include/osl/endian.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef _OSL_ENDIAN_H_
  21 #define _OSL_ENDIAN_H_
  22
  23 #include <sal/types.h>
  24
  25 #ifdef __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 /** Determine the platform byte order as _BIG_ENDIAN, _LITTLE_ENDIAN, ...
  30  */
  31 #ifdef _WIN32
  32 #   if defined(_M_IX86)
  33 #       define _LITTLE_ENDIAN
  34 #   elif defined(_M_AMD64)
  35 #       define _LITTLE_ENDIAN
  36 #   elif defined(_M_MRX000)
  37 #       define _LITTLE_ENDIAN
  38 #   elif defined(_M_ALPHA)
  39 #       define _LITTLE_ENDIAN
  40 #   elif defined(_M_PPC)
  41 #       define _LITTLE_ENDIAN
  42 #   endif
  43 #endif
  44
  45 #ifdef LINUX
  46 #   include <endian.h>
  47 #   if __BYTE_ORDER == __LITTLE_ENDIAN
  48 #           ifndef _LITTLE_ENDIAN
  49 #       define _LITTLE_ENDIAN
  50 #           endif
  51 #   elif __BYTE_ORDER == __BIG_ENDIAN
  52 #           ifndef _BIG_ENDIAN
  53 #       define _BIG_ENDIAN
  54 #           endif
  55 #   endif
  56 #endif
  57
  58 #ifdef ANDROID
  59 #   include <endian.h>
  60 #   if __BYTE_ORDER == __LITTLE_ENDIAN
  61 #           ifndef _LITTLE_ENDIAN
  62 #       define _LITTLE_ENDIAN
  63 #           endif
  64 #   elif __BYTE_ORDER == __BIG_ENDIAN
  65 #           ifndef _BIG_ENDIAN
  66 #       define _BIG_ENDIAN
  67 #           endif
  68 #   endif
  69 #endif
  70
  71 #ifdef NETBSD
  72 #   include <machine/endian.h>
  73 #   if BYTE_ORDER == LITTLE_ENDIAN
  74 #   undef _BIG_ENDIAN
  75 #   elif BYTE_ORDER == BIG_ENDIAN
  76 #   undef _LITTLE_ENDIAN
  77 #   endif
  78 #endif
  79
  80 #ifdef FREEBSD
  81 #   include <sys/param.h>
  82 #   include <machine/endian.h>
  83 #if __FreeBSD_version < 500000
  84 #   if BYTE_ORDER == LITTLE_ENDIAN
  85 #       define _LITTLE_ENDIAN
  86 #   elif BYTE_ORDER == BIG_ENDIAN
  87 #       define _BIG_ENDIAN
  88 #   endif
  89 #endif
  90 #endif
  91
  92 #ifdef AIX
  93 #   include <sys/machine.h>
  94 #   if BYTE_ORDER == LITTLE_ENDIAN
  95 #       ifndef _LITTLE_ENDIAN
  96 #           define _LITTLE_ENDIAN
  97 #       endif
  98 #   elif BYTE_ORDER == BIG_ENDIAN
  99 #       ifndef _BIG_ENDIAN
 100 #           define _BIG_ENDIAN
 101 #       endif
 102 #   endif
 103 #endif
 104
 105 #ifdef SOLARIS
 106 #   include <sys/isa_defs.h>
 107 #endif
 108
 109 #ifdef MACOSX
 110 #   include <machine/endian.h>
 111 #   if BYTE_ORDER == LITTLE_ENDIAN
 112 #       ifndef _LITTLE_ENDIAN
 113 #       define _LITTLE_ENDIAN
 114 #       endif
 115 #   elif BYTE_ORDER == BIG_ENDIAN
 116 #       ifndef _BIG_ENDIAN
 117 #       define _BIG_ENDIAN
 118 #       endif
 119 #   endif
 120 #endif
 121
 122 #ifdef IOS
 123 #   include <machine/endian.h>
 124 #   if BYTE_ORDER == LITTLE_ENDIAN
 125 #       ifndef _LITTLE_ENDIAN
 126 #       define _LITTLE_ENDIAN
 127 #       endif
 128 #   elif BYTE_ORDER == BIG_ENDIAN
 129 #       ifndef _BIG_ENDIAN
 130 #       define _BIG_ENDIAN
 131 #       endif
 132 #   endif
 133 #endif
 134
 135 /** Check supported platform.
