1/*        $NetBSD: atomic_add.S,v 1.5 2022/04/06 22:47:55 riastradh Exp $       */
2
3/*-
4 * Copyright (c) 2007 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.
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
34          .text
35
36LEAF(_atomic_add_32, 2)
371:        ldl_l     t1, 0(a0)
38          addl      t1, a1, t2
39          stl_c     t2, 0(a0)
40          beq       t2, 2f
41          RET
422:        br        1b
43          END(_atomic_add_32)
44ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32)
45ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32)
46STRONG_ALIAS(_atomic_add_int,_atomic_add_32)
47
48LEAF(_atomic_add_32_nv, 2)
491:        ldl_l     t1, 0(a0)
50          addl      t1, a1, t2
51          mov       t2, v0
52          stl_c     t2, 0(a0)
53          beq       t2, 2f
54          RET
552:        br        1b
56          END(_atomic_add_32_nv)
57ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv)
58ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv)
59STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv)
60
61LEAF(_atomic_add_64, 2)
621:        ldq_l     t1, 0(a0)
63          addq      t1, a1, t2
64          stq_c     t2, 0(a0)
65          beq       t2, 2f
66          RET
672:        br        1b
68          END(_atomic_add_64)
69ATOMIC_OP_ALIAS(atomic_add_64,_atomic_add_64)
70ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_64)
71STRONG_ALIAS(_atomic_add_long,_atomic_add_64)
72ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_64)
73STRONG_ALIAS(_atomic_add_ptr,_atomic_add_64)
74
75LEAF(_atomic_add_64_nv, 2)
761:        ldq_l     t1, 0(a0)
77          addq      t1, a1, t2
78          mov       t2, v0
79          stq_c     t2, 0(a0)
80          beq       t2, 2f
81          RET
822:        br        1b
83          END(_atomic_add_64_nv)
84ATOMIC_OP_ALIAS(atomic_add_64_nv,_atomic_add_64_nv)
85ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_64_nv)
86STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_64_nv)
87ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_64_nv)
88STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_64_nv)
89