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55aa24fb SDJ |
1 | /* Generic static probe support for GDB. |
2 | ||
61baf725 | 3 | Copyright (C) 2012-2017 Free Software Foundation, Inc. |
55aa24fb SDJ |
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" | |
55aa24fb SDJ |
29 | #include "linespec.h" |
30 | #include "gdb_regex.h" | |
31 | #include "frame.h" | |
32 | #include "arch-utils.h" | |
03e98035 JM |
33 | #include "value.h" |
34 | #include "ax.h" | |
35 | #include "ax-gdb.h" | |
f00aae0f | 36 | #include "location.h" |
55aa24fb | 37 | #include <ctype.h> |
325fac50 | 38 | #include <algorithm> |
2d7cc5c7 | 39 | #include "common/gdb_optional.h" |
55aa24fb | 40 | |
c2f4122d PA |
41 | /* A helper for parse_probes that decodes a probe specification in |
42 | SEARCH_PSPACE. It appends matching SALs to RESULT. */ | |
43 | ||
44 | static void | |
45 | parse_probes_in_pspace (const struct probe_ops *probe_ops, | |
46 | struct program_space *search_pspace, | |
47 | const char *objfile_namestr, | |
48 | const char *provider, | |
49 | const char *name, | |
6c5b2ebe | 50 | std::vector<symtab_and_line> *result) |
c2f4122d PA |
51 | { |
52 | struct objfile *objfile; | |
53 | ||
54 | ALL_PSPACE_OBJFILES (search_pspace, objfile) | |
55 | { | |
c2f4122d PA |
56 | if (!objfile->sf || !objfile->sf->sym_probe_fns) |
57 | continue; | |
58 | ||
59 | if (objfile_namestr | |
60 | && FILENAME_CMP (objfile_name (objfile), objfile_namestr) != 0 | |
61 | && FILENAME_CMP (lbasename (objfile_name (objfile)), | |
62 | objfile_namestr) != 0) | |
63 | continue; | |
64 | ||
aaa63a31 SM |
65 | const std::vector<probe *> &probes |
66 | = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
c2f4122d | 67 | |
aaa63a31 | 68 | for (struct probe *probe : probes) |
c2f4122d | 69 | { |
c2f4122d PA |
70 | if (probe_ops != &probe_ops_any && probe->pops != probe_ops) |
71 | continue; | |
72 | ||
73 | if (provider && strcmp (probe->provider, provider) != 0) | |
74 | continue; | |
75 | ||
76 | if (strcmp (probe->name, name) != 0) | |
77 | continue; | |
78 | ||
6c5b2ebe | 79 | symtab_and_line sal; |
6c5b2ebe PA |
80 | sal.pc = get_probe_address (probe, objfile); |
81 | sal.explicit_pc = 1; | |
82 | sal.section = find_pc_overlay (sal.pc); | |
83 | sal.pspace = search_pspace; | |
84 | sal.probe = probe; | |
85 | sal.objfile = objfile; | |
c2f4122d | 86 | |
6c5b2ebe | 87 | result->push_back (std::move (sal)); |
c2f4122d PA |
88 | } |
89 | } | |
90 | } | |
91 | ||
55aa24fb SDJ |
92 | /* See definition in probe.h. */ |
93 | ||
6c5b2ebe | 94 | std::vector<symtab_and_line> |
f00aae0f | 95 | parse_probes (const struct event_location *location, |
c2f4122d | 96 | struct program_space *search_pspace, |
f00aae0f | 97 | struct linespec_result *canonical) |
55aa24fb | 98 | { |
f00aae0f | 99 | char *arg_end, *arg; |
4721dc18 | 100 | char *objfile_namestr = NULL, *provider = NULL, *name, *p; |
55aa24fb | 101 | struct cleanup *cleanup; |
55aa24fb | 102 | const struct probe_ops *probe_ops; |
f00aae0f | 103 | const char *arg_start, *cs; |
55aa24fb | 104 | |
5b56227b KS |
105 | gdb_assert (event_location_type (location) == PROBE_LOCATION); |
106 | arg_start = get_probe_location (location); | |
55aa24fb | 107 | |
f00aae0f | 108 | cs = arg_start; |
55aa24fb | 109 | probe_ops = probe_linespec_to_ops (&cs); |
1bff71c3 SDJ |
110 | if (probe_ops == NULL) |
111 | error (_("'%s' is not a probe linespec"), arg_start); | |
55aa24fb SDJ |
112 | |
113 | arg = (char *) cs; | |
114 | arg = skip_spaces (arg); | |
115 | if (!*arg) | |
116 | error (_("argument to `%s' missing"), arg_start); | |
117 | ||
118 | arg_end = skip_to_space (arg); | |
119 | ||
120 | /* We make a copy here so we can write over parts with impunity. */ | |
121 | arg = savestring (arg, arg_end - arg); | |
122 | cleanup = make_cleanup (xfree, arg); | |
123 | ||
124 | /* Extract each word from the argument, separated by ":"s. */ | |
125 | p = strchr (arg, ':'); | |
126 | if (p == NULL) | |
127 | { | |
128 | /* This is `-p name'. */ | |
129 | name = arg; | |
130 | } | |
131 | else | |
132 | { | |
133 | char *hold = p + 1; | |
134 | ||
135 | *p = '\0'; | |
136 | p = strchr (hold, ':'); | |
137 | if (p == NULL) | |
138 | { | |
139 | /* This is `-p provider:name'. */ | |
140 | provider = arg; | |
141 | name = hold; | |
142 | } | |
143 | else | |
144 | { | |
145 | /* This is `-p objfile:provider:name'. */ | |
146 | *p = '\0'; | |
4721dc18 | 147 | objfile_namestr = arg; |
55aa24fb SDJ |
148 | provider = hold; |
149 | name = p + 1; | |
150 | } | |
151 | } | |
152 | ||
153 | if (*name == '\0') | |
154 | error (_("no probe name specified")); | |
155 | if (provider && *provider == '\0') | |
156 | error (_("invalid provider name")); | |
4721dc18 | 157 | if (objfile_namestr && *objfile_namestr == '\0') |
