1 /* Generic static probe support for GDB.
3 Copyright (C) 2012-2017 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
23 #include "cli/cli-cmds.h"
24 #include "cli/cli-utils.h"
27 #include "progspace.h"
28 #include "filenames.h"
30 #include "gdb_regex.h"
32 #include "arch-utils.h"
40 typedef struct bound_probe bound_probe_s;
41 DEF_VEC_O (bound_probe_s);
45 /* A helper for parse_probes that decodes a probe specification in
46 SEARCH_PSPACE. It appends matching SALs to RESULT. */
49 parse_probes_in_pspace (const struct probe_ops *probe_ops,
50 struct program_space *search_pspace,
51 const char *objfile_namestr,
54 struct symtabs_and_lines *result)
56 struct objfile *objfile;
58 ALL_PSPACE_OBJFILES (search_pspace, objfile)
60 VEC (probe_p) *probes;
64 if (!objfile->sf || !objfile->sf->sym_probe_fns)
68 && FILENAME_CMP (objfile_name (objfile), objfile_namestr) != 0
69 && FILENAME_CMP (lbasename (objfile_name (objfile)),
70 objfile_namestr) != 0)
73 probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
75 for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
77 struct symtab_and_line *sal;
79 if (probe_ops != &probe_ops_any && probe->pops != probe_ops)
82 if (provider && strcmp (probe->provider, provider) != 0)
85 if (strcmp (probe->name, name) != 0)
89 result->sals = XRESIZEVEC (struct symtab_and_line, result->sals,
91 sal = &result->sals[result->nelts - 1];
95 sal->pc = get_probe_address (probe, objfile);
97 sal->section = find_pc_overlay (sal->pc);
98 sal->pspace = search_pspace;
100 sal->objfile = objfile;
105 /* See definition in probe.h. */
107 struct symtabs_and_lines
108 parse_probes (const struct event_location *location,
109 struct program_space *search_pspace,
110 struct linespec_result *canonical)
113 char *objfile_namestr = NULL, *provider = NULL, *name, *p;
114 struct cleanup *cleanup;
115 struct symtabs_and_lines result;
116 const struct probe_ops *probe_ops;
117 const char *arg_start, *cs;
122 gdb_assert (event_location_type (location) == PROBE_LOCATION);
123 arg_start = get_probe_location (location);
126 probe_ops = probe_linespec_to_ops (&cs);
127 if (probe_ops == NULL)
128 error (_("'%s' is not a probe linespec"), arg_start);
131 arg = skip_spaces (arg);
133 error (_("argument to `%s' missing"), arg_start);
135 arg_end = skip_to_space (arg);
137 /* We make a copy here so we can write over parts with impunity. */
138 arg = savestring (arg, arg_end - arg);
139 cleanup = make_cleanup (xfree, arg);
141 /* Extract each word from the argument, separated by ":"s. */
142 p = strchr (arg, ':');
145 /* This is `-p name'. */
153 p = strchr (hold, ':');
156 /* This is `-p provider:name'. */
162 /* This is `-p objfile:provider:name'. */
164 objfile_namestr = arg;
171 error (_("no probe name specified"));
172 if (provider && *provider == '\0')
173 error (_("invalid provider name"));
174 if (objfile_namestr && *objfile_namestr == '\0')
175 error (_("invalid objfile name"));
177 if (search_pspace != NULL)
179 parse_probes_in_pspace (probe_ops, search_pspace, objfile_namestr,
180 provider, name, &result);
184 struct program_space *pspace;
187 parse_probes_in_pspace (probe_ops, pspace, objfile_namestr,
188 provider, name, &result);
191 if (result.nelts == 0)
193 throw_error (NOT_FOUND_ERROR,
194 _("No probe matching objfile=`%s', provider=`%s', name=`%s'"),
195 objfile_namestr ? objfile_namestr : _("<any>"),
196 provider ? provider : _("<any>"),
204 canon = savestring (arg_start, arg_end - arg_start);
205 make_cleanup (xfree, canon);
206 canonical->special_display = 1;
207 canonical->pre_expanded = 1;
208 canonical->location = new_probe_location (canon);
211 do_cleanups (cleanup);
216 /* See definition in probe.h. */
219 find_probes_in_objfile (struct objfile *objfile, const char *provider,
222 VEC (probe_p) *probes, *result = NULL;
226 if (!objfile->sf || !objfile->sf->sym_probe_fns)
229 probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
230 for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
232 if (strcmp (probe->provider, provider) != 0)
235 if (strcmp (probe->name, name) != 0)
238 VEC_safe_push (probe_p, result, probe);
244 /* See definition in probe.h. */
247 find_probe_by_pc (CORE_ADDR pc)
249 struct objfile *objfile;
250 struct bound_probe result;
252 result.objfile = NULL;
255 ALL_OBJFILES (objfile)
257 VEC (probe_p) *probes;
261 if (!objfile->sf || !objfile->sf->sym_probe_fns
262 || objfile->sect_index_text == -1)
265 /* If this proves too inefficient, we can replace with a hash. */
266 probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
267 for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
268 if (get_probe_address (probe, objfile) == pc)
270 result.objfile = objfile;
271 result.probe = probe;
281 /* Make a vector of probes matching OBJNAME, PROVIDER, and PROBE_NAME.
