delay.h 496 B

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  1. #ifndef _ASM_SCORE_DELAY_H
  2. #define _ASM_SCORE_DELAY_H
  3. static inline void __delay(unsigned long loops)
  4. {
  5. /* 3 cycles per loop. */
  6. __asm__ __volatile__ (
  7. "1:\tsubi\t%0, 3\n\t"
  8. "cmpz.c\t%0\n\t"
  9. "ble\t1b\n\t"
  10. : "=r" (loops)
  11. : "0" (loops));
  12. }
  13. static inline void __udelay(unsigned long usecs)
  14. {
  15. unsigned long loops_per_usec;
  16. loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
  17. __delay(usecs * loops_per_usec);
  18. }
  19. #define udelay(usecs) __udelay(usecs)
  20. #endif /* _ASM_SCORE_DELAY_H */