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c906108c SS |
1 | /* Build symbol tables in GDB's internal format. |
2 | Copyright 1986-1993, 1996-1999 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 2 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, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #if !defined (BUILDSYM_H) | |
21 | #define BUILDSYM_H 1 | |
22 | ||
23 | /* This module provides definitions used for creating and adding to | |
24 | the symbol table. These routines are called from various symbol- | |
25 | file-reading routines. | |
26 | ||
27 | They originated in dbxread.c of gdb-4.2, and were split out to | |
28 | make xcoffread.c more maintainable by sharing code. | |
29 | ||
30 | Variables declared in this file can be defined by #define-ing the | |
31 | name EXTERN to null. It is used to declare variables that are | |
32 | normally extern, but which get defined in a single module using | |
33 | this technique. */ | |
34 | ||
35 | #ifndef EXTERN | |
36 | #define EXTERN extern | |
37 | #endif | |
38 | ||
39 | #define HASHSIZE 127 /* Size of things hashed via | |
40 | hashname() */ | |
41 | ||
42 | /* Name of source file whose symbol data we are now processing. This | |
43 | comes from a symbol of type N_SO. */ | |
44 | ||
45 | EXTERN char *last_source_file; | |
46 | ||
47 | /* Core address of start of text of current source file. This too | |
48 | comes from the N_SO symbol. */ | |
49 | ||
50 | EXTERN CORE_ADDR last_source_start_addr; | |
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 | char *name; | |
60 | char *dirname; | |
61 | struct linetable *line_vector; | |
62 | int line_vector_length; | |
63 | enum language language; | |
64 | char *debugformat; | |
65 | }; | |
66 | ||
67 | EXTERN struct subfile *subfiles; | |
68 | ||
69 | EXTERN struct subfile *current_subfile; | |
70 | ||
71 | /* Global variable which, when set, indicates that we are processing a | |
72 | .o file compiled with gcc */ | |
73 | ||
74 | EXTERN unsigned char processing_gcc_compilation; | |
75 | ||
76 | /* When set, we are processing a .o file compiled by sun acc. This is | |
77 | misnamed; it refers to all stabs-in-elf implementations which use | |
78 | N_UNDF the way Sun does, including Solaris gcc. Hopefully all | |
79 | stabs-in-elf implementations ever invented will choose to be | |
80 | compatible. */ | |
81 | ||
82 | EXTERN unsigned char processing_acc_compilation; | |
83 | ||
84 | /* elz: added this flag to know when a block is compiled with HP | |
85 | compilers (cc, aCC). This is necessary because of the macro | |
86 | COERCE_FLOAT_TO_DOUBLE defined in tm_hppa.h, which causes a | |
87 | coercion of float to double to always occur in parameter passing | |
88 | for a function called by gdb (see the function value_arg_coerce in | |
89 | valops.c). This is necessary only if the target was compiled with | |
90 | gcc, not with HP compilers or with g++ */ | |
91 | ||
92 | EXTERN unsigned char processing_hp_compilation; | |
93 | ||
94 | /* Count symbols as they are processed, for error messages. */ | |
95 | ||
96 | EXTERN unsigned int symnum; | |
97 | ||
98 | /* Record the symbols defined for each context in a list. We don't | |
99 | create a struct block for the context until we know how long to | |
100 | make it. */ | |
101 | ||
102 | #define PENDINGSIZE 100 | |
103 | ||
104 | struct pending | |
105 | { | |
106 | struct pending *next; | |
107 | int nsyms; | |
108 | struct symbol *symbol[PENDINGSIZE]; | |
109 | }; | |
110 | ||
111 | /* Here are the three lists that symbols are put on. */ | |
112 | ||
113 | /* static at top level, and types */ | |
114 | ||
115 | EXTERN struct pending *file_symbols; | |
116 | ||
117 | /* global functions and variables */ | |
118 | ||
119 | EXTERN struct pending *global_symbols; | |
120 | ||
121 | /* everything local to lexical context */ | |
122 | ||
123 | EXTERN struct pending *local_symbols; | |
124 | ||
125 | /* func params local to lexical context */ | |
126 | ||
127 | EXTERN struct pending *param_symbols; | |
128 | ||
129 | /* Stack representing unclosed lexical contexts (that will become | |
130 | blocks, eventually). */ | |
131 | ||
132 | struct context_stack | |
133 | { | |
134 | /* Outer locals at the time we entered */ | |
135 | ||
136 | struct pending *locals; | |
137 | ||
138 | /* Pending func params at the time we entered */ | |
139 | ||
140 | struct pending *params; | |
141 | ||
142 | /* Pointer into blocklist as of entry */ | |
143 | ||
144 | struct pending_block *old_blocks; | |
145 | ||
146 | /* Name of function, if any, defining context */ | |
147 | ||
148 | struct symbol *name; | |
149 | ||
150 | /* PC where this context starts */ | |
151 | ||
152 | CORE_ADDR start_addr; | |
153 | ||
154 | /* Temp slot for exception handling. */ | |
155 | ||
156 | CORE_ADDR end_addr; | |
157 | ||
158 | /* For error-checking matching push/pop */ | |
159 | ||
160 | int depth; | |
161 | ||
162 | }; | |
163 | ||
