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| author | Josh Bleecher Snyder <josharian@gmail.com> | 2016-06-17 12:28:31 -0700 |
|---|---|---|
| committer | Josh Bleecher Snyder <josharian@gmail.com> | 2016-08-16 20:26:16 +0000 |
| commit | 0cd8faf74494f400d278b9b0071908951bea6f40 (patch) | |
| tree | 29aaa5f0f39a30196e8a9fdff75de3d9004939d1 /src/cmd/internal/obj/link.go | |
| parent | 496174e32e8983f46c6178cab250ea08f4d89dd2 (diff) | |
| download | go-0cd8faf74494f400d278b9b0071908951bea6f40.tar.xz | |
cmd/internal/obj: add opcode space safety check
This CL adds a safety mechanism
for changing the number of opcodes
available per architecture.
A subsequent CL will actually make the change.
Change-Id: I6332ed5514f2f153c54d11b7da0cc8a6be1c8066
Reviewed-on: https://go-review.googlesource.com/24222
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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 3c66eecbf0..edd45d411d 100644 --- a/src/cmd/internal/obj/link.go +++ b/src/cmd/internal/obj/link.go @@ -308,7 +308,8 @@ const ( ABaseMIPS64 ABaseS390X - AMask = 1<<12 - 1 // AND with this to use the opcode as an array index. + AllowedOpCodes = 1 << 12 // The number of opcodes available for any given architecture. + AMask = AllowedOpCodes - 1 // AND with this to use the opcode as an array index. ) // An LSym is the sort of symbol that is written to an object file. |