1 /* libunwind - a platform-independent unwind library 2 Copyright (C) 2001-2005 Hewlett-Packard Co 3 Copyright (C) 2007 David Mosberger-Tang 4 Contributed by David Mosberger-Tang <dmosberger (at) gmail.com> 5 6 This file is part of libunwind. 7 8 Permission is hereby granted, free of charge, to any person obtaining 9 a copy of this software and associated documentation files (the 10 "Software"), to deal in the Software without restriction, including 11 without limitation the rights to use, copy, modify, merge, publish, 12 distribute, sublicense, and/or sell copies of the Software, and to 13 permit persons to whom the Software is furnished to do so, subject to 14 the following conditions: 15 16 The above copyright notice and this permission notice shall be 17 included in all copies or substantial portions of the Software. 18 19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 20 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 22 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 23 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 24 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 25 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 26 27 /* Compiler specific useful bits that are used in libunwind, and also in the 28 * tests. */ 29 30 #ifndef COMPILER_H 31 #define COMPILER_H 32 33 #ifdef __GNUC__ 34 # define ALIGNED(x) __attribute__((aligned(x))) 35 # define CONST_ATTR __attribute__((__const__)) 36 # define UNUSED __attribute__((unused)) 37 # define NOINLINE __attribute__((noinline)) 38 # define NORETURN __attribute__((noreturn)) 39 # define ALIAS(name) __attribute__((alias (#name))) 40 # if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ > 2) 41 # define ALWAYS_INLINE inline __attribute__((always_inline)) 42 # define HIDDEN __attribute__((visibility ("hidden"))) 43 # define PROTECTED __attribute__((visibility ("protected"))) 44 # else 45 # define ALWAYS_INLINE 46 # define HIDDEN 47 # define PROTECTED 48 # endif 49 # define WEAK __attribute__((weak)) 50 # if (__GNUC__ >= 3) 51 # define likely(x) __builtin_expect ((x), 1) 52 # define unlikely(x) __builtin_expect ((x), 0) 53 # else 54 # define likely(x) (x) 55 # define unlikely(x) (x) 56 # endif 57 #else 58 # define ALIGNED(x) 59 # define ALWAYS_INLINE 60 # define CONST_ATTR 61 # define UNUSED 62 # define NOINLINE 63 # define NORETURN 64 # define ALIAS(name) 65 # define HIDDEN 66 # define PROTECTED 67 # define WEAK 68 # define likely(x) (x) 69 # define unlikely(x) (x) 70 #endif 71 72 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 73 74 #endif /* COMPILER_H */ 75
