Commit | Line | Data |
---|---|---|
8fb8eb5c DE |
1 | /* Debug logging for the symbol file functions for the GNU debugger, GDB. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2013-2014 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" | |
31 | #include "observer.h" | |
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 | { | |
42 | const struct sym_fns *real_sf; | |
43 | struct sym_fns debug_sf; | |
44 | }; | |
45 | ||
46 | /* We need to record a pointer to the real set of functions for each | |
47 | objfile. */ | |
48 | static const struct objfile_data *symfile_debug_objfile_data_key; | |
49 | ||
50 | /* If non-zero all calls to the symfile functions are logged. */ | |
51 | static int debug_symfile = 0; | |
52 | ||
53 | /* Return non-zero if symfile debug logging is installed. */ | |
54 | ||
55 | static int | |
56 | symfile_debug_installed (struct objfile *objfile) | |
57 | { | |
58 | return (objfile->sf != NULL | |
59 | && objfile_data (objfile, symfile_debug_objfile_data_key) != NULL); | |
60 | } | |
61 | ||
62 | /* Utility to return the name to print for OBJFILE. */ | |
63 | ||
64 | static const char * | |
65 | debug_objfile_name (const struct objfile *objfile) | |
66 | { | |
67 | return lbasename (objfile->original_name); | |
68 | } | |
69 | ||
70 | /* Utility return the name to print for SYMTAB. */ | |
71 | ||
72 | static const char * | |
73 | debug_symtab_name (struct symtab *symtab) | |
74 | { | |
75 | return symtab_to_filename_for_display (symtab); | |
76 | } | |
77 | \f | |
78 | /* Debugging version of struct quick_symbol_functions. */ | |
79 | ||
80 | static int | |
81 | debug_qf_has_symbols (struct objfile *objfile) | |
82 | { | |
83 | const struct debug_sym_fns_data *debug_data = | |
84 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
85 | int retval; | |
86 | ||
87 | retval = debug_data->real_sf->qf->has_symbols (objfile); | |
88 | ||
89 | fprintf_filtered (gdb_stdlog, "qf->has_symbols (%s) = %d\n", | |
90 | debug_objfile_name (objfile), retval); | |
91 | ||
92 | return retval; | |
93 | } | |
94 | ||
95 | static struct symtab * | |
96 | debug_qf_find_last_source_symtab (struct objfile *objfile) | |
97 | { | |
98 | const struct debug_sym_fns_data *debug_data = | |
99 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
100 | struct symtab *retval; | |
101 | ||
102 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (%s)\n", | |
103 | debug_objfile_name (objfile)); | |
104 | ||
105 | retval = debug_data->real_sf->qf->find_last_source_symtab (objfile); | |
106 | ||
107 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (...) = %s\n", | |
108 | retval ? debug_symtab_name (retval) : "NULL"); | |
109 | ||
110 | return retval; | |
111 | } | |
112 | ||
113 | static void | |
114 | debug_qf_forget_cached_source_info (struct objfile *objfile) | |
115 | { | |
116 | const struct debug_sym_fns_data *debug_data = | |
117 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
118 | ||
119 | fprintf_filtered (gdb_stdlog, "qf->forget_cached_source_info (%s)\n", | |
120 | debug_objfile_name (objfile)); | |
121 | ||
122 | debug_data->real_sf->qf->forget_cached_source_info (objfile); | |
123 | } | |
124 | ||
125 | static int | |
126 | debug_qf_map_symtabs_matching_filename (struct objfile *objfile, | |
127 | const char *name, | |
128 | const char *real_path, | |
129 | int (*callback) (struct symtab *, | |
