1 /* Public partial symbol table definitions.
3 Copyright (C) 2009-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
24 #include "common/next-iterator.h"
26 struct partial_symbol;
28 /* A bcache for partial symbols. */
30 struct psymbol_bcache;
32 /* An instance of this class manages the partial symbol tables and
33 partial symbols for a given objfile. */
39 explicit psymtab_storage (struct objfile *objfile);
43 DISABLE_COPY_AND_ASSIGN (psymtab_storage);
45 /* Discard all partial symbol tables starting with "psymtabs" and
46 proceeding until "to" has been discarded. */
48 void discard_psymtabs_to (struct partial_symtab *to)
50 while (psymtabs != to)
51 discard_psymtab (psymtabs);
54 /* Discard the partial symbol table. */
56 void discard_psymtab (struct partial_symtab *pst);
59 /* Each objfile points to a linked list of partial symtabs derived from
60 this file, one partial symtab structure for each compilation unit
63 struct partial_symtab *psymtabs = nullptr;
65 /* Map addresses to the entries of PSYMTABS. It would be more efficient to
66 have a map per the whole process but ADDRMAP cannot selectively remove
67 its items during FREE_OBJFILE. This mapping is already present even for
68 PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */
70 struct addrmap *psymtabs_addrmap = nullptr;
72 /* List of freed partial symtabs, available for re-use. */
74 struct partial_symtab *free_psymtabs = nullptr;
76 /* The obstack where allocations are made. */
78 struct obstack *obstack;
80 /* A byte cache where we can stash arbitrary "chunks" of bytes that
83 struct psymbol_bcache *psymbol_cache;
85 /* Vectors of all partial symbols read in from file. The actual data
86 is stored in the objfile_obstack. */
88 std::vector<partial_symbol *> global_psymbols;
89 std::vector<partial_symbol *> static_psymbols;
93 extern struct psymbol_bcache *psymbol_bcache_init (void);
94 extern void psymbol_bcache_free (struct psymbol_bcache *);
95 extern struct bcache *psymbol_bcache_get_bcache (struct psymbol_bcache *);
97 extern const struct quick_symbol_functions psym_functions;
99 extern const struct quick_symbol_functions dwarf2_gdb_index_functions;
100 extern const struct quick_symbol_functions dwarf2_debug_names_functions;
102 /* Ensure that the partial symbols for OBJFILE have been loaded. If
103 VERBOSE is non-zero, then this will print a message when symbols
104 are loaded. This function returns a range adapter suitable for
105 iterating over the psymtabs of OBJFILE. */
107 class objfile_psymtabs;
108 extern objfile_psymtabs require_partial_symbols (struct objfile *objfile,
111 #endif /* PSYMTAB_H */