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/*
* This file is part of msrtool.
*
* Copyright (c) 2008 Peter Stuge <peter@stuge.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "msrtool.h"
static struct cpuid_t id;
struct cpuid_t *cpuid(void) {
uint32_t outeax;
asm ("cpuid" : "=a" (outeax) : "a" (1) : "%ebx", "%ecx", "%edx");
id.stepping = outeax & 0xf;
outeax >>= 4;
id.model = outeax & 0xf;
outeax >>= 4;
id.family = outeax & 0xf;
outeax >>= 8;
id.ext_model = outeax & 0xf;
outeax >>= 4;
id.ext_family = outeax & 0xff;
if (0xf == id.family) {
/* Intel says always do this, AMD says only for family f */
id.model |= (id.ext_model << 4);
id.family += id.ext_family;
}
return &id;
}
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