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/* DWARF2 frame unwind data structure for Xtensa.
Copyright (C) 1997-2014 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
/* A target can override (perhaps for backward compatibility) how
many dwarf2 columns are unwound. */
#ifndef DWARF_FRAME_REGISTERS
#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
#endif
/* Xtensa's variable-size register window save areas can be unwound without
any unwind info. This is a stripped down version of the standard DWARF
_Unwind_FrameState. */
typedef struct
{
/* The information we care about from the CIE/FDE. */
_Unwind_Personality_Fn personality;
_Unwind_Word retaddr_column;
unsigned char fde_encoding;
unsigned char lsda_encoding;
unsigned char saw_z;
unsigned char signal_frame;
void *eh_ptr;
/* Saved registers for a signal frame. */
_Unwind_Word *signal_regs;
_Unwind_Word signal_ra;
} _Unwind_FrameState;
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