Commit | Line | Data |
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c906108c | 1 | /* Symbol table lookup for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008 |
083ae935 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
24 | #include "gdbtypes.h" | |
25 | #include "gdbcore.h" | |
26 | #include "frame.h" | |
27 | #include "target.h" | |
28 | #include "value.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "call-cmds.h" | |
88987551 | 33 | #include "gdb_regex.h" |
c906108c SS |
34 | #include "expression.h" |
35 | #include "language.h" | |
36 | #include "demangle.h" | |
37 | #include "inferior.h" | |
c5f0f3d0 | 38 | #include "linespec.h" |
0378c332 | 39 | #include "source.h" |
a7fdf62f | 40 | #include "filenames.h" /* for FILENAME_CMP */ |
1bae87b9 | 41 | #include "objc-lang.h" |
1f8173e6 | 42 | #include "ada-lang.h" |
cd6c7346 | 43 | #include "p-lang.h" |
ff013f42 | 44 | #include "addrmap.h" |
c906108c | 45 | |
2de7ced7 DJ |
46 | #include "hashtab.h" |
47 | ||
04ea0df1 | 48 | #include "gdb_obstack.h" |
fe898f56 | 49 | #include "block.h" |
de4f826b | 50 | #include "dictionary.h" |
c906108c SS |
51 | |
52 | #include <sys/types.h> | |
53 | #include <fcntl.h> | |
54 | #include "gdb_string.h" | |
55 | #include "gdb_stat.h" | |
56 | #include <ctype.h> | |
015a42b4 | 57 | #include "cp-abi.h" |
ea53e89f | 58 | #include "observer.h" |
94277a38 | 59 | #include "gdb_assert.h" |
3a40aaa0 | 60 | #include "solist.h" |
c906108c | 61 | |
c906108c SS |
62 | /* Prototypes for local functions */ |
63 | ||
a14ed312 | 64 | static void completion_list_add_name (char *, char *, int, char *, char *); |
c906108c | 65 | |
a14ed312 | 66 | static void rbreak_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | static void types_info (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void functions_info (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void variables_info (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void sources_info (char *, int); |
c906108c | 75 | |
d092d1a2 | 76 | static void output_source_filename (const char *, int *); |
c906108c | 77 | |
a14ed312 | 78 | static int find_line_common (struct linetable *, int, int *); |
c906108c | 79 | |
50641945 FN |
80 | /* This one is used by linespec.c */ |
81 | ||
82 | char *operator_chars (char *p, char **end); | |
83 | ||
3121eff0 | 84 | static struct symbol *lookup_symbol_aux (const char *name, |
5ad1c190 | 85 | const char *linkage_name, |
3121eff0 | 86 | const struct block *block, |
176620f1 | 87 | const domain_enum domain, |
53c5240f | 88 | enum language language, |
3121eff0 DJ |
89 | int *is_a_field_of_this, |
90 | struct symtab **symtab); | |
fba7f19c | 91 | |
e4051eeb DC |
92 | static |
93 | struct symbol *lookup_symbol_aux_local (const char *name, | |
5ad1c190 | 94 | const char *linkage_name, |
e4051eeb | 95 | const struct block *block, |
176620f1 | 96 | const domain_enum domain, |
89a9d1b1 | 97 | struct symtab **symtab); |
8155455b DC |
98 | |
99 | static | |
100 | struct symbol *lookup_symbol_aux_symtabs (int block_index, | |
101 | const char *name, | |
5ad1c190 | 102 | const char *linkage_name, |
176620f1 | 103 | const domain_enum domain, |
8155455b DC |
104 | struct symtab **symtab); |
105 | ||
106 | static | |
107 | struct symbol *lookup_symbol_aux_psymtabs (int block_index, | |
108 | const char *name, | |
5ad1c190 | 109 | const char *linkage_name, |
176620f1 | 110 | const domain_enum domain, |
8155455b | 111 | struct symtab **symtab); |
fba7f19c | 112 | |
a14ed312 | 113 | static void fixup_section (struct general_symbol_info *, struct objfile *); |
c906108c | 114 | |
a14ed312 | 115 | static int file_matches (char *, char **, int); |
c906108c | 116 | |
176620f1 | 117 | static void print_symbol_info (domain_enum, |
a14ed312 | 118 | struct symtab *, struct symbol *, int, char *); |
c906108c | 119 | |
a14ed312 | 120 | static void print_msymbol_info (struct minimal_symbol *); |
c906108c | 121 | |
176620f1 | 122 | static void symtab_symbol_info (char *, domain_enum, int); |
c906108c | 123 | |
a14ed312 | 124 | void _initialize_symtab (void); |
c906108c SS |
125 | |
126 | /* */ | |
127 | ||
717d2f5a JB |
128 | /* Allow the user to configure the debugger behavior with respect |
129 | to multiple-choice menus when more than one symbol matches during | |
130 | a symbol lookup. */ | |
131 | ||
7fc830e2 MK |
132 | const char multiple_symbols_ask[] = "ask"; |
133 | const char multiple_symbols_all[] = "all"; | |
134 | const char multiple_symbols_cancel[] = "cancel"; | |
717d2f5a JB |
135 | static const char *multiple_symbols_modes[] = |
136 | { | |
137 | multiple_symbols_ask, | |
138 | multiple_symbols_all, | |
139 | multiple_symbols_cancel, | |
140 | NULL | |
141 | }; | |
142 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
143 | ||
144 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
145 | ||
146 | const char * | |
147 | multiple_symbols_select_mode (void) | |
148 | { | |
149 | return multiple_symbols_mode; | |
150 | } | |
151 | ||
c906108c SS |
152 | /* The single non-language-specific builtin type */ |
153 | struct type *builtin_type_error; | |
154 | ||
155 | /* Block in which the most recently searched-for symbol was found. | |
156 | Might be better to make this a parameter to lookup_symbol and | |
157 | value_of_this. */ | |
158 | ||
159 | const struct block *block_found; | |
160 | ||
c906108c SS |
161 | /* Check for a symtab of a specific name; first in symtabs, then in |
162 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
163 | in the symtab filename will also work. */ | |
164 | ||
1b15f1fa TT |
165 | struct symtab * |
166 | lookup_symtab (const char *name) | |
c906108c | 167 | { |
52f0bd74 AC |
168 | struct symtab *s; |
169 | struct partial_symtab *ps; | |
170 | struct objfile *objfile; | |
58d370e0 | 171 | char *real_path = NULL; |
f079a2e5 | 172 | char *full_path = NULL; |
58d370e0 TT |
173 | |
174 | /* Here we are interested in canonicalizing an absolute path, not | |
175 | absolutizing a relative path. */ | |
176 | if (IS_ABSOLUTE_PATH (name)) | |
f079a2e5 JB |
177 | { |
178 | full_path = xfullpath (name); | |
179 | make_cleanup (xfree, full_path); | |
180 | real_path = gdb_realpath (name); | |
181 | make_cleanup (xfree, real_path); | |
182 | } | |
c906108c | 183 | |
c5aa993b | 184 | got_symtab: |
c906108c SS |
185 | |
186 | /* First, search for an exact match */ | |
187 | ||
188 | ALL_SYMTABS (objfile, s) | |
58d370e0 | 189 | { |
a7fdf62f | 190 | if (FILENAME_CMP (name, s->filename) == 0) |
58d370e0 | 191 | { |
58d370e0 TT |
192 | return s; |
193 | } | |
f079a2e5 | 194 | |
58d370e0 TT |
195 | /* If the user gave us an absolute path, try to find the file in |
196 | this symtab and use its absolute path. */ | |
f079a2e5 JB |
197 | |
198 | if (full_path != NULL) | |
199 | { | |
09bcec80 BR |
200 | const char *fp = symtab_to_fullname (s); |
201 | if (fp != NULL && FILENAME_CMP (full_path, fp) == 0) | |
202 | { | |
203 | return s; | |
204 | } | |
f079a2e5 JB |
205 | } |
206 | ||
58d370e0 TT |
207 | if (real_path != NULL) |
208 | { | |
09bcec80 BR |
209 | char *fullname = symtab_to_fullname (s); |
210 | if (fullname != NULL) | |
211 | { | |
212 | char *rp = gdb_realpath (fullname); | |
213 | make_cleanup (xfree, rp); | |
214 | if (FILENAME_CMP (real_path, rp) == 0) | |
215 | { | |
216 | return s; | |
217 | } | |
218 | } | |
58d370e0 TT |
219 | } |
220 | } | |
221 | ||
c906108c SS |
222 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
223 | ||
caadab2c | 224 | if (lbasename (name) == name) |
c906108c | 225 | ALL_SYMTABS (objfile, s) |
c5aa993b | 226 | { |
31889e00 | 227 | if (FILENAME_CMP (lbasename (s->filename), name) == 0) |
c5aa993b JM |
228 | return s; |
229 | } | |
c906108c SS |
230 | |
231 | /* Same search rules as above apply here, but now we look thru the | |
232 | psymtabs. */ | |
233 | ||
234 | ps = lookup_partial_symtab (name); | |
235 | if (!ps) | |
236 | return (NULL); | |
237 | ||
c5aa993b | 238 | if (ps->readin) |
8a3fe4f8 | 239 | error (_("Internal: readin %s pst for `%s' found when no symtab found."), |
c5aa993b | 240 | ps->filename, name); |
c906108c SS |
241 | |
242 | s = PSYMTAB_TO_SYMTAB (ps); | |
243 | ||
244 | if (s) | |
245 | return s; | |
246 | ||
247 | /* At this point, we have located the psymtab for this file, but | |
248 | the conversion to a symtab has failed. This usually happens | |
249 | when we are looking up an include file. In this case, | |
250 | PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has | |
251 | been created. So, we need to run through the symtabs again in | |
252 | order to find the file. | |
253 | XXX - This is a crock, and should be fixed inside of the the | |
254 | symbol parsing routines. */ | |
255 | goto got_symtab; | |
256 | } | |
257 | ||
c906108c SS |
258 | /* Lookup the partial symbol table of a source file named NAME. |
259 | *If* there is no '/' in the name, a match after a '/' | |
260 | in the psymtab filename will also work. */ | |
261 | ||
262 | struct partial_symtab * | |
1f8cc6db | 263 | lookup_partial_symtab (const char *name) |
c906108c | 264 | { |
52f0bd74 AC |
265 | struct partial_symtab *pst; |
266 | struct objfile *objfile; | |
f079a2e5 | 267 | char *full_path = NULL; |
58d370e0 TT |
268 | char *real_path = NULL; |
269 | ||
270 | /* Here we are interested in canonicalizing an absolute path, not | |
271 | absolutizing a relative path. */ | |
272 | if (IS_ABSOLUTE_PATH (name)) | |
f079a2e5 JB |
273 | { |
274 | full_path = xfullpath (name); | |
275 | make_cleanup (xfree, full_path); | |
276 | real_path = gdb_realpath (name); | |
277 | make_cleanup (xfree, real_path); | |
278 | } | |
c5aa993b | 279 | |
c906108c | 280 | ALL_PSYMTABS (objfile, pst) |
c5aa993b | 281 | { |
a7fdf62f | 282 | if (FILENAME_CMP (name, pst->filename) == 0) |
c5aa993b JM |
283 | { |
284 | return (pst); | |
285 | } | |
f079a2e5 | 286 | |
58d370e0 TT |
287 | /* If the user gave us an absolute path, try to find the file in |
288 | this symtab and use its absolute path. */ | |
f079a2e5 | 289 | if (full_path != NULL) |
58d370e0 | 290 | { |
d9c8471e | 291 | psymtab_to_fullname (pst); |
58d370e0 | 292 | if (pst->fullname != NULL |
f079a2e5 | 293 | && FILENAME_CMP (full_path, pst->fullname) == 0) |
58d370e0 | 294 | { |
58d370e0 TT |
295 | return pst; |
296 | } | |
297 | } | |
c906108c | 298 | |
f079a2e5 JB |
299 | if (real_path != NULL) |
300 | { | |
301 | char *rp = NULL; | |
d9c8471e | 302 | psymtab_to_fullname (pst); |
f079a2e5 JB |
303 | if (pst->fullname != NULL) |
304 | { | |
305 | rp = gdb_realpath (pst->fullname); | |
306 | make_cleanup (xfree, rp); | |
307 | } | |
308 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
309 | { | |
310 | return pst; | |
311 | } | |
312 | } | |
313 | } | |
58d370e0 | 314 | |
c906108c SS |
315 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
316 | ||
caadab2c | 317 | if (lbasename (name) == name) |
c906108c | 318 | ALL_PSYMTABS (objfile, pst) |
c5aa993b | 319 | { |
31889e00 | 320 | if (FILENAME_CMP (lbasename (pst->filename), name) == 0) |
c5aa993b JM |
321 | return (pst); |
322 | } | |
c906108c SS |
323 | |
324 | return (NULL); | |
325 | } | |
326 | \f | |
327 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
328 | full method name, which consist of the class name (from T), the unadorned | |
329 | method name from METHOD_ID, and the signature for the specific overload, | |
330 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ | |
331 | ||
332 | char * | |
fba45db2 | 333 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
334 | { |
335 | int mangled_name_len; | |
336 | char *mangled_name; | |
337 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
338 | struct fn_field *method = &f[signature_id]; | |
339 | char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); | |
340 | char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); | |
341 | char *newname = type_name_no_tag (type); | |
342 | ||
343 | /* Does the form of physname indicate that it is the full mangled name | |
344 | of a constructor (not just the args)? */ | |
345 | int is_full_physname_constructor; | |
346 | ||
347 | int is_constructor; | |
015a42b4 | 348 | int is_destructor = is_destructor_name (physname); |
c906108c SS |
349 | /* Need a new type prefix. */ |
350 | char *const_prefix = method->is_const ? "C" : ""; | |
351 | char *volatile_prefix = method->is_volatile ? "V" : ""; | |
352 | char buf[20]; | |
353 | int len = (newname == NULL ? 0 : strlen (newname)); | |
354 | ||
43630227 PS |
355 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
356 | or an operator name. */ | |
357 | if ((physname[0] == '_' && physname[1] == 'Z') | |
358 | || is_operator_name (field_name)) | |
235d1e03 EZ |
359 | return xstrdup (physname); |
360 | ||
015a42b4 | 361 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c SS |
362 | |
363 | is_constructor = | |
6314a349 | 364 | is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0); |
c906108c SS |
365 | |
366 | if (!is_destructor) | |
c5aa993b | 367 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
c906108c SS |
368 | |
369 | if (is_destructor || is_full_physname_constructor) | |
370 | { | |
c5aa993b JM |
371 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
372 | strcpy (mangled_name, physname); | |
c906108c SS |
373 | return mangled_name; |
374 | } | |
375 | ||
376 | if (len == 0) | |
377 | { | |
378 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); | |
379 | } | |
380 | else if (physname[0] == 't' || physname[0] == 'Q') | |
381 | { | |
382 | /* The physname for template and qualified methods already includes | |
c5aa993b | 383 | the class name. */ |
c906108c SS |
384 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
385 | newname = NULL; | |
386 | len = 0; | |
387 | } | |
388 | else | |
389 | { | |
390 | sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); | |
391 | } | |
392 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 393 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 394 | |
c906108c | 395 | { |
c5aa993b | 396 | mangled_name = (char *) xmalloc (mangled_name_len); |
c906108c SS |
397 | if (is_constructor) |
398 | mangled_name[0] = '\0'; | |
399 | else | |
400 | strcpy (mangled_name, field_name); | |
401 | } | |
402 | strcat (mangled_name, buf); | |
403 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
404 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c5aa993b | 405 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
406 | if (newname != NULL) |
407 | strcat (mangled_name, newname); | |
408 | ||
409 | strcat (mangled_name, physname); | |
410 | return (mangled_name); | |
411 | } | |
12af6855 JB |
412 | |
413 | \f | |
89aad1f9 EZ |
414 | /* Initialize the language dependent portion of a symbol |
415 | depending upon the language for the symbol. */ | |
416 | void | |
417 | symbol_init_language_specific (struct general_symbol_info *gsymbol, | |
418 | enum language language) | |
419 | { | |
420 | gsymbol->language = language; | |
421 | if (gsymbol->language == language_cplus | |
5784d15e AF |
422 | || gsymbol->language == language_java |
423 | || gsymbol->language == language_objc) | |
89aad1f9 EZ |
424 | { |
425 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
426 | } | |
89aad1f9 EZ |
427 | else |
428 | { | |
429 | memset (&gsymbol->language_specific, 0, | |
430 | sizeof (gsymbol->language_specific)); | |
431 | } | |
432 | } | |
433 | ||
2de7ced7 DJ |
434 | /* Functions to initialize a symbol's mangled name. */ |
435 | ||
436 | /* Create the hash table used for demangled names. Each hash entry is | |
437 | a pair of strings; one for the mangled name and one for the demangled | |
438 | name. The entry is hashed via just the mangled name. */ | |
439 | ||
440 | static void | |
441 | create_demangled_names_hash (struct objfile *objfile) | |
442 | { | |
443 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
444 | The hash table code will round this up to the next prime number. | |
445 | Choosing a much larger table size wastes memory, and saves only about | |
446 | 1% in symbol reading. */ | |
447 | ||
aa2ee5f6 | 448 | objfile->demangled_names_hash = htab_create_alloc |
2de7ced7 | 449 | (256, htab_hash_string, (int (*) (const void *, const void *)) streq, |
aa2ee5f6 | 450 | NULL, xcalloc, xfree); |
2de7ced7 | 451 | } |
12af6855 | 452 | |
2de7ced7 | 453 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
454 | language of that symbol. If the language is set to language_auto, |
455 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
456 | then set the language appropriately. The returned name is allocated |
457 | by the demangler and should be xfree'd. */ | |
12af6855 | 458 | |
2de7ced7 DJ |
459 | static char * |
460 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
461 | const char *mangled) | |
12af6855 | 462 | { |
12af6855 JB |
463 | char *demangled = NULL; |
464 | ||
465 | if (gsymbol->language == language_unknown) | |
466 | gsymbol->language = language_auto; | |
1bae87b9 AF |
467 | |
468 | if (gsymbol->language == language_objc | |
469 | || gsymbol->language == language_auto) | |
470 | { | |
471 | demangled = | |
472 | objc_demangle (mangled, 0); | |
473 | if (demangled != NULL) | |
474 | { | |
475 | gsymbol->language = language_objc; | |
476 | return demangled; | |
477 | } | |
478 | } | |
12af6855 JB |
479 | if (gsymbol->language == language_cplus |
480 | || gsymbol->language == language_auto) | |
481 | { | |
482 | demangled = | |
2de7ced7 | 483 | cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI); |
12af6855 | 484 | if (demangled != NULL) |
2de7ced7 DJ |
485 | { |
486 | gsymbol->language = language_cplus; | |
487 | return demangled; | |
488 | } | |
12af6855 JB |
489 | } |
490 | if (gsymbol->language == language_java) | |
491 | { | |
492 | demangled = | |
2de7ced7 | 493 | cplus_demangle (mangled, |
12af6855 JB |
494 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); |
495 | if (demangled != NULL) | |
2de7ced7 DJ |
496 | { |
497 | gsymbol->language = language_java; | |
498 | return demangled; | |
499 | } | |
500 | } | |
501 | return NULL; | |
502 | } | |
503 | ||
980cae7a DC |
504 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
505 | on LINKAGE_NAME and LEN. The hash table corresponding to OBJFILE | |
4a146b47 | 506 | is used, and the memory comes from that objfile's objfile_obstack. |
980cae7a DC |
507 | LINKAGE_NAME is copied, so the pointer can be discarded after |
508 | calling this function. */ | |
2de7ced7 | 509 | |
d2a52b27 DC |
510 | /* We have to be careful when dealing with Java names: when we run |
511 | into a Java minimal symbol, we don't know it's a Java symbol, so it | |
512 | gets demangled as a C++ name. This is unfortunate, but there's not | |
513 | much we can do about it: but when demangling partial symbols and | |
514 | regular symbols, we'd better not reuse the wrong demangled name. | |
515 | (See PR gdb/1039.) We solve this by putting a distinctive prefix | |
516 | on Java names when storing them in the hash table. */ | |
517 | ||
518 | /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I | |
519 | don't mind the Java prefix so much: different languages have | |
520 | different demangling requirements, so it's only natural that we | |
521 | need to keep language data around in our demangling cache. But | |
522 | it's not good that the minimal symbol has the wrong demangled name. | |
523 | Unfortunately, I can't think of any easy solution to that | |
524 | problem. */ | |
525 | ||
526 | #define JAVA_PREFIX "##JAVA$$" | |
527 | #define JAVA_PREFIX_LEN 8 | |
528 | ||
2de7ced7 DJ |
529 | void |
530 | symbol_set_names (struct general_symbol_info *gsymbol, | |
980cae7a | 531 | const char *linkage_name, int len, struct objfile *objfile) |
2de7ced7 DJ |
532 | { |
533 | char **slot; | |
980cae7a DC |
534 | /* A 0-terminated copy of the linkage name. */ |
535 | const char *linkage_name_copy; | |
d2a52b27 DC |
536 | /* A copy of the linkage name that might have a special Java prefix |
537 | added to it, for use when looking names up in the hash table. */ | |
538 | const char *lookup_name; | |
539 | /* The length of lookup_name. */ | |
540 | int lookup_len; | |
2de7ced7 DJ |
541 | |
542 | if (objfile->demangled_names_hash == NULL) | |
543 | create_demangled_names_hash (objfile); | |
544 | ||
b06ead72 JB |
545 | if (gsymbol->language == language_ada) |
546 | { | |
547 | /* In Ada, we do the symbol lookups using the mangled name, so | |
548 | we can save some space by not storing the demangled name. | |
549 | ||
550 | As a side note, we have also observed some overlap between | |
551 | the C++ mangling and Ada mangling, similarly to what has | |
552 | been observed with Java. Because we don't store the demangled | |
553 | name with the symbol, we don't need to use the same trick | |
554 | as Java. */ | |
555 | gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1); | |
556 | memcpy (gsymbol->name, linkage_name, len); | |
557 | gsymbol->name[len] = '\0'; | |
558 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
559 | ||
560 | return; | |
561 | } | |
562 | ||
980cae7a DC |
563 | /* The stabs reader generally provides names that are not |
564 | NUL-terminated; most of the other readers don't do this, so we | |
d2a52b27 DC |
565 | can just use the given copy, unless we're in the Java case. */ |
566 | if (gsymbol->language == language_java) | |
567 | { | |
568 | char *alloc_name; | |
569 | lookup_len = len + JAVA_PREFIX_LEN; | |
570 | ||
571 | alloc_name = alloca (lookup_len + 1); | |
572 | memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN); | |
573 | memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len); | |
574 | alloc_name[lookup_len] = '\0'; | |
575 | ||
576 | lookup_name = alloc_name; | |
577 | linkage_name_copy = alloc_name + JAVA_PREFIX_LEN; | |
578 | } | |
579 | else if (linkage_name[len] != '\0') | |
2de7ced7 | 580 | { |
980cae7a | 581 | char *alloc_name; |
d2a52b27 | 582 | lookup_len = len; |
980cae7a | 583 | |
d2a52b27 | 584 | alloc_name = alloca (lookup_len + 1); |
980cae7a | 585 | memcpy (alloc_name, linkage_name, len); |
d2a52b27 | 586 | alloc_name[lookup_len] = '\0'; |
