Commit | Line | Data |
---|---|---|
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, |
4c38e0a4 JB |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, |
5 | 2010 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" |
71c25dea | 58 | #include "cp-support.h" |
ea53e89f | 59 | #include "observer.h" |
94277a38 | 60 | #include "gdb_assert.h" |
3a40aaa0 | 61 | #include "solist.h" |
9a044a89 TT |
62 | #include "macrotab.h" |
63 | #include "macroscope.h" | |
c906108c | 64 | |
ccefe4c4 TT |
65 | #include "psymtab.h" |
66 | ||
c906108c SS |
67 | /* Prototypes for local functions */ |
68 | ||
a14ed312 | 69 | static void completion_list_add_name (char *, char *, int, char *, char *); |
c906108c | 70 | |
a14ed312 | 71 | static void rbreak_command (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void types_info (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void functions_info (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void variables_info (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void sources_info (char *, int); |
c906108c | 80 | |
d092d1a2 | 81 | static void output_source_filename (const char *, int *); |
c906108c | 82 | |
a14ed312 | 83 | static int find_line_common (struct linetable *, int, int *); |
c906108c | 84 | |
50641945 FN |
85 | /* This one is used by linespec.c */ |
86 | ||
87 | char *operator_chars (char *p, char **end); | |
88 | ||
3121eff0 | 89 | static struct symbol *lookup_symbol_aux (const char *name, |
3121eff0 | 90 | const struct block *block, |
176620f1 | 91 | const domain_enum domain, |
53c5240f | 92 | enum language language, |
21b556f4 | 93 | int *is_a_field_of_this); |
fba7f19c | 94 | |
e4051eeb DC |
95 | static |
96 | struct symbol *lookup_symbol_aux_local (const char *name, | |
e4051eeb | 97 | const struct block *block, |
13387711 SW |
98 | const domain_enum domain, |
99 | enum language language); | |
8155455b DC |
100 | |
101 | static | |
102 | struct symbol *lookup_symbol_aux_symtabs (int block_index, | |
103 | const char *name, | |
21b556f4 | 104 | const domain_enum domain); |
8155455b DC |
105 | |
106 | static | |
ccefe4c4 TT |
107 | struct symbol *lookup_symbol_aux_quick (struct objfile *objfile, |
108 | int block_index, | |
109 | const char *name, | |
110 | const domain_enum domain); | |
c906108c | 111 | |
176620f1 | 112 | static void print_symbol_info (domain_enum, |
a14ed312 | 113 | struct symtab *, struct symbol *, int, char *); |
c906108c | 114 | |
a14ed312 | 115 | static void print_msymbol_info (struct minimal_symbol *); |
c906108c | 116 | |
176620f1 | 117 | static void symtab_symbol_info (char *, domain_enum, int); |
c906108c | 118 | |
a14ed312 | 119 | void _initialize_symtab (void); |
c906108c SS |
120 | |
121 | /* */ | |
122 | ||
717d2f5a JB |
123 | /* Allow the user to configure the debugger behavior with respect |
124 | to multiple-choice menus when more than one symbol matches during | |
125 | a symbol lookup. */ | |
126 | ||
7fc830e2 MK |
127 | const char multiple_symbols_ask[] = "ask"; |
128 | const char multiple_symbols_all[] = "all"; | |
129 | const char multiple_symbols_cancel[] = "cancel"; | |
717d2f5a JB |
130 | static const char *multiple_symbols_modes[] = |
131 | { | |
132 | multiple_symbols_ask, | |
133 | multiple_symbols_all, | |
134 | multiple_symbols_cancel, | |
135 | NULL | |
136 | }; | |
137 | static const char *multiple_symbols_mode = multiple_symbols_all; | |
138 | ||
139 | /* Read-only accessor to AUTO_SELECT_MODE. */ | |
140 | ||
141 | const char * | |
142 | multiple_symbols_select_mode (void) | |
143 | { | |
144 | return multiple_symbols_mode; | |
145 | } | |
146 | ||
c906108c | 147 | /* Block in which the most recently searched-for symbol was found. |
9af17804 | 148 | Might be better to make this a parameter to lookup_symbol and |
c906108c SS |
149 | value_of_this. */ |
150 | ||
151 | const struct block *block_found; | |
152 | ||
c906108c SS |
153 | /* Check for a symtab of a specific name; first in symtabs, then in |
154 | psymtabs. *If* there is no '/' in the name, a match after a '/' | |
155 | in the symtab filename will also work. */ | |
156 | ||
1b15f1fa TT |
157 | struct symtab * |
158 | lookup_symtab (const char *name) | |
c906108c | 159 | { |
ccefe4c4 TT |
160 | int found; |
161 | struct symtab *s = NULL; | |
52f0bd74 | 162 | struct objfile *objfile; |
58d370e0 | 163 | char *real_path = NULL; |
f079a2e5 | 164 | char *full_path = NULL; |
58d370e0 TT |
165 | |
166 | /* Here we are interested in canonicalizing an absolute path, not | |
167 | absolutizing a relative path. */ | |
168 | if (IS_ABSOLUTE_PATH (name)) | |
f079a2e5 JB |
169 | { |
170 | full_path = xfullpath (name); | |
171 | make_cleanup (xfree, full_path); | |
172 | real_path = gdb_realpath (name); | |
173 | make_cleanup (xfree, real_path); | |
174 | } | |
c906108c | 175 | |
c5aa993b | 176 | got_symtab: |
c906108c SS |
177 | |
178 | /* First, search for an exact match */ | |
179 | ||
180 | ALL_SYMTABS (objfile, s) | |
58d370e0 | 181 | { |
a7fdf62f | 182 | if (FILENAME_CMP (name, s->filename) == 0) |
58d370e0 | 183 | { |
58d370e0 TT |
184 | return s; |
185 | } | |
9af17804 | 186 | |
58d370e0 TT |
187 | /* If the user gave us an absolute path, try to find the file in |
188 | this symtab and use its absolute path. */ | |
9af17804 | 189 | |
f079a2e5 JB |
190 | if (full_path != NULL) |
191 | { | |
09bcec80 BR |
192 | const char *fp = symtab_to_fullname (s); |
193 | if (fp != NULL && FILENAME_CMP (full_path, fp) == 0) | |
194 | { | |
195 | return s; | |
196 | } | |
f079a2e5 JB |
197 | } |
198 | ||
58d370e0 TT |
199 | if (real_path != NULL) |
200 | { | |
09bcec80 BR |
201 | char *fullname = symtab_to_fullname (s); |
202 | if (fullname != NULL) | |
203 | { | |
204 | char *rp = gdb_realpath (fullname); | |
205 | make_cleanup (xfree, rp); | |
206 | if (FILENAME_CMP (real_path, rp) == 0) | |
207 | { | |
208 | return s; | |
209 | } | |
210 | } | |
58d370e0 TT |
211 | } |
212 | } | |
213 | ||
c906108c SS |
214 | /* Now, search for a matching tail (only if name doesn't have any dirs) */ |
215 | ||
caadab2c | 216 | if (lbasename (name) == name) |
c906108c | 217 | ALL_SYMTABS (objfile, s) |
c5aa993b | 218 | { |
31889e00 | 219 | if (FILENAME_CMP (lbasename (s->filename), name) == 0) |
c5aa993b JM |
220 | return s; |
221 | } | |
c906108c SS |
222 | |
223 | /* Same search rules as above apply here, but now we look thru the | |
224 | psymtabs. */ | |
225 | ||
ccefe4c4 TT |
226 | found = 0; |
227 | ALL_OBJFILES (objfile) | |
228 | { | |
229 | if (objfile->sf | |
230 | && objfile->sf->qf->lookup_symtab (objfile, name, full_path, real_path, | |
231 | &s)) | |
232 | { | |
233 | found = 1; | |
234 | break; | |
235 | } | |
236 | } | |
c906108c | 237 | |
ccefe4c4 | 238 | if (s != NULL) |
c906108c | 239 | return s; |
ccefe4c4 TT |
240 | if (!found) |
241 | return NULL; | |
c906108c SS |
242 | |
243 | /* At this point, we have located the psymtab for this file, but | |
244 | the conversion to a symtab has failed. This usually happens | |
245 | when we are looking up an include file. In this case, | |
246 | PSYMTAB_TO_SYMTAB doesn't return a symtab, even though one has | |
247 | been created. So, we need to run through the symtabs again in | |
248 | order to find the file. | |
249 | XXX - This is a crock, and should be fixed inside of the the | |
250 | symbol parsing routines. */ | |
251 | goto got_symtab; | |
252 | } | |
c906108c SS |
253 | \f |
254 | /* Mangle a GDB method stub type. This actually reassembles the pieces of the | |
255 | full method name, which consist of the class name (from T), the unadorned | |
256 | method name from METHOD_ID, and the signature for the specific overload, | |
257 | specified by SIGNATURE_ID. Note that this function is g++ specific. */ | |
258 | ||
259 | char * | |
fba45db2 | 260 | gdb_mangle_name (struct type *type, int method_id, int signature_id) |
c906108c SS |
261 | { |
262 | int mangled_name_len; | |
263 | char *mangled_name; | |
264 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); | |
265 | struct fn_field *method = &f[signature_id]; | |
266 | char *field_name = TYPE_FN_FIELDLIST_NAME (type, method_id); | |
267 | char *physname = TYPE_FN_FIELD_PHYSNAME (f, signature_id); | |
268 | char *newname = type_name_no_tag (type); | |
269 | ||
270 | /* Does the form of physname indicate that it is the full mangled name | |
271 | of a constructor (not just the args)? */ | |
272 | int is_full_physname_constructor; | |
273 | ||
274 | int is_constructor; | |
015a42b4 | 275 | int is_destructor = is_destructor_name (physname); |
c906108c SS |
276 | /* Need a new type prefix. */ |
277 | char *const_prefix = method->is_const ? "C" : ""; | |
278 | char *volatile_prefix = method->is_volatile ? "V" : ""; | |
279 | char buf[20]; | |
280 | int len = (newname == NULL ? 0 : strlen (newname)); | |
281 | ||
43630227 PS |
282 | /* Nothing to do if physname already contains a fully mangled v3 abi name |
283 | or an operator name. */ | |
284 | if ((physname[0] == '_' && physname[1] == 'Z') | |
285 | || is_operator_name (field_name)) | |
235d1e03 EZ |
286 | return xstrdup (physname); |
287 | ||
015a42b4 | 288 | is_full_physname_constructor = is_constructor_name (physname); |
c906108c SS |
289 | |
290 | is_constructor = | |
6314a349 | 291 | is_full_physname_constructor || (newname && strcmp (field_name, newname) == 0); |
c906108c SS |
292 | |
293 | if (!is_destructor) | |
c5aa993b | 294 | is_destructor = (strncmp (physname, "__dt", 4) == 0); |
c906108c SS |
295 | |
296 | if (is_destructor || is_full_physname_constructor) | |
297 | { | |
c5aa993b JM |
298 | mangled_name = (char *) xmalloc (strlen (physname) + 1); |
299 | strcpy (mangled_name, physname); | |
c906108c SS |
300 | return mangled_name; |
301 | } | |
302 | ||
303 | if (len == 0) | |
304 | { | |
305 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); | |
306 | } | |
307 | else if (physname[0] == 't' || physname[0] == 'Q') | |
308 | { | |
309 | /* The physname for template and qualified methods already includes | |
c5aa993b | 310 | the class name. */ |
c906108c SS |
311 | sprintf (buf, "__%s%s", const_prefix, volatile_prefix); |
312 | newname = NULL; | |
313 | len = 0; | |
314 | } | |
315 | else | |
316 | { | |
317 | sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len); | |
318 | } | |
319 | mangled_name_len = ((is_constructor ? 0 : strlen (field_name)) | |
235d1e03 | 320 | + strlen (buf) + len + strlen (physname) + 1); |
c906108c | 321 | |
c906108c | 322 | { |
c5aa993b | 323 | mangled_name = (char *) xmalloc (mangled_name_len); |
c906108c SS |
324 | if (is_constructor) |
325 | mangled_name[0] = '\0'; | |
326 | else | |
327 | strcpy (mangled_name, field_name); | |
328 | } | |
329 | strcat (mangled_name, buf); | |
330 | /* If the class doesn't have a name, i.e. newname NULL, then we just | |
331 | mangle it using 0 for the length of the class. Thus it gets mangled | |
c5aa993b | 332 | as something starting with `::' rather than `classname::'. */ |
c906108c SS |
333 | if (newname != NULL) |
334 | strcat (mangled_name, newname); | |
335 | ||
336 | strcat (mangled_name, physname); | |
337 | return (mangled_name); | |
338 | } | |
12af6855 JB |
339 | |
340 | \f | |
89aad1f9 EZ |
341 | /* Initialize the language dependent portion of a symbol |
342 | depending upon the language for the symbol. */ | |
343 | void | |
344 | symbol_init_language_specific (struct general_symbol_info *gsymbol, | |
345 | enum language language) | |
346 | { | |
347 | gsymbol->language = language; | |
348 | if (gsymbol->language == language_cplus | |
5784d15e AF |
349 | || gsymbol->language == language_java |
350 | || gsymbol->language == language_objc) | |
89aad1f9 EZ |
351 | { |
352 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
353 | } | |
89aad1f9 EZ |
354 | else |
355 | { | |
356 | memset (&gsymbol->language_specific, 0, | |
357 | sizeof (gsymbol->language_specific)); | |
358 | } | |
359 | } | |
360 | ||
2de7ced7 DJ |
361 | /* Functions to initialize a symbol's mangled name. */ |
362 | ||
04a679b8 TT |
363 | /* Objects of this type are stored in the demangled name hash table. */ |
364 | struct demangled_name_entry | |
365 | { | |
366 | char *mangled; | |
367 | char demangled[1]; | |
368 | }; | |
369 | ||
370 | /* Hash function for the demangled name hash. */ | |
371 | static hashval_t | |
372 | hash_demangled_name_entry (const void *data) | |
373 | { | |
374 | const struct demangled_name_entry *e = data; | |
375 | return htab_hash_string (e->mangled); | |
376 | } | |
377 | ||
378 | /* Equality function for the demangled name hash. */ | |
379 | static int | |
380 | eq_demangled_name_entry (const void *a, const void *b) | |
381 | { | |
382 | const struct demangled_name_entry *da = a; | |
383 | const struct demangled_name_entry *db = b; | |
384 | return strcmp (da->mangled, db->mangled) == 0; | |
385 | } | |
386 | ||
2de7ced7 DJ |
387 | /* Create the hash table used for demangled names. Each hash entry is |
388 | a pair of strings; one for the mangled name and one for the demangled | |
389 | name. The entry is hashed via just the mangled name. */ | |
390 | ||
391 | static void | |
392 | create_demangled_names_hash (struct objfile *objfile) | |
393 | { | |
394 | /* Choose 256 as the starting size of the hash table, somewhat arbitrarily. | |
9af17804 | 395 | The hash table code will round this up to the next prime number. |
2de7ced7 DJ |
396 | Choosing a much larger table size wastes memory, and saves only about |
397 | 1% in symbol reading. */ | |
398 | ||
aa2ee5f6 | 399 | objfile->demangled_names_hash = htab_create_alloc |
04a679b8 | 400 | (256, hash_demangled_name_entry, eq_demangled_name_entry, |
aa2ee5f6 | 401 | NULL, xcalloc, xfree); |
2de7ced7 | 402 | } |
12af6855 | 403 | |
2de7ced7 | 404 | /* Try to determine the demangled name for a symbol, based on the |
12af6855 JB |
405 | language of that symbol. If the language is set to language_auto, |
406 | it will attempt to find any demangling algorithm that works and | |
2de7ced7 DJ |
407 | then set the language appropriately. The returned name is allocated |
408 | by the demangler and should be xfree'd. */ | |
12af6855 | 409 | |
2de7ced7 DJ |
410 | static char * |
411 | symbol_find_demangled_name (struct general_symbol_info *gsymbol, | |
412 | const char *mangled) | |
12af6855 | 413 | { |
12af6855 JB |
414 | char *demangled = NULL; |
415 | ||
416 | if (gsymbol->language == language_unknown) | |
417 | gsymbol->language = language_auto; | |
1bae87b9 AF |
418 | |
419 | if (gsymbol->language == language_objc | |
420 | || gsymbol->language == language_auto) | |
421 | { | |
422 | demangled = | |
423 | objc_demangle (mangled, 0); | |
424 | if (demangled != NULL) | |
425 | { | |
426 | gsymbol->language = language_objc; | |
427 | return demangled; | |
428 | } | |
429 | } | |
12af6855 JB |
430 | if (gsymbol->language == language_cplus |
431 | || gsymbol->language == language_auto) | |
432 | { | |
433 | demangled = | |
94af9270 | 434 | cplus_demangle (mangled, DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE); |
12af6855 | 435 | if (demangled != NULL) |
2de7ced7 DJ |
436 | { |
437 | gsymbol->language = language_cplus; | |
438 | return demangled; | |
439 | } | |
12af6855 JB |
440 | } |
441 | if (gsymbol->language == language_java) | |
442 | { | |
443 | demangled = | |
2de7ced7 | 444 | cplus_demangle (mangled, |
12af6855 JB |
445 | DMGL_PARAMS | DMGL_ANSI | DMGL_JAVA); |
446 | if (demangled != NULL) | |
2de7ced7 DJ |
447 | { |
448 | gsymbol->language = language_java; | |
449 | return demangled; | |
450 | } | |
451 | } | |
452 | return NULL; | |
453 | } | |
454 | ||
980cae7a | 455 | /* Set both the mangled and demangled (if any) names for GSYMBOL based |
04a679b8 TT |
456 | on LINKAGE_NAME and LEN. Ordinarily, NAME is copied onto the |
457 | objfile's obstack; but if COPY_NAME is 0 and if NAME is | |
458 | NUL-terminated, then this function assumes that NAME is already | |
459 | correctly saved (either permanently or with a lifetime tied to the | |
460 | objfile), and it will not be copied. | |
461 | ||
462 | The hash table corresponding to OBJFILE is used, and the memory | |
463 | comes from that objfile's objfile_obstack. LINKAGE_NAME is copied, | |
464 | so the pointer can be discarded after calling this function. */ | |
2de7ced7 | 465 | |
d2a52b27 DC |
466 | /* We have to be careful when dealing with Java names: when we run |
467 | into a Java minimal symbol, we don't know it's a Java symbol, so it | |
468 | gets demangled as a C++ name. This is unfortunate, but there's not | |
469 | much we can do about it: but when demangling partial symbols and | |
470 | regular symbols, we'd better not reuse the wrong demangled name. | |
471 | (See PR gdb/1039.) We solve this by putting a distinctive prefix | |
472 | on Java names when storing them in the hash table. */ | |
473 | ||
474 | /* FIXME: carlton/2003-03-13: This is an unfortunate situation. I | |
475 | don't mind the Java prefix so much: different languages have | |
476 | different demangling requirements, so it's only natural that we | |
477 | need to keep language data around in our demangling cache. But | |
478 | it's not good that the minimal symbol has the wrong demangled name. | |
479 | Unfortunately, I can't think of any easy solution to that | |
480 | problem. */ | |
481 | ||
482 | #define JAVA_PREFIX "##JAVA$$" | |
483 | #define JAVA_PREFIX_LEN 8 | |
484 | ||
2de7ced7 DJ |
485 | void |
486 | symbol_set_names (struct general_symbol_info *gsymbol, | |
04a679b8 TT |
487 | const char *linkage_name, int len, int copy_name, |
488 | struct objfile *objfile) | |
2de7ced7 | 489 | { |
04a679b8 | 490 | struct demangled_name_entry **slot; |
980cae7a DC |
491 | /* A 0-terminated copy of the linkage name. */ |
492 | const char *linkage_name_copy; | |
d2a52b27 DC |
493 | /* A copy of the linkage name that might have a special Java prefix |
494 | added to it, for use when looking names up in the hash table. */ | |
495 | const char *lookup_name; | |
496 | /* The length of lookup_name. */ | |
497 | int lookup_len; | |
04a679b8 | 498 | struct demangled_name_entry entry; |
2de7ced7 | 499 | |
b06ead72 JB |
500 | if (gsymbol->language == language_ada) |
501 | { | |
502 | /* In Ada, we do the symbol lookups using the mangled name, so | |
503 | we can save some space by not storing the demangled name. | |
504 | ||
505 | As a side note, we have also observed some overlap between | |
506 | the C++ mangling and Ada mangling, similarly to what has | |
507 | been observed with Java. Because we don't store the demangled | |
508 | name with the symbol, we don't need to use the same trick | |
509 | as Java. */ | |
04a679b8 TT |
510 | if (!copy_name) |
511 | gsymbol->name = (char *) linkage_name; | |
512 | else | |
513 | { | |
514 | gsymbol->name = obstack_alloc (&objfile->objfile_obstack, len + 1); | |
515 | memcpy (gsymbol->name, linkage_name, len); | |
516 | gsymbol->name[len] = '\0'; | |
517 | } | |
b06ead72 JB |
518 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; |
519 | ||
520 | return; | |
521 | } | |
522 | ||
04a679b8 TT |
523 | if (objfile->demangled_names_hash == NULL) |
524 | create_demangled_names_hash (objfile); | |
525 | ||
980cae7a DC |
526 | /* The stabs reader generally provides names that are not |
527 | NUL-terminated; most of the other readers don't do this, so we | |
d2a52b27 DC |
528 | can just use the given copy, unless we're in the Java case. */ |
529 | if (gsymbol->language == language_java) | |
530 | { | |
531 | char *alloc_name; | |
532 | lookup_len = len + JAVA_PREFIX_LEN; | |
533 | ||
534 | alloc_name = alloca (lookup_len + 1); | |
535 | memcpy (alloc_name, JAVA_PREFIX, JAVA_PREFIX_LEN); | |
536 | memcpy (alloc_name + JAVA_PREFIX_LEN, linkage_name, len); | |
537 | alloc_name[lookup_len] = '\0'; | |
538 | ||
539 | lookup_name = alloc_name; | |
540 | linkage_name_copy = alloc_name + JAVA_PREFIX_LEN; | |
541 | } | |
542 | else if (linkage_name[len] != '\0') | |
2de7ced7 | 543 | { |
980cae7a | 544 | char *alloc_name; |
d2a52b27 | 545 | lookup_len = len; |
980cae7a | 546 | |
d2a52b27 | 547 | alloc_name = alloca (lookup_len + 1); |
980cae7a | 548 | memcpy (alloc_name, linkage_name, len); |
d2a52b27 | 549 | alloc_name[lookup_len] = '\0'; |
980cae7a | 550 | |
d2a52b27 | 551 | lookup_name = alloc_name; |
980cae7a | 552 | linkage_name_copy = alloc_name; |
2de7ced7 DJ |
553 | } |
554 | else | |
980cae7a | 555 | { |
d2a52b27 DC |
556 | lookup_len = len; |
557 | lookup_name = linkage_name; | |
980cae7a DC |
558 | linkage_name_copy = linkage_name; |
559 | } | |
2de7ced7 | 560 | |
04a679b8 TT |
561 | entry.mangled = (char *) lookup_name; |
562 | slot = ((struct demangled_name_entry **) | |
563 | htab_find_slot (objfile->demangled_names_hash, | |
564 | &entry, INSERT)); | |
2de7ced7 DJ |
565 | |
566 | /* If this name is not in the hash table, add it. */ | |
567 | if (*slot == NULL) | |
568 | { | |
980cae7a DC |
569 | char *demangled_name = symbol_find_demangled_name (gsymbol, |
570 | linkage_name_copy); | |
2de7ced7 DJ |
571 | int demangled_len = demangled_name ? strlen (demangled_name) : 0; |
572 | ||
04a679b8 TT |
573 | /* Suppose we have demangled_name==NULL, copy_name==0, and |
574 | lookup_name==linkage_name. In this case, we already have the | |
575 | mangled name saved, and we don't have a demangled name. So, | |
576 | you might think we could save a little space by not recording | |
577 | this in the hash table at all. | |
578 | ||
579 | It turns out that it is actually important to still save such | |
580 | an entry in the hash table, because storing this name gives | |
581 | us better backache hit rates for partial symbols. */ | |
582 | if (!copy_name && lookup_name == linkage_name) | |
583 | { | |
584 | *slot = obstack_alloc (&objfile->objfile_obstack, | |
585 | offsetof (struct demangled_name_entry, | |
586 | demangled) | |
587 | + demangled_len + 1); | |
588 | (*slot)->mangled = (char *) lookup_name; | |
589 | } | |
590 | else | |
591 | { | |
592 | /* If we must copy the mangled name, put it directly after | |
593 | the demangled name so we can have a single | |
594 | allocation. */ | |
595 | *slot = obstack_alloc (&objfile->objfile_obstack, | |
596 | offsetof (struct demangled_name_entry, | |
597 | demangled) | |
598 | + lookup_len + demangled_len + 2); | |
599 | (*slot)->mangled = &((*slot)->demangled[demangled_len + 1]); | |
600 | strcpy ((*slot)->mangled, lookup_name); | |
601 | } | |
602 | ||
980cae7a | 603 | if (demangled_name != NULL) |
2de7ced7 | 604 | { |
04a679b8 | 605 | strcpy ((*slot)->demangled, demangled_name); |
2de7ced7 DJ |
606 | xfree (demangled_name); |
607 | } | |
608 | else | |
