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33 lines
716 B
33 lines
716 B
7 years ago
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build 386 amd64 amd64p32
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#include "textflag.h"
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// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
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TEXT ·cpuid(SB), NOSPLIT, $0-24
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MOVL eaxArg+0(FP), AX
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MOVL ecxArg+4(FP), CX
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CPUID
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MOVL AX, eax+8(FP)
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MOVL BX, ebx+12(FP)
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MOVL CX, ecx+16(FP)
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MOVL DX, edx+20(FP)
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RET
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// func xgetbv() (eax, edx uint32)
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TEXT ·xgetbv(SB),NOSPLIT,$0-8
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#ifdef GOOS_nacl
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// nacl does not support XGETBV.
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MOVL $0, eax+0(FP)
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MOVL $0, edx+4(FP)
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#else
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MOVL $0, CX
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WORD $0x010f; BYTE $0xd0 //XGETBV
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MOVL AX, eax+0(FP)
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MOVL DX, edx+4(FP)
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#endif
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RET
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