1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #ifndef _SYS_BYTEORDER_H 41 #define _SYS_BYTEORDER_H 42 43 #include <sys/isa_defs.h> 44 #include <sys/int_types.h> 45 46 #if defined(__GNUC__) && defined(_ASM_INLINES) && \ 47 (defined(__i386) || defined(__amd64)) 48 #include <asm/byteorder.h> 49 #endif 50 51 #ifdef __cplusplus 52 extern "C" { 53 #endif 54 55 /* 56 * macros for conversion between host and (internet) network byte order 57 */ 58 59 #if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint) 60 /* big-endian */ 61 #define ntohl(x) (x) 62 #define ntohll(x) (x) 63 #define ntohs(x) (x) 64 #define htonl(x) (x) 65 #define htonll(x) (x) 66 #define htons(x) (x) 67 68 #elif !defined(ntohl) /* little-endian */ 69 70 #ifndef _IN_PORT_T 71 #define _IN_PORT_T 72 typedef uint16_t in_port_t; 73 #endif 74 75 #ifndef _IN_ADDR_T 76 #define _IN_ADDR_T 77 typedef uint32_t in_addr_t; 78 #endif 79 80 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) 81 extern uint32_t htonl(uint32_t); 82 extern uint16_t htons(uint16_t); 83 extern uint32_t ntohl(uint32_t); 84 extern uint16_t ntohs(uint16_t); 85 #else 86 extern in_addr_t htonl(in_addr_t); 87 extern in_port_t htons(in_port_t); 88 extern in_addr_t ntohl(in_addr_t); 89 extern in_port_t ntohs(in_port_t); 90 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) */ 91 #if !(defined(_XPG4_2) || defined(_XPG5)) || defined(__EXTENSIONS__) 92 extern uint64_t htonll(uint64_t); 93 extern uint64_t ntohll(uint64_t); 94 #endif /* !(_XPG4_2||_XPG5) || __EXTENSIONS__ */ 95 #endif 96 97 #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 98 99 /* 100 * Macros to reverse byte order 101 */ 102 #define BSWAP_8(x) ((x) & 0xff) 103 #if !defined(__i386) && !defined(__amd64) 104 #define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8)) 105 #define BSWAP_32(x) (((uint32_t)(x) << 24) | \ 106 (((uint32_t)(x) << 8) & 0xff0000) | \ 107 (((uint32_t)(x) >> 8) & 0xff00) | \ 108 ((uint32_t)(x) >> 24)) 109 #else /* x86 */ 110 #define BSWAP_16(x) htons(x) 111 #define BSWAP_32(x) htonl(x) 112 #endif /* !__i386 && !__amd64 */ 113 114 #if (!defined(__i386) && !defined(__amd64)) || \ 115 ((defined(_XPG4_2) || defined(_XPG5)) && !defined(__EXTENSIONS__)) 116 #define BSWAP_64(x) (((uint64_t)(x) << 56) | \ 117 (((uint64_t)(x) << 40) & 0xff000000000000ULL) | \ 118 (((uint64_t)(x) << 24) & 0xff0000000000ULL) | \ 119 (((uint64_t)(x) << 8) & 0xff00000000ULL) | \ 120 (((uint64_t)(x) >> 8) & 0xff000000ULL) | \ 121 (((uint64_t)(x) >> 24) & 0xff0000ULL) | \ 122 (((uint64_t)(x) >> 40) & 0xff00ULL) | \ 123 ((uint64_t)(x) >> 56)) 124 #else /* x86 with non-XPG extensions allowed */ 125 #define BSWAP_64(x) htonll(x) 126 #endif /* (!__i386&&!__amd64) || ((_XPG4_2||_XPG5) && !