runtime: fix 386 build after cas64 change
Missed this in CL 10909045.
TBR=golang-dev
CC=golang-dev
https://golang.org/cl/10803045
diff --git a/src/pkg/runtime/asm_386.s b/src/pkg/runtime/asm_386.s
index 630f006..f2265cb 100644
--- a/src/pkg/runtime/asm_386.s
+++ b/src/pkg/runtime/asm_386.s
@@ -319,30 +319,26 @@
MOVL $1, AX
RET
-// bool runtime·cas64(uint64 *val, uint64 *old, uint64 new)
+// bool runtime·cas64(uint64 *val, uint64 old, uint64 new)
// Atomically:
// if(*val == *old){
// *val = new;
// return 1;
// } else {
-// *old = *val
// return 0;
// }
TEXT runtime·cas64(SB), 7, $0
MOVL 4(SP), BP
- MOVL 8(SP), SI
- MOVL 0(SI), AX
- MOVL 4(SI), DX
- MOVL 12(SP), BX
- MOVL 16(SP), CX
+ MOVL 8(SP), AX
+ MOVL 12(SP), DX
+ MOVL 16(SP), BX
+ MOVL 20(SP), CX
LOCK
CMPXCHG8B 0(BP)
JNZ cas64_fail
MOVL $1, AX
RET
cas64_fail:
- MOVL AX, 0(SI)
- MOVL DX, 4(SI)
MOVL $0, AX
RET
