| #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 */ |
| |
| /* .. */ |
| |
| #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__) |
| #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 */ |
| |
| /* .. */ |
| |
| /* 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 */ |
