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55aa24fb SDJ |
1 | /* Generic static probe support for GDB. |
2 | ||
32d0add0 | 3 | Copyright (C) 2012-2015 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" | |
55aa24fb SDJ |
36 | #include <ctype.h> |
37 | ||
729662a5 TT |
38 | typedef struct bound_probe bound_probe_s; |
39 | DEF_VEC_O (bound_probe_s); | |
40 | ||
55aa24fb SDJ |
41 | \f |
42 | ||
43 | /* See definition in probe.h. */ | |
44 | ||
45 | struct symtabs_and_lines | |
46 | parse_probes (char **argptr, struct linespec_result *canonical) | |
47 | { | |
48 | char *arg_start, *arg_end, *arg; | |
4721dc18 | 49 | char *objfile_namestr = NULL, *provider = NULL, *name, *p; |
55aa24fb SDJ |
50 | struct cleanup *cleanup; |
51 | struct symtabs_and_lines result; | |
52 | struct objfile *objfile; | |
53 | struct program_space *pspace; | |
54 | const struct probe_ops *probe_ops; | |
55 | const char *cs; | |
56 | ||
57 | result.sals = NULL; | |
58 | result.nelts = 0; | |
59 | ||
60 | arg_start = *argptr; | |
61 | ||
62 | cs = *argptr; | |
63 | probe_ops = probe_linespec_to_ops (&cs); | |
1bff71c3 SDJ |
64 | if (probe_ops == NULL) |
65 | error (_("'%s' is not a probe linespec"), arg_start); | |
55aa24fb SDJ |
66 | |
67 | arg = (char *) cs; | |
68 | arg = skip_spaces (arg); | |
69 | if (!*arg) | |
70 | error (_("argument to `%s' missing"), arg_start); | |
71 | ||
72 | arg_end = skip_to_space (arg); | |
73 | ||
74 | /* We make a copy here so we can write over parts with impunity. */ | |
75 | arg = savestring (arg, arg_end - arg); | |
76 | cleanup = make_cleanup (xfree, arg); | |
77 | ||
78 | /* Extract each word from the argument, separated by ":"s. */ | |
79 | p = strchr (arg, ':'); | |
80 | if (p == NULL) | |
81 | { | |
82 | /* This is `-p name'. */ | |
83 | name = arg; | |
84 | } | |
85 | else | |
86 | { | |
87 | char *hold = p + 1; | |
88 | ||
89 | *p = '\0'; | |
90 | p = strchr (hold, ':'); | |
91 | if (p == NULL) | |
92 | { | |
93 | /* This is `-p provider:name'. */ | |
94 | provider = arg; | |
95 | name = hold; | |
96 | } | |
97 | else | |
98 | { | |
99 | /* This is `-p objfile:provider:name'. */ | |
100 | *p = '\0'; | |
4721dc18 | 101 | objfile_namestr = arg; |
55aa24fb SDJ |
102 | provider = hold; |
103 | name = p + 1; | |
104 | } | |
105 | } | |
106 | ||
107 | if (*name == '\0') | |
108 | error (_("no probe name specified")); | |
109 | if (provider && *provider == '\0') | |
110 | error (_("invalid provider name")); | |
4721dc18 | 111 | if (objfile_namestr && *objfile_namestr == '\0') |
55aa24fb SDJ |
112 | error (_("invalid objfile name")); |
113 | ||
114 | ALL_PSPACES (pspace) | |
115 | ALL_PSPACE_OBJFILES (pspace, objfile) | |
116 | { | |
117 | VEC (probe_p) *probes; | |
118 | struct probe *probe; | |
119 | int ix; | |
120 | ||
121 | if (!objfile->sf || !objfile->sf->sym_probe_fns) | |
122 | continue; | |
123 | ||
4721dc18 | 124 | if (objfile_namestr |
4262abfb JK |
125 | && FILENAME_CMP (objfile_name (objfile), objfile_namestr) != 0 |
126 | && FILENAME_CMP (lbasename (objfile_name (objfile)), | |
127 | objfile_namestr) != 0) | |
55aa24fb SDJ |
128 | continue; |
129 | ||
55aa24fb SDJ |
130 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); |
131 | ||
132 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) | |
133 | { | |
134 | struct symtab_and_line *sal; | |
135 | ||
136 | if (probe_ops != &probe_ops_any && probe->pops != probe_ops) | |
137 | continue; | |
138 | ||
139 | if (provider && strcmp (probe->provider, provider) != 0) | |
140 | continue; | |
141 | ||
142 | if (strcmp (probe->name, name) != 0) | |
143 | continue; | |
144 | ||
145 | ++result.nelts; | |
146 | result.sals = xrealloc (result.sals, | |
147 | result.nelts | |
148 | * sizeof (struct symtab_and_line)); | |
149 | sal = &result.sals[result.nelts - 1]; | |
150 | ||
151 | init_sal (sal); | |
152 | ||
729662a5 | 153 | sal->pc = get_probe_address (probe, objfile); |
55aa24fb SDJ |
154 | sal->explicit_pc = 1; |
155 | sal->section = find_pc_overlay (sal->pc); | |
156 | sal->pspace = pspace; | |
157 | sal->probe = probe; | |
729662a5 | 158 | sal->objfile = objfile; |
55aa24fb SDJ |
159 | } |
160 | } | |
161 | ||
162 | if (result.nelts == 0) | |
163 | { | |
164 | throw_error (NOT_FOUND_ERROR, | |
165 | _("No probe matching objfile=`%s', provider=`%s', name=`%s'"), | |
4721dc18 | 166 | objfile_namestr ? objfile_namestr : _("<any>"), |
55aa24fb SDJ |
167 | provider ? provider : _("<any>"), |
168 | name); | |
169 | } | |
170 | ||
171 | if (canonical) | |
172 | { | |
173 | canonical->special_display = 1; | |
174 | canonical->pre_expanded = 1; | |
175 | canonical->addr_string = savestring (*argptr, arg_end - *argptr); | |
176 | } | |
177 | ||
178 | *argptr = arg_end; | |
179 | do_cleanups (cleanup); | |
180 | ||
