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cmd/compile,cmd/asm: dump sym ABI versions for -S=2

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When -S=2 is in effect for the compiler/assembler, include symbol ABI
values for defined symbols and relocations. This is intended to help
make it easier to distinguish between a symbol and its ABI wrapper.

Change-Id: Ifbf71372392075f15363b40e882b2132406b7d6d
Reviewed-on: https://go-review.googlesource.com/c/go/+/255718
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
This commit is contained in:
Than McIntosh 2020-09-17 15:35:31 -04:00
parent 75fab04b83
commit 982ac06f3d
1 changed files with 11 additions and 3 deletions
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14
src/cmd/internal/obj/objfile.go
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@ -663,7 +663,11 @@ func (ctxt *Link) writeSymDebug(s *LSym) {
}
func (ctxt *Link) writeSymDebugNamed(s *LSym, name string) {
fmt.Fprintf(ctxt.Bso, "%s ", name)
ver := ""
if ctxt.Debugasm > 1 {
ver = fmt.Sprintf("<%d>", s.ABI())
}
fmt.Fprintf(ctxt.Bso, "%s%s ", name, ver)
if s.Type != 0 {
fmt.Fprintf(ctxt.Bso, "%v ", s.Type)
}
@ -726,15 +730,19 @@ func (ctxt *Link) writeSymDebugNamed(s *LSym, name string) {
sort.Sort(relocByOff(s.R)) // generate stable output
for _, r := range s.R {
name := ""
ver := ""
if r.Sym != nil {
name = r.Sym.Name
if ctxt.Debugasm > 1 {
ver = fmt.Sprintf("<%d>", s.ABI())
}
} else if r.Type == objabi.R_TLS_LE {
name = "TLS"
}
if ctxt.Arch.InFamily(sys.ARM, sys.PPC64) {
fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s+%x\n", int(r.Off), r.Siz, r.Type, name, uint64(r.Add))
fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s%s+%x\n", int(r.Off), r.Siz, r.Type, name, ver, uint64(r.Add))
} else {
fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s+%d\n", int(r.Off), r.Siz, r.Type, name, r.Add)
fmt.Fprintf(ctxt.Bso, "\trel %d+%d t=%d %s%s+%d\n", int(r.Off), r.Siz, r.Type, name, ver, r.Add)
}
}
}