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 /*
  21  * This file is part of LibreOffice published API.
  22  */
  23
  24 #ifndef INCLUDED_OSL_ENDIAN_H
  25 #define INCLUDED_OSL_ENDIAN_H
  26
  27 #include "sal/types.h"
  28
  29 #ifdef __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 /** Define the platform byte order as OSL_BIGENDIAN or OSL_LITENDIAN.
  34  */
  35
  36 #if defined _WIN32
  37 #   if defined _M_ALPHA || defined _M_AMD64 || defined _M_IX86 \
  38             || defined _M_MRX000 || defined _M_PPC || defined _M_ARM64
  39 #       define OSL_LITENDIAN
  40 #   endif
  41 #elif defined ANDROID || defined LINUX || defined HAIKU
  42 #   include <endian.h>
  43 #   if __BYTE_ORDER == __LITTLE_ENDIAN
  44 #       define OSL_LITENDIAN
  45 #   elif __BYTE_ORDER == __BIG_ENDIAN
  46 #       define OSL_BIGENDIAN
  47 #   endif
  48 #elif defined IOS || defined MACOSX || defined NETBSD
  49 #   include <machine/endian.h>
  50 #   if BYTE_ORDER == LITTLE_ENDIAN
  51 #       define OSL_LITENDIAN
  52 #   elif BYTE_ORDER == BIG_ENDIAN
  53 #       define OSL_BIGENDIAN
  54 #   endif
  55 #elif defined FREEBSD
  56 #   include <sys/param.h>
  57 #   include <machine/endian.h>
  58 #   if defined _LITTLE_ENDIAN
  59 #       define OSL_LITENDIAN
  60 #   elif defined _BIG_ENDIAN
  61 #       define OSL_BIGENDIAN
  62 #   endif
  63 #elif defined __sun
  64 #   include <sys/isa_defs.h>
  65 #   if defined _LITTLE_ENDIAN
  66 #       define OSL_LITENDIAN
  67 #   elif defined _BIG_ENDIAN
  68 #       define OSL_BIGENDIAN
  69 #   endif
  70 #elif defined EMSCRIPTEN
  71 #   define OSL_LITENDIAN
  72 #else
  73 #   error "Target platform not specified !"
  74 #endif
  75 #if defined OSL_LITENDIAN == defined OSL_BIGENDIAN
  76 #   error undetermined endianness
  77 #endif
  78
  79
  80 /** Define macros for byte order manipulation.
  81  */
  82 #ifndef OSL_MAKEBYTE
  83 #   define OSL_MAKEBYTE(nl, nh)    ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4)))
  84 #endif
  85 #ifndef OSL_LONIBBLE
  86 #   define OSL_LONIBBLE(b)         ((sal_uInt8)((b) & 0x0F))
  87 #endif
  88 #ifndef OSL_HINIBBLE
  89 #   define OSL_HINIBBLE(b)         ((sal_uInt8)(((b) >> 4) & 0x0F))
  90 #endif
  91
  92 #ifndef OSL_MAKEWORD
  93 #   define OSL_MAKEWORD(bl, bh)    ((sal_uInt16)((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8)))
  94 #endif
  95 #ifndef OSL_LOBYTE
  96 #   define OSL_LOBYTE(w)           ((sal_uInt8)((sal_uInt16)(w) & 0xFF))
  97 #endif
  98 #ifndef OSL_HIBYTE
  99 #   define OSL_HIBYTE(w)           ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF))
 100 #endif
 101
 102 #ifndef OSL_MAKEDWORD
 103 #   define OSL_MAKEDWORD(wl, wh)   ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16))
 104 #endif
 105 #ifndef OSL_LOWORD
 106 #   define OSL_LOWORD(d)           ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF))
 107 #endif
 108 #ifndef OSL_HIWORD
 109 #   define OSL_HIWORD(d)           ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF))
 110 #endif
 111
 112
 113 /** Define macros for swapping between host and network byte order.
 114  */
 115 #ifdef OSL_BIGENDIAN
 116 #ifndef OSL_NETWORD
 117 #   define OSL_NETWORD(w)          (sal_uInt16)(w)
 118 #endif
 119 #ifndef OSL_NETDWORD
 120 #   define OSL_NETDWORD(d)         (sal_uInt32)(d)
 121 #endif
 122 #else  /* OSL_LITENDIAN */
 123 #ifndef OSL_NETWORD
 124 #   define OSL_NETWORD(w)          OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 125 #endif
 126 #ifndef OSL_NETDWORD
 127 #   define OSL_NETDWORD(d)         OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d)))
 128 #endif
 129 #endif /* OSL_BIGENDIAN */
 130
 131
 132 /** Define macros for swapping between byte orders.
 133  */
 134 #ifndef OSL_SWAPWORD
 135 #   define OSL_SWAPWORD(w)         OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
 136 #endif
 137 #ifndef OSL_SWAPDWORD
 138 #   define OSL_SWAPDWORD(d)        OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d)))
 139 #endif
 140
 141
 142 #ifdef __cplusplus
 143 }
 144 #endif
 145
 146 #endif // INCLUDED_OSL_ENDIAN_H
 147
 148 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */