[netwatch.git] / include / msr.h

/* msr.h
 * Macros to read and write model specific registers
 * NetWatch system management mode administration console
 *
 * Copyright (c) 2008 Jacob Potter and Joshua Wise.  All rights reserved.
 * This program is free software; you can redistribute and/or modify it under
 * the terms found in the file LICENSE in the root of this source tree. 
 *
 */

#ifndef _MSR_H
#define _MSR_H

#define WRMSR(ad, da) \
        do { \
                unsigned long __a = (ad); \
                unsigned long long __d = (da); \
                asm volatile("wrmsr" : : "c" (__a), "A" (__d)); \
        } while (0)
#define RDMSR(ad) \
        ({ \
                unsigned long __a = (ad); \
                unsigned long long __d; \
                asm volatile("rdmsr" : "=A" (__d) : "c" (__a)); \
                __d; \
        })

#endif