| 1 | /* Generic static probe support for GDB. |
| 2 | |
| 3 | Copyright (C) 2012-2013 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "probe.h" |
| 22 | #include "command.h" |
| 23 | #include "cli/cli-cmds.h" |
| 24 | #include "cli/cli-utils.h" |
| 25 | #include "objfiles.h" |
| 26 | #include "symtab.h" |
| 27 | #include "progspace.h" |
| 28 | #include "filenames.h" |
| 29 | #include "exceptions.h" |
| 30 | #include "linespec.h" |
| 31 | #include "gdb_regex.h" |
| 32 | #include "frame.h" |
| 33 | #include "arch-utils.h" |
| 34 | #include <ctype.h> |
| 35 | |
| 36 | \f |
| 37 | |
| 38 | /* See definition in probe.h. */ |
| 39 | |
| 40 | struct symtabs_and_lines |
| 41 | parse_probes (char **argptr, struct linespec_result *canonical) |
| 42 | { |
| 43 | char *arg_start, *arg_end, *arg; |
| 44 | char *objfile_namestr = NULL, *provider = NULL, *name, *p; |
| 45 | struct cleanup *cleanup; |
| 46 | struct symtabs_and_lines result; |
| 47 | struct objfile *objfile; |
| 48 | struct program_space *pspace; |
| 49 | const struct probe_ops *probe_ops; |
| 50 | const char *cs; |
| 51 | |
| 52 | result.sals = NULL; |
| 53 | result.nelts = 0; |
| 54 | |
| 55 | arg_start = *argptr; |
| 56 | |
| 57 | cs = *argptr; |
| 58 | probe_ops = probe_linespec_to_ops (&cs); |
| 59 | gdb_assert (probe_ops != NULL); |
| 60 | |
| 61 | arg = (char *) cs; |
| 62 | arg = skip_spaces (arg); |
| 63 | if (!*arg) |
| 64 | error (_("argument to `%s' missing"), arg_start); |
| 65 | |
| 66 | arg_end = skip_to_space (arg); |
| 67 | |
| 68 | /* We make a copy here so we can write over parts with impunity. */ |
| 69 | arg = savestring (arg, arg_end - arg); |
| 70 | cleanup = make_cleanup (xfree, arg); |
| 71 | |
| 72 | /* Extract each word from the argument, separated by ":"s. */ |
| 73 | p = strchr (arg, ':'); |
| 74 | if (p == NULL) |
| 75 | { |
| 76 | /* This is `-p name'. */ |
| 77 | name = arg; |
| 78 | } |
| 79 | else |
| 80 | { |
| 81 | char *hold = p + 1; |
| 82 | |
| 83 | *p = '\0'; |
| 84 | p = strchr (hold, ':'); |
| 85 | if (p == NULL) |
| 86 | { |
| 87 | /* This is `-p provider:name'. */ |
| 88 | provider = arg; |
| 89 | name = hold; |
| 90 | } |
| 91 | else |
| 92 | { |
| 93 | /* This is `-p objfile:provider:name'. */ |
| 94 | *p = '\0'; |
| 95 | objfile_namestr = arg; |
| 96 | provider = hold; |
| 97 | name = p + 1; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | if (*name == '\0') |
| 102 | error (_("no probe name specified")); |
| 103 | if (provider && *provider == '\0') |
| 104 | error (_("invalid provider name")); |
| 105 | if (objfile_namestr && *objfile_namestr == '\0') |
| 106 | error (_("invalid objfile name")); |
| 107 | |
| 108 | ALL_PSPACES (pspace) |
| 109 | ALL_PSPACE_OBJFILES (pspace, objfile) |
| 110 | { |
| 111 | VEC (probe_p) *probes; |
| 112 | struct probe *probe; |
| 113 | int ix; |
| 114 | |
| 115 | if (!objfile->sf || !objfile->sf->sym_probe_fns) |
| 116 | continue; |
| 117 | |
| 118 | if (objfile_namestr |
| 119 | && FILENAME_CMP (objfile_name (objfile), objfile_namestr) != 0 |
| 120 | && FILENAME_CMP (lbasename (objfile_name (objfile)), |
| 121 | objfile_namestr) != 0) |
