Make context_stack_size static in buildsym.c
[deliverable/binutils-gdb.git] / gdb / buildsym.h
1 /* Build symbol tables in GDB's internal format.
2 Copyright (C) 1986-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
18
19 #if !defined (BUILDSYM_H)
20 #define BUILDSYM_H 1
21
22 struct objfile;
23 struct symbol;
24 struct addrmap;
25 struct compunit_symtab;
26 enum language;
27
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.
31
32 They originated in dbxread.c of gdb-4.2, and were split out to
33 make xcoffread.c more maintainable by sharing code.
34
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
38 this technique. */
39
40 struct block;
41 struct pending_block;
42
43 struct dynamic_prop;
44
45 #ifndef EXTERN
46 #define EXTERN extern
47 #endif
48
49 #define HASHSIZE 127 /* Size of things hashed via
50 hashname(). */
51
52 /* The list of sub-source-files within the current individual
53 compilation. Each file gets its own symtab with its own linetable
54 and associated info, but they all share one blockvector. */
55
56 struct subfile
57 {
58 struct subfile *next;
59 /* Space for this is malloc'd. */
60 char *name;
61 /* Space for this is malloc'd. */
62 struct linetable *line_vector;
63 int line_vector_length;
64 /* The "containing" compunit. */
65 struct buildsym_compunit *buildsym_compunit;
66 enum language language;
67 struct symtab *symtab;
68 };
69
70 EXTERN struct subfile *current_subfile;
71
72 /* Global variable which, when set, indicates that we are processing a
73 .o file compiled with gcc */
74
75 EXTERN unsigned char processing_gcc_compilation;
76
77 /* Count symbols as they are processed, for error messages. */
78
79 EXTERN unsigned int symnum;
80
81 /* Record the symbols defined for each context in a list. We don't
82 create a struct block for the context until we know how long to
83 make it. */
84
85 #define PENDINGSIZE 100
86
87 struct pending
88 {
89 struct pending *next;
90 int nsyms;
91 struct symbol *symbol[PENDINGSIZE];
92 };
93
94 /* Here are the three lists that symbols are put on. */
95
96 /* static at top level, and types */
97
98 EXTERN struct pending *file_symbols;
99
100 /* global functions and variables */
101
102 EXTERN struct pending *global_symbols;
103
104 /* everything local to lexical context */
105
106 EXTERN struct pending *local_symbols;
107
108 /* "using" directives local to lexical context. */
109
110 EXTERN struct using_direct *local_using_directives;
111
112 /* global "using" directives. */
113
114 EXTERN struct using_direct *global_using_directives;
115
116 /* Stack representing unclosed lexical contexts (that will become
117 blocks, eventually). */
118
119 struct context_stack
120 {
121 /* Outer locals at the time we entered */
122
123 struct pending *locals;
124
125 /* Pending using directives at the time we entered. */
126
127 struct using_direct *local_using_directives;
128
129 /* Pointer into blocklist as of entry */
130
131 struct pending_block *old_blocks;
132
133 /* Name of function, if any, defining context */
134
135 struct symbol *name;
136
137 /* Expression that computes the frame base of the lexically enclosing
138 function, if any. NULL otherwise. */
139
140 struct dynamic_prop *static_link;
141
142 /* PC where this context starts */
143
144 CORE_ADDR start_addr;
145
146 /* Temp slot for exception handling. */
147
148 CORE_ADDR end_addr;
149
150 /* For error-checking matching push/pop */
151
152 int depth;
153
154 };
155
156 EXTERN struct context_stack *context_stack;
157
158 /* Index of first unused entry in context stack. */
159
160 EXTERN int context_stack_depth;
161
162 /* Non-zero if the context stack is empty. */
163 #define outermost_context_p() (context_stack_depth == 0)
164
165 /* Nonzero if within a function (so symbols should be local, if
166 nothing says specifically). */
167
168 EXTERN int within_function;
169
170 /* The type of the record_line function. */
171 typedef void (record_line_ftype) (struct subfile *subfile, int line,
172 CORE_ADDR pc);
173
174 \f
175
176 #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile)
