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/**
* Native CPU atomic.h implementation
*
* Copyright (C) 2013 Ludwig Ortmann <ludwig.ortmann@fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*
* @ingroup arch
* @{
* @file
* @author Ludwig Ortmann <ludwig.ortmann@fu-berlin.de>
* @}
*/
#include "atomic.h"
#include "irq.h"
#include "debug.h"
unsigned int atomic_set_return(unsigned int *val, unsigned int set)
{
unsigned int old_val;
unsigned int old_state;
DEBUG("atomic_set_return\n");
old_state = disableIRQ();
old_val = *val;
*val = set;
restoreIRQ(old_state);
return old_val;
}