| 122 | continue; |
| 123 | |
| 124 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); |
| 125 | |
| 126 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) |
| 127 | { |
| 128 | struct symtab_and_line *sal; |
| 129 | |
| 130 | if (probe_ops != &probe_ops_any && probe->pops != probe_ops) |
| 131 | continue; |
| 132 | |
| 133 | if (provider && strcmp (probe->provider, provider) != 0) |
| 134 | continue; |
| 135 | |
| 136 | if (strcmp (probe->name, name) != 0) |
| 137 | continue; |
| 138 | |
| 139 | ++result.nelts; |
| 140 | result.sals = xrealloc (result.sals, |
| 141 | result.nelts |
| 142 | * sizeof (struct symtab_and_line)); |
| 143 | sal = &result.sals[result.nelts - 1]; |
| 144 | |
| 145 | init_sal (sal); |
| 146 | |
| 147 | sal->pc = probe->address; |
| 148 | sal->explicit_pc = 1; |
| 149 | sal->section = find_pc_overlay (sal->pc); |
| 150 | sal->pspace = pspace; |
| 151 | sal->probe = probe; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | if (result.nelts == 0) |
| 156 | { |
| 157 | throw_error (NOT_FOUND_ERROR, |
| 158 | _("No probe matching objfile=`%s', provider=`%s', name=`%s'"), |
| 159 | objfile_namestr ? objfile_namestr : _("<any>"), |
| 160 | provider ? provider : _("<any>"), |
| 161 | name); |
| 162 | } |
| 163 | |
| 164 | if (canonical) |
| 165 | { |
| 166 | canonical->special_display = 1; |
| 167 | canonical->pre_expanded = 1; |
| 168 | canonical->addr_string = savestring (*argptr, arg_end - *argptr); |
| 169 | } |
| 170 | |
| 171 | *argptr = arg_end; |
| 172 | do_cleanups (cleanup); |
| 173 | |
| 174 | return result; |
| 175 | } |
| 176 | |
| 177 | /* See definition in probe.h. */ |
| 178 | |
| 179 | VEC (probe_p) * |
| 180 | find_probes_in_objfile (struct objfile *objfile, const char *provider, |
| 181 | const char *name) |
| 182 | { |
| 183 | VEC (probe_p) *probes, *result = NULL; |
| 184 | int ix; |
| 185 | struct probe *probe; |
| 186 | |
| 187 | if (!objfile->sf || !objfile->sf->sym_probe_fns) |
| 188 | return NULL; |
| 189 | |
| 190 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); |
| 191 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) |
| 192 | { |
| 193 | if (strcmp (probe->provider, provider) != 0) |
| 194 | continue; |
| 195 | |
| 196 | if (strcmp (probe->name, name) != 0) |
| 197 | continue; |
| 198 | |
| 199 | VEC_safe_push (probe_p, result, probe); |
| 200 | } |
| 201 | |
| 202 | return result; |
| 203 | } |
| 204 | |
| 205 | /* See definition in probe.h. */ |
| 206 | |
| 207 | struct probe * |
| 208 | find_probe_by_pc (CORE_ADDR pc) |
| 209 | { |
| 210 | struct objfile *objfile; |
| 211 | |
| 212 | ALL_OBJFILES (objfile) |
| 213 | { |
| 214 | VEC (probe_p) *probes; |
| 215 | int ix; |
| 216 | struct probe *probe; |
| 217 | |
| 218 | if (!objfile->sf || !objfile->sf->sym_probe_fns) |
| 219 | continue; |
| 220 | |
| 221 | /* If this proves too inefficient, we can replace with a hash. */ |
| 222 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); |
| 223 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) |
| 224 | if (probe->address == pc) |
| 225 | return probe; |
| 226 | } |
| 227 | |
| 228 | return NULL; |
| 229 | } |
| 230 | |
| 231 | \f |
| 232 | |
| 233 | /* Make a vector of probes matching OBJNAME, PROVIDER, and PROBE_NAME. |
| 234 | If POPS is not NULL, only probes of this certain probe_ops will match. |
| 235 | Each argument is a regexp, or NULL, which matches anything. */ |
| 236 | |
| 237 | static VEC (probe_p) * |
| 238 | collect_probes (char *objname, char *provider, char *probe_name, |
| 239 | const struct probe_ops *pops) |
| 240 | { |
| 241 | struct objfile *objfile; |
| 242 | VEC (probe_p) *result = NULL; |
| 243 | struct cleanup *cleanup, *cleanup_temps; |
| 244 | regex_t obj_pat, prov_pat, probe_pat; |
| 245 | |
| 246 | cleanup = make_cleanup (VEC_cleanup (probe_p), &result); |
| 247 | |
| 248 | cleanup_temps = make_cleanup (null_cleanup, NULL); |
| 249 | if (provider != NULL) |
| 250 | compile_rx_or_error (&prov_pat, provider, _("Invalid provider regexp")); |
| 251 | if (probe_name != NULL) |
| 252 | compile_rx_or_error (&probe_pat, probe_name, _("Invalid probe regexp")); |
| 253 | if (objname != NULL) |
| 254 | compile_rx_or_error (&obj_pat, objname, _("Invalid object file regexp")); |
| 255 | |
| 256 | ALL_OBJFILES (objfile) |
| 257 | { |
| 258 | VEC (probe_p) *probes; |
| 259 | struct probe *probe; |
| 260 | int ix; |
| 261 | |
| 262 | if (! objfile->sf || ! objfile->sf->sym_probe_fns) |
| 263 | continue; |
| 264 | |
| 265 | if (objname) |
| 266 | { |
| 267 | if (regexec (&obj_pat, objfile_name (objfile), 0, NULL, 0) != 0) |
| 268 | continue; |
| 269 | } |
| 270 | |
| 271 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); |
| 272 | |
| 273 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) |
| 274 | { |
| 275 | if (pops != NULL && probe->pops != pops) |
| 276 | continue; |
| 277 | |
| 278 | if (provider |
| 279 | && regexec (&prov_pat, probe->provider, 0, NULL, 0) != 0) |
| 280 | continue; |
| 281 | |
| 282 | if (probe_name |
| 283 | && regexec (&probe_pat, probe->name, 0, NULL, 0) != 0) |
| 284 | continue; |
| 285 | |
| 286 | VEC_safe_push (probe_p, result, probe); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | do_cleanups (cleanup_temps); |
| 291 | discard_cleanups (cleanup); |
| 292 | return result; |
| 293 | } |
| 294 | |
| 295 | /* A qsort comparison function for probe_p objects. */ |
| 296 | |
| 297 | static int |
| 298 | compare_probes (const void *a, const void *b) |
| 299 | { |
| 300 | const struct probe *pa = *((const struct probe **) a); |
| 301 | const struct probe *pb = *((const struct probe **) b); |
| 302 | int v; |
| 303 | |
| 304 | v = strcmp (pa->provider, pb->provider); |
| 305 | if (v) |
| 306 | return v; |
| 307 | |
| 308 | v = strcmp (pa->name, pb->name); |
| 309 | if (v) |
| 310 | return v; |
| 311 | |
| 312 | if (pa->address < pb->address) |
| 313 | return -1; |
| 314 | if (pa->address > pb->address) |
| 315 | return 1; |
| 316 | |
| 317 | return strcmp (objfile_name (pa->objfile), objfile_name (pb->objfile)); |
| 318 | } |
| 319 | |
| 320 | /* Helper function that generate entries in the ui_out table being |
| 321 | crafted by `info_probes_for_ops'. */ |
| 322 | |
| 323 | static void |