04a679b8 | 609 | (*slot)->demangled[0] = '\0'; |
2de7ced7 DJ |
610 | } |
611 | ||
72dcaf82 | 612 | gsymbol->name = (*slot)->mangled + lookup_len - len; |
04a679b8 | 613 | if ((*slot)->demangled[0] != '\0') |
2de7ced7 | 614 | gsymbol->language_specific.cplus_specific.demangled_name |
04a679b8 | 615 | = (*slot)->demangled; |
2de7ced7 DJ |
616 | else |
617 | gsymbol->language_specific.cplus_specific.demangled_name = NULL; | |
618 | } | |
619 | ||
22abf04a DC |
620 | /* Return the source code name of a symbol. In languages where |
621 | demangling is necessary, this is the demangled name. */ | |
622 | ||
623 | char * | |
624 | symbol_natural_name (const struct general_symbol_info *gsymbol) | |
625 | { | |
9af17804 | 626 | switch (gsymbol->language) |
22abf04a | 627 | { |
1f8173e6 PH |
628 | case language_cplus: |
629 | case language_java: | |
630 | case language_objc: | |
631 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
632 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
633 | break; | |
634 | case language_ada: | |
635 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
636 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
637 | else | |
638 | return ada_decode_symbol (gsymbol); | |
639 | break; | |
640 | default: | |
641 | break; | |
22abf04a | 642 | } |
1f8173e6 | 643 | return gsymbol->name; |
22abf04a DC |
644 | } |
645 | ||
9cc0d196 EZ |
646 | /* Return the demangled name for a symbol based on the language for |
647 | that symbol. If no demangled name exists, return NULL. */ | |
648 | char * | |
df8a16a1 | 649 | symbol_demangled_name (const struct general_symbol_info *gsymbol) |
9cc0d196 | 650 | { |
9af17804 | 651 | switch (gsymbol->language) |
1f8173e6 PH |
652 | { |
653 | case language_cplus: | |
654 | case language_java: | |
655 | case language_objc: | |
656 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
657 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
658 | break; | |
659 | case language_ada: | |
660 | if (gsymbol->language_specific.cplus_specific.demangled_name != NULL) | |
661 | return gsymbol->language_specific.cplus_specific.demangled_name; | |
662 | else | |
663 | return ada_decode_symbol (gsymbol); | |
664 | break; | |
665 | default: | |
666 | break; | |
667 | } | |
668 | return NULL; | |
9cc0d196 | 669 | } |
fe39c653 | 670 | |
4725b721 PH |
671 | /* Return the search name of a symbol---generally the demangled or |
672 | linkage name of the symbol, depending on how it will be searched for. | |
9af17804 | 673 | If there is no distinct demangled name, then returns the same value |
4725b721 | 674 | (same pointer) as SYMBOL_LINKAGE_NAME. */ |
fc062ac6 JB |
675 | char * |
676 | symbol_search_name (const struct general_symbol_info *gsymbol) | |
677 | { | |
1f8173e6 PH |
678 | if (gsymbol->language == language_ada) |
679 | return gsymbol->name; | |
680 | else | |
681 | return symbol_natural_name (gsymbol); | |
4725b721 PH |
682 | } |
683 | ||
fe39c653 EZ |
684 | /* Initialize the structure fields to zero values. */ |
685 | void | |
686 | init_sal (struct symtab_and_line *sal) | |
687 | { | |
6c95b8df | 688 | sal->pspace = NULL; |
fe39c653 EZ |
689 | sal->symtab = 0; |
690 | sal->section = 0; | |
691 | sal->line = 0; | |
692 | sal->pc = 0; | |
693 | sal->end = 0; | |
ed0616c6 VP |
694 | sal->explicit_pc = 0; |
695 | sal->explicit_line = 0; | |
fe39c653 | 696 | } |
c906108c SS |
697 | \f |
698 | ||
94277a38 DJ |
699 | /* Return 1 if the two sections are the same, or if they could |
700 | plausibly be copies of each other, one in an original object | |
701 | file and another in a separated debug file. */ | |
702 | ||
703 | int | |
714835d5 UW |
704 | matching_obj_sections (struct obj_section *obj_first, |
705 | struct obj_section *obj_second) | |
94277a38 | 706 | { |
714835d5 UW |
707 | asection *first = obj_first? obj_first->the_bfd_section : NULL; |
708 | asection *second = obj_second? obj_second->the_bfd_section : NULL; | |
94277a38 DJ |
709 | struct objfile *obj; |
710 | ||
711 | /* If they're the same section, then they match. */ | |
712 | if (first == second) | |
713 | return 1; | |
714 | ||
715 | /* If either is NULL, give up. */ | |
716 | if (first == NULL || second == NULL) | |
717 | return 0; | |
718 | ||
719 | /* This doesn't apply to absolute symbols. */ | |
720 | if (first->owner == NULL || second->owner == NULL) | |
721 | return 0; | |
722 | ||
723 | /* If they're in the same object file, they must be different sections. */ | |
724 | if (first->owner == second->owner) | |
725 | return 0; | |
726 | ||
727 | /* Check whether the two sections are potentially corresponding. They must | |
728 | have the same size, address, and name. We can't compare section indexes, | |
729 | which would be more reliable, because some sections may have been | |
730 | stripped. */ | |
731 | if (bfd_get_section_size (first) != bfd_get_section_size (second)) | |
732 | return 0; | |
733 | ||
818f79f6 | 734 | /* In-memory addresses may start at a different offset, relativize them. */ |
94277a38 | 735 | if (bfd_get_section_vma (first->owner, first) |
818f79f6 DJ |
736 | - bfd_get_start_address (first->owner) |
737 | != bfd_get_section_vma (second->owner, second) | |
738 | - bfd_get_start_address (second->owner)) | |
94277a38 DJ |
739 | return 0; |
740 | ||
741 | if (bfd_get_section_name (first->owner, first) == NULL | |
742 | || bfd_get_section_name (second->owner, second) == NULL | |
743 | || strcmp (bfd_get_section_name (first->owner, first), | |
744 | bfd_get_section_name (second->owner, second)) != 0) | |
745 | return 0; | |
746 | ||
747 | /* Otherwise check that they are in corresponding objfiles. */ | |
748 | ||
749 | ALL_OBJFILES (obj) | |
750 | if (obj->obfd == first->owner) | |
751 | break; | |
752 | gdb_assert (obj != NULL); | |
753 | ||
754 | if (obj->separate_debug_objfile != NULL | |
755 | && obj->separate_debug_objfile->obfd == second->owner) | |
756 | return 1; | |
757 | if (obj->separate_debug_objfile_backlink != NULL | |
758 | && obj->separate_debug_objfile_backlink->obfd == second->owner) | |
759 | return 1; | |
760 | ||
761 | return 0; | |
762 | } | |
c5aa993b | 763 | |
ccefe4c4 TT |
764 | struct symtab * |
765 | find_pc_sect_symtab_via_partial (CORE_ADDR pc, struct obj_section *section) | |
c906108c | 766 | { |
52f0bd74 | 767 | struct objfile *objfile; |
8a48e967 DJ |
768 | struct minimal_symbol *msymbol; |
769 | ||
770 | /* If we know that this is not a text address, return failure. This is | |
771 | necessary because we loop based on texthigh and textlow, which do | |
772 | not include the data ranges. */ | |
773 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
774 | if (msymbol | |
712f90be TT |
775 | && (MSYMBOL_TYPE (msymbol) == mst_data |
776 | || MSYMBOL_TYPE (msymbol) == mst_bss | |
777 | || MSYMBOL_TYPE (msymbol) == mst_abs | |
778 | || MSYMBOL_TYPE (msymbol) == mst_file_data | |
779 | || MSYMBOL_TYPE (msymbol) == mst_file_bss)) | |
8a48e967 | 780 | return NULL; |
c906108c | 781 | |
ff013f42 | 782 | ALL_OBJFILES (objfile) |
ccefe4c4 TT |
783 | { |
784 | struct symtab *result = NULL; | |
785 | if (objfile->sf) | |
786 | result = objfile->sf->qf->find_pc_sect_symtab (objfile, msymbol, | |
787 | pc, section, 0); | |
788 | if (result) | |
789 | return result; | |
790 | } | |
ff013f42 JK |
791 | |
792 | return NULL; | |
c906108c | 793 | } |
c906108c SS |
794 | \f |
795 | /* Debug symbols usually don't have section information. We need to dig that | |
796 | out of the minimal symbols and stash that in the debug symbol. */ | |
797 | ||
ccefe4c4 | 798 | void |
907fc202 UW |
799 | fixup_section (struct general_symbol_info *ginfo, |
800 | CORE_ADDR addr, struct objfile *objfile) | |
c906108c SS |
801 | { |
802 | struct minimal_symbol *msym; | |
c906108c | 803 | |
bccdca4a UW |
804 | /* First, check whether a minimal symbol with the same name exists |
805 | and points to the same address. The address check is required | |
806 | e.g. on PowerPC64, where the minimal symbol for a function will | |
807 | point to the function descriptor, while the debug symbol will | |
808 | point to the actual function code. */ | |
907fc202 UW |
809 | msym = lookup_minimal_symbol_by_pc_name (addr, ginfo->name, objfile); |
810 | if (msym) | |
7a78d0ee | 811 | { |
714835d5 | 812 | ginfo->obj_section = SYMBOL_OBJ_SECTION (msym); |
7a78d0ee KB |
813 | ginfo->section = SYMBOL_SECTION (msym); |
814 | } | |
907fc202 | 815 | else |
19e2d14b KB |
816 | { |
817 | /* Static, function-local variables do appear in the linker | |
818 | (minimal) symbols, but are frequently given names that won't | |
819 | be found via lookup_minimal_symbol(). E.g., it has been | |
820 | observed in frv-uclinux (ELF) executables that a static, | |
821 | function-local variable named "foo" might appear in the | |
822 | linker symbols as "foo.6" or "foo.3". Thus, there is no | |
823 | point in attempting to extend the lookup-by-name mechanism to | |
824 | handle this case due to the fact that there can be multiple | |
825 | names. | |
9af17804 | 826 | |
19e2d14b KB |
827 | So, instead, search the section table when lookup by name has |
828 | failed. The ``addr'' and ``endaddr'' fields may have already | |
829 | been relocated. If so, the relocation offset (i.e. the | |
830 | ANOFFSET value) needs to be subtracted from these values when | |
831 | performing the comparison. We unconditionally subtract it, | |
832 | because, when no relocation has been performed, the ANOFFSET | |
833 | value will simply be zero. | |
9af17804 | 834 | |
19e2d14b KB |
835 | The address of the symbol whose section we're fixing up HAS |
836 | NOT BEEN adjusted (relocated) yet. It can't have been since | |
837 | the section isn't yet known and knowing the section is | |
838 | necessary in order to add the correct relocation value. In | |
839 | other words, we wouldn't even be in this function (attempting | |
840 | to compute the section) if it were already known. | |
841 | ||
842 | Note that it is possible to search the minimal symbols | |
843 | (subtracting the relocation value if necessary) to find the | |
844 | matching minimal symbol, but this is overkill and much less | |
845 | efficient. It is not necessary to find the matching minimal | |
9af17804 DE |
846 | symbol, only its section. |
847 | ||
19e2d14b KB |
848 | Note that this technique (of doing a section table search) |
849 | can fail when unrelocated section addresses overlap. For | |
850 | this reason, we still attempt a lookup by name prior to doing | |
851 | a search of the section table. */ | |
9af17804 | 852 | |
19e2d14b | 853 | struct obj_section *s; |
19e2d14b KB |
854 | ALL_OBJFILE_OSECTIONS (objfile, s) |
855 | { | |
856 | int idx = s->the_bfd_section->index; | |
857 | CORE_ADDR offset = ANOFFSET (objfile->section_offsets, idx); | |
858 | ||
f1f6aadf PA |
859 | if (obj_section_addr (s) - offset <= addr |
860 | && addr < obj_section_endaddr (s) - offset) | |
19e2d14b | 861 | { |
714835d5 | 862 | ginfo->obj_section = s; |
19e2d14b KB |
863 | ginfo->section = idx; |
864 | return; | |
865 | } | |
866 | } | |
867 | } | |
c906108c SS |
868 | } |
869 | ||
870 | struct symbol * | |
fba45db2 | 871 | fixup_symbol_section (struct symbol *sym, struct objfile *objfile) |
c906108c | 872 | { |
907fc202 UW |
873 | CORE_ADDR addr; |
874 | ||
c906108c SS |
875 | if (!sym) |
876 | return NULL; | |
877 | ||
714835d5 | 878 | if (SYMBOL_OBJ_SECTION (sym)) |
c906108c SS |
879 | return sym; |
880 | ||
907fc202 UW |
881 | /* We either have an OBJFILE, or we can get at it from the sym's |
882 | symtab. Anything else is a bug. */ | |
883 | gdb_assert (objfile || SYMBOL_SYMTAB (sym)); | |
884 | ||
885 | if (objfile == NULL) | |
886 | objfile = SYMBOL_SYMTAB (sym)->objfile; | |
887 | ||
888 | /* We should have an objfile by now. */ | |
889 | gdb_assert (objfile); | |
890 | ||
891 | switch (SYMBOL_CLASS (sym)) | |
892 | { | |
893 | case LOC_STATIC: | |
894 | case LOC_LABEL: | |
907fc202 UW |
895 | addr = SYMBOL_VALUE_ADDRESS (sym); |
896 | break; | |
897 | case LOC_BLOCK: | |
898 | addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
899 | break; | |
900 | ||
901 | default: | |
902 | /* Nothing else will be listed in the minsyms -- no use looking | |
903 | it up. */ | |
904 | return sym; | |
905 | } | |
906 | ||
907 | fixup_section (&sym->ginfo, addr, objfile); | |
c906108c SS |
908 | |
909 | return sym; | |
910 | } | |
911 | ||
c906108c | 912 | /* Find the definition for a specified symbol name NAME |
176620f1 | 913 | in domain DOMAIN, visible from lexical block BLOCK. |
c906108c | 914 | Returns the struct symbol pointer, or zero if no symbol is found. |
c906108c SS |
915 | C++: if IS_A_FIELD_OF_THIS is nonzero on entry, check to see if |
916 | NAME is a field of the current implied argument `this'. If so set | |
9af17804 | 917 | *IS_A_FIELD_OF_THIS to 1, otherwise set it to zero. |
c906108c SS |
918 | BLOCK_FOUND is set to the block in which NAME is found (in the case of |
919 | a field of `this', value_of_this sets BLOCK_FOUND to the proper value.) */ | |
920 | ||
921 | /* This function has a bunch of loops in it and it would seem to be | |
922 | attractive to put in some QUIT's (though I'm not really sure | |
923 | whether it can run long enough to be really important). But there | |
924 | are a few calls for which it would appear to be bad news to quit | |
7ca9f392 AC |
925 | out of here: find_proc_desc in alpha-tdep.c and mips-tdep.c. (Note |
926 | that there is C++ code below which can error(), but that probably | |
927 | doesn't affect these calls since they are looking for a known | |
928 | variable and thus can probably assume it will never hit the C++ | |
929 | code). */ | |
c906108c SS |
930 | |
931 | struct symbol * | |
53c5240f PA |
932 | lookup_symbol_in_language (const char *name, const struct block *block, |
933 | const domain_enum domain, enum language lang, | |
2570f2b7 | 934 | int *is_a_field_of_this) |
c906108c | 935 | { |
729051e6 DJ |
936 | char *demangled_name = NULL; |
937 | const char *modified_name = NULL; | |
fba7f19c | 938 | struct symbol *returnval; |
9ee6bb93 | 939 | struct cleanup *cleanup = make_cleanup (null_cleanup, 0); |
c906108c | 940 | |
729051e6 DJ |
941 | modified_name = name; |
942 | ||
987504bb | 943 | /* If we are using C++ or Java, demangle the name before doing a lookup, so |
729051e6 | 944 | we can always binary search. */ |
53c5240f | 945 | if (lang == language_cplus) |
729051e6 DJ |
946 | { |
947 | demangled_name = cplus_demangle (name, DMGL_ANSI | DMGL_PARAMS); | |
948 | if (demangled_name) | |
949 | { | |
729051e6 | 950 | modified_name = demangled_name; |
9ee6bb93 | 951 | make_cleanup (xfree, demangled_name); |
729051e6 | 952 | } |
71c25dea TT |
953 | else |
954 | { | |
955 | /* If we were given a non-mangled name, canonicalize it | |
956 | according to the language (so far only for C++). */ | |
957 | demangled_name = cp_canonicalize_string (name); | |
958 | if (demangled_name) | |
959 | { | |
960 | modified_name = demangled_name; | |
961 | make_cleanup (xfree, demangled_name); | |
962 | } | |
963 | } | |
729051e6 | 964 | } |
53c5240f | 965 | else if (lang == language_java) |
987504bb | 966 | { |
9af17804 | 967 | demangled_name = cplus_demangle (name, |
987504bb JJ |
968 | DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA); |
969 | if (demangled_name) | |
970 | { | |
987504bb | 971 | modified_name = demangled_name; |
9ee6bb93 | 972 | make_cleanup (xfree, demangled_name); |
987504bb JJ |
973 | } |
974 | } | |
729051e6 | 975 | |
63872f9d JG |
976 | if (case_sensitivity == case_sensitive_off) |
977 | { | |
978 | char *copy; | |
979 | int len, i; | |
980 | ||
981 | len = strlen (name); | |
982 | copy = (char *) alloca (len + 1); | |
983 | for (i= 0; i < len; i++) | |
984 | copy[i] = tolower (name[i]); | |
985 | copy[len] = 0; | |
fba7f19c | 986 | modified_name = copy; |
63872f9d | 987 | } |
fba7f19c | 988 | |
94af9270 KS |
989 | returnval = lookup_symbol_aux (modified_name, block, domain, lang, |
990 | is_a_field_of_this); | |
9ee6bb93 | 991 | do_cleanups (cleanup); |
fba7f19c | 992 | |
9af17804 | 993 | return returnval; |
fba7f19c EZ |
994 | } |
995 | ||
53c5240f PA |
996 | /* Behave like lookup_symbol_in_language, but performed with the |
997 | current language. */ | |
998 | ||
999 | struct symbol * | |
1000 | lookup_symbol (const char *name, const struct block *block, | |
2570f2b7 | 1001 | domain_enum domain, int *is_a_field_of_this) |
53c5240f PA |
1002 | { |
1003 | return lookup_symbol_in_language (name, block, domain, | |
1004 | current_language->la_language, | |
2570f2b7 | 1005 | is_a_field_of_this); |
53c5240f PA |
1006 | } |
1007 | ||
1008 | /* Behave like lookup_symbol except that NAME is the natural name | |
5ad1c190 DC |
1009 | of the symbol that we're looking for and, if LINKAGE_NAME is |
1010 | non-NULL, ensure that the symbol's linkage name matches as | |
1011 | well. */ | |
1012 | ||
fba7f19c | 1013 | static struct symbol * |
94af9270 KS |
1014 | lookup_symbol_aux (const char *name, const struct block *block, |
1015 | const domain_enum domain, enum language language, | |
1016 | int *is_a_field_of_this) | |
fba7f19c | 1017 | { |
8155455b | 1018 | struct symbol *sym; |
53c5240f | 1019 | const struct language_defn *langdef; |
ccefe4c4 | 1020 | struct objfile *objfile; |
406bc4de | 1021 | |
9a146a11 EZ |
1022 | /* Make sure we do something sensible with is_a_field_of_this, since |
1023 | the callers that set this parameter to some non-null value will | |
1024 | certainly use it later and expect it to be either 0 or 1. | |
1025 | If we don't set it, the contents of is_a_field_of_this are | |
1026 | undefined. */ | |
1027 | if (is_a_field_of_this != NULL) | |
1028 | *is_a_field_of_this = 0; | |
1029 | ||
e4051eeb DC |
1030 | /* Search specified block and its superiors. Don't search |
1031 | STATIC_BLOCK or GLOBAL_BLOCK. */ | |
c906108c | 1032 | |
13387711 | 1033 | sym = lookup_symbol_aux_local (name, block, domain, language); |
8155455b DC |
1034 | if (sym != NULL) |
1035 | return sym; | |
c906108c | 1036 | |
53c5240f | 1037 | /* If requested to do so by the caller and if appropriate for LANGUAGE, |
13387711 | 1038 | check to see if NAME is a field of `this'. */ |
53c5240f PA |
1039 | |
1040 | langdef = language_def (language); | |
5f9a71c3 | 1041 | |
2b2d9e11 VP |
1042 | if (langdef->la_name_of_this != NULL && is_a_field_of_this != NULL |
1043 | && block != NULL) | |
c906108c | 1044 | { |
2b2d9e11 | 1045 | struct symbol *sym = NULL; |
8540c487 | 1046 | const struct block *function_block = block; |
2b2d9e11 VP |
1047 | /* 'this' is only defined in the function's block, so find the |
1048 | enclosing function block. */ | |
8540c487 SW |
1049 | for (; function_block && !BLOCK_FUNCTION (function_block); |
1050 | function_block = BLOCK_SUPERBLOCK (function_block)); | |
2b2d9e11 | 1051 | |
8540c487 SW |
1052 | if (function_block && !dict_empty (BLOCK_DICT (function_block))) |
1053 | sym = lookup_block_symbol (function_block, langdef->la_name_of_this, | |
94af9270 | 1054 | VAR_DOMAIN); |
2b2d9e11 | 1055 | if (sym) |
c906108c | 1056 | { |
2b2d9e11 | 1057 | struct type *t = sym->type; |
9af17804 | 1058 | |
2b2d9e11 VP |
1059 | /* I'm not really sure that type of this can ever |
1060 | be typedefed; just be safe. */ | |
1061 | CHECK_TYPEDEF (t); | |
1062 | if (TYPE_CODE (t) == TYPE_CODE_PTR | |
1063 | || TYPE_CODE (t) == TYPE_CODE_REF) | |
1064 | t = TYPE_TARGET_TYPE (t); | |
9af17804 | 1065 | |
2b2d9e11 VP |
1066 | if (TYPE_CODE (t) != TYPE_CODE_STRUCT |
1067 | && TYPE_CODE (t) != TYPE_CODE_UNION) | |
9af17804 | 1068 | error (_("Internal error: `%s' is not an aggregate"), |
2b2d9e11 | 1069 | langdef->la_name_of_this); |
9af17804 | 1070 | |
2b2d9e11 VP |
1071 | if (check_field (t, name)) |
1072 | { | |
1073 | *is_a_field_of_this = 1; | |
2b2d9e11 VP |
1074 | return NULL; |
1075 | } | |
c906108c SS |
1076 | } |
1077 | } | |
1078 | ||
53c5240f | 1079 | /* Now do whatever is appropriate for LANGUAGE to look |
5f9a71c3 | 1080 | up static and global variables. */ |
c906108c | 1081 | |
94af9270 | 1082 | sym = langdef->la_lookup_symbol_nonlocal (name, block, domain); |
8155455b DC |
1083 | if (sym != NULL) |
1084 | return sym; | |
c906108c | 1085 | |
8155455b DC |
1086 | /* Now search all static file-level symbols. Not strictly correct, |
1087 | but more useful than an error. Do the symtabs first, then check | |
1088 | the psymtabs. If a psymtab indicates the existence of the | |
1089 | desired name as a file-level static, then do psymtab-to-symtab | |
c906108c SS |
1090 | conversion on the fly and return the found symbol. */ |
1091 | ||
94af9270 | 1092 | sym = lookup_symbol_aux_symtabs (STATIC_BLOCK, name, domain); |
8155455b DC |
1093 | if (sym != NULL) |
1094 | return sym; | |
9af17804 | 1095 | |
ccefe4c4 TT |
1096 | ALL_OBJFILES (objfile) |
1097 | { | |
1098 | sym = lookup_symbol_aux_quick (objfile, STATIC_BLOCK, name, domain); | |
1099 | if (sym != NULL) | |
1100 | return sym; | |
1101 | } | |
c906108c | 1102 | |
8155455b | 1103 | return NULL; |
c906108c | 1104 | } |
8155455b | 1105 | |
e4051eeb | 1106 | /* Check to see if the symbol is defined in BLOCK or its superiors. |
89a9d1b1 | 1107 | Don't search STATIC_BLOCK or GLOBAL_BLOCK. */ |
8155455b DC |
1108 | |
1109 | static struct symbol * | |
94af9270 | 1110 | lookup_symbol_aux_local (const char *name, const struct block *block, |
13387711 SW |
1111 | const domain_enum domain, |
1112 | enum language language) | |
8155455b DC |
1113 | { |
1114 | struct symbol *sym; | |
89a9d1b1 | 1115 | const struct block *static_block = block_static_block (block); |
13387711 SW |
1116 | const char *scope = block_scope (block); |
1117 | ||
e4051eeb DC |
1118 | /* Check if either no block is specified or it's a global block. */ |
1119 | ||
89a9d1b1 DC |
1120 | if (static_block == NULL) |
1121 | return NULL; | |
e4051eeb | 1122 | |
89a9d1b1 | 1123 | while (block != static_block) |
f61e8913 | 1124 | { |
94af9270 | 1125 | sym = lookup_symbol_aux_block (name, block, domain); |
f61e8913 DC |
1126 | if (sym != NULL) |
1127 | return sym; | |
edb3359d | 1128 | |
13387711 SW |
1129 | if (language == language_cplus) |
1130 | { | |
1131 | sym = cp_lookup_symbol_imports (scope, | |
1132 | name, | |
1133 | block, | |
1134 | domain, | |
1135 | 1, | |
1136 | 1); | |
1137 | if (sym != NULL) | |
1138 | return sym; | |
1139 | } | |
1140 | ||
edb3359d DJ |
1141 | if (BLOCK_FUNCTION (block) != NULL && block_inlined_p (block)) |
1142 | break; | |
f61e8913 DC |
1143 | block = BLOCK_SUPERBLOCK (block); |
1144 | } | |
1145 | ||
edb3359d | 1146 | /* We've reached the edge of the function without finding a result. */ |
e4051eeb | 1147 | |
f61e8913 DC |
1148 | return NULL; |
1149 | } | |
1150 | ||
3a40aaa0 UW |
1151 | /* Look up OBJFILE to BLOCK. */ |
1152 | ||
1153 | static struct objfile * | |
1154 | lookup_objfile_from_block (const struct block *block) | |
1155 | { | |
1156 | struct objfile *obj; | |
1157 | struct symtab *s; | |
1158 | ||
1159 | if (block == NULL) | |
1160 | return NULL; | |
1161 | ||
1162 | block = block_global_block (block); | |
1163 | /* Go through SYMTABS. */ | |
1164 | ALL_SYMTABS (obj, s) | |
1165 | if (block == BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK)) | |
61f0d762 JK |
1166 | { |
1167 | if (obj->separate_debug_objfile_backlink) | |
1168 | obj = obj->separate_debug_objfile_backlink; | |
1169 | ||
1170 | return obj; | |
1171 | } | |
3a40aaa0 UW |
1172 | |
1173 | return NULL; | |
1174 | } | |
1175 | ||
6c9353d3 PA |
1176 | /* Look up a symbol in a block; if found, fixup the symbol, and set |
1177 | block_found appropriately. */ | |
f61e8913 | 1178 | |
5f9a71c3 | 1179 | struct symbol * |
94af9270 | 1180 | lookup_symbol_aux_block (const char *name, const struct block *block, |
21b556f4 | 1181 | const domain_enum domain) |
f61e8913 DC |
1182 | { |
1183 | struct symbol *sym; | |
f61e8913 | 1184 | |
94af9270 | 1185 | sym = lookup_block_symbol (block, name, domain); |
f61e8913 | 1186 | if (sym) |
8155455b | 1187 | { |
f61e8913 | 1188 | block_found = block; |
21b556f4 | 1189 | return fixup_symbol_section (sym, NULL); |
8155455b DC |
1190 | } |
1191 | ||
1192 | return NULL; | |
1193 | } | |
1194 | ||
3a40aaa0 UW |
1195 | /* Check all global symbols in OBJFILE in symtabs and |
1196 | psymtabs. */ | |
1197 | ||
1198 | struct symbol * | |
15d123c9 | 1199 | lookup_global_symbol_from_objfile (const struct objfile *main_objfile, |
3a40aaa0 | 1200 | const char *name, |
21b556f4 | 1201 | const domain_enum domain) |
3a40aaa0 | 1202 | { |
15d123c9 | 1203 | const struct objfile *objfile; |
3a40aaa0 UW |
1204 | struct symbol *sym; |
1205 | struct blockvector *bv; | |
1206 | const struct block *block; | |
1207 | struct symtab *s; | |
3a40aaa0 | 1208 | |
15d123c9 TG |
1209 | for (objfile = main_objfile; |
1210 | objfile; | |
1211 | objfile = objfile_separate_debug_iterate (main_objfile, objfile)) | |
1212 | { | |
1213 | /* Go through symtabs. */ | |
1214 | ALL_OBJFILE_SYMTABS (objfile, s) | |
1215 | { | |
1216 | bv = BLOCKVECTOR (s); | |
1217 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
94af9270 | 1218 | sym = lookup_block_symbol (block, name, domain); |
15d123c9 TG |
1219 | if (sym) |
1220 | { | |
1221 | block_found = block; | |
1222 | return fixup_symbol_section (sym, (struct objfile *)objfile); | |
1223 | } | |
1224 | } | |
1225 | ||
ccefe4c4 TT |
1226 | sym = lookup_symbol_aux_quick ((struct objfile *) objfile, GLOBAL_BLOCK, |
1227 | name, domain); | |
1228 | if (sym) | |
1229 | return sym; | |
15d123c9 | 1230 | } |
56e3f43c | 1231 | |
3a40aaa0 UW |
1232 | return NULL; |
1233 | } | |
1234 | ||
8155455b DC |
1235 | /* Check to see if the symbol is defined in one of the symtabs. |
1236 | BLOCK_INDEX should be either GLOBAL_BLOCK or STATIC_BLOCK, | |
1237 | depending on whether or not we want to search global symbols or | |
1238 | static symbols. */ | |
1239 | ||
1240 | static struct symbol * | |
94af9270 | 1241 | lookup_symbol_aux_symtabs (int block_index, const char *name, |
21b556f4 | 1242 | const domain_enum domain) |
8155455b DC |
1243 | { |
1244 | struct symbol *sym; | |
1245 | struct objfile *objfile; | |
1246 | struct blockvector *bv; | |
1247 | const struct block *block; | |
1248 | struct symtab *s; | |
1249 | ||
11309657 | 1250 | ALL_PRIMARY_SYMTABS (objfile, s) |
8155455b DC |
1251 | { |
1252 | bv = BLOCKVECTOR (s); | |
1253 | block = BLOCKVECTOR_BLOCK (bv, block_index); | |
94af9270 | 1254 | sym = lookup_block_symbol (block, name, domain); |
8155455b DC |
1255 | if (sym) |
1256 | { | |
1257 | block_found = block; | |
8155455b DC |
1258 | return fixup_symbol_section (sym, objfile); |
1259 | } | |
1260 | } | |
1261 | ||
1262 | return NULL; | |
1263 | } | |
1264 | ||
ccefe4c4 TT |
1265 | /* A helper function for lookup_symbol_aux that interfaces with the |
1266 | "quick" symbol table functions. */ | |
8155455b DC |
1267 | |
1268 | static struct symbol * | |
ccefe4c4 TT |
1269 | lookup_symbol_aux_quick (struct objfile *objfile, int kind, |
1270 | const char *name, const domain_enum domain) | |
8155455b | 1271 | { |
ccefe4c4 | 1272 | struct symtab *symtab; |
8155455b DC |
1273 | struct blockvector *bv; |
1274 | const struct block *block; | |
1275 | struct partial_symtab *ps; | |
ccefe4c4 | 1276 | struct symbol *sym; |
8155455b | 1277 | |
ccefe4c4 TT |
1278 | if (!objfile->sf) |
1279 | return NULL; | |
1280 | symtab = objfile->sf->qf->lookup_symbol (objfile, kind, name, domain); | |
1281 | if (!symtab) | |
1282 | return NULL; | |
8155455b | 1283 | |
ccefe4c4 TT |
1284 | bv = BLOCKVECTOR (symtab); |
1285 | block = BLOCKVECTOR_BLOCK (bv, kind); | |
1286 | sym = lookup_block_symbol (block, name, domain); | |
1287 | if (!sym) | |
1288 | { | |
1289 | /* This shouldn't be necessary, but as a last resort try | |
1290 | looking in the statics even though the psymtab claimed | |
1291 | the symbol was global, or vice-versa. It's possible | |
1292 | that the psymtab gets it wrong in some cases. */ | |
1293 | ||
1294 | /* FIXME: carlton/2002-09-30: Should we really do that? | |
1295 | If that happens, isn't it likely to be a GDB error, in | |
1296 | which case we should fix the GDB error rather than | |
1297 | silently dealing with it here? So I'd vote for | |
1298 | removing the check for the symbol in the other | |
1299 | block. */ | |
1300 | block = BLOCKVECTOR_BLOCK (bv, | |
1301 | kind == GLOBAL_BLOCK ? | |
1302 | STATIC_BLOCK : GLOBAL_BLOCK); | |
1303 | sym = lookup_block_symbol (block, name, domain); | |
1304 | if (!sym) | |
1305 | 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>)."), | |
1306 | kind == GLOBAL_BLOCK ? "global" : "static", | |
1307 | name, symtab->filename, name, name); | |
1308 | } | |
1309 | return fixup_symbol_section (sym, objfile); | |
8155455b DC |
1310 | } |
1311 | ||
5f9a71c3 DC |
1312 | /* A default version of lookup_symbol_nonlocal for use by languages |
1313 | that can't think of anything better to do. This implements the C | |
1314 | lookup rules. */ | |
1315 | ||
1316 | struct symbol * | |
1317 | basic_lookup_symbol_nonlocal (const char *name, | |
5f9a71c3 | 1318 | const struct block *block, |
21b556f4 | 1319 | const domain_enum domain) |
5f9a71c3 DC |
1320 | { |
1321 | struct symbol *sym; | |
1322 | ||
1323 | /* NOTE: carlton/2003-05-19: The comments below were written when | |
1324 | this (or what turned into this) was part of lookup_symbol_aux; | |
1325 | I'm much less worried about these questions now, since these | |
1326 | decisions have turned out well, but I leave these comments here | |
1327 | for posterity. */ | |
1328 | ||
1329 | /* NOTE: carlton/2002-12-05: There is a question as to whether or | |
1330 | not it would be appropriate to search the current global block | |
1331 | here as well. (That's what this code used to do before the | |
1332 | is_a_field_of_this check was moved up.) On the one hand, it's | |
1333 | redundant with the lookup_symbol_aux_symtabs search that happens | |
1334 | next. On the other hand, if decode_line_1 is passed an argument | |
1335 | like filename:var, then the user presumably wants 'var' to be | |
1336 | searched for in filename. On the third hand, there shouldn't be | |
1337 | multiple global variables all of which are named 'var', and it's | |
1338 | not like decode_line_1 has ever restricted its search to only | |
1339 | global variables in a single filename. All in all, only | |
1340 | searching the static block here seems best: it's correct and it's | |
1341 | cleanest. */ | |
1342 | ||
1343 | /* NOTE: carlton/2002-12-05: There's also a possible performance | |
1344 | issue here: if you usually search for global symbols in the | |
1345 | current file, then it would be slightly better to search the | |
1346 | current global block before searching all the symtabs. But there | |
1347 | are other factors that have a much greater effect on performance | |
1348 | than that one, so I don't think we should worry about that for | |
1349 | now. */ | |
1350 | ||
94af9270 | 1351 | sym = lookup_symbol_static (name, block, domain); |
5f9a71c3 DC |
1352 | if (sym != NULL) |
1353 | return sym; | |
1354 | ||
94af9270 | 1355 | return lookup_symbol_global (name, block, domain); |
5f9a71c3 DC |
1356 | } |
1357 | ||
1358 | /* Lookup a symbol in the static block associated to BLOCK, if there | |
1359 | is one; do nothing if BLOCK is NULL or a global block. */ | |
1360 | ||
1361 | struct symbol * | |
1362 | lookup_symbol_static (const char *name, | |
5f9a71c3 | 1363 | const struct block *block, |
21b556f4 | 1364 | const domain_enum domain) |
5f9a71c3 DC |
1365 | { |
1366 | const struct block *static_block = block_static_block (block); | |
1367 | ||
1368 | if (static_block != NULL) | |
94af9270 | 1369 | return lookup_symbol_aux_block (name, static_block, domain); |
5f9a71c3 DC |
1370 | else |
1371 | return NULL; | |
1372 | } | |
1373 | ||
1374 | /* Lookup a symbol in all files' global blocks (searching psymtabs if | |
1375 | necessary). */ | |
1376 | ||
1377 | struct symbol * | |
1378 | lookup_symbol_global (const char *name, | |
3a40aaa0 | 1379 | const struct block *block, |
21b556f4 | 1380 | const domain_enum domain) |
5f9a71c3 | 1381 | { |
3a40aaa0 UW |
1382 | struct symbol *sym = NULL; |
1383 | struct objfile *objfile = NULL; | |
1384 | ||
1385 | /* Call library-specific lookup procedure. */ | |
1386 | objfile = lookup_objfile_from_block (block); | |
1387 | if (objfile != NULL) | |
94af9270 | 1388 | sym = solib_global_lookup (objfile, name, domain); |
3a40aaa0 UW |
1389 | if (sym != NULL) |
1390 | return sym; | |
5f9a71c3 | 1391 | |
94af9270 | 1392 | sym = lookup_symbol_aux_symtabs (GLOBAL_BLOCK, name, domain); |
5f9a71c3 DC |
1393 | if (sym != NULL) |
1394 | return sym; | |
1395 | ||
ccefe4c4 TT |
1396 | ALL_OBJFILES (objfile) |
1397 | { | |
1398 | sym = lookup_symbol_aux_quick (objfile, GLOBAL_BLOCK, name, domain); | |
1399 | if (sym) | |
1400 | return sym; | |
1401 | } | |
1402 | ||
1403 | return NULL; | |
5f9a71c3 DC |
1404 | } |
1405 | ||
5eeb2539 | 1406 | int |
9af17804 | 1407 | symbol_matches_domain (enum language symbol_language, |
5eeb2539 AR |
1408 | domain_enum symbol_domain, |
1409 | domain_enum domain) | |
1410 | { | |
9af17804 | 1411 | /* For C++ "struct foo { ... }" also defines a typedef for "foo". |
5eeb2539 AR |
1412 | A Java class declaration also defines a typedef for the class. |
1413 | Similarly, any Ada type declaration implicitly defines a typedef. */ | |
1414 | if (symbol_language == language_cplus | |
1415 | || symbol_language == language_java | |
1416 | || symbol_language == language_ada) | |
1417 | { | |
1418 | if ((domain == VAR_DOMAIN || domain == STRUCT_DOMAIN) | |
1419 | && symbol_domain == STRUCT_DOMAIN) | |
1420 | return 1; | |
1421 | } | |
1422 | /* For all other languages, strict match is required. */ | |
1423 | return (symbol_domain == domain); | |
1424 | } | |
1425 | ||
ccefe4c4 TT |
1426 | /* Look up a type named NAME in the struct_domain. The type returned |
1427 | must not be opaque -- i.e., must have at least one field | |
1428 | defined. */ | |
c906108c | 1429 | |
ccefe4c4 TT |
1430 | struct type * |
1431 | lookup_transparent_type (const char *name) | |
c906108c | 1432 | { |
ccefe4c4 TT |
1433 | return current_language->la_lookup_transparent_type (name); |
1434 | } | |
9af17804 | 1435 | |
ccefe4c4 TT |
1436 | /* A helper for basic_lookup_transparent_type that interfaces with the |
1437 | "quick" symbol table functions. */ | |
357e46e7 | 1438 | |
ccefe4c4 TT |
1439 | static struct type * |
1440 | basic_lookup_transparent_type_quick (struct objfile *objfile, int kind, | |
1441 | const char *name) | |
1442 | { | |
1443 | struct symtab *symtab; | |
1444 | struct blockvector *bv; | |
1445 | struct block *block; | |
1446 | struct symbol *sym; | |
c906108c | 1447 | |
ccefe4c4 TT |
1448 | if (!objfile->sf) |
1449 | return NULL; | |
1450 | symtab = objfile->sf->qf->lookup_symbol (objfile, kind, name, STRUCT_DOMAIN); | |
1451 | if (!symtab) | |
1452 | return NULL; | |
c906108c | 1453 | |
ccefe4c4 TT |
1454 | bv = BLOCKVECTOR (symtab); |
1455 | block = BLOCKVECTOR_BLOCK (bv, kind); | |
1456 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); | |
1457 | if (!sym) | |
9af17804 | 1458 | { |
ccefe4c4 TT |
1459 | int other_kind = kind == GLOBAL_BLOCK ? STATIC_BLOCK : GLOBAL_BLOCK; |
1460 | ||
1461 | /* This shouldn't be necessary, but as a last resort | |
1462 | * try looking in the 'other kind' even though the psymtab | |
1463 | * claimed the symbol was one thing. It's possible that | |
1464 | * the psymtab gets it wrong in some cases. | |
1465 | */ | |
1466 | block = BLOCKVECTOR_BLOCK (bv, other_kind); | |
1467 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); | |
1468 | if (!sym) | |
1469 | /* FIXME; error is wrong in one case */ | |
1470 | error (_("Internal: global symbol `%s' found in %s psymtab but not in symtab.\n\ | |
1471 | %s may be an inlined function, or may be a template function\n\ | |
1472 | (if a template, try specifying an instantiation: %s<type>)."), | |
1473 | name, symtab->filename, name, name); | |
c906108c | 1474 | } |
ccefe4c4 TT |
1475 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1476 | return SYMBOL_TYPE (sym); | |
c906108c | 1477 | |
ccefe4c4 | 1478 | return NULL; |
b368761e | 1479 | } |
c906108c | 1480 | |
b368761e DC |
1481 | /* The standard implementation of lookup_transparent_type. This code |
1482 | was modeled on lookup_symbol -- the parts not relevant to looking | |
1483 | up types were just left out. In particular it's assumed here that | |
1484 | types are available in struct_domain and only at file-static or | |
1485 | global blocks. */ | |
c906108c SS |
1486 | |
1487 | struct type * | |
b368761e | 1488 | basic_lookup_transparent_type (const char *name) |
c906108c | 1489 | { |
52f0bd74 AC |
1490 | struct symbol *sym; |
1491 | struct symtab *s = NULL; | |
c906108c | 1492 | struct blockvector *bv; |
52f0bd74 AC |
1493 | struct objfile *objfile; |
1494 | struct block *block; | |
ccefe4c4 | 1495 | struct type *t; |
c906108c SS |
1496 | |
1497 | /* Now search all the global symbols. Do the symtab's first, then | |
1498 | check the psymtab's. If a psymtab indicates the existence | |
1499 | of the desired name as a global, then do psymtab-to-symtab | |
1500 | conversion on the fly and return the found symbol. */ | |
c5aa993b | 1501 | |
11309657 | 1502 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1503 | { |
1504 | bv = BLOCKVECTOR (s); | |
1505 | block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
94af9270 | 1506 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); |
c5aa993b JM |
1507 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1508 | { | |
1509 | return SYMBOL_TYPE (sym); | |
1510 | } | |
1511 | } | |
c906108c | 1512 | |
ccefe4c4 | 1513 | ALL_OBJFILES (objfile) |
c5aa993b | 1514 | { |
ccefe4c4 TT |
1515 | t = basic_lookup_transparent_type_quick (objfile, GLOBAL_BLOCK, name); |
1516 | if (t) | |
1517 | return t; | |
c5aa993b | 1518 | } |
c906108c SS |
1519 | |
1520 | /* Now search the static file-level symbols. | |
1521 | Not strictly correct, but more useful than an error. | |
1522 | Do the symtab's first, then | |
1523 | check the psymtab's. If a psymtab indicates the existence | |
1524 | of the desired name as a file-level static, then do psymtab-to-symtab | |
1525 | conversion on the fly and return the found symbol. | |
1526 | */ | |
1527 | ||
11309657 | 1528 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1529 | { |
1530 | bv = BLOCKVECTOR (s); | |
1531 | block = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
94af9270 | 1532 | sym = lookup_block_symbol (block, name, STRUCT_DOMAIN); |
c5aa993b JM |
1533 | if (sym && !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) |
1534 | { | |
1535 | return SYMBOL_TYPE (sym); | |
1536 | } | |
1537 | } | |
c906108c | 1538 | |
ccefe4c4 | 1539 | ALL_OBJFILES (objfile) |
c5aa993b | 1540 | { |
ccefe4c4 TT |
1541 | t = basic_lookup_transparent_type_quick (objfile, STATIC_BLOCK, name); |
1542 | if (t) | |
1543 | return t; | |
c5aa993b | 1544 | } |
ccefe4c4 | 1545 | |
c906108c SS |
1546 | return (struct type *) 0; |
1547 | } | |
1548 | ||
1549 | ||
ccefe4c4 | 1550 | /* Find the name of the file containing main(). */ |
c906108c SS |
1551 | /* FIXME: What about languages without main() or specially linked |
1552 | executables that have no main() ? */ | |
1553 | ||
ccefe4c4 TT |
1554 | char * |
1555 | find_main_filename (void) | |
c906108c | 1556 | { |
52f0bd74 | 1557 | struct objfile *objfile; |
ccefe4c4 | 1558 | char *result, *name = main_name (); |
c906108c | 1559 | |
ccefe4c4 | 1560 | ALL_OBJFILES (objfile) |
c5aa993b | 1561 | { |
ccefe4c4 TT |
1562 | if (!objfile->sf) |
1563 | continue; | |
1564 | result = objfile->sf->qf->find_symbol_file (objfile, name); | |
1565 | if (result) | |
1566 | return result; | |
c5aa993b | 1567 | } |
c906108c SS |
1568 | return (NULL); |
1569 | } | |
1570 | ||
176620f1 | 1571 | /* Search BLOCK for symbol NAME in DOMAIN. |
c906108c SS |
1572 | |
1573 | Note that if NAME is the demangled form of a C++ symbol, we will fail | |
1574 | to find a match during the binary search of the non-encoded names, but | |
1575 | for now we don't worry about the slight inefficiency of looking for | |
1576 | a match we'll never find, since it will go pretty quick. Once the | |
1577 | binary search terminates, we drop through and do a straight linear | |
1bae87b9 | 1578 | search on the symbols. Each symbol which is marked as being a ObjC/C++ |
9af17804 | 1579 | symbol (language_cplus or language_objc set) has both the encoded and |
1bae87b9 | 1580 | non-encoded names tested for a match. |
3121eff0 | 1581 | */ |
c906108c SS |
1582 | |
1583 | struct symbol * | |
aa1ee363 | 1584 | lookup_block_symbol (const struct block *block, const char *name, |
176620f1 | 1585 | const domain_enum domain) |
c906108c | 1586 | { |
de4f826b DC |
1587 | struct dict_iterator iter; |
1588 | struct symbol *sym; | |
c906108c | 1589 | |
de4f826b | 1590 | if (!BLOCK_FUNCTION (block)) |
261397f8 | 1591 | { |
de4f826b DC |
1592 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); |
1593 | sym != NULL; | |
1594 | sym = dict_iter_name_next (name, &iter)) | |
261397f8 | 1595 | { |
5eeb2539 | 1596 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
94af9270 | 1597 | SYMBOL_DOMAIN (sym), domain)) |
261397f8 DJ |
1598 | return sym; |
1599 | } | |
1600 | return NULL; | |
1601 | } | |
526e70c0 | 1602 | else |
c906108c | 1603 | { |
526e70c0 DC |
1604 | /* Note that parameter symbols do not always show up last in the |
1605 | list; this loop makes sure to take anything else other than | |
1606 | parameter symbols first; it only uses parameter symbols as a | |
1607 | last resort. Note that this only takes up extra computation | |
1608 | time on a match. */ | |
de4f826b DC |
1609 | |
1610 | struct symbol *sym_found = NULL; | |
1611 | ||
1612 | for (sym = dict_iter_name_first (BLOCK_DICT (block), name, &iter); | |
1613 | sym != NULL; | |
1614 | sym = dict_iter_name_next (name, &iter)) | |
c906108c | 1615 | { |
5eeb2539 | 1616 | if (symbol_matches_domain (SYMBOL_LANGUAGE (sym), |
94af9270 | 1617 | SYMBOL_DOMAIN (sym), domain)) |
c906108c | 1618 | { |
c906108c | 1619 | sym_found = sym; |
2a2d4dc3 | 1620 | if (!SYMBOL_IS_ARGUMENT (sym)) |
c906108c SS |
1621 | { |
1622 | break; | |
1623 | } | |
1624 | } | |
c906108c | 1625 | } |
de4f826b | 1626 | return (sym_found); /* Will be NULL if not found. */ |
c906108c | 1627 | } |
c906108c SS |
1628 | } |
1629 | ||
c906108c SS |
1630 | /* Find the symtab associated with PC and SECTION. Look through the |
1631 | psymtabs and read in another symtab if necessary. */ | |
1632 | ||
1633 | struct symtab * | |
714835d5 | 1634 | find_pc_sect_symtab (CORE_ADDR pc, struct obj_section *section) |
c906108c | 1635 | { |
52f0bd74 | 1636 | struct block *b; |
c906108c | 1637 | struct blockvector *bv; |
52f0bd74 AC |
1638 | struct symtab *s = NULL; |
1639 | struct symtab *best_s = NULL; | |
1640 | struct partial_symtab *ps; | |
1641 | struct objfile *objfile; | |
6c95b8df | 1642 | struct program_space *pspace; |
c906108c | 1643 | CORE_ADDR distance = 0; |
8a48e967 DJ |
1644 | struct minimal_symbol *msymbol; |
1645 | ||
6c95b8df PA |
1646 | pspace = current_program_space; |
1647 | ||
8a48e967 DJ |
1648 | /* If we know that this is not a text address, return failure. This is |
1649 | necessary because we loop based on the block's high and low code | |
1650 | addresses, which do not include the data ranges, and because | |
1651 | we call find_pc_sect_psymtab which has a similar restriction based | |
1652 | on the partial_symtab's texthigh and textlow. */ | |
1653 | msymbol = lookup_minimal_symbol_by_pc_section (pc, section); | |
1654 | if (msymbol | |
712f90be TT |
1655 | && (MSYMBOL_TYPE (msymbol) == mst_data |
1656 | || MSYMBOL_TYPE (msymbol) == mst_bss | |
1657 | || MSYMBOL_TYPE (msymbol) == mst_abs | |
1658 | || MSYMBOL_TYPE (msymbol) == mst_file_data | |
1659 | || MSYMBOL_TYPE (msymbol) == mst_file_bss)) | |
8a48e967 | 1660 | return NULL; |
c906108c SS |
1661 | |
1662 | /* Search all symtabs for the one whose file contains our address, and which | |
1663 | is the smallest of all the ones containing the address. This is designed | |
1664 | to deal with a case like symtab a is at 0x1000-0x2000 and 0x3000-0x4000 | |
1665 | and symtab b is at 0x2000-0x3000. So the GLOBAL_BLOCK for a is from | |
1666 | 0x1000-0x4000, but for address 0x2345 we want to return symtab b. | |
1667 | ||
1668 | This happens for native ecoff format, where code from included files | |
1669 | gets its own symtab. The symtab for the included file should have | |
1670 | been read in already via the dependency mechanism. | |
1671 | It might be swifter to create several symtabs with the same name | |
1672 | like xcoff does (I'm not sure). | |
1673 | ||
1674 | It also happens for objfiles that have their functions reordered. | |
1675 | For these, the symtab we are looking for is not necessarily read in. */ | |
1676 | ||
11309657 | 1677 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
1678 | { |
1679 | bv = BLOCKVECTOR (s); | |
1680 | b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
c906108c | 1681 | |
c5aa993b | 1682 | if (BLOCK_START (b) <= pc |
c5aa993b | 1683 | && BLOCK_END (b) > pc |
c5aa993b JM |
1684 | && (distance == 0 |
