projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| ebac4655 JA |
1 | #ifndef ARCH_X86_H |
| 2 | #define ARCH_X86_H | |
| 3 | ||
| 6b13c710 JA |
4 | static inline void do_cpuid(unsigned int *eax, unsigned int *ebx, |
| 5 | unsigned int *ecx, unsigned int *edx) | |
| 6 | { | |
| 7 | asm volatile("xchgl %%ebx, %1\ncpuid\nxchgl %%ebx, %1" | |
| 8 | : "=a" (*eax), "=r" (*ebx), "=c" (*ecx), "=d" (*edx) | |
| 9 | : "0" (*eax) | |
| 10 | : "memory"); | |
| 11 | } | |
| 12 | ||
| c473a9bd | 13 | #include "arch-x86-common.h" /* IWYU pragma: export */ |
| fa80feae | 14 | |
| e12f4ede | 15 | #define FIO_ARCH (arch_x86) |
| ebac4655 | 16 | |
| cb25df61 JA |
17 | #define FIO_HUGE_PAGE 4194304 |
| 18 | ||
| db6defc7 | 19 | #define nop __asm__ __volatile__("rep;nop": : :"memory") |
| 44c47feb JA |
20 | #define read_barrier() __asm__ __volatile__("": : :"memory") |
| 21 | #define write_barrier() __asm__ __volatile__("": : :"memory") | |
| ebac4655 | 22 | |
| 8f7e39dd JA |
23 | static inline unsigned long arch_ffz(unsigned long bitmask) |
| 24 | { | |
| 25 | __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask)); | |
| 26 | return bitmask; | |
| 27 | } | |
| c223da83 JA |
28 | |
| 29 | static inline unsigned long long get_cpu_clock(void) | |
| 30 | { | |
| 6eb9d1b9 | 31 | unsigned long long ret; |
| c223da83 JA |
32 | |
| 33 | __asm__ __volatile__("rdtsc" : "=A" (ret)); | |
| 34 | return ret; | |
| 35 | } | |
| 36 | ||
| 8f7e39dd | 37 | #define ARCH_HAVE_FFZ |
| c223da83 | 38 | #define ARCH_HAVE_CPU_CLOCK |
| 8f7e39dd | 39 | |
| ebac4655 | 40 | #endif |