1/*	$NetBSD: membar_ops.S,v 1.4 2009/12/14 00:39:00 matt Exp $	*/
2
3/*-
4 * Copyright (c) 2006, 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe, and by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "atomic_op_asm.h"
33
34#if defined(_KERNEL)
35
36#ifdef _KERNEL_OPT
37#include "opt_cputype.h"
38#include "opt_lockdebug.h"
39#include "opt_multiprocessor.h"
40#endif
41
42
43#include <machine/cpu.h>
44
45#if (MIPS_HAS_LLSC != 0 && defined(MULTIPROCESSOR)) || !defined(__mips_o32)
46#define	SYNC		sync
47#endif
48#elif !defined(__mips_o32)
49#define	SYNC		sync
50#endif
51
52	.text
53
54LEAF(_membar_sync)
55	j	ra
56#ifdef SYNC
57	SYNC
58#else
59	  nop
60#endif
61END(_membar_sync)
62
63#ifdef _KERNEL
64STRONG_ALIAS(mb_read, _membar_sync)
65STRONG_ALIAS(mb_write, _membar_sync)
66STRONG_ALIAS(mb_memory, _membar_sync)
67#endif
68
69ATOMIC_OP_ALIAS(membar_sync,_membar_sync)
70ATOMIC_OP_ALIAS(membar_enter,_membar_sync)
71STRONG_ALIAS(_membar_enter,_membar_sync)
72ATOMIC_OP_ALIAS(membar_exit,_membar_sync)
73STRONG_ALIAS(_membar_exit,_membar_sync)
74ATOMIC_OP_ALIAS(membar_producer,_membar_sync)
75STRONG_ALIAS(_membar_producer,_membar_sync)
76ATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
77STRONG_ALIAS(_membar_consumer,_membar_sync)
78