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AuroraUX was an operating system project based on an OpenSolaris kernel and an Ada userland. There appear to be no public code or release available online anymore. The project page on Wikipedia [1] was deleted in January 2012, and a news item [2] from November 2012 has more details. [1] https://en.wikipedia.org/w/index.php?title=Special:Log/delete&page=AuroraUX [2] https://www.phoronix.com/scan.php?page=news_item&px=MTIyMTI
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
//===-- int_endianness.h - configuration header for compiler-rt -----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a configuration header for compiler-rt.
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// This file is not part of the interface of this library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef INT_ENDIANNESS_H
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#define INT_ENDIANNESS_H
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#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
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defined(__ORDER_LITTLE_ENDIAN__)
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// Clang and GCC provide built-in endianness definitions.
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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#define _YUGA_LITTLE_ENDIAN 0
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#define _YUGA_BIG_ENDIAN 1
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#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#endif // __BYTE_ORDER__
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#else // Compilers other than Clang or GCC.
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#if defined(__SVR4) && defined(__sun)
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#include <sys/byteorder.h>
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#if defined(_BIG_ENDIAN)
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#define _YUGA_LITTLE_ENDIAN 0
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#define _YUGA_BIG_ENDIAN 1
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#elif defined(_LITTLE_ENDIAN)
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#else // !_LITTLE_ENDIAN
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#error "unknown endianness"
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#endif // !_LITTLE_ENDIAN
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#endif // Solaris
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// ..
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#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
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defined(__minix)
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#include <sys/endian.h>
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#if _BYTE_ORDER == _BIG_ENDIAN
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#define _YUGA_LITTLE_ENDIAN 0
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#define _YUGA_BIG_ENDIAN 1
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#elif _BYTE_ORDER == _LITTLE_ENDIAN
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#endif // _BYTE_ORDER
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#endif // *BSD
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#if defined(__OpenBSD__)
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#include <machine/endian.h>
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#if _BYTE_ORDER == _BIG_ENDIAN
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#define _YUGA_LITTLE_ENDIAN 0
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#define _YUGA_BIG_ENDIAN 1
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#elif _BYTE_ORDER == _LITTLE_ENDIAN
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#endif // _BYTE_ORDER
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#endif // OpenBSD
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// ..
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// Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the
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// compiler (at least with GCC)
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#if defined(__APPLE__) || defined(__ellcc__)
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#ifdef __BIG_ENDIAN__
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#if __BIG_ENDIAN__
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#define _YUGA_LITTLE_ENDIAN 0
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#define _YUGA_BIG_ENDIAN 1
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#endif
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#endif // __BIG_ENDIAN__
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#ifdef __LITTLE_ENDIAN__
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#if __LITTLE_ENDIAN__
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#endif
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#endif // __LITTLE_ENDIAN__
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#endif // Mac OSX
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// ..
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#if defined(_WIN32)
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#endif // Windows
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#endif // Clang or GCC.
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// .
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#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN)
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#error Unable to determine endian
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#endif // Check we found an endianness correctly.
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#endif // INT_ENDIANNESS_H
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