Text file src/internal/cpu/cpu_x86.s

     1	// Copyright 2017 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	// +build 386 amd64 amd64p32
     6	
     7	#include "textflag.h"
     8	
     9	// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
    10	TEXT ·cpuid(SB), NOSPLIT, $0-24
    11		MOVL eaxArg+0(FP), AX
    12		MOVL ecxArg+4(FP), CX
    13		CPUID
    14		MOVL AX, eax+8(FP)
    15		MOVL BX, ebx+12(FP)
    16		MOVL CX, ecx+16(FP)
    17		MOVL DX, edx+20(FP)
    18		RET
    19	
    20	// func xgetbv() (eax, edx uint32)
    21	TEXT ·xgetbv(SB),NOSPLIT,$0-8
    22	#ifdef GOOS_nacl
    23		// nacl does not support XGETBV.
    24		MOVL $0, eax+0(FP)
    25		MOVL $0, edx+4(FP)
    26	#else
    27		MOVL $0, CX
    28		XGETBV
    29		MOVL AX, eax+0(FP)
    30		MOVL DX, edx+4(FP)
    31	#endif
    32		RET

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