include/asm-sparc/delay.h

   1 /* $Id: delay.h,v 1.11 2001/01/01 01:46:15 davem Exp $
   2  * delay.h: Linux delay routines on the Sparc.
   3  *
   4  * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu).
   5  */
   6
   7 #ifndef __SPARC_DELAY_H
   8 #define __SPARC_DELAY_H
   9
  10 extern unsigned long loops_per_jiffy;
  11
  12 extern __inline__ void __delay(unsigned long loops)
  13 {
  14         __asm__ __volatile__("cmp %0, 0\n\t"
  15                              "1: bne 1b\n\t"
  16                              "subcc %0, 1, %0\n" :
  17                              "=&r" (loops) :
  18                              "0" (loops) :
  19                              "cc");
  20 }
  21
  22 /* This is too messy with inline asm on the Sparc. */
  23 extern void udelay(unsigned long usecs);
  24 extern void ndelay(unsigned long usecs);
  25
  26 #endif /* defined(__SPARC_DELAY_H) */