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| author | Aram Hăvărneanu <aram@mgk.ro> | 2015-03-08 14:26:18 +0100 |
|---|---|---|
| committer | Aram Hăvărneanu <aram@mgk.ro> | 2015-03-16 18:46:18 +0000 |
| commit | 2a0833da5083eac7cec15dcb7142a54bf2d806ce (patch) | |
| tree | 64c5c20f09e7e95968f2dfea64ff5734c1d89600 /src/sync/atomic | |
| parent | f0aef42ea16741d9c1872653343c012f5173373e (diff) | |
| download | go-2a0833da5083eac7cec15dcb7142a54bf2d806ce.tar.xz | |
sync/atomic: add support for GOARCH=arm64
Change-Id: I11cd4b5e8daf3805af0eaa83b55b20da889702f4
Reviewed-on: https://go-review.googlesource.com/7145
Reviewed-by: Dave Cheney <dave@cheney.net>
Reviewed-by: Russ Cox <rsc@golang.org>
Diffstat (limited to 'src/sync/atomic')
| -rw-r--r-- | src/sync/atomic/asm_arm64.s | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/sync/atomic/asm_arm64.s b/src/sync/atomic/asm_arm64.s new file mode 100644 index 0000000000..32e96254a4 --- /dev/null +++ b/src/sync/atomic/asm_arm64.s @@ -0,0 +1,149 @@ +// 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. + +#include "textflag.h" + +TEXT ·SwapInt32(SB),NOSPLIT,$0-20 + B ·SwapUint32(SB) + +TEXT ·SwapUint32(SB),NOSPLIT,$0-20 + MOVD addr+0(FP), R0 + MOVW new+8(FP), R1 +again: + LDAXRW (R0), R2 + STLXRW R1, (R0), R3 + CBNZ R3, again + MOVW R2, old+16(FP) + RET + +TEXT ·SwapInt64(SB),NOSPLIT,$0-24 + B ·SwapUint64(SB) + +TEXT ·SwapUint64(SB),NOSPLIT,$0-24 + MOVD addr+0(FP), R0 + MOVD new+8(FP), R1 +again: + LDAXR (R0), R2 + STLXR R1, (R0), R3 + CBNZ R3, again + MOVD R2, old+16(FP) + RET + +TEXT ·SwapUintptr(SB),NOSPLIT,$0-24 + B ·SwapUint64(SB) + +TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0-17 + B ·CompareAndSwapUint32(SB) + +TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0-17 + MOVD addr+0(FP), R0 + MOVW old+8(FP), R1 + MOVW new+12(FP), R2 +again: + LDAXRW (R0), R3 + CMPW R1, R3 + BNE ok + STLXRW R2, (R0), R3 + CBNZ R3, again +ok: + CSET EQ, R0 + MOVB R0, swapped+16(FP) + RET + +TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0-25 + B ·CompareAndSwapUint64(SB) + +TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0-25 + B ·CompareAndSwapUint64(SB) + +TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$0-25 + MOVD addr+0(FP), R0 + MOVD old+8(FP), R1 + MOVD new+16(FP), R2 +again: + LDAXR (R0), R3 + CMP R1, R3 + BNE ok + STLXR R2, (R0), R3 + CBNZ R3, again +ok: + CSET EQ, R0 + MOVB R0, swapped+24(FP) + RET + +TEXT ·AddInt32(SB),NOSPLIT,$0-20 + B ·AddUint32(SB) + +TEXT ·AddUint32(SB),NOSPLIT,$0-20 + MOVD addr+0(FP), R0 + MOVW delta+8(FP), R1 +again: + LDAXRW (R0), R2 + ADDW R2, R1, R2 + STLXRW R2, (R0), R3 + CBNZ R3, again + MOVW R2, new+16(FP) + RET + +TEXT ·AddUintptr(SB),NOSPLIT,$0-24 + B ·AddUint64(SB) + +TEXT ·AddInt64(SB),NOSPLIT,$0-24 + B ·AddUint64(SB) + +TEXT ·AddUint64(SB),NOSPLIT,$0-24 + MOVD addr+0(FP), R0 + MOVD delta+8(FP), R1 +again: + LDAXR (R0), R2 + ADD R2, R1, R2 + STLXR R2, (R0), R3 + CBNZ R3, again + MOVD R2, new+16(FP) + RET + +TEXT ·LoadInt32(SB),NOSPLIT,$0-12 + B ·LoadUint32(SB) + +TEXT ·LoadUint32(SB),NOSPLIT,$0-12 + MOVD addr+0(FP), R0 + LDARW (R0), R0 + MOVW R0, val+8(FP) + RET + +TEXT ·LoadInt64(SB),NOSPLIT,$0-16 + B ·LoadUint64(SB) + +TEXT ·LoadUint64(SB),NOSPLIT,$0-16 + MOVD addr+0(FP), R0 + LDAR (R0), R0 + MOVD R0, val+8(FP) + RET + +TEXT ·LoadUintptr(SB),NOSPLIT,$0-16 + B ·LoadPointer(SB) + +TEXT ·LoadPointer(SB),NOSPLIT,$0-16 + B ·LoadUint64(SB) + +TEXT ·StoreInt32(SB),NOSPLIT,$0-12 + B ·StoreUint32(SB) + +TEXT ·StoreUint32(SB),NOSPLIT,$0-12 + MOVD addr+0(FP), R0 + MOVW val+8(FP), R1 + STLRW R1, (R0) + RET + +TEXT ·StoreInt64(SB),NOSPLIT,$0-16 + B ·StoreUint64(SB) + +TEXT ·StoreUint64(SB),NOSPLIT,$0-16 + MOVD addr+0(FP), R0 + MOVD val+8(FP), R1 + STLR R1, (R0) + RET + +TEXT ·StoreUintptr(SB),NOSPLIT,$0-16 + B ·StoreUint64(SB) |