1 files changed, 0 insertions, 283 deletions
diff --git a/vendor/github.com/google/gops/internal/objfile/disasm.go b/vendor/github.com/google/gops/internal/objfile/disasm.go
deleted file mode 100644
index 8af0c8f8..00000000
--- a/vendor/github.com/google/gops/internal/objfile/disasm.go
+++ /dev/null
@@ -1,283 +0,0 @@
-// 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)
-}