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33 lines
741 B
C
33 lines
741 B
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_cortex-m3
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* @{
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*
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* @file atomic_arch.c
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* @brief Implementation of the kernels atomic interface
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*
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* @author Stefan Pfeiffer <stefan.pfeiffer@fu-berlin.de>
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*
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* @}
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*/
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#include "arch/atomic_arch.h"
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#include "irq.h"
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unsigned int atomic_arch_set_return(unsigned int *to_set, unsigned int value)
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{
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disableIRQ();
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unsigned int old = *to_set;
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*to_set = value;
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enableIRQ();
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return old;
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}
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