include/platform.h

   1 //
   2 //  Copyright (C) 2007 by Martin Moracek
   3 //
   4 //  This program is free software; you can redistribute it and/or modify
   5 //  it under the terms of the GNU General Public License as published by
   6 //  the Free Software Foundation; either version 2 of the License, or
   7 //  (at your option) any later version.
   8 //
   9 //  This program is distributed in the hope that it will be useful,
  10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 //  GNU General Public License for more details.
  13 //
  14 //  You should have received a copy of the GNU General Public License
  15 //  along with this program; if not, write to the Free Software
  16 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17 //
  18
  19 /**
  20  *  @file platform.h
  21  *
  22  *  Header file for platform dependent macros and constants.
  23  */
  24
  25 #pragma once
  26
  27 /*
  28  *  Little/big endianism
  29  */
  30
  31 #ifdef IS_BIG_ENDIAN
  32
  33 #  include "types.h"
  34
  35 #  if (IS_BIG_ENDIAN == 1)
  36 #    define PLATFORM_BIG_ENDIAN
  37
  38 // platform conversion functions
  39 inline uint16 ToLittleEndian(uint16 v)
  40 {
  41   return (0x00FF & v) << 8 |
  42          (0xFF00 & v) >> 8;
  43 }
  44
  45 inline uint32 ToLittleEndian(uint32 v)
  46 {
  47   return (0x000000FF & v) << 24 |
  48          (0x0000FF00 & v) << 8  |
  49          (0x00FF0000 & v) >> 8  |
  50          (0xFF000000 & v) >> 24;
  51 }
  52
  53 inline uint16 ToBigEndian(uint16 v)
  54 {
  55   return v;
  56 }
  57
  58 inline uint32 ToBigEndian(uint32 v)
  59 {
  60   return v;
  61 }
  62
  63 #  else /* (IS_BIG_ENDIAN == 1) */
  64 #    define PLATFORM_LITTLE_ENDIAN
  65
  66 // platform conversion functions
  67 inline uint16 ToLittleEndian(uint16 v)
  68 {
  69   return v;
  70 }
  71
  72 inline uint32 ToLittleEndian(uint32 v)
  73 {
  74   return v;
  75 }
  76
  77 inline uint16 ToBigEndian(uint16 v)
  78 {
  79   return (0x00FF & v) << 8 |
  80          (0xFF00 & v) >> 8;
  81 }
  82
  83 inline uint32 ToBigEndian(uint32 v)
  84 {
  85   return (0x000000FF & v) << 24 |
  86          (0x0000FF00 & v) << 8  |
  87          (0x00FF0000 & v) >> 8  |
  88          (0xFF000000 & v) >> 24;
  89 }
  90
  91 #  endif /* (IS_BIG_ENDIAN == 1) */
  92 #endif /* IS_BIG_ENDIAN */
  93
  94 /*
  95  *  Platform/compiler detection
  96  */
  97
  98 #ifdef _MSC_VER
  99 #  define PLATFORM_MSVC
 100 #else
 101 #  ifdef __GNUC__
 102 #    define PLATFORM_GCC
 103 #    ifdef linux
 104 #      define PLATFORM_GCC_LINUX
 105 #    else
 106 #      define PLATFORM_GCC_WIN
 107 #    endif /* linux */
 108 #  else
 109 #    error Unknown compiler!
 110 #  endif /* __GNUC__ */
 111 #endif /* _MSC_VER */
 112
 113 #if defined(_DEBUG) && !defined(DEBUG)
 114 #  define DEBUG
 115 #endif
 116
 117 /*
 118  *  Platform dependent macros
 119  */
 120 #ifdef PLATFORM_MSVC
 121
 122 #  define lseek _lseek
 123 #  define read _read
 124 #  define write _write
 125
 126 #  define snprintf _snprintf
 127 #  define strcasecmp _stricmp
 128
 129    // to get clearer compiler output
 130 #  pragma warning( disable : 4290 )
 131 #  pragma warning( disable : 4996 )
 132
 133 // conversion from 'x' to 'y', possible loss of data
 134 #  pragma warning( disable : 4244 )
 135
 136 #  pragma warning( disable : 4345 )
 137
 138 #endif /* PLATFORM_MSVC */
 139
 140 #ifdef PLATFORM_GCC
 141
 142 #define __FUNCTION__ __PRETTY_FUNCTION__
 143
 144 #endif /* PLATFORM_GCC */
 145
 146 /*
 147  *  Build name - for creating project dependent logfiles, etc.
 148  */
 149 extern const char * gBuildName;