_EXTSB, uint32(p.To.Reg), uint32(p.To.Reg), 0)
+
+	case 10: /* sub Ra,[Rb],Rd => subf Rd,Ra,Rb */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(r))
+
+	case 11: /* br/bl lbra */
+		v := int32(0)
+
+		if p.Pcond != nil {
+			v = int32(p.Pcond.Pc - p.Pc)
+			if v&03 != 0 {
+				ctxt.Diag("odd branch target address\n%v", p)
+				v &^= 03
+			}
+
+			if v < -(1<<25) || v >= 1<<24 {
+				ctxt.Diag("branch too far\n%v", p)
+			}
+		}
+
+		o1 = OP_BR(opirr(ctxt, p.As), uint32(v), 0)
+		if p.To.Sym != nil {
+			rel := obj.Addrel(ctxt.Cursym)
+			rel.Off = int32(ctxt.Pc)
+			rel.Siz = 4
+			rel.Sym = p.To.Sym
+			v += int32(p.To.Offset)
+			if v&03 != 0 {
+				ctxt.Diag("odd branch target address\n%v", p)
+				v &^= 03
+			}
+
+			rel.Add = int64(v)
+			rel.Type = obj.R_CALLPOWER
+		}
+		o2 = 0x60000000 // nop, sometimes overwritten by ld r2, 24(r1) when dynamic linking
+
+	case 12: /* movb r,r (extsb); movw r,r (extsw) */
+		if p.To.Reg == REGZERO && p.From.Type == obj.TYPE_CONST {
+			v := regoff(ctxt, &p.From)
+			if r0iszero != 0 /*TypeKind(100016)*/ && v != 0 {
+				ctxt.Diag("literal operation on R0\n%v", p)
+			}
+
+			o1 = LOP_IRR(OP_ADDI, REGZERO, REGZERO, uint32(v))
+			break
+		}
+
+		if p.As == AMOVW {
+			o1 = LOP_RRR(OP_EXTSW, uint32(p.To.Reg), uint32(p.From.Reg), 0)
+		} else {
+			o1 = LOP_RRR(OP_EXTSB, uint32(p.To.Reg), uint32(p.From.Reg), 0)
+		}
+
+	case 13: /* mov[bhw]z r,r; uses rlwinm not andi. to avoid changing CC */
+		if p.As == AMOVBZ {
+			o1 = OP_RLW(OP_RLWINM, uint32(p.To.Reg), uint32(p.From.Reg), 0, 24, 31)
+		} else if p.As == AMOVH {
+			o1 = LOP_RRR(OP_EXTSH, uint32(p.To.Reg), uint32(p.From.Reg), 0)
+		} else if p.As == AMOVHZ {
+			o1 = OP_RLW(OP_RLWINM, uint32(p.To.Reg), uint32(p.From.Reg), 0, 16, 31)
+		} else if p.As == AMOVWZ {
+			o1 = OP_RLW(OP_RLDIC, uint32(p.To.Reg), uint32(p.From.Reg), 0, 0, 0) | 1<<5 /* MB=32 */
+		} else {
+			ctxt.Diag("internal: bad mov[bhw]z\n%v", p)
+		}
+
+	case 14: /* rldc[lr] Rb,Rs,$mask,Ra -- left, right give different masks */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		d := vregoff(ctxt, p.From3)
+		var a int
+		switch p.As {
+
+		// These opcodes expect a mask operand that has to be converted into the
+		// appropriate operand.  The way these were defined, not all valid masks are possible.
+		// Left here for compatibility in case they were used or generated.
+		case ARLDCL, ARLDCLCC:
+			var mask [2]uint8
+			maskgen64(ctxt, p, mask[:], uint64(d))
+
+			a = int(mask[0]) /* MB */
+			if mask[1] != 63 {
+				ctxt.Diag("invalid mask for rotate: %x (end != bit 63)\n%v", uint64(d), p)
+			}
+
+		case ARLDCR, ARLDCRCC:
+			var mask [2]uint8
+			maskgen64(ctxt, p, mask[:], uint64(d))
+
+			a = int(mask[1]) /* ME */
+			if mask[0] != 0 {
+				ctxt.Diag("invalid mask for rotate: %x (start != 0)\n%v", uint64(d), p)
+			}
+
+		// These opcodes use a shift count like the ppc64 asm, no mask conversion done
+		case ARLDICR, ARLDICRCC, ARLDICL, ARLDICLCC:
+			a = int(d)
+
+		default:
+			ctxt.Diag("unexpected op in rldc case\n%v", p)
+			a = 0
+		}
+
+		o1 = LOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(p.From.Reg))
+		o1 |= (uint32(a) & 31) << 6
+		if a&0x20 != 0 {
+			o1 |= 1 << 5 /* mb[5] is top bit */
+		}
+
+	case 17, /* bc bo,bi,lbra (same for now) */
+		16: /* bc bo,bi,sbra */
+		a := 0
+
+		r := int(p.Reg)
+
+		if p.From.Type == obj.TYPE_CONST {
+			a = int(regoff(ctxt, &p.From))
+		} else if p.From.Type == obj.TYPE_REG {
+			if r != 0 {
+				ctxt.Diag("unexpected register setting for branch with CR: %d\n", r)
+			}
+			// BI values for the CR
+			switch p.From.Reg {
+			case REG_CR0:
+				r = BI_CR0
+			case REG_CR1:
+				r = BI_CR1
+			case REG_CR2:
+				r = BI_CR2
+			case REG_CR3:
+				r = BI_CR3
+			case REG_CR4:
+				r = BI_CR4
+			case REG_CR5:
+				r = BI_CR5
+			case REG_CR6:
+				r = BI_CR6
+			case REG_CR7:
+				r = BI_CR7
+			default:
+				ctxt.Diag("unrecognized register: expecting CR\n")
+			}
+		}
+		v := int32(0)
+		if p.Pcond != nil {
+			v = int32(p.Pcond.Pc - p.Pc)
+		}
+		if v&03 != 0 {
+			ctxt.Diag("odd branch target address\n%v", p)
+			v &^= 03
+		}
+
+		if v < -(1<<16) || v >= 1<<15 {
+			ctxt.Diag("branch too far\n%v", p)
+		}
+		o1 = OP_BC(opirr(ctxt, p.As), uint32(a), uint32(r), uint32(v), 0)
+
+	case 15: /* br/bl (r) => mov r,lr; br/bl (lr) */
+		var v int32
+		if p.As == ABC || p.As == ABCL {
+			v = regoff(ctxt, &p.To) & 31
+		} else {
+			v = 20 /* unconditional */
+		}
+		o1 = AOP_RRR(OP_MTSPR, uint32(p.To.Reg), 0, 0) | (REG_LR&0x1f)<<16 | ((REG_LR>>5)&0x1f)<<11
+		o2 = OPVCC(19, 16, 0, 0)
+		if p.As == ABL || p.As == ABCL {
+			o2 |= 1
+		}
+		o2 = OP_BCR(o2, uint32(v), uint32(p.To.Index))
+
+	case 18: /* br/bl (lr/ctr); bc/bcl bo,bi,(lr/ctr) */
+		var v int32
+		if p.As == ABC || p.As == ABCL {
+			v = regoff(ctxt, &p.From) & 31
+		} else {
+			v = 20 /* unconditional */
+		}
+		r := int(p.Reg)
+		if r == 0 {
+			r = 0
+		}
+		switch oclass(&p.To) {
+		case C_CTR:
+			o1 = OPVCC(19, 528, 0, 0)
+
+		case C_LR:
+			o1 = OPVCC(19, 16, 0, 0)
+
+		default:
+			ctxt.Diag("bad optab entry (18): %d\n%v", p.To.Class, p)
+			v = 0
+		}
+
+		if p.As == ABL || p.As == ABCL {
+			o1 |= 1
+		}
+		o1 = OP_BCR(o1, uint32(v), uint32(r))
+
+	case 19: /* mov $lcon,r ==> cau+or */
+		d := vregoff(ctxt, &p.From)
+
+		if p.From.Sym == nil {
+			o1 = loadu32(int(p.To.Reg), d)
+			o2 = LOP_IRR(OP_ORI, uint32(p.To.Reg), uint32(p.To.Reg), uint32(int32(d)))
+		} else {
+			o1, o2 = symbolAccess(ctxt, p.From.Sym, d, p.To.Reg, OP_ADDI)
+		}
+
+	//if(dlm) reloc(&p->from, p->pc, 0);
+
+	case 20: /* add $ucon,,r */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		if p.As == AADD && (r0iszero == 0 /*TypeKind(100016)*/ && p.Reg == 0 || r0iszero != 0 /*TypeKind(100016)*/ && p.To.Reg == 0) {
+			ctxt.Diag("literal operation on R0\n%v", p)
+		}
+		o1 = AOP_IRR(opirr(ctxt, -p.As), uint32(p.To.Reg), uint32(r), uint32(v)>>16)
+
+	case 22: /* add $lcon,r1,r2 ==> cau+or+add */ /* could do add/sub more efficiently */
+		if p.To.Reg == REGTMP || p.Reg == REGTMP {
+			ctxt.Diag("can't synthesize large constant\n%v", p)
+		}
+		d := vregoff(ctxt, &p.From)
+		o1 = loadu32(REGTMP, d)
+		o2 = LOP_IRR(OP_ORI, REGTMP, REGTMP, uint32(int32(d)))
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o3 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), REGTMP, uint32(r))
+		if p.From.Sym != nil {
+			ctxt.Diag("%v is not supported", p)
+		}
+
+	//if(dlm) reloc(&p->from, p->pc, 0);
+
+	case 23: /* and $lcon,r1,r2 ==> cau+or+and */ /* masks could be done using rlnm etc. */
+		if p.To.Reg == REGTMP || p.Reg == REGTMP {
+			ctxt.Diag("can't synthesize large constant\n%v", p)
+		}
+		d := vregoff(ctxt, &p.From)
+		o1 = loadu32(REGTMP, d)
+		o2 = LOP_IRR(OP_ORI, REGTMP, REGTMP, uint32(int32(d)))
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o3 = LOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), REGTMP, uint32(r))
+		if p.From.Sym != nil {
+			ctxt.Diag("%v is not supported", p)
+		}
+
+		//if(dlm) reloc(&p->from, p->pc, 0);
+
+		/*24*/
+	case 25:
+		/* sld[.] $sh,rS,rA -> rldicr[.] $sh,rS,mask(0,63-sh),rA; srd[.] -> rldicl */
+		v := regoff(ctxt, &p.From)
+
+		if v < 0 {
+			v = 0
+		} else if v > 63 {
+			v = 63
+		}
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		var a int
+		switch p.As {
+		case ASLD, ASLDCC:
+			a = int(63 - v)
+			o1 = OP_RLDICR
+
+		case ASRD, ASRDCC:
+			a = int(v)
+			v = 64 - v
+			o1 = OP_RLDICL
+
+		default:
+			ctxt.Diag("unexpected op in sldi case\n%v", p)
+			a = 0
+			o1 = 0
+		}
+
+		o1 = AOP_RRR(o1, uint32(r), uint32(p.To.Reg), (uint32(v) & 0x1F))
+		o1 |= (uint32(a) & 31) << 6
+		if v&0x20 != 0 {
+			o1 |= 1 << 1
+		}
+		if a&0x20 != 0 {
+			o1 |= 1 << 5 /* mb[5] is top bit */
+		}
+		if p.As == ASLDCC || p.As == ASRDCC {
+			o1 |= 1 /* Rc */
+		}
+
+	case 26: /* mov $lsext/auto/oreg,,r2 ==> addis+addi */
+		if p.To.Reg == REGTMP {
+			ctxt.Diag("can't synthesize large constant\n%v", p)
+		}
+		v := regoff(ctxt, &p.From)
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = AOP_IRR(OP_ADDIS, REGTMP, uint32(r), uint32(high16adjusted(v)))
+		o2 = AOP_IRR(OP_ADDI, uint32(p.To.Reg), REGTMP, uint32(v))
+
+	case 27: /* subc ra,$simm,rd => subfic rd,ra,$simm */
+		v := regoff(ctxt, p.From3)
+
+		r := int(p.From.Reg)
+		o1 = AOP_IRR(opirr(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(v))
+
+	case 28: /* subc r1,$lcon,r2 ==> cau+or+subfc */
+		if p.To.Reg == REGTMP || p.From.Reg == REGTMP {
+			ctxt.Diag("can't synthesize large constant\n%v", p)
+		}
+		v := regoff(ctxt, p.From3)
+		o1 = AOP_IRR(OP_ADDIS, REGTMP, REGZERO, uint32(v)>>16)
+		o2 = LOP_IRR(OP_ORI, REGTMP, REGTMP, uint32(v))
+		o3 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), REGTMP)
+		if p.From.Sym != nil {
+			ctxt.Diag("%v is not supported", p)
+		}
+
+	//if(dlm) reloc(&p->from3, p->pc, 0);
+
+	case 29: /* rldic[lr]? $sh,s,$mask,a -- left, right, plain give different masks */
+		v := regoff(ctxt, &p.From)
+
+		d := vregoff(ctxt, p.From3)
+		var mask [2]uint8
+		maskgen64(ctxt, p, mask[:], uint64(d))
+		var a int
+		switch p.As {
+		case ARLDC, ARLDCCC:
+			a = int(mask[0]) /* MB */
+			if int32(mask[1]) != (63 - v) {
+				ctxt.Diag("invalid mask for shift: %x (shift %d)\n%v", uint64(d), v, p)
+			}
+
+		case ARLDCL, ARLDCLCC:
+			a = int(mask[0]) /* MB */
+			if mask[1] != 63 {
+				ctxt.Diag("invalid mask for shift: %x (shift %d)\n%v", uint64(d), v, p)
+			}
+
+		case ARLDCR, ARLDCRCC:
+			a = int(mask[1]) /* ME */
+			if mask[0] != 0 {
+				ctxt.Diag("invalid mask for shift: %x (shift %d)\n%v", uint64(d), v, p)
+			}
+
+		default:
+			ctxt.Diag("unexpected op in rldic case\n%v", p)
+			a = 0
+		}
+
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.Reg), uint32(p.To.Reg), (uint32(v) & 0x1F))
+		o1 |= (uint32(a) & 31) << 6
+		if v&0x20 != 0 {
+			o1 |= 1 << 1
+		}
+		if a&0x20 != 0 {
+			o1 |= 1 << 5 /* mb[5] is top bit */
+		}
+
+	case 30: /* rldimi $sh,s,$mask,a */
+		v := regoff(ctxt, &p.From)
+
+		d := vregoff(ctxt, p.From3)
+
+		// Original opcodes had mask operands which had to be converted to a shift count as expected by
+		// the ppc64 asm.
+		switch p.As {
+		case ARLDMI, ARLDMICC:
+			var mask [2]uint8
+			maskgen64(ctxt, p, mask[:], uint64(d))
+			if int32(mask[1]) != (63 - v) {
+				ctxt.Diag("invalid mask for shift: %x (shift %d)\n%v", uint64(d), v, p)
+			}
+			o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.Reg), uint32(p.To.Reg), (uint32(v) & 0x1F))
+			o1 |= (uint32(mask[0]) & 31) << 6
+			if v&0x20 != 0 {
+				o1 |= 1 << 1
+			}
+			if mask[0]&0x20 != 0 {
+				o1 |= 1 << 5 /* mb[5] is top bit */
+			}
+
+		// Opcodes with shift count operands.
+		case ARLDIMI, ARLDIMICC:
+			o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.Reg), uint32(p.To.Reg), (uint32(v) & 0x1F))
+			o1 |= (uint32(d) & 31) << 6
+			if v&0x20 != 0 {
+				o1 |= 1 << 1
+			}
+		}
+
+	case 31: /* dword */
+		d := vregoff(ctxt, &p.From)
+
+		if ctxt.Arch.ByteOrder == binary.BigEndian {
+			o1 = uint32(d >> 32)
+			o2 = uint32(d)
+		} else {
+			o1 = uint32(d)
+			o2 = uint32(d >> 32)
+		}
+
+		if p.From.Sym != nil {
+			rel := obj.Addrel(ctxt.Cursym)
+			rel.Off = int32(ctxt.Pc)
+			rel.Siz = 8
+			rel.Sym = p.From.Sym
+			rel.Add = p.From.Offset
+			rel.Type = obj.R_ADDR
+			o2 = 0
+			o1 = o2
+		}
+
+	case 32: /* fmul frc,fra,frd */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(r), 0) | (uint32(p.From.Reg)&31)<<6
+
+	case 33: /* fabs [frb,]frd; fmr. frb,frd */
+		r := int(p.From.Reg)
+
+		if oclass(&p.From) == C_NONE {
+			r = int(p.To.Reg)
+		}
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), 0, uint32(r))
+
+	case 34: /* FMADDx fra,frb,frc,frd (d=a*b+c); FSELx a<0? (d=b): (d=c) */
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg)) | (uint32(p.From3.Reg)&31)<<6
+
+	case 35: /* mov r,lext/lauto/loreg ==> cau $(v>>16),sb,r'; store o(r') */
+		v := regoff(ctxt, &p.To)
+
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = AOP_IRR(OP_ADDIS, REGTMP, uint32(r), uint32(high16adjusted(v)))
+		o2 = AOP_IRR(opstore(ctxt, p.As), uint32(p.From.Reg), REGTMP, uint32(v))
+
+	case 36: /* mov bz/h/hz lext/lauto/lreg,r ==> lbz/lha/lhz etc */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = AOP_IRR(OP_ADDIS, REGTMP, uint32(r), uint32(high16adjusted(v)))
+		o2 = AOP_IRR(opload(ctxt, p.As), uint32(p.To.Reg), REGTMP, uint32(v))
+
+	case 37: /* movb lext/lauto/lreg,r ==> lbz o(reg),r; extsb r */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.From.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		o1 = AOP_IRR(OP_ADDIS, REGTMP, uint32(r), uint32(high16adjusted(v)))
+		o2 = AOP_IRR(opload(ctxt, p.As), uint32(p.To.Reg), REGTMP, uint32(v))
+		o3 = LOP_RRR(OP_EXTSB, uint32(p.To.Reg), uint32(p.To.Reg), 0)
+
+	case 40: /* word */
+		o1 = uint32(regoff(ctxt, &p.From))
+
+	case 41: /* stswi */
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Reg), 0) | (uint32(regoff(ctxt, p.From3))&0x7F)<<11
+
+	case 42: /* lswi */
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), 0) | (uint32(regoff(ctxt, p.From3))&0x7F)<<11
+
+	case 43: /* unary indexed source: dcbf (b); dcbf (a+b) */
+		o1 = AOP_RRR(oprrr(ctxt, p.As), 0, uint32(p.From.Index), uint32(p.From.Reg))
+
+	case 44: /* indexed store */
+		o1 = AOP_RRR(opstorex(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Index), uint32(p.To.Reg))
+
+	case 45: /* indexed load */
+		o1 = AOP_RRR(oploadx(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Index), uint32(p.From.Reg))
+
+	case 46: /* plain op */
+		o1 = oprrr(ctxt, p.As)
+
+	case 47: /* op Ra, Rd; also op [Ra,] Rd */
+		r := int(p.From.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(r), 0)
+
+	case 48: /* op Rs, Ra */
+		r := int(p.From.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = LOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(r), 0)
+
+	case 49: /* op Rb; op $n, Rb */
+		if p.From.Type != obj.TYPE_REG { /* tlbie $L, rB */
+			v := regoff(ctxt, &p.From) & 1
+			o1 = AOP_RRR(oprrr(ctxt, p.As), 0, 0, uint32(p.To.Reg)) | uint32(v)<<21
+		} else {
+			o1 = AOP_RRR(oprrr(ctxt, p.As), 0, 0, uint32(p.From.Reg))
+		}
+
+	case 50: /* rem[u] r1[,r2],r3 */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		v := oprrr(ctxt, p.As)
+		t := v & (1<<10 | 1) /* OE|Rc */
+		o1 = AOP_RRR(v&^t, REGTMP, uint32(r), uint32(p.From.Reg))
+		o2 = AOP_RRR(OP_MULLW, REGTMP, REGTMP, uint32(p.From.Reg))
+		o3 = AOP_RRR(OP_SUBF|t, uint32(p.To.Reg), REGTMP, uint32(r))
+		if p.As == AREMU {
+			o4 = o3
+
+			/* Clear top 32 bits */
+			o3 = OP_RLW(OP_RLDIC, REGTMP, REGTMP, 0, 0, 0) | 1<<5
+		}
+
+	case 51: /* remd[u] r1[,r2],r3 */
+		r := int(p.Reg)
+
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		v := oprrr(ctxt, p.As)
+		t := v & (1<<10 | 1) /* OE|Rc */
+		o1 = AOP_RRR(v&^t, REGTMP, uint32(r), uint32(p.From.Reg))
+		o2 = AOP_RRR(OP_MULLD, REGTMP, REGTMP, uint32(p.From.Reg))
+		o3 = AOP_RRR(OP_SUBF|t, uint32(p.To.Reg), REGTMP, uint32(r))
+
+	case 52: /* mtfsbNx cr(n) */
+		v := regoff(ctxt, &p.From) & 31
+
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(v), 0, 0)
+
+	case 53: /* mffsX ,fr1 */
+		o1 = AOP_RRR(OP_MFFS, uint32(p.To.Reg), 0, 0)
+
+	case 54: /* mov msr,r1; mov r1, msr*/
+		if oclass(&p.From) == C_REG {
+			if p.As == AMOVD {
+				o1 = AOP_RRR(OP_MTMSRD, uint32(p.From.Reg), 0, 0)
+			} else {
+				o1 = AOP_RRR(OP_MTMSR, uint32(p.From.Reg), 0, 0)
+			}
+		} else {
+			o1 = AOP_RRR(OP_MFMSR, uint32(p.To.Reg), 0, 0)
+		}
+
+	case 55: /* op Rb, Rd */
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), 0, uint32(p.From.Reg))
+
+	case 56: /* sra $sh,[s,]a; srd $sh,[s,]a */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(r), uint32(p.To.Reg), uint32(v)&31)
+		if (p.As == ASRAD || p.As == ASRADCC) && (v&0x20 != 0) {
+			o1 |= 1 << 1 /* mb[5] */
+		}
+
+	case 57: /* slw $sh,[s,]a -> rlwinm ... */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+
+		/*
+			 * Let user (gs) shoot himself in the foot.
+			 * qc has already complained.
+			 *
+			if(v < 0 || v > 31)
+				ctxt->diag("illegal shift %ld\n%v", v, p);
+		*/
+		if v < 0 {
+			v = 0
+		} else if v > 32 {
+			v = 32
+		}
+		var mask [2]uint8
+		if p.As == ASRW || p.As == ASRWCC { /* shift right */
+			mask[0] = uint8(v)
+			mask[1] = 31
+			v = 32 - v
+		} else {
+			mask[0] = 0
+			mask[1] = uint8(31 - v)
+		}
+
+		o1 = OP_RLW(OP_RLWINM, uint32(p.To.Reg), uint32(r), uint32(v), uint32(mask[0]), uint32(mask[1]))
+		if p.As == ASLWCC || p.As == ASRWCC {
+			o1 |= 1 /* Rc */
+		}
+
+	case 58: /* logical $andcon,[s],a */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = LOP_IRR(opirr(ctxt, p.As), uint32(p.To.Reg), uint32(r), uint32(v))
+
+	case 59: /* or/and $ucon,,r */
+		v := regoff(ctxt, &p.From)
+
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+		o1 = LOP_IRR(opirr(ctxt, -p.As), uint32(p.To.Reg), uint32(r), uint32(v)>>16) /* oris, xoris, andis */
+
+	case 60: /* tw to,a,b */
+		r := int(regoff(ctxt, &p.From) & 31)
+
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(r), uint32(p.Reg), uint32(p.To.Reg))
+
+	case 61: /* tw to,a,$simm */
+		r := int(regoff(ctxt, &p.From) & 31)
+
+		v := regoff(ctxt, &p.To)
+		o1 = AOP_IRR(opirr(ctxt, p.As), uint32(r), uint32(p.Reg), uint32(v))
+
+	case 62: /* rlwmi $sh,s,$mask,a */
+		v := regoff(ctxt, &p.From)
+
+		var mask [2]uint8
+		maskgen(ctxt, p, mask[:], uint32(regoff(ctxt, p.From3)))
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.Reg), uint32(p.To.Reg), uint32(v))
+		o1 |= (uint32(mask[0])&31)<<6 | (uint32(mask[1])&31)<<1
+
+	case 63: /* rlwmi b,s,$mask,a */
+		var mask [2]uint8
+		maskgen(ctxt, p, mask[:], uint32(regoff(ctxt, p.From3)))
+
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(p.Reg), uint32(p.To.Reg), uint32(p.From.Reg))
+		o1 |= (uint32(mask[0])&31)<<6 | (uint32(mask[1])&31)<<1
+
+	case 64: /* mtfsf fr[, $m] {,fpcsr} */
+		var v int32
+		if p.From3Type() != obj.TYPE_NONE {
+			v = regoff(ctxt, p.From3) & 255
+		} else {
+			v = 255
+		}
+		o1 = OP_MTFSF | uint32(v)<<17 | uint32(p.From.Reg)<<11
+
+	case 65: /* MOVFL $imm,FPSCR(n) => mtfsfi crfd,imm */
+		if p.To.Reg == 0 {
+			ctxt.Diag("must specify FPSCR(n)\n%v", p)
+		}
+		o1 = OP_MTFSFI | (uint32(p.To.Reg)&15)<<23 | (uint32(regoff(ctxt, &p.From))&31)<<12
+
+	case 66: /* mov spr,r1; mov r1,spr, also dcr */
+		var r int
+		var v int32
+		if REG_R0 <= p.From.Reg && p.From.Reg <= REG_R31 {
+			r = int(p.From.Reg)
+			v = int32(p.To.Reg)
+			if REG_DCR0 <= v && v <= REG_DCR0+1023 {
+				o1 = OPVCC(31, 451, 0, 0) /* mtdcr */
+			} else {
+				o1 = OPVCC(31, 467, 0, 0) /* mtspr */
+			}
+		} else {
+			r = int(p.To.Reg)
+			v = int32(p.From.Reg)
+			if REG_DCR0 <= v && v <= REG_DCR0+1023 {
+				o1 = OPVCC(31, 323, 0, 0) /* mfdcr */
+			} else {
+				o1 = OPVCC(31, 339, 0, 0) /* mfspr */
+			}
+		}
+
+		o1 = AOP_RRR(o1, uint32(r), 0, 0) | (uint32(v)&0x1f)<<16 | ((uint32(v)>>5)&0x1f)<<11
+
+	case 67: /* mcrf crfD,crfS */
+		if p.From.Type != obj.TYPE_REG || p.From.Reg < REG_CR0 || REG_CR7 < p.From.Reg || p.To.Type != obj.TYPE_REG || p.To.Reg < REG_CR0 || REG_CR7 < p.To.Reg {
+			ctxt.Diag("illegal CR field number\n%v", p)
+		}
+		o1 = AOP_RRR(OP_MCRF, ((uint32(p.To.Reg) & 7) << 2), ((uint32(p.From.Reg) & 7) << 2), 0)
+
+	case 68: /* mfcr rD; mfocrf CRM,rD */
+		if p.From.Type == obj.TYPE_REG && REG_CR0 <= p.From.Reg && p.From.Reg <= REG_CR7 {
+			v := int32(1 << uint(7-(p.To.Reg&7)))                                 /* CR(n) */
+			o1 = AOP_RRR(OP_MFCR, uint32(p.To.Reg), 0, 0) | 1<<20 | uint32(v)<<12 /* new form, mfocrf */
+		} else {
+			o1 = AOP_RRR(OP_MFCR, uint32(p.To.Reg), 0, 0) /* old form, whole register */
+		}
+
+	case 69: /* mtcrf CRM,rS */
+		var v int32
+		if p.From3Type() != obj.TYPE_NONE {
+			if p.To.Reg != 0 {
+				ctxt.Diag("can't use both mask and CR(n)\n%v", p)
+			}
+			v = regoff(ctxt, p.From3) & 0xff
+		} else {
+			if p.To.Reg == 0 {
+				v = 0xff /* CR */
+			} else {
+				v = 1 << uint(7-(p.To.Reg&7)) /* CR(n) */
+			}
+		}
+
+		o1 = AOP_RRR(OP_MTCRF, uint32(p.From.Reg), 0, 0) | uint32(v)<<12
+
+	case 70: /* [f]cmp r,r,cr*/
+		var r int
+		if p.Reg == 0 {
+			r = 0
+		} else {
+			r = (int(p.Reg) & 7) << 2
+		}
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(r), uint32(p.From.Reg), uint32(p.To.Reg))
+
+	case 71: /* cmp[l] r,i,cr*/
+		var r int
+		if p.Reg == 0 {
+			r = 0
+		} else {
+			r = (int(p.Reg) & 7) << 2
+		}
+		o1 = AOP_RRR(opirr(ctxt, p.As), uint32(r), uint32(p.From.Reg), 0) | uint32(regoff(ctxt, &p.To))&0xffff
+
+	case 72: /* slbmte (Rb+Rs -> slb[Rb]) -> Rs, Rb */
+		o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), 0, uint32(p.To.Reg))
+
+	case 73: /* mcrfs crfD,crfS */
+		if p.From.Type != obj.TYPE_REG || p.From.Reg != REG_FPSCR || p.To.Type != obj.TYPE_REG || p.To.Reg < REG_CR0 || REG_CR7 < p.To.Reg {
+			ctxt.Diag("illegal FPSCR/CR field number\n%v", p)
+		}
+		o1 = AOP_RRR(OP_MCRFS, ((uint32(p.To.Reg) & 7) << 2), ((0 & 7) << 2), 0)
+
+	case 77: /* syscall $scon, syscall Rx */
+		if p.From.Type == obj.TYPE_CONST {
+			if p.From.Offset > BIG || p.From.Offset < -BIG {
+				ctxt.Diag("illegal syscall, sysnum too large: %v", p)
+			}
+			o1 = AOP_IRR(OP_ADDI, REGZERO, REGZERO, uint32(p.From.Offset))
+		} else if p.From.Type == obj.TYPE_REG {
+			o1 = LOP_RRR(OP_OR, REGZERO, uint32(p.From.Reg), uint32(p.From.Reg))
+		} else {
+			ctxt.Diag("illegal syscall: %v", p)
+			o1 = 0x7fe00008 // trap always
+		}
+
+		o2 = oprrr(ctxt, p.As)
+		o3 = AOP_RRR(oprrr(ctxt, AXOR), REGZERO, REGZERO, REGZERO) // XOR R0, R0
+
+	case 78: /* undef */
+		o1 = 0 /* "An instruction consisting entirely of binary 0s is guaranteed
+		   always to be an illegal instruction."  */
+
+	/* relocation operations */
+	case 74:
+		v := vregoff(ctxt, &p.To)
+		o1, o2 = symbolAccess(ctxt, p.To.Sym, v, p.From.Reg, opstore(ctxt, p.As))
+
+	//if(dlm) reloc(&p->to, p->pc, 1);
+
+	case 75:
+		v := vregoff(ctxt, &p.From)
+		o1, o2 = symbolAccess(ctxt, p.From.Sym, v, p.To.Reg, opload(ctxt, p.As))
+
+	//if(dlm) reloc(&p->from, p->pc, 1);
+
+	case 76:
+		v := vregoff(ctxt, &p.From)
+		o1, o2 = symbolAccess(ctxt, p.From.Sym, v, p.To.Reg, opload(ctxt, p.As))
+		o3 = LOP_RRR(OP_EXTSB, uint32(p.To.Reg), uint32(p.To.Reg), 0)
+
+		//if(dlm) reloc(&p->from, p->pc, 1);
+
+	case 79:
+		if p.From.Offset != 0 {
+			ctxt.Diag("invalid offset against tls var %v", p)
+		}
+		o1 = AOP_IRR(OP_ADDI, uint32(p.To.Reg), REGZERO, 0)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Type = obj.R_POWER_TLS_LE
+
+	case 80:
+		if p.From.Offset != 0 {
+			ctxt.Diag("invalid offset against tls var %v", p)
+		}
+		o1 = AOP_IRR(OP_ADDIS, uint32(p.To.Reg), REG_R2, 0)
+		o2 = AOP_IRR(opload(ctxt, AMOVD), uint32(p.To.Reg), uint32(p.To.Reg), 0)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Type = obj.R_POWER_TLS_IE
+
+	case 81:
+		v := vregoff(ctxt, &p.To)
+		if v != 0 {
+			ctxt.Diag("invalid offset against GOT slot %v", p)
+		}
+
+		o1 = AOP_IRR(OP_ADDIS, uint32(p.To.Reg), REG_R2, 0)
+		o2 = AOP_IRR(opload(ctxt, AMOVD), uint32(p.To.Reg), uint32(p.To.Reg), 0)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Type = obj.R_ADDRPOWER_GOT
+	case 82: /* vector instructions, VX-form and VC-form */
+		if p.From.Type == obj.TYPE_REG {
+			/* reg reg none OR reg reg reg */
+			/* 3-register operand order: VRA, VRB, VRT */
+			/* 2-register operand order: VRA, VRT */
+			o1 = AOP_RRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg))
+		} else if p.From3Type() == obj.TYPE_CONST {
+			/* imm imm reg reg */
+			/* operand order: SIX, VRA, ST, VRT */
+			six := int(regoff(ctxt, &p.From))
+			st := int(regoff(ctxt, p.From3))
+			o1 = AOP_IIRR(opiirr(ctxt, p.As), uint32(p.To.Reg), uint32(p.Reg), uint32(st), uint32(six))
+		} else if p.From3Type() == obj.TYPE_NONE && p.Reg != 0 {
+			/* imm reg reg */
+			/* operand order: UIM, VRB, VRT */
+			uim := int(regoff(ctxt, &p.From))
+			o1 = AOP_VIRR(opirr(ctxt, p.As), uint32(p.To.Reg), uint32(p.Reg), uint32(uim))
+		} else {
+			/* imm reg */
+			/* operand order: SIM, VRT */
+			sim := int(regoff(ctxt, &p.From))
+			o1 = AOP_IR(opirr(ctxt, p.As), uint32(p.To.Reg), uint32(sim))
+		}
+
+	case 83: /* vector instructions, VA-form */
+		if p.From.Type == obj.TYPE_REG {
+			/* reg reg reg reg */
+			/* 4-register operand order: VRA, VRB, VRC, VRT */
+			o1 = AOP_RRRR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), uint32(p.From3.Reg))
+		} else if p.From.Type == obj.TYPE_CONST {
+			/* imm reg reg reg */
+			/* operand order: SHB, VRA, VRB, VRT */
+			shb := int(regoff(ctxt, &p.From))
+			o1 = AOP_IRRR(opirrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.Reg), uint32(p.From3.Reg), uint32(shb))
+		}
+
+	case 84: // ISEL BC,RA,RB,RT -> isel rt,ra,rb,bc
+		bc := vregoff(ctxt, &p.From)
+
+		// rt = To.Reg, ra = p.Reg, rb = p.From3.Reg
+		o1 = AOP_ISEL(OP_ISEL, uint32(p.To.Reg), uint32(p.Reg), uint32(p.From3.Reg), uint32(bc))
+
+	case 85: /* vector instructions, VX-form */
+		/* reg none reg */
+		/* 2-register operand order: VRB, VRT */
+		o1 = AOP_RR(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg))
+
+	case 86: /* VSX indexed store, XX1-form */
+		/* reg reg reg */
+		/* 3-register operand order: XT, (RB)(RA*1) */
+		o1 = AOP_XX1(opstorex(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Index), uint32(p.To.Reg))
+
+	case 87: /* VSX indexed load, XX1-form */
+		/* reg reg reg */
+		/* 3-register operand order: (RB)(RA*1), XT */
+		o1 = AOP_XX1(oploadx(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Index), uint32(p.From.Reg))
+
+	case 88: /* VSX instructions, XX1-form */
+		/* reg reg none OR reg reg reg */
+		/* 3-register operand order: RA, RB, XT */
+		/* 2-register operand order: XS, RA or RA, XT */
+		xt := int32(p.To.Reg)
+		xs := int32(p.From.Reg)
+		if REG_VS0 <= xt && xt <= REG_VS63 {
+			o1 = AOP_XX1(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg))
+		} else if REG_VS0 <= xs && xs <= REG_VS63 {
+			o1 = AOP_XX1(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Reg), uint32(p.Reg))
+		}
+
+	case 89: /* VSX instructions, XX2-form */
+		/* reg none reg OR reg imm reg */
+		/* 2-register operand order: XB, XT or XB, UIM, XT*/
+		uim := int(regoff(ctxt, p.From3))
+		o1 = AOP_XX2(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(uim), uint32(p.From.Reg))
+
+	case 90: /* VSX instructions, XX3-form */
+		if p.From3Type() == obj.TYPE_NONE {
+			/* reg reg reg */
+			/* 3-register operand order: XA, XB, XT */
+			o1 = AOP_XX3(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg))
+		} else if p.From3Type() == obj.TYPE_CONST {
+			/* reg reg reg imm */
+			/* operand order: XA, XB, DM, XT */
+			dm := int(regoff(ctxt, p.From3))
+			o1 = AOP_XX3I(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), uint32(dm))
+		}
+
+	case 91: /* VSX instructions, XX4-form */
+		/* reg reg reg reg */
+		/* 3-register operand order: XA, XB, XC, XT */
+		o1 = AOP_XX4(oprrr(ctxt, p.As), uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), uint32(p.From3.Reg))
+
+	}
+
+	out[0] = o1
+	out[1] = o2
+	out[2] = o3
+	out[3] = o4
+	out[4] = o5
+	return
+}
+
+func vregoff(ctxt *obj.Link, a *obj.Addr) int64 {
+	ctxt.Instoffset = 0
+	if a != nil {
+		aclass(ctxt, a)
+	}
+	return ctxt.Instoffset
+}
+
+func regoff(ctxt *obj.Link, a *obj.Addr) int32 {
+	return int32(vregoff(ctxt, a))
+}
+
+func oprrr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AADD:
+		return OPVCC(31, 266, 0, 0)
+	case AADDCC:
+		return OPVCC(31, 266, 0, 1)
+	case AADDV:
+		return OPVCC(31, 266, 1, 0)
+	case AADDVCC:
+		return OPVCC(31, 266, 1, 1)
+	case AADDC:
+		return OPVCC(31, 10, 0, 0)
+	case AADDCCC:
+		return OPVCC(31, 10, 0, 1)
+	case AADDCV:
+		return OPVCC(31, 10, 1, 0)
+	case AADDCVCC:
+		return OPVCC(31, 10, 1, 1)
+	case AADDE:
+		return OPVCC(31, 138, 0, 0)
+	case AADDECC:
+		return OPVCC(31, 138, 0, 1)
+	case AADDEV:
+		return OPVCC(31, 138, 1, 0)
+	case AADDEVCC:
+		return OPVCC(31, 138, 1, 1)
+	case AADDME:
+		return OPVCC(31, 234, 0, 0)
+	case AADDMECC:
+		return OPVCC(31, 234, 0, 1)
+	case AADDMEV:
+		return OPVCC(31, 234, 1, 0)
+	case AADDMEVCC:
+		return OPVCC(31, 234, 1, 1)
+	case AADDZE:
+		return OPVCC(31, 202, 0, 0)
+	case AADDZECC:
+		return OPVCC(31, 202, 0, 1)
+	case AADDZEV:
+		return OPVCC(31, 202, 1, 0)
+	case AADDZEVCC:
+		return OPVCC(31, 202, 1, 1)
+
+	case AAND:
+		return OPVCC(31, 28, 0, 0)
+	case AANDCC:
+		return OPVCC(31, 28, 0, 1)
+	case AANDN:
+		return OPVCC(31, 60, 0, 0)
+	case AANDNCC:
+		return OPVCC(31, 60, 0, 1)
+
+	case ACMP:
+		return OPVCC(31, 0, 0, 0) | 1<<21 /* L=1 */
+	case ACMPU:
+		return OPVCC(31, 32, 0, 0) | 1<<21
+	case ACMPW:
+		return OPVCC(31, 0, 0, 0) /* L=0 */
+	case ACMPWU:
+		return OPVCC(31, 32, 0, 0)
+
+	case ACNTLZW:
+		return OPVCC(31, 26, 0, 0)
+	case ACNTLZWCC:
+		return OPVCC(31, 26, 0, 1)
+	case ACNTLZD:
+		return OPVCC(31, 58, 0, 0)
+	case ACNTLZDCC:
+		return OPVCC(31, 58, 0, 1)
+
+	case ACRAND:
+		return OPVCC(19, 257, 0, 0)
+	case ACRANDN:
+		return OPVCC(19, 129, 0, 0)
+	case ACREQV:
+		return OPVCC(19, 289, 0, 0)
+	case ACRNAND:
+		return OPVCC(19, 225, 0, 0)
+	case ACRNOR:
+		return OPVCC(19, 33, 0, 0)
+	case ACROR:
+		return OPVCC(19, 449, 0, 0)
+	case ACRORN:
+		return OPVCC(19, 417, 0, 0)
+	case ACRXOR:
+		return OPVCC(19, 193, 0, 0)
+
+	case ADCBF:
+		return OPVCC(31, 86, 0, 0)
+	case ADCBI:
+		return OPVCC(31, 470, 0, 0)
+	case ADCBST:
+		return OPVCC(31, 54, 0, 0)
+	case ADCBT:
+		return OPVCC(31, 278, 0, 0)
+	case ADCBTST:
+		return OPVCC(31, 246, 0, 0)
+	case ADCBZ:
+		return OPVCC(31, 1014, 0, 0)
+
+	case AREM, ADIVW:
+		return OPVCC(31, 491, 0, 0)
+
+	case AREMCC, ADIVWCC:
+		return OPVCC(31, 491, 0, 1)
+
+	case AREMV, ADIVWV:
+		return OPVCC(31, 491, 1, 0)
+
+	case AREMVCC, ADIVWVCC:
+		return OPVCC(31, 491, 1, 1)
+
+	case AREMU, ADIVWU:
+		return OPVCC(31, 459, 0, 0)
+
+	case AREMUCC, ADIVWUCC:
+		return OPVCC(31, 459, 0, 1)
+
+	case AREMUV, ADIVWUV:
+		return OPVCC(31, 459, 1, 0)
+
+	case AREMUVCC, ADIVWUVCC:
+		return OPVCC(31, 459, 1, 1)
+
+	case AREMD, ADIVD:
+		return OPVCC(31, 489, 0, 0)
+
+	case AREMDCC, ADIVDCC:
+		return OPVCC(31, 489, 0, 1)
+
+	case ADIVDE:
+		return OPVCC(31, 425, 0, 0)
+
+	case ADIVDECC:
+		return OPVCC(31, 425, 0, 1)
+
+	case ADIVDEU:
+		return OPVCC(31, 393, 0, 0)
+
+	case ADIVDEUCC:
+		return OPVCC(31, 393, 0, 1)
+
+	case AREMDV, ADIVDV:
+		return OPVCC(31, 489, 1, 0)
+
+	case AREMDVCC, ADIVDVCC:
+		return OPVCC(31, 489, 1, 1)
+
+	case AREMDU, ADIVDU:
+		return OPVCC(31, 457, 0, 0)
+
+	case AREMDUCC, ADIVDUCC:
+		return OPVCC(31, 457, 0, 1)
+
+	case AREMDUV, ADIVDUV:
+		return OPVCC(31, 457, 1, 0)
+
+	case AREMDUVCC, ADIVDUVCC:
+		return OPVCC(31, 457, 1, 1)
+
+	case AEIEIO:
+		return OPVCC(31, 854, 0, 0)
+
+	case AEQV:
+		return OPVCC(31, 284, 0, 0)
+	case AEQVCC:
+		return OPVCC(31, 284, 0, 1)
+
+	case AEXTSB:
+		return OPVCC(31, 954, 0, 0)
+	case AEXTSBCC:
+		return OPVCC(31, 954, 0, 1)
+	case AEXTSH:
+		return OPVCC(31, 922, 0, 0)
+	case AEXTSHCC:
+		return OPVCC(31, 922, 0, 1)
+	case AEXTSW:
+		return OPVCC(31, 986, 0, 0)
+	case AEXTSWCC:
+		return OPVCC(31, 986, 0, 1)
+
+	case AFABS:
+		return OPVCC(63, 264, 0, 0)
+	case AFABSCC:
+		return OPVCC(63, 264, 0, 1)
+	case AFADD:
+		return OPVCC(63, 21, 0, 0)
+	case AFADDCC:
+		return OPVCC(63, 21, 0, 1)
+	case AFADDS:
+		return OPVCC(59, 21, 0, 0)
+	case AFADDSCC:
+		return OPVCC(59, 21, 0, 1)
+	case AFCMPO:
+		return OPVCC(63, 32, 0, 0)
+	case AFCMPU:
+		return OPVCC(63, 0, 0, 0)
+	case AFCFID:
+		return OPVCC(63, 846, 0, 0)
+	case AFCFIDCC:
+		return OPVCC(63, 846, 0, 1)
+	case AFCFIDU:
+		return OPVCC(63, 974, 0, 0)
+	case AFCFIDUCC:
+		return OPVCC(63, 974, 0, 1)
+	case AFCTIW:
+		return OPVCC(63, 14, 0, 0)
+	case AFCTIWCC:
+		return OPVCC(63, 14, 0, 1)
+	case AFCTIWZ:
+		return OPVCC(63, 15, 0, 0)
+	case AFCTIWZCC:
+		return OPVCC(63, 15, 0, 1)
+	case AFCTID:
+		return OPVCC(63, 814, 0, 0)
+	case AFCTIDCC:
+		return OPVCC(63, 814, 0, 1)
+	case AFCTIDZ:
+		return OPVCC(63, 815, 0, 0)
+	case AFCTIDZCC:
+		return OPVCC(63, 815, 0, 1)
+	case AFDIV:
+		return OPVCC(63, 18, 0, 0)
+	case AFDIVCC:
+		return OPVCC(63, 18, 0, 1)
+	case AFDIVS:
+		return OPVCC(59, 18, 0, 0)
+	case AFDIVSCC:
+		return OPVCC(59, 18, 0, 1)
+	case AFMADD:
+		return OPVCC(63, 29, 0, 0)
+	case AFMADDCC:
+		return OPVCC(63, 29, 0, 1)
+	case AFMADDS:
+		return OPVCC(59, 29, 0, 0)
+	case AFMADDSCC:
+		return OPVCC(59, 29, 0, 1)
+
+	case AFMOVS, AFMOVD:
+		return OPVCC(63, 72, 0, 0) /* load */
+	case AFMOVDCC:
+		return OPVCC(63, 72, 0, 1)
+	case AFMSUB:
+		return OPVCC(63, 28, 0, 0)
+	case AFMSUBCC:
+		return OPVCC(63, 28, 0, 1)
+	case AFMSUBS:
+		return OPVCC(59, 28, 0, 0)
+	case AFMSUBSCC:
+		return OPVCC(59, 28, 0, 1)
+	case AFMUL:
+		return OPVCC(63, 25, 0, 0)
+	case AFMULCC:
+		return OPVCC(63, 25, 0, 1)
+	case AFMULS:
+		return OPVCC(59, 25, 0, 0)
+	case AFMULSCC:
+		return OPVCC(59, 25, 0, 1)
+	case AFNABS:
+		return OPVCC(63, 136, 0, 0)
+	case AFNABSCC:
+		return OPVCC(63, 136, 0, 1)
+	case AFNEG:
+		return OPVCC(63, 40, 0, 0)
+	case AFNEGCC:
+		return OPVCC(63, 40, 0, 1)
+	case AFNMADD:
+		return OPVCC(63, 31, 0, 0)
+	case AFNMADDCC:
+		return OPVCC(63, 31, 0, 1)
+	case AFNMADDS:
+		return OPVCC(59, 31, 0, 0)
+	case AFNMADDSCC:
+		return OPVCC(59, 31, 0, 1)
+	case AFNMSUB:
+		return OPVCC(63, 30, 0, 0)
+	case AFNMSUBCC:
+		return OPVCC(63, 30, 0, 1)
+	case AFNMSUBS:
+		return OPVCC(59, 30, 0, 0)
+	case AFNMSUBSCC:
+		return OPVCC(59, 30, 0, 1)
+	case AFRES:
+		return OPVCC(59, 24, 0, 0)
+	case AFRESCC:
+		return OPVCC(59, 24, 0, 1)
+	case AFRIM:
+		return OPVCC(63, 488, 0, 0)
+	case AFRIMCC:
+		return OPVCC(63, 488, 0, 1)
+	case AFRIP:
+		return OPVCC(63, 456, 0, 0)
+	case AFRIPCC:
+		return OPVCC(63, 456, 0, 1)
+	case AFRIZ:
+		return OPVCC(63, 424, 0, 0)
+	case AFRIZCC:
+		return OPVCC(63, 424, 0, 1)
+	case AFRSP:
+		return OPVCC(63, 12, 0, 0)
+	case AFRSPCC:
+		return OPVCC(63, 12, 0, 1)
+	case AFRSQRTE:
+		return OPVCC(63, 26, 0, 0)
+	case AFRSQRTECC:
+		return OPVCC(63, 26, 0, 1)
+	case AFSEL:
+		return OPVCC(63, 23, 0, 0)
+	case AFSELCC:
+		return OPVCC(63, 23, 0, 1)
+	case AFSQRT:
+		return OPVCC(63, 22, 0, 0)
+	case AFSQRTCC:
+		return OPVCC(63, 22, 0, 1)
+	case AFSQRTS:
+		return OPVCC(59, 22, 0, 0)
+	case AFSQRTSCC:
+		return OPVCC(59, 22, 0, 1)
+	case AFSUB:
+		return OPVCC(63, 20, 0, 0)
+	case AFSUBCC:
+		return OPVCC(63, 20, 0, 1)
+	case AFSUBS:
+		return OPVCC(59, 20, 0, 0)
+	case AFSUBSCC:
+		return OPVCC(59, 20, 0, 1)
+
+	case AICBI:
+		return OPVCC(31, 982, 0, 0)
+	case AISYNC:
+		return OPVCC(19, 150, 0, 0)
+
+	case AMTFSB0:
+		return OPVCC(63, 70, 0, 0)
+	case AMTFSB0CC:
+		return OPVCC(63, 70, 0, 1)
+	case AMTFSB1:
+		return OPVCC(63, 38, 0, 0)
+	case AMTFSB1CC:
+		return OPVCC(63, 38, 0, 1)
+
+	case AMULHW:
+		return OPVCC(31, 75, 0, 0)
+	case AMULHWCC:
+		return OPVCC(31, 75, 0, 1)
+	case AMULHWU:
+		return OPVCC(31, 11, 0, 0)
+	case AMULHWUCC:
+		return OPVCC(31, 11, 0, 1)
+	case AMULLW:
+		return OPVCC(31, 235, 0, 0)
+	case AMULLWCC:
+		return OPVCC(31, 235, 0, 1)
+	case AMULLWV:
+		return OPVCC(31, 235, 1, 0)
+	case AMULLWVCC:
+		return OPVCC(31, 235, 1, 1)
+
+	case AMULHD:
+		return OPVCC(31, 73, 0, 0)
+	case AMULHDCC:
+		return OPVCC(31, 73, 0, 1)
+	case AMULHDU:
+		return OPVCC(31, 9, 0, 0)
+	case AMULHDUCC:
+		return OPVCC(31, 9, 0, 1)
+	case AMULLD:
+		return OPVCC(31, 233, 0, 0)
+	case AMULLDCC:
+		return OPVCC(31, 233, 0, 1)
+	case AMULLDV:
+		return OPVCC(31, 233, 1, 0)
+	case AMULLDVCC:
+		return OPVCC(31, 233, 1, 1)
+
+	case ANAND:
+		return OPVCC(31, 476, 0, 0)
+	case ANANDCC:
+		return OPVCC(31, 476, 0, 1)
+	case ANEG:
+		return OPVCC(31, 104, 0, 0)
+	case ANEGCC:
+		return OPVCC(31, 104, 0, 1)
+	case ANEGV:
+		return OPVCC(31, 104, 1, 0)
+	case ANEGVCC:
+		return OPVCC(31, 104, 1, 1)
+	case ANOR:
+		return OPVCC(31, 124, 0, 0)
+	case ANORCC:
+		return OPVCC(31, 124, 0, 1)
+	case AOR:
+		return OPVCC(31, 444, 0, 0)
+	case AORCC:
+		return OPVCC(31, 444, 0, 1)
+	case AORN:
+		return OPVCC(31, 412, 0, 0)
+	case AORNCC:
+		return OPVCC(31, 412, 0, 1)
+
+	case ARFI:
+		return OPVCC(19, 50, 0, 0)
+	case ARFCI:
+		return OPVCC(19, 51, 0, 0)
+	case ARFID:
+		return OPVCC(19, 18, 0, 0)
+	case AHRFID:
+		return OPVCC(19, 274, 0, 0)
+
+	case ARLWMI:
+		return OPVCC(20, 0, 0, 0)
+	case ARLWMICC:
+		return OPVCC(20, 0, 0, 1)
+	case ARLWNM:
+		return OPVCC(23, 0, 0, 0)
+	case ARLWNMCC:
+		return OPVCC(23, 0, 0, 1)
+
+	case ARLDCL:
+		return OPVCC(30, 8, 0, 0)
+	case ARLDCR:
+		return OPVCC(30, 9, 0, 0)
+
+	case ARLDICL:
+		return OPVCC(30, 0, 0, 0)
+	case ARLDICLCC:
+		return OPVCC(30, 0, 0, 1)
+	case ARLDICR:
+		return OPVCC(30, 0, 0, 0) | 2<<1 // rldicr
+	case ARLDICRCC:
+		return OPVCC(30, 0, 0, 1) | 2<<1 // rldicr.
+
+	case ASYSCALL:
+		return OPVCC(17, 1, 0, 0)
+
+	case ASLW:
+		return OPVCC(31, 24, 0, 0)
+	case ASLWCC:
+		return OPVCC(31, 24, 0, 1)
+	case ASLD:
+		return OPVCC(31, 27, 0, 0)
+	case ASLDCC:
+		return OPVCC(31, 27, 0, 1)
+
+	case ASRAW:
+		return OPVCC(31, 792, 0, 0)
+	case ASRAWCC:
+		return OPVCC(31, 792, 0, 1)
+	case ASRAD:
+		return OPVCC(31, 794, 0, 0)
+	case ASRADCC:
+		return OPVCC(31, 794, 0, 1)
+
+	case ASRW:
+		return OPVCC(31, 536, 0, 0)
+	case ASRWCC:
+		return OPVCC(31, 536, 0, 1)
+	case ASRD:
+		return OPVCC(31, 539, 0, 0)
+	case ASRDCC:
+		return OPVCC(31, 539, 0, 1)
+
+	case ASUB:
+		return OPVCC(31, 40, 0, 0)
+	case ASUBCC:
+		return OPVCC(31, 40, 0, 1)
+	case ASUBV:
+		return OPVCC(31, 40, 1, 0)
+	case ASUBVCC:
+		return OPVCC(31, 40, 1, 1)
+	case ASUBC:
+		return OPVCC(31, 8, 0, 0)
+	case ASUBCCC:
+		return OPVCC(31, 8, 0, 1)
+	case ASUBCV:
+		return OPVCC(31, 8, 1, 0)
+	case ASUBCVCC:
+		return OPVCC(31, 8, 1, 1)
+	case ASUBE:
+		return OPVCC(31, 136, 0, 0)
+	case ASUBECC:
+		return OPVCC(31, 136, 0, 1)
+	case ASUBEV:
+		return OPVCC(31, 136, 1, 0)
+	case ASUBEVCC:
+		return OPVCC(31, 136, 1, 1)
+	case ASUBME:
+		return OPVCC(31, 232, 0, 0)
+	case ASUBMECC:
+		return OPVCC(31, 232, 0, 1)
+	case ASUBMEV:
+		return OPVCC(31, 232, 1, 0)
+	case ASUBMEVCC:
+		return OPVCC(31, 232, 1, 1)
+	case ASUBZE:
+		return OPVCC(31, 200, 0, 0)
+	case ASUBZECC:
+		return OPVCC(31, 200, 0, 1)
+	case ASUBZEV:
+		return OPVCC(31, 200, 1, 0)
+	case ASUBZEVCC:
+		return OPVCC(31, 200, 1, 1)
+
+	case ASYNC:
+		return OPVCC(31, 598, 0, 0)
+	case ALWSYNC:
+		return OPVCC(31, 598, 0, 0) | 1<<21
+
+	case APTESYNC:
+		return OPVCC(31, 598, 0, 0) | 2<<21
+
+	case ATLBIE:
+		return OPVCC(31, 306, 0, 0)
+	case ATLBIEL:
+		return OPVCC(31, 274, 0, 0)
+	case ATLBSYNC:
+		return OPVCC(31, 566, 0, 0)
+	case ASLBIA:
+		return OPVCC(31, 498, 0, 0)
+	case ASLBIE:
+		return OPVCC(31, 434, 0, 0)
+	case ASLBMFEE:
+		return OPVCC(31, 915, 0, 0)
+	case ASLBMFEV:
+		return OPVCC(31, 851, 0, 0)
+	case ASLBMTE:
+		return OPVCC(31, 402, 0, 0)
+
+	case ATW:
+		return OPVCC(31, 4, 0, 0)
+	case ATD:
+		return OPVCC(31, 68, 0, 0)
+
+	/* Vector (VMX/Altivec) instructions */
+	/* ISA 2.03 enables these for PPC970. For POWERx processors, these */
+	/* are enabled starting at POWER6 (ISA 2.05). */
+	case AVANDL:
+		return OPVX(4, 1028, 0, 0) /* vand - v2.03 */
+	case AVANDC:
+		return OPVX(4, 1092, 0, 0) /* vandc - v2.03 */
+	case AVNAND:
+		return OPVX(4, 1412, 0, 0) /* vnand - v2.07 */
+
+	case AVORL:
+		return OPVX(4, 1156, 0, 0) /* vor - v2.03 */
+	case AVORC:
+		return OPVX(4, 1348, 0, 0) /* vorc - v2.07 */
+	case AVNOR:
+		return OPVX(4, 1284, 0, 0) /* vnor - v2.03 */
+	case AVXOR:
+		return OPVX(4, 1220, 0, 0) /* vxor - v2.03 */
+	case AVEQV:
+		return OPVX(4, 1668, 0, 0) /* veqv - v2.07 */
+
+	case AVADDUBM:
+		return OPVX(4, 0, 0, 0) /* vaddubm - v2.03 */
+	case AVADDUHM:
+		return OPVX(4, 64, 0, 0) /* vadduhm - v2.03 */
+	case AVADDUWM:
+		return OPVX(4, 128, 0, 0) /* vadduwm - v2.03 */
+	case AVADDUDM:
+		return OPVX(4, 192, 0, 0) /* vaddudm - v2.07 */
+	case AVADDUQM:
+		return OPVX(4, 256, 0, 0) /* vadduqm - v2.07 */
+
+	case AVADDCUQ:
+		return OPVX(4, 320, 0, 0) /* vaddcuq - v2.07 */
+	case AVADDCUW:
+		return OPVX(4, 384, 0, 0) /* vaddcuw - v2.03 */
+
+	case AVADDUBS:
+		return OPVX(4, 512, 0, 0) /* vaddubs - v2.03 */
+	case AVADDUHS:
+		return OPVX(4, 576, 0, 0) /* vadduhs - v2.03 */
+	case AVADDUWS:
+		return OPVX(4, 640, 0, 0) /* vadduws - v2.03 */
+
+	case AVADDSBS:
+		return OPVX(4, 768, 0, 0) /* vaddsbs - v2.03 */
+	case AVADDSHS:
+		return OPVX(4, 832, 0, 0) /* vaddshs - v2.03 */
+	case AVADDSWS:
+		return OPVX(4, 896, 0, 0) /* vaddsws - v2.03 */
+
+	case AVADDEUQM:
+		return OPVX(4, 60, 0, 0) /* vaddeuqm - v2.07 */
+	case AVADDECUQ:
+		return OPVX(4, 61, 0, 0) /* vaddecuq - v2.07 */
+
+	case AVSUBUBM:
+		return OPVX(4, 1024, 0, 0) /* vsububm - v2.03 */
+	case AVSUBUHM:
+		return OPVX(4, 1088, 0, 0) /* vsubuhm - v2.03 */
+	case AVSUBUWM:
+		return OPVX(4, 1152, 0, 0) /* vsubuwm - v2.03 */
+	case AVSUBUDM:
+		return OPVX(4, 1216, 0, 0) /* vsubudm - v2.07 */
+	case AVSUBUQM:
+		return OPVX(4, 1280, 0, 0) /* vsubuqm - v2.07 */
+
+	case AVSUBCUQ:
+		return OPVX(4, 1344, 0, 0) /* vsubcuq - v2.07 */
+	case AVSUBCUW:
+		return OPVX(4, 1408, 0, 0) /* vsubcuw - v2.03 */
+
+	case AVSUBUBS:
+		return OPVX(4, 1536, 0, 0) /* vsububs - v2.03 */
+	case AVSUBUHS:
+		return OPVX(4, 1600, 0, 0) /* vsubuhs - v2.03 */
+	case AVSUBUWS:
+		return OPVX(4, 1664, 0, 0) /* vsubuws - v2.03 */
+
+	case AVSUBSBS:
+		return OPVX(4, 1792, 0, 0) /* vsubsbs - v2.03 */
+	case AVSUBSHS:
+		return OPVX(4, 1856, 0, 0) /* vsubshs - v2.03 */
+	case AVSUBSWS:
+		return OPVX(4, 1920, 0, 0) /* vsubsws - v2.03 */
+
+	case AVSUBEUQM:
+		return OPVX(4, 62, 0, 0) /* vsubeuqm - v2.07 */
+	case AVSUBECUQ:
+		return OPVX(4, 63, 0, 0) /* vsubecuq - v2.07 */
+
+	case AVRLB:
+		return OPVX(4, 4, 0, 0) /* vrlb - v2.03 */
+	case AVRLH:
+		return OPVX(4, 68, 0, 0) /* vrlh - v2.03 */
+	case AVRLW:
+		return OPVX(4, 132, 0, 0) /* vrlw - v2.03 */
+	case AVRLD:
+		return OPVX(4, 196, 0, 0) /* vrld - v2.07 */
+
+	case AVSLB:
+		return OPVX(4, 260, 0, 0) /* vslh - v2.03 */
+	case AVSLH:
+		return OPVX(4, 324, 0, 0) /* vslh - v2.03 */
+	case AVSLW:
+		return OPVX(4, 388, 0, 0) /* vslw - v2.03 */
+	case AVSL:
+		return OPVX(4, 452, 0, 0) /* vsl - v2.03 */
+	case AVSLO:
+		return OPVX(4, 1036, 0, 0) /* vsl - v2.03 */
+	case AVSRB:
+		return OPVX(4, 516, 0, 0) /* vsrb - v2.03 */
+	case AVSRH:
+		return OPVX(4, 580, 0, 0) /* vsrh - v2.03 */
+	case AVSRW:
+		return OPVX(4, 644, 0, 0) /* vsrw - v2.03 */
+	case AVSR:
+		return OPVX(4, 708, 0, 0) /* vsr - v2.03 */
+	case AVSRO:
+		return OPVX(4, 1100, 0, 0) /* vsro - v2.03 */
+	case AVSLD:
+		return OPVX(4, 1476, 0, 0) /* vsld - v2.07 */
+	case AVSRD:
+		return OPVX(4, 1732, 0, 0) /* vsrd - v2.07 */
+
+	case AVSRAB:
+		return OPVX(4, 772, 0, 0) /* vsrab - v2.03 */
+	case AVSRAH:
+		return OPVX(4, 836, 0, 0) /* vsrah - v2.03 */
+	case AVSRAW:
+		return OPVX(4, 900, 0, 0) /* vsraw - v2.03 */
+	case AVSRAD:
+		return OPVX(4, 964, 0, 0) /* vsrad - v2.07 */
+
+	case AVCLZB:
+		return OPVX(4, 1794, 0, 0) /* vclzb - v2.07 */
+	case AVCLZH:
+		return OPVX(4, 1858, 0, 0) /* vclzh - v2.07 */
+	case AVCLZW:
+		return OPVX(4, 1922, 0, 0) /* vclzw - v2.07 */
+	case AVCLZD:
+		return OPVX(4, 1986, 0, 0) /* vclzd - v2.07 */
+
+	case AVPOPCNTB:
+		return OPVX(4, 1795, 0, 0) /* vpopcntb - v2.07 */
+	case AVPOPCNTH:
+		return OPVX(4, 1859, 0, 0) /* vpopcnth - v2.07 */
+	case AVPOPCNTW:
+		return OPVX(4, 1923, 0, 0) /* vpopcntw - v2.07 */
+	case AVPOPCNTD:
+		return OPVX(4, 1987, 0, 0) /* vpopcntd - v2.07 */
+
+	case AVCMPEQUB:
+		return OPVC(4, 6, 0, 0) /* vcmpequb - v2.03 */
+	case AVCMPEQUBCC:
+		return OPVC(4, 6, 0, 1) /* vcmpequb. - v2.03 */
+	case AVCMPEQUH:
+		return OPVC(4, 70, 0, 0) /* vcmpequh - v2.03 */
+	case AVCMPEQUHCC:
+		return OPVC(4, 70, 0, 1) /* vcmpequh. - v2.03 */
+	case AVCMPEQUW:
+		return OPVC(4, 134, 0, 0) /* vcmpequw - v2.03 */
+	case AVCMPEQUWCC:
+		return OPVC(4, 134, 0, 1) /* vcmpequw. - v2.03 */
+	case AVCMPEQUD:
+		return OPVC(4, 199, 0, 0) /* vcmpequd - v2.07 */
+	case AVCMPEQUDCC:
+		return OPVC(4, 199, 0, 1) /* vcmpequd. - v2.07 */
+
+	case AVCMPGTUB:
+		return OPVC(4, 518, 0, 0) /* vcmpgtub - v2.03 */
+	case AVCMPGTUBCC:
+		return OPVC(4, 518, 0, 1) /* vcmpgtub. - v2.03 */
+	case AVCMPGTUH:
+		return OPVC(4, 582, 0, 0) /* vcmpgtuh - v2.03 */
+	case AVCMPGTUHCC:
+		return OPVC(4, 582, 0, 1) /* vcmpgtuh. - v2.03 */
+	case AVCMPGTUW:
+		return OPVC(4, 646, 0, 0) /* vcmpgtuw - v2.03 */
+	case AVCMPGTUWCC:
+		return OPVC(4, 646, 0, 1) /* vcmpgtuw. - v2.03 */
+	case AVCMPGTUD:
+		return OPVC(4, 711, 0, 0) /* vcmpgtud - v2.07 */
+	case AVCMPGTUDCC:
+		return OPVC(4, 711, 0, 1) /* vcmpgtud. v2.07 */
+	case AVCMPGTSB:
+		return OPVC(4, 774, 0, 0) /* vcmpgtsb - v2.03 */
+	case AVCMPGTSBCC:
+		return OPVC(4, 774, 0, 1) /* vcmpgtsb. - v2.03 */
+	case AVCMPGTSH:
+		return OPVC(4, 838, 0, 0) /* vcmpgtsh - v2.03 */
+	case AVCMPGTSHCC:
+		return OPVC(4, 838, 0, 1) /* vcmpgtsh. - v2.03 */
+	case AVCMPGTSW:
+		return OPVC(4, 902, 0, 0) /* vcmpgtsw - v2.03 */
+	case AVCMPGTSWCC:
+		return OPVC(4, 902, 0, 1) /* vcmpgtsw. - v2.03 */
+	case AVCMPGTSD:
+		return OPVC(4, 967, 0, 0) /* vcmpgtsd - v2.07 */
+	case AVCMPGTSDCC:
+		return OPVC(4, 967, 0, 1) /* vcmpgtsd. - v2.07 */
+
+	case AVPERM:
+		return OPVX(4, 43, 0, 0) /* vperm - v2.03 */
+
+	case AVSEL:
+		return OPVX(4, 42, 0, 0) /* vsel - v2.03 */
+
+	case AVCIPHER:
+		return OPVX(4, 1288, 0, 0) /* vcipher - v2.07 */
+	case AVCIPHERLAST:
+		return OPVX(4, 1289, 0, 0) /* vcipherlast - v2.07 */
+	case AVNCIPHER:
+		return OPVX(4, 1352, 0, 0) /* vncipher - v2.07 */
+	case AVNCIPHERLAST:
+		return OPVX(4, 1353, 0, 0) /* vncipherlast - v2.07 */
+	case AVSBOX:
+		return OPVX(4, 1480, 0, 0) /* vsbox - v2.07 */
+	/* End of vector instructions */
+
+	/* Vector scalar (VSX) instructions */
+	/* ISA 2.06 enables these for POWER7. */
+	case AMFVSRD:
+		return OPVXX1(31, 51, 0) /* mfvsrd - v2.07 */
+	case AMFVSRWZ:
+		return OPVXX1(31, 115, 0) /* mfvsrwz - v2.07 */
+
+	case AMTVSRD:
+		return OPVXX1(31, 179, 0) /* mtvsrd - v2.07 */
+	case AMTVSRWA:
+		return OPVXX1(31, 211, 0) /* mtvsrwa - v2.07 */
+	case AMTVSRWZ:
+		return OPVXX1(31, 243, 0) /* mtvsrwz - v2.07 */
+
+	case AXXLANDQ:
+		return OPVXX3(60, 130, 0) /* xxland - v2.06 */
+	case AXXLANDC:
+		return OPVXX3(60, 138, 0) /* xxlandc - v2.06 */
+	case AXXLEQV:
+		return OPVXX3(60, 186, 0) /* xxleqv - v2.07 */
+	case AXXLNAND:
+		return OPVXX3(60, 178, 0) /* xxlnand - v2.07 */
+
+	case AXXLORC:
+		return OPVXX3(60, 170, 0) /* xxlorc - v2.07 */
+	case AXXLNOR:
+		return OPVXX3(60, 162, 0) /* xxlnor - v2.06 */
+	case AXXLORQ:
+		return OPVXX3(60, 146, 0) /* xxlor - v2.06 */
+	case AXXLXOR:
+		return OPVXX3(60, 154, 0) /* xxlxor - v2.06 */
+
+	case AXXSEL:
+		return OPVXX4(60, 3, 0) /* xxsel - v2.06 */
+
+	case AXXMRGHW:
+		return OPVXX3(60, 18, 0) /* xxmrghw - v2.06 */
+	case AXXMRGLW:
+		return OPVXX3(60, 50, 0) /* xxmrglw - v2.06 */
+
+	case AXXSPLTW:
+		return OPVXX2(60, 164, 0) /* xxspltw - v2.06 */
+
+	case AXXPERMDI:
+		return OPVXX3(60, 10, 0) /* xxpermdi - v2.06 */
+
+	case AXXSLDWI:
+		return OPVXX3(60, 2, 0) /* xxsldwi - v2.06 */
+
+	case AXSCVDPSP:
+		return OPVXX2(60, 265, 0) /* xscvdpsp - v2.06 */
+	case AXSCVSPDP:
+		return OPVXX2(60, 329, 0) /* xscvspdp - v2.06 */
+	case AXSCVDPSPN:
+		return OPVXX2(60, 267, 0) /* xscvdpspn - v2.07 */
+	case AXSCVSPDPN:
+		return OPVXX2(60, 331, 0) /* xscvspdpn - v2.07 */
+
+	case AXVCVDPSP:
+		return OPVXX2(60, 393, 0) /* xvcvdpsp - v2.06 */
+	case AXVCVSPDP:
+		return OPVXX2(60, 457, 0) /* xvcvspdp - v2.06 */
+
+	case AXSCVDPSXDS:
+		return OPVXX2(60, 344, 0) /* xscvdpsxds - v2.06 */
+	case AXSCVDPSXWS:
+		return OPVXX2(60, 88, 0) /* xscvdpsxws - v2.06 */
+	case AXSCVDPUXDS:
+		return OPVXX2(60, 328, 0) /* xscvdpuxds - v2.06 */
+	case AXSCVDPUXWS:
+		return OPVXX2(60, 72, 0) /* xscvdpuxws - v2.06 */
+
+	case AXSCVSXDDP:
+		return OPVXX2(60, 376, 0) /* xscvsxddp - v2.06 */
+	case AXSCVUXDDP:
+		return OPVXX2(60, 360, 0) /* xscvuxddp - v2.06 */
+	case AXSCVSXDSP:
+		return OPVXX2(60, 312, 0) /* xscvsxdsp - v2.06 */
+	case AXSCVUXDSP:
+		return OPVXX2(60, 296, 0) /* xscvuxdsp - v2.06 */
+
+	case AXVCVDPSXDS:
+		return OPVXX2(60, 472, 0) /* xvcvdpsxds - v2.06 */
+	case AXVCVDPSXWS:
+		return OPVXX2(60, 216, 0) /* xvcvdpsxws - v2.06 */
+	case AXVCVDPUXDS:
+		return OPVXX2(60, 456, 0) /* xvcvdpuxds - v2.06 */
+	case AXVCVDPUXWS:
+		return OPVXX2(60, 200, 0) /* xvcvdpuxws - v2.06 */
+	case AXVCVSPSXDS:
+		return OPVXX2(60, 408, 0) /* xvcvspsxds - v2.07 */
+	case AXVCVSPSXWS:
+		return OPVXX2(60, 152, 0) /* xvcvspsxws - v2.07 */
+	case AXVCVSPUXDS:
+		return OPVXX2(60, 392, 0) /* xvcvspuxds - v2.07 */
+	case AXVCVSPUXWS:
+		return OPVXX2(60, 136, 0) /* xvcvspuxws - v2.07 */
+
+	case AXVCVSXDDP:
+		return OPVXX2(60, 504, 0) /* xvcvsxddp - v2.06 */
+	case AXVCVSXWDP:
+		return OPVXX2(60, 248, 0) /* xvcvsxwdp - v2.06 */
+	case AXVCVUXDDP:
+		return OPVXX2(60, 488, 0) /* xvcvuxddp - v2.06 */
+	case AXVCVUXWDP:
+		return OPVXX2(60, 232, 0) /* xvcvuxwdp - v2.06 */
+	case AXVCVSXDSP:
+		return OPVXX2(60, 440, 0) /* xvcvsxdsp - v2.06 */
+	case AXVCVSXWSP:
+		return OPVXX2(60, 184, 0) /* xvcvsxwsp - v2.06 */
+	case AXVCVUXDSP:
+		return OPVXX2(60, 424, 0) /* xvcvuxdsp - v2.06 */
+	case AXVCVUXWSP:
+		return OPVXX2(60, 168, 0) /* xvcvuxwsp - v2.06 */
+	/* End of VSX instructions */
+
+	case AXOR:
+		return OPVCC(31, 316, 0, 0)
+	case AXORCC:
+		return OPVCC(31, 316, 0, 1)
+	}
+
+	ctxt.Diag("bad r/r, r/r/r or r/r/r/r opcode %v", a)
+	return 0
+}
+
+func opirrr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	/* Vector (VMX/Altivec) instructions */
+	/* ISA 2.03 enables these for PPC970. For POWERx processors, these */
+	/* are enabled starting at POWER6 (ISA 2.05). */
+	case AVSLDOI:
+		return OPVX(4, 44, 0, 0) /* vsldoi - v2.03 */
+	}
+
+	ctxt.Diag("bad i/r/r/r opcode %v", a)
+	return 0
+}
+
+func opiirr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	/* Vector (VMX/Altivec) instructions */
+	/* ISA 2.07 enables these for POWER8 and beyond. */
+	case AVSHASIGMAW:
+		return OPVX(4, 1666, 0, 0) /* vshasigmaw - v2.07 */
+	case AVSHASIGMAD:
+		return OPVX(4, 1730, 0, 0) /* vshasigmad - v2.07 */
+	}
+
+	ctxt.Diag("bad i/i/r/r opcode %v", a)
+	return 0
+}
+
+func opirr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AADD:
+		return OPVCC(14, 0, 0, 0)
+	case AADDC:
+		return OPVCC(12, 0, 0, 0)
+	case AADDCCC:
+		return OPVCC(13, 0, 0, 0)
+	case -AADD:
+		return OPVCC(15, 0, 0, 0) /* ADDIS/CAU */
+
+	case AANDCC:
+		return OPVCC(28, 0, 0, 0)
+	case -AANDCC:
+		return OPVCC(29, 0, 0, 0) /* ANDIS./ANDIU. */
+
+	case ABR:
+		return OPVCC(18, 0, 0, 0)
+	case ABL:
+		return OPVCC(18, 0, 0, 0) | 1
+	case obj.ADUFFZERO:
+		return OPVCC(18, 0, 0, 0) | 1
+	case obj.ADUFFCOPY:
+		return OPVCC(18, 0, 0, 0) | 1
+	case ABC:
+		return OPVCC(16, 0, 0, 0)
+	case ABCL:
+		return OPVCC(16, 0, 0, 0) | 1
+
+	case ABEQ:
+		return AOP_RRR(16<<26, 12, 2, 0)
+	case ABGE:
+		return AOP_RRR(16<<26, 4, 0, 0)
+	case ABGT:
+		return AOP_RRR(16<<26, 12, 1, 0)
+	case ABLE:
+		return AOP_RRR(16<<26, 4, 1, 0)
+	case ABLT:
+		return AOP_RRR(16<<26, 12, 0, 0)
+	case ABNE:
+		return AOP_RRR(16<<26, 4, 2, 0)
+	case ABVC:
+		return AOP_RRR(16<<26, 4, 3, 0) // apparently unordered-clear
+	case ABVS:
+		return AOP_RRR(16<<26, 12, 3, 0) // apparently unordered-set
+
+	case ACMP:
+		return OPVCC(11, 0, 0, 0) | 1<<21 /* L=1 */
+	case ACMPU:
+		return OPVCC(10, 0, 0, 0) | 1<<21
+	case ACMPW:
+		return OPVCC(11, 0, 0, 0) /* L=0 */
+	case ACMPWU:
+		return OPVCC(10, 0, 0, 0)
+	case ALSW:
+		return OPVCC(31, 597, 0, 0)
+
+	case AMULLW:
+		return OPVCC(7, 0, 0, 0)
+
+	case AOR:
+		return OPVCC(24, 0, 0, 0)
+	case -AOR:
+		return OPVCC(25, 0, 0, 0) /* ORIS/ORIU */
+
+	case ARLWMI:
+		return OPVCC(20, 0, 0, 0) /* rlwimi */
+	case ARLWMICC:
+		return OPVCC(20, 0, 0, 1)
+	case ARLDMI:
+		return OPVCC(30, 0, 0, 0) | 3<<2 /* rldimi */
+	case ARLDMICC:
+		return OPVCC(30, 0, 0, 1) | 3<<2
+	case ARLDIMI:
+		return OPVCC(30, 0, 0, 0) | 3<<2 /* rldimi */
+	case ARLDIMICC:
+		return OPVCC(30, 0, 0, 1) | 3<<2
+	case ARLWNM:
+		return OPVCC(21, 0, 0, 0) /* rlwinm */
+	case ARLWNMCC:
+		return OPVCC(21, 0, 0, 1)
+
+	case ARLDCL:
+		return OPVCC(30, 0, 0, 0) /* rldicl */
+	case ARLDCLCC:
+		return OPVCC(30, 0, 0, 1)
+	case ARLDCR:
+		return OPVCC(30, 1, 0, 0) /* rldicr */
+	case ARLDCRCC:
+		return OPVCC(30, 1, 0, 1)
+	case ARLDC:
+		return OPVCC(30, 0, 0, 0) | 2<<2
+	case ARLDCCC:
+		return OPVCC(30, 0, 0, 1) | 2<<2
+
+	case ASRAW:
+		return OPVCC(31, 824, 0, 0)
+	case ASRAWCC:
+		return OPVCC(31, 824, 0, 1)
+	case ASRAD:
+		return OPVCC(31, (413 << 1), 0, 0)
+	case ASRADCC:
+		return OPVCC(31, (413 << 1), 0, 1)
+
+	case ASTSW:
+		return OPVCC(31, 725, 0, 0)
+
+	case ASUBC:
+		return OPVCC(8, 0, 0, 0)
+
+	case ATW:
+		return OPVCC(3, 0, 0, 0)
+	case ATD:
+		return OPVCC(2, 0, 0, 0)
+
+	/* Vector (VMX/Altivec) instructions */
+	/* ISA 2.03 enables these for PPC970. For POWERx processors, these */
+	/* are enabled starting at POWER6 (ISA 2.05). */
+	case AVSPLTB:
+		return OPVX(4, 524, 0, 0) /* vspltb - v2.03 */
+	case AVSPLTH:
+		return OPVX(4, 588, 0, 0) /* vsplth - v2.03 */
+	case AVSPLTW:
+		return OPVX(4, 652, 0, 0) /* vspltw - v2.03 */
+
+	case AVSPLTISB:
+		return OPVX(4, 780, 0, 0) /* vspltisb - v2.03 */
+	case AVSPLTISH:
+		return OPVX(4, 844, 0, 0) /* vspltish - v2.03 */
+	case AVSPLTISW:
+		return OPVX(4, 908, 0, 0) /* vspltisw - v2.03 */
+	/* End of vector instructions */
+
+	case AXOR:
+		return OPVCC(26, 0, 0, 0) /* XORIL */
+	case -AXOR:
+		return OPVCC(27, 0, 0, 0) /* XORIU */
+	}
+
+	ctxt.Diag("bad opcode i/r or i/r/r %v", a)
+	return 0
+}
+
+/*
+ * load o(a),d
+ */
+func opload(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVD:
+		return OPVCC(58, 0, 0, 0) /* ld */
+	case AMOVDU:
+		return OPVCC(58, 0, 0, 1) /* ldu */
+	case AMOVWZ:
+		return OPVCC(32, 0, 0, 0) /* lwz */
+	case AMOVWZU:
+		return OPVCC(33, 0, 0, 0) /* lwzu */
+	case AMOVW:
+		return OPVCC(58, 0, 0, 0) | 1<<1 /* lwa */
+
+		/* no AMOVWU */
+	case AMOVB, AMOVBZ:
+		return OPVCC(34, 0, 0, 0)
+		/* load */
+
+	case AMOVBU, AMOVBZU:
+		return OPVCC(35, 0, 0, 0)
+	case AFMOVD:
+		return OPVCC(50, 0, 0, 0)
+	case AFMOVDU:
+		return OPVCC(51, 0, 0, 0)
+	case AFMOVS:
+		return OPVCC(48, 0, 0, 0)
+	case AFMOVSU:
+		return OPVCC(49, 0, 0, 0)
+	case AMOVH:
+		return OPVCC(42, 0, 0, 0)
+	case AMOVHU:
+		return OPVCC(43, 0, 0, 0)
+	case AMOVHZ:
+		return OPVCC(40, 0, 0, 0)
+	case AMOVHZU:
+		return OPVCC(41, 0, 0, 0)
+	case AMOVMW:
+		return OPVCC(46, 0, 0, 0) /* lmw */
+	}
+
+	ctxt.Diag("bad load opcode %v", a)
+	return 0
+}
+
+/*
+ * indexed load a(b),d
+ */
+func oploadx(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVWZ:
+		return OPVCC(31, 23, 0, 0) /* lwzx */
+	case AMOVWZU:
+		return OPVCC(31, 55, 0, 0) /* lwzux */
+	case AMOVW:
+		return OPVCC(31, 341, 0, 0) /* lwax */
+	case AMOVWU:
+		return OPVCC(31, 373, 0, 0) /* lwaux */
+
+	case AMOVB, AMOVBZ:
+		return OPVCC(31, 87, 0, 0) /* lbzx */
+
+	case AMOVBU, AMOVBZU:
+		return OPVCC(31, 119, 0, 0) /* lbzux */
+	case AFMOVD:
+		return OPVCC(31, 599, 0, 0) /* lfdx */
+	case AFMOVDU:
+		return OPVCC(31, 631, 0, 0) /*  lfdux */
+	case AFMOVS:
+		return OPVCC(31, 535, 0, 0) /* lfsx */
+	case AFMOVSU:
+		return OPVCC(31, 567, 0, 0) /* lfsux */
+	case AFMOVSX:
+		return OPVCC(31, 855, 0, 0) /* lfiwax - power6, isa 2.05 */
+	case AFMOVSZ:
+		return OPVCC(31, 887, 0, 0) /* lfiwzx - power7, isa 2.06 */
+	case AMOVH:
+		return OPVCC(31, 343, 0, 0) /* lhax */
+	case AMOVHU:
+		return OPVCC(31, 375, 0, 0) /* lhaux */
+	case AMOVHBR:
+		return OPVCC(31, 790, 0, 0) /* lhbrx */
+	case AMOVWBR:
+		return OPVCC(31, 534, 0, 0) /* lwbrx */
+	case AMOVDBR:
+		return OPVCC(31, 532, 0, 0) /* ldbrx */
+	case AMOVHZ:
+		return OPVCC(31, 279, 0, 0) /* lhzx */
+	case AMOVHZU:
+		return OPVCC(31, 311, 0, 0) /* lhzux */
+	case AECIWX:
+		return OPVCC(31, 310, 0, 0) /* eciwx */
+	case ALBAR:
+		return OPVCC(31, 52, 0, 0) /* lbarx */
+	case ALWAR:
+		return OPVCC(31, 20, 0, 0) /* lwarx */
+	case ALDAR:
+		return OPVCC(31, 84, 0, 0)
+	case ALSW:
+		return OPVCC(31, 533, 0, 0) /* lswx */
+	case AMOVD:
+		return OPVCC(31, 21, 0, 0) /* ldx */
+	case AMOVDU:
+		return OPVCC(31, 53, 0, 0) /* ldux */
+
+	/* Vector (VMX/Altivec) instructions */
+	/* ISA 2.03 enables these for PPC970. For POWERx processors, these */
+	/* are enabled starting at POWER6 (ISA 2.05). */
+	case ALVEBX:
+		return OPVCC(31, 7, 0, 0) /* lvebx - v2.03 */
+	case ALVEHX:
+		return OPVCC(31, 39, 0, 0) /* lvehx - v2.03 */
+	case ALVEWX:
+		return OPVCC(31, 71, 0, 0) /* lvewx - v2.03 */
+	case ALVX:
+		return OPVCC(31, 103, 0, 0) /* lvx - v2.03 */
+	case ALVXL:
+		return OPVCC(31, 359, 0, 0) /* lvxl - v2.03 */
+	case ALVSL:
+		return OPVCC(31, 6, 0, 0) /* lvsl - v2.03 */
+	case ALVSR:
+		return OPVCC(31, 38, 0, 0) /* lvsr - v2.03 */
+		/* End of vector instructions */
+
+	/* Vector scalar (VSX) instructions */
+	/* ISA 2.06 enables these for POWER7. */
+	case ALXVD2X:
+		return OPVXX1(31, 844, 0) /* lxvd2x - v2.06 */
+	case ALXVDSX:
+		return OPVXX1(31, 332, 0) /* lxvdsx - v2.06 */
+	case ALXVW4X:
+		return OPVXX1(31, 780, 0) /* lxvw4x - v2.06 */
+
+	case ALXSDX:
+		return OPVXX1(31, 588, 0) /* lxsdx - v2.06 */
+
+	case ALXSIWAX:
+		return OPVXX1(31, 76, 0) /* lxsiwax - v2.07 */
+	case ALXSIWZX:
+		return OPVXX1(31, 12, 0) /* lxsiwzx - v2.07 */
+		/* End of vector scalar instructions */
+
+	}
+
+	ctxt.Diag("bad loadx opcode %v", a)
+	return 0
+}
+
+/*
+ * store s,o(d)
+ */
+func opstore(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVB, AMOVBZ:
+		return OPVCC(38, 0, 0, 0) /* stb */
+
+	case AMOVBU, AMOVBZU:
+		return OPVCC(39, 0, 0, 0) /* stbu */
+	case AFMOVD:
+		return OPVCC(54, 0, 0, 0) /* stfd */
+	case AFMOVDU:
+		return OPVCC(55, 0, 0, 0) /* stfdu */
+	case AFMOVS:
+		return OPVCC(52, 0, 0, 0) /* stfs */
+	case AFMOVSU:
+		return OPVCC(53, 0, 0, 0) /* stfsu */
+
+	case AMOVHZ, AMOVH:
+		return OPVCC(44, 0, 0, 0) /* sth */
+
+	case AMOVHZU, AMOVHU:
+		return OPVCC(45, 0, 0, 0) /* sthu */
+	case AMOVMW:
+		return OPVCC(47, 0, 0, 0) /* stmw */
+	case ASTSW:
+		return OPVCC(31, 725, 0, 0) /* stswi */
+
+	case AMOVWZ, AMOVW:
+		return OPVCC(36, 0, 0, 0) /* stw */
+
+	case AMOVWZU, AMOVWU:
+		return OPVCC(37, 0, 0, 0) /* stwu */
+	case AMOVD:
+		return OPVCC(62, 0, 0, 0) /* std */
+	case AMOVDU:
+		return OPVCC(62, 0, 0, 1) /* stdu */
+	}
+
+	ctxt.Diag("unknown store opcode %v", a)
+	return 0
+}
+
+/*
+ * indexed store s,a(b)
+ */
+func opstorex(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case AMOVB, AMOVBZ:
+		return OPVCC(31, 215, 0, 0) /* stbx */
+
+	case AMOVBU, AMOVBZU:
+		return OPVCC(31, 247, 0, 0) /* stbux */
+	case AFMOVD:
+		return OPVCC(31, 727, 0, 0) /* stfdx */
+	case AFMOVDU:
+		return OPVCC(31, 759, 0, 0) /* stfdux */
+	case AFMOVS:
+		return OPVCC(31, 663, 0, 0) /* stfsx */
+	case AFMOVSU:
+		return OPVCC(31, 695, 0, 0) /* stfsux */
+	case AFMOVSX:
+		return OPVCC(31, 983, 0, 0) /* stfiwx */
+
+	case AMOVHZ, AMOVH:
+		return OPVCC(31, 407, 0, 0) /* sthx */
+	case AMOVHBR:
+		return OPVCC(31, 918, 0, 0) /* sthbrx */
+
+	case AMOVHZU, AMOVHU:
+		return OPVCC(31, 439, 0, 0) /* sthux */
+
+	case AMOVWZ, AMOVW:
+		return OPVCC(31, 151, 0, 0) /* stwx */
+
+	case AMOVWZU, AMOVWU:
+		return OPVCC(31, 183, 0, 0) /* stwux */
+	case ASTSW:
+		return OPVCC(31, 661, 0, 0) /* stswx */
+	case AMOVWBR:
+		return OPVCC(31, 662, 0, 0) /* stwbrx */
+	case ASTBCCC:
+		return OPVCC(31, 694, 0, 1) /* stbcx. */
+	case ASTWCCC:
+		return OPVCC(31, 150, 0, 1) /* stwcx. */
+	case ASTDCCC:
+		return OPVCC(31, 214, 0, 1) /* stwdx. */
+	case AECOWX:
+		return OPVCC(31, 438, 0, 0) /* ecowx */
+	case AMOVD:
+		return OPVCC(31, 149, 0, 0) /* stdx */
+	case AMOVDU:
+		return OPVCC(31, 181, 0, 0) /* stdux */
+
+	/* Vector (VMX/Altivec) instructions */
+	/* ISA 2.03 enables these for PPC970. For POWERx processors, these */
+	/* are enabled starting at POWER6 (ISA 2.05). */
+	case ASTVEBX:
+		return OPVCC(31, 135, 0, 0) /* stvebx - v2.03 */
+	case ASTVEHX:
+		return OPVCC(31, 167, 0, 0) /* stvehx - v2.03 */
+	case ASTVEWX:
+		return OPVCC(31, 199, 0, 0) /* stvewx - v2.03 */
+	case ASTVX:
+		return OPVCC(31, 231, 0, 0) /* stvx - v2.03 */
+	case ASTVXL:
+		return OPVCC(31, 487, 0, 0) /* stvxl - v2.03 */
+		/* End of vector instructions */
+
+	/* Vector scalar (VSX) instructions */
+	/* ISA 2.06 enables these for POWER7. */
+	case ASTXVD2X:
+		return OPVXX1(31, 972, 0) /* stxvd2x - v2.06 */
+	case ASTXVW4X:
+		return OPVXX1(31, 908, 0) /* stxvw4x - v2.06 */
+
+	case ASTXSDX:
+		return OPVXX1(31, 716, 0) /* stxsdx - v2.06 */
+
+	case ASTXSIWX:
+		return OPVXX1(31, 140, 0) /* stxsiwx - v2.07 */
+		/* End of vector scalar instructions */
+
+	}
+
+	ctxt.Diag("unknown storex opcode %v", a)
+	return 0
+}
diff --git a/vendor/github.com/google/gops/internal/obj/ppc64/list9.go b/vendor/github.com/google/gops/internal/obj/ppc64/list9.go
new file mode 100644
index 00000000..0ceac09b
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ppc64/list9.go
@@ -0,0 +1,105 @@
+// cmd/9l/list.c from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package ppc64
+
+import (
+	"fmt"
+
+	"github.com/google/gops/internal/obj"
+)
+
+func init() {
+	obj.RegisterRegister(obj.RBasePPC64, REG_DCR0+1024, Rconv)
+	obj.RegisterOpcode(obj.ABasePPC64, Anames)
+}
+
+func Rconv(r int) string {
+	if r == 0 {
+		return "NONE"
+	}
+	if r == REGG {
+		// Special case.
+		return "g"
+	}
+	if REG_R0 <= r && r <= REG_R31 {
+		return fmt.Sprintf("R%d", r-REG_R0)
+	}
+	if REG_F0 <= r && r <= REG_F31 {
+		return fmt.Sprintf("F%d", r-REG_F0)
+	}
+	if REG_V0 <= r && r <= REG_V31 {
+		return fmt.Sprintf("V%d", r-REG_V0)
+	}
+	if REG_VS0 <= r && r <= REG_VS63 {
+		return fmt.Sprintf("VS%d", r-REG_VS0)
+	}
+	if REG_CR0 <= r && r <= REG_CR7 {
+		return fmt.Sprintf("CR%d", r-REG_CR0)
+	}
+	if r == REG_CR {
+		return "CR"
+	}
+	if REG_SPR0 <= r && r <= REG_SPR0+1023 {
+		switch r {
+		case REG_XER:
+			return "XER"
+
+		case REG_LR:
+			return "LR"
+
+		case REG_CTR:
+			return "CTR"
+		}
+
+		return fmt.Sprintf("SPR(%d)", r-REG_SPR0)
+	}
+
+	if REG_DCR0 <= r && r <= REG_DCR0+1023 {
+		return fmt.Sprintf("DCR(%d)", r-REG_DCR0)
+	}
+	if r == REG_FPSCR {
+		return "FPSCR"
+	}
+	if r == REG_MSR {
+		return "MSR"
+	}
+
+	return fmt.Sprintf("Rgok(%d)", r-obj.RBasePPC64)
+}
+
+func DRconv(a int) string {
+	s := "C_??"
+	if a >= C_NONE && a <= C_NCLASS {
+		s = cnames9[a]
+	}
+	var fp string
+	fp += s
+	return fp
+}
diff --git a/vendor/github.com/google/gops/internal/obj/ppc64/obj9.go b/vendor/github.com/google/gops/internal/obj/ppc64/obj9.go
new file mode 100644
index 00000000..6cff162c
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/ppc64/obj9.go
@@ -0,0 +1,1251 @@
+// cmd/9l/noop.c, cmd/9l/pass.c, cmd/9l/span.c from Vita Nuova.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package ppc64
+
+import (
+	"fmt"
+	"math"
+
+	"github.com/google/gops/internal/obj"
+	"github.com/google/gops/internal/sys"
+)
+
+func progedit(ctxt *obj.Link, p *obj.Prog) {
+	p.From.Class = 0
+	p.To.Class = 0
+
+	// Rewrite BR/BL to symbol as TYPE_BRANCH.
+	switch p.As {
+	case ABR,
+		ABL,
+		obj.ARET,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		if p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+	}
+
+	// Rewrite float constants to values stored in memory.
+	switch p.As {
+	case AFMOVS:
+		if p.From.Type == obj.TYPE_FCONST {
+			f32 := float32(p.From.Val.(float64))
+			i32 := math.Float32bits(f32)
+			literal := fmt.Sprintf("$f32.%08x", i32)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 4
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+	case AFMOVD:
+		if p.From.Type == obj.TYPE_FCONST {
+			i64 := math.Float64bits(p.From.Val.(float64))
+			literal := fmt.Sprintf("$f64.%016x", i64)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 8
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+		// Put >32-bit constants in memory and load them
+	case AMOVD:
+		if p.From.Type == obj.TYPE_CONST && p.From.Name == obj.NAME_NONE && p.From.Reg == 0 && int64(int32(p.From.Offset)) != p.From.Offset {
+			literal := fmt.Sprintf("$i64.%016x", uint64(p.From.Offset))
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 8
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+	}
+
+	// Rewrite SUB constants into ADD.
+	switch p.As {
+	case ASUBC:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDC
+		}
+
+	case ASUBCCC:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDCCC
+		}
+
+	case ASUB:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADD
+		}
+	}
+	if ctxt.Flag_dynlink {
+		rewriteToUseGot(ctxt, p)
+	}
+}
+
+// Rewrite p, if necessary, to access global data via the global offset table.
+func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog) {
+	if p.As == obj.ADUFFCOPY || p.As == obj.ADUFFZERO {
+		//     ADUFFxxx $offset
+		// becomes
+		//     MOVD runtime.duffxxx@GOT, R12
+		//     ADD $offset, R12
+		//     MOVD R12, CTR
+		//     BL (CTR)
+		var sym *obj.LSym
+		if p.As == obj.ADUFFZERO {
+			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+		} else {
+			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+		}
+		offset := p.To.Offset
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		p.From.Sym = sym
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R12
+		p.To.Name = obj.NAME_NONE
+		p.To.Offset = 0
+		p.To.Sym = nil
+		p1 := obj.Appendp(ctxt, p)
+		p1.As = AADD
+		p1.From.Type = obj.TYPE_CONST
+		p1.From.Offset = offset
+		p1.To.Type = obj.TYPE_REG
+		p1.To.Reg = REG_R12
+		p2 := obj.Appendp(ctxt, p1)
+		p2.As = AMOVD
+		p2.From.Type = obj.TYPE_REG
+		p2.From.Reg = REG_R12
+		p2.To.Type = obj.TYPE_REG
+		p2.To.Reg = REG_CTR
+		p3 := obj.Appendp(ctxt, p2)
+		p3.As = obj.ACALL
+		p3.From.Type = obj.TYPE_REG
+		p3.From.Reg = REG_R12
+		p3.To.Type = obj.TYPE_REG
+		p3.To.Reg = REG_CTR
+	}
+
+	// We only care about global data: NAME_EXTERN means a global
+	// symbol in the Go sense, and p.Sym.Local is true for a few
+	// internally defined symbols.
+	if p.From.Type == obj.TYPE_ADDR && p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		// MOVD $sym, Rx becomes MOVD sym@GOT, Rx
+		// MOVD $sym+<off>, Rx becomes MOVD sym@GOT, Rx; ADD <off>, Rx
+		if p.As != AMOVD {
+			ctxt.Diag("do not know how to handle TYPE_ADDR in %v with -dynlink", p)
+		}
+		if p.To.Type != obj.TYPE_REG {
+			ctxt.Diag("do not know how to handle LEAQ-type insn to non-register in %v with -dynlink", p)
+		}
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		if p.From.Offset != 0 {
+			q := obj.Appendp(ctxt, p)
+			q.As = AADD
+			q.From.Type = obj.TYPE_CONST
+			q.From.Offset = p.From.Offset
+			q.To = p.To
+			p.From.Offset = 0
+		}
+	}
+	if p.From3 != nil && p.From3.Name == obj.NAME_EXTERN {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	var source *obj.Addr
+	// MOVx sym, Ry becomes MOVD sym@GOT, REGTMP; MOVx (REGTMP), Ry
+	// MOVx Ry, sym becomes MOVD sym@GOT, REGTMP; MOVx Ry, (REGTMP)
+	// An addition may be inserted between the two MOVs if there is an offset.
+	if p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+			ctxt.Diag("cannot handle NAME_EXTERN on both sides in %v with -dynlink", p)
+		}
+		source = &p.From
+	} else if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+		source = &p.To
+	} else {
+		return
+	}
+	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP {
+		return
+	}
+	if source.Sym.Type == obj.STLSBSS {
+		return
+	}
+	if source.Type != obj.TYPE_MEM {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	p1 := obj.Appendp(ctxt, p)
+	p2 := obj.Appendp(ctxt, p1)
+
+	p1.As = AMOVD
+	p1.From.Type = obj.TYPE_MEM
+	p1.From.Sym = source.Sym
+	p1.From.Name = obj.NAME_GOTREF
+	p1.To.Type = obj.TYPE_REG
+	p1.To.Reg = REGTMP
+
+	p2.As = p.As
+	p2.From = p.From
+	p2.To = p.To
+	if p.From.Name == obj.NAME_EXTERN {
+		p2.From.Reg = REGTMP
+		p2.From.Name = obj.NAME_NONE
+		p2.From.Sym = nil
+	} else if p.To.Name == obj.NAME_EXTERN {
+		p2.To.Reg = REGTMP
+		p2.To.Name = obj.NAME_NONE
+		p2.To.Sym = nil
+	} else {
+		return
+	}
+	obj.Nopout(p)
+}
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
+	// TODO(minux): add morestack short-cuts with small fixed frame-size.
+	ctxt.Cursym = cursym
+
+	if cursym.Text == nil || cursym.Text.Link == nil {
+		return
+	}
+
+	p := cursym.Text
+	textstksiz := p.To.Offset
+	if textstksiz == -8 {
+		// Compatibility hack.
+		p.From3.Offset |= obj.NOFRAME
+		textstksiz = 0
+	}
+	if textstksiz%8 != 0 {
+		ctxt.Diag("frame size %d not a multiple of 8", textstksiz)
+	}
+	if p.From3.Offset&obj.NOFRAME != 0 {
+		if textstksiz != 0 {
+			ctxt.Diag("NOFRAME functions must have a frame size of 0, not %d", textstksiz)
+		}
+	}
+
+	cursym.Args = p.To.Val.(int32)
+	cursym.Locals = int32(textstksiz)
+
+	/*
+	 * find leaf subroutines
+	 * strip NOPs
+	 * expand RET
+	 * expand BECOME pseudo
+	 */
+	if ctxt.Debugvlog != 0 {
+		ctxt.Logf("%5.2f noops\n", obj.Cputime())
+	}
+
+	var q *obj.Prog
+	var q1 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		switch p.As {
+		/* too hard, just leave alone */
+		case obj.ATEXT:
+			q = p
+
+			p.Mark |= LABEL | LEAF | SYNC
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+
+		case ANOR:
+			q = p
+			if p.To.Type == obj.TYPE_REG {
+				if p.To.Reg == REGZERO {
+					p.Mark |= LABEL | SYNC
+				}
+			}
+
+		case ALWAR,
+			ALBAR,
+			ASTBCCC,
+			ASTWCCC,
+			AECIWX,
+			AECOWX,
+			AEIEIO,
+			AICBI,
+			AISYNC,
+			ATLBIE,
+			ATLBIEL,
+			ASLBIA,
+			ASLBIE,
+			ASLBMFEE,
+			ASLBMFEV,
+			ASLBMTE,
+			ADCBF,
+			ADCBI,
+			ADCBST,
+			ADCBT,
+			ADCBTST,
+			ADCBZ,
+			ASYNC,
+			ATLBSYNC,
+			APTESYNC,
+			ALWSYNC,
+			ATW,
+			AWORD,
+			ARFI,
+			ARFCI,
+			ARFID,
+			AHRFID:
+			q = p
+			p.Mark |= LABEL | SYNC
+			continue
+
+		case AMOVW, AMOVWZ, AMOVD:
+			q = p
+			if p.From.Reg >= REG_SPECIAL || p.To.Reg >= REG_SPECIAL {
+				p.Mark |= LABEL | SYNC
+			}
+			continue
+
+		case AFABS,
+			AFABSCC,
+			AFADD,
+			AFADDCC,
+			AFCTIW,
+			AFCTIWCC,
+			AFCTIWZ,
+			AFCTIWZCC,
+			AFDIV,
+			AFDIVCC,
+			AFMADD,
+			AFMADDCC,
+			AFMOVD,
+			AFMOVDU,
+			/* case AFMOVDS: */
+			AFMOVS,
+			AFMOVSU,
+
+			/* case AFMOVSD: */
+			AFMSUB,
+			AFMSUBCC,
+			AFMUL,
+			AFMULCC,
+			AFNABS,
+			AFNABSCC,
+			AFNEG,
+			AFNEGCC,
+			AFNMADD,
+			AFNMADDCC,
+			AFNMSUB,
+			AFNMSUBCC,
+			AFRSP,
+			AFRSPCC,
+			AFSUB,
+			AFSUBCC:
+			q = p
+
+			p.Mark |= FLOAT
+			continue
+
+		case ABL,
+			ABCL,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			cursym.Text.Mark &^= LEAF
+			fallthrough
+
+		case ABC,
+			ABEQ,
+			ABGE,
+			ABGT,
+			ABLE,
+			ABLT,
+			ABNE,
+			ABR,
+			ABVC,
+			ABVS:
+			p.Mark |= BRANCH
+			q = p
+			q1 = p.Pcond
+			if q1 != nil {
+				for q1.As == obj.ANOP {
+					q1 = q1.Link
+					p.Pcond = q1
+				}
+
+				if q1.Mark&LEAF == 0 {
+					q1.Mark |= LABEL
+				}
+			} else {
+				p.Mark |= LABEL
+			}
+			q1 = p.Link
+			if q1 != nil {
+				q1.Mark |= LABEL
+			}
+			continue
+
+		case AFCMPO, AFCMPU:
+			q = p
+			p.Mark |= FCMP | FLOAT
+			continue
+
+		case obj.ARET:
+			q = p
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+			continue
+
+		case obj.ANOP:
+			q1 = p.Link
+			q.Link = q1 /* q is non-nop */
+			q1.Mark |= p.Mark
+			continue
+
+		default:
+			q = p
+			continue
+		}
+	}
+
+	autosize := int32(0)
+	var p1 *obj.Prog
+	var p2 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		o := p.As
+		switch o {
+		case obj.ATEXT:
+			autosize = int32(textstksiz)
+
+			if p.Mark&LEAF != 0 && autosize == 0 {
+				// A leaf function with no locals has no frame.
+				p.From3.Offset |= obj.NOFRAME
+			}
+
+			if p.From3.Offset&obj.NOFRAME == 0 {
+				// If there is a stack frame at all, it includes
+				// space to save the LR.
+				autosize += int32(ctxt.FixedFrameSize())
+			}
+
+			if p.Mark&LEAF != 0 && autosize < obj.StackSmall {
+				// A leaf function with a small stack can be marked
+				// NOSPLIT, avoiding a stack check.
+				p.From3.Offset |= obj.NOSPLIT
+			}
+
+			p.To.Offset = int64(autosize)
+
+			q = p
+
+			if ctxt.Flag_shared && cursym.Name != "runtime.duffzero" && cursym.Name != "runtime.duffcopy" && cursym.Name != "runtime.stackBarrier" {
+				// When compiling Go into PIC, all functions must start
+				// with instructions to load the TOC pointer into r2:
+				//
+				//	addis r2, r12, .TOC.-func@ha
+				//	addi r2, r2, .TOC.-func@l+4
+				//
+				// We could probably skip this prologue in some situations
+				// but it's a bit subtle. However, it is both safe and
+				// necessary to leave the prologue off duffzero and
+				// duffcopy as we rely on being able to jump to a specific
+				// instruction offset for them, and stackBarrier is only
+				// ever called from an overwritten LR-save slot on the
+				// stack (when r12 will not be remotely the right thing)
+				// but fortunately does not access global data.
+				//
+				// These are AWORDS because there is no (afaict) way to
+				// generate the addis instruction except as part of the
+				// load of a large constant, and in that case there is no
+				// way to use r12 as the source.
+				q = obj.Appendp(ctxt, q)
+				q.As = AWORD
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = 0x3c4c0000
+				q = obj.Appendp(ctxt, q)
+				q.As = AWORD
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = 0x38420000
+				rel := obj.Addrel(ctxt.Cursym)
+				rel.Off = 0
+				rel.Siz = 8
+				rel.Sym = obj.Linklookup(ctxt, ".TOC.", 0)
+				rel.Type = obj.R_ADDRPOWER_PCREL
+			}
+
+			if cursym.Text.From3.Offset&obj.NOSPLIT == 0 {
+				q = stacksplit(ctxt, q, autosize) // emit split check
+			}
+
+			if autosize != 0 {
+				// Make sure to save link register for non-empty frame, even if
+				// it is a leaf function, so that traceback works.