980cae7a | 587 | |
d2a52b27 | 588 | lookup_name = alloc_name; |
980cae7a | 589 | linkage_name_copy = alloc_name; |
2de7ced7 DJ |
590 | } |
591 | else | |
980cae7a | 592 | { |
d2a52b27 DC |
593 | lookup_len = len; |
594 | lookup_name = linkage_name; | |
980cae7a DC |
595 | linkage_name_copy = linkage_name; |
596 | } | |
2de7ced7 | 597 | |
980cae7a | 598 | slot = (char **) htab_find_slot (objfile->demangled_names_hash, |
d2a52b27 | 599 | lookup_name, INSERT); |
2de7ced7 DJ |
600 | |
601 | /* If this name is not in the hash table, add it. */ | |
602 | if (*slot == NULL) | |
603 | { | |
980cae7a DC |
604 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
605 | linkage_name_copy); | |
2de7ced7 DJ |
606 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
607 | ||
608 | /* If there is a demangled name, place it right after the mangled name. | |
609 | Otherwise, just place a second zero byte after the end of the mangled | |
610 | name. */ | |
4a146b47 | 611 | *slot = obstack_alloc (&objfile->objfile_obstack, |
d2a52b27 DC |
612 | lookup_len + demangled_len + 2); |
613 | memcpy (*slot, lookup_name, lookup_len + 1); | |
980cae7a | 614 | if (demangled_name != NULL) |
2de7ced7 | 615 | { |
d2a52b27 | 616 | memcpy (*slot + lookup_len + 1, demangled_name, demangled_len + 1); |
2de7ced7 DJ |
617 | xfree (demangled_name); |
618 | } | |
619 | else | |
d2a52b27 | 620 | (*slot)[lookup_len + 1] = '\0'; |
2de7ced7 DJ |
621 | } |
622 | ||
d2a52b27 DC |
623 | gsymbol->name = *slot + lookup_len - len; |
624 | if ((*slot)[lookup_len + 1] != '\0') | |
2de7ced7 | 625 | gsymbol->language_specific.cplus_specific.demangled_name |
d2a52b27 | 626 | = &(*slot)[lookup_len + 1]; |
2de7ced7 DJ |
627 | else |
628 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
629 | } | |
630 | ||
22abf04a DC |
631 | /* Return the source code name of a symbol. In languages where |
632 | demangling is necessary, this is the demangled name. */ | |
633 | ||
634 | char * | |
635 | symbol_natural_name (const struct general_symbol_info *gsymbol) | |
636 | { | |
1f8173e6 | 637 | switch (gsymbol->language) |
22abf04a | 638 | { |
1f8173e6 PH |
639 | case language_cplus: |
640 | case language_java: | |
641 | case language_objc: | |
642 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
643 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
644 | break; | |
645 | case language_ada: | |
646 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
647 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
648 | else | |
649 | return ada_decode_symbol (gsymbol); | |
650 | break; | |
651 | default: | |
652 | break; | |
22abf04a | 653 | } |
1f8173e6 | 654 | return gsymbol->name; |
22abf04a DC |
655 | } |
656 | ||
9cc0d196 EZ |
657 | /* Return the demangled name for a symbol based on the language for |
658 | that symbol. If no demangled name exists, return NULL. */ | |
659 | char * | |
660 | symbol_demangled_name (struct general_symbol_info *gsymbol) | |
661 | { | |
1f8173e6 PH |
662 | switch (gsymbol->language) |
663 | { | |
664 | case language_cplus: | |
665 | case language_java: | |
666 | case language_objc: | |
667 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
668 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
669 | break; | |
670 | case language_ada: | |
671 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
672 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
673 | else | |
674 | return ada_decode_symbol (gsymbol); | |
675 | break; | |
676 | default: | |
677 | break; | |
678 | } | |
679 | return NULL; | |
9cc0d196 | 680 | } |
fe39c653 | 681 | |
4725b721 PH |
682 | /* Return the search name of a symbol---generally the demangled or |
683 | linkage name of the symbol, depending on how it will be searched for. | |
684 | If there is no distinct demangled name, then returns the same value | |
685 | (same pointer) as SYMBOL_LINKAGE_NAME. */ | |
fc062ac6 JB |
686 | char * |
687 | symbol_search_name (const struct general_symbol_info *gsymbol) | |
688 | { | |
1f8173e6 PH |
689 | if (gsymbol->language == language_ada) |
690 | return gsymbol->name; | |
691 | else | |
692 | return symbol_natural_name (gsymbol); | |
4725b721 PH |
693 | } |
694 | ||
fe39c653 EZ |
695 | /* Initialize the structure fields to zero values. */ |
696 | void | |
697 | init_sal (struct symtab_and_line *sal) | |
698 | { | |
699 | sal->symtab = 0; | |
700 | sal->section = 0; | |
701 | sal->line = 0; | |
702 | sal->pc = 0; | |
703 | sal->end = 0; | |
ed0616c6 VP |
704 | sal->explicit_pc = 0; |
705 | sal->explicit_line = 0; | |
fe39c653 | 706 | } |
c906108c SS |
707 | \f |
708 | ||
94277a38 DJ |
709 | /* Return 1 if the two sections are the same, or if they could |
710 | plausibly be copies of each other, one in an original object | |
711 | file and another in a separated debug file. */ | |
712 | ||
713 | int | |
714 | matching_bfd_sections (asection *first, asection *second) | |
715 | { | |
716 | struct objfile *obj; | |
717 | ||
718 | /* If they're the same section, then they match. */ | |
719 | if (first == second) | |
720 | return 1; | |
721 | ||
722 | /* If either is NULL, give up. */ | |
723 | if (first == NULL || second == NULL) | |
724 | return 0; | |
725 | ||
726 | /* This doesn't apply to absolute symbols. */ | |
727 | if (first->owner == NULL || second->owner == NULL) | |
728 | return 0; | |
729 | ||
730 | /* If they're in the same object file, they must be different sections. */ | |
731 | if (first->owner == second->owner) | |
732 | return 0; | |
733 | ||
734 | /* Check whether the two sections are potentially corresponding. They must | |
735 | have the same size, address, and name. We can't compare section indexes, | |
736 | which would be more reliable, because some sections may have been | |
737 | stripped. */ | |
738 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
739 | return 0; | |
740 | ||
818f79f6 | 741 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 742 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
743 | - bfd_get_start_address (first->owner) |
744 | != bfd_get_section_vma (second->owner, second) | |
745 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
746 | return 0; |
747 | ||
748 | if (bfd_get_section_name (first->owner, first) == NULL | |
749 | || bfd_get_section_name (second->owner, second) == NULL | |
750 | || strcmp (bfd_get_section_name (first->owner, first), | |
751 | bfd_get_section_name (second->owner, second)) != 0) | |
752 | return 0; | |
753 | ||
754 | /* Otherwise check that they are in corresponding objfiles. */ | |
755 | ||
756 | ALL_OBJFILES (obj) | |
757 | if (obj->obfd == first->owner) | |
758 | break; | |
759 | gdb_assert (obj != NULL); | |
760 | ||
761 | if (obj->separate_debug_objfile != NULL | |
762 | && obj->separate_debug_objfile->obfd == second->owner) | |
763 | return 1; | |
764 | if (obj->separate_debug_objfile_backlink != NULL | |
765 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
766 | return 1; | |
767 | ||
768 | return 0; | |
769 | } | |
c5aa993b | 770 | |
ff013f42 JK |
771 | /* Find which partial symtab contains PC and SECTION starting at psymtab PST. |
772 | We may find a different psymtab than PST. See FIND_PC_SECT_PSYMTAB. */ | |
773 | ||
774 | struct partial_symtab * | |
775 | find_pc_sect_psymtab_closer (CORE_ADDR pc, asection *section, | |
776 | struct partial_symtab *pst, | |
777 | struct minimal_symbol *msymbol) | |
778 | { | |
779 | struct objfile *objfile = pst->objfile; | |
780 | struct partial_symtab *tpst; | |
781 | struct partial_symtab *best_pst = pst; | |
782 | CORE_ADDR best_addr = pst->textlow; | |
783 | ||
784 | /* An objfile that has its functions reordered might have | |
785 | many partial symbol tables containing the PC, but | |
786 | we want the partial symbol table that contains the | |
787 | function containing the PC. */ | |
788 | if (!(objfile->flags & OBJF_REORDERED) && | |
789 | section == 0) /* can't validate section this way */ | |
790 | return pst; | |
791 | ||
792 | if (msymbol == NULL) | |
793 | return (pst); | |
794 | ||
795 | /* The code range of partial symtabs sometimes overlap, so, in | |
796 | the loop below, we need to check all partial symtabs and | |
797 | find the one that fits better for the given PC address. We | |
798 | select the partial symtab that contains a symbol whose | |
799 | address is closest to the PC address. By closest we mean | |
800 | that find_pc_sect_symbol returns the symbol with address | |
801 | that is closest and still less than the given PC. */ | |
802 | for (tpst = pst; tpst != NULL; tpst = tpst->next) | |
803 | { | |
804 | if (pc >= tpst->textlow && pc < tpst->texthigh) | |
805 | { | |
806 | struct partial_symbol *p; | |
807 | CORE_ADDR this_addr; | |
808 | ||
809 | /* NOTE: This assumes that every psymbol has a | |
810 | corresponding msymbol, which is not necessarily | |
811 | true; the debug info might be much richer than the | |
812 | object's symbol table. */ | |
813 | p = find_pc_sect_psymbol (tpst, pc, section); | |
814 | if (p != NULL | |
815 | && SYMBOL_VALUE_ADDRESS (p) | |
816 | == SYMBOL_VALUE_ADDRESS (msymbol)) | |
817 | return tpst; | |
818 | ||
819 | /* Also accept the textlow value of a psymtab as a | |
820 | "symbol", to provide some support for partial | |
821 | symbol tables with line information but no debug | |
822 | symbols (e.g. those produced by an assembler). */ | |
823 | if (p != NULL) | |
824 | this_addr = SYMBOL_VALUE_ADDRESS (p); | |
825 | else | |
826 | this_addr = tpst->textlow; | |
827 | ||
828 | /* Check whether it is closer than our current | |
829 | BEST_ADDR. Since this symbol address is | |
830 | necessarily lower or equal to PC, the symbol closer | |
831 | to PC is the symbol which address is the highest. | |
832 | This way we return the psymtab which contains such | |
833 | best match symbol. This can help in cases where the | |
834 | symbol information/debuginfo is not complete, like | |
835 | for instance on IRIX6 with gcc, where no debug info | |
836 | is emitted for statics. (See also the nodebug.exp | |
837 | testcase.) */ | |
838 | if (this_addr > best_addr) | |
839 | { | |
840 | best_addr = this_addr; | |
841 | best_pst = tpst; | |
842 | } | |
843 | } | |
844 | } | |
845 | return best_pst; | |
846 | } | |
847 | ||
ccefbec3 EZ |
848 | /* Find which partial symtab contains PC and SECTION. Return 0 if |
849 | none. We return the psymtab that contains a symbol whose address | |
850 | exactly matches PC, or, if we cannot find an exact match, the | |
851 | psymtab that contains a symbol whose address is closest to PC. */ | |
c906108c | 852 | struct partial_symtab * |
fba45db2 | 853 | find_pc_sect_psymtab (CORE_ADDR pc, asection *section) |
c906108c | 854 | { |
52f0bd74 | 855 | struct objfile *objfile; |
8a48e967 DJ |
856 | struct minimal_symbol *msymbol; |
857 | ||
858 | /* If we know that this is not a text address, return failure. This is | |
859 | necessary because we loop based on texthigh and textlow, which do | |
860 | not include the data ranges. */ | |
861 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
862 | if (msymbol | |
863 | && (msymbol->type == mst_data | |
864 | || msymbol->type == mst_bss | |
865 | || msymbol->type == mst_abs | |
866 | || msymbol->type == mst_file_data | |
867 | || msymbol->type == mst_file_bss)) | |
868 | return NULL; | |
c906108c | 869 | |
ff013f42 JK |
870 | /* Try just the PSYMTABS_ADDRMAP mapping first as it has better granularity |
871 | than the later used TEXTLOW/TEXTHIGH one. */ | |
872 | ||
873 | ALL_OBJFILES (objfile) | |
874 | if (objfile->psymtabs_addrmap != NULL) | |
c5aa993b | 875 | { |
ff013f42 JK |
876 | struct partial_symtab *pst; |
877 | ||
878 | pst = addrmap_find (objfile->psymtabs_addrmap, pc); | |
879 | if (pst != NULL) | |
c5aa993b | 880 | { |
ff013f42 JK |
881 | /* We do not try to call FIND_PC_SECT_PSYMTAB_CLOSER as |
882 | PSYMTABS_ADDRMAP we used has already the best 1-byte | |
883 | granularity and FIND_PC_SECT_PSYMTAB_CLOSER may mislead us into | |
884 | a worse chosen section due to the TEXTLOW/TEXTHIGH ranges | |
885 | overlap. */ | |
886 | ||
887 | return pst; | |
c5aa993b | 888 | } |
c5aa993b | 889 | } |
ff013f42 JK |
890 | |
891 | /* Existing PSYMTABS_ADDRMAP mapping is present even for PARTIAL_SYMTABs | |
892 | which still have no corresponding full SYMTABs read. But it is not | |
893 | present for non-DWARF2 debug infos not supporting PSYMTABS_ADDRMAP in GDB | |
894 | so far. */ | |
895 | ||
896 | ALL_OBJFILES (objfile) | |
897 | { | |
898 | struct partial_symtab *pst; | |
899 | ||
900 | /* Check even OBJFILE with non-zero PSYMTABS_ADDRMAP as only several of | |
901 | its CUs may be missing in PSYMTABS_ADDRMAP as they may be varying | |
902 | debug info type in single OBJFILE. */ | |
903 | ||
904 | ALL_OBJFILE_PSYMTABS (objfile, pst) | |
905 | if (pc >= pst->textlow && pc < pst->texthigh) | |
906 | { | |
907 | struct partial_symtab *best_pst; | |
908 | ||
909 | best_pst = find_pc_sect_psymtab_closer (pc, section, pst, | |
910 | msymbol); | |
911 | if (best_pst != NULL) | |
912 | return best_pst; | |
913 | } | |
914 | } | |
915 | ||
916 | return NULL; | |
c906108c SS |
917 | } |
918 | ||
919 | /* Find which partial symtab contains PC. Return 0 if none. | |
920 | Backward compatibility, no section */ | |
921 | ||
922 | struct partial_symtab * | |
fba45db2 | 923 | find_pc_psymtab (CORE_ADDR pc) |
c906108c SS |
924 | { |
925 | return find_pc_sect_psymtab (pc, find_pc_mapped_section (pc)); | |
926 | } | |
927 | ||
928 | /* Find which partial symbol within a psymtab matches PC and SECTION. | |
929 | Return 0 if none. Check all psymtabs if PSYMTAB is 0. */ | |
930 | ||
931 | struct partial_symbol * | |
fba45db2 KB |
932 | find_pc_sect_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc, |
933 | asection *section) | |
c906108c SS |
934 | { |
935 | struct partial_symbol *best = NULL, *p, **pp; | |
936 | CORE_ADDR best_pc; | |
c5aa993b | 937 | |
c906108c SS |
938 | if (!psymtab) |
939 | psymtab = find_pc_sect_psymtab (pc, section); | |
940 | if (!psymtab) | |
941 | return 0; | |
942 | ||
943 | /* Cope with programs that start at address 0 */ | |
944 | best_pc = (psymtab->textlow != 0) ? psymtab->textlow - 1 : 0; | |
945 | ||
946 | /* Search the global symbols as well as the static symbols, so that | |
947 | find_pc_partial_function doesn't use a minimal symbol and thus | |
948 | cache a bad endaddr. */ | |
949 | for (pp = psymtab->objfile->global_psymbols.list + psymtab->globals_offset; | |
c5aa993b JM |
950 | (pp - (psymtab->objfile->global_psymbols.list + psymtab->globals_offset) |
951 | < psymtab->n_global_syms); | |
c906108c SS |
952 | pp++) |
953 | { | |
954 | p = *pp; | |
176620f1 | 955 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN |
c906108c SS |
956 | && SYMBOL_CLASS (p) == LOC_BLOCK |
957 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
958 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
959 | || (psymtab->textlow == 0 | |
960 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) | |
961 | { | |
c5aa993b | 962 | if (section) /* match on a specific section */ |
c906108c SS |
963 | { |
964 | fixup_psymbol_section (p, psymtab->objfile); | |
94277a38 | 965 | if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p), section)) |
c906108c SS |
966 | continue; |
967 | } | |
968 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
969 | best = p; | |
970 | } | |
971 | } | |
972 | ||
973 | for (pp = psymtab->objfile->static_psymbols.list + psymtab->statics_offset; | |
c5aa993b JM |
974 | (pp - (psymtab->objfile->static_psymbols.list + psymtab->statics_offset) |
975 | < psymtab->n_static_syms); | |
c906108c SS |
976 | pp++) |
977 | { | |
978 | p = *pp; | |
176620f1 | 979 | if (SYMBOL_DOMAIN (p) == VAR_DOMAIN |
c906108c SS |
980 | && SYMBOL_CLASS (p) == LOC_BLOCK |
981 | && pc >= SYMBOL_VALUE_ADDRESS (p) | |
982 | && (SYMBOL_VALUE_ADDRESS (p) > best_pc | |
c5aa993b | 983 | || (psymtab->textlow == 0 |
c906108c SS |
984 | && best_pc == 0 && SYMBOL_VALUE_ADDRESS (p) == 0))) |
985 | { | |
c5aa993b | 986 | if (section) /* match on a specific section */ |
c906108c SS |
987 | { |
988 | fixup_psymbol_section (p, psymtab->objfile); | |
94277a38 | 989 | if (!matching_bfd_sections (SYMBOL_BFD_SECTION (p), section)) |
c906108c SS |
990 | continue; |
991 | } | |
992 | best_pc = SYMBOL_VALUE_ADDRESS (p); | |
993 | best = p; | |
994 | } | |
995 | } | |
996 | ||
997 | return best; | |
998 | } | |
999 | ||
1000 | /* Find which partial symbol within a psymtab matches PC. Return 0 if none. | |
1001 | Check all psymtabs if PSYMTAB is 0. Backwards compatibility, no section. */ | |
1002 | ||
1003 | struct partial_symbol * | |
fba45db2 | 1004 | find_pc_psymbol (struct partial_symtab *psymtab, CORE_ADDR pc) |
c906108c SS |
1005 | { |
1006 | return find_pc_sect_psymbol (psymtab, pc, find_pc_mapped_section (pc)); | |
1007 | } | |
1008 | \f | |
1009 | /* Debug symbols usually don't have section information. We need to dig that | |
1010 | out of the minimal symbols and stash that in the debug symbol. */ | |
1011 | ||
1012 | static void | |
fba45db2 | 1013 | fixup_section (struct general_symbol_info *ginfo, struct objfile *objfile) |
c906108c SS |
1014 | { |
1015 | struct minimal_symbol *msym; | |
1016 | msym = lookup_minimal_symbol (ginfo->name, NULL, objfile); | |
1017 | ||
bccdca4a UW |
1018 | /* First, check whether a minimal symbol with the same name exists |
1019 | and points to the same address. The address check is required | |
1020 | e.g. on PowerPC64, where the minimal symbol for a function will | |
1021 | point to the function descriptor, while the debug symbol will | |
1022 | point to the actual function code. */ | |
1023 | if (msym | |
1024 | && SYMBOL_VALUE_ADDRESS (msym) == ginfo->value.address) | |
7a78d0ee KB |
1025 | { |
1026 | ginfo->bfd_section = SYMBOL_BFD_SECTION (msym); | |
1027 | ginfo->section = SYMBOL_SECTION (msym); | |
1028 | } | |
19e2d14b KB |
1029 | else if (objfile) |
1030 | { | |
1031 | /* Static, function-local variables do appear in the linker | |
1032 | (minimal) symbols, but are frequently given names that won't | |
1033 | be found via lookup_minimal_symbol(). E.g., it has been | |
1034 | observed in frv-uclinux (ELF) executables that a static, | |
1035 | function-local variable named "foo" might appear in the | |
1036 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
1037 | point in attempting to extend the lookup-by-name mechanism to | |
1038 | handle this case due to the fact that there can be multiple | |
1039 | names. | |
1040 | ||
1041 | So, instead, search the section table when lookup by name has | |
1042 | failed. The ``addr'' and ``endaddr'' fields may have already | |
1043 | been relocated. If so, the relocation offset (i.e. the | |
1044 | ANOFFSET value) needs to be subtracted from these values when | |
1045 | performing the comparison. We unconditionally subtract it, | |
1046 | because, when no relocation has been performed, the ANOFFSET | |
1047 | value will simply be zero. | |
1048 | ||
1049 | The address of the symbol whose section we're fixing up HAS | |
1050 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
1051 | the section isn't yet known and knowing the section is | |
1052 | necessary in order to add the correct relocation value. In | |
1053 | other words, we wouldn't even be in this function (attempting | |
1054 | to compute the section) if it were already known. | |
1055 | ||
1056 | Note that it is possible to search the minimal symbols | |
1057 | (subtracting the relocation value if necessary) to find the | |
1058 | matching minimal symbol, but this is overkill and much less | |
1059 | efficient. It is not necessary to find the matching minimal | |
1060 | symbol, only its section. | |
1061 | ||
1062 | Note that this technique (of doing a section table search) | |
1063 | can fail when unrelocated section addresses overlap. For | |
1064 | this reason, we still attempt a lookup by name prior to doing | |
1065 | a search of the section table. */ | |
1066 | ||
1067 | CORE_ADDR addr; | |
1068 | struct obj_section *s; | |
1069 | ||
1070 | addr = ginfo->value.address; | |
1071 | ||
1072 | ALL_OBJFILE_OSECTIONS (objfile, s) | |
1073 | { | |
1074 | int idx = s->the_bfd_section->index; | |
1075 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); | |
1076 | ||
1077 | if (s->addr - offset <= addr && addr < s->endaddr - offset) | |
1078 | { | |
1079 | ginfo->bfd_section = s->the_bfd_section; | |
1080 | ginfo->section = idx; | |
1081 | return; | |
1082 | } | |
1083 | } | |
1084 | } | |
c906108c SS |
1085 | } |
1086 | ||
1087 | struct symbol * | |
fba45db2 | 1088 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c SS |
1089 | { |
1090 | if (!sym) | |
1091 | return NULL; | |
1092 | ||
1093 | if (SYMBOL_BFD_SECTION (sym)) | |
1094 | return sym; | |
1095 | ||
1096 | fixup_section (&sym->ginfo, objfile); | |
1097 | ||
1098 | return sym; | |
1099 | } | |
1100 | ||
7a78d0ee | 1101 | struct partial_symbol * |
fba45db2 | 1102 | fixup_psymbol_section (struct partial_symbol *psym, struct objfile *objfile) |
c906108c SS |
1103 | { |
1104 | if (!psym) | |
1105 | return NULL; | |
1106 | ||
1107 | if (SYMBOL_BFD_SECTION (psym)) | |
1108 | return psym; | |
1109 | ||
1110 | fixup_section (&psym->ginfo, objfile); | |
1111 | ||
1112 | return psym; | |
1113 | } | |
1114 | ||
1115 | /* Find the definition for a specified symbol name NAME | |
176620f1 | 1116 | in domain DOMAIN, visible from lexical block BLOCK. |
c906108c SS |
1117 | Returns the struct symbol pointer, or zero if no symbol is found. |
1118 | If SYMTAB is non-NULL, store the symbol table in which the | |
1119 | symbol was found there, or NULL if not found. | |
1120 | C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if | |
1121 | NAME is a field of the current implied argument `this'. If so set | |
1122 | *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. | |
1123 | BLOCK_FOUND is set to the block in which NAME is found (in the case of | |
1124 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ | |
1125 | ||
1126 | /* This function has a bunch of loops in it and it would seem to be | |
