diff options
Diffstat (limited to 'src/sync/atomic/asm_amd64p32.s')
| -rw-r--r-- | src/sync/atomic/asm_amd64p32.s | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/sync/atomic/asm_amd64p32.s b/src/sync/atomic/asm_amd64p32.s new file mode 100644 index 000000000..d77cc2c08 --- /dev/null +++ b/src/sync/atomic/asm_amd64p32.s @@ -0,0 +1,159 @@ +// Copyright 2011 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,$0-12 + JMP ·SwapUint32(SB) + +TEXT ·SwapUint32(SB),NOSPLIT,$0-12 + MOVL addr+0(FP), BX + MOVL new+4(FP), AX + XCHGL AX, 0(BX) + MOVL AX, old+8(FP) + RET + +TEXT ·SwapInt64(SB),NOSPLIT,$0-24 + JMP ·SwapUint64(SB) + +TEXT ·SwapUint64(SB),NOSPLIT,$0-24 + MOVL addr+0(FP), BX + TESTL $7, BX + JZ 2(PC) + MOVL 0, BX // crash with nil ptr deref + MOVQ new+8(FP), AX + XCHGQ AX, 0(BX) + MOVQ AX, old+16(FP) + RET + +TEXT ·SwapUintptr(SB),NOSPLIT,$0-12 + JMP ·SwapUint32(SB) + +TEXT ·SwapPointer(SB),NOSPLIT,$0-12 + JMP ·SwapUint32(SB) + +TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0-17 + JMP ·CompareAndSwapUint32(SB) + +TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0-17 + MOVL addr+0(FP), BX + MOVL old+4(FP), AX + MOVL new+8(FP), CX + LOCK + CMPXCHGL CX, 0(BX) + SETEQ swapped+16(FP) + RET + +TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0-17 + JMP ·CompareAndSwapUint32(SB) + +TEXT ·CompareAndSwapPointer(SB),NOSPLIT,$0-17 + JMP ·CompareAndSwapUint32(SB) + +TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0-25 + JMP ·CompareAndSwapUint64(SB) + +TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$0-25 + MOVL addr+0(FP), BX + TESTL $7, BX + JZ 2(PC) + MOVL 0, BX // crash with nil ptr deref + MOVQ old+8(FP), AX + MOVQ new+16(FP), CX + LOCK + CMPXCHGQ CX, 0(BX) + SETEQ swapped+24(FP) + RET + +TEXT ·AddInt32(SB),NOSPLIT,$0-12 + JMP ·AddUint32(SB) + +TEXT ·AddUint32(SB),NOSPLIT,$0-12 + MOVL addr+0(FP), BX + MOVL delta+4(FP), AX + MOVL AX, CX + LOCK + XADDL AX, 0(BX) + ADDL AX, CX + MOVL CX, new+8(FP) + RET + +TEXT ·AddUintptr(SB),NOSPLIT,$0-12 + JMP ·AddUint32(SB) + +TEXT ·AddInt64(SB),NOSPLIT,$0-24 + JMP ·AddUint64(SB) + +TEXT ·AddUint64(SB),NOSPLIT,$0-24 + MOVL addr+0(FP), BX + TESTL $7, BX + JZ 2(PC) + MOVL 0, BX // crash with nil ptr deref + MOVQ delta+8(FP), AX + MOVQ AX, CX + LOCK + XADDQ AX, 0(BX) + ADDQ AX, CX + MOVQ CX, new+16(FP) + RET + +TEXT ·LoadInt32(SB),NOSPLIT,$0-12 + JMP ·LoadUint32(SB) + +TEXT ·LoadUint32(SB),NOSPLIT,$0-12 + MOVL addr+0(FP), AX + MOVL 0(AX), AX + MOVL AX, val+8(FP) + RET + +TEXT ·LoadInt64(SB),NOSPLIT,$0-16 + JMP ·LoadUint64(SB) + +TEXT ·LoadUint64(SB),NOSPLIT,$0-16 + MOVL addr+0(FP), AX + TESTL $7, AX + JZ 2(PC) + MOVL 0, AX // crash with nil ptr deref + MOVQ 0(AX), AX + MOVQ AX, val+8(FP) + RET + +TEXT ·LoadUintptr(SB),NOSPLIT,$0-12 + JMP ·LoadPointer(SB) + +TEXT ·LoadPointer(SB),NOSPLIT,$0-12 + MOVL addr+0(FP), AX + MOVL 0(AX), AX + MOVL AX, val+8(FP) + RET + +TEXT ·StoreInt32(SB),NOSPLIT,$0-8 + JMP ·StoreUint32(SB) + +TEXT ·StoreUint32(SB),NOSPLIT,$0-8 + MOVL addr+0(FP), BX + MOVL val+4(FP), AX + XCHGL AX, 0(BX) + RET + +TEXT ·StoreInt64(SB),NOSPLIT,$0-16 + JMP ·StoreUint64(SB) + +TEXT ·StoreUint64(SB),NOSPLIT,$0-16 + MOVL addr+0(FP), BX + TESTL $7, BX + JZ 2(PC) + MOVL 0, BX // crash with nil ptr deref + MOVQ val+8(FP), AX + XCHGQ AX, 0(BX) + RET + +TEXT ·StoreUintptr(SB),NOSPLIT,$0-8 + JMP ·StorePointer(SB) + +TEXT ·StorePointer(SB),NOSPLIT,$0-8 + MOVL addr+0(FP), BX + MOVL val+4(FP), AX + XCHGL AX, 0(BX) + RET |