1685 | || BLOCK_END (b) - BLOCK_START (b) < distance)) | |
1686 | { | |
1687 | /* For an objfile that has its functions reordered, | |
1688 | find_pc_psymtab will find the proper partial symbol table | |
1689 | and we simply return its corresponding symtab. */ | |
1690 | /* In order to better support objfiles that contain both | |
1691 | stabs and coff debugging info, we continue on if a psymtab | |
1692 | can't be found. */ | |
ccefe4c4 | 1693 | if ((objfile->flags & OBJF_REORDERED) && objfile->sf) |
c5aa993b | 1694 | { |
ccefe4c4 TT |
1695 | struct symtab *result; |
1696 | result | |
1697 | = objfile->sf->qf->find_pc_sect_symtab (objfile, | |
1698 | msymbol, | |
1699 | pc, section, | |
1700 | 0); | |
1701 | if (result) | |
1702 | return result; | |
c5aa993b JM |
1703 | } |
1704 | if (section != 0) | |
1705 | { | |
de4f826b | 1706 | struct dict_iterator iter; |
261397f8 | 1707 | struct symbol *sym = NULL; |
c906108c | 1708 | |
de4f826b | 1709 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 1710 | { |
261397f8 | 1711 | fixup_symbol_section (sym, objfile); |
714835d5 | 1712 | if (matching_obj_sections (SYMBOL_OBJ_SECTION (sym), section)) |
c5aa993b JM |
1713 | break; |
1714 | } | |
de4f826b | 1715 | if (sym == NULL) |
c5aa993b JM |
1716 | continue; /* no symbol in this symtab matches section */ |
1717 | } | |
1718 | distance = BLOCK_END (b) - BLOCK_START (b); | |
1719 | best_s = s; | |
1720 | } | |
1721 | } | |
c906108c SS |
1722 | |
1723 | if (best_s != NULL) | |
c5aa993b | 1724 | return (best_s); |
c906108c | 1725 | |
ccefe4c4 TT |
1726 | ALL_OBJFILES (objfile) |
1727 | { | |
1728 | struct symtab *result; | |
1729 | if (!objfile->sf) | |
1730 | continue; | |
1731 | result = objfile->sf->qf->find_pc_sect_symtab (objfile, | |
1732 | msymbol, | |
1733 | pc, section, | |
1734 | 1); | |
1735 | if (result) | |
1736 | return result; | |
1737 | } | |
1738 | ||
1739 | return NULL; | |
c906108c SS |
1740 | } |
1741 | ||
1742 | /* Find the symtab associated with PC. Look through the psymtabs and | |
1743 | read in another symtab if necessary. Backward compatibility, no section */ | |
1744 | ||
1745 | struct symtab * | |
fba45db2 | 1746 | find_pc_symtab (CORE_ADDR pc) |
c906108c SS |
1747 | { |
1748 | return find_pc_sect_symtab (pc, find_pc_mapped_section (pc)); | |
1749 | } | |
c906108c | 1750 | \f |
c5aa993b | 1751 | |
7e73cedf | 1752 | /* Find the source file and line number for a given PC value and SECTION. |
c906108c SS |
1753 | Return a structure containing a symtab pointer, a line number, |
1754 | and a pc range for the entire source line. | |
1755 | The value's .pc field is NOT the specified pc. | |
1756 | NOTCURRENT nonzero means, if specified pc is on a line boundary, | |
1757 | use the line that ends there. Otherwise, in that case, the line | |
1758 | that begins there is used. */ | |
1759 | ||
1760 | /* The big complication here is that a line may start in one file, and end just | |
1761 | before the start of another file. This usually occurs when you #include | |
1762 | code in the middle of a subroutine. To properly find the end of a line's PC | |
1763 | range, we must search all symtabs associated with this compilation unit, and | |
1764 | find the one whose first PC is closer than that of the next line in this | |
1765 | symtab. */ | |
1766 | ||
1767 | /* If it's worth the effort, we could be using a binary search. */ | |
1768 | ||
1769 | struct symtab_and_line | |
714835d5 | 1770 | find_pc_sect_line (CORE_ADDR pc, struct obj_section *section, int notcurrent) |
c906108c SS |
1771 | { |
1772 | struct symtab *s; | |
52f0bd74 AC |
1773 | struct linetable *l; |
1774 | int len; | |
1775 | int i; | |
1776 | struct linetable_entry *item; | |
c906108c SS |
1777 | struct symtab_and_line val; |
1778 | struct blockvector *bv; | |
1779 | struct minimal_symbol *msymbol; | |
1780 | struct minimal_symbol *mfunsym; | |
1781 | ||
1782 | /* Info on best line seen so far, and where it starts, and its file. */ | |
1783 | ||
1784 | struct linetable_entry *best = NULL; | |
1785 | CORE_ADDR best_end = 0; | |
1786 | struct symtab *best_symtab = 0; | |
1787 | ||
1788 | /* Store here the first line number | |
1789 | of a file which contains the line at the smallest pc after PC. | |
1790 | If we don't find a line whose range contains PC, | |
1791 | we will use a line one less than this, | |
1792 | with a range from the start of that file to the first line's pc. */ | |
1793 | struct linetable_entry *alt = NULL; | |
1794 | struct symtab *alt_symtab = 0; | |
1795 | ||
1796 | /* Info on best line seen in this file. */ | |
1797 | ||
1798 | struct linetable_entry *prev; | |
1799 | ||
1800 | /* If this pc is not from the current frame, | |
1801 | it is the address of the end of a call instruction. | |
1802 | Quite likely that is the start of the following statement. | |
1803 | But what we want is the statement containing the instruction. | |
1804 | Fudge the pc to make sure we get that. */ | |
1805 | ||
fe39c653 | 1806 | init_sal (&val); /* initialize to zeroes */ |
c906108c | 1807 | |
6c95b8df PA |
1808 | val.pspace = current_program_space; |
1809 | ||
b77b1eb7 JB |
1810 | /* It's tempting to assume that, if we can't find debugging info for |
1811 | any function enclosing PC, that we shouldn't search for line | |
1812 | number info, either. However, GAS can emit line number info for | |
1813 | assembly files --- very helpful when debugging hand-written | |
1814 | assembly code. In such a case, we'd have no debug info for the | |
1815 | function, but we would have line info. */ | |
648f4f79 | 1816 | |
c906108c SS |
1817 | if (notcurrent) |
1818 | pc -= 1; | |
1819 | ||
c5aa993b | 1820 | /* elz: added this because this function returned the wrong |
c906108c SS |
1821 | information if the pc belongs to a stub (import/export) |
1822 | to call a shlib function. This stub would be anywhere between | |
9af17804 DE |
1823 | two functions in the target, and the line info was erroneously |
1824 | taken to be the one of the line before the pc. | |
c5aa993b | 1825 | */ |
c906108c | 1826 | /* RT: Further explanation: |
c5aa993b | 1827 | |
c906108c SS |
1828 | * We have stubs (trampolines) inserted between procedures. |
1829 | * | |
1830 | * Example: "shr1" exists in a shared library, and a "shr1" stub also | |
1831 | * exists in the main image. | |
1832 | * | |
1833 | * In the minimal symbol table, we have a bunch of symbols | |
1834 | * sorted by start address. The stubs are marked as "trampoline", | |
1835 | * the others appear as text. E.g.: | |
1836 | * | |
9af17804 | 1837 | * Minimal symbol table for main image |
c906108c SS |
1838 | * main: code for main (text symbol) |
1839 | * shr1: stub (trampoline symbol) | |
1840 | * foo: code for foo (text symbol) | |
1841 | * ... | |
1842 | * Minimal symbol table for "shr1" image: | |
1843 | * ... | |
1844 | * shr1: code for shr1 (text symbol) | |
1845 | * ... | |
1846 | * | |
1847 | * So the code below is trying to detect if we are in the stub | |
1848 | * ("shr1" stub), and if so, find the real code ("shr1" trampoline), | |
1849 | * and if found, do the symbolization from the real-code address | |
1850 | * rather than the stub address. | |
1851 | * | |
1852 | * Assumptions being made about the minimal symbol table: | |
1853 | * 1. lookup_minimal_symbol_by_pc() will return a trampoline only | |
1854 | * if we're really in the trampoline. If we're beyond it (say | |
9af17804 | 1855 | * we're in "foo" in the above example), it'll have a closer |
c906108c SS |
1856 | * symbol (the "foo" text symbol for example) and will not |
1857 | * return the trampoline. | |
1858 | * 2. lookup_minimal_symbol_text() will find a real text symbol | |
1859 | * corresponding to the trampoline, and whose address will | |
1860 | * be different than the trampoline address. I put in a sanity | |
1861 | * check for the address being the same, to avoid an | |
1862 | * infinite recursion. | |
1863 | */ | |
c5aa993b JM |
1864 | msymbol = lookup_minimal_symbol_by_pc (pc); |
1865 | if (msymbol != NULL) | |
c906108c | 1866 | if (MSYMBOL_TYPE (msymbol) == mst_solib_trampoline) |
c5aa993b | 1867 | { |
2335f48e | 1868 | mfunsym = lookup_minimal_symbol_text (SYMBOL_LINKAGE_NAME (msymbol), |
5520a790 | 1869 | NULL); |
c5aa993b JM |
1870 | if (mfunsym == NULL) |
1871 | /* I eliminated this warning since it is coming out | |
1872 | * in the following situation: | |
1873 | * gdb shmain // test program with shared libraries | |
1874 | * (gdb) break shr1 // function in shared lib | |
1875 | * Warning: In stub for ... | |
9af17804 | 1876 | * In the above situation, the shared lib is not loaded yet, |
c5aa993b JM |
1877 | * so of course we can't find the real func/line info, |
1878 | * but the "break" still works, and the warning is annoying. | |
1879 | * So I commented out the warning. RT */ | |
2335f48e | 1880 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ; |
c5aa993b | 1881 | /* fall through */ |
82cf6c60 | 1882 | else if (SYMBOL_VALUE_ADDRESS (mfunsym) == SYMBOL_VALUE_ADDRESS (msymbol)) |
c5aa993b JM |
1883 | /* Avoid infinite recursion */ |
1884 | /* See above comment about why warning is commented out */ | |
2335f48e | 1885 | /* warning ("In stub for %s; unable to find real function/line info", SYMBOL_LINKAGE_NAME (msymbol)) */ ; |
c5aa993b JM |
1886 | /* fall through */ |
1887 | else | |
82cf6c60 | 1888 | return find_pc_line (SYMBOL_VALUE_ADDRESS (mfunsym), 0); |
c5aa993b | 1889 | } |
c906108c SS |
1890 | |
1891 | ||
1892 | s = find_pc_sect_symtab (pc, section); | |
1893 | if (!s) | |
1894 | { | |
1895 | /* if no symbol information, return previous pc */ | |
1896 | if (notcurrent) | |
1897 | pc++; | |
1898 | val.pc = pc; | |
1899 | return val; | |
1900 | } | |
1901 | ||
1902 | bv = BLOCKVECTOR (s); | |
1903 | ||
1904 | /* Look at all the symtabs that share this blockvector. | |
1905 | They all have the same apriori range, that we found was right; | |
1906 | but they have different line tables. */ | |
1907 | ||
1908 | for (; s && BLOCKVECTOR (s) == bv; s = s->next) | |
1909 | { | |
1910 | /* Find the best line in this symtab. */ | |
1911 | l = LINETABLE (s); | |
1912 | if (!l) | |
c5aa993b | 1913 | continue; |
c906108c SS |
1914 | len = l->nitems; |
1915 | if (len <= 0) | |
1916 | { | |
1917 | /* I think len can be zero if the symtab lacks line numbers | |
1918 | (e.g. gcc -g1). (Either that or the LINETABLE is NULL; | |
1919 | I'm not sure which, and maybe it depends on the symbol | |
1920 | reader). */ | |
1921 | continue; | |
1922 | } | |
1923 | ||
1924 | prev = NULL; | |
1925 | item = l->item; /* Get first line info */ | |
1926 | ||
1927 | /* Is this file's first line closer than the first lines of other files? | |
c5aa993b | 1928 | If so, record this file, and its first line, as best alternate. */ |
c906108c SS |
1929 | if (item->pc > pc && (!alt || item->pc < alt->pc)) |
1930 | { | |
1931 | alt = item; | |
1932 | alt_symtab = s; | |
1933 | } | |
1934 | ||
1935 | for (i = 0; i < len; i++, item++) | |
1936 | { | |
1937 | /* Leave prev pointing to the linetable entry for the last line | |
1938 | that started at or before PC. */ | |
1939 | if (item->pc > pc) | |
1940 | break; | |
1941 | ||
1942 | prev = item; | |
1943 | } | |
1944 | ||
1945 | /* At this point, prev points at the line whose start addr is <= pc, and | |
c5aa993b JM |
1946 | item points at the next line. If we ran off the end of the linetable |
1947 | (pc >= start of the last line), then prev == item. If pc < start of | |
1948 | the first line, prev will not be set. */ | |
c906108c SS |
1949 | |
1950 | /* Is this file's best line closer than the best in the other files? | |
083ae935 DJ |
1951 | If so, record this file, and its best line, as best so far. Don't |
1952 | save prev if it represents the end of a function (i.e. line number | |
1953 | 0) instead of a real line. */ | |
c906108c | 1954 | |
083ae935 | 1955 | if (prev && prev->line && (!best || prev->pc > best->pc)) |
c906108c SS |
1956 | { |
1957 | best = prev; | |
1958 | best_symtab = s; | |
25d53da1 KB |
1959 | |
1960 | /* Discard BEST_END if it's before the PC of the current BEST. */ | |
1961 | if (best_end <= best->pc) | |
1962 | best_end = 0; | |
c906108c | 1963 | } |
25d53da1 KB |
1964 | |
1965 | /* If another line (denoted by ITEM) is in the linetable and its | |
1966 | PC is after BEST's PC, but before the current BEST_END, then | |
1967 | use ITEM's PC as the new best_end. */ | |
1968 | if (best && i < len && item->pc > best->pc | |
1969 | && (best_end == 0 || best_end > item->pc)) | |
1970 | best_end = item->pc; | |
c906108c SS |
1971 | } |
1972 | ||
1973 | if (!best_symtab) | |
1974 | { | |
e86e87f7 DJ |
1975 | /* If we didn't find any line number info, just return zeros. |
1976 | We used to return alt->line - 1 here, but that could be | |
1977 | anywhere; if we don't have line number info for this PC, | |
1978 | don't make some up. */ | |
1979 | val.pc = pc; | |
c906108c | 1980 | } |
e8717518 FF |
1981 | else if (best->line == 0) |
1982 | { | |
1983 | /* If our best fit is in a range of PC's for which no line | |
1984 | number info is available (line number is zero) then we didn't | |
1985 | find any valid line information. */ | |
1986 | val.pc = pc; | |
1987 | } | |
c906108c SS |
1988 | else |
1989 | { | |
1990 | val.symtab = best_symtab; | |
1991 | val.line = best->line; | |
1992 | val.pc = best->pc; | |
1993 | if (best_end && (!alt || best_end < alt->pc)) | |
1994 | val.end = best_end; | |
1995 | else if (alt) | |
1996 | val.end = alt->pc; | |
1997 | else | |
1998 | val.end = BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)); | |
1999 | } | |
2000 | val.section = section; | |
2001 | return val; | |
2002 | } | |
2003 | ||
2004 | /* Backward compatibility (no section) */ | |
2005 | ||
2006 | struct symtab_and_line | |
fba45db2 | 2007 | find_pc_line (CORE_ADDR pc, int notcurrent) |
c906108c | 2008 | { |
714835d5 | 2009 | struct obj_section *section; |
c906108c SS |
2010 | |
2011 | section = find_pc_overlay (pc); | |
2012 | if (pc_in_unmapped_range (pc, section)) | |
2013 | pc = overlay_mapped_address (pc, section); | |
2014 | return find_pc_sect_line (pc, section, notcurrent); | |
2015 | } | |
c906108c | 2016 | \f |
c906108c SS |
2017 | /* Find line number LINE in any symtab whose name is the same as |
2018 | SYMTAB. | |
2019 | ||
2020 | If found, return the symtab that contains the linetable in which it was | |
2021 | found, set *INDEX to the index in the linetable of the best entry | |
2022 | found, and set *EXACT_MATCH nonzero if the value returned is an | |
2023 | exact match. | |
2024 | ||
2025 | If not found, return NULL. */ | |
2026 | ||
50641945 | 2027 | struct symtab * |
fba45db2 | 2028 | find_line_symtab (struct symtab *symtab, int line, int *index, int *exact_match) |
c906108c | 2029 | { |
6f43c46f | 2030 | int exact = 0; /* Initialized here to avoid a compiler warning. */ |
c906108c SS |
2031 | |
2032 | /* BEST_INDEX and BEST_LINETABLE identify the smallest linenumber > LINE | |
2033 | so far seen. */ | |
2034 | ||
2035 | int best_index; | |
2036 | struct linetable *best_linetable; | |
2037 | struct symtab *best_symtab; | |
2038 | ||
2039 | /* First try looking it up in the given symtab. */ | |
2040 | best_linetable = LINETABLE (symtab); | |
2041 | best_symtab = symtab; | |
2042 | best_index = find_line_common (best_linetable, line, &exact); | |
2043 | if (best_index < 0 || !exact) | |
2044 | { | |
2045 | /* Didn't find an exact match. So we better keep looking for | |
c5aa993b JM |
2046 | another symtab with the same name. In the case of xcoff, |
2047 | multiple csects for one source file (produced by IBM's FORTRAN | |
2048 | compiler) produce multiple symtabs (this is unavoidable | |
2049 | assuming csects can be at arbitrary places in memory and that | |
2050 | the GLOBAL_BLOCK of a symtab has a begin and end address). */ | |
c906108c SS |
2051 | |
2052 | /* BEST is the smallest linenumber > LINE so far seen, | |
c5aa993b JM |
2053 | or 0 if none has been seen so far. |
2054 | BEST_INDEX and BEST_LINETABLE identify the item for it. */ | |
c906108c SS |
2055 | int best; |
2056 | ||
2057 | struct objfile *objfile; | |
2058 | struct symtab *s; | |
2059 | ||
2060 | if (best_index >= 0) | |
2061 | best = best_linetable->item[best_index].line; | |
2062 | else | |
2063 | best = 0; | |
2064 | ||
ccefe4c4 | 2065 | ALL_OBJFILES (objfile) |
51432cca | 2066 | { |
ccefe4c4 TT |
2067 | if (objfile->sf) |
2068 | objfile->sf->qf->expand_symtabs_with_filename (objfile, | |
2069 | symtab->filename); | |
51432cca CES |
2070 | } |
2071 | ||
3ffc00b8 JB |
2072 | /* Get symbol full file name if possible. */ |
2073 | symtab_to_fullname (symtab); | |
2074 | ||
c906108c | 2075 | ALL_SYMTABS (objfile, s) |
c5aa993b JM |
2076 | { |
2077 | struct linetable *l; | |
2078 | int ind; | |
c906108c | 2079 | |
3ffc00b8 | 2080 | if (FILENAME_CMP (symtab->filename, s->filename) != 0) |
c5aa993b | 2081 | continue; |
3ffc00b8 JB |
2082 | if (symtab->fullname != NULL |
2083 | && symtab_to_fullname (s) != NULL | |
2084 | && FILENAME_CMP (symtab->fullname, s->fullname) != 0) | |
2085 | continue; | |
c5aa993b JM |
2086 | l = LINETABLE (s); |
2087 | ind = find_line_common (l, line, &exact); | |
2088 | if (ind >= 0) | |
2089 | { | |
2090 | if (exact) | |
2091 | { | |
2092 | best_index = ind; | |
2093 | best_linetable = l; | |
2094 | best_symtab = s; | |
2095 | goto done; | |
2096 | } | |
2097 | if (best == 0 || l->item[ind].line < best) | |
2098 | { | |
2099 | best = l->item[ind].line; | |
2100 | best_index = ind; | |
2101 | best_linetable = l; | |
2102 | best_symtab = s; | |
2103 | } | |
2104 | } | |
2105 | } | |
c906108c | 2106 | } |
c5aa993b | 2107 | done: |
c906108c SS |
2108 | if (best_index < 0) |
2109 | return NULL; | |
2110 | ||
2111 | if (index) | |
2112 | *index = best_index; | |
2113 | if (exact_match) | |
2114 | *exact_match = exact; | |
2115 | ||
2116 | return best_symtab; | |
2117 | } | |
2118 | \f | |
2119 | /* Set the PC value for a given source file and line number and return true. | |
2120 | Returns zero for invalid line number (and sets the PC to 0). | |
2121 | The source file is specified with a struct symtab. */ | |
2122 | ||
2123 | int | |
fba45db2 | 2124 | find_line_pc (struct symtab *symtab, int line, CORE_ADDR *pc) |
c906108c SS |
2125 | { |
2126 | struct linetable *l; | |
2127 | int ind; | |
2128 | ||
2129 | *pc = 0; | |
2130 | if (symtab == 0) | |
2131 | return 0; | |
2132 | ||
2133 | symtab = find_line_symtab (symtab, line, &ind, NULL); | |
2134 | if (symtab != NULL) | |
2135 | { | |
2136 | l = LINETABLE (symtab); | |
2137 | *pc = l->item[ind].pc; | |
2138 | return 1; | |
2139 | } | |
2140 | else | |
2141 | return 0; | |
2142 | } | |
2143 | ||
2144 | /* Find the range of pc values in a line. | |
2145 | Store the starting pc of the line into *STARTPTR | |
2146 | and the ending pc (start of next line) into *ENDPTR. | |
2147 | Returns 1 to indicate success. | |
2148 | Returns 0 if could not find the specified line. */ | |
2149 | ||
2150 | int | |
fba45db2 KB |
2151 | find_line_pc_range (struct symtab_and_line sal, CORE_ADDR *startptr, |
2152 | CORE_ADDR *endptr) | |
c906108c SS |
2153 | { |
2154 | CORE_ADDR startaddr; | |
2155 | struct symtab_and_line found_sal; | |
2156 | ||
2157 | startaddr = sal.pc; | |
c5aa993b | 2158 | if (startaddr == 0 && !find_line_pc (sal.symtab, sal.line, &startaddr)) |
c906108c SS |
2159 | return 0; |
2160 | ||
2161 | /* This whole function is based on address. For example, if line 10 has | |
2162 | two parts, one from 0x100 to 0x200 and one from 0x300 to 0x400, then | |
2163 | "info line *0x123" should say the line goes from 0x100 to 0x200 | |
2164 | and "info line *0x355" should say the line goes from 0x300 to 0x400. | |
2165 | This also insures that we never give a range like "starts at 0x134 | |
2166 | and ends at 0x12c". */ | |
2167 | ||
2168 | found_sal = find_pc_sect_line (startaddr, sal.section, 0); | |
2169 | if (found_sal.line != sal.line) | |
2170 | { | |
2171 | /* The specified line (sal) has zero bytes. */ | |
2172 | *startptr = found_sal.pc; | |
2173 | *endptr = found_sal.pc; | |
2174 | } | |
2175 | else | |
2176 | { | |
2177 | *startptr = found_sal.pc; | |
2178 | *endptr = found_sal.end; | |
2179 | } | |
2180 | return 1; | |
2181 | } | |
2182 | ||
2183 | /* Given a line table and a line number, return the index into the line | |
2184 | table for the pc of the nearest line whose number is >= the specified one. | |
2185 | Return -1 if none is found. The value is >= 0 if it is an index. | |
2186 | ||
2187 | Set *EXACT_MATCH nonzero if the value returned is an exact match. */ | |
2188 | ||
2189 | static int | |
aa1ee363 | 2190 | find_line_common (struct linetable *l, int lineno, |
fba45db2 | 2191 | int *exact_match) |
c906108c | 2192 | { |
52f0bd74 AC |
2193 | int i; |
2194 | int len; | |
c906108c SS |
2195 | |
2196 | /* BEST is the smallest linenumber > LINENO so far seen, | |
2197 | or 0 if none has been seen so far. | |
2198 | BEST_INDEX identifies the item for it. */ | |
2199 | ||
2200 | int best_index = -1; | |
2201 | int best = 0; | |
2202 | ||
b7589f7d DJ |
2203 | *exact_match = 0; |
2204 | ||
c906108c SS |
2205 | if (lineno <= 0) |
2206 | return -1; | |
2207 | if (l == 0) | |
2208 | return -1; | |
2209 | ||
2210 | len = l->nitems; | |
2211 | for (i = 0; i < len; i++) | |
2212 | { | |
aa1ee363 | 2213 | struct linetable_entry *item = &(l->item[i]); |
c906108c SS |
2214 | |
2215 | if (item->line == lineno) | |
2216 | { | |
2217 | /* Return the first (lowest address) entry which matches. */ | |
2218 | *exact_match = 1; | |
2219 | return i; | |
2220 | } | |
2221 | ||
2222 | if (item->line > lineno && (best == 0 || item->line < best)) | |
2223 | { | |
2224 | best = item->line; | |
2225 | best_index = i; | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* If we got here, we didn't get an exact match. */ | |
c906108c SS |
2230 | return best_index; |
2231 | } | |
2232 | ||
2233 | int | |
fba45db2 | 2234 | find_pc_line_pc_range (CORE_ADDR pc, CORE_ADDR *startptr, CORE_ADDR *endptr) |
c906108c SS |
2235 | { |
2236 | struct symtab_and_line sal; | |
2237 | sal = find_pc_line (pc, 0); | |
2238 | *startptr = sal.pc; | |
2239 | *endptr = sal.end; | |
2240 | return sal.symtab != 0; | |
2241 | } | |
2242 | ||
8c7a1ee8 EZ |
2243 | /* Given a function start address FUNC_ADDR and SYMTAB, find the first |
2244 | address for that function that has an entry in SYMTAB's line info | |
2245 | table. If such an entry cannot be found, return FUNC_ADDR | |
2246 | unaltered. */ | |
2247 | CORE_ADDR | |
2248 | skip_prologue_using_lineinfo (CORE_ADDR func_addr, struct symtab *symtab) | |
2249 | { | |
