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Diffstat (limited to 'src/ua.h')
| -rw-r--r-- | src/ua.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/ua.h b/src/ua.h new file mode 100644 index 0000000..e4e8346 --- /dev/null +++ b/src/ua.h @@ -0,0 +1,74 @@ +/*- + * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/usr.sbin/ppp/ua.h,v 1.3.62.1 2010/12/21 17:10:29 kensmith Exp $ + */ + +#ifdef __i386__ /* Do any other archs not care about alignment ? */ + +# define ua_htonl(src, tgt) (*(u_int32_t *)(tgt) = htonl(*(u_int32_t *)(src))) +# define ua_ntohl(src, tgt) (*(u_int32_t *)(tgt) = ntohl(*(u_int32_t *)(src))) +# define ua_htons(src, tgt) (*(u_int16_t *)(tgt) = htons(*(u_int16_t *)(src))) +# define ua_ntohs(src, tgt) (*(u_int16_t *)(tgt) = ntohs(*(u_int16_t *)(src))) + +#else /* We care about alignment (or else drop a core !) */ + +# define ua_htonl(src, tgt) \ + do { \ + u_int32_t __oh; \ + memcpy(&__oh, (src), sizeof __oh); \ + *(u_char *)(tgt) = __oh >> 24; \ + *((u_char *)(tgt) + 1) = (__oh >> 16) & 0xff; \ + *((u_char *)(tgt) + 2) = (__oh >> 8) & 0xff; \ + *((u_char *)(tgt) + 3) = __oh & 0xff; \ + } while (0) + +# define ua_ntohl(src, tgt) \ + do { \ + u_int32_t __nh; \ + __nh = ((u_int32_t)*(u_char *)(src) << 24) | \ + ((u_int32_t)*((u_char *)(src) + 1) << 16) | \ + ((u_int32_t)*((u_char *)(src) + 2) << 8) | \ + (u_int32_t)*((u_char *)(src) + 3); \ + memcpy((tgt), &__nh, sizeof __nh); \ + } while (0) + +# define ua_htons(src, tgt) \ + do { \ + u_int16_t __oh; \ + memcpy(&__oh, (src), sizeof __oh); \ + *(u_char *)(tgt) = __oh >> 8; \ + *((u_char *)(tgt) + 1) = __oh & 0xff; \ + } while (0) + +# define ua_ntohs(src, tgt) \ + do { \ + u_int16_t __nh; \ + __nh = ((u_int16_t)*(u_char *)(src) << 8) | \ + (u_int16_t)*((u_char *)(src) + 1); \ + memcpy((tgt), &__nh, sizeof __nh); \ + } while (0) + +#endif |