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/* $NetBSD: membar_ops.S,v 1.7 2015/01/08 22:27:17 riastradh Exp $ */
/*-
* Copyright (c) 2006, 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include "atomic_op_asm.h"
.text
#ifdef _KERNEL
/*
* We start out with no-op versions that do nothing. We hot-patch when
* we detect a MP system.
*/
LEAF(_membar_producer, 0)
RET
nop
END(_membar_producer)
EXPORT(_membar_producer_end)
LEAF(_membar_sync, 0)
RET
nop
END(_membar_sync)
EXPORT(_membar_sync_end)
LEAF(_membar_producer_mp, 0)
wmb
RET
END(_membar_producer_mp)
EXPORT(_membar_producer_mp_end)
LEAF(_membar_sync_mp, 0)
mb
RET
END(_membar_sync_mp)
EXPORT(_membar_sync_mp_end)
#else /* _KERNEL */
LEAF(_membar_producer, 0)
mb
RET
END(_membar_producer)
EXPORT(_membar_producer_end)
LEAF(_membar_sync, 0)
mb
RET
END(_membar_sync)
EXPORT(_membar_sync_end)
#endif /* _KERNEL */
ATOMIC_OP_ALIAS(membar_producer,_membar_producer)
ATOMIC_OP_ALIAS(membar_sync,_membar_sync)
ATOMIC_OP_ALIAS(membar_enter,_membar_sync)
STRONG_ALIAS(_membar_enter,_membar_sync)
ATOMIC_OP_ALIAS(membar_exit,_membar_sync)
STRONG_ALIAS(_membar_exit,_membar_sync)
ATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
STRONG_ALIAS(_membar_consumer,_membar_sync)
ATOMIC_OP_ALIAS(membar_datadep_consumer,_membar_sync)
STRONG_ALIAS(_membar_datadep_consumer,_membar_sync)
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