diff options
Diffstat (limited to 'src/runtime/internal/atomic/asm_amd64.s')
| -rw-r--r-- | src/runtime/internal/atomic/asm_amd64.s | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/runtime/internal/atomic/asm_amd64.s b/src/runtime/internal/atomic/asm_amd64.s new file mode 100644 index 0000000000..7463fec4a1 --- /dev/null +++ b/src/runtime/internal/atomic/asm_amd64.s @@ -0,0 +1,150 @@ +// Copyright 2015 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" + +// bool Cas(int32 *val, int32 old, int32 new) +// Atomically: +// if(*val == old){ +// *val = new; +// return 1; +// } else +// return 0; +TEXT runtime∕internal∕atomic·Cas(SB),NOSPLIT,$0-17 + MOVQ ptr+0(FP), BX + MOVL old+8(FP), AX + MOVL new+12(FP), CX + LOCK + CMPXCHGL CX, 0(BX) + SETEQ ret+16(FP) + RET + +// bool runtime∕internal∕atomic·Cas64(uint64 *val, uint64 old, uint64 new) +// Atomically: +// if(*val == *old){ +// *val = new; +// return 1; +// } else { +// return 0; +// } +TEXT runtime∕internal∕atomic·Cas64(SB), NOSPLIT, $0-25 + MOVQ ptr+0(FP), BX + MOVQ old+8(FP), AX + MOVQ new+16(FP), CX + LOCK + CMPXCHGQ CX, 0(BX) + SETEQ ret+24(FP) + RET + +TEXT runtime∕internal∕atomic·Casuintptr(SB), NOSPLIT, $0-25 + JMP runtime∕internal∕atomic·Cas64(SB) + +TEXT runtime∕internal∕atomic·Loaduintptr(SB), NOSPLIT, $0-16 + JMP runtime∕internal∕atomic·Load64(SB) + +TEXT runtime∕internal∕atomic·Loaduint(SB), NOSPLIT, $0-16 + JMP runtime∕internal∕atomic·Load64(SB) + +TEXT runtime∕internal∕atomic·Storeuintptr(SB), NOSPLIT, $0-16 + JMP runtime∕internal∕atomic·Store64(SB) + +TEXT runtime∕internal∕atomic·Loadint64(SB), NOSPLIT, $0-16 + JMP runtime∕internal∕atomic·Load64(SB) + +TEXT runtime∕internal∕atomic·Xaddint64(SB), NOSPLIT, $0-16 + JMP runtime∕internal∕atomic·Xadd64(SB) + +// bool Casp(void **val, void *old, void *new) +// Atomically: +// if(*val == old){ +// *val = new; +// return 1; +// } else +// return 0; +TEXT runtime∕internal∕atomic·Casp1(SB), NOSPLIT, $0-25 + MOVQ ptr+0(FP), BX + MOVQ old+8(FP), AX + MOVQ new+16(FP), CX + LOCK + CMPXCHGQ CX, 0(BX) + SETEQ ret+24(FP) + RET + +// uint32 Xadd(uint32 volatile *val, int32 delta) +// Atomically: +// *val += delta; +// return *val; +TEXT runtime∕internal∕atomic·Xadd(SB), NOSPLIT, $0-20 + MOVQ ptr+0(FP), BX + MOVL delta+8(FP), AX + MOVL AX, CX + LOCK + XADDL AX, 0(BX) + ADDL CX, AX + MOVL AX, ret+16(FP) + RET + +TEXT runtime∕internal∕atomic·Xadd64(SB), NOSPLIT, $0-24 + MOVQ ptr+0(FP), BX + MOVQ delta+8(FP), AX + MOVQ AX, CX + LOCK + XADDQ AX, 0(BX) + ADDQ CX, AX + MOVQ AX, ret+16(FP) + RET + +TEXT runtime∕internal∕atomic·Xadduintptr(SB), NOSPLIT, $0-24 + JMP runtime∕internal∕atomic·Xadd64(SB) + +TEXT runtime∕internal∕atomic·Xchg(SB), NOSPLIT, $0-20 + MOVQ ptr+0(FP), BX + MOVL new+8(FP), AX + XCHGL AX, 0(BX) + MOVL AX, ret+16(FP) + RET + +TEXT runtime∕internal∕atomic·Xchg64(SB), NOSPLIT, $0-24 + MOVQ ptr+0(FP), BX + MOVQ new+8(FP), AX + XCHGQ AX, 0(BX) + MOVQ AX, ret+16(FP) + RET + +TEXT runtime∕internal∕atomic·Xchguintptr(SB), NOSPLIT, $0-24 + JMP runtime∕internal∕atomic·Xchg64(SB) + +TEXT runtime∕internal∕atomic·Storep1(SB), NOSPLIT, $0-16 + MOVQ ptr+0(FP), BX + MOVQ val+8(FP), AX + XCHGQ AX, 0(BX) + RET + +TEXT runtime∕internal∕atomic·Store(SB), NOSPLIT, $0-12 + MOVQ ptr+0(FP), BX + MOVL val+8(FP), AX + XCHGL AX, 0(BX) + RET + +TEXT runtime∕internal∕atomic·Store64(SB), NOSPLIT, $0-16 + MOVQ ptr+0(FP), BX + MOVQ val+8(FP), AX + XCHGQ AX, 0(BX) + RET + +// void runtime∕internal∕atomic·Or8(byte volatile*, byte); +TEXT runtime∕internal∕atomic·Or8(SB), NOSPLIT, $0-9 + MOVQ ptr+0(FP), AX + MOVB val+8(FP), BX + LOCK + ORB BX, (AX) + RET + +// void runtime∕internal∕atomic·And8(byte volatile*, byte); +TEXT runtime∕internal∕atomic·And8(SB), NOSPLIT, $0-9 + MOVQ ptr+0(FP), AX + MOVB val+8(FP), BX + LOCK + ANDB BX, (AX) + RET |