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glibc  2.9
jmpbuf-unwind.h
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00001 /* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by David S. Miller <davem@davemloft.net>, 2005.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <setjmp.h>
00021 #include <stdint.h>
00022 #include <unwind.h>
00023 
00024 /* Test if longjmp to JMPBUF would unwind the frame
00025    containing a local variable at ADDRESS.  */
00026 #define _JMPBUF_UNWINDS(jmpbuf, address, demangle)                    \
00027   ((unsigned long int) (address) < (jmpbuf)->uc_mcontext.mc_fp + 2047)
00028 
00029 #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
00030   _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
00031 
00032 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
00033   ((uintptr_t) (_address) - (_adj) \
00034    < (uintptr_t) (_jmpbuf)[0].uc_mcontext.mc_fp + 2047 - (_adj))
00035 
00036 /* We use the normal lobngjmp for unwinding.  */
00037 #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)