75 lines
3.0 KiB
C
75 lines
3.0 KiB
C
/*-
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* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ua.h,v 1.1 1998/09/04 18:26:00 brian Exp $
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*/
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#ifdef __i386__ /* Do any other archs not care about alignment ? */
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# define ua_htonl(src, tgt) (*(u_int32_t *)(tgt) = htonl(*(u_int32_t *)(src)))
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# define ua_ntohl(src, tgt) (*(u_int32_t *)(tgt) = ntohl(*(u_int32_t *)(src)))
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# define ua_htons(src, tgt) (*(u_int16_t *)(tgt) = htons(*(u_int16_t *)(src)))
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# define ua_ntohs(src, tgt) (*(u_int16_t *)(tgt) = ntohs(*(u_int16_t *)(src)))
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#else /* We care about alignment (or else drop a core !) */
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# define ua_htonl(src, tgt) \
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do { \
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u_int32_t __oh; \
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memcpy(&__oh, (src), sizeof __oh); \
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*(u_char *)(tgt) = __oh >> 24; \
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*((u_char *)(tgt) + 1) = (__oh >> 16) & 0xff; \
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*((u_char *)(tgt) + 2) = (__oh >> 8) & 0xff; \
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*((u_char *)(tgt) + 3) = __oh & 0xff; \
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} while (0)
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# define ua_ntohl(src, tgt) \
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do { \
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u_int32_t __nh; \
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__nh = ((u_int32_t)*(u_char *)(src) << 24) | \
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((u_int32_t)*((u_char *)(src) + 1) << 16) | \
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((u_int32_t)*((u_char *)(src) + 2) << 8) | \
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(u_int32_t)*((u_char *)(src) + 3); \
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memcpy((tgt), &__nh, sizeof __nh); \
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} while (0)
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# define ua_htons(src, tgt) \
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do { \
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u_int16_t __oh; \
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memcpy(&__oh, (src), sizeof __oh); \
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*(u_char *)(tgt) = __oh >> 8; \
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*((u_char *)(tgt) + 1) = __oh & 0xff; \
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} while (0)
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# define ua_ntohs(src, tgt) \
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do { \
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u_int16_t __nh; \
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__nh = ((u_int16_t)*(u_char *)(src) << 8) | \
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(u_int16_t)*((u_char *)(src) + 1); \
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memcpy((tgt), &__nh, sizeof __nh); \
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} while (0)
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#endif
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