1/*	$NetBSD: x86_64-asm.S,v 1.1 2008/05/05 17:54:14 ad Exp $	*/
2
3/*-
4 * Copyright (c) 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <machine/asm.h>
30
31	.data
32
33_C_LABEL(cpu):
34	.long	0
35	.globl	_C_LABEL(cpu)
36_C_LABEL(cpu_info_level):
37	.long	-1
38	.globl	_C_LABEL(cpu_info_level)
39
40	.text
41
42ENTRY(x86_cpuid2)
43	pushq	%rbx
44	movq	%rdi, %rax
45	movq	%rsi, %rcx
46	movq	%rdx, %rsi
47	cpuid
48	movl	%eax, 0(%rsi)
49	movl	%ebx, 4(%rsi)
50	movl	%ecx, 8(%rsi)
51	movl	%edx, 12(%rsi)
52	popq	%rbx
53	ret
54
55ENTRY(x86_identify)
56	pushq	%rbx
57	cpuid
58	movl	%eax, PIC_GOT(_C_LABEL(cpu_info_level))
59	popq	%rbx
60	ret
61