sysroot/usr/include/asm/msr.h

#ifndef __ASM_X86_MSR_H_
#define __ASM_X86_MSR_H_

#include <asm/msr-index.h>

#ifndef __ASSEMBLY__
# include <linux/types.h>
#endif

#ifdef __i386__


#else   /* __i386__ */

#ifndef __ASSEMBLY__
#include <linux/errno.h>
/*
 * Access to machine-specific registers (available on 586 and better only)
 * Note: the rd* operations modify the parameters directly (without using
 * pointer indirection), this allows gcc to optimize better
 */

#define rdmsr(msr,val1,val2) \
       __asm__ __volatile__("rdmsr" \
			    : "=a" (val1), "=d" (val2) \
			    : "c" (msr))


#define rdmsrl(msr,val) do { unsigned long a__,b__; \
       __asm__ __volatile__("rdmsr" \
			    : "=a" (a__), "=d" (b__) \
			    : "c" (msr)); \
       val = a__ | (b__<<32); \
} while(0)

#define wrmsr(msr,val1,val2) \
     __asm__ __volatile__("wrmsr" \
			  : /* no outputs */ \
			  : "c" (msr), "a" (val1), "d" (val2))

#define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32)

#define rdtsc(low,high) \
     __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))

#define rdtscl(low) \
     __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx")

#define rdtscp(low,high,aux) \
     __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (low), "=d" (high), "=c" (aux))

#define rdtscll(val) do { \
     unsigned int __a,__d; \
     __asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d)); \
     (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \
} while(0)

#define rdtscpll(val, aux) do { \
     unsigned long __a, __d; \
     __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (__a), "=d" (__d), "=c" (aux)); \
     (val) = (__d << 32) | __a; \
} while (0)

#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)

#define write_rdtscp_aux(val) wrmsr(0xc0000103, val, 0)

#define rdpmc(counter,low,high) \
     __asm__ __volatile__("rdpmc" \
			  : "=a" (low), "=d" (high) \
			  : "c" (counter))


static __inline__ void cpuid(int op, unsigned int *eax, unsigned int *ebx,
			 unsigned int *ecx, unsigned int *edx)
{
	__asm__("cpuid"
		: "=a" (*eax),
		  "=b" (*ebx),
		  "=c" (*ecx),
		  "=d" (*edx)
		: "0" (op));
}

/* Some CPUID calls want 'count' to be placed in ecx */
static __inline__ void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
			       int *edx)
{
	__asm__("cpuid"
		: "=a" (*eax),
		  "=b" (*ebx),
		  "=c" (*ecx),
		  "=d" (*edx)
		: "0" (op), "c" (count));
}

/*
 * CPUID functions returning a single datum
 */
static __inline__ unsigned int cpuid_eax(unsigned int op)
{
	unsigned int eax;

	__asm__("cpuid"
		: "=a" (eax)
		: "0" (op)
		: "bx", "cx", "dx");
	return eax;
}
static __inline__ unsigned int cpuid_ebx(unsigned int op)
{
	unsigned int eax, ebx;

	__asm__("cpuid"
		: "=a" (eax), "=b" (ebx)
		: "0" (op)
		: "cx", "dx" );
	return ebx;
}
static __inline__ unsigned int cpuid_ecx(unsigned int op)
{
	unsigned int eax, ecx;

	__asm__("cpuid"
		: "=a" (eax), "=c" (ecx)
		: "0" (op)
		: "bx", "dx" );
	return ecx;
}
static __inline__ unsigned int cpuid_edx(unsigned int op)
{
	unsigned int eax, edx;

	__asm__("cpuid"
		: "=a" (eax), "=d" (edx)
		: "0" (op)
		: "bx", "cx");
	return edx;
}

#endif  /* __ASSEMBLY__ */

#endif  /* !__i386__ */

#endif