+				if cursym.Text.Mark&LEAF == 0 && autosize >= -BIG && autosize <= BIG {
+					// Use MOVDU to adjust R1 when saving R31, if autosize is small.
+					q = obj.Appendp(ctxt, q)
+					q.As = AMOVD
+					q.Lineno = p.Lineno
+					q.From.Type = obj.TYPE_REG
+					q.From.Reg = REG_LR
+					q.To.Type = obj.TYPE_REG
+					q.To.Reg = REGTMP
+
+					q = obj.Appendp(ctxt, q)
+					q.As = AMOVDU
+					q.Lineno = p.Lineno
+					q.From.Type = obj.TYPE_REG
+					q.From.Reg = REGTMP
+					q.To.Type = obj.TYPE_MEM
+					q.To.Offset = int64(-autosize)
+					q.To.Reg = REGSP
+					q.Spadj = int32(autosize)
+				} else {
+					// Frame size is too large for a MOVDU instruction.
+					// Store link register before decrementing SP, so if a signal comes
+					// during the execution of the function prologue, the traceback
+					// code will not see a half-updated stack frame.
+					q = obj.Appendp(ctxt, q)
+					q.As = AMOVD
+					q.Lineno = p.Lineno
+					q.From.Type = obj.TYPE_REG
+					q.From.Reg = REG_LR
+					q.To.Type = obj.TYPE_REG
+					q.To.Reg = REG_R29 // REGTMP may be used to synthesize large offset in the next instruction
+
+					q = obj.Appendp(ctxt, q)
+					q.As = AMOVD
+					q.Lineno = p.Lineno
+					q.From.Type = obj.TYPE_REG
+					q.From.Reg = REG_R29
+					q.To.Type = obj.TYPE_MEM
+					q.To.Offset = int64(-autosize)
+					q.To.Reg = REGSP
+
+					q = obj.Appendp(ctxt, q)
+					q.As = AADD
+					q.Lineno = p.Lineno
+					q.From.Type = obj.TYPE_CONST
+					q.From.Offset = int64(-autosize)
+					q.To.Type = obj.TYPE_REG
+					q.To.Reg = REGSP
+					q.Spadj = +autosize
+				}
+			} else if cursym.Text.Mark&LEAF == 0 {
+				// A very few functions that do not return to their caller
+				// (e.g. gogo) are not identified as leaves but still have
+				// no frame.
+				cursym.Text.Mark |= LEAF
+			}
+
+			if cursym.Text.Mark&LEAF != 0 {
+				cursym.Set(obj.AttrLeaf, true)
+				break
+			}
+
+			if ctxt.Flag_shared {
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R2
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REGSP
+				q.To.Offset = 24
+			}
+
+			if cursym.Text.From3.Offset&obj.WRAPPER != 0 {
+				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+				//
+				//	MOVD g_panic(g), R3
+				//	CMP R0, R3
+				//	BEQ end
+				//	MOVD panic_argp(R3), R4
+				//	ADD $(autosize+8), R1, R5
+				//	CMP R4, R5
+				//	BNE end
+				//	ADD $8, R1, R6
+				//	MOVD R6, panic_argp(R3)
+				// end:
+				//	NOP
+				//
+				// The NOP is needed to give the jumps somewhere to land.
+				// It is a liblink NOP, not a ppc64 NOP: it encodes to 0 instruction bytes.
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REGG
+				q.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R3
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ACMP
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R0
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R3
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABEQ
+				q.To.Type = obj.TYPE_BRANCH
+				p1 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REG_R3
+				q.From.Offset = 0 // Panic.argp
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R4
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize) + ctxt.FixedFrameSize()
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R5
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ACMP
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R4
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R5
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABNE
+				q.To.Type = obj.TYPE_BRANCH
+				p2 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = ctxt.FixedFrameSize()
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R6
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R6
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REG_R3
+				q.To.Offset = 0 // Panic.argp
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = obj.ANOP
+				p1.Pcond = q
+				p2.Pcond = q
+			}
+
+		case obj.ARET:
+			if p.From.Type == obj.TYPE_CONST {
+				ctxt.Diag("using BECOME (%v) is not supported!", p)
+				break
+			}
+
+			retTarget := p.To.Sym
+
+			if cursym.Text.Mark&LEAF != 0 {
+				if autosize == 0 {
+					p.As = ABR
+					p.From = obj.Addr{}
+					if retTarget == nil {
+						p.To.Type = obj.TYPE_REG
+						p.To.Reg = REG_LR
+					} else {
+						p.To.Type = obj.TYPE_BRANCH
+						p.To.Sym = retTarget
+					}
+					p.Mark |= BRANCH
+					break
+				}
+
+				p.As = AADD
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = int64(autosize)
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGSP
+				p.Spadj = -autosize
+
+				q = ctxt.NewProg()
+				q.As = ABR
+				q.Lineno = p.Lineno
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_LR
+				q.Mark |= BRANCH
+				q.Spadj = +autosize
+
+				q.Link = p.Link
+				p.Link = q
+				break
+			}
+
+			p.As = AMOVD
+			p.From.Type = obj.TYPE_MEM
+			p.From.Offset = 0
+			p.From.Reg = REGSP
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REGTMP
+
+			q = ctxt.NewProg()
+			q.As = AMOVD
+			q.Lineno = p.Lineno
+			q.From.Type = obj.TYPE_REG
+			q.From.Reg = REGTMP
+			q.To.Type = obj.TYPE_REG
+			q.To.Reg = REG_LR
+
+			q.Link = p.Link
+			p.Link = q
+			p = q
+
+			if false {
+				// Debug bad returns
+				q = ctxt.NewProg()
+
+				q.As = AMOVD
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_MEM
+				q.From.Offset = 0
+				q.From.Reg = REGTMP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGTMP
+
+				q.Link = p.Link
+				p.Link = q
+				p = q
+			}
+
+			if autosize != 0 {
+				q = ctxt.NewProg()
+				q.As = AADD
+				q.Lineno = p.Lineno
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize)
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = -autosize
+
+				q.Link = p.Link
+				p.Link = q
+			}
+
+			q1 = ctxt.NewProg()
+			q1.As = ABR
+			q1.Lineno = p.Lineno
+			if retTarget == nil {
+				q1.To.Type = obj.TYPE_REG
+				q1.To.Reg = REG_LR
+			} else {
+				q1.To.Type = obj.TYPE_BRANCH
+				q1.To.Sym = retTarget
+			}
+			q1.Mark |= BRANCH
+			q1.Spadj = +autosize
+
+			q1.Link = q.Link
+			q.Link = q1
+		case AADD:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
+				p.Spadj = int32(-p.From.Offset)
+			}
+		}
+	}
+}
+
+/*
+// instruction scheduling
+	if(debug['Q'] == 0)
+		return;
+
+	curtext = nil;
+	q = nil;	// p - 1
+	q1 = firstp;	// top of block
+	o = 0;		// count of instructions
+	for(p = firstp; p != nil; p = p1) {
+		p1 = p->link;
+		o++;
+		if(p->mark & NOSCHED){
+			if(q1 != p){
+				sched(q1, q);
+			}
+			for(; p != nil; p = p->link){
+				if(!(p->mark & NOSCHED))
+					break;
+				q = p;
+			}
+			p1 = p;
+			q1 = p;
+			o = 0;
+			continue;
+		}
+		if(p->mark & (LABEL|SYNC)) {
+			if(q1 != p)
+				sched(q1, q);
+			q1 = p;
+			o = 1;
+		}
+		if(p->mark & (BRANCH|SYNC)) {
+			sched(q1, p);
+			q1 = p1;
+			o = 0;
+		}
+		if(o >= NSCHED) {
+			sched(q1, p);
+			q1 = p1;
+			o = 0;
+		}
+		q = p;
+	}
+*/
+func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
+	p0 := p // save entry point, but skipping the two instructions setting R2 in shared mode
+
+	// MOVD	g_stackguard(g), R3
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVD
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REGG
+	p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+	if ctxt.Cursym.CFunc() {
+		p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+	}
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R3
+
+	var q *obj.Prog
+	if framesize <= obj.StackSmall {
+		// small stack: SP < stackguard
+		//	CMP	stackguard, SP
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ACMPU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGSP
+	} else if framesize <= obj.StackBig {
+		// large stack: SP-framesize < stackguard-StackSmall
+		//	ADD $-framesize, SP, R4
+		//	CMP stackguard, R4
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AADD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(-framesize)
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMPU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+	} else {
+		// Such a large stack we need to protect against wraparound.
+		// If SP is close to zero:
+		//	SP-stackguard+StackGuard <= framesize + (StackGuard-StackSmall)
+		// The +StackGuard on both sides is required to keep the left side positive:
+		// SP is allowed to be slightly below stackguard. See stack.h.
+		//
+		// Preemption sets stackguard to StackPreempt, a very large value.
+		// That breaks the math above, so we have to check for that explicitly.
+		//	// stackguard is R3
+		//	CMP	R3, $StackPreempt
+		//	BEQ	label-of-call-to-morestack
+		//	ADD	$StackGuard, SP, R4
+		//	SUB	R3, R4
+		//	MOVD	$(framesize+(StackGuard-StackSmall)), R31
+		//	CMPU	R31, R4
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.To.Type = obj.TYPE_CONST
+		p.To.Offset = obj.StackPreempt
+
+		p = obj.Appendp(ctxt, p)
+		q = p
+		p.As = ABEQ
+		p.To.Type = obj.TYPE_BRANCH
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AADD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = obj.StackGuard
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASUB
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(framesize) + obj.StackGuard - obj.StackSmall
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGTMP
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMPU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGTMP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+	}
+
+	// q1: BLT	done
+	p = obj.Appendp(ctxt, p)
+	q1 := p
+
+	p.As = ABLT
+	p.To.Type = obj.TYPE_BRANCH
+
+	// MOVD	LR, R5
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVD
+	p.From.Type = obj.TYPE_REG
+	p.From.Reg = REG_LR
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R5
+	if q != nil {
+		q.Pcond = p
+	}
+
+	var morestacksym *obj.LSym
+	if ctxt.Cursym.CFunc() {
+		morestacksym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
+	} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
+		morestacksym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
+	} else {
+		morestacksym = obj.Linklookup(ctxt, "runtime.morestack", 0)
+	}
+
+	if ctxt.Flag_shared {
+		// In PPC64 PIC code, R2 is used as TOC pointer derived from R12
+		// which is the address of function entry point when entering
+		// the function. We need to preserve R2 across call to morestack.
+		// Fortunately, in shared mode, 8(SP) and 16(SP) are reserved in
+		// the caller's frame, but not used (0(SP) is caller's saved LR,
+		// 24(SP) is caller's saved R2). Use 8(SP) to save this function's R2.
+
+		// MOVD R12, 8(SP)
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R2
+		p.To.Type = obj.TYPE_MEM
+		p.To.Reg = REGSP
+		p.To.Offset = 8
+	}
+
+	if ctxt.Flag_dynlink {
+		// Avoid calling morestack via a PLT when dynamically linking. The
+		// PLT stubs generated by the system linker on ppc64le when "std r2,
+		// 24(r1)" to save the TOC pointer in their callers stack
+		// frame. Unfortunately (and necessarily) morestack is called before
+		// the function that calls it sets up its frame and so the PLT ends
+		// up smashing the saved TOC pointer for its caller's caller.
+		//
+		// According to the ABI documentation there is a mechanism to avoid
+		// the TOC save that the PLT stub does (put a R_PPC64_TOCSAVE
+		// relocation on the nop after the call to morestack) but at the time
+		// of writing it is not supported at all by gold and my attempt to
+		// use it with ld.bfd caused an internal linker error. So this hack
+		// seems preferable.
+
+		// MOVD $runtime.morestack(SB), R12
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_MEM
+		p.From.Sym = morestacksym
+		p.From.Name = obj.NAME_GOTREF
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R12
+
+		// MOVD R12, CTR
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R12
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_CTR
+
+		// BL CTR
+		p = obj.Appendp(ctxt, p)
+		p.As = obj.ACALL
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R12
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_CTR
+	} else {
+		// BL	runtime.morestack(SB)
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ABL
+		p.To.Type = obj.TYPE_BRANCH
+		p.To.Sym = morestacksym
+	}
+
+	if ctxt.Flag_shared {
+		// MOVD 8(SP), R2
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REGSP
+		p.From.Offset = 8
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R2
+	}
+
+	// BR	start
+	p = obj.Appendp(ctxt, p)
+	p.As = ABR
+	p.To.Type = obj.TYPE_BRANCH
+	p.Pcond = p0.Link
+
+	// placeholder for q1's jump target
+	p = obj.Appendp(ctxt, p)
+
+	p.As = obj.ANOP // zero-width place holder
+	q1.Pcond = p
+
+	return p
+}
+
+func follow(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	firstp := ctxt.NewProg()
+	lastp := firstp
+	xfol(ctxt, s.Text, &lastp)
+	lastp.Link = nil
+	s.Text = firstp.Link
+}
+
+func relinv(a obj.As) obj.As {
+	switch a {
+	case ABEQ:
+		return ABNE
+	case ABNE:
+		return ABEQ
+
+	case ABGE:
+		return ABLT
+	case ABLT:
+		return ABGE
+
+	case ABGT:
+		return ABLE
+	case ABLE:
+		return ABGT
+
+	case ABVC:
+		return ABVS
+	case ABVS:
+		return ABVC
+	}
+
+	return 0
+}
+
+func xfol(ctxt *obj.Link, p *obj.Prog, last **obj.Prog) {
+	var q *obj.Prog
+	var r *obj.Prog
+	var b obj.As
+	var i int
+
+loop:
+	if p == nil {
+		return
+	}
+	a := p.As
+	if a == ABR {
+		q = p.Pcond
+		if (p.Mark&NOSCHED != 0) || q != nil && (q.Mark&NOSCHED != 0) {
+			p.Mark |= FOLL
+			(*last).Link = p
+			*last = p
+			p = p.Link
+			xfol(ctxt, p, last)
+			p = q
+			if p != nil && p.Mark&FOLL == 0 {
+				goto loop
+			}
+			return
+		}
+
+		if q != nil {
+			p.Mark |= FOLL
+			p = q
+			if p.Mark&FOLL == 0 {
+				goto loop
+			}
+		}
+	}
+
+	if p.Mark&FOLL != 0 {
+		i = 0
+		q = p
+		for ; i < 4; i, q = i+1, q.Link {
+			if q == *last || (q.Mark&NOSCHED != 0) {
+				break
+			}
+			b = 0 /* set */
+			a = q.As
+			if a == obj.ANOP {
+				i--
+				continue
+			}
+
+			if a == ABR || a == obj.ARET || a == ARFI || a == ARFCI || a == ARFID || a == AHRFID {
+				goto copy
+			}
+			if q.Pcond == nil || (q.Pcond.Mark&FOLL != 0) {
+				continue
+			}
+			b = relinv(a)
+			if b == 0 {
+				continue
+			}
+
+		copy:
+			for {
+				r = ctxt.NewProg()
+				*r = *p
+				if r.Mark&FOLL == 0 {
+					fmt.Printf("can't happen 1\n")
+				}
+				r.Mark |= FOLL
+				if p != q {
+					p = p.Link
+					(*last).Link = r
+					*last = r
+					continue
+				}
+
+				(*last).Link = r
+				*last = r
+				if a == ABR || a == obj.ARET || a == ARFI || a == ARFCI || a == ARFID || a == AHRFID {
+					return
+				}
+				r.As = b
+				r.Pcond = p.Link
+				r.Link = p.Pcond
+				if r.Link.Mark&FOLL == 0 {
+					xfol(ctxt, r.Link, last)
+				}
+				if r.Pcond.Mark&FOLL == 0 {
+					fmt.Printf("can't happen 2\n")
+				}
+				return
+			}
+		}
+
+		a = ABR
+		q = ctxt.NewProg()
+		q.As = a
+		q.Lineno = p.Lineno
+		q.To.Type = obj.TYPE_BRANCH
+		q.To.Offset = p.Pc
+		q.Pcond = p
+		p = q
+	}
+
+	p.Mark |= FOLL
+	(*last).Link = p
+	*last = p
+	if a == ABR || a == obj.ARET || a == ARFI || a == ARFCI || a == ARFID || a == AHRFID {
+		if p.Mark&NOSCHED != 0 {
+			p = p.Link
+			goto loop
+		}
+
+		return
+	}
+
+	if p.Pcond != nil {
+		if a != ABL && p.Link != nil {
+			xfol(ctxt, p.Link, last)
+			p = p.Pcond
+			if p == nil || (p.Mark&FOLL != 0) {
+				return
+			}
+			goto loop
+		}
+	}
+
+	p = p.Link
+	goto loop
+}
+
+var Linkppc64 = obj.LinkArch{
+	Arch:       sys.ArchPPC64,
+	Preprocess: preprocess,
+	Assemble:   span9,
+	Follow:     follow,
+	Progedit:   progedit,
+}
+
+var Linkppc64le = obj.LinkArch{
+	Arch:       sys.ArchPPC64LE,
+	Preprocess: preprocess,
+	Assemble:   span9,
+	Follow:     follow,
+	Progedit:   progedit,
+}
diff --git a/vendor/github.com/google/gops/internal/obj/reloctype_string.go b/vendor/github.com/google/gops/internal/obj/reloctype_string.go
new file mode 100644
index 00000000..6de617cd
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/reloctype_string.go
@@ -0,0 +1,17 @@
+// Code generated by "stringer -type=RelocType"; DO NOT EDIT
+
+package obj
+
+import "fmt"
+
+const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_METHODOFFR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_PCRELDBLR_ADDRMIPSUR_ADDRMIPSTLS"
+
+var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 53, 59, 68, 79, 88, 99, 109, 116, 123, 131, 139, 147, 153, 159, 165, 175, 184, 195, 206, 216, 225, 235, 249, 263, 279, 293, 307, 318, 332, 347, 364, 382, 403, 413, 424, 437}
+
+func (i RelocType) String() string {
+	i -= 1
+	if i < 0 || i >= RelocType(len(_RelocType_index)-1) {
+		return fmt.Sprintf("RelocType(%d)", i+1)
+	}
+	return _RelocType_name[_RelocType_index[i]:_RelocType_index[i+1]]
+}
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/a.out.go b/vendor/github.com/google/gops/internal/obj/s390x/a.out.go
new file mode 100644
index 00000000..df7192f3
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/a.out.go
@@ -0,0 +1,926 @@
+// Based on cmd/internal/obj/ppc64/a.out.go.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package s390x
+
+import "github.com/google/gops/internal/obj"
+
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p s390x
+
+const (
+	NSNAME = 8
+	NSYM   = 50
+	NREG   = 16 // number of general purpose registers
+	NFREG  = 16 // number of floating point registers
+)
+
+const (
+	// General purpose registers (GPRs).
+	REG_R0 = obj.RBaseS390X + iota
+	REG_R1
+	REG_R2
+	REG_R3
+	REG_R4
+	REG_R5
+	REG_R6
+	REG_R7
+	REG_R8
+	REG_R9
+	REG_R10
+	REG_R11
+	REG_R12
+	REG_R13
+	REG_R14
+	REG_R15
+
+	// Floating point registers (FPRs).
+	REG_F0
+	REG_F1
+	REG_F2
+	REG_F3
+	REG_F4
+	REG_F5
+	REG_F6
+	REG_F7
+	REG_F8
+	REG_F9
+	REG_F10
+	REG_F11
+	REG_F12
+	REG_F13
+	REG_F14
+	REG_F15
+
+	// Vector registers (VRs) - only available when the vector
+	// facility is installed.
+	// V0-V15 are aliases for F0-F15.
+	// We keep them in a separate space to make printing etc. easier
+	// If the code generator ever emits vector instructions it will
+	// need to take into account the aliasing.
+	REG_V0
+	REG_V1
+	REG_V2
+	REG_V3
+	REG_V4
+	REG_V5
+	REG_V6
+	REG_V7
+	REG_V8
+	REG_V9
+	REG_V10
+	REG_V11
+	REG_V12
+	REG_V13
+	REG_V14
+	REG_V15
+	REG_V16
+	REG_V17
+	REG_V18
+	REG_V19
+	REG_V20
+	REG_V21
+	REG_V22
+	REG_V23
+	REG_V24
+	REG_V25
+	REG_V26
+	REG_V27
+	REG_V28
+	REG_V29
+	REG_V30
+	REG_V31
+
+	// Access registers (ARs).
+	// The thread pointer is typically stored in the register pair
+	// AR0 and AR1.
+	REG_AR0
+	REG_AR1
+	REG_AR2
+	REG_AR3
+	REG_AR4
+	REG_AR5
+	REG_AR6
+	REG_AR7
+	REG_AR8
+	REG_AR9
+	REG_AR10
+	REG_AR11
+	REG_AR12
+	REG_AR13
+	REG_AR14
+	REG_AR15
+
+	REG_RESERVED // end of allocated registers
+
+	REGZERO = REG_R0  // set to zero
+	REGARG  = -1      // -1 disables passing the first argument in register
+	REGRT1  = REG_R3  // used during zeroing of the stack - not reserved
+	REGRT2  = REG_R4  // used during zeroing of the stack - not reserved
+	REGTMP  = REG_R10 // scratch register used in the assembler and linker
+	REGTMP2 = REG_R11 // scratch register used in the assembler and linker
+	REGCTXT = REG_R12 // context for closures
+	REGG    = REG_R13 // G
+	REG_LR  = REG_R14 // link register
+	REGSP   = REG_R15 // stack pointer
+)
+
+const (
+	BIG    = 32768 - 8
+	DISP12 = 4096
+	DISP16 = 65536
+	DISP20 = 1048576
+)
+
+const (
+	// mark flags
+	LABEL   = 1 << 0
+	LEAF    = 1 << 1
+	FLOAT   = 1 << 2
+	BRANCH  = 1 << 3
+	LOAD    = 1 << 4
+	FCMP    = 1 << 5
+	SYNC    = 1 << 6
+	LIST    = 1 << 7
+	FOLL    = 1 << 8
+	NOSCHED = 1 << 9
+)
+
+const ( // comments from func aclass in asmz.go
+	C_NONE     = iota
+	C_REG      // general-purpose register (64-bit)
+	C_FREG     // floating-point register (64-bit)
+	C_VREG     // vector register (128-bit)
+	C_AREG     // access register (32-bit)
+	C_ZCON     // constant == 0
+	C_SCON     // 0 <= constant <= 0x7fff (positive int16)
+	C_UCON     // constant & 0xffff == 0 (int16 or uint16)
+	C_ADDCON   // 0 > constant >= -0x8000 (negative int16)
+	C_ANDCON   // constant <= 0xffff
+	C_LCON     // constant (int32 or uint32)
+	C_DCON     // constant (int64 or uint64)
+	C_SACON    // computed address, 16-bit displacement, possibly SP-relative
+	C_LACON    // computed address, 32-bit displacement, possibly SP-relative
+	C_DACON    // computed address, 64-bit displacment?
+	C_SBRA     // short branch
+	C_LBRA     // long branch
+	C_SAUTO    // short auto
+	C_LAUTO    // long auto
+	C_ZOREG    // heap address, register-based, displacement == 0
+	C_SOREG    // heap address, register-based, int16 displacement
+	C_LOREG    // heap address, register-based, int32 displacement
+	C_TLS_LE   // TLS - local exec model (for executables)
+	C_TLS_IE   // TLS - initial exec model (for shared libraries loaded at program startup)
+	C_GOK      // general address
+	C_ADDR     // relocation for extern or static symbols (loads and stores)
+	C_SYMADDR  // relocation for extern or static symbols (address taking)
+	C_GOTADDR  // GOT slot for a symbol in -dynlink mode
+	C_TEXTSIZE // text size
+	C_ANY
+	C_NCLASS // must be the last
+)
+
+const (
+	// integer arithmetic
+	AADD = obj.ABaseS390X + obj.A_ARCHSPECIFIC + iota
+	AADDC
+	AADDE
+	AADDW
+	ADIVW
+	ADIVWU
+	ADIVD
+	ADIVDU
+	AMODW
+	AMODWU
+	AMODD
+	AMODDU
+	AMULLW
+	AMULLD
+	AMULHD
+	AMULHDU
+	ASUB
+	ASUBC
+	ASUBV
+	ASUBE
+	ASUBW
+	ANEG
+	ANEGW
+
+	// integer moves
+	AMOVWBR
+	AMOVB
+	AMOVBZ
+	AMOVH
+	AMOVHBR
+	AMOVHZ
+	AMOVW
+	AMOVWZ
+	AMOVD
+	AMOVDBR
+
+	// conditional moves
+	AMOVDEQ
+	AMOVDGE
+	AMOVDGT
+	AMOVDLE
+	AMOVDLT
+	AMOVDNE
+
+	// find leftmost one
+	AFLOGR
+
+	// integer bitwise
+	AAND
+	AANDW
+	AOR
+	AORW
+	AXOR
+	AXORW
+	ASLW
+	ASLD
+	ASRW
+	ASRAW
+	ASRD
+	ASRAD
+	ARLL
+	ARLLG
+
+	// floating point
+	AFABS
+	AFADD
+	AFADDS
+	AFCMPO
+	AFCMPU
+	ACEBR
+	AFDIV
+	AFDIVS
+	AFMADD
+	AFMADDS
+	AFMOVD
+	AFMOVS
+	AFMSUB
+	AFMSUBS
+	AFMUL
+	AFMULS
+	AFNABS
+	AFNEG
+	AFNEGS
+	AFNMADD
+	AFNMADDS
+	AFNMSUB
+	AFNMSUBS
+	ALEDBR
+	ALDEBR
+	AFSUB
+	AFSUBS
+	AFSQRT
+	AFSQRTS
+	AFIEBR
+	AFIDBR
+
+	// convert from int32/int64 to float/float64
+	ACEFBRA
+	ACDFBRA
+	ACEGBRA
+	ACDGBRA
+
+	// convert from float/float64 to int32/int64
+	ACFEBRA
+	ACFDBRA
+	ACGEBRA
+	ACGDBRA
+
+	// convert from uint32/uint64 to float/float64
+	ACELFBR
+	ACDLFBR
+	ACELGBR
+	ACDLGBR
+
+	// convert from float/float64 to uint32/uint64
+	ACLFEBR
+	ACLFDBR
+	ACLGEBR
+	ACLGDBR
+
+	// compare
+	ACMP
+	ACMPU
+	ACMPW
+	ACMPWU
+
+	// compare and swap
+	ACS
+	ACSG
+
+	// serialize
+	ASYNC
+
+	// branch
+	ABC
+	ABCL
+	ABEQ
+	ABGE
+	ABGT
+	ABLE
+	ABLT
+	ABLEU
+	ABLTU
+	ABNE
+	ABVC
+	ABVS
+	ASYSCALL
+
+	// compare and branch
+	ACMPBEQ
+	ACMPBGE
+	ACMPBGT
+	ACMPBLE
+	ACMPBLT
+	ACMPBNE
+	ACMPUBEQ
+	ACMPUBGE
+	ACMPUBGT
+	ACMPUBLE
+	ACMPUBLT
+	ACMPUBNE
+
+	// storage-and-storage
+	AMVC
+	ACLC
+	AXC
+	AOC
+	ANC
+
+	// load
+	AEXRL
+	ALARL
+	ALA
+	ALAY
+
+	// interlocked load and op
+	ALAA
+	ALAAG
+	ALAAL
+	ALAALG
+	ALAN
+	ALANG
+	ALAX
+	ALAXG
+	ALAO
+	ALAOG
+
+	// load/store multiple
+	ALMY
+	ALMG
+	ASTMY
+	ASTMG
+
+	// store clock
+	ASTCK
+	ASTCKC
+	ASTCKE
+	ASTCKF
+
+	// macros
+	ACLEAR
+
+	// vector
+	AVA
+	AVAB
+	AVAH
+	AVAF
+	AVAG
+	AVAQ
+	AVACC
+	AVACCB
+	AVACCH
+	AVACCF
+	AVACCG
+	AVACCQ
+	AVAC
+	AVACQ
+	AVACCC
+	AVACCCQ
+	AVN
+	AVNC
+	AVAVG
+	AVAVGB
+	AVAVGH
+	AVAVGF
+	AVAVGG
+	AVAVGL
+	AVAVGLB
+	AVAVGLH
+	AVAVGLF
+	AVAVGLG
+	AVCKSM
+	AVCEQ
+	AVCEQB
+	AVCEQH
+	AVCEQF
+	AVCEQG
+	AVCEQBS
+	AVCEQHS
+	AVCEQFS
+	AVCEQGS
+	AVCH
+	AVCHB
+	AVCHH
+	AVCHF
+	AVCHG
+	AVCHBS
+	AVCHHS
+	AVCHFS
+	AVCHGS
+	AVCHL
+	AVCHLB
+	AVCHLH
+	AVCHLF
+	AVCHLG
+	AVCHLBS
+	AVCHLHS
+	AVCHLFS
+	AVCHLGS
+	AVCLZ
+	AVCLZB
+	AVCLZH
+	AVCLZF
+	AVCLZG
+	AVCTZ
+	AVCTZB
+	AVCTZH
+	AVCTZF
+	AVCTZG
+	AVEC
+	AVECB
+	AVECH
+	AVECF
+	AVECG
+	AVECL
+	AVECLB
+	AVECLH
+	AVECLF
+	AVECLG
+	AVERIM
+	AVERIMB
+	AVERIMH
+	AVERIMF
+	AVERIMG
+	AVERLL
+	AVERLLB
+	AVERLLH
+	AVERLLF
+	AVERLLG
+	AVERLLV
+	AVERLLVB
+	AVERLLVH
+	AVERLLVF
+	AVERLLVG
+	AVESLV
+	AVESLVB
+	AVESLVH
+	AVESLVF
+	AVESLVG
+	AVESL
+	AVESLB
+	AVESLH
+	AVESLF
+	AVESLG
+	AVESRA
+	AVESRAB
+	AVESRAH
+	AVESRAF
+	AVESRAG
+	AVESRAV
+	AVESRAVB
+	AVESRAVH
+	AVESRAVF
+	AVESRAVG
+	AVESRL
+	AVESRLB
+	AVESRLH
+	AVESRLF
+	AVESRLG
+	AVESRLV
+	AVESRLVB
+	AVESRLVH
+	AVESRLVF
+	AVESRLVG
+	AVX
+	AVFAE
+	AVFAEB
+	AVFAEH
+	AVFAEF
+	AVFAEBS
+	AVFAEHS
+	AVFAEFS
+	AVFAEZB
+	AVFAEZH
+	AVFAEZF
+	AVFAEZBS
+	AVFAEZHS
+	AVFAEZFS
+	AVFEE
+	AVFEEB
+	AVFEEH
+	AVFEEF
+	AVFEEBS
+	AVFEEHS
+	AVFEEFS
+	AVFEEZB
+	AVFEEZH
+	AVFEEZF
+	AVFEEZBS
+	AVFEEZHS
+	AVFEEZFS
+	AVFENE
+	AVFENEB
+	AVFENEH
+	AVFENEF
+	AVFENEBS
+	AVFENEHS
+	AVFENEFS
+	AVFENEZB
+	AVFENEZH
+	AVFENEZF
+	AVFENEZBS
+	AVFENEZHS
+	AVFENEZFS
+	AVFA
+	AVFADB
+	AWFADB
+	AWFK
+	AWFKDB
+	AVFCE
+	AVFCEDB
+	AVFCEDBS
+	AWFCEDB
+	AWFCEDBS
+	AVFCH
+	AVFCHDB
+	AVFCHDBS
+	AWFCHDB
+	AWFCHDBS
+	AVFCHE
+	AVFCHEDB
+	AVFCHEDBS
+	AWFCHEDB
+	AWFCHEDBS
+	AWFC
+	AWFCDB
+	AVCDG
+	AVCDGB
+	AWCDGB
+	AVCDLG
+	AVCDLGB
+	AWCDLGB
+	AVCGD
+	AVCGDB
+	AWCGDB
+	AVCLGD
+	AVCLGDB
+	AWCLGDB
+	AVFD
+	AVFDDB
+	AWFDDB
+	AVLDE
+	AVLDEB
+	AWLDEB
+	AVLED
+	AVLEDB
+	AWLEDB
+	AVFM
+	AVFMDB
+	AWFMDB
+	AVFMA
+	AVFMADB
+	AWFMADB
+	AVFMS
+	AVFMSDB
+	AWFMSDB
+	AVFPSO
+	AVFPSODB
+	AWFPSODB
+	AVFLCDB
+	AWFLCDB
+	AVFLNDB
+	AWFLNDB
+	AVFLPDB
+	AWFLPDB
+	AVFSQ
+	AVFSQDB
+	AWFSQDB
+	AVFS
+	AVFSDB
+	AWFSDB
+	AVFTCI
+	AVFTCIDB
+	AWFTCIDB
+	AVGFM
+	AVGFMB
+	AVGFMH
+	AVGFMF
+	AVGFMG
+	AVGFMA
+	AVGFMAB
+	AVGFMAH
+	AVGFMAF
+	AVGFMAG
+	AVGEF
+	AVGEG
+	AVGBM
+	AVZERO
+	AVONE
+	AVGM
+	AVGMB
+	AVGMH
+	AVGMF
+	AVGMG
+	AVISTR
+	AVISTRB
+	AVISTRH
+	AVISTRF
+	AVISTRBS
+	AVISTRHS
+	AVISTRFS
+	AVL
+	AVLR
+	AVLREP
+	AVLREPB
+	AVLREPH
+	AVLREPF
+	AVLREPG
+	AVLC
+	AVLCB
+	AVLCH
+	AVLCF
+	AVLCG
+	AVLEH
+	AVLEF
+	AVLEG
+	AVLEB
+	AVLEIH
+	AVLEIF
+	AVLEIG
+	AVLEIB
+	AVFI
+	AVFIDB
+	AWFIDB
+	AVLGV
+	AVLGVB
+	AVLGVH
+	AVLGVF
+	AVLGVG
+	AVLLEZ
+	AVLLEZB
+	AVLLEZH
+	AVLLEZF
+	AVLLEZG
+	AVLM
+	AVLP
+	AVLPB
+	AVLPH
+	AVLPF
+	AVLPG
+	AVLBB
+	AVLVG
+	AVLVGB
+	AVLVGH
+	AVLVGF
+	AVLVGG
+	AVLVGP
+	AVLL
+	AVMX
+	AVMXB
+	AVMXH
+	AVMXF
+	AVMXG
+	AVMXL
+	AVMXLB
+	AVMXLH
+	AVMXLF
+	AVMXLG
+	AVMRH
+	AVMRHB
+	AVMRHH
+	AVMRHF
+	AVMRHG
+	AVMRL
+	AVMRLB
+	AVMRLH
+	AVMRLF
+	AVMRLG
+	AVMN
+	AVMNB
+	AVMNH
+	AVMNF
+	AVMNG
+	AVMNL
+	AVMNLB
+	AVMNLH
+	AVMNLF
+	AVMNLG
+	AVMAE
+	AVMAEB
+	AVMAEH
+	AVMAEF
+	AVMAH
+	AVMAHB
+	AVMAHH
+	AVMAHF
+	AVMALE
+	AVMALEB
+	AVMALEH
+	AVMALEF
+	AVMALH
+	AVMALHB
+	AVMALHH
+	AVMALHF
+	AVMALO
+	AVMALOB
+	AVMALOH
+	AVMALOF
+	AVMAL
+	AVMALB
+	AVMALHW
+	AVMALF
+	AVMAO
+	AVMAOB
+	AVMAOH
+	AVMAOF
+	AVME
+	AVMEB
+	AVMEH
+	AVMEF
+	AVMH
+	AVMHB
+	AVMHH
+	AVMHF
+	AVMLE
+	AVMLEB
+	AVMLEH
+	AVMLEF
+	AVMLH
+	AVMLHB
+	AVMLHH
+	AVMLHF
+	AVMLO
+	AVMLOB
+	AVMLOH
+	AVMLOF
+	AVML
+	AVMLB
+	AVMLHW
+	AVMLF
+	AVMO
+	AVMOB
+	AVMOH
+	AVMOF
+	AVNO
+	AVNOT
+	AVO
+	AVPK
+	AVPKH
+	AVPKF
+	AVPKG
+	AVPKLS
+	AVPKLSH
+	AVPKLSF
+	AVPKLSG
+	AVPKLSHS
+	AVPKLSFS
+	AVPKLSGS
+	AVPKS
+	AVPKSH
+	AVPKSF
+	AVPKSG
+	AVPKSHS
+	AVPKSFS
+	AVPKSGS
+	AVPERM
+	AVPDI
+	AVPOPCT
+	AVREP
+	AVREPB
+	AVREPH
+	AVREPF
+	AVREPG
+	AVREPI
+	AVREPIB
+	AVREPIH
+	AVREPIF
+	AVREPIG
+	AVSCEF
+	AVSCEG
+	AVSEL
+	AVSL
+	AVSLB
+	AVSLDB
+	AVSRA
+	AVSRAB
+	AVSRL
+	AVSRLB
+	AVSEG
+	AVSEGB
+	AVSEGH
+	AVSEGF
+	AVST
+	AVSTEH
+	AVSTEF
+	AVSTEG
+	AVSTEB
+	AVSTM
+	AVSTL
+	AVSTRC
+	AVSTRCB
+	AVSTRCH
+	AVSTRCF
+	AVSTRCBS
+	AVSTRCHS
+	AVSTRCFS
+	AVSTRCZB
+	AVSTRCZH
+	AVSTRCZF
+	AVSTRCZBS
+	AVSTRCZHS
+	AVSTRCZFS
+	AVS
+	AVSB
+	AVSH
+	AVSF
+	AVSG
+	AVSQ
+	AVSCBI
+	AVSCBIB
+	AVSCBIH
+	AVSCBIF
+	AVSCBIG
+	AVSCBIQ
+	AVSBCBI
+	AVSBCBIQ
+	AVSBI
+	AVSBIQ
+	AVSUMG
+	AVSUMGH
+	AVSUMGF
+	AVSUMQ
+	AVSUMQF
+	AVSUMQG
+	AVSUM
+	AVSUMB
+	AVSUMH
+	AVTM
+	AVUPH
+	AVUPHB
+	AVUPHH
+	AVUPHF
+	AVUPLH
+	AVUPLHB
+	AVUPLHH
+	AVUPLHF
+	AVUPLL
+	AVUPLLB
+	AVUPLLH
+	AVUPLLF
+	AVUPL
+	AVUPLB
+	AVUPLHW
+	AVUPLF
+
+	// binary
+	ABYTE
+	AWORD
+	ADWORD
+
+	// end marker
+	ALAST
+
+	// aliases
+	ABR = obj.AJMP
+	ABL = obj.ACALL
+)
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/anames.go b/vendor/github.com/google/gops/internal/obj/s390x/anames.go
new file mode 100644
index 00000000..b7e49e2d
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/anames.go
@@ -0,0 +1,675 @@
+// Generated by stringer -i a.out.go -o anames.go -p s390x
+// Do not edit.
+
+package s390x
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "ADD",
+	"ADDC",
+	"ADDE",
+	"ADDW",
+	"DIVW",
+	"DIVWU",
+	"DIVD",
+	"DIVDU",
+	"MODW",
+	"MODWU",
+	"MODD",
+	"MODDU",
+	"MULLW",
+	"MULLD",
+	"MULHD",
+	"MULHDU",
+	"SUB",
+	"SUBC",
+	"SUBV",
+	"SUBE",
+	"SUBW",
+	"NEG",
+	"NEGW",
+	"MOVWBR",
+	"MOVB",
+	"MOVBZ",
+	"MOVH",
+	"MOVHBR",
+	"MOVHZ",
+	"MOVW",
+	"MOVWZ",
+	"MOVD",
+	"MOVDBR",
+	"MOVDEQ",
+	"MOVDGE",
+	"MOVDGT",
+	"MOVDLE",
+	"MOVDLT",
+	"MOVDNE",
+	"FLOGR",
+	"AND",
+	"ANDW",
+	"OR",
+	"ORW",
+	"XOR",
+	"XORW",
+	"SLW",
+	"SLD",
+	"SRW",
+	"SRAW",
+	"SRD",
+	"SRAD",
+	"RLL",
+	"RLLG",
+	"FABS",
+	"FADD",
+	"FADDS",
+	"FCMPO",
+	"FCMPU",
+	"CEBR",
+	"FDIV",
+	"FDIVS",
+	"FMADD",
+	"FMADDS",
+	"FMOVD",
+	"FMOVS",
+	"FMSUB",
+	"FMSUBS",
+	"FMUL",
+	"FMULS",
+	"FNABS",
+	"FNEG",
+	"FNEGS",
+	"FNMADD",
+	"FNMADDS",
+	"FNMSUB",
+	"FNMSUBS",
+	"LEDBR",
+	"LDEBR",
+	"FSUB",
+	"FSUBS",
+	"FSQRT",
+	"FSQRTS",
+	"FIEBR",
+	"FIDBR",
+	"CEFBRA",
+	"CDFBRA",
+	"CEGBRA",
+	"CDGBRA",
+	"CFEBRA",
+	"CFDBRA",
+	"CGEBRA",
+	"CGDBRA",
+	"CELFBR",
+	"CDLFBR",
+	"CELGBR",
+	"CDLGBR",
+	"CLFEBR",
+	"CLFDBR",
+	"CLGEBR",
+	"CLGDBR",
+	"CMP",
+	"CMPU",
+	"CMPW",
+	"CMPWU",
+	"CS",
+	"CSG",
+	"SYNC",
+	"BC",
+	"BCL",
+	"BEQ",
+	"BGE",
+	"BGT",
+	"BLE",
+	"BLT",
+	"BLEU",
+	"BLTU",
+	"BNE",
+	"BVC",
+	"BVS",
+	"SYSCALL",
+	"CMPBEQ",
+	"CMPBGE",
+	"CMPBGT",
+	"CMPBLE",
+	"CMPBLT",
+	"CMPBNE",
+	"CMPUBEQ",
+	"CMPUBGE",
+	"CMPUBGT",
+	"CMPUBLE",
+	"CMPUBLT",
+	"CMPUBNE",
+	"MVC",
+	"CLC",
+	"XC",
+	"OC",
+	"NC",
+	"EXRL",
+	"LARL",
+	"LA",
+	"LAY",
+	"LAA",
+	"LAAG",
+	"LAAL",
+	"LAALG",
+	"LAN",
+	"LANG",
+	"LAX",
+	"LAXG",
+	"LAO",
+	"LAOG",
+	"LMY",
+	"LMG",
+	"STMY",
+	"STMG",
+	"STCK",
+	"STCKC",
+	"STCKE",
+	"STCKF",
+	"CLEAR",
+	"VA",
+	"VAB",
+	"VAH",
+	"VAF",
+	"VAG",
+	"VAQ",
+	"VACC",
+	"VACCB",
+	"VACCH",
+	"VACCF",
+	"VACCG",
+	"VACCQ",
+	"VAC",
+	"VACQ",
+	"VACCC",
+	"VACCCQ",
+	"VN",
+	"VNC",
+	"VAVG",
+	"VAVGB",
+	"VAVGH",
+	"VAVGF",
+	"VAVGG",
+	"VAVGL",
+	"VAVGLB",
+	"VAVGLH",
+	"VAVGLF",
+	"VAVGLG",
+	"VCKSM",
+	"VCEQ",
+	"VCEQB",
+	"VCEQH",
+	"VCEQF",
+	"VCEQG",
+	"VCEQBS",
+	"VCEQHS",
+	"VCEQFS",
+	"VCEQGS",
+	"VCH",
+	"VCHB",
+	"VCHH",
+	"VCHF",
+	"VCHG",
+	"VCHBS",
+	"VCHHS",
+	"VCHFS",
+	"VCHGS",
+	"VCHL",
+	"VCHLB",
+	"VCHLH",
+	"VCHLF",
+	"VCHLG",
+	"VCHLBS",
+	"VCHLHS",
+	"VCHLFS",
+	"VCHLGS",
+	"VCLZ",
+	"VCLZB",
+	"VCLZH",
+	"VCLZF",
+	"VCLZG",
+	"VCTZ",
+	"VCTZB",
+	"VCTZH",
+	"VCTZF",
+	"VCTZG",
+	"VEC",
+	"VECB",
+	"VECH",
+	"VECF",
+	"VECG",
+	"VECL",
+	"VECLB",
+	"VECLH",
+	"VECLF",
+	"VECLG",
+	"VERIM",
+	"VERIMB",
+	"VERIMH",
+	"VERIMF",
+	"VERIMG",
+	"VERLL",
+	"VERLLB",
+	"VERLLH",
+	"VERLLF",
+	"VERLLG",
+	"VERLLV",
+	"VERLLVB",
+	"VERLLVH",
+	"VERLLVF",
+	"VERLLVG",
+	"VESLV",
+	"VESLVB",
+	"VESLVH",
+	"VESLVF",
+	"VESLVG",
+	"VESL",
+	"VESLB",
+	"VESLH",
+	"VESLF",
+	"VESLG",
+	"VESRA",
+	"VESRAB",
+	"VESRAH",
+	"VESRAF",
+	"VESRAG",
+	"VESRAV",
+	"VESRAVB",
+	"VESRAVH",
+	"VESRAVF",
+	"VESRAVG",
+	"VESRL",
+	"VESRLB",
+	"VESRLH",
+	"VESRLF",
+	"VESRLG",
+	"VESRLV",
+	"VESRLVB",
+	"VESRLVH",
+	"VESRLVF",
+	"VESRLVG",
+	"VX",
+	"VFAE",
+	"VFAEB",
+	"VFAEH",
+	"VFAEF",
+	"VFAEBS",
+	"VFAEHS",
+	"VFAEFS",
+	"VFAEZB",
+	"VFAEZH",
+	"VFAEZF",
+	"VFAEZBS",
+	"VFAEZHS",
+	"VFAEZFS",
+	"VFEE",
+	"VFEEB",
+	"VFEEH",
+	"VFEEF",
+	"VFEEBS",
+	"VFEEHS",
+	"VFEEFS",
+	"VFEEZB",
+	"VFEEZH",
+	"VFEEZF",
+	"VFEEZBS",
+	"VFEEZHS",
+	"VFEEZFS",
+	"VFENE",
+	"VFENEB",
+	"VFENEH",
+	"VFENEF",
+	"VFENEBS",
+	"VFENEHS",
+	"VFENEFS",
+	"VFENEZB",
+	"VFENEZH",
+	"VFENEZF",
+	"VFENEZBS",
+	"VFENEZHS",
+	"VFENEZFS",
+	"VFA",
+	"VFADB",
+	"WFADB",
+	"WFK",
+	"WFKDB",
+	"VFCE",
+	"VFCEDB",
+	"VFCEDBS",
+	"WFCEDB",
+	"WFCEDBS",
+	"VFCH",
+	"VFCHDB",
+	"VFCHDBS",
+	"WFCHDB",
+	"WFCHDBS",
+	"VFCHE",
+	"VFCHEDB",
+	"VFCHEDBS",
+	"WFCHEDB",
+	"WFCHEDBS",
+	"WFC",
+	"WFCDB",
+	"VCDG",
+	"VCDGB",
+	"WCDGB",
+	"VCDLG",
+	"VCDLGB",
+	"WCDLGB",
+	"VCGD",
+	"VCGDB",
+	"WCGDB",
+	"VCLGD",
+	"VCLGDB",
+	"WCLGDB",
+	"VFD",
+	"VFDDB",
+	"WFDDB",
+	"VLDE",
+	"VLDEB",
+	"WLDEB",
+	"VLED",
+	"VLEDB",
+	"WLEDB",
+	"VFM",
+	"VFMDB",
+	"WFMDB",
+	"VFMA",
+	"VFMADB",
+	"WFMADB",
+	"VFMS",
+	"VFMSDB",
+	"WFMSDB",
+	"VFPSO",
+	"VFPSODB",
+	"WFPSODB",
+	"VFLCDB",
+	"WFLCDB",
+	"VFLNDB",
+	"WFLNDB",
+	"VFLPDB",
+	"WFLPDB",
+	"VFSQ",
+	"VFSQDB",
+	"WFSQDB",
+	"VFS",
+	"VFSDB",
+	"WFSDB",
+	"VFTCI",
+	"VFTCIDB",
+	"WFTCIDB",
+	"VGFM",
+	"VGFMB",
+	"VGFMH",
+	"VGFMF",
+	"VGFMG",
+	"VGFMA",
+	"VGFMAB",
+	"VGFMAH",
+	"VGFMAF",
+	"VGFMAG",
+	"VGEF",
+	"VGEG",
+	"VGBM",
+	"VZERO",
+	"VONE",
+	"VGM",
+	"VGMB",
+	"VGMH",
+	"VGMF",
+	"VGMG",
+	"VISTR",
+	"VISTRB",
+	"VISTRH",
+	"VISTRF",
+	"VISTRBS",
+	"VISTRHS",
+	"VISTRFS",
+	"VL",
+	"VLR",
+	"VLREP",
+	"VLREPB",
+	"VLREPH",
+	"VLREPF",
+	"VLREPG",
+	"VLC",
+	"VLCB",
+	"VLCH",
+	"VLCF",
+	"VLCG",
+	"VLEH",
+	"VLEF",
+	"VLEG",
+	"VLEB",
+	"VLEIH",
+	"VLEIF",
+	"VLEIG",
+	"VLEIB",
+	"VFI",
+	"VFIDB",
+	"WFIDB",
+	"VLGV",
+	"VLGVB",
+	"VLGVH",
+	"VLGVF",
+	"VLGVG",
+	"VLLEZ",
+	"VLLEZB",
+	"VLLEZH",
+	"VLLEZF",
+	"VLLEZG",
+	"VLM",
+	"VLP",
+	"VLPB",
+	"VLPH",
+	"VLPF",
+	"VLPG",
+	"VLBB",
+	"VLVG",
+	"VLVGB",
+	"VLVGH",
+	"VLVGF",
+	"VLVGG",
+	"VLVGP",
+	"VLL",
+	"VMX",
+	"VMXB",
+	"VMXH",
+	"VMXF",
+	"VMXG",
+	"VMXL",
+	"VMXLB",
+	"VMXLH",
+	"VMXLF",
+	"VMXLG",
+	"VMRH",
+	"VMRHB",
+	"VMRHH",
+	"VMRHF",
+	"VMRHG",
+	"VMRL",
+	"VMRLB",
+	"VMRLH",
+	"VMRLF",
+	"VMRLG",
+	"VMN",
+	"VMNB",
+	"VMNH",
+	"VMNF",
+	"VMNG",
+	"VMNL",
+	"VMNLB",
+	"VMNLH",
+	"VMNLF",
+	"VMNLG",
+	"VMAE",
+	"VMAEB",
+	"VMAEH",
+	"VMAEF",
+	"VMAH",
+	"VMAHB",
+	"VMAHH",
+	"VMAHF",
+	"VMALE",
+	"VMALEB",
+	"VMALEH",
+	"VMALEF",
+	"VMALH",
+	"VMALHB",
+	"VMALHH",
+	"VMALHF",
+	"VMALO",
+	"VMALOB",
+	"VMALOH",
+	"VMALOF",
+	"VMAL",
+	"VMALB",
+	"VMALHW",
+	"VMALF",
+	"VMAO",
+	"VMAOB",
+	"VMAOH",
+	"VMAOF",
+	"VME",
+	"VMEB",
+	"VMEH",
+	"VMEF",
+	"VMH",
+	"VMHB",
+	"VMHH",
+	"VMHF",
+	"VMLE",
+	"VMLEB",
+	"VMLEH",
+	"VMLEF",
+	"VMLH",
+	"VMLHB",
+	"VMLHH",
+	"VMLHF",
+	"VMLO",
+	"VMLOB",
+	"VMLOH",
+	"VMLOF",
+	"VML",
+	"VMLB",
+	"VMLHW",
+	"VMLF",
+	"VMO",
+	"VMOB",
+	"VMOH",
+	"VMOF",
+	"VNO",
+	"VNOT",
+	"VO",
+	"VPK",
+	"VPKH",
+	"VPKF",
+	"VPKG",
+	"VPKLS",
+	"VPKLSH",
+	"VPKLSF",
+	"VPKLSG",
+	"VPKLSHS",
+	"VPKLSFS",
+	"VPKLSGS",
+	"VPKS",
+	"VPKSH",
+	"VPKSF",
+	"VPKSG",
+	"VPKSHS",
+	"VPKSFS",
+	"VPKSGS",
+	"VPERM",
+	"VPDI",
+	"VPOPCT",
+	"VREP",
+	"VREPB",
+	"VREPH",
+	"VREPF",
+	"VREPG",
+	"VREPI",
+	"VREPIB",
+	"VREPIH",
+	"VREPIF",
+	"VREPIG",
+	"VSCEF",
+	"VSCEG",
+	"VSEL",
+	"VSL",
+	"VSLB",
+	"VSLDB",
+	"VSRA",
+	"VSRAB",
+	"VSRL",
+	"VSRLB",
+	"VSEG",
+	"VSEGB",
+	"VSEGH",
+	"VSEGF",
+	"VST",
+	"VSTEH",
+	"VSTEF",
+	"VSTEG",
+	"VSTEB",
+	"VSTM",
+	"VSTL",
+	"VSTRC",
+	"VSTRCB",
+	"VSTRCH",
+	"VSTRCF",
+	"VSTRCBS",
+	"VSTRCHS",
+	"VSTRCFS",
+	"VSTRCZB",
+	"VSTRCZH",
+	"VSTRCZF",
+	"VSTRCZBS",
+	"VSTRCZHS",
+	"VSTRCZFS",
+	"VS",
+	"VSB",
+	"VSH",
+	"VSF",
+	"VSG",
+	"VSQ",
+	"VSCBI",
+	"VSCBIB",
+	"VSCBIH",
+	"VSCBIF",
+	"VSCBIG",
+	"VSCBIQ",
+	"VSBCBI",
+	"VSBCBIQ",
+	"VSBI",
+	"VSBIQ",
+	"VSUMG",
+	"VSUMGH",
+	"VSUMGF",
+	"VSUMQ",
+	"VSUMQF",
+	"VSUMQG",
+	"VSUM",
+	"VSUMB",
+	"VSUMH",
+	"VTM",
+	"VUPH",
+	"VUPHB",
+	"VUPHH",
+	"VUPHF",
+	"VUPLH",
+	"VUPLHB",
+	"VUPLHH",
+	"VUPLHF",
+	"VUPLL",
+	"VUPLLB",
+	"VUPLLH",
+	"VUPLLF",
+	"VUPL",
+	"VUPLB",
+	"VUPLHW",
+	"VUPLF",
+	"BYTE",
+	"WORD",
+	"DWORD",
+	"LAST",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/anamesz.go b/vendor/github.com/google/gops/internal/obj/s390x/anamesz.go
new file mode 100644
index 00000000..9c9b4d58
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/anamesz.go
@@ -0,0 +1,39 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package s390x
+
+var cnamesz = []string{
+	"NONE",
+	"REG",
+	"FREG",
+	"VREG",
+	"AREG",
+	"ZCON",
+	"SCON",
+	"UCON",
+	"ADDCON",
+	"ANDCON",
+	"LCON",
+	"DCON",
+	"SACON",
+	"LACON",
+	"DACON",
+	"SBRA",
+	"LBRA",
+	"SAUTO",
+	"LAUTO",
+	"ZOREG",
+	"SOREG",
+	"LOREG",
+	"TLS_LE",
+	"TLS_IE",
+	"GOK",
+	"ADDR",
+	"SYMADDR",
+	"GOTADDR",
+	"TEXTSIZE",
+	"ANY",
+	"NCLASS",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/asmz.go b/vendor/github.com/google/gops/internal/obj/s390x/asmz.go
new file mode 100644
index 00000000..e3116462
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/asmz.go
@@ -0,0 +1,4766 @@
+// Based on cmd/internal/obj/ppc64/asm9.go.
+//
+//    Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//    Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//    Portions Copyright © 1997-1999 Vita Nuova Limited
+//    Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//    Portions Copyright © 2004,2006 Bruce Ellis
+//    Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//    Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//    Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package s390x
+
+import (
+	"log"
+	"math"
+	"sort"
+
+	"github.com/google/gops/internal/obj"
+)
+
+// instruction layout.
+const (
+	funcAlign = 16
+)
+
+type Optab struct {
+	as    obj.As // opcode
+	a1    uint8  // From
+	a2    uint8  // Reg
+	a3    uint8  // From3
+	a4    uint8  // To
+	type_ int8
+	param int16 // REGSP for auto variables
+}
+
+var optab = []Optab{
+	// instruction,  From,   Reg,    From3,  To, type, param
+	Optab{obj.ATEXT, C_ADDR, C_NONE, C_NONE, C_TEXTSIZE, 0, 0},
+	Optab{obj.ATEXT, C_ADDR, C_NONE, C_LCON, C_TEXTSIZE, 0, 0},
+
+	// move register
+	Optab{AMOVD, C_REG, C_NONE, C_NONE, C_REG, 1, 0},
+	Optab{AMOVB, C_REG, C_NONE, C_NONE, C_REG, 1, 0},
+	Optab{AMOVBZ, C_REG, C_NONE, C_NONE, C_REG, 1, 0},
+	Optab{AMOVW, C_REG, C_NONE, C_NONE, C_REG, 1, 0},
+	Optab{AMOVWZ, C_REG, C_NONE, C_NONE, C_REG, 1, 0},
+	Optab{AFMOVD, C_FREG, C_NONE, C_NONE, C_FREG, 1, 0},
+	Optab{AMOVDBR, C_REG, C_NONE, C_NONE, C_REG, 1, 0},
+
+	// load constant
+	Optab{AMOVD, C_LACON, C_NONE, C_NONE, C_REG, 26, REGSP},
+	Optab{AMOVW, C_LACON, C_NONE, C_NONE, C_REG, 26, REGSP},
+	Optab{AMOVWZ, C_LACON, C_NONE, C_NONE, C_REG, 26, REGSP},
+	Optab{AMOVD, C_DCON, C_NONE, C_NONE, C_REG, 3, 0},
+	Optab{AMOVW, C_DCON, C_NONE, C_NONE, C_REG, 3, 0},
+	Optab{AMOVWZ, C_DCON, C_NONE, C_NONE, C_REG, 3, 0},
+	Optab{AMOVB, C_DCON, C_NONE, C_NONE, C_REG, 3, 0},
+	Optab{AMOVBZ, C_DCON, C_NONE, C_NONE, C_REG, 3, 0},
+
+	// store constant
+	Optab{AMOVD, C_LCON, C_NONE, C_NONE, C_ADDR, 73, 0},
+	Optab{AMOVW, C_LCON, C_NONE, C_NONE, C_ADDR, 73, 0},
+	Optab{AMOVWZ, C_LCON, C_NONE, C_NONE, C_ADDR, 73, 0},
+	Optab{AMOVBZ, C_LCON, C_NONE, C_NONE, C_ADDR, 73, 0},
+	Optab{AMOVB, C_LCON, C_NONE, C_NONE, C_ADDR, 73, 0},
+	Optab{AMOVD, C_LCON, C_NONE, C_NONE, C_LAUTO, 72, REGSP},
+	Optab{AMOVW, C_LCON, C_NONE, C_NONE, C_LAUTO, 72, REGSP},
+	Optab{AMOVWZ, C_LCON, C_NONE, C_NONE, C_LAUTO, 72, REGSP},
+	Optab{AMOVB, C_LCON, C_NONE, C_NONE, C_LAUTO, 72, REGSP},
+	Optab{AMOVBZ, C_LCON, C_NONE, C_NONE, C_LAUTO, 72, REGSP},
+	Optab{AMOVD, C_LCON, C_NONE, C_NONE, C_LOREG, 72, 0},
+	Optab{AMOVW, C_LCON, C_NONE, C_NONE, C_LOREG, 72, 0},
+	Optab{AMOVWZ, C_LCON, C_NONE, C_NONE, C_LOREG, 72, 0},
+	Optab{AMOVB, C_LCON, C_NONE, C_NONE, C_LOREG, 72, 0},
+	Optab{AMOVBZ, C_LCON, C_NONE, C_NONE, C_LOREG, 72, 0},
+
+	// store
+	Optab{AMOVD, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVW, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVWZ, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVBZ, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVB, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVDBR, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVHBR, C_REG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AMOVD, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVW, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVWZ, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVBZ, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVB, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVDBR, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVHBR, C_REG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AMOVD, C_REG, C_NONE, C_NONE, C_ADDR, 74, 0},
+	Optab{AMOVW, C_REG, C_NONE, C_NONE, C_ADDR, 74, 0},
+	Optab{AMOVWZ, C_REG, C_NONE, C_NONE, C_ADDR, 74, 0},
+	Optab{AMOVBZ, C_REG, C_NONE, C_NONE, C_ADDR, 74, 0},
+	Optab{AMOVB, C_REG, C_NONE, C_NONE, C_ADDR, 74, 0},
+
+	// load
+	Optab{AMOVD, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVW, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVWZ, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVBZ, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVB, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVDBR, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVHBR, C_LAUTO, C_NONE, C_NONE, C_REG, 36, REGSP},
+	Optab{AMOVD, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVW, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVWZ, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVBZ, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVB, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVDBR, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVHBR, C_LOREG, C_NONE, C_NONE, C_REG, 36, 0},
+	Optab{AMOVD, C_ADDR, C_NONE, C_NONE, C_REG, 75, 0},
+	Optab{AMOVW, C_ADDR, C_NONE, C_NONE, C_REG, 75, 0},
+	Optab{AMOVWZ, C_ADDR, C_NONE, C_NONE, C_REG, 75, 0},
+	Optab{AMOVBZ, C_ADDR, C_NONE, C_NONE, C_REG, 75, 0},
+	Optab{AMOVB, C_ADDR, C_NONE, C_NONE, C_REG, 75, 0},
+
+	// interlocked load and op
+	Optab{ALAAG, C_REG, C_REG, C_NONE, C_LOREG, 99, 0},
+
+	// integer arithmetic
+	Optab{AADD, C_REG, C_REG, C_NONE, C_REG, 2, 0},
+	Optab{AADD, C_REG, C_NONE, C_NONE, C_REG, 2, 0},
+	Optab{AADD, C_LCON, C_REG, C_NONE, C_REG, 22, 0},
+	Optab{AADD, C_LCON, C_NONE, C_NONE, C_REG, 22, 0},
+	Optab{AADD, C_LOREG, C_NONE, C_NONE, C_REG, 12, 0},
+	Optab{AADD, C_LAUTO, C_NONE, C_NONE, C_REG, 12, REGSP},
+	Optab{ASUB, C_LCON, C_REG, C_NONE, C_REG, 21, 0},
+	Optab{ASUB, C_LCON, C_NONE, C_NONE, C_REG, 21, 0},
+	Optab{ASUB, C_LOREG, C_NONE, C_NONE, C_REG, 12, 0},
+	Optab{ASUB, C_LAUTO, C_NONE, C_NONE, C_REG, 12, REGSP},
+	Optab{AMULHD, C_REG, C_NONE, C_NONE, C_REG, 4, 0},
+	Optab{AMULHD, C_REG, C_REG, C_NONE, C_REG, 4, 0},
+	Optab{ADIVW, C_REG, C_REG, C_NONE, C_REG, 2, 0},
+	Optab{ADIVW, C_REG, C_NONE, C_NONE, C_REG, 2, 0},
+	Optab{ASUB, C_REG, C_REG, C_NONE, C_REG, 10, 0},
+	Optab{ASUB, C_REG, C_NONE, C_NONE, C_REG, 10, 0},
+	Optab{ANEG, C_REG, C_NONE, C_NONE, C_REG, 47, 0},
+	Optab{ANEG, C_NONE, C_NONE, C_NONE, C_REG, 47, 0},
+
+	// integer logical
+	Optab{AAND, C_REG, C_REG, C_NONE, C_REG, 6, 0},
+	Optab{AAND, C_REG, C_NONE, C_NONE, C_REG, 6, 0},
+	Optab{AAND, C_LCON, C_NONE, C_NONE, C_REG, 23, 0},
+	Optab{AAND, C_LOREG, C_NONE, C_NONE, C_REG, 12, 0},
+	Optab{AAND, C_LAUTO, C_NONE, C_NONE, C_REG, 12, REGSP},
+	Optab{AANDW, C_REG, C_REG, C_NONE, C_REG, 6, 0},
+	Optab{AANDW, C_REG, C_NONE, C_NONE, C_REG, 6, 0},
+	Optab{AANDW, C_LCON, C_NONE, C_NONE, C_REG, 24, 0},
+	Optab{AANDW, C_LOREG, C_NONE, C_NONE, C_REG, 12, 0},
+	Optab{AANDW, C_LAUTO, C_NONE, C_NONE, C_REG, 12, REGSP},
+	Optab{ASLD, C_REG, C_NONE, C_NONE, C_REG, 7, 0},
+	Optab{ASLD, C_REG, C_REG, C_NONE, C_REG, 7, 0},
+	Optab{ASLD, C_SCON, C_REG, C_NONE, C_REG, 7, 0},
+	Optab{ASLD, C_SCON, C_NONE, C_NONE, C_REG, 7, 0},
+
+	// compare and swap
+	Optab{ACSG, C_REG, C_REG, C_NONE, C_SOREG, 79, 0},
+
+	// floating point
+	Optab{AFADD, C_FREG, C_NONE, C_NONE, C_FREG, 2, 0},
+	Optab{AFADD, C_FREG, C_FREG, C_NONE, C_FREG, 2, 0},
+	Optab{AFABS, C_FREG, C_NONE, C_NONE, C_FREG, 33, 0},
+	Optab{AFABS, C_NONE, C_NONE, C_NONE, C_FREG, 33, 0},
+	Optab{AFMADD, C_FREG, C_FREG, C_FREG, C_FREG, 34, 0},
+	Optab{AFMUL, C_FREG, C_NONE, C_NONE, C_FREG, 32, 0},
+	Optab{AFMUL, C_FREG, C_FREG, C_NONE, C_FREG, 32, 0},
+	Optab{AFMOVD, C_LAUTO, C_NONE, C_NONE, C_FREG, 36, REGSP},
+	Optab{AFMOVD, C_LOREG, C_NONE, C_NONE, C_FREG, 36, 0},
+	Optab{AFMOVD, C_ADDR, C_NONE, C_NONE, C_FREG, 75, 0},
+	Optab{AFMOVD, C_FREG, C_NONE, C_NONE, C_LAUTO, 35, REGSP},
+	Optab{AFMOVD, C_FREG, C_NONE, C_NONE, C_LOREG, 35, 0},
+	Optab{AFMOVD, C_FREG, C_NONE, C_NONE, C_ADDR, 74, 0},
+	Optab{AFMOVD, C_ZCON, C_NONE, C_NONE, C_FREG, 67, 0},
+	Optab{ACEFBRA, C_REG, C_NONE, C_NONE, C_FREG, 82, 0},
+	Optab{ACFEBRA, C_FREG, C_NONE, C_NONE, C_REG, 83, 0},
+	Optab{AFIEBR, C_SCON, C_FREG, C_NONE, C_FREG, 48, 0},
+
+	// load symbol address (plus offset)
+	Optab{AMOVD, C_SYMADDR, C_NONE, C_NONE, C_REG, 19, 0},
+	Optab{AMOVD, C_GOTADDR, C_NONE, C_NONE, C_REG, 93, 0},
+	Optab{AMOVD, C_TLS_LE, C_NONE, C_NONE, C_REG, 94, 0},
+	Optab{AMOVD, C_TLS_IE, C_NONE, C_NONE, C_REG, 95, 0},
+
+	// system call
+	Optab{ASYSCALL, C_NONE, C_NONE, C_NONE, C_NONE, 5, 0},
+	Optab{ASYSCALL, C_SCON, C_NONE, C_NONE, C_NONE, 77, 0},
+
+	// branch
+	Optab{ABEQ, C_NONE, C_NONE, C_NONE, C_SBRA, 16, 0},
+	Optab{ABR, C_NONE, C_NONE, C_NONE, C_LBRA, 11, 0},
+	Optab{ABC, C_SCON, C_REG, C_NONE, C_LBRA, 16, 0},
+	Optab{ABR, C_NONE, C_NONE, C_NONE, C_REG, 18, 0},
+	Optab{ABR, C_REG, C_NONE, C_NONE, C_REG, 18, 0},
+	Optab{ABR, C_NONE, C_NONE, C_NONE, C_ZOREG, 15, 0},
+	Optab{ABC, C_NONE, C_NONE, C_NONE, C_ZOREG, 15, 0},
+	Optab{ACMPBEQ, C_REG, C_REG, C_NONE, C_SBRA, 89, 0},
+	Optab{ACMPBEQ, C_REG, C_NONE, C_ADDCON, C_SBRA, 90, 0},
+	Optab{ACMPBEQ, C_REG, C_NONE, C_SCON, C_SBRA, 90, 0},
+	Optab{ACMPUBEQ, C_REG, C_REG, C_NONE, C_SBRA, 89, 0},
+	Optab{ACMPUBEQ, C_REG, C_NONE, C_ANDCON, C_SBRA, 90, 0},
+
+	// move on condition
+	Optab{AMOVDEQ, C_REG, C_NONE, C_NONE, C_REG, 17, 0},
+
+	// find leftmost one
+	Optab{AFLOGR, C_REG, C_NONE, C_NONE, C_REG, 8, 0},
+
+	// compare
+	Optab{ACMP, C_REG, C_NONE, C_NONE, C_REG, 70, 0},
+	Optab{ACMP, C_REG, C_NONE, C_NONE, C_LCON, 71, 0},
+	Optab{ACMPU, C_REG, C_NONE, C_NONE, C_REG, 70, 0},
+	Optab{ACMPU, C_REG, C_NONE, C_NONE, C_LCON, 71, 0},
+	Optab{AFCMPO, C_FREG, C_NONE, C_NONE, C_FREG, 70, 0},
+	Optab{AFCMPO, C_FREG, C_REG, C_NONE, C_FREG, 70, 0},
+
+	// 32-bit access registers
+	Optab{AMOVW, C_AREG, C_NONE, C_NONE, C_REG, 68, 0},
+	Optab{AMOVWZ, C_AREG, C_NONE, C_NONE, C_REG, 68, 0},
+	Optab{AMOVW, C_REG, C_NONE, C_NONE, C_AREG, 69, 0},
+	Optab{AMOVWZ, C_REG, C_NONE, C_NONE, C_AREG, 69, 0},
+
+	// macros
+	Optab{ACLEAR, C_LCON, C_NONE, C_NONE, C_LOREG, 96, 0},
+	Optab{ACLEAR, C_LCON, C_NONE, C_NONE, C_LAUTO, 96, REGSP},
+
+	// load/store multiple
+	Optab{ASTMG, C_REG, C_REG, C_NONE, C_LOREG, 97, 0},
+	Optab{ASTMG, C_REG, C_REG, C_NONE, C_LAUTO, 97, REGSP},
+	Optab{ALMG, C_LOREG, C_REG, C_NONE, C_REG, 98, 0},
+	Optab{ALMG, C_LAUTO, C_REG, C_NONE, C_REG, 98, REGSP},
+
+	// bytes
+	Optab{ABYTE, C_SCON, C_NONE, C_NONE, C_NONE, 40, 0},
+	Optab{AWORD, C_LCON, C_NONE, C_NONE, C_NONE, 40, 0},
+	Optab{ADWORD, C_LCON, C_NONE, C_NONE, C_NONE, 31, 0},
+	Optab{ADWORD, C_DCON, C_NONE, C_NONE, C_NONE, 31, 0},
+
+	// fast synchronization
+	Optab{ASYNC, C_NONE, C_NONE, C_NONE, C_NONE, 81, 0},
+
+	// store clock
+	Optab{ASTCK, C_NONE, C_NONE, C_NONE, C_SAUTO, 88, REGSP},
+	Optab{ASTCK, C_NONE, C_NONE, C_NONE, C_SOREG, 88, 0},
+
+	// storage and storage
+	Optab{AMVC, C_LOREG, C_NONE, C_SCON, C_LOREG, 84, 0},
+	Optab{AMVC, C_LOREG, C_NONE, C_SCON, C_LAUTO, 84, REGSP},
+	Optab{AMVC, C_LAUTO, C_NONE, C_SCON, C_LAUTO, 84, REGSP},
+
+	// address
+	Optab{ALARL, C_LCON, C_NONE, C_NONE, C_REG, 85, 0},
+	Optab{ALARL, C_SYMADDR, C_NONE, C_NONE, C_REG, 85, 0},
+	Optab{ALA, C_SOREG, C_NONE, C_NONE, C_REG, 86, 0},
+	Optab{ALA, C_SAUTO, C_NONE, C_NONE, C_REG, 86, REGSP},
+	Optab{AEXRL, C_SYMADDR, C_NONE, C_NONE, C_REG, 87, 0},
+
+	// misc
+	Optab{obj.AUNDEF, C_NONE, C_NONE, C_NONE, C_NONE, 78, 0},
+	Optab{obj.APCDATA, C_LCON, C_NONE, C_NONE, C_LCON, 0, 0},
+	Optab{obj.AFUNCDATA, C_SCON, C_NONE, C_NONE, C_ADDR, 0, 0},
+	Optab{obj.ANOP, C_NONE, C_NONE, C_NONE, C_NONE, 0, 0},
+	Optab{obj.ANOP, C_SAUTO, C_NONE, C_NONE, C_NONE, 0, 0},
+
+	// vector instructions
+
+	// VRX store
+	Optab{AVST, C_VREG, C_NONE, C_NONE, C_SOREG, 100, 0},
+	Optab{AVST, C_VREG, C_NONE, C_NONE, C_SAUTO, 100, REGSP},
+	Optab{AVSTEG, C_VREG, C_NONE, C_SCON, C_SOREG, 100, 0},
+	Optab{AVSTEG, C_VREG, C_NONE, C_SCON, C_SAUTO, 100, REGSP},
+
+	// VRX load
+	Optab{AVL, C_SOREG, C_NONE, C_NONE, C_VREG, 101, 0},
+	Optab{AVL, C_SAUTO, C_NONE, C_NONE, C_VREG, 101, REGSP},
+	Optab{AVLEG, C_SOREG, C_NONE, C_SCON, C_VREG, 101, 0},
+	Optab{AVLEG, C_SAUTO, C_NONE, C_SCON, C_VREG, 101, REGSP},
+
+	// VRV scatter
+	Optab{AVSCEG, C_VREG, C_NONE, C_SCON, C_SOREG, 102, 0},
+	Optab{AVSCEG, C_VREG, C_NONE, C_SCON, C_SAUTO, 102, REGSP},
+
+	// VRV gather
+	Optab{AVGEG, C_SOREG, C_NONE, C_SCON, C_VREG, 103, 0},
+	Optab{AVGEG, C_SAUTO, C_NONE, C_SCON, C_VREG, 103, REGSP},
+
+	// VRS element shift/rotate and load gr to/from vr element
+	Optab{AVESLG, C_SCON, C_VREG, C_NONE, C_VREG, 104, 0},
+	Optab{AVESLG, C_REG, C_VREG, C_NONE, C_VREG, 104, 0},
+	Optab{AVESLG, C_SCON, C_NONE, C_NONE, C_VREG, 104, 0},
+	Optab{AVESLG, C_REG, C_NONE, C_NONE, C_VREG, 104, 0},
+	Optab{AVLGVG, C_SCON, C_VREG, C_NONE, C_REG, 104, 0},
+	Optab{AVLGVG, C_REG, C_VREG, C_NONE, C_REG, 104, 0},
+	Optab{AVLVGG, C_SCON, C_REG, C_NONE, C_VREG, 104, 0},
+	Optab{AVLVGG, C_REG, C_REG, C_NONE, C_VREG, 104, 0},
+
+	// VRS store multiple
+	Optab{AVSTM, C_VREG, C_VREG, C_NONE, C_SOREG, 105, 0},
+	Optab{AVSTM, C_VREG, C_VREG, C_NONE, C_SAUTO, 105, REGSP},
+
+	// VRS load multiple
+	Optab{AVLM, C_SOREG, C_VREG, C_NONE, C_VREG, 106, 0},
+	Optab{AVLM, C_SAUTO, C_VREG, C_NONE, C_VREG, 106, REGSP},
+
+	// VRS store with length
+	Optab{AVSTL, C_VREG, C_NONE, C_REG, C_SOREG, 107, 0},
+	Optab{AVSTL, C_VREG, C_NONE, C_REG, C_SAUTO, 107, REGSP},
+
+	// VRS load with length
+	Optab{AVLL, C_SOREG, C_NONE, C_REG, C_VREG, 108, 0},
+	Optab{AVLL, C_SAUTO, C_NONE, C_REG, C_VREG, 108, REGSP},
+
+	// VRI-a
+	Optab{AVGBM, C_ANDCON, C_NONE, C_NONE, C_VREG, 109, 0},
+	Optab{AVZERO, C_NONE, C_NONE, C_NONE, C_VREG, 109, 0},
+	Optab{AVREPIG, C_ADDCON, C_NONE, C_NONE, C_VREG, 109, 0},
+	Optab{AVREPIG, C_SCON, C_NONE, C_NONE, C_VREG, 109, 0},
+	Optab{AVLEIG, C_ADDCON, C_NONE, C_SCON, C_VREG, 109, 0},
+	Optab{AVLEIG, C_SCON, C_NONE, C_SCON, C_VREG, 109, 0},
+
+	// VRI-b generate mask
+	Optab{AVGMG, C_SCON, C_NONE, C_SCON, C_VREG, 110, 0},
+
+	// VRI-c replicate
+	Optab{AVREPG, C_UCON, C_VREG, C_NONE, C_VREG, 111, 0},
+
+	// VRI-d element rotate and insert under mask and
+	// shift left double by byte
+	Optab{AVERIMG, C_VREG, C_VREG, C_SCON, C_VREG, 112, 0},
+	Optab{AVSLDB, C_VREG, C_VREG, C_SCON, C_VREG, 112, 0},
+
+	// VRI-d fp test data class immediate
+	Optab{AVFTCIDB, C_SCON, C_VREG, C_NONE, C_VREG, 113, 0},
+
+	// VRR-a load reg
+	Optab{AVLR, C_VREG, C_NONE, C_NONE, C_VREG, 114, 0},
+
+	// VRR-a compare
+	Optab{AVECG, C_VREG, C_NONE, C_NONE, C_VREG, 115, 0},
+
+	// VRR-b
+	Optab{AVCEQG, C_VREG, C_VREG, C_NONE, C_VREG, 117, 0},
+	Optab{AVFAEF, C_VREG, C_VREG, C_NONE, C_VREG, 117, 0},
+	Optab{AVPKSG, C_VREG, C_VREG, C_NONE, C_VREG, 117, 0},
+
+	// VRR-c
+	Optab{AVAQ, C_VREG, C_VREG, C_NONE, C_VREG, 118, 0},
+	Optab{AVAQ, C_VREG, C_NONE, C_NONE, C_VREG, 118, 0},
+	Optab{AVNOT, C_VREG, C_NONE, C_NONE, C_VREG, 118, 0},
+	Optab{AVPDI, C_VREG, C_VREG, C_SCON, C_VREG, 123, 0},
+
+	// VRR-c shifts
+	Optab{AVERLLVG, C_VREG, C_VREG, C_NONE, C_VREG, 119, 0},
+	Optab{AVERLLVG, C_VREG, C_NONE, C_NONE, C_VREG, 119, 0},
+
+	// VRR-d
+	//             2       3       1       4
+	Optab{AVACQ, C_VREG, C_VREG, C_VREG, C_VREG, 120, 0},
+
+	// VRR-e
+	Optab{AVSEL, C_VREG, C_VREG, C_VREG, C_VREG, 121, 0},
+
+	// VRR-f
+	Optab{AVLVGP, C_REG, C_REG, C_NONE, C_VREG, 122, 0},
+}
+
+var oprange [ALAST & obj.AMask][]Optab
+
+var xcmp [C_NCLASS][C_NCLASS]bool
+
+func spanz(ctxt *obj.Link, cursym *obj.LSym) {
+	p := cursym.Text
+	if p == nil || p.Link == nil { // handle external functions and ELF section symbols
+		return
+	}
+	ctxt.Cursym = cursym
+	ctxt.Autosize = int32(p.To.Offset)
+
+	if oprange[AORW&obj.AMask] == nil {
+		buildop(ctxt)
+	}
+
+	buffer := make([]byte, 0)
+	changed := true
+	loop := 0
+	for changed {
+		if loop > 10 {
+			ctxt.Diag("stuck in spanz loop")
+			break
+		}
+		changed = false
+		buffer = buffer[:0]
+		ctxt.Cursym.R = make([]obj.Reloc, 0)
+		for p := cursym.Text; p != nil; p = p.Link {
+			pc := int64(len(buffer))
+			if pc != p.Pc {
+				changed = true
+			}
+			p.Pc = pc
+			ctxt.Pc = p.Pc
+			ctxt.Curp = p
+			asmout(ctxt, &buffer)
+			if pc == int64(len(buffer)) {
+				switch p.As {
+				case obj.ANOP, obj.AFUNCDATA, obj.APCDATA, obj.ATEXT:
+					// ok
+				default:
+					ctxt.Diag("zero-width instruction\n%v", p)
+				}
+			}
+		}
+		loop++
+	}
+
+	cursym.Size = int64(len(buffer))
+	if cursym.Size%funcAlign != 0 {
+		cursym.Size += funcAlign - (cursym.Size % funcAlign)
+	}
+	cursym.Grow(cursym.Size)
+	copy(cursym.P, buffer)
+}
+
+func isint32(v int64) bool {
+	return int64(int32(v)) == v
+}
+
+func isuint32(v uint64) bool {
+	return uint64(uint32(v)) == v
+}
+
+func aclass(ctxt *obj.Link, a *obj.Addr) int {
+	switch a.Type {
+	case obj.TYPE_NONE:
+		return C_NONE
+
+	case obj.TYPE_REG:
+		if REG_R0 <= a.Reg && a.Reg <= REG_R15 {
+			return C_REG
+		}
+		if REG_F0 <= a.Reg && a.Reg <= REG_F15 {
+			return C_FREG
+		}
+		if REG_AR0 <= a.Reg && a.Reg <= REG_AR15 {
+			return C_AREG
+		}
+		if REG_V0 <= a.Reg && a.Reg <= REG_V31 {
+			return C_VREG
+		}
+		return C_GOK
+
+	case obj.TYPE_MEM:
+		switch a.Name {
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			if a.Sym == nil {
+				// must have a symbol
+				break
+			}
+			ctxt.Instoffset = a.Offset
+			if a.Sym.Type == obj.STLSBSS {
+				if ctxt.Flag_shared {
+					return C_TLS_IE // initial exec model
+				}
+				return C_TLS_LE // local exec model
+			}
+			return C_ADDR
+
+		case obj.NAME_GOTREF:
+			return C_GOTADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SAUTO
+			}
+			return C_LAUTO
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + ctxt.FixedFrameSize()
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SAUTO
+			}
+			return C_LAUTO
+
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if ctxt.Instoffset == 0 {
+				return C_ZOREG
+			}
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SOREG
+			}
+			return C_LOREG
+		}
+
+		return C_GOK
+
+	case obj.TYPE_TEXTSIZE:
+		return C_TEXTSIZE
+
+	case obj.TYPE_FCONST:
+		if f64, ok := a.Val.(float64); ok && math.Float64bits(f64) == 0 {
+			return C_ZCON
+		}
+		ctxt.Diag("cannot handle the floating point constant %v", a.Val)
+
+	case obj.TYPE_CONST,
+		obj.TYPE_ADDR:
+		switch a.Name {
+		case obj.NAME_NONE:
+			ctxt.Instoffset = a.Offset
+			if a.Reg != 0 {
+				if -BIG <= ctxt.Instoffset && ctxt.Instoffset <= BIG {
+					return C_SACON
+				}
+				if isint32(ctxt.Instoffset) {
+					return C_LACON
+				}
+				return C_DACON
+			}
+			goto consize
+
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			s := a.Sym
+			if s == nil {
+				break
+			}
+			ctxt.Instoffset = a.Offset
+			if s.Type == obj.SCONST {
+				goto consize
+			}
+
+			return C_SYMADDR
+
+		case obj.NAME_AUTO:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SACON
+			}
+			return C_LACON
+
+		case obj.NAME_PARAM:
+			ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + ctxt.FixedFrameSize()
+			if ctxt.Instoffset >= -BIG && ctxt.Instoffset < BIG {
+				return C_SACON
+			}
+			return C_LACON
+		}
+
+		return C_GOK
+
+	consize:
+		if ctxt.Instoffset == 0 {
+			return C_ZCON
+		}
+		if ctxt.Instoffset >= 0 {
+			if ctxt.Instoffset <= 0x7fff {
+				return C_SCON
+			}
+			if ctxt.Instoffset <= 0xffff {
+				return C_ANDCON
+			}
+			if ctxt.Instoffset&0xffff == 0 && isuint32(uint64(ctxt.Instoffset)) { /* && (instoffset & (1<<31)) == 0) */
+				return C_UCON
+			}
+			if isint32(ctxt.Instoffset) || isuint32(uint64(ctxt.Instoffset)) {
+				return C_LCON
+			}
+			return C_DCON
+		}
+
+		if ctxt.Instoffset >= -0x8000 {
+			return C_ADDCON
+		}
+		if ctxt.Instoffset&0xffff == 0 && isint32(ctxt.Instoffset) {
+			return C_UCON
+		}
+		if isint32(ctxt.Instoffset) {
+			return C_LCON
+		}
+		return C_DCON
+
+	case obj.TYPE_BRANCH:
+		return C_SBRA
+	}
+
+	return C_GOK
+}
+
+func oplook(ctxt *obj.Link, p *obj.Prog) *Optab {
+	a1 := int(p.Optab)
+	if a1 != 0 {
+		return &optab[a1-1]
+	}
+	a1 = int(p.From.Class)
+	if a1 == 0 {
+		a1 = aclass(ctxt, &p.From) + 1
+		p.From.Class = int8(a1)
+	}
+
+	a1--
+	a3 := C_NONE + 1
+	if p.From3 != nil {
+		a3 = int(p.From3.Class)
+		if a3 == 0 {
+			a3 = aclass(ctxt, p.From3) + 1
+			p.From3.Class = int8(a3)
+		}
+	}
+
+	a3--
+	a4 := int(p.To.Class)
+	if a4 == 0 {
+		a4 = aclass(ctxt, &p.To) + 1
+		p.To.Class = int8(a4)
+	}
+
+	a4--
+	a2 := C_NONE
+	if p.Reg != 0 {
+		if REG_R0 <= p.Reg && p.Reg <= REG_R15 {
+			a2 = C_REG
+		} else if REG_V0 <= p.Reg && p.Reg <= REG_V31 {
+			a2 = C_VREG
+		} else if REG_F0 <= p.Reg && p.Reg <= REG_F15 {
+			a2 = C_FREG
+		} else if REG_AR0 <= p.Reg && p.Reg <= REG_AR15 {
+			a2 = C_AREG
+		}
+	}
+
+	ops := oprange[p.As&obj.AMask]
+	c1 := &xcmp[a1]
+	c2 := &xcmp[a2]
+	c3 := &xcmp[a3]
+	c4 := &xcmp[a4]
+	for i := range ops {
+		op := &ops[i]
+		if (int(op.a2) == a2 || c2[op.a2]) && c4[op.a4] && c1[op.a1] && c3[op.a3] {
+			p.Optab = uint16(cap(optab) - cap(ops) + i + 1)
+			return op
+		}
+	}
+
+	// cannot find a case; abort
+	ctxt.Diag("illegal combination %v %v %v %v %v\n", p.As, DRconv(a1), DRconv(a2), DRconv(a3), DRconv(a4))
+	ctxt.Diag("prog: %v\n", p)
+	return nil
+}
+
+func cmp(a int, b int) bool {
+	if a == b {
+		return true
+	}
+	switch a {
+	case C_DCON:
+		if b == C_LCON {
+			return true
+		}
+		fallthrough
+	case C_LCON:
+		if b == C_ZCON || b == C_SCON || b == C_UCON || b == C_ADDCON || b == C_ANDCON {
+			return true
+		}
+
+	case C_ADDCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_ANDCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_UCON:
+		if b == C_ZCON || b == C_SCON {
+			return true
+		}
+
+	case C_SCON:
+		if b == C_ZCON {
+			return true
+		}
+
+	case C_LACON:
+		if b == C_SACON {
+			return true
+		}
+
+	case C_LBRA:
+		if b == C_SBRA {
+			return true
+		}
+
+	case C_LAUTO:
+		if b == C_SAUTO {
+			return true
+		}
+
+	case C_LOREG:
+		if b == C_ZOREG || b == C_SOREG {
+			return true
+		}
+
+	case C_SOREG:
+		if b == C_ZOREG {
+			return true
+		}
+
+	case C_ANY:
+		return true
+	}
+
+	return false
+}
+
+type ocmp []Optab
+
+func (x ocmp) Len() int {
+	return len(x)
+}
+
+func (x ocmp) Swap(i, j int) {
+	x[i], x[j] = x[j], x[i]
+}
+
+func (x ocmp) Less(i, j int) bool {
+	p1 := &x[i]
+	p2 := &x[j]
+	n := int(p1.as) - int(p2.as)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a1) - int(p2.a1)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a2) - int(p2.a2)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a3) - int(p2.a3)
+	if n != 0 {
+		return n < 0
+	}
+	n = int(p1.a4) - int(p2.a4)
+	if n != 0 {
+		return n < 0
+	}
+	return false
+}
+func opset(a, b obj.As) {
+	oprange[a&obj.AMask] = oprange[b&obj.AMask]
+}
+
+func buildop(ctxt *obj.Link) {
+	for i := 0; i < C_NCLASS; i++ {
+		for n := 0; n < C_NCLASS; n++ {
+			if cmp(n, i) {
+				xcmp[i][n] = true
+			}
+		}
+	}
+	sort.Sort(ocmp(optab))
+	for i := 0; i < len(optab); i++ {
+		r := optab[i].as
+		start := i
+		for ; i+1 < len(optab); i++ {
+			if optab[i+1].as != r {
+				break
+			}
+		}
+		oprange[r&obj.AMask] = optab[start : i+1]
+
+		// opset() aliases optab ranges for similar instructions, to reduce the number of optabs in the array.
+		// oprange[] is used by oplook() to find the Optab entry that applies to a given Prog.
