diff options
| author | Dave Cheney <dave@cheney.net> | 2014-10-28 11:15:48 +1100 |
|---|---|---|
| committer | Dave Cheney <dave@cheney.net> | 2014-10-28 11:15:48 +1100 |
| commit | c9d3f794a30d01abe9da84bfc2be7b5303421043 (patch) | |
| tree | 536e600420f22688dfbcb888d6eae5631daf7463 | |
| parent | 8fd8d4fc3e77101d12b836ca0ff334d20cd2ea04 (diff) | |
| download | go-c9d3f794a30d01abe9da84bfc2be7b5303421043.tar.gz | |
[dev.power64] runtime: fix cas64 on power64x
cas64 was jumping to the wrong offset.
LGTM=minux, rsc
R=rsc, austin, minux
CC=golang-codereviews
https://codereview.appspot.com/158710043
| -rw-r--r-- | src/runtime/asm_power64x.s | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/runtime/asm_power64x.s b/src/runtime/asm_power64x.s index 76bf42094..b489f6acc 100644 --- a/src/runtime/asm_power64x.s +++ b/src/runtime/asm_power64x.s @@ -409,17 +409,19 @@ TEXT runtime·cas(SB), NOSPLIT, $0-17 MOVD p+0(FP), R3 MOVW old+8(FP), R4 MOVW new+12(FP), R5 +cas_again: SYNC LWAR (R3), R6 CMPW R6, R4 - BNE 8(PC) + BNE cas_fail STWCCC R5, (R3) - BNE -5(PC) + BNE cas_again MOVD $1, R3 SYNC ISYNC MOVB R3, ret+16(FP) RETURN +cas_fail: MOVD $0, R3 BR -5(PC) @@ -435,19 +437,21 @@ TEXT runtime·cas64(SB), NOSPLIT, $0-25 MOVD p+0(FP), R3 MOVD old+8(FP), R4 MOVD new+16(FP), R5 +cas64_again: SYNC LDAR (R3), R6 CMP R6, R4 - BNE 7(PC) + BNE cas64_fail STDCCC R5, (R3) - BNE -5(PC) + BNE cas64_again MOVD $1, R3 SYNC ISYNC MOVB R3, ret+24(FP) RETURN +cas64_fail: MOVD $0, R3 - BR -4(PC) + BR -5(PC) TEXT runtime·casuintptr(SB), NOSPLIT, $0-25 BR runtime·cas64(SB) |