| 1 | /* Dwarf2 location expression support for GDB. |
| 2 | Copyright 2003 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #if !defined (DWARF2LOC_H) |
| 22 | #define DWARF2LOC_H |
| 23 | |
| 24 | struct symbol_ops; |
| 25 | |
| 26 | /* This header is private to the DWARF-2 reader. It is shared between |
| 27 | dwarf2read.c and dwarf2loc.c. */ |
| 28 | |
| 29 | /* The symbol location baton types used by the DWARF-2 reader (i.e. |
| 30 | SYMBOL_LOCATION_BATON for a LOC_COMPUTED symbol). "struct |
| 31 | dwarf2_locexpr_baton" is for a symbol with a single location |
| 32 | expression; "struct dwarf2_loclist_baton" is for a symbol with a |
| 33 | location list. */ |
| 34 | |
| 35 | struct dwarf2_locexpr_baton |
| 36 | { |
| 37 | /* Pointer to the start of the location expression. */ |
| 38 | unsigned char *data; |
| 39 | |
| 40 | /* Length of the location expression. */ |
| 41 | unsigned short size; |
| 42 | |
| 43 | /* The objfile containing the symbol whose location we're computing. */ |
| 44 | struct objfile *objfile; |
| 45 | }; |
| 46 | |
| 47 | struct dwarf2_loclist_baton |
| 48 | { |
| 49 | /* The initial base address for the location list, based on the compilation |
| 50 | unit. */ |
| 51 | CORE_ADDR base_address; |
| 52 | |
| 53 | /* Pointer to the start of the location list. */ |
| 54 | unsigned char *data; |
| 55 | |
| 56 | /* Length of the location list. */ |
| 57 | unsigned short size; |
| 58 | |
| 59 | /* The objfile containing the symbol whose location we're computing. */ |
| 60 | /* Used (only???) by thread local variables. The objfile in which |
| 61 | this symbol is defined. To find a thread-local variable (e.g., a |
| 62 | variable declared with the `__thread' storage class), we may need |
| 63 | to know which object file it's in. */ |
| 64 | struct objfile *objfile; |
| 65 | }; |
| 66 | |
| 67 | extern const struct symbol_ops dwarf2_locexpr_funcs; |
| 68 | extern const struct symbol_ops dwarf2_loclist_funcs; |
| 69 | |
| 70 | #endif |