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/* Low-level functions for atomic operations.  Stub version.
   Copyright (C) 1997,2001 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
 
   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.
 
   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */
 
#ifndef _ATOMICITY_H
#define _ATOMICITY_H	1
 
#include <inttypes.h>
 
#warning stub atomicity functions are not really atomic
 
static inline int
__attribute__ ((unused))
exchange_and_add (volatile uint32_t *mem, int val)
{
  int result = *mem;
  *mem += val;
  return result;
}
 
static inline void
__attribute__ ((unused))
atomic_add (volatile uint32_t *mem, int val)
{
  *mem += val;
}
 
static inline int
__attribute__ ((unused))
compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
  if (*p != oldval)
    return 0;
 
  *p = newval;
  return 1;
}
 
#endif /* atomicity.h */