endian.h revision 1.25
1 /* $NetBSD: endian.h,v 1.25 1999/01/15 13:31:24 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1987, 1991 Regents of the University of California. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)endian.h 7.8 (Berkeley) 4/3/91 72 */ 73 74 #ifndef _I386_ENDIAN_H_ 75 #define _I386_ENDIAN_H_ 76 77 /* 78 * Define the order of 32-bit words in 64-bit words. 79 */ 80 #define _QUAD_HIGHWORD 1 81 #define _QUAD_LOWWORD 0 82 83 84 #ifndef _POSIX_SOURCE 85 /* 86 * Definitions for byte order, according to byte significance from low 87 * address to high. 88 */ 89 #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ 90 #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ 91 #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ 92 93 #define BYTE_ORDER LITTLE_ENDIAN 94 95 #include <sys/cdefs.h> 96 97 typedef u_int32_t in_addr_t; 98 typedef u_int16_t in_port_t; 99 100 __BEGIN_DECLS 101 in_addr_t htonl __P((in_addr_t)); 102 in_port_t htons __P((in_port_t)); 103 in_addr_t ntohl __P((in_addr_t)); 104 in_port_t ntohs __P((in_port_t)); 105 __END_DECLS 106 107 108 #ifdef __GNUC__ 109 110 #include <machine/byte_swap.h> 111 112 #define ntohl(x) ((in_addr_t)__byte_swap_long((in_addr_t)(x))) 113 #define ntohs(x) ((in_port_t)__byte_swap_word((in_port_t)(x))) 114 #define htonl(x) ((in_addr_t)__byte_swap_long((in_addr_t)(x))) 115 #define htons(x) ((in_port_t)__byte_swap_word((in_port_t)(x))) 116 117 #endif /* __GNUC__ */ 118 119 120 /* 121 * Macros for network/external number representation conversion. 122 */ 123 #define NTOHL(x) (x) = ntohl((in_addr_t)(x)) 124 #define NTOHS(x) (x) = ntohs((in_port_t)(x)) 125 #define HTONL(x) (x) = htonl((in_addr_t)(x)) 126 #define HTONS(x) (x) = htons((in_port_t)(x)) 127 128 #endif /* _POSIX_SOURCE */ 129 130 #endif /* !_I386_ENDIAN_H_ */ 131
Indexes created Sat Sep 27 22:09:54 GMT 2025