Move processing_gcc to stabsread
[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 /* 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. */
52
53 struct subfile
54 {
55 struct subfile *next;
56 /* Space for this is malloc'd. */
57 char *name;
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;
65 };
66
67 EXTERN struct subfile *current_subfile;
68
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
71 make it. */
72
73 #define PENDINGSIZE 100
74
75 struct pending
76 {
77 struct pending *next;
78 int nsyms;
79 struct symbol *symbol[PENDINGSIZE];
80 };
81
82 /* Here are the three lists that symbols are put on. */
83
84 /* static at top level, and types */
85
86 EXTERN struct pending *file_symbols;
87
88 /* global functions and variables */
89
90 EXTERN struct pending *global_symbols;
91
92 /* everything local to lexical context */
93
94 EXTERN struct pending *local_symbols;
95
96 /* "using" directives local to lexical context. */
97
98 EXTERN struct using_direct *local_using_directives;
99
100 /* global "using" directives. */
101
102 EXTERN struct using_direct *global_using_directives;
103
104 /* Stack representing unclosed lexical contexts (that will become
105 blocks, eventually). */
106
107 struct context_stack
108 {
109 /* Outer locals at the time we entered */
110
111 struct pending *locals;
112
113 /* Pending using directives at the time we entered. */
114
115 struct using_direct *local_using_directives;
116
117 /* Pointer into blocklist as of entry */
118
119 struct pending_block *old_blocks;
120
121 /* Name of function, if any, defining context */
122
123 struct symbol *name;
124
125 /* Expression that computes the frame base of the lexically enclosing
126 function, if any. NULL otherwise. */
127
128 struct dynamic_prop *static_link;
129
130 /* PC where this context starts */
131
132 CORE_ADDR start_addr;
133
134 /* Temp slot for exception handling. */
135
136 CORE_ADDR end_addr;
137
138 /* For error-checking matching push/pop */
139
140 int depth;
141
142 };
143
144 EXTERN struct context_stack *context_stack;
145
146 /* Index of first unused entry in context stack. */
147
148 EXTERN int context_stack_depth;
149
150 /* Non-zero if the context stack is empty. */
151 #define outermost_context_p() (context_stack_depth == 0)
152
153 /* Nonzero if within a function (so symbols should be local, if
154 nothing says specifically). */
155
156 EXTERN int within_function;
157
158 /* The type of the record_line function. */
159 typedef void (record_line_ftype) (struct subfile *subfile, int line,
160 CORE_ADDR pc);
161
162 \f
163
164 extern void add_symbol_to_list (struct symbol *symbol,
165 struct pending **listhead);
166
167 extern struct symbol *find_symbol_in_list (struct pending *list,
168 char *name, int length);
169
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,
174 CORE_ADDR start,
175 CORE_ADDR end);
176
177 extern void record_block_range (struct block *,
178 CORE_ADDR start, CORE_ADDR end_inclusive);
179
180 class scoped_free_pendings
181 {
182 public:
183
184 scoped_free_pendings () = default;
185 ~scoped_free_pendings ();
186
187 DISABLE_COPY_AND_ASSIGN (scoped_free_pendings);
188 };
189
190 extern void start_subfile (const char *name);
191
192 extern void patch_subfile_names (struct subfile *subfile, const char *name);
193
194 extern void push_subfile (void);
195
196 extern char *pop_subfile (void);
197
198 extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr,
199 int expandable,
200 int required);
201
202 extern struct compunit_symtab *
203 end_symtab_from_static_block (struct block *static_block,
204 int section, int expandable);
205
206 extern struct compunit_symtab *end_symtab (CORE_ADDR end_addr, int section);
207
208 extern struct compunit_symtab *end_expandable_symtab (CORE_ADDR end_addr,
209 int section);
210
211 extern void augment_type_symtab (void);
212
213 /* Defined in stabsread.c. */
214
215 extern void scan_file_globals (struct objfile *objfile);
216
217 extern void buildsym_new_init (void);
218
219 extern void buildsym_init (void);
220
221 extern struct context_stack *push_context (int desc, CORE_ADDR valu);
222
223 extern struct context_stack *pop_context (void);
224
225 extern record_line_ftype record_line;
226
227 extern struct compunit_symtab *start_symtab (struct objfile *objfile,
228 const char *name,
229 const char *comp_dir,
230 CORE_ADDR start_addr,
231 enum language language);
232
233 extern void restart_symtab (struct compunit_symtab *cust,
234 const char *name, CORE_ADDR start_addr);
235
236 extern void free_pending_blocks (void);
237
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. */
241
242 extern void record_debugformat (const char *format);
243
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. */
247
248 extern void record_producer (const char *producer);
249
250 extern void merge_symbol_lists (struct pending **srclist,
251 struct pending **targetlist);
252
253 /* Set the name of the last source file. NAME is copied by this
254 function. */
255
256 extern void set_last_source_file (const char *name);
257
258 /* Fetch the name of the last source file. */
259
260 extern const char *get_last_source_file (void);
261
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. */
265
266 extern struct compunit_symtab *buildsym_compunit_symtab (void);
267
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. */
272
273 extern struct macro_table *get_macro_table (void);
274
275 /* Set the last source start address. Can only be used between
276 start_symtab and end_symtab* calls. */
277
278 extern void set_last_source_start_addr (CORE_ADDR addr);
279
280 /* Get the last source start address. Can only be used between
281 start_symtab and end_symtab* calls. */
282
283 extern CORE_ADDR get_last_source_start_addr ();
284
285 #undef EXTERN
286
287 #endif /* defined (BUILDSYM_H) */
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