177
178 /* Function to invoke get the next symbol. Return the symbol name. */
179
180 EXTERN const char *(*next_symbol_text_func) (struct objfile *);
181
182 extern void add_symbol_to_list (struct symbol *symbol,
183 struct pending **listhead);
184
185 extern struct symbol *find_symbol_in_list (struct pending *list,
186 char *name, int length);
187
188 extern struct block *finish_block (struct symbol *symbol,
189 struct pending **listhead,
190 struct pending_block *old_blocks,
191 const struct dynamic_prop *static_link,
192 CORE_ADDR start,
193 CORE_ADDR end);
194
195 extern void record_block_range (struct block *,
196 CORE_ADDR start, CORE_ADDR end_inclusive);
197
198 class scoped_free_pendings
199 {
200 public:
201
202 scoped_free_pendings () = default;
203 ~scoped_free_pendings ();
204
205 DISABLE_COPY_AND_ASSIGN (scoped_free_pendings);
206 };
207
208 extern void start_subfile (const char *name);
209
210 extern void patch_subfile_names (struct subfile *subfile, const char *name);
211
212 extern void push_subfile (void);
213
214 extern char *pop_subfile (void);
215
216 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
217 int expandable,
218 int required);
219
220 extern struct compunit_symtab *
221 end_symtab_from_static_block (struct block *static_block,
222 int section, int expandable);
223
224 extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
225
226 extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
227 int section);
228
229 extern void augment_type_symtab (void);
230
231 /* Defined in stabsread.c. */
232
233 extern void scan_file_globals (struct objfile *objfile);
234
235 extern void buildsym_new_init (void);
236
237 extern void buildsym_init (void);
238
239 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
240
241 extern struct context_stack *pop_context (void);
242
243 extern record_line_ftype record_line;
244
245 extern struct compunit_symtab *start_symtab (struct objfile *objfile,
246 const char *name,
247 const char *comp_dir,
248 CORE_ADDR start_addr,
249 enum language language);
250
251 extern void restart_symtab (struct compunit_symtab *cust,
252 const char *name, CORE_ADDR start_addr);
253
254 extern int hashname (const char *name);
255
256 extern void free_pending_blocks (void);
257
258 /* Record the name of the debug format in the current pending symbol
259 table. FORMAT must be a string with a lifetime at least as long as
260 the symtab's objfile. */
261
262 extern void record_debugformat (const char *format);
263
264 /* Record the name of the debuginfo producer (usually the compiler) in
265 the current pending symbol table. PRODUCER must be a string with a
266 lifetime at least as long as the symtab's objfile. */
267
268 extern void record_producer (const char *producer);
269
270 extern void merge_symbol_lists (struct pending **srclist,
271 struct pending **targetlist);
272
273 /* Set the name of the last source file. NAME is copied by this
274 function. */
275
276 extern void set_last_source_file (const char *name);
277
278 /* Fetch the name of the last source file. */
279
280 extern const char *get_last_source_file (void);
281
282 /* Return the compunit symtab object.
283 It is only valid to call this between calls to start_symtab and the
284 end_symtab* functions. */
285
286 extern struct compunit_symtab *buildsym_compunit_symtab (void);
287
288 /* Return the macro table.
289 Initialize it if this is the first use.
290 It is only valid to call this between calls to start_symtab and the
291 end_symtab* functions. */
292
293 extern struct macro_table *get_macro_table (void);
294
295 /* Set the last source start address. Can only be used between
296 start_symtab and end_symtab* calls. */
297
298 extern void set_last_source_start_addr (CORE_ADDR addr);
299
300 /* Get the last source start address. Can only be used between
301 start_symtab and end_symtab* calls. */
302
303 extern CORE_ADDR get_last_source_start_addr ();
304
305 #undef EXTERN
306
307 #endif /* defined (BUILDSYM_H) */
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