1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2019 Justin Hibbits
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD$
28 */
29
30#ifndef _SYS_ATOMIC64E_H_
31#define _SYS_ATOMIC64E_H_
32
33#ifndef _MACHINE_ATOMIC_H_
34#error	"This should not be included directly.  Include <machine/atomic.h>"
35#endif
36
37#ifdef _KERNEL
38#define	HAS_EMULATED_ATOMIC64
39
40/* Emulated versions of 64-bit atomic operations. */
41
42void	atomic_add_64(volatile u_int64_t *, u_int64_t);
43#define	atomic_add_acq_64	atomic_add_64
44#define	atomic_add_rel_64	atomic_add_64
45
46int	atomic_cmpset_64(volatile u_int64_t *, u_int64_t, u_int64_t);
47#define	atomic_cmpset_acq_64	atomic_cmpset_64
48#define	atomic_cmpset_rel_64	atomic_cmpset_64
49
50void	atomic_clear_64(volatile u_int64_t *, u_int64_t);
51#define	atomic_clear_acq_64	atomic_clear_64
52#define	atomic_clear_rel_64	atomic_clear_64
53
54int	atomic_fcmpset_64(volatile u_int64_t *, u_int64_t *, u_int64_t);
55#define	atomic_fcmpset_acq_64	atomic_fcmpset_64
56#define	atomic_fcmpset_rel_64	atomic_fcmpset_64
57
58u_int64_t atomic_fetchadd_64(volatile u_int64_t *, u_int64_t);
59
60u_int64_t	atomic_load_64(volatile u_int64_t *);
61#define	atomic_load_acq_64	atomic_load_64
62
63void	atomic_readandclear_64(volatile u_int64_t *);
64
65void	atomic_set_64(volatile u_int64_t *, u_int64_t);
66#define	atomic_set_acq_64	atomic_set_64
67#define	atomic_set_rel_64	atomic_set_64
68
69void	atomic_subtract_64(volatile u_int64_t *, u_int64_t);
70#define	atomic_subtract_acq_64	atomic_subtract_64
71#define	atomic_subtract_rel_64	atomic_subtract_64
72
73void	atomic_store_64(volatile u_int64_t *, u_int64_t);
74#define	atomic_store_rel_64	atomic_store_64
75
76u_int64_t atomic_swap_64(volatile u_int64_t *, u_int64_t);
77
78#endif /* _KERNEL */
79#endif /* _SYS_ATOMIC64E_H_ */
80