cmd/internal/obj: remove Linklookup

It was simply a wrapper around Link.Lookup.
Unwrap everything.

CL prepared using eg with template:

package p

import "cmd/internal/obj"

func before(ctxt *obj.Link, name string, version int) *obj.LSym {
	return obj.Linklookup(ctxt, name, version)
}

func after(ctxt *obj.Link, name string, version int) *obj.LSym {
	return ctxt.Lookup(name, version)
}

Then one comment in cmd/asm/internal/asm/parse.go
was manually updated (and gofmt'ed!),
and func Linklookup deleted.

Passes toolstash-check (as a sanity measure).

Change-Id: Icc4d56b0b2b5c8888d3184c1898c48359ea1e638
Reviewed-on: https://go-review.googlesource.com/39715
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/cmd/asm/internal/asm/parse.go

@@ -567,7 +567,7 @@ func (p *Parser) registerShift(name string, prefix rune) int64 {
 		p.errorf("unexpected %s in register shift", tok.String())
 	}
 	if p.arch.Family == sys.ARM64 {
-		return int64(int64(r1 & 31)<<16 | int64(op)<<22 | int64(uint16(count)))
+		return int64(int64(r1&31)<<16 | int64(op)<<22 | int64(uint16(count)))
 	} else {
 		return int64((r1 & 15) | op<<5 | count)
 	}
@@ -585,7 +585,7 @@ func (p *Parser) symbolReference(a *obj.Addr, name string, prefix rune) {
 		a.Type = obj.TYPE_INDIR
 	}
 	// Weirdness with statics: Might now have "<>".
-	isStatic := 0 // TODO: Really a boolean, but Linklookup wants a "version" integer.
+	isStatic := 0 // TODO: Really a boolean, but ctxt.Lookup wants a "version" integer.
 	if p.peek() == '<' {
 		isStatic = 1
 		p.next()
@@ -594,7 +594,7 @@ func (p *Parser) symbolReference(a *obj.Addr, name string, prefix rune) {
 	if p.peek() == '+' || p.peek() == '-' {
 		a.Offset = int64(p.expr())
 	}
-	a.Sym = obj.Linklookup(p.ctxt, name, isStatic)
+	a.Sym = p.ctxt.Lookup(name, isStatic)
 	if p.peek() == scanner.EOF {
 		if prefix == 0 && p.isJump {
 			// Symbols without prefix or suffix are jump labels.

src/cmd/compile/internal/gc/obj.go

@@ -242,7 +242,7 @@ func Linksym(s *Sym) *obj.LSym {
 		name = s.Pkg.Prefix + "." + s.Name
 	}
 
-	ls := obj.Linklookup(Ctxt, name, 0)
+	ls := Ctxt.Lookup(name, 0)
 	s.Lsym = ls
 	return ls
 }
@@ -302,7 +302,7 @@ func stringsym(s string) (data *obj.LSym) {
 	const prefix = "go.string."
 	symdataname := prefix + symname
 
-	symdata := obj.Linklookup(Ctxt, symdataname, 0)
+	symdata := Ctxt.Lookup(symdataname, 0)
 
 	if !symdata.SeenGlobl() {
 		// string data

src/cmd/compile/internal/gc/pgen.go

@@ -352,7 +352,7 @@ func debuginfo(fnsym *obj.LSym, curfn interface{}) []*dwarf.Var {
 
 		gotype := Linksym(ngotype(n))
 		fnsym.Autom = append(fnsym.Autom, &obj.Auto{
-			Asym:    obj.Linklookup(Ctxt, n.Sym.Name, 0),
+			Asym:    Ctxt.Lookup(n.Sym.Name, 0),
 			Aoffset: int32(n.Xoffset),
 			Name:    name,
 			Gotype:  gotype,
@@ -367,7 +367,7 @@ func debuginfo(fnsym *obj.LSym, curfn interface{}) []*dwarf.Var {
 			Name:   n.Sym.Name,
 			Abbrev: abbrev,
 			Offset: int32(offs),
-			Type:   obj.Linklookup(Ctxt, typename, 0),
+			Type:   Ctxt.Lookup(typename, 0),
 		})
 	}
 

