1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2001 Doug Rabson
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/sys/abi_compat.h 360451 2020-04-28 20:14:38Z brooks $
29 */
30
31#ifndef _COMPAT_H_
32#define	_COMPAT_H_
33
34/*
35 * Helper macros for translating objects between different ABIs.
36 */
37
38#define	PTRIN(v)	(void *)(uintptr_t)(v)
39#define	PTROUT(v)	(uintptr_t)(v)
40
41#define	CP(src, dst, fld) do {			\
42	(dst).fld = (src).fld;			\
43} while (0)
44
45#define	CP2(src, dst, sfld, dfld) do {		\
46	(dst).dfld = (src).sfld;		\
47} while (0)
48
49#define	PTRIN_CP(src, dst, fld) do {		\
50	(dst).fld = PTRIN((src).fld);		\
51} while (0)
52
53#define	PTROUT_CP(src, dst, fld) do {		\
54	(dst).fld = PTROUT((src).fld);		\
55} while (0)
56
57#define	TV_CP(src, dst, fld) do {		\
58	CP((src).fld, (dst).fld, tv_sec);	\
59	CP((src).fld, (dst).fld, tv_usec);	\
60} while (0)
61
62#define	TS_CP(src, dst, fld) do {		\
63	CP((src).fld, (dst).fld, tv_sec);	\
64	CP((src).fld, (dst).fld, tv_nsec);	\
65} while (0)
66
67#define	ITS_CP(src, dst) do {			\
68	TS_CP((src), (dst), it_interval);	\
69	TS_CP((src), (dst), it_value);		\
70} while (0)
71
72#define	BT_CP(src, dst, fld) do {				\
73	CP((src).fld, (dst).fld, sec);				\
74	*(uint64_t *)&(dst).fld.frac[0] = (src).fld.frac;	\
75} while (0)
76
77#endif /* !_COMPAT_H_ */
78