Mercurial > hg > CbC > CbC_gcc
comparison gcc/config/xtensa/unwind-dw2-xtensa.h @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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1 /* DWARF2 frame unwind data structure for Xtensa. | |
2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008, | |
3 2009 Free Software Foundation, Inc. | |
4 | |
5 This file is part of GCC. | |
6 | |
7 GCC is free software; you can redistribute it and/or modify it | |
8 under the terms of the GNU General Public License as published by | |
9 the Free Software Foundation; either version 3, or (at your option) | |
10 any later version. | |
11 | |
12 GCC is distributed in the hope that it will be useful, but WITHOUT | |
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 License for more details. | |
16 | |
17 Under Section 7 of GPL version 3, you are granted additional | |
18 permissions described in the GCC Runtime Library Exception, version | |
19 3.1, as published by the Free Software Foundation. | |
20 | |
21 You should have received a copy of the GNU General Public License and | |
22 a copy of the GCC Runtime Library Exception along with this program; | |
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 <http://www.gnu.org/licenses/>. */ | |
25 | |
26 /* A target can override (perhaps for backward compatibility) how | |
27 many dwarf2 columns are unwound. */ | |
28 #ifndef DWARF_FRAME_REGISTERS | |
29 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER | |
30 #endif | |
31 | |
32 /* Xtensa's variable-size register window save areas can be unwound without | |
33 any unwind info. This is a stripped down version of the standard DWARF | |
34 _Unwind_FrameState. */ | |
35 typedef struct | |
36 { | |
37 /* The information we care about from the CIE/FDE. */ | |
38 _Unwind_Personality_Fn personality; | |
39 _Unwind_Word retaddr_column; | |
40 unsigned char fde_encoding; | |
41 unsigned char lsda_encoding; | |
42 unsigned char saw_z; | |
43 unsigned char signal_frame; | |
44 void *eh_ptr; | |
45 | |
46 /* Saved registers for a signal frame. */ | |
47 _Unwind_Word *signal_regs; | |
48 _Unwind_Word signal_ra; | |
49 } _Unwind_FrameState; | |
50 |