282 If POPS is not NULL, only probes of this certain probe_ops will match.
283 Each argument is a regexp, or NULL, which matches anything. */
285 static VEC (bound_probe_s) *
286 collect_probes (char *objname, char *provider, char *probe_name,
287 const struct probe_ops *pops)
289 struct objfile *objfile;
290 VEC (bound_probe_s) *result = NULL;
291 struct cleanup *cleanup, *cleanup_temps;
292 regex_t obj_pat, prov_pat, probe_pat;
294 cleanup = make_cleanup (VEC_cleanup (bound_probe_s), &result);
296 cleanup_temps = make_cleanup (null_cleanup, NULL);
297 if (provider != NULL)
298 compile_rx_or_error (&prov_pat, provider, _("Invalid provider regexp"));
299 if (probe_name != NULL)
300 compile_rx_or_error (&probe_pat, probe_name, _("Invalid probe regexp"));
302 compile_rx_or_error (&obj_pat, objname, _("Invalid object file regexp"));
304 ALL_OBJFILES (objfile)
306 VEC (probe_p) *probes;
310 if (! objfile->sf || ! objfile->sf->sym_probe_fns)
315 if (regexec (&obj_pat, objfile_name (objfile), 0, NULL, 0) != 0)
319 probes = objfile->sf->sym_probe_fns->sym_get_probes (objfile);
321 for (ix = 0; VEC_iterate (probe_p, probes, ix, probe); ix++)
323 struct bound_probe bound;
325 if (pops != NULL && probe->pops != pops)
329 && regexec (&prov_pat, probe->provider, 0, NULL, 0) != 0)
333 && regexec (&probe_pat, probe->name, 0, NULL, 0) != 0)
336 bound.objfile = objfile;
338 VEC_safe_push (bound_probe_s, result, &bound);
342 do_cleanups (cleanup_temps);
343 discard_cleanups (cleanup);
347 /* A qsort comparison function for bound_probe_s objects. */
350 compare_probes (const void *a, const void *b)
352 const struct bound_probe *pa = (const struct bound_probe *) a;
353 const struct bound_probe *pb = (const struct bound_probe *) b;
356 v = strcmp (pa->probe->provider, pb->probe->provider);
360 v = strcmp (pa->probe->name, pb->probe->name);
364 if (pa->probe->address < pb->probe->address)
366 if (pa->probe->address > pb->probe->address)
369 return strcmp (objfile_name (pa->objfile), objfile_name (pb->objfile));
372 /* Helper function that generate entries in the ui_out table being
373 crafted by `info_probes_for_ops'. */
376 gen_ui_out_table_header_info (VEC (bound_probe_s) *probes,
377 const struct probe_ops *p)
379 /* `headings' refers to the names of the columns when printing `info
381 VEC (info_probe_column_s) *headings = NULL;
383 info_probe_column_s *column;
384 size_t headings_size;
387 gdb_assert (p != NULL);
389 if (p->gen_info_probes_table_header == NULL
390 && p->gen_info_probes_table_values == NULL)
393 gdb_assert (p->gen_info_probes_table_header != NULL
394 && p->gen_info_probes_table_values != NULL);
396 c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings);
397 p->gen_info_probes_table_header (&headings);
399 headings_size = VEC_length (info_probe_column_s, headings);
402 VEC_iterate (info_probe_column_s, headings, ix, column);
405 struct bound_probe *probe;
407 size_t size_max = strlen (column->print_name);
409 for (jx = 0; VEC_iterate (bound_probe_s, probes, jx, probe); ++jx)
411 /* `probe_fields' refers to the values of each new field that this
412 probe will display. */
413 VEC (const_char_ptr) *probe_fields = NULL;
418 if (probe->probe->pops != p)
421 c2 = make_cleanup (VEC_cleanup (const_char_ptr), &probe_fields);
422 p->gen_info_probes_table_values (probe->probe, &probe_fields);
424 gdb_assert (VEC_length (const_char_ptr, probe_fields)
427 for (kx = 0; VEC_iterate (const_char_ptr, probe_fields, kx, val);
430 /* It is valid to have a NULL value here, which means that the
431 backend does not have something to write and this particular
432 field should be skipped. */
436 size_max = std::max (strlen (val), size_max);
441 current_uiout->table_header (size_max, ui_left,
442 column->field_name, column->print_name);
448 /* Helper function to print not-applicable strings for all the extra
449 columns defined in a probe_ops. */
452 print_ui_out_not_applicables (const struct probe_ops *pops)
455 VEC (info_probe_column_s) *headings = NULL;
