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.
   4  *
   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 INCLUDED_OSL_ENDIAN_H
  21 #define INCLUDED_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 #endif
  84
  85 #ifdef AIX
  86 #   include <sys/machine.h>
  87 #   if BYTE_ORDER == LITTLE_ENDIAN
  88 #       ifndef _LITTLE_ENDIAN
  89 #           define _LITTLE_ENDIAN
  90 #       endif
  91 #   elif BYTE_ORDER == BIG_ENDIAN
  92 #       ifndef _BIG_ENDIAN
  93 #           define _BIG_ENDIAN
  94 #       endif
  95 #   endif
  96 #endif
  97
  98 #ifdef SOLARIS
  99 #   include <sys/isa_defs.h>
 100 #endif
 101
 102 #ifdef MACOSX
 103 #   include <machine/endian.h>
 104 #   if BYTE_ORDER == LITTLE_ENDIAN
 105 #       ifndef _LITTLE_ENDIAN
 106 #       define _LITTLE_ENDIAN
 107 #       endif
 108 #   elif BYTE_ORDER == BIG_ENDIAN
 109 #       ifndef _BIG_ENDIAN
 110 #       define _BIG_ENDIAN
 111 #       endif
 112 #   endif
 113 #endif
 114
 115 #ifdef IOS
 116 #   include <machine/endian.h>
 117 #   if BYTE_ORDER == LITTLE_ENDIAN
 118 #       ifndef _LITTLE_ENDIAN
 119 #       define _LITTLE_ENDIAN
 120 #       endif
 121 #   elif BYTE_ORDER == BIG_ENDIAN
 122 #       ifndef _BIG_ENDIAN
 123 #       define _BIG_ENDIAN
 124 #       endif
 125 #   endif
 126 #endif
 127
 128 /** Check supported platform.
 129  */
 130 #if !defined(_WIN32)  && \
 131     !defined(LINUX)   && !defined(NETBSD) && \
 132     !defined(AIX)     && !defined(OPENBSD) && \
 133     !defined(SOLARIS) && !defined(MACOSX) && !defined(FREEBSD) && \
 134     !defined(DRAGONFLY) && \
 135     !defined(IOS)     && !defined(ANDROID)
 136 #   error "Target platform not specified !"
 137 #endif
 138
 139
 140 /** Define the determined byte order as OSL_BIGENDIAN or OSL_LITENDIAN.
 141  */
 142 #if defined _LITTLE_ENDIAN
 143 #   define OSL_LITENDIAN
 144 #elif defined _BIG_ENDIAN
 145 #   define OSL_BIGENDIAN
 146 #else
 147 #   error undetermined endianness
 148 #endif
 149
 150
 151 /** Define macros for byte order manipulation.
 152  */
 153 #ifndef OSL_MAKEBYTE
 154 #   define OSL_MAKEBYTE(nl, nh)    ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4)))
 155 #endif
 156 #ifndef OSL_LONIBBLE
 157 #   define OSL_LONIBBLE(b)         ((sal_uInt8)((b) & 0x0F))
 158 #endif
 159 #ifndef OSL_HINIBBLE
 160 #   define OSL_HINIBBLE(b)         ((sal_uInt8)(((b) >> 4) & 0x0F))
 161 #endif
 162
 163 #ifndef OSL_MAKEWORD
 164 #   define OSL_MAKEWORD(bl, bh)    ((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8))
 165 #endif
 166 #ifndef OSL_LOBYTE
 167 #   define OSL_LOBYTE(w)           ((sal_uInt8)((sal_uInt16)(w) & 0xFF))
 168 #endif
 169 #ifndef OSL_HIBYTE
 170 #   define OSL_HIBYTE(w)           ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF))
 171 #endif
 172
 173 #ifndef OSL_MAKEDWORD
 174 #   define OSL_MAKEDWORD(wl, wh)   ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16))
 175 #endif
 176 #ifndef OSL_LOWORD
 177 #   define OSL_LOWORD(d)           ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF))
 178 #endif
 179 #ifndef OSL_HIWORD
 180 #   define OSL_HIWORD(d)           ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF))
 181 #endif
 182
 183
 184 /** Define macros for swapping between host and network byte order.
 185  */
 186 #ifdef OSL_BIGENDIAN
 187 #ifndef OSL_NETWORD
 188 #   define OSL_NETWORD(w)          (sal_uInt16)(w)
 189 #endif
 190 #ifndef OSL_NETDWORD
 191 #   define OSL_NETDWORD(d)         (sal_uInt32)(d)
 192 #endif
 193 #else  /* OSL_LITENDIAN */
 194 #ifndef OSL_NETWORD
 195 #   define OSL_NETWORD(w)          OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 196 #endif
 197 #ifndef OSL_NETDWORD
 198 #   define OSL_NETDWORD(d)         OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d)))
 199 #endif
 200 #endif /* OSL_BIGENDIAN */
 201
 202
 203 /** Define macros for swapping between byte orders.
 204  */
 205 #ifndef OSL_SWAPWORD
 206 #   define OSL_SWAPWORD(w)         OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 207 #endif
 208 #ifndef OSL_SWAPDWORD
 209 #   define OSL_SWAPDWORD(d)        OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d)))
 210 #endif
 211
 212
 213 #ifdef __cplusplus
 214 }
 215 #endif
 216
 217 #endif // INCLUDED_OSL_ENDIAN_H
 218
 219 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */