1  /* Copyright (C) 2005-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <setjmp.h>
      19  #include <stdint.h>
      20  #include <unwind.h>
      21  
      22  /* Test if longjmp to JMPBUF would unwind the frame
      23     containing a local variable at ADDRESS.  */
      24  #define _JMPBUF_UNWINDS(jmpbuf, address, demangle)	\
      25    ((unsigned long int) (address)			\
      26     < (jmpbuf)->__uc_mcontext.__mc_gregs[MC_O6] + 2047)
      27  
      28  #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
      29    _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
      30  
      31  #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
      32    ((uintptr_t) (_address) - (_adj) \
      33     < (uintptr_t) (_jmpbuf)[0].__uc_mcontext.__mc_gregs[MC_O6] + 2047 - (_adj))
      34  
      35  /* We use the normal lobngjmp for unwinding.  */
      36  #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)