+		switch r {
+		case AADD:
+			opset(AADDC, r)
+			opset(AADDW, r)
+			opset(AMULLD, r)
+			opset(AMULLW, r)
+		case ADIVW:
+			opset(AADDE, r)
+			opset(ADIVD, r)
+			opset(ADIVDU, r)
+			opset(ADIVWU, r)
+			opset(AMODD, r)
+			opset(AMODDU, r)
+			opset(AMODW, r)
+			opset(AMODWU, r)
+		case AMULHD:
+			opset(AMULHDU, r)
+		case AMOVBZ:
+			opset(AMOVH, r)
+			opset(AMOVHZ, r)
+		case ALA:
+			opset(ALAY, r)
+		case AMVC:
+			opset(ACLC, r)
+			opset(AXC, r)
+			opset(AOC, r)
+			opset(ANC, r)
+		case ASTCK:
+			opset(ASTCKC, r)
+			opset(ASTCKE, r)
+			opset(ASTCKF, r)
+		case ALAAG:
+			opset(ALAA, r)
+			opset(ALAAL, r)
+			opset(ALAALG, r)
+			opset(ALAN, r)
+			opset(ALANG, r)
+			opset(ALAX, r)
+			opset(ALAXG, r)
+			opset(ALAO, r)
+			opset(ALAOG, r)
+		case ASTMG:
+			opset(ASTMY, r)
+		case ALMG:
+			opset(ALMY, r)
+		case ABEQ:
+			opset(ABGE, r)
+			opset(ABGT, r)
+			opset(ABLE, r)
+			opset(ABLT, r)
+			opset(ABNE, r)
+			opset(ABVC, r)
+			opset(ABVS, r)
+			opset(ABLEU, r)
+			opset(ABLTU, r)
+		case ABR:
+			opset(ABL, r)
+		case ABC:
+			opset(ABCL, r)
+		case AFABS:
+			opset(AFNABS, r)
+			opset(AFNEG, r)
+			opset(AFNEGS, r)
+			opset(ALEDBR, r)
+			opset(ALDEBR, r)
+			opset(AFSQRT, r)
+			opset(AFSQRTS, r)
+		case AFADD:
+			opset(AFADDS, r)
+			opset(AFDIV, r)
+			opset(AFDIVS, r)
+			opset(AFSUB, r)
+			opset(AFSUBS, r)
+		case AFMADD:
+			opset(AFMADDS, r)
+			opset(AFMSUB, r)
+			opset(AFMSUBS, r)
+			opset(AFNMADD, r)
+			opset(AFNMADDS, r)
+			opset(AFNMSUB, r)
+			opset(AFNMSUBS, r)
+		case AFMUL:
+			opset(AFMULS, r)
+		case AFCMPO:
+			opset(AFCMPU, r)
+			opset(ACEBR, r)
+		case AAND:
+			opset(AOR, r)
+			opset(AXOR, r)
+		case AANDW:
+			opset(AORW, r)
+			opset(AXORW, r)
+		case ASLD:
+			opset(ASRD, r)
+			opset(ASLW, r)
+			opset(ASRW, r)
+			opset(ASRAD, r)
+			opset(ASRAW, r)
+			opset(ARLL, r)
+			opset(ARLLG, r)
+		case ACSG:
+			opset(ACS, r)
+		case ASUB:
+			opset(ASUBC, r)
+			opset(ASUBE, r)
+			opset(ASUBW, r)
+		case ANEG:
+			opset(ANEGW, r)
+		case AFMOVD:
+			opset(AFMOVS, r)
+		case AMOVDBR:
+			opset(AMOVWBR, r)
+		case ACMP:
+			opset(ACMPW, r)
+		case ACMPU:
+			opset(ACMPWU, r)
+		case ACEFBRA:
+			opset(ACDFBRA, r)
+			opset(ACEGBRA, r)
+			opset(ACDGBRA, r)
+			opset(ACELFBR, r)
+			opset(ACDLFBR, r)
+			opset(ACELGBR, r)
+			opset(ACDLGBR, r)
+		case ACFEBRA:
+			opset(ACFDBRA, r)
+			opset(ACGEBRA, r)
+			opset(ACGDBRA, r)
+			opset(ACLFEBR, r)
+			opset(ACLFDBR, r)
+			opset(ACLGEBR, r)
+			opset(ACLGDBR, r)
+		case AFIEBR:
+			opset(AFIDBR, r)
+		case ACMPBEQ:
+			opset(ACMPBGE, r)
+			opset(ACMPBGT, r)
+			opset(ACMPBLE, r)
+			opset(ACMPBLT, r)
+			opset(ACMPBNE, r)
+		case ACMPUBEQ:
+			opset(ACMPUBGE, r)
+			opset(ACMPUBGT, r)
+			opset(ACMPUBLE, r)
+			opset(ACMPUBLT, r)
+			opset(ACMPUBNE, r)
+		case AMOVDEQ:
+			opset(AMOVDGE, r)
+			opset(AMOVDGT, r)
+			opset(AMOVDLE, r)
+			opset(AMOVDLT, r)
+			opset(AMOVDNE, r)
+		case AVL:
+			opset(AVLLEZB, r)
+			opset(AVLLEZH, r)
+			opset(AVLLEZF, r)
+			opset(AVLLEZG, r)
+			opset(AVLREPB, r)
+			opset(AVLREPH, r)
+			opset(AVLREPF, r)
+			opset(AVLREPG, r)
+		case AVLEG:
+			opset(AVLBB, r)
+			opset(AVLEB, r)
+			opset(AVLEH, r)
+			opset(AVLEF, r)
+			opset(AVLEG, r)
+			opset(AVLREP, r)
+		case AVSTEG:
+			opset(AVSTEB, r)
+			opset(AVSTEH, r)
+			opset(AVSTEF, r)
+		case AVSCEG:
+			opset(AVSCEF, r)
+		case AVGEG:
+			opset(AVGEF, r)
+		case AVESLG:
+			opset(AVESLB, r)
+			opset(AVESLH, r)
+			opset(AVESLF, r)
+			opset(AVERLLB, r)
+			opset(AVERLLH, r)
+			opset(AVERLLF, r)
+			opset(AVERLLG, r)
+			opset(AVESRAB, r)
+			opset(AVESRAH, r)
+			opset(AVESRAF, r)
+			opset(AVESRAG, r)
+			opset(AVESRLB, r)
+			opset(AVESRLH, r)
+			opset(AVESRLF, r)
+			opset(AVESRLG, r)
+		case AVLGVG:
+			opset(AVLGVB, r)
+			opset(AVLGVH, r)
+			opset(AVLGVF, r)
+		case AVLVGG:
+			opset(AVLVGB, r)
+			opset(AVLVGH, r)
+			opset(AVLVGF, r)
+		case AVZERO:
+			opset(AVONE, r)
+		case AVREPIG:
+			opset(AVREPIB, r)
+			opset(AVREPIH, r)
+			opset(AVREPIF, r)
+		case AVLEIG:
+			opset(AVLEIB, r)
+			opset(AVLEIH, r)
+			opset(AVLEIF, r)
+		case AVGMG:
+			opset(AVGMB, r)
+			opset(AVGMH, r)
+			opset(AVGMF, r)
+		case AVREPG:
+			opset(AVREPB, r)
+			opset(AVREPH, r)
+			opset(AVREPF, r)
+		case AVERIMG:
+			opset(AVERIMB, r)
+			opset(AVERIMH, r)
+			opset(AVERIMF, r)
+		case AVFTCIDB:
+			opset(AWFTCIDB, r)
+		case AVLR:
+			opset(AVUPHB, r)
+			opset(AVUPHH, r)
+			opset(AVUPHF, r)
+			opset(AVUPLHB, r)
+			opset(AVUPLHH, r)
+			opset(AVUPLHF, r)
+			opset(AVUPLB, r)
+			opset(AVUPLHW, r)
+			opset(AVUPLF, r)
+			opset(AVUPLLB, r)
+			opset(AVUPLLH, r)
+			opset(AVUPLLF, r)
+			opset(AVCLZB, r)
+			opset(AVCLZH, r)
+			opset(AVCLZF, r)
+			opset(AVCLZG, r)
+			opset(AVCTZB, r)
+			opset(AVCTZH, r)
+			opset(AVCTZF, r)
+			opset(AVCTZG, r)
+			opset(AVLDEB, r)
+			opset(AWLDEB, r)
+			opset(AVFLCDB, r)
+			opset(AWFLCDB, r)
+			opset(AVFLNDB, r)
+			opset(AWFLNDB, r)
+			opset(AVFLPDB, r)
+			opset(AWFLPDB, r)
+			opset(AVFSQDB, r)
+			opset(AWFSQDB, r)
+			opset(AVISTRB, r)
+			opset(AVISTRH, r)
+			opset(AVISTRF, r)
+			opset(AVISTRBS, r)
+			opset(AVISTRHS, r)
+			opset(AVISTRFS, r)
+			opset(AVLCB, r)
+			opset(AVLCH, r)
+			opset(AVLCF, r)
+			opset(AVLCG, r)
+			opset(AVLPB, r)
+			opset(AVLPH, r)
+			opset(AVLPF, r)
+			opset(AVLPG, r)
+			opset(AVPOPCT, r)
+			opset(AVSEGB, r)
+			opset(AVSEGH, r)
+			opset(AVSEGF, r)
+		case AVECG:
+			opset(AVECB, r)
+			opset(AVECH, r)
+			opset(AVECF, r)
+			opset(AVECLB, r)
+			opset(AVECLH, r)
+			opset(AVECLF, r)
+			opset(AVECLG, r)
+			opset(AWFCDB, r)
+			opset(AWFKDB, r)
+		case AVCEQG:
+			opset(AVCEQB, r)
+			opset(AVCEQH, r)
+			opset(AVCEQF, r)
+			opset(AVCEQBS, r)
+			opset(AVCEQHS, r)
+			opset(AVCEQFS, r)
+			opset(AVCEQGS, r)
+			opset(AVCHB, r)
+			opset(AVCHH, r)
+			opset(AVCHF, r)
+			opset(AVCHG, r)
+			opset(AVCHBS, r)
+			opset(AVCHHS, r)
+			opset(AVCHFS, r)
+			opset(AVCHGS, r)
+			opset(AVCHLB, r)
+			opset(AVCHLH, r)
+			opset(AVCHLF, r)
+			opset(AVCHLG, r)
+			opset(AVCHLBS, r)
+			opset(AVCHLHS, r)
+			opset(AVCHLFS, r)
+			opset(AVCHLGS, r)
+		case AVFAEF:
+			opset(AVFAEB, r)
+			opset(AVFAEH, r)
+			opset(AVFAEBS, r)
+			opset(AVFAEHS, r)
+			opset(AVFAEFS, r)
+			opset(AVFAEZB, r)
+			opset(AVFAEZH, r)
+			opset(AVFAEZF, r)
+			opset(AVFAEZBS, r)
+			opset(AVFAEZHS, r)
+			opset(AVFAEZFS, r)
+			opset(AVFEEB, r)
+			opset(AVFEEH, r)
+			opset(AVFEEF, r)
+			opset(AVFEEBS, r)
+			opset(AVFEEHS, r)
+			opset(AVFEEFS, r)
+			opset(AVFEEZB, r)
+			opset(AVFEEZH, r)
+			opset(AVFEEZF, r)
+			opset(AVFEEZBS, r)
+			opset(AVFEEZHS, r)
+			opset(AVFEEZFS, r)
+			opset(AVFENEB, r)
+			opset(AVFENEH, r)
+			opset(AVFENEF, r)
+			opset(AVFENEBS, r)
+			opset(AVFENEHS, r)
+			opset(AVFENEFS, r)
+			opset(AVFENEZB, r)
+			opset(AVFENEZH, r)
+			opset(AVFENEZF, r)
+			opset(AVFENEZBS, r)
+			opset(AVFENEZHS, r)
+			opset(AVFENEZFS, r)
+		case AVPKSG:
+			opset(AVPKSH, r)
+			opset(AVPKSF, r)
+			opset(AVPKSHS, r)
+			opset(AVPKSFS, r)
+			opset(AVPKSGS, r)
+			opset(AVPKLSH, r)
+			opset(AVPKLSF, r)
+			opset(AVPKLSG, r)
+			opset(AVPKLSHS, r)
+			opset(AVPKLSFS, r)
+			opset(AVPKLSGS, r)
+		case AVAQ:
+			opset(AVAB, r)
+			opset(AVAH, r)
+			opset(AVAF, r)
+			opset(AVAG, r)
+			opset(AVACCB, r)
+			opset(AVACCH, r)
+			opset(AVACCF, r)
+			opset(AVACCG, r)
+			opset(AVACCQ, r)
+			opset(AVN, r)
+			opset(AVNC, r)
+			opset(AVAVGB, r)
+			opset(AVAVGH, r)
+			opset(AVAVGF, r)
+			opset(AVAVGG, r)
+			opset(AVAVGLB, r)
+			opset(AVAVGLH, r)
+			opset(AVAVGLF, r)
+			opset(AVAVGLG, r)
+			opset(AVCKSM, r)
+			opset(AVX, r)
+			opset(AVFADB, r)
+			opset(AWFADB, r)
+			opset(AVFCEDB, r)
+			opset(AVFCEDBS, r)
+			opset(AWFCEDB, r)
+			opset(AWFCEDBS, r)
+			opset(AVFCHDB, r)
+			opset(AVFCHDBS, r)
+			opset(AWFCHDB, r)
+			opset(AWFCHDBS, r)
+			opset(AVFCHEDB, r)
+			opset(AVFCHEDBS, r)
+			opset(AWFCHEDB, r)
+			opset(AWFCHEDBS, r)
+			opset(AVFMDB, r)
+			opset(AWFMDB, r)
+			opset(AVGFMB, r)
+			opset(AVGFMH, r)
+			opset(AVGFMF, r)
+			opset(AVGFMG, r)
+			opset(AVMXB, r)
+			opset(AVMXH, r)
+			opset(AVMXF, r)
+			opset(AVMXG, r)
+			opset(AVMXLB, r)
+			opset(AVMXLH, r)
+			opset(AVMXLF, r)
+			opset(AVMXLG, r)
+			opset(AVMNB, r)
+			opset(AVMNH, r)
+			opset(AVMNF, r)
+			opset(AVMNG, r)
+			opset(AVMNLB, r)
+			opset(AVMNLH, r)
+			opset(AVMNLF, r)
+			opset(AVMNLG, r)
+			opset(AVMRHB, r)
+			opset(AVMRHH, r)
+			opset(AVMRHF, r)
+			opset(AVMRHG, r)
+			opset(AVMRLB, r)
+			opset(AVMRLH, r)
+			opset(AVMRLF, r)
+			opset(AVMRLG, r)
+			opset(AVMEB, r)
+			opset(AVMEH, r)
+			opset(AVMEF, r)
+			opset(AVMLEB, r)
+			opset(AVMLEH, r)
+			opset(AVMLEF, r)
+			opset(AVMOB, r)
+			opset(AVMOH, r)
+			opset(AVMOF, r)
+			opset(AVMLOB, r)
+			opset(AVMLOH, r)
+			opset(AVMLOF, r)
+			opset(AVMHB, r)
+			opset(AVMHH, r)
+			opset(AVMHF, r)
+			opset(AVMLHB, r)
+			opset(AVMLHH, r)
+			opset(AVMLHF, r)
+			opset(AVMLH, r)
+			opset(AVMLHW, r)
+			opset(AVMLF, r)
+			opset(AVNO, r)
+			opset(AVO, r)
+			opset(AVPKH, r)
+			opset(AVPKF, r)
+			opset(AVPKG, r)
+			opset(AVSUMGH, r)
+			opset(AVSUMGF, r)
+			opset(AVSUMQF, r)
+			opset(AVSUMQG, r)
+			opset(AVSUMB, r)
+			opset(AVSUMH, r)
+		case AVERLLVG:
+			opset(AVERLLVB, r)
+			opset(AVERLLVH, r)
+			opset(AVERLLVF, r)
+			opset(AVESLVB, r)
+			opset(AVESLVH, r)
+			opset(AVESLVF, r)
+			opset(AVESLVG, r)
+			opset(AVESRAVB, r)
+			opset(AVESRAVH, r)
+			opset(AVESRAVF, r)
+			opset(AVESRAVG, r)
+			opset(AVESRLVB, r)
+			opset(AVESRLVH, r)
+			opset(AVESRLVF, r)
+			opset(AVESRLVG, r)
+			opset(AVFDDB, r)
+			opset(AWFDDB, r)
+			opset(AVFSDB, r)
+			opset(AWFSDB, r)
+			opset(AVSL, r)
+			opset(AVSLB, r)
+			opset(AVSRA, r)
+			opset(AVSRAB, r)
+			opset(AVSRL, r)
+			opset(AVSRLB, r)
+			opset(AVSF, r)
+			opset(AVSG, r)
+			opset(AVSQ, r)
+			opset(AVSCBIB, r)
+			opset(AVSCBIH, r)
+			opset(AVSCBIF, r)
+			opset(AVSCBIG, r)
+			opset(AVSCBIQ, r)
+		case AVACQ:
+			opset(AVACCCQ, r)
+			opset(AVGFMAB, r)
+			opset(AVGFMAH, r)
+			opset(AVGFMAF, r)
+			opset(AVGFMAG, r)
+			opset(AVMALB, r)
+			opset(AVMALHW, r)
+			opset(AVMALF, r)
+			opset(AVMAHB, r)
+			opset(AVMAHH, r)
+			opset(AVMAHF, r)
+			opset(AVMALHB, r)
+			opset(AVMALHH, r)
+			opset(AVMALHF, r)
+			opset(AVMAEB, r)
+			opset(AVMAEH, r)
+			opset(AVMAEF, r)
+			opset(AVMALEB, r)
+			opset(AVMALEH, r)
+			opset(AVMALEF, r)
+			opset(AVMAOB, r)
+			opset(AVMAOH, r)
+			opset(AVMAOF, r)
+			opset(AVMALOB, r)
+			opset(AVMALOH, r)
+			opset(AVMALOF, r)
+			opset(AVSTRCB, r)
+			opset(AVSTRCH, r)
+			opset(AVSTRCF, r)
+			opset(AVSTRCBS, r)
+			opset(AVSTRCHS, r)
+			opset(AVSTRCFS, r)
+			opset(AVSTRCZB, r)
+			opset(AVSTRCZH, r)
+			opset(AVSTRCZF, r)
+			opset(AVSTRCZBS, r)
+			opset(AVSTRCZHS, r)
+			opset(AVSTRCZFS, r)
+			opset(AVSBCBIQ, r)
+			opset(AVSBIQ, r)
+		case AVSEL:
+			opset(AVFMADB, r)
+			opset(AWFMADB, r)
+			opset(AVFMSDB, r)
+			opset(AWFMSDB, r)
+			opset(AVPERM, r)
+		}
+	}
+}
+
+const (
+	op_A       uint32 = 0x5A00 // FORMAT_RX1        ADD (32)
+	op_AD      uint32 = 0x6A00 // FORMAT_RX1        ADD NORMALIZED (long HFP)
+	op_ADB     uint32 = 0xED1A // FORMAT_RXE        ADD (long BFP)
+	op_ADBR    uint32 = 0xB31A // FORMAT_RRE        ADD (long BFP)
+	op_ADR     uint32 = 0x2A00 // FORMAT_RR         ADD NORMALIZED (long HFP)
+	op_ADTR    uint32 = 0xB3D2 // FORMAT_RRF1       ADD (long DFP)
+	op_ADTRA   uint32 = 0xB3D2 // FORMAT_RRF1       ADD (long DFP)
+	op_AE      uint32 = 0x7A00 // FORMAT_RX1        ADD NORMALIZED (short HFP)
+	op_AEB     uint32 = 0xED0A // FORMAT_RXE        ADD (short BFP)
+	op_AEBR    uint32 = 0xB30A // FORMAT_RRE        ADD (short BFP)
+	op_AER     uint32 = 0x3A00 // FORMAT_RR         ADD NORMALIZED (short HFP)
+	op_AFI     uint32 = 0xC209 // FORMAT_RIL1       ADD IMMEDIATE (32)
+	op_AG      uint32 = 0xE308 // FORMAT_RXY1       ADD (64)
+	op_AGF     uint32 = 0xE318 // FORMAT_RXY1       ADD (64<-32)
+	op_AGFI    uint32 = 0xC208 // FORMAT_RIL1       ADD IMMEDIATE (64<-32)
+	op_AGFR    uint32 = 0xB918 // FORMAT_RRE        ADD (64<-32)
+	op_AGHI    uint32 = 0xA70B // FORMAT_RI1        ADD HALFWORD IMMEDIATE (64)
+	op_AGHIK   uint32 = 0xECD9 // FORMAT_RIE4       ADD IMMEDIATE (64<-16)
+	op_AGR     uint32 = 0xB908 // FORMAT_RRE        ADD (64)
+	op_AGRK    uint32 = 0xB9E8 // FORMAT_RRF1       ADD (64)
+	op_AGSI    uint32 = 0xEB7A // FORMAT_SIY        ADD IMMEDIATE (64<-8)
+	op_AH      uint32 = 0x4A00 // FORMAT_RX1        ADD HALFWORD
+	op_AHHHR   uint32 = 0xB9C8 // FORMAT_RRF1       ADD HIGH (32)
+	op_AHHLR   uint32 = 0xB9D8 // FORMAT_RRF1       ADD HIGH (32)
+	op_AHI     uint32 = 0xA70A // FORMAT_RI1        ADD HALFWORD IMMEDIATE (32)
+	op_AHIK    uint32 = 0xECD8 // FORMAT_RIE4       ADD IMMEDIATE (32<-16)
+	op_AHY     uint32 = 0xE37A // FORMAT_RXY1       ADD HALFWORD
+	op_AIH     uint32 = 0xCC08 // FORMAT_RIL1       ADD IMMEDIATE HIGH (32)
+	op_AL      uint32 = 0x5E00 // FORMAT_RX1        ADD LOGICAL (32)
+	op_ALC     uint32 = 0xE398 // FORMAT_RXY1       ADD LOGICAL WITH CARRY (32)
+	op_ALCG    uint32 = 0xE388 // FORMAT_RXY1       ADD LOGICAL WITH CARRY (64)
+	op_ALCGR   uint32 = 0xB988 // FORMAT_RRE        ADD LOGICAL WITH CARRY (64)
+	op_ALCR    uint32 = 0xB998 // FORMAT_RRE        ADD LOGICAL WITH CARRY (32)
+	op_ALFI    uint32 = 0xC20B // FORMAT_RIL1       ADD LOGICAL IMMEDIATE (32)
+	op_ALG     uint32 = 0xE30A // FORMAT_RXY1       ADD LOGICAL (64)
+	op_ALGF    uint32 = 0xE31A // FORMAT_RXY1       ADD LOGICAL (64<-32)
+	op_ALGFI   uint32 = 0xC20A // FORMAT_RIL1       ADD LOGICAL IMMEDIATE (64<-32)
+	op_ALGFR   uint32 = 0xB91A // FORMAT_RRE        ADD LOGICAL (64<-32)
+	op_ALGHSIK uint32 = 0xECDB // FORMAT_RIE4       ADD LOGICAL WITH SIGNED IMMEDIATE (64<-16)
+	op_ALGR    uint32 = 0xB90A // FORMAT_RRE        ADD LOGICAL (64)
+	op_ALGRK   uint32 = 0xB9EA // FORMAT_RRF1       ADD LOGICAL (64)
+	op_ALGSI   uint32 = 0xEB7E // FORMAT_SIY        ADD LOGICAL WITH SIGNED IMMEDIATE (64<-8)
+	op_ALHHHR  uint32 = 0xB9CA // FORMAT_RRF1       ADD LOGICAL HIGH (32)
+	op_ALHHLR  uint32 = 0xB9DA // FORMAT_RRF1       ADD LOGICAL HIGH (32)
+	op_ALHSIK  uint32 = 0xECDA // FORMAT_RIE4       ADD LOGICAL WITH SIGNED IMMEDIATE (32<-16)
+	op_ALR     uint32 = 0x1E00 // FORMAT_RR         ADD LOGICAL (32)
+	op_ALRK    uint32 = 0xB9FA // FORMAT_RRF1       ADD LOGICAL (32)
+	op_ALSI    uint32 = 0xEB6E // FORMAT_SIY        ADD LOGICAL WITH SIGNED IMMEDIATE (32<-8)
+	op_ALSIH   uint32 = 0xCC0A // FORMAT_RIL1       ADD LOGICAL WITH SIGNED IMMEDIATE HIGH (32)
+	op_ALSIHN  uint32 = 0xCC0B // FORMAT_RIL1       ADD LOGICAL WITH SIGNED IMMEDIATE HIGH (32)
+	op_ALY     uint32 = 0xE35E // FORMAT_RXY1       ADD LOGICAL (32)
+	op_AP      uint32 = 0xFA00 // FORMAT_SS2        ADD DECIMAL
+	op_AR      uint32 = 0x1A00 // FORMAT_RR         ADD (32)
+	op_ARK     uint32 = 0xB9F8 // FORMAT_RRF1       ADD (32)
+	op_ASI     uint32 = 0xEB6A // FORMAT_SIY        ADD IMMEDIATE (32<-8)
+	op_AU      uint32 = 0x7E00 // FORMAT_RX1        ADD UNNORMALIZED (short HFP)
+	op_AUR     uint32 = 0x3E00 // FORMAT_RR         ADD UNNORMALIZED (short HFP)
+	op_AW      uint32 = 0x6E00 // FORMAT_RX1        ADD UNNORMALIZED (long HFP)
+	op_AWR     uint32 = 0x2E00 // FORMAT_RR         ADD UNNORMALIZED (long HFP)
+	op_AXBR    uint32 = 0xB34A // FORMAT_RRE        ADD (extended BFP)
+	op_AXR     uint32 = 0x3600 // FORMAT_RR         ADD NORMALIZED (extended HFP)
+	op_AXTR    uint32 = 0xB3DA // FORMAT_RRF1       ADD (extended DFP)
+	op_AXTRA   uint32 = 0xB3DA // FORMAT_RRF1       ADD (extended DFP)
+	op_AY      uint32 = 0xE35A // FORMAT_RXY1       ADD (32)
+	op_BAKR    uint32 = 0xB240 // FORMAT_RRE        BRANCH AND STACK
+	op_BAL     uint32 = 0x4500 // FORMAT_RX1        BRANCH AND LINK
+	op_BALR    uint32 = 0x0500 // FORMAT_RR         BRANCH AND LINK
+	op_BAS     uint32 = 0x4D00 // FORMAT_RX1        BRANCH AND SAVE
+	op_BASR    uint32 = 0x0D00 // FORMAT_RR         BRANCH AND SAVE
+	op_BASSM   uint32 = 0x0C00 // FORMAT_RR         BRANCH AND SAVE AND SET MODE
+	op_BC      uint32 = 0x4700 // FORMAT_RX2        BRANCH ON CONDITION
+	op_BCR     uint32 = 0x0700 // FORMAT_RR         BRANCH ON CONDITION
+	op_BCT     uint32 = 0x4600 // FORMAT_RX1        BRANCH ON COUNT (32)
+	op_BCTG    uint32 = 0xE346 // FORMAT_RXY1       BRANCH ON COUNT (64)
+	op_BCTGR   uint32 = 0xB946 // FORMAT_RRE        BRANCH ON COUNT (64)
+	op_BCTR    uint32 = 0x0600 // FORMAT_RR         BRANCH ON COUNT (32)
+	op_BPP     uint32 = 0xC700 // FORMAT_SMI        BRANCH PREDICTION PRELOAD
+	op_BPRP    uint32 = 0xC500 // FORMAT_MII        BRANCH PREDICTION RELATIVE PRELOAD
+	op_BRAS    uint32 = 0xA705 // FORMAT_RI2        BRANCH RELATIVE AND SAVE
+	op_BRASL   uint32 = 0xC005 // FORMAT_RIL2       BRANCH RELATIVE AND SAVE LONG
+	op_BRC     uint32 = 0xA704 // FORMAT_RI3        BRANCH RELATIVE ON CONDITION
+	op_BRCL    uint32 = 0xC004 // FORMAT_RIL3       BRANCH RELATIVE ON CONDITION LONG
+	op_BRCT    uint32 = 0xA706 // FORMAT_RI2        BRANCH RELATIVE ON COUNT (32)
+	op_BRCTG   uint32 = 0xA707 // FORMAT_RI2        BRANCH RELATIVE ON COUNT (64)
+	op_BRCTH   uint32 = 0xCC06 // FORMAT_RIL2       BRANCH RELATIVE ON COUNT HIGH (32)
+	op_BRXH    uint32 = 0x8400 // FORMAT_RSI        BRANCH RELATIVE ON INDEX HIGH (32)
+	op_BRXHG   uint32 = 0xEC44 // FORMAT_RIE5       BRANCH RELATIVE ON INDEX HIGH (64)
+	op_BRXLE   uint32 = 0x8500 // FORMAT_RSI        BRANCH RELATIVE ON INDEX LOW OR EQ. (32)
+	op_BRXLG   uint32 = 0xEC45 // FORMAT_RIE5       BRANCH RELATIVE ON INDEX LOW OR EQ. (64)
+	op_BSA     uint32 = 0xB25A // FORMAT_RRE        BRANCH AND SET AUTHORITY
+	op_BSG     uint32 = 0xB258 // FORMAT_RRE        BRANCH IN SUBSPACE GROUP
+	op_BSM     uint32 = 0x0B00 // FORMAT_RR         BRANCH AND SET MODE
+	op_BXH     uint32 = 0x8600 // FORMAT_RS1        BRANCH ON INDEX HIGH (32)
+	op_BXHG    uint32 = 0xEB44 // FORMAT_RSY1       BRANCH ON INDEX HIGH (64)
+	op_BXLE    uint32 = 0x8700 // FORMAT_RS1        BRANCH ON INDEX LOW OR EQUAL (32)
+	op_BXLEG   uint32 = 0xEB45 // FORMAT_RSY1       BRANCH ON INDEX LOW OR EQUAL (64)
+	op_C       uint32 = 0x5900 // FORMAT_RX1        COMPARE (32)
+	op_CD      uint32 = 0x6900 // FORMAT_RX1        COMPARE (long HFP)
+	op_CDB     uint32 = 0xED19 // FORMAT_RXE        COMPARE (long BFP)
+	op_CDBR    uint32 = 0xB319 // FORMAT_RRE        COMPARE (long BFP)
+	op_CDFBR   uint32 = 0xB395 // FORMAT_RRE        CONVERT FROM FIXED (32 to long BFP)
+	op_CDFBRA  uint32 = 0xB395 // FORMAT_RRF5       CONVERT FROM FIXED (32 to long BFP)
+	op_CDFR    uint32 = 0xB3B5 // FORMAT_RRE        CONVERT FROM FIXED (32 to long HFP)
+	op_CDFTR   uint32 = 0xB951 // FORMAT_RRE        CONVERT FROM FIXED (32 to long DFP)
+	op_CDGBR   uint32 = 0xB3A5 // FORMAT_RRE        CONVERT FROM FIXED (64 to long BFP)
+	op_CDGBRA  uint32 = 0xB3A5 // FORMAT_RRF5       CONVERT FROM FIXED (64 to long BFP)
+	op_CDGR    uint32 = 0xB3C5 // FORMAT_RRE        CONVERT FROM FIXED (64 to long HFP)
+	op_CDGTR   uint32 = 0xB3F1 // FORMAT_RRE        CONVERT FROM FIXED (64 to long DFP)
+	op_CDGTRA  uint32 = 0xB3F1 // FORMAT_RRF5       CONVERT FROM FIXED (64 to long DFP)
+	op_CDLFBR  uint32 = 0xB391 // FORMAT_RRF5       CONVERT FROM LOGICAL (32 to long BFP)
+	op_CDLFTR  uint32 = 0xB953 // FORMAT_RRF5       CONVERT FROM LOGICAL (32 to long DFP)
+	op_CDLGBR  uint32 = 0xB3A1 // FORMAT_RRF5       CONVERT FROM LOGICAL (64 to long BFP)
+	op_CDLGTR  uint32 = 0xB952 // FORMAT_RRF5       CONVERT FROM LOGICAL (64 to long DFP)
+	op_CDR     uint32 = 0x2900 // FORMAT_RR         COMPARE (long HFP)
+	op_CDS     uint32 = 0xBB00 // FORMAT_RS1        COMPARE DOUBLE AND SWAP (32)
+	op_CDSG    uint32 = 0xEB3E // FORMAT_RSY1       COMPARE DOUBLE AND SWAP (64)
+	op_CDSTR   uint32 = 0xB3F3 // FORMAT_RRE        CONVERT FROM SIGNED PACKED (64 to long DFP)
+	op_CDSY    uint32 = 0xEB31 // FORMAT_RSY1       COMPARE DOUBLE AND SWAP (32)
+	op_CDTR    uint32 = 0xB3E4 // FORMAT_RRE        COMPARE (long DFP)
+	op_CDUTR   uint32 = 0xB3F2 // FORMAT_RRE        CONVERT FROM UNSIGNED PACKED (64 to long DFP)
+	op_CDZT    uint32 = 0xEDAA // FORMAT_RSL        CONVERT FROM ZONED (to long DFP)
+	op_CE      uint32 = 0x7900 // FORMAT_RX1        COMPARE (short HFP)
+	op_CEB     uint32 = 0xED09 // FORMAT_RXE        COMPARE (short BFP)
+	op_CEBR    uint32 = 0xB309 // FORMAT_RRE        COMPARE (short BFP)
+	op_CEDTR   uint32 = 0xB3F4 // FORMAT_RRE        COMPARE BIASED EXPONENT (long DFP)
+	op_CEFBR   uint32 = 0xB394 // FORMAT_RRE        CONVERT FROM FIXED (32 to short BFP)
+	op_CEFBRA  uint32 = 0xB394 // FORMAT_RRF5       CONVERT FROM FIXED (32 to short BFP)
+	op_CEFR    uint32 = 0xB3B4 // FORMAT_RRE        CONVERT FROM FIXED (32 to short HFP)
+	op_CEGBR   uint32 = 0xB3A4 // FORMAT_RRE        CONVERT FROM FIXED (64 to short BFP)
+	op_CEGBRA  uint32 = 0xB3A4 // FORMAT_RRF5       CONVERT FROM FIXED (64 to short BFP)
+	op_CEGR    uint32 = 0xB3C4 // FORMAT_RRE        CONVERT FROM FIXED (64 to short HFP)
+	op_CELFBR  uint32 = 0xB390 // FORMAT_RRF5       CONVERT FROM LOGICAL (32 to short BFP)
+	op_CELGBR  uint32 = 0xB3A0 // FORMAT_RRF5       CONVERT FROM LOGICAL (64 to short BFP)
+	op_CER     uint32 = 0x3900 // FORMAT_RR         COMPARE (short HFP)
+	op_CEXTR   uint32 = 0xB3FC // FORMAT_RRE        COMPARE BIASED EXPONENT (extended DFP)
+	op_CFC     uint32 = 0xB21A // FORMAT_S          COMPARE AND FORM CODEWORD
+	op_CFDBR   uint32 = 0xB399 // FORMAT_RRF5       CONVERT TO FIXED (long BFP to 32)
+	op_CFDBRA  uint32 = 0xB399 // FORMAT_RRF5       CONVERT TO FIXED (long BFP to 32)
+	op_CFDR    uint32 = 0xB3B9 // FORMAT_RRF5       CONVERT TO FIXED (long HFP to 32)
+	op_CFDTR   uint32 = 0xB941 // FORMAT_RRF5       CONVERT TO FIXED (long DFP to 32)
+	op_CFEBR   uint32 = 0xB398 // FORMAT_RRF5       CONVERT TO FIXED (short BFP to 32)
+	op_CFEBRA  uint32 = 0xB398 // FORMAT_RRF5       CONVERT TO FIXED (short BFP to 32)
+	op_CFER    uint32 = 0xB3B8 // FORMAT_RRF5       CONVERT TO FIXED (short HFP to 32)
+	op_CFI     uint32 = 0xC20D // FORMAT_RIL1       COMPARE IMMEDIATE (32)
+	op_CFXBR   uint32 = 0xB39A // FORMAT_RRF5       CONVERT TO FIXED (extended BFP to 32)
+	op_CFXBRA  uint32 = 0xB39A // FORMAT_RRF5       CONVERT TO FIXED (extended BFP to 32)
+	op_CFXR    uint32 = 0xB3BA // FORMAT_RRF5       CONVERT TO FIXED (extended HFP to 32)
+	op_CFXTR   uint32 = 0xB949 // FORMAT_RRF5       CONVERT TO FIXED (extended DFP to 32)
+	op_CG      uint32 = 0xE320 // FORMAT_RXY1       COMPARE (64)
+	op_CGDBR   uint32 = 0xB3A9 // FORMAT_RRF5       CONVERT TO FIXED (long BFP to 64)
+	op_CGDBRA  uint32 = 0xB3A9 // FORMAT_RRF5       CONVERT TO FIXED (long BFP to 64)
+	op_CGDR    uint32 = 0xB3C9 // FORMAT_RRF5       CONVERT TO FIXED (long HFP to 64)
+	op_CGDTR   uint32 = 0xB3E1 // FORMAT_RRF5       CONVERT TO FIXED (long DFP to 64)
+	op_CGDTRA  uint32 = 0xB3E1 // FORMAT_RRF5       CONVERT TO FIXED (long DFP to 64)
+	op_CGEBR   uint32 = 0xB3A8 // FORMAT_RRF5       CONVERT TO FIXED (short BFP to 64)
+	op_CGEBRA  uint32 = 0xB3A8 // FORMAT_RRF5       CONVERT TO FIXED (short BFP to 64)
+	op_CGER    uint32 = 0xB3C8 // FORMAT_RRF5       CONVERT TO FIXED (short HFP to 64)
+	op_CGF     uint32 = 0xE330 // FORMAT_RXY1       COMPARE (64<-32)
+	op_CGFI    uint32 = 0xC20C // FORMAT_RIL1       COMPARE IMMEDIATE (64<-32)
+	op_CGFR    uint32 = 0xB930 // FORMAT_RRE        COMPARE (64<-32)
+	op_CGFRL   uint32 = 0xC60C // FORMAT_RIL2       COMPARE RELATIVE LONG (64<-32)
+	op_CGH     uint32 = 0xE334 // FORMAT_RXY1       COMPARE HALFWORD (64<-16)
+	op_CGHI    uint32 = 0xA70F // FORMAT_RI1        COMPARE HALFWORD IMMEDIATE (64<-16)
+	op_CGHRL   uint32 = 0xC604 // FORMAT_RIL2       COMPARE HALFWORD RELATIVE LONG (64<-16)
+	op_CGHSI   uint32 = 0xE558 // FORMAT_SIL        COMPARE HALFWORD IMMEDIATE (64<-16)
+	op_CGIB    uint32 = 0xECFC // FORMAT_RIS        COMPARE IMMEDIATE AND BRANCH (64<-8)
+	op_CGIJ    uint32 = 0xEC7C // FORMAT_RIE3       COMPARE IMMEDIATE AND BRANCH RELATIVE (64<-8)
+	op_CGIT    uint32 = 0xEC70 // FORMAT_RIE1       COMPARE IMMEDIATE AND TRAP (64<-16)
+	op_CGR     uint32 = 0xB920 // FORMAT_RRE        COMPARE (64)
+	op_CGRB    uint32 = 0xECE4 // FORMAT_RRS        COMPARE AND BRANCH (64)
+	op_CGRJ    uint32 = 0xEC64 // FORMAT_RIE2       COMPARE AND BRANCH RELATIVE (64)
+	op_CGRL    uint32 = 0xC608 // FORMAT_RIL2       COMPARE RELATIVE LONG (64)
+	op_CGRT    uint32 = 0xB960 // FORMAT_RRF3       COMPARE AND TRAP (64)
+	op_CGXBR   uint32 = 0xB3AA // FORMAT_RRF5       CONVERT TO FIXED (extended BFP to 64)
+	op_CGXBRA  uint32 = 0xB3AA // FORMAT_RRF5       CONVERT TO FIXED (extended BFP to 64)
+	op_CGXR    uint32 = 0xB3CA // FORMAT_RRF5       CONVERT TO FIXED (extended HFP to 64)
+	op_CGXTR   uint32 = 0xB3E9 // FORMAT_RRF5       CONVERT TO FIXED (extended DFP to 64)
+	op_CGXTRA  uint32 = 0xB3E9 // FORMAT_RRF5       CONVERT TO FIXED (extended DFP to 64)
+	op_CH      uint32 = 0x4900 // FORMAT_RX1        COMPARE HALFWORD (32<-16)
+	op_CHF     uint32 = 0xE3CD // FORMAT_RXY1       COMPARE HIGH (32)
+	op_CHHR    uint32 = 0xB9CD // FORMAT_RRE        COMPARE HIGH (32)
+	op_CHHSI   uint32 = 0xE554 // FORMAT_SIL        COMPARE HALFWORD IMMEDIATE (16)
+	op_CHI     uint32 = 0xA70E // FORMAT_RI1        COMPARE HALFWORD IMMEDIATE (32<-16)
+	op_CHLR    uint32 = 0xB9DD // FORMAT_RRE        COMPARE HIGH (32)
+	op_CHRL    uint32 = 0xC605 // FORMAT_RIL2       COMPARE HALFWORD RELATIVE LONG (32<-16)
+	op_CHSI    uint32 = 0xE55C // FORMAT_SIL        COMPARE HALFWORD IMMEDIATE (32<-16)
+	op_CHY     uint32 = 0xE379 // FORMAT_RXY1       COMPARE HALFWORD (32<-16)
+	op_CIB     uint32 = 0xECFE // FORMAT_RIS        COMPARE IMMEDIATE AND BRANCH (32<-8)
+	op_CIH     uint32 = 0xCC0D // FORMAT_RIL1       COMPARE IMMEDIATE HIGH (32)
+	op_CIJ     uint32 = 0xEC7E // FORMAT_RIE3       COMPARE IMMEDIATE AND BRANCH RELATIVE (32<-8)
+	op_CIT     uint32 = 0xEC72 // FORMAT_RIE1       COMPARE IMMEDIATE AND TRAP (32<-16)
+	op_CKSM    uint32 = 0xB241 // FORMAT_RRE        CHECKSUM
+	op_CL      uint32 = 0x5500 // FORMAT_RX1        COMPARE LOGICAL (32)
+	op_CLC     uint32 = 0xD500 // FORMAT_SS1        COMPARE LOGICAL (character)
+	op_CLCL    uint32 = 0x0F00 // FORMAT_RR         COMPARE LOGICAL LONG
+	op_CLCLE   uint32 = 0xA900 // FORMAT_RS1        COMPARE LOGICAL LONG EXTENDED
+	op_CLCLU   uint32 = 0xEB8F // FORMAT_RSY1       COMPARE LOGICAL LONG UNICODE
+	op_CLFDBR  uint32 = 0xB39D // FORMAT_RRF5       CONVERT TO LOGICAL (long BFP to 32)
+	op_CLFDTR  uint32 = 0xB943 // FORMAT_RRF5       CONVERT TO LOGICAL (long DFP to 32)
+	op_CLFEBR  uint32 = 0xB39C // FORMAT_RRF5       CONVERT TO LOGICAL (short BFP to 32)
+	op_CLFHSI  uint32 = 0xE55D // FORMAT_SIL        COMPARE LOGICAL IMMEDIATE (32<-16)
+	op_CLFI    uint32 = 0xC20F // FORMAT_RIL1       COMPARE LOGICAL IMMEDIATE (32)
+	op_CLFIT   uint32 = 0xEC73 // FORMAT_RIE1       COMPARE LOGICAL IMMEDIATE AND TRAP (32<-16)
+	op_CLFXBR  uint32 = 0xB39E // FORMAT_RRF5       CONVERT TO LOGICAL (extended BFP to 32)
+	op_CLFXTR  uint32 = 0xB94B // FORMAT_RRF5       CONVERT TO LOGICAL (extended DFP to 32)
+	op_CLG     uint32 = 0xE321 // FORMAT_RXY1       COMPARE LOGICAL (64)
+	op_CLGDBR  uint32 = 0xB3AD // FORMAT_RRF5       CONVERT TO LOGICAL (long BFP to 64)
+	op_CLGDTR  uint32 = 0xB942 // FORMAT_RRF5       CONVERT TO LOGICAL (long DFP to 64)
+	op_CLGEBR  uint32 = 0xB3AC // FORMAT_RRF5       CONVERT TO LOGICAL (short BFP to 64)
+	op_CLGF    uint32 = 0xE331 // FORMAT_RXY1       COMPARE LOGICAL (64<-32)
+	op_CLGFI   uint32 = 0xC20E // FORMAT_RIL1       COMPARE LOGICAL IMMEDIATE (64<-32)
+	op_CLGFR   uint32 = 0xB931 // FORMAT_RRE        COMPARE LOGICAL (64<-32)
+	op_CLGFRL  uint32 = 0xC60E // FORMAT_RIL2       COMPARE LOGICAL RELATIVE LONG (64<-32)
+	op_CLGHRL  uint32 = 0xC606 // FORMAT_RIL2       COMPARE LOGICAL RELATIVE LONG (64<-16)
+	op_CLGHSI  uint32 = 0xE559 // FORMAT_SIL        COMPARE LOGICAL IMMEDIATE (64<-16)
+	op_CLGIB   uint32 = 0xECFD // FORMAT_RIS        COMPARE LOGICAL IMMEDIATE AND BRANCH (64<-8)
+	op_CLGIJ   uint32 = 0xEC7D // FORMAT_RIE3       COMPARE LOGICAL IMMEDIATE AND BRANCH RELATIVE (64<-8)
+	op_CLGIT   uint32 = 0xEC71 // FORMAT_RIE1       COMPARE LOGICAL IMMEDIATE AND TRAP (64<-16)
+	op_CLGR    uint32 = 0xB921 // FORMAT_RRE        COMPARE LOGICAL (64)
+	op_CLGRB   uint32 = 0xECE5 // FORMAT_RRS        COMPARE LOGICAL AND BRANCH (64)
+	op_CLGRJ   uint32 = 0xEC65 // FORMAT_RIE2       COMPARE LOGICAL AND BRANCH RELATIVE (64)
+	op_CLGRL   uint32 = 0xC60A // FORMAT_RIL2       COMPARE LOGICAL RELATIVE LONG (64)
+	op_CLGRT   uint32 = 0xB961 // FORMAT_RRF3       COMPARE LOGICAL AND TRAP (64)
+	op_CLGT    uint32 = 0xEB2B // FORMAT_RSY2       COMPARE LOGICAL AND TRAP (64)
+	op_CLGXBR  uint32 = 0xB3AE // FORMAT_RRF5       CONVERT TO LOGICAL (extended BFP to 64)
+	op_CLGXTR  uint32 = 0xB94A // FORMAT_RRF5       CONVERT TO LOGICAL (extended DFP to 64)
+	op_CLHF    uint32 = 0xE3CF // FORMAT_RXY1       COMPARE LOGICAL HIGH (32)
+	op_CLHHR   uint32 = 0xB9CF // FORMAT_RRE        COMPARE LOGICAL HIGH (32)
+	op_CLHHSI  uint32 = 0xE555 // FORMAT_SIL        COMPARE LOGICAL IMMEDIATE (16)
+	op_CLHLR   uint32 = 0xB9DF // FORMAT_RRE        COMPARE LOGICAL HIGH (32)
+	op_CLHRL   uint32 = 0xC607 // FORMAT_RIL2       COMPARE LOGICAL RELATIVE LONG (32<-16)
+	op_CLI     uint32 = 0x9500 // FORMAT_SI         COMPARE LOGICAL (immediate)
+	op_CLIB    uint32 = 0xECFF // FORMAT_RIS        COMPARE LOGICAL IMMEDIATE AND BRANCH (32<-8)
+	op_CLIH    uint32 = 0xCC0F // FORMAT_RIL1       COMPARE LOGICAL IMMEDIATE HIGH (32)
+	op_CLIJ    uint32 = 0xEC7F // FORMAT_RIE3       COMPARE LOGICAL IMMEDIATE AND BRANCH RELATIVE (32<-8)
+	op_CLIY    uint32 = 0xEB55 // FORMAT_SIY        COMPARE LOGICAL (immediate)
+	op_CLM     uint32 = 0xBD00 // FORMAT_RS2        COMPARE LOGICAL CHAR. UNDER MASK (low)
+	op_CLMH    uint32 = 0xEB20 // FORMAT_RSY2       COMPARE LOGICAL CHAR. UNDER MASK (high)
+	op_CLMY    uint32 = 0xEB21 // FORMAT_RSY2       COMPARE LOGICAL CHAR. UNDER MASK (low)
+	op_CLR     uint32 = 0x1500 // FORMAT_RR         COMPARE LOGICAL (32)
+	op_CLRB    uint32 = 0xECF7 // FORMAT_RRS        COMPARE LOGICAL AND BRANCH (32)
+	op_CLRJ    uint32 = 0xEC77 // FORMAT_RIE2       COMPARE LOGICAL AND BRANCH RELATIVE (32)
+	op_CLRL    uint32 = 0xC60F // FORMAT_RIL2       COMPARE LOGICAL RELATIVE LONG (32)
+	op_CLRT    uint32 = 0xB973 // FORMAT_RRF3       COMPARE LOGICAL AND TRAP (32)
+	op_CLST    uint32 = 0xB25D // FORMAT_RRE        COMPARE LOGICAL STRING
+	op_CLT     uint32 = 0xEB23 // FORMAT_RSY2       COMPARE LOGICAL AND TRAP (32)
+	op_CLY     uint32 = 0xE355 // FORMAT_RXY1       COMPARE LOGICAL (32)
+	op_CMPSC   uint32 = 0xB263 // FORMAT_RRE        COMPRESSION CALL
+	op_CP      uint32 = 0xF900 // FORMAT_SS2        COMPARE DECIMAL
+	op_CPSDR   uint32 = 0xB372 // FORMAT_RRF2       COPY SIGN (long)
+	op_CPYA    uint32 = 0xB24D // FORMAT_RRE        COPY ACCESS
+	op_CR      uint32 = 0x1900 // FORMAT_RR         COMPARE (32)
+	op_CRB     uint32 = 0xECF6 // FORMAT_RRS        COMPARE AND BRANCH (32)
+	op_CRDTE   uint32 = 0xB98F // FORMAT_RRF2       COMPARE AND REPLACE DAT TABLE ENTRY
+	op_CRJ     uint32 = 0xEC76 // FORMAT_RIE2       COMPARE AND BRANCH RELATIVE (32)
+	op_CRL     uint32 = 0xC60D // FORMAT_RIL2       COMPARE RELATIVE LONG (32)
+	op_CRT     uint32 = 0xB972 // FORMAT_RRF3       COMPARE AND TRAP (32)
+	op_CS      uint32 = 0xBA00 // FORMAT_RS1        COMPARE AND SWAP (32)
+	op_CSCH    uint32 = 0xB230 // FORMAT_S          CLEAR SUBCHANNEL
+	op_CSDTR   uint32 = 0xB3E3 // FORMAT_RRF4       CONVERT TO SIGNED PACKED (long DFP to 64)
+	op_CSG     uint32 = 0xEB30 // FORMAT_RSY1       COMPARE AND SWAP (64)
+	op_CSP     uint32 = 0xB250 // FORMAT_RRE        COMPARE AND SWAP AND PURGE
+	op_CSPG    uint32 = 0xB98A // FORMAT_RRE        COMPARE AND SWAP AND PURGE
+	op_CSST    uint32 = 0xC802 // FORMAT_SSF        COMPARE AND SWAP AND STORE
+	op_CSXTR   uint32 = 0xB3EB // FORMAT_RRF4       CONVERT TO SIGNED PACKED (extended DFP to 128)
+	op_CSY     uint32 = 0xEB14 // FORMAT_RSY1       COMPARE AND SWAP (32)
+	op_CU12    uint32 = 0xB2A7 // FORMAT_RRF3       CONVERT UTF-8 TO UTF-16
+	op_CU14    uint32 = 0xB9B0 // FORMAT_RRF3       CONVERT UTF-8 TO UTF-32
+	op_CU21    uint32 = 0xB2A6 // FORMAT_RRF3       CONVERT UTF-16 TO UTF-8
+	op_CU24    uint32 = 0xB9B1 // FORMAT_RRF3       CONVERT UTF-16 TO UTF-32
+	op_CU41    uint32 = 0xB9B2 // FORMAT_RRE        CONVERT UTF-32 TO UTF-8
+	op_CU42    uint32 = 0xB9B3 // FORMAT_RRE        CONVERT UTF-32 TO UTF-16
+	op_CUDTR   uint32 = 0xB3E2 // FORMAT_RRE        CONVERT TO UNSIGNED PACKED (long DFP to 64)
+	op_CUSE    uint32 = 0xB257 // FORMAT_RRE        COMPARE UNTIL SUBSTRING EQUAL
+	op_CUTFU   uint32 = 0xB2A7 // FORMAT_RRF3       CONVERT UTF-8 TO UNICODE
+	op_CUUTF   uint32 = 0xB2A6 // FORMAT_RRF3       CONVERT UNICODE TO UTF-8
+	op_CUXTR   uint32 = 0xB3EA // FORMAT_RRE        CONVERT TO UNSIGNED PACKED (extended DFP to 128)
+	op_CVB     uint32 = 0x4F00 // FORMAT_RX1        CONVERT TO BINARY (32)
+	op_CVBG    uint32 = 0xE30E // FORMAT_RXY1       CONVERT TO BINARY (64)
+	op_CVBY    uint32 = 0xE306 // FORMAT_RXY1       CONVERT TO BINARY (32)
+	op_CVD     uint32 = 0x4E00 // FORMAT_RX1        CONVERT TO DECIMAL (32)
+	op_CVDG    uint32 = 0xE32E // FORMAT_RXY1       CONVERT TO DECIMAL (64)
+	op_CVDY    uint32 = 0xE326 // FORMAT_RXY1       CONVERT TO DECIMAL (32)
+	op_CXBR    uint32 = 0xB349 // FORMAT_RRE        COMPARE (extended BFP)
+	op_CXFBR   uint32 = 0xB396 // FORMAT_RRE        CONVERT FROM FIXED (32 to extended BFP)
+	op_CXFBRA  uint32 = 0xB396 // FORMAT_RRF5       CONVERT FROM FIXED (32 to extended BFP)
+	op_CXFR    uint32 = 0xB3B6 // FORMAT_RRE        CONVERT FROM FIXED (32 to extended HFP)
+	op_CXFTR   uint32 = 0xB959 // FORMAT_RRE        CONVERT FROM FIXED (32 to extended DFP)
+	op_CXGBR   uint32 = 0xB3A6 // FORMAT_RRE        CONVERT FROM FIXED (64 to extended BFP)
+	op_CXGBRA  uint32 = 0xB3A6 // FORMAT_RRF5       CONVERT FROM FIXED (64 to extended BFP)
+	op_CXGR    uint32 = 0xB3C6 // FORMAT_RRE        CONVERT FROM FIXED (64 to extended HFP)
+	op_CXGTR   uint32 = 0xB3F9 // FORMAT_RRE        CONVERT FROM FIXED (64 to extended DFP)
+	op_CXGTRA  uint32 = 0xB3F9 // FORMAT_RRF5       CONVERT FROM FIXED (64 to extended DFP)
+	op_CXLFBR  uint32 = 0xB392 // FORMAT_RRF5       CONVERT FROM LOGICAL (32 to extended BFP)
+	op_CXLFTR  uint32 = 0xB95B // FORMAT_RRF5       CONVERT FROM LOGICAL (32 to extended DFP)
+	op_CXLGBR  uint32 = 0xB3A2 // FORMAT_RRF5       CONVERT FROM LOGICAL (64 to extended BFP)
+	op_CXLGTR  uint32 = 0xB95A // FORMAT_RRF5       CONVERT FROM LOGICAL (64 to extended DFP)
+	op_CXR     uint32 = 0xB369 // FORMAT_RRE        COMPARE (extended HFP)
+	op_CXSTR   uint32 = 0xB3FB // FORMAT_RRE        CONVERT FROM SIGNED PACKED (128 to extended DFP)
+	op_CXTR    uint32 = 0xB3EC // FORMAT_RRE        COMPARE (extended DFP)
+	op_CXUTR   uint32 = 0xB3FA // FORMAT_RRE        CONVERT FROM UNSIGNED PACKED (128 to ext. DFP)
+	op_CXZT    uint32 = 0xEDAB // FORMAT_RSL        CONVERT FROM ZONED (to extended DFP)
+	op_CY      uint32 = 0xE359 // FORMAT_RXY1       COMPARE (32)
+	op_CZDT    uint32 = 0xEDA8 // FORMAT_RSL        CONVERT TO ZONED (from long DFP)
+	op_CZXT    uint32 = 0xEDA9 // FORMAT_RSL        CONVERT TO ZONED (from extended DFP)
+	op_D       uint32 = 0x5D00 // FORMAT_RX1        DIVIDE (32<-64)
+	op_DD      uint32 = 0x6D00 // FORMAT_RX1        DIVIDE (long HFP)
+	op_DDB     uint32 = 0xED1D // FORMAT_RXE        DIVIDE (long BFP)
+	op_DDBR    uint32 = 0xB31D // FORMAT_RRE        DIVIDE (long BFP)
+	op_DDR     uint32 = 0x2D00 // FORMAT_RR         DIVIDE (long HFP)
+	op_DDTR    uint32 = 0xB3D1 // FORMAT_RRF1       DIVIDE (long DFP)
+	op_DDTRA   uint32 = 0xB3D1 // FORMAT_RRF1       DIVIDE (long DFP)
+	op_DE      uint32 = 0x7D00 // FORMAT_RX1        DIVIDE (short HFP)
+	op_DEB     uint32 = 0xED0D // FORMAT_RXE        DIVIDE (short BFP)
+	op_DEBR    uint32 = 0xB30D // FORMAT_RRE        DIVIDE (short BFP)
+	op_DER     uint32 = 0x3D00 // FORMAT_RR         DIVIDE (short HFP)
+	op_DIDBR   uint32 = 0xB35B // FORMAT_RRF2       DIVIDE TO INTEGER (long BFP)
+	op_DIEBR   uint32 = 0xB353 // FORMAT_RRF2       DIVIDE TO INTEGER (short BFP)
+	op_DL      uint32 = 0xE397 // FORMAT_RXY1       DIVIDE LOGICAL (32<-64)
+	op_DLG     uint32 = 0xE387 // FORMAT_RXY1       DIVIDE LOGICAL (64<-128)
+	op_DLGR    uint32 = 0xB987 // FORMAT_RRE        DIVIDE LOGICAL (64<-128)
+	op_DLR     uint32 = 0xB997 // FORMAT_RRE        DIVIDE LOGICAL (32<-64)
+	op_DP      uint32 = 0xFD00 // FORMAT_SS2        DIVIDE DECIMAL
+	op_DR      uint32 = 0x1D00 // FORMAT_RR         DIVIDE (32<-64)
+	op_DSG     uint32 = 0xE30D // FORMAT_RXY1       DIVIDE SINGLE (64)
+	op_DSGF    uint32 = 0xE31D // FORMAT_RXY1       DIVIDE SINGLE (64<-32)
+	op_DSGFR   uint32 = 0xB91D // FORMAT_RRE        DIVIDE SINGLE (64<-32)
+	op_DSGR    uint32 = 0xB90D // FORMAT_RRE        DIVIDE SINGLE (64)
+	op_DXBR    uint32 = 0xB34D // FORMAT_RRE        DIVIDE (extended BFP)
+	op_DXR     uint32 = 0xB22D // FORMAT_RRE        DIVIDE (extended HFP)
+	op_DXTR    uint32 = 0xB3D9 // FORMAT_RRF1       DIVIDE (extended DFP)
+	op_DXTRA   uint32 = 0xB3D9 // FORMAT_RRF1       DIVIDE (extended DFP)
+	op_EAR     uint32 = 0xB24F // FORMAT_RRE        EXTRACT ACCESS
+	op_ECAG    uint32 = 0xEB4C // FORMAT_RSY1       EXTRACT CACHE ATTRIBUTE
+	op_ECTG    uint32 = 0xC801 // FORMAT_SSF        EXTRACT CPU TIME
+	op_ED      uint32 = 0xDE00 // FORMAT_SS1        EDIT
+	op_EDMK    uint32 = 0xDF00 // FORMAT_SS1        EDIT AND MARK
+	op_EEDTR   uint32 = 0xB3E5 // FORMAT_RRE        EXTRACT BIASED EXPONENT (long DFP to 64)
+	op_EEXTR   uint32 = 0xB3ED // FORMAT_RRE        EXTRACT BIASED EXPONENT (extended DFP to 64)
+	op_EFPC    uint32 = 0xB38C // FORMAT_RRE        EXTRACT FPC
+	op_EPAIR   uint32 = 0xB99A // FORMAT_RRE        EXTRACT PRIMARY ASN AND INSTANCE
+	op_EPAR    uint32 = 0xB226 // FORMAT_RRE        EXTRACT PRIMARY ASN
+	op_EPSW    uint32 = 0xB98D // FORMAT_RRE        EXTRACT PSW
+	op_EREG    uint32 = 0xB249 // FORMAT_RRE        EXTRACT STACKED REGISTERS (32)
+	op_EREGG   uint32 = 0xB90E // FORMAT_RRE        EXTRACT STACKED REGISTERS (64)
+	op_ESAIR   uint32 = 0xB99B // FORMAT_RRE        EXTRACT SECONDARY ASN AND INSTANCE
+	op_ESAR    uint32 = 0xB227 // FORMAT_RRE        EXTRACT SECONDARY ASN
+	op_ESDTR   uint32 = 0xB3E7 // FORMAT_RRE        EXTRACT SIGNIFICANCE (long DFP)
+	op_ESEA    uint32 = 0xB99D // FORMAT_RRE        EXTRACT AND SET EXTENDED AUTHORITY
+	op_ESTA    uint32 = 0xB24A // FORMAT_RRE        EXTRACT STACKED STATE
+	op_ESXTR   uint32 = 0xB3EF // FORMAT_RRE        EXTRACT SIGNIFICANCE (extended DFP)
+	op_ETND    uint32 = 0xB2EC // FORMAT_RRE        EXTRACT TRANSACTION NESTING DEPTH
+	op_EX      uint32 = 0x4400 // FORMAT_RX1        EXECUTE
+	op_EXRL    uint32 = 0xC600 // FORMAT_RIL2       EXECUTE RELATIVE LONG
+	op_FIDBR   uint32 = 0xB35F // FORMAT_RRF5       LOAD FP INTEGER (long BFP)
+	op_FIDBRA  uint32 = 0xB35F // FORMAT_RRF5       LOAD FP INTEGER (long BFP)
+	op_FIDR    uint32 = 0xB37F // FORMAT_RRE        LOAD FP INTEGER (long HFP)
+	op_FIDTR   uint32 = 0xB3D7 // FORMAT_RRF5       LOAD FP INTEGER (long DFP)
+	op_FIEBR   uint32 = 0xB357 // FORMAT_RRF5       LOAD FP INTEGER (short BFP)
+	op_FIEBRA  uint32 = 0xB357 // FORMAT_RRF5       LOAD FP INTEGER (short BFP)
+	op_FIER    uint32 = 0xB377 // FORMAT_RRE        LOAD FP INTEGER (short HFP)
+	op_FIXBR   uint32 = 0xB347 // FORMAT_RRF5       LOAD FP INTEGER (extended BFP)
+	op_FIXBRA  uint32 = 0xB347 // FORMAT_RRF5       LOAD FP INTEGER (extended BFP)
+	op_FIXR    uint32 = 0xB367 // FORMAT_RRE        LOAD FP INTEGER (extended HFP)
+	op_FIXTR   uint32 = 0xB3DF // FORMAT_RRF5       LOAD FP INTEGER (extended DFP)
+	op_FLOGR   uint32 = 0xB983 // FORMAT_RRE        FIND LEFTMOST ONE
+	op_HDR     uint32 = 0x2400 // FORMAT_RR         HALVE (long HFP)
+	op_HER     uint32 = 0x3400 // FORMAT_RR         HALVE (short HFP)
+	op_HSCH    uint32 = 0xB231 // FORMAT_S          HALT SUBCHANNEL
+	op_IAC     uint32 = 0xB224 // FORMAT_RRE        INSERT ADDRESS SPACE CONTROL
+	op_IC      uint32 = 0x4300 // FORMAT_RX1        INSERT CHARACTER
+	op_ICM     uint32 = 0xBF00 // FORMAT_RS2        INSERT CHARACTERS UNDER MASK (low)
+	op_ICMH    uint32 = 0xEB80 // FORMAT_RSY2       INSERT CHARACTERS UNDER MASK (high)
+	op_ICMY    uint32 = 0xEB81 // FORMAT_RSY2       INSERT CHARACTERS UNDER MASK (low)
+	op_ICY     uint32 = 0xE373 // FORMAT_RXY1       INSERT CHARACTER
+	op_IDTE    uint32 = 0xB98E // FORMAT_RRF2       INVALIDATE DAT TABLE ENTRY
+	op_IEDTR   uint32 = 0xB3F6 // FORMAT_RRF2       INSERT BIASED EXPONENT (64 to long DFP)
+	op_IEXTR   uint32 = 0xB3FE // FORMAT_RRF2       INSERT BIASED EXPONENT (64 to extended DFP)
+	op_IIHF    uint32 = 0xC008 // FORMAT_RIL1       INSERT IMMEDIATE (high)
+	op_IIHH    uint32 = 0xA500 // FORMAT_RI1        INSERT IMMEDIATE (high high)
+	op_IIHL    uint32 = 0xA501 // FORMAT_RI1        INSERT IMMEDIATE (high low)
+	op_IILF    uint32 = 0xC009 // FORMAT_RIL1       INSERT IMMEDIATE (low)
+	op_IILH    uint32 = 0xA502 // FORMAT_RI1        INSERT IMMEDIATE (low high)
+	op_IILL    uint32 = 0xA503 // FORMAT_RI1        INSERT IMMEDIATE (low low)
+	op_IPK     uint32 = 0xB20B // FORMAT_S          INSERT PSW KEY
+	op_IPM     uint32 = 0xB222 // FORMAT_RRE        INSERT PROGRAM MASK
+	op_IPTE    uint32 = 0xB221 // FORMAT_RRF1       INVALIDATE PAGE TABLE ENTRY
+	op_ISKE    uint32 = 0xB229 // FORMAT_RRE        INSERT STORAGE KEY EXTENDED
+	op_IVSK    uint32 = 0xB223 // FORMAT_RRE        INSERT VIRTUAL STORAGE KEY
+	op_KDB     uint32 = 0xED18 // FORMAT_RXE        COMPARE AND SIGNAL (long BFP)
+	op_KDBR    uint32 = 0xB318 // FORMAT_RRE        COMPARE AND SIGNAL (long BFP)
+	op_KDTR    uint32 = 0xB3E0 // FORMAT_RRE        COMPARE AND SIGNAL (long DFP)
+	op_KEB     uint32 = 0xED08 // FORMAT_RXE        COMPARE AND SIGNAL (short BFP)
+	op_KEBR    uint32 = 0xB308 // FORMAT_RRE        COMPARE AND SIGNAL (short BFP)
+	op_KIMD    uint32 = 0xB93E // FORMAT_RRE        COMPUTE INTERMEDIATE MESSAGE DIGEST
+	op_KLMD    uint32 = 0xB93F // FORMAT_RRE        COMPUTE LAST MESSAGE DIGEST
+	op_KM      uint32 = 0xB92E // FORMAT_RRE        CIPHER MESSAGE
+	op_KMAC    uint32 = 0xB91E // FORMAT_RRE        COMPUTE MESSAGE AUTHENTICATION CODE
+	op_KMC     uint32 = 0xB92F // FORMAT_RRE        CIPHER MESSAGE WITH CHAINING
+	op_KMCTR   uint32 = 0xB92D // FORMAT_RRF2       CIPHER MESSAGE WITH COUNTER
+	op_KMF     uint32 = 0xB92A // FORMAT_RRE        CIPHER MESSAGE WITH CFB
+	op_KMO     uint32 = 0xB92B // FORMAT_RRE        CIPHER MESSAGE WITH OFB
+	op_KXBR    uint32 = 0xB348 // FORMAT_RRE        COMPARE AND SIGNAL (extended BFP)
+	op_KXTR    uint32 = 0xB3E8 // FORMAT_RRE        COMPARE AND SIGNAL (extended DFP)
+	op_L       uint32 = 0x5800 // FORMAT_RX1        LOAD (32)
+	op_LA      uint32 = 0x4100 // FORMAT_RX1        LOAD ADDRESS
+	op_LAA     uint32 = 0xEBF8 // FORMAT_RSY1       LOAD AND ADD (32)
+	op_LAAG    uint32 = 0xEBE8 // FORMAT_RSY1       LOAD AND ADD (64)
+	op_LAAL    uint32 = 0xEBFA // FORMAT_RSY1       LOAD AND ADD LOGICAL (32)
+	op_LAALG   uint32 = 0xEBEA // FORMAT_RSY1       LOAD AND ADD LOGICAL (64)
+	op_LAE     uint32 = 0x5100 // FORMAT_RX1        LOAD ADDRESS EXTENDED
+	op_LAEY    uint32 = 0xE375 // FORMAT_RXY1       LOAD ADDRESS EXTENDED
+	op_LAM     uint32 = 0x9A00 // FORMAT_RS1        LOAD ACCESS MULTIPLE
+	op_LAMY    uint32 = 0xEB9A // FORMAT_RSY1       LOAD ACCESS MULTIPLE
+	op_LAN     uint32 = 0xEBF4 // FORMAT_RSY1       LOAD AND AND (32)
+	op_LANG    uint32 = 0xEBE4 // FORMAT_RSY1       LOAD AND AND (64)
+	op_LAO     uint32 = 0xEBF6 // FORMAT_RSY1       LOAD AND OR (32)
+	op_LAOG    uint32 = 0xEBE6 // FORMAT_RSY1       LOAD AND OR (64)
+	op_LARL    uint32 = 0xC000 // FORMAT_RIL2       LOAD ADDRESS RELATIVE LONG
+	op_LASP    uint32 = 0xE500 // FORMAT_SSE        LOAD ADDRESS SPACE PARAMETERS
+	op_LAT     uint32 = 0xE39F // FORMAT_RXY1       LOAD AND TRAP (32L<-32)
+	op_LAX     uint32 = 0xEBF7 // FORMAT_RSY1       LOAD AND EXCLUSIVE OR (32)
+	op_LAXG    uint32 = 0xEBE7 // FORMAT_RSY1       LOAD AND EXCLUSIVE OR (64)
+	op_LAY     uint32 = 0xE371 // FORMAT_RXY1       LOAD ADDRESS
+	op_LB      uint32 = 0xE376 // FORMAT_RXY1       LOAD BYTE (32)
+	op_LBH     uint32 = 0xE3C0 // FORMAT_RXY1       LOAD BYTE HIGH (32<-8)
+	op_LBR     uint32 = 0xB926 // FORMAT_RRE        LOAD BYTE (32)
+	op_LCDBR   uint32 = 0xB313 // FORMAT_RRE        LOAD COMPLEMENT (long BFP)
+	op_LCDFR   uint32 = 0xB373 // FORMAT_RRE        LOAD COMPLEMENT (long)
+	op_LCDR    uint32 = 0x2300 // FORMAT_RR         LOAD COMPLEMENT (long HFP)
+	op_LCEBR   uint32 = 0xB303 // FORMAT_RRE        LOAD COMPLEMENT (short BFP)
+	op_LCER    uint32 = 0x3300 // FORMAT_RR         LOAD COMPLEMENT (short HFP)
+	op_LCGFR   uint32 = 0xB913 // FORMAT_RRE        LOAD COMPLEMENT (64<-32)
+	op_LCGR    uint32 = 0xB903 // FORMAT_RRE        LOAD COMPLEMENT (64)
+	op_LCR     uint32 = 0x1300 // FORMAT_RR         LOAD COMPLEMENT (32)
+	op_LCTL    uint32 = 0xB700 // FORMAT_RS1        LOAD CONTROL (32)
+	op_LCTLG   uint32 = 0xEB2F // FORMAT_RSY1       LOAD CONTROL (64)
+	op_LCXBR   uint32 = 0xB343 // FORMAT_RRE        LOAD COMPLEMENT (extended BFP)
+	op_LCXR    uint32 = 0xB363 // FORMAT_RRE        LOAD COMPLEMENT (extended HFP)
+	op_LD      uint32 = 0x6800 // FORMAT_RX1        LOAD (long)
+	op_LDE     uint32 = 0xED24 // FORMAT_RXE        LOAD LENGTHENED (short to long HFP)
+	op_LDEB    uint32 = 0xED04 // FORMAT_RXE        LOAD LENGTHENED (short to long BFP)
+	op_LDEBR   uint32 = 0xB304 // FORMAT_RRE        LOAD LENGTHENED (short to long BFP)
+	op_LDER    uint32 = 0xB324 // FORMAT_RRE        LOAD LENGTHENED (short to long HFP)
+	op_LDETR   uint32 = 0xB3D4 // FORMAT_RRF4       LOAD LENGTHENED (short to long DFP)
+	op_LDGR    uint32 = 0xB3C1 // FORMAT_RRE        LOAD FPR FROM GR (64 to long)
+	op_LDR     uint32 = 0x2800 // FORMAT_RR         LOAD (long)
+	op_LDXBR   uint32 = 0xB345 // FORMAT_RRE        LOAD ROUNDED (extended to long BFP)
+	op_LDXBRA  uint32 = 0xB345 // FORMAT_RRF5       LOAD ROUNDED (extended to long BFP)
+	op_LDXR    uint32 = 0x2500 // FORMAT_RR         LOAD ROUNDED (extended to long HFP)
+	op_LDXTR   uint32 = 0xB3DD // FORMAT_RRF5       LOAD ROUNDED (extended to long DFP)
+	op_LDY     uint32 = 0xED65 // FORMAT_RXY1       LOAD (long)
+	op_LE      uint32 = 0x7800 // FORMAT_RX1        LOAD (short)
+	op_LEDBR   uint32 = 0xB344 // FORMAT_RRE        LOAD ROUNDED (long to short BFP)
+	op_LEDBRA  uint32 = 0xB344 // FORMAT_RRF5       LOAD ROUNDED (long to short BFP)
+	op_LEDR    uint32 = 0x3500 // FORMAT_RR         LOAD ROUNDED (long to short HFP)
+	op_LEDTR   uint32 = 0xB3D5 // FORMAT_RRF5       LOAD ROUNDED (long to short DFP)
+	op_LER     uint32 = 0x3800 // FORMAT_RR         LOAD (short)
+	op_LEXBR   uint32 = 0xB346 // FORMAT_RRE        LOAD ROUNDED (extended to short BFP)
+	op_LEXBRA  uint32 = 0xB346 // FORMAT_RRF5       LOAD ROUNDED (extended to short BFP)
+	op_LEXR    uint32 = 0xB366 // FORMAT_RRE        LOAD ROUNDED (extended to short HFP)
+	op_LEY     uint32 = 0xED64 // FORMAT_RXY1       LOAD (short)
+	op_LFAS    uint32 = 0xB2BD // FORMAT_S          LOAD FPC AND SIGNAL
+	op_LFH     uint32 = 0xE3CA // FORMAT_RXY1       LOAD HIGH (32)
+	op_LFHAT   uint32 = 0xE3C8 // FORMAT_RXY1       LOAD HIGH AND TRAP (32H<-32)
+	op_LFPC    uint32 = 0xB29D // FORMAT_S          LOAD FPC
+	op_LG      uint32 = 0xE304 // FORMAT_RXY1       LOAD (64)
+	op_LGAT    uint32 = 0xE385 // FORMAT_RXY1       LOAD AND TRAP (64)
+	op_LGB     uint32 = 0xE377 // FORMAT_RXY1       LOAD BYTE (64)
+	op_LGBR    uint32 = 0xB906 // FORMAT_RRE        LOAD BYTE (64)
+	op_LGDR    uint32 = 0xB3CD // FORMAT_RRE        LOAD GR FROM FPR (long to 64)
+	op_LGF     uint32 = 0xE314 // FORMAT_RXY1       LOAD (64<-32)
+	op_LGFI    uint32 = 0xC001 // FORMAT_RIL1       LOAD IMMEDIATE (64<-32)
+	op_LGFR    uint32 = 0xB914 // FORMAT_RRE        LOAD (64<-32)
+	op_LGFRL   uint32 = 0xC40C // FORMAT_RIL2       LOAD RELATIVE LONG (64<-32)
+	op_LGH     uint32 = 0xE315 // FORMAT_RXY1       LOAD HALFWORD (64)
+	op_LGHI    uint32 = 0xA709 // FORMAT_RI1        LOAD HALFWORD IMMEDIATE (64)
+	op_LGHR    uint32 = 0xB907 // FORMAT_RRE        LOAD HALFWORD (64)
+	op_LGHRL   uint32 = 0xC404 // FORMAT_RIL2       LOAD HALFWORD RELATIVE LONG (64<-16)
+	op_LGR     uint32 = 0xB904 // FORMAT_RRE        LOAD (64)
+	op_LGRL    uint32 = 0xC408 // FORMAT_RIL2       LOAD RELATIVE LONG (64)
+	op_LH      uint32 = 0x4800 // FORMAT_RX1        LOAD HALFWORD (32)
+	op_LHH     uint32 = 0xE3C4 // FORMAT_RXY1       LOAD HALFWORD HIGH (32<-16)
+	op_LHI     uint32 = 0xA708 // FORMAT_RI1        LOAD HALFWORD IMMEDIATE (32)
+	op_LHR     uint32 = 0xB927 // FORMAT_RRE        LOAD HALFWORD (32)
+	op_LHRL    uint32 = 0xC405 // FORMAT_RIL2       LOAD HALFWORD RELATIVE LONG (32<-16)
+	op_LHY     uint32 = 0xE378 // FORMAT_RXY1       LOAD HALFWORD (32)
+	op_LLC     uint32 = 0xE394 // FORMAT_RXY1       LOAD LOGICAL CHARACTER (32)
+	op_LLCH    uint32 = 0xE3C2 // FORMAT_RXY1       LOAD LOGICAL CHARACTER HIGH (32<-8)
+	op_LLCR    uint32 = 0xB994 // FORMAT_RRE        LOAD LOGICAL CHARACTER (32)
+	op_LLGC    uint32 = 0xE390 // FORMAT_RXY1       LOAD LOGICAL CHARACTER (64)
+	op_LLGCR   uint32 = 0xB984 // FORMAT_RRE        LOAD LOGICAL CHARACTER (64)
+	op_LLGF    uint32 = 0xE316 // FORMAT_RXY1       LOAD LOGICAL (64<-32)
+	op_LLGFAT  uint32 = 0xE39D // FORMAT_RXY1       LOAD LOGICAL AND TRAP (64<-32)
+	op_LLGFR   uint32 = 0xB916 // FORMAT_RRE        LOAD LOGICAL (64<-32)
+	op_LLGFRL  uint32 = 0xC40E // FORMAT_RIL2       LOAD LOGICAL RELATIVE LONG (64<-32)
+	op_LLGH    uint32 = 0xE391 // FORMAT_RXY1       LOAD LOGICAL HALFWORD (64)
+	op_LLGHR   uint32 = 0xB985 // FORMAT_RRE        LOAD LOGICAL HALFWORD (64)
+	op_LLGHRL  uint32 = 0xC406 // FORMAT_RIL2       LOAD LOGICAL HALFWORD RELATIVE LONG (64<-16)
+	op_LLGT    uint32 = 0xE317 // FORMAT_RXY1       LOAD LOGICAL THIRTY ONE BITS
+	op_LLGTAT  uint32 = 0xE39C // FORMAT_RXY1       LOAD LOGICAL THIRTY ONE BITS AND TRAP (64<-31)
+	op_LLGTR   uint32 = 0xB917 // FORMAT_RRE        LOAD LOGICAL THIRTY ONE BITS
+	op_LLH     uint32 = 0xE395 // FORMAT_RXY1       LOAD LOGICAL HALFWORD (32)
+	op_LLHH    uint32 = 0xE3C6 // FORMAT_RXY1       LOAD LOGICAL HALFWORD HIGH (32<-16)
+	op_LLHR    uint32 = 0xB995 // FORMAT_RRE        LOAD LOGICAL HALFWORD (32)
+	op_LLHRL   uint32 = 0xC402 // FORMAT_RIL2       LOAD LOGICAL HALFWORD RELATIVE LONG (32<-16)
+	op_LLIHF   uint32 = 0xC00E // FORMAT_RIL1       LOAD LOGICAL IMMEDIATE (high)
+	op_LLIHH   uint32 = 0xA50C // FORMAT_RI1        LOAD LOGICAL IMMEDIATE (high high)
+	op_LLIHL   uint32 = 0xA50D // FORMAT_RI1        LOAD LOGICAL IMMEDIATE (high low)
+	op_LLILF   uint32 = 0xC00F // FORMAT_RIL1       LOAD LOGICAL IMMEDIATE (low)
+	op_LLILH   uint32 = 0xA50E // FORMAT_RI1        LOAD LOGICAL IMMEDIATE (low high)
+	op_LLILL   uint32 = 0xA50F // FORMAT_RI1        LOAD LOGICAL IMMEDIATE (low low)
+	op_LM      uint32 = 0x9800 // FORMAT_RS1        LOAD MULTIPLE (32)
+	op_LMD     uint32 = 0xEF00 // FORMAT_SS5        LOAD MULTIPLE DISJOINT
+	op_LMG     uint32 = 0xEB04 // FORMAT_RSY1       LOAD MULTIPLE (64)
+	op_LMH     uint32 = 0xEB96 // FORMAT_RSY1       LOAD MULTIPLE HIGH
+	op_LMY     uint32 = 0xEB98 // FORMAT_RSY1       LOAD MULTIPLE (32)
+	op_LNDBR   uint32 = 0xB311 // FORMAT_RRE        LOAD NEGATIVE (long BFP)
+	op_LNDFR   uint32 = 0xB371 // FORMAT_RRE        LOAD NEGATIVE (long)
+	op_LNDR    uint32 = 0x2100 // FORMAT_RR         LOAD NEGATIVE (long HFP)
+	op_LNEBR   uint32 = 0xB301 // FORMAT_RRE        LOAD NEGATIVE (short BFP)
+	op_LNER    uint32 = 0x3100 // FORMAT_RR         LOAD NEGATIVE (short HFP)
+	op_LNGFR   uint32 = 0xB911 // FORMAT_RRE        LOAD NEGATIVE (64<-32)
+	op_LNGR    uint32 = 0xB901 // FORMAT_RRE        LOAD NEGATIVE (64)
+	op_LNR     uint32 = 0x1100 // FORMAT_RR         LOAD NEGATIVE (32)
+	op_LNXBR   uint32 = 0xB341 // FORMAT_RRE        LOAD NEGATIVE (extended BFP)
+	op_LNXR    uint32 = 0xB361 // FORMAT_RRE        LOAD NEGATIVE (extended HFP)
+	op_LOC     uint32 = 0xEBF2 // FORMAT_RSY2       LOAD ON CONDITION (32)
+	op_LOCG    uint32 = 0xEBE2 // FORMAT_RSY2       LOAD ON CONDITION (64)
+	op_LOCGR   uint32 = 0xB9E2 // FORMAT_RRF3       LOAD ON CONDITION (64)
+	op_LOCR    uint32 = 0xB9F2 // FORMAT_RRF3       LOAD ON CONDITION (32)
+	op_LPD     uint32 = 0xC804 // FORMAT_SSF        LOAD PAIR DISJOINT (32)
+	op_LPDBR   uint32 = 0xB310 // FORMAT_RRE        LOAD POSITIVE (long BFP)
+	op_LPDFR   uint32 = 0xB370 // FORMAT_RRE        LOAD POSITIVE (long)
+	op_LPDG    uint32 = 0xC805 // FORMAT_SSF        LOAD PAIR DISJOINT (64)
+	op_LPDR    uint32 = 0x2000 // FORMAT_RR         LOAD POSITIVE (long HFP)
+	op_LPEBR   uint32 = 0xB300 // FORMAT_RRE        LOAD POSITIVE (short BFP)
+	op_LPER    uint32 = 0x3000 // FORMAT_RR         LOAD POSITIVE (short HFP)
+	op_LPGFR   uint32 = 0xB910 // FORMAT_RRE        LOAD POSITIVE (64<-32)
+	op_LPGR    uint32 = 0xB900 // FORMAT_RRE        LOAD POSITIVE (64)
+	op_LPQ     uint32 = 0xE38F // FORMAT_RXY1       LOAD PAIR FROM QUADWORD
+	op_LPR     uint32 = 0x1000 // FORMAT_RR         LOAD POSITIVE (32)
+	op_LPSW    uint32 = 0x8200 // FORMAT_S          LOAD PSW
+	op_LPSWE   uint32 = 0xB2B2 // FORMAT_S          LOAD PSW EXTENDED
+	op_LPTEA   uint32 = 0xB9AA // FORMAT_RRF2       LOAD PAGE TABLE ENTRY ADDRESS
+	op_LPXBR   uint32 = 0xB340 // FORMAT_RRE        LOAD POSITIVE (extended BFP)
+	op_LPXR    uint32 = 0xB360 // FORMAT_RRE        LOAD POSITIVE (extended HFP)
+	op_LR      uint32 = 0x1800 // FORMAT_RR         LOAD (32)
+	op_LRA     uint32 = 0xB100 // FORMAT_RX1        LOAD REAL ADDRESS (32)
+	op_LRAG    uint32 = 0xE303 // FORMAT_RXY1       LOAD REAL ADDRESS (64)
+	op_LRAY    uint32 = 0xE313 // FORMAT_RXY1       LOAD REAL ADDRESS (32)
+	op_LRDR    uint32 = 0x2500 // FORMAT_RR         LOAD ROUNDED (extended to long HFP)
+	op_LRER    uint32 = 0x3500 // FORMAT_RR         LOAD ROUNDED (long to short HFP)
+	op_LRL     uint32 = 0xC40D // FORMAT_RIL2       LOAD RELATIVE LONG (32)
+	op_LRV     uint32 = 0xE31E // FORMAT_RXY1       LOAD REVERSED (32)
+	op_LRVG    uint32 = 0xE30F // FORMAT_RXY1       LOAD REVERSED (64)
+	op_LRVGR   uint32 = 0xB90F // FORMAT_RRE        LOAD REVERSED (64)
+	op_LRVH    uint32 = 0xE31F // FORMAT_RXY1       LOAD REVERSED (16)
+	op_LRVR    uint32 = 0xB91F // FORMAT_RRE        LOAD REVERSED (32)
+	op_LT      uint32 = 0xE312 // FORMAT_RXY1       LOAD AND TEST (32)
+	op_LTDBR   uint32 = 0xB312 // FORMAT_RRE        LOAD AND TEST (long BFP)
+	op_LTDR    uint32 = 0x2200 // FORMAT_RR         LOAD AND TEST (long HFP)
+	op_LTDTR   uint32 = 0xB3D6 // FORMAT_RRE        LOAD AND TEST (long DFP)
+	op_LTEBR   uint32 = 0xB302 // FORMAT_RRE        LOAD AND TEST (short BFP)
+	op_LTER    uint32 = 0x3200 // FORMAT_RR         LOAD AND TEST (short HFP)
+	op_LTG     uint32 = 0xE302 // FORMAT_RXY1       LOAD AND TEST (64)
+	op_LTGF    uint32 = 0xE332 // FORMAT_RXY1       LOAD AND TEST (64<-32)
+	op_LTGFR   uint32 = 0xB912 // FORMAT_RRE        LOAD AND TEST (64<-32)
+	op_LTGR    uint32 = 0xB902 // FORMAT_RRE        LOAD AND TEST (64)
+	op_LTR     uint32 = 0x1200 // FORMAT_RR         LOAD AND TEST (32)
+	op_LTXBR   uint32 = 0xB342 // FORMAT_RRE        LOAD AND TEST (extended BFP)
+	op_LTXR    uint32 = 0xB362 // FORMAT_RRE        LOAD AND TEST (extended HFP)
+	op_LTXTR   uint32 = 0xB3DE // FORMAT_RRE        LOAD AND TEST (extended DFP)
+	op_LURA    uint32 = 0xB24B // FORMAT_RRE        LOAD USING REAL ADDRESS (32)
+	op_LURAG   uint32 = 0xB905 // FORMAT_RRE        LOAD USING REAL ADDRESS (64)
+	op_LXD     uint32 = 0xED25 // FORMAT_RXE        LOAD LENGTHENED (long to extended HFP)
+	op_LXDB    uint32 = 0xED05 // FORMAT_RXE        LOAD LENGTHENED (long to extended BFP)
+	op_LXDBR   uint32 = 0xB305 // FORMAT_RRE        LOAD LENGTHENED (long to extended BFP)
+	op_LXDR    uint32 = 0xB325 // FORMAT_RRE        LOAD LENGTHENED (long to extended HFP)
+	op_LXDTR   uint32 = 0xB3DC // FORMAT_RRF4       LOAD LENGTHENED (long to extended DFP)
+	op_LXE     uint32 = 0xED26 // FORMAT_RXE        LOAD LENGTHENED (short to extended HFP)
+	op_LXEB    uint32 = 0xED06 // FORMAT_RXE        LOAD LENGTHENED (short to extended BFP)
+	op_LXEBR   uint32 = 0xB306 // FORMAT_RRE        LOAD LENGTHENED (short to extended BFP)
+	op_LXER    uint32 = 0xB326 // FORMAT_RRE        LOAD LENGTHENED (short to extended HFP)
+	op_LXR     uint32 = 0xB365 // FORMAT_RRE        LOAD (extended)
+	op_LY      uint32 = 0xE358 // FORMAT_RXY1       LOAD (32)
+	op_LZDR    uint32 = 0xB375 // FORMAT_RRE        LOAD ZERO (long)
+	op_LZER    uint32 = 0xB374 // FORMAT_RRE        LOAD ZERO (short)
+	op_LZXR    uint32 = 0xB376 // FORMAT_RRE        LOAD ZERO (extended)
+	op_M       uint32 = 0x5C00 // FORMAT_RX1        MULTIPLY (64<-32)
+	op_MAD     uint32 = 0xED3E // FORMAT_RXF        MULTIPLY AND ADD (long HFP)
+	op_MADB    uint32 = 0xED1E // FORMAT_RXF        MULTIPLY AND ADD (long BFP)
+	op_MADBR   uint32 = 0xB31E // FORMAT_RRD        MULTIPLY AND ADD (long BFP)
+	op_MADR    uint32 = 0xB33E // FORMAT_RRD        MULTIPLY AND ADD (long HFP)
+	op_MAE     uint32 = 0xED2E // FORMAT_RXF        MULTIPLY AND ADD (short HFP)
+	op_MAEB    uint32 = 0xED0E // FORMAT_RXF        MULTIPLY AND ADD (short BFP)
+	op_MAEBR   uint32 = 0xB30E // FORMAT_RRD        MULTIPLY AND ADD (short BFP)
+	op_MAER    uint32 = 0xB32E // FORMAT_RRD        MULTIPLY AND ADD (short HFP)
+	op_MAY     uint32 = 0xED3A // FORMAT_RXF        MULTIPLY & ADD UNNORMALIZED (long to ext. HFP)
+	op_MAYH    uint32 = 0xED3C // FORMAT_RXF        MULTIPLY AND ADD UNNRM. (long to ext. high HFP)
+	op_MAYHR   uint32 = 0xB33C // FORMAT_RRD        MULTIPLY AND ADD UNNRM. (long to ext. high HFP)
+	op_MAYL    uint32 = 0xED38 // FORMAT_RXF        MULTIPLY AND ADD UNNRM. (long to ext. low HFP)
+	op_MAYLR   uint32 = 0xB338 // FORMAT_RRD        MULTIPLY AND ADD UNNRM. (long to ext. low HFP)
+	op_MAYR    uint32 = 0xB33A // FORMAT_RRD        MULTIPLY & ADD UNNORMALIZED (long to ext. HFP)
+	op_MC      uint32 = 0xAF00 // FORMAT_SI         MONITOR CALL
+	op_MD      uint32 = 0x6C00 // FORMAT_RX1        MULTIPLY (long HFP)
+	op_MDB     uint32 = 0xED1C // FORMAT_RXE        MULTIPLY (long BFP)
+	op_MDBR    uint32 = 0xB31C // FORMAT_RRE        MULTIPLY (long BFP)
+	op_MDE     uint32 = 0x7C00 // FORMAT_RX1        MULTIPLY (short to long HFP)
+	op_MDEB    uint32 = 0xED0C // FORMAT_RXE        MULTIPLY (short to long BFP)
+	op_MDEBR   uint32 = 0xB30C // FORMAT_RRE        MULTIPLY (short to long BFP)
+	op_MDER    uint32 = 0x3C00 // FORMAT_RR         MULTIPLY (short to long HFP)
+	op_MDR     uint32 = 0x2C00 // FORMAT_RR         MULTIPLY (long HFP)
+	op_MDTR    uint32 = 0xB3D0 // FORMAT_RRF1       MULTIPLY (long DFP)
+	op_MDTRA   uint32 = 0xB3D0 // FORMAT_RRF1       MULTIPLY (long DFP)
+	op_ME      uint32 = 0x7C00 // FORMAT_RX1        MULTIPLY (short to long HFP)
+	op_MEE     uint32 = 0xED37 // FORMAT_RXE        MULTIPLY (short HFP)
+	op_MEEB    uint32 = 0xED17 // FORMAT_RXE        MULTIPLY (short BFP)
+	op_MEEBR   uint32 = 0xB317 // FORMAT_RRE        MULTIPLY (short BFP)
+	op_MEER    uint32 = 0xB337 // FORMAT_RRE        MULTIPLY (short HFP)
+	op_MER     uint32 = 0x3C00 // FORMAT_RR         MULTIPLY (short to long HFP)
+	op_MFY     uint32 = 0xE35C // FORMAT_RXY1       MULTIPLY (64<-32)
+	op_MGHI    uint32 = 0xA70D // FORMAT_RI1        MULTIPLY HALFWORD IMMEDIATE (64)
+	op_MH      uint32 = 0x4C00 // FORMAT_RX1        MULTIPLY HALFWORD (32)
+	op_MHI     uint32 = 0xA70C // FORMAT_RI1        MULTIPLY HALFWORD IMMEDIATE (32)
+	op_MHY     uint32 = 0xE37C // FORMAT_RXY1       MULTIPLY HALFWORD (32)
+	op_ML      uint32 = 0xE396 // FORMAT_RXY1       MULTIPLY LOGICAL (64<-32)
+	op_MLG     uint32 = 0xE386 // FORMAT_RXY1       MULTIPLY LOGICAL (128<-64)
+	op_MLGR    uint32 = 0xB986 // FORMAT_RRE        MULTIPLY LOGICAL (128<-64)
+	op_MLR     uint32 = 0xB996 // FORMAT_RRE        MULTIPLY LOGICAL (64<-32)
+	op_MP      uint32 = 0xFC00 // FORMAT_SS2        MULTIPLY DECIMAL
+	op_MR      uint32 = 0x1C00 // FORMAT_RR         MULTIPLY (64<-32)
+	op_MS      uint32 = 0x7100 // FORMAT_RX1        MULTIPLY SINGLE (32)
+	op_MSCH    uint32 = 0xB232 // FORMAT_S          MODIFY SUBCHANNEL
+	op_MSD     uint32 = 0xED3F // FORMAT_RXF        MULTIPLY AND SUBTRACT (long HFP)
+	op_MSDB    uint32 = 0xED1F // FORMAT_RXF        MULTIPLY AND SUBTRACT (long BFP)
+	op_MSDBR   uint32 = 0xB31F // FORMAT_RRD        MULTIPLY AND SUBTRACT (long BFP)
+	op_MSDR    uint32 = 0xB33F // FORMAT_RRD        MULTIPLY AND SUBTRACT (long HFP)
+	op_MSE     uint32 = 0xED2F // FORMAT_RXF        MULTIPLY AND SUBTRACT (short HFP)
+	op_MSEB    uint32 = 0xED0F // FORMAT_RXF        MULTIPLY AND SUBTRACT (short BFP)
+	op_MSEBR   uint32 = 0xB30F // FORMAT_RRD        MULTIPLY AND SUBTRACT (short BFP)
+	op_MSER    uint32 = 0xB32F // FORMAT_RRD        MULTIPLY AND SUBTRACT (short HFP)
+	op_MSFI    uint32 = 0xC201 // FORMAT_RIL1       MULTIPLY SINGLE IMMEDIATE (32)
+	op_MSG     uint32 = 0xE30C // FORMAT_RXY1       MULTIPLY SINGLE (64)
+	op_MSGF    uint32 = 0xE31C // FORMAT_RXY1       MULTIPLY SINGLE (64<-32)
+	op_MSGFI   uint32 = 0xC200 // FORMAT_RIL1       MULTIPLY SINGLE IMMEDIATE (64<-32)
+	op_MSGFR   uint32 = 0xB91C // FORMAT_RRE        MULTIPLY SINGLE (64<-32)
+	op_MSGR    uint32 = 0xB90C // FORMAT_RRE        MULTIPLY SINGLE (64)
+	op_MSR     uint32 = 0xB252 // FORMAT_RRE        MULTIPLY SINGLE (32)
+	op_MSTA    uint32 = 0xB247 // FORMAT_RRE        MODIFY STACKED STATE
+	op_MSY     uint32 = 0xE351 // FORMAT_RXY1       MULTIPLY SINGLE (32)
+	op_MVC     uint32 = 0xD200 // FORMAT_SS1        MOVE (character)
+	op_MVCDK   uint32 = 0xE50F // FORMAT_SSE        MOVE WITH DESTINATION KEY
+	op_MVCIN   uint32 = 0xE800 // FORMAT_SS1        MOVE INVERSE
+	op_MVCK    uint32 = 0xD900 // FORMAT_SS4        MOVE WITH KEY
+	op_MVCL    uint32 = 0x0E00 // FORMAT_RR         MOVE LONG
+	op_MVCLE   uint32 = 0xA800 // FORMAT_RS1        MOVE LONG EXTENDED
+	op_MVCLU   uint32 = 0xEB8E // FORMAT_RSY1       MOVE LONG UNICODE
+	op_MVCOS   uint32 = 0xC800 // FORMAT_SSF        MOVE WITH OPTIONAL SPECIFICATIONS
+	op_MVCP    uint32 = 0xDA00 // FORMAT_SS4        MOVE TO PRIMARY
+	op_MVCS    uint32 = 0xDB00 // FORMAT_SS4        MOVE TO SECONDARY
+	op_MVCSK   uint32 = 0xE50E // FORMAT_SSE        MOVE WITH SOURCE KEY
+	op_MVGHI   uint32 = 0xE548 // FORMAT_SIL        MOVE (64<-16)
+	op_MVHHI   uint32 = 0xE544 // FORMAT_SIL        MOVE (16<-16)
+	op_MVHI    uint32 = 0xE54C // FORMAT_SIL        MOVE (32<-16)
+	op_MVI     uint32 = 0x9200 // FORMAT_SI         MOVE (immediate)
+	op_MVIY    uint32 = 0xEB52 // FORMAT_SIY        MOVE (immediate)
+	op_MVN     uint32 = 0xD100 // FORMAT_SS1        MOVE NUMERICS
+	op_MVO     uint32 = 0xF100 // FORMAT_SS2        MOVE WITH OFFSET
+	op_MVPG    uint32 = 0xB254 // FORMAT_RRE        MOVE PAGE
+	op_MVST    uint32 = 0xB255 // FORMAT_RRE        MOVE STRING
+	op_MVZ     uint32 = 0xD300 // FORMAT_SS1        MOVE ZONES
+	op_MXBR    uint32 = 0xB34C // FORMAT_RRE        MULTIPLY (extended BFP)
+	op_MXD     uint32 = 0x6700 // FORMAT_RX1        MULTIPLY (long to extended HFP)
+	op_MXDB    uint32 = 0xED07 // FORMAT_RXE        MULTIPLY (long to extended BFP)
+	op_MXDBR   uint32 = 0xB307 // FORMAT_RRE        MULTIPLY (long to extended BFP)
+	op_MXDR    uint32 = 0x2700 // FORMAT_RR         MULTIPLY (long to extended HFP)
+	op_MXR     uint32 = 0x2600 // FORMAT_RR         MULTIPLY (extended HFP)
+	op_MXTR    uint32 = 0xB3D8 // FORMAT_RRF1       MULTIPLY (extended DFP)
+	op_MXTRA   uint32 = 0xB3D8 // FORMAT_RRF1       MULTIPLY (extended DFP)
+	op_MY      uint32 = 0xED3B // FORMAT_RXF        MULTIPLY UNNORMALIZED (long to ext. HFP)
+	op_MYH     uint32 = 0xED3D // FORMAT_RXF        MULTIPLY UNNORM. (long to ext. high HFP)
+	op_MYHR    uint32 = 0xB33D // FORMAT_RRD        MULTIPLY UNNORM. (long to ext. high HFP)
+	op_MYL     uint32 = 0xED39 // FORMAT_RXF        MULTIPLY UNNORM. (long to ext. low HFP)
+	op_MYLR    uint32 = 0xB339 // FORMAT_RRD        MULTIPLY UNNORM. (long to ext. low HFP)
+	op_MYR     uint32 = 0xB33B // FORMAT_RRD        MULTIPLY UNNORMALIZED (long to ext. HFP)
+	op_N       uint32 = 0x5400 // FORMAT_RX1        AND (32)
+	op_NC      uint32 = 0xD400 // FORMAT_SS1        AND (character)
+	op_NG      uint32 = 0xE380 // FORMAT_RXY1       AND (64)
+	op_NGR     uint32 = 0xB980 // FORMAT_RRE        AND (64)
+	op_NGRK    uint32 = 0xB9E4 // FORMAT_RRF1       AND (64)
+	op_NI      uint32 = 0x9400 // FORMAT_SI         AND (immediate)
+	op_NIAI    uint32 = 0xB2FA // FORMAT_IE         NEXT INSTRUCTION ACCESS INTENT
+	op_NIHF    uint32 = 0xC00A // FORMAT_RIL1       AND IMMEDIATE (high)
+	op_NIHH    uint32 = 0xA504 // FORMAT_RI1        AND IMMEDIATE (high high)
+	op_NIHL    uint32 = 0xA505 // FORMAT_RI1        AND IMMEDIATE (high low)
+	op_NILF    uint32 = 0xC00B // FORMAT_RIL1       AND IMMEDIATE (low)
+	op_NILH    uint32 = 0xA506 // FORMAT_RI1        AND IMMEDIATE (low high)
+	op_NILL    uint32 = 0xA507 // FORMAT_RI1        AND IMMEDIATE (low low)
+	op_NIY     uint32 = 0xEB54 // FORMAT_SIY        AND (immediate)
+	op_NR      uint32 = 0x1400 // FORMAT_RR         AND (32)
+	op_NRK     uint32 = 0xB9F4 // FORMAT_RRF1       AND (32)
+	op_NTSTG   uint32 = 0xE325 // FORMAT_RXY1       NONTRANSACTIONAL STORE
+	op_NY      uint32 = 0xE354 // FORMAT_RXY1       AND (32)
+	op_O       uint32 = 0x5600 // FORMAT_RX1        OR (32)
+	op_OC      uint32 = 0xD600 // FORMAT_SS1        OR (character)
+	op_OG      uint32 = 0xE381 // FORMAT_RXY1       OR (64)
+	op_OGR     uint32 = 0xB981 // FORMAT_RRE        OR (64)
+	op_OGRK    uint32 = 0xB9E6 // FORMAT_RRF1       OR (64)
+	op_OI      uint32 = 0x9600 // FORMAT_SI         OR (immediate)
+	op_OIHF    uint32 = 0xC00C // FORMAT_RIL1       OR IMMEDIATE (high)
+	op_OIHH    uint32 = 0xA508 // FORMAT_RI1        OR IMMEDIATE (high high)
+	op_OIHL    uint32 = 0xA509 // FORMAT_RI1        OR IMMEDIATE (high low)
+	op_OILF    uint32 = 0xC00D // FORMAT_RIL1       OR IMMEDIATE (low)
+	op_OILH    uint32 = 0xA50A // FORMAT_RI1        OR IMMEDIATE (low high)
+	op_OILL    uint32 = 0xA50B // FORMAT_RI1        OR IMMEDIATE (low low)
+	op_OIY     uint32 = 0xEB56 // FORMAT_SIY        OR (immediate)
+	op_OR      uint32 = 0x1600 // FORMAT_RR         OR (32)
+	op_ORK     uint32 = 0xB9F6 // FORMAT_RRF1       OR (32)
+	op_OY      uint32 = 0xE356 // FORMAT_RXY1       OR (32)
+	op_PACK    uint32 = 0xF200 // FORMAT_SS2        PACK
+	op_PALB    uint32 = 0xB248 // FORMAT_RRE        PURGE ALB
+	op_PC      uint32 = 0xB218 // FORMAT_S          PROGRAM CALL
+	op_PCC     uint32 = 0xB92C // FORMAT_RRE        PERFORM CRYPTOGRAPHIC COMPUTATION
+	op_PCKMO   uint32 = 0xB928 // FORMAT_RRE        PERFORM CRYPTOGRAPHIC KEY MGMT. OPERATIONS
+	op_PFD     uint32 = 0xE336 // FORMAT_RXY2       PREFETCH DATA
+	op_PFDRL   uint32 = 0xC602 // FORMAT_RIL3       PREFETCH DATA RELATIVE LONG
+	op_PFMF    uint32 = 0xB9AF // FORMAT_RRE        PERFORM FRAME MANAGEMENT FUNCTION
+	op_PFPO    uint32 = 0x010A // FORMAT_E          PERFORM FLOATING-POINT OPERATION
+	op_PGIN    uint32 = 0xB22E // FORMAT_RRE        PAGE IN
+	op_PGOUT   uint32 = 0xB22F // FORMAT_RRE        PAGE OUT
+	op_PKA     uint32 = 0xE900 // FORMAT_SS6        PACK ASCII
+	op_PKU     uint32 = 0xE100 // FORMAT_SS6        PACK UNICODE
+	op_PLO     uint32 = 0xEE00 // FORMAT_SS5        PERFORM LOCKED OPERATION
+	op_POPCNT  uint32 = 0xB9E1 // FORMAT_RRE        POPULATION COUNT
+	op_PPA     uint32 = 0xB2E8 // FORMAT_RRF3       PERFORM PROCESSOR ASSIST
+	op_PR      uint32 = 0x0101 // FORMAT_E          PROGRAM RETURN
+	op_PT      uint32 = 0xB228 // FORMAT_RRE        PROGRAM TRANSFER
+	op_PTF     uint32 = 0xB9A2 // FORMAT_RRE        PERFORM TOPOLOGY FUNCTION
+	op_PTFF    uint32 = 0x0104 // FORMAT_E          PERFORM TIMING FACILITY FUNCTION
+	op_PTI     uint32 = 0xB99E // FORMAT_RRE        PROGRAM TRANSFER WITH INSTANCE
+	op_PTLB    uint32 = 0xB20D // FORMAT_S          PURGE TLB
+	op_QADTR   uint32 = 0xB3F5 // FORMAT_RRF2       QUANTIZE (long DFP)
+	op_QAXTR   uint32 = 0xB3FD // FORMAT_RRF2       QUANTIZE (extended DFP)
+	op_RCHP    uint32 = 0xB23B // FORMAT_S          RESET CHANNEL PATH
+	op_RISBG   uint32 = 0xEC55 // FORMAT_RIE6       ROTATE THEN INSERT SELECTED BITS
+	op_RISBGN  uint32 = 0xEC59 // FORMAT_RIE6       ROTATE THEN INSERT SELECTED BITS
+	op_RISBHG  uint32 = 0xEC5D // FORMAT_RIE6       ROTATE THEN INSERT SELECTED BITS HIGH
+	op_RISBLG  uint32 = 0xEC51 // FORMAT_RIE6       ROTATE THEN INSERT SELECTED BITS LOW
+	op_RLL     uint32 = 0xEB1D // FORMAT_RSY1       ROTATE LEFT SINGLE LOGICAL (32)
+	op_RLLG    uint32 = 0xEB1C // FORMAT_RSY1       ROTATE LEFT SINGLE LOGICAL (64)
+	op_RNSBG   uint32 = 0xEC54 // FORMAT_RIE6       ROTATE THEN AND SELECTED BITS
+	op_ROSBG   uint32 = 0xEC56 // FORMAT_RIE6       ROTATE THEN OR SELECTED BITS
+	op_RP      uint32 = 0xB277 // FORMAT_S          RESUME PROGRAM
+	op_RRBE    uint32 = 0xB22A // FORMAT_RRE        RESET REFERENCE BIT EXTENDED
+	op_RRBM    uint32 = 0xB9AE // FORMAT_RRE        RESET REFERENCE BITS MULTIPLE
+	op_RRDTR   uint32 = 0xB3F7 // FORMAT_RRF2       REROUND (long DFP)
+	op_RRXTR   uint32 = 0xB3FF // FORMAT_RRF2       REROUND (extended DFP)
+	op_RSCH    uint32 = 0xB238 // FORMAT_S          RESUME SUBCHANNEL
+	op_RXSBG   uint32 = 0xEC57 // FORMAT_RIE6       ROTATE THEN EXCLUSIVE OR SELECTED BITS
+	op_S       uint32 = 0x5B00 // FORMAT_RX1        SUBTRACT (32)
+	op_SAC     uint32 = 0xB219 // FORMAT_S          SET ADDRESS SPACE CONTROL
+	op_SACF    uint32 = 0xB279 // FORMAT_S          SET ADDRESS SPACE CONTROL FAST
+	op_SAL     uint32 = 0xB237 // FORMAT_S          SET ADDRESS LIMIT
+	op_SAM24   uint32 = 0x010C // FORMAT_E          SET ADDRESSING MODE (24)
+	op_SAM31   uint32 = 0x010D // FORMAT_E          SET ADDRESSING MODE (31)
+	op_SAM64   uint32 = 0x010E // FORMAT_E          SET ADDRESSING MODE (64)
+	op_SAR     uint32 = 0xB24E // FORMAT_RRE        SET ACCESS
+	op_SCHM    uint32 = 0xB23C // FORMAT_S          SET CHANNEL MONITOR
+	op_SCK     uint32 = 0xB204 // FORMAT_S          SET CLOCK
+	op_SCKC    uint32 = 0xB206 // FORMAT_S          SET CLOCK COMPARATOR
+	op_SCKPF   uint32 = 0x0107 // FORMAT_E          SET CLOCK PROGRAMMABLE FIELD
+	op_SD      uint32 = 0x6B00 // FORMAT_RX1        SUBTRACT NORMALIZED (long HFP)
+	op_SDB     uint32 = 0xED1B // FORMAT_RXE        SUBTRACT (long BFP)
+	op_SDBR    uint32 = 0xB31B // FORMAT_RRE        SUBTRACT (long BFP)
+	op_SDR     uint32 = 0x2B00 // FORMAT_RR         SUBTRACT NORMALIZED (long HFP)
+	op_SDTR    uint32 = 0xB3D3 // FORMAT_RRF1       SUBTRACT (long DFP)
+	op_SDTRA   uint32 = 0xB3D3 // FORMAT_RRF1       SUBTRACT (long DFP)
+	op_SE      uint32 = 0x7B00 // FORMAT_RX1        SUBTRACT NORMALIZED (short HFP)
+	op_SEB     uint32 = 0xED0B // FORMAT_RXE        SUBTRACT (short BFP)
+	op_SEBR    uint32 = 0xB30B // FORMAT_RRE        SUBTRACT (short BFP)
+	op_SER     uint32 = 0x3B00 // FORMAT_RR         SUBTRACT NORMALIZED (short HFP)
+	op_SFASR   uint32 = 0xB385 // FORMAT_RRE        SET FPC AND SIGNAL
+	op_SFPC    uint32 = 0xB384 // FORMAT_RRE        SET FPC
+	op_SG      uint32 = 0xE309 // FORMAT_RXY1       SUBTRACT (64)
+	op_SGF     uint32 = 0xE319 // FORMAT_RXY1       SUBTRACT (64<-32)
+	op_SGFR    uint32 = 0xB919 // FORMAT_RRE        SUBTRACT (64<-32)
+	op_SGR     uint32 = 0xB909 // FORMAT_RRE        SUBTRACT (64)
+	op_SGRK    uint32 = 0xB9E9 // FORMAT_RRF1       SUBTRACT (64)
+	op_SH      uint32 = 0x4B00 // FORMAT_RX1        SUBTRACT HALFWORD
+	op_SHHHR   uint32 = 0xB9C9 // FORMAT_RRF1       SUBTRACT HIGH (32)
+	op_SHHLR   uint32 = 0xB9D9 // FORMAT_RRF1       SUBTRACT HIGH (32)
+	op_SHY     uint32 = 0xE37B // FORMAT_RXY1       SUBTRACT HALFWORD
+	op_SIGP    uint32 = 0xAE00 // FORMAT_RS1        SIGNAL PROCESSOR
+	op_SL      uint32 = 0x5F00 // FORMAT_RX1        SUBTRACT LOGICAL (32)
+	op_SLA     uint32 = 0x8B00 // FORMAT_RS1        SHIFT LEFT SINGLE (32)
+	op_SLAG    uint32 = 0xEB0B // FORMAT_RSY1       SHIFT LEFT SINGLE (64)
+	op_SLAK    uint32 = 0xEBDD // FORMAT_RSY1       SHIFT LEFT SINGLE (32)
+	op_SLB     uint32 = 0xE399 // FORMAT_RXY1       SUBTRACT LOGICAL WITH BORROW (32)
+	op_SLBG    uint32 = 0xE389 // FORMAT_RXY1       SUBTRACT LOGICAL WITH BORROW (64)
+	op_SLBGR   uint32 = 0xB989 // FORMAT_RRE        SUBTRACT LOGICAL WITH BORROW (64)
+	op_SLBR    uint32 = 0xB999 // FORMAT_RRE        SUBTRACT LOGICAL WITH BORROW (32)
+	op_SLDA    uint32 = 0x8F00 // FORMAT_RS1        SHIFT LEFT DOUBLE
+	op_SLDL    uint32 = 0x8D00 // FORMAT_RS1        SHIFT LEFT DOUBLE LOGICAL
+	op_SLDT    uint32 = 0xED40 // FORMAT_RXF        SHIFT SIGNIFICAND LEFT (long DFP)
+	op_SLFI    uint32 = 0xC205 // FORMAT_RIL1       SUBTRACT LOGICAL IMMEDIATE (32)
+	op_SLG     uint32 = 0xE30B // FORMAT_RXY1       SUBTRACT LOGICAL (64)
+	op_SLGF    uint32 = 0xE31B // FORMAT_RXY1       SUBTRACT LOGICAL (64<-32)
+	op_SLGFI   uint32 = 0xC204 // FORMAT_RIL1       SUBTRACT LOGICAL IMMEDIATE (64<-32)
+	op_SLGFR   uint32 = 0xB91B // FORMAT_RRE        SUBTRACT LOGICAL (64<-32)
+	op_SLGR    uint32 = 0xB90B // FORMAT_RRE        SUBTRACT LOGICAL (64)
+	op_SLGRK   uint32 = 0xB9EB // FORMAT_RRF1       SUBTRACT LOGICAL (64)
+	op_SLHHHR  uint32 = 0xB9CB // FORMAT_RRF1       SUBTRACT LOGICAL HIGH (32)
+	op_SLHHLR  uint32 = 0xB9DB // FORMAT_RRF1       SUBTRACT LOGICAL HIGH (32)
+	op_SLL     uint32 = 0x8900 // FORMAT_RS1        SHIFT LEFT SINGLE LOGICAL (32)
+	op_SLLG    uint32 = 0xEB0D // FORMAT_RSY1       SHIFT LEFT SINGLE LOGICAL (64)
+	op_SLLK    uint32 = 0xEBDF // FORMAT_RSY1       SHIFT LEFT SINGLE LOGICAL (32)
+	op_SLR     uint32 = 0x1F00 // FORMAT_RR         SUBTRACT LOGICAL (32)
+	op_SLRK    uint32 = 0xB9FB // FORMAT_RRF1       SUBTRACT LOGICAL (32)
+	op_SLXT    uint32 = 0xED48 // FORMAT_RXF        SHIFT SIGNIFICAND LEFT (extended DFP)
+	op_SLY     uint32 = 0xE35F // FORMAT_RXY1       SUBTRACT LOGICAL (32)
+	op_SP      uint32 = 0xFB00 // FORMAT_SS2        SUBTRACT DECIMAL
+	op_SPKA    uint32 = 0xB20A // FORMAT_S          SET PSW KEY FROM ADDRESS
+	op_SPM     uint32 = 0x0400 // FORMAT_RR         SET PROGRAM MASK
+	op_SPT     uint32 = 0xB208 // FORMAT_S          SET CPU TIMER
+	op_SPX     uint32 = 0xB210 // FORMAT_S          SET PREFIX
+	op_SQD     uint32 = 0xED35 // FORMAT_RXE        SQUARE ROOT (long HFP)
+	op_SQDB    uint32 = 0xED15 // FORMAT_RXE        SQUARE ROOT (long BFP)
+	op_SQDBR   uint32 = 0xB315 // FORMAT_RRE        SQUARE ROOT (long BFP)
+	op_SQDR    uint32 = 0xB244 // FORMAT_RRE        SQUARE ROOT (long HFP)
+	op_SQE     uint32 = 0xED34 // FORMAT_RXE        SQUARE ROOT (short HFP)
+	op_SQEB    uint32 = 0xED14 // FORMAT_RXE        SQUARE ROOT (short BFP)
+	op_SQEBR   uint32 = 0xB314 // FORMAT_RRE        SQUARE ROOT (short BFP)
+	op_SQER    uint32 = 0xB245 // FORMAT_RRE        SQUARE ROOT (short HFP)
+	op_SQXBR   uint32 = 0xB316 // FORMAT_RRE        SQUARE ROOT (extended BFP)
+	op_SQXR    uint32 = 0xB336 // FORMAT_RRE        SQUARE ROOT (extended HFP)
+	op_SR      uint32 = 0x1B00 // FORMAT_RR         SUBTRACT (32)
+	op_SRA     uint32 = 0x8A00 // FORMAT_RS1        SHIFT RIGHT SINGLE (32)
+	op_SRAG    uint32 = 0xEB0A // FORMAT_RSY1       SHIFT RIGHT SINGLE (64)
+	op_SRAK    uint32 = 0xEBDC // FORMAT_RSY1       SHIFT RIGHT SINGLE (32)
+	op_SRDA    uint32 = 0x8E00 // FORMAT_RS1        SHIFT RIGHT DOUBLE
+	op_SRDL    uint32 = 0x8C00 // FORMAT_RS1        SHIFT RIGHT DOUBLE LOGICAL
+	op_SRDT    uint32 = 0xED41 // FORMAT_RXF        SHIFT SIGNIFICAND RIGHT (long DFP)
+	op_SRK     uint32 = 0xB9F9 // FORMAT_RRF1       SUBTRACT (32)
+	op_SRL     uint32 = 0x8800 // FORMAT_RS1        SHIFT RIGHT SINGLE LOGICAL (32)
+	op_SRLG    uint32 = 0xEB0C // FORMAT_RSY1       SHIFT RIGHT SINGLE LOGICAL (64)
+	op_SRLK    uint32 = 0xEBDE // FORMAT_RSY1       SHIFT RIGHT SINGLE LOGICAL (32)
+	op_SRNM    uint32 = 0xB299 // FORMAT_S          SET BFP ROUNDING MODE (2 bit)
+	op_SRNMB   uint32 = 0xB2B8 // FORMAT_S          SET BFP ROUNDING MODE (3 bit)
+	op_SRNMT   uint32 = 0xB2B9 // FORMAT_S          SET DFP ROUNDING MODE
+	op_SRP     uint32 = 0xF000 // FORMAT_SS3        SHIFT AND ROUND DECIMAL
+	op_SRST    uint32 = 0xB25E // FORMAT_RRE        SEARCH STRING
+	op_SRSTU   uint32 = 0xB9BE // FORMAT_RRE        SEARCH STRING UNICODE
+	op_SRXT    uint32 = 0xED49 // FORMAT_RXF        SHIFT SIGNIFICAND RIGHT (extended DFP)
+	op_SSAIR   uint32 = 0xB99F // FORMAT_RRE        SET SECONDARY ASN WITH INSTANCE
+	op_SSAR    uint32 = 0xB225 // FORMAT_RRE        SET SECONDARY ASN
+	op_SSCH    uint32 = 0xB233 // FORMAT_S          START SUBCHANNEL
+	op_SSKE    uint32 = 0xB22B // FORMAT_RRF3       SET STORAGE KEY EXTENDED
+	op_SSM     uint32 = 0x8000 // FORMAT_S          SET SYSTEM MASK
+	op_ST      uint32 = 0x5000 // FORMAT_RX1        STORE (32)
+	op_STAM    uint32 = 0x9B00 // FORMAT_RS1        STORE ACCESS MULTIPLE
+	op_STAMY   uint32 = 0xEB9B // FORMAT_RSY1       STORE ACCESS MULTIPLE
+	op_STAP    uint32 = 0xB212 // FORMAT_S          STORE CPU ADDRESS
+	op_STC     uint32 = 0x4200 // FORMAT_RX1        STORE CHARACTER
+	op_STCH    uint32 = 0xE3C3 // FORMAT_RXY1       STORE CHARACTER HIGH (8)
+	op_STCK    uint32 = 0xB205 // FORMAT_S          STORE CLOCK
+	op_STCKC   uint32 = 0xB207 // FORMAT_S          STORE CLOCK COMPARATOR
+	op_STCKE   uint32 = 0xB278 // FORMAT_S          STORE CLOCK EXTENDED
+	op_STCKF   uint32 = 0xB27C // FORMAT_S          STORE CLOCK FAST
+	op_STCM    uint32 = 0xBE00 // FORMAT_RS2        STORE CHARACTERS UNDER MASK (low)
+	op_STCMH   uint32 = 0xEB2C // FORMAT_RSY2       STORE CHARACTERS UNDER MASK (high)
+	op_STCMY   uint32 = 0xEB2D // FORMAT_RSY2       STORE CHARACTERS UNDER MASK (low)
+	op_STCPS   uint32 = 0xB23A // FORMAT_S          STORE CHANNEL PATH STATUS
+	op_STCRW   uint32 = 0xB239 // FORMAT_S          STORE CHANNEL REPORT WORD
+	op_STCTG   uint32 = 0xEB25 // FORMAT_RSY1       STORE CONTROL (64)
+	op_STCTL   uint32 = 0xB600 // FORMAT_RS1        STORE CONTROL (32)
+	op_STCY    uint32 = 0xE372 // FORMAT_RXY1       STORE CHARACTER
+	op_STD     uint32 = 0x6000 // FORMAT_RX1        STORE (long)
+	op_STDY    uint32 = 0xED67 // FORMAT_RXY1       STORE (long)
+	op_STE     uint32 = 0x7000 // FORMAT_RX1        STORE (short)
+	op_STEY    uint32 = 0xED66 // FORMAT_RXY1       STORE (short)
+	op_STFH    uint32 = 0xE3CB // FORMAT_RXY1       STORE HIGH (32)
+	op_STFL    uint32 = 0xB2B1 // FORMAT_S          STORE FACILITY LIST
+	op_STFLE   uint32 = 0xB2B0 // FORMAT_S          STORE FACILITY LIST EXTENDED
+	op_STFPC   uint32 = 0xB29C // FORMAT_S          STORE FPC
+	op_STG     uint32 = 0xE324 // FORMAT_RXY1       STORE (64)
+	op_STGRL   uint32 = 0xC40B // FORMAT_RIL2       STORE RELATIVE LONG (64)
+	op_STH     uint32 = 0x4000 // FORMAT_RX1        STORE HALFWORD
+	op_STHH    uint32 = 0xE3C7 // FORMAT_RXY1       STORE HALFWORD HIGH (16)
+	op_STHRL   uint32 = 0xC407 // FORMAT_RIL2       STORE HALFWORD RELATIVE LONG
+	op_STHY    uint32 = 0xE370 // FORMAT_RXY1       STORE HALFWORD
+	op_STIDP   uint32 = 0xB202 // FORMAT_S          STORE CPU ID
+	op_STM     uint32 = 0x9000 // FORMAT_RS1        STORE MULTIPLE (32)
+	op_STMG    uint32 = 0xEB24 // FORMAT_RSY1       STORE MULTIPLE (64)
+	op_STMH    uint32 = 0xEB26 // FORMAT_RSY1       STORE MULTIPLE HIGH
+	op_STMY    uint32 = 0xEB90 // FORMAT_RSY1       STORE MULTIPLE (32)
+	op_STNSM   uint32 = 0xAC00 // FORMAT_SI         STORE THEN AND SYSTEM MASK
+	op_STOC    uint32 = 0xEBF3 // FORMAT_RSY2       STORE ON CONDITION (32)
+	op_STOCG   uint32 = 0xEBE3 // FORMAT_RSY2       STORE ON CONDITION (64)
+	op_STOSM   uint32 = 0xAD00 // FORMAT_SI         STORE THEN OR SYSTEM MASK
+	op_STPQ    uint32 = 0xE38E // FORMAT_RXY1       STORE PAIR TO QUADWORD
+	op_STPT    uint32 = 0xB209 // FORMAT_S          STORE CPU TIMER
+	op_STPX    uint32 = 0xB211 // FORMAT_S          STORE PREFIX
+	op_STRAG   uint32 = 0xE502 // FORMAT_SSE        STORE REAL ADDRESS
+	op_STRL    uint32 = 0xC40F // FORMAT_RIL2       STORE RELATIVE LONG (32)
+	op_STRV    uint32 = 0xE33E // FORMAT_RXY1       STORE REVERSED (32)
+	op_STRVG   uint32 = 0xE32F // FORMAT_RXY1       STORE REVERSED (64)
+	op_STRVH   uint32 = 0xE33F // FORMAT_RXY1       STORE REVERSED (16)
+	op_STSCH   uint32 = 0xB234 // FORMAT_S          STORE SUBCHANNEL
+	op_STSI    uint32 = 0xB27D // FORMAT_S          STORE SYSTEM INFORMATION
+	op_STURA   uint32 = 0xB246 // FORMAT_RRE        STORE USING REAL ADDRESS (32)
+	op_STURG   uint32 = 0xB925 // FORMAT_RRE        STORE USING REAL ADDRESS (64)
+	op_STY     uint32 = 0xE350 // FORMAT_RXY1       STORE (32)
+	op_SU      uint32 = 0x7F00 // FORMAT_RX1        SUBTRACT UNNORMALIZED (short HFP)
+	op_SUR     uint32 = 0x3F00 // FORMAT_RR         SUBTRACT UNNORMALIZED (short HFP)
+	op_SVC     uint32 = 0x0A00 // FORMAT_I          SUPERVISOR CALL
+	op_SW      uint32 = 0x6F00 // FORMAT_RX1        SUBTRACT UNNORMALIZED (long HFP)
+	op_SWR     uint32 = 0x2F00 // FORMAT_RR         SUBTRACT UNNORMALIZED (long HFP)
+	op_SXBR    uint32 = 0xB34B // FORMAT_RRE        SUBTRACT (extended BFP)
+	op_SXR     uint32 = 0x3700 // FORMAT_RR         SUBTRACT NORMALIZED (extended HFP)
+	op_SXTR    uint32 = 0xB3DB // FORMAT_RRF1       SUBTRACT (extended DFP)
+	op_SXTRA   uint32 = 0xB3DB // FORMAT_RRF1       SUBTRACT (extended DFP)
+	op_SY      uint32 = 0xE35B // FORMAT_RXY1       SUBTRACT (32)
+	op_TABORT  uint32 = 0xB2FC // FORMAT_S          TRANSACTION ABORT
+	op_TAM     uint32 = 0x010B // FORMAT_E          TEST ADDRESSING MODE
+	op_TAR     uint32 = 0xB24C // FORMAT_RRE        TEST ACCESS
+	op_TB      uint32 = 0xB22C // FORMAT_RRE        TEST BLOCK
+	op_TBDR    uint32 = 0xB351 // FORMAT_RRF5       CONVERT HFP TO BFP (long)
+	op_TBEDR   uint32 = 0xB350 // FORMAT_RRF5       CONVERT HFP TO BFP (long to short)
+	op_TBEGIN  uint32 = 0xE560 // FORMAT_SIL        TRANSACTION BEGIN
+	op_TBEGINC uint32 = 0xE561 // FORMAT_SIL        TRANSACTION BEGIN
+	op_TCDB    uint32 = 0xED11 // FORMAT_RXE        TEST DATA CLASS (long BFP)
+	op_TCEB    uint32 = 0xED10 // FORMAT_RXE        TEST DATA CLASS (short BFP)
+	op_TCXB    uint32 = 0xED12 // FORMAT_RXE        TEST DATA CLASS (extended BFP)
+	op_TDCDT   uint32 = 0xED54 // FORMAT_RXE        TEST DATA CLASS (long DFP)
+	op_TDCET   uint32 = 0xED50 // FORMAT_RXE        TEST DATA CLASS (short DFP)
+	op_TDCXT   uint32 = 0xED58 // FORMAT_RXE        TEST DATA CLASS (extended DFP)
+	op_TDGDT   uint32 = 0xED55 // FORMAT_RXE        TEST DATA GROUP (long DFP)
+	op_TDGET   uint32 = 0xED51 // FORMAT_RXE        TEST DATA GROUP (short DFP)
+	op_TDGXT   uint32 = 0xED59 // FORMAT_RXE        TEST DATA GROUP (extended DFP)
+	op_TEND    uint32 = 0xB2F8 // FORMAT_S          TRANSACTION END
+	op_THDER   uint32 = 0xB358 // FORMAT_RRE        CONVERT BFP TO HFP (short to long)
+	op_THDR    uint32 = 0xB359 // FORMAT_RRE        CONVERT BFP TO HFP (long)
+	op_TM      uint32 = 0x9100 // FORMAT_SI         TEST UNDER MASK
+	op_TMH     uint32 = 0xA700 // FORMAT_RI1        TEST UNDER MASK HIGH
+	op_TMHH    uint32 = 0xA702 // FORMAT_RI1        TEST UNDER MASK (high high)
+	op_TMHL    uint32 = 0xA703 // FORMAT_RI1        TEST UNDER MASK (high low)
+	op_TML     uint32 = 0xA701 // FORMAT_RI1        TEST UNDER MASK LOW
+	op_TMLH    uint32 = 0xA700 // FORMAT_RI1        TEST UNDER MASK (low high)
+	op_TMLL    uint32 = 0xA701 // FORMAT_RI1        TEST UNDER MASK (low low)
+	op_TMY     uint32 = 0xEB51 // FORMAT_SIY        TEST UNDER MASK
+	op_TP      uint32 = 0xEBC0 // FORMAT_RSL        TEST DECIMAL
+	op_TPI     uint32 = 0xB236 // FORMAT_S          TEST PENDING INTERRUPTION
+	op_TPROT   uint32 = 0xE501 // FORMAT_SSE        TEST PROTECTION
+	op_TR      uint32 = 0xDC00 // FORMAT_SS1        TRANSLATE
+	op_TRACE   uint32 = 0x9900 // FORMAT_RS1        TRACE (32)
+	op_TRACG   uint32 = 0xEB0F // FORMAT_RSY1       TRACE (64)
+	op_TRAP2   uint32 = 0x01FF // FORMAT_E          TRAP
+	op_TRAP4   uint32 = 0xB2FF // FORMAT_S          TRAP
+	op_TRE     uint32 = 0xB2A5 // FORMAT_RRE        TRANSLATE EXTENDED
+	op_TROO    uint32 = 0xB993 // FORMAT_RRF3       TRANSLATE ONE TO ONE
+	op_TROT    uint32 = 0xB992 // FORMAT_RRF3       TRANSLATE ONE TO TWO
+	op_TRT     uint32 = 0xDD00 // FORMAT_SS1        TRANSLATE AND TEST
+	op_TRTE    uint32 = 0xB9BF // FORMAT_RRF3       TRANSLATE AND TEST EXTENDED
+	op_TRTO    uint32 = 0xB991 // FORMAT_RRF3       TRANSLATE TWO TO ONE
+	op_TRTR    uint32 = 0xD000 // FORMAT_SS1        TRANSLATE AND TEST REVERSE
+	op_TRTRE   uint32 = 0xB9BD // FORMAT_RRF3       TRANSLATE AND TEST REVERSE EXTENDED
+	op_TRTT    uint32 = 0xB990 // FORMAT_RRF3       TRANSLATE TWO TO TWO
+	op_TS      uint32 = 0x9300 // FORMAT_S          TEST AND SET
+	op_TSCH    uint32 = 0xB235 // FORMAT_S          TEST SUBCHANNEL
+	op_UNPK    uint32 = 0xF300 // FORMAT_SS2        UNPACK
+	op_UNPKA   uint32 = 0xEA00 // FORMAT_SS1        UNPACK ASCII
+	op_UNPKU   uint32 = 0xE200 // FORMAT_SS1        UNPACK UNICODE
+	op_UPT     uint32 = 0x0102 // FORMAT_E          UPDATE TREE
+	op_X       uint32 = 0x5700 // FORMAT_RX1        EXCLUSIVE OR (32)
+	op_XC      uint32 = 0xD700 // FORMAT_SS1        EXCLUSIVE OR (character)
+	op_XG      uint32 = 0xE382 // FORMAT_RXY1       EXCLUSIVE OR (64)
+	op_XGR     uint32 = 0xB982 // FORMAT_RRE        EXCLUSIVE OR (64)
+	op_XGRK    uint32 = 0xB9E7 // FORMAT_RRF1       EXCLUSIVE OR (64)
+	op_XI      uint32 = 0x9700 // FORMAT_SI         EXCLUSIVE OR (immediate)
+	op_XIHF    uint32 = 0xC006 // FORMAT_RIL1       EXCLUSIVE OR IMMEDIATE (high)
+	op_XILF    uint32 = 0xC007 // FORMAT_RIL1       EXCLUSIVE OR IMMEDIATE (low)
+	op_XIY     uint32 = 0xEB57 // FORMAT_SIY        EXCLUSIVE OR (immediate)
+	op_XR      uint32 = 0x1700 // FORMAT_RR         EXCLUSIVE OR (32)
+	op_XRK     uint32 = 0xB9F7 // FORMAT_RRF1       EXCLUSIVE OR (32)
+	op_XSCH    uint32 = 0xB276 // FORMAT_S          CANCEL SUBCHANNEL
+	op_XY      uint32 = 0xE357 // FORMAT_RXY1       EXCLUSIVE OR (32)
+	op_ZAP     uint32 = 0xF800 // FORMAT_SS2        ZERO AND ADD
+
+	// added in z13
+	op_CXPT   uint32 = 0xEDAF // 	RSL-b	CONVERT FROM PACKED (to extended DFP)
+	op_CDPT   uint32 = 0xEDAE // 	RSL-b	CONVERT FROM PACKED (to long DFP)
+	op_CPXT   uint32 = 0xEDAD // 	RSL-b	CONVERT TO PACKED (from extended DFP)
+	op_CPDT   uint32 = 0xEDAC // 	RSL-b	CONVERT TO PACKED (from long DFP)
+	op_LZRF   uint32 = 0xE33B // 	RXY-a	LOAD AND ZERO RIGHTMOST BYTE (32)
+	op_LZRG   uint32 = 0xE32A // 	RXY-a	LOAD AND ZERO RIGHTMOST BYTE (64)
+	op_LCCB   uint32 = 0xE727 // 	RXE	LOAD COUNT TO BLOCK BOUNDARY
+	op_LOCHHI uint32 = 0xEC4E // 	RIE-g	LOAD HALFWORD HIGH IMMEDIATE ON CONDITION (32←16)
+	op_LOCHI  uint32 = 0xEC42 // 	RIE-g	LOAD HALFWORD IMMEDIATE ON CONDITION (32←16)
+	op_LOCGHI uint32 = 0xEC46 // 	RIE-g	LOAD HALFWORD IMMEDIATE ON CONDITION (64←16)
+	op_LOCFH  uint32 = 0xEBE0 // 	RSY-b	LOAD HIGH ON CONDITION (32)
+	op_LOCFHR uint32 = 0xB9E0 // 	RRF-c	LOAD HIGH ON CONDITION (32)
+	op_LLZRGF uint32 = 0xE33A // 	RXY-a	LOAD LOGICAL AND ZERO RIGHTMOST BYTE (64←32)
+	op_STOCFH uint32 = 0xEBE1 // 	RSY-b	STORE HIGH ON CONDITION
+	op_VA     uint32 = 0xE7F3 // 	VRR-c	VECTOR ADD
+	op_VACC   uint32 = 0xE7F1 // 	VRR-c	VECTOR ADD COMPUTE CARRY
+	op_VAC    uint32 = 0xE7BB // 	VRR-d	VECTOR ADD WITH CARRY
+	op_VACCC  uint32 = 0xE7B9 // 	VRR-d	VECTOR ADD WITH CARRY COMPUTE CARRY
+	op_VN     uint32 = 0xE768 // 	VRR-c	VECTOR AND
+	op_VNC    uint32 = 0xE769 // 	VRR-c	VECTOR AND WITH COMPLEMENT
+	op_VAVG   uint32 = 0xE7F2 // 	VRR-c	VECTOR AVERAGE
+	op_VAVGL  uint32 = 0xE7F0 // 	VRR-c	VECTOR AVERAGE LOGICAL
+	op_VCKSM  uint32 = 0xE766 // 	VRR-c	VECTOR CHECKSUM
+	op_VCEQ   uint32 = 0xE7F8 // 	VRR-b	VECTOR COMPARE EQUAL
+	op_VCH    uint32 = 0xE7FB // 	VRR-b	VECTOR COMPARE HIGH
+	op_VCHL   uint32 = 0xE7F9 // 	VRR-b	VECTOR COMPARE HIGH LOGICAL
+	op_VCLZ   uint32 = 0xE753 // 	VRR-a	VECTOR COUNT LEADING ZEROS
+	op_VCTZ   uint32 = 0xE752 // 	VRR-a	VECTOR COUNT TRAILING ZEROS
+	op_VEC    uint32 = 0xE7DB // 	VRR-a	VECTOR ELEMENT COMPARE
+	op_VECL   uint32 = 0xE7D9 // 	VRR-a	VECTOR ELEMENT COMPARE LOGICAL
+	op_VERIM  uint32 = 0xE772 // 	VRI-d	VECTOR ELEMENT ROTATE AND INSERT UNDER MASK
+	op_VERLL  uint32 = 0xE733 // 	VRS-a	VECTOR ELEMENT ROTATE LEFT LOGICAL
+	op_VERLLV uint32 = 0xE773 // 	VRR-c	VECTOR ELEMENT ROTATE LEFT LOGICAL
+	op_VESLV  uint32 = 0xE770 // 	VRR-c	VECTOR ELEMENT SHIFT LEFT
+	op_VESL   uint32 = 0xE730 // 	VRS-a	VECTOR ELEMENT SHIFT LEFT
+	op_VESRA  uint32 = 0xE73A // 	VRS-a	VECTOR ELEMENT SHIFT RIGHT ARITHMETIC
+	op_VESRAV uint32 = 0xE77A // 	VRR-c	VECTOR ELEMENT SHIFT RIGHT ARITHMETIC
+	op_VESRL  uint32 = 0xE738 // 	VRS-a	VECTOR ELEMENT SHIFT RIGHT LOGICAL
+	op_VESRLV uint32 = 0xE778 // 	VRR-c	VECTOR ELEMENT SHIFT RIGHT LOGICAL
+	op_VX     uint32 = 0xE76D // 	VRR-c	VECTOR EXCLUSIVE OR
+	op_VFAE   uint32 = 0xE782 // 	VRR-b	VECTOR FIND ANY ELEMENT EQUAL
+	op_VFEE   uint32 = 0xE780 // 	VRR-b	VECTOR FIND ELEMENT EQUAL
+	op_VFENE  uint32 = 0xE781 // 	VRR-b	VECTOR FIND ELEMENT NOT EQUAL
+	op_VFA    uint32 = 0xE7E3 // 	VRR-c	VECTOR FP ADD
+	op_WFK    uint32 = 0xE7CA // 	VRR-a	VECTOR FP COMPARE AND SIGNAL SCALAR
+	op_VFCE   uint32 = 0xE7E8 // 	VRR-c	VECTOR FP COMPARE EQUAL
+	op_VFCH   uint32 = 0xE7EB // 	VRR-c	VECTOR FP COMPARE HIGH
+	op_VFCHE  uint32 = 0xE7EA // 	VRR-c	VECTOR FP COMPARE HIGH OR EQUAL
+	op_WFC    uint32 = 0xE7CB // 	VRR-a	VECTOR FP COMPARE SCALAR
+	op_VCDG   uint32 = 0xE7C3 // 	VRR-a	VECTOR FP CONVERT FROM FIXED 64-BIT
+	op_VCDLG  uint32 = 0xE7C1 // 	VRR-a	VECTOR FP CONVERT FROM LOGICAL 64-BIT
+	op_VCGD   uint32 = 0xE7C2 // 	VRR-a	VECTOR FP CONVERT TO FIXED 64-BIT
+	op_VCLGD  uint32 = 0xE7C0 // 	VRR-a	VECTOR FP CONVERT TO LOGICAL 64-BIT
+	op_VFD    uint32 = 0xE7E5 // 	VRR-c	VECTOR FP DIVIDE
+	op_VLDE   uint32 = 0xE7C4 // 	VRR-a	VECTOR FP LOAD LENGTHENED
+	op_VLED   uint32 = 0xE7C5 // 	VRR-a	VECTOR FP LOAD ROUNDED
+	op_VFM    uint32 = 0xE7E7 // 	VRR-c	VECTOR FP MULTIPLY
+	op_VFMA   uint32 = 0xE78F // 	VRR-e	VECTOR FP MULTIPLY AND ADD
+	op_VFMS   uint32 = 0xE78E // 	VRR-e	VECTOR FP MULTIPLY AND SUBTRACT
+	op_VFPSO  uint32 = 0xE7CC // 	VRR-a	VECTOR FP PERFORM SIGN OPERATION
+	op_VFSQ   uint32 = 0xE7CE // 	VRR-a	VECTOR FP SQUARE ROOT
+	op_VFS    uint32 = 0xE7E2 // 	VRR-c	VECTOR FP SUBTRACT
+	op_VFTCI  uint32 = 0xE74A // 	VRI-e	VECTOR FP TEST DATA CLASS IMMEDIATE
+	op_VGFM   uint32 = 0xE7B4 // 	VRR-c	VECTOR GALOIS FIELD MULTIPLY SUM
+	op_VGFMA  uint32 = 0xE7BC // 	VRR-d	VECTOR GALOIS FIELD MULTIPLY SUM AND ACCUMULATE
+	op_VGEF   uint32 = 0xE713 // 	VRV	VECTOR GATHER ELEMENT (32)
+	op_VGEG   uint32 = 0xE712 // 	VRV	VECTOR GATHER ELEMENT (64)
+	op_VGBM   uint32 = 0xE744 // 	VRI-a	VECTOR GENERATE BYTE MASK
+	op_VGM    uint32 = 0xE746 // 	VRI-b	VECTOR GENERATE MASK
+	op_VISTR  uint32 = 0xE75C // 	VRR-a	VECTOR ISOLATE STRING
+	op_VL     uint32 = 0xE706 // 	VRX	VECTOR LOAD
+	op_VLR    uint32 = 0xE756 // 	VRR-a	VECTOR LOAD
+	op_VLREP  uint32 = 0xE705 // 	VRX	VECTOR LOAD AND REPLICATE
+	op_VLC    uint32 = 0xE7DE // 	VRR-a	VECTOR LOAD COMPLEMENT
+	op_VLEH   uint32 = 0xE701 // 	VRX	VECTOR LOAD ELEMENT (16)
+	op_VLEF   uint32 = 0xE703 // 	VRX	VECTOR LOAD ELEMENT (32)
+	op_VLEG   uint32 = 0xE702 // 	VRX	VECTOR LOAD ELEMENT (64)
+	op_VLEB   uint32 = 0xE700 // 	VRX	VECTOR LOAD ELEMENT (8)
+	op_VLEIH  uint32 = 0xE741 // 	VRI-a	VECTOR LOAD ELEMENT IMMEDIATE (16)
+	op_VLEIF  uint32 = 0xE743 // 	VRI-a	VECTOR LOAD ELEMENT IMMEDIATE (32)
+	op_VLEIG  uint32 = 0xE742 // 	VRI-a	VECTOR LOAD ELEMENT IMMEDIATE (64)
+	op_VLEIB  uint32 = 0xE740 // 	VRI-a	VECTOR LOAD ELEMENT IMMEDIATE (8)
+	op_VFI    uint32 = 0xE7C7 // 	VRR-a	VECTOR LOAD FP INTEGER
+	op_VLGV   uint32 = 0xE721 // 	VRS-c	VECTOR LOAD GR FROM VR ELEMENT
+	op_VLLEZ  uint32 = 0xE704 // 	VRX	VECTOR LOAD LOGICAL ELEMENT AND ZERO
+	op_VLM    uint32 = 0xE736 // 	VRS-a	VECTOR LOAD MULTIPLE
+	op_VLP    uint32 = 0xE7DF // 	VRR-a	VECTOR LOAD POSITIVE
+	op_VLBB   uint32 = 0xE707 // 	VRX	VECTOR LOAD TO BLOCK BOUNDARY
+	op_VLVG   uint32 = 0xE722 // 	VRS-b	VECTOR LOAD VR ELEMENT FROM GR
+	op_VLVGP  uint32 = 0xE762 // 	VRR-f	VECTOR LOAD VR FROM GRS DISJOINT
+	op_VLL    uint32 = 0xE737 // 	VRS-b	VECTOR LOAD WITH LENGTH
+	op_VMX    uint32 = 0xE7FF // 	VRR-c	VECTOR MAXIMUM
+	op_VMXL   uint32 = 0xE7FD // 	VRR-c	VECTOR MAXIMUM LOGICAL
+	op_VMRH   uint32 = 0xE761 // 	VRR-c	VECTOR MERGE HIGH
+	op_VMRL   uint32 = 0xE760 // 	VRR-c	VECTOR MERGE LOW
+	op_VMN    uint32 = 0xE7FE // 	VRR-c	VECTOR MINIMUM
+	op_VMNL   uint32 = 0xE7FC // 	VRR-c	VECTOR MINIMUM LOGICAL
+	op_VMAE   uint32 = 0xE7AE // 	VRR-d	VECTOR MULTIPLY AND ADD EVEN
+	op_VMAH   uint32 = 0xE7AB // 	VRR-d	VECTOR MULTIPLY AND ADD HIGH
+	op_VMALE  uint32 = 0xE7AC // 	VRR-d	VECTOR MULTIPLY AND ADD LOGICAL EVEN
+	op_VMALH  uint32 = 0xE7A9 // 	VRR-d	VECTOR MULTIPLY AND ADD LOGICAL HIGH
+	op_VMALO  uint32 = 0xE7AD // 	VRR-d	VECTOR MULTIPLY AND ADD LOGICAL ODD
+	op_VMAL   uint32 = 0xE7AA // 	VRR-d	VECTOR MULTIPLY AND ADD LOW
+	op_VMAO   uint32 = 0xE7AF // 	VRR-d	VECTOR MULTIPLY AND ADD ODD
+	op_VME    uint32 = 0xE7A6 // 	VRR-c	VECTOR MULTIPLY EVEN
+	op_VMH    uint32 = 0xE7A3 // 	VRR-c	VECTOR MULTIPLY HIGH
+	op_VMLE   uint32 = 0xE7A4 // 	VRR-c	VECTOR MULTIPLY EVEN LOGICAL
+	op_VMLH   uint32 = 0xE7A1 // 	VRR-c	VECTOR MULTIPLY HIGH LOGICAL
+	op_VMLO   uint32 = 0xE7A5 // 	VRR-c	VECTOR MULTIPLY ODD LOGICAL
+	op_VML    uint32 = 0xE7A2 // 	VRR-c	VECTOR MULTIPLY LOW
+	op_VMO    uint32 = 0xE7A7 // 	VRR-c	VECTOR MULTIPLY ODD
+	op_VNO    uint32 = 0xE76B // 	VRR-c	VECTOR NOR
+	op_VO     uint32 = 0xE76A // 	VRR-c	VECTOR OR
+	op_VPK    uint32 = 0xE794 // 	VRR-c	VECTOR PACK
+	op_VPKLS  uint32 = 0xE795 // 	VRR-b	VECTOR PACK LOGICAL SATURATE
+	op_VPKS   uint32 = 0xE797 // 	VRR-b	VECTOR PACK SATURATE
+	op_VPERM  uint32 = 0xE78C // 	VRR-e	VECTOR PERMUTE
+	op_VPDI   uint32 = 0xE784 // 	VRR-c	VECTOR PERMUTE DOUBLEWORD IMMEDIATE
+	op_VPOPCT uint32 = 0xE750 // 	VRR-a	VECTOR POPULATION COUNT
+	op_VREP   uint32 = 0xE74D // 	VRI-c	VECTOR REPLICATE
+	op_VREPI  uint32 = 0xE745 // 	VRI-a	VECTOR REPLICATE IMMEDIATE
+	op_VSCEF  uint32 = 0xE71B // 	VRV	VECTOR SCATTER ELEMENT (32)
+	op_VSCEG  uint32 = 0xE71A // 	VRV	VECTOR SCATTER ELEMENT (64)
+	op_VSEL   uint32 = 0xE78D // 	VRR-e	VECTOR SELECT
+	op_VSL    uint32 = 0xE774 // 	VRR-c	VECTOR SHIFT LEFT
+	op_VSLB   uint32 = 0xE775 // 	VRR-c	VECTOR SHIFT LEFT BY BYTE
+	op_VSLDB  uint32 = 0xE777 // 	VRI-d	VECTOR SHIFT LEFT DOUBLE BY BYTE
+	op_VSRA   uint32 = 0xE77E // 	VRR-c	VECTOR SHIFT RIGHT ARITHMETIC
+	op_VSRAB  uint32 = 0xE77F // 	VRR-c	VECTOR SHIFT RIGHT ARITHMETIC BY BYTE
+	op_VSRL   uint32 = 0xE77C // 	VRR-c	VECTOR SHIFT RIGHT LOGICAL
+	op_VSRLB  uint32 = 0xE77D // 	VRR-c	VECTOR SHIFT RIGHT LOGICAL BY BYTE
+	op_VSEG   uint32 = 0xE75F // 	VRR-a	VECTOR SIGN EXTEND TO DOUBLEWORD
+	op_VST    uint32 = 0xE70E // 	VRX	VECTOR STORE
+	op_VSTEH  uint32 = 0xE709 // 	VRX	VECTOR STORE ELEMENT (16)
+	op_VSTEF  uint32 = 0xE70B // 	VRX	VECTOR STORE ELEMENT (32)
+	op_VSTEG  uint32 = 0xE70A // 	VRX	VECTOR STORE ELEMENT (64)
+	op_VSTEB  uint32 = 0xE708 // 	VRX	VECTOR STORE ELEMENT (8)
+	op_VSTM   uint32 = 0xE73E // 	VRS-a	VECTOR STORE MULTIPLE
+	op_VSTL   uint32 = 0xE73F // 	VRS-b	VECTOR STORE WITH LENGTH
+	op_VSTRC  uint32 = 0xE78A // 	VRR-d	VECTOR STRING RANGE COMPARE
+	op_VS     uint32 = 0xE7F7 // 	VRR-c	VECTOR SUBTRACT
+	op_VSCBI  uint32 = 0xE7F5 // 	VRR-c	VECTOR SUBTRACT COMPUTE BORROW INDICATION
+	op_VSBCBI uint32 = 0xE7BD // 	VRR-d	VECTOR SUBTRACT WITH BORROW COMPUTE BORROW INDICATION
+	op_VSBI   uint32 = 0xE7BF // 	VRR-d	VECTOR SUBTRACT WITH BORROW INDICATION
+	op_VSUMG  uint32 = 0xE765 // 	VRR-c	VECTOR SUM ACROSS DOUBLEWORD
+	op_VSUMQ  uint32 = 0xE767 // 	VRR-c	VECTOR SUM ACROSS QUADWORD
+	op_VSUM   uint32 = 0xE764 // 	VRR-c	VECTOR SUM ACROSS WORD
+	op_VTM    uint32 = 0xE7D8 // 	VRR-a	VECTOR TEST UNDER MASK
+	op_VUPH   uint32 = 0xE7D7 // 	VRR-a	VECTOR UNPACK HIGH
+	op_VUPLH  uint32 = 0xE7D5 // 	VRR-a	VECTOR UNPACK LOGICAL HIGH
+	op_VUPLL  uint32 = 0xE7D4 // 	VRR-a	VECTOR UNPACK LOGICAL LOW
+	op_VUPL   uint32 = 0xE7D6 // 	VRR-a	VECTOR UNPACK LOW
+)
+
+func oclass(a *obj.Addr) int {
+	return int(a.Class) - 1
+}
+
+// Add a relocation for the immediate in a RIL style instruction.