456 info_probe_column_s *column;
459 if (pops->gen_info_probes_table_header == NULL)
462 c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings);
463 pops->gen_info_probes_table_header (&headings);
466 VEC_iterate (info_probe_column_s, headings, ix, column);
468 current_uiout->field_string (column->field_name, _("n/a"));
473 /* Helper function to print extra information about a probe and an objfile
474 represented by PROBE. */
477 print_ui_out_info (struct probe *probe)
481 /* `values' refers to the actual values of each new field in the output
482 of `info probe'. `headings' refers to the names of each new field. */
483 VEC (const_char_ptr) *values = NULL;
484 VEC (info_probe_column_s) *headings = NULL;
485 info_probe_column_s *column;
488 gdb_assert (probe != NULL);
489 gdb_assert (probe->pops != NULL);
491 if (probe->pops->gen_info_probes_table_header == NULL
492 && probe->pops->gen_info_probes_table_values == NULL)
495 gdb_assert (probe->pops->gen_info_probes_table_header != NULL
496 && probe->pops->gen_info_probes_table_values != NULL);
498 c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings);
499 make_cleanup (VEC_cleanup (const_char_ptr), &values);
501 probe->pops->gen_info_probes_table_header (&headings);
502 probe->pops->gen_info_probes_table_values (probe, &values);
504 gdb_assert (VEC_length (info_probe_column_s, headings)
505 == VEC_length (const_char_ptr, values));
508 VEC_iterate (info_probe_column_s, headings, ix, column);
511 const char *val = VEC_index (const_char_ptr, values, j++);
514 current_uiout->field_skip (column->field_name);
516 current_uiout->field_string (column->field_name, val);
522 /* Helper function that returns the number of extra fields which POPS will
526 get_number_extra_fields (const struct probe_ops *pops)
528 VEC (info_probe_column_s) *headings = NULL;
532 if (pops->gen_info_probes_table_header == NULL)
535 c = make_cleanup (VEC_cleanup (info_probe_column_s), &headings);
536 pops->gen_info_probes_table_header (&headings);
538 n = VEC_length (info_probe_column_s, headings);
545 /* Helper function that returns 1 if there is a probe in PROBES
546 featuring the given POPS. It returns 0 otherwise. */
549 exists_probe_with_pops (VEC (bound_probe_s) *probes,
550 const struct probe_ops *pops)
552 struct bound_probe *probe;
555 for (ix = 0; VEC_iterate (bound_probe_s, probes, ix, probe); ++ix)
556 if (probe->probe->pops == pops)
562 /* Helper function that parses a probe linespec of the form [PROVIDER
563 [PROBE [OBJNAME]]] from the provided string STR. */
566 parse_probe_linespec (const char *str, char **provider,
567 char **probe_name, char **objname)
569 *probe_name = *objname = NULL;
571 *provider = extract_arg_const (&str);
572 if (*provider != NULL)
574 *probe_name = extract_arg_const (&str);
575 if (*probe_name != NULL)
576 *objname = extract_arg_const (&str);
580 /* See comment in probe.h. */
583 info_probes_for_ops (const char *arg, int from_tty,
584 const struct probe_ops *pops)
586 char *provider, *probe_name = NULL, *objname = NULL;
587 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
588 VEC (bound_probe_s) *probes;
590 int ui_out_extra_fields = 0;
592 size_t size_name = strlen ("Name");
593 size_t size_objname = strlen ("Object");
594 size_t size_provider = strlen ("Provider");
595 size_t size_type = strlen ("Type");
596 struct bound_probe *probe;
597 struct gdbarch *gdbarch = get_current_arch ();
599 parse_probe_linespec (arg, &provider, &probe_name, &objname);
600 make_cleanup (xfree, provider);
601 make_cleanup (xfree, probe_name);
602 make_cleanup (xfree, objname);
604 probes = collect_probes (objname, provider, probe_name, pops);
605 make_cleanup (VEC_cleanup (probe_p), &probes);
609 const struct probe_ops *po;
612 /* If the probe_ops is NULL, it means the user has requested a "simple"
613 `info probes', i.e., she wants to print all information about all
614 probes. For that, we have to identify how many extra fields we will
615 need to add in the ui_out table.
