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