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