cpu_gc_x86.s

 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
 7#include "textflag.h"
 8
 9// func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32)
10TEXT ยทcpuid(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 ยทxgetbv(SB), NOSPLIT, $0-8
22	MOVL $0, CX
23	XGETBV
24	MOVL AX, eax+0(FP)
25	MOVL DX, edx+4(FP)
26	RET