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