617 To do that, we iterate over all probe_ops, querying each one about
618 its extra fields, and incrementing `ui_out_extra_fields' to reflect
619 that number. But note that we ignore the probe_ops for which no probes
620 are defined with the given search criteria. */
622 for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix)
623 if (exists_probe_with_pops (probes, po))
624 ui_out_extra_fields += get_number_extra_fields (po);
627 ui_out_extra_fields = get_number_extra_fields (pops);
629 make_cleanup_ui_out_table_begin_end (current_uiout,
630 5 + ui_out_extra_fields,
631 VEC_length (bound_probe_s, probes),
634 if (!VEC_empty (bound_probe_s, probes))
635 qsort (VEC_address (bound_probe_s, probes),
636 VEC_length (bound_probe_s, probes),
637 sizeof (bound_probe_s), compare_probes);
639 /* What's the size of an address in our architecture? */
640 size_addr = gdbarch_addr_bit (gdbarch) == 64 ? 18 : 10;
642 /* Determining the maximum size of each field (`type', `provider',
643 `name' and `objname'). */
644 for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i)
646 const char *probe_type = probe->probe->pops->type_name (probe->probe);
648 size_type = std::max (strlen (probe_type), size_type);
649 size_name = std::max (strlen (probe->probe->name), size_name);
650 size_provider = std::max (strlen (probe->probe->provider), size_provider);
651 size_objname = std::max (strlen (objfile_name (probe->objfile)),
655 current_uiout->table_header (size_type, ui_left, "type", _("Type"));
656 current_uiout->table_header (size_provider, ui_left, "provider",
658 current_uiout->table_header (size_name, ui_left, "name", _("Name"));
659 current_uiout->table_header (size_addr, ui_left, "addr", _("Where"));
663 const struct probe_ops *po;
666 /* We have to generate the table header for each new probe type
667 that we will print. Note that this excludes probe types not
668 having any defined probe with the search criteria. */
669 for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po); ++ix)
670 if (exists_probe_with_pops (probes, po))
671 gen_ui_out_table_header_info (probes, po);
674 gen_ui_out_table_header_info (probes, pops);
676 current_uiout->table_header (size_objname, ui_left, "object", _("Object"));
677 current_uiout->table_body ();
679 for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i)
681 struct cleanup *inner;
682 const char *probe_type = probe->probe->pops->type_name (probe->probe);
684 inner = make_cleanup_ui_out_tuple_begin_end (current_uiout, "probe");
686 current_uiout->field_string ("type",probe_type);
687 current_uiout->field_string ("provider", probe->probe->provider);
688 current_uiout->field_string ("name", probe->probe->name);
689 current_uiout->field_core_addr (
690 "addr", probe->probe->arch,
691 get_probe_address (probe->probe, probe->objfile));
695 const struct probe_ops *po;
698 for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, po);
700 if (probe->probe->pops == po)
701 print_ui_out_info (probe->probe);
702 else if (exists_probe_with_pops (probes, po))
703 print_ui_out_not_applicables (po);
706 print_ui_out_info (probe->probe);
708 current_uiout->field_string ("object",
709 objfile_name (probe->objfile));
710 current_uiout->text ("\n");
715 any_found = !VEC_empty (bound_probe_s, probes);
716 do_cleanups (cleanup);
719 current_uiout->message (_("No probes matched.\n"));
722 /* Implementation of the `info probes' command. */
725 info_probes_command (char *arg, int from_tty)
727 info_probes_for_ops (arg, from_tty, NULL);
730 /* Implementation of the `enable probes' command. */
733 enable_probes_command (char *arg, int from_tty)