| 324 | gen_ui_out_table_header_info (VEC (probe_p) *probes, |
| 325 | const struct probe_ops *p) |
| 326 | { |
| 327 | /* `headings' refers to the names of the columns when printing `info |
| 328 | probes'. */ |
| 329 | VEC (info_probe_column_s) *headings = NULL; |
| 330 | struct cleanup *c; |
| 331 | info_probe_column_s *column; |
| 332 | size_t headings_size; |
| 333 | int ix; |
| 334 | |
| 335 | gdb_assert (p != NULL); |
| 336 | |
| 337 | if (p->gen_info_probes_table_header == NULL |
| 338 | && p->gen_info_probes_table_values == NULL) |
| 339 | return; |
| 340 | |
| 341 | gdb_assert (p->gen_info_probes_table_header != NULL |
| 342 | && p->gen_info_probes_table_values != NULL); |
| 343 | |
| 344 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); |
| 345 | p->gen_info_probes_table_header (&headings); |
| 346 | |
| 347 | headings_size = VEC_length (info_probe_column_s, headings); |
| 348 | |
| 349 | for (ix = 0; |
| 350 | VEC_iterate (info_probe_column_s, headings, ix, column); |
| 351 | ++ix) |
| 352 | { |
| 353 | struct probe *probe; |
| 354 | int jx; |
| 355 | size_t size_max = strlen (column->print_name); |
| 356 | |
| 357 | for (jx = 0; VEC_iterate (probe_p, probes, jx, probe); ++jx) |
| 358 | { |
| 359 | /* `probe_fields' refers to the values of each new field that this |
| 360 | probe will display. */ |
| 361 | VEC (const_char_ptr) *probe_fields = NULL; |
| 362 | struct cleanup *c2; |
| 363 | const char *val; |
| 364 | int kx; |
| 365 | |
| 366 | if (probe->pops != p) |
| 367 | continue; |
| 368 | |
| 369 | c2 = make_cleanup (VEC_cleanup (const_char_ptr), &probe_fields); |
| 370 | p->gen_info_probes_table_values (probe, &probe_fields); |
| 371 | |
| 372 | gdb_assert (VEC_length (const_char_ptr, probe_fields) |
| 373 | == headings_size); |
| 374 | |
| 375 | for (kx = 0; VEC_iterate (const_char_ptr, probe_fields, kx, val); |
| 376 | ++kx) |
| 377 | { |
| 378 | /* It is valid to have a NULL value here, which means that the |
| 379 | backend does not have something to write and this particular |
| 380 | field should be skipped. */ |
| 381 | if (val == NULL) |
| 382 | continue; |
| 383 | |
| 384 | size_max = max (strlen (val), size_max); |
| 385 | } |
| 386 | do_cleanups (c2); |
| 387 | } |
| 388 | |
| 389 | ui_out_table_header (current_uiout, size_max, ui_left, |
| 390 | column->field_name, column->print_name); |
| 391 | } |
| 392 | |
| 393 | do_cleanups (c); |
| 394 | } |
| 395 | |
| 396 | /* Helper function to print extra information about a probe and an objfile |
| 397 | represented by PROBE. */ |
| 398 | |
| 399 | static void |
| 400 | print_ui_out_info (struct probe *probe) |
| 401 | { |
| 402 | int ix; |
| 403 | int j = 0; |
| 404 | /* `values' refers to the actual values of each new field in the output |
| 405 | of `info probe'. `headings' refers to the names of each new field. */ |
| 406 | VEC (const_char_ptr) *values = NULL; |
| 407 | VEC (info_probe_column_s) *headings = NULL; |
| 408 | info_probe_column_s *column; |
| 409 | struct cleanup *c; |
| 410 | |
| 411 | gdb_assert (probe != NULL); |
| 412 | gdb_assert (probe->pops != NULL); |
| 413 | |
