diff options
| author | Paul E. Murphy <murp@ibm.com> | 2021-03-09 16:55:20 -0600 |
|---|---|---|
| committer | Lynn Boger <laboger@linux.vnet.ibm.com> | 2021-10-12 12:24:09 +0000 |
| commit | 46796703d739ba77913b0a2addab093a02b6d79d (patch) | |
| tree | 6801cfca8e1e6d53e8fcb179894a97323469af62 /src/cmd/internal/obj/objfile.go | |
| parent | 9c1dbdf60edbffeff10f58af21fa055eb0fdd29f (diff) | |
| download | go-46796703d739ba77913b0a2addab093a02b6d79d.tar.xz | |
cmd/internal/obj/ppc64: support alignment of prefixed insn
Insert machine NOPs when a prefixed instruction crosses a 64B boundary.
ISA 3.1 prohibits prefixed instructions being placed across them. Such
instructions generate SIGILL if executed.
Likewise, adjust the function alignment to guarantee such instructions
can never cross one. And, don't pad the PC based on alignment. The
linker can fit these more optimally.
Likewise, include the function alignment when printing function debug
information. This is needed to verify function alignment happens.
Updates #44549
Change-Id: I434fb0ee4e984ca00dc4566f7569c3bcdf93f910
Reviewed-on: https://go-review.googlesource.com/c/go/+/347050
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Diffstat (limited to 'src/cmd/internal/obj/objfile.go')
| -rw-r--r-- | src/cmd/internal/obj/objfile.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/cmd/internal/obj/objfile.go b/src/cmd/internal/obj/objfile.go index 98af803880..a590549f52 100644 --- a/src/cmd/internal/obj/objfile.go +++ b/src/cmd/internal/obj/objfile.go @@ -804,7 +804,7 @@ func (ctxt *Link) writeSymDebugNamed(s *LSym, name string) { fmt.Fprintf(ctxt.Bso, "size=%d", s.Size) if s.Type == objabi.STEXT { fn := s.Func() - fmt.Fprintf(ctxt.Bso, " args=%#x locals=%#x funcid=%#x", uint64(fn.Args), uint64(fn.Locals), uint64(fn.FuncID)) + fmt.Fprintf(ctxt.Bso, " args=%#x locals=%#x funcid=%#x align=%#x", uint64(fn.Args), uint64(fn.Locals), uint64(fn.FuncID), uint64(fn.Align)) if s.Leaf() { fmt.Fprintf(ctxt.Bso, " leaf") } |