1 // Copyright 2016 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 "textflag.h" 6 7 TEXT SwapInt32(SB),NOSPLIT,$0-20 8 BR SwapUint32(SB) 9 10 TEXT SwapUint32(SB),NOSPLIT,$0-20 11 MOVD addr+0(FP), R3 12 MOVWZ new+8(FP), R4 13 MOVWZ (R3), R5 14 repeat: 15 CS R5, R4, (R3) // if (R3)==R5 then (R3)=R4 else R5=(R3) 16 BNE repeat 17 MOVW R5, old+16(FP) 18 RET 19 20 TEXT SwapInt64(SB),NOSPLIT,$0-24 21 BR SwapUint64(SB) 22 23 TEXT SwapUint64(SB),NOSPLIT,$0-24 24 MOVD addr+0(FP), R3 25 MOVD new+8(FP), R4 26 MOVD (R3), R5 27 repeat: 28 CSG R5, R4, (R3) // if (R3)==R5 then (R3)=R4 else R5=(R3) 29 BNE repeat 30 MOVD R5, old+16(FP) 31 RET 32 33 TEXT SwapUintptr(SB),NOSPLIT,$0-24 34 BR SwapUint64(SB) 35 36 TEXT CompareAndSwapInt32(SB),NOSPLIT,$0-17 37 BR CompareAndSwapUint32(SB) 38 39 TEXT CompareAndSwapUint32(SB),NOSPLIT,$0-17 40 MOVD addr+0(FP), R3 41 MOVWZ old+8(FP), R4 42 MOVWZ new+12(FP), R5 43 CS R4, R5, 0(R3) // if R4==(R3) then (R3)=R5 else R4=(R3) 44 BNE cas_fail 45 MOVB $1, swapped+16(FP) 46 RET 47 cas_fail: 48 MOVB $0, swapped+16(FP) 49 RET 50 51 TEXT CompareAndSwapUintptr(SB),NOSPLIT,$0-25 52 BR CompareAndSwapUint64(SB) 53 54 TEXT CompareAndSwapInt64(SB),NOSPLIT,$0-25 55 BR CompareAndSwapUint64(SB) 56 57 TEXT CompareAndSwapUint64(SB),NOSPLIT,$0-25 58 MOVD addr+0(FP), R3 59 MOVD old+8(FP), R4 60 MOVD new+16(FP), R5 61 CSG R4, R5, 0(R3) // if R4==(R3) then (R3)=R5 else R4=(R3) 62 BNE cas64_fail 63 MOVB $1, swapped+24(FP) 64 RET 65 cas64_fail: 66 MOVB $0, swapped+24(FP) 67 RET 68 69 TEXT AddInt32(SB),NOSPLIT,$0-20 70 BR AddUint32(SB) 71 72 TEXT AddUint32(SB),NOSPLIT,$0-20 73 MOVD addr+0(FP), R4 74 MOVWZ delta+8(FP), R5 75 MOVWZ (R4), R3 76 repeat: 77 ADD R3, R5, R6 78 CS R3, R6, (R4) // if R3==(R4) then (R4)=R6 else R3=(R4) 79 BNE repeat 80 MOVW R6, new+16(FP) 81 RET 82 83 TEXT AddUintptr(SB),NOSPLIT,$0-24 84 BR AddUint64(SB) 85 86 TEXT AddInt64(SB),NOSPLIT,$0-24 87 BR AddUint64(SB) 88 89 TEXT AddUint64(SB),NOSPLIT,$0-24 90 MOVD addr+0(FP), R4 91 MOVD delta+8(FP), R5 92 MOVD (R4), R3 93 repeat: 94 ADD R3, R5, R6 95 CSG R3, R6, (R4) // if R3==(R4) then (R4)=R6 else R3=(R4) 96 BNE repeat 97 MOVD R6, new+16(FP) 98 RET 99 100 TEXT LoadInt32(SB),NOSPLIT,$0-12 101 BR LoadUint32(SB) 102 103 TEXT LoadUint32(SB),NOSPLIT,$0-12 104 MOVD addr+0(FP), R3 105 MOVW 0(R3), R4 106 MOVW R4, val+8(FP) 107 RET 108 109 TEXT LoadInt64(SB),NOSPLIT,$0-16 110 BR LoadUint64(SB) 111 112 TEXT LoadUint64(SB),NOSPLIT,$0-16 113 MOVD addr+0(FP), R3 114 MOVD 0(R3), R4 115 MOVD R4, val+8(FP) 116 RET 117 118 TEXT LoadUintptr(SB),NOSPLIT,$0-16 119 BR LoadPointer(SB) 120 121 TEXT LoadPointer(SB),NOSPLIT,$0-16 122 BR LoadUint64(SB) 123 124 TEXT StoreInt32(SB),NOSPLIT,$0-12 125 BR StoreUint32(SB) 126 127 TEXT StoreUint32(SB),NOSPLIT,$0-12 128 MOVD addr+0(FP), R3 129 MOVW val+8(FP), R4 130 MOVW R4, 0(R3) 131 RET 132 133 TEXT StoreInt64(SB),NOSPLIT,$0-16 134 BR StoreUint64(SB) 135 136 TEXT StoreUint64(SB),NOSPLIT,$0-16 137 MOVD addr+0(FP), R3 138 MOVD val+8(FP), R4 139 MOVD R4, 0(R3) 140 RET 141 142 TEXT StoreUintptr(SB),NOSPLIT,$0-16 143 BR StoreUint64(SB) 144
