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8fb8eb5c DE |
1 | /* Debug logging for the symbol file functions for the GNU debugger, GDB. |
2 | ||
3666a048 | 3 | Copyright (C) 2013-2021 Free Software Foundation, Inc. |
8fb8eb5c DE |
4 | |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
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 | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
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. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | /* Note: Be careful with functions that can throw errors. | |
23 | We want to see a logging message regardless of whether an error was thrown. | |
24 | This typically means printing a message before calling the real function | |
25 | and then if the function returns a result printing a message after it | |
26 | returns. */ | |
27 | ||
28 | #include "defs.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "objfiles.h" | |
76727919 | 31 | #include "observable.h" |
8fb8eb5c DE |
32 | #include "source.h" |
33 | #include "symtab.h" | |
34 | #include "symfile.h" | |
84d865e3 | 35 | #include "block.h" |
536a40f3 | 36 | #include "filenames.h" |
8fb8eb5c DE |
37 | |
38 | /* We need to save a pointer to the real symbol functions. | |
39 | Plus, the debug versions are malloc'd because we have to NULL out the | |
40 | ones that are NULL in the real copy. */ | |
41 | ||
42 | struct debug_sym_fns_data | |
43 | { | |
8c42777c TT |
44 | const struct sym_fns *real_sf = nullptr; |
45 | struct sym_fns debug_sf {}; | |
8fb8eb5c DE |
46 | }; |
47 | ||
48 | /* We need to record a pointer to the real set of functions for each | |
49 | objfile. */ | |
8c42777c TT |
50 | static const struct objfile_key<debug_sym_fns_data> |
51 | symfile_debug_objfile_data_key; | |
8fb8eb5c | 52 | |
491144b5 CB |
53 | /* If true all calls to the symfile functions are logged. */ |
54 | static bool debug_symfile = false; | |
8fb8eb5c DE |
55 | |
56 | /* Return non-zero if symfile debug logging is installed. */ | |
57 | ||
58 | static int | |
59 | symfile_debug_installed (struct objfile *objfile) | |
60 | { | |
61 | return (objfile->sf != NULL | |
8c42777c | 62 | && symfile_debug_objfile_data_key.get (objfile) != NULL); |
8fb8eb5c DE |
63 | } |
64 | ||
8fb8eb5c DE |
65 | /* Utility return the name to print for SYMTAB. */ |
66 | ||
67 | static const char * | |
68 | debug_symtab_name (struct symtab *symtab) | |
69 | { | |
70 | return symtab_to_filename_for_display (symtab); | |
71 | } | |
72 | \f | |
8fb8eb5c | 73 | |
4d080b46 TT |
74 | /* See objfiles.h. */ |
75 | ||
76 | bool | |
77 | objfile::has_partial_symbols () | |
8fb8eb5c | 78 | { |
4d080b46 | 79 | bool retval = false; |
8fb8eb5c | 80 | |
4d080b46 TT |
81 | /* If we have not read psymbols, but we have a function capable of reading |
82 | them, then that is an indication that they are in fact available. Without | |
83 | this function the symbols may have been already read in but they also may | |
84 | not be present in this objfile. */ | |
e1114590 TT |
85 | for (const auto &iter : qf) |
86 | { | |
87 | if ((flags & OBJF_PSYMTABS_READ) == 0 | |
88 | && iter->can_lazily_read_symbols ()) | |
89 | retval = true; | |
90 | else | |
91 | retval = iter->has_symbols (this); | |
92 | if (retval) | |
93 | break; | |
94 | } | |
8fb8eb5c | 95 | |
4d080b46 TT |
96 | if (debug_symfile) |
97 | fprintf_filtered (gdb_stdlog, "qf->has_symbols (%s) = %d\n", | |
98 | objfile_debug_name (this), retval); | |
8fb8eb5c DE |
99 | |
100 | return retval; | |
101 | } | |
102 | ||
4d080b46 TT |
103 | struct symtab * |