+// The addend will be adjusted as required.
+func addrilreloc(ctxt *obj.Link, sym *obj.LSym, add int64) *obj.Reloc {
+	if sym == nil {
+		ctxt.Diag("require symbol to apply relocation")
+	}
+	offset := int64(2) // relocation offset from start of instruction
+	rel := obj.Addrel(ctxt.Cursym)
+	rel.Off = int32(ctxt.Pc + offset)
+	rel.Siz = 4
+	rel.Sym = sym
+	rel.Add = add + offset + int64(rel.Siz)
+	rel.Type = obj.R_PCRELDBL
+	return rel
+}
+
+func addrilrelocoffset(ctxt *obj.Link, sym *obj.LSym, add, offset int64) *obj.Reloc {
+	if sym == nil {
+		ctxt.Diag("require symbol to apply relocation")
+	}
+	offset += int64(2) // relocation offset from start of instruction
+	rel := obj.Addrel(ctxt.Cursym)
+	rel.Off = int32(ctxt.Pc + offset)
+	rel.Siz = 4
+	rel.Sym = sym
+	rel.Add = add + offset + int64(rel.Siz)
+	rel.Type = obj.R_PCRELDBL
+	return rel
+}
+
+// Add a CALL relocation for the immediate in a RIL style instruction.
+// The addend will be adjusted as required.
+func addcallreloc(ctxt *obj.Link, sym *obj.LSym, add int64) *obj.Reloc {
+	if sym == nil {
+		ctxt.Diag("require symbol to apply relocation")
+	}
+	offset := int64(2) // relocation offset from start of instruction
+	rel := obj.Addrel(ctxt.Cursym)
+	rel.Off = int32(ctxt.Pc + offset)
+	rel.Siz = 4
+	rel.Sym = sym
+	rel.Add = add + offset + int64(rel.Siz)
+	rel.Type = obj.R_CALL
+	return rel
+}
+
+func branchMask(ctxt *obj.Link, p *obj.Prog) uint32 {
+	switch p.As {
+	case ABEQ, ACMPBEQ, ACMPUBEQ, AMOVDEQ:
+		return 0x8
+	case ABGE, ACMPBGE, ACMPUBGE, AMOVDGE:
+		return 0xA
+	case ABGT, ACMPBGT, ACMPUBGT, AMOVDGT:
+		return 0x2
+	case ABLE, ACMPBLE, ACMPUBLE, AMOVDLE:
+		return 0xC
+	case ABLT, ACMPBLT, ACMPUBLT, AMOVDLT:
+		return 0x4
+	case ABNE, ACMPBNE, ACMPUBNE, AMOVDNE:
+		return 0x7
+	case ABLEU: // LE or unordered
+		return 0xD
+	case ABLTU: // LT or unordered
+		return 0x5
+	case ABVC:
+		return 0x0 // needs extra instruction
+	case ABVS:
+		return 0x1 // unordered
+	}
+	ctxt.Diag("unknown conditional branch %v", p.As)
+	return 0xF
+}
+
+func asmout(ctxt *obj.Link, asm *[]byte) {
+	p := ctxt.Curp
+	o := oplook(ctxt, p)
+	ctxt.Printp = p
+
+	switch o.type_ {
+	default:
+		ctxt.Diag("unknown type %d", o.type_)
+
+	case 0: // PSEUDO OPS
+		break
+
+	case 1: // mov reg reg
+		switch p.As {
+		default:
+			ctxt.Diag("unhandled operation: %v", p.As)
+		case AMOVD:
+			zRRE(op_LGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		// sign extend
+		case AMOVW:
+			zRRE(op_LGFR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		case AMOVH:
+			zRRE(op_LGHR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		case AMOVB:
+			zRRE(op_LGBR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		// zero extend
+		case AMOVWZ:
+			zRRE(op_LLGFR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		case AMOVHZ:
+			zRRE(op_LLGHR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		case AMOVBZ:
+			zRRE(op_LLGCR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		// reverse bytes
+		case AMOVDBR:
+			zRRE(op_LRVGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		case AMOVWBR:
+			zRRE(op_LRVR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		// floating point
+		case AFMOVD, AFMOVS:
+			zRR(op_LDR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		}
+
+	case 2: // arithmetic op reg [reg] reg
+		r := p.Reg
+		if r == 0 {
+			r = p.To.Reg
+		}
+
+		var opcode uint32
+
+		switch p.As {
+		default:
+			ctxt.Diag("invalid opcode")
+		case AADD:
+			opcode = op_AGRK
+		case AADDC:
+			opcode = op_ALGRK
+		case AADDE:
+			opcode = op_ALCGR
+		case AADDW:
+			opcode = op_ARK
+		case AMULLW:
+			opcode = op_MSGFR
+		case AMULLD:
+			opcode = op_MSGR
+		case ADIVW, AMODW:
+			opcode = op_DSGFR
+		case ADIVWU, AMODWU:
+			opcode = op_DLR
+		case ADIVD, AMODD:
+			opcode = op_DSGR
+		case ADIVDU, AMODDU:
+			opcode = op_DLGR
+		case AFADD:
+			opcode = op_ADBR
+		case AFADDS:
+			opcode = op_AEBR
+		case AFSUB:
+			opcode = op_SDBR
+		case AFSUBS:
+			opcode = op_SEBR
+		case AFDIV:
+			opcode = op_DDBR
+		case AFDIVS:
+			opcode = op_DEBR
+		}
+
+		switch p.As {
+		default:
+
+		case AADD, AADDC, AADDW:
+			if p.As == AADDW && r == p.To.Reg {
+				zRR(op_AR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else {
+				zRRF(opcode, uint32(p.From.Reg), 0, uint32(p.To.Reg), uint32(r), asm)
+			}
+
+		case AADDE, AMULLW, AMULLD:
+			if r == p.To.Reg {
+				zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else if p.From.Reg == p.To.Reg {
+				zRRE(opcode, uint32(p.To.Reg), uint32(r), asm)
+			} else {
+				zRRE(op_LGR, uint32(p.To.Reg), uint32(r), asm)
+				zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			}
+
+		case ADIVW, ADIVWU, ADIVD, ADIVDU:
+			if p.As == ADIVWU || p.As == ADIVDU {
+				zRI(op_LGHI, REGTMP, 0, asm)
+			}
+			zRRE(op_LGR, REGTMP2, uint32(r), asm)
+			zRRE(opcode, REGTMP, uint32(p.From.Reg), asm)
+			zRRE(op_LGR, uint32(p.To.Reg), REGTMP2, asm)
+
+		case AMODW, AMODWU, AMODD, AMODDU:
+			if p.As == AMODWU || p.As == AMODDU {
+				zRI(op_LGHI, REGTMP, 0, asm)
+			}
+			zRRE(op_LGR, REGTMP2, uint32(r), asm)
+			zRRE(opcode, REGTMP, uint32(p.From.Reg), asm)
+			zRRE(op_LGR, uint32(p.To.Reg), REGTMP, asm)
+
+		case AFADD, AFADDS:
+			if r == p.To.Reg {
+				zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else if p.From.Reg == p.To.Reg {
+				zRRE(opcode, uint32(p.To.Reg), uint32(r), asm)
+			} else {
+				zRR(op_LDR, uint32(p.To.Reg), uint32(r), asm)
+				zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			}
+
+		case AFSUB, AFSUBS, AFDIV, AFDIVS:
+			if r == p.To.Reg {
+				zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else if p.From.Reg == p.To.Reg {
+				zRRE(op_LGDR, REGTMP, uint32(r), asm)
+				zRRE(opcode, uint32(r), uint32(p.From.Reg), asm)
+				zRR(op_LDR, uint32(p.To.Reg), uint32(r), asm)
+				zRRE(op_LDGR, uint32(r), REGTMP, asm)
+			} else {
+				zRR(op_LDR, uint32(p.To.Reg), uint32(r), asm)
+				zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			}
+
+		}
+
+	case 3: // mov $constant reg
+		v := vregoff(ctxt, &p.From)
+		switch p.As {
+		case AMOVBZ:
+			v = int64(uint8(v))
+		case AMOVHZ:
+			v = int64(uint16(v))
+		case AMOVWZ:
+			v = int64(uint32(v))
+		case AMOVB:
+			v = int64(int8(v))
+		case AMOVH:
+			v = int64(int16(v))
+		case AMOVW:
+			v = int64(int32(v))
+		}
+		if int64(int16(v)) == v {
+			zRI(op_LGHI, uint32(p.To.Reg), uint32(v), asm)
+		} else if v&0xffff0000 == v {
+			zRI(op_LLILH, uint32(p.To.Reg), uint32(v>>16), asm)
+		} else if v&0xffff00000000 == v {
+			zRI(op_LLIHL, uint32(p.To.Reg), uint32(v>>32), asm)
+		} else if uint64(v)&0xffff000000000000 == uint64(v) {
+			zRI(op_LLIHH, uint32(p.To.Reg), uint32(v>>48), asm)
+		} else if int64(int32(v)) == v {
+			zRIL(_a, op_LGFI, uint32(p.To.Reg), uint32(v), asm)
+		} else if int64(uint32(v)) == v {
+			zRIL(_a, op_LLILF, uint32(p.To.Reg), uint32(v), asm)
+		} else if uint64(v)&0xffffffff00000000 == uint64(v) {
+			zRIL(_a, op_LLIHF, uint32(p.To.Reg), uint32(v>>32), asm)
+		} else {
+			zRIL(_a, op_LLILF, uint32(p.To.Reg), uint32(v), asm)
+			zRIL(_a, op_IIHF, uint32(p.To.Reg), uint32(v>>32), asm)
+		}
+
+	case 4: // multiply high (a*b)>>64
+		r := p.Reg
+		if r == 0 {
+			r = p.To.Reg
+		}
+		zRRE(op_LGR, REGTMP2, uint32(r), asm)
+		zRRE(op_MLGR, REGTMP, uint32(p.From.Reg), asm)
+		switch p.As {
+		case AMULHDU:
+			// Unsigned: move result into correct register.
+			zRRE(op_LGR, uint32(p.To.Reg), REGTMP, asm)
+		case AMULHD:
+			// Signed: need to convert result.
+			// See Hacker's Delight 8-3.
+			zRSY(op_SRAG, REGTMP2, uint32(p.From.Reg), 0, 63, asm)
+			zRRE(op_NGR, REGTMP2, uint32(r), asm)
+			zRRE(op_SGR, REGTMP, REGTMP2, asm)
+			zRSY(op_SRAG, REGTMP2, uint32(r), 0, 63, asm)
+			zRRE(op_NGR, REGTMP2, uint32(p.From.Reg), asm)
+			zRRF(op_SGRK, REGTMP2, 0, uint32(p.To.Reg), REGTMP, asm)
+		}
+
+	case 5: // syscall
+		zI(op_SVC, 0, asm)
+
+	case 6: // logical op reg [reg] reg
+		var oprr, oprre, oprrf uint32
+		switch p.As {
+		case AAND:
+			oprre = op_NGR
+			oprrf = op_NGRK
+		case AANDW:
+			oprr = op_NR
+			oprrf = op_NRK
+		case AOR:
+			oprre = op_OGR
+			oprrf = op_OGRK
+		case AORW:
+			oprr = op_OR
+			oprrf = op_ORK
+		case AXOR:
+			oprre = op_XGR
+			oprrf = op_XGRK
+		case AXORW:
+			oprr = op_XR
+			oprrf = op_XRK
+		}
+		if p.Reg == 0 {
+			if oprr != 0 {
+				zRR(oprr, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else {
+				zRRE(oprre, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			}
+		} else {
+			zRRF(oprrf, uint32(p.Reg), 0, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		}
+
+	case 7: // shift/rotate reg [reg] reg
+		d2 := vregoff(ctxt, &p.From)
+		b2 := p.From.Reg
+		r3 := p.Reg
+		if r3 == 0 {
+			r3 = p.To.Reg
+		}
+		r1 := p.To.Reg
+		var opcode uint32
+		switch p.As {
+		default:
+		case ASLD:
+			opcode = op_SLLG
+		case ASRD:
+			opcode = op_SRLG
+		case ASLW:
+			opcode = op_SLLK
+		case ASRW:
+			opcode = op_SRLK
+		case ARLL:
+			opcode = op_RLL
+		case ARLLG:
+			opcode = op_RLLG
+		case ASRAW:
+			opcode = op_SRAK
+		case ASRAD:
+			opcode = op_SRAG
+		}
+		zRSY(opcode, uint32(r1), uint32(r3), uint32(b2), uint32(d2), asm)
+
+	case 8: // find leftmost one
+		if p.To.Reg&1 != 0 {
+			ctxt.Diag("target must be an even-numbered register")
+		}
+		// FLOGR also writes a mask to p.To.Reg+1.
+		zRRE(op_FLOGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+
+	case 10: // subtract reg [reg] reg
+		r := int(p.Reg)
+
+		switch p.As {
+		default:
+		case ASUB:
+			if r == 0 {
+				zRRE(op_SGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else {
+				zRRF(op_SGRK, uint32(p.From.Reg), 0, uint32(p.To.Reg), uint32(r), asm)
+			}
+		case ASUBC:
+			if r == 0 {
+				zRRE(op_SLGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else {
+				zRRF(op_SLGRK, uint32(p.From.Reg), 0, uint32(p.To.Reg), uint32(r), asm)
+			}
+		case ASUBE:
+			if r == 0 {
+				r = int(p.To.Reg)
+			}
+			if r == int(p.To.Reg) {
+				zRRE(op_SLBGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else if p.From.Reg == p.To.Reg {
+				zRRE(op_LGR, REGTMP, uint32(p.From.Reg), asm)
+				zRRE(op_LGR, uint32(p.To.Reg), uint32(r), asm)
+				zRRE(op_SLBGR, uint32(p.To.Reg), REGTMP, asm)
+			} else {
+				zRRE(op_LGR, uint32(p.To.Reg), uint32(r), asm)
+				zRRE(op_SLBGR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			}
+		case ASUBW:
+			if r == 0 {
+				zRR(op_SR, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+			} else {
+				zRRF(op_SRK, uint32(p.From.Reg), 0, uint32(p.To.Reg), uint32(r), asm)
+			}
+		}
+
+	case 11: // br/bl
+		v := int32(0)
+
+		if p.Pcond != nil {
+			v = int32((p.Pcond.Pc - p.Pc) >> 1)
+		}
+
+		if p.As == ABR && p.To.Sym == nil && int32(int16(v)) == v {
+			zRI(op_BRC, 0xF, uint32(v), asm)
+		} else {
+			if p.As == ABL {
+				zRIL(_b, op_BRASL, uint32(REG_LR), uint32(v), asm)
+			} else {
+				zRIL(_c, op_BRCL, 0xF, uint32(v), asm)
+			}
+			if p.To.Sym != nil {
+				addcallreloc(ctxt, p.To.Sym, p.To.Offset)
+			}
+		}
+
+	case 12:
+		r1 := p.To.Reg
+		d2 := vregoff(ctxt, &p.From)
+		b2 := p.From.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		x2 := p.From.Index
+		if -DISP20/2 > d2 || d2 >= DISP20/2 {
+			zRIL(_a, op_LGFI, REGTMP, uint32(d2), asm)
+			if x2 != 0 {
+				zRX(op_LA, REGTMP, REGTMP, uint32(x2), 0, asm)
+			}
+			x2 = REGTMP
+			d2 = 0
+		}
+		var opx, opxy uint32
+		switch p.As {
+		case AADD:
+			opxy = op_AG
+		case AADDC:
+			opxy = op_ALG
+		case AADDW:
+			opx = op_A
+			opxy = op_AY
+		case AMULLW:
+			opx = op_MS
+			opxy = op_MSY
+		case AMULLD:
+			opxy = op_MSG
+		case ASUB:
+			opxy = op_SG
+		case ASUBC:
+			opxy = op_SLG
+		case ASUBE:
+			opxy = op_SLBG
+		case ASUBW:
+			opx = op_S
+			opxy = op_SY
+		case AAND:
+			opxy = op_NG
+		case AANDW:
+			opx = op_N
+			opxy = op_NY
+		case AOR:
+			opxy = op_OG
+		case AORW:
+			opx = op_O
+			opxy = op_OY
+		case AXOR:
+			opxy = op_XG
+		case AXORW:
+			opx = op_X
+			opxy = op_XY
+		}
+		if opx != 0 && 0 <= d2 && d2 < DISP12 {
+			zRX(opx, uint32(r1), uint32(x2), uint32(b2), uint32(d2), asm)
+		} else {
+			zRXY(opxy, uint32(r1), uint32(x2), uint32(b2), uint32(d2), asm)
+		}
+
+	case 15: // br/bl (reg)
+		r := p.To.Reg
+		if p.As == ABCL || p.As == ABL {
+			zRR(op_BASR, uint32(REG_LR), uint32(r), asm)
+		} else {
+			zRR(op_BCR, 0xF, uint32(r), asm)
+		}
+
+	case 16: // conditional branch
+		v := int32(0)
+		if p.Pcond != nil {
+			v = int32((p.Pcond.Pc - p.Pc) >> 1)
+		}
+		mask := branchMask(ctxt, p)
+		if p.To.Sym == nil && int32(int16(v)) == v {
+			zRI(op_BRC, mask, uint32(v), asm)
+		} else {
+			zRIL(_c, op_BRCL, mask, uint32(v), asm)
+		}
+		if p.To.Sym != nil {
+			addrilreloc(ctxt, p.To.Sym, p.To.Offset)
+		}
+
+	case 17: // move on condition
+		m3 := branchMask(ctxt, p)
+		zRRF(op_LOCGR, m3, 0, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+
+	case 18: // br/bl reg
+		if p.As == ABL {
+			zRR(op_BASR, uint32(REG_LR), uint32(p.To.Reg), asm)
+		} else {
+			zRR(op_BCR, 0xF, uint32(p.To.Reg), asm)
+		}
+
+	case 19: // mov $sym+n(SB) reg
+		d := vregoff(ctxt, &p.From)
+		zRIL(_b, op_LARL, uint32(p.To.Reg), 0, asm)
+		if d&1 != 0 {
+			zRX(op_LA, uint32(p.To.Reg), uint32(p.To.Reg), 0, 1, asm)
+			d -= 1
+		}
+		addrilreloc(ctxt, p.From.Sym, d)
+
+	case 21: // subtract $constant [reg] reg
+		v := vregoff(ctxt, &p.From)
+		r := p.Reg
+		if r == 0 {
+			r = p.To.Reg
+		}
+		switch p.As {
+		case ASUB:
+			zRIL(_a, op_LGFI, uint32(REGTMP), uint32(v), asm)
+			zRRF(op_SLGRK, uint32(REGTMP), 0, uint32(p.To.Reg), uint32(r), asm)
+		case ASUBC:
+			if r != p.To.Reg {
+				zRRE(op_LGR, uint32(p.To.Reg), uint32(r), asm)
+			}
+			zRIL(_a, op_SLGFI, uint32(p.To.Reg), uint32(v), asm)
+		case ASUBW:
+			if r != p.To.Reg {
+				zRR(op_LR, uint32(p.To.Reg), uint32(r), asm)
+			}
+			zRIL(_a, op_SLFI, uint32(p.To.Reg), uint32(v), asm)
+		}
+
+	case 22: // add/multiply $constant [reg] reg
+		v := vregoff(ctxt, &p.From)
+		r := p.Reg
+		if r == 0 {
+			r = p.To.Reg
+		}
+		var opri, opril, oprie uint32
+		switch p.As {
+		case AADD:
+			opri = op_AGHI
+			opril = op_AGFI
+			oprie = op_AGHIK
+		case AADDC:
+			opril = op_ALGFI
+			oprie = op_ALGHSIK
+		case AADDW:
+			opri = op_AHI
+			opril = op_AFI
+			oprie = op_AHIK
+		case AMULLW:
+			opri = op_MHI
+			opril = op_MSFI
+		case AMULLD:
+			opri = op_MGHI
+			opril = op_MSGFI
+		}
+		if r != p.To.Reg && (oprie == 0 || int64(int16(v)) != v) {
+			switch p.As {
+			case AADD, AADDC, AMULLD:
+				zRRE(op_LGR, uint32(p.To.Reg), uint32(r), asm)
+			case AADDW, AMULLW:
+				zRR(op_LR, uint32(p.To.Reg), uint32(r), asm)
+			}
+			r = p.To.Reg
+		}
+		if r == p.To.Reg {
+			if opri != 0 && int64(int16(v)) == v {
+				zRI(opri, uint32(p.To.Reg), uint32(v), asm)
+			} else {
+				zRIL(_a, opril, uint32(p.To.Reg), uint32(v), asm)
+			}
+		} else {
+			zRIE(_d, oprie, uint32(p.To.Reg), uint32(r), uint32(v), 0, 0, 0, 0, asm)
+		}
+
+	case 23: // 64-bit logical op $constant reg
+		// TODO(mundaym): merge with case 24.
+		v := vregoff(ctxt, &p.From)
+		switch p.As {
+		default:
+			ctxt.Diag("%v is not supported", p)
+		case AAND:
+			if v >= 0 { // needs zero extend
+				zRIL(_a, op_LGFI, REGTMP, uint32(v), asm)
+				zRRE(op_NGR, uint32(p.To.Reg), REGTMP, asm)
+			} else if int64(int16(v)) == v {
+				zRI(op_NILL, uint32(p.To.Reg), uint32(v), asm)
+			} else { //  r.To.Reg & 0xffffffff00000000 & uint32(v)
+				zRIL(_a, op_NILF, uint32(p.To.Reg), uint32(v), asm)
+			}
+		case AOR:
+			if int64(uint32(v)) != v { // needs sign extend
+				zRIL(_a, op_LGFI, REGTMP, uint32(v), asm)
+				zRRE(op_OGR, uint32(p.To.Reg), REGTMP, asm)
+			} else if int64(uint16(v)) == v {
+				zRI(op_OILL, uint32(p.To.Reg), uint32(v), asm)
+			} else {
+				zRIL(_a, op_OILF, uint32(p.To.Reg), uint32(v), asm)
+			}
+		case AXOR:
+			if int64(uint32(v)) != v { // needs sign extend
+				zRIL(_a, op_LGFI, REGTMP, uint32(v), asm)
+				zRRE(op_XGR, uint32(p.To.Reg), REGTMP, asm)
+			} else {
+				zRIL(_a, op_XILF, uint32(p.To.Reg), uint32(v), asm)
+			}
+		}
+
+	case 24: // 32-bit logical op $constant reg
+		v := vregoff(ctxt, &p.From)
+		switch p.As {
+		case AANDW:
+			if uint32(v&0xffff0000) == 0xffff0000 {
+				zRI(op_NILL, uint32(p.To.Reg), uint32(v), asm)
+			} else if uint32(v&0x0000ffff) == 0x0000ffff {
+				zRI(op_NILH, uint32(p.To.Reg), uint32(v)>>16, asm)
+			} else {
+				zRIL(_a, op_NILF, uint32(p.To.Reg), uint32(v), asm)
+			}
+		case AORW:
+			if uint32(v&0xffff0000) == 0 {
+				zRI(op_OILL, uint32(p.To.Reg), uint32(v), asm)
+			} else if uint32(v&0x0000ffff) == 0 {
+				zRI(op_OILH, uint32(p.To.Reg), uint32(v)>>16, asm)
+			} else {
+				zRIL(_a, op_OILF, uint32(p.To.Reg), uint32(v), asm)
+			}
+		case AXORW:
+			zRIL(_a, op_XILF, uint32(p.To.Reg), uint32(v), asm)
+		}
+
+	case 26: // MOVD $offset(base)(index), reg
+		v := regoff(ctxt, &p.From)
+		r := p.From.Reg
+		if r == 0 {
+			r = o.param
+		}
+		i := p.From.Index
+		if v >= 0 && v < DISP12 {
+			zRX(op_LA, uint32(p.To.Reg), uint32(r), uint32(i), uint32(v), asm)
+		} else if v >= -DISP20/2 && v < DISP20/2 {
+			zRXY(op_LAY, uint32(p.To.Reg), uint32(r), uint32(i), uint32(v), asm)
+		} else {
+			zRIL(_a, op_LGFI, REGTMP, uint32(v), asm)
+			zRX(op_LA, uint32(p.To.Reg), uint32(r), REGTMP, uint32(i), asm)
+		}
+
+	case 31: // dword
+		wd := uint64(vregoff(ctxt, &p.From))
+		*asm = append(*asm,
+			uint8(wd>>56),
+			uint8(wd>>48),
+			uint8(wd>>40),
+			uint8(wd>>32),
+			uint8(wd>>24),
+			uint8(wd>>16),
+			uint8(wd>>8),
+			uint8(wd))
+
+	case 32: // fmul freg [freg] freg
+		r := int(p.Reg)
+		if r == 0 {
+			r = int(p.To.Reg)
+		}
+
+		var opcode uint32
+
+		switch p.As {
+		default:
+			ctxt.Diag("invalid opcode")
+		case AFMUL:
+			opcode = op_MDBR
+		case AFMULS:
+			opcode = op_MEEBR
+		}
+
+		if r == int(p.To.Reg) {
+			zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		} else if p.From.Reg == p.To.Reg {
+			zRRE(opcode, uint32(p.To.Reg), uint32(r), asm)
+		} else {
+			zRR(op_LDR, uint32(p.To.Reg), uint32(r), asm)
+			zRRE(opcode, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+		}
+
+	case 33: // float op [freg] freg
+		r := p.From.Reg
+		if oclass(&p.From) == C_NONE {
+			r = p.To.Reg
+		}
+		var opcode uint32
+		switch p.As {
+		default:
+		case AFABS:
+			opcode = op_LPDBR
+		case AFNABS:
+			opcode = op_LNDBR
+		case AFNEG:
+			opcode = op_LCDFR
+		case AFNEGS:
+			opcode = op_LCEBR
+		case ALEDBR:
+			opcode = op_LEDBR
+		case ALDEBR:
+			opcode = op_LDEBR
+		case AFSQRT:
+			opcode = op_SQDBR
+		case AFSQRTS:
+			opcode = op_SQEBR
+		}
+		zRRE(opcode, uint32(p.To.Reg), uint32(r), asm)
+
+	case 34: // float multiply-add freg freg freg freg
+		var opcode uint32
+
+		switch p.As {
+		default:
+			ctxt.Diag("invalid opcode")
+		case AFMADD:
+			opcode = op_MADBR
+		case AFMADDS:
+			opcode = op_MAEBR
+		case AFMSUB:
+			opcode = op_MSDBR
+		case AFMSUBS:
+			opcode = op_MSEBR
+		case AFNMADD:
+			opcode = op_MADBR
+		case AFNMADDS:
+			opcode = op_MAEBR
+		case AFNMSUB:
+			opcode = op_MSDBR
+		case AFNMSUBS:
+			opcode = op_MSEBR
+		}
+
+		zRR(op_LDR, uint32(p.To.Reg), uint32(p.Reg), asm)
+		zRRD(opcode, uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.From3.Reg), asm)
+
+		if p.As == AFNMADD || p.As == AFNMADDS || p.As == AFNMSUB || p.As == AFNMSUBS {
+			zRRE(op_LCDFR, uint32(p.To.Reg), uint32(p.To.Reg), asm)
+		}
+
+	case 35: // mov reg mem (no relocation)
+		d2 := regoff(ctxt, &p.To)
+		b2 := p.To.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		x2 := p.To.Index
+		if d2 < -DISP20/2 || d2 >= DISP20/2 {
+			zRIL(_a, op_LGFI, REGTMP, uint32(d2), asm)
+			if x2 != 0 {
+				zRX(op_LA, REGTMP, REGTMP, uint32(x2), 0, asm)
+			}
+			x2 = REGTMP
+			d2 = 0
+		}
+		zRXY(zopstore(ctxt, p.As), uint32(p.From.Reg), uint32(x2), uint32(b2), uint32(d2), asm)
+
+	case 36: // mov mem reg (no relocation)
+		d2 := regoff(ctxt, &p.From)
+		b2 := p.From.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		x2 := p.From.Index
+		if d2 < -DISP20/2 || d2 >= DISP20/2 {
+			zRIL(_a, op_LGFI, REGTMP, uint32(d2), asm)
+			if x2 != 0 {
+				zRX(op_LA, REGTMP, REGTMP, uint32(x2), 0, asm)
+			}
+			x2 = REGTMP
+			d2 = 0
+		}
+		zRXY(zopload(ctxt, p.As), uint32(p.To.Reg), uint32(x2), uint32(b2), uint32(d2), asm)
+
+	case 40: // word/byte
+		wd := uint32(regoff(ctxt, &p.From))
+		if p.As == AWORD { //WORD
+			*asm = append(*asm, uint8(wd>>24), uint8(wd>>16), uint8(wd>>8), uint8(wd))
+		} else { //BYTE
+			*asm = append(*asm, uint8(wd))
+		}
+
+	case 47: // negate [reg] reg
+		r := p.From.Reg
+		if r == 0 {
+			r = p.To.Reg
+		}
+		switch p.As {
+		case ANEG:
+			zRRE(op_LCGR, uint32(p.To.Reg), uint32(r), asm)
+		case ANEGW:
+			zRRE(op_LCGFR, uint32(p.To.Reg), uint32(r), asm)
+		}
+
+	case 48: // floating-point round to integer
+		m3 := vregoff(ctxt, &p.From)
+		if 0 > m3 || m3 > 7 {
+			ctxt.Diag("mask (%v) must be in the range [0, 7]", m3)
+		}
+		var opcode uint32
+		switch p.As {
+		case AFIEBR:
+			opcode = op_FIEBR
+		case AFIDBR:
+			opcode = op_FIDBR
+		}
+		zRRF(opcode, uint32(m3), 0, uint32(p.To.Reg), uint32(p.Reg), asm)
+
+	case 67: // fmov $0 freg
+		var opcode uint32
+		switch p.As {
+		case AFMOVS:
+			opcode = op_LZER
+		case AFMOVD:
+			opcode = op_LZDR
+		}
+		zRRE(opcode, uint32(p.To.Reg), 0, asm)
+
+	case 68: // movw areg reg
+		zRRE(op_EAR, uint32(p.To.Reg), uint32(p.From.Reg-REG_AR0), asm)
+
+	case 69: // movw reg areg
+		zRRE(op_SAR, uint32(p.To.Reg-REG_AR0), uint32(p.From.Reg), asm)
+
+	case 70: // cmp reg reg
+		if p.As == ACMPW || p.As == ACMPWU {
+			zRR(zoprr(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Reg), asm)
+		} else {
+			zRRE(zoprre(ctxt, p.As), uint32(p.From.Reg), uint32(p.To.Reg), asm)
+		}
+
+	case 71: // cmp reg $constant
+		v := vregoff(ctxt, &p.To)
+		switch p.As {
+		case ACMP, ACMPW:
+			if int64(int32(v)) != v {
+				ctxt.Diag("%v overflows an int32", v)
+			}
+		case ACMPU, ACMPWU:
+			if int64(uint32(v)) != v {
+				ctxt.Diag("%v overflows a uint32", v)
+			}
+		}
+		if p.As == ACMP && int64(int16(v)) == v {
+			zRI(op_CGHI, uint32(p.From.Reg), uint32(v), asm)
+		} else if p.As == ACMPW && int64(int16(v)) == v {
+			zRI(op_CHI, uint32(p.From.Reg), uint32(v), asm)
+		} else {
+			zRIL(_a, zopril(ctxt, p.As), uint32(p.From.Reg), uint32(v), asm)
+		}
+
+	case 72: // mov $constant mem
+		v := regoff(ctxt, &p.From)
+		d := regoff(ctxt, &p.To)
+		r := p.To.Reg
+		x := p.To.Index
+		if r == 0 {
+			r = o.param
+		}
+		if int32(int16(v)) == v && x == 0 {
+			if d < 0 || d >= DISP12 {
+				if r == REGTMP || r == REGTMP2 {
+					zRIL(_a, op_AGFI, uint32(r), uint32(d), asm)
+				} else {
+					zRIL(_a, op_LGFI, REGTMP, uint32(d), asm)
+					zRRE(op_AGR, REGTMP, uint32(r), asm)
+					r = REGTMP
+				}
+				d = 0
+			}
+			var opcode uint32
+			switch p.As {
+			case AMOVD:
+				opcode = op_MVGHI
+			case AMOVW, AMOVWZ:
+				opcode = op_MVHI
+			case AMOVH, AMOVHZ:
+				opcode = op_MVHHI
+			case AMOVB, AMOVBZ:
+				opcode = op_MVI
+			}
+			if opcode == op_MVI {
+				zSI(opcode, uint32(v), uint32(r), uint32(d), asm)
+			} else {
+				zSIL(opcode, uint32(r), uint32(d), uint32(v), asm)
+			}
+		} else {
+			zRIL(_a, op_LGFI, REGTMP2, uint32(v), asm)
+			if d < -DISP20/2 || d >= DISP20/2 {
+				if r == REGTMP {
+					zRIL(_a, op_AGFI, REGTMP, uint32(d), asm)
+				} else {
+					zRIL(_a, op_LGFI, REGTMP, uint32(d), asm)
+					if x != 0 {
+						zRRE(op_AGR, REGTMP, uint32(x), asm)
+					}
+					x = REGTMP
+				}
+				d = 0
+			}
+			zRXY(zopstore(ctxt, p.As), REGTMP2, uint32(x), uint32(r), uint32(d), asm)
+		}
+
+	case 73: // mov $constant addr (including relocation)
+		v := regoff(ctxt, &p.From)
+		d := regoff(ctxt, &p.To)
+		a := uint32(0)
+		if d&1 != 0 {
+			d -= 1
+			a = 1
+		}
+		zRIL(_b, op_LARL, REGTMP, uint32(d), asm)
+		addrilreloc(ctxt, p.To.Sym, int64(d))
+		if int32(int16(v)) == v {
+			var opcode uint32
+			switch p.As {
+			case AMOVD:
+				opcode = op_MVGHI
+			case AMOVW, AMOVWZ:
+				opcode = op_MVHI
+			case AMOVH, AMOVHZ:
+				opcode = op_MVHHI
+			case AMOVB, AMOVBZ:
+				opcode = op_MVI
+			}
+			if opcode == op_MVI {
+				zSI(opcode, uint32(v), REGTMP, a, asm)
+			} else {
+				zSIL(opcode, REGTMP, a, uint32(v), asm)
+			}
+		} else {
+			zRIL(_a, op_LGFI, REGTMP2, uint32(v), asm)
+			zRXY(zopstore(ctxt, p.As), REGTMP2, 0, REGTMP, a, asm)
+		}
+
+	case 74: // mov reg addr (including relocation)
+		i2 := regoff(ctxt, &p.To)
+		switch p.As {
+		case AMOVD:
+			zRIL(_b, op_STGRL, uint32(p.From.Reg), 0, asm)
+		case AMOVW, AMOVWZ: // The zero extension doesn't affect store instructions
+			zRIL(_b, op_STRL, uint32(p.From.Reg), 0, asm)
+		case AMOVH, AMOVHZ: // The zero extension doesn't affect store instructions
+			zRIL(_b, op_STHRL, uint32(p.From.Reg), 0, asm)
+		case AMOVB, AMOVBZ: // The zero extension doesn't affect store instructions
+			zRIL(_b, op_LARL, REGTMP, 0, asm)
+			adj := uint32(0) // adjustment needed for odd addresses
+			if i2&1 != 0 {
+				i2 -= 1
+				adj = 1
+			}
+			zRX(op_STC, uint32(p.From.Reg), 0, REGTMP, adj, asm)
+		case AFMOVD:
+			zRIL(_b, op_LARL, REGTMP, 0, asm)
+			zRX(op_STD, uint32(p.From.Reg), 0, REGTMP, 0, asm)
+		case AFMOVS:
+			zRIL(_b, op_LARL, REGTMP, 0, asm)
+			zRX(op_STE, uint32(p.From.Reg), 0, REGTMP, 0, asm)
+		}
+		addrilreloc(ctxt, p.To.Sym, int64(i2))
+
+	case 75: // mov addr reg (including relocation)
+		i2 := regoff(ctxt, &p.From)
+		switch p.As {
+		case AMOVD:
+			if i2&1 != 0 {
+				zRIL(_b, op_LARL, REGTMP, 0, asm)
+				zRXY(op_LG, uint32(p.To.Reg), REGTMP, 0, 1, asm)
+				i2 -= 1
+			} else {
+				zRIL(_b, op_LGRL, uint32(p.To.Reg), 0, asm)
+			}
+		case AMOVW:
+			zRIL(_b, op_LGFRL, uint32(p.To.Reg), 0, asm)
+		case AMOVWZ:
+			zRIL(_b, op_LLGFRL, uint32(p.To.Reg), 0, asm)
+		case AMOVH:
+			zRIL(_b, op_LGHRL, uint32(p.To.Reg), 0, asm)
+		case AMOVHZ:
+			zRIL(_b, op_LLGHRL, uint32(p.To.Reg), 0, asm)
+		case AMOVB, AMOVBZ:
+			zRIL(_b, op_LARL, REGTMP, 0, asm)
+			adj := uint32(0) // adjustment needed for odd addresses
+			if i2&1 != 0 {
+				i2 -= 1
+				adj = 1
+			}
+			switch p.As {
+			case AMOVB:
+				zRXY(op_LGB, uint32(p.To.Reg), 0, REGTMP, adj, asm)
+			case AMOVBZ:
+				zRXY(op_LLGC, uint32(p.To.Reg), 0, REGTMP, adj, asm)
+			}
+		case AFMOVD:
+			zRIL(_a, op_LARL, REGTMP, 0, asm)
+			zRX(op_LD, uint32(p.To.Reg), 0, REGTMP, 0, asm)
+		case AFMOVS:
+			zRIL(_a, op_LARL, REGTMP, 0, asm)
+			zRX(op_LE, uint32(p.To.Reg), 0, REGTMP, 0, asm)
+		}
+		addrilreloc(ctxt, p.From.Sym, int64(i2))
+
+	case 77: // syscall $constant
+		if p.From.Offset > 255 || p.From.Offset < 1 {
+			ctxt.Diag("illegal system call; system call number out of range: %v", p)
+			zE(op_TRAP2, asm) // trap always
+		} else {
+			zI(op_SVC, uint32(p.From.Offset), asm)
+		}
+
+	case 78: // undef
+		// "An instruction consisting entirely of binary 0s is guaranteed
+		// always to be an illegal instruction."
+		*asm = append(*asm, 0, 0, 0, 0)
+
+	case 79: // compare and swap reg reg reg
+		v := regoff(ctxt, &p.To)
+		if v < 0 {
+			v = 0
+		}
+		if p.As == ACS {
+			zRS(op_CS, uint32(p.From.Reg), uint32(p.Reg), uint32(p.To.Reg), uint32(v), asm)
+		} else if p.As == ACSG {
+			zRSY(op_CSG, uint32(p.From.Reg), uint32(p.Reg), uint32(p.To.Reg), uint32(v), asm)
+		}
+
+	case 81: // sync
+		zRR(op_BCR, 0xE, 0, asm)
+
+	case 82: // fixed to float conversion
+		var opcode uint32
+		switch p.As {
+		default:
+			log.Fatalf("unexpected opcode %v", p.As)
+		case ACEFBRA:
+			opcode = op_CEFBRA
+		case ACDFBRA:
+			opcode = op_CDFBRA
+		case ACEGBRA:
+			opcode = op_CEGBRA
+		case ACDGBRA:
+			opcode = op_CDGBRA
+		case ACELFBR:
+			opcode = op_CELFBR
+		case ACDLFBR:
+			opcode = op_CDLFBR
+		case ACELGBR:
+			opcode = op_CELGBR
+		case ACDLGBR:
+			opcode = op_CDLGBR
+		}
+		// set immediate operand M3 to 0 to use the default BFP rounding mode
+		// (usually round to nearest, ties to even)
+		// TODO(mundaym): should this be fixed at round to nearest, ties to even?
+		// M4 is reserved and must be 0
+		zRRF(opcode, 0, 0, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+
+	case 83: // float to fixed conversion
+		var opcode uint32
+		switch p.As {
+		default:
+			log.Fatalf("unexpected opcode %v", p.As)
+		case ACFEBRA:
+			opcode = op_CFEBRA
+		case ACFDBRA:
+			opcode = op_CFDBRA
+		case ACGEBRA:
+			opcode = op_CGEBRA
+		case ACGDBRA:
+			opcode = op_CGDBRA
+		case ACLFEBR:
+			opcode = op_CLFEBR
+		case ACLFDBR:
+			opcode = op_CLFDBR
+		case ACLGEBR:
+			opcode = op_CLGEBR
+		case ACLGDBR:
+			opcode = op_CLGDBR
+		}
+		// set immediate operand M3 to 5 for rounding toward zero (required by Go spec)
+		// M4 is reserved and must be 0
+		zRRF(opcode, 5, 0, uint32(p.To.Reg), uint32(p.From.Reg), asm)
+
+	case 84: // storage-and-storage operations $length mem mem (length in From3)
+		l := regoff(ctxt, p.From3)
+		if l < 1 || l > 256 {
+			ctxt.Diag("number of bytes (%v) not in range [1,256]", l)
+		}
+		if p.From.Index != 0 || p.To.Index != 0 {
+			ctxt.Diag("cannot use index reg")
+		}
+		b1 := p.To.Reg
+		b2 := p.From.Reg
+		if b1 == 0 {
+			b1 = o.param
+		}
+		if b2 == 0 {
+			b2 = o.param
+		}
+		d1 := regoff(ctxt, &p.To)
+		d2 := regoff(ctxt, &p.From)
+		if d1 < 0 || d1 >= DISP12 {
+			if b2 == REGTMP {
+				ctxt.Diag("REGTMP conflict")
+			}
+			if b1 != REGTMP {
+				zRRE(op_LGR, REGTMP, uint32(b1), asm)
+			}
+			zRIL(_a, op_AGFI, REGTMP, uint32(d1), asm)
+			if d1 == d2 && b1 == b2 {
+				d2 = 0
+				b2 = REGTMP
+			}
+			d1 = 0
+			b1 = REGTMP
+		}
+		if d2 < 0 || d2 >= DISP12 {
+			if b1 == REGTMP2 {
+				ctxt.Diag("REGTMP2 conflict")
+			}
+			if b2 != REGTMP2 {
+				zRRE(op_LGR, REGTMP2, uint32(b2), asm)
+			}
+			zRIL(_a, op_AGFI, REGTMP2, uint32(d2), asm)
+			d2 = 0
+			b2 = REGTMP2
+		}
+		var opcode uint32
+		switch p.As {
+		default:
+			ctxt.Diag("unexpected opcode %v", p.As)
+		case AMVC:
+			opcode = op_MVC
+		case ACLC:
+			opcode = op_CLC
+			// swap operand order for CLC so that it matches CMP
+			b1, b2 = b2, b1
+			d1, d2 = d2, d1
+		case AXC:
+			opcode = op_XC
+		case AOC:
+			opcode = op_OC
+		case ANC:
+			opcode = op_NC
+		}
+		zSS(_a, opcode, uint32(l-1), 0, uint32(b1), uint32(d1), uint32(b2), uint32(d2), asm)
+
+	case 85: // load address relative long
+		v := regoff(ctxt, &p.From)
+		if p.From.Sym == nil {
+			if (v & 1) != 0 {
+				ctxt.Diag("cannot use LARL with odd offset: %v", v)
+			}
+		} else {
+			addrilreloc(ctxt, p.From.Sym, int64(v))
+			v = 0
+		}
+		zRIL(_b, op_LARL, uint32(p.To.Reg), uint32(v>>1), asm)
+
+	case 86: // load address
+		d := vregoff(ctxt, &p.From)
+		x := p.From.Index
+		b := p.From.Reg
+		if b == 0 {
+			b = o.param
+		}
+		switch p.As {
+		case ALA:
+			zRX(op_LA, uint32(p.To.Reg), uint32(x), uint32(b), uint32(d), asm)
+		case ALAY:
+			zRXY(op_LAY, uint32(p.To.Reg), uint32(x), uint32(b), uint32(d), asm)
+		}
+
+	case 87: // execute relative long
+		v := vregoff(ctxt, &p.From)
+		if p.From.Sym == nil {
+			if v&1 != 0 {
+				ctxt.Diag("cannot use EXRL with odd offset: %v", v)
+			}
+		} else {
+			addrilreloc(ctxt, p.From.Sym, v)
+			v = 0
+		}
+		zRIL(_b, op_EXRL, uint32(p.To.Reg), uint32(v>>1), asm)
+
+	case 88: // store clock
+		var opcode uint32
+		switch p.As {
+		case ASTCK:
+			opcode = op_STCK
+		case ASTCKC:
+			opcode = op_STCKC
+		case ASTCKE:
+			opcode = op_STCKE
+		case ASTCKF:
+			opcode = op_STCKF
+		}
+		v := vregoff(ctxt, &p.To)
+		r := int(p.To.Reg)
+		if r == 0 {
+			r = int(o.param)
+		}
+		zS(opcode, uint32(r), uint32(v), asm)
+
+	case 89: // compare and branch reg reg
+		var v int32
+		if p.Pcond != nil {
+			v = int32((p.Pcond.Pc - p.Pc) >> 1)
+		}
+		var opcode, opcode2 uint32
+		switch p.As {
+		case ACMPBEQ, ACMPBGE, ACMPBGT, ACMPBLE, ACMPBLT, ACMPBNE:
+			opcode = op_CGRJ
+			opcode2 = op_CGR
+		case ACMPUBEQ, ACMPUBGE, ACMPUBGT, ACMPUBLE, ACMPUBLT, ACMPUBNE:
+			opcode = op_CLGRJ
+			opcode2 = op_CLGR
+		}
+		mask := branchMask(ctxt, p)
+		if int32(int16(v)) != v {
+			zRRE(opcode2, uint32(p.From.Reg), uint32(p.Reg), asm)
+			zRIL(_c, op_BRCL, mask, uint32(v-sizeRRE/2), asm)
+		} else {
+			zRIE(_b, opcode, uint32(p.From.Reg), uint32(p.Reg), uint32(v), 0, 0, mask, 0, asm)
+		}
+
+	case 90: // compare and branch reg $constant
+		var v int32
+		if p.Pcond != nil {
+			v = int32((p.Pcond.Pc - p.Pc) >> 1)
+		}
+		var opcode, opcode2 uint32
+		switch p.As {
+		case ACMPBEQ, ACMPBGE, ACMPBGT, ACMPBLE, ACMPBLT, ACMPBNE:
+			opcode = op_CGIJ
+			opcode2 = op_CGFI
+		case ACMPUBEQ, ACMPUBGE, ACMPUBGT, ACMPUBLE, ACMPUBLT, ACMPUBNE:
+			opcode = op_CLGIJ
+			opcode2 = op_CLGFI
+		}
+		mask := branchMask(ctxt, p)
+		if int32(int16(v)) != v {
+			zRIL(_a, opcode2, uint32(p.From.Reg), uint32(regoff(ctxt, p.From3)), asm)
+			zRIL(_c, op_BRCL, mask, uint32(v-sizeRIL/2), asm)
+		} else {
+			zRIE(_c, opcode, uint32(p.From.Reg), mask, uint32(v), 0, 0, 0, uint32(regoff(ctxt, p.From3)), asm)
+		}
+
+	case 93: // GOT lookup
+		v := vregoff(ctxt, &p.To)
+		if v != 0 {
+			ctxt.Diag("invalid offset against GOT slot %v", p)
+		}
+		zRIL(_b, op_LGRL, uint32(p.To.Reg), 0, asm)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc + 2)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Type = obj.R_GOTPCREL
+		rel.Add = 2 + int64(rel.Siz)
+
+	case 94: // TLS local exec model
+		zRIL(_b, op_LARL, REGTMP, (sizeRIL+sizeRXY+sizeRI)>>1, asm)
+		zRXY(op_LG, uint32(p.To.Reg), REGTMP, 0, 0, asm)
+		zRI(op_BRC, 0xF, (sizeRI+8)>>1, asm)
+		*asm = append(*asm, 0, 0, 0, 0, 0, 0, 0, 0)
+		rel := obj.Addrel(ctxt.Cursym)
+		rel.Off = int32(ctxt.Pc + sizeRIL + sizeRXY + sizeRI)
+		rel.Siz = 8
+		rel.Sym = p.From.Sym
+		rel.Type = obj.R_TLS_LE
+		rel.Add = 0
+
+	case 95: // TLS initial exec model
+		// Assembly                   | Relocation symbol    | Done Here?
+		// --------------------------------------------------------------
+		// ear  %r11, %a0             |                      |
+		// sllg %r11, %r11, 32        |                      |
+		// ear  %r11, %a1             |                      |
+		// larl %r10, <var>@indntpoff | R_390_TLS_IEENT      | Y
+		// lg   %r10, 0(%r10)         | R_390_TLS_LOAD (tag) | Y
+		// la   %r10, 0(%r10, %r11)   |                      |
+		// --------------------------------------------------------------
+
+		// R_390_TLS_IEENT
+		zRIL(_b, op_LARL, REGTMP, 0, asm)
+		ieent := obj.Addrel(ctxt.Cursym)
+		ieent.Off = int32(ctxt.Pc + 2)
+		ieent.Siz = 4
+		ieent.Sym = p.From.Sym
+		ieent.Type = obj.R_TLS_IE
+		ieent.Add = 2 + int64(ieent.Siz)
+
+		// R_390_TLS_LOAD
+		zRXY(op_LGF, uint32(p.To.Reg), REGTMP, 0, 0, asm)
+		// TODO(mundaym): add R_390_TLS_LOAD relocation here
+		// not strictly required but might allow the linker to optimize
+
+	case 96: // clear macro
+		length := vregoff(ctxt, &p.From)
+		offset := vregoff(ctxt, &p.To)
+		reg := p.To.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		if length <= 0 {
+			ctxt.Diag("cannot CLEAR %d bytes, must be greater than 0", length)
+		}
+		for length > 0 {
+			if offset < 0 || offset >= DISP12 {
+				if offset >= -DISP20/2 && offset < DISP20/2 {
+					zRXY(op_LAY, REGTMP, uint32(reg), 0, uint32(offset), asm)
+				} else {
+					if reg != REGTMP {
+						zRRE(op_LGR, REGTMP, uint32(reg), asm)
+					}
+					zRIL(_a, op_AGFI, REGTMP, uint32(offset), asm)
+				}
+				reg = REGTMP
+				offset = 0
+			}
+			size := length
+			if size > 256 {
+				size = 256
+			}
+
+			switch size {
+			case 1:
+				zSI(op_MVI, 0, uint32(reg), uint32(offset), asm)
+			case 2:
+				zSIL(op_MVHHI, uint32(reg), uint32(offset), 0, asm)
+			case 4:
+				zSIL(op_MVHI, uint32(reg), uint32(offset), 0, asm)
+			case 8:
+				zSIL(op_MVGHI, uint32(reg), uint32(offset), 0, asm)
+			default:
+				zSS(_a, op_XC, uint32(size-1), 0, uint32(reg), uint32(offset), uint32(reg), uint32(offset), asm)
+			}
+
+			length -= size
+			offset += size
+		}
+
+	case 97: // store multiple
+		rstart := p.From.Reg
+		rend := p.Reg
+		offset := regoff(ctxt, &p.To)
+		reg := p.To.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		if offset < -DISP20/2 || offset >= DISP20/2 {
+			if reg != REGTMP {
+				zRRE(op_LGR, REGTMP, uint32(reg), asm)
+			}
+			zRIL(_a, op_AGFI, REGTMP, uint32(offset), asm)
+			reg = REGTMP
+			offset = 0
+		}
+		switch p.As {
+		case ASTMY:
+			if offset >= 0 && offset < DISP12 {
+				zRS(op_STM, uint32(rstart), uint32(rend), uint32(reg), uint32(offset), asm)
+			} else {
+				zRSY(op_STMY, uint32(rstart), uint32(rend), uint32(reg), uint32(offset), asm)
+			}
+		case ASTMG:
+			zRSY(op_STMG, uint32(rstart), uint32(rend), uint32(reg), uint32(offset), asm)
+		}
+
+	case 98: // load multiple
+		rstart := p.Reg
+		rend := p.To.Reg
+		offset := regoff(ctxt, &p.From)
+		reg := p.From.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		if offset < -DISP20/2 || offset >= DISP20/2 {
+			if reg != REGTMP {
+				zRRE(op_LGR, REGTMP, uint32(reg), asm)
+			}
+			zRIL(_a, op_AGFI, REGTMP, uint32(offset), asm)
+			reg = REGTMP
+			offset = 0
+		}
+		switch p.As {
+		case ALMY:
+			if offset >= 0 && offset < DISP12 {
+				zRS(op_LM, uint32(rstart), uint32(rend), uint32(reg), uint32(offset), asm)
+			} else {
+				zRSY(op_LMY, uint32(rstart), uint32(rend), uint32(reg), uint32(offset), asm)
+			}
+		case ALMG:
+			zRSY(op_LMG, uint32(rstart), uint32(rend), uint32(reg), uint32(offset), asm)
+		}
+
+	case 99: // interlocked load and op
+		if p.To.Index != 0 {
+			ctxt.Diag("cannot use indexed address")
+		}
+		offset := regoff(ctxt, &p.To)
+		if offset < -DISP20/2 || offset >= DISP20/2 {
+			ctxt.Diag("%v does not fit into 20-bit signed integer", offset)
+		}
+		var opcode uint32
+		switch p.As {
+		case ALAA:
+			opcode = op_LAA
+		case ALAAG:
+			opcode = op_LAAG
+		case ALAAL:
+			opcode = op_LAAL
+		case ALAALG:
+			opcode = op_LAALG
+		case ALAN:
+			opcode = op_LAN
+		case ALANG:
+			opcode = op_LANG
+		case ALAX:
+			opcode = op_LAX
+		case ALAXG:
+			opcode = op_LAXG
+		case ALAO:
+			opcode = op_LAO
+		case ALAOG:
+			opcode = op_LAOG
+		}
+		zRSY(opcode, uint32(p.Reg), uint32(p.From.Reg), uint32(p.To.Reg), uint32(offset), asm)
+
+	case 100: // VRX STORE
+		op, m3, _ := vop(p.As)
+		if p.From3 != nil {
+			m3 = uint32(vregoff(ctxt, p.From3))
+		}
+		b2 := p.To.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		d2 := uint32(vregoff(ctxt, &p.To))
+		zVRX(op, uint32(p.From.Reg), uint32(p.To.Index), uint32(b2), d2, m3, asm)
+
+	case 101: // VRX LOAD
+		op, m3, _ := vop(p.As)
+		if p.From3 != nil {
+			m3 = uint32(vregoff(ctxt, p.From3))
+		}
+		b2 := p.From.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		d2 := uint32(vregoff(ctxt, &p.From))
+		zVRX(op, uint32(p.To.Reg), uint32(p.From.Index), uint32(b2), d2, m3, asm)
+
+	case 102: // VRV SCATTER
+		op, m3, _ := vop(p.As)
+		if p.From3 != nil {
+			m3 = uint32(vregoff(ctxt, p.From3))
+		}
+		b2 := p.To.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		d2 := uint32(vregoff(ctxt, &p.To))
+		zVRV(op, uint32(p.From.Reg), uint32(p.To.Index), uint32(b2), d2, m3, asm)
+
+	case 103: // VRV GATHER
+		op, m3, _ := vop(p.As)
+		if p.From3 != nil {
+			m3 = uint32(vregoff(ctxt, p.From3))
+		}
+		b2 := p.From.Reg
+		if b2 == 0 {
+			b2 = o.param
+		}
+		d2 := uint32(vregoff(ctxt, &p.From))
+		zVRV(op, uint32(p.To.Reg), uint32(p.From.Index), uint32(b2), d2, m3, asm)
+
+	case 104: // VRS SHIFT/ROTATE and LOAD GR FROM VR ELEMENT
+		op, m4, _ := vop(p.As)
+		fr := p.Reg
+		if fr == 0 {
+			fr = p.To.Reg
+		}
+		bits := uint32(vregoff(ctxt, &p.From))
+		zVRS(op, uint32(p.To.Reg), uint32(fr), uint32(p.From.Reg), bits, m4, asm)
+
+	case 105: // VRS STORE MULTIPLE
+		op, _, _ := vop(p.As)
+		offset := uint32(vregoff(ctxt, &p.To))
+		reg := p.To.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		zVRS(op, uint32(p.From.Reg), uint32(p.Reg), uint32(reg), offset, 0, asm)
+
+	case 106: // VRS LOAD MULTIPLE
+		op, _, _ := vop(p.As)
+		offset := uint32(vregoff(ctxt, &p.From))
+		reg := p.From.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		zVRS(op, uint32(p.Reg), uint32(p.To.Reg), uint32(reg), offset, 0, asm)
+
+	case 107: // VRS STORE WITH LENGTH
+		op, _, _ := vop(p.As)
+		offset := uint32(vregoff(ctxt, &p.To))
+		reg := p.To.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		zVRS(op, uint32(p.From.Reg), uint32(p.From3.Reg), uint32(reg), offset, 0, asm)
+
+	case 108: // VRS LOAD WITH LENGTH
+		op, _, _ := vop(p.As)
+		offset := uint32(vregoff(ctxt, &p.From))
+		reg := p.From.Reg
+		if reg == 0 {
+			reg = o.param
+		}
+		zVRS(op, uint32(p.To.Reg), uint32(p.From3.Reg), uint32(reg), offset, 0, asm)
+
+	case 109: // VRI-a
+		op, _, _ := vop(p.As)
+		i2 := uint32(vregoff(ctxt, &p.From))
+		switch p.As {
+		case AVZERO:
+			i2 = 0
+		case AVONE:
+			i2 = 0xffff
+		}
+		m3 := uint32(0)
+		if p.From3 != nil {
+			m3 = uint32(vregoff(ctxt, p.From3))
+		}
+		zVRIa(op, uint32(p.To.Reg), i2, m3, asm)
+
+	case 110:
+		op, m4, _ := vop(p.As)
+		i2 := uint32(vregoff(ctxt, p.From3))
+		i3 := uint32(vregoff(ctxt, &p.From))
+		zVRIb(op, uint32(p.To.Reg), i2, i3, m4, asm)
+
+	case 111:
+		op, m4, _ := vop(p.As)
+		i2 := uint32(vregoff(ctxt, &p.From))
+		zVRIc(op, uint32(p.To.Reg), uint32(p.Reg), i2, m4, asm)
+
+	case 112:
+		op, m5, _ := vop(p.As)
+		i4 := uint32(vregoff(ctxt, p.From3))
+		zVRId(op, uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), i4, m5, asm)
+
+	case 113:
+		op, m4, _ := vop(p.As)
+		m5 := singleElementMask(p.As)
+		i3 := uint32(vregoff(ctxt, &p.From))
+		zVRIe(op, uint32(p.To.Reg), uint32(p.Reg), i3, m5, m4, asm)
+
+	case 114: // VRR-a
+		op, m3, m5 := vop(p.As)
+		m4 := singleElementMask(p.As)
+		zVRRa(op, uint32(p.To.Reg), uint32(p.From.Reg), m5, m4, m3, asm)
+
+	case 115: // VRR-a COMPARE
+		op, m3, m5 := vop(p.As)
+		m4 := singleElementMask(p.As)
+		zVRRa(op, uint32(p.From.Reg), uint32(p.To.Reg), m5, m4, m3, asm)
+
+	case 116: // VRR-a
+
+	case 117: // VRR-b
+		op, m4, m5 := vop(p.As)
+		zVRRb(op, uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), m5, m4, asm)
+
+	case 118: // VRR-c
+		op, m4, m6 := vop(p.As)
+		m5 := singleElementMask(p.As)
+		v3 := p.Reg
+		if v3 == 0 {
+			v3 = p.To.Reg
+		}
+		zVRRc(op, uint32(p.To.Reg), uint32(p.From.Reg), uint32(v3), m6, m5, m4, asm)
+
+	case 119: // VRR-c SHIFT/ROTATE/DIVIDE/SUB (rhs value on the left, like SLD, DIV etc.)
+		op, m4, m6 := vop(p.As)
+		m5 := singleElementMask(p.As)
+		v2 := p.Reg
+		if v2 == 0 {
+			v2 = p.To.Reg
+		}
+		zVRRc(op, uint32(p.To.Reg), uint32(v2), uint32(p.From.Reg), m6, m5, m4, asm)
+
+	case 120: // VRR-d
+		op, m6, _ := vop(p.As)
+		m5 := singleElementMask(p.As)
+		v1 := uint32(p.To.Reg)
+		v2 := uint32(p.From3.Reg)
+		v3 := uint32(p.From.Reg)
+		v4 := uint32(p.Reg)
+		zVRRd(op, v1, v2, v3, m6, m5, v4, asm)
+
+	case 121: // VRR-e
+		op, m6, _ := vop(p.As)
+		m5 := singleElementMask(p.As)
+		v1 := uint32(p.To.Reg)
+		v2 := uint32(p.From3.Reg)
+		v3 := uint32(p.From.Reg)
+		v4 := uint32(p.Reg)
+		zVRRe(op, v1, v2, v3, m6, m5, v4, asm)
+
+	case 122: // VRR-f LOAD VRS FROM GRS DISJOINT
+		op, _, _ := vop(p.As)
+		zVRRf(op, uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), asm)
+
+	case 123: // VPDI $m4, V2, V3, V1
+		op, _, _ := vop(p.As)
+		m4 := regoff(ctxt, p.From3)
+		zVRRc(op, uint32(p.To.Reg), uint32(p.From.Reg), uint32(p.Reg), 0, 0, uint32(m4), asm)
+	}
+}
+
+func vregoff(ctxt *obj.Link, a *obj.Addr) int64 {
+	ctxt.Instoffset = 0
+	if a != nil {
+		aclass(ctxt, a)
+	}
+	return ctxt.Instoffset
+}
+
+func regoff(ctxt *obj.Link, a *obj.Addr) int32 {
+	return int32(vregoff(ctxt, a))
+}
+
+// zopload returns the RXY op for the given load
+func zopload(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	// fixed point load
+	case AMOVD:
+		return op_LG
+	case AMOVW:
+		return op_LGF
+	case AMOVWZ:
+		return op_LLGF
+	case AMOVH:
+		return op_LGH
+	case AMOVHZ:
+		return op_LLGH
+	case AMOVB:
+		return op_LGB
+	case AMOVBZ:
+		return op_LLGC
+
+	// floating point load
+	case AFMOVD:
+		return op_LDY
+	case AFMOVS:
+		return op_LEY
+
+	// byte reversed load
+	case AMOVDBR:
+		return op_LRVG
+	case AMOVWBR:
+		return op_LRV
+	case AMOVHBR:
+		return op_LRVH
+	}
+
+	ctxt.Diag("unknown store opcode %v", a)
+	return 0
+}
+
+// zopstore returns the RXY op for the given store
+func zopstore(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	// fixed point store
+	case AMOVD:
+		return op_STG
+	case AMOVW, AMOVWZ:
+		return op_STY
+	case AMOVH, AMOVHZ:
+		return op_STHY
+	case AMOVB, AMOVBZ:
+		return op_STCY
+
+	// floating point store
+	case AFMOVD:
+		return op_STDY
+	case AFMOVS:
+		return op_STEY
+
+	// byte reversed store
+	case AMOVDBR:
+		return op_STRVG
+	case AMOVWBR:
+		return op_STRV
+	case AMOVHBR:
+		return op_STRVH
+	}
+
+	ctxt.Diag("unknown store opcode %v", a)
+	return 0
+}
+
+// zoprre returns the RRE op for the given a
+func zoprre(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ACMP:
+		return op_CGR
+	case ACMPU:
+		return op_CLGR
+	case AFCMPO: //ordered
+		return op_KDBR
+	case AFCMPU: //unordered
+		return op_CDBR
+	case ACEBR:
+		return op_CEBR
+	}
+	ctxt.Diag("unknown rre opcode %v", a)
+	return 0
+}
+
+// zoprr returns the RR op for the given a
+func zoprr(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ACMPW:
+		return op_CR
+	case ACMPWU:
+		return op_CLR
+	}
+	ctxt.Diag("unknown rr opcode %v", a)
+	return 0
+}
+
+// zopril returns the RIL op for the given a
+func zopril(ctxt *obj.Link, a obj.As) uint32 {
+	switch a {
+	case ACMP:
+		return op_CGFI
+	case ACMPU:
+		return op_CLGFI
+	case ACMPW:
+		return op_CFI
+	case ACMPWU:
+		return op_CLFI
+	}
+	ctxt.Diag("unknown ril opcode %v", a)
+	return 0
+}
+
+// z instructions sizes
+const (
+	sizeE    = 2
+	sizeI    = 2
+	sizeIE   = 4
+	sizeMII  = 6
+	sizeRI   = 4
+	sizeRI1  = 4
+	sizeRI2  = 4
+	sizeRI3  = 4
+	sizeRIE  = 6
+	sizeRIE1 = 6
+	sizeRIE2 = 6
+	sizeRIE3 = 6
+	sizeRIE4 = 6
+	sizeRIE5 = 6
+	sizeRIE6 = 6
+	sizeRIL  = 6
+	sizeRIL1 = 6
+	sizeRIL2 = 6
+	sizeRIL3 = 6
+	sizeRIS  = 6
+	sizeRR   = 2
+	sizeRRD  = 4
+	sizeRRE  = 4
+	sizeRRF  = 4
+	sizeRRF1 = 4
+	sizeRRF2 = 4
+	sizeRRF3 = 4
+	sizeRRF4 = 4
+	sizeRRF5 = 4
+	sizeRRR  = 2
+	sizeRRS  = 6
+	sizeRS   = 4
+	sizeRS1  = 4
+	sizeRS2  = 4
+	sizeRSI  = 4
+	sizeRSL  = 6
+	sizeRSY  = 6
+	sizeRSY1 = 6
+	sizeRSY2 = 6
+	sizeRX   = 4
+	sizeRX1  = 4
+	sizeRX2  = 4
+	sizeRXE  = 6
+	sizeRXF  = 6
+	sizeRXY  = 6
+	sizeRXY1 = 6
+	sizeRXY2 = 6
+	sizeS    = 4
+	sizeSI   = 4
+	sizeSIL  = 6
+	sizeSIY  = 6
+	sizeSMI  = 6
+	sizeSS   = 6
+	sizeSS1  = 6
+	sizeSS2  = 6
+	sizeSS3  = 6
+	sizeSS4  = 6
+	sizeSS5  = 6
+	sizeSS6  = 6
+	sizeSSE  = 6
+	sizeSSF  = 6
+)
+
+// instruction format variations
+type form int
+
+const (
+	_a form = iota
+	_b
+	_c
+	_d
+	_e
+	_f
+)
+
+func zE(op uint32, asm *[]byte) {
+	*asm = append(*asm, uint8(op>>8), uint8(op))
+}
+
+func zI(op, i1 uint32, asm *[]byte) {
+	*asm = append(*asm, uint8(op>>8), uint8(i1))
+}
+
+func zMII(op, m1, ri2, ri3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(m1)<<4)|uint8((ri2>>8)&0x0F),
+		uint8(ri2),
+		uint8(ri3>>16),
+		uint8(ri3>>8),
+		uint8(ri3))
+}
+
+func zRI(op, r1_m1, i2_ri2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1_m1)<<4)|(uint8(op)&0x0F),
+		uint8(i2_ri2>>8),
+		uint8(i2_ri2))
+}
+
+// Expected argument values for the instruction formats.
+//
+// Format    a1  a2   a3  a4  a5  a6  a7
+// ------------------------------------
+// a         r1,  0,  i2,  0,  0, m3,  0
+// b         r1, r2, ri4,  0,  0, m3,  0
+// c         r1, m3, ri4,  0,  0,  0, i2
+// d         r1, r3,  i2,  0,  0,  0,  0
+// e         r1, r3, ri2,  0,  0,  0,  0
+// f         r1, r2,   0, i3, i4,  0, i5
+// g         r1, m3,  i2,  0,  0,  0,  0
+func zRIE(f form, op, r1, r2_m3_r3, i2_ri4_ri2, i3, i4, m3, i2_i5 uint32, asm *[]byte) {
+	*asm = append(*asm, uint8(op>>8), uint8(r1)<<4|uint8(r2_m3_r3&0x0F))
+
+	switch f {
+	default:
+		*asm = append(*asm, uint8(i2_ri4_ri2>>8), uint8(i2_ri4_ri2))
+	case _f:
+		*asm = append(*asm, uint8(i3), uint8(i4))
+	}
+
+	switch f {
+	case _a, _b:
+		*asm = append(*asm, uint8(m3)<<4)
+	default:
+		*asm = append(*asm, uint8(i2_i5))
+	}
+
+	*asm = append(*asm, uint8(op))
+}
+
+func zRIL(f form, op, r1_m1, i2_ri2 uint32, asm *[]byte) {
+	if f == _a || f == _b {
+		r1_m1 = r1_m1 - obj.RBaseS390X // this is a register base
+	}
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1_m1)<<4)|(uint8(op)&0x0F),
+		uint8(i2_ri2>>24),
+		uint8(i2_ri2>>16),
+		uint8(i2_ri2>>8),
+		uint8(i2_ri2))
+}
+
+func zRIS(op, r1, m3, b4, d4, i2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1)<<4)|uint8(m3&0x0F),
+		(uint8(b4)<<4)|(uint8(d4>>8)&0x0F),
+		uint8(d4),
+		uint8(i2),
+		uint8(op))
+}
+
+func zRR(op, r1, r2 uint32, asm *[]byte) {
+	*asm = append(*asm, uint8(op>>8), (uint8(r1)<<4)|uint8(r2&0x0F))
+}
+
+func zRRD(op, r1, r3, r2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(op),
+		uint8(r1)<<4,
+		(uint8(r3)<<4)|uint8(r2&0x0F))
+}
+
+func zRRE(op, r1, r2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(op),
+		0,
+		(uint8(r1)<<4)|uint8(r2&0x0F))
+}
+
+func zRRF(op, r3_m3, m4, r1, r2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(op),
+		(uint8(r3_m3)<<4)|uint8(m4&0x0F),
+		(uint8(r1)<<4)|uint8(r2&0x0F))
+}
+
+func zRRS(op, r1, r2, b4, d4, m3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1)<<4)|uint8(r2&0x0F),
+		(uint8(b4)<<4)|uint8((d4>>8)&0x0F),
+		uint8(d4),
+		uint8(m3)<<4,
+		uint8(op))
+}
+
+func zRS(op, r1, r3_m3, b2, d2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1)<<4)|uint8(r3_m3&0x0F),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2))
+}
+
+func zRSI(op, r1, r3, ri2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1)<<4)|uint8(r3&0x0F),
+		uint8(ri2>>8),
+		uint8(ri2))
+}
+
+func zRSL(op, l1, b2, d2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(l1),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2),
+		uint8(op))
+}
+
+func zRSY(op, r1, r3_m3, b2, d2 uint32, asm *[]byte) {
+	dl2 := uint16(d2) & 0x0FFF
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1)<<4)|uint8(r3_m3&0x0F),
+		(uint8(b2)<<4)|(uint8(dl2>>8)&0x0F),
+		uint8(dl2),
+		uint8(d2>>12),
+		uint8(op))
+}
+
+func zRX(op, r1_m1, x2, b2, d2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1_m1)<<4)|uint8(x2&0x0F),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2))
+}
+
+func zRXE(op, r1, x2, b2, d2, m3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1)<<4)|uint8(x2&0x0F),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2),
+		uint8(m3)<<4,
+		uint8(op))
+}
+
+func zRXF(op, r3, x2, b2, d2, m1 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r3)<<4)|uint8(x2&0x0F),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2),
+		uint8(m1)<<4,
+		uint8(op))
+}
+
+func zRXY(op, r1_m1, x2, b2, d2 uint32, asm *[]byte) {
+	dl2 := uint16(d2) & 0x0FFF
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r1_m1)<<4)|uint8(x2&0x0F),
+		(uint8(b2)<<4)|(uint8(dl2>>8)&0x0F),
+		uint8(dl2),
+		uint8(d2>>12),
+		uint8(op))
+}
+
+func zS(op, b2, d2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(op),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2))
+}
+
+func zSI(op, i2, b1, d1 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(i2),
+		(uint8(b1)<<4)|uint8((d1>>8)&0x0F),
+		uint8(d1))
+}
+
+func zSIL(op, b1, d1, i2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(op),
+		(uint8(b1)<<4)|uint8((d1>>8)&0x0F),
+		uint8(d1),
+		uint8(i2>>8),
+		uint8(i2))
+}
+
+func zSIY(op, i2, b1, d1 uint32, asm *[]byte) {
+	dl1 := uint16(d1) & 0x0FFF
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(i2),
+		(uint8(b1)<<4)|(uint8(dl1>>8)&0x0F),
+		uint8(dl1),
+		uint8(d1>>12),
+		uint8(op))
+}
+
+func zSMI(op, m1, b3, d3, ri2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(m1)<<4,
+		(uint8(b3)<<4)|uint8((d3>>8)&0x0F),
+		uint8(d3),
+		uint8(ri2>>8),
+		uint8(ri2))
+}
+
+// Expected argument values for the instruction formats.
+//
+// Format    a1  a2  a3  a4  a5  a6
+// -------------------------------
+// a         l1,  0, b1, d1, b2, d2
+// b         l1, l2, b1, d1, b2, d2
+// c         l1, i3, b1, d1, b2, d2
+// d         r1, r3, b1, d1, b2, d2
+// e         r1, r3, b2, d2, b4, d4
+// f          0, l2, b1, d1, b2, d2
+func zSS(f form, op, l1_r1, l2_i3_r3, b1_b2, d1_d2, b2_b4, d2_d4 uint32, asm *[]byte) {
+	*asm = append(*asm, uint8(op>>8))
+
+	switch f {
+	case _a:
+		*asm = append(*asm, uint8(l1_r1))
+	case _b, _c, _d, _e:
+		*asm = append(*asm, (uint8(l1_r1)<<4)|uint8(l2_i3_r3&0x0F))
+	case _f:
+		*asm = append(*asm, uint8(l2_i3_r3))
+	}
+
+	*asm = append(*asm,
+		(uint8(b1_b2)<<4)|uint8((d1_d2>>8)&0x0F),
+		uint8(d1_d2),
+		(uint8(b2_b4)<<4)|uint8((d2_d4>>8)&0x0F),
+		uint8(d2_d4))
+}
+
+func zSSE(op, b1, d1, b2, d2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(op),
+		(uint8(b1)<<4)|uint8((d1>>8)&0x0F),
+		uint8(d1),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2))
+}
+
+func zSSF(op, r3, b1, d1, b2, d2 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(r3)<<4)|(uint8(op)&0x0F),
+		(uint8(b1)<<4)|uint8((d1>>8)&0x0F),
+		uint8(d1),
+		(uint8(b2)<<4)|uint8((d2>>8)&0x0F),
+		uint8(d2))
+}
+
+func rxb(va, vb, vc, vd uint32) uint8 {
+	mask := uint8(0)
+	if va >= REG_V16 && va <= REG_V31 {
+		mask |= 0x8
+	}
+	if vb >= REG_V16 && vb <= REG_V31 {
+		mask |= 0x4
+	}
+	if vc >= REG_V16 && vc <= REG_V31 {
+		mask |= 0x2
+	}
+	if vd >= REG_V16 && vd <= REG_V31 {
+		mask |= 0x1
+	}
+	return mask
+}
+
+func zVRX(op, v1, x2, b2, d2, m3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(x2)&0xf),
+		(uint8(b2)<<4)|(uint8(d2>>8)&0xf),
+		uint8(d2),
+		(uint8(m3)<<4)|rxb(v1, 0, 0, 0),
+		uint8(op))
+}
+
+func zVRV(op, v1, v2, b2, d2, m3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		(uint8(b2)<<4)|(uint8(d2>>8)&0xf),
+		uint8(d2),
+		(uint8(m3)<<4)|rxb(v1, v2, 0, 0),
+		uint8(op))
+}
+
+func zVRS(op, v1, v3_r3, b2, d2, m4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v3_r3)&0xf),
+		(uint8(b2)<<4)|(uint8(d2>>8)&0xf),
+		uint8(d2),
+		(uint8(m4)<<4)|rxb(v1, v3_r3, 0, 0),
+		uint8(op))
+}
+
+func zVRRa(op, v1, v2, m5, m4, m3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		0,
+		(uint8(m5)<<4)|(uint8(m4)&0xf),
+		(uint8(m3)<<4)|rxb(v1, v2, 0, 0),
+		uint8(op))
+}
+
+func zVRRb(op, v1, v2, v3, m5, m4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		uint8(v3)<<4,
+		uint8(m5)<<4,
+		(uint8(m4)<<4)|rxb(v1, v2, v3, 0),
+		uint8(op))
+}
+
+func zVRRc(op, v1, v2, v3, m6, m5, m4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		uint8(v3)<<4,
+		(uint8(m6)<<4)|(uint8(m5)&0xf),
+		(uint8(m4)<<4)|rxb(v1, v2, v3, 0),
+		uint8(op))
+}
+
+func zVRRd(op, v1, v2, v3, m5, m6, v4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		(uint8(v3)<<4)|(uint8(m5)&0xf),
+		uint8(m6)<<4,
+		(uint8(v4)<<4)|rxb(v1, v2, v3, v4),
+		uint8(op))
+}
+
+func zVRRe(op, v1, v2, v3, m6, m5, v4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		(uint8(v3)<<4)|(uint8(m6)&0xf),
+		uint8(m5),
+		(uint8(v4)<<4)|rxb(v1, v2, v3, v4),
+		uint8(op))
+}
+
+func zVRRf(op, v1, r2, r3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(r2)&0xf),
+		uint8(r3)<<4,
+		0,
+		rxb(v1, 0, 0, 0),
+		uint8(op))
+}
+
+func zVRIa(op, v1, i2, m3 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(v1)<<4,
+		uint8(i2>>8),
+		uint8(i2),
+		(uint8(m3)<<4)|rxb(v1, 0, 0, 0),
+		uint8(op))
+}
+
+func zVRIb(op, v1, i2, i3, m4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		uint8(v1)<<4,
+		uint8(i2),
+		uint8(i3),
+		(uint8(m4)<<4)|rxb(v1, 0, 0, 0),
+		uint8(op))
+}
+
+func zVRIc(op, v1, v3, i2, m4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v3)&0xf),
+		uint8(i2>>8),
+		uint8(i2),
+		(uint8(m4)<<4)|rxb(v1, v3, 0, 0),
+		uint8(op))
+}
+
+func zVRId(op, v1, v2, v3, i4, m5 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		uint8(v3)<<4,
+		uint8(i4),
+		(uint8(m5)<<4)|rxb(v1, v2, v3, 0),
+		uint8(op))
+}
+
+func zVRIe(op, v1, v2, i3, m5, m4 uint32, asm *[]byte) {
+	*asm = append(*asm,
+		uint8(op>>8),
+		(uint8(v1)<<4)|(uint8(v2)&0xf),
+		uint8(i3>>4),
+		(uint8(i3)<<4)|(uint8(m5)&0xf),
+		(uint8(m4)<<4)|rxb(v1, v2, 0, 0),
+		uint8(op))
+}
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/listz.go b/vendor/github.com/google/gops/internal/obj/s390x/listz.go
new file mode 100644
index 00000000..468b8588
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/listz.go
@@ -0,0 +1,74 @@
+// Based on cmd/internal/obj/ppc64/list9.go.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package s390x
+
+import (
+	"fmt"
+
+	"github.com/google/gops/internal/obj"
+)
+
+func init() {
+	obj.RegisterRegister(obj.RBaseS390X, REG_R0+1024, Rconv)
+	obj.RegisterOpcode(obj.ABaseS390X, Anames)
+}
+
+func Rconv(r int) string {
+	if r == 0 {
+		return "NONE"
+	}
+	if r == REGG {
+		// Special case.
+		return "g"
+	}
+	if REG_R0 <= r && r <= REG_R15 {
+		return fmt.Sprintf("R%d", r-REG_R0)
+	}
+	if REG_F0 <= r && r <= REG_F15 {
+		return fmt.Sprintf("F%d", r-REG_F0)
+	}
+	if REG_AR0 <= r && r <= REG_AR15 {
+		return fmt.Sprintf("AR%d", r-REG_AR0)
+	}
+	if REG_V0 <= r && r <= REG_V31 {
+		return fmt.Sprintf("V%d", r-REG_V0)
+	}
+	return fmt.Sprintf("Rgok(%d)", r-obj.RBaseS390X)
+}
+
+func DRconv(a int) string {
+	s := "C_??"
+	if a >= C_NONE && a <= C_NCLASS {
+		s = cnamesz[a]
+	}
+	var fp string
+	fp += s
+	return fp
+}
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/objz.go b/vendor/github.com/google/gops/internal/obj/s390x/objz.go
new file mode 100644
index 00000000..bbf4c35c
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/objz.go
@@ -0,0 +1,1029 @@
+// Based on cmd/internal/obj/ppc64/obj9.go.
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package s390x
+
+import (
+	"fmt"
+	"math"
+
+	"github.com/google/gops/internal/obj"
+	"github.com/google/gops/internal/sys"
+)
+
+func progedit(ctxt *obj.Link, p *obj.Prog) {
+	p.From.Class = 0
+	p.To.Class = 0
+
+	// Rewrite BR/BL to symbol as TYPE_BRANCH.
+	switch p.As {
+	case ABR,
+		ABL,
+		obj.ARET,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		if p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+	}
+
+	// Rewrite float constants to values stored in memory unless they are +0.
+	switch p.As {
+	case AFMOVS:
+		if p.From.Type == obj.TYPE_FCONST {
+			f32 := float32(p.From.Val.(float64))
+			i32 := math.Float32bits(f32)
+			if i32 == 0 { // +0
+				break
+			}
+			literal := fmt.Sprintf("$f32.%08x", i32)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 4
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+	case AFMOVD:
+		if p.From.Type == obj.TYPE_FCONST {
+			i64 := math.Float64bits(p.From.Val.(float64))
+			if i64 == 0 { // +0
+				break
+			}
+			literal := fmt.Sprintf("$f64.%016x", i64)
+			s := obj.Linklookup(ctxt, literal, 0)
+			s.Size = 8
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+		// put constants not loadable by LOAD IMMEDIATE into memory
+	case AMOVD:
+		if p.From.Type == obj.TYPE_CONST {
+			val := p.From.Offset
+			if int64(int32(val)) != val &&
+				int64(uint32(val)) != val &&
+				int64(uint64(val)&(0xffffffff<<32)) != val {
+				literal := fmt.Sprintf("$i64.%016x", uint64(p.From.Offset))
+				s := obj.Linklookup(ctxt, literal, 0)
+				s.Size = 8
+				p.From.Type = obj.TYPE_MEM
+				p.From.Sym = s
+				p.From.Sym.Set(obj.AttrLocal, true)
+				p.From.Name = obj.NAME_EXTERN
+				p.From.Offset = 0
+			}
+		}
+	}
+
+	// Rewrite SUB constants into ADD.