55aa24fb SDJ |
158 | error (_("invalid objfile name")); |
159 | ||
6c5b2ebe | 160 | std::vector<symtab_and_line> result; |
c2f4122d PA |
161 | if (search_pspace != NULL) |
162 | { | |
163 | parse_probes_in_pspace (probe_ops, search_pspace, objfile_namestr, | |
164 | provider, name, &result); | |
165 | } | |
166 | else | |
167 | { | |
168 | struct program_space *pspace; | |
55aa24fb | 169 | |
c2f4122d PA |
170 | ALL_PSPACES (pspace) |
171 | parse_probes_in_pspace (probe_ops, pspace, objfile_namestr, | |
172 | provider, name, &result); | |
173 | } | |
55aa24fb | 174 | |
6c5b2ebe | 175 | if (result.empty ()) |
55aa24fb SDJ |
176 | { |
177 | throw_error (NOT_FOUND_ERROR, | |
178 | _("No probe matching objfile=`%s', provider=`%s', name=`%s'"), | |
4721dc18 | 179 | objfile_namestr ? objfile_namestr : _("<any>"), |
55aa24fb SDJ |
180 | provider ? provider : _("<any>"), |
181 | name); | |
182 | } | |
183 | ||
184 | if (canonical) | |
185 | { | |
f00aae0f KS |
186 | char *canon; |
187 | ||
188 | canon = savestring (arg_start, arg_end - arg_start); | |
189 | make_cleanup (xfree, canon); | |
55aa24fb SDJ |
190 | canonical->special_display = 1; |
191 | canonical->pre_expanded = 1; | |
8e9e35b1 | 192 | canonical->location = new_probe_location (canon); |
55aa24fb SDJ |
193 | } |
194 | ||
55aa24fb SDJ |
195 | do_cleanups (cleanup); |
196 | ||
197 | return result; | |
198 | } | |
199 | ||
200 | /* See definition in probe.h. */ | |
201 | ||
202 | VEC (probe_p) * | |
203 | find_probes_in_objfile (struct objfile *objfile, const char *provider, | |
204 | const char *name) | |
205 | { | |
aaa63a31 | 206 | VEC (probe_p) *result = NULL; |
55aa24fb SDJ |
207 | |
208 | if (!objfile->sf || !objfile->sf->sym_probe_fns) | |
209 | return NULL; | |
210 | ||
aaa63a31 SM |
211 | const std::vector<probe *> &probes |
212 | = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
213 | for (struct probe *probe : probes) | |
55aa24fb SDJ |
214 | { |
215 | if (strcmp (probe->provider, provider) != 0) | |
216 | continue; | |
217 | ||
218 | if (strcmp (probe->name, name) != 0) | |
219 | continue; | |
220 | ||
221 | VEC_safe_push (probe_p, result, probe); | |
222 | } | |
223 | ||
224 | return result; | |
225 | } | |
226 | ||
227 | /* See definition in probe.h. */ | |
228 | ||
729662a5 | 229 | struct bound_probe |
6bac7473 | 230 | find_probe_by_pc (CORE_ADDR pc) |
55aa24fb SDJ |
231 | { |
232 | struct objfile *objfile; | |
729662a5 TT |
233 | struct bound_probe result; |
234 | ||
235 | result.objfile = NULL; | |
236 | result.probe = NULL; | |
55aa24fb SDJ |
237 | |
238 | ALL_OBJFILES (objfile) | |
239 | { | |
729662a5 TT |
240 | if (!objfile->sf || !objfile->sf->sym_probe_fns |
241 | || objfile->sect_index_text == -1) | |
55aa24fb SDJ |
242 | continue; |
243 | ||
244 | /* If this proves too inefficient, we can replace with a hash. */ | |
aaa63a31 SM |
245 | const std::vector<probe *> &probes |
246 | = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
247 | for (struct probe *probe : probes) | |
729662a5 TT |
248 | if (get_probe_address (probe, objfile) == pc) |
249 | { | |
250 | result.objfile = objfile; | |
251 | result.probe = probe; | |
252 | return result; | |
253 | } | |
55aa24fb SDJ |
254 | } |
255 | ||
729662a5 | 256 | return result; |
55aa24fb SDJ |
257 | } |
258 | ||
259 | \f | |
260 | ||
55aa24fb SDJ |
261 | /* Make a vector of probes matching OBJNAME, PROVIDER, and PROBE_NAME. |
262 | If POPS is not NULL, only probes of this certain probe_ops will match. | |
263 | Each argument is a regexp, or NULL, which matches anything. */ | |
264 | ||
1eac6bea | 265 | static std::vector<bound_probe> |
cb791d59 TT |
266 | collect_probes (const std::string &objname, const std::string &provider, |
267 | const std::string &probe_name, const struct probe_ops *pops) | |
55aa24fb SDJ |
268 | { |
269 | struct objfile *objfile; | |
1eac6bea | 270 | std::vector<bound_probe> result; |
2d7cc5c7 | 271 | gdb::optional<compiled_regex> obj_pat, prov_pat, probe_pat; |
55aa24fb | 272 | |
cb791d59 TT |
273 | if (!provider.empty ()) |
274 | prov_pat.emplace (provider.c_str (), REG_NOSUB, | |
275 | _("Invalid provider regexp")); | |
276 | if (!probe_name.empty ()) | |
277 | probe_pat.emplace (probe_name.c_str (), REG_NOSUB, | |
278 | _("Invalid probe regexp")); | |
279 | if (!objname.empty ()) | |
280 | obj_pat.emplace (objname.c_str (), REG_NOSUB, | |
281 | _("Invalid object file regexp")); | |
55aa24fb SDJ |
282 | |
283 | ALL_OBJFILES (objfile) | |
284 | { | |
55aa24fb SDJ |
285 | if (! objfile->sf || ! objfile->sf->sym_probe_fns) |
286 | continue; | |
287 | ||
cb791d59 | 288 | if (obj_pat) |
55aa24fb | 289 | { |
2d7cc5c7 | 290 | if (obj_pat->exec (objfile_name (objfile), 0, NULL, 0) != 0) |
55aa24fb SDJ |
291 | continue; |
292 | } | |
293 | ||