src/cmd/compile/internal/gc/reflect.go

@@ -454,7 +454,7 @@ func dimportpath(p *Pkg) {
 		str = p.Path
 	}
 
-	s := obj.Linklookup(Ctxt, "type..importpath."+p.Prefix+".", 0)
+	s := Ctxt.Lookup("type..importpath."+p.Prefix+".", 0)
 	ot := dnameData(s, 0, str, "", nil, false)
 	ggloblLSym(s, int32(ot), obj.DUPOK|obj.RODATA)
 	p.Pathsym = s
@@ -475,7 +475,7 @@ func dgopkgpathLSym(s *obj.LSym, ot int, pkg *Pkg) int {
 		// type..importpath.""., which the linker will rewrite using the correct import path.
 		// Every package that imports this one directly defines the symbol.
 		// See also https://groups.google.com/forum/#!topic/golang-dev/myb9s53HxGQ.
-		ns := obj.Linklookup(Ctxt, `type..importpath."".`, 0)
+		ns := Ctxt.Lookup(`type..importpath."".`, 0)
 		return dsymptrLSym(s, ot, ns, 0)
 	}
 
@@ -494,7 +494,7 @@ func dgopkgpathOffLSym(s *obj.LSym, ot int, pkg *Pkg) int {
 		// type..importpath.""., which the linker will rewrite using the correct import path.
 		// Every package that imports this one directly defines the symbol.
 		// See also https://groups.google.com/forum/#!topic/golang-dev/myb9s53HxGQ.
-		ns := obj.Linklookup(Ctxt, `type..importpath."".`, 0)
+		ns := Ctxt.Lookup(`type..importpath."".`, 0)
 		return dsymptrOffLSym(s, ot, ns, 0)
 	}
 
@@ -598,7 +598,7 @@ func dname(name, tag string, pkg *Pkg, exported bool) *obj.LSym {
 		sname = fmt.Sprintf(`%s"".%d`, sname, dnameCount)
 		dnameCount++
 	}
-	s := obj.Linklookup(Ctxt, sname, 0)
+	s := Ctxt.Lookup(sname, 0)
 	if len(s.P) > 0 {
 		return s
 	}
@@ -1466,7 +1466,7 @@ func dumptypestructs() {
 	// process ptabs
 	if localpkg.Name == "main" && len(ptabs) > 0 {
 		ot := 0
-		s := obj.Linklookup(Ctxt, "go.plugin.tabs", 0)
+		s := Ctxt.Lookup("go.plugin.tabs", 0)
 		for _, p := range ptabs {
 			// Dump ptab symbol into go.pluginsym package.
 			//
@@ -1481,7 +1481,7 @@ func dumptypestructs() {
 		ggloblLSym(s, int32(ot), int16(obj.RODATA))
 
 		ot = 0
-		s = obj.Linklookup(Ctxt, "go.plugin.exports", 0)
+		s = Ctxt.Lookup("go.plugin.exports", 0)
 		for _, p := range ptabs {
 			ot = dsymptrLSym(s, ot, Linksym(p.s), 0)
 		}

src/cmd/compile/internal/ssa/export_test.go

@@ -114,7 +114,7 @@ func (DummyFrontend) Line(_ src.XPos) string {
 func (DummyFrontend) AllocFrame(f *Func) {
 }
 func (d DummyFrontend) Syslook(s string) *obj.LSym {
-	return obj.Linklookup(d.ctxt, s, 0)
+	return d.ctxt.Lookup(s, 0)
 }
 func (DummyFrontend) UseWriteBarrier() bool {
 	return true // only writebarrier_test cares

src/cmd/compile/internal/x86/ssa.go

@@ -452,7 +452,7 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p := s.Prog(x86.ALEAL)
 		p.From.Type = obj.TYPE_MEM
 		p.From.Name = obj.NAME_EXTERN
-		p.From.Sym = obj.Linklookup(gc.Ctxt, literal, 0)
+		p.From.Sym = gc.Ctxt.Lookup(literal, 0)
 		p.From.Sym.Set(obj.AttrLocal, true)
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = v.Reg()

src/cmd/internal/obj/arm/asm5.go

@@ -337,7 +337,7 @@ func asmoutnacl(ctxt *obj.Link, newprog obj.ProgAlloc, origPC int32, p *obj.Prog
 		// 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)
+				deferreturn = ctxt.Lookup("runtime.deferreturn", 0)
 			}
 			if p.To.Sym == deferreturn {
 				p.Pc = ((int64(origPC) + 15) &^ 15) + 16 - int64(size)

src/cmd/internal/obj/arm/obj5.go

@@ -68,7 +68,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 			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)
+					progedit_tlsfallback = ctxt.Lookup("runtime.read_tls_fallback", 0)
 				}
 
