30 lines
947 B
C
30 lines
947 B
C
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/* FR-V CPU memory barrier definitions
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*
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* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_BARRIER_H
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#define _ASM_BARRIER_H
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#define nop() asm volatile ("nop"::)
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#define mb() asm volatile ("membar" : : :"memory")
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#define rmb() asm volatile ("membar" : : :"memory")
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#define wmb() asm volatile ("membar" : : :"memory")
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#define read_barrier_depends() do { } while (0)
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#define smp_mb() barrier()
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#define smp_rmb() barrier()
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#define smp_wmb() barrier()
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#define smp_read_barrier_depends() do {} while(0)
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#define set_mb(var, value) \
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do { var = (value); barrier(); } while (0)
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#endif /* _ASM_BARRIER_H */
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