aaa63a31 SM |
294 | const std::vector<probe *> &probes |
295 | = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
55aa24fb | 296 | |
aaa63a31 | 297 | for (struct probe *probe : probes) |
55aa24fb | 298 | { |
55aa24fb SDJ |
299 | if (pops != NULL && probe->pops != pops) |
300 | continue; | |
301 | ||
cb791d59 | 302 | if (prov_pat |
2d7cc5c7 | 303 | && prov_pat->exec (probe->provider, 0, NULL, 0) != 0) |
55aa24fb SDJ |
304 | continue; |
305 | ||
cb791d59 | 306 | if (probe_pat |
2d7cc5c7 | 307 | && probe_pat->exec (probe->name, 0, NULL, 0) != 0) |
55aa24fb SDJ |
308 | continue; |
309 | ||
1eac6bea | 310 | result.emplace_back (probe, objfile); |
55aa24fb SDJ |
311 | } |
312 | } | |
313 | ||
55aa24fb SDJ |
314 | return result; |
315 | } | |
316 | ||
729662a5 | 317 | /* A qsort comparison function for bound_probe_s objects. */ |
55aa24fb | 318 | |
1eac6bea SM |
319 | static bool |
320 | compare_probes (const bound_probe &a, const bound_probe &b) | |
55aa24fb | 321 | { |
55aa24fb SDJ |
322 | int v; |
323 | ||
1eac6bea SM |
324 | v = strcmp (a.probe->provider, b.probe->provider); |
325 | if (v != 0) | |
326 | return v < 0; | |
55aa24fb | 327 | |
1eac6bea SM |
328 | v = strcmp (a.probe->name, b.probe->name); |
329 | if (v != 0) | |
330 | return v < 0; | |
55aa24fb | 331 | |
1eac6bea SM |
332 | if (a.probe->address != b.probe->address) |
333 | return a.probe->address < b.probe->address; | |
55aa24fb | 334 | |
1eac6bea | 335 | return strcmp (objfile_name (a.objfile), objfile_name (b.objfile)) < 0; |
55aa24fb SDJ |
336 | } |
337 | ||
338 | /* Helper function that generate entries in the ui_out table being | |
339 | crafted by `info_probes_for_ops'. */ | |
340 | ||
341 | static void | |
1eac6bea | 342 | gen_ui_out_table_header_info (const std::vector<bound_probe> &probes, |
55aa24fb SDJ |
343 | const struct probe_ops *p) |
344 | { | |
345 | /* `headings' refers to the names of the columns when printing `info | |
346 | probes'. */ | |
347 | VEC (info_probe_column_s) *headings = NULL; | |
348 | struct cleanup *c; | |
349 | info_probe_column_s *column; | |
350 | size_t headings_size; | |
351 | int ix; | |
352 | ||
353 | gdb_assert (p != NULL); | |
354 | ||
355 | if (p->gen_info_probes_table_header == NULL | |
356 | && p->gen_info_probes_table_values == NULL) | |
357 | return; | |
358 | ||
359 | gdb_assert (p->gen_info_probes_table_header != NULL | |
360 | && p->gen_info_probes_table_values != NULL); | |
361 | ||
362 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
363 | p->gen_info_probes_table_header (&headings); | |
364 | ||
365 | headings_size = VEC_length (info_probe_column_s, headings); | |
366 | ||
367 | for (ix = 0; | |
368 | VEC_iterate (info_probe_column_s, headings, ix, column); | |
369 | ++ix) | |
370 | { | |
55aa24fb SDJ |
371 | size_t size_max = strlen (column->print_name); |
372 | ||
1eac6bea | 373 | for (const bound_probe &probe : probes) |
55aa24fb SDJ |
374 | { |
375 | /* `probe_fields' refers to the values of each new field that this | |
376 | probe will display. */ | |
377 | VEC (const_char_ptr) *probe_fields = NULL; | |
378 | struct cleanup *c2; | |
379 | const char *val; | |
380 | int kx; | |
381 | ||
1eac6bea | 382 | if (probe.probe->pops != p) |
55aa24fb SDJ |
383 | continue; |
384 | ||
385 | c2 = make_cleanup (VEC_cleanup (const_char_ptr), &probe_fields); | |
1eac6bea | 386 | p->gen_info_probes_table_values (probe.probe, &probe_fields); |
55aa24fb SDJ |
387 | |
388 | gdb_assert (VEC_length (const_char_ptr, probe_fields) | |
389 | == headings_size); | |
390 | ||
391 | for (kx = 0; VEC_iterate (const_char_ptr, probe_fields, kx, val); | |
392 | ++kx) | |
393 | { | |
394 | /* It is valid to have a NULL value here, which means that the | |
395 | backend does not have something to write and this particular | |
396 | field should be skipped. */ | |
397 | if (val == NULL) | |
398 | continue; | |
399 | ||
325fac50 | 400 | size_max = std::max (strlen (val), size_max); |
55aa24fb SDJ |
401 | } |
402 | do_cleanups (c2); | |
403 | } | |
404 | ||
112e8700 SM |
405 | current_uiout->table_header (size_max, ui_left, |
406 | column->field_name, column->print_name); | |
55aa24fb SDJ |
407 | } |
408 | ||
409 | do_cleanups (c); | |
410 | } | |
411 | ||
6f9b8491 JM |
412 | /* Helper function to print not-applicable strings for all the extra |
413 | columns defined in a probe_ops. */ | |
414 | ||
415 | static void | |
416 | print_ui_out_not_applicables (const struct probe_ops *pops) | |
417 | { | |
418 | struct cleanup *c; | |
419 | VEC (info_probe_column_s) *headings = NULL; | |
420 | info_probe_column_s *column; | |
421 | int ix; | |
422 | ||
423 | if (pops->gen_info_probes_table_header == NULL) | |
424 | return; | |
425 | ||
426 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
