Commit | Line | Data |
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852483bc MK |
1 | /* DWARF 2 location expression support for GDB. |
2 | ||
4c38e0a4 JB |
3 | Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010 |
4 | Free Software Foundation, Inc. | |
4c2df51b DJ |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
4c2df51b DJ |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
4c2df51b DJ |
20 | |
21 | #if !defined (DWARF2LOC_H) | |
22 | #define DWARF2LOC_H | |
23 | ||
768a979c | 24 | struct symbol_computed_ops; |
ae0d2f24 UW |
25 | struct objfile; |
26 | struct dwarf2_per_cu_data; | |
a67af2b9 | 27 | |
4c2df51b DJ |
28 | /* This header is private to the DWARF-2 reader. It is shared between |
29 | dwarf2read.c and dwarf2loc.c. */ | |
30 | ||
9aa1f1e3 TT |
31 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
32 | came from a separate debuginfo file, then the master objfile is | |
33 | returned. */ | |
ae0d2f24 UW |
34 | struct objfile *dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *cu); |
35 | ||
36 | /* Return the address size given in the compilation unit header for CU. */ | |
37 | CORE_ADDR dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *cu); | |
38 | ||
9eae7c52 TT |
39 | /* Return the offset size given in the compilation unit header for CU. */ |
40 | int dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *cu); | |
41 | ||
9aa1f1e3 TT |
42 | /* Return the text offset of the CU. The returned offset comes from |
43 | this CU's objfile. If this objfile came from a separate debuginfo | |
44 | file, then the offset may be different from the corresponding | |
45 | offset in the parent objfile. */ | |
46 | CORE_ADDR dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *cu); | |
47 | ||
5c631832 JK |
48 | struct dwarf2_locexpr_baton dwarf2_fetch_die_location_block |
49 | (unsigned int offset, struct dwarf2_per_cu_data *per_cu); | |
50 | ||
98bfdba5 PA |
51 | /* Evaluate a location description, starting at DATA and with length |
52 | SIZE, to find the current location of variable of TYPE in the context | |
53 | of FRAME. */ | |
54 | ||
55 | struct value *dwarf2_evaluate_loc_desc (struct type *type, | |
56 | struct frame_info *frame, | |
57 | const gdb_byte *data, | |
58 | unsigned short size, | |
59 | struct dwarf2_per_cu_data *per_cu); | |
60 | ||
0d53c4c4 DJ |
61 | /* The symbol location baton types used by the DWARF-2 reader (i.e. |
62 | SYMBOL_LOCATION_BATON for a LOC_COMPUTED symbol). "struct | |
63 | dwarf2_locexpr_baton" is for a symbol with a single location | |
64 | expression; "struct dwarf2_loclist_baton" is for a symbol with a | |
65 | location list. */ | |
4c2df51b DJ |
66 | |
67 | struct dwarf2_locexpr_baton | |
68 | { | |
0d53c4c4 | 69 | /* Pointer to the start of the location expression. */ |
947bb88f | 70 | const gdb_byte *data; |
0d53c4c4 DJ |
71 | |
72 | /* Length of the location expression. */ | |
607269ae | 73 | unsigned long size; |
0d53c4c4 | 74 | |
ae0d2f24 UW |
75 | /* The compilation unit containing the symbol whose location |
76 | we're computing. */ | |
77 | struct dwarf2_per_cu_data *per_cu; | |
0d53c4c4 DJ |
78 | }; |
79 | ||
80 | struct dwarf2_loclist_baton | |
81 | { | |
82 | /* The initial base address for the location list, based on the compilation | |
83 | unit. */ | |
84 | CORE_ADDR base_address; | |
85 | ||
86 | /* Pointer to the start of the location list. */ | |
947bb88f | 87 | const gdb_byte *data; |
0d53c4c4 DJ |
88 | |
89 | /* Length of the location list. */ | |
607269ae | 90 | unsigned long size; |
0d53c4c4 | 91 | |
ae0d2f24 UW |
92 | /* The compilation unit containing the symbol whose location |
93 | we're computing. */ | |
94 | struct dwarf2_per_cu_data *per_cu; | |
4c2df51b DJ |
95 | }; |
96 | ||
768a979c UW |
97 | extern const struct symbol_computed_ops dwarf2_locexpr_funcs; |
98 | extern const struct symbol_computed_ops dwarf2_loclist_funcs; | |
4c2df51b | 99 | |
852483bc | 100 | #endif /* dwarf2loc.h */ |