atomic_and.S revision 1.3 
1/*	$NetBSD: atomic_and.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
33RCSID("$NetBSD: atomic_and.S,v 1.3 2011/08/27 13:23:52 bouyer Exp $")
34
35	.text
36	.set	noreorder
37#ifdef _KERNEL_OPT
38#include "opt_cputype.h"
39#ifndef MIPS3_LOONGSON2F
40	.set	noat
41	.set	nomacro
42#endif
43#else /* _KERNEL_OPT */
44	.set	noat
45	.set	nomacro
46#endif /* _KERNEL_OPT */
47
48
49LEAF(_atomic_and_32)
501:	INT_LL		t0, 0(a0)
51	 nop
52	and		t0, a1
53	INT_SC		t0, 0(a0)
54	beq		t0, zero, 1b
55 	 nop
56	j		ra
57	 nop
58END(_atomic_and_32)
59ATOMIC_OP_ALIAS(atomic_and_32, _atomic_and_32)
60
61LEAF(_atomic_and_32_nv)
621:	INT_LL		v0, 0(a0)
63	 nop
64	and		v0, a1
65	move		t0, v0
66	INT_SC		t0, 0(a0)
67	beq		t0, zero, 1b
68 	 nop
69	j		ra
70	 nop
71END(_atomic_and_32_nv)
72ATOMIC_OP_ALIAS(atomic_and_32_nv, _atomic_and_32_nv)
73
74#if !defined(__mips_o32)
75LEAF(_atomic_and_64)
761:	REG_LL		t0, 0(a0)
77	 nop
78	and		t0, a1
79	REG_SC		t0, 0(a0)
80	beq		t0, zero, 1b
81 	 nop
82	j		ra
83	 nop
84END(_atomic_and_64)
85ATOMIC_OP_ALIAS(atomic_and_64, _atomic_and_64)
86
87LEAF(_atomic_and_64_nv)
881:	REG_LL		v0, 0(a0)
89	 nop
90	and		v0, a1
91	move		t0, v0
92	REG_SC		t0, 0(a0)
93	beq		t0, zero, 1b
94 	 nop
95	j		ra
96	 nop
97END(_atomic_and_64_nv)
98ATOMIC_OP_ALIAS(atomic_and_64_nv, _atomic_and_64_nv)
99#endif
100
101#ifdef _LP64
102STRONG_ALIAS(_atomic_and_ulong,		_atomic_and_64)
103STRONG_ALIAS(_atomic_and_ulong_nv,	_atomic_and_64_nv)
104#else
105STRONG_ALIAS(_atomic_and_ulong,		_atomic_and_32)
106STRONG_ALIAS(_atomic_and_ulong_nv,	_atomic_and_32_nv)
107#endif
108STRONG_ALIAS(_atomic_and_uint,		_atomic_and_32)
109STRONG_ALIAS(_atomic_and_uint_nv,	_atomic_and_32_nv)
110
111ATOMIC_OP_ALIAS(atomic_and_uint,	_atomic_and_uint)
112ATOMIC_OP_ALIAS(atomic_and_uint_nv,	_atomic_and_uint_nv)
113ATOMIC_OP_ALIAS(atomic_and_ulong,	_atomic_and_ulong)
114ATOMIC_OP_ALIAS(atomic_and_ulong_nv,	_atomic_and_ulong_nv)
115