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8fb8eb5c DE |
1 | /* Debug logging for the symbol file functions for the GNU debugger, GDB. |
2 | ||
42a4f53d | 3 | Copyright (C) 2013-2019 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" | |
35 | ||
36 | /* We need to save a pointer to the real symbol functions. | |
37 | Plus, the debug versions are malloc'd because we have to NULL out the | |
38 | ones that are NULL in the real copy. */ | |
39 | ||
40 | struct debug_sym_fns_data | |
41 | { | |
8c42777c TT |
42 | const struct sym_fns *real_sf = nullptr; |
43 | struct sym_fns debug_sf {}; | |
8fb8eb5c DE |
44 | }; |
45 | ||
46 | /* We need to record a pointer to the real set of functions for each | |
47 | objfile. */ | |
8c42777c TT |
48 | static const struct objfile_key<debug_sym_fns_data> |
49 | symfile_debug_objfile_data_key; | |
8fb8eb5c DE |
50 | |
51 | /* If non-zero all calls to the symfile functions are logged. */ | |
52 | static int debug_symfile = 0; | |
53 | ||
54 | /* Return non-zero if symfile debug logging is installed. */ | |
55 | ||
56 | static int | |
57 | symfile_debug_installed (struct objfile *objfile) | |
58 | { | |
59 | return (objfile->sf != NULL | |
8c42777c | 60 | && symfile_debug_objfile_data_key.get (objfile) != NULL); |
8fb8eb5c DE |
61 | } |
62 | ||
8fb8eb5c DE |
63 | /* Utility return the name to print for SYMTAB. */ |
64 | ||
65 | static const char * | |
66 | debug_symtab_name (struct symtab *symtab) | |
67 | { | |
68 | return symtab_to_filename_for_display (symtab); | |
69 | } | |
70 | \f | |
71 | /* Debugging version of struct quick_symbol_functions. */ | |
72 | ||
73 | static int | |
74 | debug_qf_has_symbols (struct objfile *objfile) | |
75 | { | |
19ba03f4 | 76 | const struct debug_sym_fns_data *debug_data |
8c42777c | 77 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
78 | int retval; |
79 | ||
80 | retval = debug_data->real_sf->qf->has_symbols (objfile); | |
81 | ||
82 | fprintf_filtered (gdb_stdlog, "qf->has_symbols (%s) = %d\n", | |
cc485e62 | 83 | objfile_debug_name (objfile), retval); |
8fb8eb5c DE |
84 | |
85 | return retval; | |
86 | } | |
87 | ||
88 | static struct symtab * | |
89 | debug_qf_find_last_source_symtab (struct objfile *objfile) | |
90 | { | |
19ba03f4 | 91 | const struct debug_sym_fns_data *debug_data |
8c42777c | 92 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
93 | struct symtab *retval; |
94 | ||
95 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (%s)\n", | |
cc485e62 | 96 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
97 | |
98 | retval = debug_data->real_sf->qf->find_last_source_symtab (objfile); | |
99 | ||
100 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (...) = %s\n", | |
101 | retval ? debug_symtab_name (retval) : "NULL"); | |
102 | ||
103 | return retval; | |
104 | } | |
105 | ||
106 | static void | |
107 | debug_qf_forget_cached_source_info (struct objfile *objfile) | |
108 | { | |
19ba03f4 | 109 | const struct debug_sym_fns_data *debug_data |
8c42777c | 110 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
111 | |
112 | fprintf_filtered (gdb_stdlog, "qf->forget_cached_source_info (%s)\n", | |
cc485e62 | 113 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
114 | |
115 | debug_data->real_sf->qf->forget_cached_source_info (objfile); | |
116 | } | |
117 | ||
14bc53a8 PA |
118 | static bool |
119 | debug_qf_map_symtabs_matching_filename | |
120 | (struct objfile *objfile, const char *name, const char *real_path, | |
121 | gdb::function_view<bool (symtab *)> callback) | |
8fb8eb5c | 122 | { |
