1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #ifndef _OSL_ENDIAN_H_ 25 #define _OSL_ENDIAN_H_ 26 27 #include <sal/types.h> 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /** Determine the platform byte order as _BIG_ENDIAN, _LITTLE_ENDIAN, ... 34 */ 35 #ifdef _WIN32 36 # if defined(_M_IX86) 37 # define _LITTLE_ENDIAN 38 # elif defined(_M_MRX000) 39 # define _LITTLE_ENDIAN 40 # elif defined(_M_ALPHA) 41 # define _LITTLE_ENDIAN 42 # elif defined(_M_PPC) 43 # define _LITTLE_ENDIAN 44 # endif 45 #endif 46 47 #ifdef LINUX 48 # include <endian.h> 49 # if __BYTE_ORDER == __LITTLE_ENDIAN 50 # ifndef _LITTLE_ENDIAN 51 # define _LITTLE_ENDIAN 52 # endif 53 # elif __BYTE_ORDER == __BIG_ENDIAN 54 # ifndef _BIG_ENDIAN 55 # define _BIG_ENDIAN 56 # endif 57 # elif __BYTE_ORDER == __PDP_ENDIAN 58 # define _PDP_ENDIAN 59 # endif 60 #endif 61 62 #ifdef NETBSD 63 # include <machine/endian.h> 64 # if BYTE_ORDER == LITTLE_ENDIAN 65 # define _LITTLE_ENDIAN 66 # elif BYTE_ORDER == BIG_ENDIAN 67 # define _BIG_ENDIAN 68 # elif BYTE_ORDER == PDP_ENDIAN 69 # define _PDP_ENDIAN 70 # endif 71 #endif 72 73 #ifdef FREEBSD 74 # include <sys/param.h> 75 # include <machine/endian.h> 76 #if __FreeBSD_version < 500000 77 # if BYTE_ORDER == LITTLE_ENDIAN 78 # define _LITTLE_ENDIAN 79 # elif BYTE_ORDER == BIG_ENDIAN 80 # define _BIG_ENDIAN 81 # elif BYTE_ORDER == PDP_ENDIAN 82 # define _PDP_ENDIAN 83 # endif 84 #endif 85 #endif 86 87 #ifdef SCO 88 # include <sys/types.h> 89 # include <sys/byteorder.h> 90 # if BYTE_ORDER == LITTLE_ENDIAN 91 # define _LITTLE_ENDIAN 92 # elif BYTE_ORDER == BIG_ENDIAN 93 # define _BIG_ENDIAN 94 # elif BYTE_ORDER == PDP_ENDIAN 95 # define _PDP_ENDIAN 96 # endif 97 #endif 98 99 #ifdef AIX 100 # include <sys/machine.h> 101 # if BYTE_ORDER == LITTLE_ENDIAN 102 # define _LITTLE_ENDIAN 103 # elif BYTE_ORDER == BIG_ENDIAN 104 # define _BIG_ENDIAN 105 # elif BYTE_ORDER == PDP_ENDIAN 106 # define _PDP_ENDIAN 107 # endif 108 #endif 109 110 #ifdef HPUX 111 # include <machine/param.h> 112 #endif 113 114 #ifdef _WIN16 115 # define _LITTLE_ENDIAN 116 #endif 117 118 #ifdef OS2 119 # include <machine/endian.h> 120 #endif 121 122 #ifdef SOLARIS 123 # include <sys/isa_defs.h> 124 #endif 125 126 #ifdef MACOSX 127 # include <machine/endian.h> 128 # if BYTE_ORDER == LITTLE_ENDIAN 129 # ifndef _LITTLE_ENDIAN 130 # define _LITTLE_ENDIAN 131 # endif 132 # elif BYTE_ORDER == BIG_ENDIAN 133 # ifndef _BIG_ENDIAN 134 # define _BIG_ENDIAN 135 # endif 136 # elif BYTE_ORDER == PDP_ENDIAN 137 # ifndef _PDP_ENDIAN 138 # define _PDP_ENDIAN 139 # endif 140 # endif 141 #endif 142 143 /** Check supported platform. 144 */ 145 #if !defined(_WIN32) && !defined(_WIN16) && !defined(OS2) && \ 146 !defined(LINUX) && !defined(NETBSD) && !defined(SCO) && \ 147 !defined(AIX) && !defined(HPUX) && \ 148 !defined(SOLARIS) && !defined(MACOSX) && !defined(FREEBSD) 149 # error "Target platform not specified !" 150 #endif 151 152 153 /** Define the determined byte order as OSL_BIGENDIAN or OSL_LITENDIAN. 154 */ 155 #if defined _LITTLE_ENDIAN 156 # define OSL_LITENDIAN 157 #elif defined _BIG_ENDIAN 158 # define OSL_BIGENDIAN 159 #else 160 # error undetermined endianess 161 #endif 162 163 164 /** Define macros for byte order manipulation. 165 */ 166 #ifndef OSL_MAKEBYTE 167 # define OSL_MAKEBYTE(nl, nh) ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4))) 168 #endif 169 #ifndef OSL_LONIBBLE 170 # define OSL_LONIBBLE(b) ((sal_uInt8)((b) & 0x0F)) 171 #endif 172 #ifndef OSL_HINIBBLE 173 # define OSL_HINIBBLE(b) ((sal_uInt8)(((b) >> 4) & 0x0F)) 174 #endif 175 176 #ifndef OSL_MAKEWORD 177 # define OSL_MAKEWORD(bl, bh) ((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8)) 178 #endif 179 #ifndef OSL_LOBYTE 180 # define OSL_LOBYTE(w) ((sal_uInt8)((sal_uInt16)(w) & 0xFF)) 181 #endif 182 #ifndef OSL_HIBYTE 183 # define OSL_HIBYTE(w) ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF)) 184 #endif 185 186 #ifndef OSL_MAKEDWORD 187 # define OSL_MAKEDWORD(wl, wh) ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16)) 188 #endif 189 #ifndef OSL_LOWORD 190 # define OSL_LOWORD(d) ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF)) 191 #endif 192 #ifndef OSL_HIWORD 193 # define OSL_HIWORD(d) ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF)) 194 #endif 195 196 197 /** Define macros for swapping between host and network byte order. 198 */ 199 #ifdef OSL_BIGENDIAN 200 #ifndef OSL_NETWORD 201 # define OSL_NETWORD(w) (sal_uInt16)(w) 202 #endif 203 #ifndef OSL_NETDWORD 204 # define OSL_NETDWORD(d) (sal_uInt32)(d) 205 #endif 206 #else /* OSL_LITENDIAN */ 207 #ifndef OSL_NETWORD 208 # define OSL_NETWORD(w) OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w)) 209 #endif 210 #ifndef OSL_NETDWORD 211 # define OSL_NETDWORD(d) OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d))) 212 #endif 213 #endif /* OSL_BIGENDIAN */ 214 215 216 /** Define macros for swapping between byte orders. 217 */ 218 #ifndef OSL_SWAPWORD 219 # define OSL_SWAPWORD(w) OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w)) 220 #endif 221 #ifndef OSL_SWAPDWORD 222 # define OSL_SWAPDWORD(d) OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d))) 223 #endif 224 225 226 #ifdef __cplusplus 227 } 228 #endif 229 230 #endif /*_OSL_ENDIAN_H_ */ 231 232