1127 | attractive to put in some QUIT's (though I'm not really sure | |
1128 | whether it can run long enough to be really important). But there | |
1129 | are a few calls for which it would appear to be bad news to quit | |
7ca9f392 AC |
1130 | out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note |
1131 | that there is C++ code below which can error(), but that probably | |
1132 | doesn't affect these calls since they are looking for a known | |
1133 | variable and thus can probably assume it will never hit the C++ | |
1134 | code). */ | |
c906108c SS |
1135 | |
1136 | struct symbol * | |
53c5240f PA |
1137 | lookup_symbol_in_language (const char *name, const struct block *block, |
1138 | const domain_enum domain, enum language lang, | |
1139 | int *is_a_field_of_this, | |
1140 | struct symtab **symtab) | |
c906108c | 1141 | { |
729051e6 DJ |
1142 | char *demangled_name = NULL; |
1143 | const char *modified_name = NULL; | |
3121eff0 | 1144 | const char *mangled_name = NULL; |
fba7f19c EZ |
1145 | int needtofreename = 0; |
1146 | struct symbol *returnval; | |
c906108c | 1147 | |
729051e6 DJ |
1148 | modified_name = name; |
1149 | ||
987504bb | 1150 | /* If we are using C++ or Java, demangle the name before doing a lookup, so |
729051e6 | 1151 | we can always binary search. */ |
53c5240f | 1152 | if (lang == language_cplus) |
729051e6 DJ |
1153 | { |
1154 | demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS); | |
1155 | if (demangled_name) | |
1156 | { | |
1157 | mangled_name = name; | |
1158 | modified_name = demangled_name; | |
1159 | needtofreename = 1; | |
1160 | } | |
1161 | } | |
53c5240f | 1162 | else if (lang == language_java) |
987504bb JJ |
1163 | { |
1164 | demangled_name = cplus_demangle (name, | |
1165 | DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA); | |
1166 | if (demangled_name) | |
1167 | { | |
1168 | mangled_name = name; | |
1169 | modified_name = demangled_name; | |
1170 | needtofreename = 1; | |
1171 | } | |
1172 | } | |
729051e6 | 1173 | |
63872f9d JG |
1174 | if (case_sensitivity == case_sensitive_off) |
1175 | { | |
1176 | char *copy; | |
1177 | int len, i; | |
1178 | ||
1179 | len = strlen (name); | |
1180 | copy = (char *) alloca (len + 1); | |
1181 | for (i= 0; i < len; i++) | |
1182 | copy[i] = tolower (name[i]); | |
1183 | copy[len] = 0; | |
fba7f19c | 1184 | modified_name = copy; |
63872f9d | 1185 | } |
fba7f19c | 1186 | |
3121eff0 | 1187 | returnval = lookup_symbol_aux (modified_name, mangled_name, block, |
53c5240f PA |
1188 | domain, lang, |
1189 | is_a_field_of_this, symtab); | |
fba7f19c | 1190 | if (needtofreename) |
729051e6 | 1191 | xfree (demangled_name); |
fba7f19c | 1192 | |
cb1df416 DJ |
1193 | /* Override the returned symtab with the symbol's specific one. */ |
1194 | if (returnval != NULL && symtab != NULL) | |
1195 | *symtab = SYMBOL_SYMTAB (returnval); | |
1196 | ||
fba7f19c EZ |
1197 | return returnval; |
1198 | } | |
1199 | ||
53c5240f PA |
1200 | /* Behave like lookup_symbol_in_language, but performed with the |
1201 | current language. */ | |
1202 | ||
1203 | struct symbol * | |
1204 | lookup_symbol (const char *name, const struct block *block, | |
1205 | domain_enum domain, int *is_a_field_of_this, | |
1206 | struct symtab **symtab) | |
1207 | { | |
1208 | return lookup_symbol_in_language (name, block, domain, | |
1209 | current_language->la_language, | |
1210 | is_a_field_of_this, symtab); | |
1211 | } | |
1212 | ||
1213 | /* Behave like lookup_symbol except that NAME is the natural name | |
5ad1c190 DC |
1214 | of the symbol that we're looking for and, if LINKAGE_NAME is |
1215 | non-NULL, ensure that the symbol's linkage name matches as | |
1216 | well. */ | |
1217 | ||
fba7f19c | 1218 | static struct symbol * |
5ad1c190 | 1219 | lookup_symbol_aux (const char *name, const char *linkage_name, |
176620f1 | 1220 | const struct block *block, const domain_enum domain, |
53c5240f | 1221 | enum language language, |
3121eff0 | 1222 | int *is_a_field_of_this, struct symtab **symtab) |
fba7f19c | 1223 | { |
8155455b | 1224 | struct symbol *sym; |
53c5240f | 1225 | const struct language_defn *langdef; |
406bc4de | 1226 | |
9a146a11 EZ |
1227 | /* Make sure we do something sensible with is_a_field_of_this, since |
1228 | the callers that set this parameter to some non-null value will | |
1229 | certainly use it later and expect it to be either 0 or 1. | |
1230 | If we don't set it, the contents of is_a_field_of_this are | |
1231 | undefined. */ | |
1232 | if (is_a_field_of_this != NULL) | |
1233 | *is_a_field_of_this = 0; | |
1234 | ||
e4051eeb DC |
1235 | /* Search specified block and its superiors. Don't search |
1236 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1237 | |
5ad1c190 | 1238 | sym = lookup_symbol_aux_local (name, linkage_name, block, domain, |
89a9d1b1 | 1239 | symtab); |
8155455b DC |
1240 | if (sym != NULL) |
1241 | return sym; | |
c906108c | 1242 | |
53c5240f PA |
1243 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
1244 | check to see if NAME is a field of `this'. */ | |
1245 | ||
1246 | langdef = language_def (language); | |
5f9a71c3 | 1247 | |
2b2d9e11 VP |
1248 | if (langdef->la_name_of_this != NULL && is_a_field_of_this != NULL |
1249 | && block != NULL) | |
c906108c | 1250 | { |
2b2d9e11 VP |
1251 | struct symbol *sym = NULL; |
1252 | /* 'this' is only defined in the function's block, so find the | |
1253 | enclosing function block. */ | |
1254 | for (; block && !BLOCK_FUNCTION (block); | |
1255 | block = BLOCK_SUPERBLOCK (block)); | |
1256 | ||
1257 | if (block && !dict_empty (BLOCK_DICT (block))) | |
1258 | sym = lookup_block_symbol (block, langdef->la_name_of_this, | |
1259 | NULL, VAR_DOMAIN); | |
1260 | if (sym) | |
c906108c | 1261 | { |
2b2d9e11 VP |
1262 | struct type *t = sym->type; |
1263 | ||
1264 | /* I'm not really sure that type of this can ever | |
1265 | be typedefed; just be safe. */ | |
1266 | CHECK_TYPEDEF (t); | |
1267 | if (TYPE_CODE (t) == TYPE_CODE_PTR | |
1268 | || TYPE_CODE (t) == TYPE_CODE_REF) | |
1269 | t = TYPE_TARGET_TYPE (t); | |
1270 | ||
1271 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT | |
1272 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
1273 | error (_("Internal error: `%s' is not an aggregate"), | |
1274 | langdef->la_name_of_this); | |
1275 | ||
1276 | if (check_field (t, name)) | |
1277 | { | |
1278 | *is_a_field_of_this = 1; | |
1279 | if (symtab != NULL) | |
1280 | *symtab = NULL; | |
1281 | return NULL; | |
1282 | } | |
c906108c SS |
1283 | } |
1284 | } | |
1285 | ||
53c5240f | 1286 | /* Now do whatever is appropriate for LANGUAGE to look |
5f9a71c3 | 1287 | up static and global variables. */ |
c906108c | 1288 | |
53c5240f PA |
1289 | sym = langdef->la_lookup_symbol_nonlocal (name, linkage_name, |
1290 | block, domain, symtab); | |
8155455b DC |
1291 | if (sym != NULL) |
1292 | return sym; | |
c906108c | 1293 | |
8155455b DC |
1294 | /* Now search all static file-level symbols. Not strictly correct, |
1295 | but more useful than an error. Do the symtabs first, then check | |
1296 | the psymtabs. If a psymtab indicates the existence of the | |
1297 | desired name as a file-level static, then do psymtab-to-symtab | |
c906108c SS |
1298 | conversion on the fly and return the found symbol. */ |
1299 | ||
5ad1c190 | 1300 | sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, linkage_name, |
176620f1 | 1301 | domain, symtab); |
8155455b DC |
1302 | if (sym != NULL) |
1303 | return sym; | |
1304 | ||
5ad1c190 | 1305 | sym = lookup_symbol_aux_psymtabs (STATIC_BLOCK, name, linkage_name, |
176620f1 | 1306 | domain, symtab); |
8155455b DC |
1307 | if (sym != NULL) |
1308 | return sym; | |
c906108c | 1309 | |
c906108c SS |
1310 | if (symtab != NULL) |
1311 | *symtab = NULL; | |
8155455b | 1312 | return NULL; |
c906108c | 1313 | } |
8155455b | 1314 | |
e4051eeb | 1315 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 1316 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b DC |
1317 | |
1318 | static struct symbol * | |
5ad1c190 | 1319 | lookup_symbol_aux_local (const char *name, const char *linkage_name, |
8155455b | 1320 | const struct block *block, |
176620f1 | 1321 | const domain_enum domain, |
89a9d1b1 | 1322 | struct symtab **symtab) |
8155455b DC |
1323 | { |
1324 | struct symbol *sym; | |
89a9d1b1 DC |
1325 | const struct block *static_block = block_static_block (block); |
1326 | ||
e4051eeb DC |
1327 | /* Check if either no block is specified or it's a global block. */ |
1328 | ||
89a9d1b1 DC |
1329 | if (static_block == NULL) |
1330 | return NULL; | |
e4051eeb | 1331 | |
89a9d1b1 | 1332 | while (block != static_block) |
f61e8913 | 1333 | { |
5ad1c190 | 1334 | sym = lookup_symbol_aux_block (name, linkage_name, block, domain, |
f61e8913 DC |
1335 | symtab); |
1336 | if (sym != NULL) | |
1337 | return sym; | |
1338 | block = BLOCK_SUPERBLOCK (block); | |
1339 | } | |
1340 | ||
89a9d1b1 | 1341 | /* We've reached the static block without finding a result. */ |
e4051eeb | 1342 | |
f61e8913 DC |
1343 | return NULL; |
1344 | } | |
1345 | ||
3a40aaa0 UW |
1346 | /* Look up OBJFILE to BLOCK. */ |
1347 | ||
1348 | static struct objfile * | |
1349 | lookup_objfile_from_block (const struct block *block) | |
1350 | { | |
1351 | struct objfile *obj; | |
1352 | struct symtab *s; | |
1353 | ||
1354 | if (block == NULL) | |
1355 | return NULL; | |
1356 | ||
1357 | block = block_global_block (block); | |
1358 | /* Go through SYMTABS. */ | |
1359 | ALL_SYMTABS (obj, s) | |
1360 | if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK)) | |
1361 | return obj; | |
1362 | ||
1363 | return NULL; | |
1364 | } | |
1365 | ||
f61e8913 DC |
1366 | /* Look up a symbol in a block; if found, locate its symtab, fixup the |
1367 | symbol, and set block_found appropriately. */ | |
1368 | ||
5f9a71c3 | 1369 | struct symbol * |
5ad1c190 | 1370 | lookup_symbol_aux_block (const char *name, const char *linkage_name, |
f61e8913 | 1371 | const struct block *block, |
176620f1 | 1372 | const domain_enum domain, |
f61e8913 DC |
1373 | struct symtab **symtab) |
1374 | { | |
1375 | struct symbol *sym; | |
8155455b DC |
1376 | struct objfile *objfile = NULL; |
1377 | struct blockvector *bv; | |
1378 | struct block *b; | |
1379 | struct symtab *s = NULL; | |
f61e8913 | 1380 | |
5ad1c190 | 1381 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
f61e8913 | 1382 | if (sym) |
8155455b | 1383 | { |
f61e8913 DC |
1384 | block_found = block; |
1385 | if (symtab != NULL) | |
8155455b | 1386 | { |
f61e8913 DC |
1387 | /* Search the list of symtabs for one which contains the |
1388 | address of the start of this block. */ | |
11309657 | 1389 | ALL_PRIMARY_SYMTABS (objfile, s) |
8155455b | 1390 | { |
f61e8913 DC |
1391 | bv = BLOCKVECTOR (s); |
1392 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1393 | if (BLOCK_START (b) <= BLOCK_START (block) | |
1394 | && BLOCK_END (b) > BLOCK_START (block)) | |
1395 | goto found; | |
8155455b | 1396 | } |
f61e8913 DC |
1397 | found: |
1398 | *symtab = s; | |
8155455b | 1399 | } |
f61e8913 DC |
1400 | |
1401 | return fixup_symbol_section (sym, objfile); | |
8155455b DC |
1402 | } |
1403 | ||
1404 | return NULL; | |
1405 | } | |
1406 | ||
3a40aaa0 UW |
1407 | /* Check all global symbols in OBJFILE in symtabs and |
1408 | psymtabs. */ | |
1409 | ||
1410 | struct symbol * | |
1411 | lookup_global_symbol_from_objfile (const struct objfile *objfile, | |
1412 | const char *name, | |
1413 | const char *linkage_name, | |
1414 | const domain_enum domain, | |
1415 | struct symtab **symtab) | |
1416 | { | |
1417 | struct symbol *sym; | |
1418 | struct blockvector *bv; | |
1419 | const struct block *block; | |
1420 | struct symtab *s; | |
1421 | struct partial_symtab *ps; | |
1422 | ||
1423 | /* Go through symtabs. */ | |
1424 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1425 | { | |
1426 | bv = BLOCKVECTOR (s); | |
1427 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1428 | sym = lookup_block_symbol (block, name, linkage_name, domain); | |
1429 | if (sym) | |
1430 | { | |
1431 | block_found = block; | |
1432 | if (symtab != NULL) | |
1433 | *symtab = s; | |
1434 | return fixup_symbol_section (sym, (struct objfile *)objfile); | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | /* Now go through psymtabs. */ | |
1439 | ALL_OBJFILE_PSYMTABS (objfile, ps) | |
1440 | { | |
1441 | if (!ps->readin | |
1442 | && lookup_partial_symbol (ps, name, linkage_name, | |
1443 | 1, domain)) | |
1444 | { | |
1445 | s = PSYMTAB_TO_SYMTAB (ps); | |
1446 | bv = BLOCKVECTOR (s); | |
1447 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
1448 | sym = lookup_block_symbol (block, name, linkage_name, domain); | |
1449 | if (symtab != NULL) | |
1450 | *symtab = s; | |
1451 | return fixup_symbol_section (sym, (struct objfile *)objfile); | |
1452 | } | |
1453 | } | |
1454 | ||
56e3f43c DJ |
1455 | if (objfile->separate_debug_objfile) |
1456 | return lookup_global_symbol_from_objfile (objfile->separate_debug_objfile, | |
1457 | name, linkage_name, domain, | |
1458 | symtab); | |
1459 | ||
3a40aaa0 UW |
1460 | return NULL; |
1461 | } | |
1462 | ||
8155455b DC |
1463 | /* Check to see if the symbol is defined in one of the symtabs. |
1464 | BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
1465 | depending on whether or not we want to search global symbols or | |
1466 | static symbols. */ | |
1467 | ||
1468 | static struct symbol * | |
1469 | lookup_symbol_aux_symtabs (int block_index, | |
5ad1c190 | 1470 | const char *name, const char *linkage_name, |
176620f1 | 1471 | const domain_enum domain, |
8155455b DC |
1472 | struct symtab **symtab) |
1473 | { | |
1474 | struct symbol *sym; | |
1475 | struct objfile *objfile; | |
1476 | struct blockvector *bv; | |
1477 | const struct block *block; | |
1478 | struct symtab *s; | |
1479 | ||
11309657 | 1480 | ALL_PRIMARY_SYMTABS (objfile, s) |
8155455b DC |
1481 | { |
1482 | bv = BLOCKVECTOR (s); | |
1483 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
5ad1c190 | 1484 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
8155455b DC |
1485 | if (sym) |
1486 | { | |
1487 | block_found = block; | |
1488 | if (symtab != NULL) | |
1489 | *symtab = s; | |
1490 | return fixup_symbol_section (sym, objfile); | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | return NULL; | |
1495 | } | |
1496 | ||
1497 | /* Check to see if the symbol is defined in one of the partial | |
1498 | symtabs. BLOCK_INDEX should be either GLOBAL_BLOCK or | |
1499 | STATIC_BLOCK, depending on whether or not we want to search global | |
1500 | symbols or static symbols. */ | |
1501 | ||
1502 | static struct symbol * | |
1503 | lookup_symbol_aux_psymtabs (int block_index, const char *name, | |
5ad1c190 | 1504 | const char *linkage_name, |
176620f1 | 1505 | const domain_enum domain, |
8155455b DC |
1506 | struct symtab **symtab) |
1507 | { | |
1508 | struct symbol *sym; | |
1509 | struct objfile *objfile; | |
1510 | struct blockvector *bv; | |
1511 | const struct block *block; | |
1512 | struct partial_symtab *ps; | |
1513 | struct symtab *s; | |
1514 | const int psymtab_index = (block_index == GLOBAL_BLOCK ? 1 : 0); | |
1515 | ||
1516 | ALL_PSYMTABS (objfile, ps) | |
1517 | { | |
1518 | if (!ps->readin | |
5ad1c190 | 1519 | && lookup_partial_symbol (ps, name, linkage_name, |
176620f1 | 1520 | psymtab_index, domain)) |
8155455b DC |
1521 | { |
1522 | s = PSYMTAB_TO_SYMTAB (ps); | |
1523 | bv = BLOCKVECTOR (s); | |
1524 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
5ad1c190 | 1525 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
8155455b DC |
1526 | if (!sym) |
1527 | { | |
1528 | /* This shouldn't be necessary, but as a last resort try | |
1529 | looking in the statics even though the psymtab claimed | |
1530 | the symbol was global, or vice-versa. It's possible | |
1531 | that the psymtab gets it wrong in some cases. */ | |
1532 | ||
1533 | /* FIXME: carlton/2002-09-30: Should we really do that? | |
1534 | If that happens, isn't it likely to be a GDB error, in | |
1535 | which case we should fix the GDB error rather than | |
1536 | silently dealing with it here? So I'd vote for | |
1537 | removing the check for the symbol in the other | |
1538 | block. */ | |
1539 | block = BLOCKVECTOR_BLOCK (bv, | |
1540 | block_index == GLOBAL_BLOCK ? | |
1541 | STATIC_BLOCK : GLOBAL_BLOCK); | |
5ad1c190 | 1542 | sym = lookup_block_symbol (block, name, linkage_name, domain); |
8155455b | 1543 | if (!sym) |
8a3fe4f8 | 1544 | error (_("Internal: %s symbol `%s' found in %s psymtab but not in symtab.\n%s may be an inlined function, or may be a template function\n(if a template, try specifying an instantiation: %s<type>)."), |
8155455b DC |
1545 | block_index == GLOBAL_BLOCK ? "global" : "static", |
1546 | name, ps->filename, name, name); | |
1547 | } | |
1548 | if (symtab != NULL) | |
1549 | *symtab = s; | |
1550 | return fixup_symbol_section (sym, objfile); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | return NULL; | |
1555 | } | |
1556 | ||
5f9a71c3 DC |
1557 | /* A default version of lookup_symbol_nonlocal for use by languages |
1558 | that can't think of anything better to do. This implements the C | |
1559 | lookup rules. */ | |
1560 | ||
1561 | struct symbol * | |
1562 | basic_lookup_symbol_nonlocal (const char *name, | |
1563 | const char *linkage_name, | |
1564 | const struct block *block, | |
1565 | const domain_enum domain, | |
1566 | struct symtab **symtab) | |
1567 | { | |
1568 | struct symbol *sym; | |
1569 | ||
1570 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
1571 | this (or what turned into this) was part of lookup_symbol_aux; | |
1572 | I'm much less worried about these questions now, since these | |
1573 | decisions have turned out well, but I leave these comments here | |
1574 | for posterity. */ | |
1575 | ||
1576 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
1577 | not it would be appropriate to search the current global block | |
1578 | here as well. (That's what this code used to do before the | |
1579 | is_a_field_of_this check was moved up.) On the one hand, it's | |
1580 | redundant with the lookup_symbol_aux_symtabs search that happens | |
1581 | next. On the other hand, if decode_line_1 is passed an argument | |
1582 | like filename:var, then the user presumably wants 'var' to be | |
1583 | searched for in filename. On the third hand, there shouldn't be | |
1584 | multiple global variables all of which are named 'var', and it's | |
1585 | not like decode_line_1 has ever restricted its search to only | |
1586 | global variables in a single filename. All in all, only | |
1587 | searching the static block here seems best: it's correct and it's | |
1588 | cleanest. */ | |
1589 | ||
1590 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
1591 | issue here: if you usually search for global symbols in the | |
1592 | current file, then it would be slightly better to search the | |
1593 | current global block before searching all the symtabs. But there | |
1594 | are other factors that have a much greater effect on performance | |
1595 | than that one, so I don't think we should worry about that for | |
1596 | now. */ | |
1597 | ||
1598 | sym = lookup_symbol_static (name, linkage_name, block, domain, symtab); | |
1599 | if (sym != NULL) | |
1600 | return sym; | |
1601 | ||
3a40aaa0 | 1602 | return lookup_symbol_global (name, linkage_name, block, domain, symtab); |
5f9a71c3 DC |
1603 | } |
1604 | ||
1605 | /* Lookup a symbol in the static block associated to BLOCK, if there | |
1606 | is one; do nothing if BLOCK is NULL or a global block. */ | |
1607 | ||
1608 | struct symbol * | |
1609 | lookup_symbol_static (const char *name, | |
1610 | const char *linkage_name, | |
1611 | const struct block *block, | |
1612 | const domain_enum domain, | |
1613 | struct symtab **symtab) | |
1614 | { | |
1615 | const struct block *static_block = block_static_block (block); | |
1616 | ||
1617 | if (static_block != NULL) | |
1618 | return lookup_symbol_aux_block (name, linkage_name, static_block, | |
1619 | domain, symtab); | |
1620 | else | |
1621 | return NULL; | |
1622 | } | |
1623 | ||
1624 | /* Lookup a symbol in all files' global blocks (searching psymtabs if | |
1625 | necessary). */ | |
1626 | ||
1627 | struct symbol * | |
1628 | lookup_symbol_global (const char *name, | |
1629 | const char *linkage_name, | |
3a40aaa0 | 1630 | const struct block *block, |
5f9a71c3 DC |
1631 | const domain_enum domain, |
1632 | struct symtab **symtab) | |
1633 | { | |
3a40aaa0 UW |
1634 | struct symbol *sym = NULL; |
1635 | struct objfile *objfile = NULL; | |
1636 | ||
1637 | /* Call library-specific lookup procedure. */ | |
1638 | objfile = lookup_objfile_from_block (block); | |
1639 | if (objfile != NULL) | |
1640 | sym = solib_global_lookup (objfile, name, linkage_name, domain, symtab); | |
1641 | if (sym != NULL) | |
1642 | return sym; | |
5f9a71c3 DC |
1643 | |
1644 | sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, linkage_name, | |
1645 | domain, symtab); | |
1646 | if (sym != NULL) | |
1647 | return sym; | |
1648 | ||
1649 | return lookup_symbol_aux_psymtabs (GLOBAL_BLOCK, name, linkage_name, | |
1650 | domain, symtab); | |
1651 | } | |
1652 | ||
5eeb2539 AR |
1653 | int |
1654 | symbol_matches_domain (enum language symbol_language, | |
1655 | domain_enum symbol_domain, | |
1656 | domain_enum domain) | |
1657 | { | |
1658 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". | |
1659 | A Java class declaration also defines a typedef for the class. | |
1660 | Similarly, any Ada type declaration implicitly defines a typedef. */ | |
1661 | if (symbol_language == language_cplus | |
1662 | || symbol_language == language_java | |
1663 | || symbol_language == language_ada) | |
1664 | { | |
1665 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
1666 | && symbol_domain == STRUCT_DOMAIN) | |
1667 | return 1; | |
1668 | } | |
1669 | /* For all other languages, strict match is required. */ | |
1670 | return (symbol_domain == domain); | |
1671 | } | |
1672 | ||
3d4e8fd2 DC |
1673 | /* Look, in partial_symtab PST, for symbol whose natural name is NAME. |
1674 | If LINKAGE_NAME is non-NULL, check in addition that the symbol's | |
1675 | linkage name matches it. Check the global symbols if GLOBAL, the | |
1676 | static symbols if not */ | |
c906108c | 1677 | |
b6429628 | 1678 | struct partial_symbol * |
3d4e8fd2 DC |
1679 | lookup_partial_symbol (struct partial_symtab *pst, const char *name, |
1680 | const char *linkage_name, int global, | |
176620f1 | 1681 | domain_enum domain) |
c906108c | 1682 | { |
357e46e7 | 1683 | struct partial_symbol *temp; |
c906108c | 1684 | struct partial_symbol **start, **psym; |
38d49aff | 1685 | struct partial_symbol **top, **real_top, **bottom, **center; |
c906108c SS |
1686 | int length = (global ? pst->n_global_syms : pst->n_static_syms); |
1687 | int do_linear_search = 1; | |
357e46e7 | 1688 | |
c906108c SS |
1689 | if (length == 0) |
1690 | { | |
1691 | return (NULL); | |
1692 | } | |
c906108c SS |
1693 | start = (global ? |
1694 | pst->objfile->global_psymbols.list + pst->globals_offset : | |
c5aa993b | 1695 | pst->objfile->static_psymbols.list + pst->statics_offset); |
357e46e7 | 1696 | |
c5aa993b | 1697 | if (global) /* This means we can use a binary search. */ |
c906108c SS |
1698 | { |
1699 | do_linear_search = 0; | |
1700 | ||
1701 | /* Binary search. This search is guaranteed to end with center | |
0fe19209 DC |
1702 | pointing at the earliest partial symbol whose name might be |
1703 | correct. At that point *all* partial symbols with an | |
1704 | appropriate name will be checked against the correct | |
176620f1 | 1705 | domain. */ |
c906108c SS |
1706 | |
1707 | bottom = start; | |
1708 | top = start + length - 1; | |
38d49aff | 1709 | real_top = top; |
c906108c SS |
1710 | while (top > bottom) |
1711 | { | |
1712 | center = bottom + (top - bottom) / 2; | |
1713 | if (!(center < top)) | |
e2e0b3e5 | 1714 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 1715 | if (!do_linear_search |
357e46e7 | 1716 | && (SYMBOL_LANGUAGE (*center) == language_java)) |
c906108c SS |
1717 | { |
1718 | do_linear_search = 1; | |
1719 | } | |
4725b721 | 1720 | if (strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*center), name) >= 0) |
c906108c SS |
1721 | { |
1722 | top = center; | |
1723 | } | |
1724 | else | |
1725 | { | |
1726 | bottom = center + 1; | |
1727 | } | |
1728 | } | |
1729 | if (!(top == bottom)) | |
e2e0b3e5 | 1730 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
357e46e7 | 1731 | |
3d4e8fd2 DC |
1732 | while (top <= real_top |
1733 | && (linkage_name != NULL | |
1734 | ? strcmp (SYMBOL_LINKAGE_NAME (*top), linkage_name) == 0 | |
4725b721 | 1735 | : SYMBOL_MATCHES_SEARCH_NAME (*top,name))) |
c906108c | 1736 | { |
5eeb2539 AR |
1737 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*top), |
1738 | SYMBOL_DOMAIN (*top), domain)) | |
1739 | return (*top); | |
c5aa993b | 1740 | top++; |
c906108c SS |
1741 | } |
1742 | } | |
1743 | ||
1744 | /* Can't use a binary search or else we found during the binary search that | |
1745 | we should also do a linear search. */ | |
1746 | ||
1747 | if (do_linear_search) | |
357e46e7 | 1748 | { |
c906108c SS |
1749 | for (psym = start; psym < start + length; psym++) |
1750 | { | |
5eeb2539 AR |
1751 | if (symbol_matches_domain (SYMBOL_LANGUAGE (*psym), |
1752 | SYMBOL_DOMAIN (*psym), domain)) | |
c906108c | 1753 | { |
3d4e8fd2 DC |
1754 | if (linkage_name != NULL |
1755 | ? strcmp (SYMBOL_LINKAGE_NAME (*psym), linkage_name) == 0 | |
4725b721 | 1756 | : SYMBOL_MATCHES_SEARCH_NAME (*psym, name)) |
c906108c SS |
1757 | { |
1758 | return (*psym); | |
1759 | } | |
1760 | } | |
1761 | } | |
1762 | } | |
1763 | ||
1764 | return (NULL); | |
1765 | } | |
1766 | ||
176620f1 | 1767 | /* Look up a type named NAME in the struct_domain. The type returned |
b368761e DC |
1768 | must not be opaque -- i.e., must have at least one field |
1769 | defined. */ | |
c906108c | 1770 | |
b368761e DC |
1771 | struct type * |
1772 | lookup_transparent_type (const char *name) | |
1773 | { | |
1774 | return current_language->la_lookup_transparent_type (name); | |
1775 | } | |
c906108c | 1776 | |
b368761e DC |
1777 | /* The standard implementation of lookup_transparent_type. This code |
1778 | was modeled on lookup_symbol -- the parts not relevant to looking | |
1779 | up types were just left out. In particular it's assumed here that | |
1780 | types are available in struct_domain and only at file-static or | |
1781 | global blocks. */ | |
c906108c SS |
1782 | |
1783 | struct type * | |
b368761e | 1784 | basic_lookup_transparent_type (const char *name) |
c906108c | 1785 | { |
52f0bd74 AC |
1786 | struct symbol *sym; |
1787 | struct symtab *s = NULL; | |
1788 | struct partial_symtab *ps; | |
c906108c | 1789 | struct blockvector *bv; |
52f0bd74 AC |
1790 | struct objfile *objfile; |
1791 | struct block *block; | |
c906108c SS |
1792 | |
1793 | /* Now search all the global symbols. Do the symtab's first, then | |
1794 | check the psymtab's. If a psymtab indicates the existence | |
1795 | of the desired name as a global, then do psymtab-to-symtab | |
1796 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 1797 | |
11309657 | 1798 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1799 | { |
1800 | bv = BLOCKVECTOR (s); | |
1801 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
176620f1 | 1802 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1803 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1804 | { | |
1805 | return SYMBOL_TYPE (sym); | |
1806 | } | |
1807 | } | |
c906108c SS |
1808 | |
1809 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b | 1810 | { |
3d4e8fd2 | 1811 | if (!ps->readin && lookup_partial_symbol (ps, name, NULL, |
176620f1 | 1812 | 1, STRUCT_DOMAIN)) |
c5aa993b JM |
1813 | { |
1814 | s = PSYMTAB_TO_SYMTAB (ps); | |
1815 | bv = BLOCKVECTOR (s); | |
1816 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
176620f1 | 1817 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1818 | if (!sym) |
1819 | { | |
1820 | /* This shouldn't be necessary, but as a last resort | |
1821 | * try looking in the statics even though the psymtab | |
1822 | * claimed the symbol was global. It's possible that | |
1823 | * the psymtab gets it wrong in some cases. | |
1824 | */ | |
1825 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1826 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b | 1827 | if (!sym) |
8a3fe4f8 | 1828 | error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ |
c906108c | 1829 | %s may be an inlined function, or may be a template function\n\ |
8a3fe4f8 | 1830 | (if a template, try specifying an instantiation: %s<type>)."), |
c5aa993b JM |
1831 | name, ps->filename, name, name); |
1832 | } | |
1833 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1834 | return SYMBOL_TYPE (sym); | |
1835 | } | |
1836 | } | |
c906108c SS |
1837 | |
1838 | /* Now search the static file-level symbols. | |
1839 | Not strictly correct, but more useful than an error. | |
1840 | Do the symtab's first, then | |
1841 | check the psymtab's. If a psymtab indicates the existence | |
1842 | of the desired name as a file-level static, then do psymtab-to-symtab | |
1843 | conversion on the fly and return the found symbol. | |
1844 | */ | |
1845 | ||
11309657 | 1846 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1847 | { |
1848 | bv = BLOCKVECTOR (s); | |
1849 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1850 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1851 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1852 | { | |
1853 | return SYMBOL_TYPE (sym); | |
1854 | } | |
1855 | } | |
c906108c SS |
1856 | |
1857 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b | 1858 | { |
176620f1 | 1859 | if (!ps->readin && lookup_partial_symbol (ps, name, NULL, 0, STRUCT_DOMAIN)) |
c5aa993b JM |
1860 | { |
1861 | s = PSYMTAB_TO_SYMTAB (ps); | |
1862 | bv = BLOCKVECTOR (s); | |
1863 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
176620f1 | 1864 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b JM |
1865 | if (!sym) |
1866 | { | |
1867 | /* This shouldn't be necessary, but as a last resort | |
1868 | * try looking in the globals even though the psymtab | |
1869 | * claimed the symbol was static. It's possible that | |
1870 | * the psymtab gets it wrong in some cases. | |
1871 | */ | |
1872 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
176620f1 | 1873 | sym = lookup_block_symbol (block, name, NULL, STRUCT_DOMAIN); |
c5aa993b | 1874 | if (!sym) |
8a3fe4f8 | 1875 | error (_("Internal: static symbol `%s' found in %s psymtab but not in symtab.\n\ |
c906108c | 1876 | %s may be an inlined function, or may be a template function\n\ |
8a3fe4f8 | 1877 | (if a template, try specifying an instantiation: %s<type>)."), |
c5aa993b JM |
1878 | name, ps->filename, name, name); |
1879 | } | |
1880 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
1881 | return SYMBOL_TYPE (sym); | |
1882 | } | |
1883 | } | |
c906108c SS |
1884 | return (struct type *) 0; |
1885 | } | |
1886 | ||
1887 | ||
1888 | /* Find the psymtab containing main(). */ | |
1889 | /* FIXME: What about languages without main() or specially linked | |
1890 | executables that have no main() ? */ | |
1891 | ||
1892 | struct partial_symtab * | |
fba45db2 | 1893 | find_main_psymtab (void) |
c906108c | 1894 | { |
52f0bd74 AC |
1895 | struct partial_symtab *pst; |
1896 | struct objfile *objfile; | |
c906108c SS |
1897 | |
1898 | ALL_PSYMTABS (objfile, pst) | |
c5aa993b | 1899 | { |
176620f1 | 1900 | if (lookup_partial_symbol (pst, main_name (), NULL, 1, VAR_DOMAIN)) |
c5aa993b JM |
1901 | { |
1902 | return (pst); | |
1903 | } | |
1904 | } | |
c906108c SS |
1905 | return (NULL); |
1906 | } | |
1907 | ||
176620f1 | 1908 | /* Search BLOCK for symbol NAME in DOMAIN. |
c906108c SS |
1909 | |
1910 | Note that if NAME is the demangled form of a C++ symbol, we will fail | |
1911 | to find a match during the binary search of the non-encoded names, but | |
1912 | for now we don't worry about the slight inefficiency of looking for | |
1913 | a match we'll never find, since it will go pretty quick. Once the | |
1914 | binary search terminates, we drop through and do a straight linear | |
1bae87b9 AF |
1915 | search on the symbols. Each symbol which is marked as being a ObjC/C++ |
1916 | symbol (language_cplus or language_objc set) has both the encoded and | |
1917 | non-encoded names tested for a match. | |
3121eff0 | 1918 | |
5ad1c190 | 1919 | If LINKAGE_NAME is non-NULL, verify that any symbol we find has this |
3121eff0 DJ |
1920 | particular mangled name. |
1921 | */ | |
c906108c SS |
1922 | |
1923 | struct symbol * | |
aa1ee363 | 1924 | lookup_block_symbol (const struct block *block, const char *name, |
5ad1c190 | 1925 | const char *linkage_name, |
176620f1 | 1926 | const domain_enum domain) |
c906108c | 1927 | { |
de4f826b DC |
1928 | struct dict_iterator iter; |
1929 | struct symbol *sym; | |
c906108c | 1930 | |
de4f826b | 1931 | if (!BLOCK_FUNCTION (block)) |
261397f8 | 1932 | { |
de4f826b DC |
1933 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); |
1934 | sym != NULL; | |
1935 | sym = dict_iter_name_next (name, &iter)) | |
261397f8 | 1936 | { |
5eeb2539 AR |
1937 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1938 | SYMBOL_DOMAIN (sym), domain) | |
de4f826b DC |
1939 | && (linkage_name != NULL |
1940 | ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1)) | |
261397f8 DJ |
1941 | return sym; |
1942 | } | |
1943 | return NULL; | |
1944 | } | |
526e70c0 | 1945 | else |
c906108c | 1946 | { |
526e70c0 DC |
1947 | /* Note that parameter symbols do not always show up last in the |
1948 | list; this loop makes sure to take anything else other than | |
1949 | parameter symbols first; it only uses parameter symbols as a | |
1950 | last resort. Note that this only takes up extra computation | |
1951 | time on a match. */ | |
de4f826b DC |
1952 | |
1953 | struct symbol *sym_found = NULL; | |
1954 | ||
1955 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); | |
1956 | sym != NULL; | |
1957 | sym = dict_iter_name_next (name, &iter)) | |
c906108c | 1958 | { |
5eeb2539 AR |
1959 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
1960 | SYMBOL_DOMAIN (sym), domain) | |
de4f826b DC |
1961 | && (linkage_name != NULL |
1962 | ? strcmp (SYMBOL_LINKAGE_NAME (sym), linkage_name) == 0 : 1)) | |
c906108c | 1963 | { |
c906108c SS |
1964 | sym_found = sym; |
1965 | if (SYMBOL_CLASS (sym) != LOC_ARG && | |
1966 | SYMBOL_CLASS (sym) != LOC_LOCAL_ARG && | |
1967 | SYMBOL_CLASS (sym) != LOC_REF_ARG && | |
1968 | SYMBOL_CLASS (sym) != LOC_REGPARM && | |
1969 | SYMBOL_CLASS (sym) != LOC_REGPARM_ADDR && | |
4c2df51b DJ |
1970 | SYMBOL_CLASS (sym) != LOC_BASEREG_ARG && |
1971 | SYMBOL_CLASS (sym) != LOC_COMPUTED_ARG) | |
c906108c SS |
1972 | { |
1973 | break; | |
1974 | } | |
1975 | } | |
c906108c | 1976 | } |
de4f826b | 1977 | return (sym_found); /* Will be NULL if not found. */ |
c906108c | 1978 | } |
c906108c SS |
1979 | } |
1980 | ||
c906108c SS |
1981 | /* Find the symtab associated with PC and SECTION. Look through the |
1982 | psymtabs and read in another symtab if necessary. */ | |
1983 | ||
1984 | struct symtab * | |
fba45db2 | 1985 | find_pc_sect_symtab (CORE_ADDR pc, asection *section) |
c906108c | 1986 | { |
52f0bd74 | 1987 | struct block *b; |
c906108c | 1988 | struct blockvector *bv; |
52f0bd74 AC |
1989 | struct symtab *s = NULL; |
1990 | struct symtab *best_s = NULL; | |
1991 | struct partial_symtab *ps; | |
1992 | struct objfile *objfile; | |
c906108c | 1993 | CORE_ADDR distance = 0; |
8a48e967 DJ |
1994 | struct minimal_symbol *msymbol; |
1995 | ||
1996 | /* If we know that this is not a text address, return failure. This is | |
1997 | necessary because we loop based on the block's high and low code | |
1998 | addresses, which do not include the data ranges, and because | |
1999 | we call find_pc_sect_psymtab which has a similar restriction based | |
2000 | on the partial_symtab's texthigh and textlow. */ | |
2001 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
2002 | if (msymbol | |
2003 | && (msymbol->type == mst_data | |
2004 | || msymbol->type == mst_bss | |
2005 | || msymbol->type == mst_abs | |
2006 | || msymbol->type == mst_file_data | |
2007 | || msymbol->type == mst_file_bss)) | |
2008 | return NULL; | |
c906108c SS |
2009 | |
2010 | /* Search all symtabs for the one whose file contains our address, and which | |
2011 | is the smallest of all the ones containing the address. This is designed | |
2012 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
2013 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
2014 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
2015 | ||
2016 | This happens for native ecoff format, where code from included files | |
2017 | gets its own symtab. The symtab for the included file should have | |
2018 | been read in already via the dependency mechanism. | |
2019 | It might be swifter to create several symtabs with the same name | |
2020 | like xcoff does (I'm not sure). | |
2021 | ||
2022 | It also happens for objfiles that have their functions reordered. | |
2023 | For these, the symtab we are looking for is not necessarily read in. */ | |
2024 | ||
11309657 | 2025 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
2026 | { |
2027 | bv = BLOCKVECTOR (s); | |
2028 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 2029 | |
c5aa993b | 2030 | if (BLOCK_START (b) <= pc |
c5aa993b | 2031 | && BLOCK_END (b) > pc |
c5aa993b JM |
2032 | && (distance == 0 |
2033 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
2034 | { | |
2035 | /* For an objfile that has its functions reordered, | |
2036 | find_pc_psymtab will find the proper partial symbol table | |
2037 | and we simply return its corresponding symtab. */ | |
2038 | /* In order to better support objfiles that contain both | |
2039 | stabs and coff debugging info, we continue on if a psymtab | |
2040 | can't be found. */ | |
2041 | if ((objfile->flags & OBJF_REORDERED) && objfile->psymtabs) | |
2042 | { | |
2043 | ps = find_pc_sect_psymtab (pc, section); | |
2044 | if (ps) | |
2045 | return PSYMTAB_TO_SYMTAB (ps); | |
2046 | } | |
2047 | if (section != 0) | |
2048 | { | |
de4f826b | 2049 | struct dict_iterator iter; |
261397f8 | 2050 | struct symbol *sym = NULL; |
c906108c | 2051 | |
de4f826b | 2052 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2053 | { |
261397f8 | 2054 | fixup_symbol_section (sym, objfile); |
94277a38 | 2055 | if (matching_bfd_sections (SYMBOL_BFD_SECTION (sym), section)) |
c5aa993b JM |
2056 | break; |
2057 | } | |
de4f826b | 2058 | if (sym == NULL) |
c5aa993b JM |
2059 | continue; /* no symbol in this symtab matches section */ |
2060 | } | |
2061 | distance = BLOCK_END (b) - BLOCK_START (b); | |
2062 | best_s = s; | |
2063 | } | |
2064 | } | |
c906108c SS |
2065 | |
2066 | if (best_s != NULL) | |
c5aa993b | 2067 | return (best_s); |
c906108c SS |
2068 | |
2069 | s = NULL; | |
2070 | ps = find_pc_sect_psymtab (pc, section); | |
2071 | if (ps) | |
2072 | { | |
2073 | if (ps->readin) | |
2074 | /* Might want to error() here (in case symtab is corrupt and | |
2075 | will cause a core dump), but maybe we can successfully | |
2076 | continue, so let's not. */ | |
8a3fe4f8 AC |
2077 | warning (_("\ |
2078 | (Internal error: pc 0x%s in read in psymtab, but not in symtab.)\n"), | |
d730266b | 2079 | paddr_nz (pc)); |
c906108c SS |
2080 | s = PSYMTAB_TO_SYMTAB (ps); |
2081 | } | |
2082 | return (s); | |
2083 | } | |
2084 | ||
2085 | /* Find the symtab associated with PC. Look through the psymtabs and | |
2086 | read in another symtab if necessary. Backward compatibility, no section */ | |
2087 | ||
2088 | struct symtab * | |
fba45db2 | 2089 | find_pc_symtab (CORE_ADDR pc) |
c906108c SS |
2090 | { |
2091 | return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); | |
2092 | } | |
c906108c | 2093 | \f |
c5aa993b | 2094 | |
7e73cedf | 2095 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
2096 | Return a structure containing a symtab pointer, a line number, |
2097 | and a pc range for the entire source line. | |
2098 | The value's .pc field is NOT the specified pc. | |
2099 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
2100 | use the line that ends there. Otherwise, in that case, the line | |
2101 | that begins there is used. */ | |
2102 | ||
2103 | /* The big complication here is that a line may start in one file, and end just | |
2104 | before the start of another file. This usually occurs when you #include | |
2105 | code in the middle of a subroutine. To properly find the end of a line's PC | |
2106 | range, we must search all symtabs associated with this compilation unit, and | |
2107 | find the one whose first PC is closer than that of the next line in this | |
2108 | symtab. */ | |
2109 | ||
2110 | /* If it's worth the effort, we could be using a binary search. */ | |
2111 | ||
2112 | struct symtab_and_line | |
198beae2 | 2113 | find_pc_sect_line (CORE_ADDR pc, struct bfd_section *section, int notcurrent) |
c906108c SS |
2114 | { |
2115 | struct symtab *s; | |
52f0bd74 AC |
2116 | struct linetable *l; |
2117 | int len; | |
2118 | int i; | |
2119 | struct linetable_entry *item; | |
c906108c SS |
2120 | struct symtab_and_line val; |
2121 | struct blockvector *bv; | |
2122 | struct minimal_symbol *msymbol; | |
2123 | struct minimal_symbol *mfunsym; | |
2124 | ||
2125 | /* Info on best line seen so far, and where it starts, and its file. */ | |
2126 | ||
2127 | struct linetable_entry *best = NULL; | |
2128 | CORE_ADDR best_end = 0; | |
2129 | struct symtab *best_symtab = 0; | |
2130 | ||
2131 | /* Store here the first line number | |
2132 | of a file which contains the line at the smallest pc after PC. | |
2133 | If we don't find a line whose range contains PC, | |
2134 | we will use a line one less than this, | |
2135 | with a range from the start of that file to the first line's pc. */ | |
2136 | struct linetable_entry *alt = NULL; | |
2137 | struct symtab *alt_symtab = 0; | |
2138 | ||
2139 | /* Info on best line seen in this file. */ | |
2140 | ||
2141 | struct linetable_entry *prev; | |
2142 | ||
2143 | /* If this pc is not from the current frame, | |
2144 | it is the address of the end of a call instruction. | |
2145 | Quite likely that is the start of the following statement. | |
2146 | But what we want is the statement containing the instruction. | |
2147 | Fudge the pc to make sure we get that. */ | |
2148 | ||
fe39c653 | 2149 | init_sal (&val); /* initialize to zeroes */ |
c906108c | 2150 | |
b77b1eb7 JB |
2151 | /* It's tempting to assume that, if we can't find debugging info for |
2152 | any function enclosing PC, that we shouldn't search for line | |
2153 | number info, either. However, GAS can emit line number info for | |
2154 | assembly files --- very helpful when debugging hand-written | |
2155 | assembly code. In such a case, we'd have no debug info for the | |
2156 | function, but we would have line info. */ | |
648f4f79 | 2157 | |
c906108c SS |
2158 | if (notcurrent) |
2159 | pc -= 1; | |
2160 | ||
c5aa993b | 2161 | /* elz: added this because this function returned the wrong |
c906108c SS |
2162 | information if the pc belongs to a stub (import/export) |
2163 | to call a shlib function. This stub would be anywhere between | |
2164 | two functions in the target, and the line info was erroneously | |
2165 | taken to be the one of the line before the pc. | |
c5aa993b | 2166 | */ |
c906108c | 2167 | /* RT: Further explanation: |
c5aa993b | 2168 | |
c906108c SS |
2169 | * We have stubs (trampolines) inserted between procedures. |
2170 | * | |
2171 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
2172 | * exists in the main image. | |
2173 | * | |
2174 | * In the minimal symbol table, we have a bunch of symbols | |
2175 | * sorted by start address. The stubs are marked as "trampoline", | |
2176 | * the others appear as text. E.g.: | |
2177 | * | |
2178 | * Minimal symbol table for main image | |
2179 | * main: code for main (text symbol) | |
2180 | * shr1: stub (trampoline symbol) | |