104 | objfile::find_last_source_symtab () | |
8fb8eb5c | 105 | { |
4d080b46 | 106 | struct symtab *retval = nullptr; |
8fb8eb5c | 107 | |
4d080b46 TT |
108 | if (debug_symfile) |
109 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (%s)\n", | |
110 | objfile_debug_name (this)); | |
8fb8eb5c | 111 | |
e1114590 TT |
112 | for (const auto &iter : qf) |
113 | { | |
114 | retval = iter->find_last_source_symtab (this); | |
115 | if (retval != nullptr) | |
116 | break; | |
117 | } | |
8fb8eb5c | 118 | |
4d080b46 TT |
119 | if (debug_symfile) |
120 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (...) = %s\n", | |
121 | retval ? debug_symtab_name (retval) : "NULL"); | |
8fb8eb5c DE |
122 | |
123 | return retval; | |
124 | } | |
125 | ||
4d080b46 TT |
126 | void |
127 | objfile::forget_cached_source_info () | |
8fb8eb5c | 128 | { |
4d080b46 TT |
129 | if (debug_symfile) |
130 | fprintf_filtered (gdb_stdlog, "qf->forget_cached_source_info (%s)\n", | |
131 | objfile_debug_name (this)); | |
8fb8eb5c | 132 | |
e1114590 TT |
133 | for (const auto &iter : qf) |
134 | iter->forget_cached_source_info (this); | |
8fb8eb5c DE |
135 | } |
136 | ||
4d080b46 TT |
137 | bool |
138 | objfile::map_symtabs_matching_filename | |
139 | (const char *name, const char *real_path, | |
14bc53a8 | 140 | gdb::function_view<bool (symtab *)> callback) |
8fb8eb5c | 141 | { |
4d080b46 TT |
142 | if (debug_symfile) |
143 | fprintf_filtered (gdb_stdlog, | |
144 | "qf->map_symtabs_matching_filename (%s, \"%s\", " | |
145 | "\"%s\", %s)\n", | |
146 | objfile_debug_name (this), name, | |
147 | real_path ? real_path : NULL, | |
148 | host_address_to_string (&callback)); | |
8fb8eb5c | 149 | |
536a40f3 TT |
150 | bool retval = true; |
151 | const char *name_basename = lbasename (name); | |
152 | ||
153 | auto match_one_filename = [&] (const char *filename, bool basenames) | |
154 | { | |
155 | if (compare_filenames_for_search (filename, name)) | |
156 | return true; | |
157 | if (basenames && FILENAME_CMP (name_basename, filename) == 0) | |
158 | return true; | |
159 | if (real_path != nullptr && IS_ABSOLUTE_PATH (filename) | |
160 | && IS_ABSOLUTE_PATH (real_path)) | |
161 | return filename_cmp (filename, real_path) == 0; | |
162 | return false; | |
163 | }; | |
164 | ||
165 | compunit_symtab *last_made = this->compunit_symtabs; | |
166 | ||
167 | auto on_expansion = [&] (compunit_symtab *symtab) | |
168 | { | |
169 | /* The callback to iterate_over_some_symtabs returns false to keep | |
170 | going and true to continue, so we have to invert the result | |
171 | here, for expand_symtabs_matching. */ | |
172 | bool result = !iterate_over_some_symtabs (name, real_path, | |
173 | this->compunit_symtabs, | |
174 | last_made, | |
175 | callback); | |
176 | last_made = this->compunit_symtabs; | |
177 | return result; | |
178 | }; | |
179 | ||
e1114590 TT |
180 | for (const auto &iter : qf) |
181 | { | |
536a40f3 TT |
182 | if (!iter->expand_symtabs_matching (this, |
183 | match_one_filename, | |
184 | nullptr, | |
185 | nullptr, | |
186 | on_expansion, | |
187 | (SEARCH_GLOBAL_BLOCK | |
188 | | SEARCH_STATIC_BLOCK), | |
189 | UNDEF_DOMAIN, | |
190 | ALL_DOMAIN)) | |
191 | { | |
192 | retval = false; | |
193 | break; | |
194 | } | |
e1114590 | 195 | } |
8fb8eb5c | 196 | |
4d080b46 TT |
197 | if (debug_symfile) |
198 | fprintf_filtered (gdb_stdlog, | |
199 | "qf->map_symtabs_matching_filename (...) = %d\n", | |
200 | retval); | |
8fb8eb5c | 201 | |
536a40f3 TT |
202 | /* We must re-invert the return value here to match the caller's |
203 | expectations. */ | |