427 | pops->gen_info_probes_table_header (&headings); | |
428 | ||
429 | for (ix = 0; | |
430 | VEC_iterate (info_probe_column_s, headings, ix, column); | |
431 | ++ix) | |
112e8700 | 432 | current_uiout->field_string (column->field_name, _("n/a")); |
6f9b8491 JM |
433 | |
434 | do_cleanups (c); | |
435 | } | |
436 | ||
55aa24fb | 437 | /* Helper function to print extra information about a probe and an objfile |
6bac7473 | 438 | represented by PROBE. */ |
55aa24fb SDJ |
439 | |
440 | static void | |
6bac7473 | 441 | print_ui_out_info (struct probe *probe) |
55aa24fb SDJ |
442 | { |
443 | int ix; | |
444 | int j = 0; | |
445 | /* `values' refers to the actual values of each new field in the output | |
446 | of `info probe'. `headings' refers to the names of each new field. */ | |
447 | VEC (const_char_ptr) *values = NULL; | |
448 | VEC (info_probe_column_s) *headings = NULL; | |
449 | info_probe_column_s *column; | |
450 | struct cleanup *c; | |
451 | ||
6bac7473 SDJ |
452 | gdb_assert (probe != NULL); |
453 | gdb_assert (probe->pops != NULL); | |
55aa24fb | 454 | |
6bac7473 SDJ |
455 | if (probe->pops->gen_info_probes_table_header == NULL |
456 | && probe->pops->gen_info_probes_table_values == NULL) | |
55aa24fb SDJ |
457 | return; |
458 | ||
6bac7473 SDJ |
459 | gdb_assert (probe->pops->gen_info_probes_table_header != NULL |
460 | && probe->pops->gen_info_probes_table_values != NULL); | |
55aa24fb SDJ |
461 | |
462 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
463 | make_cleanup (VEC_cleanup (const_char_ptr), &values); | |
464 | ||
6bac7473 SDJ |
465 | probe->pops->gen_info_probes_table_header (&headings); |
466 | probe->pops->gen_info_probes_table_values (probe, &values); | |
55aa24fb SDJ |
467 | |
468 | gdb_assert (VEC_length (info_probe_column_s, headings) | |
469 | == VEC_length (const_char_ptr, values)); | |
470 | ||
471 | for (ix = 0; | |
472 | VEC_iterate (info_probe_column_s, headings, ix, column); | |
473 | ++ix) | |
474 | { | |
475 | const char *val = VEC_index (const_char_ptr, values, j++); | |
476 | ||
477 | if (val == NULL) | |
112e8700 | 478 | current_uiout->field_skip (column->field_name); |
55aa24fb | 479 | else |
112e8700 | 480 | current_uiout->field_string (column->field_name, val); |
55aa24fb SDJ |
481 | } |
482 | ||
483 | do_cleanups (c); | |
484 | } | |
485 | ||
486 | /* Helper function that returns the number of extra fields which POPS will | |
487 | need. */ | |
488 | ||
489 | static int | |
490 | get_number_extra_fields (const struct probe_ops *pops) | |
491 | { | |
492 | VEC (info_probe_column_s) *headings = NULL; | |
493 | struct cleanup *c; | |
494 | int n; | |
495 | ||
496 | if (pops->gen_info_probes_table_header == NULL) | |
497 | return 0; | |
498 | ||
499 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
500 | pops->gen_info_probes_table_header (&headings); | |
501 | ||
502 | n = VEC_length (info_probe_column_s, headings); | |
503 | ||
504 | do_cleanups (c); | |
505 | ||
506 | return n; | |
507 | } | |
508 | ||
6f9b8491 JM |
509 | /* Helper function that returns 1 if there is a probe in PROBES |
510 | featuring the given POPS. It returns 0 otherwise. */ | |
511 | ||
512 | static int | |
1eac6bea | 513 | exists_probe_with_pops (const std::vector<bound_probe> &probes, |
6f9b8491 JM |
514 | const struct probe_ops *pops) |
515 | { | |
516 | struct bound_probe *probe; | |
517 | int ix; | |
518 | ||
1eac6bea SM |
519 | for (const bound_probe &probe : probes) |
520 | if (probe.probe->pops == pops) | |
6f9b8491 JM |
521 | return 1; |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
9aca2ff8 JM |
526 | /* Helper function that parses a probe linespec of the form [PROVIDER |
527 | [PROBE [OBJNAME]]] from the provided string STR. */ | |
528 | ||
529 | static void | |
cb791d59 TT |
530 | parse_probe_linespec (const char *str, std::string *provider, |
531 | std::string *probe_name, std::string *objname) | |
9aca2ff8 | 532 | { |
cb791d59 | 533 | *probe_name = *objname = ""; |
9aca2ff8 | 534 | |
f1735a53 | 535 | *provider = extract_arg (&str); |
cb791d59 | 536 | if (!provider->empty ()) |
9aca2ff8 | 537 | { |
f1735a53 | 538 | *probe_name = extract_arg (&str); |
cb791d59 | 539 | if (!probe_name->empty ()) |
f1735a53 | 540 | *objname = extract_arg (&str); |
9aca2ff8 JM |
541 | } |
542 | } | |
543 | ||
55aa24fb SDJ |
544 | /* See comment in probe.h. */ |
545 | ||
546 | void | |
8236def8 TT |
547 | info_probes_for_ops (const char *arg, int from_tty, |
548 | const struct probe_ops *pops) | |
55aa24fb | 549 | { |
cb791d59 | 550 | std::string provider, probe_name, objname; |
55aa24fb | 551 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
1eac6bea | 552 | int any_found; |
55aa24fb SDJ |
553 | int ui_out_extra_fields = 0; |
554 | size_t size_addr; | |
555 | size_t size_name = strlen ("Name"); | |