| 414 | if (probe->pops->gen_info_probes_table_header == NULL |
| 415 | && probe->pops->gen_info_probes_table_values == NULL) |
| 416 | return; |
| 417 | |
| 418 | gdb_assert (probe->pops->gen_info_probes_table_header != NULL |
| 419 | && probe->pops->gen_info_probes_table_values != NULL); |
| 420 | |
| 421 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); |
| 422 | make_cleanup (VEC_cleanup (const_char_ptr), &values); |
| 423 | |
| 424 | probe->pops->gen_info_probes_table_header (&headings); |
| 425 | probe->pops->gen_info_probes_table_values (probe, &values); |
| 426 | |
| 427 | gdb_assert (VEC_length (info_probe_column_s, headings) |
| 428 | == VEC_length (const_char_ptr, values)); |
| 429 | |
| 430 | for (ix = 0; |
| 431 | VEC_iterate (info_probe_column_s, headings, ix, column); |
| 432 | ++ix) |
| 433 | { |
| 434 | const char *val = VEC_index (const_char_ptr, values, j++); |
| 435 | |
| 436 | if (val == NULL) |
| 437 | ui_out_field_skip (current_uiout, column->field_name); |
| 438 | else |
| 439 | ui_out_field_string (current_uiout, column->field_name, val); |
| 440 | } |
| 441 | |
| 442 | do_cleanups (c); |
| 443 | } |
| 444 | |
| 445 | /* Helper function that returns the number of extra fields which POPS will |
| 446 | need. */ |
| 447 | |
| 448 | static int |
| 449 | get_number_extra_fields (const struct probe_ops *pops) |
| 450 | { |
| 451 | VEC (info_probe_column_s) *headings = NULL; |
| 452 | struct cleanup *c; |
| 453 | int n; |
| 454 | |
| 455 | if (pops->gen_info_probes_table_header == NULL) |
| 456 | return 0; |
| 457 | |
| 458 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); |
| 459 | pops->gen_info_probes_table_header (&headings); |
| 460 | |
| 461 | n = VEC_length (info_probe_column_s, headings); |
| 462 | |
| 463 | do_cleanups (c); |
| 464 | |
| 465 | return n; |
| 466 | } |
| 467 | |
| 468 | /* See comment in probe.h. */ |
| 469 | |
| 470 | void |
| 471 | info_probes_for_ops (char *arg, int from_tty, const struct probe_ops *pops) |
| 472 | { |
| 473 | char *provider, *probe_name = NULL, *objname = NULL; |
| 474 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
| 475 | VEC (probe_p) *probes; |
| 476 | int i, any_found; |
| 477 | int ui_out_extra_fields = 0; |
| 478 | size_t size_addr; |
| 479 | size_t size_name = strlen ("Name"); |
| 480 | size_t size_objname = strlen ("Object"); |
| 481 | size_t size_provider = strlen ("Provider"); |
| 482 | struct probe *probe; |
| 483 | struct gdbarch *gdbarch = get_current_arch (); |
| 484 | |
| 485 | /* Do we have a `provider:probe:objfile' style of linespec? */ |
| 486 | provider = extract_arg (&arg); |
| 487 | if (provider) |
| 488 | { |
| 489 | make_cleanup (xfree, provider); |
| 490 | |
| 491 | probe_name = extract_arg (&arg); |
| 492 | if (probe_name) |
| 493 | { |
| 494 | make_cleanup (xfree, probe_name); |
| 495 | |
| 496 | objname = extract_arg (&arg); |
| 497 | if (objname) |
| 498 | make_cleanup (xfree, objname); |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | if (pops == NULL) |
| 503 | { |
| 504 | const struct probe_ops *po; |
| 505 | int ix; |
| 506 | |
| 507 | /* If the probe_ops is NULL, it means the user has requested a "simple" |
