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8fb8eb5c DE |
1 | /* Debug logging for the symbol file functions for the GNU debugger, GDB. |
2 | ||
61baf725 | 3 | Copyright (C) 2013-2017 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 | { | |
19ba03f4 SM |
75 | const struct debug_sym_fns_data *debug_data |
76 | = ((const struct debug_sym_fns_data *) | |
77 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
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 SM |
91 | const struct debug_sym_fns_data *debug_data |
92 | = ((const struct debug_sym_fns_data *) | |
93 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
94 | struct symtab *retval; |
95 | ||
96 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (%s)\n", | |
cc485e62 | 97 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
98 | |
99 | retval = debug_data->real_sf->qf->find_last_source_symtab (objfile); | |
100 | ||
101 | fprintf_filtered (gdb_stdlog, "qf->find_last_source_symtab (...) = %s\n", | |
102 | retval ? debug_symtab_name (retval) : "NULL"); | |
103 | ||
104 | return retval; | |
105 | } | |
106 | ||
107 | static void | |
108 | debug_qf_forget_cached_source_info (struct objfile *objfile) | |
109 | { | |
19ba03f4 SM |
110 | const struct debug_sym_fns_data *debug_data |
111 | = ((const struct debug_sym_fns_data *) | |
112 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
113 | |
114 | fprintf_filtered (gdb_stdlog, "qf->forget_cached_source_info (%s)\n", | |
cc485e62 | 115 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
116 | |
117 | debug_data->real_sf->qf->forget_cached_source_info (objfile); | |
118 | } | |
119 | ||
120 | static int | |
121 | debug_qf_map_symtabs_matching_filename (struct objfile *objfile, | |
122 | const char *name, | |
123 | const char *real_path, | |
124 | int (*callback) (struct symtab *, | |
125 | void *), | |
126 | void *data) | |
127 | { | |
19ba03f4 SM |
128 | const struct debug_sym_fns_data *debug_data |
129 | = ((const struct debug_sym_fns_data *) | |
130 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
131 | int retval; |
132 | ||
133 | fprintf_filtered (gdb_stdlog, | |
134 | "qf->map_symtabs_matching_filename (%s, \"%s\", \"%s\", %s, %s)\n", | |
cc485e62 | 135 | objfile_debug_name (objfile), name, |
8fb8eb5c DE |
136 | real_path ? real_path : NULL, |
137 | host_address_to_string (callback), | |
138 | host_address_to_string (data)); | |
139 | ||
140 | retval = debug_data->real_sf->qf->map_symtabs_matching_filename | |
141 | (objfile, name, real_path, callback, data); | |
142 | ||
143 | fprintf_filtered (gdb_stdlog, | |
144 | "qf->map_symtabs_matching_filename (...) = %d\n", | |
145 | retval); | |
146 | ||
147 | return retval; | |
148 | } | |
149 | ||
43f3e411 | 150 | static struct compunit_symtab * |
8fb8eb5c DE |
151 | debug_qf_lookup_symbol (struct objfile *objfile, int kind, const char *name, |
152 | domain_enum domain) | |
153 | { | |
19ba03f4 SM |
154 | const struct debug_sym_fns_data *debug_data |
155 | = ((const struct debug_sym_fns_data *) | |
156 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
43f3e411 | 157 | struct compunit_symtab *retval; |
8fb8eb5c DE |
158 | |
159 | fprintf_filtered (gdb_stdlog, | |
160 | "qf->lookup_symbol (%s, %d, \"%s\", %s)\n", | |
cc485e62 | 161 | objfile_debug_name (objfile), kind, name, |
8fb8eb5c DE |
162 | domain_name (domain)); |
163 | ||
164 | retval = debug_data->real_sf->qf->lookup_symbol (objfile, kind, name, | |
