github.com/flyinox/gosm@v0.0.0-20171117061539-16768cb62077/src/sync/atomic/asm_amd64.s (about)

     1  // Copyright 2011 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Note: some of these functions are semantically inlined
     6  // by the compiler (in src/cmd/compile/internal/gc/ssa.go).
     7  
     8  // +build !race
     9  
    10  #include "textflag.h"
    11  
    12  TEXT ·SwapInt32(SB),NOSPLIT,$0-20
    13  	JMP	·SwapUint32(SB)
    14  
    15  TEXT ·SwapUint32(SB),NOSPLIT,$0-20
    16  	MOVQ	addr+0(FP), BP
    17  	MOVL	new+8(FP), AX
    18  	XCHGL	AX, 0(BP)
    19  	MOVL	AX, old+16(FP)
    20  	RET
    21  
    22  TEXT ·SwapInt64(SB),NOSPLIT,$0-24
    23  	JMP	·SwapUint64(SB)
    24  
    25  TEXT ·SwapUint64(SB),NOSPLIT,$0-24
    26  	MOVQ	addr+0(FP), BP
    27  	MOVQ	new+8(FP), AX
    28  	XCHGQ	AX, 0(BP)
    29  	MOVQ	AX, old+16(FP)
    30  	RET
    31  
    32  TEXT ·SwapUintptr(SB),NOSPLIT,$0-24
    33  	JMP	·SwapUint64(SB)
    34  
    35  TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0-17
    36  	JMP	·CompareAndSwapUint32(SB)
    37  
    38  TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0-17
    39  	MOVQ	addr+0(FP), BP
    40  	MOVL	old+8(FP), AX
    41  	MOVL	new+12(FP), CX
    42  	LOCK
    43  	CMPXCHGL	CX, 0(BP)
    44  	SETEQ	swapped+16(FP)
    45  	RET
    46  
    47  TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0-25
    48  	JMP	·CompareAndSwapUint64(SB)
    49  
    50  TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0-25
    51  	JMP	·CompareAndSwapUint64(SB)
    52  
    53  TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$0-25
    54  	MOVQ	addr+0(FP), BP
    55  	MOVQ	old+8(FP), AX
    56  	MOVQ	new+16(FP), CX
    57  	LOCK
    58  	CMPXCHGQ	CX, 0(BP)
    59  	SETEQ	swapped+24(FP)
    60  	RET
    61  
    62  TEXT ·AddInt32(SB),NOSPLIT,$0-20
    63  	JMP	·AddUint32(SB)
    64  
    65  TEXT ·AddUint32(SB),NOSPLIT,$0-20
    66  	MOVQ	addr+0(FP), BP
    67  	MOVL	delta+8(FP), AX
    68  	MOVL	AX, CX
    69  	LOCK
    70  	XADDL	AX, 0(BP)
    71  	ADDL	AX, CX
    72  	MOVL	CX, new+16(FP)
    73  	RET
    74  
    75  TEXT ·AddUintptr(SB),NOSPLIT,$0-24
    76  	JMP	·AddUint64(SB)
    77  
    78  TEXT ·AddInt64(SB),NOSPLIT,$0-24
    79  	JMP	·AddUint64(SB)
    80  
    81  TEXT ·AddUint64(SB),NOSPLIT,$0-24
    82  	MOVQ	addr+0(FP), BP
    83  	MOVQ	delta+8(FP), AX
    84  	MOVQ	AX, CX
    85  	LOCK
    86  	XADDQ	AX, 0(BP)
    87  	ADDQ	AX, CX
    88  	MOVQ	CX, new+16(FP)
    89  	RET
    90  
    91  TEXT ·LoadInt32(SB),NOSPLIT,$0-12
    92  	JMP	·LoadUint32(SB)
    93  
    94  TEXT ·LoadUint32(SB),NOSPLIT,$0-12
    95  	MOVQ	addr+0(FP), AX
    96  	MOVL	0(AX), AX
    97  	MOVL	AX, val+8(FP)
    98  	RET
    99  
   100  TEXT ·LoadInt64(SB),NOSPLIT,$0-16
   101  	JMP	·LoadUint64(SB)
   102  
   103  TEXT ·LoadUint64(SB),NOSPLIT,$0-16
   104  	MOVQ	addr+0(FP), AX
   105  	MOVQ	0(AX), AX
   106  	MOVQ	AX, val+8(FP)
   107  	RET
   108  
   109  TEXT ·LoadUintptr(SB),NOSPLIT,$0-16
   110  	JMP	·LoadPointer(SB)
   111  
   112  TEXT ·LoadPointer(SB),NOSPLIT,$0-16
   113  	MOVQ	addr+0(FP), AX
   114  	MOVQ	0(AX), AX
   115  	MOVQ	AX, val+8(FP)
   116  	RET
   117  
   118  TEXT ·StoreInt32(SB),NOSPLIT,$0-12
   119  	JMP	·StoreUint32(SB)
   120  
   121  TEXT ·StoreUint32(SB),NOSPLIT,$0-12
   122  	MOVQ	addr+0(FP), BP
   123  	MOVL	val+8(FP), AX
   124  	XCHGL	AX, 0(BP)
   125  	RET
   126  
   127  TEXT ·StoreInt64(SB),NOSPLIT,$0-16
   128  	JMP	·StoreUint64(SB)
   129  
   130  TEXT ·StoreUint64(SB),NOSPLIT,$0-16
   131  	MOVQ	addr+0(FP), BP
   132  	MOVQ	val+8(FP), AX
   133  	XCHGQ	AX, 0(BP)
   134  	RET
   135  
   136  TEXT ·StoreUintptr(SB),NOSPLIT,$0-16
   137  	JMP	·StoreUint64(SB)