204 | return !retval; | |
8fb8eb5c DE |
205 | } |
206 | ||
4d080b46 TT |
207 | struct compunit_symtab * |
208 | objfile::lookup_symbol (block_enum kind, const char *name, domain_enum domain) | |
8fb8eb5c | 209 | { |
4d080b46 | 210 | struct compunit_symtab *retval = nullptr; |
8fb8eb5c | 211 | |
4d080b46 TT |
212 | if (debug_symfile) |
213 | fprintf_filtered (gdb_stdlog, | |
214 | "qf->lookup_symbol (%s, %d, \"%s\", %s)\n", | |
215 | objfile_debug_name (this), kind, name, | |
216 | domain_name (domain)); | |
8fb8eb5c | 217 | |
84d865e3 TT |
218 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
219 | ||
220 | auto search_one_symtab = [&] (compunit_symtab *stab) | |
221 | { | |
222 | struct symbol *sym, *with_opaque = NULL; | |
223 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); | |
224 | const struct block *block = BLOCKVECTOR_BLOCK (bv, kind); | |
225 | ||
226 | sym = block_find_symbol (block, name, domain, | |
227 | block_find_non_opaque_type_preferred, | |
228 | &with_opaque); | |
229 | ||
230 | /* Some caution must be observed with overloaded functions | |
231 | and methods, since the index will not contain any overload | |
232 | information (but NAME might contain it). */ | |
233 | ||
234 | if (sym != NULL | |
235 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
236 | { | |
237 | retval = stab; | |
238 | /* Found it. */ | |
239 | return false; | |
240 | } | |
241 | if (with_opaque != NULL | |
242 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
243 | retval = stab; | |
244 | ||
245 | /* Keep looking through other psymtabs. */ | |
246 | return true; | |
247 | }; | |
248 | ||
e1114590 TT |
249 | for (const auto &iter : qf) |
250 | { | |
84d865e3 TT |
251 | if (!iter->expand_symtabs_matching (this, |
252 | nullptr, | |
253 | &lookup_name, | |
254 | nullptr, | |
255 | search_one_symtab, | |
256 | kind == GLOBAL_BLOCK | |
257 | ? SEARCH_GLOBAL_BLOCK | |
258 | : SEARCH_STATIC_BLOCK, | |
259 | domain, | |
260 | ALL_DOMAIN)) | |
e1114590 TT |
261 | break; |
262 | } | |
8fb8eb5c | 263 | |
4d080b46 TT |
264 | if (debug_symfile) |
265 | fprintf_filtered (gdb_stdlog, "qf->lookup_symbol (...) = %s\n", | |
266 | retval | |
267 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
268 | : "NULL"); | |
8fb8eb5c DE |
269 | |
270 | return retval; | |
271 | } | |
272 | ||
4d080b46 | 273 | void |
4829711b | 274 | objfile::print_stats (bool print_bcache) |
8fb8eb5c | 275 | { |
4d080b46 | 276 | if (debug_symfile) |
4829711b TT |
277 | fprintf_filtered (gdb_stdlog, "qf->print_stats (%s, %d)\n", |
278 | objfile_debug_name (this), print_bcache); | |
8fb8eb5c | 279 | |
e1114590 TT |
280 | for (const auto &iter : qf) |
281 | iter->print_stats (this, print_bcache); | |
8fb8eb5c DE |
282 | } |
283 | ||
4d080b46 TT |
284 | void |
285 | objfile::dump () | |
8fb8eb5c | 286 | { |
4d080b46 TT |
287 | if (debug_symfile) |
288 | fprintf_filtered (gdb_stdlog, "qf->dump (%s)\n", | |
289 | objfile_debug_name (this)); | |
8fb8eb5c | 290 | |
e1114590 TT |
291 | for (const auto &iter : qf) |
292 | iter->dump (this); | |
8fb8eb5c DE |
293 | } |
294 | ||
4d080b46 TT |
295 | void |
296 | objfile::expand_symtabs_for_function (const char *func_name) | |
8fb8eb5c | 297 | { |
4d080b46 TT |
298 | if (debug_symfile) |
299 | fprintf_filtered (gdb_stdlog, | |
300 | "qf->expand_symtabs_for_function (%s, \"%s\")\n", | |
301 | objfile_debug_name (this), func_name); | |
8fb8eb5c | 302 | |
7089bd88 TT |
303 | lookup_name_info base_lookup (func_name, symbol_name_match_type::FULL); |
304 | lookup_name_info lookup_name = base_lookup.make_ignore_params (); | |
305 | ||
e1114590 | 306 | for (const auto &iter : qf) |
7089bd88 TT |
307 | iter->expand_symtabs_matching (this, |
308 | nullptr, | |
309 | &lookup_name, | |
310 | nullptr, | |
311 | nullptr, | |
312 | (SEARCH_GLOBAL_BLOCK | |
313 | | SEARCH_STATIC_BLOCK), | |
314 | VAR_DOMAIN, | |
315 | ALL_DOMAIN); | |
8fb8eb5c DE |
316 | } |
317 | ||
4d080b46 TT |
318 | void |
319 | objfile::expand_all_symtabs () | |
8fb8eb5c | 320 | { |
4d080b46 TT |
321 | if (debug_symfile) |
322 | fprintf_filtered (gdb_stdlog, "qf->expand_all_symtabs (%s)\n", | |
323 | objfile_debug_name (this)); | |
8fb8eb5c | 324 | |
e1114590 TT |
325 | for (const auto &iter : qf) |
326 | iter->expand_all_symtabs (this); | |
8fb8eb5c DE |
327 | } |
328 | ||
4d080b46 TT |
329 | void |
330 | objfile::expand_symtabs_with_fullname (const char *fullname) | |
8fb8eb5c | 331 | { |
4d080b46 TT |
332 | if (debug_symfile) |
333 | fprintf_filtered (gdb_stdlog, | |
334 | "qf->expand_symtabs_with_fullname (%s, \"%s\")\n", | |
335 | objfile_debug_name (this), fullname); | |
8fb8eb5c | 336 | |
e1114590 TT |
337 | for (const auto &iter : qf) |
338 | iter->expand_symtabs_with_fullname (this, fullname); | |
8fb8eb5c DE |
339 | } |
340 | ||
4d080b46 TT |
341 | void |
342 | objfile::map_matching_symbols | |
343 | (const lookup_name_info &name, domain_enum domain, | |
199b4314 TT |
344 | int global, |
345 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 346 | symbol_compare_ftype *ordered_compare) |
8fb8eb5c | 347 | { |
4d080b46 TT |
348 | if (debug_symfile) |
349 | fprintf_filtered (gdb_stdlog, | |
350 | "qf->map_matching_symbols (%s, %s, %d, %s)\n", | |
351 | objfile_debug_name (this), | |
352 | domain_name (domain), global, | |
353 | host_address_to_string (ordered_compare)); | |
8fb8eb5c | 354 | |
e1114590 TT |
355 | for (const auto &iter : qf) |
356 | iter->map_matching_symbols (this, name, domain, global, | |
357 | callback, ordered_compare); | |
8fb8eb5c DE |
358 | } |
359 | ||
df35e626 | 360 | bool |
4d080b46 TT |
361 | objfile::expand_symtabs_matching |
362 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 363 | const lookup_name_info *lookup_name, |
14bc53a8 PA |
364 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
365 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 366 | block_search_flags search_flags, |
3bfa51a7 | 367 | domain_enum domain, |
14bc53a8 | 368 | enum search_domain kind) |
8fb8eb5c | 369 | { |
4d080b46 TT |
370 | if (debug_symfile) |
371 | fprintf_filtered (gdb_stdlog, | |
372 | "qf->expand_symtabs_matching (%s, %s, %s, %s, %s)\n", | |
373 | objfile_debug_name (this), | |
374 | host_address_to_string (&file_matcher), | |
375 | host_address_to_string (&symbol_matcher), | |
376 | host_address_to_string (&expansion_notify), | |
377 | search_domain_name (kind)); | |
378 | ||
e1114590 | 379 | for (const auto &iter : qf) |
df35e626 TT |
380 | if (!iter->expand_symtabs_matching (this, file_matcher, lookup_name, |
381 | symbol_matcher, expansion_notify, | |
3bfa51a7 | 382 | search_flags, domain, kind)) |
df35e626 TT |
383 | return false; |
384 | return true; | |
8fb8eb5c DE |
385 | } |
386 | ||
4d080b46 TT |
387 | struct compunit_symtab * |
388 | objfile::find_pc_sect_compunit_symtab (struct bound_minimal_symbol msymbol, | |
43f3e411 DE |
389 | CORE_ADDR pc, |
390 | struct obj_section *section, | |
391 | int warn_if_readin) | |
8fb8eb5c | 392 | { |
4d080b46 TT |
393 | struct compunit_symtab *retval = nullptr; |
394 | ||
395 | if (debug_symfile) | |
396 | fprintf_filtered (gdb_stdlog, | |
