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Diffstat (limited to 'test/builtins/Unit/endianness.h')
| -rw-r--r-- | test/builtins/Unit/endianness.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/test/builtins/Unit/endianness.h b/test/builtins/Unit/endianness.h new file mode 100644 index 0000000000000..06c53de0bfa9a --- /dev/null +++ b/test/builtins/Unit/endianness.h @@ -0,0 +1,109 @@ +/* ===-- 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 */ |