pc-bios/s390-ccw/s390-time.h

   1 #ifndef TIME_H
   2 #define TIME_H
   3
   4 static inline u64 get_clock(void)
   5 {
   6     u64 r;
   7
   8     asm volatile("stck %0" : "=Q" (r) : : "cc");
   9     return r;
  10 }
  11
  12 static inline u64 get_time_ms(void)
  13 {
  14     /* Bit 51 is incremented each microsecond */
  15     return (get_clock() >> 12) / 1000;
  16 }
  17
  18 static inline u64 get_time_seconds(void)
  19 {
  20     return get_time_ms() / 1000;
  21 }
  22
  23 #endif