1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
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 * 3. Neither the name of the author nor the names of any co-contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#include <stdio.h>
36
37#include "spinlock.h"
38#include "libc_private.h"
39
40long _atomic_lock_stub(volatile long *);
41void _spinlock_stub(spinlock_t *);
42void _spinunlock_stub(spinlock_t *);
43
44__weak_reference(_atomic_lock_stub, _atomic_lock);
45
46long
47_atomic_lock_stub(volatile long *lck __unused)
48{
49	return (0L);
50}
51
52#pragma weak _spinlock
53void
54_spinlock(spinlock_t *lck)
55{
56
57	((void (*)(spinlock_t *lck))__libc_interposing[INTERPOS_spinlock])
58	    (lck);
59
60}
61
62#pragma weak _spinunlock
63void
64_spinunlock(spinlock_t *lck)
65{
66
67	((void (*)(spinlock_t *lck))__libc_interposing[INTERPOS_spinunlock])
68	    (lck);
69
70}
71
72void
73__libc_spinlock_stub(spinlock_t *lck __unused)
74{
75}
76
77void
78__libc_spinunlock_stub(spinlock_t *lck __unused)
79{
80}
81