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8fb8eb5c DE |
1 | /* Debug logging for the symbol file functions for the GNU debugger, GDB. |
2 | ||
32d0add0 | 3 | Copyright (C) 2013-2015 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 | ||
8fb8eb5c DE |
62 | /* Utility return the name to print for SYMTAB. */ |
63 | ||
64 | static const char * | |
65 | debug_symtab_name (struct symtab *symtab) | |
66 | { | |
67 | return symtab_to_filename_for_display (symtab); | |
68 | } | |
69 | \f | |
70 | /* Debugging version of struct quick_symbol_functions. */ | |
71 | ||
72 | static int | |
73 | debug_qf_has_symbols (struct objfile *objfile) | |
74 | { | |
75 | const struct debug_sym_fns_data *debug_data = | |
76 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
77 | int retval; | |
78 | ||
79 | retval = debug_data->real_sf->qf->has_symbols (objfile); | |
80 | ||
81 | fprintf_filtered (gdb_stdlog, "qf->has_symbols (%s) = %d\n", | |
cc485e62 | 82 | objfile_debug_name (objfile), retval); |
8fb8eb5c DE |
83 | |
84 | return retval; | |
85 | } | |
86 | ||
87 | static struct symtab * | |
88 | debug_qf_find_last_source_symtab (struct objfile *objfile) | |
89 | { | |
90 | const struct debug_sym_fns_data *debug_data = | |
91 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
92 | struct symtab *retval; | |
93 | ||
94 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (%s)\n", | |
cc485e62 | 95 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
96 | |
97 | retval = debug_data->real_sf->qf->find_last_source_symtab (objfile); | |
98 | ||
99 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (...) = %s\n", | |
100 | retval ? debug_symtab_name (retval) : "NULL"); | |
101 | ||
102 | return retval; | |
103 | } | |
104 | ||
105 | static void | |
106 | debug_qf_forget_cached_source_info (struct objfile *objfile) | |
107 | { | |
108 | const struct debug_sym_fns_data *debug_data = | |
109 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
110 | ||
111 | fprintf_filtered (gdb_stdlog, "qf->forget_cached_source_info (%s)\n", | |
cc485e62 | 112 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
113 | |
114 | debug_data->real_sf->qf->forget_cached_source_info (objfile); | |
115 | } | |
116 | ||
117 | static int | |
118 | debug_qf_map_symtabs_matching_filename (struct objfile *objfile, | |
119 | const char *name, | |
120 | const char *real_path, | |
121 | int (*callback) (struct symtab *, | |
122 | void *), | |
123 | void *data) | |
124 | { | |
125 | const struct debug_sym_fns_data *debug_data = | |
126 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
127 | int retval; | |
128 | ||
129 | fprintf_filtered (gdb_stdlog, | |
130 | "qf->map_symtabs_matching_filename (%s, \"%s\", \"%s\", %s, %s)\n", | |
cc485e62 | 131 | objfile_debug_name (objfile), name, |
8fb8eb5c DE |
132 | real_path ? real_path : NULL, |
133 | host_address_to_string (callback), | |
134 | host_address_to_string (data)); | |
135 | ||
136 | retval = debug_data->real_sf->qf->map_symtabs_matching_filename | |
137 | (objfile, name, real_path, callback, data); | |
138 | ||
139 | fprintf_filtered (gdb_stdlog, | |
140 | "qf->map_symtabs_matching_filename (...) = %d\n", | |
141 | retval); | |
142 | ||
143 | return retval; | |
144 | } | |
145 | ||
43f3e411 | 146 | static struct compunit_symtab * |
8fb8eb5c DE |
147 | debug_qf_lookup_symbol (struct objfile *objfile, int kind, const char *name, |
148 | domain_enum domain) | |
149 | { | |
150 | const struct debug_sym_fns_data *debug_data = | |
151 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
43f3e411 | 152 | struct compunit_symtab *retval; |
8fb8eb5c DE |
153 | |
154 | fprintf_filtered (gdb_stdlog, | |
155 | "qf->lookup_symbol (%s, %d, \"%s\", %s)\n", | |
cc485e62 | 156 | objfile_debug_name (objfile), kind, name, |
8fb8eb5c DE |
157 | domain_name (domain)); |
158 | ||
159 | retval = debug_data->real_sf->qf->lookup_symbol (objfile, kind, name, | |
160 | domain); | |
161 | ||
162 | fprintf_filtered (gdb_stdlog, "qf->lookup_symbol (...) = %s\n", | |
43f3e411 DE |
163 | retval |
164 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
165 | : "NULL"); | |
8fb8eb5c DE |
166 | |
167 | return retval; | |
168 | } | |
169 | ||
170 | static void | |
171 | debug_qf_print_stats (struct objfile *objfile) | |
172 | { | |
173 | const struct debug_sym_fns_data *debug_data = | |
174 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
175 | ||
176 | fprintf_filtered (gdb_stdlog, "qf->print_stats (%s)\n", | |
cc485e62 | 177 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
178 | |
179 | debug_data->real_sf->qf->print_stats (objfile); | |
180 | } | |
181 | ||
182 | static void | |
183 | debug_qf_dump (struct objfile *objfile) | |
184 | { | |
185 | const struct debug_sym_fns_data *debug_data = | |
186 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
187 | ||
188 | fprintf_filtered (gdb_stdlog, "qf->dump (%s)\n", | |
cc485e62 | 189 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
190 | |
191 | debug_data->real_sf->qf->dump (objfile); | |
192 | } | |
193 | ||
194 | static void | |
195 | debug_qf_relocate (struct objfile *objfile, | |
196 | const struct section_offsets *new_offsets, | |
197 | const struct section_offsets *delta) | |
198 | { | |
199 | const struct debug_sym_fns_data *debug_data = | |
200 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
201 | ||
202 | fprintf_filtered (gdb_stdlog, "qf->relocate (%s, %s, %s)\n", | |
cc485e62 | 203 | objfile_debug_name (objfile), |
8fb8eb5c DE |
204 | host_address_to_string (new_offsets), |
205 | host_address_to_string (delta)); | |
206 | ||
207 | debug_data->real_sf->qf->relocate (objfile, new_offsets, delta); | |
208 | } | |
209 | ||
210 | static void | |
211 | debug_qf_expand_symtabs_for_function (struct objfile *objfile, | |
212 | const char *func_name) | |
213 | { | |
214 | const struct debug_sym_fns_data *debug_data = | |
215 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
216 | ||
217 | fprintf_filtered (gdb_stdlog, | |
218 | "qf->expand_symtabs_for_function (%s, \"%s\")\n", | |
cc485e62 | 219 | objfile_debug_name (objfile), func_name); |
8fb8eb5c DE |
220 | |
221 | debug_data->real_sf->qf->expand_symtabs_for_function (objfile, func_name); | |
222 | } | |
223 | ||
224 | static void | |
225 | debug_qf_expand_all_symtabs (struct objfile *objfile) | |
226 | { | |
227 | const struct debug_sym_fns_data *debug_data = | |
228 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
229 | ||
230 | fprintf_filtered (gdb_stdlog, "qf->expand_all_symtabs (%s)\n", | |
cc485e62 | 231 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
232 | |
233 | debug_data->real_sf->qf->expand_all_symtabs (objfile); | |
234 | } | |
235 | ||
236 | static void | |
237 | debug_qf_expand_symtabs_with_fullname (struct objfile *objfile, | |
238 | const char *fullname) | |
239 | { | |
240 | const struct debug_sym_fns_data *debug_data = | |
241 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
242 | ||
243 | fprintf_filtered (gdb_stdlog, | |
244 | "qf->expand_symtabs_with_fullname (%s, \"%s\")\n", | |
cc485e62 | 245 | objfile_debug_name (objfile), fullname); |
8fb8eb5c DE |
246 | |
247 | debug_data->real_sf->qf->expand_symtabs_with_fullname (objfile, fullname); | |
248 | } | |
249 | ||
250 | static void | |
251 | debug_qf_map_matching_symbols (struct objfile *objfile, | |
fe978cb0 | 252 | const char *name, domain_enum domain, |
8fb8eb5c DE |
253 | int global, |
254 | int (*callback) (struct block *, | |
255 | struct symbol *, void *), | |
256 | void *data, | |
257 | symbol_compare_ftype *match, | |
258 | symbol_compare_ftype *ordered_compare) | |
259 | { | |
260 | const struct debug_sym_fns_data *debug_data = | |
261 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
262 | ||
263 | fprintf_filtered (gdb_stdlog, | |
264 | "qf->map_matching_symbols (%s, \"%s\", %s, %d, %s, %s, %s, %s)\n", | |
cc485e62 | 265 | objfile_debug_name (objfile), name, |
fe978cb0 | 266 | domain_name (domain), global, |
8fb8eb5c DE |
267 | host_address_to_string (callback), |
268 | host_address_to_string (data), | |
269 | host_address_to_string (match), | |
270 | host_address_to_string (ordered_compare)); | |
271 | ||
272 | debug_data->real_sf->qf->map_matching_symbols (objfile, name, | |
fe978cb0 | 273 | domain, global, |
8fb8eb5c DE |
274 | callback, data, |
275 | match, | |
276 | ordered_compare); | |
277 | } | |
278 | ||
279 | static void | |
e86b67d3 JB |
280 | debug_qf_expand_symtabs_matching |
281 | (struct objfile *objfile, | |
282 | expand_symtabs_file_matcher_ftype *file_matcher, | |
283 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 284 | expand_symtabs_exp_notify_ftype *expansion_notify, |
e86b67d3 | 285 | enum search_domain kind, void *data) |
8fb8eb5c DE |
286 | { |
287 | const struct debug_sym_fns_data *debug_data = | |
288 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
289 | ||
290 | fprintf_filtered (gdb_stdlog, | |
276d885b | 291 | "qf->expand_symtabs_matching (%s, %s, %s, %s, %s, %s)\n", |
cc485e62 | 292 | objfile_debug_name (objfile), |
8fb8eb5c | 293 | host_address_to_string (file_matcher), |
3f03e7b1 | 294 | host_address_to_string (symbol_matcher), |
276d885b | 295 | host_address_to_string (expansion_notify), |
8fb8eb5c DE |
296 | search_domain_name (kind), |
297 | host_address_to_string (data)); | |
298 | ||
299 | debug_data->real_sf->qf->expand_symtabs_matching (objfile, | |
300 | file_matcher, | |
3f03e7b1 | 301 | symbol_matcher, |
276d885b | 302 | expansion_notify, |
8fb8eb5c DE |
303 | kind, data); |
304 | } | |
305 | ||
43f3e411 DE |
306 | static struct compunit_symtab * |
307 | debug_qf_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
308 | struct bound_minimal_symbol msymbol, | |
309 | CORE_ADDR pc, | |
310 | struct obj_section *section, | |
311 | int warn_if_readin) | |
8fb8eb5c DE |
312 | { |
313 | const struct debug_sym_fns_data *debug_data = | |
314 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
43f3e411 | 315 | struct compunit_symtab *retval; |
8fb8eb5c DE |
316 | |
317 | fprintf_filtered (gdb_stdlog, | |
43f3e411 | 318 | "qf->find_pc_sect_compunit_symtab (%s, %s, %s, %s, %d)\n", |
cc485e62 | 319 | objfile_debug_name (objfile), |
77e371c0 | 320 | host_address_to_string (msymbol.minsym), |
8fb8eb5c DE |
321 | hex_string (pc), |
322 | host_address_to_string (section), | |
323 | warn_if_readin); | |
324 | ||
43f3e411 DE |
325 | retval |
326 | = debug_data->real_sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
327 | pc, section, | |
328 | warn_if_readin); | |
8fb8eb5c | 329 | |
43f3e411 DE |
330 | fprintf_filtered (gdb_stdlog, |
331 | "qf->find_pc_sect_compunit_symtab (...) = %s\n", | |
332 | retval | |
333 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
334 | : "NULL"); | |
8fb8eb5c DE |
335 | |
336 | return retval; | |
337 | } | |
338 | ||
339 | static void | |
340 | debug_qf_map_symbol_filenames (struct objfile *objfile, | |
341 | symbol_filename_ftype *fun, void *data, | |
342 | int need_fullname) | |
343 | { | |
344 | const struct debug_sym_fns_data *debug_data = | |
345 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
346 | fprintf_filtered (gdb_stdlog, | |
347 | "qf->map_symbol_filenames (%s, %s, %s, %d)\n", | |
cc485e62 | 348 | objfile_debug_name (objfile), |
8fb8eb5c DE |
349 | host_address_to_string (fun), |
350 | host_address_to_string (data), | |
351 | need_fullname); | |
352 | ||
353 | debug_data->real_sf->qf->map_symbol_filenames (objfile, fun, data, | |
354 | need_fullname); | |
355 | } | |
356 | ||
357 | static const struct quick_symbol_functions debug_sym_quick_functions = | |
358 | { | |
359 | debug_qf_has_symbols, | |
360 | debug_qf_find_last_source_symtab, | |
361 | debug_qf_forget_cached_source_info, | |
362 | debug_qf_map_symtabs_matching_filename, | |
363 | debug_qf_lookup_symbol, | |
364 | debug_qf_print_stats, | |
365 | debug_qf_dump, | |
366 | debug_qf_relocate, | |
367 | debug_qf_expand_symtabs_for_function, | |
368 | debug_qf_expand_all_symtabs, | |
369 | debug_qf_expand_symtabs_with_fullname, | |
370 | debug_qf_map_matching_symbols, | |
371 | debug_qf_expand_symtabs_matching, | |
43f3e411 | 372 | debug_qf_find_pc_sect_compunit_symtab, |
8fb8eb5c DE |
373 | debug_qf_map_symbol_filenames |
374 | }; | |
375 | \f | |
376 | /* Debugging version of struct sym_probe_fns. */ | |
377 | ||
378 | static VEC (probe_p) * | |
379 | debug_sym_get_probes (struct objfile *objfile) | |
380 | { | |
381 | const struct debug_sym_fns_data *debug_data = | |
382 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
383 | VEC (probe_p) *retval; | |
384 | ||
385 | retval = debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile); | |
386 | ||
387 | fprintf_filtered (gdb_stdlog, | |
388 | "probes->sym_get_probes (%s) = %s\n", | |
cc485e62 | 389 | objfile_debug_name (objfile), |
8fb8eb5c DE |
390 | host_address_to_string (retval)); |
391 | ||
392 | return retval; | |
393 | } | |
394 | ||
8fb8eb5c DE |
395 | static const struct sym_probe_fns debug_sym_probe_fns = |
396 | { | |
397 | debug_sym_get_probes, | |
8fb8eb5c DE |
398 | }; |
399 | \f | |
400 | /* Debugging version of struct sym_fns. */ | |
401 | ||
402 | static void | |
403 | debug_sym_new_init (struct objfile *objfile) | |
404 | { | |
405 | const struct debug_sym_fns_data *debug_data = | |
406 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
407 | ||
408 | fprintf_filtered (gdb_stdlog, "sf->sym_new_init (%s)\n", | |
cc485e62 | 409 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
410 | |
411 | debug_data->real_sf->sym_new_init (objfile); | |
412 | } | |
413 | ||
414 | static void | |
415 | debug_sym_init (struct objfile *objfile) | |
416 | { | |
417 | const struct debug_sym_fns_data *debug_data = | |
418 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
419 | ||
420 | fprintf_filtered (gdb_stdlog, "sf->sym_init (%s)\n", | |
cc485e62 | 421 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
422 | |
423 | debug_data->real_sf->sym_init (objfile); | |
424 | } | |
425 | ||
426 | static void | |
427 | debug_sym_read (struct objfile *objfile, int symfile_flags) | |
428 | { | |
429 | const struct debug_sym_fns_data *debug_data = | |
430 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
431 | ||
432 | fprintf_filtered (gdb_stdlog, "sf->sym_read (%s, 0x%x)\n", | |
cc485e62 | 433 | objfile_debug_name (objfile), symfile_flags); |
8fb8eb5c DE |
434 | |
435 | debug_data->real_sf->sym_read (objfile, symfile_flags); | |
436 | } | |
437 | ||
438 | static void | |
439 | debug_sym_read_psymbols (struct objfile *objfile) | |
440 | { | |
441 | const struct debug_sym_fns_data *debug_data = | |
442 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
443 | ||
444 | fprintf_filtered (gdb_stdlog, "sf->sym_read_psymbols (%s)\n", | |
cc485e62 | 445 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
446 | |
447 | debug_data->real_sf->sym_read_psymbols (objfile); | |
448 | } | |
449 | ||
450 | static void | |
451 | debug_sym_finish (struct objfile *objfile) | |
452 | { | |
453 | const struct debug_sym_fns_data *debug_data = | |
454 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
455 | ||
456 | fprintf_filtered (gdb_stdlog, "sf->sym_finish (%s)\n", | |
cc485e62 | 457 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
458 | |
459 | debug_data->real_sf->sym_finish (objfile); | |
460 | } | |
461 | ||
462 | static void | |
463 | debug_sym_offsets (struct objfile *objfile, | |
464 | const struct section_addr_info *info) | |
465 | { | |
466 | const struct debug_sym_fns_data *debug_data = | |
467 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
468 | ||
469 | fprintf_filtered (gdb_stdlog, "sf->sym_offsets (%s, %s)\n", | |
cc485e62 | 470 | objfile_debug_name (objfile), |
8fb8eb5c DE |
471 | host_address_to_string (info)); |
472 | ||
473 | debug_data->real_sf->sym_offsets (objfile, info); | |
474 | } | |
475 | ||
476 | static struct symfile_segment_data * | |
477 | debug_sym_segments (bfd *abfd) | |
478 | { | |
479 | /* This API function is annoying, it doesn't take a "this" pointer. | |
480 | Fortunately it is only used in one place where we (re-)lookup the | |
481 | sym_fns table to use. Thus we will never be called. */ | |
482 | gdb_assert_not_reached ("debug_sym_segments called"); | |
483 | } | |
484 | ||
485 | static void | |
486 | debug_sym_read_linetable (struct objfile *objfile) | |
487 | { | |
488 | const struct debug_sym_fns_data *debug_data = | |
489 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
490 | ||
491 | fprintf_filtered (gdb_stdlog, "sf->sym_read_linetable (%s)\n", | |
cc485e62 | 492 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
493 | |
494 | debug_data->real_sf->sym_read_linetable (objfile); | |
495 | } | |
496 | ||
497 | static bfd_byte * | |
498 | debug_sym_relocate (struct objfile *objfile, asection *sectp, bfd_byte *buf) | |
499 | { | |
500 | const struct debug_sym_fns_data *debug_data = | |
501 | objfile_data (objfile, symfile_debug_objfile_data_key); | |
502 | bfd_byte *retval; | |
503 | ||
504 | retval = debug_data->real_sf->sym_relocate (objfile, sectp, buf); | |
505 | ||
506 | fprintf_filtered (gdb_stdlog, | |
507 | "sf->sym_relocate (%s, %s, %s) = %s\n", | |
cc485e62 | 508 | objfile_debug_name (objfile), |
8fb8eb5c DE |
509 | host_address_to_string (sectp), |
510 | host_address_to_string (buf), | |
511 | host_address_to_string (retval)); | |
512 | ||
513 | return retval; | |
514 | } | |
515 | ||
516 | /* Template of debugging version of struct sym_fns. | |
517 | A copy is made, with sym_flavour updated, and a pointer to the real table | |
518 | installed in real_sf, and then a pointer to the copy is installed in the | |
519 | objfile. */ | |
520 | ||
521 | static const struct sym_fns debug_sym_fns = | |
522 | { | |
523 | debug_sym_new_init, | |
524 | debug_sym_init, | |
525 | debug_sym_read, | |
526 | debug_sym_read_psymbols, | |
527 | debug_sym_finish, | |
528 | debug_sym_offsets, | |
529 | debug_sym_segments, | |
530 | debug_sym_read_linetable, | |
531 | debug_sym_relocate, | |
532 | &debug_sym_probe_fns, | |
533 | &debug_sym_quick_functions | |
534 | }; | |
535 | \f | |
536 | /* Free the copy of sym_fns recorded in the registry. */ | |
537 | ||
538 | static void | |
539 | symfile_debug_free_objfile (struct objfile *objfile, void *datum) | |
540 | { | |
541 | xfree (datum); | |
542 | } | |
543 | ||
544 | /* Install the debugging versions of the symfile functions for OBJFILE. | |
545 | Do not call this if the debug versions are already installed. */ | |
546 | ||
547 | static void | |
548 | install_symfile_debug_logging (struct objfile *objfile) | |
549 | { | |
550 | const struct sym_fns *real_sf; | |
551 | struct debug_sym_fns_data *debug_data; | |
552 | ||
553 | /* The debug versions should not already be installed. */ | |
554 | gdb_assert (!symfile_debug_installed (objfile)); | |
555 | ||
556 | real_sf = objfile->sf; | |
557 | ||
558 | /* Alas we have to preserve NULL entries in REAL_SF. */ | |
41bf6aca | 559 | debug_data = XCNEW (struct debug_sym_fns_data); |
8fb8eb5c DE |
560 | |
561 | #define COPY_SF_PTR(from, to, name, func) \ | |
562 | do { \ | |
563 | if ((from)->name) \ | |
564 | (to)->debug_sf.name = func; \ | |
565 | } while (0) | |
566 | ||
567 | COPY_SF_PTR (real_sf, debug_data, sym_new_init, debug_sym_new_init); | |
568 | COPY_SF_PTR (real_sf, debug_data, sym_init, debug_sym_init); | |
569 | COPY_SF_PTR (real_sf, debug_data, sym_read, debug_sym_read); | |
570 | COPY_SF_PTR (real_sf, debug_data, sym_read_psymbols, | |
571 | debug_sym_read_psymbols); | |
572 | COPY_SF_PTR (real_sf, debug_data, sym_finish, debug_sym_finish); | |
573 | COPY_SF_PTR (real_sf, debug_data, sym_offsets, debug_sym_offsets); | |
574 | COPY_SF_PTR (real_sf, debug_data, sym_segments, debug_sym_segments); | |
575 | COPY_SF_PTR (real_sf, debug_data, sym_read_linetable, | |
576 | debug_sym_read_linetable); | |
577 | COPY_SF_PTR (real_sf, debug_data, sym_relocate, debug_sym_relocate); | |
578 | if (real_sf->sym_probe_fns) | |
579 | debug_data->debug_sf.sym_probe_fns = &debug_sym_probe_fns; | |
580 | debug_data->debug_sf.qf = &debug_sym_quick_functions; | |
581 | ||
582 | #undef COPY_SF_PTR | |
583 | ||
584 | debug_data->real_sf = real_sf; | |
585 | set_objfile_data (objfile, symfile_debug_objfile_data_key, debug_data); | |
586 | objfile->sf = &debug_data->debug_sf; | |
587 | } | |
588 | ||
589 | /* Uninstall the debugging versions of the symfile functions for OBJFILE. | |
590 | Do not call this if the debug versions are not installed. */ | |
591 | ||
592 | static void | |
593 | uninstall_symfile_debug_logging (struct objfile *objfile) | |
594 | { | |
595 | struct debug_sym_fns_data *debug_data; | |
596 | ||
597 | /* The debug versions should be currently installed. */ | |
598 | gdb_assert (symfile_debug_installed (objfile)); | |
599 | ||
600 | debug_data = objfile_data (objfile, symfile_debug_objfile_data_key); | |
601 | ||
602 | objfile->sf = debug_data->real_sf; | |
603 | xfree (debug_data); | |
604 | set_objfile_data (objfile, symfile_debug_objfile_data_key, NULL); | |
605 | } | |
606 | ||
607 | /* Call this function to set OBJFILE->SF. | |
608 | Do not set OBJFILE->SF directly. */ | |
609 | ||
610 | void | |
611 | objfile_set_sym_fns (struct objfile *objfile, const struct sym_fns *sf) | |
612 | { | |
613 | if (symfile_debug_installed (objfile)) | |
614 | { | |
615 | gdb_assert (debug_symfile); | |
616 | /* Remove the current one, and reinstall a new one later. */ | |
617 | uninstall_symfile_debug_logging (objfile); | |
618 | } | |
619 | ||
620 | /* Assume debug logging is disabled. */ | |
621 | objfile->sf = sf; | |
622 | ||
623 | /* Turn debug logging on if enabled. */ | |
624 | if (debug_symfile) | |
625 | install_symfile_debug_logging (objfile); | |
626 | } | |
627 | ||
628 | static void | |
629 | set_debug_symfile (char *args, int from_tty, struct cmd_list_element *c) | |
630 | { | |
631 | struct program_space *pspace; | |
632 | struct objfile *objfile; | |
633 | ||
634 | ALL_PSPACES (pspace) | |
635 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
636 | { | |
637 | if (debug_symfile) | |
638 | { | |
639 | if (!symfile_debug_installed (objfile)) | |
640 | install_symfile_debug_logging (objfile); | |
641 | } | |
642 | else | |
643 | { | |
644 | if (symfile_debug_installed (objfile)) | |
645 | uninstall_symfile_debug_logging (objfile); | |
646 | } | |
647 | } | |
648 | } | |
649 | ||
650 | static void | |
651 | show_debug_symfile (struct ui_file *file, int from_tty, | |
652 | struct cmd_list_element *c, const char *value) | |
653 | { | |
654 | fprintf_filtered (file, _("Symfile debugging is %s.\n"), value); | |
655 | } | |
656 | ||
657 | initialize_file_ftype _initialize_symfile_debug; | |
658 | ||
659 | void | |
660 | _initialize_symfile_debug (void) | |
661 | { | |
662 | symfile_debug_objfile_data_key | |
663 | = register_objfile_data_with_cleanup (NULL, symfile_debug_free_objfile); | |
664 | ||
665 | add_setshow_boolean_cmd ("symfile", no_class, &debug_symfile, _("\ | |
666 | Set debugging of the symfile functions."), _("\ | |
667 | Show debugging of the symfile functions."), _("\ | |
668 | When enabled, all calls to the symfile functions are logged."), | |
669 | set_debug_symfile, show_debug_symfile, | |
670 | &setdebuglist, &showdebuglist); | |
671 | ||
672 | /* Note: We don't need a new-objfile observer because debug logging | |
673 | will be installed when objfile init'n calls objfile_set_sym_fns. */ | |
674 | } |