164 | EXTERN struct context_stack *context_stack; | |
165 | ||
166 | /* Index of first unused entry in context stack. */ | |
167 | ||
168 | EXTERN int context_stack_depth; | |
169 | ||
170 | /* Currently allocated size of context stack. */ | |
171 | ||
172 | EXTERN int context_stack_size; | |
173 | ||
174 | /* Macro "function" for popping contexts from the stack. Pushing is | |
175 | done by a real function, push_context. This returns a pointer to a | |
176 | struct context_stack. */ | |
177 | ||
178 | #define pop_context() (&context_stack[--context_stack_depth]); | |
179 | ||
180 | /* Nonzero if within a function (so symbols should be local, if | |
181 | nothing says specifically). */ | |
182 | ||
183 | EXTERN int within_function; | |
184 | ||
185 | /* List of blocks already made (lexical contexts already closed). | |
186 | This is used at the end to make the blockvector. */ | |
187 | ||
188 | struct pending_block | |
189 | { | |
190 | struct pending_block *next; | |
191 | struct block *block; | |
192 | }; | |
193 | ||
194 | /* Pointer to the head of a linked list of symbol blocks which have | |
195 | already been finalized (lexical contexts already closed) and which | |
196 | are just waiting to be built into a blockvector when finalizing the | |
197 | associated symtab. */ | |
198 | ||
199 | EXTERN struct pending_block *pending_blocks; | |
200 | \f | |
201 | ||
202 | struct subfile_stack | |
203 | { | |
204 | struct subfile_stack *next; | |
205 | char *name; | |
206 | }; | |
207 | ||
208 | EXTERN struct subfile_stack *subfile_stack; | |
209 | ||
210 | #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) | |
211 | ||
212 | /* Function to invoke get the next symbol. Return the symbol name. */ | |
213 | ||
214 | EXTERN char *(*next_symbol_text_func) (struct objfile *); | |
215 | ||
216 | /* Vector of types defined so far, indexed by their type numbers. | |
217 | Used for both stabs and coff. (In newer sun systems, dbx uses a | |
218 | pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)". | |
219 | Then these numbers must be translated through the type_translations | |
220 | hash table to get the index into the type vector.) */ | |
221 | ||
222 | EXTERN struct type **type_vector; | |
223 | ||
224 | /* Number of elements allocated for type_vector currently. */ | |
225 | ||
226 | EXTERN int type_vector_length; | |
227 | ||
228 | /* Initial size of type vector. Is realloc'd larger if needed, and | |
229 | realloc'd down to the size actually used, when completed. */ | |
230 | ||
231 | #define INITIAL_TYPE_VECTOR_LENGTH 160 | |
232 | ||
233 | extern void add_symbol_to_list (struct symbol *symbol, | |
234 | struct pending **listhead); | |
235 | ||
236 | extern struct symbol *find_symbol_in_list (struct pending *list, | |
237 | char *name, int length); | |
238 | ||
239 | extern void finish_block (struct symbol *symbol, | |
240 | struct pending **listhead, | |
241 | struct pending_block *old_blocks, | |
242 | CORE_ADDR start, CORE_ADDR end, | |
243 | struct objfile *objfile); | |
244 | ||
245 | extern void really_free_pendings (int foo); | |
246 | ||
247 | extern void start_subfile (char *name, char *dirname); | |
248 | ||
249 | extern void patch_subfile_names (struct subfile *subfile, char *name); | |
250 | ||
251 | extern void push_subfile (void); | |
252 | ||
253 | extern char *pop_subfile (void); | |
254 | ||
255 | extern struct symtab *end_symtab (CORE_ADDR end_addr, | |
256 | struct objfile *objfile, int section); | |
257 | ||
258 | /* Defined in stabsread.c. */ | |
259 | ||
260 | extern void scan_file_globals (struct objfile *objfile); | |
261 | ||
262 | extern void buildsym_new_init (void); | |
263 | ||
264 | extern void buildsym_init (void); | |
265 | ||
266 | extern struct context_stack *push_context (int desc, CORE_ADDR valu); | |
267 | ||
268 | extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc); | |
269 | ||
270 | extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr); | |
271 | ||
272 | extern int hashname (char *name); | |
273 | ||
274 | extern void free_pending_blocks (void); | |
275 | ||
276 | /* FIXME: Note that this is used only in buildsym.c and dstread.c, | |
277 | which should be fixed to not need direct access to | |
278 | make_blockvector. */ | |
279 | ||
280 | extern struct blockvector *make_blockvector (struct objfile *objfile); | |
281 | ||
282 | /* FIXME: Note that this is used only in buildsym.c and dstread.c, | |
283 | which should be fixed to not need direct access to | |
284 | record_pending_block. */ | |
285 | ||
286 | extern void record_pending_block (struct objfile *objfile, | |
287 | struct block *block, | |
288 | struct pending_block *opblock); | |
289 | ||
290 | extern void record_debugformat (char *format); | |
291 | ||
292 | extern void merge_symbol_lists (struct pending **srclist, | |
293 | struct pending **targetlist); | |
294 | ||
295 | #undef EXTERN | |
296 | ||
297 | #endif /* defined (BUILDSYM_H) */ |