1/*-
2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: releng/11.0/usr.sbin/ppp/ua.h 50479 1999-08-28 01:35:59Z peter $
27 */
28
29#ifdef __i386__		/* Do any other archs not care about alignment ? */
30
31#  define ua_htonl(src, tgt) (*(u_int32_t *)(tgt) = htonl(*(u_int32_t *)(src)))
32#  define ua_ntohl(src, tgt) (*(u_int32_t *)(tgt) = ntohl(*(u_int32_t *)(src)))
33#  define ua_htons(src, tgt) (*(u_int16_t *)(tgt) = htons(*(u_int16_t *)(src)))
34#  define ua_ntohs(src, tgt) (*(u_int16_t *)(tgt) = ntohs(*(u_int16_t *)(src)))
35
36#else	/* We care about alignment (or else drop a core !) */
37
38#  define ua_htonl(src, tgt)				\
39    do {						\
40      u_int32_t __oh;					\
41      memcpy(&__oh, (src), sizeof __oh);		\
42      *(u_char *)(tgt) = __oh >> 24;			\
43      *((u_char *)(tgt) + 1) = (__oh >> 16) & 0xff;	\
44      *((u_char *)(tgt) + 2) = (__oh >> 8) & 0xff;	\
45      *((u_char *)(tgt) + 3) = __oh & 0xff;		\
46    } while (0)
47
48#  define ua_ntohl(src, tgt)				\
49    do {						\
50      u_int32_t __nh;					\
51      __nh = ((u_int32_t)*(u_char *)(src) << 24) |	\
52          ((u_int32_t)*((u_char *)(src) + 1) << 16) |	\
53          ((u_int32_t)*((u_char *)(src) + 2) << 8) |	\
54          (u_int32_t)*((u_char *)(src) + 3);		\
55      memcpy((tgt), &__nh, sizeof __nh);		\
56    } while (0)
57
58#  define ua_htons(src, tgt)				\
59    do {						\
60      u_int16_t __oh;					\
61      memcpy(&__oh, (src), sizeof __oh);		\
62      *(u_char *)(tgt) = __oh >> 8;			\
63      *((u_char *)(tgt) + 1) = __oh & 0xff;		\
64    } while (0)
65
66#  define ua_ntohs(src, tgt)				\
67    do {						\
68      u_int16_t __nh;					\
69      __nh = ((u_int16_t)*(u_char *)(src) << 8) |	\
70          (u_int16_t)*((u_char *)(src) + 1);		\
71      memcpy((tgt), &__nh, sizeof __nh);		\
72    } while (0)
73
74#endif
75