+	switch p.As {
+	case ASUBC:
+		if p.From.Type == obj.TYPE_CONST && isint32(-p.From.Offset) {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDC
+		}
+
+	case ASUB:
+		if p.From.Type == obj.TYPE_CONST && isint32(-p.From.Offset) {
+			p.From.Offset = -p.From.Offset
+			p.As = AADD
+		}
+	}
+
+	if ctxt.Flag_dynlink {
+		rewriteToUseGot(ctxt, p)
+	}
+}
+
+// Rewrite p, if necessary, to access global data via the global offset table.
+func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog) {
+	// At the moment EXRL instructions are not emitted by the compiler and only reference local symbols in
+	// assembly code.
+	if p.As == AEXRL {
+		return
+	}
+
+	// We only care about global data: NAME_EXTERN means a global
+	// symbol in the Go sense, and p.Sym.Local is true for a few
+	// internally defined symbols.
+	if p.From.Type == obj.TYPE_ADDR && p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		// MOVD $sym, Rx becomes MOVD sym@GOT, Rx
+		// MOVD $sym+<off>, Rx becomes MOVD sym@GOT, Rx; ADD <off>, Rx
+		if p.To.Type != obj.TYPE_REG || p.As != AMOVD {
+			ctxt.Diag("do not know how to handle LEA-type insn to non-register in %v with -dynlink", p)
+		}
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		q := p
+		if p.From.Offset != 0 {
+			q = obj.Appendp(ctxt, p)
+			q.As = AADD
+			q.From.Type = obj.TYPE_CONST
+			q.From.Offset = p.From.Offset
+			q.To = p.To
+			p.From.Offset = 0
+		}
+	}
+	if p.From3 != nil && p.From3.Name == obj.NAME_EXTERN {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	var source *obj.Addr
+	// MOVD sym, Ry becomes MOVD sym@GOT, REGTMP; MOVD (REGTMP), Ry
+	// MOVD Ry, sym becomes MOVD sym@GOT, REGTMP; MOVD Ry, (REGTMP)
+	// An addition may be inserted between the two MOVs if there is an offset.
+	if p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+			ctxt.Diag("cannot handle NAME_EXTERN on both sides in %v with -dynlink", p)
+		}
+		source = &p.From
+	} else if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+		source = &p.To
+	} else {
+		return
+	}
+	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP {
+		return
+	}
+	if source.Sym.Type == obj.STLSBSS {
+		return
+	}
+	if source.Type != obj.TYPE_MEM {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	p1 := obj.Appendp(ctxt, p)
+	p2 := obj.Appendp(ctxt, p1)
+
+	p1.As = AMOVD
+	p1.From.Type = obj.TYPE_MEM
+	p1.From.Sym = source.Sym
+	p1.From.Name = obj.NAME_GOTREF
+	p1.To.Type = obj.TYPE_REG
+	p1.To.Reg = REGTMP
+
+	p2.As = p.As
+	p2.From = p.From
+	p2.To = p.To
+	if p.From.Name == obj.NAME_EXTERN {
+		p2.From.Reg = REGTMP
+		p2.From.Name = obj.NAME_NONE
+		p2.From.Sym = nil
+	} else if p.To.Name == obj.NAME_EXTERN {
+		p2.To.Reg = REGTMP
+		p2.To.Name = obj.NAME_NONE
+		p2.To.Sym = nil
+	} else {
+		return
+	}
+	obj.Nopout(p)
+}
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
+	// TODO(minux): add morestack short-cuts with small fixed frame-size.
+	ctxt.Cursym = cursym
+
+	if cursym.Text == nil || cursym.Text.Link == nil {
+		return
+	}
+
+	p := cursym.Text
+	textstksiz := p.To.Offset
+	if textstksiz == -8 {
+		// Compatibility hack.
+		p.From3.Offset |= obj.NOFRAME
+		textstksiz = 0
+	}
+	if textstksiz%8 != 0 {
+		ctxt.Diag("frame size %d not a multiple of 8", textstksiz)
+	}
+	if p.From3.Offset&obj.NOFRAME != 0 {
+		if textstksiz != 0 {
+			ctxt.Diag("NOFRAME functions must have a frame size of 0, not %d", textstksiz)
+		}
+	}
+
+	cursym.Args = p.To.Val.(int32)
+	cursym.Locals = int32(textstksiz)
+
+	/*
+	 * find leaf subroutines
+	 * strip NOPs
+	 * expand RET
+	 * expand BECOME pseudo
+	 */
+	if ctxt.Debugvlog != 0 {
+		ctxt.Logf("%5.2f noops\n", obj.Cputime())
+	}
+
+	var q *obj.Prog
+	var q1 *obj.Prog
+	for p := cursym.Text; p != nil; p = p.Link {
+		switch p.As {
+		/* too hard, just leave alone */
+		case obj.ATEXT:
+			q = p
+
+			p.Mark |= LABEL | LEAF | SYNC
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+
+		case ASYNC,
+			AWORD:
+			q = p
+			p.Mark |= LABEL | SYNC
+			continue
+
+		case AMOVW, AMOVWZ, AMOVD:
+			q = p
+			if p.From.Reg >= REG_RESERVED || p.To.Reg >= REG_RESERVED {
+				p.Mark |= LABEL | SYNC
+			}
+			continue
+
+		case AFABS,
+			AFADD,
+			AFDIV,
+			AFMADD,
+			AFMOVD,
+			AFMOVS,
+			AFMSUB,
+			AFMUL,
+			AFNABS,
+			AFNEG,
+			AFNMADD,
+			AFNMSUB,
+			ALEDBR,
+			ALDEBR,
+			AFSUB:
+			q = p
+
+			p.Mark |= FLOAT
+			continue
+
+		case ABL,
+			ABCL,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			cursym.Text.Mark &^= LEAF
+			fallthrough
+
+		case ABC,
+			ABEQ,
+			ABGE,
+			ABGT,
+			ABLE,
+			ABLT,
+			ABLEU,
+			ABLTU,
+			ABNE,
+			ABR,
+			ABVC,
+			ABVS,
+			ACMPBEQ,
+			ACMPBGE,
+			ACMPBGT,
+			ACMPBLE,
+			ACMPBLT,
+			ACMPBNE,
+			ACMPUBEQ,
+			ACMPUBGE,
+			ACMPUBGT,
+			ACMPUBLE,
+			ACMPUBLT,
+			ACMPUBNE:
+			p.Mark |= BRANCH
+			q = p
+			q1 = p.Pcond
+			if q1 != nil {
+				for q1.As == obj.ANOP {
+					q1 = q1.Link
+					p.Pcond = q1
+				}
+
+				if q1.Mark&LEAF == 0 {
+					q1.Mark |= LABEL
+				}
+			} else {
+				p.Mark |= LABEL
+			}
+			q1 = p.Link
+			if q1 != nil {
+				q1.Mark |= LABEL
+			}
+			continue
+
+		case AFCMPO, AFCMPU:
+			q = p
+			p.Mark |= FCMP | FLOAT
+			continue
+
+		case obj.ARET:
+			q = p
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+			continue
+
+		case obj.ANOP:
+			q1 = p.Link
+			q.Link = q1 /* q is non-nop */
+			q1.Mark |= p.Mark
+			continue
+
+		default:
+			q = p
+			continue
+		}
+	}
+
+	autosize := int32(0)
+	var p1 *obj.Prog
+	var p2 *obj.Prog
+	var pLast *obj.Prog
+	var pPre *obj.Prog
+	var pPreempt *obj.Prog
+	wasSplit := false
+	for p := cursym.Text; p != nil; p = p.Link {
+		pLast = p
+		switch p.As {
+		case obj.ATEXT:
+			autosize = int32(textstksiz)
+
+			if p.Mark&LEAF != 0 && autosize == 0 {
+				// A leaf function with no locals has no frame.
+				p.From3.Offset |= obj.NOFRAME
+			}
+
+			if p.From3.Offset&obj.NOFRAME == 0 {
+				// If there is a stack frame at all, it includes
+				// space to save the LR.
+				autosize += int32(ctxt.FixedFrameSize())
+			}
+
+			if p.Mark&LEAF != 0 && autosize < obj.StackSmall {
+				// A leaf function with a small stack can be marked
+				// NOSPLIT, avoiding a stack check.
+				p.From3.Offset |= obj.NOSPLIT
+			}
+
+			p.To.Offset = int64(autosize)
+
+			q = p
+
+			if p.From3.Offset&obj.NOSPLIT == 0 {
+				p, pPreempt = stacksplitPre(ctxt, p, autosize) // emit pre part of split check
+				pPre = p
+				wasSplit = true //need post part of split
+			}
+
+			if autosize != 0 {
+				// Make sure to save link register for non-empty frame, even if
+				// it is a leaf function, so that traceback works.
+				// Store link register before decrementing SP, so if a signal comes
+				// during the execution of the function prologue, the traceback
+				// code will not see a half-updated stack frame.
+				q = obj.Appendp(ctxt, p)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_LR
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REGSP
+				q.To.Offset = int64(-autosize)
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_ADDR
+				q.From.Offset = int64(-autosize)
+				q.From.Reg = REGSP // not actually needed - REGSP is assumed if no reg is provided
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = autosize
+			} else if cursym.Text.Mark&LEAF == 0 {
+				// A very few functions that do not return to their caller
+				// (e.g. gogo) are not identified as leaves but still have
+				// no frame.
+				cursym.Text.Mark |= LEAF
+			}
+
+			if cursym.Text.Mark&LEAF != 0 {
+				cursym.Set(obj.AttrLeaf, true)
+				break
+			}
+
+			if cursym.Text.From3.Offset&obj.WRAPPER != 0 {
+				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+				//
+				//	MOVD g_panic(g), R3
+				//	CMP R3, $0
+				//	BEQ end
+				//	MOVD panic_argp(R3), R4
+				//	ADD $(autosize+8), R1, R5
+				//	CMP R4, R5
+				//	BNE end
+				//	ADD $8, R1, R6
+				//	MOVD R6, panic_argp(R3)
+				// end:
+				//	NOP
+				//
+				// The NOP is needed to give the jumps somewhere to land.
+				// It is a liblink NOP, not a s390x NOP: it encodes to 0 instruction bytes.
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REGG
+				q.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R3
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ACMP
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R3
+				q.To.Type = obj.TYPE_CONST
+				q.To.Offset = 0
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABEQ
+				q.To.Type = obj.TYPE_BRANCH
+				p1 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REG_R3
+				q.From.Offset = 0 // Panic.argp
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R4
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize) + ctxt.FixedFrameSize()
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R5
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ACMP
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R4
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R5
+
+				q = obj.Appendp(ctxt, q)
+				q.As = ABNE
+				q.To.Type = obj.TYPE_BRANCH
+				p2 = q
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = ctxt.FixedFrameSize()
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R6
+
+				q = obj.Appendp(ctxt, q)
+				q.As = AMOVD
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R6
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REG_R3
+				q.To.Offset = 0 // Panic.argp
+
+				q = obj.Appendp(ctxt, q)
+
+				q.As = obj.ANOP
+				p1.Pcond = q
+				p2.Pcond = q
+			}
+
+		case obj.ARET:
+			if p.From.Type == obj.TYPE_CONST {
+				ctxt.Diag("using BECOME (%v) is not supported!", p)
+				break
+			}
+
+			retTarget := p.To.Sym
+
+			if cursym.Text.Mark&LEAF != 0 {
+				if autosize == 0 {
+					p.As = ABR
+					p.From = obj.Addr{}
+					if retTarget == nil {
+						p.To.Type = obj.TYPE_REG
+						p.To.Reg = REG_LR
+					} else {
+						p.To.Type = obj.TYPE_BRANCH
+						p.To.Sym = retTarget
+					}
+					p.Mark |= BRANCH
+					break
+				}
+
+				p.As = AADD
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = int64(autosize)
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGSP
+				p.Spadj = -autosize
+
+				q = obj.Appendp(ctxt, p)
+				q.As = ABR
+				q.From = obj.Addr{}
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_LR
+				q.Mark |= BRANCH
+				q.Spadj = autosize
+				break
+			}
+
+			p.As = AMOVD
+			p.From.Type = obj.TYPE_MEM
+			p.From.Reg = REGSP
+			p.From.Offset = 0
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_LR
+
+			q = p
+
+			if autosize != 0 {
+				q = obj.Appendp(ctxt, q)
+				q.As = AADD
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize)
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = -autosize
+			}
+
+			q = obj.Appendp(ctxt, q)
+			q.As = ABR
+			q.From = obj.Addr{}
+			if retTarget == nil {
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_LR
+			} else {
+				q.To.Type = obj.TYPE_BRANCH
+				q.To.Sym = retTarget
+			}
+			q.Mark |= BRANCH
+			q.Spadj = autosize
+
+		case AADD:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
+				p.Spadj = int32(-p.From.Offset)
+			}
+		}
+	}
+	if wasSplit {
+		pLast = stacksplitPost(ctxt, pLast, pPre, pPreempt, autosize) // emit post part of split check
+	}
+}
+
+/*
+// instruction scheduling
+	if(debug['Q'] == 0)
+		return;
+
+	curtext = nil;
+	q = nil;	// p - 1
+	q1 = firstp;	// top of block
+	o = 0;		// count of instructions
+	for(p = firstp; p != nil; p = p1) {
+		p1 = p->link;
+		o++;
+		if(p->mark & NOSCHED){
+			if(q1 != p){
+				sched(q1, q);
+			}
+			for(; p != nil; p = p->link){
+				if(!(p->mark & NOSCHED))
+					break;
+				q = p;
+			}
+			p1 = p;
+			q1 = p;
+			o = 0;
+			continue;
+		}
+		if(p->mark & (LABEL|SYNC)) {
+			if(q1 != p)
+				sched(q1, q);
+			q1 = p;
+			o = 1;
+		}
+		if(p->mark & (BRANCH|SYNC)) {
+			sched(q1, p);
+			q1 = p1;
+			o = 0;
+		}
+		if(o >= NSCHED) {
+			sched(q1, p);
+			q1 = p1;
+			o = 0;
+		}
+		q = p;
+	}
+*/
+func stacksplitPre(ctxt *obj.Link, p *obj.Prog, framesize int32) (*obj.Prog, *obj.Prog) {
+	var q *obj.Prog
+
+	// MOVD	g_stackguard(g), R3
+	p = obj.Appendp(ctxt, p)
+
+	p.As = AMOVD
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REGG
+	p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+	if ctxt.Cursym.CFunc() {
+		p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+	}
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R3
+
+	q = nil
+	if framesize <= obj.StackSmall {
+		// small stack: SP < stackguard
+		//	CMP	stackguard, SP
+
+		//p.To.Type = obj.TYPE_REG
+		//p.To.Reg = REGSP
+
+		// q1: BLT	done
+
+		p = obj.Appendp(ctxt, p)
+		//q1 = p
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.Reg = REGSP
+		p.As = ACMPUBGE
+		p.To.Type = obj.TYPE_BRANCH
+		//p = obj.Appendp(ctxt, p)
+
+		//p.As = ACMPU
+		//p.From.Type = obj.TYPE_REG
+		//p.From.Reg = REG_R3
+		//p.To.Type = obj.TYPE_REG
+		//p.To.Reg = REGSP
+
+		//p = obj.Appendp(ctxt, p)
+		//p.As = ABGE
+		//p.To.Type = obj.TYPE_BRANCH
+
+	} else if framesize <= obj.StackBig {
+		// large stack: SP-framesize < stackguard-StackSmall
+		//	ADD $-framesize, SP, R4
+		//	CMP stackguard, R4
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AADD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(-framesize)
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(ctxt, p)
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.Reg = REG_R4
+		p.As = ACMPUBGE
+		p.To.Type = obj.TYPE_BRANCH
+
+	} else {
+		// Such a large stack we need to protect against wraparound.
+		// If SP is close to zero:
+		//	SP-stackguard+StackGuard <= framesize + (StackGuard-StackSmall)
+		// The +StackGuard on both sides is required to keep the left side positive:
+		// SP is allowed to be slightly below stackguard. See stack.h.
+		//
+		// Preemption sets stackguard to StackPreempt, a very large value.
+		// That breaks the math above, so we have to check for that explicitly.
+		//	// stackguard is R3
+		//	CMP	R3, $StackPreempt
+		//	BEQ	label-of-call-to-morestack
+		//	ADD	$StackGuard, SP, R4
+		//	SUB	R3, R4
+		//	MOVD	$(framesize+(StackGuard-StackSmall)), TEMP
+		//	CMPUBGE	TEMP, R4
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ACMP
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.To.Type = obj.TYPE_CONST
+		p.To.Offset = obj.StackPreempt
+
+		p = obj.Appendp(ctxt, p)
+		q = p
+		p.As = ABEQ
+		p.To.Type = obj.TYPE_BRANCH
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AADD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = obj.StackGuard
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ASUB
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R3
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVD
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(framesize) + obj.StackGuard - obj.StackSmall
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGTMP
+
+		p = obj.Appendp(ctxt, p)
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGTMP
+		p.Reg = REG_R4
+		p.As = ACMPUBGE
+		p.To.Type = obj.TYPE_BRANCH
+	}
+
+	return p, q
+}
+
+func stacksplitPost(ctxt *obj.Link, p *obj.Prog, pPre *obj.Prog, pPreempt *obj.Prog, framesize int32) *obj.Prog {
+	// Now we are at the end of the function, but logically
+	// we are still in function prologue. We need to fix the
+	// SP data and PCDATA.
+	spfix := obj.Appendp(ctxt, p)
+	spfix.As = obj.ANOP
+	spfix.Spadj = -framesize
+
+	pcdata := obj.Appendp(ctxt, spfix)
+	pcdata.Lineno = ctxt.Cursym.Text.Lineno
+	pcdata.Mode = ctxt.Cursym.Text.Mode
+	pcdata.As = obj.APCDATA
+	pcdata.From.Type = obj.TYPE_CONST
+	pcdata.From.Offset = obj.PCDATA_StackMapIndex
+	pcdata.To.Type = obj.TYPE_CONST
+	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+
+	// MOVD	LR, R5
+	p = obj.Appendp(ctxt, pcdata)
+	pPre.Pcond = p
+	p.As = AMOVD
+	p.From.Type = obj.TYPE_REG
+	p.From.Reg = REG_LR
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R5
+	if pPreempt != nil {
+		pPreempt.Pcond = p
+	}
+
+	// BL	runtime.morestack(SB)
+	p = obj.Appendp(ctxt, p)
+
+	p.As = ABL
+	p.To.Type = obj.TYPE_BRANCH
+	if ctxt.Cursym.CFunc() {
+		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
+	} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
+		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
+	} else {
+		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack", 0)
+	}
+
+	// BR	start
+	p = obj.Appendp(ctxt, p)
+
+	p.As = ABR
+	p.To.Type = obj.TYPE_BRANCH
+	p.Pcond = ctxt.Cursym.Text.Link
+	return p
+}
+
+var pc_cnt int64
+
+func follow(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	pc_cnt = 0
+	firstp := ctxt.NewProg()
+	lastp := firstp
+	xfol(ctxt, s.Text, &lastp)
+	lastp.Link = nil
+	s.Text = firstp.Link
+}
+
+func relinv(a obj.As) obj.As {
+	switch a {
+	case ABEQ:
+		return ABNE
+	case ABNE:
+		return ABEQ
+
+	case ABGE:
+		return ABLT
+	case ABLT:
+		return ABGE
+
+	case ABGT:
+		return ABLE
+	case ABLE:
+		return ABGT
+
+	case ABVC:
+		return ABVS
+	case ABVS:
+		return ABVC
+	}
+
+	return 0
+}
+
+func xfol(ctxt *obj.Link, p *obj.Prog, last **obj.Prog) {
+	var q *obj.Prog
+	var r *obj.Prog
+	var b obj.As
+
+	for p != nil {
+		a := p.As
+		if a == ABR {
+			q = p.Pcond
+			if (p.Mark&NOSCHED != 0) || q != nil && (q.Mark&NOSCHED != 0) {
+				p.Mark |= FOLL
+				(*last).Link = p
+				*last = p
+				(*last).Pc = pc_cnt
+				pc_cnt += 1
+				p = p.Link
+				xfol(ctxt, p, last)
+				p = q
+				if p != nil && p.Mark&FOLL == 0 {
+					continue
+				}
+				return
+			}
+
+			if q != nil {
+				p.Mark |= FOLL
+				p = q
+				if p.Mark&FOLL == 0 {
+					continue
+				}
+			}
+		}
+
+		if p.Mark&FOLL != 0 {
+			q = p
+			for i := 0; i < 4; i, q = i+1, q.Link {
+				if q == *last || (q.Mark&NOSCHED != 0) {
+					break
+				}
+				b = 0 /* set */
+				a = q.As
+				if a == obj.ANOP {
+					i--
+					continue
+				}
+				if a != ABR && a != obj.ARET {
+					if q.Pcond == nil || (q.Pcond.Mark&FOLL != 0) {
+						continue
+					}
+					b = relinv(a)
+					if b == 0 {
+						continue
+					}
+				}
+
+				for {
+					r = ctxt.NewProg()
+					*r = *p
+					if r.Mark&FOLL == 0 {
+						fmt.Printf("can't happen 1\n")
+					}
+					r.Mark |= FOLL
+					if p != q {
+						p = p.Link
+						(*last).Link = r
+						*last = r
+						(*last).Pc = pc_cnt
+						pc_cnt += 1
+						continue
+					}
+
+					(*last).Link = r
+					*last = r
+					(*last).Pc = pc_cnt
+					pc_cnt += 1
+					if a == ABR || a == obj.ARET {
+						return
+					}
+					r.As = b
+					r.Pcond = p.Link
+					r.Link = p.Pcond
+					if r.Link.Mark&FOLL == 0 {
+						xfol(ctxt, r.Link, last)
+					}
+					if r.Pcond.Mark&FOLL == 0 {
+						fmt.Printf("can't happen 2\n")
+					}
+					return
+				}
+			}
+
+			a = ABR
+			q = ctxt.NewProg()
+			q.As = a
+			q.Lineno = p.Lineno
+			q.To.Type = obj.TYPE_BRANCH
+			q.To.Offset = p.Pc
+			q.Pcond = p
+			p = q
+		}
+
+		p.Mark |= FOLL
+		(*last).Link = p
+		*last = p
+		(*last).Pc = pc_cnt
+		pc_cnt += 1
+
+		if a == ABR || a == obj.ARET {
+			if p.Mark&NOSCHED != 0 {
+				p = p.Link
+				continue
+			}
+
+			return
+		}
+
+		if p.Pcond != nil {
+			if a != ABL && p.Link != nil {
+				xfol(ctxt, p.Link, last)
+				p = p.Pcond
+				if p == nil || (p.Mark&FOLL != 0) {
+					return
+				}
+				continue
+			}
+		}
+
+		p = p.Link
+	}
+}
+
+var unaryDst = map[obj.As]bool{
+	ASTCK:  true,
+	ASTCKC: true,
+	ASTCKE: true,
+	ASTCKF: true,
+	ANEG:   true,
+	ANEGW:  true,
+	AVONE:  true,
+	AVZERO: true,
+}
+
+var Links390x = obj.LinkArch{
+	Arch:       sys.ArchS390X,
+	Preprocess: preprocess,
+	Assemble:   spanz,
+	Follow:     follow,
+	Progedit:   progedit,
+	UnaryDst:   unaryDst,
+}
diff --git a/vendor/github.com/google/gops/internal/obj/s390x/vector.go b/vendor/github.com/google/gops/internal/obj/s390x/vector.go
new file mode 100644
index 00000000..7aa62229
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/s390x/vector.go
@@ -0,0 +1,1061 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package s390x
+
+import (
+	"github.com/google/gops/internal/obj"
+)
+
+// This file contains utility functions for use when
+// assembling vector instructions.
+
+// vop returns the opcode, element size and condition
+// setting for the given (possibly extended) mnemonic.
+func vop(as obj.As) (opcode, es, cs uint32) {
+	switch as {
+	default:
+		return 0, 0, 0
+	case AVA:
+		return op_VA, 0, 0
+	case AVAB:
+		return op_VA, 0, 0
+	case AVAH:
+		return op_VA, 1, 0
+	case AVAF:
+		return op_VA, 2, 0
+	case AVAG:
+		return op_VA, 3, 0
+	case AVAQ:
+		return op_VA, 4, 0
+	case AVACC:
+		return op_VACC, 0, 0
+	case AVACCB:
+		return op_VACC, 0, 0
+	case AVACCH:
+		return op_VACC, 1, 0
+	case AVACCF:
+		return op_VACC, 2, 0
+	case AVACCG:
+		return op_VACC, 3, 0
+	case AVACCQ:
+		return op_VACC, 4, 0
+	case AVAC:
+		return op_VAC, 0, 0
+	case AVACQ:
+		return op_VAC, 4, 0
+	case AVACCC:
+		return op_VACCC, 0, 0
+	case AVACCCQ:
+		return op_VACCC, 4, 0
+	case AVN:
+		return op_VN, 0, 0
+	case AVNC:
+		return op_VNC, 0, 0
+	case AVAVG:
+		return op_VAVG, 0, 0
+	case AVAVGB:
+		return op_VAVG, 0, 0
+	case AVAVGH:
+		return op_VAVG, 1, 0
+	case AVAVGF:
+		return op_VAVG, 2, 0
+	case AVAVGG:
+		return op_VAVG, 3, 0
+	case AVAVGL:
+		return op_VAVGL, 0, 0
+	case AVAVGLB:
+		return op_VAVGL, 0, 0
+	case AVAVGLH:
+		return op_VAVGL, 1, 0
+	case AVAVGLF:
+		return op_VAVGL, 2, 0
+	case AVAVGLG:
+		return op_VAVGL, 3, 0
+	case AVCKSM:
+		return op_VCKSM, 0, 0
+	case AVCEQ:
+		return op_VCEQ, 0, 0
+	case AVCEQB:
+		return op_VCEQ, 0, 0
+	case AVCEQH:
+		return op_VCEQ, 1, 0
+	case AVCEQF:
+		return op_VCEQ, 2, 0
+	case AVCEQG:
+		return op_VCEQ, 3, 0
+	case AVCEQBS:
+		return op_VCEQ, 0, 1
+	case AVCEQHS:
+		return op_VCEQ, 1, 1
+	case AVCEQFS:
+		return op_VCEQ, 2, 1
+	case AVCEQGS:
+		return op_VCEQ, 3, 1
+	case AVCH:
+		return op_VCH, 0, 0
+	case AVCHB:
+		return op_VCH, 0, 0
+	case AVCHH:
+		return op_VCH, 1, 0
+	case AVCHF:
+		return op_VCH, 2, 0
+	case AVCHG:
+		return op_VCH, 3, 0
+	case AVCHBS:
+		return op_VCH, 0, 1
+	case AVCHHS:
+		return op_VCH, 1, 1
+	case AVCHFS:
+		return op_VCH, 2, 1
+	case AVCHGS:
+		return op_VCH, 3, 1
+	case AVCHL:
+		return op_VCHL, 0, 0
+	case AVCHLB:
+		return op_VCHL, 0, 0
+	case AVCHLH:
+		return op_VCHL, 1, 0
+	case AVCHLF:
+		return op_VCHL, 2, 0
+	case AVCHLG:
+		return op_VCHL, 3, 0
+	case AVCHLBS:
+		return op_VCHL, 0, 1
+	case AVCHLHS:
+		return op_VCHL, 1, 1
+	case AVCHLFS:
+		return op_VCHL, 2, 1
+	case AVCHLGS:
+		return op_VCHL, 3, 1
+	case AVCLZ:
+		return op_VCLZ, 0, 0
+	case AVCLZB:
+		return op_VCLZ, 0, 0
+	case AVCLZH:
+		return op_VCLZ, 1, 0
+	case AVCLZF:
+		return op_VCLZ, 2, 0
+	case AVCLZG:
+		return op_VCLZ, 3, 0
+	case AVCTZ:
+		return op_VCTZ, 0, 0
+	case AVCTZB:
+		return op_VCTZ, 0, 0
+	case AVCTZH:
+		return op_VCTZ, 1, 0
+	case AVCTZF:
+		return op_VCTZ, 2, 0
+	case AVCTZG:
+		return op_VCTZ, 3, 0
+	case AVEC:
+		return op_VEC, 0, 0
+	case AVECB:
+		return op_VEC, 0, 0
+	case AVECH:
+		return op_VEC, 1, 0
+	case AVECF:
+		return op_VEC, 2, 0
+	case AVECG:
+		return op_VEC, 3, 0
+	case AVECL:
+		return op_VECL, 0, 0
+	case AVECLB:
+		return op_VECL, 0, 0
+	case AVECLH:
+		return op_VECL, 1, 0
+	case AVECLF:
+		return op_VECL, 2, 0
+	case AVECLG:
+		return op_VECL, 3, 0
+	case AVERIM:
+		return op_VERIM, 0, 0
+	case AVERIMB:
+		return op_VERIM, 0, 0
+	case AVERIMH:
+		return op_VERIM, 1, 0
+	case AVERIMF:
+		return op_VERIM, 2, 0
+	case AVERIMG:
+		return op_VERIM, 3, 0
+	case AVERLL:
+		return op_VERLL, 0, 0
+	case AVERLLB:
+		return op_VERLL, 0, 0
+	case AVERLLH:
+		return op_VERLL, 1, 0
+	case AVERLLF:
+		return op_VERLL, 2, 0
+	case AVERLLG:
+		return op_VERLL, 3, 0
+	case AVERLLV:
+		return op_VERLLV, 0, 0
+	case AVERLLVB:
+		return op_VERLLV, 0, 0
+	case AVERLLVH:
+		return op_VERLLV, 1, 0
+	case AVERLLVF:
+		return op_VERLLV, 2, 0
+	case AVERLLVG:
+		return op_VERLLV, 3, 0
+	case AVESLV:
+		return op_VESLV, 0, 0
+	case AVESLVB:
+		return op_VESLV, 0, 0
+	case AVESLVH:
+		return op_VESLV, 1, 0
+	case AVESLVF:
+		return op_VESLV, 2, 0
+	case AVESLVG:
+		return op_VESLV, 3, 0
+	case AVESL:
+		return op_VESL, 0, 0
+	case AVESLB:
+		return op_VESL, 0, 0
+	case AVESLH:
+		return op_VESL, 1, 0
+	case AVESLF:
+		return op_VESL, 2, 0
+	case AVESLG:
+		return op_VESL, 3, 0
+	case AVESRA:
+		return op_VESRA, 0, 0
+	case AVESRAB:
+		return op_VESRA, 0, 0
+	case AVESRAH:
+		return op_VESRA, 1, 0
+	case AVESRAF:
+		return op_VESRA, 2, 0
+	case AVESRAG:
+		return op_VESRA, 3, 0
+	case AVESRAV:
+		return op_VESRAV, 0, 0
+	case AVESRAVB:
+		return op_VESRAV, 0, 0
+	case AVESRAVH:
+		return op_VESRAV, 1, 0
+	case AVESRAVF:
+		return op_VESRAV, 2, 0
+	case AVESRAVG:
+		return op_VESRAV, 3, 0
+	case AVESRL:
+		return op_VESRL, 0, 0
+	case AVESRLB:
+		return op_VESRL, 0, 0
+	case AVESRLH:
+		return op_VESRL, 1, 0
+	case AVESRLF:
+		return op_VESRL, 2, 0
+	case AVESRLG:
+		return op_VESRL, 3, 0
+	case AVESRLV:
+		return op_VESRLV, 0, 0
+	case AVESRLVB:
+		return op_VESRLV, 0, 0
+	case AVESRLVH:
+		return op_VESRLV, 1, 0
+	case AVESRLVF:
+		return op_VESRLV, 2, 0
+	case AVESRLVG:
+		return op_VESRLV, 3, 0
+	case AVX:
+		return op_VX, 0, 0
+	case AVFAE:
+		return op_VFAE, 0, 0
+	case AVFAEB:
+		return op_VFAE, 0, 0
+	case AVFAEH:
+		return op_VFAE, 1, 0
+	case AVFAEF:
+		return op_VFAE, 2, 0
+	case AVFAEBS:
+		return op_VFAE, 0, 1
+	case AVFAEHS:
+		return op_VFAE, 1, 1
+	case AVFAEFS:
+		return op_VFAE, 2, 1
+	case AVFAEZB:
+		return op_VFAE, 0, 2
+	case AVFAEZH:
+		return op_VFAE, 1, 2
+	case AVFAEZF:
+		return op_VFAE, 2, 2
+	case AVFAEZBS:
+		return op_VFAE, 0, 3
+	case AVFAEZHS:
+		return op_VFAE, 1, 3
+	case AVFAEZFS:
+		return op_VFAE, 2, 3
+	case AVFEE:
+		return op_VFEE, 0, 0
+	case AVFEEB:
+		return op_VFEE, 0, 0
+	case AVFEEH:
+		return op_VFEE, 1, 0
+	case AVFEEF:
+		return op_VFEE, 2, 0
+	case AVFEEBS:
+		return op_VFEE, 0, 1
+	case AVFEEHS:
+		return op_VFEE, 1, 1
+	case AVFEEFS:
+		return op_VFEE, 2, 1
+	case AVFEEZB:
+		return op_VFEE, 0, 2
+	case AVFEEZH:
+		return op_VFEE, 1, 2
+	case AVFEEZF:
+		return op_VFEE, 2, 2
+	case AVFEEZBS:
+		return op_VFEE, 0, 3
+	case AVFEEZHS:
+		return op_VFEE, 1, 3
+	case AVFEEZFS:
+		return op_VFEE, 2, 3
+	case AVFENE:
+		return op_VFENE, 0, 0
+	case AVFENEB:
+		return op_VFENE, 0, 0
+	case AVFENEH:
+		return op_VFENE, 1, 0
+	case AVFENEF:
+		return op_VFENE, 2, 0
+	case AVFENEBS:
+		return op_VFENE, 0, 1
+	case AVFENEHS:
+		return op_VFENE, 1, 1
+	case AVFENEFS:
+		return op_VFENE, 2, 1
+	case AVFENEZB:
+		return op_VFENE, 0, 2
+	case AVFENEZH:
+		return op_VFENE, 1, 2
+	case AVFENEZF:
+		return op_VFENE, 2, 2
+	case AVFENEZBS:
+		return op_VFENE, 0, 3
+	case AVFENEZHS:
+		return op_VFENE, 1, 3
+	case AVFENEZFS:
+		return op_VFENE, 2, 3
+	case AVFA:
+		return op_VFA, 0, 0
+	case AVFADB:
+		return op_VFA, 3, 0
+	case AWFADB:
+		return op_VFA, 3, 0
+	case AWFK:
+		return op_WFK, 0, 0
+	case AWFKDB:
+		return op_WFK, 3, 0
+	case AVFCE:
+		return op_VFCE, 0, 0
+	case AVFCEDB:
+		return op_VFCE, 3, 0
+	case AVFCEDBS:
+		return op_VFCE, 3, 1
+	case AWFCEDB:
+		return op_VFCE, 3, 0
+	case AWFCEDBS:
+		return op_VFCE, 3, 1
+	case AVFCH:
+		return op_VFCH, 0, 0
+	case AVFCHDB:
+		return op_VFCH, 3, 0
+	case AVFCHDBS:
+		return op_VFCH, 3, 1
+	case AWFCHDB:
+		return op_VFCH, 3, 0
+	case AWFCHDBS:
+		return op_VFCH, 3, 1
+	case AVFCHE:
+		return op_VFCHE, 0, 0
+	case AVFCHEDB:
+		return op_VFCHE, 3, 0
+	case AVFCHEDBS:
+		return op_VFCHE, 3, 1
+	case AWFCHEDB:
+		return op_VFCHE, 3, 0
+	case AWFCHEDBS:
+		return op_VFCHE, 3, 1
+	case AWFC:
+		return op_WFC, 0, 0
+	case AWFCDB:
+		return op_WFC, 3, 0
+	case AVCDG:
+		return op_VCDG, 0, 0
+	case AVCDGB:
+		return op_VCDG, 3, 0
+	case AWCDGB:
+		return op_VCDG, 3, 0
+	case AVCDLG:
+		return op_VCDLG, 0, 0
+	case AVCDLGB:
+		return op_VCDLG, 3, 0
+	case AWCDLGB:
+		return op_VCDLG, 3, 0
+	case AVCGD:
+		return op_VCGD, 0, 0
+	case AVCGDB:
+		return op_VCGD, 3, 0
+	case AWCGDB:
+		return op_VCGD, 3, 0
+	case AVCLGD:
+		return op_VCLGD, 0, 0
+	case AVCLGDB:
+		return op_VCLGD, 3, 0
+	case AWCLGDB:
+		return op_VCLGD, 3, 0
+	case AVFD:
+		return op_VFD, 0, 0
+	case AVFDDB:
+		return op_VFD, 3, 0
+	case AWFDDB:
+		return op_VFD, 3, 0
+	case AVLDE:
+		return op_VLDE, 0, 0
+	case AVLDEB:
+		return op_VLDE, 2, 0
+	case AWLDEB:
+		return op_VLDE, 2, 0
+	case AVLED:
+		return op_VLED, 0, 0
+	case AVLEDB:
+		return op_VLED, 3, 0
+	case AWLEDB:
+		return op_VLED, 3, 0
+	case AVFM:
+		return op_VFM, 0, 0
+	case AVFMDB:
+		return op_VFM, 3, 0
+	case AWFMDB:
+		return op_VFM, 3, 0
+	case AVFMA:
+		return op_VFMA, 0, 0
+	case AVFMADB:
+		return op_VFMA, 3, 0
+	case AWFMADB:
+		return op_VFMA, 3, 0
+	case AVFMS:
+		return op_VFMS, 0, 0
+	case AVFMSDB:
+		return op_VFMS, 3, 0
+	case AWFMSDB:
+		return op_VFMS, 3, 0
+	case AVFPSO:
+		return op_VFPSO, 0, 0
+	case AVFPSODB:
+		return op_VFPSO, 3, 0
+	case AWFPSODB:
+		return op_VFPSO, 3, 0
+	case AVFLCDB:
+		return op_VFPSO, 3, 0
+	case AWFLCDB:
+		return op_VFPSO, 3, 0
+	case AVFLNDB:
+		return op_VFPSO, 3, 1
+	case AWFLNDB:
+		return op_VFPSO, 3, 1
+	case AVFLPDB:
+		return op_VFPSO, 3, 2
+	case AWFLPDB:
+		return op_VFPSO, 3, 2
+	case AVFSQ:
+		return op_VFSQ, 0, 0
+	case AVFSQDB:
+		return op_VFSQ, 3, 0
+	case AWFSQDB:
+		return op_VFSQ, 3, 0
+	case AVFS:
+		return op_VFS, 0, 0
+	case AVFSDB:
+		return op_VFS, 3, 0
+	case AWFSDB:
+		return op_VFS, 3, 0
+	case AVFTCI:
+		return op_VFTCI, 0, 0
+	case AVFTCIDB:
+		return op_VFTCI, 3, 0
+	case AWFTCIDB:
+		return op_VFTCI, 3, 0
+	case AVGFM:
+		return op_VGFM, 0, 0
+	case AVGFMB:
+		return op_VGFM, 0, 0
+	case AVGFMH:
+		return op_VGFM, 1, 0
+	case AVGFMF:
+		return op_VGFM, 2, 0
+	case AVGFMG:
+		return op_VGFM, 3, 0
+	case AVGFMA:
+		return op_VGFMA, 0, 0
+	case AVGFMAB:
+		return op_VGFMA, 0, 0
+	case AVGFMAH:
+		return op_VGFMA, 1, 0
+	case AVGFMAF:
+		return op_VGFMA, 2, 0
+	case AVGFMAG:
+		return op_VGFMA, 3, 0
+	case AVGEF:
+		return op_VGEF, 0, 0
+	case AVGEG:
+		return op_VGEG, 0, 0
+	case AVGBM:
+		return op_VGBM, 0, 0
+	case AVZERO:
+		return op_VGBM, 0, 0
+	case AVONE:
+		return op_VGBM, 0, 0
+	case AVGM:
+		return op_VGM, 0, 0
+	case AVGMB:
+		return op_VGM, 0, 0
+	case AVGMH:
+		return op_VGM, 1, 0
+	case AVGMF:
+		return op_VGM, 2, 0
+	case AVGMG:
+		return op_VGM, 3, 0
+	case AVISTR:
+		return op_VISTR, 0, 0
+	case AVISTRB:
+		return op_VISTR, 0, 0
+	case AVISTRH:
+		return op_VISTR, 1, 0
+	case AVISTRF:
+		return op_VISTR, 2, 0
+	case AVISTRBS:
+		return op_VISTR, 0, 1
+	case AVISTRHS:
+		return op_VISTR, 1, 1
+	case AVISTRFS:
+		return op_VISTR, 2, 1
+	case AVL:
+		return op_VL, 0, 0
+	case AVLR:
+		return op_VLR, 0, 0
+	case AVLREP:
+		return op_VLREP, 0, 0
+	case AVLREPB:
+		return op_VLREP, 0, 0
+	case AVLREPH:
+		return op_VLREP, 1, 0
+	case AVLREPF:
+		return op_VLREP, 2, 0
+	case AVLREPG:
+		return op_VLREP, 3, 0
+	case AVLC:
+		return op_VLC, 0, 0
+	case AVLCB:
+		return op_VLC, 0, 0
+	case AVLCH:
+		return op_VLC, 1, 0
+	case AVLCF:
+		return op_VLC, 2, 0
+	case AVLCG:
+		return op_VLC, 3, 0
+	case AVLEH:
+		return op_VLEH, 0, 0
+	case AVLEF:
+		return op_VLEF, 0, 0
+	case AVLEG:
+		return op_VLEG, 0, 0
+	case AVLEB:
+		return op_VLEB, 0, 0
+	case AVLEIH:
+		return op_VLEIH, 0, 0
+	case AVLEIF:
+		return op_VLEIF, 0, 0
+	case AVLEIG:
+		return op_VLEIG, 0, 0
+	case AVLEIB:
+		return op_VLEIB, 0, 0
+	case AVFI:
+		return op_VFI, 0, 0
+	case AVFIDB:
+		return op_VFI, 3, 0
+	case AWFIDB:
+		return op_VFI, 3, 0
+	case AVLGV:
+		return op_VLGV, 0, 0
+	case AVLGVB:
+		return op_VLGV, 0, 0
+	case AVLGVH:
+		return op_VLGV, 1, 0
+	case AVLGVF:
+		return op_VLGV, 2, 0
+	case AVLGVG:
+		return op_VLGV, 3, 0
+	case AVLLEZ:
+		return op_VLLEZ, 0, 0
+	case AVLLEZB:
+		return op_VLLEZ, 0, 0
+	case AVLLEZH:
+		return op_VLLEZ, 1, 0
+	case AVLLEZF:
+		return op_VLLEZ, 2, 0
+	case AVLLEZG:
+		return op_VLLEZ, 3, 0
+	case AVLM:
+		return op_VLM, 0, 0
+	case AVLP:
+		return op_VLP, 0, 0
+	case AVLPB:
+		return op_VLP, 0, 0
+	case AVLPH:
+		return op_VLP, 1, 0
+	case AVLPF:
+		return op_VLP, 2, 0
+	case AVLPG:
+		return op_VLP, 3, 0
+	case AVLBB:
+		return op_VLBB, 0, 0
+	case AVLVG:
+		return op_VLVG, 0, 0
+	case AVLVGB:
+		return op_VLVG, 0, 0
+	case AVLVGH:
+		return op_VLVG, 1, 0
+	case AVLVGF:
+		return op_VLVG, 2, 0
+	case AVLVGG:
+		return op_VLVG, 3, 0
+	case AVLVGP:
+		return op_VLVGP, 0, 0
+	case AVLL:
+		return op_VLL, 0, 0
+	case AVMX:
+		return op_VMX, 0, 0
+	case AVMXB:
+		return op_VMX, 0, 0
+	case AVMXH:
+		return op_VMX, 1, 0
+	case AVMXF:
+		return op_VMX, 2, 0
+	case AVMXG:
+		return op_VMX, 3, 0
+	case AVMXL:
+		return op_VMXL, 0, 0
+	case AVMXLB:
+		return op_VMXL, 0, 0
+	case AVMXLH:
+		return op_VMXL, 1, 0
+	case AVMXLF:
+		return op_VMXL, 2, 0
+	case AVMXLG:
+		return op_VMXL, 3, 0
+	case AVMRH:
+		return op_VMRH, 0, 0
+	case AVMRHB:
+		return op_VMRH, 0, 0
+	case AVMRHH:
+		return op_VMRH, 1, 0
+	case AVMRHF:
+		return op_VMRH, 2, 0
+	case AVMRHG:
+		return op_VMRH, 3, 0
+	case AVMRL:
+		return op_VMRL, 0, 0
+	case AVMRLB:
+		return op_VMRL, 0, 0
+	case AVMRLH:
+		return op_VMRL, 1, 0
+	case AVMRLF:
+		return op_VMRL, 2, 0
+	case AVMRLG:
+		return op_VMRL, 3, 0
+	case AVMN:
+		return op_VMN, 0, 0
+	case AVMNB:
+		return op_VMN, 0, 0
+	case AVMNH:
+		return op_VMN, 1, 0
+	case AVMNF:
+		return op_VMN, 2, 0
+	case AVMNG:
+		return op_VMN, 3, 0
+	case AVMNL:
+		return op_VMNL, 0, 0
+	case AVMNLB:
+		return op_VMNL, 0, 0
+	case AVMNLH:
+		return op_VMNL, 1, 0
+	case AVMNLF:
+		return op_VMNL, 2, 0
+	case AVMNLG:
+		return op_VMNL, 3, 0
+	case AVMAE:
+		return op_VMAE, 0, 0
+	case AVMAEB:
+		return op_VMAE, 0, 0
+	case AVMAEH:
+		return op_VMAE, 1, 0
+	case AVMAEF:
+		return op_VMAE, 2, 0
+	case AVMAH:
+		return op_VMAH, 0, 0
+	case AVMAHB:
+		return op_VMAH, 0, 0
+	case AVMAHH:
+		return op_VMAH, 1, 0
+	case AVMAHF:
+		return op_VMAH, 2, 0
+	case AVMALE:
+		return op_VMALE, 0, 0
+	case AVMALEB:
+		return op_VMALE, 0, 0
+	case AVMALEH:
+		return op_VMALE, 1, 0
+	case AVMALEF:
+		return op_VMALE, 2, 0
+	case AVMALH:
+		return op_VMALH, 0, 0
+	case AVMALHB:
+		return op_VMALH, 0, 0
+	case AVMALHH:
+		return op_VMALH, 1, 0
+	case AVMALHF:
+		return op_VMALH, 2, 0
+	case AVMALO:
+		return op_VMALO, 0, 0
+	case AVMALOB:
+		return op_VMALO, 0, 0
+	case AVMALOH:
+		return op_VMALO, 1, 0
+	case AVMALOF:
+		return op_VMALO, 2, 0
+	case AVMAL:
+		return op_VMAL, 0, 0
+	case AVMALB:
+		return op_VMAL, 0, 0
+	case AVMALHW:
+		return op_VMAL, 1, 0
+	case AVMALF:
+		return op_VMAL, 2, 0
+	case AVMAO:
+		return op_VMAO, 0, 0
+	case AVMAOB:
+		return op_VMAO, 0, 0
+	case AVMAOH:
+		return op_VMAO, 1, 0
+	case AVMAOF:
+		return op_VMAO, 2, 0
+	case AVME:
+		return op_VME, 0, 0
+	case AVMEB:
+		return op_VME, 0, 0
+	case AVMEH:
+		return op_VME, 1, 0
+	case AVMEF:
+		return op_VME, 2, 0
+	case AVMH:
+		return op_VMH, 0, 0
+	case AVMHB:
+		return op_VMH, 0, 0
+	case AVMHH:
+		return op_VMH, 1, 0
+	case AVMHF:
+		return op_VMH, 2, 0
+	case AVMLE:
+		return op_VMLE, 0, 0
+	case AVMLEB:
+		return op_VMLE, 0, 0
+	case AVMLEH:
+		return op_VMLE, 1, 0
+	case AVMLEF:
+		return op_VMLE, 2, 0
+	case AVMLH:
+		return op_VMLH, 0, 0
+	case AVMLHB:
+		return op_VMLH, 0, 0
+	case AVMLHH:
+		return op_VMLH, 1, 0
+	case AVMLHF:
+		return op_VMLH, 2, 0
+	case AVMLO:
+		return op_VMLO, 0, 0
+	case AVMLOB:
+		return op_VMLO, 0, 0
+	case AVMLOH:
+		return op_VMLO, 1, 0
+	case AVMLOF:
+		return op_VMLO, 2, 0
+	case AVML:
+		return op_VML, 0, 0
+	case AVMLB:
+		return op_VML, 0, 0
+	case AVMLHW:
+		return op_VML, 1, 0
+	case AVMLF:
+		return op_VML, 2, 0
+	case AVMO:
+		return op_VMO, 0, 0
+	case AVMOB:
+		return op_VMO, 0, 0
+	case AVMOH:
+		return op_VMO, 1, 0
+	case AVMOF:
+		return op_VMO, 2, 0
+	case AVNO:
+		return op_VNO, 0, 0
+	case AVNOT:
+		return op_VNO, 0, 0
+	case AVO:
+		return op_VO, 0, 0
+	case AVPK:
+		return op_VPK, 0, 0
+	case AVPKH:
+		return op_VPK, 1, 0
+	case AVPKF:
+		return op_VPK, 2, 0
+	case AVPKG:
+		return op_VPK, 3, 0
+	case AVPKLS:
+		return op_VPKLS, 0, 0
+	case AVPKLSH:
+		return op_VPKLS, 1, 0
+	case AVPKLSF:
+		return op_VPKLS, 2, 0
+	case AVPKLSG:
+		return op_VPKLS, 3, 0
+	case AVPKLSHS:
+		return op_VPKLS, 1, 1
+	case AVPKLSFS:
+		return op_VPKLS, 2, 1
+	case AVPKLSGS:
+		return op_VPKLS, 3, 1
+	case AVPKS:
+		return op_VPKS, 0, 0
+	case AVPKSH:
+		return op_VPKS, 1, 0
+	case AVPKSF:
+		return op_VPKS, 2, 0
+	case AVPKSG:
+		return op_VPKS, 3, 0
+	case AVPKSHS:
+		return op_VPKS, 1, 1
+	case AVPKSFS:
+		return op_VPKS, 2, 1
+	case AVPKSGS:
+		return op_VPKS, 3, 1
+	case AVPERM:
+		return op_VPERM, 0, 0
+	case AVPDI:
+		return op_VPDI, 0, 0
+	case AVPOPCT:
+		return op_VPOPCT, 0, 0
+	case AVREP:
+		return op_VREP, 0, 0
+	case AVREPB:
+		return op_VREP, 0, 0
+	case AVREPH:
+		return op_VREP, 1, 0
+	case AVREPF:
+		return op_VREP, 2, 0
+	case AVREPG:
+		return op_VREP, 3, 0
+	case AVREPI:
+		return op_VREPI, 0, 0
+	case AVREPIB:
+		return op_VREPI, 0, 0
+	case AVREPIH:
+		return op_VREPI, 1, 0
+	case AVREPIF:
+		return op_VREPI, 2, 0
+	case AVREPIG:
+		return op_VREPI, 3, 0
+	case AVSCEF:
+		return op_VSCEF, 0, 0
+	case AVSCEG:
+		return op_VSCEG, 0, 0
+	case AVSEL:
+		return op_VSEL, 0, 0
+	case AVSL:
+		return op_VSL, 0, 0
+	case AVSLB:
+		return op_VSLB, 0, 0
+	case AVSLDB:
+		return op_VSLDB, 0, 0
+	case AVSRA:
+		return op_VSRA, 0, 0
+	case AVSRAB:
+		return op_VSRAB, 0, 0
+	case AVSRL:
+		return op_VSRL, 0, 0
+	case AVSRLB:
+		return op_VSRLB, 0, 0
+	case AVSEG:
+		return op_VSEG, 0, 0
+	case AVSEGB:
+		return op_VSEG, 0, 0
+	case AVSEGH:
+		return op_VSEG, 1, 0
+	case AVSEGF:
+		return op_VSEG, 2, 0
+	case AVST:
+		return op_VST, 0, 0
+	case AVSTEH:
+		return op_VSTEH, 0, 0
+	case AVSTEF:
+		return op_VSTEF, 0, 0
+	case AVSTEG:
+		return op_VSTEG, 0, 0
+	case AVSTEB:
+		return op_VSTEB, 0, 0
+	case AVSTM:
+		return op_VSTM, 0, 0
+	case AVSTL:
+		return op_VSTL, 0, 0
+	case AVSTRC:
+		return op_VSTRC, 0, 0
+	case AVSTRCB:
+		return op_VSTRC, 0, 0
+	case AVSTRCH:
+		return op_VSTRC, 1, 0
+	case AVSTRCF:
+		return op_VSTRC, 2, 0
+	case AVSTRCBS:
+		return op_VSTRC, 0, 1
+	case AVSTRCHS:
+		return op_VSTRC, 1, 1
+	case AVSTRCFS:
+		return op_VSTRC, 2, 1
+	case AVSTRCZB:
+		return op_VSTRC, 0, 2
+	case AVSTRCZH:
+		return op_VSTRC, 1, 2
+	case AVSTRCZF:
+		return op_VSTRC, 2, 2
+	case AVSTRCZBS:
+		return op_VSTRC, 0, 3
+	case AVSTRCZHS:
+		return op_VSTRC, 1, 3
+	case AVSTRCZFS:
+		return op_VSTRC, 2, 3
+	case AVS:
+		return op_VS, 0, 0
+	case AVSB:
+		return op_VS, 0, 0
+	case AVSH:
+		return op_VS, 1, 0
+	case AVSF:
+		return op_VS, 2, 0
+	case AVSG:
+		return op_VS, 3, 0
+	case AVSQ:
+		return op_VS, 4, 0
+	case AVSCBI:
+		return op_VSCBI, 0, 0
+	case AVSCBIB:
+		return op_VSCBI, 0, 0
+	case AVSCBIH:
+		return op_VSCBI, 1, 0
+	case AVSCBIF:
+		return op_VSCBI, 2, 0
+	case AVSCBIG:
+		return op_VSCBI, 3, 0
+	case AVSCBIQ:
+		return op_VSCBI, 4, 0
+	case AVSBCBI:
+		return op_VSBCBI, 0, 0
+	case AVSBCBIQ:
+		return op_VSBCBI, 4, 0
+	case AVSBI:
+		return op_VSBI, 0, 0
+	case AVSBIQ:
+		return op_VSBI, 4, 0
+	case AVSUMG:
+		return op_VSUMG, 0, 0
+	case AVSUMGH:
+		return op_VSUMG, 1, 0
+	case AVSUMGF:
+		return op_VSUMG, 2, 0
+	case AVSUMQ:
+		return op_VSUMQ, 0, 0
+	case AVSUMQF:
+		return op_VSUMQ, 1, 0
+	case AVSUMQG:
+		return op_VSUMQ, 2, 0
+	case AVSUM:
+		return op_VSUM, 0, 0
+	case AVSUMB:
+		return op_VSUM, 0, 0
+	case AVSUMH:
+		return op_VSUM, 1, 0
+	case AVTM:
+		return op_VTM, 0, 0
+	case AVUPH:
+		return op_VUPH, 0, 0
+	case AVUPHB:
+		return op_VUPH, 0, 0
+	case AVUPHH:
+		return op_VUPH, 1, 0
+	case AVUPHF:
+		return op_VUPH, 2, 0
+	case AVUPLH:
+		return op_VUPLH, 0, 0
+	case AVUPLHB:
+		return op_VUPLH, 0, 0
+	case AVUPLHH:
+		return op_VUPLH, 1, 0
+	case AVUPLHF:
+		return op_VUPLH, 2, 0
+	case AVUPLL:
+		return op_VUPLL, 0, 0
+	case AVUPLLB:
+		return op_VUPLL, 0, 0
+	case AVUPLLH:
+		return op_VUPLL, 1, 0
+	case AVUPLLF:
+		return op_VUPLL, 2, 0
+	case AVUPL:
+		return op_VUPL, 0, 0
+	case AVUPLB:
+		return op_VUPL, 0, 0
+	case AVUPLHW:
+		return op_VUPL, 1, 0
+	case AVUPLF:
+		return op_VUPL, 2, 0
+	}
+}
+
+// singleElementMask returns the single element mask bits required for the
+// given instruction.
+func singleElementMask(as obj.As) uint32 {
+	switch as {
+	case AWFADB,
+		AWFK,
+		AWFKDB,
+		AWFCEDB,
+		AWFCEDBS,
+		AWFCHDB,
+		AWFCHDBS,
+		AWFCHEDB,
+		AWFCHEDBS,
+		AWFC,
+		AWFCDB,
+		AWCDGB,
+		AWCDLGB,
+		AWCGDB,
+		AWCLGDB,
+		AWFDDB,
+		AWLDEB,
+		AWLEDB,
+		AWFMDB,
+		AWFMADB,
+		AWFMSDB,
+		AWFPSODB,
+		AWFLCDB,
+		AWFLNDB,
+		AWFLPDB,
+		AWFSQDB,
+		AWFSDB,
+		AWFTCIDB,
+		AWFIDB:
+		return 8
+	}
+	return 0
+}
diff --git a/vendor/github.com/google/gops/internal/obj/stack.go b/vendor/github.com/google/gops/internal/obj/stack.go
new file mode 100644
index 00000000..687adf20
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/stack.go
@@ -0,0 +1,21 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+// For the linkers. Must match Go definitions.
+// TODO(rsc): Share Go definitions with linkers directly.
+
+const (
+	STACKSYSTEM = 0
+	StackSystem = STACKSYSTEM
+	StackBig    = 4096
+	StackGuard  = 880*stackGuardMultiplier + StackSystem
+	StackSmall  = 128
+	StackLimit  = StackGuard - StackSystem - StackSmall
+)
+
+const (
+	StackPreempt = -1314 // 0xfff...fade
+)
diff --git a/vendor/github.com/google/gops/internal/obj/stringer.go b/vendor/github.com/google/gops/internal/obj/stringer.go
new file mode 100644
index 00000000..2ba213e5
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/stringer.go
@@ -0,0 +1,104 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ignore
+
+// This is a mini version of the stringer tool customized for the Anames table
+// in the architecture support for obj.
+// This version just generates the slice of strings, not the String method.
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	input  = flag.String("i", "", "input file name")
+	output = flag.String("o", "", "output file name")
+	pkg    = flag.String("p", "", "package name")
+)
+
+var Are = regexp.MustCompile(`^\tA([A-Z0-9]+)`)
+
+func main() {
+	flag.Parse()
+	if *input == "" || *output == "" || *pkg == "" {
+		flag.Usage()
+		os.Exit(2)
+	}
+	in, err := os.Open(*input)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fd, err := os.Create(*output)
+	if err != nil {
+		log.Fatal(err)
+	}
+	out := bufio.NewWriter(fd)
+	defer out.Flush()
+	var on = false
+	s := bufio.NewScanner(in)
+	first := true
+	for s.Scan() {
+		line := s.Text()
+		if !on {
+			// First relevant line contains "= obj.ABase".
+			// If we find it, delete the = so we don't stop immediately.
+			const prefix = "= obj.ABase"
+			index := strings.Index(line, prefix)
+			if index < 0 {
+				continue
+			}
+			// It's on. Start with the header.
+			fmt.Fprintf(out, header, *input, *output, *pkg, *pkg)
+			on = true
+			line = line[:index]
+		}
+		// Strip comments so their text won't defeat our heuristic.
+		index := strings.Index(line, "//")
+		if index > 0 {
+			line = line[:index]
+		}
+		index = strings.Index(line, "/*")
+		if index > 0 {
+			line = line[:index]
+		}
+		// Termination condition: Any line with an = changes the sequence,
+		// so stop there, and stop at a closing brace.
+		if strings.HasPrefix(line, "}") || strings.ContainsRune(line, '=') {
+			break
+		}
+		sub := Are.FindStringSubmatch(line)
+		if len(sub) < 2 {
+			continue
+		}
+		if first {
+			fmt.Fprintf(out, "\tobj.A_ARCHSPECIFIC: %q,\n", sub[1])
+			first = false
+		} else {
+			fmt.Fprintf(out, "\t%q,\n", sub[1])
+		}
+	}
+	fmt.Fprintln(out, "}")
+	if s.Err() != nil {
+		log.Fatal(err)
+	}
+}
+
+const header = `// Generated by stringer -i %s -o %s -p %s
+// Do not edit.
+
+package %s
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+`
diff --git a/vendor/github.com/google/gops/internal/obj/sym.go b/vendor/github.com/google/gops/internal/obj/sym.go
new file mode 100644
index 00000000..84de5b61
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/sym.go
@@ -0,0 +1,88 @@
+// Derived from Inferno utils/6l/obj.c and utils/6l/span.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package obj
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+)
+
+func Linknew(arch *LinkArch) *Link {
+	ctxt := new(Link)
+	ctxt.Hash = make(map[SymVer]*LSym)
+	ctxt.Arch = arch
+	ctxt.Version = HistVersion
+
+	var buf string
+	buf, _ = os.Getwd()
+	if buf == "" {
+		buf = "/???"
+	}
+	buf = filepath.ToSlash(buf)
+	ctxt.Pathname = buf
+
+	ctxt.LineHist.GOROOT = GOROOT
+	ctxt.LineHist.Dir = ctxt.Pathname
+
+	ctxt.Headtype.Set(GOOS)
+	if ctxt.Headtype < 0 {
+		log.Fatalf("unknown goos %s", GOOS)
+	}
+
+	ctxt.Flag_optimize = true
+	ctxt.Framepointer_enabled = Framepointer_enabled(GOOS, arch.Name)
+	return ctxt
+}
+
+func Linklookup(ctxt *Link, name string, v int) *LSym {
+	s := ctxt.Hash[SymVer{name, v}]
+	if s != nil {
+		return s
+	}
+
+	s = &LSym{
+		Name:    name,
+		Type:    0,
+		Version: int16(v),
+		Size:    0,
+	}
+	ctxt.Hash[SymVer{name, v}] = s
+	return s
+}
+
+func Linksymfmt(s *LSym) string {
+	if s == nil {
+		return "<nil>"
+	}
+	return s.Name
+}
diff --git a/vendor/github.com/google/gops/internal/obj/symkind_string.go b/vendor/github.com/google/gops/internal/obj/symkind_string.go
new file mode 100644
index 00000000..fef8c355
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/symkind_string.go
@@ -0,0 +1,16 @@
+// Code generated by "stringer -type=SymKind"; DO NOT EDIT
+
+package obj
+
+import "fmt"
+
+const _SymKind_name = "SxxxSTEXTSELFRXSECTSTYPESSTRINGSGOSTRINGSGOFUNCSGCBITSSRODATASFUNCTABSELFROSECTSMACHOPLTSTYPERELROSSTRINGRELROSGOSTRINGRELROSGOFUNCRELROSGCBITSRELROSRODATARELROSFUNCTABRELROSTYPELINKSITABLINKSSYMTABSPCLNTABSELFSECTSMACHOSMACHOGOTSWINDOWSSELFGOTSNOPTRDATASINITARRSDATASBSSSNOPTRBSSSTLSBSSSXREFSMACHOSYMSTRSMACHOSYMTABSMACHOINDIRECTPLTSMACHOINDIRECTGOTSFILESFILEPATHSCONSTSDYNIMPORTSHOSTOBJSDWARFSECTSDWARFINFO"
+
+var _SymKind_index = [...]uint16{0, 4, 9, 19, 24, 31, 40, 47, 54, 61, 69, 79, 88, 98, 110, 124, 136, 148, 160, 173, 182, 191, 198, 206, 214, 220, 229, 237, 244, 254, 262, 267, 271, 280, 287, 292, 304, 316, 333, 350, 355, 364, 370, 380, 388, 398, 408}
+
+func (i SymKind) String() string {
+	if i < 0 || i >= SymKind(len(_SymKind_index)-1) {
+		return fmt.Sprintf("SymKind(%d)", i)
+	}
+	return _SymKind_name[_SymKind_index[i]:_SymKind_index[i+1]]
+}
diff --git a/vendor/github.com/google/gops/internal/obj/textflag.go b/vendor/github.com/google/gops/internal/obj/textflag.go
new file mode 100644
index 00000000..d8a52da4
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/textflag.go
@@ -0,0 +1,50 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This file defines flags attached to various functions
+// and data objects. The compilers, assemblers, and linker must
+// all agree on these values.
+
+package obj
+
+const (
+	// Don't profile the marked routine.
+	//
+	// Deprecated: Not implemented, do not use.
+	NOPROF = 1
+
+	// It is ok for the linker to get multiple of these symbols. It will
+	// pick one of the duplicates to use.
+	DUPOK = 2
+
+	// Don't insert stack check preamble.
+	NOSPLIT = 4
+
+	// Put this data in a read-only section.
+	RODATA = 8
+
+	// This data contains no pointers.
+	NOPTR = 16
+
+	// This is a wrapper function and should not count as disabling 'recover'.
+	WRAPPER = 32
+
+	// This function uses its incoming context register.
+	NEEDCTXT = 64
+
+	// When passed to ggloblsym, causes Local to be set to true on the LSym it creates.
+	LOCAL = 128
+
+	// Allocate a word of thread local storage and store the offset from the
+	// thread local base to the thread local storage in this variable.
+	TLSBSS = 256
+
+	// Do not insert instructions to allocate a stack frame for this function.
+	// Only valid on functions that declare a frame size of 0.
+	// TODO(mwhudson): only implemented for ppc64x at present.
+	NOFRAME = 512
+
+	// Function can call reflect.Type.Method or reflect.Type.MethodByName.
+	REFLECTMETHOD = 1024
+)
diff --git a/vendor/github.com/google/gops/internal/obj/typekind.go b/vendor/github.com/google/gops/internal/obj/typekind.go
new file mode 100644
index 00000000..21932716
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/typekind.go
@@ -0,0 +1,41 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+// Must match runtime and reflect.
+// Included by cmd/gc.
+
+const (
+	KindBool = 1 + iota
+	KindInt
+	KindInt8
+	KindInt16
+	KindInt32
+	KindInt64
+	KindUint
+	KindUint8
+	KindUint16
+	KindUint32
+	KindUint64
+	KindUintptr
+	KindFloat32
+	KindFloat64
+	KindComplex64
+	KindComplex128
+	KindArray
+	KindChan
+	KindFunc
+	KindInterface
+	KindMap
+	KindPtr
+	KindSlice
+	KindString
+	KindStruct
+	KindUnsafePointer
+	KindDirectIface = 1 << 5
+	KindGCProg      = 1 << 6
+	KindNoPointers  = 1 << 7
+	KindMask        = (1 << 5) - 1
+)
diff --git a/vendor/github.com/google/gops/internal/obj/util.go b/vendor/github.com/google/gops/internal/obj/util.go
new file mode 100644
index 00000000..9f1c6f08
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/util.go
@@ -0,0 +1,499 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package obj
+
+import (
+	"bytes"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"time"
+)
+
+const REG_NONE = 0
+
+var start time.Time
+
+func Cputime() float64 {
+	if start.IsZero() {
+		start = time.Now()
+	}
+	return time.Since(start).Seconds()
+}
+
+func envOr(key, value string) string {
+	if x := os.Getenv(key); x != "" {
+		return x
+	}
+	return value
+}
+
+var (
+	GOROOT  = envOr("GOROOT", defaultGOROOT)
+	GOARCH  = envOr("GOARCH", defaultGOARCH)
+	GOOS    = envOr("GOOS", defaultGOOS)
+	GO386   = envOr("GO386", defaultGO386)
+	GOARM   = goarm()
+	Version = version
+)
+
+func goarm() int {
+	switch v := envOr("GOARM", defaultGOARM); v {
+	case "5":
+		return 5
+	case "6":
+		return 6
+	case "7":
+		return 7
+	}
+	// Fail here, rather than validate at multiple call sites.
+	log.Fatalf("Invalid GOARM value. Must be 5, 6, or 7.")
+	panic("unreachable")
+}
+
+func Getgoextlinkenabled() string {
+	return envOr("GO_EXTLINK_ENABLED", defaultGO_EXTLINK_ENABLED)
+}
+
+func (p *Prog) Line() string {
+	return p.Ctxt.LineHist.LineString(int(p.Lineno))
+}
+
+var armCondCode = []string{
+	".EQ",
+	".NE",
+	".CS",
+	".CC",
+	".MI",
+	".PL",
+	".VS",
+	".VC",
+	".HI",
+	".LS",
+	".GE",
+	".LT",
+	".GT",
+	".LE",
+	"",
+	".NV",
+}
+
+/* ARM scond byte */
+const (
+	C_SCOND     = (1 << 4) - 1
+	C_SBIT      = 1 << 4
+	C_PBIT      = 1 << 5
+	C_WBIT      = 1 << 6
+	C_FBIT      = 1 << 7
+	C_UBIT      = 1 << 7
+	C_SCOND_XOR = 14
+)
+
+// CConv formats ARM condition codes.
+func CConv(s uint8) string {
+	if s == 0 {
+		return ""
+	}
+	sc := armCondCode[(s&C_SCOND)^C_SCOND_XOR]
+	if s&C_SBIT != 0 {
+		sc += ".S"
+	}
+	if s&C_PBIT != 0 {
+		sc += ".P"
+	}
+	if s&C_WBIT != 0 {
+		sc += ".W"
+	}
+	if s&C_UBIT != 0 { /* ambiguous with FBIT */
+		sc += ".U"
+	}
+	return sc
+}
+
+func (p *Prog) String() string {
+	if p == nil {
+		return "<nil Prog>"
+	}
+
+	if p.Ctxt == nil {
+		return "<Prog without ctxt>"
+	}
+
+	sc := CConv(p.Scond)
+
+	var buf bytes.Buffer
+
+	fmt.Fprintf(&buf, "%.5d (%v)\t%v%s", p.Pc, p.Line(), p.As, sc)
+	sep := "\t"
+	quadOpAmd64 := p.RegTo2 == -1
+	if quadOpAmd64 {
+		fmt.Fprintf(&buf, "%s$%d", sep, p.From3.Offset)
+		sep = ", "
+	}
+	if p.From.Type != TYPE_NONE {
+		fmt.Fprintf(&buf, "%s%v", sep, Dconv(p, &p.From))
+		sep = ", "
+	}
+	if p.Reg != REG_NONE {
+		// Should not happen but might as well show it if it does.
+		fmt.Fprintf(&buf, "%s%v", sep, Rconv(int(p.Reg)))
+		sep = ", "
+	}
+	if p.From3Type() != TYPE_NONE {
+		if p.From3.Type == TYPE_CONST && p.As == ATEXT {
+			// Special case - omit $.
+			fmt.Fprintf(&buf, "%s%d", sep, p.From3.Offset)
+		} else if quadOpAmd64 {
+			fmt.Fprintf(&buf, "%s%v", sep, Rconv(int(p.From3.Reg)))
+		} else {
+			fmt.Fprintf(&buf, "%s%v", sep, Dconv(p, p.From3))
+		}
+		sep = ", "
+	}
+	if p.To.Type != TYPE_NONE {
+		fmt.Fprintf(&buf, "%s%v", sep, Dconv(p, &p.To))
+	}
+	if p.RegTo2 != REG_NONE && !quadOpAmd64 {
+		fmt.Fprintf(&buf, "%s%v", sep, Rconv(int(p.RegTo2)))
+	}
+	return buf.String()
+}
+
+func (ctxt *Link) NewProg() *Prog {
+	var p *Prog
+	if i := ctxt.allocIdx; i < len(ctxt.progs) {
+		p = &ctxt.progs[i]
+		ctxt.allocIdx = i + 1
+	} else {
+		p = new(Prog) // should be the only call to this; all others should use ctxt.NewProg
+	}
+	p.Ctxt = ctxt
+	return p
+}
+func (ctxt *Link) freeProgs() {
+	s := ctxt.progs[:ctxt.allocIdx]
+	for i := range s {
+		s[i] = Prog{}
+	}
+	ctxt.allocIdx = 0
+}
+
+func (ctxt *Link) Line(n int) string {
+	return ctxt.LineHist.LineString(n)
+}
+
+func Getcallerpc(interface{}) uintptr {
+	return 1
+}
+
+func (ctxt *Link) Dconv(a *Addr) string {
+	return Dconv(nil, a)
+}
+
+func Dconv(p *Prog, a *Addr) string {
+	var str string
+
+	switch a.Type {
+	default:
+		str = fmt.Sprintf("type=%d", a.Type)
+
+	case TYPE_NONE:
+		str = ""
+		if a.Name != NAME_NONE || a.Reg != 0 || a.Sym != nil {
+			str = fmt.Sprintf("%v(%v)(NONE)", Mconv(a), Rconv(int(a.Reg)))
+		}
+
+	case TYPE_REG:
+		// TODO(rsc): This special case is for x86 instructions like
+		//	PINSRQ	CX,$1,X6
+		// where the $1 is included in the p->to Addr.
+		// Move into a new field.
+		if a.Offset != 0 {
+			str = fmt.Sprintf("$%d,%v", a.Offset, Rconv(int(a.Reg)))
+			break
+		}
+
+		str = Rconv(int(a.Reg))
+		if a.Name != NAME_NONE || a.Sym != nil {
+			str = fmt.Sprintf("%v(%v)(REG)", Mconv(a), Rconv(int(a.Reg)))
+		}
+
+	case TYPE_BRANCH:
+		if a.Sym != nil {
+			str = fmt.Sprintf("%s(SB)", a.Sym.Name)
+		} else if p != nil && p.Pcond != nil {
+			str = fmt.Sprint(p.Pcond.Pc)
+		} else if a.Val != nil {
+			str = fmt.Sprint(a.Val.(*Prog).Pc)
+		} else {
+			str = fmt.Sprintf("%d(PC)", a.Offset)
+		}
+
+	case TYPE_INDIR:
+		str = fmt.Sprintf("*%s", Mconv(a))
+
+	case TYPE_MEM:
+		str = Mconv(a)
+		if a.Index != REG_NONE {
+			str += fmt.Sprintf("(%v*%d)", Rconv(int(a.Index)), int(a.Scale))
+		}
+
+	case TYPE_CONST:
+		if a.Reg != 0 {
+			str = fmt.Sprintf("$%v(%v)", Mconv(a), Rconv(int(a.Reg)))
+		} else {
+			str = fmt.Sprintf("$%v", Mconv(a))
+		}
+
+	case TYPE_TEXTSIZE:
+		if a.Val.(int32) == ArgsSizeUnknown {
+			str = fmt.Sprintf("$%d", a.Offset)
+		} else {
+			str = fmt.Sprintf("$%d-%d", a.Offset, a.Val.(int32))
+		}
+
+	case TYPE_FCONST:
+		str = fmt.Sprintf("%.17g", a.Val.(float64))
+		// Make sure 1 prints as 1.0
+		if !strings.ContainsAny(str, ".e") {
+			str += ".0"
+		}
+		str = fmt.Sprintf("$(%s)", str)
+
+	case TYPE_SCONST:
+		str = fmt.Sprintf("$%q", a.Val.(string))
+
+	case TYPE_ADDR:
+		str = fmt.Sprintf("$%s", Mconv(a))
+
+	case TYPE_SHIFT:
+		v := int(a.Offset)
+		ops := "<<>>->@>"
+		switch GOARCH {
+		case "arm":
+			op := ops[((v>>5)&3)<<1:]
+			if v&(1<<4) != 0 {
+				str = fmt.Sprintf("R%d%c%cR%d", v&15, op[0], op[1], (v>>8)&15)
+			} else {
+				str = fmt.Sprintf("R%d%c%c%d", v&15, op[0], op[1], (v>>7)&31)
+			}
+			if a.Reg != 0 {
+				str += fmt.Sprintf("(%v)", Rconv(int(a.Reg)))
+			}
+		case "arm64":
+			op := ops[((v>>22)&3)<<1:]
+			str = fmt.Sprintf("R%d%c%c%d", (v>>16)&31, op[0], op[1], (v>>10)&63)
+		default:
+			panic("TYPE_SHIFT is not supported on " + GOARCH)
+		}
+
+	case TYPE_REGREG:
+		str = fmt.Sprintf("(%v, %v)", Rconv(int(a.Reg)), Rconv(int(a.Offset)))
+
+	case TYPE_REGREG2:
+		str = fmt.Sprintf("%v, %v", Rconv(int(a.Reg)), Rconv(int(a.Offset)))
+
+	case TYPE_REGLIST:
+		str = regListConv(int(a.Offset))
+	}
+
+	return str
+}
+
+func Mconv(a *Addr) string {
+	var str string
+
+	switch a.Name {
+	default:
+		str = fmt.Sprintf("name=%d", a.Name)
+
+	case NAME_NONE:
+		switch {
+		case a.Reg == REG_NONE:
+			str = fmt.Sprint(a.Offset)
+		case a.Offset == 0:
+			str = fmt.Sprintf("(%v)", Rconv(int(a.Reg)))
+		case a.Offset != 0:
+			str = fmt.Sprintf("%d(%v)", a.Offset, Rconv(int(a.Reg)))
+		}
+
+	case NAME_EXTERN:
+		if a.Sym != nil {
+			str = fmt.Sprintf("%s%s(SB)", a.Sym.Name, offConv(a.Offset))
+		} else {
+			str = fmt.Sprintf("%s(SB)", offConv(a.Offset))
+		}
+
+	case NAME_GOTREF:
+		if a.Sym != nil {
+			str = fmt.Sprintf("%s%s@GOT(SB)", a.Sym.Name, offConv(a.Offset))
+		} else {
+			str = fmt.Sprintf("%s@GOT(SB)", offConv(a.Offset))
+		}
+
+	case NAME_STATIC:
+		if a.Sym != nil {
+			str = fmt.Sprintf("%s<>%s(SB)", a.Sym.Name, offConv(a.Offset))
+		} else {
+			str = fmt.Sprintf("<>%s(SB)", offConv(a.Offset))
+		}
+
+	case NAME_AUTO:
+		if a.Sym != nil {
+			str = fmt.Sprintf("%s%s(SP)", a.Sym.Name, offConv(a.Offset))
+		} else {
+			str = fmt.Sprintf("%s(SP)", offConv(a.Offset))
+		}
+
+	case NAME_PARAM:
+		if a.Sym != nil {
+			str = fmt.Sprintf("%s%s(FP)", a.Sym.Name, offConv(a.Offset))
+		} else {
+			str = fmt.Sprintf("%s(FP)", offConv(a.Offset))
+		}
+	}
+	return str
+}
+
+func offConv(off int64) string {
+	if off == 0 {
+		return ""
+	}
+	return fmt.Sprintf("%+d", off)
+}
+
+type regSet struct {
+	lo    int
+	hi    int
+	Rconv func(int) string
+}
+
+// Few enough architectures that a linear scan is fastest.
+// Not even worth sorting.
+var regSpace []regSet
+
+/*
+	Each architecture defines a register space as a unique
+	integer range.
+	Here is the list of architectures and the base of their register spaces.
+*/
+
+const (
+	// Because of masking operations in the encodings, each register
+	// space should start at 0 modulo some power of 2.
+	RBase386    = 1 * 1024
+	RBaseAMD64  = 2 * 1024
+	RBaseARM    = 3 * 1024
+	RBasePPC64  = 4 * 1024  // range [4k, 8k)
+	RBaseARM64  = 8 * 1024  // range [8k, 13k)
+	RBaseMIPS64 = 13 * 1024 // range [13k, 14k)
+	RBaseS390X  = 14 * 1024 // range [14k, 15k)
+)
+
+// RegisterRegister binds a pretty-printer (Rconv) for register
+// numbers to a given register number range. Lo is inclusive,
+// hi exclusive (valid registers are lo through hi-1).
+func RegisterRegister(lo, hi int, Rconv func(int) string) {
+	regSpace = append(regSpace, regSet{lo, hi, Rconv})
+}
+
+func Rconv(reg int) string {
+	if reg == REG_NONE {
+		return "NONE"
+	}
+	for i := range regSpace {
+		rs := &regSpace[i]
+		if rs.lo <= reg && reg < rs.hi {
+			return rs.Rconv(reg)
+		}
+	}
+	return fmt.Sprintf("R???%d", reg)
+}
+
+func regListConv(list int) string {
+	str := ""
+
+	for i := 0; i < 16; i++ { // TODO: 16 is ARM-specific.
+		if list&(1<<uint(i)) != 0 {
+			if str == "" {
+				str += "["
+			} else {
+				str += ","
+			}
+			// This is ARM-specific; R10 is g.
+			if i == 10 {
+				str += "g"
+			} else {
+				str += fmt.Sprintf("R%d", i)
+			}
+		}
+	}
+
+	str += "]"
+	return str
+}
+
+type opSet struct {
+	lo    As
+	names []string
+}
+
+// Not even worth sorting
+var aSpace []opSet
+
+// RegisterOpcode binds a list of instruction names
+// to a given instruction number range.
+func RegisterOpcode(lo As, Anames []string) {
+	if len(Anames) > AllowedOpCodes {
+		panic(fmt.Sprintf("too many instructions, have %d max %d", len(Anames), AllowedOpCodes))
+	}
+	aSpace = append(aSpace, opSet{lo, Anames})
+}
+
+func (a As) String() string {
+	if 0 <= a && int(a) < len(Anames) {
+		return Anames[a]
+	}
+	for i := range aSpace {
+		as := &aSpace[i]
+		if as.lo <= a && int(a-as.lo) < len(as.names) {
+			return as.names[a-as.lo]
+		}
+	}
+	return fmt.Sprintf("A???%d", a)
+}
+
+var Anames = []string{
+	"XXX",
+	"CALL",
+	"DUFFCOPY",
+	"DUFFZERO",
+	"END",
+	"FUNCDATA",
+	"JMP",
+	"NOP",
+	"PCDATA",
+	"RET",
+	"TEXT",
+	"TYPE",
+	"UNDEF",
+	"USEFIELD",
+	"VARDEF",
+	"VARKILL",
+	"VARLIVE",
+}
+
+func Bool2int(b bool) int {
+	// The compiler currently only optimizes this form.
+	// See issue 6011.
+	var i int
+	if b {
+		i = 1
+	} else {
+		i = 0
+	}
+	return i
+}
diff --git a/vendor/github.com/google/gops/internal/obj/x86/a.out.go b/vendor/github.com/google/gops/internal/obj/x86/a.out.go
new file mode 100644
index 00000000..34480393
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/x86/a.out.go
@@ -0,0 +1,1009 @@
+// Inferno utils/6c/6.out.h
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6c/6.out.h
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package x86
+
+import "github.com/google/gops/internal/obj"
+
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p x86
+
+const (
+	/* mark flags */
+	DONE          = 1 << iota
+	PRESERVEFLAGS // not allowed to clobber flags
+)
+
+/*
+ *	amd64
+ */
+const (
+	AAAA = obj.ABaseAMD64 + obj.A_ARCHSPECIFIC + iota
+	AAAD
+	AAAM
+	AAAS
+	AADCB
+	AADCL
+	AADCW
+	AADDB
+	AADDL
+	AADDW
+	AADJSP
+	AANDB
+	AANDL
+	AANDW
+	AARPL
+	ABOUNDL
+	ABOUNDW
+	ABSFL
+	ABSFW
+	ABSRL
+	ABSRW
+	ABTL
+	ABTW
+	ABTCL
+	ABTCW
+	ABTRL
+	ABTRW
+	ABTSL
+	ABTSW
+	ABYTE
+	ACLC
+	ACLD
+	ACLI
+	ACLTS
+	ACMC
+	ACMPB
+	ACMPL
+	ACMPW
+	ACMPSB
+	ACMPSL
+	ACMPSW
+	ADAA
+	ADAS
+	ADECB
+	ADECL
+	ADECQ
+	ADECW
+	ADIVB
+	ADIVL
+	ADIVW
+	AENTER
+	AHADDPD
+	AHADDPS
+	AHLT
+	AHSUBPD
+	AHSUBPS
+	AIDIVB
+	AIDIVL
+	AIDIVW
+	AIMULB
+	AIMULL
+	AIMULW
+	AINB
+	AINL
+	AINW
+	AINCB
+	AINCL
+	AINCQ
+	AINCW
+	AINSB
+	AINSL
+	AINSW
+	AINT
+	AINTO
+	AIRETL
+	AIRETW
+	AJCC // >= unsigned
+	AJCS // < unsigned
+	AJCXZL
+	AJEQ // == (zero)
+	AJGE // >= signed
+	AJGT // > signed
+	AJHI // > unsigned
+	AJLE // <= signed
+	AJLS // <= unsigned
+	AJLT // < signed
+	AJMI // sign bit set (negative)
+	AJNE // != (nonzero)
+	AJOC // overflow clear
+	AJOS // overflow set
+	AJPC // parity clear
+	AJPL // sign bit clear (positive)
+	AJPS // parity set
+	ALAHF
+	ALARL
+	ALARW
+	ALEAL
+	ALEAW
+	ALEAVEL
+	ALEAVEW
+	ALOCK
+	ALODSB
+	ALODSL
+	ALODSW
+	ALONG
+	ALOOP
+	ALOOPEQ
+	ALOOPNE
+	ALSLL
+	ALSLW
+	AMOVB
+	AMOVL
+	AMOVW
+	AMOVBLSX
+	AMOVBLZX
+	AMOVBQSX
+	AMOVBQZX
+	AMOVBWSX
+	AMOVBWZX
+	AMOVWLSX
+	AMOVWLZX
+	AMOVWQSX
+	AMOVWQZX
+	AMOVSB
+	AMOVSL
+	AMOVSW
+	AMULB
+	AMULL
+	AMULW
+	ANEGB
+	ANEGL
+	ANEGW
+	ANOTB
+	ANOTL
+	ANOTW
+	AORB
+	AORL
+	AORW
+	AOUTB
+	AOUTL
+	AOUTW
+	AOUTSB
+	AOUTSL
+	AOUTSW
+	APAUSE
+	APOPAL
+	APOPAW
+	APOPCNTW
+	APOPCNTL
+	APOPCNTQ
+	APOPFL
+	APOPFW
+	APOPL
+	APOPW
+	APUSHAL
+	APUSHAW
+	APUSHFL
+	APUSHFW
+	APUSHL
+	APUSHW
+	ARCLB
+	ARCLL
+	ARCLW
+	ARCRB
+	ARCRL
+	ARCRW
+	AREP
+	AREPN
+	AROLB
+	AROLL
+	AROLW
+	ARORB
+	ARORL
+	ARORW
+	ASAHF
+	ASALB
+	ASALL
+	ASALW
+	ASARB
+	ASARL
+	ASARW
+	ASBBB
+	ASBBL
+	ASBBW
+	ASCASB
+	ASCASL
+	ASCASW
+	ASETCC
+	ASETCS
+	ASETEQ
+	ASETGE
+	ASETGT
+	ASETHI
+	ASETLE
+	ASETLS
+	ASETLT
+	ASETMI
+	ASETNE
+	ASETOC
+	ASETOS
+	ASETPC
+	ASETPL
+	ASETPS
+	ACDQ
+	ACWD
+	ASHLB
+	ASHLL
+	ASHLW
+	ASHRB
+	ASHRL
+	ASHRW
+	ASTC
+	ASTD
+	ASTI
+	ASTOSB
+	ASTOSL
+	ASTOSW
+	ASUBB
+	ASUBL
+	ASUBW
+	ASYSCALL
+	ATESTB
+	ATESTL
+	ATESTW
+	AVERR
+	AVERW
+	AWAIT
+	AWORD
+	AXCHGB
+	AXCHGL
+	AXCHGW
+	AXLAT
+	AXORB
+	AXORL
+	AXORW
+
+	AFMOVB
+	AFMOVBP
+	AFMOVD
+	AFMOVDP
+	AFMOVF
+	AFMOVFP
+	AFMOVL
+	AFMOVLP
+	AFMOVV
+	AFMOVVP
+	AFMOVW
+	AFMOVWP
+	AFMOVX
+	AFMOVXP
+
+	AFCOMD
+	AFCOMDP
+	AFCOMDPP
+	AFCOMF
+	AFCOMFP
+	AFCOML
+	AFCOMLP
+	AFCOMW
+	AFCOMWP
+	AFUCOM
+	AFUCOMP
+	AFUCOMPP
+
+	AFADDDP
+	AFADDW
+	AFADDL
+	AFADDF
+	AFADDD
+
+	AFMULDP
+	AFMULW
+	AFMULL
+	AFMULF
+	AFMULD
+
+	AFSUBDP
+	AFSUBW
+	AFSUBL
+	AFSUBF
+	AFSUBD
+
+	AFSUBRDP
+	AFSUBRW
+	AFSUBRL
+	AFSUBRF
+	AFSUBRD
+
+	AFDIVDP
+	AFDIVW
+	AFDIVL
+	AFDIVF
+	AFDIVD
+
+	AFDIVRDP
+	AFDIVRW
+	AFDIVRL
+	AFDIVRF
+	AFDIVRD
+
+	AFXCHD
+	AFFREE
+
+	AFLDCW
+	AFLDENV
+	AFRSTOR
+	AFSAVE
+	AFSTCW
+	AFSTENV
+	AFSTSW
+
+	AF2XM1
+	AFABS
+	AFCHS
+	AFCLEX
+	AFCOS
+	AFDECSTP
+	AFINCSTP
+	AFINIT
+	AFLD1
+	AFLDL2E
+	AFLDL2T
+	AFLDLG2
+	AFLDLN2
+	AFLDPI
+	AFLDZ
+	AFNOP
+	AFPATAN
+	AFPREM
+	AFPREM1
+	AFPTAN
+	AFRNDINT
+	AFSCALE
+	AFSIN
+	AFSINCOS
+	AFSQRT
+	AFTST
+	AFXAM
+	AFXTRACT
+	AFYL2X
+	AFYL2XP1
+
+	// extra 32-bit operations
+	ACMPXCHGB
+	ACMPXCHGL
+	ACMPXCHGW
+	ACMPXCHG8B
+	ACPUID
+	AINVD
+	AINVLPG
+	ALFENCE
+	AMFENCE
+	AMOVNTIL
+	ARDMSR
+	ARDPMC
+	ARDTSC
+	ARSM
+	ASFENCE
+	ASYSRET
+	AWBINVD
+	AWRMSR
+	AXADDB
+	AXADDL
+	AXADDW
+
+	// conditional move
+	ACMOVLCC
+	ACMOVLCS
+	ACMOVLEQ
+	ACMOVLGE
+	ACMOVLGT
+	ACMOVLHI
+	ACMOVLLE
+	ACMOVLLS
+	ACMOVLLT
+	ACMOVLMI
+	ACMOVLNE
+	ACMOVLOC
+	ACMOVLOS
+	ACMOVLPC
+	ACMOVLPL
+	ACMOVLPS
+	ACMOVQCC
+	ACMOVQCS
+	ACMOVQEQ
+	ACMOVQGE
+	ACMOVQGT
+	ACMOVQHI
+	ACMOVQLE
+	ACMOVQLS
+	ACMOVQLT
+	ACMOVQMI
+	ACMOVQNE
+	ACMOVQOC
+	ACMOVQOS
+	ACMOVQPC
+	ACMOVQPL
+	ACMOVQPS
+	ACMOVWCC
+	ACMOVWCS
+	ACMOVWEQ
+	ACMOVWGE
+	ACMOVWGT
+	ACMOVWHI
+	ACMOVWLE
+	ACMOVWLS
+	ACMOVWLT
+	ACMOVWMI
+	ACMOVWNE
+	ACMOVWOC
+	ACMOVWOS
+	ACMOVWPC
+	ACMOVWPL
+	ACMOVWPS
+
+	// 64-bit
+	AADCQ
+	AADDQ
+	AANDQ
+	ABSFQ
+	ABSRQ
+	ABTCQ
+	ABTQ
+	ABTRQ
+	ABTSQ
+	ACMPQ
+	ACMPSQ
+	ACMPXCHGQ
+	ACQO
+	ADIVQ
+	AIDIVQ
+	AIMULQ
+	AIRETQ
+	AJCXZQ
+	ALEAQ
+	ALEAVEQ
+	ALODSQ
+	AMOVQ
+	AMOVLQSX
+	AMOVLQZX
+	AMOVNTIQ
+	AMOVSQ
+	AMULQ
+	ANEGQ
+	ANOTQ
+	AORQ
+	APOPFQ
+	APOPQ
+	APUSHFQ
+	APUSHQ
+	ARCLQ
+	ARCRQ
+	AROLQ
+	ARORQ
+	AQUAD
+	ASALQ
+	ASARQ
+	ASBBQ
+	ASCASQ
+	ASHLQ
+	ASHRQ
+	ASTOSQ
+	ASUBQ
+	ATESTQ
+	AXADDQ
+	AXCHGQ
+	AXORQ
+	AXGETBV
+
+	// media
+	AADDPD
+	AADDPS
+	AADDSD
+	AADDSS
+	AANDNL
+	AANDNQ
+	AANDNPD
+	AANDNPS
+	AANDPD
+	AANDPS
+	ABEXTRL
+	ABEXTRQ
+	ABLSIL
+	ABLSIQ
+	ABLSMSKL
+	ABLSMSKQ
+	ABLSRL
+	ABLSRQ
+	ABZHIL
+	ABZHIQ
+	ACMPPD
+	ACMPPS
+	ACMPSD
+	ACMPSS
+	ACOMISD
+	ACOMISS
+	ACVTPD2PL
+	ACVTPD2PS
+	ACVTPL2PD
+	ACVTPL2PS
+	ACVTPS2PD
+	ACVTPS2PL
+	ACVTSD2SL
+	ACVTSD2SQ
+	ACVTSD2SS
+	ACVTSL2SD
+	ACVTSL2SS
+	ACVTSQ2SD
+	ACVTSQ2SS
+	ACVTSS2SD
+	ACVTSS2SL
+	ACVTSS2SQ
+	ACVTTPD2PL
+	ACVTTPS2PL
+	ACVTTSD2SL
+	ACVTTSD2SQ
+	ACVTTSS2SL
+	ACVTTSS2SQ
+	ADIVPD
+	ADIVPS
+	ADIVSD
+	ADIVSS
+	AEMMS
+	AFXRSTOR
+	AFXRSTOR64
+	AFXSAVE
+	AFXSAVE64
+	ALDDQU
+	ALDMXCSR
+	AMASKMOVOU
+	AMASKMOVQ
+	AMAXPD
+	AMAXPS
+	AMAXSD
+	AMAXSS
+	AMINPD
+	AMINPS
+	AMINSD
+	AMINSS
+	AMOVAPD
+	AMOVAPS
+	AMOVOU
+	AMOVHLPS
+	AMOVHPD
+	AMOVHPS
+	AMOVLHPS
+	AMOVLPD
+	AMOVLPS
+	AMOVMSKPD
+	AMOVMSKPS
+	AMOVNTO
+	AMOVNTPD
+	AMOVNTPS
+	AMOVNTQ
+	AMOVO
+	AMOVQOZX
+	AMOVSD
+	AMOVSS
+	AMOVUPD
+	AMOVUPS
+	AMULPD
+	AMULPS
+	AMULSD
+	AMULSS
+	AMULXL
+	AMULXQ
+	AORPD
+	AORPS
+	APACKSSLW
+	APACKSSWB
+	APACKUSWB
+	APADDB
+	APADDL
+	APADDQ
+	APADDSB
+	APADDSW
+	APADDUSB
+	APADDUSW
+	APADDW
+	APAND
+	APANDN
+	APAVGB
+	APAVGW
+	APCMPEQB
+	APCMPEQL
+	APCMPEQW
+	APCMPGTB
+	APCMPGTL
+	APCMPGTW
+	APDEPL
+	APDEPQ
+	APEXTL
+	APEXTQ
+	APEXTRB
+	APEXTRD
+	APEXTRQ
+	APEXTRW
+	APHADDD
+	APHADDSW
+	APHADDW
+	APHMINPOSUW
+	APHSUBD
+	APHSUBSW
+	APHSUBW
+	APINSRB
+	APINSRD
+	APINSRQ
+	APINSRW
+	APMADDWL
+	APMAXSW
+	APMAXUB
+	APMINSW
+	APMINUB
+	APMOVMSKB
+	APMOVSXBD
+	APMOVSXBQ
+	APMOVSXBW
+	APMOVSXDQ
+	APMOVSXWD
+	APMOVSXWQ
+	APMOVZXBD
+	APMOVZXBQ
+	APMOVZXBW
+	APMOVZXDQ
+	APMOVZXWD
+	APMOVZXWQ
+	APMULDQ
+	APMULHUW
+	APMULHW
+	APMULLD
+	APMULLW
+	APMULULQ
+	APOR
+	APSADBW
+	APSHUFB
+	APSHUFHW
+	APSHUFL
+	APSHUFLW
+	APSHUFW
+	APSLLL
+	APSLLO
+	APSLLQ
+	APSLLW
+	APSRAL
+	APSRAW
+	APSRLL
+	APSRLO
+	APSRLQ
+	APSRLW
+	APSUBB
+	APSUBL
+	APSUBQ
+	APSUBSB
+	APSUBSW
+	APSUBUSB
+	APSUBUSW
+	APSUBW
+	APUNPCKHBW
+	APUNPCKHLQ
+	APUNPCKHQDQ
+	APUNPCKHWL
+	APUNPCKLBW
+	APUNPCKLLQ
+	APUNPCKLQDQ
+	APUNPCKLWL
+	APXOR
+	ARCPPS
+	ARCPSS
+	ARSQRTPS
+	ARSQRTSS
+	ASARXL
+	ASARXQ
+	ASHLXL
+	ASHLXQ
+	ASHRXL
+	ASHRXQ
+	ASHUFPD
+	ASHUFPS
+	ASQRTPD
+	ASQRTPS
+	ASQRTSD
+	ASQRTSS
+	ASTMXCSR
+	ASUBPD
+	ASUBPS
+	ASUBSD
+	ASUBSS
+	AUCOMISD
+	AUCOMISS
+	AUNPCKHPD
+	AUNPCKHPS
+	AUNPCKLPD
+	AUNPCKLPS
+	AXORPD
+	AXORPS
+	APCMPESTRI
+
+	ARETFW
+	ARETFL
+	ARETFQ
+	ASWAPGS
+
+	AMODE
+	ACRC32B
+	ACRC32Q
+	AIMUL3Q
+
+	APREFETCHT0
+	APREFETCHT1
+	APREFETCHT2
+	APREFETCHNTA
+
+	AMOVQL
+	ABSWAPL
+	ABSWAPQ
+
+	AAESENC
+	AAESENCLAST
+	AAESDEC
+	AAESDECLAST
+	AAESIMC
+	AAESKEYGENASSIST
+
+	AROUNDPS
+	AROUNDSS
+	AROUNDPD
+	AROUNDSD
+	AMOVDDUP
+	AMOVSHDUP
+	AMOVSLDUP
+
+	APSHUFD
+	APCLMULQDQ
+
+	AVZEROUPPER
+	AVMOVDQU
+	AVMOVNTDQ
+	AVMOVDQA
+	AVPCMPEQB
+	AVPXOR
+	AVPMOVMSKB
+	AVPAND
+	AVPTEST
+	AVPBROADCASTB
+	AVPSHUFB
+	AVPSHUFD
+	AVPERM2F128
+	AVPALIGNR
+	AVPADDQ
+	AVPADDD
+	AVPSRLDQ
+	AVPSLLDQ
+	AVPSRLQ
+	AVPSLLQ
+	AVPSRLD
+	AVPSLLD
+	AVPOR
+	AVPBLENDD
+	AVINSERTI128
+	AVPERM2I128
+	ARORXL
+	ARORXQ
+	AVBROADCASTSS
+	AVBROADCASTSD
+	AVMOVDDUP
+	AVMOVSHDUP
+	AVMOVSLDUP
+
+	// from 386
+	AJCXZW
+	AFCMOVCC
+	AFCMOVCS
+	AFCMOVEQ
+	AFCMOVHI
+	AFCMOVLS
+	AFCMOVNE
+	AFCMOVNU
+	AFCMOVUN
+	AFCOMI
+	AFCOMIP
+	AFUCOMI
+	AFUCOMIP
+
+	// TSX
+	AXACQUIRE
+	AXRELEASE
+	AXBEGIN
+	AXEND
+	AXABORT
+	AXTEST
+
+	ALAST
+)
+
+const (
+	REG_NONE = 0
+)
+
+const (
+	REG_AL = obj.RBaseAMD64 + iota
+	REG_CL
+	REG_DL
+	REG_BL
+	REG_SPB
+	REG_BPB
+	REG_SIB
+	REG_DIB
+	REG_R8B
+	REG_R9B
+	REG_R10B
+	REG_R11B
+	REG_R12B
+	REG_R13B
+	REG_R14B
+	REG_R15B
+
+	REG_AX
+	REG_CX
+	REG_DX
+	REG_BX
+	REG_SP
+	REG_BP
+	REG_SI
+	REG_DI
+	REG_R8
+	REG_R9
+	REG_R10
+	REG_R11
+	REG_R12
+	REG_R13
+	REG_R14
+	REG_R15
+
+	REG_AH
+	REG_CH
+	REG_DH
+	REG_BH
+
+	REG_F0
+	REG_F1
+	REG_F2
+	REG_F3
+	REG_F4
+	REG_F5
+	REG_F6
+	REG_F7
+
+	REG_M0
+	REG_M1
+	REG_M2
+	REG_M3
+	REG_M4
+	REG_M5
+	REG_M6
+	REG_M7
+
+	REG_X0
+	REG_X1
+	REG_X2
+	REG_X3
+	REG_X4
+	REG_X5
+	REG_X6
+	REG_X7
+	REG_X8
+	REG_X9
+	REG_X10
+	REG_X11
+	REG_X12
+	REG_X13
+	REG_X14
+	REG_X15
+
+	REG_Y0
+	REG_Y1
+	REG_Y2
+	REG_Y3
+	REG_Y4
+	REG_Y5
+	REG_Y6
+	REG_Y7
+	REG_Y8
+	REG_Y9
+	REG_Y10
+	REG_Y11
+	REG_Y12
+	REG_Y13
+	REG_Y14
+	REG_Y15
+
+	REG_CS
+	REG_SS
+	REG_DS
+	REG_ES
+	REG_FS
+	REG_GS
+
+	REG_GDTR /* global descriptor table register */
+	REG_IDTR /* interrupt descriptor table register */
+	REG_LDTR /* local descriptor table register */
+	REG_MSW  /* machine status word */
+	REG_TASK /* task register */
+
+	REG_CR0
+	REG_CR1
+	REG_CR2
+	REG_CR3
+	REG_CR4
+	REG_CR5
+	REG_CR6
+	REG_CR7
+	REG_CR8
+	REG_CR9
+	REG_CR10
+	REG_CR11
+	REG_CR12
+	REG_CR13
+	REG_CR14
+	REG_CR15
+
+	REG_DR0
+	REG_DR1
+	REG_DR2
+	REG_DR3
+	REG_DR4
+	REG_DR5
+	REG_DR6
+	REG_DR7
+
+	REG_TR0
+	REG_TR1
+	REG_TR2
+	REG_TR3
+	REG_TR4
+	REG_TR5
+	REG_TR6
+	REG_TR7
+
+	REG_TLS
+
+	MAXREG
+
+	REG_CR = REG_CR0
+	REG_DR = REG_DR0
+	REG_TR = REG_TR0
+
+	REGARG   = -1
+	REGRET   = REG_AX
+	FREGRET  = REG_X0
+	REGSP    = REG_SP
+	REGCTXT  = REG_DX
+	REGEXT   = REG_R15     /* compiler allocates external registers R15 down */
+	FREGMIN  = REG_X0 + 5  /* first register variable */
+	FREGEXT  = REG_X0 + 15 /* first external register */
+	T_TYPE   = 1 << 0
+	T_INDEX  = 1 << 1
+	T_OFFSET = 1 << 2
+	T_FCONST = 1 << 3
+	T_SYM    = 1 << 4
+	T_SCONST = 1 << 5
+	T_64     = 1 << 6
+	T_GOTYPE = 1 << 7
+)
diff --git a/vendor/github.com/google/gops/internal/obj/x86/anames.go b/vendor/github.com/google/gops/internal/obj/x86/anames.go
new file mode 100644
index 00000000..5f5e8b8b
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/x86/anames.go
@@ -0,0 +1,769 @@
+// Generated by stringer -i a.out.go -o anames.go -p x86
+// Do not edit.
