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runtime: add atomicor8 for amd64p32

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LGTM=khr
R=golang-codereviews, daniel.morsing, khr, rsc
CC=golang-codereviews, khr, rlh
https://golang.org/cl/131950043
This commit is contained in:
Dmitriy Vyukov 2014-08-20 12:58:01 +04:00
parent b95ed83480
commit ddce7c35f4
1 changed files with 8 additions and 0 deletions
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8
src/pkg/runtime/asm_amd64p32.s
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@ -660,6 +660,14 @@ TEXT runtime·atomicstore64(SB), NOSPLIT, $0-16
XCHGQ AX, 0(BX)
RET
// void runtime·atomicor8(byte volatile*, byte);
TEXT runtime·atomicor8(SB), NOSPLIT, $0-8
MOVL ptr+0(FP), BX
MOVB val+4(FP), AX
LOCK
ORB AX, 0(BX)
RET
// void jmpdefer(fn, sp);
// called from deferreturn.
// 1. pop the caller