130 | void *), | |
131 | void *data) | |
132 | { | |
133 | const struct debug_sym_fns_data *debug_data = | |
134 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
135 | int retval; | |
136 | ||
137 | fprintf_filtered (gdb_stdlog, | |
138 | "qf->map_symtabs_matching_filename (%s, \"%s\", \"%s\", %s, %s)\n", | |
139 | debug_objfile_name (objfile), name, | |
140 | real_path ? real_path : NULL, | |
141 | host_address_to_string (callback), | |
142 | host_address_to_string (data)); | |
143 | ||
144 | retval = debug_data->real_sf->qf->map_symtabs_matching_filename | |
145 | (objfile, name, real_path, callback, data); | |
146 | ||
147 | fprintf_filtered (gdb_stdlog, | |
148 | "qf->map_symtabs_matching_filename (...) = %d\n", | |
149 | retval); | |
150 | ||
151 | return retval; | |
152 | } | |
153 | ||
43f3e411 | 154 | static struct compunit_symtab * |
8fb8eb5c DE |
155 | debug_qf_lookup_symbol (struct objfile *objfile, int kind, const char *name, |
156 | domain_enum domain) | |
157 | { | |
158 | const struct debug_sym_fns_data *debug_data = | |
159 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
43f3e411 | 160 | struct compunit_symtab *retval; |
8fb8eb5c DE |
161 | |
162 | fprintf_filtered (gdb_stdlog, | |
163 | "qf->lookup_symbol (%s, %d, \"%s\", %s)\n", | |
164 | debug_objfile_name (objfile), kind, name, | |
165 | domain_name (domain)); | |
166 | ||
167 | retval = debug_data->real_sf->qf->lookup_symbol (objfile, kind, name, | |
168 | domain); | |
169 | ||
170 | fprintf_filtered (gdb_stdlog, "qf->lookup_symbol (...) = %s\n", | |
43f3e411 DE |
171 | retval |
172 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
173 | : "NULL"); | |
8fb8eb5c DE |
174 | |
175 | return retval; | |
176 | } | |
177 | ||
178 | static void | |
179 | debug_qf_print_stats (struct objfile *objfile) | |
180 | { | |
181 | const struct debug_sym_fns_data *debug_data = | |
182 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
183 | ||
184 | fprintf_filtered (gdb_stdlog, "qf->print_stats (%s)\n", | |
185 | debug_objfile_name (objfile)); | |
186 | ||
187 | debug_data->real_sf->qf->print_stats (objfile); | |
188 | } | |
189 | ||
190 | static void | |
191 | debug_qf_dump (struct objfile *objfile) | |
192 | { | |
193 | const struct debug_sym_fns_data *debug_data = | |
194 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
195 | ||
196 | fprintf_filtered (gdb_stdlog, "qf->dump (%s)\n", | |
197 | debug_objfile_name (objfile)); | |
198 | ||
199 | debug_data->real_sf->qf->dump (objfile); | |
200 | } | |
201 | ||
202 | static void | |
203 | debug_qf_relocate (struct objfile *objfile, | |
204 | const struct section_offsets *new_offsets, | |
205 | const struct section_offsets *delta) | |
206 | { | |
207 | const struct debug_sym_fns_data *debug_data = | |
208 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
209 | ||
210 | fprintf_filtered (gdb_stdlog, "qf->relocate (%s, %s, %s)\n", | |
211 | debug_objfile_name (objfile), | |
212 | host_address_to_string (new_offsets), | |
213 | host_address_to_string (delta)); | |
214 | ||
215 | debug_data->real_sf->qf->relocate (objfile, new_offsets, delta); | |
216 | } | |
217 | ||
218 | static void | |
219 | debug_qf_expand_symtabs_for_function (struct objfile *objfile, | |
220 | const char *func_name) | |
221 | { | |
222 | const struct debug_sym_fns_data *debug_data = | |
223 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