2181 | * foo: code for foo (text symbol) | |
2182 | * ... | |
2183 | * Minimal symbol table for "shr1" image: | |
2184 | * ... | |
2185 | * shr1: code for shr1 (text symbol) | |
2186 | * ... | |
2187 | * | |
2188 | * So the code below is trying to detect if we are in the stub | |
2189 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
2190 | * and if found, do the symbolization from the real-code address | |
2191 | * rather than the stub address. | |
2192 | * | |
2193 | * Assumptions being made about the minimal symbol table: | |
2194 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
2195 | * if we're really in the trampoline. If we're beyond it (say | |
2196 | * we're in "foo" in the above example), it'll have a closer | |
2197 | * symbol (the "foo" text symbol for example) and will not | |
2198 | * return the trampoline. | |
2199 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
2200 | * corresponding to the trampoline, and whose address will | |
2201 | * be different than the trampoline address. I put in a sanity | |
2202 | * check for the address being the same, to avoid an | |
2203 | * infinite recursion. | |
2204 | */ | |
c5aa993b JM |
2205 | msymbol = lookup_minimal_symbol_by_pc (pc); |
2206 | if (msymbol != NULL) | |
c906108c | 2207 | if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) |
c5aa993b | 2208 | { |
2335f48e | 2209 | mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol), |
5520a790 | 2210 | NULL); |
c5aa993b JM |
2211 | if (mfunsym == NULL) |
2212 | /* I eliminated this warning since it is coming out | |
2213 | * in the following situation: | |
2214 | * gdb shmain // test program with shared libraries | |
2215 | * (gdb) break shr1 // function in shared lib | |
2216 | * Warning: In stub for ... | |
2217 | * In the above situation, the shared lib is not loaded yet, | |
2218 | * so of course we can't find the real func/line info, | |
2219 | * but the "break" still works, and the warning is annoying. | |
2220 | * So I commented out the warning. RT */ | |
2335f48e | 2221 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ; |
c5aa993b | 2222 | /* fall through */ |
82cf6c60 | 2223 | else if (SYMBOL_VALUE_ADDRESS (mfunsym) == SYMBOL_VALUE_ADDRESS (msymbol)) |
c5aa993b JM |
2224 | /* Avoid infinite recursion */ |
2225 | /* See above comment about why warning is commented out */ | |
2335f48e | 2226 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ; |
c5aa993b JM |
2227 | /* fall through */ |
2228 | else | |
82cf6c60 | 2229 | return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 2230 | } |
c906108c SS |
2231 | |
2232 | ||
2233 | s = find_pc_sect_symtab (pc, section); | |
2234 | if (!s) | |
2235 | { | |
2236 | /* if no symbol information, return previous pc */ | |
2237 | if (notcurrent) | |
2238 | pc++; | |
2239 | val.pc = pc; | |
2240 | return val; | |
2241 | } | |
2242 | ||
2243 | bv = BLOCKVECTOR (s); | |
2244 | ||
2245 | /* Look at all the symtabs that share this blockvector. | |
2246 | They all have the same apriori range, that we found was right; | |
2247 | but they have different line tables. */ | |
2248 | ||
2249 | for (; s && BLOCKVECTOR (s) == bv; s = s->next) | |
2250 | { | |
2251 | /* Find the best line in this symtab. */ | |
2252 | l = LINETABLE (s); | |
2253 | if (!l) | |
c5aa993b | 2254 | continue; |
c906108c SS |
2255 | len = l->nitems; |
2256 | if (len <= 0) | |
2257 | { | |
2258 | /* I think len can be zero if the symtab lacks line numbers | |
2259 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
2260 | I'm not sure which, and maybe it depends on the symbol | |
2261 | reader). */ | |
2262 | continue; | |
2263 | } | |
2264 | ||
2265 | prev = NULL; | |
2266 | item = l->item; /* Get first line info */ | |
2267 | ||
2268 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 2269 | If so, record this file, and its first line, as best alternate. */ |
c906108c SS |
2270 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
2271 | { | |
2272 | alt = item; | |
2273 | alt_symtab = s; | |
2274 | } | |
2275 | ||
2276 | for (i = 0; i < len; i++, item++) | |
2277 | { | |
2278 | /* Leave prev pointing to the linetable entry for the last line | |
2279 | that started at or before PC. */ | |
2280 | if (item->pc > pc) | |
2281 | break; | |
2282 | ||
2283 | prev = item; | |
2284 | } | |
2285 | ||
2286 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
2287 | item points at the next line. If we ran off the end of the linetable |
2288 | (pc >= start of the last line), then prev == item. If pc < start of | |
2289 | the first line, prev will not be set. */ | |
c906108c SS |
2290 | |
2291 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
2292 | If so, record this file, and its best line, as best so far. Don't |
2293 | save prev if it represents the end of a function (i.e. line number | |
2294 | 0) instead of a real line. */ | |
c906108c | 2295 | |
083ae935 | 2296 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
2297 | { |
2298 | best = prev; | |
2299 | best_symtab = s; | |
25d53da1 KB |
2300 | |
2301 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
2302 | if (best_end <= best->pc) | |
2303 | best_end = 0; | |
c906108c | 2304 | } |
25d53da1 KB |
2305 | |
2306 | /* If another line (denoted by ITEM) is in the linetable and its | |
2307 | PC is after BEST's PC, but before the current BEST_END, then | |
2308 | use ITEM's PC as the new best_end. */ | |
2309 | if (best && i < len && item->pc > best->pc | |
2310 | && (best_end == 0 || best_end > item->pc)) | |
2311 | best_end = item->pc; | |
c906108c SS |
2312 | } |
2313 | ||
2314 | if (!best_symtab) | |
2315 | { | |
e86e87f7 DJ |
2316 | /* If we didn't find any line number info, just return zeros. |
2317 | We used to return alt->line - 1 here, but that could be | |
2318 | anywhere; if we don't have line number info for this PC, | |
2319 | don't make some up. */ | |
2320 | val.pc = pc; | |
c906108c | 2321 | } |
e8717518 FF |
2322 | else if (best->line == 0) |
2323 | { | |
2324 | /* If our best fit is in a range of PC's for which no line | |
2325 | number info is available (line number is zero) then we didn't | |
2326 | find any valid line information. */ | |
2327 | val.pc = pc; | |
2328 | } | |
c906108c SS |
2329 | else |
2330 | { | |
2331 | val.symtab = best_symtab; | |
2332 | val.line = best->line; | |
2333 | val.pc = best->pc; | |
2334 | if (best_end && (!alt || best_end < alt->pc)) | |
2335 | val.end = best_end; | |
2336 | else if (alt) | |
2337 | val.end = alt->pc; | |
2338 | else | |
2339 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
2340 | } | |
2341 | val.section = section; | |
2342 | return val; | |
2343 | } | |
2344 | ||
2345 | /* Backward compatibility (no section) */ | |
2346 | ||
2347 | struct symtab_and_line | |
fba45db2 | 2348 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 2349 | { |
c5aa993b | 2350 | asection *section; |
c906108c SS |
2351 | |
2352 | section = find_pc_overlay (pc); | |
2353 | if (pc_in_unmapped_range (pc, section)) | |
2354 | pc = overlay_mapped_address (pc, section); | |
2355 | return find_pc_sect_line (pc, section, notcurrent); | |
2356 | } | |
c906108c | 2357 | \f |
c906108c SS |
2358 | /* Find line number LINE in any symtab whose name is the same as |
2359 | SYMTAB. | |
2360 | ||
2361 | If found, return the symtab that contains the linetable in which it was | |
2362 | found, set *INDEX to the index in the linetable of the best entry | |
2363 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
2364 | exact match. | |
2365 | ||
2366 | If not found, return NULL. */ | |
2367 | ||
50641945 | 2368 | struct symtab * |
fba45db2 | 2369 | find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) |
c906108c SS |
2370 | { |
2371 | int exact; | |
2372 | ||
2373 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
2374 | so far seen. */ | |
2375 | ||
2376 | int best_index; | |
2377 | struct linetable *best_linetable; | |
2378 | struct symtab *best_symtab; | |
2379 | ||
2380 | /* First try looking it up in the given symtab. */ | |
2381 | best_linetable = LINETABLE (symtab); | |
2382 | best_symtab = symtab; | |
2383 | best_index = find_line_common (best_linetable, line, &exact); | |
2384 | if (best_index < 0 || !exact) | |
2385 | { | |
2386 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
2387 | another symtab with the same name. In the case of xcoff, |
2388 | multiple csects for one source file (produced by IBM's FORTRAN | |
2389 | compiler) produce multiple symtabs (this is unavoidable | |
2390 | assuming csects can be at arbitrary places in memory and that | |
2391 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
2392 | |
2393 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
2394 | or 0 if none has been seen so far. |
2395 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
2396 | int best; |
2397 | ||
2398 | struct objfile *objfile; | |
2399 | struct symtab *s; | |
51432cca | 2400 | struct partial_symtab *p; |
c906108c SS |
2401 | |
2402 | if (best_index >= 0) | |
2403 | best = best_linetable->item[best_index].line; | |
2404 | else | |
2405 | best = 0; | |
2406 | ||
51432cca CES |
2407 | ALL_PSYMTABS (objfile, p) |
2408 | { | |
2409 | if (strcmp (symtab->filename, p->filename) != 0) | |
2410 | continue; | |
2411 | PSYMTAB_TO_SYMTAB (p); | |
2412 | } | |
2413 | ||
c906108c | 2414 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
2415 | { |
2416 | struct linetable *l; | |
2417 | int ind; | |
c906108c | 2418 | |
6314a349 | 2419 | if (strcmp (symtab->filename, s->filename) != 0) |
c5aa993b JM |
2420 | continue; |
2421 | l = LINETABLE (s); | |
2422 | ind = find_line_common (l, line, &exact); | |
2423 | if (ind >= 0) | |
2424 | { | |
2425 | if (exact) | |
2426 | { | |
2427 | best_index = ind; | |
2428 | best_linetable = l; | |
2429 | best_symtab = s; | |
2430 | goto done; | |
2431 | } | |
2432 | if (best == 0 || l->item[ind].line < best) | |
2433 | { | |
2434 | best = l->item[ind].line; | |
2435 | best_index = ind; | |
2436 | best_linetable = l; | |
2437 | best_symtab = s; | |
2438 | } | |
2439 | } | |
2440 | } | |
c906108c | 2441 | } |
c5aa993b | 2442 | done: |
c906108c SS |
2443 | if (best_index < 0) |
2444 | return NULL; | |
2445 | ||
2446 | if (index) | |
2447 | *index = best_index; | |
2448 | if (exact_match) | |
2449 | *exact_match = exact; | |
2450 | ||
2451 | return best_symtab; | |
2452 | } | |
2453 | \f | |
2454 | /* Set the PC value for a given source file and line number and return true. | |
2455 | Returns zero for invalid line number (and sets the PC to 0). | |
2456 | The source file is specified with a struct symtab. */ | |
2457 | ||
2458 | int | |
fba45db2 | 2459 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
2460 | { |
2461 | struct linetable *l; | |
2462 | int ind; | |
2463 | ||
2464 | *pc = 0; | |
2465 | if (symtab == 0) | |
2466 | return 0; | |
2467 | ||
2468 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
2469 | if (symtab != NULL) | |
2470 | { | |
2471 | l = LINETABLE (symtab); | |
2472 | *pc = l->item[ind].pc; | |
2473 | return 1; | |
2474 | } | |
2475 | else | |
2476 | return 0; | |
2477 | } | |
2478 | ||
2479 | /* Find the range of pc values in a line. | |
2480 | Store the starting pc of the line into *STARTPTR | |
2481 | and the ending pc (start of next line) into *ENDPTR. | |
2482 | Returns 1 to indicate success. | |
2483 | Returns 0 if could not find the specified line. */ | |
2484 | ||
2485 | int | |
fba45db2 KB |
2486 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
2487 | CORE_ADDR *endptr) | |
c906108c SS |
2488 | { |
2489 | CORE_ADDR startaddr; | |
2490 | struct symtab_and_line found_sal; | |
2491 | ||
2492 | startaddr = sal.pc; | |
c5aa993b | 2493 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
2494 | return 0; |
2495 | ||
2496 | /* This whole function is based on address. For example, if line 10 has | |
2497 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
2498 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
2499 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
2500 | This also insures that we never give a range like "starts at 0x134 | |
2501 | and ends at 0x12c". */ | |
2502 | ||
2503 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
2504 | if (found_sal.line != sal.line) | |
2505 | { | |
2506 | /* The specified line (sal) has zero bytes. */ | |
2507 | *startptr = found_sal.pc; | |
2508 | *endptr = found_sal.pc; | |
2509 | } | |
2510 | else | |
2511 | { | |
2512 | *startptr = found_sal.pc; | |
2513 | *endptr = found_sal.end; | |
2514 | } | |
2515 | return 1; | |
2516 | } | |
2517 | ||
2518 | /* Given a line table and a line number, return the index into the line | |
2519 | table for the pc of the nearest line whose number is >= the specified one. | |
2520 | Return -1 if none is found. The value is >= 0 if it is an index. | |
2521 | ||
2522 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
2523 | ||
2524 | static int | |
aa1ee363 | 2525 | find_line_common (struct linetable *l, int lineno, |
fba45db2 | 2526 | int *exact_match) |
c906108c | 2527 | { |
52f0bd74 AC |
2528 | int i; |
2529 | int len; | |
c906108c SS |
2530 | |
2531 | /* BEST is the smallest linenumber > LINENO so far seen, | |
2532 | or 0 if none has been seen so far. | |
2533 | BEST_INDEX identifies the item for it. */ | |
2534 | ||
2535 | int best_index = -1; | |
2536 | int best = 0; | |
2537 | ||
b7589f7d DJ |
2538 | *exact_match = 0; |
2539 | ||
c906108c SS |
2540 | if (lineno <= 0) |
2541 | return -1; | |
2542 | if (l == 0) | |
2543 | return -1; | |
2544 | ||
2545 | len = l->nitems; | |
2546 | for (i = 0; i < len; i++) | |
2547 | { | |
aa1ee363 | 2548 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
2549 | |
2550 | if (item->line == lineno) | |
2551 | { | |
2552 | /* Return the first (lowest address) entry which matches. */ | |
2553 | *exact_match = 1; | |
2554 | return i; | |
2555 | } | |
2556 | ||
2557 | if (item->line > lineno && (best == 0 || item->line < best)) | |
2558 | { | |
2559 | best = item->line; | |
2560 | best_index = i; | |
2561 | } | |
2562 | } | |
2563 | ||
2564 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
2565 | return best_index; |
2566 | } | |
2567 | ||
2568 | int | |
fba45db2 | 2569 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
2570 | { |
2571 | struct symtab_and_line sal; | |
2572 | sal = find_pc_line (pc, 0); | |
2573 | *startptr = sal.pc; | |
2574 | *endptr = sal.end; | |
2575 | return sal.symtab != 0; | |
2576 | } | |
2577 | ||
bccdca4a UW |
2578 | /* Given a function start address PC and SECTION, find the first |
2579 | address after the function prologue. */ | |
2580 | CORE_ADDR | |
2581 | find_function_start_pc (struct gdbarch *gdbarch, | |
2582 | CORE_ADDR pc, asection *section) | |
2583 | { | |
2584 | /* If the function is in an unmapped overlay, use its unmapped LMA address, | |
2585 | so that gdbarch_skip_prologue has something unique to work on. */ | |
2586 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
2587 | pc = overlay_unmapped_address (pc, section); | |
2588 | ||
2589 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
2590 | pc = gdbarch_skip_prologue (gdbarch, pc); | |
2591 | ||
2592 | /* For overlays, map pc back into its mapped VMA range. */ | |
2593 | pc = overlay_mapped_address (pc, section); | |
2594 | ||
2595 | return pc; | |
2596 | } | |
2597 | ||
c906108c SS |
2598 | /* Given a function symbol SYM, find the symtab and line for the start |
2599 | of the function. | |
2600 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
2601 | of real code inside the function. */ | |
2602 | ||
50641945 | 2603 | struct symtab_and_line |
fba45db2 | 2604 | find_function_start_sal (struct symbol *sym, int funfirstline) |
c906108c | 2605 | { |
bccdca4a UW |
2606 | struct block *block = SYMBOL_BLOCK_VALUE (sym); |
2607 | struct objfile *objfile = lookup_objfile_from_block (block); | |
2608 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2609 | ||
c906108c SS |
2610 | CORE_ADDR pc; |
2611 | struct symtab_and_line sal; | |
2612 | ||
bccdca4a UW |
2613 | pc = BLOCK_START (block); |
2614 | fixup_symbol_section (sym, objfile); | |
c906108c | 2615 | if (funfirstline) |
bccdca4a UW |
2616 | { |
2617 | /* Skip "first line" of function (which is actually its prologue). */ | |
2618 | pc = find_function_start_pc (gdbarch, pc, SYMBOL_BFD_SECTION (sym)); | |
c906108c SS |
2619 | } |
2620 | sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); | |
2621 | ||
a433963d | 2622 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next |
c906108c SS |
2623 | line is still part of the same function. */ |
2624 | if (sal.pc != pc | |
bccdca4a UW |
2625 | && BLOCK_START (block) <= sal.end |
2626 | && sal.end < BLOCK_END (block)) | |
c906108c SS |
2627 | { |
2628 | /* First pc of next line */ | |
2629 | pc = sal.end; | |
2630 | /* Recalculate the line number (might not be N+1). */ | |
2631 | sal = find_pc_sect_line (pc, SYMBOL_BFD_SECTION (sym), 0); | |
2632 | } | |
2633 | sal.pc = pc; | |
c906108c SS |
2634 | |
2635 | return sal; | |
2636 | } | |
50641945 | 2637 | |
c906108c SS |
2638 | /* If P is of the form "operator[ \t]+..." where `...' is |
2639 | some legitimate operator text, return a pointer to the | |
2640 | beginning of the substring of the operator text. | |
2641 | Otherwise, return "". */ | |
2642 | char * | |
fba45db2 | 2643 | operator_chars (char *p, char **end) |
c906108c SS |
2644 | { |
2645 | *end = ""; | |
2646 | if (strncmp (p, "operator", 8)) | |
2647 | return *end; | |
2648 | p += 8; | |
2649 | ||
2650 | /* Don't get faked out by `operator' being part of a longer | |
2651 | identifier. */ | |
c5aa993b | 2652 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
2653 | return *end; |
2654 | ||
2655 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
2656 | while (*p == ' ' || *p == '\t') | |
2657 | p++; | |
2658 | ||
2659 | /* Recognize 'operator TYPENAME'. */ | |
2660 | ||
c5aa993b | 2661 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 2662 | { |
aa1ee363 | 2663 | char *q = p + 1; |
c5aa993b | 2664 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
2665 | q++; |
2666 | *end = q; | |
2667 | return p; | |
2668 | } | |
2669 | ||
53e8ad3d MS |
2670 | while (*p) |
2671 | switch (*p) | |
2672 | { | |
2673 | case '\\': /* regexp quoting */ | |
2674 | if (p[1] == '*') | |
2675 | { | |
2676 | if (p[2] == '=') /* 'operator\*=' */ | |
2677 | *end = p + 3; | |
2678 | else /* 'operator\*' */ | |
2679 | *end = p + 2; | |
2680 | return p; | |
2681 | } | |
2682 | else if (p[1] == '[') | |
2683 | { | |
2684 | if (p[2] == ']') | |
8a3fe4f8 | 2685 | error (_("mismatched quoting on brackets, try 'operator\\[\\]'")); |
53e8ad3d MS |
2686 | else if (p[2] == '\\' && p[3] == ']') |
2687 | { | |
2688 | *end = p + 4; /* 'operator\[\]' */ | |
2689 | return p; | |
2690 | } | |
2691 | else | |
8a3fe4f8 | 2692 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d MS |
2693 | } |
2694 | else | |
2695 | { | |
2696 | /* Gratuitous qoute: skip it and move on. */ | |
2697 | p++; | |
2698 | continue; | |
2699 | } | |
2700 | break; | |
2701 | case '!': | |
2702 | case '=': | |
2703 | case '*': | |
2704 | case '/': | |
2705 | case '%': | |
2706 | case '^': | |
2707 | if (p[1] == '=') | |
2708 | *end = p + 2; | |
2709 | else | |
2710 | *end = p + 1; | |
2711 | return p; | |
2712 | case '<': | |
2713 | case '>': | |
2714 | case '+': | |
2715 | case '-': | |
2716 | case '&': | |
2717 | case '|': | |
2718 | if (p[0] == '-' && p[1] == '>') | |
2719 | { | |
2720 | /* Struct pointer member operator 'operator->'. */ | |
2721 | if (p[2] == '*') | |
2722 | { | |
2723 | *end = p + 3; /* 'operator->*' */ | |
2724 | return p; | |
2725 | } | |
2726 | else if (p[2] == '\\') | |
2727 | { | |
2728 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
2729 | return p; | |
2730 | } | |
2731 | else | |
2732 | { | |
2733 | *end = p + 2; /* 'operator->' */ | |
2734 | return p; | |
2735 | } | |
2736 | } | |
2737 | if (p[1] == '=' || p[1] == p[0]) | |
2738 | *end = p + 2; | |
2739 | else | |
2740 | *end = p + 1; | |
2741 | return p; | |
2742 | case '~': | |
2743 | case ',': | |
c5aa993b | 2744 | *end = p + 1; |
53e8ad3d MS |
2745 | return p; |
2746 | case '(': | |
2747 | if (p[1] != ')') | |
8a3fe4f8 | 2748 | error (_("`operator ()' must be specified without whitespace in `()'")); |
c5aa993b | 2749 | *end = p + 2; |
53e8ad3d MS |
2750 | return p; |
2751 | case '?': | |
2752 | if (p[1] != ':') | |
8a3fe4f8 | 2753 | error (_("`operator ?:' must be specified without whitespace in `?:'")); |
53e8ad3d MS |
2754 | *end = p + 2; |
2755 | return p; | |
2756 | case '[': | |
2757 | if (p[1] != ']') | |
8a3fe4f8 | 2758 | error (_("`operator []' must be specified without whitespace in `[]'")); |
53e8ad3d MS |
2759 | *end = p + 2; |
2760 | return p; | |
2761 | default: | |
8a3fe4f8 | 2762 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
2763 | break; |
2764 | } | |
2765 | ||
c906108c SS |
2766 | *end = ""; |
2767 | return *end; | |
2768 | } | |
c906108c | 2769 | \f |
c5aa993b | 2770 | |
c94fdfd0 EZ |
2771 | /* If FILE is not already in the table of files, return zero; |
2772 | otherwise return non-zero. Optionally add FILE to the table if ADD | |
2773 | is non-zero. If *FIRST is non-zero, forget the old table | |
2774 | contents. */ | |
2775 | static int | |
2776 | filename_seen (const char *file, int add, int *first) | |
c906108c | 2777 | { |
c94fdfd0 EZ |
2778 | /* Table of files seen so far. */ |
2779 | static const char **tab = NULL; | |
c906108c SS |
2780 | /* Allocated size of tab in elements. |
2781 | Start with one 256-byte block (when using GNU malloc.c). | |
2782 | 24 is the malloc overhead when range checking is in effect. */ | |
2783 | static int tab_alloc_size = (256 - 24) / sizeof (char *); | |
2784 | /* Current size of tab in elements. */ | |
2785 | static int tab_cur_size; | |
c94fdfd0 | 2786 | const char **p; |
c906108c SS |
2787 | |
2788 | if (*first) | |
2789 | { | |
2790 | if (tab == NULL) | |
c94fdfd0 | 2791 | tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab)); |
c906108c SS |
2792 | tab_cur_size = 0; |
2793 | } | |
2794 | ||
c94fdfd0 | 2795 | /* Is FILE in tab? */ |
