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| 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 #include "../../../cmd/ld/textflag.h" |
| 6 |
| 7 TEXT ·SwapInt32(SB),NOSPLIT,$0-12 |
| 8 JMP ·SwapUint32(SB) |
| 9 |
| 10 TEXT ·SwapUint32(SB),NOSPLIT,$0-12 |
| 11 MOVL addr+0(FP), BX |
| 12 MOVL new+4(FP), AX |
| 13 XCHGL AX, 0(BX) |
| 14 MOVL AX, new+8(FP) |
| 15 RET |
| 16 |
| 17 TEXT ·SwapInt64(SB),NOSPLIT,$0-24 |
| 18 JMP ·SwapUint64(SB) |
| 19 |
| 20 TEXT ·SwapUint64(SB),NOSPLIT,$0-24 |
| 21 MOVL addr+0(FP), BX |
| 22 TESTL $7, BX |
| 23 JZ 2(PC) |
| 24 MOVL 0, BX // crash with nil ptr deref |
| 25 MOVQ new+8(FP), AX |
| 26 XCHGQ AX, 0(BX) |
| 27 MOVQ AX, new+16(FP) |
| 28 RET |
| 29 |
| 30 TEXT ·SwapUintptr(SB),NOSPLIT,$0-24 |
| 31 JMP ·SwapUint32(SB) |
| 32 |
| 33 TEXT ·SwapPointer(SB),NOSPLIT,$0-24 |
| 34 JMP ·SwapUint32(SB) |
| 35 |
| 36 TEXT ·CompareAndSwapInt32(SB),NOSPLIT,$0-17 |
| 37 JMP ·CompareAndSwapUint32(SB) |
| 38 |
| 39 TEXT ·CompareAndSwapUint32(SB),NOSPLIT,$0-17 |
| 40 MOVL addr+0(FP), BX |
| 41 MOVL old+4(FP), AX |
| 42 MOVL new+8(FP), CX |
| 43 LOCK |
| 44 CMPXCHGL CX, 0(BX) |
| 45 SETEQ swapped+16(FP) |
| 46 RET |
| 47 |
| 48 TEXT ·CompareAndSwapUintptr(SB),NOSPLIT,$0-25 |
| 49 JMP ·CompareAndSwapUint32(SB) |
| 50 |
| 51 TEXT ·CompareAndSwapPointer(SB),NOSPLIT,$0-25 |
| 52 JMP ·CompareAndSwapUint32(SB) |
| 53 |
| 54 TEXT ·CompareAndSwapInt64(SB),NOSPLIT,$0-25 |
| 55 JMP ·CompareAndSwapUint64(SB) |
| 56 |
| 57 TEXT ·CompareAndSwapUint64(SB),NOSPLIT,$0-25 |
| 58 MOVL addr+0(FP), BX |
| 59 TESTL $7, BX |
| 60 JZ 2(PC) |
| 61 MOVL 0, BX // crash with nil ptr deref |
| 62 MOVQ old+8(FP), AX |
| 63 MOVQ new+16(FP), CX |
| 64 LOCK |
| 65 CMPXCHGQ CX, 0(BX) |
| 66 SETEQ swapped+24(FP) |
| 67 RET |
| 68 |
| 69 TEXT ·AddInt32(SB),NOSPLIT,$0-12 |
| 70 JMP ·AddUint32(SB) |
| 71 |
| 72 TEXT ·AddUint32(SB),NOSPLIT,$0-12 |
| 73 MOVL addr+0(FP), BX |
| 74 MOVL delta+4(FP), AX |
| 75 MOVL AX, CX |
| 76 LOCK |
| 77 XADDL AX, 0(BX) |
| 78 ADDL AX, CX |
| 79 MOVL CX, new+8(FP) |
| 80 RET |
| 81 |
| 82 TEXT ·AddUintptr(SB),NOSPLIT,$0-12 |
| 83 JMP ·AddUint32(SB) |
| 84 |
| 85 TEXT ·AddInt64(SB),NOSPLIT,$0-12 |
| 86 JMP ·AddUint64(SB) |
| 87 |
| 88 TEXT ·AddUint64(SB),NOSPLIT,$0-24 |
| 89 MOVL addr+0(FP), BX |
| 90 TESTL $7, BX |
| 91 JZ 2(PC) |
| 92 MOVL 0, BX // crash with nil ptr deref |
| 93 MOVQ delta+8(FP), AX |
| 94 MOVQ AX, CX |
| 95 LOCK |
| 96 XADDQ AX, 0(BX) |
| 97 ADDQ AX, CX |
| 98 MOVQ CX, new+16(FP) |
| 99 RET |
| 100 |
| 101 TEXT ·LoadInt32(SB),NOSPLIT,$0-12 |
| 102 JMP ·LoadUint32(SB) |
| 103 |
| 104 TEXT ·LoadUint32(SB),NOSPLIT,$0-12 |
| 105 MOVL addr+0(FP), AX |
| 106 MOVL 0(AX), AX |
| 107 MOVL AX, val+8(FP) |
| 108 RET |
| 109 |
| 110 TEXT ·LoadInt64(SB),NOSPLIT,$0-16 |
| 111 JMP ·LoadUint64(SB) |
| 112 |
| 113 TEXT ·LoadUint64(SB),NOSPLIT,$0-16 |
| 114 MOVL addr+0(FP), AX |
| 115 TESTL $7, AX |
| 116 JZ 2(PC) |
| 117 MOVL 0, AX // crash with nil ptr deref |
| 118 MOVQ 0(AX), AX |
| 119 MOVQ AX, val+8(FP) |
| 120 RET |
| 121 |
| 122 TEXT ·LoadUintptr(SB),NOSPLIT,$0-12 |
| 123 JMP ·LoadPointer(SB) |
| 124 |
| 125 TEXT ·LoadPointer(SB),NOSPLIT,$0-12 |
| 126 MOVL addr+0(FP), AX |
| 127 MOVL 0(AX), AX |
| 128 MOVL AX, val+8(FP) |
| 129 RET |
| 130 |
| 131 TEXT ·StoreInt32(SB),NOSPLIT,$0-8 |
| 132 JMP ·StoreUint32(SB) |
| 133 |
| 134 TEXT ·StoreUint32(SB),NOSPLIT,$0-8 |
| 135 MOVL addr+0(FP), BX |
| 136 MOVL val+4(FP), AX |
| 137 XCHGL AX, 0(BX) |
| 138 RET |
| 139 |
| 140 TEXT ·StoreInt64(SB),NOSPLIT,$0-16 |
| 141 JMP ·StoreUint64(SB) |
| 142 |
| 143 TEXT ·StoreUint64(SB),NOSPLIT,$0-16 |
| 144 MOVL addr+0(FP), BX |
| 145 TESTL $7, BX |
| 146 JZ 2(PC) |
| 147 MOVL 0, BX // crash with nil ptr deref |
| 148 MOVQ val+8(FP), AX |
| 149 XCHGQ AX, 0(BX) |
| 150 RET |
| 151 |
| 152 TEXT ·StoreUintptr(SB),NOSPLIT,$0-8 |
| 153 JMP ·StorePointer(SB) |
| 154 |
| 155 TEXT ·StorePointer(SB),NOSPLIT,$0-8 |
| 156 MOVL addr+0(FP), BX |
| 157 MOVL val+4(FP), AX |
| 158 XCHGL AX, 0(BX) |
| 159 RET |
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