90 lines
2.6 KiB
ArmAsm
90 lines
2.6 KiB
ArmAsm
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/* $NetBSD: membar_ops.S,v 1.6 2008/05/25 15:56:11 chs Exp $ */
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/*-
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* Copyright (c) 2006, 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "atomic_op_asm.h"
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.text
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#ifdef _KERNEL
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/*
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* We start out with no-op versions that do nothing. We hot-patch when
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* we detect a MP system.
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*/
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LEAF(_membar_producer, 0)
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RET
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nop
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END(_membar_producer)
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EXPORT(_membar_producer_end)
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LEAF(_membar_sync, 0)
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RET
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nop
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END(_membar_sync)
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EXPORT(_membar_sync_end)
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LEAF(_membar_producer_mp, 0)
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wmb
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RET
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END(_membar_producer_mp)
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EXPORT(_membar_producer_mp_end)
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LEAF(_membar_sync_mp, 0)
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mb
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RET
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END(_membar_sync_mp)
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EXPORT(_membar_sync_mp_end)
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#else /* _KERNEL */
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LEAF(_membar_producer, 0)
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mb
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RET
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END(_membar_producer)
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EXPORT(_membar_producer_end)
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LEAF(_membar_sync, 0)
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mb
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RET
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END(_membar_sync)
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EXPORT(_membar_sync_end)
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#endif /* _KERNEL */
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ATOMIC_OP_ALIAS(membar_producer,_membar_producer)
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ATOMIC_OP_ALIAS(membar_sync,_membar_sync)
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ATOMIC_OP_ALIAS(membar_enter,_membar_sync)
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STRONG_ALIAS(_membar_enter,_membar_sync)
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ATOMIC_OP_ALIAS(membar_exit,_membar_sync)
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STRONG_ALIAS(_membar_exit,_membar_sync)
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ATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
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STRONG_ALIAS(_membar_consumer,_membar_sync)
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