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75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2001-2005 Hewlett-Packard Co
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Copyright (C) 2007 David Mosberger-Tang
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Contributed by David Mosberger-Tang <dmosberger@gmail.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/* Compiler specific useful bits that are used in libunwind, and also in the
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* tests. */
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#ifndef COMPILER_H
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#define COMPILER_H
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#ifdef __GNUC__
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# define ALIGNED(x) __attribute__((aligned(x)))
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# define CONST_ATTR __attribute__((__const__))
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# define UNUSED __attribute__((unused))
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# define NOINLINE __attribute__((noinline))
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# define NORETURN __attribute__((noreturn))
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# define ALIAS(name) __attribute__((alias (#name)))
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# if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
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# define ALWAYS_INLINE inline __attribute__((always_inline))
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# define HIDDEN __attribute__((visibility ("hidden")))
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# define PROTECTED __attribute__((visibility ("protected")))
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# else
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# define ALWAYS_INLINE
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# define HIDDEN
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# define PROTECTED
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# endif
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# define WEAK __attribute__((weak))
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# if (__GNUC__ >= 3)
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# define likely(x) __builtin_expect ((x), 1)
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# define unlikely(x) __builtin_expect ((x), 0)
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# else
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# define likely(x) (x)
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# define unlikely(x) (x)
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# endif
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#else
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# define ALIGNED(x)
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# define ALWAYS_INLINE
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# define CONST_ATTR
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# define UNUSED
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# define NOINLINE
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# define NORETURN
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# define ALIAS(name)
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# define HIDDEN
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# define PROTECTED
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# define WEAK
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# define likely(x) (x)
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# define unlikely(x) (x)
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#endif
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#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
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#endif /* COMPILER_H */
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