1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/* $NetBSD: atomic_cas.S,v 1.4 2015/06/01 23:16:54 matt Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <machine/asm.h>
#include "atomic_op_asm.h"
RCSID("$NetBSD: atomic_cas.S,v 1.4 2015/06/01 23:16:54 matt Exp $")
.text
.set noat
.set noreorder
.set nomacro
LEAF(_atomic_cas_32)
1: INT_LL v0, 0(a0)
nop
bne v0, a1, 2f
nop
move t0, a2
INT_SC t0, 0(a0)
beq t0, zero, 1b
nop
move v0, a1
#ifdef _MIPS_ARCH_OCTEONP
syncw
#endif
2:
j ra
nop
END(_atomic_cas_32)
ATOMIC_OP_ALIAS(atomic_cas_32, _atomic_cas_32)
#if !defined(__mips_o32)
LEAF(_atomic_cas_64)
1: REG_LL v0, 0(a0)
nop
bne v0, a1, 2f
nop
move t0, a2
REG_SC t0, 0(a0)
beq t0, zero, 1b
nop
move v0, a1
#ifdef _MIPS_ARCH_OCTEONP
syncw
#endif
2:
j ra
nop
END(_atomic_cas_64)
ATOMIC_OP_ALIAS(atomic_cas_64, _atomic_cas_64)
#endif
#ifdef _LP64
STRONG_ALIAS(_atomic_cas_ptr, _atomic_cas_64)
STRONG_ALIAS(_atomic_cas_ptr_ni, _atomic_cas_64)
STRONG_ALIAS(_atomic_cas_ulong, _atomic_cas_64)
STRONG_ALIAS(_atomic_cas_ulong_ni, _atomic_cas_64)
#else
STRONG_ALIAS(_atomic_cas_ptr, _atomic_cas_32)
STRONG_ALIAS(_atomic_cas_ptr_ni, _atomic_cas_32)
STRONG_ALIAS(_atomic_cas_ulong, _atomic_cas_32)
STRONG_ALIAS(_atomic_cas_ulong_ni, _atomic_cas_32)
#endif
STRONG_ALIAS(_atomic_cas_uint, _atomic_cas_32)
STRONG_ALIAS(_atomic_cas_uint_ni, _atomic_cas_32)
ATOMIC_OP_ALIAS(atomic_cas_ptr, _atomic_cas_ptr)
ATOMIC_OP_ALIAS(atomic_cas_ptr_ni, _atomic_cas_ptr_ni)
ATOMIC_OP_ALIAS(atomic_cas_uint, _atomic_cas_uint)
ATOMIC_OP_ALIAS(atomic_cas_uint_ni, _atomic_cas_uint_ni)
ATOMIC_OP_ALIAS(atomic_cas_ulong, _atomic_cas_ulong)
ATOMIC_OP_ALIAS(atomic_cas_ulong_ni, _atomic_cas_ulong_ni)
|