+
+package x86
+
+import "github.com/google/gops/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "AAA",
+	"AAD",
+	"AAM",
+	"AAS",
+	"ADCB",
+	"ADCL",
+	"ADCW",
+	"ADDB",
+	"ADDL",
+	"ADDW",
+	"ADJSP",
+	"ANDB",
+	"ANDL",
+	"ANDW",
+	"ARPL",
+	"BOUNDL",
+	"BOUNDW",
+	"BSFL",
+	"BSFW",
+	"BSRL",
+	"BSRW",
+	"BTL",
+	"BTW",
+	"BTCL",
+	"BTCW",
+	"BTRL",
+	"BTRW",
+	"BTSL",
+	"BTSW",
+	"BYTE",
+	"CLC",
+	"CLD",
+	"CLI",
+	"CLTS",
+	"CMC",
+	"CMPB",
+	"CMPL",
+	"CMPW",
+	"CMPSB",
+	"CMPSL",
+	"CMPSW",
+	"DAA",
+	"DAS",
+	"DECB",
+	"DECL",
+	"DECQ",
+	"DECW",
+	"DIVB",
+	"DIVL",
+	"DIVW",
+	"ENTER",
+	"HADDPD",
+	"HADDPS",
+	"HLT",
+	"HSUBPD",
+	"HSUBPS",
+	"IDIVB",
+	"IDIVL",
+	"IDIVW",
+	"IMULB",
+	"IMULL",
+	"IMULW",
+	"INB",
+	"INL",
+	"INW",
+	"INCB",
+	"INCL",
+	"INCQ",
+	"INCW",
+	"INSB",
+	"INSL",
+	"INSW",
+	"INT",
+	"INTO",
+	"IRETL",
+	"IRETW",
+	"JCC",
+	"JCS",
+	"JCXZL",
+	"JEQ",
+	"JGE",
+	"JGT",
+	"JHI",
+	"JLE",
+	"JLS",
+	"JLT",
+	"JMI",
+	"JNE",
+	"JOC",
+	"JOS",
+	"JPC",
+	"JPL",
+	"JPS",
+	"LAHF",
+	"LARL",
+	"LARW",
+	"LEAL",
+	"LEAW",
+	"LEAVEL",
+	"LEAVEW",
+	"LOCK",
+	"LODSB",
+	"LODSL",
+	"LODSW",
+	"LONG",
+	"LOOP",
+	"LOOPEQ",
+	"LOOPNE",
+	"LSLL",
+	"LSLW",
+	"MOVB",
+	"MOVL",
+	"MOVW",
+	"MOVBLSX",
+	"MOVBLZX",
+	"MOVBQSX",
+	"MOVBQZX",
+	"MOVBWSX",
+	"MOVBWZX",
+	"MOVWLSX",
+	"MOVWLZX",
+	"MOVWQSX",
+	"MOVWQZX",
+	"MOVSB",
+	"MOVSL",
+	"MOVSW",
+	"MULB",
+	"MULL",
+	"MULW",
+	"NEGB",
+	"NEGL",
+	"NEGW",
+	"NOTB",
+	"NOTL",
+	"NOTW",
+	"ORB",
+	"ORL",
+	"ORW",
+	"OUTB",
+	"OUTL",
+	"OUTW",
+	"OUTSB",
+	"OUTSL",
+	"OUTSW",
+	"PAUSE",
+	"POPAL",
+	"POPAW",
+	"POPCNTW",
+	"POPCNTL",
+	"POPCNTQ",
+	"POPFL",
+	"POPFW",
+	"POPL",
+	"POPW",
+	"PUSHAL",
+	"PUSHAW",
+	"PUSHFL",
+	"PUSHFW",
+	"PUSHL",
+	"PUSHW",
+	"RCLB",
+	"RCLL",
+	"RCLW",
+	"RCRB",
+	"RCRL",
+	"RCRW",
+	"REP",
+	"REPN",
+	"ROLB",
+	"ROLL",
+	"ROLW",
+	"RORB",
+	"RORL",
+	"RORW",
+	"SAHF",
+	"SALB",
+	"SALL",
+	"SALW",
+	"SARB",
+	"SARL",
+	"SARW",
+	"SBBB",
+	"SBBL",
+	"SBBW",
+	"SCASB",
+	"SCASL",
+	"SCASW",
+	"SETCC",
+	"SETCS",
+	"SETEQ",
+	"SETGE",
+	"SETGT",
+	"SETHI",
+	"SETLE",
+	"SETLS",
+	"SETLT",
+	"SETMI",
+	"SETNE",
+	"SETOC",
+	"SETOS",
+	"SETPC",
+	"SETPL",
+	"SETPS",
+	"CDQ",
+	"CWD",
+	"SHLB",
+	"SHLL",
+	"SHLW",
+	"SHRB",
+	"SHRL",
+	"SHRW",
+	"STC",
+	"STD",
+	"STI",
+	"STOSB",
+	"STOSL",
+	"STOSW",
+	"SUBB",
+	"SUBL",
+	"SUBW",
+	"SYSCALL",
+	"TESTB",
+	"TESTL",
+	"TESTW",
+	"VERR",
+	"VERW",
+	"WAIT",
+	"WORD",
+	"XCHGB",
+	"XCHGL",
+	"XCHGW",
+	"XLAT",
+	"XORB",
+	"XORL",
+	"XORW",
+	"FMOVB",
+	"FMOVBP",
+	"FMOVD",
+	"FMOVDP",
+	"FMOVF",
+	"FMOVFP",
+	"FMOVL",
+	"FMOVLP",
+	"FMOVV",
+	"FMOVVP",
+	"FMOVW",
+	"FMOVWP",
+	"FMOVX",
+	"FMOVXP",
+	"FCOMD",
+	"FCOMDP",
+	"FCOMDPP",
+	"FCOMF",
+	"FCOMFP",
+	"FCOML",
+	"FCOMLP",
+	"FCOMW",
+	"FCOMWP",
+	"FUCOM",
+	"FUCOMP",
+	"FUCOMPP",
+	"FADDDP",
+	"FADDW",
+	"FADDL",
+	"FADDF",
+	"FADDD",
+	"FMULDP",
+	"FMULW",
+	"FMULL",
+	"FMULF",
+	"FMULD",
+	"FSUBDP",
+	"FSUBW",
+	"FSUBL",
+	"FSUBF",
+	"FSUBD",
+	"FSUBRDP",
+	"FSUBRW",
+	"FSUBRL",
+	"FSUBRF",
+	"FSUBRD",
+	"FDIVDP",
+	"FDIVW",
+	"FDIVL",
+	"FDIVF",
+	"FDIVD",
+	"FDIVRDP",
+	"FDIVRW",
+	"FDIVRL",
+	"FDIVRF",
+	"FDIVRD",
+	"FXCHD",
+	"FFREE",
+	"FLDCW",
+	"FLDENV",
+	"FRSTOR",
+	"FSAVE",
+	"FSTCW",
+	"FSTENV",
+	"FSTSW",
+	"F2XM1",
+	"FABS",
+	"FCHS",
+	"FCLEX",
+	"FCOS",
+	"FDECSTP",
+	"FINCSTP",
+	"FINIT",
+	"FLD1",
+	"FLDL2E",
+	"FLDL2T",
+	"FLDLG2",
+	"FLDLN2",
+	"FLDPI",
+	"FLDZ",
+	"FNOP",
+	"FPATAN",
+	"FPREM",
+	"FPREM1",
+	"FPTAN",
+	"FRNDINT",
+	"FSCALE",
+	"FSIN",
+	"FSINCOS",
+	"FSQRT",
+	"FTST",
+	"FXAM",
+	"FXTRACT",
+	"FYL2X",
+	"FYL2XP1",
+	"CMPXCHGB",
+	"CMPXCHGL",
+	"CMPXCHGW",
+	"CMPXCHG8B",
+	"CPUID",
+	"INVD",
+	"INVLPG",
+	"LFENCE",
+	"MFENCE",
+	"MOVNTIL",
+	"RDMSR",
+	"RDPMC",
+	"RDTSC",
+	"RSM",
+	"SFENCE",
+	"SYSRET",
+	"WBINVD",
+	"WRMSR",
+	"XADDB",
+	"XADDL",
+	"XADDW",
+	"CMOVLCC",
+	"CMOVLCS",
+	"CMOVLEQ",
+	"CMOVLGE",
+	"CMOVLGT",
+	"CMOVLHI",
+	"CMOVLLE",
+	"CMOVLLS",
+	"CMOVLLT",
+	"CMOVLMI",
+	"CMOVLNE",
+	"CMOVLOC",
+	"CMOVLOS",
+	"CMOVLPC",
+	"CMOVLPL",
+	"CMOVLPS",
+	"CMOVQCC",
+	"CMOVQCS",
+	"CMOVQEQ",
+	"CMOVQGE",
+	"CMOVQGT",
+	"CMOVQHI",
+	"CMOVQLE",
+	"CMOVQLS",
+	"CMOVQLT",
+	"CMOVQMI",
+	"CMOVQNE",
+	"CMOVQOC",
+	"CMOVQOS",
+	"CMOVQPC",
+	"CMOVQPL",
+	"CMOVQPS",
+	"CMOVWCC",
+	"CMOVWCS",
+	"CMOVWEQ",
+	"CMOVWGE",
+	"CMOVWGT",
+	"CMOVWHI",
+	"CMOVWLE",
+	"CMOVWLS",
+	"CMOVWLT",
+	"CMOVWMI",
+	"CMOVWNE",
+	"CMOVWOC",
+	"CMOVWOS",
+	"CMOVWPC",
+	"CMOVWPL",
+	"CMOVWPS",
+	"ADCQ",
+	"ADDQ",
+	"ANDQ",
+	"BSFQ",
+	"BSRQ",
+	"BTCQ",
+	"BTQ",
+	"BTRQ",
+	"BTSQ",
+	"CMPQ",
+	"CMPSQ",
+	"CMPXCHGQ",
+	"CQO",
+	"DIVQ",
+	"IDIVQ",
+	"IMULQ",
+	"IRETQ",
+	"JCXZQ",
+	"LEAQ",
+	"LEAVEQ",
+	"LODSQ",
+	"MOVQ",
+	"MOVLQSX",
+	"MOVLQZX",
+	"MOVNTIQ",
+	"MOVSQ",
+	"MULQ",
+	"NEGQ",
+	"NOTQ",
+	"ORQ",
+	"POPFQ",
+	"POPQ",
+	"PUSHFQ",
+	"PUSHQ",
+	"RCLQ",
+	"RCRQ",
+	"ROLQ",
+	"RORQ",
+	"QUAD",
+	"SALQ",
+	"SARQ",
+	"SBBQ",
+	"SCASQ",
+	"SHLQ",
+	"SHRQ",
+	"STOSQ",
+	"SUBQ",
+	"TESTQ",
+	"XADDQ",
+	"XCHGQ",
+	"XORQ",
+	"XGETBV",
+	"ADDPD",
+	"ADDPS",
+	"ADDSD",
+	"ADDSS",
+	"ANDNL",
+	"ANDNQ",
+	"ANDNPD",
+	"ANDNPS",
+	"ANDPD",
+	"ANDPS",
+	"BEXTRL",
+	"BEXTRQ",
+	"BLSIL",
+	"BLSIQ",
+	"BLSMSKL",
+	"BLSMSKQ",
+	"BLSRL",
+	"BLSRQ",
+	"BZHIL",
+	"BZHIQ",
+	"CMPPD",
+	"CMPPS",
+	"CMPSD",
+	"CMPSS",
+	"COMISD",
+	"COMISS",
+	"CVTPD2PL",
+	"CVTPD2PS",
+	"CVTPL2PD",
+	"CVTPL2PS",
+	"CVTPS2PD",
+	"CVTPS2PL",
+	"CVTSD2SL",
+	"CVTSD2SQ",
+	"CVTSD2SS",
+	"CVTSL2SD",
+	"CVTSL2SS",
+	"CVTSQ2SD",
+	"CVTSQ2SS",
+	"CVTSS2SD",
+	"CVTSS2SL",
+	"CVTSS2SQ",
+	"CVTTPD2PL",
+	"CVTTPS2PL",
+	"CVTTSD2SL",
+	"CVTTSD2SQ",
+	"CVTTSS2SL",
+	"CVTTSS2SQ",
+	"DIVPD",
+	"DIVPS",
+	"DIVSD",
+	"DIVSS",
+	"EMMS",
+	"FXRSTOR",
+	"FXRSTOR64",
+	"FXSAVE",
+	"FXSAVE64",
+	"LDDQU",
+	"LDMXCSR",
+	"MASKMOVOU",
+	"MASKMOVQ",
+	"MAXPD",
+	"MAXPS",
+	"MAXSD",
+	"MAXSS",
+	"MINPD",
+	"MINPS",
+	"MINSD",
+	"MINSS",
+	"MOVAPD",
+	"MOVAPS",
+	"MOVOU",
+	"MOVHLPS",
+	"MOVHPD",
+	"MOVHPS",
+	"MOVLHPS",
+	"MOVLPD",
+	"MOVLPS",
+	"MOVMSKPD",
+	"MOVMSKPS",
+	"MOVNTO",
+	"MOVNTPD",
+	"MOVNTPS",
+	"MOVNTQ",
+	"MOVO",
+	"MOVQOZX",
+	"MOVSD",
+	"MOVSS",
+	"MOVUPD",
+	"MOVUPS",
+	"MULPD",
+	"MULPS",
+	"MULSD",
+	"MULSS",
+	"MULXL",
+	"MULXQ",
+	"ORPD",
+	"ORPS",
+	"PACKSSLW",
+	"PACKSSWB",
+	"PACKUSWB",
+	"PADDB",
+	"PADDL",
+	"PADDQ",
+	"PADDSB",
+	"PADDSW",
+	"PADDUSB",
+	"PADDUSW",
+	"PADDW",
+	"PAND",
+	"PANDN",
+	"PAVGB",
+	"PAVGW",
+	"PCMPEQB",
+	"PCMPEQL",
+	"PCMPEQW",
+	"PCMPGTB",
+	"PCMPGTL",
+	"PCMPGTW",
+	"PDEPL",
+	"PDEPQ",
+	"PEXTL",
+	"PEXTQ",
+	"PEXTRB",
+	"PEXTRD",
+	"PEXTRQ",
+	"PEXTRW",
+	"PHADDD",
+	"PHADDSW",
+	"PHADDW",
+	"PHMINPOSUW",
+	"PHSUBD",
+	"PHSUBSW",
+	"PHSUBW",
+	"PINSRB",
+	"PINSRD",
+	"PINSRQ",
+	"PINSRW",
+	"PMADDWL",
+	"PMAXSW",
+	"PMAXUB",
+	"PMINSW",
+	"PMINUB",
+	"PMOVMSKB",
+	"PMOVSXBD",
+	"PMOVSXBQ",
+	"PMOVSXBW",
+	"PMOVSXDQ",
+	"PMOVSXWD",
+	"PMOVSXWQ",
+	"PMOVZXBD",
+	"PMOVZXBQ",
+	"PMOVZXBW",
+	"PMOVZXDQ",
+	"PMOVZXWD",
+	"PMOVZXWQ",
+	"PMULDQ",
+	"PMULHUW",
+	"PMULHW",
+	"PMULLD",
+	"PMULLW",
+	"PMULULQ",
+	"POR",
+	"PSADBW",
+	"PSHUFB",
+	"PSHUFHW",
+	"PSHUFL",
+	"PSHUFLW",
+	"PSHUFW",
+	"PSLLL",
+	"PSLLO",
+	"PSLLQ",
+	"PSLLW",
+	"PSRAL",
+	"PSRAW",
+	"PSRLL",
+	"PSRLO",
+	"PSRLQ",
+	"PSRLW",
+	"PSUBB",
+	"PSUBL",
+	"PSUBQ",
+	"PSUBSB",
+	"PSUBSW",
+	"PSUBUSB",
+	"PSUBUSW",
+	"PSUBW",
+	"PUNPCKHBW",
+	"PUNPCKHLQ",
+	"PUNPCKHQDQ",
+	"PUNPCKHWL",
+	"PUNPCKLBW",
+	"PUNPCKLLQ",
+	"PUNPCKLQDQ",
+	"PUNPCKLWL",
+	"PXOR",
+	"RCPPS",
+	"RCPSS",
+	"RSQRTPS",
+	"RSQRTSS",
+	"SARXL",
+	"SARXQ",
+	"SHLXL",
+	"SHLXQ",
+	"SHRXL",
+	"SHRXQ",
+	"SHUFPD",
+	"SHUFPS",
+	"SQRTPD",
+	"SQRTPS",
+	"SQRTSD",
+	"SQRTSS",
+	"STMXCSR",
+	"SUBPD",
+	"SUBPS",
+	"SUBSD",
+	"SUBSS",
+	"UCOMISD",
+	"UCOMISS",
+	"UNPCKHPD",
+	"UNPCKHPS",
+	"UNPCKLPD",
+	"UNPCKLPS",
+	"XORPD",
+	"XORPS",
+	"PCMPESTRI",
+	"RETFW",
+	"RETFL",
+	"RETFQ",
+	"SWAPGS",
+	"MODE",
+	"CRC32B",
+	"CRC32Q",
+	"IMUL3Q",
+	"PREFETCHT0",
+	"PREFETCHT1",
+	"PREFETCHT2",
+	"PREFETCHNTA",
+	"MOVQL",
+	"BSWAPL",
+	"BSWAPQ",
+	"AESENC",
+	"AESENCLAST",
+	"AESDEC",
+	"AESDECLAST",
+	"AESIMC",
+	"AESKEYGENASSIST",
+	"ROUNDPS",
+	"ROUNDSS",
+	"ROUNDPD",
+	"ROUNDSD",
+	"MOVDDUP",
+	"MOVSHDUP",
+	"MOVSLDUP",
+	"PSHUFD",
+	"PCLMULQDQ",
+	"VZEROUPPER",
+	"VMOVDQU",
+	"VMOVNTDQ",
+	"VMOVDQA",
+	"VPCMPEQB",
+	"VPXOR",
+	"VPMOVMSKB",
+	"VPAND",
+	"VPTEST",
+	"VPBROADCASTB",
+	"VPSHUFB",
+	"VPSHUFD",
+	"VPERM2F128",
+	"VPALIGNR",
+	"VPADDQ",
+	"VPADDD",
+	"VPSRLDQ",
+	"VPSLLDQ",
+	"VPSRLQ",
+	"VPSLLQ",
+	"VPSRLD",
+	"VPSLLD",
+	"VPOR",
+	"VPBLENDD",
+	"VINSERTI128",
+	"VPERM2I128",
+	"RORXL",
+	"RORXQ",
+	"VBROADCASTSS",
+	"VBROADCASTSD",
+	"VMOVDDUP",
+	"VMOVSHDUP",
+	"VMOVSLDUP",
+	"JCXZW",
+	"FCMOVCC",
+	"FCMOVCS",
+	"FCMOVEQ",
+	"FCMOVHI",
+	"FCMOVLS",
+	"FCMOVNE",
+	"FCMOVNU",
+	"FCMOVUN",
+	"FCOMI",
+	"FCOMIP",
+	"FUCOMI",
+	"FUCOMIP",
+	"XACQUIRE",
+	"XRELEASE",
+	"XBEGIN",
+	"XEND",
+	"XABORT",
+	"XTEST",
+	"LAST",
+}
diff --git a/vendor/github.com/google/gops/internal/obj/x86/asm6.go b/vendor/github.com/google/gops/internal/obj/x86/asm6.go
new file mode 100644
index 00000000..d5462b8a
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/x86/asm6.go
@@ -0,0 +1,4536 @@
+// Inferno utils/6l/span.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package x86
+
+import (
+	"encoding/binary"
+	"fmt"
+	"log"
+	"strings"
+
+	"github.com/google/gops/internal/obj"
+)
+
+// Instruction layout.
+
+const (
+	// Loop alignment constants:
+	// want to align loop entry to LoopAlign-byte boundary,
+	// and willing to insert at most MaxLoopPad bytes of NOP to do so.
+	// We define a loop entry as the target of a backward jump.
+	//
+	// gcc uses MaxLoopPad = 10 for its 'generic x86-64' config,
+	// and it aligns all jump targets, not just backward jump targets.
+	//
+	// As of 6/1/2012, the effect of setting MaxLoopPad = 10 here
+	// is very slight but negative, so the alignment is disabled by
+	// setting MaxLoopPad = 0. The code is here for reference and
+	// for future experiments.
+	//
+	LoopAlign  = 16
+	MaxLoopPad = 0
+	funcAlign  = 16
+)
+
+type Optab struct {
+	as     obj.As
+	ytab   []ytab
+	prefix uint8
+	op     [23]uint8
+}
+
+type ytab struct {
+	from    uint8
+	from3   uint8
+	to      uint8
+	zcase   uint8
+	zoffset uint8
+}
+
+type Movtab struct {
+	as   obj.As
+	ft   uint8
+	f3t  uint8
+	tt   uint8
+	code uint8
+	op   [4]uint8
+}
+
+const (
+	Yxxx = iota
+	Ynone
+	Yi0 // $0
+	Yi1 // $1
+	Yi8 // $x, x fits in int8
+	Yu8 // $x, x fits in uint8
+	Yu7 // $x, x in 0..127 (fits in both int8 and uint8)
+	Ys32
+	Yi32
+	Yi64
+	Yiauto
+	Yal
+	Ycl
+	Yax
+	Ycx
+	Yrb
+	Yrl
+	Yrl32 // Yrl on 32-bit system
+	Yrf
+	Yf0
+	Yrx
+	Ymb
+	Yml
+	Ym
+	Ybr
+	Ycs
+	Yss
+	Yds
+	Yes
+	Yfs
+	Ygs
+	Ygdtr
+	Yidtr
+	Yldtr
+	Ymsw
+	Ytask
+	Ycr0
+	Ycr1
+	Ycr2
+	Ycr3
+	Ycr4
+	Ycr5
+	Ycr6
+	Ycr7
+	Ycr8
+	Ydr0
+	Ydr1
+	Ydr2
+	Ydr3
+	Ydr4
+	Ydr5
+	Ydr6
+	Ydr7
+	Ytr0
+	Ytr1
+	Ytr2
+	Ytr3
+	Ytr4
+	Ytr5
+	Ytr6
+	Ytr7
+	Ymr
+	Ymm
+	Yxr
+	Yxm
+	Yyr
+	Yym
+	Ytls
+	Ytextsize
+	Yindir
+	Ymax
+)
+
+const (
+	Zxxx = iota
+	Zlit
+	Zlitm_r
+	Z_rp
+	Zbr
+	Zcall
+	Zcallcon
+	Zcallduff
+	Zcallind
+	Zcallindreg
+	Zib_
+	Zib_rp
+	Zibo_m
+	Zibo_m_xm
+	Zil_
+	Zil_rp
+	Ziq_rp
+	Zilo_m
+	Zjmp
+	Zjmpcon
+	Zloop
+	Zo_iw
+	Zm_o
+	Zm_r
+	Zm2_r
+	Zm_r_xm
+	Zm_r_i_xm
+	Zm_r_xm_nr
+	Zr_m_xm_nr
+	Zibm_r /* mmx1,mmx2/mem64,imm8 */
+	Zibr_m
+	Zmb_r
+	Zaut_r
+	Zo_m
+	Zo_m64
+	Zpseudo
+	Zr_m
+	Zr_m_xm
+	Zrp_
+	Z_ib
+	Z_il
+	Zm_ibo
+	Zm_ilo
+	Zib_rr
+	Zil_rr
+	Zclr
+	Zbyte
+	Zvex_rm_v_r
+	Zvex_r_v_rm
+	Zvex_v_rm_r
+	Zvex_i_rm_r
+	Zvex_i_r_v
+	Zvex_i_rm_v_r
+	Zmax
+)
+
+const (
+	Px   = 0
+	Px1  = 1    // symbolic; exact value doesn't matter
+	P32  = 0x32 /* 32-bit only */
+	Pe   = 0x66 /* operand escape */
+	Pm   = 0x0f /* 2byte opcode escape */
+	Pq   = 0xff /* both escapes: 66 0f */
+	Pb   = 0xfe /* byte operands */
+	Pf2  = 0xf2 /* xmm escape 1: f2 0f */
+	Pf3  = 0xf3 /* xmm escape 2: f3 0f */
+	Pef3 = 0xf5 /* xmm escape 2 with 16-bit prefix: 66 f3 0f */
+	Pq3  = 0x67 /* xmm escape 3: 66 48 0f */
+	Pq4  = 0x68 /* xmm escape 4: 66 0F 38 */
+	Pfw  = 0xf4 /* Pf3 with Rex.w: f3 48 0f */
+	Pw   = 0x48 /* Rex.w */
+	Pw8  = 0x90 // symbolic; exact value doesn't matter
+	Py   = 0x80 /* defaults to 64-bit mode */
+	Py1  = 0x81 // symbolic; exact value doesn't matter
+	Py3  = 0x83 // symbolic; exact value doesn't matter
+	Pvex = 0x84 // symbolic: exact value doesn't matter
+
+	Rxw = 1 << 3 /* =1, 64-bit operand size */
+	Rxr = 1 << 2 /* extend modrm reg */
+	Rxx = 1 << 1 /* extend sib index */
+	Rxb = 1 << 0 /* extend modrm r/m, sib base, or opcode reg */
+)
+
+const (
+	// Encoding for VEX prefix in tables.
+	// The P, L, and W fields are chosen to match
+	// their eventual locations in the VEX prefix bytes.
+
+	// P field - 2 bits
+	vex66 = 1 << 0
+	vexF3 = 2 << 0
+	vexF2 = 3 << 0
+	// L field - 1 bit
+	vexLZ  = 0 << 2
+	vexLIG = 0 << 2
+	vex128 = 0 << 2
+	vex256 = 1 << 2
+	// W field - 1 bit
+	vexWIG = 0 << 7
+	vexW0  = 0 << 7
+	vexW1  = 1 << 7
+	// M field - 5 bits, but mostly reserved; we can store up to 4
+	vex0F   = 1 << 3
+	vex0F38 = 2 << 3
+	vex0F3A = 3 << 3
+
+	// Combinations used in the manual.
+	VEX_128_0F_WIG      = vex128 | vex0F | vexWIG
+	VEX_128_66_0F_W0    = vex128 | vex66 | vex0F | vexW0
+	VEX_128_66_0F_W1    = vex128 | vex66 | vex0F | vexW1
+	VEX_128_66_0F_WIG   = vex128 | vex66 | vex0F | vexWIG
+	VEX_128_66_0F38_W0  = vex128 | vex66 | vex0F38 | vexW0
+	VEX_128_66_0F38_W1  = vex128 | vex66 | vex0F38 | vexW1
+	VEX_128_66_0F38_WIG = vex128 | vex66 | vex0F38 | vexWIG
+	VEX_128_66_0F3A_W0  = vex128 | vex66 | vex0F3A | vexW0
+	VEX_128_66_0F3A_W1  = vex128 | vex66 | vex0F3A | vexW1
+	VEX_128_66_0F3A_WIG = vex128 | vex66 | vex0F3A | vexWIG
+	VEX_128_F2_0F_WIG   = vex128 | vexF2 | vex0F | vexWIG
+	VEX_128_F3_0F_WIG   = vex128 | vexF3 | vex0F | vexWIG
+	VEX_256_66_0F_WIG   = vex256 | vex66 | vex0F | vexWIG
+	VEX_256_66_0F38_W0  = vex256 | vex66 | vex0F38 | vexW0
+	VEX_256_66_0F38_W1  = vex256 | vex66 | vex0F38 | vexW1
+	VEX_256_66_0F38_WIG = vex256 | vex66 | vex0F38 | vexWIG
+	VEX_256_66_0F3A_W0  = vex256 | vex66 | vex0F3A | vexW0
+	VEX_256_66_0F3A_W1  = vex256 | vex66 | vex0F3A | vexW1
+	VEX_256_66_0F3A_WIG = vex256 | vex66 | vex0F3A | vexWIG
+	VEX_256_F2_0F_WIG   = vex256 | vexF2 | vex0F | vexWIG
+	VEX_256_F3_0F_WIG   = vex256 | vexF3 | vex0F | vexWIG
+	VEX_LIG_0F_WIG      = vexLIG | vex0F | vexWIG
+	VEX_LIG_66_0F_WIG   = vexLIG | vex66 | vex0F | vexWIG
+	VEX_LIG_66_0F38_W0  = vexLIG | vex66 | vex0F38 | vexW0
+	VEX_LIG_66_0F38_W1  = vexLIG | vex66 | vex0F38 | vexW1
+	VEX_LIG_66_0F3A_WIG = vexLIG | vex66 | vex0F3A | vexWIG
+	VEX_LIG_F2_0F_W0    = vexLIG | vexF2 | vex0F | vexW0
+	VEX_LIG_F2_0F_W1    = vexLIG | vexF2 | vex0F | vexW1
+	VEX_LIG_F2_0F_WIG   = vexLIG | vexF2 | vex0F | vexWIG
+	VEX_LIG_F3_0F_W0    = vexLIG | vexF3 | vex0F | vexW0
+	VEX_LIG_F3_0F_W1    = vexLIG | vexF3 | vex0F | vexW1
+	VEX_LIG_F3_0F_WIG   = vexLIG | vexF3 | vex0F | vexWIG
+	VEX_LZ_0F_WIG       = vexLZ | vex0F | vexWIG
+	VEX_LZ_0F38_W0      = vexLZ | vex0F38 | vexW0
+	VEX_LZ_0F38_W1      = vexLZ | vex0F38 | vexW1
+	VEX_LZ_66_0F38_W0   = vexLZ | vex66 | vex0F38 | vexW0
+	VEX_LZ_66_0F38_W1   = vexLZ | vex66 | vex0F38 | vexW1
+	VEX_LZ_F2_0F38_W0   = vexLZ | vexF2 | vex0F38 | vexW0
+	VEX_LZ_F2_0F38_W1   = vexLZ | vexF2 | vex0F38 | vexW1
+	VEX_LZ_F2_0F3A_W0   = vexLZ | vexF2 | vex0F3A | vexW0
+	VEX_LZ_F2_0F3A_W1   = vexLZ | vexF2 | vex0F3A | vexW1
+	VEX_LZ_F3_0F38_W0   = vexLZ | vexF3 | vex0F38 | vexW0
+	VEX_LZ_F3_0F38_W1   = vexLZ | vexF3 | vex0F38 | vexW1
+)
+
+var ycover [Ymax * Ymax]uint8
+
+var reg [MAXREG]int
+
+var regrex [MAXREG + 1]int
+
+var ynone = []ytab{
+	{Ynone, Ynone, Ynone, Zlit, 1},
+}
+
+var ytext = []ytab{
+	{Ymb, Ynone, Ytextsize, Zpseudo, 0},
+	{Ymb, Yi32, Ytextsize, Zpseudo, 1},
+}
+
+var ynop = []ytab{
+	{Ynone, Ynone, Ynone, Zpseudo, 0},
+	{Ynone, Ynone, Yiauto, Zpseudo, 0},
+	{Ynone, Ynone, Yml, Zpseudo, 0},
+	{Ynone, Ynone, Yrf, Zpseudo, 0},
+	{Ynone, Ynone, Yxr, Zpseudo, 0},
+	{Yiauto, Ynone, Ynone, Zpseudo, 0},
+	{Yml, Ynone, Ynone, Zpseudo, 0},
+	{Yrf, Ynone, Ynone, Zpseudo, 0},
+	{Yxr, Ynone, Ynone, Zpseudo, 1},
+}
+
+var yfuncdata = []ytab{
+	{Yi32, Ynone, Ym, Zpseudo, 0},
+}
+
+var ypcdata = []ytab{
+	{Yi32, Ynone, Yi32, Zpseudo, 0},
+}
+
+var yxorb = []ytab{
+	{Yi32, Ynone, Yal, Zib_, 1},
+	{Yi32, Ynone, Ymb, Zibo_m, 2},
+	{Yrb, Ynone, Ymb, Zr_m, 1},
+	{Ymb, Ynone, Yrb, Zm_r, 1},
+}
+
+var yaddl = []ytab{
+	{Yi8, Ynone, Yml, Zibo_m, 2},
+	{Yi32, Ynone, Yax, Zil_, 1},
+	{Yi32, Ynone, Yml, Zilo_m, 2},
+	{Yrl, Ynone, Yml, Zr_m, 1},
+	{Yml, Ynone, Yrl, Zm_r, 1},
+}
+
+var yincl = []ytab{
+	{Ynone, Ynone, Yrl, Z_rp, 1},
+	{Ynone, Ynone, Yml, Zo_m, 2},
+}
+
+var yincq = []ytab{
+	{Ynone, Ynone, Yml, Zo_m, 2},
+}
+
+var ycmpb = []ytab{
+	{Yal, Ynone, Yi32, Z_ib, 1},
+	{Ymb, Ynone, Yi32, Zm_ibo, 2},
+	{Ymb, Ynone, Yrb, Zm_r, 1},
+	{Yrb, Ynone, Ymb, Zr_m, 1},
+}
+
+var ycmpl = []ytab{
+	{Yml, Ynone, Yi8, Zm_ibo, 2},
+	{Yax, Ynone, Yi32, Z_il, 1},
+	{Yml, Ynone, Yi32, Zm_ilo, 2},
+	{Yml, Ynone, Yrl, Zm_r, 1},
+	{Yrl, Ynone, Yml, Zr_m, 1},
+}
+
+var yshb = []ytab{
+	{Yi1, Ynone, Ymb, Zo_m, 2},
+	{Yi32, Ynone, Ymb, Zibo_m, 2},
+	{Ycx, Ynone, Ymb, Zo_m, 2},
+}
+
+var yshl = []ytab{
+	{Yi1, Ynone, Yml, Zo_m, 2},
+	{Yi32, Ynone, Yml, Zibo_m, 2},
+	{Ycl, Ynone, Yml, Zo_m, 2},
+	{Ycx, Ynone, Yml, Zo_m, 2},
+}
+
+var ytestl = []ytab{
+	{Yi32, Ynone, Yax, Zil_, 1},
+	{Yi32, Ynone, Yml, Zilo_m, 2},
+	{Yrl, Ynone, Yml, Zr_m, 1},
+	{Yml, Ynone, Yrl, Zm_r, 1},
+}
+
+var ymovb = []ytab{
+	{Yrb, Ynone, Ymb, Zr_m, 1},
+	{Ymb, Ynone, Yrb, Zm_r, 1},
+	{Yi32, Ynone, Yrb, Zib_rp, 1},
+	{Yi32, Ynone, Ymb, Zibo_m, 2},
+}
+
+var ybtl = []ytab{
+	{Yi8, Ynone, Yml, Zibo_m, 2},
+	{Yrl, Ynone, Yml, Zr_m, 1},
+}
+
+var ymovw = []ytab{
+	{Yrl, Ynone, Yml, Zr_m, 1},
+	{Yml, Ynone, Yrl, Zm_r, 1},
+	{Yi0, Ynone, Yrl, Zclr, 1},
+	{Yi32, Ynone, Yrl, Zil_rp, 1},
+	{Yi32, Ynone, Yml, Zilo_m, 2},
+	{Yiauto, Ynone, Yrl, Zaut_r, 2},
+}
+
+var ymovl = []ytab{
+	{Yrl, Ynone, Yml, Zr_m, 1},
+	{Yml, Ynone, Yrl, Zm_r, 1},
+	{Yi0, Ynone, Yrl, Zclr, 1},
+	{Yi32, Ynone, Yrl, Zil_rp, 1},
+	{Yi32, Ynone, Yml, Zilo_m, 2},
+	{Yml, Ynone, Ymr, Zm_r_xm, 1}, // MMX MOVD
+	{Ymr, Ynone, Yml, Zr_m_xm, 1}, // MMX MOVD
+	{Yml, Ynone, Yxr, Zm_r_xm, 2}, // XMM MOVD (32 bit)
+	{Yxr, Ynone, Yml, Zr_m_xm, 2}, // XMM MOVD (32 bit)
+	{Yiauto, Ynone, Yrl, Zaut_r, 2},
+}
+
+var yret = []ytab{
+	{Ynone, Ynone, Ynone, Zo_iw, 1},
+	{Yi32, Ynone, Ynone, Zo_iw, 1},
+}
+
+var ymovq = []ytab{
+	// valid in 32-bit mode
+	{Ym, Ynone, Ymr, Zm_r_xm_nr, 1},  // 0x6f MMX MOVQ (shorter encoding)
+	{Ymr, Ynone, Ym, Zr_m_xm_nr, 1},  // 0x7f MMX MOVQ
+	{Yxr, Ynone, Ymr, Zm_r_xm_nr, 2}, // Pf2, 0xd6 MOVDQ2Q
+	{Yxm, Ynone, Yxr, Zm_r_xm_nr, 2}, // Pf3, 0x7e MOVQ xmm1/m64 -> xmm2
+	{Yxr, Ynone, Yxm, Zr_m_xm_nr, 2}, // Pe, 0xd6 MOVQ xmm1 -> xmm2/m64
+
+	// valid only in 64-bit mode, usually with 64-bit prefix
+	{Yrl, Ynone, Yml, Zr_m, 1},      // 0x89
+	{Yml, Ynone, Yrl, Zm_r, 1},      // 0x8b
+	{Yi0, Ynone, Yrl, Zclr, 1},      // 0x31
+	{Ys32, Ynone, Yrl, Zilo_m, 2},   // 32 bit signed 0xc7,(0)
+	{Yi64, Ynone, Yrl, Ziq_rp, 1},   // 0xb8 -- 32/64 bit immediate
+	{Yi32, Ynone, Yml, Zilo_m, 2},   // 0xc7,(0)
+	{Ymm, Ynone, Ymr, Zm_r_xm, 1},   // 0x6e MMX MOVD
+	{Ymr, Ynone, Ymm, Zr_m_xm, 1},   // 0x7e MMX MOVD
+	{Yml, Ynone, Yxr, Zm_r_xm, 2},   // Pe, 0x6e MOVD xmm load
+	{Yxr, Ynone, Yml, Zr_m_xm, 2},   // Pe, 0x7e MOVD xmm store
+	{Yiauto, Ynone, Yrl, Zaut_r, 1}, // 0 built-in LEAQ
+}
+
+var ym_rl = []ytab{
+	{Ym, Ynone, Yrl, Zm_r, 1},
+}
+
+var yrl_m = []ytab{
+	{Yrl, Ynone, Ym, Zr_m, 1},
+}
+
+var ymb_rl = []ytab{
+	{Ymb, Ynone, Yrl, Zmb_r, 1},
+}
+
+var yml_rl = []ytab{
+	{Yml, Ynone, Yrl, Zm_r, 1},
+}
+
+var yrl_ml = []ytab{
+	{Yrl, Ynone, Yml, Zr_m, 1},
+}
+
+var yml_mb = []ytab{
+	{Yrb, Ynone, Ymb, Zr_m, 1},
+	{Ymb, Ynone, Yrb, Zm_r, 1},
+}
+
+var yrb_mb = []ytab{
+	{Yrb, Ynone, Ymb, Zr_m, 1},
+}
+
+var yxchg = []ytab{
+	{Yax, Ynone, Yrl, Z_rp, 1},
+	{Yrl, Ynone, Yax, Zrp_, 1},
+	{Yrl, Ynone, Yml, Zr_m, 1},
+	{Yml, Ynone, Yrl, Zm_r, 1},
+}
+
+var ydivl = []ytab{
+	{Yml, Ynone, Ynone, Zm_o, 2},
+}
+
+var ydivb = []ytab{
+	{Ymb, Ynone, Ynone, Zm_o, 2},
+}
+
+var yimul = []ytab{
+	{Yml, Ynone, Ynone, Zm_o, 2},
+	{Yi8, Ynone, Yrl, Zib_rr, 1},
+	{Yi32, Ynone, Yrl, Zil_rr, 1},
+	{Yml, Ynone, Yrl, Zm_r, 2},
+}
+
+var yimul3 = []ytab{
+	{Yi8, Yml, Yrl, Zibm_r, 2},
+}
+
+var ybyte = []ytab{
+	{Yi64, Ynone, Ynone, Zbyte, 1},
+}
+
+var yin = []ytab{
+	{Yi32, Ynone, Ynone, Zib_, 1},
+	{Ynone, Ynone, Ynone, Zlit, 1},
+}
+
+var yint = []ytab{
+	{Yi32, Ynone, Ynone, Zib_, 1},
+}
+
+var ypushl = []ytab{
+	{Yrl, Ynone, Ynone, Zrp_, 1},
+	{Ym, Ynone, Ynone, Zm_o, 2},
+	{Yi8, Ynone, Ynone, Zib_, 1},
+	{Yi32, Ynone, Ynone, Zil_, 1},
+}
+
+var ypopl = []ytab{
+	{Ynone, Ynone, Yrl, Z_rp, 1},
+	{Ynone, Ynone, Ym, Zo_m, 2},
+}
+
+var ybswap = []ytab{
+	{Ynone, Ynone, Yrl, Z_rp, 2},
+}
+
+var yscond = []ytab{
+	{Ynone, Ynone, Ymb, Zo_m, 2},
+}
+
+var yjcond = []ytab{
+	{Ynone, Ynone, Ybr, Zbr, 0},
+	{Yi0, Ynone, Ybr, Zbr, 0},
+	{Yi1, Ynone, Ybr, Zbr, 1},
+}
+
+var yloop = []ytab{
+	{Ynone, Ynone, Ybr, Zloop, 1},
+}
+
+var ycall = []ytab{
+	{Ynone, Ynone, Yml, Zcallindreg, 0},
+	{Yrx, Ynone, Yrx, Zcallindreg, 2},
+	{Ynone, Ynone, Yindir, Zcallind, 2},
+	{Ynone, Ynone, Ybr, Zcall, 0},
+	{Ynone, Ynone, Yi32, Zcallcon, 1},
+}
+
+var yduff = []ytab{
+	{Ynone, Ynone, Yi32, Zcallduff, 1},
+}
+
+var yjmp = []ytab{
+	{Ynone, Ynone, Yml, Zo_m64, 2},
+	{Ynone, Ynone, Ybr, Zjmp, 0},
+	{Ynone, Ynone, Yi32, Zjmpcon, 1},
+}
+
+var yfmvd = []ytab{
+	{Ym, Ynone, Yf0, Zm_o, 2},
+	{Yf0, Ynone, Ym, Zo_m, 2},
+	{Yrf, Ynone, Yf0, Zm_o, 2},
+	{Yf0, Ynone, Yrf, Zo_m, 2},
+}
+
+var yfmvdp = []ytab{
+	{Yf0, Ynone, Ym, Zo_m, 2},
+	{Yf0, Ynone, Yrf, Zo_m, 2},
+}
+
+var yfmvf = []ytab{
+	{Ym, Ynone, Yf0, Zm_o, 2},
+	{Yf0, Ynone, Ym, Zo_m, 2},
+}
+
+var yfmvx = []ytab{
+	{Ym, Ynone, Yf0, Zm_o, 2},
+}
+
+var yfmvp = []ytab{
+	{Yf0, Ynone, Ym, Zo_m, 2},
+}
+
+var yfcmv = []ytab{
+	{Yrf, Ynone, Yf0, Zm_o, 2},
+}
+
+var yfadd = []ytab{
+	{Ym, Ynone, Yf0, Zm_o, 2},
+	{Yrf, Ynone, Yf0, Zm_o, 2},
+	{Yf0, Ynone, Yrf, Zo_m, 2},
+}
+
+var yfxch = []ytab{
+	{Yf0, Ynone, Yrf, Zo_m, 2},
+	{Yrf, Ynone, Yf0, Zm_o, 2},
+}
+
+var ycompp = []ytab{
+	{Yf0, Ynone, Yrf, Zo_m, 2}, /* botch is really f0,f1 */
+}
+
+var ystsw = []ytab{
+	{Ynone, Ynone, Ym, Zo_m, 2},
+	{Ynone, Ynone, Yax, Zlit, 1},
+}
+
+var ysvrs = []ytab{
+	{Ynone, Ynone, Ym, Zo_m, 2},
+	{Ym, Ynone, Ynone, Zm_o, 2},
+}
+
+var ymm = []ytab{
+	{Ymm, Ynone, Ymr, Zm_r_xm, 1},
+	{Yxm, Ynone, Yxr, Zm_r_xm, 2},
+}
+
+var yxm = []ytab{
+	{Yxm, Ynone, Yxr, Zm_r_xm, 1},
+}
+
+var yxm_q4 = []ytab{
+	{Yxm, Ynone, Yxr, Zm_r, 1},
+}
+
+var yxcvm1 = []ytab{
+	{Yxm, Ynone, Yxr, Zm_r_xm, 2},
+	{Yxm, Ynone, Ymr, Zm_r_xm, 2},
+}
+
+var yxcvm2 = []ytab{
+	{Yxm, Ynone, Yxr, Zm_r_xm, 2},
+	{Ymm, Ynone, Yxr, Zm_r_xm, 2},
+}
+
+var yxr = []ytab{
+	{Yxr, Ynone, Yxr, Zm_r_xm, 1},
+}
+
+var yxr_ml = []ytab{
+	{Yxr, Ynone, Yml, Zr_m_xm, 1},
+}
+
+var ymr = []ytab{
+	{Ymr, Ynone, Ymr, Zm_r, 1},
+}
+
+var ymr_ml = []ytab{
+	{Ymr, Ynone, Yml, Zr_m_xm, 1},
+}
+
+var yxcmpi = []ytab{
+	{Yxm, Yxr, Yi8, Zm_r_i_xm, 2},
+}
+
+var yxmov = []ytab{
+	{Yxm, Ynone, Yxr, Zm_r_xm, 1},
+	{Yxr, Ynone, Yxm, Zr_m_xm, 1},
+}
+
+var yxcvfl = []ytab{
+	{Yxm, Ynone, Yrl, Zm_r_xm, 1},
+}
+
+var yxcvlf = []ytab{
+	{Yml, Ynone, Yxr, Zm_r_xm, 1},
+}
+
+var yxcvfq = []ytab{
+	{Yxm, Ynone, Yrl, Zm_r_xm, 2},
+}
+
+var yxcvqf = []ytab{
+	{Yml, Ynone, Yxr, Zm_r_xm, 2},
+}
+
+var yps = []ytab{
+	{Ymm, Ynone, Ymr, Zm_r_xm, 1},
+	{Yi8, Ynone, Ymr, Zibo_m_xm, 2},
+	{Yxm, Ynone, Yxr, Zm_r_xm, 2},
+	{Yi8, Ynone, Yxr, Zibo_m_xm, 3},
+}
+
+var yxrrl = []ytab{
+	{Yxr, Ynone, Yrl, Zm_r, 1},
+}
+
+var ymrxr = []ytab{
+	{Ymr, Ynone, Yxr, Zm_r, 1},
+	{Yxm, Ynone, Yxr, Zm_r_xm, 1},
+}
+
+var ymshuf = []ytab{
+	{Yi8, Ymm, Ymr, Zibm_r, 2},
+}
+
+var ymshufb = []ytab{
+	{Yxm, Ynone, Yxr, Zm2_r, 2},
+}
+
+var yxshuf = []ytab{
+	{Yu8, Yxm, Yxr, Zibm_r, 2},
+}
+
+var yextrw = []ytab{
+	{Yu8, Yxr, Yrl, Zibm_r, 2},
+}
+
+var yextr = []ytab{
+	{Yu8, Yxr, Ymm, Zibr_m, 3},
+}
+
+var yinsrw = []ytab{
+	{Yu8, Yml, Yxr, Zibm_r, 2},
+}
+
+var yinsr = []ytab{
+	{Yu8, Ymm, Yxr, Zibm_r, 3},
+}
+
+var ypsdq = []ytab{
+	{Yi8, Ynone, Yxr, Zibo_m, 2},
+}
+
+var ymskb = []ytab{
+	{Yxr, Ynone, Yrl, Zm_r_xm, 2},
+	{Ymr, Ynone, Yrl, Zm_r_xm, 1},
+}
+
+var ycrc32l = []ytab{
+	{Yml, Ynone, Yrl, Zlitm_r, 0},
+}
+
+var yprefetch = []ytab{
+	{Ym, Ynone, Ynone, Zm_o, 2},
+}
+
+var yaes = []ytab{
+	{Yxm, Ynone, Yxr, Zlitm_r, 2},
+}
+
+var yxbegin = []ytab{
+	{Ynone, Ynone, Ybr, Zjmp, 1},
+}
+
+var yxabort = []ytab{
+	{Yu8, Ynone, Ynone, Zib_, 1},
+}
+
+var ylddqu = []ytab{
+	{Ym, Ynone, Yxr, Zm_r, 1},
+}
+
+// VEX instructions that come in two forms:
+//	VTHING xmm2/m128, xmmV, xmm1
+//	VTHING ymm2/m256, ymmV, ymm1
+// The opcode array in the corresponding Optab entry
+// should contain the (VEX prefixes, opcode byte) pair
+// for each of the two forms.
+// For example, the entries for VPXOR are:
+//
+//	VPXOR xmm2/m128, xmmV, xmm1
+//	VEX.NDS.128.66.0F.WIG EF /r
+//
+//	VPXOR ymm2/m256, ymmV, ymm1
+//	VEX.NDS.256.66.0F.WIG EF /r
+//
+// The NDS/NDD/DDS part can be dropped, producing this
+// Optab entry:
+//
+//	{AVPXOR, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xEF, VEX_256_66_0F_WIG, 0xEF}}
+//
+var yvex_xy3 = []ytab{
+	{Yxm, Yxr, Yxr, Zvex_rm_v_r, 2},
+	{Yym, Yyr, Yyr, Zvex_rm_v_r, 2},
+}
+
+var yvex_ri3 = []ytab{
+	{Yi8, Ymb, Yrl, Zvex_i_rm_r, 2},
+}
+
+var yvex_xyi3 = []ytab{
+	{Yu8, Yxm, Yxr, Zvex_i_rm_r, 2},
+	{Yu8, Yym, Yyr, Zvex_i_rm_r, 2},
+	{Yi8, Yxm, Yxr, Zvex_i_rm_r, 2},
+	{Yi8, Yym, Yyr, Zvex_i_rm_r, 2},
+}
+
+var yvex_yyi4 = []ytab{ //TODO don't hide 4 op, some version have xmm version
+	{Yym, Yyr, Yyr, Zvex_i_rm_v_r, 2},
+}
+
+var yvex_xyi4 = []ytab{
+	{Yxm, Yyr, Yyr, Zvex_i_rm_v_r, 2},
+}
+
+var yvex_shift = []ytab{
+	{Yi8, Yxr, Yxr, Zvex_i_r_v, 3},
+	{Yi8, Yyr, Yyr, Zvex_i_r_v, 3},
+	{Yxm, Yxr, Yxr, Zvex_rm_v_r, 2},
+	{Yxm, Yyr, Yyr, Zvex_rm_v_r, 2},
+}
+
+var yvex_shift_dq = []ytab{
+	{Yi8, Yxr, Yxr, Zvex_i_r_v, 3},
+	{Yi8, Yyr, Yyr, Zvex_i_r_v, 3},
+}
+
+var yvex_r3 = []ytab{
+	{Yml, Yrl, Yrl, Zvex_rm_v_r, 2},
+}
+
+var yvex_vmr3 = []ytab{
+	{Yrl, Yml, Yrl, Zvex_v_rm_r, 2},
+}
+
+var yvex_xy2 = []ytab{
+	{Yxm, Ynone, Yxr, Zvex_rm_v_r, 2},
+	{Yym, Ynone, Yyr, Zvex_rm_v_r, 2},
+}
+
+var yvex_xyr2 = []ytab{
+	{Yxr, Ynone, Yrl, Zvex_rm_v_r, 2},
+	{Yyr, Ynone, Yrl, Zvex_rm_v_r, 2},
+}
+
+var yvex_vmovdqa = []ytab{
+	{Yxm, Ynone, Yxr, Zvex_rm_v_r, 2},
+	{Yxr, Ynone, Yxm, Zvex_r_v_rm, 2},
+	{Yym, Ynone, Yyr, Zvex_rm_v_r, 2},
+	{Yyr, Ynone, Yym, Zvex_r_v_rm, 2},
+}
+
+var yvex_vmovntdq = []ytab{
+	{Yxr, Ynone, Ym, Zvex_r_v_rm, 2},
+	{Yyr, Ynone, Ym, Zvex_r_v_rm, 2},
+}
+
+var yvex_vpbroadcast = []ytab{
+	{Yxm, Ynone, Yxr, Zvex_rm_v_r, 2},
+	{Yxm, Ynone, Yyr, Zvex_rm_v_r, 2},
+}
+
+var yvex_vpbroadcast_sd = []ytab{
+	{Yxm, Ynone, Yyr, Zvex_rm_v_r, 2},
+}
+
+var ymmxmm0f38 = []ytab{
+	{Ymm, Ynone, Ymr, Zlitm_r, 3},
+	{Yxm, Ynone, Yxr, Zlitm_r, 5},
+}
+
+/*
+ * You are doasm, holding in your hand a Prog* with p->as set to, say, ACRC32,
+ * and p->from and p->to as operands (Addr*).  The linker scans optab to find
+ * the entry with the given p->as and then looks through the ytable for that
+ * instruction (the second field in the optab struct) for a line whose first
+ * two values match the Ytypes of the p->from and p->to operands.  The function
+ * oclass in span.c computes the specific Ytype of an operand and then the set
+ * of more general Ytypes that it satisfies is implied by the ycover table, set
+ * up in instinit.  For example, oclass distinguishes the constants 0 and 1
+ * from the more general 8-bit constants, but instinit says
+ *
+ *        ycover[Yi0*Ymax + Ys32] = 1;
+ *        ycover[Yi1*Ymax + Ys32] = 1;
+ *        ycover[Yi8*Ymax + Ys32] = 1;
+ *
+ * which means that Yi0, Yi1, and Yi8 all count as Ys32 (signed 32)
+ * if that's what an instruction can handle.
+ *
+ * In parallel with the scan through the ytable for the appropriate line, there
+ * is a z pointer that starts out pointing at the strange magic byte list in
+ * the Optab struct.  With each step past a non-matching ytable line, z
+ * advances by the 4th entry in the line.  When a matching line is found, that
+ * z pointer has the extra data to use in laying down the instruction bytes.
+ * The actual bytes laid down are a function of the 3rd entry in the line (that
+ * is, the Ztype) and the z bytes.
+ *
+ * For example, let's look at AADDL.  The optab line says:
+ *        { AADDL,        yaddl,  Px, 0x83,(00),0x05,0x81,(00),0x01,0x03 },
+ *
+ * and yaddl says
+ *        uchar   yaddl[] =
+ *        {
+ *                Yi8,    Yml,    Zibo_m, 2,
+ *                Yi32,   Yax,    Zil_,   1,
+ *                Yi32,   Yml,    Zilo_m, 2,
+ *                Yrl,    Yml,    Zr_m,   1,
+ *                Yml,    Yrl,    Zm_r,   1,
+ *                0
+ *        };
+ *
+ * so there are 5 possible types of ADDL instruction that can be laid down, and
+ * possible states used to lay them down (Ztype and z pointer, assuming z
+ * points at {0x83,(00),0x05,0x81,(00),0x01,0x03}) are:
+ *
+ *        Yi8, Yml -> Zibo_m, z (0x83, 00)
+ *        Yi32, Yax -> Zil_, z+2 (0x05)
+ *        Yi32, Yml -> Zilo_m, z+2+1 (0x81, 0x00)
+ *        Yrl, Yml -> Zr_m, z+2+1+2 (0x01)
+ *        Yml, Yrl -> Zm_r, z+2+1+2+1 (0x03)
+ *
+ * The Pconstant in the optab line controls the prefix bytes to emit.  That's
+ * relatively straightforward as this program goes.
+ *
+ * The switch on t[2] in doasm implements the various Z cases.  Zibo_m, for
+ * example, is an opcode byte (z[0]) then an asmando (which is some kind of
+ * encoded addressing mode for the Yml arg), and then a single immediate byte.
+ * Zilo_m is the same but a long (32-bit) immediate.
+ */
+var optab =
+/*	as, ytab, andproto, opcode */
+[]Optab{
+	{obj.AXXX, nil, 0, [23]uint8{}},
+	{AAAA, ynone, P32, [23]uint8{0x37}},
+	{AAAD, ynone, P32, [23]uint8{0xd5, 0x0a}},
+	{AAAM, ynone, P32, [23]uint8{0xd4, 0x0a}},
+	{AAAS, ynone, P32, [23]uint8{0x3f}},
+	{AADCB, yxorb, Pb, [23]uint8{0x14, 0x80, 02, 0x10, 0x10}},
+	{AADCL, yaddl, Px, [23]uint8{0x83, 02, 0x15, 0x81, 02, 0x11, 0x13}},
+	{AADCQ, yaddl, Pw, [23]uint8{0x83, 02, 0x15, 0x81, 02, 0x11, 0x13}},
+	{AADCW, yaddl, Pe, [23]uint8{0x83, 02, 0x15, 0x81, 02, 0x11, 0x13}},
+	{AADDB, yxorb, Pb, [23]uint8{0x04, 0x80, 00, 0x00, 0x02}},
+	{AADDL, yaddl, Px, [23]uint8{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}},
+	{AADDPD, yxm, Pq, [23]uint8{0x58}},
+	{AADDPS, yxm, Pm, [23]uint8{0x58}},
+	{AADDQ, yaddl, Pw, [23]uint8{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}},
+	{AADDSD, yxm, Pf2, [23]uint8{0x58}},
+	{AADDSS, yxm, Pf3, [23]uint8{0x58}},
+	{AADDW, yaddl, Pe, [23]uint8{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}},
+	{AADJSP, nil, 0, [23]uint8{}},
+	{AANDB, yxorb, Pb, [23]uint8{0x24, 0x80, 04, 0x20, 0x22}},
+	{AANDL, yaddl, Px, [23]uint8{0x83, 04, 0x25, 0x81, 04, 0x21, 0x23}},
+	{AANDNPD, yxm, Pq, [23]uint8{0x55}},
+	{AANDNPS, yxm, Pm, [23]uint8{0x55}},
+	{AANDPD, yxm, Pq, [23]uint8{0x54}},
+	{AANDPS, yxm, Pq, [23]uint8{0x54}},
+	{AANDQ, yaddl, Pw, [23]uint8{0x83, 04, 0x25, 0x81, 04, 0x21, 0x23}},
+	{AANDW, yaddl, Pe, [23]uint8{0x83, 04, 0x25, 0x81, 04, 0x21, 0x23}},
+	{AARPL, yrl_ml, P32, [23]uint8{0x63}},
+	{ABOUNDL, yrl_m, P32, [23]uint8{0x62}},
+	{ABOUNDW, yrl_m, Pe, [23]uint8{0x62}},
+	{ABSFL, yml_rl, Pm, [23]uint8{0xbc}},
+	{ABSFQ, yml_rl, Pw, [23]uint8{0x0f, 0xbc}},
+	{ABSFW, yml_rl, Pq, [23]uint8{0xbc}},
+	{ABSRL, yml_rl, Pm, [23]uint8{0xbd}},
+	{ABSRQ, yml_rl, Pw, [23]uint8{0x0f, 0xbd}},
+	{ABSRW, yml_rl, Pq, [23]uint8{0xbd}},
+	{ABSWAPL, ybswap, Px, [23]uint8{0x0f, 0xc8}},
+	{ABSWAPQ, ybswap, Pw, [23]uint8{0x0f, 0xc8}},
+	{ABTCL, ybtl, Pm, [23]uint8{0xba, 07, 0xbb}},
+	{ABTCQ, ybtl, Pw, [23]uint8{0x0f, 0xba, 07, 0x0f, 0xbb}},
+	{ABTCW, ybtl, Pq, [23]uint8{0xba, 07, 0xbb}},
+	{ABTL, ybtl, Pm, [23]uint8{0xba, 04, 0xa3}},
+	{ABTQ, ybtl, Pw, [23]uint8{0x0f, 0xba, 04, 0x0f, 0xa3}},
+	{ABTRL, ybtl, Pm, [23]uint8{0xba, 06, 0xb3}},
+	{ABTRQ, ybtl, Pw, [23]uint8{0x0f, 0xba, 06, 0x0f, 0xb3}},
+	{ABTRW, ybtl, Pq, [23]uint8{0xba, 06, 0xb3}},
+	{ABTSL, ybtl, Pm, [23]uint8{0xba, 05, 0xab}},
+	{ABTSQ, ybtl, Pw, [23]uint8{0x0f, 0xba, 05, 0x0f, 0xab}},
+	{ABTSW, ybtl, Pq, [23]uint8{0xba, 05, 0xab}},
+	{ABTW, ybtl, Pq, [23]uint8{0xba, 04, 0xa3}},
+	{ABYTE, ybyte, Px, [23]uint8{1}},
+	{obj.ACALL, ycall, Px, [23]uint8{0xff, 02, 0xff, 0x15, 0xe8}},
+	{ACDQ, ynone, Px, [23]uint8{0x99}},
+	{ACLC, ynone, Px, [23]uint8{0xf8}},
+	{ACLD, ynone, Px, [23]uint8{0xfc}},
+	{ACLI, ynone, Px, [23]uint8{0xfa}},
+	{ACLTS, ynone, Pm, [23]uint8{0x06}},
+	{ACMC, ynone, Px, [23]uint8{0xf5}},
+	{ACMOVLCC, yml_rl, Pm, [23]uint8{0x43}},
+	{ACMOVLCS, yml_rl, Pm, [23]uint8{0x42}},
+	{ACMOVLEQ, yml_rl, Pm, [23]uint8{0x44}},
+	{ACMOVLGE, yml_rl, Pm, [23]uint8{0x4d}},
+	{ACMOVLGT, yml_rl, Pm, [23]uint8{0x4f}},
+	{ACMOVLHI, yml_rl, Pm, [23]uint8{0x47}},
+	{ACMOVLLE, yml_rl, Pm, [23]uint8{0x4e}},
+	{ACMOVLLS, yml_rl, Pm, [23]uint8{0x46}},
+	{ACMOVLLT, yml_rl, Pm, [23]uint8{0x4c}},
+	{ACMOVLMI, yml_rl, Pm, [23]uint8{0x48}},
+	{ACMOVLNE, yml_rl, Pm, [23]uint8{0x45}},
+	{ACMOVLOC, yml_rl, Pm, [23]uint8{0x41}},
+	{ACMOVLOS, yml_rl, Pm, [23]uint8{0x40}},
+	{ACMOVLPC, yml_rl, Pm, [23]uint8{0x4b}},
+	{ACMOVLPL, yml_rl, Pm, [23]uint8{0x49}},
+	{ACMOVLPS, yml_rl, Pm, [23]uint8{0x4a}},
+	{ACMOVQCC, yml_rl, Pw, [23]uint8{0x0f, 0x43}},
+	{ACMOVQCS, yml_rl, Pw, [23]uint8{0x0f, 0x42}},
+	{ACMOVQEQ, yml_rl, Pw, [23]uint8{0x0f, 0x44}},
+	{ACMOVQGE, yml_rl, Pw, [23]uint8{0x0f, 0x4d}},
+	{ACMOVQGT, yml_rl, Pw, [23]uint8{0x0f, 0x4f}},
+	{ACMOVQHI, yml_rl, Pw, [23]uint8{0x0f, 0x47}},
+	{ACMOVQLE, yml_rl, Pw, [23]uint8{0x0f, 0x4e}},
+	{ACMOVQLS, yml_rl, Pw, [23]uint8{0x0f, 0x46}},
+	{ACMOVQLT, yml_rl, Pw, [23]uint8{0x0f, 0x4c}},
+	{ACMOVQMI, yml_rl, Pw, [23]uint8{0x0f, 0x48}},
+	{ACMOVQNE, yml_rl, Pw, [23]uint8{0x0f, 0x45}},
+	{ACMOVQOC, yml_rl, Pw, [23]uint8{0x0f, 0x41}},
+	{ACMOVQOS, yml_rl, Pw, [23]uint8{0x0f, 0x40}},
+	{ACMOVQPC, yml_rl, Pw, [23]uint8{0x0f, 0x4b}},
+	{ACMOVQPL, yml_rl, Pw, [23]uint8{0x0f, 0x49}},
+	{ACMOVQPS, yml_rl, Pw, [23]uint8{0x0f, 0x4a}},
+	{ACMOVWCC, yml_rl, Pq, [23]uint8{0x43}},
+	{ACMOVWCS, yml_rl, Pq, [23]uint8{0x42}},
+	{ACMOVWEQ, yml_rl, Pq, [23]uint8{0x44}},
+	{ACMOVWGE, yml_rl, Pq, [23]uint8{0x4d}},
+	{ACMOVWGT, yml_rl, Pq, [23]uint8{0x4f}},
+	{ACMOVWHI, yml_rl, Pq, [23]uint8{0x47}},
+	{ACMOVWLE, yml_rl, Pq, [23]uint8{0x4e}},
+	{ACMOVWLS, yml_rl, Pq, [23]uint8{0x46}},
+	{ACMOVWLT, yml_rl, Pq, [23]uint8{0x4c}},
+	{ACMOVWMI, yml_rl, Pq, [23]uint8{0x48}},
+	{ACMOVWNE, yml_rl, Pq, [23]uint8{0x45}},
+	{ACMOVWOC, yml_rl, Pq, [23]uint8{0x41}},
+	{ACMOVWOS, yml_rl, Pq, [23]uint8{0x40}},
+	{ACMOVWPC, yml_rl, Pq, [23]uint8{0x4b}},
+	{ACMOVWPL, yml_rl, Pq, [23]uint8{0x49}},
+	{ACMOVWPS, yml_rl, Pq, [23]uint8{0x4a}},
+	{ACMPB, ycmpb, Pb, [23]uint8{0x3c, 0x80, 07, 0x38, 0x3a}},
+	{ACMPL, ycmpl, Px, [23]uint8{0x83, 07, 0x3d, 0x81, 07, 0x39, 0x3b}},
+	{ACMPPD, yxcmpi, Px, [23]uint8{Pe, 0xc2}},
+	{ACMPPS, yxcmpi, Pm, [23]uint8{0xc2, 0}},
+	{ACMPQ, ycmpl, Pw, [23]uint8{0x83, 07, 0x3d, 0x81, 07, 0x39, 0x3b}},
+	{ACMPSB, ynone, Pb, [23]uint8{0xa6}},
+	{ACMPSD, yxcmpi, Px, [23]uint8{Pf2, 0xc2}},
+	{ACMPSL, ynone, Px, [23]uint8{0xa7}},
+	{ACMPSQ, ynone, Pw, [23]uint8{0xa7}},
+	{ACMPSS, yxcmpi, Px, [23]uint8{Pf3, 0xc2}},
+	{ACMPSW, ynone, Pe, [23]uint8{0xa7}},
+	{ACMPW, ycmpl, Pe, [23]uint8{0x83, 07, 0x3d, 0x81, 07, 0x39, 0x3b}},
+	{ACOMISD, yxm, Pe, [23]uint8{0x2f}},
+	{ACOMISS, yxm, Pm, [23]uint8{0x2f}},
+	{ACPUID, ynone, Pm, [23]uint8{0xa2}},
+	{ACVTPL2PD, yxcvm2, Px, [23]uint8{Pf3, 0xe6, Pe, 0x2a}},
+	{ACVTPL2PS, yxcvm2, Pm, [23]uint8{0x5b, 0, 0x2a, 0}},
+	{ACVTPD2PL, yxcvm1, Px, [23]uint8{Pf2, 0xe6, Pe, 0x2d}},
+	{ACVTPD2PS, yxm, Pe, [23]uint8{0x5a}},
+	{ACVTPS2PL, yxcvm1, Px, [23]uint8{Pe, 0x5b, Pm, 0x2d}},
+	{ACVTPS2PD, yxm, Pm, [23]uint8{0x5a}},
+	{ACVTSD2SL, yxcvfl, Pf2, [23]uint8{0x2d}},
+	{ACVTSD2SQ, yxcvfq, Pw, [23]uint8{Pf2, 0x2d}},
+	{ACVTSD2SS, yxm, Pf2, [23]uint8{0x5a}},
+	{ACVTSL2SD, yxcvlf, Pf2, [23]uint8{0x2a}},
+	{ACVTSQ2SD, yxcvqf, Pw, [23]uint8{Pf2, 0x2a}},
+	{ACVTSL2SS, yxcvlf, Pf3, [23]uint8{0x2a}},
+	{ACVTSQ2SS, yxcvqf, Pw, [23]uint8{Pf3, 0x2a}},
+	{ACVTSS2SD, yxm, Pf3, [23]uint8{0x5a}},
+	{ACVTSS2SL, yxcvfl, Pf3, [23]uint8{0x2d}},
+	{ACVTSS2SQ, yxcvfq, Pw, [23]uint8{Pf3, 0x2d}},
+	{ACVTTPD2PL, yxcvm1, Px, [23]uint8{Pe, 0xe6, Pe, 0x2c}},
+	{ACVTTPS2PL, yxcvm1, Px, [23]uint8{Pf3, 0x5b, Pm, 0x2c}},
+	{ACVTTSD2SL, yxcvfl, Pf2, [23]uint8{0x2c}},
+	{ACVTTSD2SQ, yxcvfq, Pw, [23]uint8{Pf2, 0x2c}},
+	{ACVTTSS2SL, yxcvfl, Pf3, [23]uint8{0x2c}},
+	{ACVTTSS2SQ, yxcvfq, Pw, [23]uint8{Pf3, 0x2c}},
+	{ACWD, ynone, Pe, [23]uint8{0x99}},
+	{ACQO, ynone, Pw, [23]uint8{0x99}},
+	{ADAA, ynone, P32, [23]uint8{0x27}},
+	{ADAS, ynone, P32, [23]uint8{0x2f}},
+	{ADECB, yscond, Pb, [23]uint8{0xfe, 01}},
+	{ADECL, yincl, Px1, [23]uint8{0x48, 0xff, 01}},
+	{ADECQ, yincq, Pw, [23]uint8{0xff, 01}},
+	{ADECW, yincq, Pe, [23]uint8{0xff, 01}},
+	{ADIVB, ydivb, Pb, [23]uint8{0xf6, 06}},
+	{ADIVL, ydivl, Px, [23]uint8{0xf7, 06}},
+	{ADIVPD, yxm, Pe, [23]uint8{0x5e}},
+	{ADIVPS, yxm, Pm, [23]uint8{0x5e}},
+	{ADIVQ, ydivl, Pw, [23]uint8{0xf7, 06}},
+	{ADIVSD, yxm, Pf2, [23]uint8{0x5e}},
+	{ADIVSS, yxm, Pf3, [23]uint8{0x5e}},
+	{ADIVW, ydivl, Pe, [23]uint8{0xf7, 06}},
+	{AEMMS, ynone, Pm, [23]uint8{0x77}},
+	{AENTER, nil, 0, [23]uint8{}}, /* botch */
+	{AFXRSTOR, ysvrs, Pm, [23]uint8{0xae, 01, 0xae, 01}},
+	{AFXSAVE, ysvrs, Pm, [23]uint8{0xae, 00, 0xae, 00}},
+	{AFXRSTOR64, ysvrs, Pw, [23]uint8{0x0f, 0xae, 01, 0x0f, 0xae, 01}},
+	{AFXSAVE64, ysvrs, Pw, [23]uint8{0x0f, 0xae, 00, 0x0f, 0xae, 00}},
+	{AHLT, ynone, Px, [23]uint8{0xf4}},
+	{AIDIVB, ydivb, Pb, [23]uint8{0xf6, 07}},
+	{AIDIVL, ydivl, Px, [23]uint8{0xf7, 07}},
+	{AIDIVQ, ydivl, Pw, [23]uint8{0xf7, 07}},
+	{AIDIVW, ydivl, Pe, [23]uint8{0xf7, 07}},
+	{AIMULB, ydivb, Pb, [23]uint8{0xf6, 05}},
+	{AIMULL, yimul, Px, [23]uint8{0xf7, 05, 0x6b, 0x69, Pm, 0xaf}},
+	{AIMULQ, yimul, Pw, [23]uint8{0xf7, 05, 0x6b, 0x69, Pm, 0xaf}},
+	{AIMULW, yimul, Pe, [23]uint8{0xf7, 05, 0x6b, 0x69, Pm, 0xaf}},
+	{AIMUL3Q, yimul3, Pw, [23]uint8{0x6b, 00}},
+	{AINB, yin, Pb, [23]uint8{0xe4, 0xec}},
+	{AINCB, yscond, Pb, [23]uint8{0xfe, 00}},
+	{AINCL, yincl, Px1, [23]uint8{0x40, 0xff, 00}},
+	{AINCQ, yincq, Pw, [23]uint8{0xff, 00}},
+	{AINCW, yincq, Pe, [23]uint8{0xff, 00}},
+	{AINL, yin, Px, [23]uint8{0xe5, 0xed}},
+	{AINSB, ynone, Pb, [23]uint8{0x6c}},
+	{AINSL, ynone, Px, [23]uint8{0x6d}},
+	{AINSW, ynone, Pe, [23]uint8{0x6d}},
+	{AINT, yint, Px, [23]uint8{0xcd}},
+	{AINTO, ynone, P32, [23]uint8{0xce}},
+	{AINW, yin, Pe, [23]uint8{0xe5, 0xed}},
+	{AIRETL, ynone, Px, [23]uint8{0xcf}},
+	{AIRETQ, ynone, Pw, [23]uint8{0xcf}},
+	{AIRETW, ynone, Pe, [23]uint8{0xcf}},
+	{AJCC, yjcond, Px, [23]uint8{0x73, 0x83, 00}},
+	{AJCS, yjcond, Px, [23]uint8{0x72, 0x82}},
+	{AJCXZL, yloop, Px, [23]uint8{0xe3}},
+	{AJCXZW, yloop, Px, [23]uint8{0xe3}},
+	{AJCXZQ, yloop, Px, [23]uint8{0xe3}},
+	{AJEQ, yjcond, Px, [23]uint8{0x74, 0x84}},
+	{AJGE, yjcond, Px, [23]uint8{0x7d, 0x8d}},
+	{AJGT, yjcond, Px, [23]uint8{0x7f, 0x8f}},
+	{AJHI, yjcond, Px, [23]uint8{0x77, 0x87}},
+	{AJLE, yjcond, Px, [23]uint8{0x7e, 0x8e}},
+	{AJLS, yjcond, Px, [23]uint8{0x76, 0x86}},
+	{AJLT, yjcond, Px, [23]uint8{0x7c, 0x8c}},
+	{AJMI, yjcond, Px, [23]uint8{0x78, 0x88}},
+	{obj.AJMP, yjmp, Px, [23]uint8{0xff, 04, 0xeb, 0xe9}},
+	{AJNE, yjcond, Px, [23]uint8{0x75, 0x85}},
+	{AJOC, yjcond, Px, [23]uint8{0x71, 0x81, 00}},
+	{AJOS, yjcond, Px, [23]uint8{0x70, 0x80, 00}},
+	{AJPC, yjcond, Px, [23]uint8{0x7b, 0x8b}},
+	{AJPL, yjcond, Px, [23]uint8{0x79, 0x89}},
+	{AJPS, yjcond, Px, [23]uint8{0x7a, 0x8a}},
+	{AHADDPD, yxm, Pq, [23]uint8{0x7c}},
+	{AHADDPS, yxm, Pf2, [23]uint8{0x7c}},
+	{AHSUBPD, yxm, Pq, [23]uint8{0x7d}},
+	{AHSUBPS, yxm, Pf2, [23]uint8{0x7d}},
+	{ALAHF, ynone, Px, [23]uint8{0x9f}},
+	{ALARL, yml_rl, Pm, [23]uint8{0x02}},
+	{ALARW, yml_rl, Pq, [23]uint8{0x02}},
+	{ALDDQU, ylddqu, Pf2, [23]uint8{0xf0}},
+	{ALDMXCSR, ysvrs, Pm, [23]uint8{0xae, 02, 0xae, 02}},
+	{ALEAL, ym_rl, Px, [23]uint8{0x8d}},
+	{ALEAQ, ym_rl, Pw, [23]uint8{0x8d}},
+	{ALEAVEL, ynone, P32, [23]uint8{0xc9}},
+	{ALEAVEQ, ynone, Py, [23]uint8{0xc9}},
+	{ALEAVEW, ynone, Pe, [23]uint8{0xc9}},
+	{ALEAW, ym_rl, Pe, [23]uint8{0x8d}},
+	{ALOCK, ynone, Px, [23]uint8{0xf0}},
+	{ALODSB, ynone, Pb, [23]uint8{0xac}},
+	{ALODSL, ynone, Px, [23]uint8{0xad}},
+	{ALODSQ, ynone, Pw, [23]uint8{0xad}},
+	{ALODSW, ynone, Pe, [23]uint8{0xad}},
+	{ALONG, ybyte, Px, [23]uint8{4}},
+	{ALOOP, yloop, Px, [23]uint8{0xe2}},
+	{ALOOPEQ, yloop, Px, [23]uint8{0xe1}},
+	{ALOOPNE, yloop, Px, [23]uint8{0xe0}},
+	{ALSLL, yml_rl, Pm, [23]uint8{0x03}},
+	{ALSLW, yml_rl, Pq, [23]uint8{0x03}},
+	{AMASKMOVOU, yxr, Pe, [23]uint8{0xf7}},
+	{AMASKMOVQ, ymr, Pm, [23]uint8{0xf7}},
+	{AMAXPD, yxm, Pe, [23]uint8{0x5f}},
+	{AMAXPS, yxm, Pm, [23]uint8{0x5f}},
+	{AMAXSD, yxm, Pf2, [23]uint8{0x5f}},
+	{AMAXSS, yxm, Pf3, [23]uint8{0x5f}},
+	{AMINPD, yxm, Pe, [23]uint8{0x5d}},
+	{AMINPS, yxm, Pm, [23]uint8{0x5d}},
+	{AMINSD, yxm, Pf2, [23]uint8{0x5d}},
+	{AMINSS, yxm, Pf3, [23]uint8{0x5d}},
+	{AMOVAPD, yxmov, Pe, [23]uint8{0x28, 0x29}},
+	{AMOVAPS, yxmov, Pm, [23]uint8{0x28, 0x29}},
+	{AMOVB, ymovb, Pb, [23]uint8{0x88, 0x8a, 0xb0, 0xc6, 00}},
+	{AMOVBLSX, ymb_rl, Pm, [23]uint8{0xbe}},
+	{AMOVBLZX, ymb_rl, Pm, [23]uint8{0xb6}},
+	{AMOVBQSX, ymb_rl, Pw, [23]uint8{0x0f, 0xbe}},
+	{AMOVBQZX, ymb_rl, Pm, [23]uint8{0xb6}},
+	{AMOVBWSX, ymb_rl, Pq, [23]uint8{0xbe}},
+	{AMOVBWZX, ymb_rl, Pq, [23]uint8{0xb6}},
+	{AMOVO, yxmov, Pe, [23]uint8{0x6f, 0x7f}},
+	{AMOVOU, yxmov, Pf3, [23]uint8{0x6f, 0x7f}},
+	{AMOVHLPS, yxr, Pm, [23]uint8{0x12}},
+	{AMOVHPD, yxmov, Pe, [23]uint8{0x16, 0x17}},
+	{AMOVHPS, yxmov, Pm, [23]uint8{0x16, 0x17}},
+	{AMOVL, ymovl, Px, [23]uint8{0x89, 0x8b, 0x31, 0xb8, 0xc7, 00, 0x6e, 0x7e, Pe, 0x6e, Pe, 0x7e, 0}},
+	{AMOVLHPS, yxr, Pm, [23]uint8{0x16}},
+	{AMOVLPD, yxmov, Pe, [23]uint8{0x12, 0x13}},
+	{AMOVLPS, yxmov, Pm, [23]uint8{0x12, 0x13}},
+	{AMOVLQSX, yml_rl, Pw, [23]uint8{0x63}},
+	{AMOVLQZX, yml_rl, Px, [23]uint8{0x8b}},
+	{AMOVMSKPD, yxrrl, Pq, [23]uint8{0x50}},
+	{AMOVMSKPS, yxrrl, Pm, [23]uint8{0x50}},
+	{AMOVNTO, yxr_ml, Pe, [23]uint8{0xe7}},
+	{AMOVNTPD, yxr_ml, Pe, [23]uint8{0x2b}},
+	{AMOVNTPS, yxr_ml, Pm, [23]uint8{0x2b}},
+	{AMOVNTQ, ymr_ml, Pm, [23]uint8{0xe7}},
+	{AMOVQ, ymovq, Pw8, [23]uint8{0x6f, 0x7f, Pf2, 0xd6, Pf3, 0x7e, Pe, 0xd6, 0x89, 0x8b, 0x31, 0xc7, 00, 0xb8, 0xc7, 00, 0x6e, 0x7e, Pe, 0x6e, Pe, 0x7e, 0}},
+	{AMOVQOZX, ymrxr, Pf3, [23]uint8{0xd6, 0x7e}},
+	{AMOVSB, ynone, Pb, [23]uint8{0xa4}},
+	{AMOVSD, yxmov, Pf2, [23]uint8{0x10, 0x11}},
+	{AMOVSL, ynone, Px, [23]uint8{0xa5}},
+	{AMOVSQ, ynone, Pw, [23]uint8{0xa5}},
+	{AMOVSS, yxmov, Pf3, [23]uint8{0x10, 0x11}},
+	{AMOVSW, ynone, Pe, [23]uint8{0xa5}},
+	{AMOVUPD, yxmov, Pe, [23]uint8{0x10, 0x11}},
+	{AMOVUPS, yxmov, Pm, [23]uint8{0x10, 0x11}},
+	{AMOVW, ymovw, Pe, [23]uint8{0x89, 0x8b, 0x31, 0xb8, 0xc7, 00, 0}},
+	{AMOVWLSX, yml_rl, Pm, [23]uint8{0xbf}},
+	{AMOVWLZX, yml_rl, Pm, [23]uint8{0xb7}},
+	{AMOVWQSX, yml_rl, Pw, [23]uint8{0x0f, 0xbf}},
+	{AMOVWQZX, yml_rl, Pw, [23]uint8{0x0f, 0xb7}},
+	{AMULB, ydivb, Pb, [23]uint8{0xf6, 04}},
+	{AMULL, ydivl, Px, [23]uint8{0xf7, 04}},
+	{AMULPD, yxm, Pe, [23]uint8{0x59}},
+	{AMULPS, yxm, Ym, [23]uint8{0x59}},
+	{AMULQ, ydivl, Pw, [23]uint8{0xf7, 04}},
+	{AMULSD, yxm, Pf2, [23]uint8{0x59}},
+	{AMULSS, yxm, Pf3, [23]uint8{0x59}},
+	{AMULW, ydivl, Pe, [23]uint8{0xf7, 04}},
+	{ANEGB, yscond, Pb, [23]uint8{0xf6, 03}},
+	{ANEGL, yscond, Px, [23]uint8{0xf7, 03}},
+	{ANEGQ, yscond, Pw, [23]uint8{0xf7, 03}},
+	{ANEGW, yscond, Pe, [23]uint8{0xf7, 03}},
+	{obj.ANOP, ynop, Px, [23]uint8{0, 0}},
+	{ANOTB, yscond, Pb, [23]uint8{0xf6, 02}},
+	{ANOTL, yscond, Px, [23]uint8{0xf7, 02}}, // TODO(rsc): yscond is wrong here.
+	{ANOTQ, yscond, Pw, [23]uint8{0xf7, 02}},
+	{ANOTW, yscond, Pe, [23]uint8{0xf7, 02}},
+	{AORB, yxorb, Pb, [23]uint8{0x0c, 0x80, 01, 0x08, 0x0a}},
+	{AORL, yaddl, Px, [23]uint8{0x83, 01, 0x0d, 0x81, 01, 0x09, 0x0b}},
+	{AORPD, yxm, Pq, [23]uint8{0x56}},
+	{AORPS, yxm, Pm, [23]uint8{0x56}},
+	{AORQ, yaddl, Pw, [23]uint8{0x83, 01, 0x0d, 0x81, 01, 0x09, 0x0b}},
+	{AORW, yaddl, Pe, [23]uint8{0x83, 01, 0x0d, 0x81, 01, 0x09, 0x0b}},
+	{AOUTB, yin, Pb, [23]uint8{0xe6, 0xee}},
+	{AOUTL, yin, Px, [23]uint8{0xe7, 0xef}},
+	{AOUTSB, ynone, Pb, [23]uint8{0x6e}},
+	{AOUTSL, ynone, Px, [23]uint8{0x6f}},
+	{AOUTSW, ynone, Pe, [23]uint8{0x6f}},
+	{AOUTW, yin, Pe, [23]uint8{0xe7, 0xef}},
+	{APACKSSLW, ymm, Py1, [23]uint8{0x6b, Pe, 0x6b}},
+	{APACKSSWB, ymm, Py1, [23]uint8{0x63, Pe, 0x63}},
+	{APACKUSWB, ymm, Py1, [23]uint8{0x67, Pe, 0x67}},
+	{APADDB, ymm, Py1, [23]uint8{0xfc, Pe, 0xfc}},
+	{APADDL, ymm, Py1, [23]uint8{0xfe, Pe, 0xfe}},
+	{APADDQ, yxm, Pe, [23]uint8{0xd4}},
+	{APADDSB, ymm, Py1, [23]uint8{0xec, Pe, 0xec}},
+	{APADDSW, ymm, Py1, [23]uint8{0xed, Pe, 0xed}},
+	{APADDUSB, ymm, Py1, [23]uint8{0xdc, Pe, 0xdc}},
+	{APADDUSW, ymm, Py1, [23]uint8{0xdd, Pe, 0xdd}},
+	{APADDW, ymm, Py1, [23]uint8{0xfd, Pe, 0xfd}},
+	{APAND, ymm, Py1, [23]uint8{0xdb, Pe, 0xdb}},
+	{APANDN, ymm, Py1, [23]uint8{0xdf, Pe, 0xdf}},
+	{APAUSE, ynone, Px, [23]uint8{0xf3, 0x90}},
+	{APAVGB, ymm, Py1, [23]uint8{0xe0, Pe, 0xe0}},
+	{APAVGW, ymm, Py1, [23]uint8{0xe3, Pe, 0xe3}},
+	{APCMPEQB, ymm, Py1, [23]uint8{0x74, Pe, 0x74}},
+	{APCMPEQL, ymm, Py1, [23]uint8{0x76, Pe, 0x76}},
+	{APCMPEQW, ymm, Py1, [23]uint8{0x75, Pe, 0x75}},
+	{APCMPGTB, ymm, Py1, [23]uint8{0x64, Pe, 0x64}},
+	{APCMPGTL, ymm, Py1, [23]uint8{0x66, Pe, 0x66}},
+	{APCMPGTW, ymm, Py1, [23]uint8{0x65, Pe, 0x65}},
+	{APEXTRW, yextrw, Pq, [23]uint8{0xc5, 00}},
+	{APEXTRB, yextr, Pq, [23]uint8{0x3a, 0x14, 00}},
+	{APEXTRD, yextr, Pq, [23]uint8{0x3a, 0x16, 00}},
+	{APEXTRQ, yextr, Pq3, [23]uint8{0x3a, 0x16, 00}},
+	{APHADDD, ymmxmm0f38, Px, [23]uint8{0x0F, 0x38, 0x02, 0, 0x66, 0x0F, 0x38, 0x02, 0}},
+	{APHADDSW, yxm_q4, Pq4, [23]uint8{0x03}},
+	{APHADDW, yxm_q4, Pq4, [23]uint8{0x01}},
+	{APHMINPOSUW, yxm_q4, Pq4, [23]uint8{0x41}},
+	{APHSUBD, yxm_q4, Pq4, [23]uint8{0x06}},
+	{APHSUBSW, yxm_q4, Pq4, [23]uint8{0x07}},
+	{APHSUBW, yxm_q4, Pq4, [23]uint8{0x05}},
+	{APINSRW, yinsrw, Pq, [23]uint8{0xc4, 00}},
+	{APINSRB, yinsr, Pq, [23]uint8{0x3a, 0x20, 00}},
+	{APINSRD, yinsr, Pq, [23]uint8{0x3a, 0x22, 00}},
+	{APINSRQ, yinsr, Pq3, [23]uint8{0x3a, 0x22, 00}},
+	{APMADDWL, ymm, Py1, [23]uint8{0xf5, Pe, 0xf5}},
+	{APMAXSW, yxm, Pe, [23]uint8{0xee}},
+	{APMAXUB, yxm, Pe, [23]uint8{0xde}},
+	{APMINSW, yxm, Pe, [23]uint8{0xea}},
+	{APMINUB, yxm, Pe, [23]uint8{0xda}},
+	{APMOVMSKB, ymskb, Px, [23]uint8{Pe, 0xd7, 0xd7}},
+	{APMOVSXBD, yxm_q4, Pq4, [23]uint8{0x21}},
+	{APMOVSXBQ, yxm_q4, Pq4, [23]uint8{0x22}},
+	{APMOVSXBW, yxm_q4, Pq4, [23]uint8{0x20}},
+	{APMOVSXDQ, yxm_q4, Pq4, [23]uint8{0x25}},
+	{APMOVSXWD, yxm_q4, Pq4, [23]uint8{0x23}},
+	{APMOVSXWQ, yxm_q4, Pq4, [23]uint8{0x24}},
+	{APMOVZXBD, yxm_q4, Pq4, [23]uint8{0x31}},
+	{APMOVZXBQ, yxm_q4, Pq4, [23]uint8{0x32}},
+	{APMOVZXBW, yxm_q4, Pq4, [23]uint8{0x30}},
+	{APMOVZXDQ, yxm_q4, Pq4, [23]uint8{0x35}},
+	{APMOVZXWD, yxm_q4, Pq4, [23]uint8{0x33}},
+	{APMOVZXWQ, yxm_q4, Pq4, [23]uint8{0x34}},
+	{APMULDQ, yxm_q4, Pq4, [23]uint8{0x28}},
+	{APMULHUW, ymm, Py1, [23]uint8{0xe4, Pe, 0xe4}},
+	{APMULHW, ymm, Py1, [23]uint8{0xe5, Pe, 0xe5}},
+	{APMULLD, yxm_q4, Pq4, [23]uint8{0x40}},
+	{APMULLW, ymm, Py1, [23]uint8{0xd5, Pe, 0xd5}},
+	{APMULULQ, ymm, Py1, [23]uint8{0xf4, Pe, 0xf4}},
+	{APOPAL, ynone, P32, [23]uint8{0x61}},
+	{APOPAW, ynone, Pe, [23]uint8{0x61}},
+	{APOPCNTW, yml_rl, Pef3, [23]uint8{0xb8}},
+	{APOPCNTL, yml_rl, Pf3, [23]uint8{0xb8}},
+	{APOPCNTQ, yml_rl, Pfw, [23]uint8{0xb8}},
+	{APOPFL, ynone, P32, [23]uint8{0x9d}},
+	{APOPFQ, ynone, Py, [23]uint8{0x9d}},
+	{APOPFW, ynone, Pe, [23]uint8{0x9d}},
+	{APOPL, ypopl, P32, [23]uint8{0x58, 0x8f, 00}},
+	{APOPQ, ypopl, Py, [23]uint8{0x58, 0x8f, 00}},
+	{APOPW, ypopl, Pe, [23]uint8{0x58, 0x8f, 00}},
+	{APOR, ymm, Py1, [23]uint8{0xeb, Pe, 0xeb}},
+	{APSADBW, yxm, Pq, [23]uint8{0xf6}},
+	{APSHUFHW, yxshuf, Pf3, [23]uint8{0x70, 00}},
+	{APSHUFL, yxshuf, Pq, [23]uint8{0x70, 00}},
+	{APSHUFLW, yxshuf, Pf2, [23]uint8{0x70, 00}},
+	{APSHUFW, ymshuf, Pm, [23]uint8{0x70, 00}},
+	{APSHUFB, ymshufb, Pq, [23]uint8{0x38, 0x00}},
+	{APSLLO, ypsdq, Pq, [23]uint8{0x73, 07}},
+	{APSLLL, yps, Py3, [23]uint8{0xf2, 0x72, 06, Pe, 0xf2, Pe, 0x72, 06}},
+	{APSLLQ, yps, Py3, [23]uint8{0xf3, 0x73, 06, Pe, 0xf3, Pe, 0x73, 06}},
+	{APSLLW, yps, Py3, [23]uint8{0xf1, 0x71, 06, Pe, 0xf1, Pe, 0x71, 06}},
+	{APSRAL, yps, Py3, [23]uint8{0xe2, 0x72, 04, Pe, 0xe2, Pe, 0x72, 04}},
+	{APSRAW, yps, Py3, [23]uint8{0xe1, 0x71, 04, Pe, 0xe1, Pe, 0x71, 04}},
+	{APSRLO, ypsdq, Pq, [23]uint8{0x73, 03}},
+	{APSRLL, yps, Py3, [23]uint8{0xd2, 0x72, 02, Pe, 0xd2, Pe, 0x72, 02}},
+	{APSRLQ, yps, Py3, [23]uint8{0xd3, 0x73, 02, Pe, 0xd3, Pe, 0x73, 02}},
+	{APSRLW, yps, Py3, [23]uint8{0xd1, 0x71, 02, Pe, 0xd1, Pe, 0x71, 02}},
+	{APSUBB, yxm, Pe, [23]uint8{0xf8}},
+	{APSUBL, yxm, Pe, [23]uint8{0xfa}},
+	{APSUBQ, yxm, Pe, [23]uint8{0xfb}},
+	{APSUBSB, yxm, Pe, [23]uint8{0xe8}},
+	{APSUBSW, yxm, Pe, [23]uint8{0xe9}},
+	{APSUBUSB, yxm, Pe, [23]uint8{0xd8}},
+	{APSUBUSW, yxm, Pe, [23]uint8{0xd9}},
+	{APSUBW, yxm, Pe, [23]uint8{0xf9}},
+	{APUNPCKHBW, ymm, Py1, [23]uint8{0x68, Pe, 0x68}},
+	{APUNPCKHLQ, ymm, Py1, [23]uint8{0x6a, Pe, 0x6a}},
+	{APUNPCKHQDQ, yxm, Pe, [23]uint8{0x6d}},
+	{APUNPCKHWL, ymm, Py1, [23]uint8{0x69, Pe, 0x69}},
+	{APUNPCKLBW, ymm, Py1, [23]uint8{0x60, Pe, 0x60}},
+	{APUNPCKLLQ, ymm, Py1, [23]uint8{0x62, Pe, 0x62}},
+	{APUNPCKLQDQ, yxm, Pe, [23]uint8{0x6c}},
+	{APUNPCKLWL, ymm, Py1, [23]uint8{0x61, Pe, 0x61}},
+	{APUSHAL, ynone, P32, [23]uint8{0x60}},
+	{APUSHAW, ynone, Pe, [23]uint8{0x60}},
+	{APUSHFL, ynone, P32, [23]uint8{0x9c}},
+	{APUSHFQ, ynone, Py, [23]uint8{0x9c}},
+	{APUSHFW, ynone, Pe, [23]uint8{0x9c}},
+	{APUSHL, ypushl, P32, [23]uint8{0x50, 0xff, 06, 0x6a, 0x68}},
+	{APUSHQ, ypushl, Py, [23]uint8{0x50, 0xff, 06, 0x6a, 0x68}},
+	{APUSHW, ypushl, Pe, [23]uint8{0x50, 0xff, 06, 0x6a, 0x68}},
+	{APXOR, ymm, Py1, [23]uint8{0xef, Pe, 0xef}},
+	{AQUAD, ybyte, Px, [23]uint8{8}},
+	{ARCLB, yshb, Pb, [23]uint8{0xd0, 02, 0xc0, 02, 0xd2, 02}},
+	{ARCLL, yshl, Px, [23]uint8{0xd1, 02, 0xc1, 02, 0xd3, 02, 0xd3, 02}},
+	{ARCLQ, yshl, Pw, [23]uint8{0xd1, 02, 0xc1, 02, 0xd3, 02, 0xd3, 02}},
+	{ARCLW, yshl, Pe, [23]uint8{0xd1, 02, 0xc1, 02, 0xd3, 02, 0xd3, 02}},
+	{ARCPPS, yxm, Pm, [23]uint8{0x53}},
+	{ARCPSS, yxm, Pf3, [23]uint8{0x53}},
+	{ARCRB, yshb, Pb, [23]uint8{0xd0, 03, 0xc0, 03, 0xd2, 03}},
+	{ARCRL, yshl, Px, [23]uint8{0xd1, 03, 0xc1, 03, 0xd3, 03, 0xd3, 03}},
+	{ARCRQ, yshl, Pw, [23]uint8{0xd1, 03, 0xc1, 03, 0xd3, 03, 0xd3, 03}},
+	{ARCRW, yshl, Pe, [23]uint8{0xd1, 03, 0xc1, 03, 0xd3, 03, 0xd3, 03}},
+	{AREP, ynone, Px, [23]uint8{0xf3}},
+	{AREPN, ynone, Px, [23]uint8{0xf2}},
+	{obj.ARET, ynone, Px, [23]uint8{0xc3}},
+	{ARETFW, yret, Pe, [23]uint8{0xcb, 0xca}},
+	{ARETFL, yret, Px, [23]uint8{0xcb, 0xca}},
+	{ARETFQ, yret, Pw, [23]uint8{0xcb, 0xca}},
+	{AROLB, yshb, Pb, [23]uint8{0xd0, 00, 0xc0, 00, 0xd2, 00}},
+	{AROLL, yshl, Px, [23]uint8{0xd1, 00, 0xc1, 00, 0xd3, 00, 0xd3, 00}},
+	{AROLQ, yshl, Pw, [23]uint8{0xd1, 00, 0xc1, 00, 0xd3, 00, 0xd3, 00}},
+	{AROLW, yshl, Pe, [23]uint8{0xd1, 00, 0xc1, 00, 0xd3, 00, 0xd3, 00}},
+	{ARORB, yshb, Pb, [23]uint8{0xd0, 01, 0xc0, 01, 0xd2, 01}},
+	{ARORL, yshl, Px, [23]uint8{0xd1, 01, 0xc1, 01, 0xd3, 01, 0xd3, 01}},
+	{ARORQ, yshl, Pw, [23]uint8{0xd1, 01, 0xc1, 01, 0xd3, 01, 0xd3, 01}},
+	{ARORW, yshl, Pe, [23]uint8{0xd1, 01, 0xc1, 01, 0xd3, 01, 0xd3, 01}},
+	{ARSQRTPS, yxm, Pm, [23]uint8{0x52}},
+	{ARSQRTSS, yxm, Pf3, [23]uint8{0x52}},
+	{ASAHF, ynone, Px1, [23]uint8{0x9e, 00, 0x86, 0xe0, 0x50, 0x9d}}, /* XCHGB AH,AL; PUSH AX; POPFL */
+	{ASALB, yshb, Pb, [23]uint8{0xd0, 04, 0xc0, 04, 0xd2, 04}},
+	{ASALL, yshl, Px, [23]uint8{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}},
+	{ASALQ, yshl, Pw, [23]uint8{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}},
+	{ASALW, yshl, Pe, [23]uint8{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}},
+	{ASARB, yshb, Pb, [23]uint8{0xd0, 07, 0xc0, 07, 0xd2, 07}},
+	{ASARL, yshl, Px, [23]uint8{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}},
+	{ASARQ, yshl, Pw, [23]uint8{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}},
+	{ASARW, yshl, Pe, [23]uint8{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}},
+	{ASBBB, yxorb, Pb, [23]uint8{0x1c, 0x80, 03, 0x18, 0x1a}},
+	{ASBBL, yaddl, Px, [23]uint8{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}},
+	{ASBBQ, yaddl, Pw, [23]uint8{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}},
+	{ASBBW, yaddl, Pe, [23]uint8{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}},
+	{ASCASB, ynone, Pb, [23]uint8{0xae}},
+	{ASCASL, ynone, Px, [23]uint8{0xaf}},
+	{ASCASQ, ynone, Pw, [23]uint8{0xaf}},
+	{ASCASW, ynone, Pe, [23]uint8{0xaf}},
+	{ASETCC, yscond, Pb, [23]uint8{0x0f, 0x93, 00}},
+	{ASETCS, yscond, Pb, [23]uint8{0x0f, 0x92, 00}},
+	{ASETEQ, yscond, Pb, [23]uint8{0x0f, 0x94, 00}},
+	{ASETGE, yscond, Pb, [23]uint8{0x0f, 0x9d, 00}},
+	{ASETGT, yscond, Pb, [23]uint8{0x0f, 0x9f, 00}},
+	{ASETHI, yscond, Pb, [23]uint8{0x0f, 0x97, 00}},
+	{ASETLE, yscond, Pb, [23]uint8{0x0f, 0x9e, 00}},
+	{ASETLS, yscond, Pb, [23]uint8{0x0f, 0x96, 00}},
+	{ASETLT, yscond, Pb, [23]uint8{0x0f, 0x9c, 00}},
+	{ASETMI, yscond, Pb, [23]uint8{0x0f, 0x98, 00}},
+	{ASETNE, yscond, Pb, [23]uint8{0x0f, 0x95, 00}},
+	{ASETOC, yscond, Pb, [23]uint8{0x0f, 0x91, 00}},
+	{ASETOS, yscond, Pb, [23]uint8{0x0f, 0x90, 00}},
+	{ASETPC, yscond, Pb, [23]uint8{0x0f, 0x9b, 00}},
+	{ASETPL, yscond, Pb, [23]uint8{0x0f, 0x99, 00}},
+	{ASETPS, yscond, Pb, [23]uint8{0x0f, 0x9a, 00}},
+	{ASHLB, yshb, Pb, [23]uint8{0xd0, 04, 0xc0, 04, 0xd2, 04}},
+	{ASHLL, yshl, Px, [23]uint8{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}},
+	{ASHLQ, yshl, Pw, [23]uint8{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}},
+	{ASHLW, yshl, Pe, [23]uint8{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}},
+	{ASHRB, yshb, Pb, [23]uint8{0xd0, 05, 0xc0, 05, 0xd2, 05}},
+	{ASHRL, yshl, Px, [23]uint8{0xd1, 05, 0xc1, 05, 0xd3, 05, 0xd3, 05}},
+	{ASHRQ, yshl, Pw, [23]uint8{0xd1, 05, 0xc1, 05, 0xd3, 05, 0xd3, 05}},
+	{ASHRW, yshl, Pe, [23]uint8{0xd1, 05, 0xc1, 05, 0xd3, 05, 0xd3, 05}},
+	{ASHUFPD, yxshuf, Pq, [23]uint8{0xc6, 00}},
+	{ASHUFPS, yxshuf, Pm, [23]uint8{0xc6, 00}},
+	{ASQRTPD, yxm, Pe, [23]uint8{0x51}},
+	{ASQRTPS, yxm, Pm, [23]uint8{0x51}},
+	{ASQRTSD, yxm, Pf2, [23]uint8{0x51}},
+	{ASQRTSS, yxm, Pf3, [23]uint8{0x51}},
+	{ASTC, ynone, Px, [23]uint8{0xf9}},
+	{ASTD, ynone, Px, [23]uint8{0xfd}},
+	{ASTI, ynone, Px, [23]uint8{0xfb}},
+	{ASTMXCSR, ysvrs, Pm, [23]uint8{0xae, 03, 0xae, 03}},
+	{ASTOSB, ynone, Pb, [23]uint8{0xaa}},
+	{ASTOSL, ynone, Px, [23]uint8{0xab}},
+	{ASTOSQ, ynone, Pw, [23]uint8{0xab}},
+	{ASTOSW, ynone, Pe, [23]uint8{0xab}},
+	{ASUBB, yxorb, Pb, [23]uint8{0x2c, 0x80, 05, 0x28, 0x2a}},
+	{ASUBL, yaddl, Px, [23]uint8{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}},
+	{ASUBPD, yxm, Pe, [23]uint8{0x5c}},
+	{ASUBPS, yxm, Pm, [23]uint8{0x5c}},
+	{ASUBQ, yaddl, Pw, [23]uint8{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}},
+	{ASUBSD, yxm, Pf2, [23]uint8{0x5c}},
+	{ASUBSS, yxm, Pf3, [23]uint8{0x5c}},
+	{ASUBW, yaddl, Pe, [23]uint8{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}},
+	{ASWAPGS, ynone, Pm, [23]uint8{0x01, 0xf8}},
+	{ASYSCALL, ynone, Px, [23]uint8{0x0f, 0x05}}, /* fast syscall */
+	{ATESTB, yxorb, Pb, [23]uint8{0xa8, 0xf6, 00, 0x84, 0x84}},
+	{ATESTL, ytestl, Px, [23]uint8{0xa9, 0xf7, 00, 0x85, 0x85}},
+	{ATESTQ, ytestl, Pw, [23]uint8{0xa9, 0xf7, 00, 0x85, 0x85}},
+	{ATESTW, ytestl, Pe, [23]uint8{0xa9, 0xf7, 00, 0x85, 0x85}},
+	{obj.ATEXT, ytext, Px, [23]uint8{}},
+	{AUCOMISD, yxm, Pe, [23]uint8{0x2e}},
+	{AUCOMISS, yxm, Pm, [23]uint8{0x2e}},
+	{AUNPCKHPD, yxm, Pe, [23]uint8{0x15}},
+	{AUNPCKHPS, yxm, Pm, [23]uint8{0x15}},
+	{AUNPCKLPD, yxm, Pe, [23]uint8{0x14}},
+	{AUNPCKLPS, yxm, Pm, [23]uint8{0x14}},
+	{AVERR, ydivl, Pm, [23]uint8{0x00, 04}},
+	{AVERW, ydivl, Pm, [23]uint8{0x00, 05}},
+	{AWAIT, ynone, Px, [23]uint8{0x9b}},
+	{AWORD, ybyte, Px, [23]uint8{2}},
+	{AXCHGB, yml_mb, Pb, [23]uint8{0x86, 0x86}},
+	{AXCHGL, yxchg, Px, [23]uint8{0x90, 0x90, 0x87, 0x87}},
+	{AXCHGQ, yxchg, Pw, [23]uint8{0x90, 0x90, 0x87, 0x87}},
+	{AXCHGW, yxchg, Pe, [23]uint8{0x90, 0x90, 0x87, 0x87}},
+	{AXLAT, ynone, Px, [23]uint8{0xd7}},
+	{AXORB, yxorb, Pb, [23]uint8{0x34, 0x80, 06, 0x30, 0x32}},
+	{AXORL, yaddl, Px, [23]uint8{0x83, 06, 0x35, 0x81, 06, 0x31, 0x33}},
+	{AXORPD, yxm, Pe, [23]uint8{0x57}},
+	{AXORPS, yxm, Pm, [23]uint8{0x57}},
+	{AXORQ, yaddl, Pw, [23]uint8{0x83, 06, 0x35, 0x81, 06, 0x31, 0x33}},
+	{AXORW, yaddl, Pe, [23]uint8{0x83, 06, 0x35, 0x81, 06, 0x31, 0x33}},
+	{AFMOVB, yfmvx, Px, [23]uint8{0xdf, 04}},
+	{AFMOVBP, yfmvp, Px, [23]uint8{0xdf, 06}},
+	{AFMOVD, yfmvd, Px, [23]uint8{0xdd, 00, 0xdd, 02, 0xd9, 00, 0xdd, 02}},
+	{AFMOVDP, yfmvdp, Px, [23]uint8{0xdd, 03, 0xdd, 03}},
+	{AFMOVF, yfmvf, Px, [23]uint8{0xd9, 00, 0xd9, 02}},
+	{AFMOVFP, yfmvp, Px, [23]uint8{0xd9, 03}},
+	{AFMOVL, yfmvf, Px, [23]uint8{0xdb, 00, 0xdb, 02}},
+	{AFMOVLP, yfmvp, Px, [23]uint8{0xdb, 03}},
+	{AFMOVV, yfmvx, Px, [23]uint8{0xdf, 05}},
+	{AFMOVVP, yfmvp, Px, [23]uint8{0xdf, 07}},
+	{AFMOVW, yfmvf, Px, [23]uint8{0xdf, 00, 0xdf, 02}},
+	{AFMOVWP, yfmvp, Px, [23]uint8{0xdf, 03}},
+	{AFMOVX, yfmvx, Px, [23]uint8{0xdb, 05}},
+	{AFMOVXP, yfmvp, Px, [23]uint8{0xdb, 07}},
+	{AFCMOVCC, yfcmv, Px, [23]uint8{0xdb, 00}},
+	{AFCMOVCS, yfcmv, Px, [23]uint8{0xda, 00}},
+	{AFCMOVEQ, yfcmv, Px, [23]uint8{0xda, 01}},
+	{AFCMOVHI, yfcmv, Px, [23]uint8{0xdb, 02}},
+	{AFCMOVLS, yfcmv, Px, [23]uint8{0xda, 02}},
+	{AFCMOVNE, yfcmv, Px, [23]uint8{0xdb, 01}},
+	{AFCMOVNU, yfcmv, Px, [23]uint8{0xdb, 03}},
+	{AFCMOVUN, yfcmv, Px, [23]uint8{0xda, 03}},
+	{AFCOMD, yfadd, Px, [23]uint8{0xdc, 02, 0xd8, 02, 0xdc, 02}},  /* botch */
+	{AFCOMDP, yfadd, Px, [23]uint8{0xdc, 03, 0xd8, 03, 0xdc, 03}}, /* botch */
+	{AFCOMDPP, ycompp, Px, [23]uint8{0xde, 03}},
+	{AFCOMF, yfmvx, Px, [23]uint8{0xd8, 02}},
+	{AFCOMFP, yfmvx, Px, [23]uint8{0xd8, 03}},
+	{AFCOMI, yfmvx, Px, [23]uint8{0xdb, 06}},
+	{AFCOMIP, yfmvx, Px, [23]uint8{0xdf, 06}},
+	{AFCOML, yfmvx, Px, [23]uint8{0xda, 02}},
+	{AFCOMLP, yfmvx, Px, [23]uint8{0xda, 03}},
+	{AFCOMW, yfmvx, Px, [23]uint8{0xde, 02}},
+	{AFCOMWP, yfmvx, Px, [23]uint8{0xde, 03}},
+	{AFUCOM, ycompp, Px, [23]uint8{0xdd, 04}},
+	{AFUCOMI, ycompp, Px, [23]uint8{0xdb, 05}},
+	{AFUCOMIP, ycompp, Px, [23]uint8{0xdf, 05}},
+	{AFUCOMP, ycompp, Px, [23]uint8{0xdd, 05}},
+	{AFUCOMPP, ycompp, Px, [23]uint8{0xda, 13}},
+	{AFADDDP, ycompp, Px, [23]uint8{0xde, 00}},
+	{AFADDW, yfmvx, Px, [23]uint8{0xde, 00}},
+	{AFADDL, yfmvx, Px, [23]uint8{0xda, 00}},
+	{AFADDF, yfmvx, Px, [23]uint8{0xd8, 00}},
+	{AFADDD, yfadd, Px, [23]uint8{0xdc, 00, 0xd8, 00, 0xdc, 00}},
+	{AFMULDP, ycompp, Px, [23]uint8{0xde, 01}},
+	{AFMULW, yfmvx, Px, [23]uint8{0xde, 01}},
+	{AFMULL, yfmvx, Px, [23]uint8{0xda, 01}},
+	{AFMULF, yfmvx, Px, [23]uint8{0xd8, 01}},
+	{AFMULD, yfadd, Px, [23]uint8{0xdc, 01, 0xd8, 01, 0xdc, 01}},
+	{AFSUBDP, ycompp, Px, [23]uint8{0xde, 05}},
+	{AFSUBW, yfmvx, Px, [23]uint8{0xde, 04}},
+	{AFSUBL, yfmvx, Px, [23]uint8{0xda, 04}},
+	{AFSUBF, yfmvx, Px, [23]uint8{0xd8, 04}},
+	{AFSUBD, yfadd, Px, [23]uint8{0xdc, 04, 0xd8, 04, 0xdc, 05}},
+	{AFSUBRDP, ycompp, Px, [23]uint8{0xde, 04}},
+	{AFSUBRW, yfmvx, Px, [23]uint8{0xde, 05}},
+	{AFSUBRL, yfmvx, Px, [23]uint8{0xda, 05}},
+	{AFSUBRF, yfmvx, Px, [23]uint8{0xd8, 05}},
+	{AFSUBRD, yfadd, Px, [23]uint8{0xdc, 05, 0xd8, 05, 0xdc, 04}},
+	{AFDIVDP, ycompp, Px, [23]uint8{0xde, 07}},
+	{AFDIVW, yfmvx, Px, [23]uint8{0xde, 06}},
+	{AFDIVL, yfmvx, Px, [23]uint8{0xda, 06}},
+	{AFDIVF, yfmvx, Px, [23]uint8{0xd8, 06}},
+	{AFDIVD, yfadd, Px, [23]uint8{0xdc, 06, 0xd8, 06, 0xdc, 07}},
+	{AFDIVRDP, ycompp, Px, [23]uint8{0xde, 06}},
+	{AFDIVRW, yfmvx, Px, [23]uint8{0xde, 07}},
+	{AFDIVRL, yfmvx, Px, [23]uint8{0xda, 07}},
+	{AFDIVRF, yfmvx, Px, [23]uint8{0xd8, 07}},
+	{AFDIVRD, yfadd, Px, [23]uint8{0xdc, 07, 0xd8, 07, 0xdc, 06}},
+	{AFXCHD, yfxch, Px, [23]uint8{0xd9, 01, 0xd9, 01}},
+	{AFFREE, nil, 0, [23]uint8{}},
+	{AFLDCW, ysvrs, Px, [23]uint8{0xd9, 05, 0xd9, 05}},
+	{AFLDENV, ysvrs, Px, [23]uint8{0xd9, 04, 0xd9, 04}},
+	{AFRSTOR, ysvrs, Px, [23]uint8{0xdd, 04, 0xdd, 04}},
+	{AFSAVE, ysvrs, Px, [23]uint8{0xdd, 06, 0xdd, 06}},
+	{AFSTCW, ysvrs, Px, [23]uint8{0xd9, 07, 0xd9, 07}},
+	{AFSTENV, ysvrs, Px, [23]uint8{0xd9, 06, 0xd9, 06}},
+	{AFSTSW, ystsw, Px, [23]uint8{0xdd, 07, 0xdf, 0xe0}},
+	{AF2XM1, ynone, Px, [23]uint8{0xd9, 0xf0}},
+	{AFABS, ynone, Px, [23]uint8{0xd9, 0xe1}},
+	{AFCHS, ynone, Px, [23]uint8{0xd9, 0xe0}},
+	{AFCLEX, ynone, Px, [23]uint8{0xdb, 0xe2}},
+	{AFCOS, ynone, Px, [23]uint8{0xd9, 0xff}},
+	{AFDECSTP, ynone, Px, [23]uint8{0xd9, 0xf6}},
+	{AFINCSTP, ynone, Px, [23]uint8{0xd9, 0xf7}},
+	{AFINIT, ynone, Px, [23]uint8{0xdb, 0xe3}},
+	{AFLD1, ynone, Px, [23]uint8{0xd9, 0xe8}},
+	{AFLDL2E, ynone, Px, [23]uint8{0xd9, 0xea}},
+	{AFLDL2T, ynone, Px, [23]uint8{0xd9, 0xe9}},
+	{AFLDLG2, ynone, Px, [23]uint8{0xd9, 0xec}},
+	{AFLDLN2, ynone, Px, [23]uint8{0xd9, 0xed}},
+	{AFLDPI, ynone, Px, [23]uint8{0xd9, 0xeb}},
+	{AFLDZ, ynone, Px, [23]uint8{0xd9, 0xee}},
+	{AFNOP, ynone, Px, [23]uint8{0xd9, 0xd0}},
+	{AFPATAN, ynone, Px, [23]uint8{0xd9, 0xf3}},
+	{AFPREM, ynone, Px, [23]uint8{0xd9, 0xf8}},
+	{AFPREM1, ynone, Px, [23]uint8{0xd9, 0xf5}},
+	{AFPTAN, ynone, Px, [23]uint8{0xd9, 0xf2}},
+	{AFRNDINT, ynone, Px, [23]uint8{0xd9, 0xfc}},
+	{AFSCALE, ynone, Px, [23]uint8{0xd9, 0xfd}},
+	{AFSIN, ynone, Px, [23]uint8{0xd9, 0xfe}},
+	{AFSINCOS, ynone, Px, [23]uint8{0xd9, 0xfb}},
+	{AFSQRT, ynone, Px, [23]uint8{0xd9, 0xfa}},
+	{AFTST, ynone, Px, [23]uint8{0xd9, 0xe4}},
+	{AFXAM, ynone, Px, [23]uint8{0xd9, 0xe5}},
+	{AFXTRACT, ynone, Px, [23]uint8{0xd9, 0xf4}},
+	{AFYL2X, ynone, Px, [23]uint8{0xd9, 0xf1}},
+	{AFYL2XP1, ynone, Px, [23]uint8{0xd9, 0xf9}},
+	{ACMPXCHGB, yrb_mb, Pb, [23]uint8{0x0f, 0xb0}},
+	{ACMPXCHGL, yrl_ml, Px, [23]uint8{0x0f, 0xb1}},
+	{ACMPXCHGW, yrl_ml, Pe, [23]uint8{0x0f, 0xb1}},
+	{ACMPXCHGQ, yrl_ml, Pw, [23]uint8{0x0f, 0xb1}},
+	{ACMPXCHG8B, yscond, Pm, [23]uint8{0xc7, 01}},
+	{AINVD, ynone, Pm, [23]uint8{0x08}},
+	{AINVLPG, ydivb, Pm, [23]uint8{0x01, 07}},
+	{ALFENCE, ynone, Pm, [23]uint8{0xae, 0xe8}},
+	{AMFENCE, ynone, Pm, [23]uint8{0xae, 0xf0}},
+	{AMOVNTIL, yrl_ml, Pm, [23]uint8{0xc3}},
+	{AMOVNTIQ, yrl_ml, Pw, [23]uint8{0x0f, 0xc3}},
+	{ARDMSR, ynone, Pm, [23]uint8{0x32}},
+	{ARDPMC, ynone, Pm, [23]uint8{0x33}},
+	{ARDTSC, ynone, Pm, [23]uint8{0x31}},
+	{ARSM, ynone, Pm, [23]uint8{0xaa}},
+	{ASFENCE, ynone, Pm, [23]uint8{0xae, 0xf8}},
+	{ASYSRET, ynone, Pm, [23]uint8{0x07}},
+	{AWBINVD, ynone, Pm, [23]uint8{0x09}},
+	{AWRMSR, ynone, Pm, [23]uint8{0x30}},
+	{AXADDB, yrb_mb, Pb, [23]uint8{0x0f, 0xc0}},
+	{AXADDL, yrl_ml, Px, [23]uint8{0x0f, 0xc1}},
+	{AXADDQ, yrl_ml, Pw, [23]uint8{0x0f, 0xc1}},
+	{AXADDW, yrl_ml, Pe, [23]uint8{0x0f, 0xc1}},
+	{ACRC32B, ycrc32l, Px, [23]uint8{0xf2, 0x0f, 0x38, 0xf0, 0}},
+	{ACRC32Q, ycrc32l, Pw, [23]uint8{0xf2, 0x0f, 0x38, 0xf1, 0}},
+	{APREFETCHT0, yprefetch, Pm, [23]uint8{0x18, 01}},
+	{APREFETCHT1, yprefetch, Pm, [23]uint8{0x18, 02}},
+	{APREFETCHT2, yprefetch, Pm, [23]uint8{0x18, 03}},
+	{APREFETCHNTA, yprefetch, Pm, [23]uint8{0x18, 00}},
+	{AMOVQL, yrl_ml, Px, [23]uint8{0x89}},
+	{obj.AUNDEF, ynone, Px, [23]uint8{0x0f, 0x0b}},
+	{AAESENC, yaes, Pq, [23]uint8{0x38, 0xdc, 0}},
+	{AAESENCLAST, yaes, Pq, [23]uint8{0x38, 0xdd, 0}},
+	{AAESDEC, yaes, Pq, [23]uint8{0x38, 0xde, 0}},
+	{AAESDECLAST, yaes, Pq, [23]uint8{0x38, 0xdf, 0}},
+	{AAESIMC, yaes, Pq, [23]uint8{0x38, 0xdb, 0}},
+	{AAESKEYGENASSIST, yxshuf, Pq, [23]uint8{0x3a, 0xdf, 0}},
+	{AROUNDPD, yxshuf, Pq, [23]uint8{0x3a, 0x09, 0}},
+	{AROUNDPS, yxshuf, Pq, [23]uint8{0x3a, 0x08, 0}},
+	{AROUNDSD, yxshuf, Pq, [23]uint8{0x3a, 0x0b, 0}},
+	{AROUNDSS, yxshuf, Pq, [23]uint8{0x3a, 0x0a, 0}},
+	{APSHUFD, yxshuf, Pq, [23]uint8{0x70, 0}},
+	{APCLMULQDQ, yxshuf, Pq, [23]uint8{0x3a, 0x44, 0}},
+	{APCMPESTRI, yxshuf, Pq, [23]uint8{0x3a, 0x61, 0}},
+	{AMOVDDUP, yxm, Pf2, [23]uint8{0x12}},
+	{AMOVSHDUP, yxm, Pf3, [23]uint8{0x16}},
+	{AMOVSLDUP, yxm, Pf3, [23]uint8{0x12}},
+
+	{AANDNL, yvex_r3, Pvex, [23]uint8{VEX_LZ_0F38_W0, 0xF2}},
+	{AANDNQ, yvex_r3, Pvex, [23]uint8{VEX_LZ_0F38_W1, 0xF2}},
+	{ABEXTRL, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_0F38_W0, 0xF7}},
+	{ABEXTRQ, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_0F38_W1, 0xF7}},
+	{ABZHIL, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_0F38_W0, 0xF5}},
+	{ABZHIQ, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_0F38_W1, 0xF5}},
+	{AMULXL, yvex_r3, Pvex, [23]uint8{VEX_LZ_F2_0F38_W0, 0xF6}},
+	{AMULXQ, yvex_r3, Pvex, [23]uint8{VEX_LZ_F2_0F38_W1, 0xF6}},
+	{APDEPL, yvex_r3, Pvex, [23]uint8{VEX_LZ_F2_0F38_W0, 0xF5}},
+	{APDEPQ, yvex_r3, Pvex, [23]uint8{VEX_LZ_F2_0F38_W1, 0xF5}},
+	{APEXTL, yvex_r3, Pvex, [23]uint8{VEX_LZ_F3_0F38_W0, 0xF5}},
+	{APEXTQ, yvex_r3, Pvex, [23]uint8{VEX_LZ_F3_0F38_W1, 0xF5}},
+	{ASARXL, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_F3_0F38_W0, 0xF7}},
+	{ASARXQ, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_F3_0F38_W1, 0xF7}},
+	{ASHLXL, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_66_0F38_W0, 0xF7}},
+	{ASHLXQ, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_66_0F38_W1, 0xF7}},
+	{ASHRXL, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_F2_0F38_W0, 0xF7}},
+	{ASHRXQ, yvex_vmr3, Pvex, [23]uint8{VEX_LZ_F2_0F38_W1, 0xF7}},
+
+	{AVZEROUPPER, ynone, Px, [23]uint8{0xc5, 0xf8, 0x77}},
+	{AVMOVDQU, yvex_vmovdqa, Pvex, [23]uint8{VEX_128_F3_0F_WIG, 0x6F, VEX_128_F3_0F_WIG, 0x7F, VEX_256_F3_0F_WIG, 0x6F, VEX_256_F3_0F_WIG, 0x7F}},
+	{AVMOVDQA, yvex_vmovdqa, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x6F, VEX_128_66_0F_WIG, 0x7F, VEX_256_66_0F_WIG, 0x6F, VEX_256_66_0F_WIG, 0x7F}},
+	{AVMOVNTDQ, yvex_vmovntdq, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xE7, VEX_256_66_0F_WIG, 0xE7}},
+	{AVPCMPEQB, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x74, VEX_256_66_0F_WIG, 0x74}},
+	{AVPXOR, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xEF, VEX_256_66_0F_WIG, 0xEF}},
+	{AVPMOVMSKB, yvex_xyr2, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xD7, VEX_256_66_0F_WIG, 0xD7}},
+	{AVPAND, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xDB, VEX_256_66_0F_WIG, 0xDB}},
+	{AVPBROADCASTB, yvex_vpbroadcast, Pvex, [23]uint8{VEX_128_66_0F38_W0, 0x78, VEX_256_66_0F38_W0, 0x78}},
+	{AVPTEST, yvex_xy2, Pvex, [23]uint8{VEX_128_66_0F38_WIG, 0x17, VEX_256_66_0F38_WIG, 0x17}},
+	{AVPSHUFB, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F38_WIG, 0x00, VEX_256_66_0F38_WIG, 0x00}},
+	{AVPSHUFD, yvex_xyi3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x70, VEX_256_66_0F_WIG, 0x70, VEX_128_66_0F_WIG, 0x70, VEX_256_66_0F_WIG, 0x70}},
+	{AVPOR, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xeb, VEX_256_66_0F_WIG, 0xeb}},
+	{AVPADDQ, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xd4, VEX_256_66_0F_WIG, 0xd4}},
+	{AVPADDD, yvex_xy3, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0xfe, VEX_256_66_0F_WIG, 0xfe}},
+	{AVPSLLD, yvex_shift, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x72, 0xf0, VEX_256_66_0F_WIG, 0x72, 0xf0, VEX_128_66_0F_WIG, 0xf2, VEX_256_66_0F_WIG, 0xf2}},
+	{AVPSLLQ, yvex_shift, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x73, 0xf0, VEX_256_66_0F_WIG, 0x73, 0xf0, VEX_128_66_0F_WIG, 0xf3, VEX_256_66_0F_WIG, 0xf3}},
+	{AVPSRLD, yvex_shift, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x72, 0xd0, VEX_256_66_0F_WIG, 0x72, 0xd0, VEX_128_66_0F_WIG, 0xd2, VEX_256_66_0F_WIG, 0xd2}},
+	{AVPSRLQ, yvex_shift, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x73, 0xd0, VEX_256_66_0F_WIG, 0x73, 0xd0, VEX_128_66_0F_WIG, 0xd3, VEX_256_66_0F_WIG, 0xd3}},
+	{AVPSRLDQ, yvex_shift_dq, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x73, 0xd8, VEX_256_66_0F_WIG, 0x73, 0xd8}},
+	{AVPSLLDQ, yvex_shift_dq, Pvex, [23]uint8{VEX_128_66_0F_WIG, 0x73, 0xf8, VEX_256_66_0F_WIG, 0x73, 0xf8}},
+	{AVPERM2F128, yvex_yyi4, Pvex, [23]uint8{VEX_256_66_0F3A_W0, 0x06}},
+	{AVPALIGNR, yvex_yyi4, Pvex, [23]uint8{VEX_256_66_0F3A_WIG, 0x0f}},
+	{AVPBLENDD, yvex_yyi4, Pvex, [23]uint8{VEX_256_66_0F3A_WIG, 0x02}},
+	{AVINSERTI128, yvex_xyi4, Pvex, [23]uint8{VEX_256_66_0F3A_WIG, 0x38}},
+	{AVPERM2I128, yvex_yyi4, Pvex, [23]uint8{VEX_256_66_0F3A_WIG, 0x46}},
+	{ARORXL, yvex_ri3, Pvex, [23]uint8{VEX_LZ_F2_0F3A_W0, 0xf0}},
+	{ARORXQ, yvex_ri3, Pvex, [23]uint8{VEX_LZ_F2_0F3A_W1, 0xf0}},
+	{AVBROADCASTSD, yvex_vpbroadcast_sd, Pvex, [23]uint8{VEX_256_66_0F38_W0, 0x19}},
+	{AVBROADCASTSS, yvex_vpbroadcast, Pvex, [23]uint8{VEX_128_66_0F38_W0, 0x18, VEX_256_66_0F38_W0, 0x18}},
+	{AVMOVDDUP, yvex_xy2, Pvex, [23]uint8{VEX_128_F2_0F_WIG, 0x12, VEX_256_F2_0F_WIG, 0x12}},
+	{AVMOVSHDUP, yvex_xy2, Pvex, [23]uint8{VEX_128_F3_0F_WIG, 0x16, VEX_256_F3_0F_WIG, 0x16}},
+	{AVMOVSLDUP, yvex_xy2, Pvex, [23]uint8{VEX_128_F3_0F_WIG, 0x12, VEX_256_F3_0F_WIG, 0x12}},
+
+	{AXACQUIRE, ynone, Px, [23]uint8{0xf2}},
+	{AXRELEASE, ynone, Px, [23]uint8{0xf3}},
+	{AXBEGIN, yxbegin, Px, [23]uint8{0xc7, 0xf8}},
+	{AXABORT, yxabort, Px, [23]uint8{0xc6, 0xf8}},
+	{AXEND, ynone, Px, [23]uint8{0x0f, 01, 0xd5}},
+	{AXTEST, ynone, Px, [23]uint8{0x0f, 01, 0xd6}},
+	{AXGETBV, ynone, Pm, [23]uint8{01, 0xd0}},
+	{obj.AUSEFIELD, ynop, Px, [23]uint8{0, 0}},
+	{obj.ATYPE, nil, 0, [23]uint8{}},
+	{obj.AFUNCDATA, yfuncdata, Px, [23]uint8{0, 0}},
+	{obj.APCDATA, ypcdata, Px, [23]uint8{0, 0}},
+	{obj.AVARDEF, nil, 0, [23]uint8{}},
+	{obj.AVARKILL, nil, 0, [23]uint8{}},
+	{obj.ADUFFCOPY, yduff, Px, [23]uint8{0xe8}},
+	{obj.ADUFFZERO, yduff, Px, [23]uint8{0xe8}},
+	{obj.AEND, nil, 0, [23]uint8{}},
+	{0, nil, 0, [23]uint8{}},
+}
+
+var opindex [(ALAST + 1) & obj.AMask]*Optab
+
+// isextern reports whether s describes an external symbol that must avoid pc-relative addressing.
