| /* Copyright (C) 2009-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdio.h> |
| #include <signal.h> |
| #include <sysdep.h> |
| #define __longjmp ____longjmp_chk |
| #define CHECK_SP(sp) \ |
| do { \ |
| register unsigned long this_sp asm ("sp"); \ |
| if ((unsigned long) (sp) < this_sp) \ |
| { \ |
| struct sigaltstack oss; \ |
| INTERNAL_SYSCALL_DECL (err); \ |
| int result = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \ |
| if (!INTERNAL_SYSCALL_ERROR_P (result, err) \ |
| && ((oss.ss_flags & SS_ONSTACK) == 0 \ |
| || ((unsigned long) oss.ss_sp + oss.ss_size \ |
| - (unsigned long) (sp)) < oss.ss_size)) \ |
| __fortify_fail ("longjmp causes uninitialized stack frame"); \ |
| } \ |
| } while (0) |
| |
| #include <__longjmp.c> |