19ba03f4 | 123 | const struct debug_sym_fns_data *debug_data |
8c42777c | 124 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
125 | |
126 | fprintf_filtered (gdb_stdlog, | |
14bc53a8 | 127 | "qf->map_symtabs_matching_filename (%s, \"%s\", \"%s\", %s)\n", |
cc485e62 | 128 | objfile_debug_name (objfile), name, |
8fb8eb5c | 129 | real_path ? real_path : NULL, |
14bc53a8 | 130 | host_address_to_string (&callback)); |
8fb8eb5c | 131 | |
14bc53a8 PA |
132 | bool retval = (debug_data->real_sf->qf->map_symtabs_matching_filename |
133 | (objfile, name, real_path, callback)); | |
8fb8eb5c DE |
134 | |
135 | fprintf_filtered (gdb_stdlog, | |
136 | "qf->map_symtabs_matching_filename (...) = %d\n", | |
137 | retval); | |
138 | ||
139 | return retval; | |
140 | } | |
141 | ||
43f3e411 | 142 | static struct compunit_symtab * |
c7f839cb SM |
143 | debug_qf_lookup_symbol (struct objfile *objfile, block_enum kind, |
144 | const char *name, domain_enum domain) | |
8fb8eb5c | 145 | { |
19ba03f4 | 146 | const struct debug_sym_fns_data *debug_data |
8c42777c | 147 | = symfile_debug_objfile_data_key.get (objfile); |
43f3e411 | 148 | struct compunit_symtab *retval; |
8fb8eb5c DE |
149 | |
150 | fprintf_filtered (gdb_stdlog, | |
151 | "qf->lookup_symbol (%s, %d, \"%s\", %s)\n", | |
cc485e62 | 152 | objfile_debug_name (objfile), kind, name, |
8fb8eb5c DE |
153 | domain_name (domain)); |
154 | ||
155 | retval = debug_data->real_sf->qf->lookup_symbol (objfile, kind, name, | |
156 | domain); | |
157 | ||
158 | fprintf_filtered (gdb_stdlog, "qf->lookup_symbol (...) = %s\n", | |
43f3e411 DE |
159 | retval |
160 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
161 | : "NULL"); | |
8fb8eb5c DE |
162 | |
163 | return retval; | |
164 | } | |
165 | ||
166 | static void | |
167 | debug_qf_print_stats (struct objfile *objfile) | |
168 | { | |
19ba03f4 | 169 | const struct debug_sym_fns_data *debug_data |
8c42777c | 170 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
171 | |
172 | fprintf_filtered (gdb_stdlog, "qf->print_stats (%s)\n", | |
cc485e62 | 173 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
174 | |
175 | debug_data->real_sf->qf->print_stats (objfile); | |
176 | } | |
177 | ||
178 | static void | |
179 | debug_qf_dump (struct objfile *objfile) | |
180 | { | |
19ba03f4 | 181 | const struct debug_sym_fns_data *debug_data |
8c42777c | 182 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
183 | |
184 | fprintf_filtered (gdb_stdlog, "qf->dump (%s)\n", | |
cc485e62 | 185 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
186 | |
187 | debug_data->real_sf->qf->dump (objfile); | |
188 | } | |
189 | ||
8fb8eb5c DE |
190 | static void |
191 | debug_qf_expand_symtabs_for_function (struct objfile *objfile, | |
192 | const char *func_name) | |
193 | { | |
19ba03f4 | 194 | const struct debug_sym_fns_data *debug_data |
8c42777c | 195 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
196 | |
197 | fprintf_filtered (gdb_stdlog, | |
198 | "qf->expand_symtabs_for_function (%s, \"%s\")\n", | |
cc485e62 | 199 | objfile_debug_name (objfile), func_name); |
8fb8eb5c DE |
200 | |
201 | debug_data->real_sf->qf->expand_symtabs_for_function (objfile, func_name); | |
202 | } | |
203 | ||
204 | static void | |
205 | debug_qf_expand_all_symtabs (struct objfile *objfile) | |
206 | { | |
19ba03f4 | 207 | const struct debug_sym_fns_data *debug_data |
8c42777c | 208 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
209 | |
210 | fprintf_filtered (gdb_stdlog, "qf->expand_all_symtabs (%s)\n", | |
cc485e62 | 211 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
