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#ifndef CPU_P6_MSR_H
#define CPU_P6_MSR_H
#ifdef __ROMCC__
typedef __builtin_msr_t msr_t;
static msr_t rdmsr(unsigned long index)
{
return __builtin_rdmsr(index);
}
static void wrmsr(unsigned long index, msr_t msr)
{
__builtin_wrmsr(index, msr.lo, msr.hi);
}
struct tsc_struct {
unsigned lo;
unsigned hi;
};
typedef struct tsc_struct tsc_t;
static tsc_t rdtsc(void)
{
tsc_t res;
asm ("rdtsc"
: "=a" (res.lo), "=d"(res.hi) /* outputs */
: /* inputs */
: /* Clobbers */
);
return res;
}
#endif
#ifdef __GNUC__
typedef struct msr_struct
{
unsigned lo;
unsigned hi;
} msr_t;
static inline msr_t rdmsr(unsigned index)
{
msr_t result;
__asm__ __volatile__ (
"rdmsr"
: "=a" (result.lo), "=d" (result.hi)
: "c" (index)
);
return result;
}
static inline void wrmsr(unsigned index, msr_t msr)
{
__asm__ __volatile__ (
"wrmsr"
: /* No outputs */
: "c" (index), "a" (msr.lo), "d" (msr.hi)
);
}
typedef struct tsc_struct
{
unsigned lo;
unsigned hi;
} tsc_t;
static inline tsc_t rdtsc(void)
{
tsc_t result;
__asm__ __volatile__(
"rdtsc"
: "=a" (result.lo), "=d" (result.hi)
);
return result;
}
typedef struct pmc_struct
{
unsigned lo;
unsigned hi;
} pmc_t;
static inline pmc_t rdpmc(unsigned counter)
{
pmc_t result;
__asm__ __volatile__(
"rdpmc"
: "=a" (result.lo), "=d" (result.hi)
: "c" (counter)
);
return result;
}
#endif
#endif /* CPU_P6_MSR_H */
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