c906108c | 2796 | for (p = tab; p < tab + tab_cur_size; p++) |
c94fdfd0 EZ |
2797 | if (strcmp (*p, file) == 0) |
2798 | return 1; | |
2799 | ||
2800 | /* No; maybe add it to tab. */ | |
2801 | if (add) | |
c906108c | 2802 | { |
c94fdfd0 EZ |
2803 | if (tab_cur_size == tab_alloc_size) |
2804 | { | |
2805 | tab_alloc_size *= 2; | |
2806 | tab = (const char **) xrealloc ((char *) tab, | |
2807 | tab_alloc_size * sizeof (*tab)); | |
2808 | } | |
2809 | tab[tab_cur_size++] = file; | |
c906108c | 2810 | } |
c906108c | 2811 | |
c94fdfd0 EZ |
2812 | return 0; |
2813 | } | |
2814 | ||
2815 | /* Slave routine for sources_info. Force line breaks at ,'s. | |
2816 | NAME is the name to print and *FIRST is nonzero if this is the first | |
2817 | name printed. Set *FIRST to zero. */ | |
2818 | static void | |
d092d1a2 | 2819 | output_source_filename (const char *name, int *first) |
c94fdfd0 EZ |
2820 | { |
2821 | /* Since a single source file can result in several partial symbol | |
2822 | tables, we need to avoid printing it more than once. Note: if | |
2823 | some of the psymtabs are read in and some are not, it gets | |
2824 | printed both under "Source files for which symbols have been | |
2825 | read" and "Source files for which symbols will be read in on | |
2826 | demand". I consider this a reasonable way to deal with the | |
2827 | situation. I'm not sure whether this can also happen for | |
2828 | symtabs; it doesn't hurt to check. */ | |
2829 | ||
2830 | /* Was NAME already seen? */ | |
2831 | if (filename_seen (name, 1, first)) | |
2832 | { | |
2833 | /* Yes; don't print it again. */ | |
2834 | return; | |
2835 | } | |
2836 | /* No; print it and reset *FIRST. */ | |
c906108c SS |
2837 | if (*first) |
2838 | { | |
2839 | *first = 0; | |
2840 | } | |
2841 | else | |
2842 | { | |
2843 | printf_filtered (", "); | |
2844 | } | |
2845 | ||
2846 | wrap_here (""); | |
2847 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 2848 | } |
c906108c SS |
2849 | |
2850 | static void | |
fba45db2 | 2851 | sources_info (char *ignore, int from_tty) |
c906108c | 2852 | { |
52f0bd74 AC |
2853 | struct symtab *s; |
2854 | struct partial_symtab *ps; | |
2855 | struct objfile *objfile; | |
c906108c | 2856 | int first; |
c5aa993b | 2857 | |
c906108c SS |
2858 | if (!have_full_symbols () && !have_partial_symbols ()) |
2859 | { | |
8a3fe4f8 | 2860 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 2861 | } |
c5aa993b | 2862 | |
c906108c SS |
2863 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
2864 | ||
2865 | first = 1; | |
2866 | ALL_SYMTABS (objfile, s) | |
c5aa993b | 2867 | { |
d092d1a2 DJ |
2868 | const char *fullname = symtab_to_fullname (s); |
2869 | output_source_filename (fullname ? fullname : s->filename, &first); | |
c5aa993b | 2870 | } |
c906108c | 2871 | printf_filtered ("\n\n"); |
c5aa993b | 2872 | |
c906108c SS |
2873 | printf_filtered ("Source files for which symbols will be read in on demand:\n\n"); |
2874 | ||
2875 | first = 1; | |
2876 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
2877 | { |
2878 | if (!ps->readin) | |
2879 | { | |
d092d1a2 DJ |
2880 | const char *fullname = psymtab_to_fullname (ps); |
2881 | output_source_filename (fullname ? fullname : ps->filename, &first); | |
c5aa993b JM |
2882 | } |
2883 | } | |
c906108c SS |
2884 | printf_filtered ("\n"); |
2885 | } | |
2886 | ||
2887 | static int | |
fd118b61 | 2888 | file_matches (char *file, char *files[], int nfiles) |
c906108c SS |
2889 | { |
2890 | int i; | |
2891 | ||
2892 | if (file != NULL && nfiles != 0) | |
2893 | { | |
2894 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 2895 | { |
31889e00 | 2896 | if (strcmp (files[i], lbasename (file)) == 0) |
c5aa993b JM |
2897 | return 1; |
2898 | } | |
c906108c SS |
2899 | } |
2900 | else if (nfiles == 0) | |
2901 | return 1; | |
2902 | return 0; | |
2903 | } | |
2904 | ||
2905 | /* Free any memory associated with a search. */ | |
2906 | void | |
fba45db2 | 2907 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
2908 | { |
2909 | struct symbol_search *p; | |
2910 | struct symbol_search *next; | |
2911 | ||
2912 | for (p = symbols; p != NULL; p = next) | |
2913 | { | |
2914 | next = p->next; | |
b8c9b27d | 2915 | xfree (p); |
c906108c SS |
2916 | } |
2917 | } | |
2918 | ||
5bd98722 AC |
2919 | static void |
2920 | do_free_search_symbols_cleanup (void *symbols) | |
2921 | { | |
2922 | free_search_symbols (symbols); | |
2923 | } | |
2924 | ||
2925 | struct cleanup * | |
2926 | make_cleanup_free_search_symbols (struct symbol_search *symbols) | |
2927 | { | |
2928 | return make_cleanup (do_free_search_symbols_cleanup, symbols); | |
2929 | } | |
2930 | ||
434d2d4f DJ |
2931 | /* Helper function for sort_search_symbols and qsort. Can only |
2932 | sort symbols, not minimal symbols. */ | |
2933 | static int | |
2934 | compare_search_syms (const void *sa, const void *sb) | |
2935 | { | |
2936 | struct symbol_search **sym_a = (struct symbol_search **) sa; | |
2937 | struct symbol_search **sym_b = (struct symbol_search **) sb; | |
2938 | ||
de5ad195 DC |
2939 | return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol), |
2940 | SYMBOL_PRINT_NAME ((*sym_b)->symbol)); | |
434d2d4f DJ |
2941 | } |
2942 | ||
2943 | /* Sort the ``nfound'' symbols in the list after prevtail. Leave | |
2944 | prevtail where it is, but update its next pointer to point to | |
2945 | the first of the sorted symbols. */ | |
2946 | static struct symbol_search * | |
2947 | sort_search_symbols (struct symbol_search *prevtail, int nfound) | |
2948 | { | |
2949 | struct symbol_search **symbols, *symp, *old_next; | |
2950 | int i; | |
2951 | ||
2952 | symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *) | |
2953 | * nfound); | |
2954 | symp = prevtail->next; | |
2955 | for (i = 0; i < nfound; i++) | |
2956 | { | |
2957 | symbols[i] = symp; | |
2958 | symp = symp->next; | |
2959 | } | |
2960 | /* Generally NULL. */ | |
2961 | old_next = symp; | |
2962 | ||
2963 | qsort (symbols, nfound, sizeof (struct symbol_search *), | |
2964 | compare_search_syms); | |
2965 | ||
2966 | symp = prevtail; | |
2967 | for (i = 0; i < nfound; i++) | |
2968 | { | |
2969 | symp->next = symbols[i]; | |
2970 | symp = symp->next; | |
2971 | } | |
2972 | symp->next = old_next; | |
2973 | ||
8ed32cc0 | 2974 | xfree (symbols); |
434d2d4f DJ |
2975 | return symp; |
2976 | } | |
5bd98722 | 2977 | |
c906108c SS |
2978 | /* Search the symbol table for matches to the regular expression REGEXP, |
2979 | returning the results in *MATCHES. | |
2980 | ||
2981 | Only symbols of KIND are searched: | |
176620f1 EZ |
2982 | FUNCTIONS_DOMAIN - search all functions |
2983 | TYPES_DOMAIN - search all type names | |
2984 | METHODS_DOMAIN - search all methods NOT IMPLEMENTED | |
2985 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, | |
c5aa993b | 2986 | and constants (enums) |
c906108c SS |
2987 | |
2988 | free_search_symbols should be called when *MATCHES is no longer needed. | |
434d2d4f DJ |
2989 | |
2990 | The results are sorted locally; each symtab's global and static blocks are | |
2991 | separately alphabetized. | |
c5aa993b | 2992 | */ |
c906108c | 2993 | void |
176620f1 | 2994 | search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[], |
fd118b61 | 2995 | struct symbol_search **matches) |
c906108c | 2996 | { |
52f0bd74 AC |
2997 | struct symtab *s; |
2998 | struct partial_symtab *ps; | |
2999 | struct blockvector *bv; | |
52f0bd74 AC |
3000 | struct block *b; |
3001 | int i = 0; | |
de4f826b | 3002 | struct dict_iterator iter; |
52f0bd74 | 3003 | struct symbol *sym; |
c906108c SS |
3004 | struct partial_symbol **psym; |
3005 | struct objfile *objfile; | |
3006 | struct minimal_symbol *msymbol; | |
3007 | char *val; | |
3008 | int found_misc = 0; | |
3009 | static enum minimal_symbol_type types[] | |
c5aa993b JM |
3010 | = |
3011 | {mst_data, mst_text, mst_abs, mst_unknown}; | |
c906108c | 3012 | static enum minimal_symbol_type types2[] |
c5aa993b JM |
3013 | = |
3014 | {mst_bss, mst_file_text, mst_abs, mst_unknown}; | |
c906108c | 3015 | static enum minimal_symbol_type types3[] |
c5aa993b JM |
3016 | = |
3017 | {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown}; | |
c906108c | 3018 | static enum minimal_symbol_type types4[] |
c5aa993b JM |
3019 | = |
3020 | {mst_file_bss, mst_text, mst_abs, mst_unknown}; | |
c906108c SS |
3021 | enum minimal_symbol_type ourtype; |
3022 | enum minimal_symbol_type ourtype2; | |
3023 | enum minimal_symbol_type ourtype3; | |
3024 | enum minimal_symbol_type ourtype4; | |
3025 | struct symbol_search *sr; | |
3026 | struct symbol_search *psr; | |
3027 | struct symbol_search *tail; | |
3028 | struct cleanup *old_chain = NULL; | |
3029 | ||
176620f1 | 3030 | if (kind < VARIABLES_DOMAIN) |
8a3fe4f8 | 3031 | error (_("must search on specific domain")); |
c906108c | 3032 | |
176620f1 EZ |
3033 | ourtype = types[(int) (kind - VARIABLES_DOMAIN)]; |
3034 | ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)]; | |
3035 | ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)]; | |
3036 | ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)]; | |
c906108c SS |
3037 | |
3038 | sr = *matches = NULL; | |
3039 | tail = NULL; | |
3040 | ||
3041 | if (regexp != NULL) | |
3042 | { | |
3043 | /* Make sure spacing is right for C++ operators. | |
3044 | This is just a courtesy to make the matching less sensitive | |
3045 | to how many spaces the user leaves between 'operator' | |
3046 | and <TYPENAME> or <OPERATOR>. */ | |
3047 | char *opend; | |
3048 | char *opname = operator_chars (regexp, &opend); | |
3049 | if (*opname) | |
c5aa993b JM |
3050 | { |
3051 | int fix = -1; /* -1 means ok; otherwise number of spaces needed. */ | |
3052 | if (isalpha (*opname) || *opname == '_' || *opname == '$') | |
3053 | { | |
3054 | /* There should 1 space between 'operator' and 'TYPENAME'. */ | |
3055 | if (opname[-1] != ' ' || opname[-2] == ' ') | |
3056 | fix = 1; | |
3057 | } | |
3058 | else | |
3059 | { | |
3060 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ | |
3061 | if (opname[-1] == ' ') | |
3062 | fix = 0; | |
3063 | } | |
3064 | /* If wrong number of spaces, fix it. */ | |
3065 | if (fix >= 0) | |
3066 | { | |
045f55a6 | 3067 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
c5aa993b JM |
3068 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
3069 | regexp = tmp; | |
3070 | } | |
3071 | } | |
3072 | ||
c906108c | 3073 | if (0 != (val = re_comp (regexp))) |
8a3fe4f8 | 3074 | error (_("Invalid regexp (%s): %s"), val, regexp); |
c906108c SS |
3075 | } |
3076 | ||
3077 | /* Search through the partial symtabs *first* for all symbols | |
3078 | matching the regexp. That way we don't have to reproduce all of | |
3079 | the machinery below. */ | |
3080 | ||
3081 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
3082 | { |
3083 | struct partial_symbol **bound, **gbound, **sbound; | |
3084 | int keep_going = 1; | |
3085 | ||
3086 | if (ps->readin) | |
3087 | continue; | |
3088 | ||
3089 | gbound = objfile->global_psymbols.list + ps->globals_offset + ps->n_global_syms; | |
3090 | sbound = objfile->static_psymbols.list + ps->statics_offset + ps->n_static_syms; | |
3091 | bound = gbound; | |
3092 | ||
3093 | /* Go through all of the symbols stored in a partial | |
3094 | symtab in one loop. */ | |
3095 | psym = objfile->global_psymbols.list + ps->globals_offset; | |
3096 | while (keep_going) | |
3097 | { | |
3098 | if (psym >= bound) | |
3099 | { | |
3100 | if (bound == gbound && ps->n_static_syms != 0) | |
3101 | { | |
3102 | psym = objfile->static_psymbols.list + ps->statics_offset; | |
3103 | bound = sbound; | |
3104 | } | |
3105 | else | |
3106 | keep_going = 0; | |
3107 | continue; | |
3108 | } | |
3109 | else | |
3110 | { | |
3111 | QUIT; | |
3112 | ||
3113 | /* If it would match (logic taken from loop below) | |
cb1df416 DJ |
3114 | load the file and go on to the next one. We check the |
3115 | filename here, but that's a bit bogus: we don't know | |
3116 | what file it really comes from until we have full | |
3117 | symtabs. The symbol might be in a header file included by | |
3118 | this psymtab. This only affects Insight. */ | |
c5aa993b | 3119 | if (file_matches (ps->filename, files, nfiles) |
25120b0d DC |
3120 | && ((regexp == NULL |
3121 | || re_exec (SYMBOL_NATURAL_NAME (*psym)) != 0) | |
176620f1 | 3122 | && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (*psym) != LOC_TYPEDEF |
c5aa993b | 3123 | && SYMBOL_CLASS (*psym) != LOC_BLOCK) |
176620f1 EZ |
3124 | || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK) |
3125 | || (kind == TYPES_DOMAIN && SYMBOL_CLASS (*psym) == LOC_TYPEDEF) | |
3126 | || (kind == METHODS_DOMAIN && SYMBOL_CLASS (*psym) == LOC_BLOCK)))) | |
c5aa993b JM |
3127 | { |
3128 | PSYMTAB_TO_SYMTAB (ps); | |
3129 | keep_going = 0; | |
3130 | } | |
3131 | } | |
3132 | psym++; | |
3133 | } | |
3134 | } | |
c906108c SS |
3135 | |
3136 | /* Here, we search through the minimal symbol tables for functions | |
3137 | and variables that match, and force their symbols to be read. | |
3138 | This is in particular necessary for demangled variable names, | |
3139 | which are no longer put into the partial symbol tables. | |
3140 | The symbol will then be found during the scan of symtabs below. | |
3141 | ||
3142 | For functions, find_pc_symtab should succeed if we have debug info | |
3143 | for the function, for variables we have to call lookup_symbol | |
3144 | to determine if the variable has debug info. | |
3145 | If the lookup fails, set found_misc so that we will rescan to print | |
3146 | any matching symbols without debug info. | |
c5aa993b | 3147 | */ |
c906108c | 3148 | |
176620f1 | 3149 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
3150 | { |
3151 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3152 | { |
3153 | if (MSYMBOL_TYPE (msymbol) == ourtype || | |
3154 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3155 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3156 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3157 | { | |
25120b0d DC |
3158 | if (regexp == NULL |
3159 | || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0) | |
c5aa993b JM |
3160 | { |
3161 | if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) | |
3162 | { | |
b1262a02 DC |
3163 | /* FIXME: carlton/2003-02-04: Given that the |
3164 | semantics of lookup_symbol keeps on changing | |
3165 | slightly, it would be a nice idea if we had a | |
3166 | function lookup_symbol_minsym that found the | |
3167 | symbol associated to a given minimal symbol (if | |
3168 | any). */ | |
176620f1 | 3169 | if (kind == FUNCTIONS_DOMAIN |
2335f48e | 3170 | || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
b1262a02 | 3171 | (struct block *) NULL, |
176620f1 | 3172 | VAR_DOMAIN, |
53c5240f PA |
3173 | 0, (struct symtab **) NULL) |
3174 | == NULL) | |
b1262a02 | 3175 | found_misc = 1; |
c5aa993b JM |
3176 | } |
3177 | } | |
3178 | } | |
3179 | } | |
c906108c SS |
3180 | } |
3181 | ||
11309657 | 3182 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3183 | { |
3184 | bv = BLOCKVECTOR (s); | |
c5aa993b JM |
3185 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
3186 | { | |
434d2d4f DJ |
3187 | struct symbol_search *prevtail = tail; |
3188 | int nfound = 0; | |
c5aa993b | 3189 | b = BLOCKVECTOR_BLOCK (bv, i); |
de4f826b | 3190 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3191 | { |
cb1df416 | 3192 | struct symtab *real_symtab = SYMBOL_SYMTAB (sym); |
c5aa993b | 3193 | QUIT; |
cb1df416 DJ |
3194 | |
3195 | if (file_matches (real_symtab->filename, files, nfiles) | |
25120b0d DC |
3196 | && ((regexp == NULL |
3197 | || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0) | |
176620f1 | 3198 | && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF |
c5aa993b JM |
3199 | && SYMBOL_CLASS (sym) != LOC_BLOCK |
3200 | && SYMBOL_CLASS (sym) != LOC_CONST) | |
176620f1 EZ |
3201 | || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK) |
3202 | || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
3203 | || (kind == METHODS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK)))) | |
c5aa993b JM |
3204 | { |
3205 | /* match */ | |
3206 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
3207 | psr->block = i; | |
cb1df416 | 3208 | psr->symtab = real_symtab; |
c5aa993b JM |
3209 | psr->symbol = sym; |
3210 | psr->msymbol = NULL; | |
3211 | psr->next = NULL; | |
3212 | if (tail == NULL) | |
434d2d4f | 3213 | sr = psr; |
c5aa993b JM |
3214 | else |
3215 | tail->next = psr; | |
3216 | tail = psr; | |
434d2d4f DJ |
3217 | nfound ++; |
3218 | } | |
3219 | } | |
3220 | if (nfound > 0) | |
3221 | { | |
3222 | if (prevtail == NULL) | |
3223 | { | |
3224 | struct symbol_search dummy; | |
3225 | ||
3226 | dummy.next = sr; | |
3227 | tail = sort_search_symbols (&dummy, nfound); | |
3228 | sr = dummy.next; | |
3229 | ||
3230 | old_chain = make_cleanup_free_search_symbols (sr); | |
c5aa993b | 3231 | } |
434d2d4f DJ |
3232 | else |
3233 | tail = sort_search_symbols (prevtail, nfound); | |
c5aa993b JM |
3234 | } |
3235 | } | |
c5aa993b | 3236 | } |
c906108c SS |
3237 | |
3238 | /* If there are no eyes, avoid all contact. I mean, if there are | |
3239 | no debug symbols, then print directly from the msymbol_vector. */ | |
3240 | ||
176620f1 | 3241 | if (found_misc || kind != FUNCTIONS_DOMAIN) |
c906108c SS |
3242 | { |
3243 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3244 | { |
3245 | if (MSYMBOL_TYPE (msymbol) == ourtype || | |
3246 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3247 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3248 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3249 | { | |
25120b0d DC |
3250 | if (regexp == NULL |
3251 | || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0) | |
c5aa993b JM |
3252 | { |
3253 | /* Functions: Look up by address. */ | |
176620f1 | 3254 | if (kind != FUNCTIONS_DOMAIN || |
c5aa993b JM |
3255 | (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) |
3256 | { | |
3257 | /* Variables/Absolutes: Look up by name */ | |
2335f48e | 3258 | if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
176620f1 | 3259 | (struct block *) NULL, VAR_DOMAIN, |
c5aa993b JM |
3260 | 0, (struct symtab **) NULL) == NULL) |
3261 | { | |
3262 | /* match */ | |
3263 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
3264 | psr->block = i; | |
3265 | psr->msymbol = msymbol; | |
3266 | psr->symtab = NULL; | |
3267 | psr->symbol = NULL; | |
3268 | psr->next = NULL; | |
3269 | if (tail == NULL) | |
3270 | { | |
3271 | sr = psr; | |
5bd98722 | 3272 | old_chain = make_cleanup_free_search_symbols (sr); |
c5aa993b JM |
3273 | } |
3274 | else | |
3275 | tail->next = psr; | |
3276 | tail = psr; | |
3277 | } | |
3278 | } | |
3279 | } | |
3280 | } | |
3281 | } | |
c906108c SS |
3282 | } |
3283 | ||
3284 | *matches = sr; | |
3285 | if (sr != NULL) | |
3286 | discard_cleanups (old_chain); | |
3287 | } | |
3288 | ||
3289 | /* Helper function for symtab_symbol_info, this function uses | |
3290 | the data returned from search_symbols() to print information | |
3291 | regarding the match to gdb_stdout. | |
c5aa993b | 3292 | */ |
c906108c | 3293 | static void |
176620f1 | 3294 | print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym, |
fba45db2 | 3295 | int block, char *last) |
c906108c SS |
3296 | { |
3297 | if (last == NULL || strcmp (last, s->filename) != 0) | |
3298 | { | |
3299 | fputs_filtered ("\nFile ", gdb_stdout); | |
3300 | fputs_filtered (s->filename, gdb_stdout); | |
3301 | fputs_filtered (":\n", gdb_stdout); | |
3302 | } | |
3303 | ||
176620f1 | 3304 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 3305 | printf_filtered ("static "); |
c5aa993b | 3306 | |
c906108c | 3307 | /* Typedef that is not a C++ class */ |
176620f1 EZ |
3308 | if (kind == TYPES_DOMAIN |
3309 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 3310 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c906108c | 3311 | /* variable, func, or typedef-that-is-c++-class */ |
176620f1 EZ |
3312 | else if (kind < TYPES_DOMAIN || |
3313 | (kind == TYPES_DOMAIN && | |
3314 | SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
3315 | { |
3316 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 3317 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 3318 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 3319 | gdb_stdout, 0); |
c906108c SS |
3320 | |
3321 | printf_filtered (";\n"); | |
3322 | } | |
c906108c SS |
3323 | } |
3324 | ||
3325 | /* This help function for symtab_symbol_info() prints information | |
3326 | for non-debugging symbols to gdb_stdout. | |
c5aa993b | 3327 | */ |
c906108c | 3328 | static void |
fba45db2 | 3329 | print_msymbol_info (struct minimal_symbol *msymbol) |
c906108c | 3330 | { |
3ac4495a MS |
3331 | char *tmp; |
3332 | ||
17a912b6 | 3333 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
bb599908 PH |
3334 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol) |
3335 | & (CORE_ADDR) 0xffffffff, | |
3336 | 8); | |
3ac4495a | 3337 | else |
bb599908 PH |
3338 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol), |
3339 | 16); | |
3ac4495a | 3340 | printf_filtered ("%s %s\n", |
de5ad195 | 3341 | tmp, SYMBOL_PRINT_NAME (msymbol)); |
c906108c SS |
3342 | } |
3343 | ||
3344 | /* This is the guts of the commands "info functions", "info types", and | |
3345 | "info variables". It calls search_symbols to find all matches and then | |
3346 | print_[m]symbol_info to print out some useful information about the | |
3347 | matches. | |
c5aa993b | 3348 | */ |
c906108c | 3349 | static void |
176620f1 | 3350 | symtab_symbol_info (char *regexp, domain_enum kind, int from_tty) |
c906108c SS |
3351 | { |
3352 | static char *classnames[] | |
c5aa993b JM |
3353 | = |
3354 | {"variable", "function", "type", "method"}; | |
c906108c SS |
3355 | struct symbol_search *symbols; |
3356 | struct symbol_search *p; | |
3357 | struct cleanup *old_chain; | |
3358 | char *last_filename = NULL; | |
3359 | int first = 1; | |
3360 | ||
3361 | /* must make sure that if we're interrupted, symbols gets freed */ | |
3362 | search_symbols (regexp, kind, 0, (char **) NULL, &symbols); | |