2250 | CORE_ADDR func_start, func_end; | |
2251 | struct linetable *l; | |
2252 | int ind, i, len; | |
2253 | int best_lineno = 0; | |
2254 | CORE_ADDR best_pc = func_addr; | |
2255 | ||
2256 | /* Give up if this symbol has no lineinfo table. */ | |
2257 | l = LINETABLE (symtab); | |
2258 | if (l == NULL) | |
2259 | return func_addr; | |
2260 | ||
2261 | /* Get the range for the function's PC values, or give up if we | |
2262 | cannot, for some reason. */ | |
2263 | if (!find_pc_partial_function (func_addr, NULL, &func_start, &func_end)) | |
2264 | return func_addr; | |
2265 | ||
2266 | /* Linetable entries are ordered by PC values, see the commentary in | |
2267 | symtab.h where `struct linetable' is defined. Thus, the first | |
2268 | entry whose PC is in the range [FUNC_START..FUNC_END[ is the | |
2269 | address we are looking for. */ | |
2270 | for (i = 0; i < l->nitems; i++) | |
2271 | { | |
2272 | struct linetable_entry *item = &(l->item[i]); | |
2273 | ||
2274 | /* Don't use line numbers of zero, they mark special entries in | |
2275 | the table. See the commentary on symtab.h before the | |
2276 | definition of struct linetable. */ | |
2277 | if (item->line > 0 && func_start <= item->pc && item->pc < func_end) | |
2278 | return item->pc; | |
2279 | } | |
2280 | ||
2281 | return func_addr; | |
2282 | } | |
2283 | ||
c906108c SS |
2284 | /* Given a function symbol SYM, find the symtab and line for the start |
2285 | of the function. | |
2286 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
2287 | of real code inside the function. */ | |
2288 | ||
50641945 | 2289 | struct symtab_and_line |
fba45db2 | 2290 | find_function_start_sal (struct symbol *sym, int funfirstline) |
c906108c | 2291 | { |
059acae7 UW |
2292 | struct symtab_and_line sal; |
2293 | ||
2294 | fixup_symbol_section (sym, NULL); | |
2295 | sal = find_pc_sect_line (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)), | |
2296 | SYMBOL_OBJ_SECTION (sym), 0); | |
2297 | ||
2298 | if (funfirstline) | |
2299 | skip_prologue_sal (&sal); | |
bccdca4a | 2300 | |
059acae7 UW |
2301 | return sal; |
2302 | } | |
2303 | ||
2304 | /* Adjust SAL to the first instruction past the function prologue. | |
2305 | If the PC was explicitly specified, the SAL is not changed. | |
2306 | If the line number was explicitly specified, at most the SAL's PC | |
2307 | is updated. If SAL is already past the prologue, then do nothing. */ | |
2308 | void | |
2309 | skip_prologue_sal (struct symtab_and_line *sal) | |
2310 | { | |
2311 | struct symbol *sym; | |
2312 | struct symtab_and_line start_sal; | |
2313 | struct cleanup *old_chain; | |
c906108c | 2314 | CORE_ADDR pc; |
059acae7 UW |
2315 | struct obj_section *section; |
2316 | const char *name; | |
2317 | struct objfile *objfile; | |
2318 | struct gdbarch *gdbarch; | |
edb3359d | 2319 | struct block *b, *function_block; |
c906108c | 2320 | |
059acae7 UW |
2321 | /* Do not change the SAL is PC was specified explicitly. */ |
2322 | if (sal->explicit_pc) | |
2323 | return; | |
6c95b8df PA |
2324 | |
2325 | old_chain = save_current_space_and_thread (); | |
059acae7 | 2326 | switch_to_program_space_and_thread (sal->pspace); |
6c95b8df | 2327 | |
059acae7 UW |
2328 | sym = find_pc_sect_function (sal->pc, sal->section); |
2329 | if (sym != NULL) | |
bccdca4a | 2330 | { |
059acae7 UW |
2331 | fixup_symbol_section (sym, NULL); |
2332 | ||
2333 | pc = BLOCK_START (SYMBOL_BLOCK_VALUE (sym)); | |
2334 | section = SYMBOL_OBJ_SECTION (sym); | |
2335 | name = SYMBOL_LINKAGE_NAME (sym); | |
2336 | objfile = SYMBOL_SYMTAB (sym)->objfile; | |
c906108c | 2337 | } |
059acae7 UW |
2338 | else |
2339 | { | |
2340 | struct minimal_symbol *msymbol | |
2341 | = lookup_minimal_symbol_by_pc_section (sal->pc, sal->section); | |
2342 | if (msymbol == NULL) | |
2343 | { | |
2344 | do_cleanups (old_chain); | |
2345 | return; | |
2346 | } | |
2347 | ||
2348 | pc = SYMBOL_VALUE_ADDRESS (msymbol); | |
2349 | section = SYMBOL_OBJ_SECTION (msymbol); | |
2350 | name = SYMBOL_LINKAGE_NAME (msymbol); | |
2351 | objfile = msymbol_objfile (msymbol); | |
2352 | } | |
2353 | ||
2354 | gdbarch = get_objfile_arch (objfile); | |
2355 | ||
2356 | /* If the function is in an unmapped overlay, use its unmapped LMA address, | |
2357 | so that gdbarch_skip_prologue has something unique to work on. */ | |
2358 | if (section_is_overlay (section) && !section_is_mapped (section)) | |
2359 | pc = overlay_unmapped_address (pc, section); | |
2360 | ||
2361 | /* Skip "first line" of function (which is actually its prologue). */ | |
2362 | pc += gdbarch_deprecated_function_start_offset (gdbarch); | |
2363 | pc = gdbarch_skip_prologue (gdbarch, pc); | |
2364 | ||
2365 | /* For overlays, map pc back into its mapped VMA range. */ | |
2366 | pc = overlay_mapped_address (pc, section); | |
2367 | ||
2368 | /* Calculate line number. */ | |
2369 | start_sal = find_pc_sect_line (pc, section, 0); | |
c906108c | 2370 | |
a433963d | 2371 | /* Check if gdbarch_skip_prologue left us in mid-line, and the next |
c906108c | 2372 | line is still part of the same function. */ |
059acae7 UW |
2373 | if (start_sal.pc != pc |
2374 | && (sym? (BLOCK_START (SYMBOL_BLOCK_VALUE (sym)) <= start_sal.end | |
2375 | && start_sal.end < BLOCK_END (SYMBOL_BLOCK_VALUE (sym))) | |
2376 | : (lookup_minimal_symbol_by_pc_section (start_sal.end, section) | |
2377 | == lookup_minimal_symbol_by_pc_section (pc, section)))) | |
c906108c SS |
2378 | { |
2379 | /* First pc of next line */ | |
059acae7 | 2380 | pc = start_sal.end; |
c906108c | 2381 | /* Recalculate the line number (might not be N+1). */ |
059acae7 | 2382 | start_sal = find_pc_sect_line (pc, section, 0); |
c906108c | 2383 | } |
4309257c PM |
2384 | |
2385 | /* On targets with executable formats that don't have a concept of | |
2386 | constructors (ELF with .init has, PE doesn't), gcc emits a call | |
2387 | to `__main' in `main' between the prologue and before user | |
2388 | code. */ | |
059acae7 UW |
2389 | if (gdbarch_skip_main_prologue_p (gdbarch) |
2390 | && name && strcmp (name, "main") == 0) | |
4309257c | 2391 | { |
d80b854b | 2392 | pc = gdbarch_skip_main_prologue (gdbarch, pc); |
4309257c | 2393 | /* Recalculate the line number (might not be N+1). */ |
059acae7 | 2394 | start_sal = find_pc_sect_line (pc, section, 0); |
4309257c PM |
2395 | } |
2396 | ||
8c7a1ee8 EZ |
2397 | /* If we still don't have a valid source line, try to find the first |
2398 | PC in the lineinfo table that belongs to the same function. This | |
2399 | happens with COFF debug info, which does not seem to have an | |
2400 | entry in lineinfo table for the code after the prologue which has | |
2401 | no direct relation to source. For example, this was found to be | |
2402 | the case with the DJGPP target using "gcc -gcoff" when the | |
2403 | compiler inserted code after the prologue to make sure the stack | |
2404 | is aligned. */ | |
059acae7 | 2405 | if (sym && start_sal.symtab == NULL) |
8c7a1ee8 EZ |
2406 | { |
2407 | pc = skip_prologue_using_lineinfo (pc, SYMBOL_SYMTAB (sym)); | |
2408 | /* Recalculate the line number. */ | |
059acae7 | 2409 | start_sal = find_pc_sect_line (pc, section, 0); |
8c7a1ee8 EZ |
2410 | } |
2411 | ||
059acae7 UW |
2412 | do_cleanups (old_chain); |
2413 | ||
2414 | /* If we're already past the prologue, leave SAL unchanged. Otherwise | |
2415 | forward SAL to the end of the prologue. */ | |
2416 | if (sal->pc >= pc) | |
2417 | return; | |
2418 | ||
2419 | sal->pc = pc; | |
2420 | sal->section = section; | |
2421 | ||
2422 | /* Unless the explicit_line flag was set, update the SAL line | |
2423 | and symtab to correspond to the modified PC location. */ | |
2424 | if (sal->explicit_line) | |
2425 | return; | |
2426 | ||
2427 | sal->symtab = start_sal.symtab; | |
2428 | sal->line = start_sal.line; | |
2429 | sal->end = start_sal.end; | |
c906108c | 2430 | |
edb3359d DJ |
2431 | /* Check if we are now inside an inlined function. If we can, |
2432 | use the call site of the function instead. */ | |
059acae7 | 2433 | b = block_for_pc_sect (sal->pc, sal->section); |
edb3359d DJ |
2434 | function_block = NULL; |
2435 | while (b != NULL) | |
2436 | { | |
2437 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
2438 | function_block = b; | |
2439 | else if (BLOCK_FUNCTION (b) != NULL) | |
2440 | break; | |
2441 | b = BLOCK_SUPERBLOCK (b); | |
2442 | } | |
2443 | if (function_block != NULL | |
2444 | && SYMBOL_LINE (BLOCK_FUNCTION (function_block)) != 0) | |
2445 | { | |
059acae7 UW |
2446 | sal->line = SYMBOL_LINE (BLOCK_FUNCTION (function_block)); |
2447 | sal->symtab = SYMBOL_SYMTAB (BLOCK_FUNCTION (function_block)); | |
edb3359d | 2448 | } |
c906108c | 2449 | } |
50641945 | 2450 | |
c906108c SS |
2451 | /* If P is of the form "operator[ \t]+..." where `...' is |
2452 | some legitimate operator text, return a pointer to the | |
2453 | beginning of the substring of the operator text. | |
2454 | Otherwise, return "". */ | |
2455 | char * | |
fba45db2 | 2456 | operator_chars (char *p, char **end) |
c906108c SS |
2457 | { |
2458 | *end = ""; | |
2459 | if (strncmp (p, "operator", 8)) | |
2460 | return *end; | |
2461 | p += 8; | |
2462 | ||
2463 | /* Don't get faked out by `operator' being part of a longer | |
2464 | identifier. */ | |
c5aa993b | 2465 | if (isalpha (*p) || *p == '_' || *p == '$' || *p == '\0') |
c906108c SS |
2466 | return *end; |
2467 | ||
2468 | /* Allow some whitespace between `operator' and the operator symbol. */ | |
2469 | while (*p == ' ' || *p == '\t') | |
2470 | p++; | |
2471 | ||
2472 | /* Recognize 'operator TYPENAME'. */ | |
2473 | ||
c5aa993b | 2474 | if (isalpha (*p) || *p == '_' || *p == '$') |
c906108c | 2475 | { |
aa1ee363 | 2476 | char *q = p + 1; |
c5aa993b | 2477 | while (isalnum (*q) || *q == '_' || *q == '$') |
c906108c SS |
2478 | q++; |
2479 | *end = q; | |
2480 | return p; | |
2481 | } | |
2482 | ||
53e8ad3d MS |
2483 | while (*p) |
2484 | switch (*p) | |
2485 | { | |
2486 | case '\\': /* regexp quoting */ | |
2487 | if (p[1] == '*') | |
2488 | { | |
2489 | if (p[2] == '=') /* 'operator\*=' */ | |
2490 | *end = p + 3; | |
2491 | else /* 'operator\*' */ | |
2492 | *end = p + 2; | |
2493 | return p; | |
2494 | } | |
2495 | else if (p[1] == '[') | |
2496 | { | |
2497 | if (p[2] == ']') | |
8a3fe4f8 | 2498 | error (_("mismatched quoting on brackets, try 'operator\\[\\]'")); |
53e8ad3d MS |
2499 | else if (p[2] == '\\' && p[3] == ']') |
2500 | { | |
2501 | *end = p + 4; /* 'operator\[\]' */ | |
2502 | return p; | |
2503 | } | |
2504 | else | |
8a3fe4f8 | 2505 | error (_("nothing is allowed between '[' and ']'")); |
53e8ad3d | 2506 | } |
9af17804 | 2507 | else |
53e8ad3d MS |
2508 | { |
2509 | /* Gratuitous qoute: skip it and move on. */ | |
2510 | p++; | |
2511 | continue; | |
2512 | } | |
2513 | break; | |
2514 | case '!': | |
2515 | case '=': | |
2516 | case '*': | |
2517 | case '/': | |
2518 | case '%': | |
2519 | case '^': | |
2520 | if (p[1] == '=') | |
2521 | *end = p + 2; | |
2522 | else | |
2523 | *end = p + 1; | |
2524 | return p; | |
2525 | case '<': | |
2526 | case '>': | |
2527 | case '+': | |
2528 | case '-': | |
2529 | case '&': | |
2530 | case '|': | |
2531 | if (p[0] == '-' && p[1] == '>') | |
2532 | { | |
2533 | /* Struct pointer member operator 'operator->'. */ | |
2534 | if (p[2] == '*') | |
2535 | { | |
2536 | *end = p + 3; /* 'operator->*' */ | |
2537 | return p; | |
2538 | } | |
2539 | else if (p[2] == '\\') | |
2540 | { | |
2541 | *end = p + 4; /* Hopefully 'operator->\*' */ | |
2542 | return p; | |
2543 | } | |
2544 | else | |
2545 | { | |
2546 | *end = p + 2; /* 'operator->' */ | |
2547 | return p; | |
2548 | } | |
2549 | } | |
2550 | if (p[1] == '=' || p[1] == p[0]) | |
2551 | *end = p + 2; | |
2552 | else | |
2553 | *end = p + 1; | |
2554 | return p; | |
2555 | case '~': | |
2556 | case ',': | |
c5aa993b | 2557 | *end = p + 1; |
53e8ad3d MS |
2558 | return p; |
2559 | case '(': | |
2560 | if (p[1] != ')') | |
8a3fe4f8 | 2561 | error (_("`operator ()' must be specified without whitespace in `()'")); |
c5aa993b | 2562 | *end = p + 2; |
53e8ad3d MS |
2563 | return p; |
2564 | case '?': | |
2565 | if (p[1] != ':') | |
8a3fe4f8 | 2566 | error (_("`operator ?:' must be specified without whitespace in `?:'")); |
53e8ad3d MS |
2567 | *end = p + 2; |
2568 | return p; | |
2569 | case '[': | |
2570 | if (p[1] != ']') | |
8a3fe4f8 | 2571 | error (_("`operator []' must be specified without whitespace in `[]'")); |
53e8ad3d MS |
2572 | *end = p + 2; |
2573 | return p; | |
2574 | default: | |
8a3fe4f8 | 2575 | error (_("`operator %s' not supported"), p); |
53e8ad3d MS |
2576 | break; |
2577 | } | |
2578 | ||
c906108c SS |
2579 | *end = ""; |
2580 | return *end; | |
2581 | } | |
c906108c | 2582 | \f |
c5aa993b | 2583 | |
c94fdfd0 EZ |
2584 | /* If FILE is not already in the table of files, return zero; |
2585 | otherwise return non-zero. Optionally add FILE to the table if ADD | |
2586 | is non-zero. If *FIRST is non-zero, forget the old table | |
2587 | contents. */ | |
2588 | static int | |
2589 | filename_seen (const char *file, int add, int *first) | |
c906108c | 2590 | { |
c94fdfd0 EZ |
2591 | /* Table of files seen so far. */ |
2592 | static const char **tab = NULL; | |
c906108c SS |
2593 | /* Allocated size of tab in elements. |
2594 | Start with one 256-byte block (when using GNU malloc.c). | |
2595 | 24 is the malloc overhead when range checking is in effect. */ | |
2596 | static int tab_alloc_size = (256 - 24) / sizeof (char *); | |
2597 | /* Current size of tab in elements. */ | |
2598 | static int tab_cur_size; | |
c94fdfd0 | 2599 | const char **p; |
c906108c SS |
2600 | |
2601 | if (*first) | |
2602 | { | |
2603 | if (tab == NULL) | |
c94fdfd0 | 2604 | tab = (const char **) xmalloc (tab_alloc_size * sizeof (*tab)); |
c906108c SS |
2605 | tab_cur_size = 0; |
2606 | } | |
2607 | ||
c94fdfd0 | 2608 | /* Is FILE in tab? */ |
c906108c | 2609 | for (p = tab; p < tab + tab_cur_size; p++) |
c94fdfd0 EZ |
2610 | if (strcmp (*p, file) == 0) |
2611 | return 1; | |
2612 | ||
2613 | /* No; maybe add it to tab. */ | |
2614 | if (add) | |
c906108c | 2615 | { |
c94fdfd0 EZ |
2616 | if (tab_cur_size == tab_alloc_size) |
2617 | { | |
2618 | tab_alloc_size *= 2; | |
2619 | tab = (const char **) xrealloc ((char *) tab, | |
2620 | tab_alloc_size * sizeof (*tab)); | |
2621 | } | |
2622 | tab[tab_cur_size++] = file; | |
c906108c | 2623 | } |
c906108c | 2624 | |
c94fdfd0 EZ |
2625 | return 0; |
2626 | } | |
2627 | ||
2628 | /* Slave routine for sources_info. Force line breaks at ,'s. | |
2629 | NAME is the name to print and *FIRST is nonzero if this is the first | |
2630 | name printed. Set *FIRST to zero. */ | |
2631 | static void | |
d092d1a2 | 2632 | output_source_filename (const char *name, int *first) |
c94fdfd0 EZ |
2633 | { |
2634 | /* Since a single source file can result in several partial symbol | |
2635 | tables, we need to avoid printing it more than once. Note: if | |
2636 | some of the psymtabs are read in and some are not, it gets | |
2637 | printed both under "Source files for which symbols have been | |
2638 | read" and "Source files for which symbols will be read in on | |
2639 | demand". I consider this a reasonable way to deal with the | |
2640 | situation. I'm not sure whether this can also happen for | |
2641 | symtabs; it doesn't hurt to check. */ | |
2642 | ||
2643 | /* Was NAME already seen? */ | |
2644 | if (filename_seen (name, 1, first)) | |
2645 | { | |
2646 | /* Yes; don't print it again. */ | |
2647 | return; | |
2648 | } | |
2649 | /* No; print it and reset *FIRST. */ | |
c906108c SS |
2650 | if (*first) |
2651 | { | |
2652 | *first = 0; | |
2653 | } | |
2654 | else | |
2655 | { | |
2656 | printf_filtered (", "); | |
2657 | } | |
2658 | ||
2659 | wrap_here (""); | |
2660 | fputs_filtered (name, gdb_stdout); | |
c5aa993b | 2661 | } |
c906108c | 2662 | |
ccefe4c4 TT |
2663 | /* A callback for map_partial_symbol_filenames. */ |
2664 | static void | |
2665 | output_partial_symbol_filename (const char *fullname, const char *filename, | |
2666 | void *data) | |
2667 | { | |
2668 | output_source_filename (fullname ? fullname : filename, data); | |
2669 | } | |
2670 | ||
c906108c | 2671 | static void |
fba45db2 | 2672 | sources_info (char *ignore, int from_tty) |
c906108c | 2673 | { |
52f0bd74 AC |
2674 | struct symtab *s; |
2675 | struct partial_symtab *ps; | |
2676 | struct objfile *objfile; | |
c906108c | 2677 | int first; |
c5aa993b | 2678 | |
c906108c SS |
2679 | if (!have_full_symbols () && !have_partial_symbols ()) |
2680 | { | |
8a3fe4f8 | 2681 | error (_("No symbol table is loaded. Use the \"file\" command.")); |
c906108c | 2682 | } |
c5aa993b | 2683 | |
c906108c SS |
2684 | printf_filtered ("Source files for which symbols have been read in:\n\n"); |
2685 | ||
2686 | first = 1; | |
2687 | ALL_SYMTABS (objfile, s) | |
c5aa993b | 2688 | { |
d092d1a2 DJ |
2689 | const char *fullname = symtab_to_fullname (s); |
2690 | output_source_filename (fullname ? fullname : s->filename, &first); | |
c5aa993b | 2691 | } |
c906108c | 2692 | printf_filtered ("\n\n"); |
c5aa993b | 2693 | |
c906108c SS |
2694 | printf_filtered ("Source files for which symbols will be read in on demand:\n\n"); |
2695 | ||
2696 | first = 1; | |
ccefe4c4 | 2697 | map_partial_symbol_filenames (output_partial_symbol_filename, &first); |
c906108c SS |
2698 | printf_filtered ("\n"); |
2699 | } | |
2700 | ||
2701 | static int | |
ccefe4c4 | 2702 | file_matches (const char *file, char *files[], int nfiles) |
c906108c SS |
2703 | { |
2704 | int i; | |
2705 | ||
2706 | if (file != NULL && nfiles != 0) | |
2707 | { | |
2708 | for (i = 0; i < nfiles; i++) | |
c5aa993b | 2709 | { |
31889e00 | 2710 | if (strcmp (files[i], lbasename (file)) == 0) |
c5aa993b JM |
2711 | return 1; |
2712 | } | |
c906108c SS |
2713 | } |
2714 | else if (nfiles == 0) | |
2715 | return 1; | |
2716 | return 0; | |
2717 | } | |
2718 | ||
2719 | /* Free any memory associated with a search. */ | |
2720 | void | |
fba45db2 | 2721 | free_search_symbols (struct symbol_search *symbols) |
c906108c SS |
2722 | { |
2723 | struct symbol_search *p; | |
2724 | struct symbol_search *next; | |
2725 | ||
2726 | for (p = symbols; p != NULL; p = next) | |
2727 | { | |
2728 | next = p->next; | |
b8c9b27d | 2729 | xfree (p); |
c906108c SS |
2730 | } |
2731 | } | |
2732 | ||
5bd98722 AC |
2733 | static void |
2734 | do_free_search_symbols_cleanup (void *symbols) | |
2735 | { | |
2736 | free_search_symbols (symbols); | |
2737 | } | |
2738 | ||
2739 | struct cleanup * | |
2740 | make_cleanup_free_search_symbols (struct symbol_search *symbols) | |
2741 | { | |
2742 | return make_cleanup (do_free_search_symbols_cleanup, symbols); | |
2743 | } | |
2744 | ||
434d2d4f DJ |
2745 | /* Helper function for sort_search_symbols and qsort. Can only |
2746 | sort symbols, not minimal symbols. */ | |
2747 | static int | |
2748 | compare_search_syms (const void *sa, const void *sb) | |
2749 | { | |
2750 | struct symbol_search **sym_a = (struct symbol_search **) sa; | |
2751 | struct symbol_search **sym_b = (struct symbol_search **) sb; | |
2752 | ||
de5ad195 DC |
2753 | return strcmp (SYMBOL_PRINT_NAME ((*sym_a)->symbol), |
2754 | SYMBOL_PRINT_NAME ((*sym_b)->symbol)); | |
434d2d4f DJ |
2755 | } |
2756 | ||
2757 | /* Sort the ``nfound'' symbols in the list after prevtail. Leave | |
2758 | prevtail where it is, but update its next pointer to point to | |
2759 | the first of the sorted symbols. */ | |
2760 | static struct symbol_search * | |
2761 | sort_search_symbols (struct symbol_search *prevtail, int nfound) | |
2762 | { | |
2763 | struct symbol_search **symbols, *symp, *old_next; | |
2764 | int i; | |
2765 | ||
2766 | symbols = (struct symbol_search **) xmalloc (sizeof (struct symbol_search *) | |
2767 | * nfound); | |
2768 | symp = prevtail->next; | |
2769 | for (i = 0; i < nfound; i++) | |
2770 | { | |
2771 | symbols[i] = symp; | |
2772 | symp = symp->next; | |
2773 | } | |
2774 | /* Generally NULL. */ | |
2775 | old_next = symp; | |
2776 | ||
2777 | qsort (symbols, nfound, sizeof (struct symbol_search *), | |
2778 | compare_search_syms); | |
2779 | ||
2780 | symp = prevtail; | |
2781 | for (i = 0; i < nfound; i++) | |
2782 | { | |
2783 | symp->next = symbols[i]; | |
2784 | symp = symp->next; | |
2785 | } | |
2786 | symp->next = old_next; | |
2787 | ||
8ed32cc0 | 2788 | xfree (symbols); |
434d2d4f DJ |
2789 | return symp; |
2790 | } | |
5bd98722 | 2791 | |
ccefe4c4 TT |
2792 | /* An object of this type is passed as the user_data to the |
2793 | expand_symtabs_matching method. */ | |
2794 | struct search_symbols_data | |
2795 | { | |
2796 | int nfiles; | |
2797 | char **files; | |
2798 | char *regexp; | |
2799 | }; | |
2800 | ||
2801 | /* A callback for expand_symtabs_matching. */ | |
2802 | static int | |
2803 | search_symbols_file_matches (const char *filename, void *user_data) | |
2804 | { | |
2805 | struct search_symbols_data *data = user_data; | |
2806 | return file_matches (filename, data->files, data->nfiles); | |
2807 | } | |
2808 | ||
2809 | /* A callback for expand_symtabs_matching. */ | |
2810 | static int | |
2811 | search_symbols_name_matches (const char *symname, void *user_data) | |
2812 | { | |
2813 | struct search_symbols_data *data = user_data; | |
2814 | return data->regexp == NULL || re_exec (symname); | |
2815 | } | |
2816 | ||
c906108c SS |
2817 | /* Search the symbol table for matches to the regular expression REGEXP, |
2818 | returning the results in *MATCHES. | |
2819 | ||
2820 | Only symbols of KIND are searched: | |
176620f1 EZ |
2821 | FUNCTIONS_DOMAIN - search all functions |
2822 | TYPES_DOMAIN - search all type names | |
176620f1 | 2823 | VARIABLES_DOMAIN - search all symbols, excluding functions, type names, |
c5aa993b | 2824 | and constants (enums) |
c906108c SS |
2825 | |
2826 | free_search_symbols should be called when *MATCHES is no longer needed. | |
434d2d4f DJ |
2827 | |
2828 | The results are sorted locally; each symtab's global and static blocks are | |
2829 | separately alphabetized. | |
c5aa993b | 2830 | */ |
c906108c | 2831 | void |
176620f1 | 2832 | search_symbols (char *regexp, domain_enum kind, int nfiles, char *files[], |
fd118b61 | 2833 | struct symbol_search **matches) |
c906108c | 2834 | { |
52f0bd74 | 2835 | struct symtab *s; |
52f0bd74 | 2836 | struct blockvector *bv; |
52f0bd74 AC |
2837 | struct block *b; |
2838 | int i = 0; | |
de4f826b | 2839 | struct dict_iterator iter; |
52f0bd74 | 2840 | struct symbol *sym; |
c906108c SS |
2841 | struct objfile *objfile; |
2842 | struct minimal_symbol *msymbol; | |
2843 | char *val; | |
