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ccefe4c4 TT |
1 | /* Public partial symbol table definitions. |
2 | ||
42a4f53d | 3 | Copyright (C) 2009-2019 Free Software Foundation, Inc. |
ccefe4c4 TT |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #ifndef PSYMTAB_H | |
21 | #define PSYMTAB_H | |
22 | ||
a9342b62 | 23 | #include "gdb_obstack.h" |
44b13c5a | 24 | #include "symfile.h" |
b22a7c6a | 25 | #include "common/next-iterator.h" |
44b13c5a | 26 | |
d320c2b5 TT |
27 | struct partial_symbol; |
28 | ||
710e1a31 SW |
29 | /* A bcache for partial symbols. */ |
30 | ||
31 | struct psymbol_bcache; | |
32 | ||
d320c2b5 TT |
33 | /* An instance of this class manages the partial symbol tables and |
34 | partial symbols for a given objfile. */ | |
cbd70537 | 35 | |
d320c2b5 TT |
36 | class psymtab_storage |
37 | { | |
38 | public: | |
ccefe4c4 | 39 | |
d320c2b5 | 40 | explicit psymtab_storage (struct objfile *objfile); |
9291a0cd | 41 | |
d320c2b5 | 42 | ~psymtab_storage (); |
b22a7c6a | 43 | |
d320c2b5 TT |
44 | DISABLE_COPY_AND_ASSIGN (psymtab_storage); |
45 | ||
46 | /* Discard all partial symbol tables starting with "psymtabs" and | |
47 | proceeding until "to" has been discarded. */ | |
b22a7c6a | 48 | |
d320c2b5 | 49 | void discard_psymtabs_to (struct partial_symtab *to) |
b22a7c6a | 50 | { |
d320c2b5 TT |
51 | while (psymtabs != to) |
52 | discard_psymtab (psymtabs); | |
b22a7c6a | 53 | } |
d320c2b5 TT |
54 | |
55 | /* Discard the partial symbol table. */ | |
56 | ||
57 | void discard_psymtab (struct partial_symtab *pst); | |
58 | ||
5923a04c TT |
59 | /* Return the obstack that is used for storage by this object. */ |
60 | ||
61 | struct obstack *obstack () | |
62 | { | |
63 | return m_obstack; | |
64 | } | |
65 | ||
a9342b62 TT |
66 | /* Allocate storage for the "dependencies" field of a psymtab. |
67 | NUMBER says how many dependencies there are. */ | |
68 | ||
69 | struct partial_symtab **allocate_dependencies (int number) | |
70 | { | |
71 | return OBSTACK_CALLOC (obstack (), number, struct partial_symtab *); | |
72 | } | |
73 | ||
b596a3c7 TT |
74 | /* Allocate a new psymtab on the psymtab obstack. The new psymtab |
75 | will be linked in to the "psymtabs" list, but otherwise all other | |
76 | fields will be zero. */ | |
77 | ||
78 | struct partial_symtab *allocate_psymtab (); | |
79 | ||
d320c2b5 TT |
80 | |
81 | /* Each objfile points to a linked list of partial symtabs derived from | |
82 | this file, one partial symtab structure for each compilation unit | |
83 | (source file). */ | |
84 | ||
85 | struct partial_symtab *psymtabs = nullptr; | |
86 | ||
87 | /* Map addresses to the entries of PSYMTABS. It would be more efficient to | |
88 | have a map per the whole process but ADDRMAP cannot selectively remove | |
89 | its items during FREE_OBJFILE. This mapping is already present even for | |
90 | PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */ | |
91 | ||
92 | struct addrmap *psymtabs_addrmap = nullptr; | |
93 | ||
d320c2b5 TT |
94 | /* A byte cache where we can stash arbitrary "chunks" of bytes that |
95 | will not change. */ | |
96 | ||
97 | struct psymbol_bcache *psymbol_cache; | |
98 | ||
99 | /* Vectors of all partial symbols read in from file. The actual data | |
100 | is stored in the objfile_obstack. */ | |
101 | ||
102 | std::vector<partial_symbol *> global_psymbols; | |
103 | std::vector<partial_symbol *> static_psymbols; | |
5923a04c TT |
104 | |
105 | private: | |
106 | ||
b596a3c7 TT |
107 | /* List of freed partial symtabs, available for re-use. */ |
108 | ||
109 | struct partial_symtab *free_psymtabs = nullptr; | |
110 | ||
5923a04c TT |
111 | /* The obstack where allocations are made. */ |
112 | ||
113 | struct obstack *m_obstack; | |
b22a7c6a TT |
114 | }; |
115 | ||
d320c2b5 TT |
116 | |
117 | extern struct psymbol_bcache *psymbol_bcache_init (void); | |
118 | extern void psymbol_bcache_free (struct psymbol_bcache *); | |
119 | extern struct bcache *psymbol_bcache_get_bcache (struct psymbol_bcache *); | |
120 | ||
121 | extern const struct quick_symbol_functions psym_functions; | |
122 | ||
123 | extern const struct quick_symbol_functions dwarf2_gdb_index_functions; | |
124 | extern const struct quick_symbol_functions dwarf2_debug_names_functions; | |
125 | ||
b11896a5 TT |
126 | /* Ensure that the partial symbols for OBJFILE have been loaded. If |
127 | VERBOSE is non-zero, then this will print a message when symbols | |
b22a7c6a TT |
128 | are loaded. This function returns a range adapter suitable for |
129 | iterating over the psymtabs of OBJFILE. */ | |
b11896a5 | 130 | |
d320c2b5 | 131 | class objfile_psymtabs; |
b22a7c6a TT |
132 | extern objfile_psymtabs require_partial_symbols (struct objfile *objfile, |
133 | int verbose); | |
b11896a5 | 134 | |
ccefe4c4 | 135 | #endif /* PSYMTAB_H */ |