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32 lines
741 B
32 lines
741 B
/* |
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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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