cmd/link: introduce and use peFile.addDWARF

Change-Id: I2c217e03779772605aa0b5a33ef80459333eeebc
Reviewed-on: https://go-review.googlesource.com/59790Reviewed-by: Ian Lance Taylor <iant@golang.org>

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

@@ -1658,19 +1658,3 @@ func dwarfaddelfsectionsyms(ctxt *Link) {
 		putelfsectionsym(sym, sym.Sect.Elfsect.shnum)
 	}
 }
-
-/*
- * Windows PE
- */
-func dwarfaddpeheaders(ctxt *Link) {
-	if *FlagW { // disable dwarf
-		return
-	}
-	for _, sect := range Segdwarf.Sections {
-		h := pefile.addDWARFSection(sect.Name, int(sect.Length))
-		fileoff := sect.Vaddr - Segdwarf.Vaddr + Segdwarf.Fileoff
-		if uint64(h.PointerToRawData) != fileoff {
-			Exitf("%s.PointerToRawData = %#x, want %#x", sect.Name, h.PointerToRawData, fileoff)
-		}
-	}
-}

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

@@ -428,6 +428,23 @@ func (f *peFile) addDWARFSection(name string, size int) *peSection {
 	return h
 }
 
+// addDWARF adds DWARF information to the COFF file f.
+func (f *peFile) addDWARF() {
+	if *FlagS { // disable symbol table
+		return
+	}
+	if *FlagW { // disable dwarf
+		return
+	}
+	for _, sect := range Segdwarf.Sections {
+		h := f.addDWARFSection(sect.Name, int(sect.Length))
+		fileoff := sect.Vaddr - Segdwarf.Vaddr + Segdwarf.Fileoff
+		if uint64(h.PointerToRawData) != fileoff {
+			Exitf("%s.PointerToRawData = %#x, want %#x", sect.Name, h.PointerToRawData, fileoff)
+		}
+	}
+}
+
 // addInitArray adds .ctors COFF section to the file f.
 func (f *peFile) addInitArray(ctxt *Link) *peSection {
 	// The size below was determined by the specification for array relocations,
@@ -1307,9 +1324,7 @@ func Asmbpe(ctxt *Link) {
 		pefile.bssSect = b
 	}
 
-	if !*FlagS {
-		dwarfaddpeheaders(ctxt)
-	}
+	pefile.addDWARF()
 
 	if Linkmode == LinkExternal {
 		pefile.ctorsSect = pefile.addInitArray(ctxt)