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[/] [or1k/] [trunk/] [uclinux/] [uC-libc/] [include/] [asm/] [delay.h] - Rev 1778
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#ifndef _OR1K_DELAY_H #define _OR1K_DELAY_H extern unsigned long loops_per_sec; #include <linux/kernel.h> #include <linux/config.h> /* * Copyright (C) 1994 Hamish Macdonald * * Delay routines, using a pre-computed "loops_per_second" value. */ extern __inline__ void __delay(unsigned long loops) { __asm__ __volatile__ ("1: l.sfeqi %0,0; \ l.bnf 1b; \ l.addi %0,%0,-1;" : "=r" (loops) : "0" (loops)); } extern __inline__ void udelay(unsigned long usecs) { /* Sigh */ __delay(usecs); } #define muldiv(a, b, c) (((a)*(b))/(c)) /* extern __inline__ unsigned long muldiv(unsigned long a, unsigned long b, unsigned long c) { unsigned long tmp; __asm__ ("mulul %2,%0:%1; divul %3,%0:%1" : "=d" (tmp), "=d" (a) : "d" (b), "d" (c), "1" (a)); return a; } */ #endif /* defined(_OR1K_DELAY_H) */
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