1/*	$NetBSD: atomic_cas_64.S,v 1.2 2015/03/27 06:42:37 matt Exp $	*/
2/*-
3 * Copyright (c) 2014 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#ifdef _LP64
32#include "atomic_op_asm.h"
33
34ENTRY_NP(_atomic_cas_64)
35	mv	t0, a0
361:	lr.d	a0, 0(t0)
37	bne	a1, a0, 2f
38	sc.d	t1, a2, 0(t0)
39	bnez	t1, 1b
402:
41	ret
42END(_atomic_cas_64)
43
44ATOMIC_OP_ALIAS(atomic_cas_64,_atomic_cas_64)
45ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_64)
46STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_64)
47ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_64)
48STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_64)
49ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_64)
50STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_64)
51ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_64)
52STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_64)
53
54CRT_ALIAS(__sync_val_compare_and_swap_8,_atomic_cas_64)
55
56ENTRY_NP(_atomic_bool_cas_64)
57	mv	t0, a0
58	li	a0, 0
591:	lr.d	t1, 0(t0)
60	bne	a1, t1, 2f
61	sc.d	t1, a2, 0(t0)
62	bnez	t1, 1b
63	li	a0, 1
642:
65	ret
66END(_atomic_bool_cas_64)
67
68ATOMIC_OP_ALIAS(atomic_bool_cas_64,_atomic_bool_cas_64)
69CRT_ALIAS(__bool_val_compare_and_swap_8,_atomic_bool_cas_64)
70#endif /* _LP64 */
71