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