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/* Copyright (C) 2009-2022 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
<https://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) \
{ \
stack_t oss; \
int result = INTERNAL_SYSCALL_CALL (sigaltstack, NULL, &oss); \
if (!INTERNAL_SYSCALL_ERROR_P (result) \
&& ((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>
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