556 | size_t size_objname = strlen ("Object"); | |
557 | size_t size_provider = strlen ("Provider"); | |
6f9b8491 | 558 | size_t size_type = strlen ("Type"); |
55aa24fb SDJ |
559 | struct gdbarch *gdbarch = get_current_arch (); |
560 | ||
9aca2ff8 | 561 | parse_probe_linespec (arg, &provider, &probe_name, &objname); |
55aa24fb | 562 | |
1eac6bea SM |
563 | std::vector<bound_probe> probes |
564 | = collect_probes (objname, provider, probe_name, pops); | |
6f9b8491 | 565 | |
55aa24fb SDJ |
566 | if (pops == NULL) |
567 | { | |
568 | const struct probe_ops *po; | |
569 | int ix; | |
570 | ||
571 | /* If the probe_ops is NULL, it means the user has requested a "simple" | |
572 | `info probes', i.e., she wants to print all information about all | |
573 | probes. For that, we have to identify how many extra fields we will | |
574 | need to add in the ui_out table. | |
575 | ||
576 | To do that, we iterate over all probe_ops, querying each one about | |
577 | its extra fields, and incrementing `ui_out_extra_fields' to reflect | |
6f9b8491 JM |
578 | that number. But note that we ignore the probe_ops for which no probes |
579 | are defined with the given search criteria. */ | |
55aa24fb SDJ |
580 | |
581 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix) | |
6f9b8491 JM |
582 | if (exists_probe_with_pops (probes, po)) |
583 | ui_out_extra_fields += get_number_extra_fields (po); | |
55aa24fb SDJ |
584 | } |
585 | else | |
586 | ui_out_extra_fields = get_number_extra_fields (pops); | |
587 | ||
dc9fe180 TT |
588 | { |
589 | ui_out_emit_table table_emitter (current_uiout, | |
590 | 5 + ui_out_extra_fields, | |
1eac6bea | 591 | probes.size (), "StaticProbes"); |
dc9fe180 | 592 | |
1eac6bea | 593 | std::sort (probes.begin (), probes.end (), compare_probes); |
dc9fe180 TT |
594 | |
595 | /* What's the size of an address in our architecture? */ | |
596 | size_addr = gdbarch_addr_bit (gdbarch) == 64 ? 18 : 10; | |
597 | ||
598 | /* Determining the maximum size of each field (`type', `provider', | |
599 | `name' and `objname'). */ | |
1eac6bea | 600 | for (const bound_probe &probe : probes) |
dc9fe180 | 601 | { |
1eac6bea | 602 | const char *probe_type = probe.probe->pops->type_name (probe.probe); |
dc9fe180 TT |
603 | |
604 | size_type = std::max (strlen (probe_type), size_type); | |
1eac6bea SM |
605 | size_name = std::max (strlen (probe.probe->name), size_name); |
606 | size_provider = std::max (strlen (probe.probe->provider), size_provider); | |
607 | size_objname = std::max (strlen (objfile_name (probe.objfile)), | |
dc9fe180 TT |
608 | size_objname); |
609 | } | |
610 | ||
611 | current_uiout->table_header (size_type, ui_left, "type", _("Type")); | |
612 | current_uiout->table_header (size_provider, ui_left, "provider", | |
613 | _("Provider")); | |
614 | current_uiout->table_header (size_name, ui_left, "name", _("Name")); | |
615 | current_uiout->table_header (size_addr, ui_left, "addr", _("Where")); | |
616 | ||
617 | if (pops == NULL) | |
618 | { | |
619 | const struct probe_ops *po; | |
620 | int ix; | |
621 | ||
622 | /* We have to generate the table header for each new probe type | |
623 | that we will print. Note that this excludes probe types not | |
624 | having any defined probe with the search criteria. */ | |
625 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix) | |
626 | if (exists_probe_with_pops (probes, po)) | |
627 | gen_ui_out_table_header_info (probes, po); | |
628 | } | |
629 | else | |
630 | gen_ui_out_table_header_info (probes, pops); | |
631 | ||
632 | current_uiout->table_header (size_objname, ui_left, "object", _("Object")); | |
633 | current_uiout->table_body (); | |
634 | ||
1eac6bea | 635 | for (const bound_probe &probe : probes) |
dc9fe180 | 636 | { |
1eac6bea | 637 | const char *probe_type = probe.probe->pops->type_name (probe.probe); |
dc9fe180 TT |
638 | |
639 | ui_out_emit_tuple tuple_emitter (current_uiout, "probe"); | |
640 | ||
641 | current_uiout->field_string ("type",probe_type); | |
1eac6bea SM |
642 | current_uiout->field_string ("provider", probe.probe->provider); |
643 | current_uiout->field_string ("name", probe.probe->name); | |
644 | current_uiout->field_core_addr ("addr", probe.probe->arch, | |
645 | get_probe_address (probe.probe, | |
646 | probe.objfile)); | |
dc9fe180 TT |
647 | |
648 | if (pops == NULL) | |
649 | { | |
650 | const struct probe_ops *po; | |
651 | int ix; | |
652 | ||
653 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); | |
654 | ++ix) | |
1eac6bea SM |
655 | if (probe.probe->pops == po) |
656 | print_ui_out_info (probe.probe); | |
dc9fe180 TT |
657 | else if (exists_probe_with_pops (probes, po)) |
658 | print_ui_out_not_applicables (po); | |
659 | } | |
660 | else | |
1eac6bea | 661 | print_ui_out_info (probe.probe); |
