cmd/link: move perelocsect into peFile.emitRelocations (no code changed)

Change-Id: I807412bd743d544195aaf9d720f81b128b4636b3
Reviewed-on: https://go-review.googlesource.com/59421Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/cmd/link/internal/ld/pe.go

@@ -555,10 +555,58 @@ func (f *peFile) emitRelocations(ctxt *Link) {
 		Cput(0)
 	}
 
+	// relocsect relocates symbols from first in section sect, and returns
+	// the total number of relocations emitted.
+	relocsect := func(sect *Section, syms []*Symbol, base uint64) int {
+		// If main section has no bits, nothing to relocate.
+		if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {
+			return 0
+		}
+		relocs := 0
+		sect.Reloff = uint64(coutbuf.Offset())
+		for i, s := range syms {
+			if !s.Attr.Reachable() {
+				continue
+			}
+			if uint64(s.Value) >= sect.Vaddr {
+				syms = syms[i:]
+				break
+			}
+		}
+		eaddr := int32(sect.Vaddr + sect.Length)
+		for _, sym := range syms {
+			if !sym.Attr.Reachable() {
+				continue
+			}
+			if sym.Value >= int64(eaddr) {
+				break
+			}
+			for ri := 0; ri < len(sym.R); ri++ {
+				r := &sym.R[ri]
+				if r.Done != 0 {
+					continue
+				}
+				if r.Xsym == nil {
+					Errorf(sym, "missing xsym in relocation")
+					continue
+				}
+				if r.Xsym.Dynid < 0 {
+					Errorf(sym, "reloc %d to non-coff symbol %s (outer=%s) %d", r.Type, r.Sym.Name, r.Xsym.Name, r.Sym.Type)
+				}
+				if !Thearch.PEreloc1(sym, r, int64(uint64(sym.Value+int64(r.Off))-base)) {
+					Errorf(sym, "unsupported obj reloc %d/%d to %s", r.Type, r.Siz, r.Sym.Name)
+				}
+				relocs++
+			}
+		}
+		sect.Rellen = uint64(coutbuf.Offset()) - sect.Reloff
+		return relocs
+	}
+
 	f.textSect.emitRelocations(func() int {
-		n := perelocsect(ctxt, Segtext.Sections[0], ctxt.Textp, Segtext.Vaddr)
+		n := relocsect(Segtext.Sections[0], ctxt.Textp, Segtext.Vaddr)
 		for _, sect := range Segtext.Sections[1:] {
-			n += perelocsect(ctxt, sect, datap, Segtext.Vaddr)
+			n += relocsect(sect, datap, Segtext.Vaddr)
 		}
 		return n
 	})
@@ -566,7 +614,7 @@ func (f *peFile) emitRelocations(ctxt *Link) {
 	f.dataSect.emitRelocations(func() int {
 		var n int
 		for _, sect := range Segdata.Sections {
-			n += perelocsect(ctxt, sect, datap, Segdata.Vaddr)
+			n += relocsect(sect, datap, Segdata.Vaddr)
 		}
 		return n
 	})
@@ -576,7 +624,7 @@ dwarfLoop:
 		for _, pesect := range f.sections {
 			if sect.Name == pesect.name {
 				pesect.emitRelocations(func() int {
-					return perelocsect(ctxt, sect, dwarfp, sect.Vaddr)
+					return relocsect(sect, dwarfp, sect.Vaddr)
 				})
 				continue dwarfLoop
 			}
@@ -973,61 +1021,6 @@ func addexports(ctxt *Link) {
 	sect.pad(uint32(size))
 }
 
-// perelocsect relocates symbols from first in section sect, and returns
-// the total number of relocations emitted.
-func perelocsect(ctxt *Link, sect *Section, syms []*Symbol, base uint64) int {
-	// If main section has no bits, nothing to relocate.
-	if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {
-		return 0
-	}
-
-	relocs := 0
-
-	sect.Reloff = uint64(coutbuf.Offset())
-	for i, s := range syms {
-		if !s.Attr.Reachable() {
-			continue
-		}
-		if uint64(s.Value) >= sect.Vaddr {
-			syms = syms[i:]
-			break
-		}
-	}
-
-	eaddr := int32(sect.Vaddr + sect.Length)
-	for _, sym := range syms {
-		if !sym.Attr.Reachable() {
-			continue
-		}
-		if sym.Value >= int64(eaddr) {
-			break
-		}
-		for ri := 0; ri < len(sym.R); ri++ {
-			r := &sym.R[ri]
-			if r.Done {
-				continue
-			}
-			if r.Xsym == nil {
-				Errorf(sym, "missing xsym in relocation")
-				continue
-			}
-
-			if r.Xsym.Dynid < 0 {
-				Errorf(sym, "reloc %d (%s) to non-coff symbol %s (outer=%s) %d (%s)", r.Type, RelocName(r.Type), r.Sym.Name, r.Xsym.Name, r.Sym.Type, r.Sym.Type)
-			}
-			if !Thearch.PEreloc1(sym, r, int64(uint64(sym.Value+int64(r.Off))-base)) {
-				Errorf(sym, "unsupported obj reloc %d (%s)/%d to %s", r.Type, RelocName(r.Type), r.Siz, r.Sym.Name)
-			}
-
-			relocs++
-		}
-	}
-
-	sect.Rellen = uint64(coutbuf.Offset()) - sect.Reloff
-
-	return relocs
-}
-
 func (ctxt *Link) dope() {
 	/* relocation table */
 	rel := ctxt.Syms.Lookup(".rel", 0)