224 | ||
225 | fprintf_filtered (gdb_stdlog, | |
226 | "qf->expand_symtabs_for_function (%s, \"%s\")\n", | |
227 | debug_objfile_name (objfile), func_name); | |
228 | ||
229 | debug_data->real_sf->qf->expand_symtabs_for_function (objfile, func_name); | |
230 | } | |
231 | ||
232 | static void | |
233 | debug_qf_expand_all_symtabs (struct objfile *objfile) | |
234 | { | |
235 | const struct debug_sym_fns_data *debug_data = | |
236 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
237 | ||
238 | fprintf_filtered (gdb_stdlog, "qf->expand_all_symtabs (%s)\n", | |
239 | debug_objfile_name (objfile)); | |
240 | ||
241 | debug_data->real_sf->qf->expand_all_symtabs (objfile); | |
242 | } | |
243 | ||
244 | static void | |
245 | debug_qf_expand_symtabs_with_fullname (struct objfile *objfile, | |
246 | const char *fullname) | |
247 | { | |
248 | const struct debug_sym_fns_data *debug_data = | |
249 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
250 | ||
251 | fprintf_filtered (gdb_stdlog, | |
252 | "qf->expand_symtabs_with_fullname (%s, \"%s\")\n", | |
253 | debug_objfile_name (objfile), fullname); | |
254 | ||
255 | debug_data->real_sf->qf->expand_symtabs_with_fullname (objfile, fullname); | |
256 | } | |
257 | ||
258 | static void | |
259 | debug_qf_map_matching_symbols (struct objfile *objfile, | |
260 | const char *name, domain_enum namespace, | |
261 | int global, | |
262 | int (*callback) (struct block *, | |
263 | struct symbol *, void *), | |
264 | void *data, | |
265 | symbol_compare_ftype *match, | |
266 | symbol_compare_ftype *ordered_compare) | |
267 | { | |
268 | const struct debug_sym_fns_data *debug_data = | |
269 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
270 | ||
271 | fprintf_filtered (gdb_stdlog, | |
272 | "qf->map_matching_symbols (%s, \"%s\", %s, %d, %s, %s, %s, %s)\n", | |
273 | debug_objfile_name (objfile), name, | |
274 | domain_name (namespace), global, | |
275 | host_address_to_string (callback), | |
276 | host_address_to_string (data), | |
277 | host_address_to_string (match), | |
278 | host_address_to_string (ordered_compare)); | |
279 | ||
280 | debug_data->real_sf->qf->map_matching_symbols (objfile, name, | |
281 | namespace, global, | |
282 | callback, data, | |
283 | match, | |
284 | ordered_compare); | |
285 | } | |
286 | ||
287 | static void | |
e86b67d3 JB |
288 | debug_qf_expand_symtabs_matching |
289 | (struct objfile *objfile, | |
290 | expand_symtabs_file_matcher_ftype *file_matcher, | |
291 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
292 | enum search_domain kind, void *data) | |
8fb8eb5c DE |
293 | { |
294 | const struct debug_sym_fns_data *debug_data = | |
295 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
296 | ||
297 | fprintf_filtered (gdb_stdlog, | |
298 | "qf->expand_symtabs_matching (%s, %s, %s, %s, %s)\n", | |
299 | debug_objfile_name (objfile), | |
300 | host_address_to_string (file_matcher), | |
3f03e7b1 | 301 | host_address_to_string (symbol_matcher), |
8fb8eb5c DE |
302 | search_domain_name (kind), |
303 | host_address_to_string (data)); | |
304 | ||
305 | debug_data->real_sf->qf->expand_symtabs_matching (objfile, | |
306 | file_matcher, | |
3f03e7b1 | 307 | symbol_matcher, |
8fb8eb5c DE |
308 | kind, data); |
309 | } | |
310 | ||
43f3e411 DE |
311 | static struct compunit_symtab * |
312 | debug_qf_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