735 char *provider, *probe_name = NULL, *objname = NULL;
736 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
737 VEC (bound_probe_s) *probes;
738 struct bound_probe *probe;
741 parse_probe_linespec ((const char *) arg, &provider, &probe_name, &objname);
742 make_cleanup (xfree, provider);
743 make_cleanup (xfree, probe_name);
744 make_cleanup (xfree, objname);
746 probes = collect_probes (objname, provider, probe_name, NULL);
747 if (VEC_empty (bound_probe_s, probes))
749 current_uiout->message (_("No probes matched.\n"));
750 do_cleanups (cleanup);
754 /* Enable the selected probes, provided their backends support the
755 notion of enabling a probe. */
756 for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i)
758 const struct probe_ops *pops = probe->probe->pops;
760 if (pops->enable_probe != NULL)
762 pops->enable_probe (probe->probe);
763 current_uiout->message (_("Probe %s:%s enabled.\n"),
764 probe->probe->provider, probe->probe->name);
767 current_uiout->message (_("Probe %s:%s cannot be enabled.\n"),
768 probe->probe->provider, probe->probe->name);
771 do_cleanups (cleanup);
774 /* Implementation of the `disable probes' command. */
777 disable_probes_command (char *arg, int from_tty)
779 char *provider, *probe_name = NULL, *objname = NULL;
780 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
781 VEC (bound_probe_s) *probes;
782 struct bound_probe *probe;
785 parse_probe_linespec ((const char *) arg, &provider, &probe_name, &objname);
786 make_cleanup (xfree, provider);
787 make_cleanup (xfree, probe_name);
788 make_cleanup (xfree, objname);
790 probes = collect_probes (objname, provider, probe_name, NULL /* pops */);
791 if (VEC_empty (bound_probe_s, probes))
793 current_uiout->message (_("No probes matched.\n"));
794 do_cleanups (cleanup);
798 /* Disable the selected probes, provided their backends support the
799 notion of enabling a probe. */
800 for (i = 0; VEC_iterate (bound_probe_s, probes, i, probe); ++i)
802 const struct probe_ops *pops = probe->probe->pops;
804 if (pops->disable_probe != NULL)
806 pops->disable_probe (probe->probe);
807 current_uiout->message (_("Probe %s:%s disabled.\n"),
808 probe->probe->provider, probe->probe->name);
811 current_uiout->message (_("Probe %s:%s cannot be disabled.\n"),
812 probe->probe->provider, probe->probe->name);
815 do_cleanups (cleanup);
818 /* See comments in probe.h. */
821 get_probe_address (struct probe *probe, struct objfile *objfile)
823 return probe->pops->get_probe_address (probe, objfile);
826 /* See comments in probe.h. */
829 get_probe_argument_count (struct probe *probe, struct frame_info *frame)
831 return probe->pops->get_probe_argument_count (probe, frame);
834 /* See comments in probe.h. */
837 can_evaluate_probe_arguments (struct probe *probe)
839 return probe->pops->can_evaluate_probe_arguments (probe);
842 /* See comments in probe.h. */
845 evaluate_probe_argument (struct probe *probe, unsigned n,
846 struct frame_info *frame)
848 return probe->pops->evaluate_probe_argument (probe, n, frame);
851 /* See comments in probe.h. */
854 probe_safe_evaluate_at_pc (struct frame_info *frame, unsigned n)
856 struct bound_probe probe;
859 probe = find_probe_by_pc (get_frame_pc (frame));
863 n_args = get_probe_argument_count (probe.probe, frame);
867 return evaluate_probe_argument (probe.probe, n, frame);
870 /* See comment in probe.h. */
872 const struct probe_ops *
873 probe_linespec_to_ops (const char **linespecp)
876 const struct probe_ops *probe_ops;
878 for (ix = 0; VEC_iterate (probe_ops_cp, all_probe_ops, ix, probe_ops); ix++)
879 if (probe_ops->is_linespec (linespecp))
