1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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 * $FreeBSD$
29 */
30
31#ifdef __i386__		/* Do any other archs not care about alignment ? */
32
33#  define ua_htonl(src, tgt) (*(u_int32_t *)(tgt) = htonl(*(u_int32_t *)(src)))
34#  define ua_ntohl(src, tgt) (*(u_int32_t *)(tgt) = ntohl(*(u_int32_t *)(src)))
35#  define ua_htons(src, tgt) (*(u_int16_t *)(tgt) = htons(*(u_int16_t *)(src)))
36#  define ua_ntohs(src, tgt) (*(u_int16_t *)(tgt) = ntohs(*(u_int16_t *)(src)))
37
38#else	/* We care about alignment (or else drop a core !) */
39
40#  define ua_htonl(src, tgt)				\
41    do {						\
42      u_int32_t __oh;					\
43      memcpy(&__oh, (src), sizeof __oh);		\
44      *(u_char *)(tgt) = __oh >> 24;			\
45      *((u_char *)(tgt) + 1) = (__oh >> 16) & 0xff;	\
46      *((u_char *)(tgt) + 2) = (__oh >> 8) & 0xff;	\
47      *((u_char *)(tgt) + 3) = __oh & 0xff;		\
48    } while (0)
49
50#  define ua_ntohl(src, tgt)				\
51    do {						\
52      u_int32_t __nh;					\
53      __nh = ((u_int32_t)*(u_char *)(src) << 24) |	\
54          ((u_int32_t)*((u_char *)(src) + 1) << 16) |	\
55          ((u_int32_t)*((u_char *)(src) + 2) << 8) |	\
56          (u_int32_t)*((u_char *)(src) + 3);		\
57      memcpy((tgt), &__nh, sizeof __nh);		\
58    } while (0)
59
60#  define ua_htons(src, tgt)				\
61    do {						\
62      u_int16_t __oh;					\
63      memcpy(&__oh, (src), sizeof __oh);		\
64      *(u_char *)(tgt) = __oh >> 8;			\
65      *((u_char *)(tgt) + 1) = __oh & 0xff;		\
66    } while (0)
67
68#  define ua_ntohs(src, tgt)				\
69    do {						\
70      u_int16_t __nh;					\
71      __nh = ((u_int16_t)*(u_char *)(src) << 8) |	\
72          (u_int16_t)*((u_char *)(src) + 1);		\
73      memcpy((tgt), &__nh, sizeof __nh);		\
74    } while (0)
75
76#endif
77