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| author | Joel Sing <jsing@google.com> | 2015-03-15 17:32:20 +1100 |
|---|---|---|
| committer | Joel Sing <jsing@google.com> | 2015-03-15 09:12:45 +0000 |
| commit | 6900a421a4fd1957dc63c5a7337a92e7ead4d62d (patch) | |
| tree | c6ea65b31e26c7446f3a8a20ae9b2d5c8455dc92 /src/sync/atomic | |
| parent | 6ed6cb4550f5f65c7e51d4f9b9b70d7418ddbf50 (diff) | |
| download | go-6900a421a4fd1957dc63c5a7337a92e7ead4d62d.tar.xz | |
sync/atomic: add support for openbsd/arm
Change-Id: I45383de6d627be35f40e07a9008b6773f5c2b0d0
Reviewed-on: https://go-review.googlesource.com/7613
Reviewed-by: Minux Ma <minux@golang.org>
Diffstat (limited to 'src/sync/atomic')
| -rw-r--r-- | src/sync/atomic/asm_openbsd_arm.s | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/sync/atomic/asm_openbsd_arm.s b/src/sync/atomic/asm_openbsd_arm.s new file mode 100644 index 0000000000..8c48a0ad56 --- /dev/null +++ b/src/sync/atomic/asm_openbsd_arm.s @@ -0,0 +1,100 @@ +// Copyright 2013 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" + +// OpenBSD/ARM atomic operations. +// TODO(minux): this only supports ARMv6K or higher. + +TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0 + B ·CompareAndSwapUint32(SB) + +TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0 + B ·armCompareAndSwapUint32(SB) + +TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0 + B ·CompareAndSwapUint32(SB) + +TEXT ·AddInt32(SB),NOSPLIT,$0 + B ·AddUint32(SB) + +TEXT ·AddUint32(SB),NOSPLIT,$0 + B ·armAddUint32(SB) + +TEXT ·AddUintptr(SB),NOSPLIT,$0 + B ·AddUint32(SB) + +TEXT ·SwapInt32(SB),NOSPLIT,$0 + B ·SwapUint32(SB) + +TEXT ·SwapUint32(SB),NOSPLIT,$0 + B ·armSwapUint32(SB) + +TEXT ·SwapUintptr(SB),NOSPLIT,$0 + B ·SwapUint32(SB) + +TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0 + B ·CompareAndSwapUint64(SB) + +TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$-4 + B ·armCompareAndSwapUint64(SB) + +TEXT ·AddInt64(SB),NOSPLIT,$0 + B ·addUint64(SB) + +TEXT ·AddUint64(SB),NOSPLIT,$0 + B ·addUint64(SB) + +TEXT ·SwapInt64(SB),NOSPLIT,$0 + B ·swapUint64(SB) + +TEXT ·SwapUint64(SB),NOSPLIT,$0 + B ·swapUint64(SB) + +TEXT ·LoadInt32(SB),NOSPLIT,$0 + B ·LoadUint32(SB) + +TEXT ·LoadUint32(SB),NOSPLIT,$0-8 + MOVW addr+0(FP), R1 +load32loop: + LDREX (R1), R2 // loads R2 + STREX R2, (R1), R0 // stores R2 + CMP $0, R0 + BNE load32loop + MOVW R2, val+4(FP) + RET + +TEXT ·LoadInt64(SB),NOSPLIT,$0 + B ·loadUint64(SB) + +TEXT ·LoadUint64(SB),NOSPLIT,$0 + B ·loadUint64(SB) + +TEXT ·LoadUintptr(SB),NOSPLIT,$0 + B ·LoadUint32(SB) + +TEXT ·LoadPointer(SB),NOSPLIT,$0 + B ·LoadUint32(SB) + +TEXT ·StoreInt32(SB),NOSPLIT,$0 + B ·StoreUint32(SB) + +TEXT ·StoreUint32(SB),NOSPLIT,$0-8 + MOVW addr+0(FP), R1 + MOVW val+4(FP), R2 +storeloop: + LDREX (R1), R4 // loads R4 + STREX R2, (R1), R0 // stores R2 + CMP $0, R0 + BNE storeloop + RET + +TEXT ·StoreInt64(SB),NOSPLIT,$0 + B ·storeUint64(SB) + +TEXT ·StoreUint64(SB),NOSPLIT,$0 + B ·storeUint64(SB) + +TEXT ·StoreUintptr(SB),NOSPLIT,$0 + B ·StoreUint32(SB) |