82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright © 2010 Rafaël Carré
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _GCC_EXTENSIONS_H_
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#define _GCC_EXTENSIONS_H_
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/* Support for some GCC extensions */
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/* Compile time check of format for printf/scanf like functions */
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#ifdef __GNUC__
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#define ATTRIBUTE_PRINTF(fmt, arg1) __attribute__( ( format( printf, fmt, arg1 ) ) )
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#define ATTRIBUTE_SCANF(fmt, arg1) __attribute__( ( format( scanf, fmt, arg1 ) ) )
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#else
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#define ATTRIBUTE_PRINTF(fmt, arg1)
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#define ATTRIBUTE_SCANF(fmt, arg1)
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#endif
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/* Use to give gcc hints on which branch is most likely taken */
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#if defined(__GNUC__) && __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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#if defined(__GNUC__) && (__GNUC__ >= 3 || \
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(__GNUC__ >= 2 && __GNUC_MINOR__ >= 5))
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#define NORETURN_ATTR __attribute__((noreturn))
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#else
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#define NORETURN_ATTR
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#endif
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#if defined(__GNUC__)
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#define FORCE_INLINE inline __attribute__((always_inline))
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#else
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#define FORCE_INLINE inline
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#endif
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#if defined(__GNUC__)
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#define NO_INLINE __attribute__((noinline))
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#else
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#define NO_INLINE
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#endif
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/* Version information from http://ohse.de/uwe/articles/gcc-attributes.html */
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#if defined(__GNUC__) && (__GNUC__ >= 4 || \
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(__GNUC__ >= 3 && __GNUC_MINOR__ >= 1))
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#define USED_ATTR __attribute__((used))
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#else
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#define USED_ATTR
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#endif
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#if defined(__GNUC__) && (__GNUC__ >= 3)
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#define UNUSED_ATTR __attribute__((unused))
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#else
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#define UNUSED_ATTR
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#endif
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#endif /* _GCC_EXTENSIONS_H_ */
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