/* * Mesa 3-D graphics library * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * Copyright (C) 2009 VMware, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ /** * \file compiler.h * Compiler-related stuff. */ #ifndef COMPILER_H #define COMPILER_H #include <assert.h> #include "util/macros.h" #include "c99_compat.h" /* inline, __func__, etc. */ /** * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN, and CPU_TO_LE32. * Do not use these unless absolutely necessary! * Try to use a runtime test instead. * For now, only used by some DRI hardware drivers for color/texel packing. */ #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN #if defined(__linux__) #include <byteswap.h> #define CPU_TO_LE32( x ) bswap_32( x ) #elif defined(__APPLE__) #include <CoreFoundation/CFByteOrder.h> #define CPU_TO_LE32( x ) CFSwapInt32HostToLittle( x ) #elif defined(__OpenBSD__) #include <sys/types.h> #define CPU_TO_LE32( x ) htole32( x ) #else /*__linux__ */ #include <sys/endian.h> #define CPU_TO_LE32( x ) bswap32( x ) #endif /*__linux__*/ #define MESA_BIG_ENDIAN 1 #else #define CPU_TO_LE32( x ) ( x ) #define MESA_LITTLE_ENDIAN 1 #endif #define LE32_TO_CPU( x ) CPU_TO_LE32( x ) #define IEEE_ONE 0x3f800000 #endif /* COMPILER_H */