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Diffstat (limited to 'gcc-4.9/libgcc/config/xtensa/unwind-dw2-xtensa.h')
-rw-r--r-- | gcc-4.9/libgcc/config/xtensa/unwind-dw2-xtensa.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/xtensa/unwind-dw2-xtensa.h b/gcc-4.9/libgcc/config/xtensa/unwind-dw2-xtensa.h new file mode 100644 index 000000000..c962ebb13 --- /dev/null +++ b/gcc-4.9/libgcc/config/xtensa/unwind-dw2-xtensa.h @@ -0,0 +1,49 @@ +/* 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; + |