| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 1 | /* ===-- endianness.h - configuration header for libgcc replacement --------=== |
| 2 | * |
| 3 | * The LLVM Compiler Infrastructure |
| 4 | * |
| Howard Hinnant | 9ad441f | 2010-11-16 22:13:33 +0000 | [diff] [blame] | 5 | * This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | * Source Licenses. See LICENSE.TXT for details. |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 7 | * |
| 8 | * ===----------------------------------------------------------------------=== |
| 9 | * |
| 10 | * This file is a configuration header for libgcc replacement. |
| 11 | * This file is not part of the interface of this library. |
| 12 | * |
| 13 | * ===----------------------------------------------------------------------=== |
| 14 | */ |
| 15 | |
| 16 | #ifndef ENDIANNESS_H |
| 17 | #define ENDIANNESS_H |
| 18 | |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 19 | /* |
| 20 | * Known limitations: |
| 21 | * Middle endian systems are not handled currently. |
| 22 | */ |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 23 | |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 24 | #if defined(__SVR4) && defined(__sun) |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 25 | #include <sys/byteorder.h> |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 26 | |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 27 | #if _BYTE_ORDER == _BIG_ENDIAN |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 28 | #define _YUGA_LITTLE_ENDIAN 0 |
| 29 | #define _YUGA_BIG_ENDIAN 1 |
| 30 | #elif _BYTE_ORDER == _LITTLE_ENDIAN |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 31 | #define _YUGA_LITTLE_ENDIAN 1 |
| 32 | #define _YUGA_BIG_ENDIAN 0 |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 33 | #endif /* _BYTE_ORDER */ |
| 34 | |
| 35 | #endif /* Solaris and AuroraUX. */ |
| 36 | |
| 37 | /* .. */ |
| 38 | |
| Rafael Espindola | b7a76d1 | 2012-01-05 23:59:42 +0000 | [diff] [blame] | 39 | #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonflyBSD__) || defined(__minix) |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 40 | #include <sys/endian.h> |
| 41 | |
| 42 | #if _BYTE_ORDER == _BIG_ENDIAN |
| 43 | #define _YUGA_LITTLE_ENDIAN 0 |
| 44 | #define _YUGA_BIG_ENDIAN 1 |
| 45 | #elif _BYTE_ORDER == _LITTLE_ENDIAN |
| 46 | #define _YUGA_LITTLE_ENDIAN 1 |
| 47 | #define _YUGA_BIG_ENDIAN 0 |
| 48 | #endif /* _BYTE_ORDER */ |
| 49 | |
| 50 | #endif /* *BSD */ |
| 51 | |
| 52 | /* .. */ |
| 53 | |
| Eric Christopher | 47a953e | 2012-09-20 06:19:20 +0000 | [diff] [blame] | 54 | #if defined(__OpenBSD__) || defined(__Bitrig__) |
| 55 | #include <machine/endian.h> |
| 56 | |
| 57 | #if _BYTE_ORDER == _BIG_ENDIAN |
| 58 | #define _YUGA_LITTLE_ENDIAN 0 |
| 59 | #define _YUGA_BIG_ENDIAN 1 |
| 60 | #elif _BYTE_ORDER == _LITTLE_ENDIAN |
| 61 | #define _YUGA_LITTLE_ENDIAN 1 |
| 62 | #define _YUGA_BIG_ENDIAN 0 |
| 63 | #endif /* _BYTE_ORDER */ |
| 64 | |
| 65 | #endif /* OpenBSD and Bitrig. */ |
| 66 | |
| 67 | /* .. */ |
| 68 | |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 69 | /* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the compiler (at least with GCC) */ |
| Edward O'Callaghan | e8178e2 | 2009-08-18 11:54:44 +0000 | [diff] [blame] | 70 | #if defined(__APPLE__) && defined(__MACH__) || defined(__ellcc__ ) |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 71 | |
| 72 | #ifdef __BIG_ENDIAN__ |
| 73 | #if __BIG_ENDIAN__ |
| 74 | #define _YUGA_LITTLE_ENDIAN 0 |
| 75 | #define _YUGA_BIG_ENDIAN 1 |
| 76 | #endif |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 77 | #endif /* __BIG_ENDIAN__ */ |
| 78 | |
| 79 | #ifdef __LITTLE_ENDIAN__ |
| 80 | #if __LITTLE_ENDIAN__ |
| 81 | #define _YUGA_LITTLE_ENDIAN 1 |
| 82 | #define _YUGA_BIG_ENDIAN 0 |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 83 | #endif |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 84 | #endif /* __LITTLE_ENDIAN__ */ |
| 85 | |
| 86 | #endif /* Mac OSX */ |
| 87 | |
| 88 | /* .. */ |
| 89 | |
| Edward O'Callaghan | 6ee8d33 | 2009-08-18 11:50:23 +0000 | [diff] [blame] | 90 | #if defined(__linux__) |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 91 | #include <endian.h> |
| 92 | |
| 93 | #if __BYTE_ORDER == __BIG_ENDIAN |
| 94 | #define _YUGA_LITTLE_ENDIAN 0 |
| 95 | #define _YUGA_BIG_ENDIAN 1 |
| 96 | #elif __BYTE_ORDER == __LITTLE_ENDIAN |
| 97 | #define _YUGA_LITTLE_ENDIAN 1 |
| 98 | #define _YUGA_BIG_ENDIAN 0 |
| 99 | #endif /* __BYTE_ORDER */ |
| 100 | |
| 101 | #endif /* GNU/Linux */ |
| 102 | |
| 103 | /* . */ |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 104 | |
| 105 | #if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN) |
| Edward O'Callaghan | bb119a4 | 2009-08-08 02:31:50 +0000 | [diff] [blame] | 106 | #error Unable to determine endian |
| 107 | #endif /* Check we found an endianness correctly. */ |
| Edward O'Callaghan | 686fd2a | 2009-08-05 19:58:45 +0000 | [diff] [blame] | 108 | |
| 109 | #endif /* ENDIANNESS_H */ |