181 | return result; | |
182 | } | |
183 | ||
184 | /* See definition in probe.h. */ | |
185 | ||
186 | VEC (probe_p) * | |
187 | find_probes_in_objfile (struct objfile *objfile, const char *provider, | |
188 | const char *name) | |
189 | { | |
190 | VEC (probe_p) *probes, *result = NULL; | |
191 | int ix; | |
192 | struct probe *probe; | |
193 | ||
194 | if (!objfile->sf || !objfile->sf->sym_probe_fns) | |
195 | return NULL; | |
196 | ||
197 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
198 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) | |
199 | { | |
200 | if (strcmp (probe->provider, provider) != 0) | |
201 | continue; | |
202 | ||
203 | if (strcmp (probe->name, name) != 0) | |
204 | continue; | |
205 | ||
206 | VEC_safe_push (probe_p, result, probe); | |
207 | } | |
208 | ||
209 | return result; | |
210 | } | |
211 | ||
212 | /* See definition in probe.h. */ | |
213 | ||
729662a5 | 214 | struct bound_probe |
6bac7473 | 215 | find_probe_by_pc (CORE_ADDR pc) |
55aa24fb SDJ |
216 | { |
217 | struct objfile *objfile; | |
729662a5 TT |
218 | struct bound_probe result; |
219 | ||
220 | result.objfile = NULL; | |
221 | result.probe = NULL; | |
55aa24fb SDJ |
222 | |
223 | ALL_OBJFILES (objfile) | |
224 | { | |
225 | VEC (probe_p) *probes; | |
226 | int ix; | |
227 | struct probe *probe; | |
228 | ||
729662a5 TT |
229 | if (!objfile->sf || !objfile->sf->sym_probe_fns |
230 | || objfile->sect_index_text == -1) | |
55aa24fb SDJ |
231 | continue; |
232 | ||
233 | /* If this proves too inefficient, we can replace with a hash. */ | |
234 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
235 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) | |
729662a5 TT |
236 | if (get_probe_address (probe, objfile) == pc) |
237 | { | |
238 | result.objfile = objfile; | |
239 | result.probe = probe; | |
240 | return result; | |
241 | } | |
55aa24fb SDJ |
242 | } |
243 | ||
729662a5 | 244 | return result; |
55aa24fb SDJ |
245 | } |
246 | ||
247 | \f | |
248 | ||
55aa24fb SDJ |
249 | /* Make a vector of probes matching OBJNAME, PROVIDER, and PROBE_NAME. |
250 | If POPS is not NULL, only probes of this certain probe_ops will match. | |
251 | Each argument is a regexp, or NULL, which matches anything. */ | |
252 | ||
729662a5 | 253 | static VEC (bound_probe_s) * |
55aa24fb SDJ |
254 | collect_probes (char *objname, char *provider, char *probe_name, |
255 | const struct probe_ops *pops) | |
256 | { | |
257 | struct objfile *objfile; | |
729662a5 | 258 | VEC (bound_probe_s) *result = NULL; |
55aa24fb SDJ |
259 | struct cleanup *cleanup, *cleanup_temps; |
260 | regex_t obj_pat, prov_pat, probe_pat; | |
261 | ||
729662a5 | 262 | cleanup = make_cleanup (VEC_cleanup (bound_probe_s), &result); |
55aa24fb SDJ |
263 | |
264 | cleanup_temps = make_cleanup (null_cleanup, NULL); | |
db26349c TT |
265 | if (provider != NULL) |
266 | compile_rx_or_error (&prov_pat, provider, _("Invalid provider regexp")); | |
267 | if (probe_name != NULL) | |
268 | compile_rx_or_error (&probe_pat, probe_name, _("Invalid probe regexp")); | |
269 | if (objname != NULL) | |
270 | compile_rx_or_error (&obj_pat, objname, _("Invalid object file regexp")); | |
55aa24fb SDJ |
271 | |
272 | ALL_OBJFILES (objfile) | |
273 | { | |
274 | VEC (probe_p) *probes; | |
275 | struct probe *probe; | |
276 | int ix; | |
277 | ||
278 | if (! objfile->sf || ! objfile->sf->sym_probe_fns) | |
279 | continue; | |
280 | ||
281 | if (objname) | |
282 | { | |
4262abfb | 283 | if (regexec (&obj_pat, objfile_name (objfile), 0, NULL, 0) != 0) |
55aa24fb SDJ |
284 | continue; |
285 | } | |
286 | ||
287 | probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile); | |
288 | ||
289 | for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++) | |
290 | { | |
729662a5 TT |
291 | struct bound_probe bound; |
292 | ||
55aa24fb SDJ |
293 | if (pops != NULL && probe->pops != pops) |
294 | continue; | |
295 | ||
296 | if (provider | |
297 | && regexec (&prov_pat, probe->provider, 0, NULL, 0) != 0) | |
298 | continue; | |
299 | ||
300 | if (probe_name | |
301 | && regexec (&probe_pat, probe->name, 0, NULL, 0) != 0) | |
302 | continue; | |
303 | ||
729662a5 TT |
304 | bound.objfile = objfile; |
305 | bound.probe = probe; | |
306 | VEC_safe_push (bound_probe_s, result, &bound); | |
55aa24fb SDJ |
307 | } |
308 | } | |
309 | ||
310 | do_cleanups (cleanup_temps); | |
311 | discard_cleanups (cleanup); | |
312 | return result; | |
313 | } | |
314 | ||
729662a5 | 315 | /* A qsort comparison function for bound_probe_s objects. */ |
55aa24fb SDJ |
316 | |
317 | static int | |
6bac7473 | 318 | compare_probes (const void *a, const void *b) |
55aa24fb | 319 | { |
729662a5 TT |
320 | const struct bound_probe *pa = (const struct bound_probe *) a; |
