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#ifndef _ASM_GENERIC_BITOPS_H_

#define _ASM_GENERIC_BITOPS_H_

/*

 * For the benefit of those who are trying to port Linux to another

 * architecture, here are some C-language equivalents.  You should

 * recode these in the native assembly language, if at all possible.

 * To guarantee atomicity, these routines call cli() and sti() to

 * disable interrupts while they operate.  (You have to provide inline

 * routines to cli() and sti().)

 *

 * Also note, these routines assume that you have 32 bit integers.

 * You will have to change this if you are trying to port Linux to the

 * Alpha architecture or to a Cray.  :-)

 *

 * C language equivalents written by Theodore Ts'o, 9/26/92

 */

extern __inline__ int set_bit(int nr,int * addr)

{

        int     mask, retval;

        addr += nr >> 5;

        mask = 1 << (nr & 0x1f);

        cli();

        retval = (mask & *addr) != 0;

        *addr |= mask;

        sti();

        return retval;

}

extern __inline__ int clear_bit(int nr, int * addr)

{

        int     mask, retval;

        addr += nr >> 5;

        mask = 1 << (nr & 0x1f);

        cli();

        retval = (mask & *addr) != 0;

        *addr &= ~mask;

        sti();

        return retval;

}

extern __inline__ int test_bit(int nr, int * addr)

{

        int     mask;

        addr += nr >> 5;

        mask = 1 << (nr & 0x1f);

        return ((mask & *addr) != 0);

}

#endif /* _ASM_GENERIC_BITOPS_H */