#ifndef CPU_X86_TSC_H | |
#define CPU_X86_TSC_H | |
struct tsc_struct { | |
unsigned lo; | |
unsigned hi; | |
}; | |
typedef struct tsc_struct tsc_t; | |
static tsc_t rdtsc(void) | |
{ | |
tsc_t res; | |
__asm__ __volatile__ ( | |
"rdtsc" | |
: "=a" (res.lo), "=d"(res.hi) /* outputs */ | |
); | |
return res; | |
} | |
#ifndef __ROMCC__ | |
static inline unsigned long long rdtscll(void) | |
{ | |
unsigned long long val; | |
asm volatile ("rdtsc" : "=A" (val)); | |
return val; | |
} | |
#endif | |
#endif /* CPU_X86_TSC_H */ |