2844 | int found_misc = 0; | |
2845 | static enum minimal_symbol_type types[] | |
c5aa993b JM |
2846 | = |
2847 | {mst_data, mst_text, mst_abs, mst_unknown}; | |
c906108c | 2848 | static enum minimal_symbol_type types2[] |
c5aa993b JM |
2849 | = |
2850 | {mst_bss, mst_file_text, mst_abs, mst_unknown}; | |
c906108c | 2851 | static enum minimal_symbol_type types3[] |
c5aa993b JM |
2852 | = |
2853 | {mst_file_data, mst_solib_trampoline, mst_abs, mst_unknown}; | |
c906108c | 2854 | static enum minimal_symbol_type types4[] |
c5aa993b JM |
2855 | = |
2856 | {mst_file_bss, mst_text, mst_abs, mst_unknown}; | |
c906108c SS |
2857 | enum minimal_symbol_type ourtype; |
2858 | enum minimal_symbol_type ourtype2; | |
2859 | enum minimal_symbol_type ourtype3; | |
2860 | enum minimal_symbol_type ourtype4; | |
2861 | struct symbol_search *sr; | |
2862 | struct symbol_search *psr; | |
2863 | struct symbol_search *tail; | |
2864 | struct cleanup *old_chain = NULL; | |
ccefe4c4 | 2865 | struct search_symbols_data datum; |
c906108c | 2866 | |
176620f1 | 2867 | if (kind < VARIABLES_DOMAIN) |
8a3fe4f8 | 2868 | error (_("must search on specific domain")); |
c906108c | 2869 | |
176620f1 EZ |
2870 | ourtype = types[(int) (kind - VARIABLES_DOMAIN)]; |
2871 | ourtype2 = types2[(int) (kind - VARIABLES_DOMAIN)]; | |
2872 | ourtype3 = types3[(int) (kind - VARIABLES_DOMAIN)]; | |
2873 | ourtype4 = types4[(int) (kind - VARIABLES_DOMAIN)]; | |
c906108c SS |
2874 | |
2875 | sr = *matches = NULL; | |
2876 | tail = NULL; | |
2877 | ||
2878 | if (regexp != NULL) | |
2879 | { | |
2880 | /* Make sure spacing is right for C++ operators. | |
2881 | This is just a courtesy to make the matching less sensitive | |
2882 | to how many spaces the user leaves between 'operator' | |
2883 | and <TYPENAME> or <OPERATOR>. */ | |
2884 | char *opend; | |
2885 | char *opname = operator_chars (regexp, &opend); | |
2886 | if (*opname) | |
c5aa993b JM |
2887 | { |
2888 | int fix = -1; /* -1 means ok; otherwise number of spaces needed. */ | |
2889 | if (isalpha (*opname) || *opname == '_' || *opname == '$') | |
2890 | { | |
2891 | /* There should 1 space between 'operator' and 'TYPENAME'. */ | |
2892 | if (opname[-1] != ' ' || opname[-2] == ' ') | |
2893 | fix = 1; | |
2894 | } | |
2895 | else | |
2896 | { | |
2897 | /* There should 0 spaces between 'operator' and 'OPERATOR'. */ | |
2898 | if (opname[-1] == ' ') | |
2899 | fix = 0; | |
2900 | } | |
2901 | /* If wrong number of spaces, fix it. */ | |
2902 | if (fix >= 0) | |
2903 | { | |
045f55a6 | 2904 | char *tmp = (char *) alloca (8 + fix + strlen (opname) + 1); |
c5aa993b JM |
2905 | sprintf (tmp, "operator%.*s%s", fix, " ", opname); |
2906 | regexp = tmp; | |
2907 | } | |
2908 | } | |
2909 | ||
c906108c | 2910 | if (0 != (val = re_comp (regexp))) |
8a3fe4f8 | 2911 | error (_("Invalid regexp (%s): %s"), val, regexp); |
c906108c SS |
2912 | } |
2913 | ||
2914 | /* Search through the partial symtabs *first* for all symbols | |
2915 | matching the regexp. That way we don't have to reproduce all of | |
2916 | the machinery below. */ | |
2917 | ||
ccefe4c4 TT |
2918 | datum.nfiles = nfiles; |
2919 | datum.files = files; | |
2920 | datum.regexp = regexp; | |
2921 | ALL_OBJFILES (objfile) | |
c5aa993b | 2922 | { |
ccefe4c4 TT |
2923 | if (objfile->sf) |
2924 | objfile->sf->qf->expand_symtabs_matching (objfile, | |
2925 | search_symbols_file_matches, | |
2926 | search_symbols_name_matches, | |
2927 | kind, | |
2928 | &datum); | |
c5aa993b | 2929 | } |
c906108c SS |
2930 | |
2931 | /* Here, we search through the minimal symbol tables for functions | |
2932 | and variables that match, and force their symbols to be read. | |
2933 | This is in particular necessary for demangled variable names, | |
2934 | which are no longer put into the partial symbol tables. | |
2935 | The symbol will then be found during the scan of symtabs below. | |
2936 | ||
2937 | For functions, find_pc_symtab should succeed if we have debug info | |
2938 | for the function, for variables we have to call lookup_symbol | |
2939 | to determine if the variable has debug info. | |
2940 | If the lookup fails, set found_misc so that we will rescan to print | |
2941 | any matching symbols without debug info. | |
c5aa993b | 2942 | */ |
c906108c | 2943 | |
176620f1 | 2944 | if (nfiles == 0 && (kind == VARIABLES_DOMAIN || kind == FUNCTIONS_DOMAIN)) |
c906108c SS |
2945 | { |
2946 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 2947 | { |
89295b4d PP |
2948 | QUIT; |
2949 | ||
c5aa993b JM |
2950 | if (MSYMBOL_TYPE (msymbol) == ourtype || |
2951 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
2952 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
2953 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
2954 | { | |
25120b0d DC |
2955 | if (regexp == NULL |
2956 | || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0) | |
c5aa993b JM |
2957 | { |
2958 | if (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol))) | |
2959 | { | |
b1262a02 DC |
2960 | /* FIXME: carlton/2003-02-04: Given that the |
2961 | semantics of lookup_symbol keeps on changing | |
2962 | slightly, it would be a nice idea if we had a | |
2963 | function lookup_symbol_minsym that found the | |
2964 | symbol associated to a given minimal symbol (if | |
2965 | any). */ | |
176620f1 | 2966 | if (kind == FUNCTIONS_DOMAIN |
2335f48e | 2967 | || lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
b1262a02 | 2968 | (struct block *) NULL, |
2570f2b7 | 2969 | VAR_DOMAIN, 0) |
53c5240f | 2970 | == NULL) |
b1262a02 | 2971 | found_misc = 1; |
c5aa993b JM |
2972 | } |
2973 | } | |
2974 | } | |
2975 | } | |
c906108c SS |
2976 | } |
2977 | ||
11309657 | 2978 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
2979 | { |
2980 | bv = BLOCKVECTOR (s); | |
c5aa993b JM |
2981 | for (i = GLOBAL_BLOCK; i <= STATIC_BLOCK; i++) |
2982 | { | |
434d2d4f DJ |
2983 | struct symbol_search *prevtail = tail; |
2984 | int nfound = 0; | |
c5aa993b | 2985 | b = BLOCKVECTOR_BLOCK (bv, i); |
de4f826b | 2986 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 2987 | { |
cb1df416 | 2988 | struct symtab *real_symtab = SYMBOL_SYMTAB (sym); |
c5aa993b | 2989 | QUIT; |
cb1df416 DJ |
2990 | |
2991 | if (file_matches (real_symtab->filename, files, nfiles) | |
25120b0d DC |
2992 | && ((regexp == NULL |
2993 | || re_exec (SYMBOL_NATURAL_NAME (sym)) != 0) | |
176620f1 | 2994 | && ((kind == VARIABLES_DOMAIN && SYMBOL_CLASS (sym) != LOC_TYPEDEF |
0fe7935b | 2995 | && SYMBOL_CLASS (sym) != LOC_UNRESOLVED |
c5aa993b JM |
2996 | && SYMBOL_CLASS (sym) != LOC_BLOCK |
2997 | && SYMBOL_CLASS (sym) != LOC_CONST) | |
176620f1 | 2998 | || (kind == FUNCTIONS_DOMAIN && SYMBOL_CLASS (sym) == LOC_BLOCK) |
bd2e94ce | 2999 | || (kind == TYPES_DOMAIN && SYMBOL_CLASS (sym) == LOC_TYPEDEF)))) |
c5aa993b JM |
3000 | { |
3001 | /* match */ | |
3002 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
3003 | psr->block = i; | |
cb1df416 | 3004 | psr->symtab = real_symtab; |
c5aa993b JM |
3005 | psr->symbol = sym; |
3006 | psr->msymbol = NULL; | |
3007 | psr->next = NULL; | |
3008 | if (tail == NULL) | |
434d2d4f | 3009 | sr = psr; |
c5aa993b JM |
3010 | else |
3011 | tail->next = psr; | |
3012 | tail = psr; | |
434d2d4f DJ |
3013 | nfound ++; |
3014 | } | |
3015 | } | |
3016 | if (nfound > 0) | |
3017 | { | |
3018 | if (prevtail == NULL) | |
3019 | { | |
3020 | struct symbol_search dummy; | |
3021 | ||
3022 | dummy.next = sr; | |
3023 | tail = sort_search_symbols (&dummy, nfound); | |
3024 | sr = dummy.next; | |
3025 | ||
3026 | old_chain = make_cleanup_free_search_symbols (sr); | |
c5aa993b | 3027 | } |
434d2d4f DJ |
3028 | else |
3029 | tail = sort_search_symbols (prevtail, nfound); | |
c5aa993b JM |
3030 | } |
3031 | } | |
c5aa993b | 3032 | } |
c906108c SS |
3033 | |
3034 | /* If there are no eyes, avoid all contact. I mean, if there are | |
3035 | no debug symbols, then print directly from the msymbol_vector. */ | |
3036 | ||
176620f1 | 3037 | if (found_misc || kind != FUNCTIONS_DOMAIN) |
c906108c SS |
3038 | { |
3039 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b | 3040 | { |
89295b4d PP |
3041 | QUIT; |
3042 | ||
c5aa993b JM |
3043 | if (MSYMBOL_TYPE (msymbol) == ourtype || |
3044 | MSYMBOL_TYPE (msymbol) == ourtype2 || | |
3045 | MSYMBOL_TYPE (msymbol) == ourtype3 || | |
3046 | MSYMBOL_TYPE (msymbol) == ourtype4) | |
3047 | { | |
25120b0d DC |
3048 | if (regexp == NULL |
3049 | || re_exec (SYMBOL_NATURAL_NAME (msymbol)) != 0) | |
c5aa993b JM |
3050 | { |
3051 | /* Functions: Look up by address. */ | |
176620f1 | 3052 | if (kind != FUNCTIONS_DOMAIN || |
c5aa993b JM |
3053 | (0 == find_pc_symtab (SYMBOL_VALUE_ADDRESS (msymbol)))) |
3054 | { | |
3055 | /* Variables/Absolutes: Look up by name */ | |
2335f48e | 3056 | if (lookup_symbol (SYMBOL_LINKAGE_NAME (msymbol), |
2570f2b7 UW |
3057 | (struct block *) NULL, VAR_DOMAIN, 0) |
3058 | == NULL) | |
c5aa993b JM |
3059 | { |
3060 | /* match */ | |
3061 | psr = (struct symbol_search *) xmalloc (sizeof (struct symbol_search)); | |
3062 | psr->block = i; | |
3063 | psr->msymbol = msymbol; | |
3064 | psr->symtab = NULL; | |
3065 | psr->symbol = NULL; | |
3066 | psr->next = NULL; | |
3067 | if (tail == NULL) | |
3068 | { | |
3069 | sr = psr; | |
5bd98722 | 3070 | old_chain = make_cleanup_free_search_symbols (sr); |
c5aa993b JM |
3071 | } |
3072 | else | |
3073 | tail->next = psr; | |
3074 | tail = psr; | |
3075 | } | |
3076 | } | |
3077 | } | |
3078 | } | |
3079 | } | |
c906108c SS |
3080 | } |
3081 | ||
3082 | *matches = sr; | |
3083 | if (sr != NULL) | |
3084 | discard_cleanups (old_chain); | |
3085 | } | |
3086 | ||
3087 | /* Helper function for symtab_symbol_info, this function uses | |
3088 | the data returned from search_symbols() to print information | |
3089 | regarding the match to gdb_stdout. | |
c5aa993b | 3090 | */ |
c906108c | 3091 | static void |
176620f1 | 3092 | print_symbol_info (domain_enum kind, struct symtab *s, struct symbol *sym, |
fba45db2 | 3093 | int block, char *last) |
c906108c SS |
3094 | { |
3095 | if (last == NULL || strcmp (last, s->filename) != 0) | |
3096 | { | |
3097 | fputs_filtered ("\nFile ", gdb_stdout); | |
3098 | fputs_filtered (s->filename, gdb_stdout); | |
3099 | fputs_filtered (":\n", gdb_stdout); | |
3100 | } | |
3101 | ||
176620f1 | 3102 | if (kind != TYPES_DOMAIN && block == STATIC_BLOCK) |
c906108c | 3103 | printf_filtered ("static "); |
c5aa993b | 3104 | |
c906108c | 3105 | /* Typedef that is not a C++ class */ |
176620f1 EZ |
3106 | if (kind == TYPES_DOMAIN |
3107 | && SYMBOL_DOMAIN (sym) != STRUCT_DOMAIN) | |
a5238fbc | 3108 | typedef_print (SYMBOL_TYPE (sym), sym, gdb_stdout); |
c906108c | 3109 | /* variable, func, or typedef-that-is-c++-class */ |
176620f1 EZ |
3110 | else if (kind < TYPES_DOMAIN || |
3111 | (kind == TYPES_DOMAIN && | |
3112 | SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)) | |
c906108c SS |
3113 | { |
3114 | type_print (SYMBOL_TYPE (sym), | |
c5aa993b | 3115 | (SYMBOL_CLASS (sym) == LOC_TYPEDEF |
de5ad195 | 3116 | ? "" : SYMBOL_PRINT_NAME (sym)), |
c5aa993b | 3117 | gdb_stdout, 0); |
c906108c SS |
3118 | |
3119 | printf_filtered (";\n"); | |
3120 | } | |
c906108c SS |
3121 | } |
3122 | ||
3123 | /* This help function for symtab_symbol_info() prints information | |
3124 | for non-debugging symbols to gdb_stdout. | |
c5aa993b | 3125 | */ |
c906108c | 3126 | static void |
fba45db2 | 3127 | print_msymbol_info (struct minimal_symbol *msymbol) |
c906108c | 3128 | { |
d80b854b | 3129 | struct gdbarch *gdbarch = get_objfile_arch (msymbol_objfile (msymbol)); |
3ac4495a MS |
3130 | char *tmp; |
3131 | ||
d80b854b | 3132 | if (gdbarch_addr_bit (gdbarch) <= 32) |
bb599908 PH |
3133 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol) |
3134 | & (CORE_ADDR) 0xffffffff, | |
3135 | 8); | |
3ac4495a | 3136 | else |
bb599908 PH |
3137 | tmp = hex_string_custom (SYMBOL_VALUE_ADDRESS (msymbol), |
3138 | 16); | |
3ac4495a | 3139 | printf_filtered ("%s %s\n", |
de5ad195 | 3140 | tmp, SYMBOL_PRINT_NAME (msymbol)); |
c906108c SS |
3141 | } |
3142 | ||
3143 | /* This is the guts of the commands "info functions", "info types", and | |
3144 | "info variables". It calls search_symbols to find all matches and then | |
3145 | print_[m]symbol_info to print out some useful information about the | |
3146 | matches. | |
c5aa993b | 3147 | */ |
c906108c | 3148 | static void |
176620f1 | 3149 | symtab_symbol_info (char *regexp, domain_enum kind, int from_tty) |
c906108c SS |
3150 | { |
3151 | static char *classnames[] | |
c5aa993b JM |
3152 | = |
3153 | {"variable", "function", "type", "method"}; | |
c906108c SS |
3154 | struct symbol_search *symbols; |
3155 | struct symbol_search *p; | |
3156 | struct cleanup *old_chain; | |
3157 | char *last_filename = NULL; | |
3158 | int first = 1; | |
3159 | ||
3160 | /* must make sure that if we're interrupted, symbols gets freed */ | |
3161 | search_symbols (regexp, kind, 0, (char **) NULL, &symbols); | |
5bd98722 | 3162 | old_chain = make_cleanup_free_search_symbols (symbols); |
c906108c SS |
3163 | |
3164 | printf_filtered (regexp | |
c5aa993b JM |
3165 | ? "All %ss matching regular expression \"%s\":\n" |
3166 | : "All defined %ss:\n", | |
176620f1 | 3167 | classnames[(int) (kind - VARIABLES_DOMAIN)], regexp); |
c906108c SS |
3168 | |
3169 | for (p = symbols; p != NULL; p = p->next) | |
3170 | { | |
3171 | QUIT; | |
3172 | ||
3173 | if (p->msymbol != NULL) | |
c5aa993b JM |
3174 | { |
3175 | if (first) | |
3176 | { | |
3177 | printf_filtered ("\nNon-debugging symbols:\n"); | |
3178 | first = 0; | |
3179 | } | |
3180 | print_msymbol_info (p->msymbol); | |
3181 | } | |
c906108c | 3182 | else |
c5aa993b JM |
3183 | { |
3184 | print_symbol_info (kind, | |
3185 | p->symtab, | |
3186 | p->symbol, | |
3187 | p->block, | |
3188 | last_filename); | |
3189 | last_filename = p->symtab->filename; | |
3190 | } | |
c906108c SS |
3191 | } |
3192 | ||
3193 | do_cleanups (old_chain); | |
3194 | } | |
3195 | ||
3196 | static void | |
fba45db2 | 3197 | variables_info (char *regexp, int from_tty) |
c906108c | 3198 | { |
176620f1 | 3199 | symtab_symbol_info (regexp, VARIABLES_DOMAIN, from_tty); |
c906108c SS |
3200 | } |
3201 | ||
3202 | static void | |
fba45db2 | 3203 | functions_info (char *regexp, int from_tty) |
c906108c | 3204 | { |
176620f1 | 3205 | symtab_symbol_info (regexp, FUNCTIONS_DOMAIN, from_tty); |
c906108c SS |
3206 | } |
3207 | ||
357e46e7 | 3208 | |
c906108c | 3209 | static void |
fba45db2 | 3210 | types_info (char *regexp, int from_tty) |
c906108c | 3211 | { |
176620f1 | 3212 | symtab_symbol_info (regexp, TYPES_DOMAIN, from_tty); |
c906108c SS |
3213 | } |
3214 | ||
c906108c | 3215 | /* Breakpoint all functions matching regular expression. */ |
8926118c | 3216 | |
8b93c638 | 3217 | void |
fba45db2 | 3218 | rbreak_command_wrapper (char *regexp, int from_tty) |
8b93c638 JM |
3219 | { |
3220 | rbreak_command (regexp, from_tty); | |
3221 | } | |
8926118c | 3222 | |
95a42b64 TT |
3223 | /* A cleanup function that calls end_rbreak_breakpoints. */ |
3224 | ||
3225 | static void | |
3226 | do_end_rbreak_breakpoints (void *ignore) | |
3227 | { | |
3228 | end_rbreak_breakpoints (); | |
3229 | } | |
3230 | ||
c906108c | 3231 | static void |
fba45db2 | 3232 | rbreak_command (char *regexp, int from_tty) |
c906108c SS |
3233 | { |
3234 | struct symbol_search *ss; | |
3235 | struct symbol_search *p; | |
3236 | struct cleanup *old_chain; | |
95a42b64 TT |
3237 | char *string = NULL; |
3238 | int len = 0; | |
c906108c | 3239 | |
176620f1 | 3240 | search_symbols (regexp, FUNCTIONS_DOMAIN, 0, (char **) NULL, &ss); |
5bd98722 | 3241 | old_chain = make_cleanup_free_search_symbols (ss); |
95a42b64 | 3242 | make_cleanup (free_current_contents, &string); |
c906108c | 3243 | |
95a42b64 TT |
3244 | start_rbreak_breakpoints (); |
3245 | make_cleanup (do_end_rbreak_breakpoints, NULL); | |
c906108c SS |
3246 | for (p = ss; p != NULL; p = p->next) |
3247 | { | |
3248 | if (p->msymbol == NULL) | |
c5aa993b | 3249 | { |
95a42b64 TT |
3250 | int newlen = (strlen (p->symtab->filename) |
3251 | + strlen (SYMBOL_LINKAGE_NAME (p->symbol)) | |
3252 | + 4); | |
3253 | if (newlen > len) | |
3254 | { | |
3255 | string = xrealloc (string, newlen); | |
3256 | len = newlen; | |
3257 | } | |
c5aa993b JM |
3258 | strcpy (string, p->symtab->filename); |
3259 | strcat (string, ":'"); | |
2335f48e | 3260 | strcat (string, SYMBOL_LINKAGE_NAME (p->symbol)); |
c5aa993b JM |
3261 | strcat (string, "'"); |
3262 | break_command (string, from_tty); | |
176620f1 | 3263 | print_symbol_info (FUNCTIONS_DOMAIN, |
c5aa993b JM |
3264 | p->symtab, |
3265 | p->symbol, | |
3266 | p->block, | |
3267 | p->symtab->filename); | |
3268 | } | |
c906108c | 3269 | else |
c5aa993b | 3270 | { |
95a42b64 TT |
3271 | int newlen = (strlen (SYMBOL_LINKAGE_NAME (p->msymbol)) |
3272 | + 3); | |
3273 | if (newlen > len) | |
3274 | { | |
3275 | string = xrealloc (string, newlen); | |
3276 | len = newlen; | |
3277 | } | |
6214f497 DJ |
3278 | strcpy (string, "'"); |
3279 | strcat (string, SYMBOL_LINKAGE_NAME (p->msymbol)); | |
3280 | strcat (string, "'"); | |
3281 | ||
3282 | break_command (string, from_tty); | |
c5aa993b | 3283 | printf_filtered ("<function, no debug info> %s;\n", |
de5ad195 | 3284 | SYMBOL_PRINT_NAME (p->msymbol)); |
c5aa993b | 3285 | } |
c906108c SS |
3286 | } |
3287 | ||
3288 | do_cleanups (old_chain); | |
3289 | } | |
c906108c | 3290 | \f |
c5aa993b | 3291 | |
c906108c SS |
3292 | /* Helper routine for make_symbol_completion_list. */ |
3293 | ||
3294 | static int return_val_size; | |
3295 | static int return_val_index; | |
3296 | static char **return_val; | |
3297 | ||
3298 | #define COMPLETION_LIST_ADD_SYMBOL(symbol, sym_text, len, text, word) \ | |
c906108c | 3299 | completion_list_add_name \ |
2335f48e | 3300 | (SYMBOL_NATURAL_NAME (symbol), (sym_text), (len), (text), (word)) |
c906108c SS |
3301 | |
3302 | /* Test to see if the symbol specified by SYMNAME (which is already | |
c5aa993b JM |
3303 | demangled for C++ symbols) matches SYM_TEXT in the first SYM_TEXT_LEN |
3304 | characters. If so, add it to the current completion list. */ | |
c906108c SS |
3305 | |
3306 | static void | |
fba45db2 KB |
3307 | completion_list_add_name (char *symname, char *sym_text, int sym_text_len, |
3308 | char *text, char *word) | |
c906108c SS |
3309 | { |
3310 | int newsize; | |
3311 | int i; | |
3312 | ||
3313 | /* clip symbols that cannot match */ | |
3314 | ||
3315 | if (strncmp (symname, sym_text, sym_text_len) != 0) | |
3316 | { | |
3317 | return; | |
3318 | } | |
3319 | ||
c906108c SS |
3320 | /* We have a match for a completion, so add SYMNAME to the current list |
3321 | of matches. Note that the name is moved to freshly malloc'd space. */ | |
3322 | ||
3323 | { | |
3324 | char *new; | |
3325 | if (word == sym_text) | |
3326 | { | |
3327 | new = xmalloc (strlen (symname) + 5); | |
3328 | strcpy (new, symname); | |
3329 | } | |
3330 | else if (word > sym_text) | |
3331 | { | |
3332 | /* Return some portion of symname. */ | |
3333 | new = xmalloc (strlen (symname) + 5); | |
3334 | strcpy (new, symname + (word - sym_text)); | |
3335 | } | |
3336 | else | |
3337 | { | |
3338 | /* Return some of SYM_TEXT plus symname. */ | |
3339 | new = xmalloc (strlen (symname) + (sym_text - word) + 5); | |
3340 | strncpy (new, word, sym_text - word); | |
3341 | new[sym_text - word] = '\0'; | |
3342 | strcat (new, symname); | |
3343 | } | |
3344 | ||
c906108c SS |
3345 | if (return_val_index + 3 > return_val_size) |
3346 | { | |
3347 | newsize = (return_val_size *= 2) * sizeof (char *); | |
3348 | return_val = (char **) xrealloc ((char *) return_val, newsize); | |
3349 | } | |
3350 | return_val[return_val_index++] = new; | |
3351 | return_val[return_val_index] = NULL; | |
3352 | } | |
3353 | } | |
3354 | ||
69636828 AF |
3355 | /* ObjC: In case we are completing on a selector, look as the msymbol |
3356 | again and feed all the selectors into the mill. */ | |
3357 | ||
3358 | static void | |
3359 | completion_list_objc_symbol (struct minimal_symbol *msymbol, char *sym_text, | |
3360 | int sym_text_len, char *text, char *word) | |
3361 | { | |
3362 | static char *tmp = NULL; | |
3363 | static unsigned int tmplen = 0; | |
9af17804 | 3364 | |
69636828 AF |
3365 | char *method, *category, *selector; |
3366 | char *tmp2 = NULL; | |
9af17804 | 3367 | |
69636828 AF |
3368 | method = SYMBOL_NATURAL_NAME (msymbol); |
3369 | ||
3370 | /* Is it a method? */ | |
3371 | if ((method[0] != '-') && (method[0] != '+')) | |
3372 | return; | |
3373 | ||
3374 | if (sym_text[0] == '[') | |
3375 | /* Complete on shortened method method. */ | |
3376 | completion_list_add_name (method + 1, sym_text, sym_text_len, text, word); | |
9af17804 | 3377 | |
69636828 AF |
3378 | while ((strlen (method) + 1) >= tmplen) |
3379 | { | |
3380 | if (tmplen == 0) | |
3381 | tmplen = 1024; | |
3382 | else | |
3383 | tmplen *= 2; | |
3384 | tmp = xrealloc (tmp, tmplen); | |
3385 | } | |
3386 | selector = strchr (method, ' '); | |
3387 | if (selector != NULL) | |
3388 | selector++; | |
9af17804 | 3389 | |
69636828 | 3390 | category = strchr (method, '('); |
9af17804 | 3391 | |
69636828 AF |
3392 | if ((category != NULL) && (selector != NULL)) |
3393 | { | |
3394 | memcpy (tmp, method, (category - method)); | |
3395 | tmp[category - method] = ' '; | |
3396 | memcpy (tmp + (category - method) + 1, selector, strlen (selector) + 1); | |
3397 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); | |
3398 | if (sym_text[0] == '[') | |
3399 | completion_list_add_name (tmp + 1, sym_text, sym_text_len, text, word); | |
3400 | } | |
9af17804 | 3401 | |
69636828 AF |
3402 | if (selector != NULL) |
3403 | { | |
3404 | /* Complete on selector only. */ | |
3405 | strcpy (tmp, selector); | |
3406 | tmp2 = strchr (tmp, ']'); | |
3407 | if (tmp2 != NULL) | |
3408 | *tmp2 = '\0'; | |
9af17804 | 3409 | |
69636828 AF |
3410 | completion_list_add_name (tmp, sym_text, sym_text_len, text, word); |
3411 | } | |
3412 | } | |
3413 | ||
3414 | /* Break the non-quoted text based on the characters which are in | |
3415 | symbols. FIXME: This should probably be language-specific. */ | |
3416 | ||
3417 | static char * | |
3418 | language_search_unquoted_string (char *text, char *p) | |
3419 | { | |
3420 | for (; p > text; --p) | |
3421 | { | |
3422 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0') | |
3423 | continue; | |
3424 | else | |
3425 | { | |
3426 | if ((current_language->la_language == language_objc)) | |
3427 | { | |
3428 | if (p[-1] == ':') /* might be part of a method name */ | |
3429 | continue; | |
3430 | else if (p[-1] == '[' && (p[-2] == '-' || p[-2] == '+')) | |
