github.com/madokast/nopreempt@v1.0.3-0.20240125081507-3fa05aef38ed/g_go1.5.s (about)

     1  // Copyright 2021 Peter Mattis.
     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
    12  // implied. See the License for the specific language governing
    13  // permissions and limitations under the License. See the AUTHORS file
    14  // for names of contributors.
    15  
    16  // Assembly to mimic runtime.getg.
    17  
    18  //go:build (386 || amd64 || amd64p32 || arm || arm64) && gc && go1.5
    19  // +build 386 amd64 amd64p32 arm arm64
    20  // +build gc
    21  // +build go1.5
    22  
    23  #include "textflag.h"
    24  
    25  // func getg() *g
    26  TEXT ·getg(SB),NOSPLIT,$0-8
    27  #ifdef GOARCH_386
    28  	MOVL (TLS), AX
    29  	MOVL AX, ret+0(FP)
    30  #endif
    31  #ifdef GOARCH_amd64
    32  	MOVQ (TLS), AX
    33  	MOVQ AX, ret+0(FP)
    34  #endif
    35  #ifdef GOARCH_arm
    36  	MOVW g, ret+0(FP)
    37  #endif
    38  #ifdef GOARCH_arm64
    39  	MOVD g, ret+0(FP)
    40  #endif
    41  	RET