 				// MOVW	LR, R11
@@ -110,7 +110,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 			f32 := float32(p.From.Val.(float64))
 			i32 := math.Float32bits(f32)
 			literal := fmt.Sprintf("$f32.%08x", i32)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
 			p.From.Name = obj.NAME_EXTERN
@@ -121,7 +121,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		if p.From.Type == obj.TYPE_FCONST && chipfloat5(ctxt, p.From.Val.(float64)) < 0 && (chipzero5(ctxt, p.From.Val.(float64)) < 0 || p.Scond&C_SCOND != C_SCOND_NONE) {
 			i64 := math.Float64bits(p.From.Val.(float64))
 			literal := fmt.Sprintf("$f64.%016x", i64)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
 			p.From.Name = obj.NAME_EXTERN
@@ -144,9 +144,9 @@ func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		//     CALL (R9)
 		var sym *obj.LSym
 		if p.As == obj.ADUFFZERO {
-			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+			sym = ctxt.Lookup("runtime.duffzero", 0)
 		} else {
-			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+			sym = ctxt.Lookup("runtime.duffcopy", 0)
 		}
 		offset := p.To.Offset
 		p.As = AMOVW
@@ -650,7 +650,7 @@ func softfloat(ctxt *obj.Link, newprog obj.ProgAlloc, cursym *obj.LSym) {
 		return
 	}
 
-	symsfloat := obj.Linklookup(ctxt, "_sfloat", 0)
+	symsfloat := ctxt.Lookup("_sfloat", 0)
 
 	wasfloat := 0
 	for p := cursym.Text; p != nil; p = p.Link {
@@ -859,7 +859,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc, framesize in
 	case ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0:
 		morestack = "runtime.morestack_noctxt"
 	}
-	call.To.Sym = obj.Linklookup(ctxt, morestack, 0)
+	call.To.Sym = ctxt.Lookup(morestack, 0)
 
 	// B start
 	b := obj.Appendp(call, newprog)
@@ -875,10 +875,10 @@ 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)
+	ctxt.Sym_div = ctxt.Lookup("_div", 0)
+	ctxt.Sym_divu = ctxt.Lookup("_divu", 0)
+	ctxt.Sym_mod = ctxt.Lookup("_mod", 0)
+	ctxt.Sym_modu = ctxt.Lookup("_modu", 0)
 }
 
 var unaryDst = map[obj.As]bool{

src/cmd/internal/obj/arm64/obj7.go

@@ -208,7 +208,7 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc, framesize in
 	case ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0:
 		morestack = "runtime.morestack_noctxt"
 	}
-	call.To.Sym = obj.Linklookup(ctxt, morestack, 0)
+	call.To.Sym = ctxt.Lookup(morestack, 0)
 
 	// B	start
 	jmp := obj.Appendp(call, newprog)
@@ -266,7 +266,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				break
 			}
 			literal := fmt.Sprintf("$f32.%08x", i32)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 4
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -284,7 +284,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				break
 			}
 			literal := fmt.Sprintf("$f64.%016x", i64)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 8
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -340,9 +340,9 @@ func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		//     CALL REGTMP
 		var sym *obj.LSym
 		if p.As == obj.ADUFFZERO {
-			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+			sym = ctxt.Lookup("runtime.duffzero", 0)
 		} else {
-			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+			sym = ctxt.Lookup("runtime.duffcopy", 0)
 		}
 		offset := p.To.Offset
 		p.As = AMOVD

