github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/atomicbitops/atomicbitops_amd64.s (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // +build amd64
    16  
    17  #include "textflag.h"
    18  
    19  TEXT ·AndUint32(SB),$0-12
    20    MOVQ  addr+0(FP), BP
    21    MOVL  val+8(FP), AX
    22    LOCK
    23    ANDL   AX, 0(BP)
    24    RET
    25  
    26  TEXT ·OrUint32(SB),$0-12
    27    MOVQ  addr+0(FP), BP
    28    MOVL  val+8(FP), AX
    29    LOCK
    30    ORL   AX, 0(BP)
    31    RET
    32  
    33  TEXT ·XorUint32(SB),$0-12
    34    MOVQ  addr+0(FP), BP
    35    MOVL  val+8(FP), AX
    36    LOCK
    37    XORL   AX, 0(BP)
    38    RET
    39  
    40  TEXT ·CompareAndSwapUint32(SB),$0-20
    41    MOVQ  addr+0(FP), DI
    42    MOVL  old+8(FP), AX
    43    MOVL  new+12(FP), DX
    44    LOCK
    45    CMPXCHGL DX, 0(DI)
    46    MOVL  AX, ret+16(FP)
    47    RET
    48  
    49  TEXT ·AndUint64(SB),$0-16
    50    MOVQ  addr+0(FP), BP
    51    MOVQ  val+8(FP), AX
    52    LOCK
    53    ANDQ   AX, 0(BP)
    54    RET
    55  
    56  TEXT ·OrUint64(SB),$0-16
    57    MOVQ  addr+0(FP), BP
    58    MOVQ  val+8(FP), AX
    59    LOCK
    60    ORQ   AX, 0(BP)
    61    RET
    62  
    63  TEXT ·XorUint64(SB),$0-16
    64    MOVQ  addr+0(FP), BP
    65    MOVQ  val+8(FP), AX
    66    LOCK
    67    XORQ   AX, 0(BP)
    68    RET
    69  
    70  TEXT ·CompareAndSwapUint64(SB),$0-32
    71    MOVQ  addr+0(FP), DI
    72    MOVQ  old+8(FP), AX
    73    MOVQ  new+16(FP), DX
    74    LOCK
    75    CMPXCHGQ DX, 0(DI)
    76    MOVQ  AX, ret+24(FP)
    77    RET