mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
40 lines
1.6 KiB
C
40 lines
1.6 KiB
C
|
/* Copyright (C) 2009 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, write to the Free
|
||
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||
|
|
02111-1307 USA. */
|
||
|
|
|
||
|
|
#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>
|