1 /* Object size checking support macros. 2 Copyright (C) 2004, 2005, 2009 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 In addition to the permissions in the GNU General Public License, the 12 Free Software Foundation gives you unlimited permission to link the 13 compiled version of this file into combinations with other programs, 14 and to distribute those combinations without any restriction coming 15 from the use of this file. (The General Public License restrictions 16 do apply in other respects; for example, they cover modification of 17 the file, and distribution when not linked into a combine 18 executable.) 19 20 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 21 WARRANTY; without even the implied warranty of MERCHANTABILITY or 22 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 23 for more details. 24 25 Under Section 7 of GPL version 3, you are granted additional 26 permissions described in the GCC Runtime Library Exception, version 27 3.1, as published by the Free Software Foundation. 28 29 You should have received a copy of the GNU General Public License and 30 a copy of the GCC Runtime Library Exception along with this program; 31 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 32 <http://www.gnu.org/licenses/>. */ 33 34 35 #ifndef _SSP_H 36 #define _SSP_H 1 37 38 #if _FORTIFY_SOURCE > 0 && __OPTIMIZE__ > 0 \ 39 && defined __GNUC__ \ 40 && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)) \ 41 && !defined __cplusplus 42 # if _FORTIFY_SOURCE == 1 43 # define __SSP_FORTIFY_LEVEL 1 44 # elif _FORTIFY_SOURCE > 1 45 # define __SSP_FORTIFY_LEVEL 2 46 # endif 47 #endif 48 49 #if __SSP_FORTIFY_LEVEL > 0 50 # include <stddef.h> 51 # define __ssp_bos(ptr) __builtin_object_size (ptr, __SSP_FORTIFY_LEVEL > 1) 52 # define __ssp_bos0(ptr) __builtin_object_size (ptr, 0) 53 54 # define __SSP_REDIRECT(name, proto, alias) \ 55 name proto __asm__ (__SSP_ASMNAME (#alias)) 56 # define __SSP_ASMNAME(cname) __SSP_ASMNAME2 (__USER_LABEL_PREFIX__, cname) 57 # define __SSP_ASMNAME2(prefix, cname) __SSP_ASMNAME3 (prefix) cname 58 # define __SSP_ASMNAME3(prefix) #prefix 59 60 # undef __SSP_HAVE_VSNPRINTF 61 62 extern void __chk_fail (void) __attribute__((__noreturn__)); 63 #endif 64 65 #endif /* _SSP_H */ 66
