From 35bd4eb1d8aec7bdf0d494132d6023a7f2ec21d2 Mon Sep 17 00:00:00 2001 From: George Oikonomou Date: Sun, 3 Dec 2017 17:51:10 +0000 Subject: [PATCH] Provide memory barrier for all Cortex-M CPUs --- arch/cpu/arm/cortex-m/memory-barrier-cortex.h | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 arch/cpu/arm/cortex-m/memory-barrier-cortex.h diff --git a/arch/cpu/arm/cortex-m/memory-barrier-cortex.h b/arch/cpu/arm/cortex-m/memory-barrier-cortex.h new file mode 100644 index 000000000..ae0177cf1 --- /dev/null +++ b/arch/cpu/arm/cortex-m/memory-barrier-cortex.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2017, George Oikonomou - http://www.spd.gr + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/*---------------------------------------------------------------------------*/ +#ifndef MEMORY_BARRIER_CORTEX_H_ +#define MEMORY_BARRIER_CORTEX_H_ +/*---------------------------------------------------------------------------*/ +#include "contiki.h" + +#ifdef CMSIS_CONF_HEADER_PATH +#include CMSIS_CONF_HEADER_PATH +#endif +/*---------------------------------------------------------------------------*/ +#define memory_barrier() __DMB() +/*---------------------------------------------------------------------------*/ +#endif /* MEMORY_BARRIER_CORTEX_H_ */ +/*---------------------------------------------------------------------------*/