/* DWARF2 frame unwind data structure for Xtensa.
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/* DWARF2 frame unwind data structure for Xtensa.
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008,
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008,
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2009 Free Software Foundation, Inc.
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2009 Free Software Foundation, Inc.
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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/* A target can override (perhaps for backward compatibility) how
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/* A target can override (perhaps for backward compatibility) how
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many dwarf2 columns are unwound. */
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many dwarf2 columns are unwound. */
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#ifndef DWARF_FRAME_REGISTERS
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#ifndef DWARF_FRAME_REGISTERS
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#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
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#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
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#endif
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#endif
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/* Xtensa's variable-size register window save areas can be unwound without
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/* Xtensa's variable-size register window save areas can be unwound without
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any unwind info. This is a stripped down version of the standard DWARF
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any unwind info. This is a stripped down version of the standard DWARF
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_Unwind_FrameState. */
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_Unwind_FrameState. */
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typedef struct
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typedef struct
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{
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{
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/* The information we care about from the CIE/FDE. */
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/* The information we care about from the CIE/FDE. */
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_Unwind_Personality_Fn personality;
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_Unwind_Personality_Fn personality;
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_Unwind_Word retaddr_column;
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_Unwind_Word retaddr_column;
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unsigned char fde_encoding;
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unsigned char fde_encoding;
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unsigned char lsda_encoding;
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unsigned char lsda_encoding;
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unsigned char saw_z;
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unsigned char saw_z;
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unsigned char signal_frame;
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unsigned char signal_frame;
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void *eh_ptr;
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void *eh_ptr;
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/* Saved registers for a signal frame. */
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/* Saved registers for a signal frame. */
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_Unwind_Word *signal_regs;
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_Unwind_Word *signal_regs;
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_Unwind_Word signal_ra;
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_Unwind_Word signal_ra;
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} _Unwind_FrameState;
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} _Unwind_FrameState;
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