1 #ifndef ARCH_X86_H 2 #define ARCH_X86_H 3 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 13 #include "arch-x86-common.h" 14 15 #define FIO_ARCH (arch_x86) 16 17 #define FIO_HUGE_PAGE 4194304 18 19 #define nop __asm__ __volatile__("rep;nop": : :"memory") 20 #define read_barrier() __asm__ __volatile__("": : :"memory") 21 #define write_barrier() __asm__ __volatile__("": : :"memory") 22 23 static inline unsigned long arch_ffz(unsigned long bitmask) 24 { 25 __asm__("bsfl %1,%0" :"=r" (bitmask) :"r" (~bitmask)); 26 return bitmask; 27 } 28 29 static inline unsigned long long get_cpu_clock(void) 30 { 31 unsigned long long ret; 32 33 __asm__ __volatile__("rdtsc" : "=A" (ret)); 34 return ret; 35 } 36 37 #define ARCH_HAVE_FFZ 38 #define ARCH_HAVE_CPU_CLOCK 39 40 #endif 41
