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/* atops.h: Atomic SPARC operations.

 *

 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)

 */

#ifndef _SPARC_ATOPS_H

#define _SPARC_ATOPS_H

#ifdef __SMP__

extern __inline volatile unsigned char ldstub(volatile unsigned char *lock)

{

        volatile unsigned char retval;

        __asm__ __volatile__("ldstub [%1], %0\n\t" :

                             "=&r" (retval) :

                             "r" (lock));

        return retval;

}

#endif

#endif