212 | |
213 | debug_data->real_sf->qf->expand_all_symtabs (objfile); | |
214 | } | |
215 | ||
216 | static void | |
217 | debug_qf_expand_symtabs_with_fullname (struct objfile *objfile, | |
218 | const char *fullname) | |
219 | { | |
19ba03f4 | 220 | const struct debug_sym_fns_data *debug_data |
8c42777c | 221 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
222 | |
223 | fprintf_filtered (gdb_stdlog, | |
224 | "qf->expand_symtabs_with_fullname (%s, \"%s\")\n", | |
cc485e62 | 225 | objfile_debug_name (objfile), fullname); |
8fb8eb5c DE |
226 | |
227 | debug_data->real_sf->qf->expand_symtabs_with_fullname (objfile, fullname); | |
228 | } | |
229 | ||
230 | static void | |
199b4314 TT |
231 | debug_qf_map_matching_symbols |
232 | (struct objfile *objfile, | |
233 | const char *name, domain_enum domain, | |
234 | int global, | |
235 | gdb::function_view<symbol_found_callback_ftype> callback, | |
236 | symbol_name_match_type match, | |
237 | symbol_compare_ftype *ordered_compare) | |
8fb8eb5c | 238 | { |
19ba03f4 | 239 | const struct debug_sym_fns_data *debug_data |
8c42777c | 240 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
241 | |
242 | fprintf_filtered (gdb_stdlog, | |
199b4314 | 243 | "qf->map_matching_symbols (%s, \"%s\", %s, %d, %s, %s)\n", |
cc485e62 | 244 | objfile_debug_name (objfile), name, |
fe978cb0 | 245 | domain_name (domain), global, |
b5ec771e | 246 | plongest ((LONGEST) match), |
8fb8eb5c DE |
247 | host_address_to_string (ordered_compare)); |
248 | ||
249 | debug_data->real_sf->qf->map_matching_symbols (objfile, name, | |
fe978cb0 | 250 | domain, global, |
199b4314 | 251 | callback, |
8fb8eb5c DE |
252 | match, |
253 | ordered_compare); | |
254 | } | |
255 | ||
256 | static void | |
e86b67d3 JB |
257 | debug_qf_expand_symtabs_matching |
258 | (struct objfile *objfile, | |
14bc53a8 | 259 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
b5ec771e | 260 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
261 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
262 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
263 | enum search_domain kind) | |
8fb8eb5c | 264 | { |
19ba03f4 | 265 | const struct debug_sym_fns_data *debug_data |
8c42777c | 266 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
267 | |
268 | fprintf_filtered (gdb_stdlog, | |
14bc53a8 | 269 | "qf->expand_symtabs_matching (%s, %s, %s, %s, %s)\n", |
cc485e62 | 270 | objfile_debug_name (objfile), |
14bc53a8 PA |
271 | host_address_to_string (&file_matcher), |
272 | host_address_to_string (&symbol_matcher), | |
273 | host_address_to_string (&expansion_notify), | |
274 | search_domain_name (kind)); | |
8fb8eb5c DE |
275 | |
276 | debug_data->real_sf->qf->expand_symtabs_matching (objfile, | |
277 | file_matcher, | |
b5ec771e | 278 | lookup_name, |
3f03e7b1 | 279 | symbol_matcher, |
276d885b | 280 | expansion_notify, |
14bc53a8 | 281 | kind); |
8fb8eb5c DE |
282 | } |
283 | ||
43f3e411 DE |
284 | static struct compunit_symtab * |
285 | debug_qf_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
286 | struct bound_minimal_symbol msymbol, | |
287 | CORE_ADDR pc, | |
288 | struct obj_section *section, | |
289 | int warn_if_readin) | |
8fb8eb5c | 290 | { |
19ba03f4 | 291 | const struct debug_sym_fns_data *debug_data |
8c42777c | 292 | = symfile_debug_objfile_data_key.get (objfile); |
43f3e411 | 293 | struct compunit_symtab *retval; |
8fb8eb5c DE |
294 | |
295 | fprintf_filtered (gdb_stdlog, | |
43f3e411 | 296 | "qf->find_pc_sect_compunit_symtab (%s, %s, %s, %s, %d)\n", |