397 | "qf->find_pc_sect_compunit_symtab (%s, %s, %s, %s, %d)\n", | |
398 | objfile_debug_name (this), | |
399 | host_address_to_string (msymbol.minsym), | |
400 | hex_string (pc), | |
401 | host_address_to_string (section), | |
402 | warn_if_readin); | |
403 | ||
e1114590 TT |
404 | for (const auto &iter : qf) |
405 | { | |
406 | retval = iter->find_pc_sect_compunit_symtab (this, msymbol, pc, section, | |
407 | warn_if_readin); | |
408 | if (retval != nullptr) | |
409 | break; | |
410 | } | |
4d080b46 TT |
411 | |
412 | if (debug_symfile) | |
413 | fprintf_filtered (gdb_stdlog, | |
414 | "qf->find_pc_sect_compunit_symtab (...) = %s\n", | |
415 | retval | |
416 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
417 | : "NULL"); | |
8fb8eb5c DE |
418 | |
419 | return retval; | |
420 | } | |
421 | ||
4d080b46 | 422 | void |
f4655dee TT |
423 | objfile::map_symbol_filenames (gdb::function_view<symbol_filename_ftype> fun, |
424 | bool need_fullname) | |
8fb8eb5c | 425 | { |
4d080b46 TT |
426 | if (debug_symfile) |
427 | fprintf_filtered (gdb_stdlog, | |
f4655dee | 428 | "qf->map_symbol_filenames (%s, ..., %d)\n", |
4d080b46 | 429 | objfile_debug_name (this), |
4d080b46 | 430 | need_fullname); |
8fb8eb5c | 431 | |
e1114590 | 432 | for (const auto &iter : qf) |
f4655dee | 433 | iter->map_symbol_filenames (this, fun, need_fullname); |
8fb8eb5c DE |
434 | } |
435 | ||
4d080b46 TT |
436 | struct compunit_symtab * |
437 | objfile::find_compunit_symtab_by_address (CORE_ADDR address) | |
71a3c369 | 438 | { |
4d080b46 TT |
439 | if (debug_symfile) |
440 | fprintf_filtered (gdb_stdlog, | |
441 | "qf->find_compunit_symtab_by_address (%s, %s)\n", | |
442 | objfile_debug_name (this), | |
443 | hex_string (address)); | |
71a3c369 TT |
444 | |
445 | struct compunit_symtab *result = NULL; | |
e1114590 TT |
446 | for (const auto &iter : qf) |
447 | { | |
448 | result = iter->find_compunit_symtab_by_address (this, address); | |
449 | if (result != nullptr) | |
450 | break; | |
451 | } | |
71a3c369 | 452 | |
4d080b46 TT |
453 | if (debug_symfile) |
454 | fprintf_filtered (gdb_stdlog, | |
455 | "qf->find_compunit_symtab_by_address (...) = %s\n", | |
456 | result | |
457 | ? debug_symtab_name (compunit_primary_filetab (result)) | |
458 | : "NULL"); | |
459 | ||
460 | return result; | |
461 | } | |
462 | ||
463 | enum language | |
464 | objfile::lookup_global_symbol_language (const char *name, | |
465 | domain_enum domain, | |
466 | bool *symbol_found_p) | |
467 | { | |
468 | enum language result = language_unknown; | |
e1114590 | 469 | *symbol_found_p = false; |
4d080b46 | 470 | |
e1114590 TT |
471 | for (const auto &iter : qf) |
472 | { | |
473 | result = iter->lookup_global_symbol_language (this, name, domain, | |
474 | symbol_found_p); | |
475 | if (*symbol_found_p) | |
476 | break; | |
477 | } | |
71a3c369 TT |
478 | |
479 | return result; | |
480 | } | |
481 | ||
d1eef86d TT |
482 | void |
483 | objfile::require_partial_symbols (bool verbose) | |
484 | { | |
485 | if ((flags & OBJF_PSYMTABS_READ) == 0) | |
486 | { | |
487 | flags |= OBJF_PSYMTABS_READ; | |
488 | ||
e1114590 TT |
489 | bool printed = false; |
490 | for (const auto &iter : qf) | |
d1eef86d | 491 | { |
e1114590 TT |
492 | if (iter->can_lazily_read_symbols ()) |
493 | { | |
494 | if (verbose && !printed) | |
495 | { | |
496 | printf_filtered (_("Reading symbols from %s...\n"), | |
497 | objfile_name (this)); | |
498 | printed = true; | |
499 | } | |
500 | iter->read_partial_symbols (this); | |
501 | } | |
d1eef86d | 502 | } |
e1114590 TT |
503 | if (printed && !objfile_has_symbols (this)) |
