b1c4ba4ab6
Due to the ABI we are using we have to use the earm architecture moniker for the build system to behave correctly. This involves then some headers to move around. There is also a few related Makefile updates as well as minor source code corrections.
55 lines
2 KiB
C
55 lines
2 KiB
C
/* $NetBSD: rwlock.h,v 1.5 2008/04/28 20:23:14 martin Exp $ */
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/*-
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* Copyright (c) 2002, 2006 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 and Andrew Doran.
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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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#ifndef _ARM_RWLOCK_H_
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#define _ARM_RWLOCK_H_
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struct krwlock {
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volatile uintptr_t rw_owner;
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};
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#ifdef __RWLOCK_PRIVATE
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#define __HAVE_SIMPLE_RW_LOCKS 1
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#define RW_RECEIVE(rw) /* nothing */
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#define RW_GIVE(rw) /* nothing */
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unsigned long _lock_cas(volatile unsigned long *,
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unsigned long, unsigned long);
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#define RW_CAS(p, o, n) \
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(_lock_cas((volatile unsigned long *)(p), (o), (n)) == (o))
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#endif /* __RWLOCK_PRIVATE */
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#endif /* _ARM_RWLOCK_H_ */
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