1/*	$NetBSD: atomic_add_32.S,v 1.1 2014/09/03 19:34:25 matt Exp $	*/
2
3/*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
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_sub_32)
35	l.sub	r4, r0, r4		/* negate */
36	/* FALLTHROUGH */
37ENTRY_NP(_atomic_add_32)
381:	l.lwa	r11, 0(r3)		/* load old value */
39	l.add	r5, r11, r4		/* calculate new value */
40	l.swa	0(r3), r5		/* try to store */
41	l.bnf	1b			/*   succeed? no, try again */
42	l.nop				/* -- delay slot -- */
43	l.jr	lr			/* return old value */
44	l.nop
45END(_atomic_add_32)
46END(_atomic_sub_32)
47
48ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32)
49ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32)
50ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_32)
51ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_32)
52CRT_ALIAS(__sync_fetch_and_add_4,_atomic_add_32)
53CRT_ALIAS(__atomic_fetch_add_4,_atomic_add_32)
54STRONG_ALIAS(_atomic_add_int,_atomic_add_32)
55STRONG_ALIAS(_atomic_add_long,_atomic_add_32)
56STRONG_ALIAS(_atomic_add_ptr,_atomic_add_32)
57
58ATOMIC_OP_ALIAS(atomic_sub_32,_atomic_sub_32)
59ATOMIC_OP_ALIAS(atomic_sub_int,_atomic_sub_32)
60ATOMIC_OP_ALIAS(atomic_sub_long,_atomic_sub_32)
61ATOMIC_OP_ALIAS(atomic_sub_ptr,_atomic_sub_32)
62CRT_ALIAS(__sync_fetch_and_sub_4,_atomic_sub_32)
63CRT_ALIAS(__atomic_fetch_sub_4,_atomic_sub_32)
64STRONG_ALIAS(_atomic_sub_int,_atomic_sub_32)
65STRONG_ALIAS(_atomic_sub_long,_atomic_sub_32)
66STRONG_ALIAS(_atomic_sub_ptr,_atomic_sub_32)
67
68ENTRY_NP(_atomic_sub_32_nv)
69	l.sub	r4, r0, r4		/* negate */
70	/* FALLTHROUGH */
71ENTRY_NP(_atomic_add_32_nv)
721:	l.lwa	r5, 0(r3)		/* load old value */
73	l.add	r11, r5, r4		/* calculate new value */
74	l.swa	0(r3), r11		/* try to store */
75	l.bnf	1b			/*   succeed? no, try again */
76	l.nop				/* -- delay slot -- */
77	l.jr	lr			/* return old value */
78	l.nop
79END(_atomic_add_32_nv)
80END(_atomic_sub_32_nv)
81ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv)
82ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv)
83ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_32_nv)
84ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_32_nv)
85CRT_ALIAS(__sync_add_and_fetch_4,_atomic_add_32_nv)
86STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv)
87STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_32_nv)
88STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_32_nv)
89
90ATOMIC_OP_ALIAS(atomic_sub_32_nv,_atomic_sub_32_nv)
91ATOMIC_OP_ALIAS(atomic_sub_int_nv,_atomic_sub_32_nv)
92ATOMIC_OP_ALIAS(atomic_sub_long_nv,_atomic_sub_32_nv)
93ATOMIC_OP_ALIAS(atomic_sub_ptr_nv,_atomic_sub_32_nv)
94CRT_ALIAS(__sync_sub_and_fetch_4,_atomic_sub_32_nv)
95STRONG_ALIAS(_atomic_sub_int_nv,_atomic_sub_32_nv)
96STRONG_ALIAS(_atomic_sub_long_nv,_atomic_sub_32_nv)
97STRONG_ALIAS(_atomic_sub_ptr_nv,_atomic_sub_32_nv)
98