[dev.link] cmd/internal/goobj2: remove old-style accessors

Now that we switched to new style accessors everywhere, remove
the old ones.

Keep goobj2.Sym, Reloc, and Aux for now, as they are still used
on the writer side.

Change-Id: I6f3f0d812ff591ea6f12cd0155232f160d53d453
Reviewed-on: https://go-review.googlesource.com/c/go/+/226802
Reviewed-by: Than McIntosh <thanm@google.com>

1 files changed, 8 insertions, 92 deletions

diff --git a/src/cmd/internal/goobj2/objfile.go b/src/cmd/internal/goobj2/objfile.go
index 54316cd7b9..c7b508cc5e 100644
--- a/src/cmd/internal/goobj2/objfile.go
+++ b/src/cmd/internal/goobj2/objfile.go
@@ -218,41 +218,6 @@ func (s *Sym) Write(w *Writer) {
 	w.Uint32(s.Siz)
 }
 
-func (s *Sym) Read(r *Reader, off uint32) {
-	s.Name = r.StringRef(off)
-	s.ABI = r.uint16At(off + 8)
-	s.Type = r.uint8At(off + 10)
-	s.Flag = r.uint8At(off + 11)
-	s.Siz = r.uint32At(off + 12)
-}
-
-// Read fields other than the symbol name. The name is not necessary
-// in some cases, and most of the time spent in Read is reading the
-// name.
-func (s *Sym) ReadWithoutName(r *Reader, off uint32) {
-	s.ABI = r.uint16At(off + 8)
-	s.Type = r.uint8At(off + 10)
-	s.Flag = r.uint8At(off + 11)
-	s.Siz = r.uint32At(off + 12)
-}
-
-func (s *Sym) ReadFlag(r *Reader, off uint32) {
-	s.Flag = r.uint8At(off + 11)
-}
-
-func (s *Sym) Size() int {
-	return stringRefSize + 2 + 1 + 1 + 4
-}
-
-func (s *Sym) Dupok() bool         { return s.Flag&SymFlagDupok != 0 }
-func (s *Sym) Local() bool         { return s.Flag&SymFlagLocal != 0 }
-func (s *Sym) Typelink() bool      { return s.Flag&SymFlagTypelink != 0 }
-func (s *Sym) Leaf() bool          { return s.Flag&SymFlagLeaf != 0 }
-func (s *Sym) NoSplit() bool       { return s.Flag&SymFlagNoSplit != 0 }
-func (s *Sym) ReflectMethod() bool { return s.Flag&SymFlagReflectMethod != 0 }
-func (s *Sym) IsGoType() bool      { return s.Flag&SymFlagGoType != 0 }
-func (s *Sym) TopFrame() bool      { return s.Flag&SymFlagTopFrame != 0 }
-
 const SymSize = stringRefSize + 2 + 1 + 1 + 4
 
 type Sym2 [SymSize]byte
@@ -288,15 +253,6 @@ func (s *SymRef) Write(w *Writer) {
 	w.Uint32(s.SymIdx)
 }
 
-func (s *SymRef) Read(r *Reader, off uint32) {
-	s.PkgIdx = r.uint32At(off)
-	s.SymIdx = r.uint32At(off + 4)
-}
-
-func (s *SymRef) Size() int {
-	return 4 + 4
-}
-
 // Relocation.
 type Reloc struct {
 	Off  int32
@@ -314,27 +270,7 @@ func (r *Reloc) Write(w *Writer) {
 	r.Sym.Write(w)
 }
 