| 508 | `info probes', i.e., she wants to print all information about all |
| 509 | probes. For that, we have to identify how many extra fields we will |
| 510 | need to add in the ui_out table. |
| 511 | |
| 512 | To do that, we iterate over all probe_ops, querying each one about |
| 513 | its extra fields, and incrementing `ui_out_extra_fields' to reflect |
| 514 | that number. */ |
| 515 | |
| 516 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix) |
| 517 | ui_out_extra_fields += get_number_extra_fields (po); |
| 518 | } |
| 519 | else |
| 520 | ui_out_extra_fields = get_number_extra_fields (pops); |
| 521 | |
| 522 | probes = collect_probes (objname, provider, probe_name, pops); |
| 523 | make_cleanup (VEC_cleanup (probe_p), &probes); |
| 524 | make_cleanup_ui_out_table_begin_end (current_uiout, |
| 525 | 4 + ui_out_extra_fields, |
| 526 | VEC_length (probe_p, probes), |
| 527 | "StaticProbes"); |
| 528 | |
| 529 | if (!VEC_empty (probe_p, probes)) |
| 530 | qsort (VEC_address (probe_p, probes), VEC_length (probe_p, probes), |
| 531 | sizeof (probe_p), compare_probes); |
| 532 | |
| 533 | /* What's the size of an address in our architecture? */ |
| 534 | size_addr = gdbarch_addr_bit (gdbarch) == 64 ? 18 : 10; |
| 535 | |
| 536 | /* Determining the maximum size of each field (`provider', `name' and |
| 537 | `objname'). */ |
| 538 | for (i = 0; VEC_iterate (probe_p, probes, i, probe); ++i) |
| 539 | { |
| 540 | size_name = max (strlen (probe->name), size_name); |
| 541 | size_provider = max (strlen (probe->provider), size_provider); |
| 542 | size_objname = max (strlen (objfile_name (probe->objfile)), size_objname); |
| 543 | } |
| 544 | |
| 545 | ui_out_table_header (current_uiout, size_provider, ui_left, "provider", |
| 546 | _("Provider")); |
| 547 | ui_out_table_header (current_uiout, size_name, ui_left, "name", _("Name")); |
| 548 | ui_out_table_header (current_uiout, size_addr, ui_left, "addr", _("Where")); |
| 549 | |
| 550 | if (pops == NULL) |
| 551 | { |
| 552 | const struct probe_ops *po; |
| 553 | int ix; |
| 554 | |
| 555 | /* We have to generate the table header for each new probe type that we |
| 556 | will print. */ |
| 557 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix) |
| 558 | gen_ui_out_table_header_info (probes, po); |
| 559 | } |
| 560 | else |
| 561 | gen_ui_out_table_header_info (probes, pops); |
| 562 | |
| 563 | ui_out_table_header (current_uiout, size_objname, ui_left, "object", |
| 564 | _("Object")); |
| 565 | ui_out_table_body (current_uiout); |
| 566 | |
| 567 | for (i = 0; VEC_iterate (probe_p, probes, i, probe); ++i) |
| 568 | { |
| 569 | struct cleanup *inner; |
| 570 | |
| 571 | inner = make_cleanup_ui_out_tuple_begin_end (current_uiout, "probe"); |
| 572 | |
| 573 | ui_out_field_string (current_uiout, "provider", probe->provider); |
| 574 | ui_out_field_string (current_uiout, "name", probe->name); |
| 575 | ui_out_field_core_addr (current_uiout, "addr", |
| 576 | get_objfile_arch (probe->objfile), |
| 577 | probe->address); |
| 578 | |
| 579 | if (pops == NULL) |
| 580 | { |