+// This happens on systems like Solaris that call .so functions instead of system calls.
+// It does not seem to be necessary for any other systems. This is probably working
+// around a Solaris-specific bug that should be fixed differently, but we don't know
+// what that bug is. And this does fix it.
+func isextern(s *obj.LSym) bool {
+	// All the Solaris dynamic imports from libc.so begin with "libc_".
+	return strings.HasPrefix(s.Name, "libc_")
+}
+
+// single-instruction no-ops of various lengths.
+// constructed by hand and disassembled with gdb to verify.
+// see http://www.agner.org/optimize/optimizing_assembly.pdf for discussion.
+var nop = [][16]uint8{
+	{0x90},
+	{0x66, 0x90},
+	{0x0F, 0x1F, 0x00},
+	{0x0F, 0x1F, 0x40, 0x00},
+	{0x0F, 0x1F, 0x44, 0x00, 0x00},
+	{0x66, 0x0F, 0x1F, 0x44, 0x00, 0x00},
+	{0x0F, 0x1F, 0x80, 0x00, 0x00, 0x00, 0x00},
+	{0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00},
+	{0x66, 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00},
+}
+
+// Native Client rejects the repeated 0x66 prefix.
+// {0x66, 0x66, 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00},
+func fillnop(p []byte, n int) {
+	var m int
+
+	for n > 0 {
+		m = n
+		if m > len(nop) {
+			m = len(nop)
+		}
+		copy(p[:m], nop[m-1][:m])
+		p = p[m:]
+		n -= m
+	}
+}
+
+func naclpad(ctxt *obj.Link, s *obj.LSym, c int32, pad int32) int32 {
+	s.Grow(int64(c) + int64(pad))
+	fillnop(s.P[c:], int(pad))
+	return c + pad
+}
+
+func spadjop(ctxt *obj.Link, p *obj.Prog, l, q obj.As) obj.As {
+	if p.Mode != 64 || ctxt.Arch.PtrSize == 4 {
+		return l
+	}
+	return q
+}
+
+func span6(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	if s.P != nil {
+		return
+	}
+
+	if ycover[0] == 0 {
+		instinit()
+	}
+
+	for p := ctxt.Cursym.Text; p != nil; p = p.Link {
+		if p.To.Type == obj.TYPE_BRANCH {
+			if p.Pcond == nil {
+				p.Pcond = p
+			}
+		}
+		if p.As == AADJSP {
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_SP
+			v := int32(-p.From.Offset)
+			p.From.Offset = int64(v)
+			p.As = spadjop(ctxt, p, AADDL, AADDQ)
+			if v < 0 {
+				p.As = spadjop(ctxt, p, ASUBL, ASUBQ)
+				v = -v
+				p.From.Offset = int64(v)
+			}
+
+			if v == 0 {
+				p.As = obj.ANOP
+			}
+		}
+	}
+
+	var q *obj.Prog
+	var count int64 // rough count of number of instructions
+	for p := s.Text; p != nil; p = p.Link {
+		count++
+		p.Back = 2 // use short branches first time through
+		q = p.Pcond
+		if q != nil && (q.Back&2 != 0) {
+			p.Back |= 1 // backward jump
+			q.Back |= 4 // loop head
+		}
+
+		if p.As == AADJSP {
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_SP
+			v := int32(-p.From.Offset)
+			p.From.Offset = int64(v)
+			p.As = spadjop(ctxt, p, AADDL, AADDQ)
+			if v < 0 {
+				p.As = spadjop(ctxt, p, ASUBL, ASUBQ)
+				v = -v
+				p.From.Offset = int64(v)
+			}
+
+			if v == 0 {
+				p.As = obj.ANOP
+			}
+		}
+	}
+	s.GrowCap(count * 5) // preallocate roughly 5 bytes per instruction
+
+	n := 0
+	var c int32
+	errors := ctxt.Errors
+	var deferreturn *obj.LSym
+	if ctxt.Headtype == obj.Hnacl {
+		deferreturn = obj.Linklookup(ctxt, "runtime.deferreturn", 0)
+	}
+	for {
+		loop := int32(0)
+		for i := range s.R {
+			s.R[i] = obj.Reloc{}
+		}
+		s.R = s.R[:0]
+		s.P = s.P[:0]
+		c = 0
+		for p := s.Text; p != nil; p = p.Link {
+			if ctxt.Headtype == obj.Hnacl && p.Isize > 0 {
+
+				// pad everything to avoid crossing 32-byte boundary
+				if c>>5 != (c+int32(p.Isize)-1)>>5 {
+					c = naclpad(ctxt, s, c, -c&31)
+				}
+
+				// pad call deferreturn to start at 32-byte boundary
+				// so that subtracting 5 in jmpdefer will jump back
+				// to that boundary and rerun the call.
+				if p.As == obj.ACALL && p.To.Sym == deferreturn {
+					c = naclpad(ctxt, s, c, -c&31)
+				}
+
+				// pad call to end at 32-byte boundary
+				if p.As == obj.ACALL {
+					c = naclpad(ctxt, s, c, -(c+int32(p.Isize))&31)
+				}
+
+				// the linker treats REP and STOSQ as different instructions
+				// but in fact the REP is a prefix on the STOSQ.
+				// make sure REP has room for 2 more bytes, so that
+				// padding will not be inserted before the next instruction.
+				if (p.As == AREP || p.As == AREPN) && c>>5 != (c+3-1)>>5 {
+					c = naclpad(ctxt, s, c, -c&31)
+				}
+
+				// same for LOCK.
+				// various instructions follow; the longest is 4 bytes.
+				// give ourselves 8 bytes so as to avoid surprises.
+				if p.As == ALOCK && c>>5 != (c+8-1)>>5 {
+					c = naclpad(ctxt, s, c, -c&31)
+				}
+			}
+
+			if (p.Back&4 != 0) && c&(LoopAlign-1) != 0 {
+				// pad with NOPs
+				v := -c & (LoopAlign - 1)
+
+				if v <= MaxLoopPad {
+					s.Grow(int64(c) + int64(v))
+					fillnop(s.P[c:], int(v))
+					c += v
+				}
+			}
+
+			p.Pc = int64(c)
+
+			// process forward jumps to p
+			for q = p.Rel; q != nil; q = q.Forwd {
+				v := int32(p.Pc - (q.Pc + int64(q.Isize)))
+				if q.Back&2 != 0 { // short
+					if v > 127 {
+						loop++
+						q.Back ^= 2
+					}
+
+					if q.As == AJCXZL || q.As == AXBEGIN {
+						s.P[q.Pc+2] = byte(v)
+					} else {
+						s.P[q.Pc+1] = byte(v)
+					}
+				} else {
+					binary.LittleEndian.PutUint32(s.P[q.Pc+int64(q.Isize)-4:], uint32(v))
+				}
+			}
+
+			p.Rel = nil
+
+			p.Pc = int64(c)
+			asmins(ctxt, p)
+			m := ctxt.AsmBuf.Len()
+			if int(p.Isize) != m {
+				p.Isize = uint8(m)
+				loop++
+			}
+
+			s.Grow(p.Pc + int64(m))
+			copy(s.P[p.Pc:], ctxt.AsmBuf.Bytes())
+			c += int32(m)
+		}
+
+		n++
+		if n > 20 {
+			ctxt.Diag("span must be looping")
+			log.Fatalf("loop")
+		}
+		if loop == 0 {
+			break
+		}
+		if ctxt.Errors > errors {
+			return
+		}
+	}
+
+	if ctxt.Headtype == obj.Hnacl {
+		c = naclpad(ctxt, s, c, -c&31)
+	}
+
+	s.Size = int64(c)
+
+	if false { /* debug['a'] > 1 */
+		fmt.Printf("span1 %s %d (%d tries)\n %.6x", s.Name, s.Size, n, 0)
+		var i int
+		for i = 0; i < len(s.P); i++ {
+			fmt.Printf(" %.2x", s.P[i])
+			if i%16 == 15 {
+				fmt.Printf("\n  %.6x", uint(i+1))
+			}
+		}
+
+		if i%16 != 0 {
+			fmt.Printf("\n")
+		}
+
+		for i := 0; i < len(s.R); i++ {
+			r := &s.R[i]
+			fmt.Printf(" rel %#.4x/%d %s%+d\n", uint32(r.Off), r.Siz, r.Sym.Name, r.Add)
+		}
+	}
+}
+
+func instinit() {
+	for i := 1; optab[i].as != 0; i++ {
+		c := optab[i].as
+		if opindex[c&obj.AMask] != nil {
+			log.Fatalf("phase error in optab: %d (%v)", i, c)
+		}
+		opindex[c&obj.AMask] = &optab[i]
+	}
+
+	for i := 0; i < Ymax; i++ {
+		ycover[i*Ymax+i] = 1
+	}
+
+	ycover[Yi0*Ymax+Yi8] = 1
+	ycover[Yi1*Ymax+Yi8] = 1
+	ycover[Yu7*Ymax+Yi8] = 1
+
+	ycover[Yi0*Ymax+Yu7] = 1
+	ycover[Yi1*Ymax+Yu7] = 1
+
+	ycover[Yi0*Ymax+Yu8] = 1
+	ycover[Yi1*Ymax+Yu8] = 1
+	ycover[Yu7*Ymax+Yu8] = 1
+
+	ycover[Yi0*Ymax+Ys32] = 1
+	ycover[Yi1*Ymax+Ys32] = 1
+	ycover[Yu7*Ymax+Ys32] = 1
+	ycover[Yu8*Ymax+Ys32] = 1
+	ycover[Yi8*Ymax+Ys32] = 1
+
+	ycover[Yi0*Ymax+Yi32] = 1
+	ycover[Yi1*Ymax+Yi32] = 1
+	ycover[Yu7*Ymax+Yi32] = 1
+	ycover[Yu8*Ymax+Yi32] = 1
+	ycover[Yi8*Ymax+Yi32] = 1
+	ycover[Ys32*Ymax+Yi32] = 1
+
+	ycover[Yi0*Ymax+Yi64] = 1
+	ycover[Yi1*Ymax+Yi64] = 1
+	ycover[Yu7*Ymax+Yi64] = 1
+	ycover[Yu8*Ymax+Yi64] = 1
+	ycover[Yi8*Ymax+Yi64] = 1
+	ycover[Ys32*Ymax+Yi64] = 1
+	ycover[Yi32*Ymax+Yi64] = 1
+
+	ycover[Yal*Ymax+Yrb] = 1
+	ycover[Ycl*Ymax+Yrb] = 1
+	ycover[Yax*Ymax+Yrb] = 1
+	ycover[Ycx*Ymax+Yrb] = 1
+	ycover[Yrx*Ymax+Yrb] = 1
+	ycover[Yrl*Ymax+Yrb] = 1 // but not Yrl32
+
+	ycover[Ycl*Ymax+Ycx] = 1
+
+	ycover[Yax*Ymax+Yrx] = 1
+	ycover[Ycx*Ymax+Yrx] = 1
+
+	ycover[Yax*Ymax+Yrl] = 1
+	ycover[Ycx*Ymax+Yrl] = 1
+	ycover[Yrx*Ymax+Yrl] = 1
+	ycover[Yrl32*Ymax+Yrl] = 1
+
+	ycover[Yf0*Ymax+Yrf] = 1
+
+	ycover[Yal*Ymax+Ymb] = 1
+	ycover[Ycl*Ymax+Ymb] = 1
+	ycover[Yax*Ymax+Ymb] = 1
+	ycover[Ycx*Ymax+Ymb] = 1
+	ycover[Yrx*Ymax+Ymb] = 1
+	ycover[Yrb*Ymax+Ymb] = 1
+	ycover[Yrl*Ymax+Ymb] = 1 // but not Yrl32
+	ycover[Ym*Ymax+Ymb] = 1
+
+	ycover[Yax*Ymax+Yml] = 1
+	ycover[Ycx*Ymax+Yml] = 1
+	ycover[Yrx*Ymax+Yml] = 1
+	ycover[Yrl*Ymax+Yml] = 1
+	ycover[Yrl32*Ymax+Yml] = 1
+	ycover[Ym*Ymax+Yml] = 1
+
+	ycover[Yax*Ymax+Ymm] = 1
+	ycover[Ycx*Ymax+Ymm] = 1
+	ycover[Yrx*Ymax+Ymm] = 1
+	ycover[Yrl*Ymax+Ymm] = 1
+	ycover[Yrl32*Ymax+Ymm] = 1
+	ycover[Ym*Ymax+Ymm] = 1
+	ycover[Ymr*Ymax+Ymm] = 1
+
+	ycover[Ym*Ymax+Yxm] = 1
+	ycover[Yxr*Ymax+Yxm] = 1
+
+	ycover[Ym*Ymax+Yym] = 1
+	ycover[Yyr*Ymax+Yym] = 1
+
+	for i := 0; i < MAXREG; i++ {
+		reg[i] = -1
+		if i >= REG_AL && i <= REG_R15B {
+			reg[i] = (i - REG_AL) & 7
+			if i >= REG_SPB && i <= REG_DIB {
+				regrex[i] = 0x40
+			}
+			if i >= REG_R8B && i <= REG_R15B {
+				regrex[i] = Rxr | Rxx | Rxb
+			}
+		}
+
+		if i >= REG_AH && i <= REG_BH {
+			reg[i] = 4 + ((i - REG_AH) & 7)
+		}
+		if i >= REG_AX && i <= REG_R15 {
+			reg[i] = (i - REG_AX) & 7
+			if i >= REG_R8 {
+				regrex[i] = Rxr | Rxx | Rxb
+			}
+		}
+
+		if i >= REG_F0 && i <= REG_F0+7 {
+			reg[i] = (i - REG_F0) & 7
+		}
+		if i >= REG_M0 && i <= REG_M0+7 {
+			reg[i] = (i - REG_M0) & 7
+		}
+		if i >= REG_X0 && i <= REG_X0+15 {
+			reg[i] = (i - REG_X0) & 7
+			if i >= REG_X0+8 {
+				regrex[i] = Rxr | Rxx | Rxb
+			}
+		}
+		if i >= REG_Y0 && i <= REG_Y0+15 {
+			reg[i] = (i - REG_Y0) & 7
+			if i >= REG_Y0+8 {
+				regrex[i] = Rxr | Rxx | Rxb
+			}
+		}
+
+		if i >= REG_CR+8 && i <= REG_CR+15 {
+			regrex[i] = Rxr
+		}
+	}
+}
+
+var isAndroid = (obj.GOOS == "android")
+
+func prefixof(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) int {
+	if a.Reg < REG_CS && a.Index < REG_CS { // fast path
+		return 0
+	}
+	if a.Type == obj.TYPE_MEM && a.Name == obj.NAME_NONE {
+		switch a.Reg {
+		case REG_CS:
+			return 0x2e
+
+		case REG_DS:
+			return 0x3e
+
+		case REG_ES:
+			return 0x26
+
+		case REG_FS:
+			return 0x64
+
+		case REG_GS:
+			return 0x65
+
+		case REG_TLS:
+			// NOTE: Systems listed here should be only systems that
+			// support direct TLS references like 8(TLS) implemented as
+			// direct references from FS or GS. Systems that require
+			// the initial-exec model, where you load the TLS base into
+			// a register and then index from that register, do not reach
+			// this code and should not be listed.
+			if p.Mode == 32 {
+				switch ctxt.Headtype {
+				default:
+					if isAndroid {
+						return 0x65 // GS
+					}
+					log.Fatalf("unknown TLS base register for %v", ctxt.Headtype)
+
+				case obj.Hdarwin,
+					obj.Hdragonfly,
+					obj.Hfreebsd,
+					obj.Hnetbsd,
+					obj.Hopenbsd:
+					return 0x65 // GS
+				}
+			}
+
+			switch ctxt.Headtype {
+			default:
+				log.Fatalf("unknown TLS base register for %v", ctxt.Headtype)
+
+			case obj.Hlinux:
+				if isAndroid {
+					return 0x64 // FS
+				}
+
+				if ctxt.Flag_shared {
+					log.Fatalf("unknown TLS base register for linux with -shared")
+				} else {
+					return 0x64 // FS
+				}
+
+			case obj.Hdragonfly,
+				obj.Hfreebsd,
+				obj.Hnetbsd,
+				obj.Hopenbsd,
+				obj.Hsolaris:
+				return 0x64 // FS
+
+			case obj.Hdarwin:
+				return 0x65 // GS
+			}
+		}
+	}
+
+	if p.Mode == 32 {
+		if a.Index == REG_TLS && ctxt.Flag_shared {
+			// When building for inclusion into a shared library, an instruction of the form
+			//     MOVL 0(CX)(TLS*1), AX
+			// becomes
+			//     mov %gs:(%ecx), %eax
+			// which assumes that the correct TLS offset has been loaded into %ecx (today
+			// there is only one TLS variable -- g -- so this is OK). When not building for
+			// a shared library the instruction it becomes
+			//     mov 0x0(%ecx), $eax
+			// and a R_TLS_LE relocation, and so does not require a prefix.
+			if a.Offset != 0 {
+				ctxt.Diag("cannot handle non-0 offsets to TLS")
+			}
+			return 0x65 // GS
+		}
+		return 0
+	}
+
+	switch a.Index {
+	case REG_CS:
+		return 0x2e
+
+	case REG_DS:
+		return 0x3e
+
+	case REG_ES:
+		return 0x26
+
+	case REG_TLS:
+		if ctxt.Flag_shared {
+			// When building for inclusion into a shared library, an instruction of the form
+			//     MOV 0(CX)(TLS*1), AX
+			// becomes
+			//     mov %fs:(%rcx), %rax
+			// which assumes that the correct TLS offset has been loaded into %rcx (today
+			// there is only one TLS variable -- g -- so this is OK). When not building for
+			// a shared library the instruction does not require a prefix.
+			if a.Offset != 0 {
+				log.Fatalf("cannot handle non-0 offsets to TLS")
+			}
+			return 0x64
+		}
+
+	case REG_FS:
+		return 0x64
+
+	case REG_GS:
+		return 0x65
+	}
+
+	return 0
+}
+
+func oclass(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) int {
+	switch a.Type {
+	case obj.TYPE_NONE:
+		return Ynone
+
+	case obj.TYPE_BRANCH:
+		return Ybr
+
+	case obj.TYPE_INDIR:
+		if a.Name != obj.NAME_NONE && a.Reg == REG_NONE && a.Index == REG_NONE && a.Scale == 0 {
+			return Yindir
+		}
+		return Yxxx
+
+	case obj.TYPE_MEM:
+		if a.Index == REG_SP {
+			// Can't use SP as the index register
+			return Yxxx
+		}
+		if ctxt.Asmode == 64 {
+			switch a.Name {
+			case obj.NAME_EXTERN, obj.NAME_STATIC, obj.NAME_GOTREF:
+				// Global variables can't use index registers and their
+				// base register is %rip (%rip is encoded as REG_NONE).
+				if a.Reg != REG_NONE || a.Index != REG_NONE || a.Scale != 0 {
+					return Yxxx
+				}
+			case obj.NAME_AUTO, obj.NAME_PARAM:
+				// These names must have a base of SP.  The old compiler
+				// uses 0 for the base register. SSA uses REG_SP.
+				if a.Reg != REG_SP && a.Reg != 0 {
+					return Yxxx
+				}
+			case obj.NAME_NONE:
+				// everything is ok
+			default:
+				// unknown name
+				return Yxxx
+			}
+		}
+		return Ym
+
+	case obj.TYPE_ADDR:
+		switch a.Name {
+		case obj.NAME_GOTREF:
+			ctxt.Diag("unexpected TYPE_ADDR with NAME_GOTREF")
+			return Yxxx
+
+		case obj.NAME_EXTERN,
+			obj.NAME_STATIC:
+			if a.Sym != nil && isextern(a.Sym) || (p.Mode == 32 && !ctxt.Flag_shared) {
+				return Yi32
+			}
+			return Yiauto // use pc-relative addressing
+
+		case obj.NAME_AUTO,
+			obj.NAME_PARAM:
+			return Yiauto
+		}
+
+		// TODO(rsc): DUFFZERO/DUFFCOPY encoding forgot to set a->index
+		// and got Yi32 in an earlier version of this code.
+		// Keep doing that until we fix yduff etc.
+		if a.Sym != nil && strings.HasPrefix(a.Sym.Name, "runtime.duff") {
+			return Yi32
+		}
+
+		if a.Sym != nil || a.Name != obj.NAME_NONE {
+			ctxt.Diag("unexpected addr: %v", obj.Dconv(p, a))
+		}
+		fallthrough
+
+		// fall through
+
+	case obj.TYPE_CONST:
+		if a.Sym != nil {
+			ctxt.Diag("TYPE_CONST with symbol: %v", obj.Dconv(p, a))
+		}
+
+		v := a.Offset
+		if p.Mode == 32 {
+			v = int64(int32(v))
+		}
+		if v == 0 {
+			if p.Mark&PRESERVEFLAGS != 0 {
+				// If PRESERVEFLAGS is set, avoid MOV $0, AX turning into XOR AX, AX.
+				return Yu7
+			}
+			return Yi0
+		}
+		if v == 1 {
+			return Yi1
+		}
+		if v >= 0 && v <= 127 {
+			return Yu7
+		}
+		if v >= 0 && v <= 255 {
+			return Yu8
+		}
+		if v >= -128 && v <= 127 {
+			return Yi8
+		}
+		if p.Mode == 32 {
+			return Yi32
+		}
+		l := int32(v)
+		if int64(l) == v {
+			return Ys32 /* can sign extend */
+		}
+		if v>>32 == 0 {
+			return Yi32 /* unsigned */
+		}
+		return Yi64
+
+	case obj.TYPE_TEXTSIZE:
+		return Ytextsize
+	}
+
+	if a.Type != obj.TYPE_REG {
+		ctxt.Diag("unexpected addr1: type=%d %v", a.Type, obj.Dconv(p, a))
+		return Yxxx
+	}
+
+	switch a.Reg {
+	case REG_AL:
+		return Yal
+
+	case REG_AX:
+		return Yax
+
+		/*
+			case REG_SPB:
+		*/
+	case REG_BPB,
+		REG_SIB,
+		REG_DIB,
+		REG_R8B,
+		REG_R9B,
+		REG_R10B,
+		REG_R11B,
+		REG_R12B,
+		REG_R13B,
+		REG_R14B,
+		REG_R15B:
+		if ctxt.Asmode != 64 {
+			return Yxxx
+		}
+		fallthrough
+
+	case REG_DL,
+		REG_BL,
+		REG_AH,
+		REG_CH,
+		REG_DH,
+		REG_BH:
+		return Yrb
+
+	case REG_CL:
+		return Ycl
+
+	case REG_CX:
+		return Ycx
+
+	case REG_DX, REG_BX:
+		return Yrx
+
+	case REG_R8, /* not really Yrl */
+		REG_R9,
+		REG_R10,
+		REG_R11,
+		REG_R12,
+		REG_R13,
+		REG_R14,
+		REG_R15:
+		if ctxt.Asmode != 64 {
+			return Yxxx
+		}
+		fallthrough
+
+	case REG_SP, REG_BP, REG_SI, REG_DI:
+		if p.Mode == 32 {
+			return Yrl32
+		}
+		return Yrl
+
+	case REG_F0 + 0:
+		return Yf0
+
+	case REG_F0 + 1,
+		REG_F0 + 2,
+		REG_F0 + 3,
+		REG_F0 + 4,
+		REG_F0 + 5,
+		REG_F0 + 6,
+		REG_F0 + 7:
+		return Yrf
+
+	case REG_M0 + 0,
+		REG_M0 + 1,
+		REG_M0 + 2,
+		REG_M0 + 3,
+		REG_M0 + 4,
+		REG_M0 + 5,
+		REG_M0 + 6,
+		REG_M0 + 7:
+		return Ymr
+
+	case REG_X0 + 0,
+		REG_X0 + 1,
+		REG_X0 + 2,
+		REG_X0 + 3,
+		REG_X0 + 4,
+		REG_X0 + 5,
+		REG_X0 + 6,
+		REG_X0 + 7,
+		REG_X0 + 8,
+		REG_X0 + 9,
+		REG_X0 + 10,
+		REG_X0 + 11,
+		REG_X0 + 12,
+		REG_X0 + 13,
+		REG_X0 + 14,
+		REG_X0 + 15:
+		return Yxr
+
+	case REG_Y0 + 0,
+		REG_Y0 + 1,
+		REG_Y0 + 2,
+		REG_Y0 + 3,
+		REG_Y0 + 4,
+		REG_Y0 + 5,
+		REG_Y0 + 6,
+		REG_Y0 + 7,
+		REG_Y0 + 8,
+		REG_Y0 + 9,
+		REG_Y0 + 10,
+		REG_Y0 + 11,
+		REG_Y0 + 12,
+		REG_Y0 + 13,
+		REG_Y0 + 14,
+		REG_Y0 + 15:
+		return Yyr
+
+	case REG_CS:
+		return Ycs
+	case REG_SS:
+		return Yss
+	case REG_DS:
+		return Yds
+	case REG_ES:
+		return Yes
+	case REG_FS:
+		return Yfs
+	case REG_GS:
+		return Ygs
+	case REG_TLS:
+		return Ytls
+
+	case REG_GDTR:
+		return Ygdtr
+	case REG_IDTR:
+		return Yidtr
+	case REG_LDTR:
+		return Yldtr
+	case REG_MSW:
+		return Ymsw
+	case REG_TASK:
+		return Ytask
+
+	case REG_CR + 0:
+		return Ycr0
+	case REG_CR + 1:
+		return Ycr1
+	case REG_CR + 2:
+		return Ycr2
+	case REG_CR + 3:
+		return Ycr3
+	case REG_CR + 4:
+		return Ycr4
+	case REG_CR + 5:
+		return Ycr5
+	case REG_CR + 6:
+		return Ycr6
+	case REG_CR + 7:
+		return Ycr7
+	case REG_CR + 8:
+		return Ycr8
+
+	case REG_DR + 0:
+		return Ydr0
+	case REG_DR + 1:
+		return Ydr1
+	case REG_DR + 2:
+		return Ydr2
+	case REG_DR + 3:
+		return Ydr3
+	case REG_DR + 4:
+		return Ydr4
+	case REG_DR + 5:
+		return Ydr5
+	case REG_DR + 6:
+		return Ydr6
+	case REG_DR + 7:
+		return Ydr7
+
+	case REG_TR + 0:
+		return Ytr0
+	case REG_TR + 1:
+		return Ytr1
+	case REG_TR + 2:
+		return Ytr2
+	case REG_TR + 3:
+		return Ytr3
+	case REG_TR + 4:
+		return Ytr4
+	case REG_TR + 5:
+		return Ytr5
+	case REG_TR + 6:
+		return Ytr6
+	case REG_TR + 7:
+		return Ytr7
+	}
+
+	return Yxxx
+}
+
+func asmidx(ctxt *obj.Link, scale int, index int, base int) {
+	var i int
+
+	switch index {
+	default:
+		goto bad
+
+	case REG_NONE:
+		i = 4 << 3
+		goto bas
+
+	case REG_R8,
+		REG_R9,
+		REG_R10,
+		REG_R11,
+		REG_R12,
+		REG_R13,
+		REG_R14,
+		REG_R15:
+		if ctxt.Asmode != 64 {
+			goto bad
+		}
+		fallthrough
+
+	case REG_AX,
+		REG_CX,
+		REG_DX,
+		REG_BX,
+		REG_BP,
+		REG_SI,
+		REG_DI:
+		i = reg[index] << 3
+	}
+
+	switch scale {
+	default:
+		goto bad
+
+	case 1:
+		break
+
+	case 2:
+		i |= 1 << 6
+
+	case 4:
+		i |= 2 << 6
+
+	case 8:
+		i |= 3 << 6
+	}
+
+bas:
+	switch base {
+	default:
+		goto bad
+
+	case REG_NONE: /* must be mod=00 */
+		i |= 5
+
+	case REG_R8,
+		REG_R9,
+		REG_R10,
+		REG_R11,
+		REG_R12,
+		REG_R13,
+		REG_R14,
+		REG_R15:
+		if ctxt.Asmode != 64 {
+			goto bad
+		}
+		fallthrough
+
+	case REG_AX,
+		REG_CX,
+		REG_DX,
+		REG_BX,
+		REG_SP,
+		REG_BP,
+		REG_SI,
+		REG_DI:
+		i |= reg[base]
+	}
+
+	ctxt.AsmBuf.Put1(byte(i))
+	return
+
+bad:
+	ctxt.Diag("asmidx: bad address %d/%d/%d", scale, index, base)
+	ctxt.AsmBuf.Put1(0)
+	return
+}
+
+func relput4(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) {
+	var rel obj.Reloc
+
+	v := vaddr(ctxt, p, a, &rel)
+	if rel.Siz != 0 {
+		if rel.Siz != 4 {
+			ctxt.Diag("bad reloc")
+		}
+		r := obj.Addrel(ctxt.Cursym)
+		*r = rel
+		r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+	}
+
+	ctxt.AsmBuf.PutInt32(int32(v))
+}
+
+/*
+static void
+relput8(Prog *p, Addr *a)
+{
+	vlong v;
+	Reloc rel, *r;
+
+	v = vaddr(ctxt, p, a, &rel);
+	if(rel.siz != 0) {
+		r = addrel(ctxt->cursym);
+		*r = rel;
+		r->siz = 8;
+		r->off = p->pc + ctxt->andptr - ctxt->and;
+	}
+	put8(ctxt, v);
+}
+*/
+func vaddr(ctxt *obj.Link, p *obj.Prog, a *obj.Addr, r *obj.Reloc) int64 {
+	if r != nil {
+		*r = obj.Reloc{}
+	}
+
+	switch a.Name {
+	case obj.NAME_STATIC,
+		obj.NAME_GOTREF,
+		obj.NAME_EXTERN:
+		s := a.Sym
+		if r == nil {
+			ctxt.Diag("need reloc for %v", obj.Dconv(p, a))
+			log.Fatalf("reloc")
+		}
+
+		if a.Name == obj.NAME_GOTREF {
+			r.Siz = 4
+			r.Type = obj.R_GOTPCREL
+		} else if isextern(s) || (p.Mode != 64 && !ctxt.Flag_shared) {
+			r.Siz = 4
+			r.Type = obj.R_ADDR
+		} else {
+			r.Siz = 4
+			r.Type = obj.R_PCREL
+		}
+
+		r.Off = -1 // caller must fill in
+		r.Sym = s
+		r.Add = a.Offset
+
+		return 0
+	}
+
+	if (a.Type == obj.TYPE_MEM || a.Type == obj.TYPE_ADDR) && a.Reg == REG_TLS {
+		if r == nil {
+			ctxt.Diag("need reloc for %v", obj.Dconv(p, a))
+			log.Fatalf("reloc")
+		}
+
+		if !ctxt.Flag_shared || isAndroid || ctxt.Headtype == obj.Hdarwin {
+			r.Type = obj.R_TLS_LE
+			r.Siz = 4
+			r.Off = -1 // caller must fill in
+			r.Add = a.Offset
+		}
+		return 0
+	}
+
+	return a.Offset
+}
+
+func asmandsz(ctxt *obj.Link, p *obj.Prog, a *obj.Addr, r int, rex int, m64 int) {
+	var base int
+	var rel obj.Reloc
+
+	rex &= 0x40 | Rxr
+	switch {
+	case int64(int32(a.Offset)) == a.Offset:
+		// Offset fits in sign-extended 32 bits.
+	case int64(uint32(a.Offset)) == a.Offset && ctxt.Rexflag&Rxw == 0:
+		// Offset fits in zero-extended 32 bits in a 32-bit instruction.
+		// This is allowed for assembly that wants to use 32-bit hex
+		// constants, e.g. LEAL 0x99999999(AX), AX.
+	default:
+		ctxt.Diag("offset too large in %s", p)
+	}
+	v := int32(a.Offset)
+	rel.Siz = 0
+
+	switch a.Type {
+	case obj.TYPE_ADDR:
+		if a.Name == obj.NAME_NONE {
+			ctxt.Diag("unexpected TYPE_ADDR with NAME_NONE")
+		}
+		if a.Index == REG_TLS {
+			ctxt.Diag("unexpected TYPE_ADDR with index==REG_TLS")
+		}
+		goto bad
+
+	case obj.TYPE_REG:
+		if a.Reg < REG_AL || REG_Y0+15 < a.Reg {
+			goto bad
+		}
+		if v != 0 {
+			goto bad
+		}
+		ctxt.AsmBuf.Put1(byte(3<<6 | reg[a.Reg]<<0 | r<<3))
+		ctxt.Rexflag |= regrex[a.Reg]&(0x40|Rxb) | rex
+		return
+	}
+
+	if a.Type != obj.TYPE_MEM {
+		goto bad
+	}
+
+	if a.Index != REG_NONE && a.Index != REG_TLS {
+		base := int(a.Reg)
+		switch a.Name {
+		case obj.NAME_EXTERN,
+			obj.NAME_GOTREF,
+			obj.NAME_STATIC:
+			if !isextern(a.Sym) && p.Mode == 64 {
+				goto bad
+			}
+			if p.Mode == 32 && ctxt.Flag_shared {
+				// The base register has already been set. It holds the PC
+				// of this instruction returned by a PC-reading thunk.
+				// See obj6.go:rewriteToPcrel.
+			} else {
+				base = REG_NONE
+			}
+			v = int32(vaddr(ctxt, p, a, &rel))
+
+		case obj.NAME_AUTO,
+			obj.NAME_PARAM:
+			base = REG_SP
+		}
+
+		ctxt.Rexflag |= regrex[int(a.Index)]&Rxx | regrex[base]&Rxb | rex
+		if base == REG_NONE {
+			ctxt.AsmBuf.Put1(byte(0<<6 | 4<<0 | r<<3))
+			asmidx(ctxt, int(a.Scale), int(a.Index), base)
+			goto putrelv
+		}
+
+		if v == 0 && rel.Siz == 0 && base != REG_BP && base != REG_R13 {
+			ctxt.AsmBuf.Put1(byte(0<<6 | 4<<0 | r<<3))
+			asmidx(ctxt, int(a.Scale), int(a.Index), base)
+			return
+		}
+
+		if v >= -128 && v < 128 && rel.Siz == 0 {
+			ctxt.AsmBuf.Put1(byte(1<<6 | 4<<0 | r<<3))
+			asmidx(ctxt, int(a.Scale), int(a.Index), base)
+			ctxt.AsmBuf.Put1(byte(v))
+			return
+		}
+
+		ctxt.AsmBuf.Put1(byte(2<<6 | 4<<0 | r<<3))
+		asmidx(ctxt, int(a.Scale), int(a.Index), base)
+		goto putrelv
+	}
+
+	base = int(a.Reg)
+	switch a.Name {
+	case obj.NAME_STATIC,
+		obj.NAME_GOTREF,
+		obj.NAME_EXTERN:
+		if a.Sym == nil {
+			ctxt.Diag("bad addr: %v", p)
+		}
+		if p.Mode == 32 && ctxt.Flag_shared {
+			// The base register has already been set. It holds the PC
+			// of this instruction returned by a PC-reading thunk.
+			// See obj6.go:rewriteToPcrel.
+		} else {
+			base = REG_NONE
+		}
+		v = int32(vaddr(ctxt, p, a, &rel))
+
+	case obj.NAME_AUTO,
+		obj.NAME_PARAM:
+		base = REG_SP
+	}
+
+	if base == REG_TLS {
+		v = int32(vaddr(ctxt, p, a, &rel))
+	}
+
+	ctxt.Rexflag |= regrex[base]&Rxb | rex
+	if base == REG_NONE || (REG_CS <= base && base <= REG_GS) || base == REG_TLS {
+		if (a.Sym == nil || !isextern(a.Sym)) && base == REG_NONE && (a.Name == obj.NAME_STATIC || a.Name == obj.NAME_EXTERN || a.Name == obj.NAME_GOTREF) || p.Mode != 64 {
+			if a.Name == obj.NAME_GOTREF && (a.Offset != 0 || a.Index != 0 || a.Scale != 0) {
+				ctxt.Diag("%v has offset against gotref", p)
+			}
+			ctxt.AsmBuf.Put1(byte(0<<6 | 5<<0 | r<<3))
+			goto putrelv
+		}
+
+		// temporary
+		ctxt.AsmBuf.Put2(
+			byte(0<<6|4<<0|r<<3), // sib present
+			0<<6|4<<3|5<<0,       // DS:d32
+		)
+		goto putrelv
+	}
+
+	if base == REG_SP || base == REG_R12 {
+		if v == 0 {
+			ctxt.AsmBuf.Put1(byte(0<<6 | reg[base]<<0 | r<<3))
+			asmidx(ctxt, int(a.Scale), REG_NONE, base)
+			return
+		}
+
+		if v >= -128 && v < 128 {
+			ctxt.AsmBuf.Put1(byte(1<<6 | reg[base]<<0 | r<<3))
+			asmidx(ctxt, int(a.Scale), REG_NONE, base)
+			ctxt.AsmBuf.Put1(byte(v))
+			return
+		}
+
+		ctxt.AsmBuf.Put1(byte(2<<6 | reg[base]<<0 | r<<3))
+		asmidx(ctxt, int(a.Scale), REG_NONE, base)
+		goto putrelv
+	}
+
+	if REG_AX <= base && base <= REG_R15 {
+		if a.Index == REG_TLS && !ctxt.Flag_shared {
+			rel = obj.Reloc{}
+			rel.Type = obj.R_TLS_LE
+			rel.Siz = 4
+			rel.Sym = nil
+			rel.Add = int64(v)
+			v = 0
+		}
+
+		if v == 0 && rel.Siz == 0 && base != REG_BP && base != REG_R13 {
+			ctxt.AsmBuf.Put1(byte(0<<6 | reg[base]<<0 | r<<3))
+			return
+		}
+
+		if v >= -128 && v < 128 && rel.Siz == 0 {
+			ctxt.AsmBuf.Put2(byte(1<<6|reg[base]<<0|r<<3), byte(v))
+			return
+		}
+
+		ctxt.AsmBuf.Put1(byte(2<<6 | reg[base]<<0 | r<<3))
+		goto putrelv
+	}
+
+	goto bad
+
+putrelv:
+	if rel.Siz != 0 {
+		if rel.Siz != 4 {
+			ctxt.Diag("bad rel")
+			goto bad
+		}
+
+		r := obj.Addrel(ctxt.Cursym)
+		*r = rel
+		r.Off = int32(ctxt.Curp.Pc + int64(ctxt.AsmBuf.Len()))
+	}
+
+	ctxt.AsmBuf.PutInt32(v)
+	return
+
+bad:
+	ctxt.Diag("asmand: bad address %v", obj.Dconv(p, a))
+	return
+}
+
+func asmand(ctxt *obj.Link, p *obj.Prog, a *obj.Addr, ra *obj.Addr) {
+	asmandsz(ctxt, p, a, reg[ra.Reg], regrex[ra.Reg], 0)
+}
+
+func asmando(ctxt *obj.Link, p *obj.Prog, a *obj.Addr, o int) {
+	asmandsz(ctxt, p, a, o, 0, 0)
+}
+
+func bytereg(a *obj.Addr, t *uint8) {
+	if a.Type == obj.TYPE_REG && a.Index == REG_NONE && (REG_AX <= a.Reg && a.Reg <= REG_R15) {
+		a.Reg += REG_AL - REG_AX
+		*t = 0
+	}
+}
+
+func unbytereg(a *obj.Addr, t *uint8) {
+	if a.Type == obj.TYPE_REG && a.Index == REG_NONE && (REG_AL <= a.Reg && a.Reg <= REG_R15B) {
+		a.Reg += REG_AX - REG_AL
+		*t = 0
+	}
+}
+
+const (
+	E = 0xff
+)
+
+var ymovtab = []Movtab{
+	/* push */
+	{APUSHL, Ycs, Ynone, Ynone, 0, [4]uint8{0x0e, E, 0, 0}},
+	{APUSHL, Yss, Ynone, Ynone, 0, [4]uint8{0x16, E, 0, 0}},
+	{APUSHL, Yds, Ynone, Ynone, 0, [4]uint8{0x1e, E, 0, 0}},
+	{APUSHL, Yes, Ynone, Ynone, 0, [4]uint8{0x06, E, 0, 0}},
+	{APUSHL, Yfs, Ynone, Ynone, 0, [4]uint8{0x0f, 0xa0, E, 0}},
+	{APUSHL, Ygs, Ynone, Ynone, 0, [4]uint8{0x0f, 0xa8, E, 0}},
+	{APUSHQ, Yfs, Ynone, Ynone, 0, [4]uint8{0x0f, 0xa0, E, 0}},
+	{APUSHQ, Ygs, Ynone, Ynone, 0, [4]uint8{0x0f, 0xa8, E, 0}},
+	{APUSHW, Ycs, Ynone, Ynone, 0, [4]uint8{Pe, 0x0e, E, 0}},
+	{APUSHW, Yss, Ynone, Ynone, 0, [4]uint8{Pe, 0x16, E, 0}},
+	{APUSHW, Yds, Ynone, Ynone, 0, [4]uint8{Pe, 0x1e, E, 0}},
+	{APUSHW, Yes, Ynone, Ynone, 0, [4]uint8{Pe, 0x06, E, 0}},
+	{APUSHW, Yfs, Ynone, Ynone, 0, [4]uint8{Pe, 0x0f, 0xa0, E}},
+	{APUSHW, Ygs, Ynone, Ynone, 0, [4]uint8{Pe, 0x0f, 0xa8, E}},
+
+	/* pop */
+	{APOPL, Ynone, Ynone, Yds, 0, [4]uint8{0x1f, E, 0, 0}},
+	{APOPL, Ynone, Ynone, Yes, 0, [4]uint8{0x07, E, 0, 0}},
+	{APOPL, Ynone, Ynone, Yss, 0, [4]uint8{0x17, E, 0, 0}},
+	{APOPL, Ynone, Ynone, Yfs, 0, [4]uint8{0x0f, 0xa1, E, 0}},
+	{APOPL, Ynone, Ynone, Ygs, 0, [4]uint8{0x0f, 0xa9, E, 0}},
+	{APOPQ, Ynone, Ynone, Yfs, 0, [4]uint8{0x0f, 0xa1, E, 0}},
+	{APOPQ, Ynone, Ynone, Ygs, 0, [4]uint8{0x0f, 0xa9, E, 0}},
+	{APOPW, Ynone, Ynone, Yds, 0, [4]uint8{Pe, 0x1f, E, 0}},
+	{APOPW, Ynone, Ynone, Yes, 0, [4]uint8{Pe, 0x07, E, 0}},
+	{APOPW, Ynone, Ynone, Yss, 0, [4]uint8{Pe, 0x17, E, 0}},
+	{APOPW, Ynone, Ynone, Yfs, 0, [4]uint8{Pe, 0x0f, 0xa1, E}},
+	{APOPW, Ynone, Ynone, Ygs, 0, [4]uint8{Pe, 0x0f, 0xa9, E}},
+
+	/* mov seg */
+	{AMOVW, Yes, Ynone, Yml, 1, [4]uint8{0x8c, 0, 0, 0}},
+	{AMOVW, Ycs, Ynone, Yml, 1, [4]uint8{0x8c, 1, 0, 0}},
+	{AMOVW, Yss, Ynone, Yml, 1, [4]uint8{0x8c, 2, 0, 0}},
+	{AMOVW, Yds, Ynone, Yml, 1, [4]uint8{0x8c, 3, 0, 0}},
+	{AMOVW, Yfs, Ynone, Yml, 1, [4]uint8{0x8c, 4, 0, 0}},
+	{AMOVW, Ygs, Ynone, Yml, 1, [4]uint8{0x8c, 5, 0, 0}},
+	{AMOVW, Yml, Ynone, Yes, 2, [4]uint8{0x8e, 0, 0, 0}},
+	{AMOVW, Yml, Ynone, Ycs, 2, [4]uint8{0x8e, 1, 0, 0}},
+	{AMOVW, Yml, Ynone, Yss, 2, [4]uint8{0x8e, 2, 0, 0}},
+	{AMOVW, Yml, Ynone, Yds, 2, [4]uint8{0x8e, 3, 0, 0}},
+	{AMOVW, Yml, Ynone, Yfs, 2, [4]uint8{0x8e, 4, 0, 0}},
+	{AMOVW, Yml, Ynone, Ygs, 2, [4]uint8{0x8e, 5, 0, 0}},
+
+	/* mov cr */
+	{AMOVL, Ycr0, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 0, 0}},
+	{AMOVL, Ycr2, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 2, 0}},
+	{AMOVL, Ycr3, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 3, 0}},
+	{AMOVL, Ycr4, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 4, 0}},
+	{AMOVL, Ycr8, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 8, 0}},
+	{AMOVQ, Ycr0, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 0, 0}},
+	{AMOVQ, Ycr2, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 2, 0}},
+	{AMOVQ, Ycr3, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 3, 0}},
+	{AMOVQ, Ycr4, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 4, 0}},
+	{AMOVQ, Ycr8, Ynone, Yml, 3, [4]uint8{0x0f, 0x20, 8, 0}},
+	{AMOVL, Yml, Ynone, Ycr0, 4, [4]uint8{0x0f, 0x22, 0, 0}},
+	{AMOVL, Yml, Ynone, Ycr2, 4, [4]uint8{0x0f, 0x22, 2, 0}},
+	{AMOVL, Yml, Ynone, Ycr3, 4, [4]uint8{0x0f, 0x22, 3, 0}},
+	{AMOVL, Yml, Ynone, Ycr4, 4, [4]uint8{0x0f, 0x22, 4, 0}},
+	{AMOVL, Yml, Ynone, Ycr8, 4, [4]uint8{0x0f, 0x22, 8, 0}},
+	{AMOVQ, Yml, Ynone, Ycr0, 4, [4]uint8{0x0f, 0x22, 0, 0}},
+	{AMOVQ, Yml, Ynone, Ycr2, 4, [4]uint8{0x0f, 0x22, 2, 0}},
+	{AMOVQ, Yml, Ynone, Ycr3, 4, [4]uint8{0x0f, 0x22, 3, 0}},
+	{AMOVQ, Yml, Ynone, Ycr4, 4, [4]uint8{0x0f, 0x22, 4, 0}},
+	{AMOVQ, Yml, Ynone, Ycr8, 4, [4]uint8{0x0f, 0x22, 8, 0}},
+
+	/* mov dr */
+	{AMOVL, Ydr0, Ynone, Yml, 3, [4]uint8{0x0f, 0x21, 0, 0}},
+	{AMOVL, Ydr6, Ynone, Yml, 3, [4]uint8{0x0f, 0x21, 6, 0}},
+	{AMOVL, Ydr7, Ynone, Yml, 3, [4]uint8{0x0f, 0x21, 7, 0}},
+	{AMOVQ, Ydr0, Ynone, Yml, 3, [4]uint8{0x0f, 0x21, 0, 0}},
+	{AMOVQ, Ydr6, Ynone, Yml, 3, [4]uint8{0x0f, 0x21, 6, 0}},
+	{AMOVQ, Ydr7, Ynone, Yml, 3, [4]uint8{0x0f, 0x21, 7, 0}},
+	{AMOVL, Yml, Ynone, Ydr0, 4, [4]uint8{0x0f, 0x23, 0, 0}},
+	{AMOVL, Yml, Ynone, Ydr6, 4, [4]uint8{0x0f, 0x23, 6, 0}},
+	{AMOVL, Yml, Ynone, Ydr7, 4, [4]uint8{0x0f, 0x23, 7, 0}},
+	{AMOVQ, Yml, Ynone, Ydr0, 4, [4]uint8{0x0f, 0x23, 0, 0}},
+	{AMOVQ, Yml, Ynone, Ydr6, 4, [4]uint8{0x0f, 0x23, 6, 0}},
+	{AMOVQ, Yml, Ynone, Ydr7, 4, [4]uint8{0x0f, 0x23, 7, 0}},
+
+	/* mov tr */
+	{AMOVL, Ytr6, Ynone, Yml, 3, [4]uint8{0x0f, 0x24, 6, 0}},
+	{AMOVL, Ytr7, Ynone, Yml, 3, [4]uint8{0x0f, 0x24, 7, 0}},
+	{AMOVL, Yml, Ynone, Ytr6, 4, [4]uint8{0x0f, 0x26, 6, E}},
+	{AMOVL, Yml, Ynone, Ytr7, 4, [4]uint8{0x0f, 0x26, 7, E}},
+
+	/* lgdt, sgdt, lidt, sidt */
+	{AMOVL, Ym, Ynone, Ygdtr, 4, [4]uint8{0x0f, 0x01, 2, 0}},
+	{AMOVL, Ygdtr, Ynone, Ym, 3, [4]uint8{0x0f, 0x01, 0, 0}},
+	{AMOVL, Ym, Ynone, Yidtr, 4, [4]uint8{0x0f, 0x01, 3, 0}},
+	{AMOVL, Yidtr, Ynone, Ym, 3, [4]uint8{0x0f, 0x01, 1, 0}},
+	{AMOVQ, Ym, Ynone, Ygdtr, 4, [4]uint8{0x0f, 0x01, 2, 0}},
+	{AMOVQ, Ygdtr, Ynone, Ym, 3, [4]uint8{0x0f, 0x01, 0, 0}},
+	{AMOVQ, Ym, Ynone, Yidtr, 4, [4]uint8{0x0f, 0x01, 3, 0}},
+	{AMOVQ, Yidtr, Ynone, Ym, 3, [4]uint8{0x0f, 0x01, 1, 0}},
+
+	/* lldt, sldt */
+	{AMOVW, Yml, Ynone, Yldtr, 4, [4]uint8{0x0f, 0x00, 2, 0}},
+	{AMOVW, Yldtr, Ynone, Yml, 3, [4]uint8{0x0f, 0x00, 0, 0}},
+
+	/* lmsw, smsw */
+	{AMOVW, Yml, Ynone, Ymsw, 4, [4]uint8{0x0f, 0x01, 6, 0}},
+	{AMOVW, Ymsw, Ynone, Yml, 3, [4]uint8{0x0f, 0x01, 4, 0}},
+
+	/* ltr, str */
+	{AMOVW, Yml, Ynone, Ytask, 4, [4]uint8{0x0f, 0x00, 3, 0}},
+	{AMOVW, Ytask, Ynone, Yml, 3, [4]uint8{0x0f, 0x00, 1, 0}},
+
+	/* load full pointer - unsupported
+	Movtab{AMOVL, Yml, Ycol, 5, [4]uint8{0, 0, 0, 0}},
+	Movtab{AMOVW, Yml, Ycol, 5, [4]uint8{Pe, 0, 0, 0}},
+	*/
+
+	/* double shift */
+	{ASHLL, Yi8, Yrl, Yml, 6, [4]uint8{0xa4, 0xa5, 0, 0}},
+	{ASHLL, Ycl, Yrl, Yml, 6, [4]uint8{0xa4, 0xa5, 0, 0}},
+	{ASHLL, Ycx, Yrl, Yml, 6, [4]uint8{0xa4, 0xa5, 0, 0}},
+	{ASHRL, Yi8, Yrl, Yml, 6, [4]uint8{0xac, 0xad, 0, 0}},
+	{ASHRL, Ycl, Yrl, Yml, 6, [4]uint8{0xac, 0xad, 0, 0}},
+	{ASHRL, Ycx, Yrl, Yml, 6, [4]uint8{0xac, 0xad, 0, 0}},
+	{ASHLQ, Yi8, Yrl, Yml, 6, [4]uint8{Pw, 0xa4, 0xa5, 0}},
+	{ASHLQ, Ycl, Yrl, Yml, 6, [4]uint8{Pw, 0xa4, 0xa5, 0}},
+	{ASHLQ, Ycx, Yrl, Yml, 6, [4]uint8{Pw, 0xa4, 0xa5, 0}},
+	{ASHRQ, Yi8, Yrl, Yml, 6, [4]uint8{Pw, 0xac, 0xad, 0}},
+	{ASHRQ, Ycl, Yrl, Yml, 6, [4]uint8{Pw, 0xac, 0xad, 0}},
+	{ASHRQ, Ycx, Yrl, Yml, 6, [4]uint8{Pw, 0xac, 0xad, 0}},
+	{ASHLW, Yi8, Yrl, Yml, 6, [4]uint8{Pe, 0xa4, 0xa5, 0}},
+	{ASHLW, Ycl, Yrl, Yml, 6, [4]uint8{Pe, 0xa4, 0xa5, 0}},
+	{ASHLW, Ycx, Yrl, Yml, 6, [4]uint8{Pe, 0xa4, 0xa5, 0}},
+	{ASHRW, Yi8, Yrl, Yml, 6, [4]uint8{Pe, 0xac, 0xad, 0}},
+	{ASHRW, Ycl, Yrl, Yml, 6, [4]uint8{Pe, 0xac, 0xad, 0}},
+	{ASHRW, Ycx, Yrl, Yml, 6, [4]uint8{Pe, 0xac, 0xad, 0}},
+
+	/* load TLS base */
+	{AMOVL, Ytls, Ynone, Yrl, 7, [4]uint8{0, 0, 0, 0}},
+	{AMOVQ, Ytls, Ynone, Yrl, 7, [4]uint8{0, 0, 0, 0}},
+	{0, 0, 0, 0, 0, [4]uint8{}},
+}
+
+func isax(a *obj.Addr) bool {
+	switch a.Reg {
+	case REG_AX, REG_AL, REG_AH:
+		return true
+	}
+
+	if a.Index == REG_AX {
+		return true
+	}
+	return false
+}
+
+func subreg(p *obj.Prog, from int, to int) {
+	if false { /* debug['Q'] */
+		fmt.Printf("\n%v\ts/%v/%v/\n", p, Rconv(from), Rconv(to))
+	}
+
+	if int(p.From.Reg) == from {
+		p.From.Reg = int16(to)
+		p.Ft = 0
+	}
+
+	if int(p.To.Reg) == from {
+		p.To.Reg = int16(to)
+		p.Tt = 0
+	}
+
+	if int(p.From.Index) == from {
+		p.From.Index = int16(to)
+		p.Ft = 0
+	}
+
+	if int(p.To.Index) == from {
+		p.To.Index = int16(to)
+		p.Tt = 0
+	}
+
+	if false { /* debug['Q'] */
+		fmt.Printf("%v\n", p)
+	}
+}
+
+func mediaop(ctxt *obj.Link, o *Optab, op int, osize int, z int) int {
+	switch op {
+	case Pm, Pe, Pf2, Pf3:
+		if osize != 1 {
+			if op != Pm {
+				ctxt.AsmBuf.Put1(byte(op))
+			}
+			ctxt.AsmBuf.Put1(Pm)
+			z++
+			op = int(o.op[z])
+			break
+		}
+		fallthrough
+
+	default:
+		if ctxt.AsmBuf.Len() == 0 || ctxt.AsmBuf.Last() != Pm {
+			ctxt.AsmBuf.Put1(Pm)
+		}
+	}
+
+	ctxt.AsmBuf.Put1(byte(op))
+	return z
+}
+
+var bpduff1 = []byte{
+	0x48, 0x89, 0x6c, 0x24, 0xf0, // MOVQ BP, -16(SP)
+	0x48, 0x8d, 0x6c, 0x24, 0xf0, // LEAQ -16(SP), BP
+}
+
+var bpduff2 = []byte{
+	0x48, 0x8b, 0x6d, 0x00, // MOVQ 0(BP), BP
+}
+
+// Emit VEX prefix and opcode byte.
+// The three addresses are the r/m, vvvv, and reg fields.
+// The reg and rm arguments appear in the same order as the
+// arguments to asmand, which typically follows the call to asmvex.
+// The final two arguments are the VEX prefix (see encoding above)
+// and the opcode byte.
+// For details about vex prefix see:
+// https://en.wikipedia.org/wiki/VEX_prefix#Technical_description
+func asmvex(ctxt *obj.Link, rm, v, r *obj.Addr, vex, opcode uint8) {
+	ctxt.Vexflag = 1
+	rexR := 0
+	if r != nil {
+		rexR = regrex[r.Reg] & Rxr
+	}
+	rexB := 0
+	rexX := 0
+	if rm != nil {
+		rexB = regrex[rm.Reg] & Rxb
+		rexX = regrex[rm.Index] & Rxx
+	}
+	vexM := (vex >> 3) & 0xF
+	vexWLP := vex & 0x87
+	vexV := byte(0)
+	if v != nil {
+		vexV = byte(reg[v.Reg]|(regrex[v.Reg]&Rxr)<<1) & 0xF
+	}
+	vexV ^= 0xF
+	if vexM == 1 && (rexX|rexB) == 0 && vex&vexW1 == 0 {
+		// Can use 2-byte encoding.
+		ctxt.AsmBuf.Put2(0xc5, byte(rexR<<5)^0x80|vexV<<3|vexWLP)
+	} else {
+		// Must use 3-byte encoding.
+		ctxt.AsmBuf.Put3(0xc4,
+			(byte(rexR|rexX|rexB)<<5)^0xE0|vexM,
+			vexV<<3|vexWLP,
+		)
+	}
+	ctxt.AsmBuf.Put1(opcode)
+}
+
+func doasm(ctxt *obj.Link, p *obj.Prog) {
+	ctxt.Curp = p // TODO
+
+	o := opindex[p.As&obj.AMask]
+
+	if o == nil {
+		ctxt.Diag("asmins: missing op %v", p)
+		return
+	}
+
+	pre := prefixof(ctxt, p, &p.From)
+	if pre != 0 {
+		ctxt.AsmBuf.Put1(byte(pre))
+	}
+	pre = prefixof(ctxt, p, &p.To)
+	if pre != 0 {
+		ctxt.AsmBuf.Put1(byte(pre))
+	}
+
+	// TODO(rsc): This special case is for SHRQ $3, AX:DX,
+	// which encodes as SHRQ $32(DX*0), AX.
+	// Similarly SHRQ CX, AX:DX is really SHRQ CX(DX*0), AX.
+	// Change encoding generated by assemblers and compilers and remove.
+	if (p.From.Type == obj.TYPE_CONST || p.From.Type == obj.TYPE_REG) && p.From.Index != REG_NONE && p.From.Scale == 0 {
+		p.From3 = new(obj.Addr)
+		p.From3.Type = obj.TYPE_REG
+		p.From3.Reg = p.From.Index
+		p.From.Index = 0
+	}
+
+	// TODO(rsc): This special case is for PINSRQ etc, CMPSD etc.
+	// Change encoding generated by assemblers and compilers (if any) and remove.
+	switch p.As {
+	case AIMUL3Q, APEXTRW, APINSRW, APINSRD, APINSRQ, APSHUFHW, APSHUFL, APSHUFW, ASHUFPD, ASHUFPS, AAESKEYGENASSIST, APSHUFD, APCLMULQDQ:
+		if p.From3Type() == obj.TYPE_NONE {
+			p.From3 = new(obj.Addr)
+			*p.From3 = p.From
+			p.From = obj.Addr{}
+			p.From.Type = obj.TYPE_CONST
+			p.From.Offset = p.To.Offset
+			p.To.Offset = 0
+		}
+	case ACMPSD, ACMPSS, ACMPPS, ACMPPD:
+		if p.From3Type() == obj.TYPE_NONE {
+			p.From3 = new(obj.Addr)
+			*p.From3 = p.To
+			p.To = obj.Addr{}
+			p.To.Type = obj.TYPE_CONST
+			p.To.Offset = p.From3.Offset
+			p.From3.Offset = 0
+		}
+	}
+
+	if p.Ft == 0 {
+		p.Ft = uint8(oclass(ctxt, p, &p.From))
+	}
+	if p.Tt == 0 {
+		p.Tt = uint8(oclass(ctxt, p, &p.To))
+	}
+
+	ft := int(p.Ft) * Ymax
+	f3t := Ynone * Ymax
+	if p.From3 != nil {
+		f3t = oclass(ctxt, p, p.From3) * Ymax
+	}
+	tt := int(p.Tt) * Ymax
+
+	xo := obj.Bool2int(o.op[0] == 0x0f)
+	z := 0
+	var a *obj.Addr
+	var l int
+	var op int
+	var q *obj.Prog
+	var r *obj.Reloc
+	var rel obj.Reloc
+	var v int64
+	for i := range o.ytab {
+		yt := &o.ytab[i]
+		if ycover[ft+int(yt.from)] != 0 && ycover[f3t+int(yt.from3)] != 0 && ycover[tt+int(yt.to)] != 0 {
+			switch o.prefix {
+			case Px1: /* first option valid only in 32-bit mode */
+				if ctxt.Mode == 64 && z == 0 {
+					z += int(yt.zoffset) + xo
+					continue
+				}
+			case Pq: /* 16 bit escape and opcode escape */
+				ctxt.AsmBuf.Put2(Pe, Pm)
+
+			case Pq3: /* 16 bit escape and opcode escape + REX.W */
+				ctxt.Rexflag |= Pw
+				ctxt.AsmBuf.Put2(Pe, Pm)
+
+			case Pq4: /*  66 0F 38 */
+				ctxt.AsmBuf.Put3(0x66, 0x0F, 0x38)
+
+			case Pf2, /* xmm opcode escape */
+				Pf3:
+				ctxt.AsmBuf.Put2(o.prefix, Pm)
+
+			case Pef3:
+				ctxt.AsmBuf.Put3(Pe, Pf3, Pm)
+
+			case Pfw: /* xmm opcode escape + REX.W */
+				ctxt.Rexflag |= Pw
+				ctxt.AsmBuf.Put2(Pf3, Pm)
+
+			case Pm: /* opcode escape */
+				ctxt.AsmBuf.Put1(Pm)
+
+			case Pe: /* 16 bit escape */
+				ctxt.AsmBuf.Put1(Pe)
+
+			case Pw: /* 64-bit escape */
+				if p.Mode != 64 {
+					ctxt.Diag("asmins: illegal 64: %v", p)
+				}
+				ctxt.Rexflag |= Pw
+
+			case Pw8: /* 64-bit escape if z >= 8 */
+				if z >= 8 {
+					if p.Mode != 64 {
+						ctxt.Diag("asmins: illegal 64: %v", p)
+					}
+					ctxt.Rexflag |= Pw
+				}
+
+			case Pb: /* botch */
+				if p.Mode != 64 && (isbadbyte(&p.From) || isbadbyte(&p.To)) {
+					goto bad
+				}
+				// NOTE(rsc): This is probably safe to do always,
+				// but when enabled it chooses different encodings
+				// than the old cmd/internal/obj/i386 code did,
+				// which breaks our "same bits out" checks.
+				// In particular, CMPB AX, $0 encodes as 80 f8 00
+				// in the original obj/i386, and it would encode
+				// (using a valid, shorter form) as 3c 00 if we enabled
+				// the call to bytereg here.
+				if p.Mode == 64 {
+					bytereg(&p.From, &p.Ft)
+					bytereg(&p.To, &p.Tt)
+				}
+
+			case P32: /* 32 bit but illegal if 64-bit mode */
+				if p.Mode == 64 {
+					ctxt.Diag("asmins: illegal in 64-bit mode: %v", p)
+				}
+
+			case Py: /* 64-bit only, no prefix */
+				if p.Mode != 64 {
+					ctxt.Diag("asmins: illegal in %d-bit mode: %v", p.Mode, p)
+				}
+
+			case Py1: /* 64-bit only if z < 1, no prefix */
+				if z < 1 && p.Mode != 64 {
+					ctxt.Diag("asmins: illegal in %d-bit mode: %v", p.Mode, p)
+				}
+
+			case Py3: /* 64-bit only if z < 3, no prefix */
+				if z < 3 && p.Mode != 64 {
+					ctxt.Diag("asmins: illegal in %d-bit mode: %v", p.Mode, p)
+				}
+			}
+
+			if z >= len(o.op) {
+				log.Fatalf("asmins bad table %v", p)
+			}
+			op = int(o.op[z])
+			// In vex case 0x0f is actually VEX_256_F2_0F_WIG
+			if op == 0x0f && o.prefix != Pvex {
+				ctxt.AsmBuf.Put1(byte(op))
+				z++
+				op = int(o.op[z])
+			}
+
+			switch yt.zcase {
+			default:
+				ctxt.Diag("asmins: unknown z %d %v", yt.zcase, p)
+				return
+
+			case Zpseudo:
+				break
+
+			case Zlit:
+				for ; ; z++ {
+					op = int(o.op[z])
+					if op == 0 {
+						break
+					}
+					ctxt.AsmBuf.Put1(byte(op))
+				}
+
+			case Zlitm_r:
+				for ; ; z++ {
+					op = int(o.op[z])
+					if op == 0 {
+						break
+					}
+					ctxt.AsmBuf.Put1(byte(op))
+				}
+				asmand(ctxt, p, &p.From, &p.To)
+
+			case Zmb_r:
+				bytereg(&p.From, &p.Ft)
+				fallthrough
+
+			case Zm_r:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmand(ctxt, p, &p.From, &p.To)
+
+			case Zm2_r:
+				ctxt.AsmBuf.Put2(byte(op), o.op[z+1])
+				asmand(ctxt, p, &p.From, &p.To)
+
+			case Zm_r_xm:
+				mediaop(ctxt, o, op, int(yt.zoffset), z)
+				asmand(ctxt, p, &p.From, &p.To)
+
+			case Zm_r_xm_nr:
+				ctxt.Rexflag = 0
+				mediaop(ctxt, o, op, int(yt.zoffset), z)
+				asmand(ctxt, p, &p.From, &p.To)
+
+			case Zm_r_i_xm:
+				mediaop(ctxt, o, op, int(yt.zoffset), z)
+				asmand(ctxt, p, &p.From, p.From3)
+				ctxt.AsmBuf.Put1(byte(p.To.Offset))
+
+			case Zibm_r, Zibr_m:
+				for {
+					tmp1 := z
+					z++
+					op = int(o.op[tmp1])
+					if op == 0 {
+						break
+					}
+					ctxt.AsmBuf.Put1(byte(op))
+				}
+				if yt.zcase == Zibr_m {
+					asmand(ctxt, p, &p.To, p.From3)
+				} else {
+					asmand(ctxt, p, p.From3, &p.To)
+				}
+				ctxt.AsmBuf.Put1(byte(p.From.Offset))
+
+			case Zaut_r:
+				ctxt.AsmBuf.Put1(0x8d) // leal
+				if p.From.Type != obj.TYPE_ADDR {
+					ctxt.Diag("asmins: Zaut sb type ADDR")
+				}
+				p.From.Type = obj.TYPE_MEM
+				asmand(ctxt, p, &p.From, &p.To)
+				p.From.Type = obj.TYPE_ADDR
+
+			case Zm_o:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmando(ctxt, p, &p.From, int(o.op[z+1]))
+
+			case Zr_m:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmand(ctxt, p, &p.To, &p.From)
+
+			case Zvex_rm_v_r:
+				asmvex(ctxt, &p.From, p.From3, &p.To, o.op[z], o.op[z+1])
+				asmand(ctxt, p, &p.From, &p.To)
+
+			case Zvex_i_r_v:
+				asmvex(ctxt, p.From3, &p.To, nil, o.op[z], o.op[z+1])
+				regnum := byte(0x7)
+				if p.From3.Reg >= REG_X0 && p.From3.Reg <= REG_X15 {
+					regnum &= byte(p.From3.Reg - REG_X0)
+				} else {
+					regnum &= byte(p.From3.Reg - REG_Y0)
+				}
+				ctxt.AsmBuf.Put1(byte(o.op[z+2]) | regnum)
+				ctxt.AsmBuf.Put1(byte(p.From.Offset))
+
+			case Zvex_i_rm_v_r:
+				asmvex(ctxt, &p.From, p.From3, &p.To, o.op[z], o.op[z+1])
+				asmand(ctxt, p, &p.From, &p.To)
+				ctxt.AsmBuf.Put1(byte(p.From3.Offset))
+
+			case Zvex_i_rm_r:
+				asmvex(ctxt, p.From3, nil, &p.To, o.op[z], o.op[z+1])
+				asmand(ctxt, p, p.From3, &p.To)
+				ctxt.AsmBuf.Put1(byte(p.From.Offset))
+
+			case Zvex_v_rm_r:
+				asmvex(ctxt, p.From3, &p.From, &p.To, o.op[z], o.op[z+1])
+				asmand(ctxt, p, p.From3, &p.To)
+
+			case Zvex_r_v_rm:
+				asmvex(ctxt, &p.To, p.From3, &p.From, o.op[z], o.op[z+1])
+				asmand(ctxt, p, &p.To, &p.From)
+
+			case Zr_m_xm:
+				mediaop(ctxt, o, op, int(yt.zoffset), z)
+				asmand(ctxt, p, &p.To, &p.From)
+
+			case Zr_m_xm_nr:
+				ctxt.Rexflag = 0
+				mediaop(ctxt, o, op, int(yt.zoffset), z)
+				asmand(ctxt, p, &p.To, &p.From)
+
+			case Zo_m:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmando(ctxt, p, &p.To, int(o.op[z+1]))
+
+			case Zcallindreg:
+				r = obj.Addrel(ctxt.Cursym)
+				r.Off = int32(p.Pc)
+				r.Type = obj.R_CALLIND
+				r.Siz = 0
+				fallthrough
+
+			case Zo_m64:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmandsz(ctxt, p, &p.To, int(o.op[z+1]), 0, 1)
+
+			case Zm_ibo:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmando(ctxt, p, &p.From, int(o.op[z+1]))
+				ctxt.AsmBuf.Put1(byte(vaddr(ctxt, p, &p.To, nil)))
+
+			case Zibo_m:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmando(ctxt, p, &p.To, int(o.op[z+1]))
+				ctxt.AsmBuf.Put1(byte(vaddr(ctxt, p, &p.From, nil)))
+
+			case Zibo_m_xm:
+				z = mediaop(ctxt, o, op, int(yt.zoffset), z)
+				asmando(ctxt, p, &p.To, int(o.op[z+1]))
+				ctxt.AsmBuf.Put1(byte(vaddr(ctxt, p, &p.From, nil)))
+
+			case Z_ib, Zib_:
+				if yt.zcase == Zib_ {
+					a = &p.From
+				} else {
+					a = &p.To
+				}
+				ctxt.AsmBuf.Put1(byte(op))
+				if p.As == AXABORT {
+					ctxt.AsmBuf.Put1(o.op[z+1])
+				}
+				ctxt.AsmBuf.Put1(byte(vaddr(ctxt, p, a, nil)))
+
+			case Zib_rp:
+				ctxt.Rexflag |= regrex[p.To.Reg] & (Rxb | 0x40)
+				ctxt.AsmBuf.Put2(byte(op+reg[p.To.Reg]), byte(vaddr(ctxt, p, &p.From, nil)))
+
+			case Zil_rp:
+				ctxt.Rexflag |= regrex[p.To.Reg] & Rxb
+				ctxt.AsmBuf.Put1(byte(op + reg[p.To.Reg]))
+				if o.prefix == Pe {
+					v = vaddr(ctxt, p, &p.From, nil)
+					ctxt.AsmBuf.PutInt16(int16(v))
+				} else {
+					relput4(ctxt, p, &p.From)
+				}
+
+			case Zo_iw:
+				ctxt.AsmBuf.Put1(byte(op))
+				if p.From.Type != obj.TYPE_NONE {
+					v = vaddr(ctxt, p, &p.From, nil)
+					ctxt.AsmBuf.PutInt16(int16(v))
+				}
+
+			case Ziq_rp:
+				v = vaddr(ctxt, p, &p.From, &rel)
+				l = int(v >> 32)
+				if l == 0 && rel.Siz != 8 {
+					//p->mark |= 0100;
+					//print("zero: %llux %v\n", v, p);
+					ctxt.Rexflag &^= (0x40 | Rxw)
+
+					ctxt.Rexflag |= regrex[p.To.Reg] & Rxb
+					ctxt.AsmBuf.Put1(byte(0xb8 + reg[p.To.Reg]))
+					if rel.Type != 0 {
+						r = obj.Addrel(ctxt.Cursym)
+						*r = rel
+						r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+					}
+
+					ctxt.AsmBuf.PutInt32(int32(v))
+				} else if l == -1 && uint64(v)&(uint64(1)<<31) != 0 { /* sign extend */
+
+					//p->mark |= 0100;
+					//print("sign: %llux %v\n", v, p);
+					ctxt.AsmBuf.Put1(0xc7)
+					asmando(ctxt, p, &p.To, 0)
+
+					ctxt.AsmBuf.PutInt32(int32(v)) // need all 8
+				} else {
+					//print("all: %llux %v\n", v, p);
+					ctxt.Rexflag |= regrex[p.To.Reg] & Rxb
+					ctxt.AsmBuf.Put1(byte(op + reg[p.To.Reg]))
+					if rel.Type != 0 {
+						r = obj.Addrel(ctxt.Cursym)
+						*r = rel
+						r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+					}
+
+					ctxt.AsmBuf.PutInt64(v)
+				}
+
+			case Zib_rr:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmand(ctxt, p, &p.To, &p.To)
+				ctxt.AsmBuf.Put1(byte(vaddr(ctxt, p, &p.From, nil)))
+
+			case Z_il, Zil_:
+				if yt.zcase == Zil_ {
+					a = &p.From
+				} else {
+					a = &p.To
+				}
+				ctxt.AsmBuf.Put1(byte(op))
+				if o.prefix == Pe {
+					v = vaddr(ctxt, p, a, nil)
+					ctxt.AsmBuf.PutInt16(int16(v))
+				} else {
+					relput4(ctxt, p, a)
+				}
+
+			case Zm_ilo, Zilo_m:
+				ctxt.AsmBuf.Put1(byte(op))
+				if yt.zcase == Zilo_m {
+					a = &p.From
+					asmando(ctxt, p, &p.To, int(o.op[z+1]))
+				} else {
+					a = &p.To
+					asmando(ctxt, p, &p.From, int(o.op[z+1]))
+				}
+
+				if o.prefix == Pe {
+					v = vaddr(ctxt, p, a, nil)
+					ctxt.AsmBuf.PutInt16(int16(v))
+				} else {
+					relput4(ctxt, p, a)
+				}
+
+			case Zil_rr:
+				ctxt.AsmBuf.Put1(byte(op))
+				asmand(ctxt, p, &p.To, &p.To)
+				if o.prefix == Pe {
+					v = vaddr(ctxt, p, &p.From, nil)
+					ctxt.AsmBuf.PutInt16(int16(v))
+				} else {
+					relput4(ctxt, p, &p.From)
+				}
+
+			case Z_rp:
+				ctxt.Rexflag |= regrex[p.To.Reg] & (Rxb | 0x40)
+				ctxt.AsmBuf.Put1(byte(op + reg[p.To.Reg]))
+
+			case Zrp_:
+				ctxt.Rexflag |= regrex[p.From.Reg] & (Rxb | 0x40)
+				ctxt.AsmBuf.Put1(byte(op + reg[p.From.Reg]))
+
+			case Zclr:
+				ctxt.Rexflag &^= Pw
+				ctxt.AsmBuf.Put1(byte(op))
+				asmand(ctxt, p, &p.To, &p.To)
+
+			case Zcallcon, Zjmpcon:
+				if yt.zcase == Zcallcon {
+					ctxt.AsmBuf.Put1(byte(op))
+				} else {
+					ctxt.AsmBuf.Put1(o.op[z+1])
+				}
+				r = obj.Addrel(ctxt.Cursym)
+				r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+				r.Type = obj.R_PCREL
+				r.Siz = 4
+				r.Add = p.To.Offset
+				ctxt.AsmBuf.PutInt32(0)
+
+			case Zcallind:
+				ctxt.AsmBuf.Put2(byte(op), o.op[z+1])
+				r = obj.Addrel(ctxt.Cursym)
+				r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+				if p.Mode == 64 {
+					r.Type = obj.R_PCREL
+				} else {
+					r.Type = obj.R_ADDR
+				}
+				r.Siz = 4
+				r.Add = p.To.Offset
+				r.Sym = p.To.Sym
+				ctxt.AsmBuf.PutInt32(0)
+
+			case Zcall, Zcallduff:
+				if p.To.Sym == nil {
+					ctxt.Diag("call without target")
+					log.Fatalf("bad code")
+				}
+
+				if yt.zcase == Zcallduff && ctxt.Flag_dynlink {
+					ctxt.Diag("directly calling duff when dynamically linking Go")
+				}
+
+				if ctxt.Framepointer_enabled && yt.zcase == Zcallduff && p.Mode == 64 {
+					// Maintain BP around call, since duffcopy/duffzero can't do it
+					// (the call jumps into the middle of the function).
+					// This makes it possible to see call sites for duffcopy/duffzero in
+					// BP-based profiling tools like Linux perf (which is the
+					// whole point of obj.Framepointer_enabled).
+					// MOVQ BP, -16(SP)
+					// LEAQ -16(SP), BP
+					ctxt.AsmBuf.Put(bpduff1)
+				}
+				ctxt.AsmBuf.Put1(byte(op))
+				r = obj.Addrel(ctxt.Cursym)
+				r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+				r.Sym = p.To.Sym
+				r.Add = p.To.Offset
+				r.Type = obj.R_CALL
+				r.Siz = 4
+				ctxt.AsmBuf.PutInt32(0)
+
+				if ctxt.Framepointer_enabled && yt.zcase == Zcallduff && p.Mode == 64 {
+					// Pop BP pushed above.
+					// MOVQ 0(BP), BP
+					ctxt.AsmBuf.Put(bpduff2)
+				}
+
+			// TODO: jump across functions needs reloc
+			case Zbr, Zjmp, Zloop:
+				if p.As == AXBEGIN {
+					ctxt.AsmBuf.Put1(byte(op))
+				}
+				if p.To.Sym != nil {
+					if yt.zcase != Zjmp {
+						ctxt.Diag("branch to ATEXT")
+						log.Fatalf("bad code")
+					}
+
+					ctxt.AsmBuf.Put1(o.op[z+1])
+					r = obj.Addrel(ctxt.Cursym)
+					r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+					r.Sym = p.To.Sym
+					r.Type = obj.R_PCREL
+					r.Siz = 4
+					ctxt.AsmBuf.PutInt32(0)
+					break
+				}
+
+				// Assumes q is in this function.
+				// TODO: Check in input, preserve in brchain.
+
+				// Fill in backward jump now.
+				q = p.Pcond
+
+				if q == nil {
+					ctxt.Diag("jmp/branch/loop without target")
+					log.Fatalf("bad code")
+				}
+
+				if p.Back&1 != 0 {
+					v = q.Pc - (p.Pc + 2)
+					if v >= -128 && p.As != AXBEGIN {
+						if p.As == AJCXZL {
+							ctxt.AsmBuf.Put1(0x67)
+						}
+						ctxt.AsmBuf.Put2(byte(op), byte(v))
+					} else if yt.zcase == Zloop {
+						ctxt.Diag("loop too far: %v", p)
+					} else {
+						v -= 5 - 2
+						if p.As == AXBEGIN {
+							v--
+						}
+						if yt.zcase == Zbr {
+							ctxt.AsmBuf.Put1(0x0f)
+							v--
+						}
+
+						ctxt.AsmBuf.Put1(o.op[z+1])
+						ctxt.AsmBuf.PutInt32(int32(v))
+					}
+
+					break
+				}
+
+				// Annotate target; will fill in later.
+				p.Forwd = q.Rel
+
+				q.Rel = p
+				if p.Back&2 != 0 && p.As != AXBEGIN { // short
+					if p.As == AJCXZL {
+						ctxt.AsmBuf.Put1(0x67)
+					}
+					ctxt.AsmBuf.Put2(byte(op), 0)
+				} else if yt.zcase == Zloop {
+					ctxt.Diag("loop too far: %v", p)
+				} else {
+					if yt.zcase == Zbr {
+						ctxt.AsmBuf.Put1(0x0f)
+					}
+					ctxt.AsmBuf.Put1(o.op[z+1])
+					ctxt.AsmBuf.PutInt32(0)
+				}
+
+				break
+
+			/*
+				v = q->pc - p->pc - 2;
+				if((v >= -128 && v <= 127) || p->pc == -1 || q->pc == -1) {
+					*ctxt->andptr++ = op;
+					*ctxt->andptr++ = v;
+				} else {
+					v -= 5-2;
+					if(yt.zcase == Zbr) {
+						*ctxt->andptr++ = 0x0f;
+						v--;
+					}
+					*ctxt->andptr++ = o->op[z+1];
+					*ctxt->andptr++ = v;
+					*ctxt->andptr++ = v>>8;
+					*ctxt->andptr++ = v>>16;
+					*ctxt->andptr++ = v>>24;
+				}
+			*/
+
+			case Zbyte:
+				v = vaddr(ctxt, p, &p.From, &rel)
+				if rel.Siz != 0 {
+					rel.Siz = uint8(op)
+					r = obj.Addrel(ctxt.Cursym)
+					*r = rel
+					r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+				}
+
+				ctxt.AsmBuf.Put1(byte(v))
+				if op > 1 {
+					ctxt.AsmBuf.Put1(byte(v >> 8))
+					if op > 2 {
+						ctxt.AsmBuf.PutInt16(int16(v >> 16))
+						if op > 4 {
+							ctxt.AsmBuf.PutInt32(int32(v >> 32))
+						}
+					}
+				}
+			}
+
+			return
+		}
+		z += int(yt.zoffset) + xo
+	}
+	for mo := ymovtab; mo[0].as != 0; mo = mo[1:] {
+		var pp obj.Prog
+		var t []byte
+		if p.As == mo[0].as {
+			if ycover[ft+int(mo[0].ft)] != 0 && ycover[f3t+int(mo[0].f3t)] != 0 && ycover[tt+int(mo[0].tt)] != 0 {
+				t = mo[0].op[:]
+				switch mo[0].code {
+				default:
+					ctxt.Diag("asmins: unknown mov %d %v", mo[0].code, p)
+
+				case 0: /* lit */
+					for z = 0; t[z] != E; z++ {
+						ctxt.AsmBuf.Put1(t[z])
+					}
+
+				case 1: /* r,m */
+					ctxt.AsmBuf.Put1(t[0])
+					asmando(ctxt, p, &p.To, int(t[1]))
+
+				case 2: /* m,r */
+					ctxt.AsmBuf.Put1(t[0])
+					asmando(ctxt, p, &p.From, int(t[1]))
+
+				case 3: /* r,m - 2op */
+					ctxt.AsmBuf.Put2(t[0], t[1])
+					asmando(ctxt, p, &p.To, int(t[2]))
+					ctxt.Rexflag |= regrex[p.From.Reg] & (Rxr | 0x40)
+
+				case 4: /* m,r - 2op */
+					ctxt.AsmBuf.Put2(t[0], t[1])
+					asmando(ctxt, p, &p.From, int(t[2]))
+					ctxt.Rexflag |= regrex[p.To.Reg] & (Rxr | 0x40)
+
+				case 5: /* load full pointer, trash heap */
+					if t[0] != 0 {
+						ctxt.AsmBuf.Put1(t[0])
+					}
+					switch p.To.Index {
+					default:
+						goto bad
+
+					case REG_DS:
+						ctxt.AsmBuf.Put1(0xc5)
+
+					case REG_SS:
+						ctxt.AsmBuf.Put2(0x0f, 0xb2)
+
+					case REG_ES:
+						ctxt.AsmBuf.Put1(0xc4)
+
+					case REG_FS:
+						ctxt.AsmBuf.Put2(0x0f, 0xb4)
+
+					case REG_GS:
+						ctxt.AsmBuf.Put2(0x0f, 0xb5)
+					}
+
+					asmand(ctxt, p, &p.From, &p.To)
+
+				case 6: /* double shift */
+					if t[0] == Pw {
+						if p.Mode != 64 {
+							ctxt.Diag("asmins: illegal 64: %v", p)
+						}
+						ctxt.Rexflag |= Pw
+						t = t[1:]
+					} else if t[0] == Pe {
+						ctxt.AsmBuf.Put1(Pe)
+						t = t[1:]
+					}
+
+					switch p.From.Type {
+					default:
+						goto bad
+
+					case obj.TYPE_CONST:
+						ctxt.AsmBuf.Put2(0x0f, t[0])
+						asmandsz(ctxt, p, &p.To, reg[p.From3.Reg], regrex[p.From3.Reg], 0)
+						ctxt.AsmBuf.Put1(byte(p.From.Offset))
+
+					case obj.TYPE_REG:
+						switch p.From.Reg {
+						default:
+							goto bad
+
+						case REG_CL, REG_CX:
+							ctxt.AsmBuf.Put2(0x0f, t[1])
+							asmandsz(ctxt, p, &p.To, reg[p.From3.Reg], regrex[p.From3.Reg], 0)
+						}
+					}
+
+				// NOTE: The systems listed here are the ones that use the "TLS initial exec" model,
+				// where you load the TLS base register into a register and then index off that
+				// register to access the actual TLS variables. Systems that allow direct TLS access
+				// are handled in prefixof above and should not be listed here.
+				case 7: /* mov tls, r */
+					if p.Mode == 64 && p.As != AMOVQ || p.Mode == 32 && p.As != AMOVL {
+						ctxt.Diag("invalid load of TLS: %v", p)
+					}
+
+					if p.Mode == 32 {
+						// NOTE: The systems listed here are the ones that use the "TLS initial exec" model,
+						// where you load the TLS base register into a register and then index off that
+						// register to access the actual TLS variables. Systems that allow direct TLS access
+						// are handled in prefixof above and should not be listed here.
+						switch ctxt.Headtype {
+						default:
+							log.Fatalf("unknown TLS base location for %v", ctxt.Headtype)
+
+						case obj.Hlinux,
+							obj.Hnacl:
+							if ctxt.Flag_shared {
+								// Note that this is not generating the same insns as the other cases.
+								//     MOV TLS, dst
+								// becomes
+								//     call __x86.get_pc_thunk.dst
+								//     movl (gotpc + g@gotntpoff)(dst), dst
+								// which is encoded as
+								//     call __x86.get_pc_thunk.dst
+								//     movq 0(dst), dst
+								// and R_CALL & R_TLS_IE relocs. This all assumes the only tls variable we access
+								// is g, which we can't check here, but will when we assemble the second
+								// instruction.
+								dst := p.To.Reg
+								ctxt.AsmBuf.Put1(0xe8)
+								r = obj.Addrel(ctxt.Cursym)
+								r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+								r.Type = obj.R_CALL
+								r.Siz = 4
+								r.Sym = obj.Linklookup(ctxt, "__x86.get_pc_thunk."+strings.ToLower(Rconv(int(dst))), 0)
+								ctxt.AsmBuf.PutInt32(0)
+
+								ctxt.AsmBuf.Put2(0x8B, byte(2<<6|reg[dst]|(reg[dst]<<3)))
+								r = obj.Addrel(ctxt.Cursym)
+								r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+								r.Type = obj.R_TLS_IE
+								r.Siz = 4
+								r.Add = 2
+								ctxt.AsmBuf.PutInt32(0)
+							} else {
+								// ELF TLS base is 0(GS).
+								pp.From = p.From
+
+								pp.From.Type = obj.TYPE_MEM
+								pp.From.Reg = REG_GS
+								pp.From.Offset = 0
+								pp.From.Index = REG_NONE
+								pp.From.Scale = 0
+								ctxt.AsmBuf.Put2(0x65, // GS
+									0x8B)
+								asmand(ctxt, p, &pp.From, &p.To)
+							}
+						case obj.Hplan9:
+							if ctxt.Plan9privates == nil {
+								ctxt.Plan9privates = obj.Linklookup(ctxt, "_privates", 0)
+							}
+							pp.From = obj.Addr{}
+							pp.From.Type = obj.TYPE_MEM
+							pp.From.Name = obj.NAME_EXTERN
+							pp.From.Sym = ctxt.Plan9privates
+							pp.From.Offset = 0
+							pp.From.Index = REG_NONE
+							ctxt.AsmBuf.Put1(0x8B)
+							asmand(ctxt, p, &pp.From, &p.To)
+
+						case obj.Hwindows, obj.Hwindowsgui:
+							// Windows TLS base is always 0x14(FS).
+							pp.From = p.From
+
+							pp.From.Type = obj.TYPE_MEM
+							pp.From.Reg = REG_FS
+							pp.From.Offset = 0x14
+							pp.From.Index = REG_NONE
+							pp.From.Scale = 0
+							ctxt.AsmBuf.Put2(0x64, // FS
+								0x8B)
+							asmand(ctxt, p, &pp.From, &p.To)
+						}
+						break
+					}
+
+					switch ctxt.Headtype {
+					default:
+						log.Fatalf("unknown TLS base location for %v", ctxt.Headtype)
+
+					case obj.Hlinux:
+						if !ctxt.Flag_shared {
+							log.Fatalf("unknown TLS base location for linux without -shared")
+						}
+						// Note that this is not generating the same insn as the other cases.
+						//     MOV TLS, R_to
+						// becomes
+						//     movq g@gottpoff(%rip), R_to
+						// which is encoded as
+						//     movq 0(%rip), R_to
+						// and a R_TLS_IE reloc. This all assumes the only tls variable we access
+						// is g, which we can't check here, but will when we assemble the second
+						// instruction.
+						ctxt.Rexflag = Pw | (regrex[p.To.Reg] & Rxr)
+
+						ctxt.AsmBuf.Put2(0x8B, byte(0x05|(reg[p.To.Reg]<<3)))
+						r = obj.Addrel(ctxt.Cursym)
+						r.Off = int32(p.Pc + int64(ctxt.AsmBuf.Len()))
+						r.Type = obj.R_TLS_IE
+						r.Siz = 4
+						r.Add = -4
+						ctxt.AsmBuf.PutInt32(0)
+
+					case obj.Hplan9:
+						if ctxt.Plan9privates == nil {
+							ctxt.Plan9privates = obj.Linklookup(ctxt, "_privates", 0)
+						}
+						pp.From = obj.Addr{}
+						pp.From.Type = obj.TYPE_MEM
+						pp.From.Name = obj.NAME_EXTERN
+						pp.From.Sym = ctxt.Plan9privates
+						pp.From.Offset = 0
+						pp.From.Index = REG_NONE
+						ctxt.Rexflag |= Pw
+						ctxt.AsmBuf.Put1(0x8B)
+						asmand(ctxt, p, &pp.From, &p.To)
+
+					case obj.Hsolaris: // TODO(rsc): Delete Hsolaris from list. Should not use this code. See progedit in obj6.c.
+						// TLS base is 0(FS).
+						pp.From = p.From
+
+						pp.From.Type = obj.TYPE_MEM
+						pp.From.Name = obj.NAME_NONE
+						pp.From.Reg = REG_NONE
+						pp.From.Offset = 0
+						pp.From.Index = REG_NONE
+						pp.From.Scale = 0
+						ctxt.Rexflag |= Pw
+						ctxt.AsmBuf.Put2(0x64, // FS
+							0x8B)
+						asmand(ctxt, p, &pp.From, &p.To)
+
+					case obj.Hwindows, obj.Hwindowsgui:
+						// Windows TLS base is always 0x28(GS).
+						pp.From = p.From
+
+						pp.From.Type = obj.TYPE_MEM
+						pp.From.Name = obj.NAME_NONE
+						pp.From.Reg = REG_GS
+						pp.From.Offset = 0x28
+						pp.From.Index = REG_NONE
+						pp.From.Scale = 0
+						ctxt.Rexflag |= Pw
+						ctxt.AsmBuf.Put2(0x65, // GS
+							0x8B)
+						asmand(ctxt, p, &pp.From, &p.To)
+					}
+				}
+				return
+			}
+		}
+	}
+	goto bad
+
+bad:
+	if p.Mode != 64 {
+		/*
+		 * here, the assembly has failed.