 136  */
 137 #if !defined(_WIN32)  && \
 138     !defined(LINUX)   && !defined(NETBSD) && \
 139     !defined(AIX)     && !defined(OPENBSD) && \
 140     !defined(SOLARIS) && !defined(MACOSX) && !defined(FREEBSD) && \
 141     !defined(DRAGONFLY) && \
 142     !defined(IOS)     && !defined(ANDROID)
 143 #   error "Target platform not specified !"
 144 #endif
 145
 146
 147 /** Define the determined byte order as OSL_BIGENDIAN or OSL_LITENDIAN.
 148  */
 149 #if defined _LITTLE_ENDIAN
 150 #   define OSL_LITENDIAN
 151 #elif defined _BIG_ENDIAN
 152 #   define OSL_BIGENDIAN
 153 #else
 154 #   error undetermined endianess
 155 #endif
 156
 157
 158 /** Define macros for byte order manipulation.
 159  */
 160 #ifndef OSL_MAKEBYTE
 161 #   define OSL_MAKEBYTE(nl, nh)    ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4)))
 162 #endif
 163 #ifndef OSL_LONIBBLE
 164 #   define OSL_LONIBBLE(b)         ((sal_uInt8)((b) & 0x0F))
 165 #endif
 166 #ifndef OSL_HINIBBLE
 167 #   define OSL_HINIBBLE(b)         ((sal_uInt8)(((b) >> 4) & 0x0F))
 168 #endif
 169
 170 #ifndef OSL_MAKEWORD
 171 #   define OSL_MAKEWORD(bl, bh)    ((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8))
 172 #endif
 173 #ifndef OSL_LOBYTE
 174 #   define OSL_LOBYTE(w)           ((sal_uInt8)((sal_uInt16)(w) & 0xFF))
 175 #endif
 176 #ifndef OSL_HIBYTE
 177 #   define OSL_HIBYTE(w)           ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF))
 178 #endif
 179
 180 #ifndef OSL_MAKEDWORD
 181 #   define OSL_MAKEDWORD(wl, wh)   ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16))
 182 #endif
 183 #ifndef OSL_LOWORD
 184 #   define OSL_LOWORD(d)           ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF))
 185 #endif
 186 #ifndef OSL_HIWORD
 187 #   define OSL_HIWORD(d)           ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF))
 188 #endif
 189
 190
 191 /** Define macros for swapping between host and network byte order.
 192  */
 193 #ifdef OSL_BIGENDIAN
 194 #ifndef OSL_NETWORD
 195 #   define OSL_NETWORD(w)          (sal_uInt16)(w)
 196 #endif
 197 #ifndef OSL_NETDWORD
 198 #   define OSL_NETDWORD(d)         (sal_uInt32)(d)
 199 #endif
 200 #else  /* OSL_LITENDIAN */
 201 #ifndef OSL_NETWORD
 202 #   define OSL_NETWORD(w)          OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 203 #endif
 204 #ifndef OSL_NETDWORD
 205 #   define OSL_NETDWORD(d)         OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d)))
 206 #endif
 207 #endif /* OSL_BIGENDIAN */
 208
 209
 210 /** Define macros for swapping between byte orders.
 211  */
 212 #ifndef OSL_SWAPWORD
 213 #   define OSL_SWAPWORD(w)         OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 214 #endif
 215 #ifndef OSL_SWAPDWORD
 216 #   define OSL_SWAPDWORD(d)        OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d)))
 217 #endif
 218
 219
 220 #ifdef __cplusplus
 221 }
 222 #endif
 223
 224 #endif /*_OSL_ENDIAN_H_ */
 225
 226 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */