2014-01-01 11:03:15 +00:00
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/* Copyright (C) 2003-2014 Free Software Foundation, Inc.
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2003-09-04 05:57:06 +00:00
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
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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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2012-02-09 23:18:22 +00:00
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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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2003-09-04 05:57:06 +00:00
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#include <setjmp.h>
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2006-01-12 09:29:29 +00:00
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#include <jmpbuf-offsets.h>
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2003-12-19 01:37:13 +00:00
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#include <stdint.h>
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2003-09-04 05:57:06 +00:00
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#include <unwind.h>
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2004-10-06 17:40:56 +00:00
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#include <bits/wordsize.h>
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2005-12-28 05:42:30 +00:00
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#include <sysdep.h>
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2003-09-04 05:57:06 +00:00
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2006-01-10 08:54:22 +00:00
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/* Test if longjmp to JMPBUF would unwind the frame
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containing a local variable at ADDRESS. */
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#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
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((void *) (address) < (void *) demangle ((jmpbuf)->__gregs[__JB_GPR15]))
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2004-10-06 17:40:56 +00:00
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/* On s390{,x}, CFA is always 96 (resp. 160) bytes above actual
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%r15. */
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2003-12-19 01:37:13 +00:00
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#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
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2004-10-06 17:40:56 +00:00
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_JMPBUF_UNWINDS_ADJ (_jmpbuf, \
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(void *) (_Unwind_GetCFA (_context) \
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- 32 - 2 * __WORDSIZE), _adj)
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2003-12-19 01:37:13 +00:00
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2005-12-28 05:42:30 +00:00
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static inline uintptr_t __attribute__ ((unused))
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_jmpbuf_sp (__jmp_buf regs)
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{
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2012-12-08 07:33:24 +00:00
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void *sp = (void *) (uintptr_t) regs[0].__gregs[__JB_GPR15];
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2005-12-28 05:42:30 +00:00
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE (sp);
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#endif
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2012-12-08 07:33:24 +00:00
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return (uintptr_t) sp;
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2005-12-28 05:42:30 +00:00
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}
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#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
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((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))
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2004-09-02 22:47:23 +00:00
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2004-10-06 17:40:56 +00:00
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/* We use the normal longjmp for unwinding. */
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2004-09-02 22:47:23 +00:00
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#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
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