__EXTENSIONS__) */ 127 128 #define BMASK_8(x) ((x) & 0xff) 129 #define BMASK_16(x) ((x) & 0xffff) 130 #define BMASK_32(x) ((x) & 0xffffffff) 131 #define BMASK_64(x) (x) 132 133 /* 134 * Macros to convert from a specific byte order to/from native byte order 135 */ 136 #ifdef _BIG_ENDIAN 137 #define BE_8(x) BMASK_8(x) 138 #define BE_16(x) BMASK_16(x) 139 #define BE_32(x) BMASK_32(x) 140 #define BE_64(x) BMASK_64(x) 141 #define LE_8(x) BSWAP_8(x) 142 #define LE_16(x) BSWAP_16(x) 143 #define LE_32(x) BSWAP_32(x) 144 #define LE_64(x) BSWAP_64(x) 145 #else 146 #define LE_8(x) BMASK_8(x) 147 #define LE_16(x) BMASK_16(x) 148 #define LE_32(x) BMASK_32(x) 149 #define LE_64(x) BMASK_64(x) 150 #define BE_8(x) BSWAP_8(x) 151 #define BE_16(x) BSWAP_16(x) 152 #define BE_32(x) BSWAP_32(x) 153 #define BE_64(x) BSWAP_64(x) 154 #endif 155 156 /* 157 * Macros to read unaligned values from a specific byte order to 158 * native byte order 159 */ 160 161 #define BE_IN8(xa) \ 162 *((uint8_t *)(xa)) 163 164 #if !defined(__i386) && !defined(__amd64) 165 #define BE_IN16(xa) \ 166 (((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa) + 1)) 167 168 #define BE_IN32(xa) \ 169 (((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa) + 2)) 170 171 #else /* x86 */ 172 #define BE_IN16(xa) htons(*((uint16_t *)(void *)(xa))) 173 #define BE_IN32(xa) htonl(*((uint32_t *)(void *)(xa))) 174 #endif /* !__i386 && !__amd64 */ 175 176 #if (!defined(__i386) && !defined(__amd64)) || \ 177 ((defined(_XPG4_2) || defined(_XPG5)) && !defined(__EXTENSIONS__)) 178 #define BE_IN64(xa) \ 179 (((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa) + 4)) 180 #else /* x86 with non-XPG extensions allowed */ 181 #define BE_IN64(xa) htonll(*((uint64_t *)(void *)(xa))) 182 #endif /* (!__i386&&!__amd64) || ((_XPG4_2||_XPG5) && !__EXTENSIONS__) */ 183 184 #define LE_IN8(xa) \ 185 *((uint8_t *)(xa)) 186 187 #define LE_IN16(xa) \ 188 (((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa)) 189 190 #define LE_IN32(xa) \ 191 (((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa)) 192 193 #define LE_IN64(xa) \ 194 (((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa)) 195 196 /* 197 * Macros to write unaligned values from native byte order to a specific byte 198 * order. 199 */ 200 201 #define BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); 202 203 #define BE_OUT16(xa, yv) \ 204 BE_OUT8((uint8_t *)(xa) + 1, yv); \ 205 BE_OUT8((uint8_t *)(xa), (yv) >> 8); 206 207 #define BE_OUT32(xa, yv) \ 208 BE_OUT16((uint8_t *)(xa) + 2, yv); \ 209 BE_OUT16((uint8_t *)(xa), (yv) >> 16); 210 211 #if (!defined(__i386) && !defined(__amd64)) || \ 212 ((defined(_XPG4_2) || defined(_XPG5)) && !defined(__EXTENSIONS__)) 213 #define BE_OUT64(xa, yv) \ 214 BE_OUT32((uint8_t *)(xa) + 4, yv); \ 215 BE_OUT32((uint8_t *)(xa), (yv) >> 32); 216 #else /* x86 with non-XPG extensions allowed */ 217 #define BE_OUT64(xa, yv) *((uint64_t *)(void *)(xa)) = htonll((uint64_t)(yv)); 218 #endif /* (!__i386&&!__amd64) || ((_XPG4_2||_XPG5) && !__EXTENSIONS__) */ 219 220 #define LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv); 221 222 #define LE_OUT16(xa, yv) \ 223 LE_OUT8((uint8_t *)(xa), yv); \ 224 LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8); 225 226 #define LE_OUT32(xa, yv) \ 227 LE_OUT16((uint8_t *)(xa), yv); \ 228 LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16); 229 230 #define LE_OUT64(xa, yv) \ 231 LE_OUT32((uint8_t *)(xa), yv); \ 232 LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32); 233 234 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 235 236 #ifdef __cplusplus 237 } 238 #endif 239 240 #endif /* _SYS_BYTEORDER_H */ 241