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42 lines
1.6 KiB
C
42 lines
1.6 KiB
C
/* Copyright (C) 2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <signal.h>
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#include <stdio.h>
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#define __longjmp ____longjmp_chk
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#define CHECK_SP(saved_sp, cur_sp, sp_type) \
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do { \
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sp_type sp_saved = (sp_type) (saved_sp); \
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if (sp_saved < (cur_sp)) \
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{ \
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struct __jmp_buf_internal_tag *env_save = env_arg; \
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int val_save = val_arg; \
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stack_t ss; \
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int ret = __sigaltstack (NULL, &ss); \
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if (ret == 0 \
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&& (!(ss.ss_flags & SS_ONSTACK) \
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|| ((unsigned sp_type) ((sp_type) ss.ss_sp \
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+ (sp_type) ss.ss_size \
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- sp_saved) \
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< ss.ss_size))) \
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__fortify_fail ("longjmp causes uninitialized stack frame"); \
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asm volatile ("move %0, %1" : "=r" (env) : "r" (env_save)); \
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asm volatile ("move %0, %1" : "=r" (val) : "r" (val_save)); \
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} \
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} while (0)
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#include <__longjmp.c>
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