dc9fe180 TT |
662 | |
663 | current_uiout->field_string ("object", | |
1eac6bea | 664 | objfile_name (probe.objfile)); |
dc9fe180 TT |
665 | current_uiout->text ("\n"); |
666 | } | |
667 | ||
1eac6bea | 668 | any_found = !probes.empty (); |
dc9fe180 | 669 | } |
55aa24fb SDJ |
670 | do_cleanups (cleanup); |
671 | ||
672 | if (!any_found) | |
112e8700 | 673 | current_uiout->message (_("No probes matched.\n")); |
55aa24fb SDJ |
674 | } |
675 | ||
676 | /* Implementation of the `info probes' command. */ | |
677 | ||
678 | static void | |
679 | info_probes_command (char *arg, int from_tty) | |
680 | { | |
681 | info_probes_for_ops (arg, from_tty, NULL); | |
682 | } | |
683 | ||
9aca2ff8 JM |
684 | /* Implementation of the `enable probes' command. */ |
685 | ||
686 | static void | |
687 | enable_probes_command (char *arg, int from_tty) | |
688 | { | |
cb791d59 | 689 | std::string provider, probe_name, objname; |
9aca2ff8 | 690 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
9aca2ff8 JM |
691 | |
692 | parse_probe_linespec ((const char *) arg, &provider, &probe_name, &objname); | |
9aca2ff8 | 693 | |
1eac6bea SM |
694 | std::vector<bound_probe> probes |
695 | = collect_probes (objname, provider, probe_name, NULL); | |
696 | if (probes.empty ()) | |
9aca2ff8 | 697 | { |
112e8700 | 698 | current_uiout->message (_("No probes matched.\n")); |
9aca2ff8 JM |
699 | do_cleanups (cleanup); |
700 | return; | |
701 | } | |
702 | ||
703 | /* Enable the selected probes, provided their backends support the | |
704 | notion of enabling a probe. */ | |
1eac6bea | 705 | for (const bound_probe &probe: probes) |
9aca2ff8 | 706 | { |
1eac6bea | 707 | const struct probe_ops *pops = probe.probe->pops; |
9aca2ff8 JM |
708 | |
709 | if (pops->enable_probe != NULL) | |
710 | { | |
1eac6bea | 711 | pops->enable_probe (probe.probe); |
112e8700 | 712 | current_uiout->message (_("Probe %s:%s enabled.\n"), |
1eac6bea | 713 | probe.probe->provider, probe.probe->name); |
9aca2ff8 JM |
714 | } |
715 | else | |
112e8700 | 716 | current_uiout->message (_("Probe %s:%s cannot be enabled.\n"), |
1eac6bea | 717 | probe.probe->provider, probe.probe->name); |
9aca2ff8 JM |
718 | } |
719 | ||
720 | do_cleanups (cleanup); | |
721 | } | |
722 | ||
723 | /* Implementation of the `disable probes' command. */ | |
724 | ||
725 | static void | |
726 | disable_probes_command (char *arg, int from_tty) | |
727 | { | |
cb791d59 | 728 | std::string provider, probe_name, objname; |
9aca2ff8 | 729 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
9aca2ff8 JM |
730 | |
731 | parse_probe_linespec ((const char *) arg, &provider, &probe_name, &objname); | |
9aca2ff8 | 732 | |
1eac6bea SM |
733 | std::vector<bound_probe> probes |
734 | = collect_probes (objname, provider, probe_name, NULL /* pops */); | |
735 | if (probes.empty ()) | |
9aca2ff8 | 736 | { |
112e8700 | 737 | current_uiout->message (_("No probes matched.\n")); |
9aca2ff8 JM |
738 | do_cleanups (cleanup); |
739 | return; | |
740 | } | |
741 | ||
742 | /* Disable the selected probes, provided their backends support the | |
743 | notion of enabling a probe. */ | |
1eac6bea | 744 | for (const bound_probe &probe : probes) |
9aca2ff8 | 745 | { |
1eac6bea | 746 | const struct probe_ops *pops = probe.probe->pops; |
9aca2ff8 JM |
747 | |
748 | if (pops->disable_probe != NULL) | |
749 | { | |
1eac6bea | 750 | pops->disable_probe (probe.probe); |
112e8700 | 751 | current_uiout->message (_("Probe %s:%s disabled.\n"), |
1eac6bea | 752 | probe.probe->provider, probe.probe->name); |
9aca2ff8 JM |
753 | } |
754 | else | |
112e8700 | 755 | current_uiout->message (_("Probe %s:%s cannot be disabled.\n"), |
1eac6bea | 756 | probe.probe->provider, probe.probe->name); |
9aca2ff8 JM |
757 | } |
758 | ||
759 | do_cleanups (cleanup); | |
760 | } | |
761 | ||
55aa24fb SDJ |
762 | /* See comments in probe.h. */ |
763 | ||
729662a5 TT |
764 | CORE_ADDR |
765 | get_probe_address (struct probe *probe, struct objfile *objfile) | |
766 | { | |
767 | return probe->pops->get_probe_address (probe, objfile); | |
768 | } | |
769 | ||
770 | /* See comments in probe.h. */ | |
771 | ||
9ee6a5ac | 772 | unsigned |
08a6411c | 773 | get_probe_argument_count (struct probe *probe, struct frame_info *frame) |
9ee6a5ac | 774 | { |
08a6411c | 775 | return probe->pops->get_probe_argument_count (probe, frame); |
9ee6a5ac GB |
776 | } |
777 | ||
778 | /* See comments in probe.h. */ | |
779 | ||
25f9533e SDJ |
780 | int |
781 | can_evaluate_probe_arguments (struct probe *probe) | |
782 | { | |
37fbcad0 | 783 | return probe->pops->can_evaluate_probe_arguments (probe); |
25f9533e SDJ |
784 | } |
785 | ||
786 | /* See comments in probe.h. */ | |
787 | ||
9ee6a5ac | 788 | struct value * |
08a6411c SDJ |