504 | printf_filtered (_("(No debugging symbols found in %s)\n"), | |
505 | objfile_name (this)); | |
d1eef86d TT |
506 | } |
507 | } | |
508 | ||
8fb8eb5c DE |
509 | \f |
510 | /* Debugging version of struct sym_probe_fns. */ | |
511 | ||
814cf43a | 512 | static const std::vector<std::unique_ptr<probe>> & |
8fb8eb5c DE |
513 | debug_sym_get_probes (struct objfile *objfile) |
514 | { | |
19ba03f4 | 515 | const struct debug_sym_fns_data *debug_data |
8c42777c | 516 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c | 517 | |
814cf43a | 518 | const std::vector<std::unique_ptr<probe>> &retval |
aaa63a31 | 519 | = debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile); |
8fb8eb5c DE |
520 | |
521 | fprintf_filtered (gdb_stdlog, | |
522 | "probes->sym_get_probes (%s) = %s\n", | |
cc485e62 | 523 | objfile_debug_name (objfile), |
aaa63a31 | 524 | host_address_to_string (retval.data ())); |
8fb8eb5c DE |
525 | |
526 | return retval; | |
527 | } | |
528 | ||
8fb8eb5c DE |
529 | static const struct sym_probe_fns debug_sym_probe_fns = |
530 | { | |
531 | debug_sym_get_probes, | |
8fb8eb5c DE |
532 | }; |
533 | \f | |
534 | /* Debugging version of struct sym_fns. */ | |
535 | ||
536 | static void | |
537 | debug_sym_new_init (struct objfile *objfile) | |
538 | { | |
19ba03f4 | 539 | const struct debug_sym_fns_data *debug_data |
8c42777c | 540 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
541 | |
542 | fprintf_filtered (gdb_stdlog, "sf->sym_new_init (%s)\n", | |
cc485e62 | 543 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
544 | |
545 | debug_data->real_sf->sym_new_init (objfile); | |
546 | } | |
547 | ||
548 | static void | |
549 | debug_sym_init (struct objfile *objfile) | |
550 | { | |
19ba03f4 | 551 | const struct debug_sym_fns_data *debug_data |
8c42777c | 552 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
553 | |
554 | fprintf_filtered (gdb_stdlog, "sf->sym_init (%s)\n", | |
cc485e62 | 555 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
556 | |
557 | debug_data->real_sf->sym_init (objfile); | |
558 | } | |
559 | ||
560 | static void | |
b15cc25c | 561 | debug_sym_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
8fb8eb5c | 562 | { |
19ba03f4 | 563 | const struct debug_sym_fns_data *debug_data |
8c42777c | 564 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
565 | |
566 | fprintf_filtered (gdb_stdlog, "sf->sym_read (%s, 0x%x)\n", | |
b15cc25c | 567 | objfile_debug_name (objfile), (unsigned) symfile_flags); |
8fb8eb5c DE |
568 | |
569 | debug_data->real_sf->sym_read (objfile, symfile_flags); | |
570 | } | |
571 | ||
8fb8eb5c DE |
572 | static void |
573 | debug_sym_finish (struct objfile *objfile) | |
574 | { | |
19ba03f4 | 575 | const struct debug_sym_fns_data *debug_data |
8c42777c | 576 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
577 | |
578 | fprintf_filtered (gdb_stdlog, "sf->sym_finish (%s)\n", | |
cc485e62 | 579 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
580 | |
581 | debug_data->real_sf->sym_finish (objfile); | |
582 | } | |
583 | ||
584 | static void | |
585 | debug_sym_offsets (struct objfile *objfile, | |
37e136b1 | 586 | const section_addr_info &info) |
8fb8eb5c | 587 | { |
19ba03f4 | 588 | const struct debug_sym_fns_data *debug_data |
8c42777c | 589 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
590 | |
591 | fprintf_filtered (gdb_stdlog, "sf->sym_offsets (%s, %s)\n", | |
cc485e62 | 592 | objfile_debug_name (objfile), |
37e136b1 | 593 | host_address_to_string (&info)); |
8fb8eb5c DE |
594 | |
595 | debug_data->real_sf->sym_offsets (objfile, info); | |
