diff options
| author | Russ Cox <rsc@golang.org> | 2014-10-29 12:25:24 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2014-10-29 12:25:24 -0400 |
| commit | 710efc5a3085f55968c120abb25206fb72c05d46 (patch) | |
| tree | 433262b4bdac6643d923971ea21bb39cb69822a7 /src/runtime/atomic_power64x.s | |
| parent | 40520a21d8b050635a417666db959f75d757fff5 (diff) | |
| parent | cc517ca5f7183e7f5d91bf75897b23cc0f4ed04f (diff) | |
| download | go-710efc5a3085f55968c120abb25206fb72c05d46.tar.gz | |
[dev.garbage] all: merge dev.power64 (5ad5e85cfb99) into dev.garbage
The goal here is to get the big-endian fixes so that
in some upcoming code movement for write barriers
I don't make them unmergeable.
LGTM=rlh
R=rlh
CC=golang-codereviews
https://codereview.appspot.com/166890043
Diffstat (limited to 'src/runtime/atomic_power64x.s')
| -rw-r--r-- | src/runtime/atomic_power64x.s | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/runtime/atomic_power64x.s b/src/runtime/atomic_power64x.s new file mode 100644 index 000000000..e72871761 --- /dev/null +++ b/src/runtime/atomic_power64x.s @@ -0,0 +1,40 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build power64 power64le + +#include "textflag.h" + +// uint32 runtime·atomicload(uint32 volatile* addr) +TEXT ·atomicload(SB),NOSPLIT,$-8-12 + MOVD 0(FP), R3 + SYNC + MOVWZ 0(R3), R3 + CMPW R3, R3, CR7 + BC 4, 30, 1(PC) // bne- cr7,0x4 + ISYNC + MOVW R3, ret+8(FP) + RETURN + +// uint64 runtime·atomicload64(uint64 volatile* addr) +TEXT ·atomicload64(SB),NOSPLIT,$-8-16 + MOVD 0(FP), R3 + SYNC + MOVD 0(R3), R3 + CMP R3, R3, CR7 + BC 4, 30, 1(PC) // bne- cr7,0x4 + ISYNC + MOVD R3, ret+8(FP) + RETURN + +// void *runtime·atomicloadp(void *volatile *addr) +TEXT ·atomicloadp(SB),NOSPLIT,$-8-16 + MOVD 0(FP), R3 + SYNC + MOVD 0(R3), R3 + CMP R3, R3, CR7 + BC 4, 30, 1(PC) // bne- cr7,0x4 + ISYNC + MOVD R3, ret+8(FP) + RETURN |