atomic_or.S revision 1.3 
1/*	$NetBSD: atomic_or.S,v 1.3 2011/08/27 13:23:52 bouyer Exp $	*/
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30#include <machine/asm.h>
31#include "atomic_op_asm.h"
32
33	.text
34	.set	noreorder
35#ifdef _KERNEL_OPT
36#include "opt_cputype.h"
37#ifndef MIPS3_LOONGSON2F
38	.set	noat
39	.set	nomacro
40#endif
41#else /* _KERNEL_OPT */
42	.set	noat
43	.set	nomacro
44#endif /* _KERNEL_OPT */
45
46LEAF(_atomic_or_32)
471:	INT_LL		t0, 0(a0)
48	 nop
49	or		t0, a1
50	INT_SC		t0, 0(a0)
51	beq		t0, zero, 1b
52 	 nop
53	j		ra
54	 nop
55END(_atomic_or_32)
56ATOMIC_OP_ALIAS(atomic_or_32, _atomic_or_32)
57
58LEAF(_atomic_or_32_nv)
591:	INT_LL		v0, 0(a0)
60	 nop
61	or		v0, a1
62	move		t0, v0
63	INT_SC		t0, 0(a0)
64	beq		t0, zero, 1b
65 	 nop
66	j		ra
67	 nop
68END(_atomic_or_32_nv)
69ATOMIC_OP_ALIAS(atomic_or_32_nv, _atomic_or_32_nv)
70
71#if !defined(__mips_o32)
72LEAF(_atomic_or_64)
731:	REG_LL		t0, 0(a0)
74	 nop
75	or		t0, a1
76	REG_SC		t0, 0(a0)
77	beq		t0, zero, 1b
78 	 nop
79	j		ra
80	 nop
81END(_atomic_or_64)
82ATOMIC_OP_ALIAS(atomic_or_64, _atomic_or_64)
83
84LEAF(_atomic_or_64_nv)
851:	REG_LL		v0, 0(a0)
86	 nop
87	or		v0, a1
88	move		t0, v0
89	REG_SC		t0, 0(a0)
90	beq		t0, zero, 1b
91 	 nop
92	j		ra
93	 nop
94END(_atomic_or_64_nv)
95ATOMIC_OP_ALIAS(atomic_or_64_nv, _atomic_or_64_nv)
96#endif
97
98#ifdef _LP64
99STRONG_ALIAS(_atomic_or_ulong,		_atomic_or_64)
100STRONG_ALIAS(_atomic_or_ulong_nv,	_atomic_or_64_nv)
101#else
102STRONG_ALIAS(_atomic_or_ulong,		_atomic_or_32)
103STRONG_ALIAS(_atomic_or_ulong_nv,	_atomic_or_32_nv)
104#endif
105STRONG_ALIAS(_atomic_or_uint,		_atomic_or_32)
106STRONG_ALIAS(_atomic_or_uint_nv,	_atomic_or_32_nv)
107
108ATOMIC_OP_ALIAS(atomic_or_uint,		_atomic_or_uint)
109ATOMIC_OP_ALIAS(atomic_or_uint_nv,	_atomic_or_uint_nv)
110ATOMIC_OP_ALIAS(atomic_or_ulong,	_atomic_or_ulong)
111ATOMIC_OP_ALIAS(atomic_or_ulong_nv,	_atomic_or_ulong_nv)
112