1/*	$NetBSD: atomic_swap_32.S,v 1.1 2014/09/03 19:34:25 matt Exp $	*/
2
3/*-
4 * Copyright (c) 2007,2012 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 Matt Thomas.
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
34ENTRY_NP(_atomic_swap_32)
351:	l.lwa	r11, 0(r3)
36	l.swa	0(r3), r4
37	l.bnf	1b
38	l.nop
392:	l.jr	lr
40	l.nop
41END(_atomic_swap_32)
42
43ATOMIC_OP_ALIAS(atomic_swap_32,_atomic_swap_32)
44ATOMIC_OP_ALIAS(atomic_swap_uint,_atomic_swap_32)
45ATOMIC_OP_ALIAS(atomic_swap_ulong,_atomic_swap_32)
46ATOMIC_OP_ALIAS(atomic_swap_ptr,_atomic_swap_32)
47CRT_ALIAS(__sync_lock_test_and_set_4,_atomic_swap_32)
48CRT_ALIAS(__atomic_exchange_4,_atomic_swap_32)
49STRONG_ALIAS(_atomic_swap_uint,_atomic_swap_32)
50STRONG_ALIAS(_atomic_swap_ulong,_atomic_swap_32)
51STRONG_ALIAS(_atomic_swap_ptr,_atomic_swap_32)
52
53#if (!defined(_KERNEL) || defined(_RUMPKERNEL)) && !defined(_STANDALONE)
54ENTRY_NP(__sync_lock_release_4)
55	l.sw	0(r3), r0
56	l.jr	lr
57	l.nop
58END(__sync_lock_release_4)
59#endif
60