1 #ifndef ARCH_IA64_H 2 #define ARCH_IA64_H 3 4 #define FIO_ARCH (arch_ia64) 5 6 #define nop asm volatile ("hint @pause" ::: "memory"); 7 #define read_barrier() asm volatile ("mf" ::: "memory") 8 #define write_barrier() asm volatile ("mf" ::: "memory") 9 10 #define ia64_popcnt(x) \ 11 ({ \ 12 unsigned long ia64_intri_res; \ 13 asm ("popcnt %0=%1" : "=r" (ia64_intri_res) : "r" (x)); \ 14 ia64_intri_res; \ 15 }) 16 17 static inline unsigned long arch_ffz(unsigned long bitmask) 18 { 19 return ia64_popcnt(bitmask & (~bitmask - 1)); 20 } 21 22 static inline unsigned long long get_cpu_clock(void) 23 { 24 unsigned long long ret; 25 26 __asm__ __volatile__("mov %0=ar.itc" : "=r" (ret) : : "memory"); 27 return ret; 28 } 29 30 #define ARCH_HAVE_INIT 31 extern int tsc_reliable; 32 static inline int arch_init(char *envp[]) 33 { 34 tsc_reliable = 1; 35 return 0; 36 } 37 38 #define ARCH_HAVE_FFZ 39 #define ARCH_HAVE_CPU_CLOCK 40 41 #endif 42