313 | struct bound_minimal_symbol msymbol, | |
314 | CORE_ADDR pc, | |
315 | struct obj_section *section, | |
316 | int warn_if_readin) | |
8fb8eb5c DE |
317 | { |
318 | const struct debug_sym_fns_data *debug_data = | |
319 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
43f3e411 | 320 | struct compunit_symtab *retval; |
8fb8eb5c DE |
321 | |
322 | fprintf_filtered (gdb_stdlog, | |
43f3e411 | 323 | "qf->find_pc_sect_compunit_symtab (%s, %s, %s, %s, %d)\n", |
8fb8eb5c | 324 | debug_objfile_name (objfile), |
77e371c0 | 325 | host_address_to_string (msymbol.minsym), |
8fb8eb5c DE |
326 | hex_string (pc), |
327 | host_address_to_string (section), | |
328 | warn_if_readin); | |
329 | ||
43f3e411 DE |
330 | retval |
331 | = debug_data->real_sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
332 | pc, section, | |
333 | warn_if_readin); | |
8fb8eb5c | 334 | |
43f3e411 DE |
335 | fprintf_filtered (gdb_stdlog, |
336 | "qf->find_pc_sect_compunit_symtab (...) = %s\n", | |
337 | retval | |
338 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
339 | : "NULL"); | |
8fb8eb5c DE |
340 | |
341 | return retval; | |
342 | } | |
343 | ||
344 | static void | |
345 | debug_qf_map_symbol_filenames (struct objfile *objfile, | |
346 | symbol_filename_ftype *fun, void *data, | |
347 | int need_fullname) | |
348 | { | |
349 | const struct debug_sym_fns_data *debug_data = | |
350 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
351 | fprintf_filtered (gdb_stdlog, | |
352 | "qf->map_symbol_filenames (%s, %s, %s, %d)\n", | |
353 | debug_objfile_name (objfile), | |
354 | host_address_to_string (fun), | |
355 | host_address_to_string (data), | |
356 | need_fullname); | |
357 | ||
358 | debug_data->real_sf->qf->map_symbol_filenames (objfile, fun, data, | |
359 | need_fullname); | |
360 | } | |
361 | ||
362 | static const struct quick_symbol_functions debug_sym_quick_functions = | |
363 | { | |
364 | debug_qf_has_symbols, | |
365 | debug_qf_find_last_source_symtab, | |
366 | debug_qf_forget_cached_source_info, | |
367 | debug_qf_map_symtabs_matching_filename, | |
368 | debug_qf_lookup_symbol, | |
369 | debug_qf_print_stats, | |
370 | debug_qf_dump, | |
371 | debug_qf_relocate, | |
372 | debug_qf_expand_symtabs_for_function, | |
373 | debug_qf_expand_all_symtabs, | |
374 | debug_qf_expand_symtabs_with_fullname, | |
375 | debug_qf_map_matching_symbols, | |
376 | debug_qf_expand_symtabs_matching, | |
43f3e411 | 377 | debug_qf_find_pc_sect_compunit_symtab, |
8fb8eb5c DE |
378 | debug_qf_map_symbol_filenames |
379 | }; | |
380 | \f | |
381 | /* Debugging version of struct sym_probe_fns. */ | |
382 | ||
383 | static VEC (probe_p) * | |
384 | debug_sym_get_probes (struct objfile *objfile) | |
385 | { | |
386 | const struct debug_sym_fns_data *debug_data = | |
387 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
388 | VEC (probe_p) *retval; | |
389 | ||
390 | retval = debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile); | |
391 | ||
392 | fprintf_filtered (gdb_stdlog, | |
393 | "probes->sym_get_probes (%s) = %s\n", | |
394 | debug_objfile_name (objfile), | |
395 | host_address_to_string (retval)); | |
396 | ||
397 | return retval; | |
398 | } | |
399 | ||
8fb8eb5c DE |
400 | static const struct sym_probe_fns debug_sym_probe_fns = |
401 | { | |
402 | debug_sym_get_probes, | |
8fb8eb5c DE |
403 | }; |
404 | \f | |