cc485e62 | 297 | objfile_debug_name (objfile), |
77e371c0 | 298 | host_address_to_string (msymbol.minsym), |
8fb8eb5c DE |
299 | hex_string (pc), |
300 | host_address_to_string (section), | |
301 | warn_if_readin); | |
302 | ||
43f3e411 DE |
303 | retval |
304 | = debug_data->real_sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
305 | pc, section, | |
306 | warn_if_readin); | |
8fb8eb5c | 307 | |
43f3e411 DE |
308 | fprintf_filtered (gdb_stdlog, |
309 | "qf->find_pc_sect_compunit_symtab (...) = %s\n", | |
310 | retval | |
311 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
312 | : "NULL"); | |
8fb8eb5c DE |
313 | |
314 | return retval; | |
315 | } | |
316 | ||
317 | static void | |
318 | debug_qf_map_symbol_filenames (struct objfile *objfile, | |
319 | symbol_filename_ftype *fun, void *data, | |
320 | int need_fullname) | |
321 | { | |
19ba03f4 | 322 | const struct debug_sym_fns_data *debug_data |
8c42777c | 323 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
324 | fprintf_filtered (gdb_stdlog, |
325 | "qf->map_symbol_filenames (%s, %s, %s, %d)\n", | |
cc485e62 | 326 | objfile_debug_name (objfile), |
8fb8eb5c DE |
327 | host_address_to_string (fun), |
328 | host_address_to_string (data), | |
329 | need_fullname); | |
330 | ||
331 | debug_data->real_sf->qf->map_symbol_filenames (objfile, fun, data, | |
332 | need_fullname); | |
333 | } | |
334 | ||
71a3c369 TT |
335 | static struct compunit_symtab * |
336 | debug_qf_find_compunit_symtab_by_address (struct objfile *objfile, | |
337 | CORE_ADDR address) | |
338 | { | |
339 | const struct debug_sym_fns_data *debug_data | |
8c42777c | 340 | = symfile_debug_objfile_data_key.get (objfile); |
71a3c369 TT |
341 | fprintf_filtered (gdb_stdlog, |
342 | "qf->find_compunit_symtab_by_address (%s, %s)\n", | |
343 | objfile_debug_name (objfile), | |
344 | hex_string (address)); | |
345 | ||
346 | struct compunit_symtab *result = NULL; | |
347 | if (debug_data->real_sf->qf->map_symbol_filenames != NULL) | |
348 | result | |
349 | = debug_data->real_sf->qf->find_compunit_symtab_by_address (objfile, | |
350 | address); | |
351 | ||
352 | fprintf_filtered (gdb_stdlog, | |
353 | "qf->find_compunit_symtab_by_address (...) = %s\n", | |
354 | result | |
355 | ? debug_symtab_name (compunit_primary_filetab (result)) | |
356 | : "NULL"); | |
357 | ||
358 | return result; | |
359 | } | |
360 | ||
8fb8eb5c DE |
361 | static const struct quick_symbol_functions debug_sym_quick_functions = |
362 | { | |
363 | debug_qf_has_symbols, | |
364 | debug_qf_find_last_source_symtab, | |
365 | debug_qf_forget_cached_source_info, | |
366 | debug_qf_map_symtabs_matching_filename, | |
367 | debug_qf_lookup_symbol, | |
368 | debug_qf_print_stats, | |
369 | debug_qf_dump, | |
8fb8eb5c DE |
370 | debug_qf_expand_symtabs_for_function, |
371 | debug_qf_expand_all_symtabs, | |
372 | debug_qf_expand_symtabs_with_fullname, | |
373 | debug_qf_map_matching_symbols, | |
374 | debug_qf_expand_symtabs_matching, | |
43f3e411 | 375 | debug_qf_find_pc_sect_compunit_symtab, |
71a3c369 | 376 | debug_qf_find_compunit_symtab_by_address, |
8fb8eb5c DE |
377 | debug_qf_map_symbol_filenames |
378 | }; | |
379 | \f | |
380 | /* Debugging version of struct sym_probe_fns. */ | |
381 | ||
814cf43a | 382 | static const std::vector<std::unique_ptr<probe>> & |
8fb8eb5c DE |
383 | debug_sym_get_probes (struct objfile *objfile) |
384 | { | |
19ba03f4 | 385 | const struct debug_sym_fns_data *debug_data |
8c42777c | 386 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c | 387 | |
814cf43a | 388 | const std::vector<std::unique_ptr<probe>> &retval |