165 | domain); | |
166 | ||
167 | fprintf_filtered (gdb_stdlog, "qf->lookup_symbol (...) = %s\n", | |
43f3e411 DE |
168 | retval |
169 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
170 | : "NULL"); | |
8fb8eb5c DE |
171 | |
172 | return retval; | |
173 | } | |
174 | ||
175 | static void | |
176 | debug_qf_print_stats (struct objfile *objfile) | |
177 | { | |
19ba03f4 SM |
178 | const struct debug_sym_fns_data *debug_data |
179 | = ((const struct debug_sym_fns_data *) | |
180 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
181 | |
182 | fprintf_filtered (gdb_stdlog, "qf->print_stats (%s)\n", | |
cc485e62 | 183 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
184 | |
185 | debug_data->real_sf->qf->print_stats (objfile); | |
186 | } | |
187 | ||
188 | static void | |
189 | debug_qf_dump (struct objfile *objfile) | |
190 | { | |
19ba03f4 SM |
191 | const struct debug_sym_fns_data *debug_data |
192 | = ((const struct debug_sym_fns_data *) | |
193 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
194 | |
195 | fprintf_filtered (gdb_stdlog, "qf->dump (%s)\n", | |
cc485e62 | 196 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
197 | |
198 | debug_data->real_sf->qf->dump (objfile); | |
199 | } | |
200 | ||
201 | static void | |
202 | debug_qf_relocate (struct objfile *objfile, | |
203 | const struct section_offsets *new_offsets, | |
204 | const struct section_offsets *delta) | |
205 | { | |
19ba03f4 SM |
206 | const struct debug_sym_fns_data *debug_data |
207 | = ((const struct debug_sym_fns_data *) | |
208 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
209 | |
210 | fprintf_filtered (gdb_stdlog, "qf->relocate (%s, %s, %s)\n", | |
cc485e62 | 211 | objfile_debug_name (objfile), |
8fb8eb5c DE |
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 | { | |
19ba03f4 SM |
222 | const struct debug_sym_fns_data *debug_data |
223 | = ((const struct debug_sym_fns_data *) | |
224 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
225 | |
226 | fprintf_filtered (gdb_stdlog, | |
227 | "qf->expand_symtabs_for_function (%s, \"%s\")\n", | |
cc485e62 | 228 | objfile_debug_name (objfile), func_name); |
8fb8eb5c DE |
229 | |
230 | debug_data->real_sf->qf->expand_symtabs_for_function (objfile, func_name); | |
231 | } | |
232 | ||
233 | static void | |
234 | debug_qf_expand_all_symtabs (struct objfile *objfile) | |
235 | { | |
19ba03f4 SM |
236 | const struct debug_sym_fns_data *debug_data |
237 | = ((const struct debug_sym_fns_data *) | |
238 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
239 | |
240 | fprintf_filtered (gdb_stdlog, "qf->expand_all_symtabs (%s)\n", | |
cc485e62 | 241 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
242 | |
243 | debug_data->real_sf->qf->expand_all_symtabs (objfile); | |
244 | } | |
245 | ||
246 | static void | |
247 | debug_qf_expand_symtabs_with_fullname (struct objfile *objfile, | |
248 | const char *fullname) | |
249 | { | |
19ba03f4 SM |
250 | const struct debug_sym_fns_data *debug_data |
251 | = ((const struct debug_sym_fns_data *) | |
252 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
253 | |
254 | fprintf_filtered (gdb_stdlog, | |
255 | "qf->expand_symtabs_with_fullname (%s, \"%s\")\n", | |
cc485e62 | 256 | objfile_debug_name (objfile), fullname); |
8fb8eb5c DE |
257 | |
258 | debug_data->real_sf->qf->expand_symtabs_with_fullname (objfile, fullname); | |
259 | } | |
260 | ||
261 | static void | |
262 | debug_qf_map_matching_symbols (struct objfile *objfile, | |
fe978cb0 | 263 | const char *name, domain_enum domain, |
8fb8eb5c DE |
264 | int global, |
265 | int (*callback) (struct block *, | |
266 | struct symbol *, void *), | |
267 | void *data, | |
268 | symbol_compare_ftype *match, | |
269 | symbol_compare_ftype *ordered_compare) | |
270 | { | |
19ba03f4 SM |
271 | const struct debug_sym_fns_data *debug_data |
272 | = ((const struct debug_sym_fns_data *) | |
273 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
274 | |
275 | fprintf_filtered (gdb_stdlog, | |
276 | "qf->map_matching_symbols (%s, \"%s\", %s, %d, %s, %s, %s, %s)\n", | |
cc485e62 | 277 | objfile_debug_name (objfile), name, |
fe978cb0 | 278 | domain_name (domain), global, |
8fb8eb5c DE |
279 | host_address_to_string (callback), |
280 | host_address_to_string (data), | |
281 | host_address_to_string (match), | |
282 | host_address_to_string (ordered_compare)); | |
283 | ||
284 | debug_data->real_sf->qf->map_matching_symbols (objfile, name, | |
fe978cb0 | 285 | domain, global, |
8fb8eb5c DE |
286 | callback, data, |
287 | match, | |
288 | ordered_compare); | |
289 | } | |
290 | ||
291 | static void | |
e86b67d3 JB |
292 | debug_qf_expand_symtabs_matching |
293 | (struct objfile *objfile, | |
294 | expand_symtabs_file_matcher_ftype *file_matcher, | |
295 | expand_symtabs_symbol_matcher_ftype *symbol_matcher, | |
276d885b | 296 | expand_symtabs_exp_notify_ftype *expansion_notify, |
e86b67d3 | 297 | enum search_domain kind, void *data) |
8fb8eb5c | 298 | { |
19ba03f4 SM |
299 | const struct debug_sym_fns_data *debug_data |
300 | = ((const struct debug_sym_fns_data *) | |
301 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
302 | |
303 | fprintf_filtered (gdb_stdlog, | |
276d885b | 304 | "qf->expand_symtabs_matching (%s, %s, %s, %s, %s, %s)\n", |
cc485e62 | 305 | objfile_debug_name (objfile), |
8fb8eb5c | 306 | host_address_to_string (file_matcher), |
3f03e7b1 | 307 | host_address_to_string (symbol_matcher), |
276d885b | 308 | host_address_to_string (expansion_notify), |
8fb8eb5c DE |
309 | search_domain_name (kind), |
310 | host_address_to_string (data)); | |
311 | ||
312 | debug_data->real_sf->qf->expand_symtabs_matching (objfile, | |
313 | file_matcher, | |
3f03e7b1 | 314 | symbol_matcher, |
276d885b | 315 | expansion_notify, |
8fb8eb5c DE |
316 | kind, data); |
317 | } | |
318 | ||
43f3e411 DE |
319 | static struct compunit_symtab * |
320 | debug_qf_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
321 | struct bound_minimal_symbol msymbol, | |
322 | CORE_ADDR pc, | |
323 | struct obj_section *section, | |
324 | int warn_if_readin) | |
8fb8eb5c | 325 | { |
19ba03f4 SM |
326 | const struct debug_sym_fns_data *debug_data |
327 | = ((const struct debug_sym_fns_data *) | |
328 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
43f3e411 | 329 | struct compunit_symtab *retval; |
8fb8eb5c DE |
330 | |
331 | fprintf_filtered (gdb_stdlog, | |
43f3e411 | 332 | "qf->find_pc_sect_compunit_symtab (%s, %s, %s, %s, %d)\n", |
cc485e62 | 333 | objfile_debug_name (objfile), |
77e371c0 | 334 | host_address_to_string (msymbol.minsym), |
8fb8eb5c DE |
335 | hex_string (pc), |
336 | host_address_to_string (section), | |
337 | warn_if_readin); | |
338 | ||
43f3e411 DE |
339 | retval |
340 | = debug_data->real_sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, | |
341 | pc, section, | |
342 | warn_if_readin); | |
8fb8eb5c | 343 | |
43f3e411 DE |
344 | fprintf_filtered (gdb_stdlog, |
345 | "qf->find_pc_sect_compunit_symtab (...) = %s\n", | |
346 | retval | |
347 | ? debug_symtab_name (compunit_primary_filetab (retval)) | |
348 | : "NULL"); | |
8fb8eb5c DE |
349 | |
350 | return retval; | |
351 | } | |
352 | ||
353 | static void | |
354 | debug_qf_map_symbol_filenames (struct objfile *objfile, | |
355 | symbol_filename_ftype *fun, void *data, | |
356 | int need_fullname) | |
357 | { | |
19ba03f4 SM |
358 | const struct debug_sym_fns_data *debug_data |
359 | = ((const struct debug_sym_fns_data *) | |
360 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
361 | fprintf_filtered (gdb_stdlog, |
362 | "qf->map_symbol_filenames (%s, %s, %s, %d)\n", | |
cc485e62 | 363 | objfile_debug_name (objfile), |
8fb8eb5c DE |
364 | host_address_to_string (fun), |
365 | host_address_to_string (data), | |
366 | need_fullname); | |
367 | ||
368 | debug_data->real_sf->qf->map_symbol_filenames (objfile, fun, data, | |
369 | need_fullname); | |
370 | } | |
371 | ||
372 | static const struct quick_symbol_functions debug_sym_quick_functions = | |
373 | { | |
374 | debug_qf_has_symbols, | |
375 | debug_qf_find_last_source_symtab, | |
376 | debug_qf_forget_cached_source_info, | |
377 | debug_qf_map_symtabs_matching_filename, | |
378 | debug_qf_lookup_symbol, | |
379 | debug_qf_print_stats, | |
380 | debug_qf_dump, | |
381 | debug_qf_relocate, | |
382 | debug_qf_expand_symtabs_for_function, | |
383 | debug_qf_expand_all_symtabs, | |
384 | debug_qf_expand_symtabs_with_fullname, | |
385 | debug_qf_map_matching_symbols, | |
386 | debug_qf_expand_symtabs_matching, | |
43f3e411 | 387 | debug_qf_find_pc_sect_compunit_symtab, |
8fb8eb5c DE |
388 | debug_qf_map_symbol_filenames |
389 | }; | |
390 | \f | |
391 | /* Debugging version of struct sym_probe_fns. */ | |
392 | ||
393 | static VEC (probe_p) * | |
394 | debug_sym_get_probes (struct objfile *objfile) | |
395 | { | |
19ba03f4 SM |
396 | const struct debug_sym_fns_data *debug_data |
397 | = ((const struct debug_sym_fns_data *) | |
398 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
399 | VEC (probe_p) *retval; |
400 | ||
401 | retval = debug_data->real_sf->sym_probe_fns->sym_get_probes (objfile); | |
402 | ||
403 | fprintf_filtered (gdb_stdlog, | |
404 | "probes->sym_get_probes (%s) = %s\n", | |
cc485e62 | 405 | objfile_debug_name (objfile), |
8fb8eb5c DE |
406 | host_address_to_string (retval)); |
407 | ||
408 | return retval; | |
409 | } | |
410 | ||
8fb8eb5c DE |
411 | static const struct sym_probe_fns debug_sym_probe_fns = |
412 | { | |
413 | debug_sym_get_probes, | |
8fb8eb5c DE |
414 | }; |
415 | \f | |
416 | /* Debugging version of struct sym_fns. */ | |
417 | ||
418 | static void | |
419 | debug_sym_new_init (struct objfile *objfile) | |
420 | { | |
19ba03f4 SM |
421 | const struct debug_sym_fns_data *debug_data |
422 | = ((const struct debug_sym_fns_data *) | |
423 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
424 | |
425 | fprintf_filtered (gdb_stdlog, "sf->sym_new_init (%s)\n", | |
cc485e62 | 426 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
427 | |
428 | debug_data->real_sf->sym_new_init (objfile); | |
429 | } | |
430 | ||
431 | static void | |
432 | debug_sym_init (struct objfile *objfile) | |
433 | { | |
19ba03f4 SM |
434 | const struct debug_sym_fns_data *debug_data |
435 | = ((const struct debug_sym_fns_data *) | |
436 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
437 | |
438 | fprintf_filtered (gdb_stdlog, "sf->sym_init (%s)\n", | |
cc485e62 | 439 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
440 | |
441 | debug_data->real_sf->sym_init (objfile); | |
442 | } | |
443 | ||
444 | static void | |
b15cc25c | 445 | debug_sym_read (struct objfile *objfile, symfile_add_flags symfile_flags) |
8fb8eb5c | 446 | { |
19ba03f4 SM |
447 | const struct debug_sym_fns_data *debug_data |
448 | = ((const struct debug_sym_fns_data *) | |
449 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
450 | |
451 | fprintf_filtered (gdb_stdlog, "sf->sym_read (%s, 0x%x)\n", | |
b15cc25c | 452 | objfile_debug_name (objfile), (unsigned) symfile_flags); |
8fb8eb5c DE |
453 | |
454 | debug_data->real_sf->sym_read (objfile, symfile_flags); | |
455 | } | |
456 | ||
457 | static void | |
458 | debug_sym_read_psymbols (struct objfile *objfile) | |
459 | { | |
19ba03f4 SM |
460 | const struct debug_sym_fns_data *debug_data |
461 | = ((const struct debug_sym_fns_data *) | |
462 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
463 | |
464 | fprintf_filtered (gdb_stdlog, "sf->sym_read_psymbols (%s)\n", | |
cc485e62 | 465 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
466 | |
467 | debug_data->real_sf->sym_read_psymbols (objfile); | |
468 | } | |
469 | ||
470 | static void | |
471 | debug_sym_finish (struct objfile *objfile) | |
472 | { | |
19ba03f4 SM |
473 | const struct debug_sym_fns_data *debug_data |
474 | = ((const struct debug_sym_fns_data *) | |
475 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
476 | |
477 | fprintf_filtered (gdb_stdlog, "sf->sym_finish (%s)\n", | |
cc485e62 | 478 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
479 | |
480 | debug_data->real_sf->sym_finish (objfile); | |
481 | } | |
482 | ||
483 | static void | |
484 | debug_sym_offsets (struct objfile *objfile, | |
485 | const struct section_addr_info *info) | |
486 | { | |
19ba03f4 SM |
487 | const struct debug_sym_fns_data *debug_data |
488 | = ((const struct debug_sym_fns_data *) | |
489 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
490 | |
491 | fprintf_filtered (gdb_stdlog, "sf->sym_offsets (%s, %s)\n", | |
cc485e62 | 492 | objfile_debug_name (objfile), |
8fb8eb5c DE |
493 | host_address_to_string (info)); |
494 | ||
495 | debug_data->real_sf->sym_offsets (objfile, info); | |
496 | } | |
497 | ||
498 | static struct symfile_segment_data * | |
499 | debug_sym_segments (bfd *abfd) | |
500 | { | |
501 | /* This API function is annoying, it doesn't take a "this" pointer. | |
502 | Fortunately it is only used in one place where we (re-)lookup the | |
503 | sym_fns table to use. Thus we will never be called. */ | |
504 | gdb_assert_not_reached ("debug_sym_segments called"); | |
505 | } | |
506 | ||
507 | static void | |
508 | debug_sym_read_linetable (struct objfile *objfile) | |
509 | { | |
19ba03f4 SM |
510 | const struct debug_sym_fns_data *debug_data |
511 | = ((const struct debug_sym_fns_data *) | |
512 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
513 | |
514 | fprintf_filtered (gdb_stdlog, "sf->sym_read_linetable (%s)\n", | |
cc485e62 | 515 | objfile_debug_name (objfile)); |
8fb8eb5c DE |
516 | |
517 | debug_data->real_sf->sym_read_linetable (objfile); | |
518 | } | |
519 | ||
520 | static bfd_byte * | |
521 | debug_sym_relocate (struct objfile *objfile, asection *sectp, bfd_byte *buf) | |
522 | { | |
19ba03f4 SM |
523 | const struct debug_sym_fns_data *debug_data |
524 | = ((const struct debug_sym_fns_data *) | |
525 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
526 | bfd_byte *retval; |
527 | ||
528 | retval = debug_data->real_sf->sym_relocate (objfile, sectp, buf); | |
529 | ||
530 | fprintf_filtered (gdb_stdlog, | |
531 | "sf->sym_relocate (%s, %s, %s) = %s\n", | |
cc485e62 | 532 | objfile_debug_name (objfile), |
8fb8eb5c DE |
533 | host_address_to_string (sectp), |
534 | host_address_to_string (buf), | |
535 | host_address_to_string (retval)); | |
536 | ||
537 | return retval; | |
538 | } | |
539 | ||
540 | /* Template of debugging version of struct sym_fns. | |
541 | A copy is made, with sym_flavour updated, and a pointer to the real table | |
542 | installed in real_sf, and then a pointer to the copy is installed in the | |
543 | objfile. */ | |
544 | ||
545 | static const struct sym_fns debug_sym_fns = | |
546 | { | |
547 | debug_sym_new_init, | |
548 | debug_sym_init, | |
549 | debug_sym_read, | |
550 | debug_sym_read_psymbols, | |
551 | debug_sym_finish, | |
552 | debug_sym_offsets, | |
553 | debug_sym_segments, | |
554 | debug_sym_read_linetable, | |
555 | debug_sym_relocate, | |
556 | &debug_sym_probe_fns, | |
557 | &debug_sym_quick_functions | |
558 | }; | |
559 | \f | |
560 | /* Free the copy of sym_fns recorded in the registry. */ | |
561 | ||
562 | static void | |
563 | symfile_debug_free_objfile (struct objfile *objfile, void *datum) | |
564 | { | |
565 | xfree (datum); | |
566 | } | |
567 | ||
568 | /* Install the debugging versions of the symfile functions for OBJFILE. | |
569 | Do not call this if the debug versions are already installed. */ | |
570 | ||
571 | static void | |
572 | install_symfile_debug_logging (struct objfile *objfile) | |
573 | { | |
574 | const struct sym_fns *real_sf; | |
575 | struct debug_sym_fns_data *debug_data; | |
576 | ||
577 | /* The debug versions should not already be installed. */ | |
578 | gdb_assert (!symfile_debug_installed (objfile)); | |
579 | ||
580 | real_sf = objfile->sf; | |
581 | ||
582 | /* Alas we have to preserve NULL entries in REAL_SF. */ | |
41bf6aca | 583 | debug_data = XCNEW (struct debug_sym_fns_data); |
8fb8eb5c DE |
584 | |
585 | #define COPY_SF_PTR(from, to, name, func) \ | |
586 | do { \ | |
587 | if ((from)->name) \ | |
588 | (to)->debug_sf.name = func; \ | |
589 | } while (0) | |
590 | ||
591 | COPY_SF_PTR (real_sf, debug_data, sym_new_init, debug_sym_new_init); | |
592 | COPY_SF_PTR (real_sf, debug_data, sym_init, debug_sym_init); | |
593 | COPY_SF_PTR (real_sf, debug_data, sym_read, debug_sym_read); | |
594 | COPY_SF_PTR (real_sf, debug_data, sym_read_psymbols, | |
595 | debug_sym_read_psymbols); | |
596 | COPY_SF_PTR (real_sf, debug_data, sym_finish, debug_sym_finish); | |
597 | COPY_SF_PTR (real_sf, debug_data, sym_offsets, debug_sym_offsets); | |
598 | COPY_SF_PTR (real_sf, debug_data, sym_segments, debug_sym_segments); | |
599 | COPY_SF_PTR (real_sf, debug_data, sym_read_linetable, | |
600 | debug_sym_read_linetable); | |
601 | COPY_SF_PTR (real_sf, debug_data, sym_relocate, debug_sym_relocate); | |
602 | if (real_sf->sym_probe_fns) | |
603 | debug_data->debug_sf.sym_probe_fns = &debug_sym_probe_fns; | |
604 | debug_data->debug_sf.qf = &debug_sym_quick_functions; | |
605 | ||
606 | #undef COPY_SF_PTR | |
607 | ||
608 | debug_data->real_sf = real_sf; | |
609 | set_objfile_data (objfile, symfile_debug_objfile_data_key, debug_data); | |
610 | objfile->sf = &debug_data->debug_sf; | |
611 | } | |
612 | ||
613 | /* Uninstall the debugging versions of the symfile functions for OBJFILE. | |
614 | Do not call this if the debug versions are not installed. */ | |
615 | ||
616 | static void | |
617 | uninstall_symfile_debug_logging (struct objfile *objfile) | |
618 | { | |
619 | struct debug_sym_fns_data *debug_data; | |
620 | ||
621 | /* The debug versions should be currently installed. */ | |
622 | gdb_assert (symfile_debug_installed (objfile)); | |
623 | ||
19ba03f4 SM |
624 | debug_data = ((struct debug_sym_fns_data *) |
625 | objfile_data (objfile, symfile_debug_objfile_data_key)); | |
8fb8eb5c DE |
626 | |
627 | objfile->sf = debug_data->real_sf; | |
628 | xfree (debug_data); | |
629 | set_objfile_data (objfile, symfile_debug_objfile_data_key, NULL); | |
630 | } | |
631 | ||
632 | /* Call this function to set OBJFILE->SF. | |
633 | Do not set OBJFILE->SF directly. */ | |
634 | ||
635 | void | |
636 | objfile_set_sym_fns (struct objfile *objfile, const struct sym_fns *sf) | |
637 | { | |
638 | if (symfile_debug_installed (objfile)) | |
639 | { | |
640 | gdb_assert (debug_symfile); | |
641 | /* Remove the current one, and reinstall a new one later. */ | |
642 | uninstall_symfile_debug_logging (objfile); | |
643 | } | |
644 | ||
645 | /* Assume debug logging is disabled. */ | |
646 | objfile->sf = sf; | |
647 | ||
648 | /* Turn debug logging on if enabled. */ | |
649 | if (debug_symfile) | |
650 | install_symfile_debug_logging (objfile); | |
651 | } | |
652 | ||
653 | static void | |
654 | set_debug_symfile (char *args, int from_tty, struct cmd_list_element *c) | |
655 | { | |
656 | struct program_space *pspace; | |
657 | struct objfile *objfile; | |
658 | ||
659 | ALL_PSPACES (pspace) | |
660 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
661 | { | |
662 | if (debug_symfile) | |
663 | { | |
664 | if (!symfile_debug_installed (objfile)) | |
665 | install_symfile_debug_logging (objfile); | |
666 | } | |
667 | else | |
668 | { | |
669 | if (symfile_debug_installed (objfile)) | |
670 | uninstall_symfile_debug_logging (objfile); | |
671 | } | |
672 | } | |
673 | } | |
674 | ||
675 | static void | |
676 | show_debug_symfile (struct ui_file *file, int from_tty, | |
677 | struct cmd_list_element *c, const char *value) | |
678 | { | |
679 | fprintf_filtered (file, _("Symfile debugging is %s.\n"), value); | |
680 | } | |
681 | ||
682 | initialize_file_ftype _initialize_symfile_debug; | |
683 | ||
684 | void | |
685 | _initialize_symfile_debug (void) | |
686 | { | |
687 | symfile_debug_objfile_data_key | |
688 | = register_objfile_data_with_cleanup (NULL, symfile_debug_free_objfile); | |
689 | ||
690 | add_setshow_boolean_cmd ("symfile", no_class, &debug_symfile, _("\ | |
691 | Set debugging of the symfile functions."), _("\ | |
692 | Show debugging of the symfile functions."), _("\ | |
693 | When enabled, all calls to the symfile functions are logged."), | |
694 | set_debug_symfile, show_debug_symfile, | |
695 | &setdebuglist, &showdebuglist); | |
696 | ||
697 | /* Note: We don't need a new-objfile observer because debug logging | |
698 | will be installed when objfile init'n calls objfile_set_sym_fns. */ | |
699 | } |