-func (o *Reloc) Read(r *Reader, off uint32) {
-	o.Off = r.int32At(off)
-	o.Siz = r.uint8At(off + 4)
-	o.Type = r.uint8At(off + 5)
-	o.Add = r.int64At(off + 6)
-	o.Sym.Read(r, off+14)
-}
-
-// Only reads the target symbol and reloc type, leaving other fields unset.
-func (o *Reloc) ReadSymType(r *Reader, off uint32) {
-	o.Type = r.uint8At(off + 5)
-	o.Sym.Read(r, off+14)
-}
-
-func (r *Reloc) Size() int {
-	return 4 + 1 + 1 + 8 + r.Sym.Size()
-}
-
-// XXX experiment with another way of accessing relocations.
-
-const RelocSize = 22 // TODO: is it possible to not hard-code this?
+const RelocSize = 4 + 1 + 1 + 8 + 8
 
 type Reloc2 [RelocSize]byte
 
@@ -387,21 +323,7 @@ func (a *Aux) Write(w *Writer) {
 	a.Sym.Write(w)
 }
 
-func (a *Aux) Read(r *Reader, off uint32) {
-	a.Type = r.uint8At(off)
-	a.Sym.Read(r, off+1)
-}
-
-// Only reads the target symbol, leaving other fields unset.
-func (a *Aux) ReadSym(r *Reader, off uint32) {
-	a.Sym.Read(r, off+1)
-}
-
-func (a *Aux) Size() int {
-	return 1 + a.Sym.Size()
-}
-
-const AuxSize = 9 // TODO: is it possible to not hard-code this?
+const AuxSize = 1 + 8
 
 type Aux2 [AuxSize]byte
 
@@ -597,24 +519,20 @@ func (r *Reader) DwarfFile(i int) string {
 }
 
 func (r *Reader) NSym() int {
-	symsiz := (&Sym{}).Size()
-	return int(r.h.Offsets[BlkSymdef+1]-r.h.Offsets[BlkSymdef]) / symsiz
+	return int(r.h.Offsets[BlkSymdef+1]-r.h.Offsets[BlkSymdef]) / SymSize
 }
 
 func (r *Reader) NNonpkgdef() int {
-	symsiz := (&Sym{}).Size()
-	return int(r.h.Offsets[BlkNonpkgdef+1]-r.h.Offsets[BlkNonpkgdef]) / symsiz
+	return int(r.h.Offsets[BlkNonpkgdef+1]-r.h.Offsets[BlkNonpkgdef]) / SymSize
 }
 
 func (r *Reader) NNonpkgref() int {
-	symsiz := (&Sym{}).Size()
-	return int(r.h.Offsets[BlkNonpkgref+1]-r.h.Offsets[BlkNonpkgref]) / symsiz
+	return int(r.h.Offsets[BlkNonpkgref+1]-r.h.Offsets[BlkNonpkgref]) / SymSize
 }
 
 // SymOff returns the offset of the i-th symbol.
 func (r *Reader) SymOff(i int) uint32 {
-	symsiz := (&Sym{}).Size()
-	return r.h.Offsets[BlkSymdef] + uint32(i*symsiz)
+	return r.h.Offsets[BlkSymdef] + uint32(i*SymSize)
 }
 
 // Sym2 returns a pointer to the i-th symbol.
@@ -633,8 +551,7 @@ func (r *Reader) NReloc(i int) int {
 func (r *Reader) RelocOff(i int, j int) uint32 {
 	relocIdxOff := r.h.Offsets[BlkRelocIdx] + uint32(i*4)
 	relocIdx := r.uint32At(relocIdxOff)
-	relocsiz := (&Reloc{}).Size()
-	return r.h.Offsets[BlkReloc] + (relocIdx+uint32(j))*uint32(relocsiz)
+	return r.h.Offsets[BlkReloc] + (relocIdx+uint32(j))*uint32(RelocSize)
 }
 
 // Reloc2 returns a pointer to the j-th relocation of the i-th symbol.
@@ -660,8 +577,7 @@ func (r *Reader) NAux(i int) int {
 func (r *Reader) AuxOff(i int, j int) uint32 {
 	auxIdxOff := r.h.Offsets[BlkAuxIdx] + uint32(i*4)
 	auxIdx := r.uint32At(auxIdxOff)
-	auxsiz := (&Aux{}).Size()
-	return r.h.Offsets[BlkAux] + (auxIdx+uint32(j))*uint32(auxsiz)
+	return r.h.Offsets[BlkAux] + (auxIdx+uint32(j))*uint32(AuxSize)
 }
 
 // Aux2 returns a pointer to the j-th aux symbol of the i-th symbol.