2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/usr.sbin/ppp/ua.h,v 1.3 1999/08/28 01:18:49 peter Exp $
27 * $DragonFly: src/usr.sbin/ppp/ua.h,v 1.2 2003/06/17 06:30:01 dillon Exp $
30 #ifdef __i386__ /* Do any other archs not care about alignment ? */
32 # define ua_htonl(src, tgt) (*(u_int32_t *)(tgt) = htonl(*(u_int32_t *)(src)))
33 # define ua_ntohl(src, tgt) (*(u_int32_t *)(tgt) = ntohl(*(u_int32_t *)(src)))
34 # define ua_htons(src, tgt) (*(u_int16_t *)(tgt) = htons(*(u_int16_t *)(src)))
35 # define ua_ntohs(src, tgt) (*(u_int16_t *)(tgt) = ntohs(*(u_int16_t *)(src)))
37 #else /* We care about alignment (or else drop a core !) */
39 # define ua_htonl(src, tgt) \
42 memcpy(&__oh, (src), sizeof __oh); \
43 *(u_char *)(tgt) = __oh >> 24; \
44 *((u_char *)(tgt) + 1) = (__oh >> 16) & 0xff; \
45 *((u_char *)(tgt) + 2) = (__oh >> 8) & 0xff; \
46 *((u_char *)(tgt) + 3) = __oh & 0xff; \
49 # define ua_ntohl(src, tgt) \
52 __nh = ((u_int32_t)*(u_char *)(src) << 24) | \
53 ((u_int32_t)*((u_char *)(src) + 1) << 16) | \
54 ((u_int32_t)*((u_char *)(src) + 2) << 8) | \
55 (u_int32_t)*((u_char *)(src) + 3); \
56 memcpy((tgt), &__nh, sizeof __nh); \
59 # define ua_htons(src, tgt) \
62 memcpy(&__oh, (src), sizeof __oh); \
63 *(u_char *)(tgt) = __oh >> 8; \
64 *((u_char *)(tgt) + 1) = __oh & 0xff; \
67 # define ua_ntohs(src, tgt) \
70 __nh = ((u_int16_t)*(u_char *)(src) << 8) | \
71 (u_int16_t)*((u_char *)(src) + 1); \
72 memcpy((tgt), &__nh, sizeof __nh); \