src/cmd/internal/obj/mips/obj0.go

@@ -66,7 +66,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				break
 			}
 			literal := fmt.Sprintf("$f32.%08x", i32)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 4
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -84,7 +84,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				break
 			}
 			literal := fmt.Sprintf("$f64.%016x", i64)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 8
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -96,7 +96,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 	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 := ctxt.Lookup(literal, 0)
 			s.Size = 8
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -769,11 +769,11 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc, framesize in
 	p.As = AJAL
 	p.To.Type = obj.TYPE_BRANCH
 	if ctxt.Cursym.CFunc() {
-		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
+		p.To.Sym = ctxt.Lookup("runtime.morestackc", 0)
 	} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
-		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
+		p.To.Sym = ctxt.Lookup("runtime.morestack_noctxt", 0)
 	} else {
-		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack", 0)
+		p.To.Sym = ctxt.Lookup("runtime.morestack", 0)
 	}
 	p.Mark |= BRANCH
 

src/cmd/internal/obj/objfile.go

@@ -299,13 +299,13 @@ func (w *objWriter) writeRefs(s *LSym) {
 			w.writeRef(d, false)
 		}
 		for _, f := range pc.File {
-			fsym := Linklookup(w.ctxt, f, 0)
+			fsym := w.ctxt.Lookup(f, 0)
 			w.writeRef(fsym, true)
 		}
 		for _, call := range pc.InlTree.nodes {
 			w.writeRef(call.Func, false)
 			f, _ := linkgetlineFromPos(w.ctxt, call.Pos)
-			fsym := Linklookup(w.ctxt, f, 0)
+			fsym := w.ctxt.Lookup(f, 0)
 			w.writeRef(fsym, true)
 		}
 	}
@@ -469,14 +469,14 @@ func (w *objWriter) writeSym(s *LSym) {
 	}
 	w.writeInt(int64(len(pc.File)))
 	for _, f := range pc.File {
-		fsym := Linklookup(ctxt, f, 0)
+		fsym := ctxt.Lookup(f, 0)
 		w.writeRefIndex(fsym)
 	}
 	w.writeInt(int64(len(pc.InlTree.nodes)))
 	for _, call := range pc.InlTree.nodes {
 		w.writeInt(int64(call.Parent))
 		f, l := linkgetlineFromPos(w.ctxt, call.Pos)
-		fsym := Linklookup(ctxt, f, 0)
+		fsym := ctxt.Lookup(f, 0)
 		w.writeRefIndex(fsym)
 		w.writeInt(int64(l))
 		w.writeRefIndex(call.Func)
@@ -558,7 +558,7 @@ func (c dwCtxt) AddSectionOffset(s dwarf.Sym, size int, t interface{}, ofs int64
 // makeFuncDebugEntry makes a DWARF Debugging Information Entry
 // for TEXT symbol s.
 func makeFuncDebugEntry(ctxt *Link, curfn interface{}, s *LSym) {
-	dsym := Linklookup(ctxt, dwarf.InfoPrefix+s.Name, int(s.Version))
+	dsym := ctxt.Lookup(dwarf.InfoPrefix+s.Name, int(s.Version))
 	if dsym.Size != 0 {
 		return
 	}

src/cmd/internal/obj/plist.go

@@ -82,7 +82,7 @@ func Flushplist(ctxt *Link, plist *Plist, newprog ProgAlloc) {
 				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))
+				p.To.Sym = ctxt.Lookup(fmt.Sprintf("%s.args_stackmap", curtext.Name), int(curtext.Version))
 			}
 
 		}
@@ -119,7 +119,7 @@ func Flushplist(ctxt *Link, plist *Plist, newprog ProgAlloc) {
 			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))
+			p.To.Sym = ctxt.Lookup(fmt.Sprintf("%s.args_stackmap", s.Name), int(s.Version))
 		}
 	}
 

src/cmd/internal/obj/ppc64/asm9.go

@@ -2244,7 +2244,7 @@ func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
 				// 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.Sym = ctxt.Lookup("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))
@@ -2270,7 +2270,7 @@ func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
 				rel := obj.Addrel(ctxt.Cursym)
 				rel.Off = int32(ctxt.Pc)
 				rel.Siz = 4
-				rel.Sym = obj.Linklookup(ctxt, "runtime.tls_g", 0)
+				rel.Sym = ctxt.Lookup("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))

