1  /* DWARF2 frame unwind data structure for Xtensa.
       2     Copyright (C) 1997-2023 Free Software Foundation, Inc.
       3  
       4     This file is part of GCC.
       5  
       6     GCC is free software; you can redistribute it and/or modify it
       7     under the terms of the GNU General Public License as published by
       8     the Free Software Foundation; either version 3, or (at your option)
       9     any later version.
      10  
      11     GCC is distributed in the hope that it will be useful, but WITHOUT
      12     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      13     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
      14     License for more details.
      15  
      16     Under Section 7 of GPL version 3, you are granted additional
      17     permissions described in the GCC Runtime Library Exception, version
      18     3.1, as published by the Free Software Foundation.
      19  
      20     You should have received a copy of the GNU General Public License and
      21     a copy of the GCC Runtime Library Exception along with this program;
      22     see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      23     <http://www.gnu.org/licenses/>.  */
      24  
      25  /* Xtensa's variable-size register window save areas can be unwound without
      26     any unwind info.  This is a stripped down version of the standard DWARF
      27     _Unwind_FrameState.  */
      28  typedef struct
      29  {
      30    /* The information we care about from the CIE/FDE.  */
      31    _Unwind_Personality_Fn personality;
      32    _Unwind_Word retaddr_column;
      33    unsigned char fde_encoding;
      34    unsigned char lsda_encoding;
      35    unsigned char saw_z;
      36    unsigned char signal_frame;
      37    void *eh_ptr;
      38  
      39    /* Saved registers for a signal frame.  */
      40    _Unwind_Word *signal_regs;
      41    _Unwind_Word signal_ra;
      42  } _Unwind_FrameState;
      43