aaa63a31 | 389 | = debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile); |
8fb8eb5c DE |
390 | |
391 | fprintf_filtered (gdb_stdlog, | |
392 | "probes->sym_get_probes (%s) = %s\n", | |
cc485e62 | 393 | objfile_debug_name (objfile), |
aaa63a31 | 394 | host_address_to_string (retval.data ())); |
8fb8eb5c DE |
395 | |
396 | return retval; | |
397 | } | |
398 | ||
8fb8eb5c DE |
399 | static const struct sym_probe_fns debug_sym_probe_fns = |
400 | { | |
401 | debug_sym_get_probes, | |
8fb8eb5c DE |
402 | }; |
403 | \f | |
404 | /* Debugging version of struct sym_fns. */ | |
405 | ||
406 | static void | |
407 | debug_sym_new_init (struct objfile *objfile) | |
408 | { | |
19ba03f4 | 409 | const struct debug_sym_fns_data *debug_data |
8c42777c | 410 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
411 | |
412 | fprintf_filtered (gdb_stdlog, "sf->sym_new_init (%s)\n", | |
cc485e62 | 413 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
414 | |
415 | debug_data->real_sf->sym_new_init (objfile); | |
416 | } | |
417 | ||
418 | static void | |
419 | debug_sym_init (struct objfile *objfile) | |
420 | { | |
19ba03f4 | 421 | const struct debug_sym_fns_data *debug_data |
8c42777c | 422 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
423 | |
424 | fprintf_filtered (gdb_stdlog, "sf->sym_init (%s)\n", | |
cc485e62 | 425 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
426 | |
427 | debug_data->real_sf->sym_init (objfile); | |
428 | } | |
429 | ||
430 | static void | |
b15cc25c | 431 | debug_sym_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
8fb8eb5c | 432 | { |
19ba03f4 | 433 | const struct debug_sym_fns_data *debug_data |
8c42777c | 434 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
435 | |
436 | fprintf_filtered (gdb_stdlog, "sf->sym_read (%s, 0x%x)\n", | |
b15cc25c | 437 | objfile_debug_name (objfile), (unsigned) symfile_flags); |
8fb8eb5c DE |
438 | |
439 | debug_data->real_sf->sym_read (objfile, symfile_flags); | |
440 | } | |
441 | ||
442 | static void | |
443 | debug_sym_read_psymbols (struct objfile *objfile) | |
444 | { | |
19ba03f4 | 445 | const struct debug_sym_fns_data *debug_data |
8c42777c | 446 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
447 | |
448 | fprintf_filtered (gdb_stdlog, "sf->sym_read_psymbols (%s)\n", | |
cc485e62 | 449 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
450 | |
451 | debug_data->real_sf->sym_read_psymbols (objfile); | |
452 | } | |
453 | ||
454 | static void | |
455 | debug_sym_finish (struct objfile *objfile) | |
456 | { | |
19ba03f4 | 457 | const struct debug_sym_fns_data *debug_data |
8c42777c | 458 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
459 | |
460 | fprintf_filtered (gdb_stdlog, "sf->sym_finish (%s)\n", | |
cc485e62 | 461 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
462 | |
463 | debug_data->real_sf->sym_finish (objfile); | |
464 | } | |
465 | ||
466 | static void | |
467 | debug_sym_offsets (struct objfile *objfile, | |
37e136b1 | 468 | const section_addr_info &info) |
8fb8eb5c | 469 | { |
19ba03f4 | 470 | const struct debug_sym_fns_data *debug_data |
8c42777c | 471 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
472 | |
473 | fprintf_filtered (gdb_stdlog, "sf->sym_offsets (%s, %s)\n", | |
cc485e62 | 474 | objfile_debug_name (objfile), |
37e136b1 | 475 | host_address_to_string (&info)); |
8fb8eb5c DE |
476 | |
477 | debug_data->real_sf->sym_offsets (objfile, info); | |
478 | } | |
479 | ||
480 | static struct symfile_segment_data * | |
481 | debug_sym_segments (bfd *abfd) | |
482 | { | |
