bits.h

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/*
 * Some of this code has been taken from bitops.h
 * Copyright 1992, Linus Torvalds.
 *
 * Others functions has been added by
 * Miguel Masmano Tello <mmasmano@disca.upv.es>
 * Copyright (C) Feb, 2003 OCERA Consortium
 * Release under the terms of the GNU General Public License Version 2
 */

#define ADDR (*(volatile long *) addr)

static __inline__ int TLSF_ffs(int x)
{
        int r;

        __asm__("bsfl %1,%0\n\t"
                "jnz 1f\n\t"
                "movl $-1,%0\n"
                "1:" : "=r" (r) : "g" (x));
        return r;
}


static __inline__ int TLSF_fls(int x)
{
        int r;

        __asm__("bsrl %1,%0\n\t"
                "jnz 1f\n\t"
                "movl $-1,%0\n"
                "1:" : "=r" (r) : "g" (x));
        return r;
}

/*
static __inline__ void __set_bit(int nr, volatile void * addr)
{
        __asm__(
                "btsl %1,%0"
                :"=m" (ADDR)
                :"Ir" (nr));
}
*/
static __inline__ void __clear_bit(int nr, volatile void * addr)
{
        __asm__ __volatile__( 
                "btrl %1,%0"
                :"=m" (ADDR)
                :"Ir" (nr));
}

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