789 | evaluate_probe_argument (struct probe *probe, unsigned n, |
790 | struct frame_info *frame) | |
9ee6a5ac | 791 | { |
08a6411c | 792 | return probe->pops->evaluate_probe_argument (probe, n, frame); |
9ee6a5ac GB |
793 | } |
794 | ||
795 | /* See comments in probe.h. */ | |
796 | ||
55aa24fb SDJ |
797 | struct value * |
798 | probe_safe_evaluate_at_pc (struct frame_info *frame, unsigned n) | |
799 | { | |
729662a5 | 800 | struct bound_probe probe; |
2b963b68 | 801 | unsigned n_args; |
55aa24fb | 802 | |
6bac7473 | 803 | probe = find_probe_by_pc (get_frame_pc (frame)); |
729662a5 | 804 | if (!probe.probe) |
55aa24fb | 805 | return NULL; |
55aa24fb | 806 | |
729662a5 | 807 | n_args = get_probe_argument_count (probe.probe, frame); |
2b963b68 | 808 | if (n >= n_args) |
55aa24fb SDJ |
809 | return NULL; |
810 | ||
729662a5 | 811 | return evaluate_probe_argument (probe.probe, n, frame); |
55aa24fb SDJ |
812 | } |
813 | ||
814 | /* See comment in probe.h. */ | |
815 | ||
816 | const struct probe_ops * | |
817 | probe_linespec_to_ops (const char **linespecp) | |
818 | { | |
819 | int ix; | |
820 | const struct probe_ops *probe_ops; | |
821 | ||
822 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, probe_ops); ix++) | |
823 | if (probe_ops->is_linespec (linespecp)) | |
824 | return probe_ops; | |
825 | ||
826 | return NULL; | |
827 | } | |
828 | ||
829 | /* See comment in probe.h. */ | |
830 | ||
831 | int | |
832 | probe_is_linespec_by_keyword (const char **linespecp, const char *const *keywords) | |
833 | { | |
834 | const char *s = *linespecp; | |
835 | const char *const *csp; | |
836 | ||
837 | for (csp = keywords; *csp; csp++) | |
838 | { | |
839 | const char *keyword = *csp; | |
840 | size_t len = strlen (keyword); | |
841 | ||
842 | if (strncmp (s, keyword, len) == 0 && isspace (s[len])) | |
843 | { | |
844 | *linespecp += len + 1; | |
845 | return 1; | |
846 | } | |
847 | } | |
848 | ||
849 | return 0; | |
850 | } | |
851 | ||
852 | /* Implementation of `is_linespec' method for `struct probe_ops'. */ | |
853 | ||
854 | static int | |
855 | probe_any_is_linespec (const char **linespecp) | |
856 | { | |
857 | static const char *const keywords[] = { "-p", "-probe", NULL }; | |
858 | ||
859 | return probe_is_linespec_by_keyword (linespecp, keywords); | |
860 | } | |
861 | ||
862 | /* Dummy method used for `probe_ops_any'. */ | |
863 | ||
864 | static void | |
aaa63a31 | 865 | probe_any_get_probes (std::vector<probe *> *probesp, struct objfile *objfile) |
55aa24fb SDJ |
866 | { |
867 | /* No probes can be provided by this dummy backend. */ | |
868 | } | |
869 | ||
870 | /* Operations associated with a generic probe. */ | |
871 | ||
872 | const struct probe_ops probe_ops_any = | |
873 | { | |
874 | probe_any_is_linespec, | |
875 | probe_any_get_probes, | |
876 | }; | |
877 | ||
878 | /* See comments in probe.h. */ | |
879 | ||
880 | struct cmd_list_element ** | |
881 | info_probes_cmdlist_get (void) | |
882 | { | |
883 | static struct cmd_list_element *info_probes_cmdlist; | |
884 | ||
885 | if (info_probes_cmdlist == NULL) | |
886 | add_prefix_cmd ("probes", class_info, info_probes_command, | |
887 | _("\ | |
888 | Show available static probes.\n\ | |
889 | Usage: info probes [all|TYPE [ARGS]]\n\ | |
890 | TYPE specifies the type of the probe, and can be one of the following:\n\ | |
891 | - stap\n\ | |
892 | If you specify TYPE, there may be additional arguments needed by the\n\ | |
893 | subcommand.\n\ | |
894 | If you do not specify any argument, or specify `all', then the command\n\ | |
895 | will show information about all types of probes."), | |
896 | &info_probes_cmdlist, "info probes ", | |
897 | 0/*allow-unknown*/, &infolist); | |
898 | ||
899 | return &info_probes_cmdlist; | |
900 | } | |
901 | ||
03e98035 JM |
902 | \f |
903 | ||
904 | /* This is called to compute the value of one of the $_probe_arg* | |
905 | convenience variables. */ | |
906 | ||
907 | static struct value * | |
908 | compute_probe_arg (struct gdbarch *arch, struct internalvar *ivar, | |
909 | void *data) | |
910 | { | |
911 | struct frame_info *frame = get_selected_frame (_("No frame selected")); | |
912 | CORE_ADDR pc = get_frame_pc (frame); | |
913 | int sel = (int) (uintptr_t) data; | |
914 | struct bound_probe pc_probe; | |
915 | const struct sym_probe_fns *pc_probe_fns; | |
916 | unsigned n_args; | |
917 | ||
918 | /* SEL == -1 means "_probe_argc". */ | |
919 | gdb_assert (sel >= -1); | |
920 | ||
921 | pc_probe = find_probe_by_pc (pc); | |
922 | if (pc_probe.probe == NULL) | |
923 | error (_("No probe at PC %s"), core_addr_to_string (pc)); | |
924 | ||
925 | n_args = get_probe_argument_count (pc_probe.probe, frame); | |
926 | if (sel == -1) | |
927 | return value_from_longest (builtin_type (arch)->builtin_int, n_args); | |
