src/mesa/main/compiler.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   5  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 /**
  28  * \file compiler.h
  29  * Compiler-related stuff.
  30  */
  31
  32
  33 #ifndef COMPILER_H
  34 #define COMPILER_H
  35
  36
  37 #include <assert.h>
  38
  39 #include "util/macros.h"
  40
  41 #include "c99_compat.h" /* inline, __func__, etc. */
  42
  43
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48
  49 /**
  50   * Sun compilers define __i386 instead of the gcc-style __i386__
  51  */
  52 #ifdef __SUNPRO_C
  53 # if !defined(__i386__) && defined(__i386)
  54 #  define __i386__
  55 # elif !defined(__amd64__) && defined(__amd64)
  56 #  define __amd64__
  57 # elif !defined(__sparc__) && defined(__sparc)
  58 #  define __sparc__
  59 # endif
  60 #endif
  61
  62
  63 /**
  64  * Disable assorted warnings
  65  */
  66 #if defined(_WIN32) && !defined(__CYGWIN__)
  67 #  if !defined(__GNUC__) /* mingw environment */
  68 #    pragma warning( disable : 4068 ) /* unknown pragma */
  69 #    pragma warning( disable : 4710 ) /* function 'foo' not inlined */
  70 #    pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
  71 #    pragma warning( disable : 4127 ) /* conditional expression is constant */
  72 #    if defined(MESA_MINWARN)
  73 #      pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
  74 #      pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
  75 #      pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
  76 #      pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
  77 #      pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
  78 #    endif
  79 #  endif
  80 #endif
  81
  82
  83 /* XXX: Use standard `__func__` instead */
  84 #ifndef __FUNCTION__
  85 #  define __FUNCTION__ __func__
  86 #endif
  87
  88 /**
  89  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN, and CPU_TO_LE32.
  90  * Do not use these unless absolutely necessary!
  91  * Try to use a runtime test instead.
  92  * For now, only used by some DRI hardware drivers for color/texel packing.
  93  */
  94 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
  95 #if defined(__linux__)
  96 #include <byteswap.h>
  97 #define CPU_TO_LE32( x )        bswap_32( x )
  98 #elif defined(__APPLE__)
  99 #include <CoreFoundation/CFByteOrder.h>
 100 #define CPU_TO_LE32( x )        CFSwapInt32HostToLittle( x )
 101 #elif defined(__OpenBSD__)
 102 #include <sys/types.h>
 103 #define CPU_TO_LE32( x )        htole32( x )
 104 #else /*__linux__ */
 105 #include <sys/endian.h>
 106 #define CPU_TO_LE32( x )        bswap32( x )
 107 #endif /*__linux__*/
 108 #define MESA_BIG_ENDIAN 1
 109 #else
 110 #define CPU_TO_LE32( x )        ( x )
 111 #define MESA_LITTLE_ENDIAN 1
 112 #endif
 113 #define LE32_TO_CPU( x )        CPU_TO_LE32( x )
 114
 115
 116
 117 #define IEEE_ONE 0x3f800000
 118
 119
 120 #ifdef __cplusplus
 121 }
 122 #endif
 123
 124
 125 #endif /* COMPILER_H */