405 | /* Debugging version of struct sym_fns. */ | |
406 | ||
407 | static void | |
408 | debug_sym_new_init (struct objfile *objfile) | |
409 | { | |
410 | const struct debug_sym_fns_data *debug_data = | |
411 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
412 | ||
413 | fprintf_filtered (gdb_stdlog, "sf->sym_new_init (%s)\n", | |
414 | debug_objfile_name (objfile)); | |
415 | ||
416 | debug_data->real_sf->sym_new_init (objfile); | |
417 | } | |
418 | ||
419 | static void | |
420 | debug_sym_init (struct objfile *objfile) | |
421 | { | |
422 | const struct debug_sym_fns_data *debug_data = | |
423 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
424 | ||
425 | fprintf_filtered (gdb_stdlog, "sf->sym_init (%s)\n", | |
426 | debug_objfile_name (objfile)); | |
427 | ||
428 | debug_data->real_sf->sym_init (objfile); | |
429 | } | |
430 | ||
431 | static void | |
432 | debug_sym_read (struct objfile *objfile, int symfile_flags) | |
433 | { | |
434 | const struct debug_sym_fns_data *debug_data = | |
435 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
436 | ||
437 | fprintf_filtered (gdb_stdlog, "sf->sym_read (%s, 0x%x)\n", | |
438 | debug_objfile_name (objfile), symfile_flags); | |
439 | ||
440 | debug_data->real_sf->sym_read (objfile, symfile_flags); | |
441 | } | |
442 | ||
443 | static void | |
444 | debug_sym_read_psymbols (struct objfile *objfile) | |
445 | { | |
446 | const struct debug_sym_fns_data *debug_data = | |
447 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
448 | ||
449 | fprintf_filtered (gdb_stdlog, "sf->sym_read_psymbols (%s)\n", | |
450 | debug_objfile_name (objfile)); | |
451 | ||
452 | debug_data->real_sf->sym_read_psymbols (objfile); | |
453 | } | |
454 | ||
455 | static void | |
456 | debug_sym_finish (struct objfile *objfile) | |
457 | { | |
458 | const struct debug_sym_fns_data *debug_data = | |
459 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
460 | ||
461 | fprintf_filtered (gdb_stdlog, "sf->sym_finish (%s)\n", | |
462 | debug_objfile_name (objfile)); | |
463 | ||
464 | debug_data->real_sf->sym_finish (objfile); | |
465 | } | |
466 | ||
467 | static void | |
468 | debug_sym_offsets (struct objfile *objfile, | |
469 | const struct section_addr_info *info) | |
470 | { | |
471 | const struct debug_sym_fns_data *debug_data = | |
472 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
473 | ||
474 | fprintf_filtered (gdb_stdlog, "sf->sym_offsets (%s, %s)\n", | |
475 | debug_objfile_name (objfile), | |
476 | host_address_to_string (info)); | |
477 | ||
478 | debug_data->real_sf->sym_offsets (objfile, info); | |
479 | } | |
480 | ||
481 | static struct symfile_segment_data * | |
482 | debug_sym_segments (bfd *abfd) | |
483 | { | |
484 | /* This API function is annoying, it doesn't take a "this" pointer. | |
485 | Fortunately it is only used in one place where we (re-)lookup the | |
486 | sym_fns table to use. Thus we will never be called. */ | |
487 | gdb_assert_not_reached ("debug_sym_segments called"); | |
488 | } | |
489 | ||
490 | static void | |
491 | debug_sym_read_linetable (struct objfile *objfile) | |
492 | { | |
493 | const struct debug_sym_fns_data *debug_data = | |
494 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
495 | ||
496 | fprintf_filtered (gdb_stdlog, "sf->sym_read_linetable (%s)\n", | |
497 | debug_objfile_name (objfile)); | |
498 | ||
499 | debug_data->real_sf->sym_read_linetable (objfile); | |
500 | } | |
501 | ||
502 | static bfd_byte * | |
503 | debug_sym_relocate (struct objfile *objfile, asection *sectp, bfd_byte *buf) | |
504 | { | |
505 | const struct debug_sym_fns_data *debug_data = | |
506 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
507 | bfd_byte *retval; | |
508 | ||
509 | retval = debug_data->real_sf->sym_relocate (objfile, sectp, buf); | |
510 | ||
511 | fprintf_filtered (gdb_stdlog, | |
512 | "sf->sym_relocate (%s, %s, %s) = %s\n", | |
513 | debug_objfile_name (objfile), | |
514 | host_address_to_string (sectp), | |
515 | host_address_to_string (buf), | |
516 | host_address_to_string (retval)); | |
517 | ||
518 | return retval; | |
519 | } | |
520 | ||
521 | /* Template of debugging version of struct sym_fns. | |
522 | A copy is made, with sym_flavour updated, and a pointer to the real table | |
523 | installed in real_sf, and then a pointer to the copy is installed in the | |
524 | objfile. */ | |
525 | ||
526 | static const struct sym_fns debug_sym_fns = | |
527 | { | |
528 | debug_sym_new_init, | |
529 | debug_sym_init, | |
530 | debug_sym_read, | |
531 | debug_sym_read_psymbols, | |
532 | debug_sym_finish, | |
533 | debug_sym_offsets, | |
534 | debug_sym_segments, | |
535 | debug_sym_read_linetable, | |
536 | debug_sym_relocate, | |
537 | &debug_sym_probe_fns, | |
538 | &debug_sym_quick_functions | |
539 | }; | |
540 | \f | |
541 | /* Free the copy of sym_fns recorded in the registry. */ | |
542 | ||
543 | static void | |
544 | symfile_debug_free_objfile (struct objfile *objfile, void *datum) | |
545 | { | |
546 | xfree (datum); | |
547 | } | |
548 | ||
549 | /* Install the debugging versions of the symfile functions for OBJFILE. | |
550 | Do not call this if the debug versions are already installed. */ | |
551 | ||
552 | static void | |
553 | install_symfile_debug_logging (struct objfile *objfile) | |
554 | { | |
555 | const struct sym_fns *real_sf; | |
556 | struct debug_sym_fns_data *debug_data; | |
557 | ||
558 | /* The debug versions should not already be installed. */ | |
559 | gdb_assert (!symfile_debug_installed (objfile)); | |
560 | ||
561 | real_sf = objfile->sf; | |
562 | ||
563 | /* Alas we have to preserve NULL entries in REAL_SF. */ | |
41bf6aca | 564 | debug_data = XCNEW (struct debug_sym_fns_data); |
8fb8eb5c DE |
565 | |
566 | #define COPY_SF_PTR(from, to, name, func) \ | |
567 | do { \ | |
568 | if ((from)->name) \ | |
569 | (to)->debug_sf.name = func; \ | |
570 | } while (0) | |
571 | ||
572 | COPY_SF_PTR (real_sf, debug_data, sym_new_init, debug_sym_new_init); | |
573 | COPY_SF_PTR (real_sf, debug_data, sym_init, debug_sym_init); | |
574 | COPY_SF_PTR (real_sf, debug_data, sym_read, debug_sym_read); | |
575 | COPY_SF_PTR (real_sf, debug_data, sym_read_psymbols, | |
576 | debug_sym_read_psymbols); | |
577 | COPY_SF_PTR (real_sf, debug_data, sym_finish, debug_sym_finish); | |
578 | COPY_SF_PTR (real_sf, debug_data, sym_offsets, debug_sym_offsets); | |
579 | COPY_SF_PTR (real_sf, debug_data, sym_segments, debug_sym_segments); | |
580 | COPY_SF_PTR (real_sf, debug_data, sym_read_linetable, | |
581 | debug_sym_read_linetable); | |
582 | COPY_SF_PTR (real_sf, debug_data, sym_relocate, debug_sym_relocate); | |
583 | if (real_sf->sym_probe_fns) | |
584 | debug_data->debug_sf.sym_probe_fns = &debug_sym_probe_fns; | |
585 | debug_data->debug_sf.qf = &debug_sym_quick_functions; | |
586 | ||
587 | #undef COPY_SF_PTR | |
588 | ||
589 | debug_data->real_sf = real_sf; | |
590 | set_objfile_data (objfile, symfile_debug_objfile_data_key, debug_data); | |
591 | objfile->sf = &debug_data->debug_sf; | |
592 | } | |
593 | ||
594 | /* Uninstall the debugging versions of the symfile functions for OBJFILE. | |
595 | Do not call this if the debug versions are not installed. */ | |
596 | ||
597 | static void | |
598 | uninstall_symfile_debug_logging (struct objfile *objfile) | |
599 | { | |
600 | struct debug_sym_fns_data *debug_data; | |
601 | ||
602 | /* The debug versions should be currently installed. */ | |
603 | gdb_assert (symfile_debug_installed (objfile)); | |
604 | ||
605 | debug_data = objfile_data (objfile, symfile_debug_objfile_data_key); | |
606 | ||
607 | objfile->sf = debug_data->real_sf; | |
608 | xfree (debug_data); | |
609 | set_objfile_data (objfile, symfile_debug_objfile_data_key, NULL); | |
610 | } | |
611 | ||
612 | /* Call this function to set OBJFILE->SF. | |
613 | Do not set OBJFILE->SF directly. */ | |
614 | ||
615 | void | |
616 | objfile_set_sym_fns (struct objfile *objfile, const struct sym_fns *sf) | |
617 | { | |
618 | if (symfile_debug_installed (objfile)) | |
619 | { | |
620 | gdb_assert (debug_symfile); | |
621 | /* Remove the current one, and reinstall a new one later. */ | |
622 | uninstall_symfile_debug_logging (objfile); | |
623 | } | |
624 | ||
625 | /* Assume debug logging is disabled. */ | |
626 | objfile->sf = sf; | |
627 | ||
628 | /* Turn debug logging on if enabled. */ | |
629 | if (debug_symfile) | |
630 | install_symfile_debug_logging (objfile); | |
631 | } | |
632 | ||
633 | static void | |
634 | set_debug_symfile (char *args, int from_tty, struct cmd_list_element *c) | |
635 | { | |
636 | struct program_space *pspace; | |
637 | struct objfile *objfile; | |
638 | ||
639 | ALL_PSPACES (pspace) | |
640 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
641 | { | |
642 | if (debug_symfile) | |
643 | { | |
644 | if (!symfile_debug_installed (objfile)) | |
645 | install_symfile_debug_logging (objfile); | |
646 | } | |
647 | else | |
648 | { | |
649 | if (symfile_debug_installed (objfile)) | |
650 | uninstall_symfile_debug_logging (objfile); | |
651 | } | |
652 | } | |
653 | } | |
654 | ||
655 | static void | |
656 | show_debug_symfile (struct ui_file *file, int from_tty, | |
657 | struct cmd_list_element *c, const char *value) | |
658 | { | |
659 | fprintf_filtered (file, _("Symfile debugging is %s.\n"), value); | |
660 | } | |
661 | ||
662 | initialize_file_ftype _initialize_symfile_debug; | |
663 | ||
664 | void | |
665 | _initialize_symfile_debug (void) | |
666 | { | |
667 | symfile_debug_objfile_data_key | |
668 | = register_objfile_data_with_cleanup (NULL, symfile_debug_free_objfile); | |
669 | ||
670 | add_setshow_boolean_cmd ("symfile", no_class, &debug_symfile, _("\ | |
671 | Set debugging of the symfile functions."), _("\ | |
672 | Show debugging of the symfile functions."), _("\ | |
673 | When enabled, all calls to the symfile functions are logged."), | |
674 | set_debug_symfile, show_debug_symfile, | |
675 | &setdebuglist, &showdebuglist); | |
676 | ||
677 | /* Note: We don't need a new-objfile observer because debug logging | |
678 | will be installed when objfile init'n calls objfile_set_sym_fns. */ | |
679 | } |