596 | } | |
597 | ||
62982abd | 598 | static symfile_segment_data_up |
8fb8eb5c DE |
599 | debug_sym_segments (bfd *abfd) |
600 | { | |
601 | /* This API function is annoying, it doesn't take a "this" pointer. | |
602 | Fortunately it is only used in one place where we (re-)lookup the | |
603 | sym_fns table to use. Thus we will never be called. */ | |
604 | gdb_assert_not_reached ("debug_sym_segments called"); | |
605 | } | |
606 | ||
607 | static void | |
608 | debug_sym_read_linetable (struct objfile *objfile) | |
609 | { | |
19ba03f4 | 610 | const struct debug_sym_fns_data *debug_data |
8c42777c | 611 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
612 | |
613 | fprintf_filtered (gdb_stdlog, "sf->sym_read_linetable (%s)\n", | |
cc485e62 | 614 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
615 | |
616 | debug_data->real_sf->sym_read_linetable (objfile); | |
617 | } | |
618 | ||
619 | static bfd_byte * | |
620 | debug_sym_relocate (struct objfile *objfile, asection *sectp, bfd_byte *buf) | |
621 | { | |
19ba03f4 | 622 | const struct debug_sym_fns_data *debug_data |
8c42777c | 623 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
624 | bfd_byte *retval; |
625 | ||
626 | retval = debug_data->real_sf->sym_relocate (objfile, sectp, buf); | |
627 | ||
628 | fprintf_filtered (gdb_stdlog, | |
629 | "sf->sym_relocate (%s, %s, %s) = %s\n", | |
cc485e62 | 630 | objfile_debug_name (objfile), |
8fb8eb5c DE |
631 | host_address_to_string (sectp), |
632 | host_address_to_string (buf), | |
633 | host_address_to_string (retval)); | |
634 | ||
635 | return retval; | |
636 | } | |
637 | ||
638 | /* Template of debugging version of struct sym_fns. | |
639 | A copy is made, with sym_flavour updated, and a pointer to the real table | |
640 | installed in real_sf, and then a pointer to the copy is installed in the | |
641 | objfile. */ | |
642 | ||
643 | static const struct sym_fns debug_sym_fns = | |
644 | { | |
645 | debug_sym_new_init, | |
646 | debug_sym_init, | |
647 | debug_sym_read, | |
8fb8eb5c DE |
648 | debug_sym_finish, |
649 | debug_sym_offsets, | |
650 | debug_sym_segments, | |
651 | debug_sym_read_linetable, | |
652 | debug_sym_relocate, | |
653 | &debug_sym_probe_fns, | |
8fb8eb5c DE |
654 | }; |
655 | \f | |
8fb8eb5c DE |
656 | /* Install the debugging versions of the symfile functions for OBJFILE. |
657 | Do not call this if the debug versions are already installed. */ | |
658 | ||
659 | static void | |
660 | install_symfile_debug_logging (struct objfile *objfile) | |
661 | { | |
662 | const struct sym_fns *real_sf; | |
663 | struct debug_sym_fns_data *debug_data; | |
664 | ||
665 | /* The debug versions should not already be installed. */ | |
666 | gdb_assert (!symfile_debug_installed (objfile)); | |
667 | ||
668 | real_sf = objfile->sf; | |
669 | ||
670 | /* Alas we have to preserve NULL entries in REAL_SF. */ | |
8c42777c | 671 | debug_data = new struct debug_sym_fns_data; |
8fb8eb5c DE |
672 | |
673 | #define COPY_SF_PTR(from, to, name, func) \ | |
674 | do { \ | |
675 | if ((from)->name) \ | |
676 | (to)->debug_sf.name = func; \ | |
677 | } while (0) | |
678 | ||
679 | COPY_SF_PTR (real_sf, debug_data, sym_new_init, debug_sym_new_init); | |
680 | COPY_SF_PTR (real_sf, debug_data, sym_init, debug_sym_init); | |
681 | COPY_SF_PTR (real_sf, debug_data, sym_read, debug_sym_read); | |
8fb8eb5c DE |
682 | COPY_SF_PTR (real_sf, debug_data, sym_finish, debug_sym_finish); |
683 | COPY_SF_PTR (real_sf, debug_data, sym_offsets, debug_sym_offsets); | |