src/cmd/internal/obj/ppc64/obj9.go

@@ -59,7 +59,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 			f32 := float32(p.From.Val.(float64))
 			i32 := math.Float32bits(f32)
 			literal := fmt.Sprintf("$f32.%08x", i32)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 4
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -72,7 +72,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		if p.From.Type == obj.TYPE_FCONST {
 			i64 := math.Float64bits(p.From.Val.(float64))
 			literal := fmt.Sprintf("$f64.%016x", i64)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 8
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -85,7 +85,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 	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 := ctxt.Lookup(literal, 0)
 			s.Size = 8
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -131,9 +131,9 @@ func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		//     BL (CTR)
 		var sym *obj.LSym
 		if p.As == obj.ADUFFZERO {
-			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+			sym = ctxt.Lookup("runtime.duffzero", 0)
 		} else {
-			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+			sym = ctxt.Lookup("runtime.duffcopy", 0)
 		}
 		offset := p.To.Offset
 		p.As = AMOVD
@@ -504,7 +504,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				rel := obj.Addrel(ctxt.Cursym)
 				rel.Off = 0
 				rel.Siz = 8
-				rel.Sym = obj.Linklookup(ctxt, ".TOC.", 0)
+				rel.Sym = ctxt.Lookup(".TOC.", 0)
 				rel.Type = obj.R_ADDRPOWER_PCREL
 			}
 
@@ -965,11 +965,11 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc, framesize in
 
 	var morestacksym *obj.LSym
 	if ctxt.Cursym.CFunc() {
-		morestacksym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
+		morestacksym = ctxt.Lookup("runtime.morestackc", 0)
 	} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
-		morestacksym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
+		morestacksym = ctxt.Lookup("runtime.morestack_noctxt", 0)
 	} else {
-		morestacksym = obj.Linklookup(ctxt, "runtime.morestack", 0)
+		morestacksym = ctxt.Lookup("runtime.morestack", 0)
 	}
 
 	if ctxt.Flag_shared {

src/cmd/internal/obj/s390x/objz.go

@@ -62,7 +62,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				break
 			}
 			literal := fmt.Sprintf("$f32.%08x", i32)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 4
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -78,7 +78,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				break
 			}
 			literal := fmt.Sprintf("$f64.%016x", i64)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			s.Size = 8
 			p.From.Type = obj.TYPE_MEM
 			p.From.Sym = s
@@ -95,7 +95,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 				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 := ctxt.Lookup(literal, 0)
 				s.Size = 8
 				p.From.Type = obj.TYPE_MEM
 				p.From.Sym = s
@@ -700,11 +700,11 @@ func stacksplitPost(ctxt *obj.Link, p *obj.Prog, pPre *obj.Prog, pPreempt *obj.P
 	p.As = ABL
 	p.To.Type = obj.TYPE_BRANCH
 	if ctxt.Cursym.CFunc() {
-		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestackc", 0)
+		p.To.Sym = ctxt.Lookup("runtime.morestackc", 0)
 	} else if ctxt.Cursym.Text.From3.Offset&obj.NEEDCTXT == 0 {
-		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
+		p.To.Sym = ctxt.Lookup("runtime.morestack_noctxt", 0)
 	} else {
-		p.To.Sym = obj.Linklookup(ctxt, "runtime.morestack", 0)
+		p.To.Sym = ctxt.Lookup("runtime.morestack", 0)
 	}
 
 	// BR	start

src/cmd/internal/obj/sym.go

@@ -82,10 +82,6 @@ func (ctxt *Link) Lookup(name string, v int) *LSym {
 	return s
 }
 