5bd98722 | 3363 | old_chain = make_cleanup_free_search_symbols (symbols); |
c906108c SS |
3364 | |
3365 | printf_filtered (regexp | |
c5aa993b JM |
3366 | ? "All %ss matching regular expression \"%s\":\n" |
3367 | : "All defined %ss:\n", | |
176620f1 | 3368 | classnames[(int) (kind - VARIABLES_DOMAIN)], regexp); |
c906108c SS |
3369 | |
3370 | for (p = symbols; p != NULL; p = p->next) | |
3371 | { | |
3372 | QUIT; | |
3373 | ||
3374 | if (p->msymbol != NULL) | |
c5aa993b JM |
3375 | { |
3376 | if (first) | |
3377 | { | |
3378 | printf_filtered ("\nNon-debugging symbols:\n"); | |
3379 | first = 0; | |
3380 | } | |
3381 | print_msymbol_info (p->msymbol); | |
3382 | } | |
c906108c | 3383 | else |
c5aa993b JM |
3384 | { |
3385 | print_symbol_info (kind, | |
3386 | p->symtab, | |
3387 | p->symbol, | |
3388 | p->block, | |
3389 | last_filename); | |
3390 | last_filename = p->symtab->filename; | |
3391 | } | |
c906108c SS |
3392 | } |
3393 | ||
3394 | do_cleanups (old_chain); | |
3395 | } | |
3396 | ||
3397 | static void | |
fba45db2 | 3398 | variables_info (char *regexp, int from_tty) |
c906108c | 3399 | { |
176620f1 | 3400 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
3401 | } |
3402 | ||
3403 | static void | |
fba45db2 | 3404 | functions_info (char *regexp, int from_tty) |
c906108c | 3405 | { |
176620f1 | 3406 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
3407 | } |
3408 | ||
357e46e7 | 3409 | |
c906108c | 3410 | static void |
fba45db2 | 3411 | types_info (char *regexp, int from_tty) |
c906108c | 3412 | { |
176620f1 | 3413 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
3414 | } |
3415 | ||
c906108c | 3416 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 3417 | |
8b93c638 | 3418 | void |
fba45db2 | 3419 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
3420 | { |
3421 | rbreak_command (regexp, from_tty); | |
3422 | } | |
8926118c | 3423 | |
c906108c | 3424 | static void |
fba45db2 | 3425 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
3426 | { |
3427 | struct symbol_search *ss; | |
3428 | struct symbol_search *p; | |
3429 | struct cleanup *old_chain; | |
3430 | ||
176620f1 | 3431 | search_symbols (regexp, FUNCTIONS_DOMAIN, 0, (char **) NULL, &ss); |
5bd98722 | 3432 | old_chain = make_cleanup_free_search_symbols (ss); |
c906108c SS |
3433 | |
3434 | for (p = ss; p != NULL; p = p->next) | |
3435 | { | |
3436 | if (p->msymbol == NULL) | |
c5aa993b | 3437 | { |
2335f48e DC |
3438 | char *string = alloca (strlen (p->symtab->filename) |
3439 | + strlen (SYMBOL_LINKAGE_NAME (p->symbol)) | |
3440 | + 4); | |
c5aa993b JM |
3441 | strcpy (string, p->symtab->filename); |
3442 | strcat (string, ":'"); | |
2335f48e | 3443 | strcat (string, SYMBOL_LINKAGE_NAME (p->symbol)); |
c5aa993b JM |
3444 | strcat (string, "'"); |
3445 | break_command (string, from_tty); | |
176620f1 | 3446 | print_symbol_info (FUNCTIONS_DOMAIN, |
c5aa993b JM |
3447 | p->symtab, |
3448 | p->symbol, | |
3449 | p->block, | |
3450 | p->symtab->filename); | |
3451 | } | |
c906108c | 3452 | else |
c5aa993b | 3453 | { |
6214f497 DJ |
3454 | char *string = alloca (strlen (SYMBOL_LINKAGE_NAME (p->msymbol)) |
3455 | + 3); | |
3456 | strcpy (string, "'"); | |
3457 | strcat (string, SYMBOL_LINKAGE_NAME (p->msymbol)); | |
3458 | strcat (string, "'"); | |
3459 | ||
3460 | break_command (string, from_tty); | |
c5aa993b | 3461 | printf_filtered ("<function, no debug info> %s;\n", |
de5ad195 | 3462 | SYMBOL_PRINT_NAME (p->msymbol)); |
c5aa993b | 3463 | } |
c906108c SS |
3464 | } |
3465 | ||
3466 | do_cleanups (old_chain); | |
3467 | } | |
c906108c | 3468 | \f |
c5aa993b | 3469 | |
c906108c SS |
3470 | /* Helper routine for make_symbol_completion_list. */ |
3471 | ||
3472 | static int return_val_size; | |
3473 | static int return_val_index; | |
3474 | static char **return_val; | |
3475 | ||
3476 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
c906108c | 3477 | completion_list_add_name \ |
2335f48e | 3478 | (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) |
c906108c SS |
3479 | |
3480 | /* Test to see if the symbol specified by SYMNAME (which is already | |
c5aa993b JM |
3481 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
3482 | characters. If so, add it to the current completion list. */ | |
c906108c SS |
3483 | |
3484 | static void | |
fba45db2 KB |
3485 | completion_list_add_name (char *symname, char *sym_text, int sym_text_len, |
3486 | char *text, char *word) | |
c906108c SS |
3487 | { |
3488 | int newsize; | |
3489 | int i; | |
3490 | ||
3491 | /* clip symbols that cannot match */ | |
3492 | ||
3493 | if (strncmp (symname, sym_text, sym_text_len) != 0) | |
3494 | { | |
3495 | return; | |
3496 | } | |
3497 | ||
c906108c SS |
3498 | /* We have a match for a completion, so add SYMNAME to the current list |
3499 | of matches. Note that the name is moved to freshly malloc'd space. */ | |
3500 | ||
3501 | { | |
3502 | char *new; | |
3503 | if (word == sym_text) | |
3504 | { | |
3505 | new = xmalloc (strlen (symname) + 5); | |
3506 | strcpy (new, symname); | |
3507 | } | |
3508 | else if (word > sym_text) | |
3509 | { | |
3510 | /* Return some portion of symname. */ | |
3511 | new = xmalloc (strlen (symname) + 5); | |
3512 | strcpy (new, symname + (word - sym_text)); | |
3513 | } | |
3514 | else | |
3515 | { | |
3516 | /* Return some of SYM_TEXT plus symname. */ | |
3517 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); | |
3518 | strncpy (new, word, sym_text - word); | |
3519 | new[sym_text - word] = '\0'; | |
3520 | strcat (new, symname); | |
3521 | } | |
3522 | ||
c906108c SS |
3523 | if (return_val_index + 3 > return_val_size) |
3524 | { | |
3525 | newsize = (return_val_size *= 2) * sizeof (char *); | |
3526 | return_val = (char **) xrealloc ((char *) return_val, newsize); | |
3527 | } | |
3528 | return_val[return_val_index++] = new; | |
3529 | return_val[return_val_index] = NULL; | |
3530 | } | |
3531 | } | |
3532 | ||
69636828 AF |
3533 | /* ObjC: In case we are completing on a selector, look as the msymbol |
3534 | again and feed all the selectors into the mill. */ | |
3535 | ||
3536 | static void | |
3537 | completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text, | |
3538 | int sym_text_len, char *text, char *word) | |
3539 | { | |
3540 | static char *tmp = NULL; | |
3541 | static unsigned int tmplen = 0; | |
3542 | ||
3543 | char *method, *category, *selector; | |
3544 | char *tmp2 = NULL; | |
3545 | ||
3546 | method = SYMBOL_NATURAL_NAME (msymbol); | |
3547 | ||
3548 | /* Is it a method? */ | |
3549 | if ((method[0] != '-') && (method[0] != '+')) | |
3550 | return; | |
3551 | ||
3552 | if (sym_text[0] == '[') | |
3553 | /* Complete on shortened method method. */ | |
3554 | completion_list_add_name (method + 1, sym_text, sym_text_len, text, word); | |
3555 | ||
3556 | while ((strlen (method) + 1) >= tmplen) | |
3557 | { | |
3558 | if (tmplen == 0) | |
3559 | tmplen = 1024; | |
3560 | else | |
3561 | tmplen *= 2; | |
3562 | tmp = xrealloc (tmp, tmplen); | |
3563 | } | |
3564 | selector = strchr (method, ' '); | |
3565 | if (selector != NULL) | |
3566 | selector++; | |
3567 | ||
3568 | category = strchr (method, '('); | |
3569 | ||
3570 | if ((category != NULL) && (selector != NULL)) | |
3571 | { | |
3572 | memcpy (tmp, method, (category - method)); | |
3573 | tmp[category - method] = ' '; | |
3574 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
3575 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
3576 | if (sym_text[0] == '[') | |
3577 | completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word); | |
3578 | } | |
3579 | ||
3580 | if (selector != NULL) | |
3581 | { | |
3582 | /* Complete on selector only. */ | |
3583 | strcpy (tmp, selector); | |
3584 | tmp2 = strchr (tmp, ']'); | |
3585 | if (tmp2 != NULL) | |
3586 | *tmp2 = '\0'; | |
3587 | ||
3588 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
3589 | } | |
3590 | } | |
3591 | ||
3592 | /* Break the non-quoted text based on the characters which are in | |
3593 | symbols. FIXME: This should probably be language-specific. */ | |
3594 | ||
3595 | static char * | |
3596 | language_search_unquoted_string (char *text, char *p) | |
3597 | { | |
3598 | for (; p > text; --p) | |
3599 | { | |
3600 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
3601 | continue; | |
3602 | else | |
3603 | { | |
3604 | if ((current_language->la_language == language_objc)) | |
3605 | { | |
3606 | if (p[-1] == ':') /* might be part of a method name */ | |
3607 | continue; | |
3608 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
3609 | p -= 2; /* beginning of a method name */ | |
3610 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') | |
3611 | { /* might be part of a method name */ | |
3612 | char *t = p; | |
3613 | ||
3614 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
3615 | that we are in the middle of a method name. However, | |
3616 | finding "-[" or "+[" should be pretty un-ambiguous. | |
3617 | Unfortunately we have to find it now to decide. */ | |
3618 | ||
3619 | while (t > text) | |
3620 | if (isalnum (t[-1]) || t[-1] == '_' || | |
3621 | t[-1] == ' ' || t[-1] == ':' || | |
3622 | t[-1] == '(' || t[-1] == ')') | |
3623 | --t; | |
3624 | else | |
3625 | break; | |
3626 | ||
3627 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
3628 | p = t - 2; /* method name detected */ | |
3629 | /* else we leave with p unchanged */ | |
3630 | } | |
3631 | } | |
3632 | break; | |
3633 | } | |
3634 | } | |
3635 | return p; | |
3636 | } | |
3637 | ||
c906108c | 3638 | char ** |
41d27058 | 3639 | default_make_symbol_completion_list (char *text, char *word) |
c906108c | 3640 | { |
41d27058 JB |
3641 | /* Problem: All of the symbols have to be copied because readline |
3642 | frees them. I'm not going to worry about this; hopefully there | |
3643 | won't be that many. */ | |
3644 | ||
de4f826b DC |
3645 | struct symbol *sym; |
3646 | struct symtab *s; | |
3647 | struct partial_symtab *ps; | |
3648 | struct minimal_symbol *msymbol; | |
3649 | struct objfile *objfile; | |
3650 | struct block *b, *surrounding_static_block = 0; | |
3651 | struct dict_iterator iter; | |
3652 | int j; | |
c906108c SS |
3653 | struct partial_symbol **psym; |
3654 | /* The symbol we are completing on. Points in same buffer as text. */ | |
3655 | char *sym_text; | |
3656 | /* Length of sym_text. */ | |
3657 | int sym_text_len; | |
3658 | ||
41d27058 | 3659 | /* Now look for the symbol we are supposed to complete on. */ |
c906108c SS |
3660 | { |
3661 | char *p; | |
3662 | char quote_found; | |
3663 | char *quote_pos = NULL; | |
3664 | ||
3665 | /* First see if this is a quoted string. */ | |
3666 | quote_found = '\0'; | |
3667 | for (p = text; *p != '\0'; ++p) | |
3668 | { | |
3669 | if (quote_found != '\0') | |
3670 | { | |
3671 | if (*p == quote_found) | |
3672 | /* Found close quote. */ | |
3673 | quote_found = '\0'; | |
3674 | else if (*p == '\\' && p[1] == quote_found) | |
3675 | /* A backslash followed by the quote character | |
c5aa993b | 3676 | doesn't end the string. */ |
c906108c SS |
3677 | ++p; |
3678 | } | |
3679 | else if (*p == '\'' || *p == '"') | |
3680 | { | |
3681 | quote_found = *p; | |
3682 | quote_pos = p; | |
3683 | } | |
3684 | } | |
3685 | if (quote_found == '\'') | |
3686 | /* A string within single quotes can be a symbol, so complete on it. */ | |
3687 | sym_text = quote_pos + 1; | |
3688 | else if (quote_found == '"') | |
3689 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 3690 | to complete it any other way. */ |
c94fdfd0 EZ |
3691 | { |
3692 | return_val = (char **) xmalloc (sizeof (char *)); | |
3693 | return_val[0] = NULL; | |
3694 | return return_val; | |
3695 | } | |
c906108c SS |
3696 | else |
3697 | { | |
3698 | /* It is not a quoted string. Break it based on the characters | |
3699 | which are in symbols. */ | |
3700 | while (p > text) | |
3701 | { | |
3702 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
3703 | --p; | |
3704 | else | |
3705 | break; | |
3706 | } | |
3707 | sym_text = p; | |
3708 | } | |
3709 | } | |
3710 | ||
3711 | sym_text_len = strlen (sym_text); | |
3712 | ||
3713 | return_val_size = 100; | |
3714 | return_val_index = 0; | |
3715 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
3716 | return_val[0] = NULL; | |
3717 | ||
3718 | /* Look through the partial symtabs for all symbols which begin | |
3719 | by matching SYM_TEXT. Add each one that you find to the list. */ | |
3720 | ||
3721 | ALL_PSYMTABS (objfile, ps) | |
c5aa993b JM |
3722 | { |
3723 | /* If the psymtab's been read in we'll get it when we search | |
3724 | through the blockvector. */ | |
3725 | if (ps->readin) | |
3726 | continue; | |
3727 | ||
3728 | for (psym = objfile->global_psymbols.list + ps->globals_offset; | |
3729 | psym < (objfile->global_psymbols.list + ps->globals_offset | |
3730 | + ps->n_global_syms); | |
3731 | psym++) | |
3732 | { | |
3733 | /* If interrupted, then quit. */ | |
3734 | QUIT; | |
3735 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); | |
3736 | } | |
3737 | ||
3738 | for (psym = objfile->static_psymbols.list + ps->statics_offset; | |
3739 | psym < (objfile->static_psymbols.list + ps->statics_offset | |
3740 | + ps->n_static_syms); | |
3741 | psym++) | |
3742 | { | |
3743 | QUIT; | |
3744 | COMPLETION_LIST_ADD_SYMBOL (*psym, sym_text, sym_text_len, text, word); | |
3745 | } | |
3746 | } | |
c906108c SS |
3747 | |
3748 | /* At this point scan through the misc symbol vectors and add each | |
3749 | symbol you find to the list. Eventually we want to ignore | |
3750 | anything that isn't a text symbol (everything else will be | |
3751 | handled by the psymtab code above). */ | |
3752 | ||
3753 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3754 | { |
3755 | QUIT; | |
3756 | COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); | |
69636828 AF |
3757 | |
3758 | completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word); | |
c5aa993b | 3759 | } |
c906108c SS |
3760 | |
3761 | /* Search upwards from currently selected frame (so that we can | |
3762 | complete on local vars. */ | |
3763 | ||
ae767bfb | 3764 | for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b)) |
c906108c SS |
3765 | { |
3766 | if (!BLOCK_SUPERBLOCK (b)) | |
3767 | { | |
c5aa993b | 3768 | surrounding_static_block = b; /* For elmin of dups */ |
c906108c | 3769 | } |
c5aa993b | 3770 | |
c906108c | 3771 | /* Also catch fields of types defined in this places which match our |
c5aa993b | 3772 | text string. Only complete on types visible from current context. */ |
c906108c | 3773 | |
de4f826b | 3774 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c906108c | 3775 | { |
69636828 | 3776 | QUIT; |
c906108c SS |
3777 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3778 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
3779 | { | |
3780 | struct type *t = SYMBOL_TYPE (sym); | |
3781 | enum type_code c = TYPE_CODE (t); | |
3782 | ||
3783 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
3784 | { | |
3785 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
3786 | { | |
3787 | if (TYPE_FIELD_NAME (t, j)) | |
3788 | { | |
3789 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
c5aa993b | 3790 | sym_text, sym_text_len, text, word); |
c906108c SS |
3791 | } |
3792 | } | |
3793 | } | |
3794 | } | |
3795 | } | |
3796 | } | |
3797 | ||
3798 | /* Go through the symtabs and check the externs and statics for | |
3799 | symbols which match. */ | |
3800 | ||
11309657 | 3801 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3802 | { |
3803 | QUIT; | |
3804 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 3805 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3806 | { |
c5aa993b JM |
3807 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3808 | } | |
3809 | } | |
c906108c | 3810 | |
11309657 | 3811 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3812 | { |
3813 | QUIT; | |
3814 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
3815 | /* Don't do this block twice. */ | |
3816 | if (b == surrounding_static_block) | |
3817 | continue; | |
de4f826b | 3818 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3819 | { |
c5aa993b JM |
3820 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3821 | } | |
3822 | } | |
c906108c SS |
3823 | |
3824 | return (return_val); | |
3825 | } | |
3826 | ||
41d27058 JB |
3827 | /* Return a NULL terminated array of all symbols (regardless of class) |
3828 | which begin by matching TEXT. If the answer is no symbols, then | |
3829 | the return value is an array which contains only a NULL pointer. */ | |
3830 | ||
3831 | char ** | |
3832 | make_symbol_completion_list (char *text, char *word) | |
3833 | { | |
3834 | return current_language->la_make_symbol_completion_list (text, word); | |
3835 | } | |
3836 | ||
c94fdfd0 EZ |
3837 | /* Like make_symbol_completion_list, but returns a list of symbols |
3838 | defined in a source file FILE. */ | |
3839 | ||
3840 | char ** | |
3841 | make_file_symbol_completion_list (char *text, char *word, char *srcfile) | |
3842 | { | |
52f0bd74 AC |
3843 | struct symbol *sym; |
3844 | struct symtab *s; | |
3845 | struct block *b; | |
de4f826b | 3846 | struct dict_iterator iter; |
c94fdfd0 EZ |
3847 | /* The symbol we are completing on. Points in same buffer as text. */ |
3848 | char *sym_text; | |
3849 | /* Length of sym_text. */ | |
3850 | int sym_text_len; | |
3851 | ||
3852 | /* Now look for the symbol we are supposed to complete on. | |
3853 | FIXME: This should be language-specific. */ | |
3854 | { | |
3855 | char *p; | |
3856 | char quote_found; | |
3857 | char *quote_pos = NULL; | |
3858 | ||
3859 | /* First see if this is a quoted string. */ | |
3860 | quote_found = '\0'; | |
3861 | for (p = text; *p != '\0'; ++p) | |
3862 | { | |
3863 | if (quote_found != '\0') | |
3864 | { | |
3865 | if (*p == quote_found) | |
3866 | /* Found close quote. */ | |
3867 | quote_found = '\0'; | |
3868 | else if (*p == '\\' && p[1] == quote_found) | |
3869 | /* A backslash followed by the quote character | |
3870 | doesn't end the string. */ | |
3871 | ++p; | |
3872 | } | |
3873 | else if (*p == '\'' || *p == '"') | |
3874 | { | |
3875 | quote_found = *p; | |
3876 | quote_pos = p; | |
3877 | } | |
3878 | } | |
3879 | if (quote_found == '\'') | |
3880 | /* A string within single quotes can be a symbol, so complete on it. */ | |
3881 | sym_text = quote_pos + 1; | |
3882 | else if (quote_found == '"') | |
3883 | /* A double-quoted string is never a symbol, nor does it make sense | |
3884 | to complete it any other way. */ | |
3885 | { | |
3886 | return_val = (char **) xmalloc (sizeof (char *)); | |
3887 | return_val[0] = NULL; | |
3888 | return return_val; | |
3889 | } | |
3890 | else | |
3891 | { | |
69636828 AF |
3892 | /* Not a quoted string. */ |
3893 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
3894 | } |
3895 | } | |
3896 | ||
3897 | sym_text_len = strlen (sym_text); | |
3898 | ||
3899 | return_val_size = 10; | |
3900 | return_val_index = 0; | |
3901 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
3902 | return_val[0] = NULL; | |
3903 | ||
3904 | /* Find the symtab for SRCFILE (this loads it if it was not yet read | |
3905 | in). */ | |
3906 | s = lookup_symtab (srcfile); | |
3907 | if (s == NULL) | |
3908 | { | |
3909 | /* Maybe they typed the file with leading directories, while the | |
3910 | symbol tables record only its basename. */ | |
31889e00 | 3911 | const char *tail = lbasename (srcfile); |
c94fdfd0 EZ |
3912 | |
3913 | if (tail > srcfile) | |
3914 | s = lookup_symtab (tail); | |
3915 | } | |
3916 | ||
3917 | /* If we have no symtab for that file, return an empty list. */ | |
3918 | if (s == NULL) | |
3919 | return (return_val); | |
3920 | ||
3921 | /* Go through this symtab and check the externs and statics for | |
3922 | symbols which match. */ | |
3923 | ||
3924 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 3925 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 3926 | { |
c94fdfd0 EZ |
3927 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3928 | } | |
3929 | ||
3930 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 3931 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 3932 | { |
c94fdfd0 EZ |
3933 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3934 | } | |
3935 | ||
3936 | return (return_val); | |
3937 | } | |
3938 | ||
3939 | /* A helper function for make_source_files_completion_list. It adds | |
3940 | another file name to a list of possible completions, growing the | |
3941 | list as necessary. */ | |
3942 | ||
3943 | static void | |
3944 | add_filename_to_list (const char *fname, char *text, char *word, | |
3945 | char ***list, int *list_used, int *list_alloced) | |
3946 | { | |
3947 | char *new; | |
3948 | size_t fnlen = strlen (fname); | |
3949 | ||
3950 | if (*list_used + 1 >= *list_alloced) | |
3951 | { | |
3952 | *list_alloced *= 2; | |
3953 | *list = (char **) xrealloc ((char *) *list, | |
3954 | *list_alloced * sizeof (char *)); | |
3955 | } | |
3956 | ||
3957 | if (word == text) | |
3958 | { | |
3959 | /* Return exactly fname. */ | |
3960 | new = xmalloc (fnlen + 5); | |
3961 | strcpy (new, fname); | |
3962 | } | |
3963 | else if (word > text) | |
3964 | { | |
3965 | /* Return some portion of fname. */ | |
3966 | new = xmalloc (fnlen + 5); | |
3967 | strcpy (new, fname + (word - text)); | |
3968 | } | |
3969 | else | |
3970 | { | |
3971 | /* Return some of TEXT plus fname. */ | |
3972 | new = xmalloc (fnlen + (text - word) + 5); | |
3973 | strncpy (new, word, text - word); | |
3974 | new[text - word] = '\0'; | |
3975 | strcat (new, fname); | |
3976 | } | |
3977 | (*list)[*list_used] = new; | |
3978 | (*list)[++*list_used] = NULL; | |
3979 | } | |
3980 | ||
3981 | static int | |
3982 | not_interesting_fname (const char *fname) | |
3983 | { | |
3984 | static const char *illegal_aliens[] = { | |
3985 | "_globals_", /* inserted by coff_symtab_read */ | |
3986 | NULL | |
3987 | }; | |
3988 | int i; | |
3989 | ||
3990 | for (i = 0; illegal_aliens[i]; i++) | |
3991 | { | |
3992 | if (strcmp (fname, illegal_aliens[i]) == 0) | |