684 | COPY_SF_PTR (real_sf, debug_data, sym_segments, debug_sym_segments); | |
685 | COPY_SF_PTR (real_sf, debug_data, sym_read_linetable, | |
686 | debug_sym_read_linetable); | |
687 | COPY_SF_PTR (real_sf, debug_data, sym_relocate, debug_sym_relocate); | |
688 | if (real_sf->sym_probe_fns) | |
689 | debug_data->debug_sf.sym_probe_fns = &debug_sym_probe_fns; | |
8fb8eb5c DE |
690 | |
691 | #undef COPY_SF_PTR | |
692 | ||
693 | debug_data->real_sf = real_sf; | |
8c42777c | 694 | symfile_debug_objfile_data_key.set (objfile, debug_data); |
8fb8eb5c DE |
695 | objfile->sf = &debug_data->debug_sf; |
696 | } | |
697 | ||
698 | /* Uninstall the debugging versions of the symfile functions for OBJFILE. | |
699 | Do not call this if the debug versions are not installed. */ | |
700 | ||
701 | static void | |
702 | uninstall_symfile_debug_logging (struct objfile *objfile) | |
703 | { | |
704 | struct debug_sym_fns_data *debug_data; | |
705 | ||
706 | /* The debug versions should be currently installed. */ | |
707 | gdb_assert (symfile_debug_installed (objfile)); | |
708 | ||
8c42777c | 709 | debug_data = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
710 | |
711 | objfile->sf = debug_data->real_sf; | |
8c42777c | 712 | symfile_debug_objfile_data_key.clear (objfile); |
8fb8eb5c DE |
713 | } |
714 | ||
715 | /* Call this function to set OBJFILE->SF. | |
716 | Do not set OBJFILE->SF directly. */ | |
717 | ||
718 | void | |
719 | objfile_set_sym_fns (struct objfile *objfile, const struct sym_fns *sf) | |
720 | { | |
721 | if (symfile_debug_installed (objfile)) | |
722 | { | |
723 | gdb_assert (debug_symfile); | |
724 | /* Remove the current one, and reinstall a new one later. */ | |
725 | uninstall_symfile_debug_logging (objfile); | |
726 | } | |
727 | ||
728 | /* Assume debug logging is disabled. */ | |
729 | objfile->sf = sf; | |
730 | ||
731 | /* Turn debug logging on if enabled. */ | |
732 | if (debug_symfile) | |
733 | install_symfile_debug_logging (objfile); | |
734 | } | |
735 | ||
736 | static void | |
eb4c3f4a | 737 | set_debug_symfile (const char *args, int from_tty, struct cmd_list_element *c) |
8fb8eb5c | 738 | { |
94c93c35 | 739 | for (struct program_space *pspace : program_spaces) |
2030c079 | 740 | for (objfile *objfile : pspace->objfiles ()) |
99d89cde TT |
741 | { |
742 | if (debug_symfile) | |
743 | { | |
744 | if (!symfile_debug_installed (objfile)) | |
745 | install_symfile_debug_logging (objfile); | |
746 | } | |
747 | else | |
748 | { | |
749 | if (symfile_debug_installed (objfile)) | |
750 | uninstall_symfile_debug_logging (objfile); | |
751 | } | |
752 | } | |
8fb8eb5c DE |
753 | } |
754 | ||
755 | static void | |
756 | show_debug_symfile (struct ui_file *file, int from_tty, | |
757 | struct cmd_list_element *c, const char *value) | |
758 | { | |
759 | fprintf_filtered (file, _("Symfile debugging is %s.\n"), value); | |
760 | } | |
761 | ||
6c265988 | 762 | void _initialize_symfile_debug (); |
8fb8eb5c | 763 | void |
6c265988 | 764 | _initialize_symfile_debug () |
8fb8eb5c | 765 | { |
8fb8eb5c DE |
766 | add_setshow_boolean_cmd ("symfile", no_class, &debug_symfile, _("\ |
767 | Set debugging of the symfile functions."), _("\ | |
768 | Show debugging of the symfile functions."), _("\ | |
769 | When enabled, all calls to the symfile functions are logged."), | |
770 | set_debug_symfile, show_debug_symfile, | |
771 | &setdebuglist, &showdebuglist); | |
772 | ||
773 | /* Note: We don't need a new-objfile observer because debug logging | |
774 | will be installed when objfile init'n calls objfile_set_sym_fns. */ | |
775 | } |