3431 | p -= 2; /* beginning of a method name */ | |
3432 | else if (p[-1] == ' ' || p[-1] == '(' || p[-1] == ')') | |
3433 | { /* might be part of a method name */ | |
3434 | char *t = p; | |
3435 | ||
3436 | /* Seeing a ' ' or a '(' is not conclusive evidence | |
3437 | that we are in the middle of a method name. However, | |
3438 | finding "-[" or "+[" should be pretty un-ambiguous. | |
3439 | Unfortunately we have to find it now to decide. */ | |
3440 | ||
3441 | while (t > text) | |
3442 | if (isalnum (t[-1]) || t[-1] == '_' || | |
3443 | t[-1] == ' ' || t[-1] == ':' || | |
3444 | t[-1] == '(' || t[-1] == ')') | |
3445 | --t; | |
3446 | else | |
3447 | break; | |
3448 | ||
3449 | if (t[-1] == '[' && (t[-2] == '-' || t[-2] == '+')) | |
3450 | p = t - 2; /* method name detected */ | |
3451 | /* else we leave with p unchanged */ | |
3452 | } | |
3453 | } | |
3454 | break; | |
3455 | } | |
3456 | } | |
3457 | return p; | |
3458 | } | |
3459 | ||
edb3359d DJ |
3460 | static void |
3461 | completion_list_add_fields (struct symbol *sym, char *sym_text, | |
3462 | int sym_text_len, char *text, char *word) | |
3463 | { | |
3464 | if (SYMBOL_CLASS (sym) == LOC_TYPEDEF) | |
3465 | { | |
3466 | struct type *t = SYMBOL_TYPE (sym); | |
3467 | enum type_code c = TYPE_CODE (t); | |
3468 | int j; | |
3469 | ||
3470 | if (c == TYPE_CODE_UNION || c == TYPE_CODE_STRUCT) | |
3471 | for (j = TYPE_N_BASECLASSES (t); j < TYPE_NFIELDS (t); j++) | |
3472 | if (TYPE_FIELD_NAME (t, j)) | |
3473 | completion_list_add_name (TYPE_FIELD_NAME (t, j), | |
3474 | sym_text, sym_text_len, text, word); | |
3475 | } | |
3476 | } | |
3477 | ||
ccefe4c4 TT |
3478 | /* Type of the user_data argument passed to add_macro_name or |
3479 | add_partial_symbol_name. The contents are simply whatever is | |
3480 | needed by completion_list_add_name. */ | |
3481 | struct add_name_data | |
9a044a89 TT |
3482 | { |
3483 | char *sym_text; | |
3484 | int sym_text_len; | |
3485 | char *text; | |
3486 | char *word; | |
3487 | }; | |
3488 | ||
3489 | /* A callback used with macro_for_each and macro_for_each_in_scope. | |
3490 | This adds a macro's name to the current completion list. */ | |
3491 | static void | |
3492 | add_macro_name (const char *name, const struct macro_definition *ignore, | |
3493 | void *user_data) | |
3494 | { | |
ccefe4c4 TT |
3495 | struct add_name_data *datum = (struct add_name_data *) user_data; |
3496 | completion_list_add_name ((char *) name, | |
3497 | datum->sym_text, datum->sym_text_len, | |
3498 | datum->text, datum->word); | |
3499 | } | |
3500 | ||
3501 | /* A callback for map_partial_symbol_names. */ | |
3502 | static void | |
3503 | add_partial_symbol_name (const char *name, void *user_data) | |
3504 | { | |
3505 | struct add_name_data *datum = (struct add_name_data *) user_data; | |
9a044a89 TT |
3506 | completion_list_add_name ((char *) name, |
3507 | datum->sym_text, datum->sym_text_len, | |
3508 | datum->text, datum->word); | |
3509 | } | |
3510 | ||
c906108c | 3511 | char ** |
41d27058 | 3512 | default_make_symbol_completion_list (char *text, char *word) |
c906108c | 3513 | { |
41d27058 JB |
3514 | /* Problem: All of the symbols have to be copied because readline |
3515 | frees them. I'm not going to worry about this; hopefully there | |
3516 | won't be that many. */ | |
3517 | ||
de4f826b DC |
3518 | struct symbol *sym; |
3519 | struct symtab *s; | |
de4f826b DC |
3520 | struct minimal_symbol *msymbol; |
3521 | struct objfile *objfile; | |
edb3359d DJ |
3522 | struct block *b; |
3523 | const struct block *surrounding_static_block, *surrounding_global_block; | |
de4f826b | 3524 | struct dict_iterator iter; |
c906108c SS |
3525 | /* The symbol we are completing on. Points in same buffer as text. */ |
3526 | char *sym_text; | |
3527 | /* Length of sym_text. */ | |
3528 | int sym_text_len; | |
ccefe4c4 | 3529 | struct add_name_data datum; |
c906108c | 3530 | |
41d27058 | 3531 | /* Now look for the symbol we are supposed to complete on. */ |
c906108c SS |
3532 | { |
3533 | char *p; | |
3534 | char quote_found; | |
3535 | char *quote_pos = NULL; | |
3536 | ||
3537 | /* First see if this is a quoted string. */ | |
3538 | quote_found = '\0'; | |
3539 | for (p = text; *p != '\0'; ++p) | |
3540 | { | |
3541 | if (quote_found != '\0') | |
3542 | { | |
3543 | if (*p == quote_found) | |
3544 | /* Found close quote. */ | |
3545 | quote_found = '\0'; | |
3546 | else if (*p == '\\' && p[1] == quote_found) | |
3547 | /* A backslash followed by the quote character | |
c5aa993b | 3548 | doesn't end the string. */ |
c906108c SS |
3549 | ++p; |
3550 | } | |
3551 | else if (*p == '\'' || *p == '"') | |
3552 | { | |
3553 | quote_found = *p; | |
3554 | quote_pos = p; | |
3555 | } | |
3556 | } | |
3557 | if (quote_found == '\'') | |
3558 | /* A string within single quotes can be a symbol, so complete on it. */ | |
3559 | sym_text = quote_pos + 1; | |
3560 | else if (quote_found == '"') | |
3561 | /* A double-quoted string is never a symbol, nor does it make sense | |
c5aa993b | 3562 | to complete it any other way. */ |
c94fdfd0 EZ |
3563 | { |
3564 | return_val = (char **) xmalloc (sizeof (char *)); | |
3565 | return_val[0] = NULL; | |
3566 | return return_val; | |
3567 | } | |
c906108c SS |
3568 | else |
3569 | { | |
3570 | /* It is not a quoted string. Break it based on the characters | |
3571 | which are in symbols. */ | |
3572 | while (p > text) | |
3573 | { | |
95699ff0 KS |
3574 | if (isalnum (p[-1]) || p[-1] == '_' || p[-1] == '\0' |
3575 | || p[-1] == ':') | |
c906108c SS |
3576 | --p; |
3577 | else | |
3578 | break; | |
3579 | } | |
3580 | sym_text = p; | |
3581 | } | |
3582 | } | |
3583 | ||
3584 | sym_text_len = strlen (sym_text); | |
3585 | ||
3586 | return_val_size = 100; | |
3587 | return_val_index = 0; | |
3588 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
3589 | return_val[0] = NULL; | |
3590 | ||
ccefe4c4 TT |
3591 | datum.sym_text = sym_text; |
3592 | datum.sym_text_len = sym_text_len; | |
3593 | datum.text = text; | |
3594 | datum.word = word; | |
3595 | ||
c906108c SS |
3596 | /* Look through the partial symtabs for all symbols which begin |
3597 | by matching SYM_TEXT. Add each one that you find to the list. */ | |
ccefe4c4 | 3598 | map_partial_symbol_names (add_partial_symbol_name, &datum); |
c906108c SS |
3599 | |
3600 | /* At this point scan through the misc symbol vectors and add each | |
3601 | symbol you find to the list. Eventually we want to ignore | |
3602 | anything that isn't a text symbol (everything else will be | |
3603 | handled by the psymtab code above). */ | |
3604 | ||
3605 | ALL_MSYMBOLS (objfile, msymbol) | |
c5aa993b JM |
3606 | { |
3607 | QUIT; | |
3608 | COMPLETION_LIST_ADD_SYMBOL (msymbol, sym_text, sym_text_len, text, word); | |
9af17804 | 3609 | |
69636828 | 3610 | completion_list_objc_symbol (msymbol, sym_text, sym_text_len, text, word); |
c5aa993b | 3611 | } |
c906108c SS |
3612 | |
3613 | /* Search upwards from currently selected frame (so that we can | |
edb3359d DJ |
3614 | complete on local vars). Also catch fields of types defined in |
3615 | this places which match our text string. Only complete on types | |
3616 | visible from current context. */ | |
3617 | ||
3618 | b = get_selected_block (0); | |
3619 | surrounding_static_block = block_static_block (b); | |
3620 | surrounding_global_block = block_global_block (b); | |
3621 | if (surrounding_static_block != NULL) | |
3622 | while (b != surrounding_static_block) | |
3623 | { | |
3624 | QUIT; | |
c906108c | 3625 | |
edb3359d DJ |
3626 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
3627 | { | |
3628 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, | |
3629 | word); | |
3630 | completion_list_add_fields (sym, sym_text, sym_text_len, text, | |
3631 | word); | |
3632 | } | |
c5aa993b | 3633 | |
edb3359d DJ |
3634 | /* Stop when we encounter an enclosing function. Do not stop for |
3635 | non-inlined functions - the locals of the enclosing function | |
3636 | are in scope for a nested function. */ | |
3637 | if (BLOCK_FUNCTION (b) != NULL && block_inlined_p (b)) | |
3638 | break; | |
3639 | b = BLOCK_SUPERBLOCK (b); | |
3640 | } | |
c906108c | 3641 | |
edb3359d | 3642 | /* Add fields from the file's types; symbols will be added below. */ |
c906108c | 3643 | |
edb3359d DJ |
3644 | if (surrounding_static_block != NULL) |
3645 | ALL_BLOCK_SYMBOLS (surrounding_static_block, iter, sym) | |
3646 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
3647 | ||
3648 | if (surrounding_global_block != NULL) | |
3649 | ALL_BLOCK_SYMBOLS (surrounding_global_block, iter, sym) | |
3650 | completion_list_add_fields (sym, sym_text, sym_text_len, text, word); | |
c906108c SS |
3651 | |
3652 | /* Go through the symtabs and check the externs and statics for | |
3653 | symbols which match. */ | |
3654 | ||
11309657 | 3655 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3656 | { |
3657 | QUIT; | |
3658 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 3659 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3660 | { |
c5aa993b JM |
3661 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3662 | } | |
3663 | } | |
c906108c | 3664 | |
11309657 | 3665 | ALL_PRIMARY_SYMTABS (objfile, s) |
c5aa993b JM |
3666 | { |
3667 | QUIT; | |
3668 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 3669 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 3670 | { |
c5aa993b JM |
3671 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3672 | } | |
3673 | } | |
c906108c | 3674 | |
9a044a89 TT |
3675 | if (current_language->la_macro_expansion == macro_expansion_c) |
3676 | { | |
3677 | struct macro_scope *scope; | |
9a044a89 TT |
3678 | |
3679 | /* Add any macros visible in the default scope. Note that this | |
3680 | may yield the occasional wrong result, because an expression | |
3681 | might be evaluated in a scope other than the default. For | |
3682 | example, if the user types "break file:line if <TAB>", the | |
3683 | resulting expression will be evaluated at "file:line" -- but | |
3684 | at there does not seem to be a way to detect this at | |
3685 | completion time. */ | |
3686 | scope = default_macro_scope (); | |
3687 | if (scope) | |
3688 | { | |
3689 | macro_for_each_in_scope (scope->file, scope->line, | |
3690 | add_macro_name, &datum); | |
3691 | xfree (scope); | |
3692 | } | |
3693 | ||
3694 | /* User-defined macros are always visible. */ | |
3695 | macro_for_each (macro_user_macros, add_macro_name, &datum); | |
3696 | } | |
3697 | ||
c906108c SS |
3698 | return (return_val); |
3699 | } | |
3700 | ||
41d27058 JB |
3701 | /* Return a NULL terminated array of all symbols (regardless of class) |
3702 | which begin by matching TEXT. If the answer is no symbols, then | |
3703 | the return value is an array which contains only a NULL pointer. */ | |
3704 | ||
3705 | char ** | |
3706 | make_symbol_completion_list (char *text, char *word) | |
3707 | { | |
3708 | return current_language->la_make_symbol_completion_list (text, word); | |
3709 | } | |
3710 | ||
d8906c6f TJB |
3711 | /* Like make_symbol_completion_list, but suitable for use as a |
3712 | completion function. */ | |
3713 | ||
3714 | char ** | |
3715 | make_symbol_completion_list_fn (struct cmd_list_element *ignore, | |
3716 | char *text, char *word) | |
3717 | { | |
3718 | return make_symbol_completion_list (text, word); | |
3719 | } | |
3720 | ||
c94fdfd0 EZ |
3721 | /* Like make_symbol_completion_list, but returns a list of symbols |
3722 | defined in a source file FILE. */ | |
3723 | ||
3724 | char ** | |
3725 | make_file_symbol_completion_list (char *text, char *word, char *srcfile) | |
3726 | { | |
52f0bd74 AC |
3727 | struct symbol *sym; |
3728 | struct symtab *s; | |
3729 | struct block *b; | |
de4f826b | 3730 | struct dict_iterator iter; |
c94fdfd0 EZ |
3731 | /* The symbol we are completing on. Points in same buffer as text. */ |
3732 | char *sym_text; | |
3733 | /* Length of sym_text. */ | |
3734 | int sym_text_len; | |
3735 | ||
3736 | /* Now look for the symbol we are supposed to complete on. | |
3737 | FIXME: This should be language-specific. */ | |
3738 | { | |
3739 | char *p; | |
3740 | char quote_found; | |
3741 | char *quote_pos = NULL; | |
3742 | ||
3743 | /* First see if this is a quoted string. */ | |
3744 | quote_found = '\0'; | |
3745 | for (p = text; *p != '\0'; ++p) | |
3746 | { | |
3747 | if (quote_found != '\0') | |
3748 | { | |
3749 | if (*p == quote_found) | |
3750 | /* Found close quote. */ | |
3751 | quote_found = '\0'; | |
3752 | else if (*p == '\\' && p[1] == quote_found) | |
3753 | /* A backslash followed by the quote character | |
3754 | doesn't end the string. */ | |
3755 | ++p; | |
3756 | } | |
3757 | else if (*p == '\'' || *p == '"') | |
3758 | { | |
3759 | quote_found = *p; | |
3760 | quote_pos = p; | |
3761 | } | |
3762 | } | |
3763 | if (quote_found == '\'') | |
3764 | /* A string within single quotes can be a symbol, so complete on it. */ | |
3765 | sym_text = quote_pos + 1; | |
3766 | else if (quote_found == '"') | |
3767 | /* A double-quoted string is never a symbol, nor does it make sense | |
3768 | to complete it any other way. */ | |
3769 | { | |
3770 | return_val = (char **) xmalloc (sizeof (char *)); | |
3771 | return_val[0] = NULL; | |
3772 | return return_val; | |
3773 | } | |
3774 | else | |
3775 | { | |
69636828 AF |
3776 | /* Not a quoted string. */ |
3777 | sym_text = language_search_unquoted_string (text, p); | |
c94fdfd0 EZ |
3778 | } |
3779 | } | |
3780 | ||
3781 | sym_text_len = strlen (sym_text); | |
3782 | ||
3783 | return_val_size = 10; | |
3784 | return_val_index = 0; | |
3785 | return_val = (char **) xmalloc ((return_val_size + 1) * sizeof (char *)); | |
3786 | return_val[0] = NULL; | |
3787 | ||
3788 | /* Find the symtab for SRCFILE (this loads it if it was not yet read | |
3789 | in). */ | |
3790 | s = lookup_symtab (srcfile); | |
3791 | if (s == NULL) | |
3792 | { | |
3793 | /* Maybe they typed the file with leading directories, while the | |
3794 | symbol tables record only its basename. */ | |
31889e00 | 3795 | const char *tail = lbasename (srcfile); |
c94fdfd0 EZ |
3796 | |
3797 | if (tail > srcfile) | |
3798 | s = lookup_symtab (tail); | |
3799 | } | |
3800 | ||
3801 | /* If we have no symtab for that file, return an empty list. */ | |
3802 | if (s == NULL) | |
3803 | return (return_val); | |
3804 | ||
3805 | /* Go through this symtab and check the externs and statics for | |
3806 | symbols which match. */ | |
3807 | ||
3808 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK); | |
de4f826b | 3809 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 3810 | { |
c94fdfd0 EZ |
3811 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3812 | } | |
3813 | ||
3814 | b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); | |
de4f826b | 3815 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c94fdfd0 | 3816 | { |
c94fdfd0 EZ |
3817 | COMPLETION_LIST_ADD_SYMBOL (sym, sym_text, sym_text_len, text, word); |
3818 | } | |
3819 | ||
3820 | return (return_val); | |
3821 | } | |
3822 | ||
3823 | /* A helper function for make_source_files_completion_list. It adds | |
3824 | another file name to a list of possible completions, growing the | |
3825 | list as necessary. */ | |
3826 | ||
3827 | static void | |
3828 | add_filename_to_list (const char *fname, char *text, char *word, | |
3829 | char ***list, int *list_used, int *list_alloced) | |
3830 | { | |
3831 | char *new; | |
3832 | size_t fnlen = strlen (fname); | |
3833 | ||
3834 | if (*list_used + 1 >= *list_alloced) | |
3835 | { | |
3836 | *list_alloced *= 2; | |
3837 | *list = (char **) xrealloc ((char *) *list, | |
3838 | *list_alloced * sizeof (char *)); | |
3839 | } | |
3840 | ||
3841 | if (word == text) | |
3842 | { | |
3843 | /* Return exactly fname. */ | |
3844 | new = xmalloc (fnlen + 5); | |
3845 | strcpy (new, fname); | |
3846 | } | |
3847 | else if (word > text) | |
3848 | { | |
3849 | /* Return some portion of fname. */ | |
3850 | new = xmalloc (fnlen + 5); | |
3851 | strcpy (new, fname + (word - text)); | |
3852 | } | |
3853 | else | |
3854 | { | |
3855 | /* Return some of TEXT plus fname. */ | |
3856 | new = xmalloc (fnlen + (text - word) + 5); | |
3857 | strncpy (new, word, text - word); | |
3858 | new[text - word] = '\0'; | |
3859 | strcat (new, fname); | |
3860 | } | |
3861 | (*list)[*list_used] = new; | |
3862 | (*list)[++*list_used] = NULL; | |
3863 | } | |
3864 | ||
3865 | static int | |
3866 | not_interesting_fname (const char *fname) | |
3867 | { | |
3868 | static const char *illegal_aliens[] = { | |
3869 | "_globals_", /* inserted by coff_symtab_read */ | |
3870 | NULL | |
3871 | }; | |
3872 | int i; | |
3873 | ||
3874 | for (i = 0; illegal_aliens[i]; i++) | |
3875 | { | |
3876 | if (strcmp (fname, illegal_aliens[i]) == 0) | |
3877 | return 1; | |
3878 | } | |
3879 | return 0; | |
3880 | } | |
3881 | ||
ccefe4c4 TT |
3882 | /* An object of this type is passed as the user_data argument to |
3883 | map_partial_symbol_filenames. */ | |
3884 | struct add_partial_filename_data | |
3885 | { | |
3886 | int *first; | |
3887 | char *text; | |
3888 | char *word; | |
3889 | int text_len; | |
3890 | char ***list; | |
3891 | int *list_used; | |
3892 | int *list_alloced; | |
3893 | }; | |
3894 | ||
3895 | /* A callback for map_partial_symbol_filenames. */ | |
3896 | static void | |
3897 | maybe_add_partial_symtab_filename (const char *fullname, const char *filename, | |
3898 | void *user_data) | |
3899 | { | |
3900 | struct add_partial_filename_data *data = user_data; | |
3901 | ||
3902 | if (not_interesting_fname (filename)) | |
3903 | return; | |
3904 | if (!filename_seen (filename, 1, data->first) | |
3905 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
3906 | && strncasecmp (filename, data->text, data->text_len) == 0 | |
3907 | #else | |
3908 | && strncmp (filename, data->text, data->text_len) == 0 | |
3909 | #endif | |
3910 | ) | |
3911 | { | |
3912 | /* This file matches for a completion; add it to the | |
3913 | current list of matches. */ | |
3914 | add_filename_to_list (filename, data->text, data->word, | |
3915 | data->list, data->list_used, data->list_alloced); | |
3916 | } | |
3917 | else | |
3918 | { | |
3919 | const char *base_name = lbasename (filename); | |
3920 | if (base_name != filename | |
3921 | && !filename_seen (base_name, 1, data->first) | |
3922 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
3923 | && strncasecmp (base_name, data->text, data->text_len) == 0 | |
3924 | #else | |
3925 | && strncmp (base_name, data->text, data->text_len) == 0 | |
3926 | #endif | |
3927 | ) | |
3928 | add_filename_to_list (base_name, data->text, data->word, | |
3929 | data->list, data->list_used, data->list_alloced); | |
3930 | } | |
3931 | } | |
3932 | ||
c94fdfd0 EZ |
3933 | /* Return a NULL terminated array of all source files whose names |
3934 | begin with matching TEXT. The file names are looked up in the | |
3935 | symbol tables of this program. If the answer is no matchess, then | |
3936 | the return value is an array which contains only a NULL pointer. */ | |
3937 | ||
3938 | char ** | |
3939 | make_source_files_completion_list (char *text, char *word) | |
3940 | { | |
52f0bd74 | 3941 | struct symtab *s; |
52f0bd74 | 3942 | struct objfile *objfile; |
c94fdfd0 EZ |
3943 | int first = 1; |
3944 | int list_alloced = 1; | |
3945 | int list_used = 0; | |
3946 | size_t text_len = strlen (text); | |
3947 | char **list = (char **) xmalloc (list_alloced * sizeof (char *)); | |
31889e00 | 3948 | const char *base_name; |
ccefe4c4 | 3949 | struct add_partial_filename_data datum; |
c94fdfd0 EZ |
3950 | |
3951 | list[0] = NULL; | |
3952 | ||
3953 | if (!have_full_symbols () && !have_partial_symbols ()) | |
3954 | return list; | |
3955 | ||
3956 | ALL_SYMTABS (objfile, s) | |
3957 | { | |
3958 | if (not_interesting_fname (s->filename)) | |
3959 | continue; | |
3960 | if (!filename_seen (s->filename, 1, &first) | |
3961 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
3962 | && strncasecmp (s->filename, text, text_len) == 0 | |
3963 | #else | |
3964 | && strncmp (s->filename, text, text_len) == 0 | |
3965 | #endif | |
3966 | ) | |
3967 | { | |
3968 | /* This file matches for a completion; add it to the current | |
3969 | list of matches. */ | |
3970 | add_filename_to_list (s->filename, text, word, | |
3971 | &list, &list_used, &list_alloced); | |
3972 | } | |
3973 | else | |
3974 | { | |
3975 | /* NOTE: We allow the user to type a base name when the | |
3976 | debug info records leading directories, but not the other | |
3977 | way around. This is what subroutines of breakpoint | |
3978 | command do when they parse file names. */ | |
31889e00 | 3979 | base_name = lbasename (s->filename); |
c94fdfd0 EZ |
3980 | if (base_name != s->filename |
3981 | && !filename_seen (base_name, 1, &first) | |
3982 | #if HAVE_DOS_BASED_FILE_SYSTEM | |
3983 | && strncasecmp (base_name, text, text_len) == 0 | |
3984 | #else | |
3985 | && strncmp (base_name, text, text_len) == 0 | |
3986 | #endif | |
3987 | ) | |
3988 | add_filename_to_list (base_name, text, word, | |
3989 | &list, &list_used, &list_alloced); | |
3990 | } | |
3991 | } | |
3992 | ||
ccefe4c4 TT |
3993 | datum.first = &first; |
3994 | datum.text = text; | |
3995 | datum.word = word; | |
3996 | datum.text_len = text_len; | |
3997 | datum.list = &list; | |
3998 | datum.list_used = &list_used; | |
3999 | datum.list_alloced = &list_alloced; | |
4000 | map_partial_symbol_filenames (maybe_add_partial_symtab_filename, &datum); | |
c94fdfd0 EZ |
4001 | |
4002 | return list; | |
4003 | } | |
4004 | ||
c906108c SS |
4005 | /* Determine if PC is in the prologue of a function. The prologue is the area |
4006 | between the first instruction of a function, and the first executable line. | |
4007 | Returns 1 if PC *might* be in prologue, 0 if definately *not* in prologue. | |
4008 | ||
4009 | If non-zero, func_start is where we think the prologue starts, possibly | |
4010 | by previous examination of symbol table information. | |
4011 | */ | |
4012 | ||
4013 | int | |
d80b854b | 4014 | in_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR func_start) |
c906108c SS |
4015 | { |
4016 | struct symtab_and_line sal; | |
4017 | CORE_ADDR func_addr, func_end; | |
4018 | ||
54cf9c03 EZ |
4019 | /* We have several sources of information we can consult to figure |
4020 | this out. | |
4021 | - Compilers usually emit line number info that marks the prologue | |
4022 | as its own "source line". So the ending address of that "line" | |
4023 | is the end of the prologue. If available, this is the most | |
