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40 lines
1.6 KiB
C
40 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <signal.h>
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#include <sysdep.h>
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#define __longjmp ____longjmp_chk
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#define CHECK_SP(sp) \
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do { \
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register unsigned long this_sp asm ("sp"); \
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if ((unsigned long) (sp) < this_sp) \
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{ \
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struct sigaltstack oss; \
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INTERNAL_SYSCALL_DECL (err); \
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int result = INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &oss); \
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if (!INTERNAL_SYSCALL_ERROR_P (result, err) \
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&& ((oss.ss_flags & SS_ONSTACK) == 0 \
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|| ((unsigned long) oss.ss_sp + oss.ss_size \
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- (unsigned long) (sp)) < oss.ss_size)) \
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__fortify_fail ("longjmp causes uninitialized stack frame"); \
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} \
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} while (0)
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#include <__longjmp.c>
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