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cpu_x86.s (642B)

      1 // Copyright 2018 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 //go:build (386 || amd64 || amd64p32) && gc
      6 // +build 386 amd64 amd64p32
      7 // +build gc
      8 
      9 #include "textflag.h"
     10 
     11 // func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
     12 TEXT ·cpuid(SB), NOSPLIT, $0-24
     13 	MOVL eaxArg+0(FP), AX
     14 	MOVL ecxArg+4(FP), CX
     15 	CPUID
     16 	MOVL AX, eax+8(FP)
     17 	MOVL BX, ebx+12(FP)
     18 	MOVL CX, ecx+16(FP)
     19 	MOVL DX, edx+20(FP)
     20 	RET
     21 
     22 // func xgetbv() (eax, edx uint32)
     23 TEXT ·xgetbv(SB),NOSPLIT,$0-8
     24 	MOVL $0, CX
     25 	XGETBV
     26 	MOVL AX, eax+0(FP)
     27 	MOVL DX, edx+4(FP)
     28 	RET