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