minix/common/lib/libc/arch/mips/atomic/membar_ops.S

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/* $NetBSD: membar_ops.S,v 1.4 2009/12/14 00:39:00 matt 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, and by Andrew Doran.
*
* 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"
#if defined(_KERNEL)
#ifdef _KERNEL_OPT
#include "opt_cputype.h"
#include "opt_lockdebug.h"
#include "opt_multiprocessor.h"
#endif
#include <machine/cpu.h>
#if (MIPS_HAS_LLSC != 0 && defined(MULTIPROCESSOR)) || !defined(__mips_o32)
#define SYNC sync
#endif
#elif !defined(__mips_o32)
#define SYNC sync
#endif
.text
LEAF(_membar_sync)
j ra
#ifdef SYNC
SYNC
#else
nop
#endif
END(_membar_sync)
#ifdef _KERNEL
STRONG_ALIAS(mb_read, _membar_sync)
STRONG_ALIAS(mb_write, _membar_sync)
STRONG_ALIAS(mb_memory, _membar_sync)
#endif
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_producer,_membar_sync)
STRONG_ALIAS(_membar_producer,_membar_sync)
ATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
STRONG_ALIAS(_membar_consumer,_membar_sync)