diff options
| author | qmuntal <quimmuntal@gmail.com> | 2023-01-16 16:21:48 +0100 |
|---|---|---|
| committer | Quim Muntal <quimmuntal@gmail.com> | 2023-04-05 19:44:37 +0000 |
| commit | 76ac54b50ea39bbb1389ecfed71f4f0991cb4289 (patch) | |
| tree | 5c14d62f6a442fc72a011b68a247fc7730b184a6 /src/cmd/internal/obj/objfile.go | |
| parent | d15fcbc79f252fe5c01e099ab89b58f1de61df32 (diff) | |
| download | go-76ac54b50ea39bbb1389ecfed71f4f0991cb4289.tar.xz | |
cmd/internal/obj: generate SEH aux symbols for windows/amd64
This CL updates the Go compiler so it generate SEH unwind info [1] as a
function auxiliary symbol when building for windows/amd64.
A follow up CL will teach the Go linker how to assemble these codes
into the PE .xdata section.
Updates #57302
[1] https://learn.microsoft.com/en-us/cpp/build/exception-handling-x64#struct-unwind_info
Change-Id: I40ae0437bfee326c1a67c2b5e1496f0bf3ecea17
Reviewed-on: https://go-review.googlesource.com/c/go/+/461749
Reviewed-by: Davis Goodin <dagood@microsoft.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Diffstat (limited to 'src/cmd/internal/obj/objfile.go')
| -rw-r--r-- | src/cmd/internal/obj/objfile.go | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/cmd/internal/obj/objfile.go b/src/cmd/internal/obj/objfile.go index 78fa4c1076..1e9e5a827b 100644 --- a/src/cmd/internal/obj/objfile.go +++ b/src/cmd/internal/obj/objfile.go @@ -602,6 +602,9 @@ func (w *writer) Aux(s *LSym) { if fn.Pcln.Pcinline != nil && fn.Pcln.Pcinline.Size != 0 { w.aux1(goobj.AuxPcinline, fn.Pcln.Pcinline) } + if fn.sehUnwindInfoSym != nil && fn.sehUnwindInfoSym.Size != 0 { + w.aux1(goobj.AuxSehUnwindInfo, fn.sehUnwindInfoSym) + } for _, pcSym := range fn.Pcln.Pcdata { w.aux1(goobj.AuxPcdata, pcSym) } @@ -707,6 +710,9 @@ func nAuxSym(s *LSym) int { if fn.Pcln.Pcinline != nil && fn.Pcln.Pcinline.Size != 0 { n++ } + if fn.sehUnwindInfoSym != nil && fn.sehUnwindInfoSym.Size != 0 { + n++ + } n += len(fn.Pcln.Pcdata) if fn.WasmImport != nil { if fn.WasmImportSym == nil || fn.WasmImportSym.Size == 0 { @@ -770,7 +776,7 @@ func genFuncInfoSyms(ctxt *Link) { fn.FuncInfoSym = isym b.Reset() - auxsyms := []*LSym{fn.dwarfRangesSym, fn.dwarfLocSym, fn.dwarfDebugLinesSym, fn.dwarfInfoSym, fn.WasmImportSym} + auxsyms := []*LSym{fn.dwarfRangesSym, fn.dwarfLocSym, fn.dwarfDebugLinesSym, fn.dwarfInfoSym, fn.WasmImportSym, fn.sehUnwindInfoSym} for _, s := range auxsyms { if s == nil || s.Size == 0 { continue |