[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
Commit	Line	Data
f1584bb0 JW	1	/* msr.h
	2	* Macros to read and write model specific registers
	3	* NetWatch system management mode administration console
	4	*
	5	* Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved.
	6	* This program is free software; you can redistribute and/or modify it under
	7	* the terms found in the file LICENSE in the root of this source tree.
	8	*
	9	*/
	10
eda689ee JW	11	#ifndef _MSR_H
	12	#define _MSR_H
	13
	14	#define WRMSR(ad, da) \
	15	do { \
	16	unsigned long __a = (ad); \
	17	unsigned long long __d = (da); \
	18	asm volatile("wrmsr" : : "c" (__a), "A" (__d)); \
	19	} while (0)
	20	#define RDMSR(ad) \
	21	({ \
	22	unsigned long __a = (ad); \
	23	unsigned long long __d; \
	24	asm volatile("rdmsr" : "=A" (__d) : "c" (__a)); \
	25	__d; \
	26	})
	27
	28	#endif