38 lines
959 B
C
38 lines
959 B
C
/*
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* \brief ARMv7-specific part of the Linux API emulation
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* \author Christian Prochaska
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* \date 2014-05-28
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*/
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/*
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* Copyright (C) 2014 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _ARMV7__PLATFORM__LX_EMUL_BARRIER_H_
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#define _ARMV7__PLATFORM__LX_EMUL_BARRIER_H_
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/*******************
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** asm/barrier.h **
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*******************/
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/*
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* This is the "safe" implementation as needed for a configuration
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* with bufferable DMA memory and SMP enabled.
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*/
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#define mb() asm volatile ("dsb": : :"memory")
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#define rmb() mb()
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#define wmb() asm volatile ("dsb st": : :"memory")
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#define smp_mb() asm volatile ("dmb ish": : :"memory")
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#define smp_rmb() smp_mb()
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#define smp_wmb() asm volatile ("dmb ishst": : :"memory")
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static inline void barrier() { asm volatile ("": : :"memory"); }
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#endif /* _ARMV7__PLATFORM__LX_EMUL_BARRIER_H_ */
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