1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 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
29#ifndef _COMPAT_H_
30#define	_COMPAT_H_
31
32/*
33 * Helper macros for translating objects between different ABIs.
34 */
35
36#define	PTRIN(v)	(void *)(uintptr_t)(v)
37#define	PTROUT(v)	(uintptr_t)(v)
38
39#define	CP(src, dst, fld) do {			\
40	(dst).fld = (src).fld;			\
41} while (0)
42
43#define	CP2(src, dst, sfld, dfld) do {		\
44	(dst).dfld = (src).sfld;		\
45} while (0)
46
47#define	PTRIN_CP(src, dst, fld) do {		\
48	(dst).fld = PTRIN((src).fld);		\
49} while (0)
50
51#define	PTROUT_CP(src, dst, fld) do {		\
52	(dst).fld = PTROUT((src).fld);		\
53} while (0)
54
55#define	TV_CP(src, dst, fld) do {		\
56	CP((src).fld, (dst).fld, tv_sec);	\
57	CP((src).fld, (dst).fld, tv_usec);	\
58} while (0)
59
60#define	TS_CP(src, dst, fld) do {		\
61	CP((src).fld, (dst).fld, tv_sec);	\
62	CP((src).fld, (dst).fld, tv_nsec);	\
63} while (0)
64
65#define	ITS_CP(src, dst) do {			\
66	TS_CP((src), (dst), it_interval);	\
67	TS_CP((src), (dst), it_value);		\
68} while (0)
69
70#define	BT_CP(src, dst, fld) do {				\
71	CP((src).fld, (dst).fld, sec);				\
72	*(uint64_t *)&(dst).fld.frac[0] = (src).fld.frac;	\
73} while (0)
74
75#endif /* !_COMPAT_H_ */