928 | ||
929 | if (sel >= n_args) | |
930 | error (_("Invalid probe argument %d -- probe has %u arguments available"), | |
931 | sel, n_args); | |
932 | ||
933 | return evaluate_probe_argument (pc_probe.probe, sel, frame); | |
934 | } | |
935 | ||
936 | /* This is called to compile one of the $_probe_arg* convenience | |
937 | variables into an agent expression. */ | |
938 | ||
939 | static void | |
940 | compile_probe_arg (struct internalvar *ivar, struct agent_expr *expr, | |
941 | struct axs_value *value, void *data) | |
942 | { | |
943 | CORE_ADDR pc = expr->scope; | |
944 | int sel = (int) (uintptr_t) data; | |
945 | struct bound_probe pc_probe; | |
946 | const struct sym_probe_fns *pc_probe_fns; | |
947 | int n_args; | |
948 | struct frame_info *frame = get_selected_frame (NULL); | |
949 | ||
950 | /* SEL == -1 means "_probe_argc". */ | |
951 | gdb_assert (sel >= -1); | |
952 | ||
953 | pc_probe = find_probe_by_pc (pc); | |
954 | if (pc_probe.probe == NULL) | |
955 | error (_("No probe at PC %s"), core_addr_to_string (pc)); | |
956 | ||
957 | n_args = get_probe_argument_count (pc_probe.probe, frame); | |
958 | ||
959 | if (sel == -1) | |
960 | { | |
961 | value->kind = axs_rvalue; | |
962 | value->type = builtin_type (expr->gdbarch)->builtin_int; | |
963 | ax_const_l (expr, n_args); | |
964 | return; | |
965 | } | |
966 | ||
967 | gdb_assert (sel >= 0); | |
968 | if (sel >= n_args) | |
969 | error (_("Invalid probe argument %d -- probe has %d arguments available"), | |
970 | sel, n_args); | |
971 | ||
972 | pc_probe.probe->pops->compile_to_ax (pc_probe.probe, expr, value, sel); | |
973 | } | |
974 | ||
975 | static const struct internalvar_funcs probe_funcs = | |
976 | { | |
977 | compute_probe_arg, | |
978 | compile_probe_arg, | |
979 | NULL | |
980 | }; | |
981 | ||
982 | ||
55aa24fb SDJ |
983 | VEC (probe_ops_cp) *all_probe_ops; |
984 | ||
55aa24fb SDJ |
985 | void |
986 | _initialize_probe (void) | |
987 | { | |
988 | VEC_safe_push (probe_ops_cp, all_probe_ops, &probe_ops_any); | |
989 | ||
03e98035 JM |
990 | create_internalvar_type_lazy ("_probe_argc", &probe_funcs, |
991 | (void *) (uintptr_t) -1); | |
992 | create_internalvar_type_lazy ("_probe_arg0", &probe_funcs, | |
993 | (void *) (uintptr_t) 0); | |
994 | create_internalvar_type_lazy ("_probe_arg1", &probe_funcs, | |
995 | (void *) (uintptr_t) 1); | |
996 | create_internalvar_type_lazy ("_probe_arg2", &probe_funcs, | |
997 | (void *) (uintptr_t) 2); | |
998 | create_internalvar_type_lazy ("_probe_arg3", &probe_funcs, | |
999 | (void *) (uintptr_t) 3); | |
1000 | create_internalvar_type_lazy ("_probe_arg4", &probe_funcs, | |
1001 | (void *) (uintptr_t) 4); | |
1002 | create_internalvar_type_lazy ("_probe_arg5", &probe_funcs, | |
1003 | (void *) (uintptr_t) 5); | |
1004 | create_internalvar_type_lazy ("_probe_arg6", &probe_funcs, | |
1005 | (void *) (uintptr_t) 6); | |
1006 | create_internalvar_type_lazy ("_probe_arg7", &probe_funcs, | |
1007 | (void *) (uintptr_t) 7); | |
1008 | create_internalvar_type_lazy ("_probe_arg8", &probe_funcs, | |
1009 | (void *) (uintptr_t) 8); | |
1010 | create_internalvar_type_lazy ("_probe_arg9", &probe_funcs, | |
1011 | (void *) (uintptr_t) 9); | |
1012 | create_internalvar_type_lazy ("_probe_arg10", &probe_funcs, | |
1013 | (void *) (uintptr_t) 10); | |
1014 | create_internalvar_type_lazy ("_probe_arg11", &probe_funcs, | |
1015 | (void *) (uintptr_t) 11); | |
1016 | ||
55aa24fb SDJ |
1017 | add_cmd ("all", class_info, info_probes_command, |
1018 | _("\ | |
1019 | Show information about all type of probes."), | |
1020 | info_probes_cmdlist_get ()); | |
9aca2ff8 JM |
1021 | |
1022 | add_cmd ("probes", class_breakpoint, enable_probes_command, _("\ | |
1023 | Enable probes.\n\ | |
1024 | Usage: enable probes [PROVIDER [NAME [OBJECT]]]\n\ | |
1025 | Each argument is a regular expression, used to select probes.\n\ | |
1026 | PROVIDER matches probe provider names.\n\ | |
1027 | NAME matches the probe names.\n\ | |
1028 | OBJECT matches the executable or shared library name.\n\ | |
1029 | If you do not specify any argument then the command will enable\n\ | |
1030 | all defined probes."), | |
1031 | &enablelist); | |
1032 | ||
1033 | add_cmd ("probes", class_breakpoint, disable_probes_command, _("\ | |
1034 | Disable probes.\n\ | |
1035 | Usage: disable probes [PROVIDER [NAME [OBJECT]]]\n\ | |
1036 | Each argument is a regular expression, used to select probes.\n\ | |
1037 | PROVIDER matches probe provider names.\n\ | |
1038 | NAME matches the probe names.\n\ | |
1039 | OBJECT matches the executable or shared library name.\n\ | |
1040 | If you do not specify any argument then the command will disable\n\ | |
1041 | all defined probes."), | |
1042 | &disablelist); | |
1043 | ||
55aa24fb | 1044 | } |