1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-2018 Free Software Foundation, Inc.
4 This file is part of GDB.
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 3 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #if !defined (BUILDSYM_H)
25 struct compunit_symtab;
28 /* This module provides definitions used for creating and adding to
29 the symbol table. These routines are called from various symbol-
30 file-reading routines.
32 They originated in dbxread.c of gdb-4.2, and were split out to
33 make xcoffread.c more maintainable by sharing code.
35 Variables declared in this file can be defined by #define-ing the
36 name EXTERN to null. It is used to declare variables that are
37 normally extern, but which get defined in a single module using
49 /* The list of sub-source-files within the current individual
50 compilation. Each file gets its own symtab with its own linetable
51 and associated info, but they all share one blockvector. */
56 /* Space for this is malloc'd. */
58 /* Space for this is malloc'd. */
59 struct linetable *line_vector;
60 int line_vector_length;
61 /* The "containing" compunit. */
62 struct buildsym_compunit *buildsym_compunit;
63 enum language language;
64 struct symtab *symtab;
67 EXTERN struct subfile *current_subfile;
69 /* Record the symbols defined for each context in a list. We don't
70 create a struct block for the context until we know how long to
73 #define PENDINGSIZE 100
79 struct symbol *symbol[PENDINGSIZE];
82 /* Here are the three lists that symbols are put on. */
84 /* static at top level, and types */
86 EXTERN struct pending *file_symbols;
88 /* global functions and variables */
90 EXTERN struct pending *global_symbols;
92 /* everything local to lexical context */
94 EXTERN struct pending *local_symbols;
96 /* "using" directives local to lexical context. */
98 EXTERN struct using_direct *local_using_directives;
100 /* global "using" directives. */
102 EXTERN struct using_direct *global_using_directives;
104 /* Stack representing unclosed lexical contexts (that will become
105 blocks, eventually). */
109 /* Outer locals at the time we entered */
111 struct pending *locals;
113 /* Pending using directives at the time we entered. */
115 struct using_direct *local_using_directives;
117 /* Pointer into blocklist as of entry */
119 struct pending_block *old_blocks;
121 /* Name of function, if any, defining context */
125 /* Expression that computes the frame base of the lexically enclosing
126 function, if any. NULL otherwise. */
128 struct dynamic_prop *static_link;
130 /* PC where this context starts */
132 CORE_ADDR start_addr;
134 /* Temp slot for exception handling. */
138 /* For error-checking matching push/pop */
144 EXTERN struct context_stack *context_stack;
146 /* Index of first unused entry in context stack. */
148 EXTERN int context_stack_depth;
150 /* Non-zero if the context stack is empty. */
151 #define outermost_context_p() (context_stack_depth == 0)
153 /* Nonzero if within a function (so symbols should be local, if
154 nothing says specifically). */
156 EXTERN int within_function;
158 /* The type of the record_line function. */
159 typedef void (record_line_ftype) (struct subfile *subfile, int line,
164 extern void add_symbol_to_list (struct symbol *symbol,
165 struct pending **listhead);
167 extern struct symbol *find_symbol_in_list (struct pending *list,
168 char *name, int length);
170 extern struct block *finish_block (struct symbol *symbol,
171 struct pending **listhead,
172 struct pending_block *old_blocks,
173 const struct dynamic_prop *static_link,
177 extern void record_block_range (struct block *,
178 CORE_ADDR start, CORE_ADDR end_inclusive);
180 class scoped_free_pendings
184 scoped_free_pendings () = default;
185 ~scoped_free_pendings ();
187 DISABLE_COPY_AND_ASSIGN (scoped_free_pendings);
190 extern void start_subfile (const char *name);
192 extern void patch_subfile_names (struct subfile *subfile, const char *name);
194 extern void push_subfile (void);
196 extern char *pop_subfile (void);
198 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
202 extern struct compunit_symtab *
203 end_symtab_from_static_block (struct block *static_block,
204 int section, int expandable);
206 extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
208 extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
211 extern void augment_type_symtab (void);
213 /* Defined in stabsread.c. */
215 extern void scan_file_globals (struct objfile *objfile);
217 extern void buildsym_new_init (void);
219 extern void buildsym_init (void);
221 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
223 extern struct context_stack *pop_context (void);
225 extern record_line_ftype record_line;
227 extern struct compunit_symtab *start_symtab (struct objfile *objfile,
229 const char *comp_dir,
230 CORE_ADDR start_addr,
231 enum language language);
233 extern void restart_symtab (struct compunit_symtab *cust,
234 const char *name, CORE_ADDR start_addr);
236 extern void free_pending_blocks (void);
238 /* Record the name of the debug format in the current pending symbol
239 table. FORMAT must be a string with a lifetime at least as long as
240 the symtab's objfile. */
242 extern void record_debugformat (const char *format);
244 /* Record the name of the debuginfo producer (usually the compiler) in
245 the current pending symbol table. PRODUCER must be a string with a
246 lifetime at least as long as the symtab's objfile. */
248 extern void record_producer (const char *producer);
250 extern void merge_symbol_lists (struct pending **srclist,
251 struct pending **targetlist);
253 /* Set the name of the last source file. NAME is copied by this
256 extern void set_last_source_file (const char *name);
258 /* Fetch the name of the last source file. */
260 extern const char *get_last_source_file (void);
262 /* Return the compunit symtab object.
263 It is only valid to call this between calls to start_symtab and the
264 end_symtab* functions. */
266 extern struct compunit_symtab *buildsym_compunit_symtab (void);
268 /* Return the macro table.
269 Initialize it if this is the first use.
270 It is only valid to call this between calls to start_symtab and the
271 end_symtab* functions. */
273 extern struct macro_table *get_macro_table (void);
275 /* Set the last source start address. Can only be used between
276 start_symtab and end_symtab* calls. */
278 extern void set_last_source_start_addr (CORE_ADDR addr);
280 /* Get the last source start address. Can only be used between
281 start_symtab and end_symtab* calls. */
283 extern CORE_ADDR get_last_source_start_addr ();
287 #endif /* defined (BUILDSYM_H) */