| 581 | const struct probe_ops *po; |
| 582 | int ix; |
| 583 | |
| 584 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); |
| 585 | ++ix) |
| 586 | if (probe->pops == po) |
| 587 | print_ui_out_info (probe); |
| 588 | } |
| 589 | else |
| 590 | print_ui_out_info (probe); |
| 591 | |
| 592 | ui_out_field_string (current_uiout, "object", |
| 593 | objfile_name (probe->objfile)); |
| 594 | ui_out_text (current_uiout, "\n"); |
| 595 | |
| 596 | do_cleanups (inner); |
| 597 | } |
| 598 | |
| 599 | any_found = !VEC_empty (probe_p, probes); |
| 600 | do_cleanups (cleanup); |
| 601 | |
| 602 | if (!any_found) |
| 603 | ui_out_message (current_uiout, 0, _("No probes matched.\n")); |
| 604 | } |
| 605 | |
| 606 | /* Implementation of the `info probes' command. */ |
| 607 | |
| 608 | static void |
| 609 | info_probes_command (char *arg, int from_tty) |
| 610 | { |
| 611 | info_probes_for_ops (arg, from_tty, NULL); |
| 612 | } |
| 613 | |
| 614 | /* See comments in probe.h. */ |
| 615 | |
| 616 | unsigned |
| 617 | get_probe_argument_count (struct probe *probe) |
| 618 | { |
| 619 | const struct sym_probe_fns *probe_fns; |
| 620 | |
| 621 | gdb_assert (probe->objfile != NULL); |
| 622 | gdb_assert (probe->objfile->sf != NULL); |
| 623 | |
| 624 | probe_fns = probe->objfile->sf->sym_probe_fns; |
| 625 | |
| 626 | gdb_assert (probe_fns != NULL); |
| 627 | |
| 628 | return probe_fns->sym_get_probe_argument_count (probe); |
| 629 | } |
| 630 | |
| 631 | /* See comments in probe.h. */ |
| 632 | |
| 633 | int |
| 634 | can_evaluate_probe_arguments (struct probe *probe) |
| 635 | { |
| 636 | const struct sym_probe_fns *probe_fns; |
| 637 | |
| 638 | gdb_assert (probe->objfile != NULL); |
| 639 | gdb_assert (probe->objfile->sf != NULL); |
| 640 | |
| 641 | probe_fns = probe->objfile->sf->sym_probe_fns; |
| 642 | |
| 643 | gdb_assert (probe_fns != NULL); |
| 644 | |
| 645 | return probe_fns->can_evaluate_probe_arguments (probe); |
| 646 | } |
| 647 | |
| 648 | /* See comments in probe.h. */ |
| 649 | |
| 650 | struct value * |
| 651 | evaluate_probe_argument (struct probe *probe, unsigned n) |
| 652 | { |
| 653 | const struct sym_probe_fns *probe_fns; |
| 654 | |
| 655 | gdb_assert (probe->objfile != NULL); |
| 656 | gdb_assert (probe->objfile->sf != NULL); |
| 657 | |
| 658 | probe_fns = probe->objfile->sf->sym_probe_fns; |
| 659 | |
| 660 | gdb_assert (probe_fns != NULL); |
| 661 | |
| 662 | return probe_fns->sym_evaluate_probe_argument (probe, n); |
| 663 | } |
| 664 | |
| 665 | /* See comments in probe.h. */ |
| 666 | |
| 667 | struct value * |
| 668 | probe_safe_evaluate_at_pc (struct frame_info *frame, unsigned n) |
| 669 | { |
| 670 | struct probe *probe; |
| 671 | unsigned n_args; |
| 672 | |
| 673 | probe = find_probe_by_pc (get_frame_pc (frame)); |
| 674 | if (!probe) |
| 675 | return NULL; |
| 676 | |
| 677 | n_args = get_probe_argument_count (probe); |
| 678 | if (n >= n_args) |
| 679 | return NULL; |
| 680 | |
| 681 | return evaluate_probe_argument (probe, n); |
| 682 | } |
| 683 | |
| 684 | /* See comment in probe.h. */ |
| 685 | |
| 686 | const struct probe_ops * |
