github.com/iDigitalFlame/xmt@v0.5.4/device/cpu.s (about)

     1  //go:build amd64 || 386
     2  // +build amd64 386
     3  
     4  // Copyright (C) 2020 - 2023 iDigitalFlame
     5  //
     6  // This program is free software: you can redistribute it and/or modify
     7  // it under the terms of the GNU General Public License as published by
     8  // the Free Software Foundation, either version 3 of the License, or
     9  // any later version.
    10  //
    11  // This program is distributed in the hope that it will be useful,
    12  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    13  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14  // GNU General Public License for more details.
    15  //
    16  // You should have received a copy of the GNU General Public License
    17  // along with this program.  If not, see <https://www.gnu.org/licenses/>.
    18  //
    19  
    20  // Golang way to call "CPUID".
    21  // Cut section from "internal/cpu" as we can't directly link it in go1.10.8
    22  
    23  #include "textflag.h"
    24  
    25  // func cpuid(arg1, arg2 uint32) (eax, ebx, ecx, edx uint32)
    26  TEXT ·cpuid(SB), NOSPLIT, $0-24
    27  	MOVL arg1+0(FP), AX
    28  	MOVL arg2+4(FP), CX
    29  	CPUID
    30  	MOVL AX, eax+8(FP)
    31  	MOVL BX, ebx+12(FP)
    32  	MOVL CX, ecx+16(FP)
    33  	MOVL DX, edx+20(FP)
    34  	RET