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| author | Alessandro Arzilli <alessandro.arzilli@gmail.com> | 2017-03-07 18:59:14 +0100 |
|---|---|---|
| committer | Matthew Dempsky <mdempsky@google.com> | 2017-04-07 18:15:06 +0000 |
| commit | c8b889cc4824f4dbd64a51a3f7b5b6dce4b87ed2 (patch) | |
| tree | 5df05c53e7455326fc91406fbb60ccf375f73486 /src/cmd/internal/obj/link.go | |
| parent | 7165bcc6baf2508769df3ffe55ac876381f7565b (diff) | |
| download | go-c8b889cc4824f4dbd64a51a3f7b5b6dce4b87ed2.tar.xz | |
cmd/compile: output DWARF lexical blocks for local variables
Change compiler and linker to emit DWARF lexical blocks in debug_info.
Version of debug_info is updated from DWARF v.2 to DWARF v.3 since version 2
does not allow lexical blocks with discontinuous ranges.
Second attempt at https://go-review.googlesource.com/#/c/29591/
Remaining open problems:
- scope information is removed from inlined functions
- variables in debug_info do not have DW_AT_start_scope attributes so a
variable will shadow other variables with the same name as soon as its
containing scope begins, before its declaration.
Updates golang/go#12899, golang/go#6913
Change-Id: I0e260a45b564d14a87b88974eb16c5387cb410a5
Reviewed-on: https://go-review.googlesource.com/36879
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Diffstat (limited to 'src/cmd/internal/obj/link.go')
| -rw-r--r-- | src/cmd/internal/obj/link.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/cmd/internal/obj/link.go b/src/cmd/internal/obj/link.go index fd07851f3b..e08d7a0340 100644 --- a/src/cmd/internal/obj/link.go +++ b/src/cmd/internal/obj/link.go @@ -483,6 +483,7 @@ const ( SHOSTOBJ SDWARFSECT SDWARFINFO + SDWARFRANGE SSUB = SymKind(1 << 8) SMASK = SymKind(SSUB - 1) SHIDDEN = SymKind(1 << 9) @@ -739,7 +740,7 @@ type Link struct { Armsize int32 Pc int64 DiagFunc func(string, ...interface{}) - DebugInfo func(fn *LSym, curfn interface{}) []*dwarf.Var // if non-nil, curfn is a *gc.Node + DebugInfo func(fn *LSym, curfn interface{}) []dwarf.Scope // if non-nil, curfn is a *gc.Node Cursym *LSym Version int Errors int |