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/* Copyright (C) 2009-2021 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 <signal.h>
#include <stdio.h>
#define __longjmp ____longjmp_chk
#define CHECK_SP(saved_sp, cur_sp, sp_type) \
do { \
sp_type sp_saved = (sp_type) (saved_sp); \
if (sp_saved < (cur_sp)) \
{ \
struct __jmp_buf_internal_tag *env_save = env_arg; \
int val_save = val_arg; \
stack_t ss; \
int ret = __sigaltstack (NULL, &ss); \
if (ret == 0 \
&& (!(ss.ss_flags & SS_ONSTACK) \
|| ((unsigned sp_type) ((sp_type) (long) ss.ss_sp \
+ (sp_type) ss.ss_size \
- sp_saved) \
< ss.ss_size))) \
__fortify_fail ("longjmp causes uninitialized stack frame"); \
asm volatile ("move %0, %1" : "=r" (env) : "r" (env_save)); \
asm volatile ("move %0, %1" : "=r" (val) : "r" (val_save)); \
} \
} while (0)
#include <__longjmp.c>
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