+		 * if its a byte instruction that has
+		 * unaddressable registers, try to
+		 * exchange registers and reissue the
+		 * instruction with the operands renamed.
+		 */
+		pp := *p
+
+		unbytereg(&pp.From, &pp.Ft)
+		unbytereg(&pp.To, &pp.Tt)
+
+		z := int(p.From.Reg)
+		if p.From.Type == obj.TYPE_REG && z >= REG_BP && z <= REG_DI {
+			// TODO(rsc): Use this code for x86-64 too. It has bug fixes not present in the amd64 code base.
+			// For now, different to keep bit-for-bit compatibility.
+			if p.Mode == 32 {
+				breg := byteswapreg(ctxt, &p.To)
+				if breg != REG_AX {
+					ctxt.AsmBuf.Put1(0x87) // xchg lhs,bx
+					asmando(ctxt, p, &p.From, reg[breg])
+					subreg(&pp, z, breg)
+					doasm(ctxt, &pp)
+					ctxt.AsmBuf.Put1(0x87) // xchg lhs,bx
+					asmando(ctxt, p, &p.From, reg[breg])
+				} else {
+					ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg lsh,ax
+					subreg(&pp, z, REG_AX)
+					doasm(ctxt, &pp)
+					ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg lsh,ax
+				}
+				return
+			}
+
+			if isax(&p.To) || p.To.Type == obj.TYPE_NONE {
+				// We certainly don't want to exchange
+				// with AX if the op is MUL or DIV.
+				ctxt.AsmBuf.Put1(0x87) // xchg lhs,bx
+				asmando(ctxt, p, &p.From, reg[REG_BX])
+				subreg(&pp, z, REG_BX)
+				doasm(ctxt, &pp)
+				ctxt.AsmBuf.Put1(0x87) // xchg lhs,bx
+				asmando(ctxt, p, &p.From, reg[REG_BX])
+			} else {
+				ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg lsh,ax
+				subreg(&pp, z, REG_AX)
+				doasm(ctxt, &pp)
+				ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg lsh,ax
+			}
+			return
+		}
+
+		z = int(p.To.Reg)
+		if p.To.Type == obj.TYPE_REG && z >= REG_BP && z <= REG_DI {
+			// TODO(rsc): Use this code for x86-64 too. It has bug fixes not present in the amd64 code base.
+			// For now, different to keep bit-for-bit compatibility.
+			if p.Mode == 32 {
+				breg := byteswapreg(ctxt, &p.From)
+				if breg != REG_AX {
+					ctxt.AsmBuf.Put1(0x87) //xchg rhs,bx
+					asmando(ctxt, p, &p.To, reg[breg])
+					subreg(&pp, z, breg)
+					doasm(ctxt, &pp)
+					ctxt.AsmBuf.Put1(0x87) // xchg rhs,bx
+					asmando(ctxt, p, &p.To, reg[breg])
+				} else {
+					ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg rsh,ax
+					subreg(&pp, z, REG_AX)
+					doasm(ctxt, &pp)
+					ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg rsh,ax
+				}
+				return
+			}
+
+			if isax(&p.From) {
+				ctxt.AsmBuf.Put1(0x87) // xchg rhs,bx
+				asmando(ctxt, p, &p.To, reg[REG_BX])
+				subreg(&pp, z, REG_BX)
+				doasm(ctxt, &pp)
+				ctxt.AsmBuf.Put1(0x87) // xchg rhs,bx
+				asmando(ctxt, p, &p.To, reg[REG_BX])
+			} else {
+				ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg rsh,ax
+				subreg(&pp, z, REG_AX)
+				doasm(ctxt, &pp)
+				ctxt.AsmBuf.Put1(byte(0x90 + reg[z])) // xchg rsh,ax
+			}
+			return
+		}
+	}
+
+	ctxt.Diag("invalid instruction: %v", p)
+	//	ctxt.Diag("doasm: notfound ft=%d tt=%d %v %d %d", p.Ft, p.Tt, p, oclass(ctxt, p, &p.From), oclass(ctxt, p, &p.To))
+	return
+}
+
+// byteswapreg returns a byte-addressable register (AX, BX, CX, DX)
+// which is not referenced in a.
+// If a is empty, it returns BX to account for MULB-like instructions
+// that might use DX and AX.
+func byteswapreg(ctxt *obj.Link, a *obj.Addr) int {
+	cand := 1
+	canc := cand
+	canb := canc
+	cana := canb
+
+	if a.Type == obj.TYPE_NONE {
+		cand = 0
+		cana = cand
+	}
+
+	if a.Type == obj.TYPE_REG || ((a.Type == obj.TYPE_MEM || a.Type == obj.TYPE_ADDR) && a.Name == obj.NAME_NONE) {
+		switch a.Reg {
+		case REG_NONE:
+			cand = 0
+			cana = cand
+
+		case REG_AX, REG_AL, REG_AH:
+			cana = 0
+
+		case REG_BX, REG_BL, REG_BH:
+			canb = 0
+
+		case REG_CX, REG_CL, REG_CH:
+			canc = 0
+
+		case REG_DX, REG_DL, REG_DH:
+			cand = 0
+		}
+	}
+
+	if a.Type == obj.TYPE_MEM || a.Type == obj.TYPE_ADDR {
+		switch a.Index {
+		case REG_AX:
+			cana = 0
+
+		case REG_BX:
+			canb = 0
+
+		case REG_CX:
+			canc = 0
+
+		case REG_DX:
+			cand = 0
+		}
+	}
+
+	if cana != 0 {
+		return REG_AX
+	}
+	if canb != 0 {
+		return REG_BX
+	}
+	if canc != 0 {
+		return REG_CX
+	}
+	if cand != 0 {
+		return REG_DX
+	}
+
+	ctxt.Diag("impossible byte register")
+	log.Fatalf("bad code")
+	return 0
+}
+
+func isbadbyte(a *obj.Addr) bool {
+	return a.Type == obj.TYPE_REG && (REG_BP <= a.Reg && a.Reg <= REG_DI || REG_BPB <= a.Reg && a.Reg <= REG_DIB)
+}
+
+var naclret = []uint8{
+	0x5e, // POPL SI
+	// 0x8b, 0x7d, 0x00, // MOVL (BP), DI - catch return to invalid address, for debugging
+	0x83,
+	0xe6,
+	0xe0, // ANDL $~31, SI
+	0x4c,
+	0x01,
+	0xfe, // ADDQ R15, SI
+	0xff,
+	0xe6, // JMP SI
+}
+
+var naclret8 = []uint8{
+	0x5d, // POPL BP
+	// 0x8b, 0x7d, 0x00, // MOVL (BP), DI - catch return to invalid address, for debugging
+	0x83,
+	0xe5,
+	0xe0, // ANDL $~31, BP
+	0xff,
+	0xe5, // JMP BP
+}
+
+var naclspfix = []uint8{0x4c, 0x01, 0xfc} // ADDQ R15, SP
+
+var naclbpfix = []uint8{0x4c, 0x01, 0xfd} // ADDQ R15, BP
+
+var naclmovs = []uint8{
+	0x89,
+	0xf6, // MOVL SI, SI
+	0x49,
+	0x8d,
+	0x34,
+	0x37, // LEAQ (R15)(SI*1), SI
+	0x89,
+	0xff, // MOVL DI, DI
+	0x49,
+	0x8d,
+	0x3c,
+	0x3f, // LEAQ (R15)(DI*1), DI
+}
+
+var naclstos = []uint8{
+	0x89,
+	0xff, // MOVL DI, DI
+	0x49,
+	0x8d,
+	0x3c,
+	0x3f, // LEAQ (R15)(DI*1), DI
+}
+
+func nacltrunc(ctxt *obj.Link, reg int) {
+	if reg >= REG_R8 {
+		ctxt.AsmBuf.Put1(0x45)
+	}
+	reg = (reg - REG_AX) & 7
+	ctxt.AsmBuf.Put2(0x89, byte(3<<6|reg<<3|reg))
+}
+
+func asmins(ctxt *obj.Link, p *obj.Prog) {
+	ctxt.AsmBuf.Reset()
+	ctxt.Asmode = int(p.Mode)
+
+	if ctxt.Headtype == obj.Hnacl && p.Mode == 32 {
+		switch p.As {
+		case obj.ARET:
+			ctxt.AsmBuf.Put(naclret8)
+			return
+
+		case obj.ACALL,
+			obj.AJMP:
+			if p.To.Type == obj.TYPE_REG && REG_AX <= p.To.Reg && p.To.Reg <= REG_DI {
+				ctxt.AsmBuf.Put3(0x83, byte(0xe0|(p.To.Reg-REG_AX)), 0xe0)
+			}
+
+		case AINT:
+			ctxt.AsmBuf.Put1(0xf4)
+			return
+		}
+	}
+
+	if ctxt.Headtype == obj.Hnacl && p.Mode == 64 {
+		if p.As == AREP {
+			ctxt.Rep++
+			return
+		}
+
+		if p.As == AREPN {
+			ctxt.Repn++
+			return
+		}
+
+		if p.As == ALOCK {
+			ctxt.Lock++
+			return
+		}
+
+		if p.As != ALEAQ && p.As != ALEAL {
+			if p.From.Index != REG_NONE && p.From.Scale > 0 {
+				nacltrunc(ctxt, int(p.From.Index))
+			}
+			if p.To.Index != REG_NONE && p.To.Scale > 0 {
+				nacltrunc(ctxt, int(p.To.Index))
+			}
+		}
+
+		switch p.As {
+		case obj.ARET:
+			ctxt.AsmBuf.Put(naclret)
+			return
+
+		case obj.ACALL,
+			obj.AJMP:
+			if p.To.Type == obj.TYPE_REG && REG_AX <= p.To.Reg && p.To.Reg <= REG_DI {
+				// ANDL $~31, reg
+				ctxt.AsmBuf.Put3(0x83, byte(0xe0|(p.To.Reg-REG_AX)), 0xe0)
+				// ADDQ R15, reg
+				ctxt.AsmBuf.Put3(0x4c, 0x01, byte(0xf8|(p.To.Reg-REG_AX)))
+			}
+
+			if p.To.Type == obj.TYPE_REG && REG_R8 <= p.To.Reg && p.To.Reg <= REG_R15 {
+				// ANDL $~31, reg
+				ctxt.AsmBuf.Put4(0x41, 0x83, byte(0xe0|(p.To.Reg-REG_R8)), 0xe0)
+				// ADDQ R15, reg
+				ctxt.AsmBuf.Put3(0x4d, 0x01, byte(0xf8|(p.To.Reg-REG_R8)))
+			}
+
+		case AINT:
+			ctxt.AsmBuf.Put1(0xf4)
+			return
+
+		case ASCASB,
+			ASCASW,
+			ASCASL,
+			ASCASQ,
+			ASTOSB,
+			ASTOSW,
+			ASTOSL,
+			ASTOSQ:
+			ctxt.AsmBuf.Put(naclstos)
+
+		case AMOVSB, AMOVSW, AMOVSL, AMOVSQ:
+			ctxt.AsmBuf.Put(naclmovs)
+		}
+
+		if ctxt.Rep != 0 {
+			ctxt.AsmBuf.Put1(0xf3)
+			ctxt.Rep = 0
+		}
+
+		if ctxt.Repn != 0 {
+			ctxt.AsmBuf.Put1(0xf2)
+			ctxt.Repn = 0
+		}
+
+		if ctxt.Lock != 0 {
+			ctxt.AsmBuf.Put1(0xf0)
+			ctxt.Lock = 0
+		}
+	}
+
+	ctxt.Rexflag = 0
+	ctxt.Vexflag = 0
+	mark := ctxt.AsmBuf.Len()
+	ctxt.Asmode = int(p.Mode)
+	doasm(ctxt, p)
+	if ctxt.Rexflag != 0 && ctxt.Vexflag == 0 {
+		/*
+		 * as befits the whole approach of the architecture,
+		 * the rex prefix must appear before the first opcode byte
+		 * (and thus after any 66/67/f2/f3/26/2e/3e prefix bytes, but
+		 * before the 0f opcode escape!), or it might be ignored.
+		 * note that the handbook often misleadingly shows 66/f2/f3 in `opcode'.
+		 */
+		if p.Mode != 64 {
+			ctxt.Diag("asmins: illegal in mode %d: %v (%d %d)", p.Mode, p, p.Ft, p.Tt)
+		}
+		n := ctxt.AsmBuf.Len()
+		var np int
+		for np = mark; np < n; np++ {
+			c := ctxt.AsmBuf.Peek(np)
+			if c != 0xf2 && c != 0xf3 && (c < 0x64 || c > 0x67) && c != 0x2e && c != 0x3e && c != 0x26 {
+				break
+			}
+		}
+		ctxt.AsmBuf.Insert(np, byte(0x40|ctxt.Rexflag))
+	}
+
+	n := ctxt.AsmBuf.Len()
+	for i := len(ctxt.Cursym.R) - 1; i >= 0; i-- {
+		r := &ctxt.Cursym.R[i]
+		if int64(r.Off) < p.Pc {
+			break
+		}
+		if ctxt.Rexflag != 0 {
+			r.Off++
+		}
+		if r.Type == obj.R_PCREL {
+			if p.Mode == 64 || p.As == obj.AJMP || p.As == obj.ACALL {
+				// PC-relative addressing is relative to the end of the instruction,
+				// but the relocations applied by the linker are relative to the end
+				// of the relocation. Because immediate instruction
+				// arguments can follow the PC-relative memory reference in the
+				// instruction encoding, the two may not coincide. In this case,
+				// adjust addend so that linker can keep relocating relative to the
+				// end of the relocation.
+				r.Add -= p.Pc + int64(n) - (int64(r.Off) + int64(r.Siz))
+			} else if p.Mode == 32 {
+				// On 386 PC-relative addressing (for non-call/jmp instructions)
+				// assumes that the previous instruction loaded the PC of the end
+				// of that instruction into CX, so the adjustment is relative to
+				// that.
+				r.Add += int64(r.Off) - p.Pc + int64(r.Siz)
+			}
+		}
+		if r.Type == obj.R_GOTPCREL && p.Mode == 32 {
+			// On 386, R_GOTPCREL makes the same assumptions as R_PCREL.
+			r.Add += int64(r.Off) - p.Pc + int64(r.Siz)
+		}
+
+	}
+
+	if p.Mode == 64 && ctxt.Headtype == obj.Hnacl && p.As != ACMPL && p.As != ACMPQ && p.To.Type == obj.TYPE_REG {
+		switch p.To.Reg {
+		case REG_SP:
+			ctxt.AsmBuf.Put(naclspfix)
+		case REG_BP:
+			ctxt.AsmBuf.Put(naclbpfix)
+		}
+	}
+}
diff --git a/vendor/github.com/google/gops/internal/obj/x86/list6.go b/vendor/github.com/google/gops/internal/obj/x86/list6.go
new file mode 100644
index 00000000..48f2edd5
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/x86/list6.go
@@ -0,0 +1,181 @@
+// Inferno utils/6c/list.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6c/list.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package x86
+
+import (
+	"fmt"
+
+	"github.com/google/gops/internal/obj"
+)
+
+var Register = []string{
+	"AL", /* [D_AL] */
+	"CL",
+	"DL",
+	"BL",
+	"SPB",
+	"BPB",
+	"SIB",
+	"DIB",
+	"R8B",
+	"R9B",
+	"R10B",
+	"R11B",
+	"R12B",
+	"R13B",
+	"R14B",
+	"R15B",
+	"AX", /* [D_AX] */
+	"CX",
+	"DX",
+	"BX",
+	"SP",
+	"BP",
+	"SI",
+	"DI",
+	"R8",
+	"R9",
+	"R10",
+	"R11",
+	"R12",
+	"R13",
+	"R14",
+	"R15",
+	"AH",
+	"CH",
+	"DH",
+	"BH",
+	"F0", /* [D_F0] */
+	"F1",
+	"F2",
+	"F3",
+	"F4",
+	"F5",
+	"F6",
+	"F7",
+	"M0",
+	"M1",
+	"M2",
+	"M3",
+	"M4",
+	"M5",
+	"M6",
+	"M7",
+	"X0",
+	"X1",
+	"X2",
+	"X3",
+	"X4",
+	"X5",
+	"X6",
+	"X7",
+	"X8",
+	"X9",
+	"X10",
+	"X11",
+	"X12",
+	"X13",
+	"X14",
+	"X15",
+	"Y0",
+	"Y1",
+	"Y2",
+	"Y3",
+	"Y4",
+	"Y5",
+	"Y6",
+	"Y7",
+	"Y8",
+	"Y9",
+	"Y10",
+	"Y11",
+	"Y12",
+	"Y13",
+	"Y14",
+	"Y15",
+	"CS", /* [D_CS] */
+	"SS",
+	"DS",
+	"ES",
+	"FS",
+	"GS",
+	"GDTR", /* [D_GDTR] */
+	"IDTR", /* [D_IDTR] */
+	"LDTR", /* [D_LDTR] */
+	"MSW",  /* [D_MSW] */
+	"TASK", /* [D_TASK] */
+	"CR0",  /* [D_CR] */
+	"CR1",
+	"CR2",
+	"CR3",
+	"CR4",
+	"CR5",
+	"CR6",
+	"CR7",
+	"CR8",
+	"CR9",
+	"CR10",
+	"CR11",
+	"CR12",
+	"CR13",
+	"CR14",
+	"CR15",
+	"DR0", /* [D_DR] */
+	"DR1",
+	"DR2",
+	"DR3",
+	"DR4",
+	"DR5",
+	"DR6",
+	"DR7",
+	"TR0", /* [D_TR] */
+	"TR1",
+	"TR2",
+	"TR3",
+	"TR4",
+	"TR5",
+	"TR6",
+	"TR7",
+	"TLS",    /* [D_TLS] */
+	"MAXREG", /* [MAXREG] */
+}
+
+func init() {
+	obj.RegisterRegister(REG_AL, REG_AL+len(Register), Rconv)
+	obj.RegisterOpcode(obj.ABaseAMD64, Anames)
+}
+
+func Rconv(r int) string {
+	if REG_AL <= r && r-REG_AL < len(Register) {
+		return Register[r-REG_AL]
+	}
+	return fmt.Sprintf("Rgok(%d)", r-obj.RBaseAMD64)
+}
diff --git a/vendor/github.com/google/gops/internal/obj/x86/obj6.go b/vendor/github.com/google/gops/internal/obj/x86/obj6.go
new file mode 100644
index 00000000..aad950bb
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/x86/obj6.go
@@ -0,0 +1,1481 @@
+// Inferno utils/6l/pass.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/pass.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package x86
+
+import (
+	"fmt"
+	"log"
+	"math"
+	"strings"
+
+	"github.com/google/gops/internal/obj"
+	"github.com/google/gops/internal/sys"
+)
+
+func CanUse1InsnTLS(ctxt *obj.Link) bool {
+	if isAndroid {
+		// For android, we use a disgusting hack that assumes
+		// the thread-local storage slot for g is allocated
+		// using pthread_key_create with a fixed offset
+		// (see src/runtime/cgo/gcc_android_amd64.c).
+		// This makes access to the TLS storage (for g) doable
+		// with 1 instruction.
+		return true
+	}
+
+	if ctxt.Arch.RegSize == 4 {
+		switch ctxt.Headtype {
+		case obj.Hlinux,
+			obj.Hnacl,
+			obj.Hplan9,
+			obj.Hwindows,
+			obj.Hwindowsgui:
+			return false
+		}
+
+		return true
+	}
+
+	switch ctxt.Headtype {
+	case obj.Hplan9, obj.Hwindows, obj.Hwindowsgui:
+		return false
+	case obj.Hlinux:
+		return !ctxt.Flag_shared
+	}
+
+	return true
+}
+
+func progedit(ctxt *obj.Link, p *obj.Prog) {
+	// Maintain information about code generation mode.
+	if ctxt.Mode == 0 {
+		ctxt.Mode = ctxt.Arch.RegSize * 8
+	}
+	p.Mode = int8(ctxt.Mode)
+
+	switch p.As {
+	case AMODE:
+		if p.From.Type == obj.TYPE_CONST || (p.From.Type == obj.TYPE_MEM && p.From.Reg == REG_NONE) {
+			switch int(p.From.Offset) {
+			case 16, 32, 64:
+				ctxt.Mode = int(p.From.Offset)
+			}
+		}
+		obj.Nopout(p)
+	}
+
+	// Thread-local storage references use the TLS pseudo-register.
+	// As a register, TLS refers to the thread-local storage base, and it
+	// can only be loaded into another register:
+	//
+	//         MOVQ TLS, AX
+	//
+	// An offset from the thread-local storage base is written off(reg)(TLS*1).
+	// Semantically it is off(reg), but the (TLS*1) annotation marks this as
+	// indexing from the loaded TLS base. This emits a relocation so that
+	// if the linker needs to adjust the offset, it can. For example:
+	//
+	//         MOVQ TLS, AX
+	//         MOVQ 0(AX)(TLS*1), CX // load g into CX
+	//
+	// On systems that support direct access to the TLS memory, this
+	// pair of instructions can be reduced to a direct TLS memory reference:
+	//
+	//         MOVQ 0(TLS), CX // load g into CX
+	//
+	// The 2-instruction and 1-instruction forms correspond to the two code
+	// sequences for loading a TLS variable in the local exec model given in "ELF
+	// Handling For Thread-Local Storage".
+	//
+	// We apply this rewrite on systems that support the 1-instruction form.
+	// The decision is made using only the operating system and the -shared flag,
+	// not the link mode. If some link modes on a particular operating system
+	// require the 2-instruction form, then all builds for that operating system
+	// will use the 2-instruction form, so that the link mode decision can be
+	// delayed to link time.
+	//
+	// In this way, all supported systems use identical instructions to
+	// access TLS, and they are rewritten appropriately first here in
+	// liblink and then finally using relocations in the linker.
+	//
+	// When -shared is passed, we leave the code in the 2-instruction form but
+	// assemble (and relocate) them in different ways to generate the initial
+	// exec code sequence. It's a bit of a fluke that this is possible without
+	// rewriting the instructions more comprehensively, and it only does because
+	// we only support a single TLS variable (g).
+
+	if CanUse1InsnTLS(ctxt) {
+		// Reduce 2-instruction sequence to 1-instruction sequence.
+		// Sequences like
+		//	MOVQ TLS, BX
+		//	... off(BX)(TLS*1) ...
+		// become
+		//	NOP
+		//	... off(TLS) ...
+		//
+		// TODO(rsc): Remove the Hsolaris special case. It exists only to
+		// guarantee we are producing byte-identical binaries as before this code.
+		// But it should be unnecessary.
+		if (p.As == AMOVQ || p.As == AMOVL) && p.From.Type == obj.TYPE_REG && p.From.Reg == REG_TLS && p.To.Type == obj.TYPE_REG && REG_AX <= p.To.Reg && p.To.Reg <= REG_R15 && ctxt.Headtype != obj.Hsolaris {
+			obj.Nopout(p)
+		}
+		if p.From.Type == obj.TYPE_MEM && p.From.Index == REG_TLS && REG_AX <= p.From.Reg && p.From.Reg <= REG_R15 {
+			p.From.Reg = REG_TLS
+			p.From.Scale = 0
+			p.From.Index = REG_NONE
+		}
+
+		if p.To.Type == obj.TYPE_MEM && p.To.Index == REG_TLS && REG_AX <= p.To.Reg && p.To.Reg <= REG_R15 {
+			p.To.Reg = REG_TLS
+			p.To.Scale = 0
+			p.To.Index = REG_NONE
+		}
+	} else {
+		// load_g_cx, below, always inserts the 1-instruction sequence. Rewrite it
+		// as the 2-instruction sequence if necessary.
+		//	MOVQ 0(TLS), BX
+		// becomes
+		//	MOVQ TLS, BX
+		//	MOVQ 0(BX)(TLS*1), BX
+		if (p.As == AMOVQ || p.As == AMOVL) && p.From.Type == obj.TYPE_MEM && p.From.Reg == REG_TLS && p.To.Type == obj.TYPE_REG && REG_AX <= p.To.Reg && p.To.Reg <= REG_R15 {
+			q := obj.Appendp(ctxt, p)
+			q.As = p.As
+			q.From = p.From
+			q.From.Type = obj.TYPE_MEM
+			q.From.Reg = p.To.Reg
+			q.From.Index = REG_TLS
+			q.From.Scale = 2 // TODO: use 1
+			q.To = p.To
+			p.From.Type = obj.TYPE_REG
+			p.From.Reg = REG_TLS
+			p.From.Index = REG_NONE
+			p.From.Offset = 0
+		}
+	}
+
+	// TODO: Remove.
+	if (ctxt.Headtype == obj.Hwindows || ctxt.Headtype == obj.Hwindowsgui) && p.Mode == 64 || ctxt.Headtype == obj.Hplan9 {
+		if p.From.Scale == 1 && p.From.Index == REG_TLS {
+			p.From.Scale = 2
+		}
+		if p.To.Scale == 1 && p.To.Index == REG_TLS {
+			p.To.Scale = 2
+		}
+	}
+
+	// Rewrite 0 to $0 in 3rd argument to CMPPS etc.
+	// That's what the tables expect.
+	switch p.As {
+	case ACMPPD, ACMPPS, ACMPSD, ACMPSS:
+		if p.To.Type == obj.TYPE_MEM && p.To.Name == obj.NAME_NONE && p.To.Reg == REG_NONE && p.To.Index == REG_NONE && p.To.Sym == nil {
+			p.To.Type = obj.TYPE_CONST
+		}
+	}
+
+	// Rewrite CALL/JMP/RET to symbol as TYPE_BRANCH.
+	switch p.As {
+	case obj.ACALL, obj.AJMP, obj.ARET:
+		if p.To.Type == obj.TYPE_MEM && (p.To.Name == obj.NAME_EXTERN || p.To.Name == obj.NAME_STATIC) && p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+	}
+
+	// Rewrite MOVL/MOVQ $XXX(FP/SP) as LEAL/LEAQ.
+	if p.From.Type == obj.TYPE_ADDR && (ctxt.Arch.Family == sys.AMD64 || p.From.Name != obj.NAME_EXTERN && p.From.Name != obj.NAME_STATIC) {
+		switch p.As {
+		case AMOVL:
+			p.As = ALEAL
+			p.From.Type = obj.TYPE_MEM
+		case AMOVQ:
+			p.As = ALEAQ
+			p.From.Type = obj.TYPE_MEM
+		}
+	}
+
+	if ctxt.Headtype == obj.Hnacl && p.Mode == 64 {
+		if p.From3 != nil {
+			nacladdr(ctxt, p, p.From3)
+		}
+		nacladdr(ctxt, p, &p.From)
+		nacladdr(ctxt, p, &p.To)
+	}
+
+	// Rewrite float constants to values stored in memory.
+	switch p.As {
+	// Convert AMOVSS $(0), Xx to AXORPS Xx, Xx
+	case AMOVSS:
+		if p.From.Type == obj.TYPE_FCONST {
+			//  f == 0 can't be used here due to -0, so use Float64bits
+			if f := p.From.Val.(float64); math.Float64bits(f) == 0 {
+				if p.To.Type == obj.TYPE_REG && REG_X0 <= p.To.Reg && p.To.Reg <= REG_X15 {
+					p.As = AXORPS
+					p.From = p.To
+					break
+				}
+			}
+		}
+		fallthrough
+
+	case AFMOVF,
+		AFADDF,
+		AFSUBF,
+		AFSUBRF,
+		AFMULF,
+		AFDIVF,
+		AFDIVRF,
+		AFCOMF,
+		AFCOMFP,
+		AADDSS,
+		ASUBSS,
+		AMULSS,
+		ADIVSS,
+		ACOMISS,
+		AUCOMISS:
+		if p.From.Type == obj.TYPE_FCONST {
+			f32 := float32(p.From.Val.(float64))
+			i32 := math.Float32bits(f32)
+			literal := fmt.Sprintf("$f32.%08x", i32)
+			s := obj.Linklookup(ctxt, literal, 0)
+			p.From.Type = obj.TYPE_MEM
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Offset = 0
+		}
+
+	case AMOVSD:
+		// Convert AMOVSD $(0), Xx to AXORPS Xx, Xx
+		if p.From.Type == obj.TYPE_FCONST {
+			//  f == 0 can't be used here due to -0, so use Float64bits
+			if f := p.From.Val.(float64); math.Float64bits(f) == 0 {
+				if p.To.Type == obj.TYPE_REG && REG_X0 <= p.To.Reg && p.To.Reg <= REG_X15 {
+					p.As = AXORPS
+					p.From = p.To
+					break
+				}
+			}
+		}
+		fallthrough
+
+	case AFMOVD,
+		AFADDD,
+		AFSUBD,
+		AFSUBRD,
+		AFMULD,
+		AFDIVD,
+		AFDIVRD,
+		AFCOMD,
+		AFCOMDP,
+		AADDSD,
+		ASUBSD,
+		AMULSD,
+		ADIVSD,
+		ACOMISD,
+		AUCOMISD:
+		if p.From.Type == obj.TYPE_FCONST {
+			i64 := math.Float64bits(p.From.Val.(float64))
+			literal := fmt.Sprintf("$f64.%016x", i64)
+			s := obj.Linklookup(ctxt, literal, 0)
+			p.From.Type = obj.TYPE_MEM
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Sym = s
+			p.From.Sym.Set(obj.AttrLocal, true)
+			p.From.Offset = 0
+		}
+	}
+
+	if ctxt.Flag_dynlink {
+		rewriteToUseGot(ctxt, p)
+	}
+
+	if ctxt.Flag_shared && p.Mode == 32 {
+		rewriteToPcrel(ctxt, p)
+	}
+}
+
+// Rewrite p, if necessary, to access global data via the global offset table.
+func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog) {
+	var add, lea, mov obj.As
+	var reg int16
+	if p.Mode == 64 {
+		add = AADDQ
+		lea = ALEAQ
+		mov = AMOVQ
+		reg = REG_R15
+	} else {
+		add = AADDL
+		lea = ALEAL
+		mov = AMOVL
+		reg = REG_CX
+		if p.As == ALEAL && p.To.Reg != p.From.Reg && p.To.Reg != p.From.Index {
+			// Special case: clobber the destination register with
+			// the PC so we don't have to clobber CX.
+			// The SSA backend depends on CX not being clobbered across LEAL.
+			// See cmd/compile/internal/ssa/gen/386.rules (search for Flag_shared).
+			reg = p.To.Reg
+		}
+	}
+
+	if p.As == obj.ADUFFCOPY || p.As == obj.ADUFFZERO {
+		//     ADUFFxxx $offset
+		// becomes
+		//     $MOV runtime.duffxxx@GOT, $reg
+		//     $ADD $offset, $reg
+		//     CALL $reg
+		var sym *obj.LSym
+		if p.As == obj.ADUFFZERO {
+			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+		} else {
+			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+		}
+		offset := p.To.Offset
+		p.As = mov
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		p.From.Sym = sym
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = reg
+		p.To.Offset = 0
+		p.To.Sym = nil
+		p1 := obj.Appendp(ctxt, p)
+		p1.As = add
+		p1.From.Type = obj.TYPE_CONST
+		p1.From.Offset = offset
+		p1.To.Type = obj.TYPE_REG
+		p1.To.Reg = reg
+		p2 := obj.Appendp(ctxt, p1)
+		p2.As = obj.ACALL
+		p2.To.Type = obj.TYPE_REG
+		p2.To.Reg = reg
+	}
+
+	// We only care about global data: NAME_EXTERN means a global
+	// symbol in the Go sense, and p.Sym.Local is true for a few
+	// internally defined symbols.
+	if p.As == lea && p.From.Type == obj.TYPE_MEM && p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		// $LEA sym, Rx becomes $MOV $sym, Rx which will be rewritten below
+		p.As = mov
+		p.From.Type = obj.TYPE_ADDR
+	}
+	if p.From.Type == obj.TYPE_ADDR && p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		// $MOV $sym, Rx becomes $MOV sym@GOT, Rx
+		// $MOV $sym+<off>, Rx becomes $MOV sym@GOT, Rx; $LEA <off>(Rx), Rx
+		// On 386 only, more complicated things like PUSHL $sym become $MOV sym@GOT, CX; PUSHL CX
+		cmplxdest := false
+		pAs := p.As
+		var dest obj.Addr
+		if p.To.Type != obj.TYPE_REG || pAs != mov {
+			if p.Mode == 64 {
+				ctxt.Diag("do not know how to handle LEA-type insn to non-register in %v with -dynlink", p)
+			}
+			cmplxdest = true
+			dest = p.To
+			p.As = mov
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = reg
+			p.To.Sym = nil
+			p.To.Name = obj.NAME_NONE
+		}
+		p.From.Type = obj.TYPE_MEM
+		p.From.Name = obj.NAME_GOTREF
+		q := p
+		if p.From.Offset != 0 {
+			q = obj.Appendp(ctxt, p)
+			q.As = lea
+			q.From.Type = obj.TYPE_MEM
+			q.From.Reg = p.To.Reg
+			q.From.Offset = p.From.Offset
+			q.To = p.To
+			p.From.Offset = 0
+		}
+		if cmplxdest {
+			q = obj.Appendp(ctxt, q)
+			q.As = pAs
+			q.To = dest
+			q.From.Type = obj.TYPE_REG
+			q.From.Reg = reg
+		}
+	}
+	if p.From3 != nil && p.From3.Name == obj.NAME_EXTERN {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	var source *obj.Addr
+	// MOVx sym, Ry becomes $MOV sym@GOT, R15; MOVx (R15), Ry
+	// MOVx Ry, sym becomes $MOV sym@GOT, R15; MOVx Ry, (R15)
+	// An addition may be inserted between the two MOVs if there is an offset.
+	if p.From.Name == obj.NAME_EXTERN && !p.From.Sym.Local() {
+		if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+			ctxt.Diag("cannot handle NAME_EXTERN on both sides in %v with -dynlink", p)
+		}
+		source = &p.From
+	} else if p.To.Name == obj.NAME_EXTERN && !p.To.Sym.Local() {
+		source = &p.To
+	} else {
+		return
+	}
+	if p.As == obj.ACALL {
+		// When dynlinking on 386, almost any call might end up being a call
+		// to a PLT, so make sure the GOT pointer is loaded into BX.
+		// RegTo2 is set on the replacement call insn to stop it being
+		// processed when it is in turn passed to progedit.
+		if p.Mode == 64 || (p.To.Sym != nil && p.To.Sym.Local()) || p.RegTo2 != 0 {
+			return
+		}
+		p1 := obj.Appendp(ctxt, p)
+		p2 := obj.Appendp(ctxt, p1)
+
+		p1.As = ALEAL
+		p1.From.Type = obj.TYPE_MEM
+		p1.From.Name = obj.NAME_STATIC
+		p1.From.Sym = obj.Linklookup(ctxt, "_GLOBAL_OFFSET_TABLE_", 0)
+		p1.To.Type = obj.TYPE_REG
+		p1.To.Reg = REG_BX
+
+		p2.As = p.As
+		p2.Scond = p.Scond
+		p2.From = p.From
+		p2.From3 = p.From3
+		p2.Reg = p.Reg
+		p2.To = p.To
+		// p.To.Type was set to TYPE_BRANCH above, but that makes checkaddr
+		// in ../pass.go complain, so set it back to TYPE_MEM here, until p2
+		// itself gets passed to progedit.
+		p2.To.Type = obj.TYPE_MEM
+		p2.RegTo2 = 1
+
+		obj.Nopout(p)
+		return
+
+	}
+	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ARET || p.As == obj.AJMP {
+		return
+	}
+	if source.Type != obj.TYPE_MEM {
+		ctxt.Diag("don't know how to handle %v with -dynlink", p)
+	}
+	p1 := obj.Appendp(ctxt, p)
+	p2 := obj.Appendp(ctxt, p1)
+
+	p1.As = mov
+	p1.From.Type = obj.TYPE_MEM
+	p1.From.Sym = source.Sym
+	p1.From.Name = obj.NAME_GOTREF
+	p1.To.Type = obj.TYPE_REG
+	p1.To.Reg = reg
+
+	p2.As = p.As
+	p2.From = p.From
+	p2.To = p.To
+	if p.From.Name == obj.NAME_EXTERN {
+		p2.From.Reg = reg
+		p2.From.Name = obj.NAME_NONE
+		p2.From.Sym = nil
+	} else if p.To.Name == obj.NAME_EXTERN {
+		p2.To.Reg = reg
+		p2.To.Name = obj.NAME_NONE
+		p2.To.Sym = nil
+	} else {
+		return
+	}
+	obj.Nopout(p)
+}
+
+func rewriteToPcrel(ctxt *obj.Link, p *obj.Prog) {
+	// RegTo2 is set on the instructions we insert here so they don't get
+	// processed twice.
+	if p.RegTo2 != 0 {
+		return
+	}
+	if p.As == obj.ATEXT || p.As == obj.AFUNCDATA || p.As == obj.ACALL || p.As == obj.ARET || p.As == obj.AJMP {
+		return
+	}
+	// Any Prog (aside from the above special cases) with an Addr with Name ==
+	// NAME_EXTERN, NAME_STATIC or NAME_GOTREF has a CALL __x86.get_pc_thunk.XX
+	// inserted before it.
+	isName := func(a *obj.Addr) bool {
+		if a.Sym == nil || (a.Type != obj.TYPE_MEM && a.Type != obj.TYPE_ADDR) || a.Reg != 0 {
+			return false
+		}
+		if a.Sym.Type == obj.STLSBSS {
+			return false
+		}
+		return a.Name == obj.NAME_EXTERN || a.Name == obj.NAME_STATIC || a.Name == obj.NAME_GOTREF
+	}
+
+	if isName(&p.From) && p.From.Type == obj.TYPE_ADDR {
+		// Handle things like "MOVL $sym, (SP)" or "PUSHL $sym" by rewriting
+		// to "MOVL $sym, CX; MOVL CX, (SP)" or "MOVL $sym, CX; PUSHL CX"
+		// respectively.
+		if p.To.Type != obj.TYPE_REG {
+			q := obj.Appendp(ctxt, p)
+			q.As = p.As
+			q.From.Type = obj.TYPE_REG
+			q.From.Reg = REG_CX
+			q.To = p.To
+			p.As = AMOVL
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_CX
+			p.To.Sym = nil
+			p.To.Name = obj.NAME_NONE
+		}
+	}
+
+	if !isName(&p.From) && !isName(&p.To) && (p.From3 == nil || !isName(p.From3)) {
+		return
+	}
+	var dst int16 = REG_CX
+	if (p.As == ALEAL || p.As == AMOVL) && p.To.Reg != p.From.Reg && p.To.Reg != p.From.Index {
+		dst = p.To.Reg
+		// Why?  See the comment near the top of rewriteToUseGot above.
+		// AMOVLs might be introduced by the GOT rewrites.
+	}
+	q := obj.Appendp(ctxt, p)
+	q.RegTo2 = 1
+	r := obj.Appendp(ctxt, q)
+	r.RegTo2 = 1
+	q.As = obj.ACALL
+	q.To.Sym = obj.Linklookup(ctxt, "__x86.get_pc_thunk."+strings.ToLower(Rconv(int(dst))), 0)
+	q.To.Type = obj.TYPE_MEM
+	q.To.Name = obj.NAME_EXTERN
+	q.To.Sym.Set(obj.AttrLocal, true)
+	r.As = p.As
+	r.Scond = p.Scond
+	r.From = p.From
+	r.From3 = p.From3
+	r.Reg = p.Reg
+	r.To = p.To
+	if isName(&p.From) {
+		r.From.Reg = dst
+	}
+	if isName(&p.To) {
+		r.To.Reg = dst
+	}
+	if p.From3 != nil && isName(p.From3) {
+		r.From3.Reg = dst
+	}
+	obj.Nopout(p)
+}
+
+func nacladdr(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) {
+	if p.As == ALEAL || p.As == ALEAQ {
+		return
+	}
+
+	if a.Reg == REG_BP {
+		ctxt.Diag("invalid address: %v", p)
+		return
+	}
+
+	if a.Reg == REG_TLS {
+		a.Reg = REG_BP
+	}
+	if a.Type == obj.TYPE_MEM && a.Name == obj.NAME_NONE {
+		switch a.Reg {
+		// all ok
+		case REG_BP, REG_SP, REG_R15:
+			break
+
+		default:
+			if a.Index != REG_NONE {
+				ctxt.Diag("invalid address %v", p)
+			}
+			a.Index = a.Reg
+			if a.Index != REG_NONE {
+				a.Scale = 1
+			}
+			a.Reg = REG_R15
+		}
+	}
+}
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
+	if ctxt.Headtype == obj.Hplan9 && ctxt.Plan9privates == nil {
+		ctxt.Plan9privates = obj.Linklookup(ctxt, "_privates", 0)
+	}
+
+	ctxt.Cursym = cursym
+
+	if cursym.Text == nil || cursym.Text.Link == nil {
+		return
+	}
+
+	p := cursym.Text
+	autoffset := int32(p.To.Offset)
+	if autoffset < 0 {
+		autoffset = 0
+	}
+
+	var bpsize int
+	if p.Mode == 64 && ctxt.Framepointer_enabled && autoffset > 0 && p.From3.Offset&obj.NOFRAME == 0 {
+		// Make room for to save a base pointer. If autoffset == 0,
+		// this might do something special like a tail jump to
+		// another function, so in that case we omit this.
+		bpsize = ctxt.Arch.PtrSize
+		autoffset += int32(bpsize)
+		p.To.Offset += int64(bpsize)
+	} else {
+		bpsize = 0
+	}
+
+	textarg := int64(p.To.Val.(int32))
+	cursym.Args = int32(textarg)
+	cursym.Locals = int32(p.To.Offset)
+
+	// TODO(rsc): Remove.
+	if p.Mode == 32 && cursym.Locals < 0 {
+		cursym.Locals = 0
+	}
+
+	// TODO(rsc): Remove 'p.Mode == 64 &&'.
+	if p.Mode == 64 && autoffset < obj.StackSmall && p.From3Offset()&obj.NOSPLIT == 0 {
+		leaf := true
+	LeafSearch:
+		for q := p; q != nil; q = q.Link {
+			switch q.As {
+			case obj.ACALL:
+				// Treat common runtime calls that take no arguments
+				// the same as duffcopy and duffzero.
+				if !isZeroArgRuntimeCall(q.To.Sym) {
+					leaf = false
+					break LeafSearch
+				}
+				fallthrough
+			case obj.ADUFFCOPY, obj.ADUFFZERO:
+				if autoffset >= obj.StackSmall-8 {
+					leaf = false
+					break LeafSearch
+				}
+			}
+		}
+
+		if leaf {
+			p.From3.Offset |= obj.NOSPLIT
+		}
+	}
+
+	if p.From3Offset()&obj.NOSPLIT == 0 || p.From3Offset()&obj.WRAPPER != 0 {
+		p = obj.Appendp(ctxt, p)
+		p = load_g_cx(ctxt, p) // load g into CX
+	}
+
+	if cursym.Text.From3Offset()&obj.NOSPLIT == 0 {
+		p = stacksplit(ctxt, p, autoffset, int32(textarg)) // emit split check
+	}
+
+	if autoffset != 0 {
+		if autoffset%int32(ctxt.Arch.RegSize) != 0 {
+			ctxt.Diag("unaligned stack size %d", autoffset)
+		}
+		p = obj.Appendp(ctxt, p)
+		p.As = AADJSP
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(autoffset)
+		p.Spadj = autoffset
+	}
+
+	deltasp := autoffset
+
+	if bpsize > 0 {
+		// Save caller's BP
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AMOVQ
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_BP
+		p.To.Type = obj.TYPE_MEM
+		p.To.Reg = REG_SP
+		p.To.Scale = 1
+		p.To.Offset = int64(autoffset) - int64(bpsize)
+
+		// Move current frame to BP
+		p = obj.Appendp(ctxt, p)
+
+		p.As = ALEAQ
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REG_SP
+		p.From.Scale = 1
+		p.From.Offset = int64(autoffset) - int64(bpsize)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_BP
+	}
+
+	if cursym.Text.From3Offset()&obj.WRAPPER != 0 {
+		// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+		//
+		//	MOVQ g_panic(CX), BX
+		//	TESTQ BX, BX
+		//	JEQ end
+		//	LEAQ (autoffset+8)(SP), DI
+		//	CMPQ panic_argp(BX), DI
+		//	JNE end
+		//	MOVQ SP, panic_argp(BX)
+		// end:
+		//	NOP
+		//
+		// The NOP is needed to give the jumps somewhere to land.
+		// It is a liblink NOP, not an x86 NOP: it encodes to 0 instruction bytes.
+
+		p = obj.Appendp(ctxt, p)
+
+		p.As = AMOVQ
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REG_CX
+		p.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_BX
+		if ctxt.Headtype == obj.Hnacl && p.Mode == 64 {
+			p.As = AMOVL
+			p.From.Type = obj.TYPE_MEM
+			p.From.Reg = REG_R15
+			p.From.Scale = 1
+			p.From.Index = REG_CX
+		}
+		if p.Mode == 32 {
+			p.As = AMOVL
+		}
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ATESTQ
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_BX
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_BX
+		if ctxt.Headtype == obj.Hnacl || p.Mode == 32 {
+			p.As = ATESTL
+		}
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AJEQ
+		p.To.Type = obj.TYPE_BRANCH
+		p1 := p
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ALEAQ
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REG_SP
+		p.From.Offset = int64(autoffset) + int64(ctxt.Arch.RegSize)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_DI
+		if ctxt.Headtype == obj.Hnacl || p.Mode == 32 {
+			p.As = ALEAL
+		}
+
+		p = obj.Appendp(ctxt, p)
+		p.As = ACMPQ
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REG_BX
+		p.From.Offset = 0 // Panic.argp
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_DI
+		if ctxt.Headtype == obj.Hnacl && p.Mode == 64 {
+			p.As = ACMPL
+			p.From.Type = obj.TYPE_MEM
+			p.From.Reg = REG_R15
+			p.From.Scale = 1
+			p.From.Index = REG_BX
+		}
+		if p.Mode == 32 {
+			p.As = ACMPL
+		}
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AJNE
+		p.To.Type = obj.TYPE_BRANCH
+		p2 := p
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AMOVQ
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_SP
+		p.To.Type = obj.TYPE_MEM
+		p.To.Reg = REG_BX
+		p.To.Offset = 0 // Panic.argp
+		if ctxt.Headtype == obj.Hnacl && p.Mode == 64 {
+			p.As = AMOVL
+			p.To.Type = obj.TYPE_MEM
+			p.To.Reg = REG_R15
+			p.To.Scale = 1
+			p.To.Index = REG_BX
+		}
+		if p.Mode == 32 {
+			p.As = AMOVL
+		}
+
+		p = obj.Appendp(ctxt, p)
+		p.As = obj.ANOP
+		p1.Pcond = p
+		p2.Pcond = p
+	}
+
+	for ; p != nil; p = p.Link {
+		pcsize := int(p.Mode) / 8
+		switch p.From.Name {
+		case obj.NAME_AUTO:
+			p.From.Offset += int64(deltasp) - int64(bpsize)
+		case obj.NAME_PARAM:
+			p.From.Offset += int64(deltasp) + int64(pcsize)
+		}
+		if p.From3 != nil {
+			switch p.From3.Name {
+			case obj.NAME_AUTO:
+				p.From3.Offset += int64(deltasp) - int64(bpsize)
+			case obj.NAME_PARAM:
+				p.From3.Offset += int64(deltasp) + int64(pcsize)
+			}
+		}
+		switch p.To.Name {
+		case obj.NAME_AUTO:
+			p.To.Offset += int64(deltasp) - int64(bpsize)
+		case obj.NAME_PARAM:
+			p.To.Offset += int64(deltasp) + int64(pcsize)
+		}
+
+		switch p.As {
+		default:
+			continue
+
+		case APUSHL, APUSHFL:
+			deltasp += 4
+			p.Spadj = 4
+			continue
+
+		case APUSHQ, APUSHFQ:
+			deltasp += 8
+			p.Spadj = 8
+			continue
+
+		case APUSHW, APUSHFW:
+			deltasp += 2
+			p.Spadj = 2
+			continue
+
+		case APOPL, APOPFL:
+			deltasp -= 4
+			p.Spadj = -4
+			continue
+
+		case APOPQ, APOPFQ:
+			deltasp -= 8
+			p.Spadj = -8
+			continue
+
+		case APOPW, APOPFW:
+			deltasp -= 2
+			p.Spadj = -2
+			continue
+
+		case obj.ARET:
+			// do nothing
+		}
+
+		if autoffset != deltasp {
+			ctxt.Diag("unbalanced PUSH/POP")
+		}
+
+		if autoffset != 0 {
+			if bpsize > 0 {
+				// Restore caller's BP
+				p.As = AMOVQ
+
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REG_SP
+				p.From.Scale = 1
+				p.From.Offset = int64(autoffset) - int64(bpsize)
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REG_BP
+				p = obj.Appendp(ctxt, p)
+			}
+
+			p.As = AADJSP
+			p.From.Type = obj.TYPE_CONST
+			p.From.Offset = int64(-autoffset)
+			p.Spadj = -autoffset
+			p = obj.Appendp(ctxt, p)
+			p.As = obj.ARET
+
+			// If there are instructions following
+			// this ARET, they come from a branch
+			// with the same stackframe, so undo
+			// the cleanup.
+			p.Spadj = +autoffset
+		}
+
+		if p.To.Sym != nil { // retjmp
+			p.As = obj.AJMP
+		}
+	}
+}
+
+func isZeroArgRuntimeCall(s *obj.LSym) bool {
+	if s == nil {
+		return false
+	}
+	switch s.Name {
+	case "runtime.panicindex", "runtime.panicslice", "runtime.panicdivide":
+		return true
+	}
+	return false
+}
+
+func indir_cx(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) {
+	if ctxt.Headtype == obj.Hnacl && p.Mode == 64 {
+		a.Type = obj.TYPE_MEM
+		a.Reg = REG_R15
+		a.Index = REG_CX
+		a.Scale = 1
+		return
+	}
+
+	a.Type = obj.TYPE_MEM
+	a.Reg = REG_CX
+}
+
+// Append code to p to load g into cx.
+// Overwrites p with the first instruction (no first appendp).
+// Overwriting p is unusual but it lets use this in both the
+// prologue (caller must call appendp first) and in the epilogue.
+// Returns last new instruction.
+func load_g_cx(ctxt *obj.Link, p *obj.Prog) *obj.Prog {
+	p.As = AMOVQ
+	if ctxt.Arch.PtrSize == 4 {
+		p.As = AMOVL
+	}
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REG_TLS
+	p.From.Offset = 0
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_CX
+
+	next := p.Link
+	progedit(ctxt, p)
+	for p.Link != next {
+		p = p.Link
+	}
+
+	if p.From.Index == REG_TLS {
+		p.From.Scale = 2
+	}
+
+	return p
+}
+
+// Append code to p to check for stack split.
+// Appends to (does not overwrite) p.
+// Assumes g is in CX.
+// Returns last new instruction.
+func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32, textarg int32) *obj.Prog {
+	cmp := ACMPQ
+	lea := ALEAQ
+	mov := AMOVQ
+	sub := ASUBQ
+
+	if ctxt.Headtype == obj.Hnacl || p.Mode == 32 {
+		cmp = ACMPL
+		lea = ALEAL
+		mov = AMOVL
+		sub = ASUBL
+	}
+
+	var q1 *obj.Prog
+	if framesize <= obj.StackSmall {
+		// small stack: SP <= stackguard
+		//	CMPQ SP, stackguard
+		p = obj.Appendp(ctxt, p)
+
+		p.As = cmp
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_SP
+		indir_cx(ctxt, p, &p.To)
+		p.To.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+		if ctxt.Cursym.CFunc() {
+			p.To.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+		}
+	} else if framesize <= obj.StackBig {
+		// large stack: SP-framesize <= stackguard-StackSmall
+		//	LEAQ -xxx(SP), AX
+		//	CMPQ AX, stackguard
+		p = obj.Appendp(ctxt, p)
+
+		p.As = lea
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REG_SP
+		p.From.Offset = -(int64(framesize) - obj.StackSmall)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_AX
+
+		p = obj.Appendp(ctxt, p)
+		p.As = cmp
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_AX
+		indir_cx(ctxt, p, &p.To)
+		p.To.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+		if ctxt.Cursym.CFunc() {
+			p.To.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+		}
+	} else {
+		// Such a large stack we need to protect against wraparound.
+		// If SP is close to zero:
+		//	SP-stackguard+StackGuard <= framesize + (StackGuard-StackSmall)
+		// The +StackGuard on both sides is required to keep the left side positive:
+		// SP is allowed to be slightly below stackguard. See stack.h.
+		//
+		// Preemption sets stackguard to StackPreempt, a very large value.
+		// That breaks the math above, so we have to check for that explicitly.
+		//	MOVQ	stackguard, CX
+		//	CMPQ	CX, $StackPreempt
+		//	JEQ	label-of-call-to-morestack
+		//	LEAQ	StackGuard(SP), AX
+		//	SUBQ	CX, AX
+		//	CMPQ	AX, $(framesize+(StackGuard-StackSmall))
+
+		p = obj.Appendp(ctxt, p)
+
+		p.As = mov
+		indir_cx(ctxt, p, &p.From)
+		p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
+		if ctxt.Cursym.CFunc() {
+			p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
+		}
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_SI
+
+		p = obj.Appendp(ctxt, p)
+		p.As = cmp
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_SI
+		p.To.Type = obj.TYPE_CONST
+		p.To.Offset = obj.StackPreempt
+		if p.Mode == 32 {
+			p.To.Offset = int64(uint32(obj.StackPreempt & (1<<32 - 1)))
+		}
+
+		p = obj.Appendp(ctxt, p)
+		p.As = AJEQ
+		p.To.Type = obj.TYPE_BRANCH
+		q1 = p
+
+		p = obj.Appendp(ctxt, p)
+		p.As = lea
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = REG_SP
+		p.From.Offset = obj.StackGuard
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_AX
+
+		p = obj.Appendp(ctxt, p)
+		p.As = sub
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_SI
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_AX
+
+		p = obj.Appendp(ctxt, p)
+		p.As = cmp
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_AX
+		p.To.Type = obj.TYPE_CONST
+		p.To.Offset = int64(framesize) + (obj.StackGuard - obj.StackSmall)
+	}
+
+	// common
+	jls := obj.Appendp(ctxt, p)
+	jls.As = AJLS
+	jls.To.Type = obj.TYPE_BRANCH
+
+	var last *obj.Prog
+	for last = ctxt.Cursym.Text; last.Link != nil; last = last.Link {
+	}
+
+	// Now we are at the end of the function, but logically
+	// we are still in function prologue. We need to fix the
+	// SP data and PCDATA.
+	spfix := obj.Appendp(ctxt, last)
+	spfix.As = obj.ANOP
+	spfix.Spadj = -framesize
+
+	pcdata := obj.Appendp(ctxt, spfix)
+	pcdata.Lineno = ctxt.Cursym.Text.Lineno
+	pcdata.Mode = ctxt.Cursym.Text.Mode
+	pcdata.As = obj.APCDATA
+	pcdata.From.Type = obj.TYPE_CONST
+	pcdata.From.Offset = obj.PCDATA_StackMapIndex
+	pcdata.To.Type = obj.TYPE_CONST
+	pcdata.To.Offset = -1 // pcdata starts at -1 at function entry
+
+	call := obj.Appendp(ctxt, pcdata)
+	call.Lineno = ctxt.Cursym.Text.Lineno
+	call.Mode = ctxt.Cursym.Text.Mode
+	call.As = obj.ACALL
+	call.To.Type = obj.TYPE_BRANCH
+	call.To.Name = obj.NAME_EXTERN
+	morestack := "runtime.morestack"
+	switch {
+	case ctxt.Cursym.CFunc():
+		morestack = "runtime.morestackc"
+	case ctxt.Cursym.Text.From3Offset()&obj.NEEDCTXT == 0:
+		morestack = "runtime.morestack_noctxt"
+	}
+	call.To.Sym = obj.Linklookup(ctxt, morestack, 0)
+	// When compiling 386 code for dynamic linking, the call needs to be adjusted
+	// to follow PIC rules. This in turn can insert more instructions, so we need
+	// to keep track of the start of the call (where the jump will be to) and the
+	// end (which following instructions are appended to).
+	callend := call
+	progedit(ctxt, callend)
+	for ; callend.Link != nil; callend = callend.Link {
+		progedit(ctxt, callend.Link)
+	}
+
+	jmp := obj.Appendp(ctxt, callend)
+	jmp.As = obj.AJMP
+	jmp.To.Type = obj.TYPE_BRANCH
+	jmp.Pcond = ctxt.Cursym.Text.Link
+	jmp.Spadj = +framesize
+
+	jls.Pcond = call
+	if q1 != nil {
+		q1.Pcond = call
+	}
+
+	return jls
+}
+
+func follow(ctxt *obj.Link, s *obj.LSym) {
+	ctxt.Cursym = s
+
+	firstp := ctxt.NewProg()
+	lastp := firstp
+	xfol(ctxt, s.Text, &lastp)
+	lastp.Link = nil
+	s.Text = firstp.Link
+}
+
+func nofollow(a obj.As) bool {
+	switch a {
+	case obj.AJMP,
+		obj.ARET,
+		AIRETL,
+		AIRETQ,
+		AIRETW,
+		ARETFL,
+		ARETFQ,
+		ARETFW,
+		obj.AUNDEF:
+		return true
+	}
+
+	return false
+}
+
+func pushpop(a obj.As) bool {
+	switch a {
+	case APUSHL,
+		APUSHFL,
+		APUSHQ,
+		APUSHFQ,
+		APUSHW,
+		APUSHFW,
+		APOPL,
+		APOPFL,
+		APOPQ,
+		APOPFQ,
+		APOPW,
+		APOPFW:
+		return true
+	}
+
+	return false
+}
+
+func relinv(a obj.As) obj.As {
+	switch a {
+	case AJEQ:
+		return AJNE
+	case AJNE:
+		return AJEQ
+	case AJLE:
+		return AJGT
+	case AJLS:
+		return AJHI
+	case AJLT:
+		return AJGE
+	case AJMI:
+		return AJPL
+	case AJGE:
+		return AJLT
+	case AJPL:
+		return AJMI
+	case AJGT:
+		return AJLE
+	case AJHI:
+		return AJLS
+	case AJCS:
+		return AJCC
+	case AJCC:
+		return AJCS
+	case AJPS:
+		return AJPC
+	case AJPC:
+		return AJPS
+	case AJOS:
+		return AJOC
+	case AJOC:
+		return AJOS
+	}
+
+	log.Fatalf("unknown relation: %s", a)
+	return 0
+}
+
+func xfol(ctxt *obj.Link, p *obj.Prog, last **obj.Prog) {
+	var q *obj.Prog
+	var i int
+	var a obj.As
+
+loop:
+	if p == nil {
+		return
+	}
+	if p.As == obj.AJMP {
+		q = p.Pcond
+		if q != nil && q.As != obj.ATEXT {
+			/* mark instruction as done and continue layout at target of jump */
+			p.Mark |= DONE
+
+			p = q
+			if p.Mark&DONE == 0 {
+				goto loop
+			}
+		}
+	}
+
+	if p.Mark&DONE != 0 {
+		/*
+		 * p goes here, but already used it elsewhere.
+		 * copy up to 4 instructions or else branch to other copy.
+		 */
+		i = 0
+		q = p
+		for ; i < 4; i, q = i+1, q.Link {
+			if q == nil {
+				break
+			}
+			if q == *last {
+				break
+			}
+			a = q.As
+			if a == obj.ANOP {
+				i--
+				continue
+			}
+
+			if nofollow(a) || pushpop(a) {
+				break // NOTE(rsc): arm does goto copy
+			}
+			if q.Pcond == nil || q.Pcond.Mark&DONE != 0 {
+				continue
+			}
+			if a == obj.ACALL || a == ALOOP {
+				continue
+			}
+			for {
+				if p.As == obj.ANOP {
+					p = p.Link
+					continue
+				}
+
+				q = obj.Copyp(ctxt, p)
+				p = p.Link
+				q.Mark |= DONE
+				(*last).Link = q
+				*last = q
+				if q.As != a || q.Pcond == nil || q.Pcond.Mark&DONE != 0 {
+					continue
+				}
+
+				q.As = relinv(q.As)
+				p = q.Pcond
+				q.Pcond = q.Link
+				q.Link = p
+				xfol(ctxt, q.Link, last)
+				p = q.Link
+				if p.Mark&DONE != 0 {
+					return
+				}
+				goto loop
+				/* */
+			}
+		}
+		q = ctxt.NewProg()
+		q.As = obj.AJMP
+		q.Lineno = p.Lineno
+		q.To.Type = obj.TYPE_BRANCH
+		q.To.Offset = p.Pc
+		q.Pcond = p
+		p = q
+	}
+
+	/* emit p */
+	p.Mark |= DONE
+
+	(*last).Link = p
+	*last = p
+	a = p.As
+
+	/* continue loop with what comes after p */
+	if nofollow(a) {
+		return
+	}
+	if p.Pcond != nil && a != obj.ACALL {
+		/*
+		 * some kind of conditional branch.
+		 * recurse to follow one path.
+		 * continue loop on the other.
+		 */
+		q = obj.Brchain(ctxt, p.Pcond)
+		if q != nil {
+			p.Pcond = q
+		}
+		q = obj.Brchain(ctxt, p.Link)
+		if q != nil {
+			p.Link = q
+		}
+		if p.From.Type == obj.TYPE_CONST {
+			if p.From.Offset == 1 {
+				/*
+				 * expect conditional jump to be taken.
+				 * rewrite so that's the fall-through case.
+				 */
+				p.As = relinv(a)
+
+				q = p.Link
+				p.Link = p.Pcond
+				p.Pcond = q
+			}
+		} else {
+			q = p.Link
+			if q.Mark&DONE != 0 {
+				if a != ALOOP {
+					p.As = relinv(a)
+					p.Link = p.Pcond
+					p.Pcond = q
+				}
+			}
+		}
+
+		xfol(ctxt, p.Link, last)
+		if p.Pcond.Mark&DONE != 0 {
+			return
+		}
+		p = p.Pcond
+		goto loop
+	}
+
+	p = p.Link
+	goto loop
+}
+
+var unaryDst = map[obj.As]bool{
+	ABSWAPL:    true,
+	ABSWAPQ:    true,
+	ACMPXCHG8B: true,
+	ADECB:      true,
+	ADECL:      true,
+	ADECQ:      true,
+	ADECW:      true,
+	AINCB:      true,
+	AINCL:      true,
+	AINCQ:      true,
+	AINCW:      true,
+	ANEGB:      true,
+	ANEGL:      true,
+	ANEGQ:      true,
+	ANEGW:      true,
+	ANOTB:      true,
+	ANOTL:      true,
+	ANOTQ:      true,
+	ANOTW:      true,
+	APOPL:      true,
+	APOPQ:      true,
+	APOPW:      true,
+	ASETCC:     true,
+	ASETCS:     true,
+	ASETEQ:     true,
+	ASETGE:     true,
+	ASETGT:     true,
+	ASETHI:     true,
+	ASETLE:     true,
+	ASETLS:     true,
+	ASETLT:     true,
+	ASETMI:     true,
+	ASETNE:     true,
+	ASETOC:     true,
+	ASETOS:     true,
+	ASETPC:     true,
+	ASETPL:     true,
+	ASETPS:     true,
+	AFFREE:     true,
+	AFLDENV:    true,
+	AFSAVE:     true,
+	AFSTCW:     true,
+	AFSTENV:    true,
+	AFSTSW:     true,
+	AFXSAVE:    true,
+	AFXSAVE64:  true,
+	ASTMXCSR:   true,
+}
+
+var Linkamd64 = obj.LinkArch{
+	Arch:       sys.ArchAMD64,
+	Preprocess: preprocess,
+	Assemble:   span6,
+	Follow:     follow,
+	Progedit:   progedit,
+	UnaryDst:   unaryDst,
+}
+
+var Linkamd64p32 = obj.LinkArch{
+	Arch:       sys.ArchAMD64P32,
+	Preprocess: preprocess,
+	Assemble:   span6,
+	Follow:     follow,
+	Progedit:   progedit,
+	UnaryDst:   unaryDst,
+}
+
+var Link386 = obj.LinkArch{
+	Arch:       sys.Arch386,
+	Preprocess: preprocess,
+	Assemble:   span6,
+	Follow:     follow,
+	Progedit:   progedit,
+	UnaryDst:   unaryDst,
+}
diff --git a/vendor/github.com/google/gops/internal/obj/zbootstrap.go b/vendor/github.com/google/gops/internal/obj/zbootstrap.go
new file mode 100644
index 00000000..5ddb4e0d
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/zbootstrap.go
@@ -0,0 +1,15 @@
+// auto generated by go tool dist
+
+package obj
+
+import "runtime"
+
+const defaultGOROOT = `/Users/jbd/go`
+const defaultGO386 = `sse2`
+const defaultGOARM = `7`
+const defaultGOOS = runtime.GOOS
+const defaultGOARCH = runtime.GOARCH
+const defaultGO_EXTLINK_ENABLED = ``
+const version = `devel +4141054 Thu Nov 3 17:42:01 2016 +0000`
+const stackGuardMultiplier = 1
+const goexperiment = ``
diff --git a/vendor/github.com/google/gops/internal/objfile/disasm.go b/vendor/github.com/google/gops/internal/objfile/disasm.go
new file mode 100644
index 00000000..8af0c8f8
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/disasm.go
@@ -0,0 +1,283 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package objfile
+
+import (
+	"bufio"
+	"debug/gosym"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"regexp"
+	"sort"
+	"strings"
+	"text/tabwriter"
+
+	"golang.org/x/arch/arm/armasm"
+	"golang.org/x/arch/ppc64/ppc64asm"
+	"golang.org/x/arch/x86/x86asm"
+)
+
+// Disasm is a disassembler for a given File.
+type Disasm struct {
+	syms      []Sym            //symbols in file, sorted by address
+	pcln      Liner            // pcln table
+	text      []byte           // bytes of text segment (actual instructions)
+	textStart uint64           // start PC of text
+	textEnd   uint64           // end PC of text
+	goarch    string           // GOARCH string
+	disasm    disasmFunc       // disassembler function for goarch
+	byteOrder binary.ByteOrder // byte order for goarch
+}
+
+// Disasm returns a disassembler for the file f.
+func (f *File) Disasm() (*Disasm, error) {
+	syms, err := f.Symbols()
+	if err != nil {
+		return nil, err
+	}
+
+	pcln, err := f.PCLineTable()
+	if err != nil {
+		return nil, err
+	}
+
+	textStart, textBytes, err := f.Text()
+	if err != nil {
+		return nil, err
+	}
+
+	goarch := f.GOARCH()
+	disasm := disasms[goarch]
+	byteOrder := byteOrders[goarch]
+	if disasm == nil || byteOrder == nil {
+		return nil, fmt.Errorf("unsupported architecture")
+	}
+
+	// Filter out section symbols, overwriting syms in place.
+	keep := syms[:0]
+	for _, sym := range syms {
+		switch sym.Name {
+		case "runtime.text", "text", "_text", "runtime.etext", "etext", "_etext":
+			// drop
+		default:
+			keep = append(keep, sym)
+		}
+	}
+	syms = keep
+	d := &Disasm{
+		syms:      syms,
+		pcln:      pcln,
+		text:      textBytes,
+		textStart: textStart,
+		textEnd:   textStart + uint64(len(textBytes)),
+		goarch:    goarch,
+		disasm:    disasm,
+		byteOrder: byteOrder,
+	}
+
+	return d, nil
+}
+
+// lookup finds the symbol name containing addr.
+func (d *Disasm) lookup(addr uint64) (name string, base uint64) {
+	i := sort.Search(len(d.syms), func(i int) bool { return addr < d.syms[i].Addr })
+	if i > 0 {
+		s := d.syms[i-1]
+		if s.Addr != 0 && s.Addr <= addr && addr < s.Addr+uint64(s.Size) {
+			return s.Name, s.Addr
+		}
+	}
+	return "", 0
+}
+
+// base returns the final element in the path.
+// It works on both Windows and Unix paths,
+// regardless of host operating system.
+func base(path string) string {
+	path = path[strings.LastIndex(path, "/")+1:]
+	path = path[strings.LastIndex(path, `\`)+1:]
+	return path
+}
+
+// Print prints a disassembly of the file to w.
+// If filter is non-nil, the disassembly only includes functions with names matching filter.
+// The disassembly only includes functions that overlap the range [start, end).
+func (d *Disasm) Print(w io.Writer, filter *regexp.Regexp, start, end uint64) {
+	if start < d.textStart {
+		start = d.textStart
+	}
+	if end > d.textEnd {
+		end = d.textEnd
+	}
+	printed := false
+	bw := bufio.NewWriter(w)
+	for _, sym := range d.syms {
+		symStart := sym.Addr
+		symEnd := sym.Addr + uint64(sym.Size)
+		relocs := sym.Relocs
+		if sym.Code != 'T' && sym.Code != 't' ||
+			symStart < d.textStart ||
+			symEnd <= start || end <= symStart ||
+			filter != nil && !filter.MatchString(sym.Name) {
+			continue
+		}
+		if printed {
+			fmt.Fprintf(bw, "\n")
+		}
+		printed = true
+
+		file, _, _ := d.pcln.PCToLine(sym.Addr)
+		fmt.Fprintf(bw, "TEXT %s(SB) %s\n", sym.Name, file)
+
+		tw := tabwriter.NewWriter(bw, 1, 8, 1, '\t', 0)
+		if symEnd > end {
+			symEnd = end
+		}
+		code := d.text[:end-d.textStart]
+		d.Decode(symStart, symEnd, relocs, func(pc, size uint64, file string, line int, text string) {
+			i := pc - d.textStart
+			fmt.Fprintf(tw, "\t%s:%d\t%#x\t", base(file), line, pc)
+			if size%4 != 0 || d.goarch == "386" || d.goarch == "amd64" {
+				// Print instruction as bytes.
+				fmt.Fprintf(tw, "%x", code[i:i+size])
+			} else {
+				// Print instruction as 32-bit words.
+				for j := uint64(0); j < size; j += 4 {
+					if j > 0 {
+						fmt.Fprintf(tw, " ")
+					}
+					fmt.Fprintf(tw, "%08x", d.byteOrder.Uint32(code[i+j:]))
+				}
+			}
+			fmt.Fprintf(tw, "\t%s\n", text)
+		})
+		tw.Flush()
+	}
+	bw.Flush()
+}
+
+// Decode disassembles the text segment range [start, end), calling f for each instruction.
+func (d *Disasm) Decode(start, end uint64, relocs []Reloc, f func(pc, size uint64, file string, line int, text string)) {
+	if start < d.textStart {
+		start = d.textStart
+	}
+	if end > d.textEnd {
+		end = d.textEnd
+	}
+	code := d.text[:end-d.textStart]
+	lookup := d.lookup
+	for pc := start; pc < end; {
+		i := pc - d.textStart
+		text, size := d.disasm(code[i:], pc, lookup, d.byteOrder)
+		file, line, _ := d.pcln.PCToLine(pc)
+		text += "\t"
+		first := true
+		for len(relocs) > 0 && relocs[0].Addr < i+uint64(size) {
+			if first {
+				first = false
+			} else {
+				text += " "
+			}
+			text += relocs[0].Stringer.String(pc - start)
+			relocs = relocs[1:]
+		}
+		f(pc, uint64(size), file, line, text)
+		pc += uint64(size)
+	}
+}
+
+type lookupFunc func(addr uint64) (sym string, base uint64)
+type disasmFunc func(code []byte, pc uint64, lookup lookupFunc, ord binary.ByteOrder) (text string, size int)
+
+func disasm_386(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder) (string, int) {
+	return disasm_x86(code, pc, lookup, 32)
+}
+
+func disasm_amd64(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder) (string, int) {
+	return disasm_x86(code, pc, lookup, 64)
+}
+
+func disasm_x86(code []byte, pc uint64, lookup lookupFunc, arch int) (string, int) {
+	inst, err := x86asm.Decode(code, 64)
+	var text string
+	size := inst.Len
+	if err != nil || size == 0 || inst.Op == 0 {
+		size = 1
+		text = "?"
+	} else {
+		text = x86asm.GoSyntax(inst, pc, lookup)
+	}
+	return text, size
+}
+
+type textReader struct {
+	code []byte
+	pc   uint64
+}
+
+func (r textReader) ReadAt(data []byte, off int64) (n int, err error) {
+	if off < 0 || uint64(off) < r.pc {
+		return 0, io.EOF
+	}
+	d := uint64(off) - r.pc
+	if d >= uint64(len(r.code)) {
+		return 0, io.EOF
+	}
+	n = copy(data, r.code[d:])
+	if n < len(data) {
+		err = io.ErrUnexpectedEOF
+	}
+	return
+}
+
+func disasm_arm(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder) (string, int) {
+	inst, err := armasm.Decode(code, armasm.ModeARM)
+	var text string
+	size := inst.Len
+	if err != nil || size == 0 || inst.Op == 0 {
+		size = 4
+		text = "?"
+	} else {
+		text = armasm.GoSyntax(inst, pc, lookup, textReader{code, pc})
+	}
+	return text, size
+}
+
+func disasm_ppc64(code []byte, pc uint64, lookup lookupFunc, byteOrder binary.ByteOrder) (string, int) {
+	inst, err := ppc64asm.Decode(code, byteOrder)
+	var text string
+	size := inst.Len
+	if err != nil || size == 0 || inst.Op == 0 {
+		size = 4
+		text = "?"
+	} else {
+		text = ppc64asm.GoSyntax(inst, pc, lookup)
+	}
+	return text, size
+}
+
+var disasms = map[string]disasmFunc{
+	"386":     disasm_386,
+	"amd64":   disasm_amd64,
+	"arm":     disasm_arm,
+	"ppc64":   disasm_ppc64,
+	"ppc64le": disasm_ppc64,
+}
+
+var byteOrders = map[string]binary.ByteOrder{
+	"386":     binary.LittleEndian,
+	"amd64":   binary.LittleEndian,
+	"arm":     binary.LittleEndian,
+	"ppc64":   binary.BigEndian,
+	"ppc64le": binary.LittleEndian,
+	"s390x":   binary.BigEndian,
+}
+
+type Liner interface {
+	// Given a pc, returns the corresponding file, line, and function data.
+	// If unknown, returns "",0,nil.
+	PCToLine(uint64) (string, int, *gosym.Func)
+}
diff --git a/vendor/github.com/google/gops/internal/objfile/elf.go b/vendor/github.com/google/gops/internal/objfile/elf.go
new file mode 100644
index 00000000..4ab7e6de
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/elf.go
@@ -0,0 +1,124 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Parsing of ELF executables (Linux, FreeBSD, and so on).
+
+package objfile
+
+import (
+	"debug/dwarf"
+	"debug/elf"
+	"encoding/binary"
+	"fmt"
+	"os"
+)
+
+type elfFile struct {
+	elf *elf.File
+}
+
+func openElf(r *os.File) (rawFile, error) {
+	f, err := elf.NewFile(r)
+	if err != nil {
+		return nil, err
+	}
+	return &elfFile{f}, nil
+}
+
+func (f *elfFile) symbols() ([]Sym, error) {
+	elfSyms, err := f.elf.Symbols()
+	if err != nil {
+		return nil, err
+	}
+
+	var syms []Sym
+	for _, s := range elfSyms {
+		sym := Sym{Addr: s.Value, Name: s.Name, Size: int64(s.Size), Code: '?'}
+		switch s.Section {
+		case elf.SHN_UNDEF:
+			sym.Code = 'U'
+		case elf.SHN_COMMON:
+			sym.Code = 'B'
+		default:
+			i := int(s.Section)
+			if i < 0 || i >= len(f.elf.Sections) {
+				break
+			}
+			sect := f.elf.Sections[i]
+			switch sect.Flags & (elf.SHF_WRITE | elf.SHF_ALLOC | elf.SHF_EXECINSTR) {
+			case elf.SHF_ALLOC | elf.SHF_EXECINSTR:
+				sym.Code = 'T'
+			case elf.SHF_ALLOC:
+				sym.Code = 'R'
+			case elf.SHF_ALLOC | elf.SHF_WRITE:
+				sym.Code = 'D'
+			}
+		}
+		if elf.ST_BIND(s.Info) == elf.STB_LOCAL {
+			sym.Code += 'a' - 'A'
+		}
+		syms = append(syms, sym)
+	}
+
+	return syms, nil
+}
+
+func (f *elfFile) pcln() (textStart uint64, symtab, pclntab []byte, err error) {
+	if sect := f.elf.Section(".text"); sect != nil {
+		textStart = sect.Addr
+	}
+	if sect := f.elf.Section(".gosymtab"); sect != nil {
+		if symtab, err = sect.Data(); err != nil {
+			return 0, nil, nil, err
+		}
+	}
+	if sect := f.elf.Section(".gopclntab"); sect != nil {
+		if pclntab, err = sect.Data(); err != nil {
+			return 0, nil, nil, err
+		}
+	}
+	return textStart, symtab, pclntab, nil
+}
+
+func (f *elfFile) text() (textStart uint64, text []byte, err error) {
+	sect := f.elf.Section(".text")
+	if sect == nil {
+		return 0, nil, fmt.Errorf("text section not found")
+	}
+	textStart = sect.Addr
+	text, err = sect.Data()
+	return
+}
+
+func (f *elfFile) goarch() string {
+	switch f.elf.Machine {
+	case elf.EM_386:
+		return "386"
+	case elf.EM_X86_64:
+		return "amd64"
+	case elf.EM_ARM:
+		return "arm"
+	case elf.EM_PPC64:
+		if f.elf.ByteOrder == binary.LittleEndian {
+			return "ppc64le"
+		}
+		return "ppc64"
+	case elf.EM_S390:
+		return "s390x"
+	}
+	return ""
+}
+
+func (f *elfFile) loadAddress() (uint64, error) {
+	for _, p := range f.elf.Progs {
+		if p.Type == elf.PT_LOAD {
+			return p.Vaddr, nil
+		}
+	}
+	return 0, fmt.Errorf("unknown load address")
+}
+
+func (f *elfFile) dwarf() (*dwarf.Data, error) {
+	return f.elf.DWARF()
+}
diff --git a/vendor/github.com/google/gops/internal/objfile/goobj.go b/vendor/github.com/google/gops/internal/objfile/goobj.go
new file mode 100644
index 00000000..5a8ec53d
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/goobj.go
@@ -0,0 +1,160 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Parsing of Go intermediate object files and archives.
+
+package objfile
+
+/*
+
+
+import (
+	"debug/dwarf"
+	"debug/gosym"
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/google/gops/internal/sys"
+
+	"github.com/google/gops/internal/goobj"
+)
+
+type goobjFile struct {
+	goobj *goobj.Package
+	f     *os.File // the underlying .o or .a file
+}
+
+func openGoobj(r *os.File) (rawFile, error) {
+	f, err := goobj.Parse(r, `""`)
+	if err != nil {
+		return nil, err
+	}
+	return &goobjFile{goobj: f, f: r}, nil
+}
+
+func goobjName(id goobj.SymID) string {
+	if id.Version == 0 {
+		return id.Name
+	}
+	return fmt.Sprintf("%s<%d>", id.Name, id.Version)
+}
+
+func (f *goobjFile) symbols() ([]Sym, error) {
+	seen := make(map[goobj.SymID]bool)
+
+	var syms []Sym
+	for _, s := range f.goobj.Syms {
+		seen[s.SymID] = true
+		sym := Sym{Addr: uint64(s.Data.Offset), Name: goobjName(s.SymID), Size: int64(s.Size), Type: s.Type.Name, Code: '?'}
+		switch s.Kind {
+		case goobj.STEXT, goobj.SELFRXSECT:
+			sym.Code = 'T'
+		case goobj.STYPE, goobj.SSTRING, goobj.SGOSTRING, goobj.SGOFUNC, goobj.SRODATA, goobj.SFUNCTAB, goobj.STYPELINK, goobj.SITABLINK, goobj.SSYMTAB, goobj.SPCLNTAB, goobj.SELFROSECT:
+			sym.Code = 'R'
+		case goobj.SMACHOPLT, goobj.SELFSECT, goobj.SMACHO, goobj.SMACHOGOT, goobj.SNOPTRDATA, goobj.SINITARR, goobj.SDATA, goobj.SWINDOWS:
+			sym.Code = 'D'
+		case goobj.SBSS, goobj.SNOPTRBSS, goobj.STLSBSS:
+			sym.Code = 'B'
+		case goobj.SXREF, goobj.SMACHOSYMSTR, goobj.SMACHOSYMTAB, goobj.SMACHOINDIRECTPLT, goobj.SMACHOINDIRECTGOT, goobj.SFILE, goobj.SFILEPATH, goobj.SCONST, goobj.SDYNIMPORT, goobj.SHOSTOBJ:
+			sym.Code = 'X' // should not see
+		}
+		if s.Version != 0 {
+			sym.Code += 'a' - 'A'
+		}
+		for i, r := range s.Reloc {
+			sym.Relocs = append(sym.Relocs, Reloc{Addr: uint64(s.Data.Offset) + uint64(r.Offset), Size: uint64(r.Size), Stringer: &s.Reloc[i]})
+		}
+		syms = append(syms, sym)
+	}
+
+	for _, s := range f.goobj.Syms {
+		for _, r := range s.Reloc {
+			if !seen[r.Sym] {
+				seen[r.Sym] = true
+				sym := Sym{Name: goobjName(r.Sym), Code: 'U'}
+				if s.Version != 0 {
+					// should not happen but handle anyway
+					sym.Code = 'u'
+				}
+				syms = append(syms, sym)
+			}
+		}
+	}
+
+	return syms, nil
+}
+
+func (f *goobjFile) pcln() (textStart uint64, symtab, pclntab []byte, err error) {
+	// Should never be called.  We implement Liner below, callers
+	// should use that instead.
+	return 0, nil, nil, fmt.Errorf("pcln not available in go object file")
+}
+
+// Find returns the file name, line, and function data for the given pc.
+// Returns "",0,nil if unknown.
+// This function implements the Liner interface in preference to pcln() above.
+func (f *goobjFile) PCToLine(pc uint64) (string, int, *gosym.Func) {
+	// TODO: this is really inefficient.  Binary search?  Memoize last result?
+	var arch *sys.Arch
+	for _, a := range sys.Archs {
+		if a.Name == f.goobj.Arch {
+			arch = a
+			break
+		}
+	}
+	if arch == nil {
+		return "", 0, nil
+	}
+	for _, s := range f.goobj.Syms {
+		if pc < uint64(s.Data.Offset) || pc >= uint64(s.Data.Offset+s.Data.Size) {
+			continue
+		}
+		if s.Func == nil {
+			return "", 0, nil
+		}
+		pcfile := make([]byte, s.Func.PCFile.Size)
+		_, err := f.f.ReadAt(pcfile, s.Func.PCFile.Offset)
+		if err != nil {
+			return "", 0, nil
+		}
+		fileID := gosym.PCValue(pcfile, pc-uint64(s.Data.Offset), arch.MinLC)
+		fileName := s.Func.File[fileID]
+		pcline := make([]byte, s.Func.PCLine.Size)
+		_, err = f.f.ReadAt(pcline, s.Func.PCLine.Offset)
+		if err != nil {
+			return "", 0, nil
+		}
+		line := gosym.PCValue(pcline, pc-uint64(s.Data.Offset), arch.MinLC)
+		// Note: we provide only the name in the Func structure.
+		// We could provide more if needed.
+		return fileName, line, &gosym.Func{Sym: &gosym.Sym{Name: s.Name}}
+	}
+	return "", 0, nil
+}
+
+// We treat the whole object file as the text section.
+func (f *goobjFile) text() (textStart uint64, text []byte, err error) {
+	var info os.FileInfo
+	info, err = f.f.Stat()
+	if err != nil {
+		return
+	}
+	text = make([]byte, info.Size())
+	_, err = f.f.ReadAt(text, 0)
+	return
+}
+
+func (f *goobjFile) goarch() string {
+	return f.goobj.Arch
+}
+
+func (f *goobjFile) loadAddress() (uint64, error) {
+	return 0, fmt.Errorf("unknown load address")
+}
+
+func (f *goobjFile) dwarf() (*dwarf.Data, error) {
+	return nil, errors.New("no DWARF data in go object file")
+}
+*/
diff --git a/vendor/github.com/google/gops/internal/objfile/macho.go b/vendor/github.com/google/gops/internal/objfile/macho.go
new file mode 100644
index 00000000..1d22a09b
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/macho.go
@@ -0,0 +1,134 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Parsing of Mach-O executables (OS X).
+
+package objfile
+
+import (
+	"debug/dwarf"
+	"debug/macho"
+	"fmt"
+	"os"
+	"sort"
+)
+
+const stabTypeMask = 0xe0
+
+type machoFile struct {
+	macho *macho.File
+}
+
+func openMacho(r *os.File) (rawFile, error) {
+	f, err := macho.NewFile(r)
+	if err != nil {
+		return nil, err
+	}
+	return &machoFile{f}, nil
+}
+
+func (f *machoFile) symbols() ([]Sym, error) {
+	if f.macho.Symtab == nil {
+		return nil, fmt.Errorf("missing symbol table")
+	}
+
+	// Build sorted list of addresses of all symbols.
+	// We infer the size of a symbol by looking at where the next symbol begins.
+	var addrs []uint64
+	for _, s := range f.macho.Symtab.Syms {
+		// Skip stab debug info.
+		if s.Type&stabTypeMask == 0 {
+			addrs = append(addrs, s.Value)
+		}
+	}
+	sort.Sort(uint64s(addrs))
+
+	var syms []Sym
+	for _, s := range f.macho.Symtab.Syms {
+		if s.Type&stabTypeMask != 0 {
+			// Skip stab debug info.
+			continue
+		}
+		sym := Sym{Name: s.Name, Addr: s.Value, Code: '?'}
+		i := sort.Search(len(addrs), func(x int) bool { return addrs[x] > s.Value })
+		if i < len(addrs) {
+			sym.Size = int64(addrs[i] - s.Value)
+		}
+		if s.Sect == 0 {
+			sym.Code = 'U'
+		} else if int(s.Sect) <= len(f.macho.Sections) {
+			sect := f.macho.Sections[s.Sect-1]
+			switch sect.Seg {
+			case "__TEXT":
+				sym.Code = 'R'
+			case "__DATA":
+				sym.Code = 'D'
+			}
+			switch sect.Seg + " " + sect.Name {
+			case "__TEXT __text":
+				sym.Code = 'T'
+			case "__DATA __bss", "__DATA __noptrbss":
+				sym.Code = 'B'
+			}
+		}
+		syms = append(syms, sym)
+	}
+
+	return syms, nil
+}
+
+func (f *machoFile) pcln() (textStart uint64, symtab, pclntab []byte, err error) {
+	if sect := f.macho.Section("__text"); sect != nil {
+		textStart = sect.Addr
+	}
+	if sect := f.macho.Section("__gosymtab"); sect != nil {
+		if symtab, err = sect.Data(); err != nil {
+			return 0, nil, nil, err
+		}
+	}
+	if sect := f.macho.Section("__gopclntab"); sect != nil {
+		if pclntab, err = sect.Data(); err != nil {
+			return 0, nil, nil, err
+		}
+	}
+	return textStart, symtab, pclntab, nil
+}
+
+func (f *machoFile) text() (textStart uint64, text []byte, err error) {
+	sect := f.macho.Section("__text")
+	if sect == nil {
+		return 0, nil, fmt.Errorf("text section not found")
+	}
+	textStart = sect.Addr
+	text, err = sect.Data()
+	return
+}
+
+func (f *machoFile) goarch() string {
+	switch f.macho.Cpu {
+	case macho.Cpu386:
+		return "386"
+	case macho.CpuAmd64:
+		return "amd64"
+	case macho.CpuArm:
+		return "arm"
+	case macho.CpuPpc64:
+		return "ppc64"
+	}
+	return ""
+}
+
+type uint64s []uint64
+
+func (x uint64s) Len() int           { return len(x) }
+func (x uint64s) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+func (x uint64s) Less(i, j int) bool { return x[i] < x[j] }
+
+func (f *machoFile) loadAddress() (uint64, error) {
+	return 0, fmt.Errorf("unknown load address")
+}
+
+func (f *machoFile) dwarf() (*dwarf.Data, error) {
+	return f.macho.DWARF()
+}
diff --git a/vendor/github.com/google/gops/internal/objfile/objfile.go b/vendor/github.com/google/gops/internal/objfile/objfile.go
new file mode 100644
index 00000000..a884a20d
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/objfile.go
@@ -0,0 +1,129 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package objfile implements portable access to OS-specific executable files.
+package objfile
+
+import (
+	"debug/dwarf"
+	"debug/gosym"
+	"fmt"
+	"os"
+	"sort"
+)
+
+type rawFile interface {
+	symbols() (syms []Sym, err error)
+	pcln() (textStart uint64, symtab, pclntab []byte, err error)
+	text() (textStart uint64, text []byte, err error)
+	goarch() string
+	loadAddress() (uint64, error)
+	dwarf() (*dwarf.Data, error)
+}
+
+// A File is an opened executable file.
+type File struct {
+	r   *os.File
+	raw rawFile
+}
+
+// A Sym is a symbol defined in an executable file.
+type Sym struct {
+	Name   string  // symbol name
+	Addr   uint64  // virtual address of symbol
+	Size   int64   // size in bytes
+	Code   rune    // nm code (T for text, D for data, and so on)
+	Type   string  // XXX?
+	Relocs []Reloc // in increasing Addr order
+}
+
+type Reloc struct {
+	Addr     uint64 // Address of first byte that reloc applies to.
+	Size     uint64 // Number of bytes
+	Stringer RelocStringer
+}
+
+type RelocStringer interface {
+	// insnOffset is the offset of the instruction containing the relocation
+	// from the start of the symbol containing the relocation.
+	String(insnOffset uint64) string
+}
+
+var openers = []func(*os.File) (rawFile, error){
+	openElf,
+	// openGoobj, // TODO(jbd): Bring it back when 1.8 is popular.
+	openMacho,
+	openPE,
+	openPlan9,
+}
+
+// Open opens the named file.
+// The caller must call f.Close when the file is no longer needed.
+func Open(name string) (*File, error) {
+	r, err := os.Open(name)
+	if err != nil {
+		return nil, err
+	}
+	for _, try := range openers {
+		if raw, err := try(r); err == nil {
+			return &File{r, raw}, nil
+		}
+	}
+	r.Close()
+	return nil, fmt.Errorf("open %s: unrecognized object file", name)
+}
+
+func (f *File) Close() error {
+	return f.r.Close()
+}
+
+func (f *File) Symbols() ([]Sym, error) {
+	syms, err := f.raw.symbols()
+	if err != nil {
+		return nil, err
+	}
+	sort.Sort(byAddr(syms))
+	return syms, nil
+}
+
+type byAddr []Sym
+
+func (x byAddr) Less(i, j int) bool { return x[i].Addr < x[j].Addr }
+func (x byAddr) Len() int           { return len(x) }
+func (x byAddr) Swap(i, j int)      { x[i], x[j] = x[j], x[i] }
+
+func (f *File) PCLineTable() (Liner, error) {
+	// If the raw file implements Liner directly, use that.
+	// Currently, only Go intermediate objects and archives (goobj) use this path.
+	if pcln, ok := f.raw.(Liner); ok {
+		return pcln, nil
+	}
+	// Otherwise, read the pcln tables and build a Liner out of that.
+	textStart, symtab, pclntab, err := f.raw.pcln()
+	if err != nil {
+		return nil, err
+	}
+	return gosym.NewTable(symtab, gosym.NewLineTable(pclntab, textStart))
+}
+
+func (f *File) Text() (uint64, []byte, error) {
+	return f.raw.text()
+}
+
+func (f *File) GOARCH() string {
+	return f.raw.goarch()
+}
+
+// LoadAddress returns the expected load address of the file.
+// This differs from the actual load address for a position-independent
+// executable.
+func (f *File) LoadAddress() (uint64, error) {
+	return f.raw.loadAddress()
+}
+
+// DWARF returns DWARF debug data for the file, if any.
+// This is for cmd/pprof to locate cgo functions.
+func (f *File) DWARF() (*dwarf.Data, error) {
+	return f.raw.dwarf()
+}
diff --git a/vendor/github.com/google/gops/internal/objfile/pe.go b/vendor/github.com/google/gops/internal/objfile/pe.go
new file mode 100644
index 00000000..46b23172
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/pe.go
@@ -0,0 +1,208 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Parsing of PE executables (Microsoft Windows).
+
+package objfile
+
+import (
+	"debug/dwarf"
+	"debug/pe"
+	"fmt"
+	"os"
+	"sort"
+)
+
+type peFile struct {
+	pe *pe.File
+}
+
+func openPE(r *os.File) (rawFile, error) {
+	f, err := pe.NewFile(r)
+	if err != nil {
+		return nil, err
+	}
+	switch f.OptionalHeader.(type) {
+	case *pe.OptionalHeader32, *pe.OptionalHeader64:
+		// ok
+	default:
+		return nil, fmt.Errorf("unrecognized PE format")
+	}
+	return &peFile{f}, nil
+}
+
+func (f *peFile) symbols() ([]Sym, error) {
+	// Build sorted list of addresses of all symbols.
+	// We infer the size of a symbol by looking at where the next symbol begins.
+	var addrs []uint64
+
+	var imageBase uint64
+	switch oh := f.pe.OptionalHeader.(type) {
+	case *pe.OptionalHeader32:
+		imageBase = uint64(oh.ImageBase)
+	case *pe.OptionalHeader64:
+		imageBase = oh.ImageBase
+	}
+
+	var syms []Sym
+	for _, s := range f.pe.Symbols {
+		const (
+			N_UNDEF = 0  // An undefined (extern) symbol
+			N_ABS   = -1 // An absolute symbol (e_value is a constant, not an address)
+			N_DEBUG = -2 // A debugging symbol
+		)
+		sym := Sym{Name: s.Name, Addr: uint64(s.Value), Code: '?'}
+		switch s.SectionNumber {
+		case N_UNDEF:
+			sym.Code = 'U'
+		case N_ABS:
+			sym.Code = 'C'
+		case N_DEBUG:
+			sym.Code = '?'
+		default:
+			if s.SectionNumber < 0 || len(f.pe.Sections) < int(s.SectionNumber) {
+				return nil, fmt.Errorf("invalid section number in symbol table")
+			}
+			sect := f.pe.Sections[s.SectionNumber-1]
+			const (
+				text  = 0x20
+				data  = 0x40
+				bss   = 0x80
+				permW = 0x80000000
+			)
+			ch := sect.Characteristics
+			switch {
+			case ch&text != 0:
+				sym.Code = 'T'
+			case ch&data != 0:
+				if ch&permW == 0 {
+					sym.Code = 'R'
+				} else {
+					sym.Code = 'D'
+				}
+			case ch&bss != 0:
+				sym.Code = 'B'
+			}
+			sym.Addr += imageBase + uint64(sect.VirtualAddress)
+		}
+		syms = append(syms, sym)
+		addrs = append(addrs, sym.Addr)
+	}
+
+	sort.Sort(uint64s(addrs))
+	for i := range syms {
+		j := sort.Search(len(addrs), func(x int) bool { return addrs[x] > syms[i].Addr })
+		if j < len(addrs) {
+			syms[i].Size = int64(addrs[j] - syms[i].Addr)
+		}
+	}
+
+	return syms, nil
+}
+
+func (f *peFile) pcln() (textStart uint64, symtab, pclntab []byte, err error) {
+	var imageBase uint64
+	switch oh := f.pe.OptionalHeader.(type) {
+	case *pe.OptionalHeader32:
+		imageBase = uint64(oh.ImageBase)
+	case *pe.OptionalHeader64:
+		imageBase = oh.ImageBase
+	default:
+		return 0, nil, nil, fmt.Errorf("pe file format not recognized")
+	}
+	if sect := f.pe.Section(".text"); sect != nil {
+		textStart = imageBase + uint64(sect.VirtualAddress)
+	}
+	if pclntab, err = loadPETable(f.pe, "runtime.pclntab", "runtime.epclntab"); err != nil {
+		// We didn't find the symbols, so look for the names used in 1.3 and earlier.
+		// TODO: Remove code looking for the old symbols when we no longer care about 1.3.
+		var err2 error
+		if pclntab, err2 = loadPETable(f.pe, "pclntab", "epclntab"); err2 != nil {
+			return 0, nil, nil, err
+		}
+	}
+	if symtab, err = loadPETable(f.pe, "runtime.symtab", "runtime.esymtab"); err != nil {
+		// Same as above.
+		var err2 error
+		if symtab, err2 = loadPETable(f.pe, "symtab", "esymtab"); err2 != nil {
+			return 0, nil, nil, err
+		}
+	}
+	return textStart, symtab, pclntab, nil
+}
+
+func (f *peFile) text() (textStart uint64, text []byte, err error) {
+	var imageBase uint64
+	switch oh := f.pe.OptionalHeader.(type) {
+	case *pe.OptionalHeader32:
+		imageBase = uint64(oh.ImageBase)
+	case *pe.OptionalHeader64:
+		imageBase = oh.ImageBase
+	default:
+		return 0, nil, fmt.Errorf("pe file format not recognized")
+	}
+	sect := f.pe.Section(".text")
+	if sect == nil {
+		return 0, nil, fmt.Errorf("text section not found")
+	}
+	textStart = imageBase + uint64(sect.VirtualAddress)
+	text, err = sect.Data()
+	return
+}
+
+func findPESymbol(f *pe.File, name string) (*pe.Symbol, error) {
+	for _, s := range f.Symbols {
+		if s.Name != name {
+			continue
+		}
+		if s.SectionNumber <= 0 {
+			return nil, fmt.Errorf("symbol %s: invalid section number %d", name, s.SectionNumber)
+		}
+		if len(f.Sections) < int(s.SectionNumber) {
+			return nil, fmt.Errorf("symbol %s: section number %d is larger than max %d", name, s.SectionNumber, len(f.Sections))
+		}
+		return s, nil
+	}
+	return nil, fmt.Errorf("no %s symbol found", name)
+}
+
+func loadPETable(f *pe.File, sname, ename string) ([]byte, error) {
+	ssym, err := findPESymbol(f, sname)
+	if err != nil {
+		return nil, err
+	}
+	esym, err := findPESymbol(f, ename)
+	if err != nil {
+		return nil, err
+	}
+	if ssym.SectionNumber != esym.SectionNumber {
+		return nil, fmt.Errorf("%s and %s symbols must be in the same section", sname, ename)
+	}
+	sect := f.Sections[ssym.SectionNumber-1]
+	data, err := sect.Data()
+	if err != nil {
+		return nil, err
+	}
+	return data[ssym.Value:esym.Value], nil
+}
+
+func (f *peFile) goarch() string {
+	// Not sure how to get the info we want from PE header.
+	// Look in symbol table for telltale rt0 symbol.
+	if _, err := findPESymbol(f.pe, "_rt0_386_windows"); err == nil {
+		return "386"
+	}
+	if _, err := findPESymbol(f.pe, "_rt0_amd64_windows"); err == nil {
+		return "amd64"
+	}
+	return ""
+}
+
+func (f *peFile) loadAddress() (uint64, error) {
+	return 0, fmt.Errorf("unknown load address")
+}
+
+func (f *peFile) dwarf() (*dwarf.Data, error) {
+	return f.pe.DWARF()
+}
diff --git a/vendor/github.com/google/gops/internal/objfile/plan9obj.go b/vendor/github.com/google/gops/internal/objfile/plan9obj.go
new file mode 100644
index 00000000..3e34f65a
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/objfile/plan9obj.go
@@ -0,0 +1,156 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Parsing of Plan 9 a.out executables.
+
+package objfile
+
+import (
+	"debug/dwarf"
+	"debug/plan9obj"
+	"errors"
+	"fmt"
+	"os"
+	"sort"
+)
+
+var validSymType = map[rune]bool{
+	'T': true,
+	't': true,
+	'D': true,
+	'd': true,
+	'B': true,
+	'b': true,
+}
+
+type plan9File struct {
+	plan9 *plan9obj.File
+}
+
+func openPlan9(r *os.File) (rawFile, error) {
+	f, err := plan9obj.NewFile(r)
+	if err != nil {
+		return nil, err
+	}
+	return &plan9File{f}, nil
+}
+
+func (f *plan9File) symbols() ([]Sym, error) {
+	plan9Syms, err := f.plan9.Symbols()
+	if err != nil {
+		return nil, err
+	}
+
+	// Build sorted list of addresses of all symbols.
+	// We infer the size of a symbol by looking at where the next symbol begins.
+	var addrs []uint64
+	for _, s := range plan9Syms {
+		if !validSymType[s.Type] {
+			continue
+		}
+		addrs = append(addrs, s.Value)
+	}
+	sort.Sort(uint64s(addrs))
+
+	var syms []Sym
+
+	for _, s := range plan9Syms {
+		if !validSymType[s.Type] {
+			continue
+		}
+		sym := Sym{Addr: s.Value, Name: s.Name, Code: s.Type}
+		i := sort.Search(len(addrs), func(x int) bool { return addrs[x] > s.Value })
+		if i < len(addrs) {
+			sym.Size = int64(addrs[i] - s.Value)
+		}
+		syms = append(syms, sym)
+	}
+
+	return syms, nil
+}
+
+func (f *plan9File) pcln() (textStart uint64, symtab, pclntab []byte, err error) {
+	textStart = f.plan9.LoadAddress + f.plan9.HdrSize
+	if pclntab, err = loadPlan9Table(f.plan9, "runtime.pclntab", "runtime.epclntab"); err != nil {
+		// We didn't find the symbols, so look for the names used in 1.3 and earlier.
+		// TODO: Remove code looking for the old symbols when we no longer care about 1.3.
+		var err2 error
+		if pclntab, err2 = loadPlan9Table(f.plan9, "pclntab", "epclntab"); err2 != nil {
+			return 0, nil, nil, err
+		}
+	}
+	if symtab, err = loadPlan9Table(f.plan9, "runtime.symtab", "runtime.esymtab"); err != nil {
+		// Same as above.
+		var err2 error
+		if symtab, err2 = loadPlan9Table(f.plan9, "symtab", "esymtab"); err2 != nil {
+			return 0, nil, nil, err
+		}
+	}
+	return textStart, symtab, pclntab, nil
+}
+
+func (f *plan9File) text() (textStart uint64, text []byte, err error) {
+	sect := f.plan9.Section("text")
+	if sect == nil {
+		return 0, nil, fmt.Errorf("text section not found")
+	}
+	textStart = f.plan9.LoadAddress + f.plan9.HdrSize
+	text, err = sect.Data()
+	return
+}
+
+func findPlan9Symbol(f *plan9obj.File, name string) (*plan9obj.Sym, error) {
+	syms, err := f.Symbols()
+	if err != nil {
+		return nil, err
+	}
+	for _, s := range syms {
+		if s.Name != name {
+			continue
+		}
+		return &s, nil
+	}
+	return nil, fmt.Errorf("no %s symbol found", name)
+}
+
+func loadPlan9Table(f *plan9obj.File, sname, ename string) ([]byte, error) {
+	ssym, err := findPlan9Symbol(f, sname)
+	if err != nil {
+		return nil, err
+	}
+	esym, err := findPlan9Symbol(f, ename)
+	if err != nil {
+		return nil, err
+	}
+	sect := f.Section("text")
+	if sect == nil {
+		return nil, err
+	}
+	data, err := sect.Data()
+	if err != nil {
+		return nil, err
+	}
+	textStart := f.LoadAddress + f.HdrSize
+	return data[ssym.Value-textStart : esym.Value-textStart], nil
+}
+
+func (f *plan9File) goarch() string {
+	switch f.plan9.Magic {
+	case plan9obj.Magic386:
+		return "386"
+	case plan9obj.MagicAMD64:
+		return "amd64"
+	case plan9obj.MagicARM:
+		return "arm"
+	}
+	return ""
+}
+
+func (f *plan9File) loadAddress() (uint64, error) {
+	return 0, fmt.Errorf("unknown load address")
+}
+
+func (f *plan9File) dwarf() (*dwarf.Data, error) {
+	return nil, errors.New("no DWARF data in Plan 9 file")
+}
diff --git a/vendor/github.com/google/gops/internal/sys/arch.go b/vendor/github.com/google/gops/internal/sys/arch.go
new file mode 100644
index 00000000..7033f3fb
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/sys/arch.go
@@ -0,0 +1,161 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sys
+
+import "encoding/binary"
+
+// ArchFamily represents a family of one or more related architectures.
+// For example, amd64 and amd64p32 are both members of the AMD64 family,
+// and ppc64 and ppc64le are both members of the PPC64 family.
+type ArchFamily byte
+
+const (
+	AMD64 ArchFamily = iota
+	ARM
+	ARM64
+	I386
+	MIPS64
+	PPC64
+	S390X
+)
+
+// Arch represents an individual architecture.
+type Arch struct {
+	Name   string
+	Family ArchFamily
+
+	ByteOrder binary.ByteOrder
+
+	IntSize int
+	PtrSize int
+	RegSize int
+
+	// MinLC is the minimum length of an instruction code.
+	MinLC int
+}
+
+// InFamily reports whether a is a member of any of the specified
+// architecture families.
+func (a *Arch) InFamily(xs ...ArchFamily) bool {
+	for _, x := range xs {
+		if a.Family == x {
+			return true
+		}
+	}
+	return false
+}
+
+var Arch386 = &Arch{
+	Name:      "386",
+	Family:    I386,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   4,
+	PtrSize:   4,
+	RegSize:   4,
+	MinLC:     1,
+}
+
+var ArchAMD64 = &Arch{
+	Name:      "amd64",
+	Family:    AMD64,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     1,
+}
+
+var ArchAMD64P32 = &Arch{
+	Name:      "amd64p32",
+	Family:    AMD64,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   4,
+	PtrSize:   4,
+	RegSize:   8,
+	MinLC:     1,
+}
+
+var ArchARM = &Arch{
+	Name:      "arm",
+	Family:    ARM,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   4,
+	PtrSize:   4,
+	RegSize:   4,
+	MinLC:     4,
+}
+
+var ArchARM64 = &Arch{
+	Name:      "arm64",
+	Family:    ARM64,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchMIPS64 = &Arch{
+	Name:      "mips64",
+	Family:    MIPS64,
+	ByteOrder: binary.BigEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchMIPS64LE = &Arch{
+	Name:      "mips64le",
+	Family:    MIPS64,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchPPC64 = &Arch{
+	Name:      "ppc64",
+	Family:    PPC64,
+	ByteOrder: binary.BigEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchPPC64LE = &Arch{
+	Name:      "ppc64le",
+	Family:    PPC64,
+	ByteOrder: binary.LittleEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     4,
+}
+
+var ArchS390X = &Arch{
+	Name:      "s390x",
+	Family:    S390X,
+	ByteOrder: binary.BigEndian,
+	IntSize:   8,
+	PtrSize:   8,
+	RegSize:   8,
+	MinLC:     2,
+}
+
+var Archs = [...]*Arch{
+	Arch386,
+	ArchAMD64,
+	ArchAMD64P32,
+	ArchARM,
+	ArchARM64,
+	ArchMIPS64,
+	ArchMIPS64LE,
+	ArchPPC64,
+	ArchPPC64LE,
+	ArchS390X,
+}
diff --git a/vendor/github.com/google/gops/signal/LICENSE b/vendor/github.com/google/gops/signal/LICENSE
new file mode 100644
index 00000000..55e52a01
--- /dev/null
+++ b/vendor/github.com/google/gops/signal/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2016 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/google/gops/signal/signal.go b/vendor/github.com/google/gops/signal/signal.go
new file mode 100644
index 00000000..b2bfbe15
--- /dev/null
+++ b/vendor/github.com/google/gops/signal/signal.go
@@ -0,0 +1,35 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package signal contains signals used to communicate to the gops agents.
+package signal
+
+const (
+	// StackTrace represents a command to print stack trace.
+	StackTrace = byte(0x1)
+
+	// GC runs the garbage collector.
+	GC = byte(0x2)
+
+	// MemStats reports memory stats.
+	MemStats = byte(0x3)
+
+	// Version prints the Go version.
+	Version = byte(0x4)
+
+	// HeapProfile starts `go tool pprof` with the current memory profile.
+	HeapProfile = byte(0x5)
+
+	// CPUProfile starts `go tool pprof` with the current CPU profile
+	CPUProfile = byte(0x6)
+
+	// Stats returns Go runtime statistics such as number of goroutines, GOMAXPROCS, and NumCPU.
+	Stats = byte(0x7)
+
+	// Trace starts the Go execution tracer, waits 5 seconds and launches the trace tool.
+	Trace = byte(0x8)
+
+	// BinaryDump returns running binary file.
+	BinaryDump = byte(0x9)
+)