483 | /* This API function is annoying, it doesn't take a "this" pointer. | |
484 | Fortunately it is only used in one place where we (re-)lookup the | |
485 | sym_fns table to use. Thus we will never be called. */ | |
486 | gdb_assert_not_reached ("debug_sym_segments called"); | |
487 | } | |
488 | ||
489 | static void | |
490 | debug_sym_read_linetable (struct objfile *objfile) | |
491 | { | |
19ba03f4 | 492 | const struct debug_sym_fns_data *debug_data |
8c42777c | 493 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
494 | |
495 | fprintf_filtered (gdb_stdlog, "sf->sym_read_linetable (%s)\n", | |
cc485e62 | 496 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
497 | |
498 | debug_data->real_sf->sym_read_linetable (objfile); | |
499 | } | |
500 | ||
501 | static bfd_byte * | |
502 | debug_sym_relocate (struct objfile *objfile, asection *sectp, bfd_byte *buf) | |
503 | { | |
19ba03f4 | 504 | const struct debug_sym_fns_data *debug_data |
8c42777c | 505 | = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
506 | bfd_byte *retval; |
507 | ||
508 | retval = debug_data->real_sf->sym_relocate (objfile, sectp, buf); | |
509 | ||
510 | fprintf_filtered (gdb_stdlog, | |
511 | "sf->sym_relocate (%s, %s, %s) = %s\n", | |
cc485e62 | 512 | objfile_debug_name (objfile), |
8fb8eb5c DE |
513 | host_address_to_string (sectp), |
514 | host_address_to_string (buf), | |
515 | host_address_to_string (retval)); | |
516 | ||
517 | return retval; | |
518 | } | |
519 | ||
520 | /* Template of debugging version of struct sym_fns. | |
521 | A copy is made, with sym_flavour updated, and a pointer to the real table | |
522 | installed in real_sf, and then a pointer to the copy is installed in the | |
523 | objfile. */ | |
524 | ||
525 | static const struct sym_fns debug_sym_fns = | |
526 | { | |
527 | debug_sym_new_init, | |
528 | debug_sym_init, | |
529 | debug_sym_read, | |
530 | debug_sym_read_psymbols, | |
531 | debug_sym_finish, | |
532 | debug_sym_offsets, | |
533 | debug_sym_segments, | |
534 | debug_sym_read_linetable, | |
535 | debug_sym_relocate, | |
536 | &debug_sym_probe_fns, | |
537 | &debug_sym_quick_functions | |
538 | }; | |
539 | \f | |
8fb8eb5c DE |
540 | /* Install the debugging versions of the symfile functions for OBJFILE. |
541 | Do not call this if the debug versions are already installed. */ | |
542 | ||
543 | static void | |
544 | install_symfile_debug_logging (struct objfile *objfile) | |
545 | { | |
546 | const struct sym_fns *real_sf; | |
547 | struct debug_sym_fns_data *debug_data; | |
548 | ||
549 | /* The debug versions should not already be installed. */ | |
550 | gdb_assert (!symfile_debug_installed (objfile)); | |
551 | ||
552 | real_sf = objfile->sf; | |
553 | ||
554 | /* Alas we have to preserve NULL entries in REAL_SF. */ | |
8c42777c | 555 | debug_data = new struct debug_sym_fns_data; |
8fb8eb5c DE |
556 | |
557 | #define COPY_SF_PTR(from, to, name, func) \ | |
558 | do { \ | |
559 | if ((from)->name) \ | |
560 | (to)->debug_sf.name = func; \ | |
561 | } while (0) | |
562 | ||
563 | COPY_SF_PTR (real_sf, debug_data, sym_new_init, debug_sym_new_init); | |
564 | COPY_SF_PTR (real_sf, debug_data, sym_init, debug_sym_init); | |
565 | COPY_SF_PTR (real_sf, debug_data, sym_read, debug_sym_read); | |
566 | COPY_SF_PTR (real_sf, debug_data, sym_read_psymbols, | |
567 | debug_sym_read_psymbols); | |
568 | COPY_SF_PTR (real_sf, debug_data, sym_finish, debug_sym_finish); | |
569 | COPY_SF_PTR (real_sf, debug_data, sym_offsets, debug_sym_offsets); | |
570 | COPY_SF_PTR (real_sf, debug_data, sym_segments, debug_sym_segments); | |