4024 | reliable method. | |
4025 | - The minimal symbols and partial symbols, which can usually tell | |
4026 | us the starting and ending addresses of a function. | |
4027 | - If we know the function's start address, we can call the | |
a433963d | 4028 | architecture-defined gdbarch_skip_prologue function to analyze the |
54cf9c03 EZ |
4029 | instruction stream and guess where the prologue ends. |
4030 | - Our `func_start' argument; if non-zero, this is the caller's | |
4031 | best guess as to the function's entry point. At the time of | |
4032 | this writing, handle_inferior_event doesn't get this right, so | |
4033 | it should be our last resort. */ | |
4034 | ||
4035 | /* Consult the partial symbol table, to find which function | |
4036 | the PC is in. */ | |
4037 | if (! find_pc_partial_function (pc, NULL, &func_addr, &func_end)) | |
4038 | { | |
4039 | CORE_ADDR prologue_end; | |
c906108c | 4040 | |
54cf9c03 EZ |
4041 | /* We don't even have minsym information, so fall back to using |
4042 | func_start, if given. */ | |
4043 | if (! func_start) | |
4044 | return 1; /* We *might* be in a prologue. */ | |
c906108c | 4045 | |
d80b854b | 4046 | prologue_end = gdbarch_skip_prologue (gdbarch, func_start); |
c906108c | 4047 | |
54cf9c03 EZ |
4048 | return func_start <= pc && pc < prologue_end; |
4049 | } | |
c906108c | 4050 | |
54cf9c03 EZ |
4051 | /* If we have line number information for the function, that's |
4052 | usually pretty reliable. */ | |
4053 | sal = find_pc_line (func_addr, 0); | |
c906108c | 4054 | |
54cf9c03 EZ |
4055 | /* Now sal describes the source line at the function's entry point, |
4056 | which (by convention) is the prologue. The end of that "line", | |
4057 | sal.end, is the end of the prologue. | |
4058 | ||
4059 | Note that, for functions whose source code is all on a single | |
4060 | line, the line number information doesn't always end up this way. | |
4061 | So we must verify that our purported end-of-prologue address is | |
4062 | *within* the function, not at its start or end. */ | |
4063 | if (sal.line == 0 | |
4064 | || sal.end <= func_addr | |
4065 | || func_end <= sal.end) | |
4066 | { | |
4067 | /* We don't have any good line number info, so use the minsym | |
4068 | information, together with the architecture-specific prologue | |
4069 | scanning code. */ | |
d80b854b | 4070 | CORE_ADDR prologue_end = gdbarch_skip_prologue (gdbarch, func_addr); |
c906108c | 4071 | |
54cf9c03 EZ |
4072 | return func_addr <= pc && pc < prologue_end; |
4073 | } | |
c906108c | 4074 | |
54cf9c03 EZ |
4075 | /* We have line number info, and it looks good. */ |
4076 | return func_addr <= pc && pc < sal.end; | |
c906108c SS |
4077 | } |
4078 | ||
634aa483 AC |
4079 | /* Given PC at the function's start address, attempt to find the |
4080 | prologue end using SAL information. Return zero if the skip fails. | |
4081 | ||
4082 | A non-optimized prologue traditionally has one SAL for the function | |
4083 | and a second for the function body. A single line function has | |
4084 | them both pointing at the same line. | |
4085 | ||
4086 | An optimized prologue is similar but the prologue may contain | |
4087 | instructions (SALs) from the instruction body. Need to skip those | |
4088 | while not getting into the function body. | |
4089 | ||
4090 | The functions end point and an increasing SAL line are used as | |
4091 | indicators of the prologue's endpoint. | |
4092 | ||
4093 | This code is based on the function refine_prologue_limit (versions | |
4094 | found in both ia64 and ppc). */ | |
4095 | ||
4096 | CORE_ADDR | |
d80b854b | 4097 | skip_prologue_using_sal (struct gdbarch *gdbarch, CORE_ADDR func_addr) |
634aa483 AC |
4098 | { |
4099 | struct symtab_and_line prologue_sal; | |
4100 | CORE_ADDR start_pc; | |
4101 | CORE_ADDR end_pc; | |
d54be744 | 4102 | struct block *bl; |
634aa483 AC |
4103 | |
4104 | /* Get an initial range for the function. */ | |
4105 | find_pc_partial_function (func_addr, NULL, &start_pc, &end_pc); | |
d80b854b | 4106 | start_pc += gdbarch_deprecated_function_start_offset (gdbarch); |
634aa483 AC |
4107 | |
4108 | prologue_sal = find_pc_line (start_pc, 0); | |
4109 | if (prologue_sal.line != 0) | |
4110 | { | |
d54be744 DJ |
4111 | /* For langauges other than assembly, treat two consecutive line |
4112 | entries at the same address as a zero-instruction prologue. | |
4113 | The GNU assembler emits separate line notes for each instruction | |
4114 | in a multi-instruction macro, but compilers generally will not | |
4115 | do this. */ | |
4116 | if (prologue_sal.symtab->language != language_asm) | |
4117 | { | |
4118 | struct linetable *linetable = LINETABLE (prologue_sal.symtab); | |
4119 | int exact; | |
4120 | int idx = 0; | |
4121 | ||
4122 | /* Skip any earlier lines, and any end-of-sequence marker | |
4123 | from a previous function. */ | |
4124 | while (linetable->item[idx].pc != prologue_sal.pc | |
4125 | || linetable->item[idx].line == 0) | |
4126 | idx++; | |
4127 | ||
4128 | if (idx+1 < linetable->nitems | |
4129 | && linetable->item[idx+1].line != 0 | |
4130 | && linetable->item[idx+1].pc == start_pc) | |
4131 | return start_pc; | |
4132 | } | |
4133 | ||
576c2025 FF |
4134 | /* If there is only one sal that covers the entire function, |
4135 | then it is probably a single line function, like | |
4136 | "foo(){}". */ | |
91934273 | 4137 | if (prologue_sal.end >= end_pc) |
4e463ff5 | 4138 | return 0; |
d54be744 | 4139 | |
634aa483 AC |
4140 | while (prologue_sal.end < end_pc) |
4141 | { | |
4142 | struct symtab_and_line sal; | |
4143 | ||
4144 | sal = find_pc_line (prologue_sal.end, 0); | |
4145 | if (sal.line == 0) | |
4146 | break; | |
4147 | /* Assume that a consecutive SAL for the same (or larger) | |
4148 | line mark the prologue -> body transition. */ | |
4149 | if (sal.line >= prologue_sal.line) | |
4150 | break; | |
edb3359d DJ |
4151 | |
4152 | /* The line number is smaller. Check that it's from the | |
4153 | same function, not something inlined. If it's inlined, | |
4154 | then there is no point comparing the line numbers. */ | |
4155 | bl = block_for_pc (prologue_sal.end); | |
4156 | while (bl) | |
4157 | { | |
4158 | if (block_inlined_p (bl)) | |
4159 | break; | |
4160 | if (BLOCK_FUNCTION (bl)) | |
4161 | { | |
4162 | bl = NULL; | |
4163 | break; | |
4164 | } | |
4165 | bl = BLOCK_SUPERBLOCK (bl); | |
4166 | } | |
4167 | if (bl != NULL) | |
4168 | break; | |
4169 | ||
634aa483 AC |
4170 | /* The case in which compiler's optimizer/scheduler has |
4171 | moved instructions into the prologue. We look ahead in | |
4172 | the function looking for address ranges whose | |
4173 | corresponding line number is less the first one that we | |
4174 | found for the function. This is more conservative then | |
4175 | refine_prologue_limit which scans a large number of SALs | |
4176 | looking for any in the prologue */ | |
4177 | prologue_sal = sal; | |
4178 | } | |
4179 | } | |
d54be744 DJ |
4180 | |
4181 | if (prologue_sal.end < end_pc) | |
4182 | /* Return the end of this line, or zero if we could not find a | |
4183 | line. */ | |
4184 | return prologue_sal.end; | |
4185 | else | |
4186 | /* Don't return END_PC, which is past the end of the function. */ | |
4187 | return prologue_sal.pc; | |
634aa483 | 4188 | } |
c906108c | 4189 | \f |
50641945 FN |
4190 | struct symtabs_and_lines |
4191 | decode_line_spec (char *string, int funfirstline) | |
4192 | { | |
4193 | struct symtabs_and_lines sals; | |
0378c332 | 4194 | struct symtab_and_line cursal; |
9af17804 | 4195 | |
50641945 | 4196 | if (string == 0) |
8a3fe4f8 | 4197 | error (_("Empty line specification.")); |
9af17804 | 4198 | |
0378c332 | 4199 | /* We use whatever is set as the current source line. We do not try |
9af17804 | 4200 | and get a default or it will recursively call us! */ |
0378c332 | 4201 | cursal = get_current_source_symtab_and_line (); |
9af17804 | 4202 | |
50641945 | 4203 | sals = decode_line_1 (&string, funfirstline, |
0378c332 | 4204 | cursal.symtab, cursal.line, |
bffe1ece | 4205 | (char ***) NULL, NULL); |
0378c332 | 4206 | |
50641945 | 4207 | if (*string) |
8a3fe4f8 | 4208 | error (_("Junk at end of line specification: %s"), string); |
50641945 FN |
4209 | return sals; |
4210 | } | |
c5aa993b | 4211 | |
51cc5b07 AC |
4212 | /* Track MAIN */ |
4213 | static char *name_of_main; | |
4214 | ||
4215 | void | |
4216 | set_main_name (const char *name) | |
4217 | { | |
4218 | if (name_of_main != NULL) | |
4219 | { | |
4220 | xfree (name_of_main); | |
4221 | name_of_main = NULL; | |
4222 | } | |
4223 | if (name != NULL) | |
4224 | { | |
4225 | name_of_main = xstrdup (name); | |
4226 | } | |
4227 | } | |
4228 | ||
ea53e89f JB |
4229 | /* Deduce the name of the main procedure, and set NAME_OF_MAIN |
4230 | accordingly. */ | |
4231 | ||
4232 | static void | |
4233 | find_main_name (void) | |
4234 | { | |
cd6c7346 | 4235 | const char *new_main_name; |
ea53e89f JB |
4236 | |
4237 | /* Try to see if the main procedure is in Ada. */ | |
4238 | /* FIXME: brobecker/2005-03-07: Another way of doing this would | |
4239 | be to add a new method in the language vector, and call this | |
4240 | method for each language until one of them returns a non-empty | |
4241 | name. This would allow us to remove this hard-coded call to | |
4242 | an Ada function. It is not clear that this is a better approach | |
4243 | at this point, because all methods need to be written in a way | |
4244 | such that false positives never be returned. For instance, it is | |
4245 | important that a method does not return a wrong name for the main | |
4246 | procedure if the main procedure is actually written in a different | |
4247 | language. It is easy to guaranty this with Ada, since we use a | |
4248 | special symbol generated only when the main in Ada to find the name | |
4249 | of the main procedure. It is difficult however to see how this can | |
4250 | be guarantied for languages such as C, for instance. This suggests | |
4251 | that order of call for these methods becomes important, which means | |
4252 | a more complicated approach. */ | |
4253 | new_main_name = ada_main_name (); | |
4254 | if (new_main_name != NULL) | |
9af17804 | 4255 | { |
ea53e89f JB |
4256 | set_main_name (new_main_name); |
4257 | return; | |
4258 | } | |
4259 | ||
cd6c7346 PM |
4260 | new_main_name = pascal_main_name (); |
4261 | if (new_main_name != NULL) | |
9af17804 | 4262 | { |
cd6c7346 PM |
4263 | set_main_name (new_main_name); |
4264 | return; | |
4265 | } | |
4266 | ||
ea53e89f JB |
4267 | /* The languages above didn't identify the name of the main procedure. |
4268 | Fallback to "main". */ | |
4269 | set_main_name ("main"); | |
4270 | } | |
4271 | ||
51cc5b07 AC |
4272 | char * |
4273 | main_name (void) | |
4274 | { | |
ea53e89f JB |
4275 | if (name_of_main == NULL) |
4276 | find_main_name (); | |
4277 | ||
4278 | return name_of_main; | |
51cc5b07 AC |
4279 | } |
4280 | ||
ea53e89f JB |
4281 | /* Handle ``executable_changed'' events for the symtab module. */ |
4282 | ||
4283 | static void | |
781b42b0 | 4284 | symtab_observer_executable_changed (void) |
ea53e89f JB |
4285 | { |
4286 | /* NAME_OF_MAIN may no longer be the same, so reset it for now. */ | |
4287 | set_main_name (NULL); | |
4288 | } | |
51cc5b07 | 4289 | |
ed0616c6 VP |
4290 | /* Helper to expand_line_sal below. Appends new sal to SAL, |
4291 | initializing it from SYMTAB, LINENO and PC. */ | |
4292 | static void | |
4293 | append_expanded_sal (struct symtabs_and_lines *sal, | |
6c95b8df | 4294 | struct program_space *pspace, |
ed0616c6 VP |
4295 | struct symtab *symtab, |
4296 | int lineno, CORE_ADDR pc) | |
4297 | { | |
9af17804 DE |
4298 | sal->sals = xrealloc (sal->sals, |
4299 | sizeof (sal->sals[0]) | |
ed0616c6 VP |
4300 | * (sal->nelts + 1)); |
4301 | init_sal (sal->sals + sal->nelts); | |
6c95b8df | 4302 | sal->sals[sal->nelts].pspace = pspace; |
ed0616c6 VP |
4303 | sal->sals[sal->nelts].symtab = symtab; |
4304 | sal->sals[sal->nelts].section = NULL; | |
4305 | sal->sals[sal->nelts].end = 0; | |
9af17804 | 4306 | sal->sals[sal->nelts].line = lineno; |
ed0616c6 | 4307 | sal->sals[sal->nelts].pc = pc; |
9af17804 | 4308 | ++sal->nelts; |
ed0616c6 VP |
4309 | } |
4310 | ||
aad80b26 | 4311 | /* Helper to expand_line_sal below. Search in the symtabs for any |
3ffc00b8 JB |
4312 | linetable entry that exactly matches FULLNAME and LINENO and append |
4313 | them to RET. If FULLNAME is NULL or if a symtab has no full name, | |
4314 | use FILENAME and LINENO instead. If there is at least one match, | |
4315 | return 1; otherwise, return 0, and return the best choice in BEST_ITEM | |
4316 | and BEST_SYMTAB. */ | |
aad80b26 JG |
4317 | |
4318 | static int | |
3ffc00b8 | 4319 | append_exact_match_to_sals (char *filename, char *fullname, int lineno, |
aad80b26 JG |
4320 | struct symtabs_and_lines *ret, |
4321 | struct linetable_entry **best_item, | |
4322 | struct symtab **best_symtab) | |
4323 | { | |
6c95b8df | 4324 | struct program_space *pspace; |
aad80b26 JG |
4325 | struct objfile *objfile; |
4326 | struct symtab *symtab; | |
4327 | int exact = 0; | |
4328 | int j; | |
4329 | *best_item = 0; | |
4330 | *best_symtab = 0; | |
6c95b8df PA |
4331 | |
4332 | ALL_PSPACES (pspace) | |
4333 | ALL_PSPACE_SYMTABS (pspace, objfile, symtab) | |
aad80b26 | 4334 | { |
3ffc00b8 | 4335 | if (FILENAME_CMP (filename, symtab->filename) == 0) |
aad80b26 JG |
4336 | { |
4337 | struct linetable *l; | |
4338 | int len; | |
3ffc00b8 JB |
4339 | if (fullname != NULL |
4340 | && symtab_to_fullname (symtab) != NULL | |
4341 | && FILENAME_CMP (fullname, symtab->fullname) != 0) | |
4342 | continue; | |
aad80b26 JG |
4343 | l = LINETABLE (symtab); |
4344 | if (!l) | |
4345 | continue; | |
4346 | len = l->nitems; | |
4347 | ||
4348 | for (j = 0; j < len; j++) | |
4349 | { | |
4350 | struct linetable_entry *item = &(l->item[j]); | |
4351 | ||
4352 | if (item->line == lineno) | |
4353 | { | |
4354 | exact = 1; | |
6c95b8df PA |
4355 | append_expanded_sal (ret, objfile->pspace, |
4356 | symtab, lineno, item->pc); | |
aad80b26 JG |
4357 | } |
4358 | else if (!exact && item->line > lineno | |
4359 | && (*best_item == NULL | |
4360 | || item->line < (*best_item)->line)) | |
4361 | { | |
4362 | *best_item = item; | |
4363 | *best_symtab = symtab; | |
4364 | } | |
4365 | } | |
4366 | } | |
4367 | } | |
4368 | return exact; | |
4369 | } | |
4370 | ||
6c95b8df PA |
4371 | /* Compute a set of all sals in all program spaces that correspond to |
4372 | same file and line as SAL and return those. If there are several | |
4373 | sals that belong to the same block, only one sal for the block is | |
4374 | included in results. */ | |
9af17804 | 4375 | |
ed0616c6 VP |
4376 | struct symtabs_and_lines |
4377 | expand_line_sal (struct symtab_and_line sal) | |
4378 | { | |
4379 | struct symtabs_and_lines ret, this_line; | |
4380 | int i, j; | |
4381 | struct objfile *objfile; | |
4382 | struct partial_symtab *psymtab; | |
4383 | struct symtab *symtab; | |
4384 | int lineno; | |
4385 | int deleted = 0; | |
4386 | struct block **blocks = NULL; | |
4387 | int *filter; | |
6c95b8df | 4388 | struct cleanup *old_chain; |
ed0616c6 VP |
4389 | |
4390 | ret.nelts = 0; | |
4391 | ret.sals = NULL; | |
4392 | ||
6c95b8df | 4393 | /* Only expand sals that represent file.c:line. */ |
ed0616c6 VP |
4394 | if (sal.symtab == NULL || sal.line == 0 || sal.pc != 0) |
4395 | { | |
4396 | ret.sals = xmalloc (sizeof (struct symtab_and_line)); | |
4397 | ret.sals[0] = sal; | |
4398 | ret.nelts = 1; | |
4399 | return ret; | |
4400 | } | |
4401 | else | |
4402 | { | |
6c95b8df | 4403 | struct program_space *pspace; |
ed0616c6 VP |
4404 | struct linetable_entry *best_item = 0; |
4405 | struct symtab *best_symtab = 0; | |
4406 | int exact = 0; | |
6c95b8df | 4407 | char *match_filename; |
ed0616c6 VP |
4408 | |
4409 | lineno = sal.line; | |
6c95b8df | 4410 | match_filename = sal.symtab->filename; |
ed0616c6 | 4411 | |
9af17804 DE |
4412 | /* We need to find all symtabs for a file which name |
4413 | is described by sal. We cannot just directly | |
ed0616c6 | 4414 | iterate over symtabs, since a symtab might not be |
9af17804 | 4415 | yet created. We also cannot iterate over psymtabs, |
ed0616c6 VP |
4416 | calling PSYMTAB_TO_SYMTAB and working on that symtab, |
4417 | since PSYMTAB_TO_SYMTAB will return NULL for psymtab | |
9af17804 | 4418 | corresponding to an included file. Therefore, we do |
ed0616c6 VP |
4419 | first pass over psymtabs, reading in those with |
4420 | the right name. Then, we iterate over symtabs, knowing | |
4421 | that all symtabs we're interested in are loaded. */ | |
4422 | ||
6c95b8df PA |
4423 | old_chain = save_current_program_space (); |
4424 | ALL_PSPACES (pspace) | |
ccefe4c4 TT |
4425 | { |
4426 | set_current_program_space (pspace); | |
4427 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
ed0616c6 | 4428 | { |
ccefe4c4 TT |
4429 | if (objfile->sf) |
4430 | objfile->sf->qf->expand_symtabs_with_filename (objfile, | |
4431 | sal.symtab->filename); | |
ed0616c6 | 4432 | } |
ccefe4c4 | 4433 | } |
6c95b8df | 4434 | do_cleanups (old_chain); |
ed0616c6 | 4435 | |
aad80b26 JG |
4436 | /* Now search the symtab for exact matches and append them. If |
4437 | none is found, append the best_item and all its exact | |
4438 | matches. */ | |
3ffc00b8 JB |
4439 | symtab_to_fullname (sal.symtab); |
4440 | exact = append_exact_match_to_sals (sal.symtab->filename, | |
4441 | sal.symtab->fullname, lineno, | |
aad80b26 | 4442 | &ret, &best_item, &best_symtab); |
ed0616c6 | 4443 | if (!exact && best_item) |
3ffc00b8 JB |
4444 | append_exact_match_to_sals (best_symtab->filename, |
4445 | best_symtab->fullname, best_item->line, | |
aad80b26 | 4446 | &ret, &best_item, &best_symtab); |
ed0616c6 VP |
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 | |
9af17804 | 4456 | that are in the same block. If yes, the other PCs are filtered out. */ |
ed0616c6 | 4457 | |
6c95b8df | 4458 | old_chain = save_current_program_space (); |
db009c8a JB |
4459 | filter = alloca (ret.nelts * sizeof (int)); |
4460 | blocks = alloca (ret.nelts * sizeof (struct block *)); | |
ed0616c6 VP |
4461 | for (i = 0; i < ret.nelts; ++i) |
4462 | { | |
6c95b8df PA |
4463 | struct blockvector *bl; |
4464 | struct block *b; | |
4465 | ||
4466 | set_current_program_space (ret.sals[i].pspace); | |
4467 | ||
ed0616c6 | 4468 | filter[i] = 1; |
6c95b8df PA |
4469 | blocks[i] = block_for_pc_sect (ret.sals[i].pc, ret.sals[i].section); |
4470 | ||
ed0616c6 | 4471 | } |
6c95b8df | 4472 | do_cleanups (old_chain); |
ed0616c6 VP |
4473 | |
4474 | for (i = 0; i < ret.nelts; ++i) | |
4475 | if (blocks[i] != NULL) | |
4476 | for (j = i+1; j < ret.nelts; ++j) | |
4477 | if (blocks[j] == blocks[i]) | |
4478 | { | |
4479 | filter[j] = 0; | |
4480 | ++deleted; | |
4481 | break; | |
4482 | } | |
9af17804 | 4483 | |
ed0616c6 | 4484 | { |
9af17804 | 4485 | struct symtab_and_line *final = |
ed0616c6 | 4486 | xmalloc (sizeof (struct symtab_and_line) * (ret.nelts-deleted)); |
9af17804 | 4487 | |
ed0616c6 VP |
4488 | for (i = 0, j = 0; i < ret.nelts; ++i) |
4489 | if (filter[i]) | |
4490 | final[j++] = ret.sals[i]; | |
9af17804 | 4491 | |
ed0616c6 VP |
4492 | ret.nelts -= deleted; |
4493 | xfree (ret.sals); | |
4494 | ret.sals = final; | |
4495 | } | |
4496 | ||
4497 | return ret; | |
4498 | } | |
4499 | ||
a6c727b2 DJ |
4500 | /* Return 1 if the supplied producer string matches the ARM RealView |
4501 | compiler (armcc). */ | |
4502 | ||
4503 | int | |
4504 | producer_is_realview (const char *producer) | |
4505 | { | |
4506 | static const char *const arm_idents[] = { | |
4507 | "ARM C Compiler, ADS", | |
4508 | "Thumb C Compiler, ADS", | |
4509 | "ARM C++ Compiler, ADS", | |
4510 | "Thumb C++ Compiler, ADS", | |
4511 | "ARM/Thumb C/C++ Compiler, RVCT", | |
4512 | "ARM C/C++ Compiler, RVCT" | |
4513 | }; | |
4514 | int i; | |
4515 | ||
4516 | if (producer == NULL) | |
4517 | return 0; | |
4518 | ||
4519 | for (i = 0; i < ARRAY_SIZE (arm_idents); i++) | |
4520 | if (strncmp (producer, arm_idents[i], strlen (arm_idents[i])) == 0) | |
4521 | return 1; | |
4522 | ||
4523 | return 0; | |
4524 | } | |
ed0616c6 | 4525 | |
c906108c | 4526 | void |
fba45db2 | 4527 | _initialize_symtab (void) |
c906108c | 4528 | { |
1bedd215 AC |
4529 | add_info ("variables", variables_info, _("\ |
4530 | All global and static variable names, or those matching REGEXP.")); | |
c906108c | 4531 | if (dbx_commands) |
1bedd215 AC |
4532 | add_com ("whereis", class_info, variables_info, _("\ |
4533 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4534 | |
4535 | add_info ("functions", functions_info, | |
1bedd215 | 4536 | _("All function names, or those matching REGEXP.")); |
c906108c SS |
4537 | |
4538 | /* FIXME: This command has at least the following problems: | |
4539 | 1. It prints builtin types (in a very strange and confusing fashion). | |
4540 | 2. It doesn't print right, e.g. with | |
c5aa993b JM |
4541 | typedef struct foo *FOO |
4542 | type_print prints "FOO" when we want to make it (in this situation) | |
4543 | print "struct foo *". | |
c906108c SS |
4544 | I also think "ptype" or "whatis" is more likely to be useful (but if |
4545 | there is much disagreement "info types" can be fixed). */ | |
4546 | add_info ("types", types_info, | |
1bedd215 | 4547 | _("All type names, or those matching REGEXP.")); |
c906108c | 4548 | |
c906108c | 4549 | add_info ("sources", sources_info, |
1bedd215 | 4550 | _("Source files in the program.")); |
c906108c SS |
4551 | |
4552 | add_com ("rbreak", class_breakpoint, rbreak_command, | |
1bedd215 | 4553 | _("Set a breakpoint for all functions matching REGEXP.")); |
c906108c SS |
4554 | |
4555 | if (xdb_commands) | |
4556 | { | |
1bedd215 AC |
4557 | add_com ("lf", class_info, sources_info, |
4558 | _("Source files in the program")); | |
4559 | add_com ("lg", class_info, variables_info, _("\ | |
4560 | All global and static variable names, or those matching REGEXP.")); | |
c906108c SS |
4561 | } |
4562 | ||
717d2f5a JB |
4563 | add_setshow_enum_cmd ("multiple-symbols", no_class, |
4564 | multiple_symbols_modes, &multiple_symbols_mode, | |
4565 | _("\ | |
4566 | Set the debugger behavior when more than one symbol are possible matches\n\ | |
4567 | in an expression."), _("\ | |
4568 | Show how the debugger handles ambiguities in expressions."), _("\ | |
4569 | Valid values are \"ask\", \"all\", \"cancel\", and the default is \"all\"."), | |
4570 | NULL, NULL, &setlist, &showlist); | |
4571 | ||
ea53e89f | 4572 | observer_attach_executable_changed (symtab_observer_executable_changed); |
c906108c | 4573 | } |