1/*	$NetBSD: membar_ops.S,v 1.10 2022/04/09 23:32:51 riastradh Exp $	*/
2/*-
3 * Copyright (c) 2008 The NetBSD Foundation, Inc.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Matt Thomas <matt@3am-software.com>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "atomic_op_asm.h"
32
33#if defined(_ARM_ARCH_6)
34
35ENTRY_NP(_membar_producer)
36	DMBST		/* store-before-store */
37	RET
38END(_membar_producer)
39ATOMIC_OP_ALIAS(membar_producer,_membar_producer)
40ATOMIC_OP_ALIAS(membar_write,_membar_producer)
41STRONG_ALIAS(_membar_write,_membar_producer)
42
43ENTRY_NP(_membar_sync)
44	DMB		/* load/store-before-load/store */
45	RET
46END(_membar_sync)
47ATOMIC_OP_ALIAS(membar_sync,_membar_sync)
48ATOMIC_OP_ALIAS(membar_acquire,_membar_sync)
49ATOMIC_OP_ALIAS(membar_release,_membar_sync)
50ATOMIC_OP_ALIAS(membar_enter,_membar_sync)
51ATOMIC_OP_ALIAS(membar_exit,_membar_sync)
52ATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
53ATOMIC_OP_ALIAS(membar_read,_membar_sync)
54STRONG_ALIAS(__sync_synchronize,_membar_sync)
55STRONG_ALIAS(_membar_acquire,_membar_sync)
56STRONG_ALIAS(_membar_release,_membar_sync)
57STRONG_ALIAS(_membar_enter,_membar_sync)
58STRONG_ALIAS(_membar_exit,_membar_sync)
59STRONG_ALIAS(_membar_consumer,_membar_sync)
60STRONG_ALIAS(_membar_read,_membar_sync)
61
62#endif /* _ARM_ARCH_6 */
63