3993 | return 1; | |
3994 | } | |
3995 | return 0; | |
3996 | } | |
3997 | ||
3998 | /* Return a NULL terminated array of all source files whose names | |
3999 | begin with matching TEXT. The file names are looked up in the | |
4000 | symbol tables of this program. If the answer is no matchess, then | |
4001 | the return value is an array which contains only a NULL pointer. */ | |
4002 | ||
4003 | char ** | |
4004 | make_source_files_completion_list (char *text, char *word) | |
4005 | { | |
52f0bd74 AC |
4006 | struct symtab *s; |
4007 | struct partial_symtab *ps; | |
4008 | struct objfile *objfile; | |
c94fdfd0 EZ |
4009 | int first = 1; |
4010 | int list_alloced = 1; | |
4011 | int list_used = 0; | |
4012 | size_t text_len = strlen (text); | |
4013 | char **list = (char **) xmalloc (list_alloced * sizeof (char *)); | |
31889e00 | 4014 | const char *base_name; |
c94fdfd0 EZ |
4015 | |
4016 | list[0] = NULL; | |
4017 | ||
4018 | if (!have_full_symbols () && !have_partial_symbols ()) | |
4019 | return list; | |
4020 | ||
4021 | ALL_SYMTABS (objfile, s) | |
4022 | { | |
4023 | if (not_interesting_fname (s->filename)) | |
4024 | continue; | |
4025 | if (!filename_seen (s->filename, 1, &first) | |
4026 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4027 | && strncasecmp (s->filename, text, text_len) == 0 | |
4028 | #else | |
4029 | && strncmp (s->filename, text, text_len) == 0 | |
4030 | #endif | |
4031 | ) | |
4032 | { | |
4033 | /* This file matches for a completion; add it to the current | |
4034 | list of matches. */ | |
4035 | add_filename_to_list (s->filename, text, word, | |
4036 | &list, &list_used, &list_alloced); | |
4037 | } | |
4038 | else | |
4039 | { | |
4040 | /* NOTE: We allow the user to type a base name when the | |
4041 | debug info records leading directories, but not the other | |
4042 | way around. This is what subroutines of breakpoint | |
4043 | command do when they parse file names. */ | |
31889e00 | 4044 | base_name = lbasename (s->filename); |
c94fdfd0 EZ |
4045 | if (base_name != s->filename |
4046 | && !filename_seen (base_name, 1, &first) | |
4047 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4048 | && strncasecmp (base_name, text, text_len) == 0 | |
4049 | #else | |
4050 | && strncmp (base_name, text, text_len) == 0 | |
4051 | #endif | |
4052 | ) | |
4053 | add_filename_to_list (base_name, text, word, | |
4054 | &list, &list_used, &list_alloced); | |
4055 | } | |
4056 | } | |
4057 | ||
4058 | ALL_PSYMTABS (objfile, ps) | |
4059 | { | |
4060 | if (not_interesting_fname (ps->filename)) | |
4061 | continue; | |
4062 | if (!ps->readin) | |
4063 | { | |
4064 | if (!filename_seen (ps->filename, 1, &first) | |
4065 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4066 | && strncasecmp (ps->filename, text, text_len) == 0 | |
4067 | #else | |
4068 | && strncmp (ps->filename, text, text_len) == 0 | |
4069 | #endif | |
4070 | ) | |
4071 | { | |
4072 | /* This file matches for a completion; add it to the | |
4073 | current list of matches. */ | |
4074 | add_filename_to_list (ps->filename, text, word, | |
4075 | &list, &list_used, &list_alloced); | |
4076 | ||
4077 | } | |
4078 | else | |
4079 | { | |
31889e00 | 4080 | base_name = lbasename (ps->filename); |
c94fdfd0 EZ |
4081 | if (base_name != ps->filename |
4082 | && !filename_seen (base_name, 1, &first) | |
4083 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
4084 | && strncasecmp (base_name, text, text_len) == 0 | |
4085 | #else | |
4086 | && strncmp (base_name, text, text_len) == 0 | |
4087 | #endif | |
4088 | ) | |
4089 | add_filename_to_list (base_name, text, word, | |
4090 | &list, &list_used, &list_alloced); | |
4091 | } | |
4092 | } | |
4093 | } | |
4094 | ||
4095 | return list; | |
4096 | } | |
4097 | ||
c906108c SS |
4098 | /* Determine if PC is in the prologue of a function. The prologue is the area |
4099 | between the first instruction of a function, and the first executable line. | |
4100 | Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. | |
4101 | ||
4102 | If non-zero, func_start is where we think the prologue starts, possibly | |
4103 | by previous examination of symbol table information. | |
4104 | */ | |
4105 | ||
4106 | int | |
fba45db2 | 4107 | in_prologue (CORE_ADDR pc, CORE_ADDR func_start) |
c906108c SS |
4108 | { |
4109 | struct symtab_and_line sal; | |
4110 | CORE_ADDR func_addr, func_end; | |
4111 | ||
54cf9c03 EZ |
4112 | /* We have several sources of information we can consult to figure |
4113 | this out. | |
4114 | - Compilers usually emit line number info that marks the prologue | |
4115 | as its own "source line". So the ending address of that "line" | |
4116 | is the end of the prologue. If available, this is the most | |
4117 | reliable method. | |
4118 | - The minimal symbols and partial symbols, which can usually tell | |
4119 | us the starting and ending addresses of a function. | |
4120 | - If we know the function's start address, we can call the | |
a433963d | 4121 | architecture-defined gdbarch_skip_prologue function to analyze the |
54cf9c03 EZ |
4122 | instruction stream and guess where the prologue ends. |
4123 | - Our `func_start' argument; if non-zero, this is the caller's | |
4124 | best guess as to the function's entry point. At the time of | |
4125 | this writing, handle_inferior_event doesn't get this right, so | |
4126 | it should be our last resort. */ | |
4127 | ||
4128 | /* Consult the partial symbol table, to find which function | |
4129 | the PC is in. */ | |
4130 | if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
4131 | { | |
4132 | CORE_ADDR prologue_end; | |
c906108c | 4133 | |
54cf9c03 EZ |
4134 | /* We don't even have minsym information, so fall back to using |
4135 | func_start, if given. */ | |
4136 | if (! func_start) | |
4137 | return 1; /* We *might* be in a prologue. */ | |
c906108c | 4138 | |
a433963d | 4139 | prologue_end = gdbarch_skip_prologue (current_gdbarch, func_start); |
c906108c | 4140 | |
54cf9c03 EZ |
4141 | return func_start <= pc && pc < prologue_end; |
4142 | } | |
c906108c | 4143 | |
54cf9c03 EZ |
4144 | /* If we have line number information for the function, that's |
4145 | usually pretty reliable. */ | |
4146 | sal = find_pc_line (func_addr, 0); | |
c906108c | 4147 | |
54cf9c03 EZ |
4148 | /* Now sal describes the source line at the function's entry point, |
4149 | which (by convention) is the prologue. The end of that "line", | |
4150 | sal.end, is the end of the prologue. | |
4151 | ||
4152 | Note that, for functions whose source code is all on a single | |
4153 | line, the line number information doesn't always end up this way. | |
4154 | So we must verify that our purported end-of-prologue address is | |
4155 | *within* the function, not at its start or end. */ | |
4156 | if (sal.line == 0 | |
4157 | || sal.end <= func_addr | |
4158 | || func_end <= sal.end) | |
4159 | { | |
4160 | /* We don't have any good line number info, so use the minsym | |
4161 | information, together with the architecture-specific prologue | |
4162 | scanning code. */ | |
a433963d UW |
4163 | CORE_ADDR prologue_end = gdbarch_skip_prologue |
4164 | (current_gdbarch, func_addr); | |
c906108c | 4165 | |
54cf9c03 EZ |
4166 | return func_addr <= pc && pc < prologue_end; |
4167 | } | |
c906108c | 4168 | |
54cf9c03 EZ |
4169 | /* We have line number info, and it looks good. */ |
4170 | return func_addr <= pc && pc < sal.end; | |
c906108c SS |
4171 | } |
4172 | ||
634aa483 AC |
4173 | /* Given PC at the function's start address, attempt to find the |
4174 | prologue end using SAL information. Return zero if the skip fails. | |
4175 | ||
4176 | A non-optimized prologue traditionally has one SAL for the function | |
4177 | and a second for the function body. A single line function has | |
4178 | them both pointing at the same line. | |
4179 | ||
4180 | An optimized prologue is similar but the prologue may contain | |
4181 | instructions (SALs) from the instruction body. Need to skip those | |
4182 | while not getting into the function body. | |
4183 | ||
4184 | The functions end point and an increasing SAL line are used as | |
4185 | indicators of the prologue's endpoint. | |
4186 | ||
4187 | This code is based on the function refine_prologue_limit (versions | |
4188 | found in both ia64 and ppc). */ | |
4189 | ||
4190 | CORE_ADDR | |
4191 | skip_prologue_using_sal (CORE_ADDR func_addr) | |
4192 | { | |
4193 | struct symtab_and_line prologue_sal; | |
4194 | CORE_ADDR start_pc; | |
4195 | CORE_ADDR end_pc; | |
4196 | ||
4197 | /* Get an initial range for the function. */ | |
4198 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
cbf3b44a | 4199 | start_pc += gdbarch_deprecated_function_start_offset (current_gdbarch); |
634aa483 AC |
4200 | |
4201 | prologue_sal = find_pc_line (start_pc, 0); | |
4202 | if (prologue_sal.line != 0) | |
4203 | { | |
576c2025 FF |
4204 | /* If there is only one sal that covers the entire function, |
4205 | then it is probably a single line function, like | |
4206 | "foo(){}". */ | |
91934273 | 4207 | if (prologue_sal.end >= end_pc) |
4e463ff5 | 4208 | return 0; |
634aa483 AC |
4209 | while (prologue_sal.end < end_pc) |
4210 | { | |
4211 | struct symtab_and_line sal; | |
4212 | ||
4213 | sal = find_pc_line (prologue_sal.end, 0); | |
4214 | if (sal.line == 0) | |
4215 | break; | |
4216 | /* Assume that a consecutive SAL for the same (or larger) | |
4217 | line mark the prologue -> body transition. */ | |
4218 | if (sal.line >= prologue_sal.line) | |
4219 | break; | |
4220 | /* The case in which compiler's optimizer/scheduler has | |
4221 | moved instructions into the prologue. We look ahead in | |
4222 | the function looking for address ranges whose | |
4223 | corresponding line number is less the first one that we | |
4224 | found for the function. This is more conservative then | |
4225 | refine_prologue_limit which scans a large number of SALs | |
4226 | looking for any in the prologue */ | |
4227 | prologue_sal = sal; | |
4228 | } | |
4229 | } | |
4230 | return prologue_sal.end; | |
4231 | } | |
c906108c | 4232 | \f |
50641945 FN |
4233 | struct symtabs_and_lines |
4234 | decode_line_spec (char *string, int funfirstline) | |
4235 | { | |
4236 | struct symtabs_and_lines sals; | |
0378c332 FN |
4237 | struct symtab_and_line cursal; |
4238 | ||
50641945 | 4239 | if (string == 0) |
8a3fe4f8 | 4240 | error (_("Empty line specification.")); |
0378c332 FN |
4241 | |
4242 | /* We use whatever is set as the current source line. We do not try | |
4243 | and get a default or it will recursively call us! */ | |
4244 | cursal = get_current_source_symtab_and_line (); | |
4245 | ||
50641945 | 4246 | sals = decode_line_1 (&string, funfirstline, |
0378c332 | 4247 | cursal.symtab, cursal.line, |
bffe1ece | 4248 | (char ***) NULL, NULL); |
0378c332 | 4249 | |
50641945 | 4250 | if (*string) |
8a3fe4f8 | 4251 | error (_("Junk at end of line specification: %s"), string); |
50641945 FN |
4252 | return sals; |
4253 | } | |
c5aa993b | 4254 | |
51cc5b07 AC |
4255 | /* Track MAIN */ |
4256 | static char *name_of_main; | |
4257 | ||
4258 | void | |
4259 | set_main_name (const char *name) | |
4260 | { | |
4261 | if (name_of_main != NULL) | |
4262 | { | |
4263 | xfree (name_of_main); | |
4264 | name_of_main = NULL; | |
4265 | } | |
4266 | if (name != NULL) | |
4267 | { | |
4268 | name_of_main = xstrdup (name); | |
4269 | } | |
4270 | } | |
4271 | ||
ea53e89f JB |
4272 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
4273 | accordingly. */ | |
4274 | ||
4275 | static void | |
4276 | find_main_name (void) | |
4277 | { | |
cd6c7346 | 4278 | const char *new_main_name; |
ea53e89f JB |
4279 | |
4280 | /* Try to see if the main procedure is in Ada. */ | |
4281 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
4282 | be to add a new method in the language vector, and call this | |
4283 | method for each language until one of them returns a non-empty | |
4284 | name. This would allow us to remove this hard-coded call to | |
4285 | an Ada function. It is not clear that this is a better approach | |
4286 | at this point, because all methods need to be written in a way | |
4287 | such that false positives never be returned. For instance, it is | |
4288 | important that a method does not return a wrong name for the main | |
4289 | procedure if the main procedure is actually written in a different | |
4290 | language. It is easy to guaranty this with Ada, since we use a | |
4291 | special symbol generated only when the main in Ada to find the name | |
4292 | of the main procedure. It is difficult however to see how this can | |
4293 | be guarantied for languages such as C, for instance. This suggests | |
4294 | that order of call for these methods becomes important, which means | |
4295 | a more complicated approach. */ | |
4296 | new_main_name = ada_main_name (); | |
4297 | if (new_main_name != NULL) | |
4298 | { | |
4299 | set_main_name (new_main_name); | |
4300 | return; | |
4301 | } | |
4302 | ||
cd6c7346 PM |
4303 | new_main_name = pascal_main_name (); |
4304 | if (new_main_name != NULL) | |
4305 | { | |
4306 | set_main_name (new_main_name); | |
4307 | return; | |
4308 | } | |
4309 | ||
ea53e89f JB |
4310 | /* The languages above didn't identify the name of the main procedure. |
4311 | Fallback to "main". */ | |
4312 | set_main_name ("main"); | |
4313 | } | |
4314 | ||
51cc5b07 AC |
4315 | char * |
4316 | main_name (void) | |
4317 | { | |
ea53e89f JB |
4318 | if (name_of_main == NULL) |
4319 | find_main_name (); | |
4320 | ||
4321 | return name_of_main; | |
51cc5b07 AC |
4322 | } |
4323 | ||
ea53e89f JB |
4324 | /* Handle ``executable_changed'' events for the symtab module. */ |
4325 | ||
4326 | static void | |
4327 | symtab_observer_executable_changed (void *unused) | |
4328 | { | |
4329 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
4330 | set_main_name (NULL); | |
4331 | } | |
51cc5b07 | 4332 | |
ed0616c6 VP |
4333 | /* Helper to expand_line_sal below. Appends new sal to SAL, |
4334 | initializing it from SYMTAB, LINENO and PC. */ | |
4335 | static void | |
4336 | append_expanded_sal (struct symtabs_and_lines *sal, | |
4337 | struct symtab *symtab, | |
4338 | int lineno, CORE_ADDR pc) | |
4339 | { | |
4340 | CORE_ADDR func_addr, func_end; | |
4341 | ||
4342 | sal->sals = xrealloc (sal->sals, | |
4343 | sizeof (sal->sals[0]) | |
4344 | * (sal->nelts + 1)); | |
4345 | init_sal (sal->sals + sal->nelts); | |
4346 | sal->sals[sal->nelts].symtab = symtab; | |
4347 | sal->sals[sal->nelts].section = NULL; | |
4348 | sal->sals[sal->nelts].end = 0; | |
4349 | sal->sals[sal->nelts].line = lineno; | |
4350 | sal->sals[sal->nelts].pc = pc; | |
4351 | ++sal->nelts; | |
4352 | } | |
4353 | ||
4354 | /* Compute a set of all sals in | |
4355 | the entire program that correspond to same file | |
4356 | and line as SAL and return those. If there | |
4357 | are several sals that belong to the same block, | |
4358 | only one sal for the block is included in results. */ | |
4359 | ||
4360 | struct symtabs_and_lines | |
4361 | expand_line_sal (struct symtab_and_line sal) | |
4362 | { | |
4363 | struct symtabs_and_lines ret, this_line; | |
4364 | int i, j; | |
4365 | struct objfile *objfile; | |
4366 | struct partial_symtab *psymtab; | |
4367 | struct symtab *symtab; | |
4368 | int lineno; | |
4369 | int deleted = 0; | |
4370 | struct block **blocks = NULL; | |
4371 | int *filter; | |
4372 | ||
4373 | ret.nelts = 0; | |
4374 | ret.sals = NULL; | |
4375 | ||
4376 | if (sal.symtab == NULL || sal.line == 0 || sal.pc != 0) | |
4377 | { | |
4378 | ret.sals = xmalloc (sizeof (struct symtab_and_line)); | |
4379 | ret.sals[0] = sal; | |
4380 | ret.nelts = 1; | |
4381 | return ret; | |
4382 | } | |
4383 | else | |
4384 | { | |
4385 | struct linetable_entry *best_item = 0; | |
4386 | struct symtab *best_symtab = 0; | |
4387 | int exact = 0; | |
4388 | ||
4389 | lineno = sal.line; | |
4390 | ||
4391 | /* We meed to find all symtabs for a file which name | |
4392 | is described by sal. We cannot just directly | |
4393 | iterate over symtabs, since a symtab might not be | |
4394 | yet created. We also cannot iterate over psymtabs, | |
4395 | calling PSYMTAB_TO_SYMTAB and working on that symtab, | |
4396 | since PSYMTAB_TO_SYMTAB will return NULL for psymtab | |
4397 | corresponding to an included file. Therefore, we do | |
4398 | first pass over psymtabs, reading in those with | |
4399 | the right name. Then, we iterate over symtabs, knowing | |
4400 | that all symtabs we're interested in are loaded. */ | |
4401 | ||
4402 | ALL_PSYMTABS (objfile, psymtab) | |
4403 | { | |
4404 | if (strcmp (sal.symtab->filename, | |
4405 | psymtab->filename) == 0) | |
4406 | PSYMTAB_TO_SYMTAB (psymtab); | |
4407 | } | |
4408 | ||
4409 | ||
4410 | /* For each symtab, we add all pcs to ret.sals. I'm actually | |
4411 | not sure what to do if we have exact match in one symtab, | |
4412 | and non-exact match on another symtab. | |
4413 | */ | |
4414 | ALL_SYMTABS (objfile, symtab) | |
4415 | { | |
4416 | if (strcmp (sal.symtab->filename, | |
4417 | symtab->filename) == 0) | |
4418 | { | |
4419 | struct linetable *l; | |
4420 | int len; | |
4421 | l = LINETABLE (symtab); | |
4422 | if (!l) | |
4423 | continue; | |
4424 | len = l->nitems; | |
4425 | ||
4426 | for (j = 0; j < len; j++) | |
4427 | { | |
4428 | struct linetable_entry *item = &(l->item[j]); | |
4429 | ||
4430 | if (item->line == lineno) | |
4431 | { | |
4432 | exact = 1; | |
4433 | append_expanded_sal (&ret, symtab, lineno, item->pc); | |
4434 | } | |
4435 | else if (!exact && item->line > lineno | |
4436 | && (best_item == NULL || item->line < best_item->line)) | |
4437 | ||
4438 | { | |
4439 | best_item = item; | |
4440 | best_symtab = symtab; | |
4441 | } | |
4442 | } | |
4443 | } | |
4444 | } | |
4445 | if (!exact && best_item) | |
4446 | append_expanded_sal (&ret, best_symtab, lineno, best_item->pc); | |
4447 | } | |
4448 | ||
4449 | /* For optimized code, compiler can scatter one source line accross | |
4450 | disjoint ranges of PC values, even when no duplicate functions | |
4451 | or inline functions are involved. For example, 'for (;;)' inside | |
4452 | non-template non-inline non-ctor-or-dtor function can result | |
4453 | in two PC ranges. In this case, we don't want to set breakpoint | |
4454 | on first PC of each range. To filter such cases, we use containing | |
4455 | blocks -- for each PC found above we see if there are other PCs | |
4456 | that are in the same block. If yes, the other PCs are filtered out. */ | |
4457 | ||
4458 | filter = xmalloc (ret.nelts * sizeof (int)); | |
4459 | blocks = xmalloc (ret.nelts * sizeof (struct block *)); | |
4460 | for (i = 0; i < ret.nelts; ++i) | |
4461 | { | |
4462 | filter[i] = 1; | |
4463 | blocks[i] = block_for_pc (ret.sals[i].pc); | |
4464 | } | |
4465 | ||
4466 | for (i = 0; i < ret.nelts; ++i) | |
4467 | if (blocks[i] != NULL) | |
4468 | for (j = i+1; j < ret.nelts; ++j) | |
4469 | if (blocks[j] == blocks[i]) | |
4470 | { | |
4471 | filter[j] = 0; | |
4472 | ++deleted; | |
4473 | break; | |
4474 | } | |
4475 | ||
4476 | { | |
4477 | struct symtab_and_line *final = | |
4478 | xmalloc (sizeof (struct symtab_and_line) * (ret.nelts-deleted)); | |
4479 | ||
4480 | for (i = 0, j = 0; i < ret.nelts; ++i) | |
4481 | if (filter[i]) | |
4482 | final[j++] = ret.sals[i]; | |
4483 | ||
4484 | ret.nelts -= deleted; | |
4485 | xfree (ret.sals); | |
4486 | ret.sals = final; | |
4487 | } | |
4488 | ||
4489 | return ret; | |
4490 | } | |
4491 | ||
4492 | ||
c906108c | 4493 | void |
fba45db2 | 4494 | _initialize_symtab (void) |
c906108c | 4495 | { |
1bedd215 AC |
4496 | add_info ("variables", variables_info, _("\ |
4497 | All global and static variable names, or those matching REGEXP.")); | |
c906108c | 4498 | if (dbx_commands) |
1bedd215 AC |
4499 | add_com ("whereis", class_info, variables_info, _("\ |
4500 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4501 | |
4502 | add_info ("functions", functions_info, | |
1bedd215 | 4503 | _("All function names, or those matching REGEXP.")); |
c906108c | 4504 | |
357e46e7 | 4505 | |
c906108c SS |
4506 | /* FIXME: This command has at least the following problems: |
4507 | 1. It prints builtin types (in a very strange and confusing fashion). | |
4508 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
4509 | typedef struct foo *FOO |
4510 | type_print prints "FOO" when we want to make it (in this situation) | |
4511 | print "struct foo *". | |
c906108c SS |
4512 | I also think "ptype" or "whatis" is more likely to be useful (but if |
4513 | there is much disagreement "info types" can be fixed). */ | |
4514 | add_info ("types", types_info, | |
1bedd215 | 4515 | _("All type names, or those matching REGEXP.")); |
c906108c | 4516 | |
c906108c | 4517 | add_info ("sources", sources_info, |
1bedd215 | 4518 | _("Source files in the program.")); |
c906108c SS |
4519 | |
4520 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 4521 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c SS |
4522 | |
4523 | if (xdb_commands) | |
4524 | { | |
1bedd215 AC |
4525 | add_com ("lf", class_info, sources_info, |
4526 | _("Source files in the program")); | |
4527 | add_com ("lg", class_info, variables_info, _("\ | |
4528 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4529 | } |
4530 | ||
717d2f5a JB |
4531 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
4532 | multiple_symbols_modes, &multiple_symbols_mode, | |
4533 | _("\ | |
4534 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
4535 | in an expression."), _("\ | |
4536 | Show how the debugger handles ambiguities in expressions."), _("\ | |
4537 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
4538 | NULL, NULL, &setlist, &showlist); | |
4539 | ||
c906108c SS |
4540 | /* Initialize the one built-in type that isn't language dependent... */ |
4541 | builtin_type_error = init_type (TYPE_CODE_ERROR, 0, 0, | |
4542 | "<unknown type>", (struct objfile *) NULL); | |
ea53e89f JB |
4543 | |
4544 | observer_attach_executable_changed (symtab_observer_executable_changed); | |
c906108c | 4545 | } |