Use mod vendor for vendored directory (backwards compatible)

1 files changed, 0 insertions, 1005 deletions

diff --git a/vendor/github.com/google/gops/internal/obj/arm64/obj7.go b/vendor/github.com/google/gops/internal/obj/arm64/obj7.go
deleted file mode 100644
index 2d9d1aa7..00000000
--- a/vendor/github.com/google/gops/internal/obj/arm64/obj7.go
+++ /dev/null
@@ -1,1005 +0,0 @@
-// 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,
-}