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[/] [or1k/] [trunk/] [uclinux/] [uC-libc/] [include/] [asm/] [delay.h] - Blame information for rev 1765

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1 199 simons
#ifndef _OR1K_DELAY_H
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#define _OR1K_DELAY_H
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extern unsigned long loops_per_sec;
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#include <linux/kernel.h>
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#include <linux/config.h>
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/*
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 * Copyright (C) 1994 Hamish Macdonald
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 *
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 * Delay routines, using a pre-computed "loops_per_second" value.
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 */
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extern __inline__ void __delay(unsigned long loops)
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{
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        __asm__ __volatile__ ("1: l.sfeqi %0,0; \
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                                l.bnf   1b; \
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                                l.addi %0,%0,-1;"
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                                : "=r" (loops) : "0" (loops));
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}
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extern __inline__ void udelay(unsigned long usecs)
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{
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        /* Sigh */
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        __delay(usecs);
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}
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#define muldiv(a, b, c)    (((a)*(b))/(c))
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/*
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extern __inline__ unsigned long muldiv(unsigned long a, unsigned long b, unsigned long c)
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{
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        unsigned long tmp;
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        __asm__ ("mulul %2,%0:%1; divul %3,%0:%1"
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                : "=d" (tmp), "=d" (a)
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                : "d" (b), "d" (c), "1" (a));
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        return a;
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}
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*/
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#endif /* defined(_OR1K_DELAY_H) */

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