| 687 | probe_linespec_to_ops (const char **linespecp) |
| 688 | { |
| 689 | int ix; |
| 690 | const struct probe_ops *probe_ops; |
| 691 | |
| 692 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, probe_ops); ix++) |
| 693 | if (probe_ops->is_linespec (linespecp)) |
| 694 | return probe_ops; |
| 695 | |
| 696 | return NULL; |
| 697 | } |
| 698 | |
| 699 | /* See comment in probe.h. */ |
| 700 | |
| 701 | int |
| 702 | probe_is_linespec_by_keyword (const char **linespecp, const char *const *keywords) |
| 703 | { |
| 704 | const char *s = *linespecp; |
| 705 | const char *const *csp; |
| 706 | |
| 707 | for (csp = keywords; *csp; csp++) |
| 708 | { |
| 709 | const char *keyword = *csp; |
| 710 | size_t len = strlen (keyword); |
| 711 | |
| 712 | if (strncmp (s, keyword, len) == 0 && isspace (s[len])) |
| 713 | { |
| 714 | *linespecp += len + 1; |
| 715 | return 1; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | /* Implementation of `is_linespec' method for `struct probe_ops'. */ |
| 723 | |
| 724 | static int |
| 725 | probe_any_is_linespec (const char **linespecp) |
| 726 | { |
| 727 | static const char *const keywords[] = { "-p", "-probe", NULL }; |
| 728 | |
| 729 | return probe_is_linespec_by_keyword (linespecp, keywords); |
| 730 | } |
| 731 | |
| 732 | /* Dummy method used for `probe_ops_any'. */ |
| 733 | |
| 734 | static void |
| 735 | probe_any_get_probes (VEC (probe_p) **probesp, struct objfile *objfile) |
| 736 | { |
| 737 | /* No probes can be provided by this dummy backend. */ |
| 738 | } |
| 739 | |
| 740 | /* Operations associated with a generic probe. */ |
| 741 | |
| 742 | const struct probe_ops probe_ops_any = |
| 743 | { |
| 744 | probe_any_is_linespec, |
| 745 | probe_any_get_probes, |
| 746 | }; |
| 747 | |
| 748 | /* See comments in probe.h. */ |
| 749 | |
| 750 | struct cmd_list_element ** |
| 751 | info_probes_cmdlist_get (void) |
| 752 | { |
| 753 | static struct cmd_list_element *info_probes_cmdlist; |
| 754 | |
| 755 | if (info_probes_cmdlist == NULL) |
| 756 | add_prefix_cmd ("probes", class_info, info_probes_command, |
| 757 | _("\ |
| 758 | Show available static probes.\n\ |
| 759 | Usage: info probes [all|TYPE [ARGS]]\n\ |
| 760 | TYPE specifies the type of the probe, and can be one of the following:\n\ |
| 761 | - stap\n\ |
| 762 | If you specify TYPE, there may be additional arguments needed by the\n\ |
| 763 | subcommand.\n\ |
| 764 | If you do not specify any argument, or specify `all', then the command\n\ |
| 765 | will show information about all types of probes."), |
| 766 | &info_probes_cmdlist, "info probes ", |
| 767 | 0/*allow-unknown*/, &infolist); |
| 768 | |
| 769 | return &info_probes_cmdlist; |
| 770 | } |
| 771 | |
| 772 | VEC (probe_ops_cp) *all_probe_ops; |
| 773 | |
| 774 | void _initialize_probe (void); |
| 775 | |
| 776 | void |
| 777 | _initialize_probe (void) |
| 778 | { |
| 779 | VEC_safe_push (probe_ops_cp, all_probe_ops, &probe_ops_any); |
| 780 | |
| 781 | add_cmd ("all", class_info, info_probes_command, |
| 782 | _("\ |
| 783 | Show information about all type of probes."), |
| 784 | info_probes_cmdlist_get ()); |
| 785 | } |