1/* ===-- int_endianness.h - configuration header for compiler-rt ------------=== 2 * 3 * The LLVM Compiler Infrastructure 4 * 5 * This file is dual licensed under the MIT and the University of Illinois Open 6 * Source Licenses. See LICENSE.TXT for details. 7 * 8 * ===----------------------------------------------------------------------=== 9 * 10 * This file is a configuration header for compiler-rt. 11 * This file is not part of the interface of this library. 12 * 13 * ===----------------------------------------------------------------------=== 14 */ 15 16#ifndef INT_ENDIANNESS_H 17#define INT_ENDIANNESS_H 18 19#if defined(__SVR4) && defined(__sun) 20#include <sys/byteorder.h> 21 22#if _BYTE_ORDER == _BIG_ENDIAN 23#define _YUGA_LITTLE_ENDIAN 0 24#define _YUGA_BIG_ENDIAN 1 25#elif _BYTE_ORDER == _LITTLE_ENDIAN 26#define _YUGA_LITTLE_ENDIAN 1 27#define _YUGA_BIG_ENDIAN 0 28#endif /* _BYTE_ORDER */ 29 30#endif /* Solaris and AuroraUX. */ 31 32/* .. */ 33 34#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__minix) 35#include <sys/endian.h> 36 37#if _BYTE_ORDER == _BIG_ENDIAN 38#define _YUGA_LITTLE_ENDIAN 0 39#define _YUGA_BIG_ENDIAN 1 40#elif _BYTE_ORDER == _LITTLE_ENDIAN 41#define _YUGA_LITTLE_ENDIAN 1 42#define _YUGA_BIG_ENDIAN 0 43#endif /* _BYTE_ORDER */ 44 45#endif /* *BSD */ 46 47#if defined(__OpenBSD__) || defined(__Bitrig__) 48#include <machine/endian.h> 49 50#if _BYTE_ORDER == _BIG_ENDIAN 51#define _YUGA_LITTLE_ENDIAN 0 52#define _YUGA_BIG_ENDIAN 1 53#elif _BYTE_ORDER == _LITTLE_ENDIAN 54#define _YUGA_LITTLE_ENDIAN 1 55#define _YUGA_BIG_ENDIAN 0 56#endif /* _BYTE_ORDER */ 57 58#endif /* OpenBSD and Bitrig. */ 59 60/* .. */ 61 62/* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC) */ 63#if defined(__APPLE__) && defined(__MACH__) || defined(__ellcc__ ) 64 65#ifdef __BIG_ENDIAN__ 66#if __BIG_ENDIAN__ 67#define _YUGA_LITTLE_ENDIAN 0 68#define _YUGA_BIG_ENDIAN 1 69#endif 70#endif /* __BIG_ENDIAN__ */ 71 72#ifdef __LITTLE_ENDIAN__ 73#if __LITTLE_ENDIAN__ 74#define _YUGA_LITTLE_ENDIAN 1 75#define _YUGA_BIG_ENDIAN 0 76#endif 77#endif /* __LITTLE_ENDIAN__ */ 78 79#endif /* Mac OSX */ 80 81/* .. */ 82 83#if defined(__linux__) 84#include <endian.h> 85 86#if __BYTE_ORDER == __BIG_ENDIAN 87#define _YUGA_LITTLE_ENDIAN 0 88#define _YUGA_BIG_ENDIAN 1 89#elif __BYTE_ORDER == __LITTLE_ENDIAN 90#define _YUGA_LITTLE_ENDIAN 1 91#define _YUGA_BIG_ENDIAN 0 92#endif /* __BYTE_ORDER */ 93 94#endif /* GNU/Linux */ 95 96#if defined(_WIN32) 97 98#define _YUGA_LITTLE_ENDIAN 1 99#define _YUGA_BIG_ENDIAN 0 100 101#endif /* Windows */ 102 103/* . */ 104 105#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN) 106#error Unable to determine endian 107#endif /* Check we found an endianness correctly. */ 108 109#endif /* INT_ENDIANNESS_H */ 110