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compile,link: export package name in debug_info

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Add a new custom attribute to compile units containing the package name
of the package (i.e. the name after the 'package' keyword), so that
debuggers can know it when it's different from the last segment
of the package path.

Change-Id: Ieadaab6f47091aabf2f4dc42c8524452eaa6715b
Reviewed-on: https://go-review.googlesource.com/c/go/+/163677
Run-TryBot: Alessandro Arzilli <alessandro.arzilli@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
This commit is contained in:
Alessandro Arzilli 2019-02-25 13:56:18 +01:00 • committed by Heschi Kreinick
parent abefcac10a
commit e29f74efb9
4 changed files with 77 additions and 0 deletions
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6
src/cmd/link/internal/ld/dwarf.go
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@ -1833,6 +1833,12 @@ func dwarfGenerateDebugInfo(ctxt *Link) {
newattr(unit.dwinfo, dwarf.DW_AT_producer, dwarf.DW_CLS_STRING, int64(len(producer)), producer)
var pkgname string
if s := ctxt.Syms.ROLookup(dwarf.CUInfoPrefix+"packagename."+unit.lib.Pkg, 0); s != nil {
pkgname = string(s.P)
}
newattr(unit.dwinfo, dwarf.DW_AT_go_package_name, dwarf.DW_CLS_STRING, int64(len(pkgname)), pkgname)
if len(lib.Textp) == 0 {
unit.dwinfo.Abbrev = dwarf.DW_ABRV_COMPUNIT_TEXTLESS
}