321 | const struct bound_probe *pb = (const struct bound_probe *) b; | |
55aa24fb SDJ |
322 | int v; |
323 | ||
729662a5 | 324 | v = strcmp (pa->probe->provider, pb->probe->provider); |
55aa24fb SDJ |
325 | if (v) |
326 | return v; | |
327 | ||
729662a5 | 328 | v = strcmp (pa->probe->name, pb->probe->name); |
55aa24fb SDJ |
329 | if (v) |
330 | return v; | |
331 | ||
729662a5 | 332 | if (pa->probe->address < pb->probe->address) |
55aa24fb | 333 | return -1; |
729662a5 | 334 | if (pa->probe->address > pb->probe->address) |
55aa24fb SDJ |
335 | return 1; |
336 | ||
4262abfb | 337 | return strcmp (objfile_name (pa->objfile), objfile_name (pb->objfile)); |
55aa24fb SDJ |
338 | } |
339 | ||
340 | /* Helper function that generate entries in the ui_out table being | |
341 | crafted by `info_probes_for_ops'. */ | |
342 | ||
343 | static void | |
729662a5 | 344 | gen_ui_out_table_header_info (VEC (bound_probe_s) *probes, |
55aa24fb SDJ |
345 | const struct probe_ops *p) |
346 | { | |
347 | /* `headings' refers to the names of the columns when printing `info | |
348 | probes'. */ | |
349 | VEC (info_probe_column_s) *headings = NULL; | |
350 | struct cleanup *c; | |
351 | info_probe_column_s *column; | |
352 | size_t headings_size; | |
353 | int ix; | |
354 | ||
355 | gdb_assert (p != NULL); | |
356 | ||
357 | if (p->gen_info_probes_table_header == NULL | |
358 | && p->gen_info_probes_table_values == NULL) | |
359 | return; | |
360 | ||
361 | gdb_assert (p->gen_info_probes_table_header != NULL | |
362 | && p->gen_info_probes_table_values != NULL); | |
363 | ||
364 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
365 | p->gen_info_probes_table_header (&headings); | |
366 | ||
367 | headings_size = VEC_length (info_probe_column_s, headings); | |
368 | ||
369 | for (ix = 0; | |
370 | VEC_iterate (info_probe_column_s, headings, ix, column); | |
371 | ++ix) | |
372 | { | |
729662a5 | 373 | struct bound_probe *probe; |
55aa24fb SDJ |
374 | int jx; |
375 | size_t size_max = strlen (column->print_name); | |
376 | ||
729662a5 | 377 | for (jx = 0; VEC_iterate (bound_probe_s, probes, jx, probe); ++jx) |
55aa24fb SDJ |
378 | { |
379 | /* `probe_fields' refers to the values of each new field that this | |
380 | probe will display. */ | |
381 | VEC (const_char_ptr) *probe_fields = NULL; | |
382 | struct cleanup *c2; | |
383 | const char *val; | |
384 | int kx; | |
385 | ||
729662a5 | 386 | if (probe->probe->pops != p) |
55aa24fb SDJ |
387 | continue; |
388 | ||
389 | c2 = make_cleanup (VEC_cleanup (const_char_ptr), &probe_fields); | |
729662a5 | 390 | p->gen_info_probes_table_values (probe->probe, &probe_fields); |
55aa24fb SDJ |
391 | |
392 | gdb_assert (VEC_length (const_char_ptr, probe_fields) | |
393 | == headings_size); | |
394 | ||
395 | for (kx = 0; VEC_iterate (const_char_ptr, probe_fields, kx, val); | |
396 | ++kx) | |
397 | { | |
398 | /* It is valid to have a NULL value here, which means that the | |
399 | backend does not have something to write and this particular | |
400 | field should be skipped. */ | |
401 | if (val == NULL) | |
402 | continue; | |
403 | ||
404 | size_max = max (strlen (val), size_max); | |
405 | } | |
406 | do_cleanups (c2); | |
407 | } | |
408 | ||
409 | ui_out_table_header (current_uiout, size_max, ui_left, | |
410 | column->field_name, column->print_name); | |
411 | } | |
412 | ||
413 | do_cleanups (c); | |
414 | } | |
415 | ||
6f9b8491 JM |
416 | /* Helper function to print not-applicable strings for all the extra |
417 | columns defined in a probe_ops. */ | |
418 | ||
419 | static void | |
420 | print_ui_out_not_applicables (const struct probe_ops *pops) | |
421 | { | |
422 | struct cleanup *c; | |
423 | VEC (info_probe_column_s) *headings = NULL; | |
424 | info_probe_column_s *column; | |
425 | int ix; | |
426 | ||
427 | if (pops->gen_info_probes_table_header == NULL) | |
428 | return; | |
429 | ||
430 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
431 | pops->gen_info_probes_table_header (&headings); | |
432 | ||
433 | for (ix = 0; | |
434 | VEC_iterate (info_probe_column_s, headings, ix, column); | |
435 | ++ix) | |
436 | ui_out_field_string (current_uiout, column->field_name, _("n/a")); | |
437 | ||
438 | do_cleanups (c); | |
439 | } | |
440 | ||
55aa24fb | 441 | /* Helper function to print extra information about a probe and an objfile |
6bac7473 | 442 | represented by PROBE. */ |
55aa24fb SDJ |
443 | |
444 | static void | |
6bac7473 | 445 | print_ui_out_info (struct probe *probe) |
55aa24fb SDJ |
446 | { |
447 | int ix; | |
448 | int j = 0; | |
449 | /* `values' refers to the actual values of each new field in the output | |
450 | of `info probe'. `headings' refers to the names of each new field. */ | |
451 | VEC (const_char_ptr) *values = NULL; | |
452 | VEC (info_probe_column_s) *headings = NULL; | |
453 | info_probe_column_s *column; | |
454 | struct cleanup *c; | |
455 | ||
6bac7473 SDJ |
456 | gdb_assert (probe != NULL); |
457 | gdb_assert (probe->pops != NULL); | |
55aa24fb | 458 | |
6bac7473 SDJ |
459 | if (probe->pops->gen_info_probes_table_header == NULL |
460 | && probe->pops->gen_info_probes_table_values == NULL) | |
55aa24fb SDJ |
461 | return; |
462 | ||
6bac7473 SDJ |
463 | gdb_assert (probe->pops->gen_info_probes_table_header != NULL |
464 | && probe->pops->gen_info_probes_table_values != NULL); | |
55aa24fb SDJ |
465 | |
466 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
467 | make_cleanup (VEC_cleanup (const_char_ptr), &values); | |
468 | ||
6bac7473 SDJ |
469 | probe->pops->gen_info_probes_table_header (&headings); |
470 | probe->pops->gen_info_probes_table_values (probe, &values); | |
55aa24fb SDJ |
471 | |
472 | gdb_assert (VEC_length (info_probe_column_s, headings) | |
473 | == VEC_length (const_char_ptr, values)); | |
474 | ||
475 | for (ix = 0; | |
476 | VEC_iterate (info_probe_column_s, headings, ix, column); | |
477 | ++ix) | |
478 | { | |
479 | const char *val = VEC_index (const_char_ptr, values, j++); | |
480 | ||
481 | if (val == NULL) | |
482 | ui_out_field_skip (current_uiout, column->field_name); | |
483 | else | |
484 | ui_out_field_string (current_uiout, column->field_name, val); | |
485 | } | |
486 | ||
487 | do_cleanups (c); | |
488 | } | |
489 | ||
490 | /* Helper function that returns the number of extra fields which POPS will | |
491 | need. */ | |
492 | ||
493 | static int | |
494 | get_number_extra_fields (const struct probe_ops *pops) | |
495 | { | |
496 | VEC (info_probe_column_s) *headings = NULL; | |
497 | struct cleanup *c; | |
498 | int n; | |
499 | ||
500 | if (pops->gen_info_probes_table_header == NULL) | |
501 | return 0; | |
502 | ||
503 | c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings); | |
504 | pops->gen_info_probes_table_header (&headings); | |
505 | ||
506 | n = VEC_length (info_probe_column_s, headings); | |
507 | ||
508 | do_cleanups (c); | |
509 | ||
510 | return n; | |
511 | } | |
512 | ||
6f9b8491 JM |
513 | /* Helper function that returns 1 if there is a probe in PROBES |
514 | featuring the given POPS. It returns 0 otherwise. */ | |
515 | ||
516 | static int | |
517 | exists_probe_with_pops (VEC (bound_probe_s) *probes, | |
518 | const struct probe_ops *pops) | |
519 | { | |
520 | struct bound_probe *probe; | |
521 | int ix; | |
522 | ||
523 | for (ix = 0; VEC_iterate (bound_probe_s, probes, ix, probe); ++ix) | |
524 | if (probe->probe->pops == pops) | |
525 | return 1; | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
9aca2ff8 JM |
530 | /* Helper function that parses a probe linespec of the form [PROVIDER |
531 | [PROBE [OBJNAME]]] from the provided string STR. */ | |
532 | ||
533 | static void | |
534 | parse_probe_linespec (const char *str, char **provider, | |
535 | char **probe_name, char **objname) | |
536 | { | |
537 | *probe_name = *objname = NULL; | |
538 | ||
539 | *provider = extract_arg_const (&str); | |
540 | if (*provider != NULL) | |
541 | { | |
542 | *probe_name = extract_arg_const (&str); | |
543 | if (*probe_name != NULL) | |
544 | *objname = extract_arg_const (&str); | |
545 | } | |
546 | } | |
547 | ||
55aa24fb SDJ |
548 | /* See comment in probe.h. */ |
549 | ||
550 | void | |
8236def8 TT |
551 | info_probes_for_ops (const char *arg, int from_tty, |
552 | const struct probe_ops *pops) | |
55aa24fb | 553 | { |
6bac7473 | 554 | char *provider, *probe_name = NULL, *objname = NULL; |
55aa24fb | 555 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); |
729662a5 | 556 | VEC (bound_probe_s) *probes; |
55aa24fb SDJ |
557 | int i, any_found; |
558 | int ui_out_extra_fields = 0; | |
559 | size_t size_addr; | |
560 | size_t size_name = strlen ("Name"); | |
561 | size_t size_objname = strlen ("Object"); | |
562 | size_t size_provider = strlen ("Provider"); | |
6f9b8491 | 563 | size_t size_type = strlen ("Type"); |
729662a5 | 564 | struct bound_probe *probe; |
55aa24fb SDJ |
565 | struct gdbarch *gdbarch = get_current_arch (); |
566 | ||
9aca2ff8 JM |
567 | parse_probe_linespec (arg, &provider, &probe_name, &objname); |
568 | make_cleanup (xfree, provider); | |
569 | make_cleanup (xfree, probe_name); | |
570 | make_cleanup (xfree, objname); | |
55aa24fb | 571 | |
6f9b8491 JM |
572 | probes = collect_probes (objname, provider, probe_name, pops); |
573 | make_cleanup (VEC_cleanup (probe_p), &probes); | |
574 | ||
55aa24fb SDJ |
575 | if (pops == NULL) |
576 | { | |
577 | const struct probe_ops *po; | |
578 | int ix; | |
579 | ||
580 | /* If the probe_ops is NULL, it means the user has requested a "simple" | |
581 | `info probes', i.e., she wants to print all information about all | |
582 | probes. For that, we have to identify how many extra fields we will | |
583 | need to add in the ui_out table. | |
584 | ||
585 | To do that, we iterate over all probe_ops, querying each one about | |
586 | its extra fields, and incrementing `ui_out_extra_fields' to reflect | |
6f9b8491 JM |
587 | that number. But note that we ignore the probe_ops for which no probes |
588 | are defined with the given search criteria. */ | |
55aa24fb SDJ |
589 | |
590 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix) | |
6f9b8491 JM |
591 | if (exists_probe_with_pops (probes, po)) |
592 | ui_out_extra_fields += get_number_extra_fields (po); | |
55aa24fb SDJ |
593 | } |
594 | else | |
595 | ui_out_extra_fields = get_number_extra_fields (pops); | |
596 | ||
55aa24fb | 597 | make_cleanup_ui_out_table_begin_end (current_uiout, |
6f9b8491 | 598 | 5 + ui_out_extra_fields, |
729662a5 | 599 | VEC_length (bound_probe_s, probes), |
55aa24fb SDJ |
600 | "StaticProbes"); |
601 | ||
729662a5 TT |
602 | if (!VEC_empty (bound_probe_s, probes)) |
603 | qsort (VEC_address (bound_probe_s, probes), | |
604 | VEC_length (bound_probe_s, probes), | |
605 | sizeof (bound_probe_s), compare_probes); | |
55aa24fb SDJ |
606 | |
607 | /* What's the size of an address in our architecture? */ | |
608 | size_addr = gdbarch_addr_bit (gdbarch) == 64 ? 18 : 10; | |
609 | ||
6f9b8491 JM |
610 | /* Determining the maximum size of each field (`type', `provider', |
611 | `name' and `objname'). */ | |
729662a5 | 612 | for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i) |
55aa24fb | 613 | { |
6f9b8491 JM |
614 | const char *probe_type = probe->probe->pops->type_name (probe->probe); |
615 | ||
616 | size_type = max (strlen (probe_type), size_type); | |
729662a5 TT |
617 | size_name = max (strlen (probe->probe->name), size_name); |
618 | size_provider = max (strlen (probe->probe->provider), size_provider); | |
4262abfb | 619 | size_objname = max (strlen (objfile_name (probe->objfile)), size_objname); |
55aa24fb SDJ |
620 | } |
621 | ||
6f9b8491 | 622 | ui_out_table_header (current_uiout, size_type, ui_left, "type", _("Type")); |
55aa24fb SDJ |
623 | ui_out_table_header (current_uiout, size_provider, ui_left, "provider", |
624 | _("Provider")); | |
625 | ui_out_table_header (current_uiout, size_name, ui_left, "name", _("Name")); | |
626 | ui_out_table_header (current_uiout, size_addr, ui_left, "addr", _("Where")); | |
627 | ||
628 | if (pops == NULL) | |
629 | { | |
630 | const struct probe_ops *po; | |
631 | int ix; | |
632 | ||
6f9b8491 JM |
633 | /* We have to generate the table header for each new probe type |
634 | that we will print. Note that this excludes probe types not | |
635 | having any defined probe with the search criteria. */ | |
55aa24fb | 636 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix) |
6f9b8491 JM |
637 | if (exists_probe_with_pops (probes, po)) |
638 | gen_ui_out_table_header_info (probes, po); | |
55aa24fb SDJ |
639 | } |
640 | else | |
6bac7473 | 641 | gen_ui_out_table_header_info (probes, pops); |
55aa24fb SDJ |
642 | |
643 | ui_out_table_header (current_uiout, size_objname, ui_left, "object", | |
644 | _("Object")); | |
645 | ui_out_table_body (current_uiout); | |
646 | ||
729662a5 | 647 | for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i) |
55aa24fb SDJ |
648 | { |
649 | struct cleanup *inner; | |
6f9b8491 | 650 | const char *probe_type = probe->probe->pops->type_name (probe->probe); |
55aa24fb SDJ |
651 | |
652 | inner = make_cleanup_ui_out_tuple_begin_end (current_uiout, "probe"); | |
653 | ||
6f9b8491 | 654 | ui_out_field_string (current_uiout, "type",probe_type); |
729662a5 TT |
655 | ui_out_field_string (current_uiout, "provider", probe->probe->provider); |
656 | ui_out_field_string (current_uiout, "name", probe->probe->name); | |
55aa24fb | 657 | ui_out_field_core_addr (current_uiout, "addr", |
729662a5 TT |
658 | probe->probe->arch, |
659 | get_probe_address (probe->probe, probe->objfile)); | |
55aa24fb SDJ |
660 | |
661 | if (pops == NULL) | |
662 | { | |
663 | const struct probe_ops *po; | |
664 | int ix; | |
665 | ||
666 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); | |
667 | ++ix) | |
729662a5 TT |
668 | if (probe->probe->pops == po) |
669 | print_ui_out_info (probe->probe); | |
6f9b8491 JM |
670 | else if (exists_probe_with_pops (probes, po)) |
671 | print_ui_out_not_applicables (po); | |
55aa24fb SDJ |
672 | } |
673 | else | |
729662a5 | 674 | print_ui_out_info (probe->probe); |
55aa24fb | 675 | |
4262abfb JK |
676 | ui_out_field_string (current_uiout, "object", |
677 | objfile_name (probe->objfile)); | |
55aa24fb SDJ |
678 | ui_out_text (current_uiout, "\n"); |
679 | ||
680 | do_cleanups (inner); | |
681 | } | |
682 | ||
729662a5 | 683 | any_found = !VEC_empty (bound_probe_s, probes); |
55aa24fb SDJ |
684 | do_cleanups (cleanup); |
685 | ||
686 | if (!any_found) | |
687 | ui_out_message (current_uiout, 0, _("No probes matched.\n")); | |
688 | } | |
689 | ||
690 | /* Implementation of the `info probes' command. */ | |
691 | ||
692 | static void | |
693 | info_probes_command (char *arg, int from_tty) | |
694 | { | |
695 | info_probes_for_ops (arg, from_tty, NULL); | |
696 | } | |
697 | ||
9aca2ff8 JM |
698 | /* Implementation of the `enable probes' command. */ |
699 | ||
700 | static void | |
701 | enable_probes_command (char *arg, int from_tty) | |
702 | { | |
703 | char *provider, *probe_name = NULL, *objname = NULL; | |
704 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); | |
705 | VEC (bound_probe_s) *probes; | |
706 | struct bound_probe *probe; | |
707 | int i; | |
708 | ||
709 | parse_probe_linespec ((const char *) arg, &provider, &probe_name, &objname); | |
710 | make_cleanup (xfree, provider); | |
711 | make_cleanup (xfree, probe_name); | |
712 | make_cleanup (xfree, objname); | |
713 | ||
714 | probes = collect_probes (objname, provider, probe_name, NULL); | |
715 | if (VEC_empty (bound_probe_s, probes)) | |
716 | { | |
717 | ui_out_message (current_uiout, 0, _("No probes matched.\n")); | |
718 | do_cleanups (cleanup); | |
719 | return; | |
720 | } | |
721 | ||
722 | /* Enable the selected probes, provided their backends support the | |
723 | notion of enabling a probe. */ | |
724 | for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i) | |
725 | { | |
726 | const struct probe_ops *pops = probe->probe->pops; | |
727 | ||
728 | if (pops->enable_probe != NULL) | |
729 | { | |
730 | pops->enable_probe (probe->probe); | |
731 | ui_out_message (current_uiout, 0, | |
732 | _("Probe %s:%s enabled.\n"), | |
733 | probe->probe->provider, probe->probe->name); | |
734 | } | |
735 | else | |
736 | ui_out_message (current_uiout, 0, | |
737 | _("Probe %s:%s cannot be enabled.\n"), | |
738 | probe->probe->provider, probe->probe->name); | |
739 | } | |
740 | ||
741 | do_cleanups (cleanup); | |
742 | } | |
743 | ||
744 | /* Implementation of the `disable probes' command. */ | |
745 | ||
746 | static void | |
747 | disable_probes_command (char *arg, int from_tty) | |
748 | { | |
749 | char *provider, *probe_name = NULL, *objname = NULL; | |
750 | struct cleanup *cleanup = make_cleanup (null_cleanup, NULL); | |
751 | VEC (bound_probe_s) *probes; | |
752 | struct bound_probe *probe; | |
753 | int i; | |
754 | ||
755 | parse_probe_linespec ((const char *) arg, &provider, &probe_name, &objname); | |
756 | make_cleanup (xfree, provider); | |
757 | make_cleanup (xfree, probe_name); | |
758 | make_cleanup (xfree, objname); | |
759 | ||
760 | probes = collect_probes (objname, provider, probe_name, NULL /* pops */); | |
761 | if (VEC_empty (bound_probe_s, probes)) | |
762 | { | |
763 | ui_out_message (current_uiout, 0, _("No probes matched.\n")); | |
764 | do_cleanups (cleanup); | |
765 | return; | |
766 | } | |
767 | ||
768 | /* Disable the selected probes, provided their backends support the | |
769 | notion of enabling a probe. */ | |
770 | for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i) | |
771 | { | |
772 | const struct probe_ops *pops = probe->probe->pops; | |
773 | ||
774 | if (pops->disable_probe != NULL) | |
775 | { | |
776 | pops->disable_probe (probe->probe); | |
777 | ui_out_message (current_uiout, 0, | |
778 | _("Probe %s:%s disabled.\n"), | |
779 | probe->probe->provider, probe->probe->name); | |
780 | } | |
781 | else | |
782 | ui_out_message (current_uiout, 0, | |
783 | _("Probe %s:%s cannot be disabled.\n"), | |
784 | probe->probe->provider, probe->probe->name); | |
785 | } | |
786 | ||
787 | do_cleanups (cleanup); | |
788 | } | |
789 | ||
55aa24fb SDJ |
790 | /* See comments in probe.h. */ |
791 | ||
729662a5 TT |
792 | CORE_ADDR |
793 | get_probe_address (struct probe *probe, struct objfile *objfile) | |
794 | { | |
795 | return probe->pops->get_probe_address (probe, objfile); | |
796 | } | |
797 | ||
798 | /* See comments in probe.h. */ | |
799 | ||
9ee6a5ac | 800 | unsigned |
08a6411c | 801 | get_probe_argument_count (struct probe *probe, struct frame_info *frame) |
9ee6a5ac | 802 | { |
08a6411c | 803 | return probe->pops->get_probe_argument_count (probe, frame); |
9ee6a5ac GB |
804 | } |
805 | ||
806 | /* See comments in probe.h. */ | |
807 | ||
25f9533e SDJ |
808 | int |
809 | can_evaluate_probe_arguments (struct probe *probe) | |
810 | { | |
37fbcad0 | 811 | return probe->pops->can_evaluate_probe_arguments (probe); |
25f9533e SDJ |
812 | } |
813 | ||
814 | /* See comments in probe.h. */ | |
815 | ||
9ee6a5ac | 816 | struct value * |
08a6411c SDJ |
817 | evaluate_probe_argument (struct probe *probe, unsigned n, |
818 | struct frame_info *frame) | |
9ee6a5ac | 819 | { |
08a6411c | 820 | return probe->pops->evaluate_probe_argument (probe, n, frame); |
9ee6a5ac GB |
821 | } |
822 | ||
823 | /* See comments in probe.h. */ | |
824 | ||
55aa24fb SDJ |
825 | struct value * |
826 | probe_safe_evaluate_at_pc (struct frame_info *frame, unsigned n) | |
827 | { | |
729662a5 | 828 | struct bound_probe probe; |
2b963b68 | 829 | unsigned n_args; |
55aa24fb | 830 | |
6bac7473 | 831 | probe = find_probe_by_pc (get_frame_pc (frame)); |
729662a5 | 832 | if (!probe.probe) |
55aa24fb | 833 | return NULL; |
55aa24fb | 834 | |
729662a5 | 835 | n_args = get_probe_argument_count (probe.probe, frame); |
2b963b68 | 836 | if (n >= n_args) |
55aa24fb SDJ |
837 | return NULL; |
838 | ||
729662a5 | 839 | return evaluate_probe_argument (probe.probe, n, frame); |
55aa24fb SDJ |
840 | } |
841 | ||
842 | /* See comment in probe.h. */ | |
843 | ||
844 | const struct probe_ops * | |
845 | probe_linespec_to_ops (const char **linespecp) | |
846 | { | |
847 | int ix; | |
848 | const struct probe_ops *probe_ops; | |
849 | ||
850 | for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, probe_ops); ix++) | |
851 | if (probe_ops->is_linespec (linespecp)) | |
852 | return probe_ops; | |
853 | ||
854 | return NULL; | |
855 | } | |
856 | ||
857 | /* See comment in probe.h. */ | |
858 | ||
859 | int | |
860 | probe_is_linespec_by_keyword (const char **linespecp, const char *const *keywords) | |
861 | { | |
862 | const char *s = *linespecp; | |
863 | const char *const *csp; | |
864 | ||
865 | for (csp = keywords; *csp; csp++) | |
866 | { | |
867 | const char *keyword = *csp; | |
868 | size_t len = strlen (keyword); | |
869 | ||
870 | if (strncmp (s, keyword, len) == 0 && isspace (s[len])) | |
871 | { | |
872 | *linespecp += len + 1; | |
873 | return 1; | |
874 | } | |
875 | } | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | /* Implementation of `is_linespec' method for `struct probe_ops'. */ | |
881 | ||
882 | static int | |
883 | probe_any_is_linespec (const char **linespecp) | |
884 | { | |
885 | static const char *const keywords[] = { "-p", "-probe", NULL }; | |
886 | ||
887 | return probe_is_linespec_by_keyword (linespecp, keywords); | |
888 | } | |
889 | ||
890 | /* Dummy method used for `probe_ops_any'. */ | |
891 | ||
892 | static void | |
893 | probe_any_get_probes (VEC (probe_p) **probesp, struct objfile *objfile) | |
894 | { | |
895 | /* No probes can be provided by this dummy backend. */ | |
896 | } | |
897 | ||
898 | /* Operations associated with a generic probe. */ | |
899 | ||
900 | const struct probe_ops probe_ops_any = | |
901 | { | |
902 | probe_any_is_linespec, | |
903 | probe_any_get_probes, | |
904 | }; | |
905 | ||
906 | /* See comments in probe.h. */ | |
907 | ||
908 | struct cmd_list_element ** | |
909 | info_probes_cmdlist_get (void) | |
910 | { | |
911 | static struct cmd_list_element *info_probes_cmdlist; | |
912 | ||
913 | if (info_probes_cmdlist == NULL) | |
914 | add_prefix_cmd ("probes", class_info, info_probes_command, | |
915 | _("\ | |
916 | Show available static probes.\n\ | |
917 | Usage: info probes [all|TYPE [ARGS]]\n\ | |
918 | TYPE specifies the type of the probe, and can be one of the following:\n\ | |
919 | - stap\n\ | |
920 | If you specify TYPE, there may be additional arguments needed by the\n\ | |
921 | subcommand.\n\ | |
922 | If you do not specify any argument, or specify `all', then the command\n\ | |
923 | will show information about all types of probes."), | |
924 | &info_probes_cmdlist, "info probes ", | |
925 | 0/*allow-unknown*/, &infolist); | |
926 | ||
927 | return &info_probes_cmdlist; | |
928 | } | |
929 | ||
03e98035 JM |
930 | \f |
931 | ||
932 | /* This is called to compute the value of one of the $_probe_arg* | |
933 | convenience variables. */ | |
934 | ||
935 | static struct value * | |
936 | compute_probe_arg (struct gdbarch *arch, struct internalvar *ivar, | |
937 | void *data) | |
938 | { | |
939 | struct frame_info *frame = get_selected_frame (_("No frame selected")); | |
940 | CORE_ADDR pc = get_frame_pc (frame); | |
941 | int sel = (int) (uintptr_t) data; | |
942 | struct bound_probe pc_probe; | |
943 | const struct sym_probe_fns *pc_probe_fns; | |
944 | unsigned n_args; | |
945 | ||
946 | /* SEL == -1 means "_probe_argc". */ | |
947 | gdb_assert (sel >= -1); | |
948 | ||
949 | pc_probe = find_probe_by_pc (pc); | |
950 | if (pc_probe.probe == NULL) | |
951 | error (_("No probe at PC %s"), core_addr_to_string (pc)); | |
952 | ||
953 | n_args = get_probe_argument_count (pc_probe.probe, frame); | |
954 | if (sel == -1) | |
955 | return value_from_longest (builtin_type (arch)->builtin_int, n_args); | |
956 | ||
957 | if (sel >= n_args) | |
958 | error (_("Invalid probe argument %d -- probe has %u arguments available"), | |
959 | sel, n_args); | |
960 | ||
961 | return evaluate_probe_argument (pc_probe.probe, sel, frame); | |
962 | } | |
963 | ||
964 | /* This is called to compile one of the $_probe_arg* convenience | |
965 | variables into an agent expression. */ | |
966 | ||
967 | static void | |
968 | compile_probe_arg (struct internalvar *ivar, struct agent_expr *expr, | |
969 | struct axs_value *value, void *data) | |
970 | { | |
971 | CORE_ADDR pc = expr->scope; | |
972 | int sel = (int) (uintptr_t) data; | |
973 | struct bound_probe pc_probe; | |
974 | const struct sym_probe_fns *pc_probe_fns; | |
975 | int n_args; | |
976 | struct frame_info *frame = get_selected_frame (NULL); | |
977 | ||
978 | /* SEL == -1 means "_probe_argc". */ | |
979 | gdb_assert (sel >= -1); | |
980 | ||
981 | pc_probe = find_probe_by_pc (pc); | |
982 | if (pc_probe.probe == NULL) | |
983 | error (_("No probe at PC %s"), core_addr_to_string (pc)); | |
984 | ||
985 | n_args = get_probe_argument_count (pc_probe.probe, frame); | |
986 | ||
987 | if (sel == -1) | |
988 | { | |
989 | value->kind = axs_rvalue; | |
990 | value->type = builtin_type (expr->gdbarch)->builtin_int; | |
991 | ax_const_l (expr, n_args); | |
992 | return; | |
993 | } | |
994 | ||
995 | gdb_assert (sel >= 0); | |
996 | if (sel >= n_args) | |
997 | error (_("Invalid probe argument %d -- probe has %d arguments available"), | |
998 | sel, n_args); | |
999 | ||
1000 | pc_probe.probe->pops->compile_to_ax (pc_probe.probe, expr, value, sel); | |
1001 | } | |
1002 | ||
1003 | static const struct internalvar_funcs probe_funcs = | |
1004 | { | |
1005 | compute_probe_arg, | |
1006 | compile_probe_arg, | |
1007 | NULL | |
1008 | }; | |
1009 | ||
1010 | ||
55aa24fb SDJ |
1011 | VEC (probe_ops_cp) *all_probe_ops; |
1012 | ||
1013 | void _initialize_probe (void); | |
1014 | ||
1015 | void | |
1016 | _initialize_probe (void) | |
1017 | { | |
1018 | VEC_safe_push (probe_ops_cp, all_probe_ops, &probe_ops_any); | |
1019 | ||
03e98035 JM |
1020 | create_internalvar_type_lazy ("_probe_argc", &probe_funcs, |
1021 | (void *) (uintptr_t) -1); | |
1022 | create_internalvar_type_lazy ("_probe_arg0", &probe_funcs, | |
1023 | (void *) (uintptr_t) 0); | |
1024 | create_internalvar_type_lazy ("_probe_arg1", &probe_funcs, | |
1025 | (void *) (uintptr_t) 1); | |
1026 | create_internalvar_type_lazy ("_probe_arg2", &probe_funcs, | |
1027 | (void *) (uintptr_t) 2); | |
1028 | create_internalvar_type_lazy ("_probe_arg3", &probe_funcs, | |
1029 | (void *) (uintptr_t) 3); | |
1030 | create_internalvar_type_lazy ("_probe_arg4", &probe_funcs, | |
1031 | (void *) (uintptr_t) 4); | |
1032 | create_internalvar_type_lazy ("_probe_arg5", &probe_funcs, | |
1033 | (void *) (uintptr_t) 5); | |
1034 | create_internalvar_type_lazy ("_probe_arg6", &probe_funcs, | |
1035 | (void *) (uintptr_t) 6); | |
1036 | create_internalvar_type_lazy ("_probe_arg7", &probe_funcs, | |
1037 | (void *) (uintptr_t) 7); | |
1038 | create_internalvar_type_lazy ("_probe_arg8", &probe_funcs, | |
1039 | (void *) (uintptr_t) 8); | |
1040 | create_internalvar_type_lazy ("_probe_arg9", &probe_funcs, | |
1041 | (void *) (uintptr_t) 9); | |
1042 | create_internalvar_type_lazy ("_probe_arg10", &probe_funcs, | |
1043 | (void *) (uintptr_t) 10); | |
1044 | create_internalvar_type_lazy ("_probe_arg11", &probe_funcs, | |
1045 | (void *) (uintptr_t) 11); | |
1046 | ||
55aa24fb SDJ |
1047 | add_cmd ("all", class_info, info_probes_command, |
1048 | _("\ | |
1049 | Show information about all type of probes."), | |
1050 | info_probes_cmdlist_get ()); | |
9aca2ff8 JM |
1051 | |
1052 | add_cmd ("probes", class_breakpoint, enable_probes_command, _("\ | |
1053 | Enable probes.\n\ | |
1054 | Usage: enable probes [PROVIDER [NAME [OBJECT]]]\n\ | |
1055 | Each argument is a regular expression, used to select probes.\n\ | |
1056 | PROVIDER matches probe provider names.\n\ | |
1057 | NAME matches the probe names.\n\ | |
1058 | OBJECT matches the executable or shared library name.\n\ | |
1059 | If you do not specify any argument then the command will enable\n\ | |
1060 | all defined probes."), | |
1061 | &enablelist); | |
1062 | ||
1063 | add_cmd ("probes", class_breakpoint, disable_probes_command, _("\ | |
1064 | Disable probes.\n\ | |
1065 | Usage: disable probes [PROVIDER [NAME [OBJECT]]]\n\ | |
1066 | Each argument is a regular expression, used to select probes.\n\ | |
1067 | PROVIDER matches probe provider names.\n\ | |
1068 | NAME matches the probe names.\n\ | |
1069 | OBJECT matches the executable or shared library name.\n\ | |
1070 | If you do not specify any argument then the command will disable\n\ | |
1071 | all defined probes."), | |
1072 | &disablelist); | |
1073 | ||
55aa24fb | 1074 | } |