diff options
Diffstat (limited to 'src/cmd/internal/obj/dwarf.go')
| -rw-r--r-- | src/cmd/internal/obj/dwarf.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/cmd/internal/obj/dwarf.go b/src/cmd/internal/obj/dwarf.go index 87c62e2981..6dd53ffd12 100644 --- a/src/cmd/internal/obj/dwarf.go +++ b/src/cmd/internal/obj/dwarf.go @@ -402,6 +402,31 @@ func (ctxt *Link) DwarfIntConst(myimportpath, name, typename string, val int64) dwarf.PutIntConst(dwCtxt{ctxt}, s, ctxt.Lookup(dwarf.InfoPrefix+typename), myimportpath+"."+name, val) } +// DwarfGlobal creates a link symbol containing a DWARF entry for +// a global variable. +func (ctxt *Link) DwarfGlobal(myimportpath, typename string, varSym *LSym) { + if myimportpath == "" || varSym.Local() { + return + } + var varname string + if varSym.Pkg == "_" { + // The frontend uses package "_" to mark symbols that should not + // be referenced by index, e.g. linkname'd symbols. + varname = varSym.Name + } else { + // Convert "".<name> into a fully qualified package.sym name. + varname = objabi.PathToPrefix(myimportpath) + varSym.Name[len(`""`):] + } + dieSymName := dwarf.InfoPrefix + varname + dieSym := ctxt.LookupInit(dieSymName, func(s *LSym) { + s.Type = objabi.SDWARFVAR + s.Set(AttrDuplicateOK, true) // needed for shared linkage + ctxt.Data = append(ctxt.Data, s) + }) + typeSym := ctxt.Lookup(dwarf.InfoPrefix + typename) + dwarf.PutGlobal(dwCtxt{ctxt}, dieSym, typeSym, varSym, varname) +} + func (ctxt *Link) DwarfAbstractFunc(curfn interface{}, s *LSym, myimportpath string) { absfn := ctxt.DwFixups.AbsFuncDwarfSym(s) if absfn.Size != 0 { |