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//go:build 386 || amd64
6
7#include "textflag.h"
8
9// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
10TEXT ·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)
21TEXT ·xgetbv(SB),NOSPLIT,$0-8
22 MOVL $0, CX
23 XGETBV
24 MOVL AX, eax+0(FP)
25 MOVL DX, edx+4(FP)
26 RET
27
28// func getGOAMD64level() int32
29TEXT ·getGOAMD64level(SB),NOSPLIT,$0-4
30#ifdef GOAMD64_v4
31 MOVL $4, ret+0(FP)
32#else
33#ifdef GOAMD64_v3
34 MOVL $3, ret+0(FP)
35#else
36#ifdef GOAMD64_v2
37 MOVL $2, ret+0(FP)
38#else
39 MOVL $1, ret+0(FP)
40#endif
41#endif
42#endif
43 RET
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