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