571 | COPY_SF_PTR (real_sf, debug_data, sym_read_linetable, | |
572 | debug_sym_read_linetable); | |
573 | COPY_SF_PTR (real_sf, debug_data, sym_relocate, debug_sym_relocate); | |
574 | if (real_sf->sym_probe_fns) | |
575 | debug_data->debug_sf.sym_probe_fns = &debug_sym_probe_fns; | |
576 | debug_data->debug_sf.qf = &debug_sym_quick_functions; | |
577 | ||
578 | #undef COPY_SF_PTR | |
579 | ||
580 | debug_data->real_sf = real_sf; | |
8c42777c | 581 | symfile_debug_objfile_data_key.set (objfile, debug_data); |
8fb8eb5c DE |
582 | objfile->sf = &debug_data->debug_sf; |
583 | } | |
584 | ||
585 | /* Uninstall the debugging versions of the symfile functions for OBJFILE. | |
586 | Do not call this if the debug versions are not installed. */ | |
587 | ||
588 | static void | |
589 | uninstall_symfile_debug_logging (struct objfile *objfile) | |
590 | { | |
591 | struct debug_sym_fns_data *debug_data; | |
592 | ||
593 | /* The debug versions should be currently installed. */ | |
594 | gdb_assert (symfile_debug_installed (objfile)); | |
595 | ||
8c42777c | 596 | debug_data = symfile_debug_objfile_data_key.get (objfile); |
8fb8eb5c DE |
597 | |
598 | objfile->sf = debug_data->real_sf; | |
8c42777c | 599 | symfile_debug_objfile_data_key.clear (objfile); |
8fb8eb5c DE |
600 | } |
601 | ||
602 | /* Call this function to set OBJFILE->SF. | |
603 | Do not set OBJFILE->SF directly. */ | |
604 | ||
605 | void | |
606 | objfile_set_sym_fns (struct objfile *objfile, const struct sym_fns *sf) | |
607 | { | |
608 | if (symfile_debug_installed (objfile)) | |
609 | { | |
610 | gdb_assert (debug_symfile); | |
611 | /* Remove the current one, and reinstall a new one later. */ | |
612 | uninstall_symfile_debug_logging (objfile); | |
613 | } | |
614 | ||
615 | /* Assume debug logging is disabled. */ | |
616 | objfile->sf = sf; | |
617 | ||
618 | /* Turn debug logging on if enabled. */ | |
619 | if (debug_symfile) | |
620 | install_symfile_debug_logging (objfile); | |
621 | } | |
622 | ||
623 | static void | |
eb4c3f4a | 624 | set_debug_symfile (const char *args, int from_tty, struct cmd_list_element *c) |
8fb8eb5c DE |
625 | { |
626 | struct program_space *pspace; | |
8fb8eb5c DE |
627 | |
628 | ALL_PSPACES (pspace) | |
2030c079 | 629 | for (objfile *objfile : pspace->objfiles ()) |
99d89cde TT |
630 | { |
631 | if (debug_symfile) | |
632 | { | |
633 | if (!symfile_debug_installed (objfile)) | |
634 | install_symfile_debug_logging (objfile); | |
635 | } | |
636 | else | |
637 | { | |
638 | if (symfile_debug_installed (objfile)) | |
639 | uninstall_symfile_debug_logging (objfile); | |
640 | } | |
641 | } | |
8fb8eb5c DE |
642 | } |
643 | ||
644 | static void | |
645 | show_debug_symfile (struct ui_file *file, int from_tty, | |
646 | struct cmd_list_element *c, const char *value) | |
647 | { | |
648 | fprintf_filtered (file, _("Symfile debugging is %s.\n"), value); | |
649 | } | |
650 | ||
8fb8eb5c DE |
651 | void |
652 | _initialize_symfile_debug (void) | |
653 | { | |
8fb8eb5c DE |
654 | add_setshow_boolean_cmd ("symfile", no_class, &debug_symfile, _("\ |
655 | Set debugging of the symfile functions."), _("\ | |
656 | Show debugging of the symfile functions."), _("\ | |
657 | When enabled, all calls to the symfile functions are logged."), | |
658 | set_debug_symfile, show_debug_symfile, | |
659 | &setdebuglist, &showdebuglist); | |
660 | ||
661 | /* Note: We don't need a new-objfile observer because debug logging | |
662 | will be installed when objfile init'n calls objfile_set_sym_fns. */ | |
663 | } |