]>
Commit | Line | Data |
---|---|---|
04277e02 | 1 | /* Copyright (C) 2009-2019 Free Software Foundation, Inc. |
f0e69449 AS |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff | 15 | License along with the GNU C Library. If not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
f0e69449 AS |
17 | |
18 | #include <stdio.h> | |
19 | #include <signal.h> | |
20 | #include <sysdep.h> | |
21 | #define __longjmp ____longjmp_chk | |
22 | #define CHECK_SP(sp) \ | |
23 | do { \ | |
24 | register unsigned long this_sp asm ("sp"); \ | |
25 | if ((unsigned long) (sp) < this_sp) \ | |
26 | { \ | |
75531318 | 27 | stack_t oss; \ |
f0e69449 AS |
28 | INTERNAL_SYSCALL_DECL (err); \ |
29 | int result = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \ | |
30 | if (!INTERNAL_SYSCALL_ERROR_P (result, err) \ | |
31 | && ((oss.ss_flags & SS_ONSTACK) == 0 \ | |
32 | || ((unsigned long) oss.ss_sp + oss.ss_size \ | |
33 | - (unsigned long) (sp)) < oss.ss_size)) \ | |
34 | __fortify_fail ("longjmp causes uninitialized stack frame"); \ | |
35 | } \ | |
36 | } while (0) | |
37 | ||
38 | #include <__longjmp.c> |