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 /** Define the platform byte order as OSL_BIGENDIAN or OSL_LITENDIAN.
  30  */
  31
  32 #if defined _WIN32
  33 #   if defined _M_ALPHA || defined _M_AMD64 || defined _M_IX86 \
  34             || defined _M_MRX000 || defined _M_PPC
  35 #       define OSL_LITENDIAN
  36 #   endif
  37 #elif defined ANDROID || defined LINUX || defined HAIKU
  38 #   include <endian.h>
  39 #   if __BYTE_ORDER == __LITTLE_ENDIAN
  40 #       define OSL_LITENDIAN
  41 #   elif __BYTE_ORDER == __BIG_ENDIAN
  42 #       define OSL_BIGENDIAN
  43 #   endif
  44 #elif defined IOS || defined MACOSX || defined NETBSD
  45 #   include <machine/endian.h>
  46 #   if BYTE_ORDER == LITTLE_ENDIAN
  47 #       define OSL_LITENDIAN
  48 #   elif BYTE_ORDER == BIG_ENDIAN
  49 #       define OSL_BIGENDIAN
  50 #   endif
  51 #elif defined FREEBSD
  52 #   include <sys/param.h>
  53 #   include <machine/endian.h>
  54 #   if defined _LITTLE_ENDIAN
  55 #       define OSL_LITENDIAN
  56 #   elif defined _BIG_ENDIAN
  57 #       define OSL_BIGENDIAN
  58 #   endif
  59 #elif defined AIX
  60 #   include <sys/machine.h>
  61 #   if BYTE_ORDER == LITTLE_ENDIAN
  62 #       define OSL_LITENDIAN
  63 #   elif BYTE_ORDER == BIG_ENDIAN
  64 #       define OSL_BIGENDIAN
  65 #   endif
  66 #elif defined __sun
  67 #   include <sys/isa_defs.h>
  68 #   if defined _LITTLE_ENDIAN
  69 #       define OSL_LITENDIAN
  70 #   elif defined _BIG_ENDIAN
  71 #       define OSL_BIGENDIAN
  72 #   endif
  73 #else
  74 #   error "Target platform not specified !"
  75 #endif
  76 #if defined OSL_LITENDIAN == defined OSL_BIGENDIAN
  77 #   error undetermined endianness
  78 #endif
  79
  80
  81 /** Define macros for byte order manipulation.
  82  */
  83 #ifndef OSL_MAKEBYTE
  84 #   define OSL_MAKEBYTE(nl, nh)    ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4)))
  85 #endif
  86 #ifndef OSL_LONIBBLE
  87 #   define OSL_LONIBBLE(b)         ((sal_uInt8)((b) & 0x0F))
  88 #endif
  89 #ifndef OSL_HINIBBLE
  90 #   define OSL_HINIBBLE(b)         ((sal_uInt8)(((b) >> 4) & 0x0F))
  91 #endif
  92
  93 #ifndef OSL_MAKEWORD
  94 #   define OSL_MAKEWORD(bl, bh)    ((sal_uInt16)((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8)))
  95 #endif
  96 #ifndef OSL_LOBYTE
  97 #   define OSL_LOBYTE(w)           ((sal_uInt8)((sal_uInt16)(w) & 0xFF))
  98 #endif
  99 #ifndef OSL_HIBYTE
 100 #   define OSL_HIBYTE(w)           ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF))
 101 #endif
 102
 103 #ifndef OSL_MAKEDWORD
 104 #   define OSL_MAKEDWORD(wl, wh)   ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16))
 105 #endif
 106 #ifndef OSL_LOWORD
 107 #   define OSL_LOWORD(d)           ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF))
 108 #endif
 109 #ifndef OSL_HIWORD
 110 #   define OSL_HIWORD(d)           ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF))
 111 #endif
 112
 113
 114 /** Define macros for swapping between host and network byte order.
 115  */
 116 #ifdef OSL_BIGENDIAN
 117 #ifndef OSL_NETWORD
 118 #   define OSL_NETWORD(w)          (sal_uInt16)(w)
 119 #endif
 120 #ifndef OSL_NETDWORD
 121 #   define OSL_NETDWORD(d)         (sal_uInt32)(d)
 122 #endif
 123 #else  /* OSL_LITENDIAN */
 124 #ifndef OSL_NETWORD
 125 #   define OSL_NETWORD(w)          OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 126 #endif
 127 #ifndef OSL_NETDWORD
 128 #   define OSL_NETDWORD(d)         OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d)))
 129 #endif
 130 #endif /* OSL_BIGENDIAN */
 131
 132
 133 /** Define macros for swapping between byte orders.
 134  */
 135 #ifndef OSL_SWAPWORD
 136 #   define OSL_SWAPWORD(w)         OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 137 #endif
 138 #ifndef OSL_SWAPDWORD
 139 #   define OSL_SWAPDWORD(d)        OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d)))
 140 #endif
 141
 142
 143 #ifdef __cplusplus
 144 }
 145 #endif
 146
 147 #endif // INCLUDED_OSL_ENDIAN_H
 148
 149 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */