| 1 | /* Debug logging for the symbol file functions for the GNU debugger, GDB. |
| 2 | |
| 3 | Copyright (C) 2013-2015 Free Software Foundation, Inc. |
| 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 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", |
| 82 | objfile_debug_name (objfile), retval); |
| 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", |
| 95 | objfile_debug_name (objfile)); |
| 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", |
| 112 | objfile_debug_name (objfile)); |
| 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", |
| 131 | objfile_debug_name (objfile), name, |
| 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 | |
| 146 | static struct compunit_symtab * |
| 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); |
| 152 | struct compunit_symtab *retval; |
| 153 | |
| 154 | fprintf_filtered (gdb_stdlog, |
| 155 | "qf->lookup_symbol (%s, %d, \"%s\", %s)\n", |
| 156 | objfile_debug_name (objfile), kind, name, |
| 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", |
| 163 | retval |
| 164 | ? debug_symtab_name (compunit_primary_filetab (retval)) |
| 165 | : "NULL"); |
| 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", |
| 177 | objfile_debug_name (objfile)); |
| 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", |
| 189 | objfile_debug_name (objfile)); |
| 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", |
| 203 | objfile_debug_name (objfile), |
| 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", |
| 219 | objfile_debug_name (objfile), func_name); |
| 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", |
| 231 | objfile_debug_name (objfile)); |
| 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", |
| 245 | objfile_debug_name (objfile), fullname); |
| 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, |
| 252 | const char *name, domain_enum domain, |
| 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", |
| 265 | objfile_debug_name (objfile), name, |
| 266 | domain_name (domain), global, |
| 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, |
| 273 | domain, global, |
| 274 | callback, data, |
| 275 | match, |
| 276 | ordered_compare); |
| 277 | } |
| 278 | |
| 279 | static void |
| 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, |
| 284 | expand_symtabs_exp_notify_ftype *expansion_notify, |
| 285 | enum search_domain kind, void *data) |
| 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, |
| 291 | "qf->expand_symtabs_matching (%s, %s, %s, %s, %s, %s)\n", |
| 292 | objfile_debug_name (objfile), |
| 293 | host_address_to_string (file_matcher), |
| 294 | host_address_to_string (symbol_matcher), |
| 295 | host_address_to_string (expansion_notify), |
| 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, |
| 301 | symbol_matcher, |
| 302 | expansion_notify, |
| 303 | kind, data); |
| 304 | } |
| 305 | |
| 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) |
| 312 | { |
| 313 | const struct debug_sym_fns_data *debug_data = |
| 314 | objfile_data (objfile, symfile_debug_objfile_data_key); |
| 315 | struct compunit_symtab *retval; |
| 316 | |
| 317 | fprintf_filtered (gdb_stdlog, |
| 318 | "qf->find_pc_sect_compunit_symtab (%s, %s, %s, %s, %d)\n", |
| 319 | objfile_debug_name (objfile), |
| 320 | host_address_to_string (msymbol.minsym), |
| 321 | hex_string (pc), |
| 322 | host_address_to_string (section), |
| 323 | warn_if_readin); |
| 324 | |
| 325 | retval |
| 326 | = debug_data->real_sf->qf->find_pc_sect_compunit_symtab (objfile, msymbol, |
| 327 | pc, section, |
| 328 | warn_if_readin); |
| 329 | |
| 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"); |
| 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", |
| 348 | objfile_debug_name (objfile), |
| 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, |
| 372 | debug_qf_find_pc_sect_compunit_symtab, |
| 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", |
| 389 | objfile_debug_name (objfile), |
| 390 | host_address_to_string (retval)); |
| 391 | |
| 392 | return retval; |
| 393 | } |
| 394 | |
| 395 | static const struct sym_probe_fns debug_sym_probe_fns = |
| 396 | { |
| 397 | debug_sym_get_probes, |
| 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", |
| 409 | objfile_debug_name (objfile)); |
| 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", |
| 421 | objfile_debug_name (objfile)); |
| 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", |
| 433 | objfile_debug_name (objfile), symfile_flags); |
| 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", |
| 445 | objfile_debug_name (objfile)); |
| 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", |
| 457 | objfile_debug_name (objfile)); |
| 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", |
| 470 | objfile_debug_name (objfile), |
| 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", |
| 492 | objfile_debug_name (objfile)); |
| 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", |
| 508 | objfile_debug_name (objfile), |
| 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. */ |
| 559 | debug_data = XCNEW (struct debug_sym_fns_data); |
| 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 | } |