-func Linklookup(ctxt *Link, name string, v int) *LSym {
-	return ctxt.Lookup(name, v)
-}
-
 func Linksymfmt(s *LSym) string {
 	if s == nil {
 		return "<nil>"

src/cmd/internal/obj/x86/asm6.go

@@ -1832,7 +1832,7 @@ func span6(ctxt *obj.Link, s *obj.LSym, newprog obj.ProgAlloc) {
 	errors := ctxt.Errors
 	var deferreturn *obj.LSym
 	if ctxt.Headtype == obj.Hnacl {
-		deferreturn = obj.Linklookup(ctxt, "runtime.deferreturn", 0)
+		deferreturn = ctxt.Lookup("runtime.deferreturn", 0)
 	}
 	for {
 		loop := int32(0)
@@ -4084,7 +4084,7 @@ func (asmbuf *AsmBuf) doasm(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog) {
 								r.Off = int32(p.Pc + int64(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)
+								r.Sym = ctxt.Lookup("__x86.get_pc_thunk."+strings.ToLower(rconv(int(dst))), 0)
 								asmbuf.PutInt32(0)
 
 								asmbuf.Put2(0x8B, byte(2<<6|reg[dst]|(reg[dst]<<3)))
@@ -4109,7 +4109,7 @@ func (asmbuf *AsmBuf) doasm(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog) {
 							}
 						case obj.Hplan9:
 							if ctxt.Plan9privates == nil {
-								ctxt.Plan9privates = obj.Linklookup(ctxt, "_privates", 0)
+								ctxt.Plan9privates = ctxt.Lookup("_privates", 0)
 							}
 							pp.From = obj.Addr{}
 							pp.From.Type = obj.TYPE_MEM
@@ -4165,7 +4165,7 @@ func (asmbuf *AsmBuf) doasm(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog) {
 
 					case obj.Hplan9:
 						if ctxt.Plan9privates == nil {
-							ctxt.Plan9privates = obj.Linklookup(ctxt, "_privates", 0)
+							ctxt.Plan9privates = ctxt.Lookup("_privates", 0)
 						}
 						pp.From = obj.Addr{}
 						pp.From.Type = obj.TYPE_MEM

src/cmd/internal/obj/x86/obj6.go

@@ -243,7 +243,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 			f32 := float32(p.From.Val.(float64))
 			i32 := math.Float32bits(f32)
 			literal := fmt.Sprintf("$f32.%08x", i32)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			p.From.Type = obj.TYPE_MEM
 			p.From.Name = obj.NAME_EXTERN
 			p.From.Sym = s
@@ -283,7 +283,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		if p.From.Type == obj.TYPE_FCONST {
 			i64 := math.Float64bits(p.From.Val.(float64))
 			literal := fmt.Sprintf("$f64.%016x", i64)
-			s := obj.Linklookup(ctxt, literal, 0)
+			s := ctxt.Lookup(literal, 0)
 			p.From.Type = obj.TYPE_MEM
 			p.From.Name = obj.NAME_EXTERN
 			p.From.Sym = s
@@ -332,9 +332,9 @@ func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		//     CALL $reg
 		var sym *obj.LSym
 		if p.As == obj.ADUFFZERO {
-			sym = obj.Linklookup(ctxt, "runtime.duffzero", 0)
+			sym = ctxt.Lookup("runtime.duffzero", 0)
 		} else {
-			sym = obj.Linklookup(ctxt, "runtime.duffcopy", 0)
+			sym = ctxt.Lookup("runtime.duffcopy", 0)
 		}
 		offset := p.To.Offset
 		p.As = mov
@@ -435,7 +435,7 @@ func rewriteToUseGot(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 		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.From.Sym = ctxt.Lookup("_GLOBAL_OFFSET_TABLE_", 0)
 		p1.To.Type = obj.TYPE_REG
 		p1.To.Reg = REG_BX
 
@@ -542,7 +542,7 @@ func rewriteToPcrel(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 	r := obj.Appendp(q, newprog)
 	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.Sym = ctxt.Lookup("__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)
@@ -598,7 +598,7 @@ func nacladdr(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) {
 
 func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 	if ctxt.Headtype == obj.Hplan9 && ctxt.Plan9privates == nil {
-		ctxt.Plan9privates = obj.Linklookup(ctxt, "_privates", 0)
+		ctxt.Plan9privates = ctxt.Lookup("_privates", 0)
 	}
 
 	if cursym.Text == nil || cursym.Text.Link == nil {
@@ -1165,7 +1165,7 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 	case cursym.Text.From3Offset()&obj.NEEDCTXT == 0:
 		morestack = "runtime.morestack_noctxt"
 	}
-	call.To.Sym = obj.Linklookup(ctxt, morestack, 0)
+	call.To.Sym = ctxt.Lookup(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