885 /* See comment in probe.h. */
888 probe_is_linespec_by_keyword (const char **linespecp, const char *const *keywords)
890 const char *s = *linespecp;
891 const char *const *csp;
893 for (csp = keywords; *csp; csp++)
895 const char *keyword = *csp;
896 size_t len = strlen (keyword);
898 if (strncmp (s, keyword, len) == 0 && isspace (s[len]))
900 *linespecp += len + 1;
908 /* Implementation of `is_linespec' method for `struct probe_ops'. */
911 probe_any_is_linespec (const char **linespecp)
913 static const char *const keywords[] = { "-p", "-probe", NULL };
915 return probe_is_linespec_by_keyword (linespecp, keywords);
918 /* Dummy method used for `probe_ops_any'. */
921 probe_any_get_probes (VEC (probe_p) **probesp, struct objfile *objfile)
923 /* No probes can be provided by this dummy backend. */
926 /* Operations associated with a generic probe. */
928 const struct probe_ops probe_ops_any =
930 probe_any_is_linespec,
931 probe_any_get_probes,
934 /* See comments in probe.h. */
936 struct cmd_list_element **
937 info_probes_cmdlist_get (void)
939 static struct cmd_list_element *info_probes_cmdlist;
941 if (info_probes_cmdlist == NULL)
942 add_prefix_cmd ("probes", class_info, info_probes_command,
944 Show available static probes.\n\
945 Usage: info probes [all|TYPE [ARGS]]\n\
946 TYPE specifies the type of the probe, and can be one of the following:\n\
948 If you specify TYPE, there may be additional arguments needed by the\n\
950 If you do not specify any argument, or specify `all', then the command\n\
951 will show information about all types of probes."),
952 &info_probes_cmdlist, "info probes ",
953 0/*allow-unknown*/, &infolist);
955 return &info_probes_cmdlist;
960 /* This is called to compute the value of one of the $_probe_arg*
961 convenience variables. */
963 static struct value *
964 compute_probe_arg (struct gdbarch *arch, struct internalvar *ivar,
967 struct frame_info *frame = get_selected_frame (_("No frame selected"));
968 CORE_ADDR pc = get_frame_pc (frame);
969 int sel = (int) (uintptr_t) data;
970 struct bound_probe pc_probe;
971 const struct sym_probe_fns *pc_probe_fns;
974 /* SEL == -1 means "_probe_argc". */
975 gdb_assert (sel >= -1);
977 pc_probe = find_probe_by_pc (pc);
978 if (pc_probe.probe == NULL)
979 error (_("No probe at PC %s"), core_addr_to_string (pc));
981 n_args = get_probe_argument_count (pc_probe.probe, frame);
983 return value_from_longest (builtin_type (arch)->builtin_int, n_args);
986 error (_("Invalid probe argument %d -- probe has %u arguments available"),
989 return evaluate_probe_argument (pc_probe.probe, sel, frame);
992 /* This is called to compile one of the $_probe_arg* convenience
993 variables into an agent expression. */
996 compile_probe_arg (struct internalvar *ivar, struct agent_expr *expr,
997 struct axs_value *value, void *data)
999 CORE_ADDR pc = expr->scope;
1000 int sel = (int) (uintptr_t) data;
1001 struct bound_probe pc_probe;
1002 const struct sym_probe_fns *pc_probe_fns;
1004 struct frame_info *frame = get_selected_frame (NULL);
1006 /* SEL == -1 means "_probe_argc". */
1007 gdb_assert (sel >= -1);
1009 pc_probe = find_probe_by_pc (pc);
1010 if (pc_probe.probe == NULL)
1011 error (_("No probe at PC %s"), core_addr_to_string (pc));
1013 n_args = get_probe_argument_count (pc_probe.probe, frame);
1017 value->kind = axs_rvalue;
1018 value->type = builtin_type (expr->gdbarch)->builtin_int;
1019 ax_const_l (expr, n_args);
1023 gdb_assert (sel >= 0);
1025 error (_("Invalid probe argument %d -- probe has %d arguments available"),
1028 pc_probe.probe->pops->compile_to_ax (pc_probe.probe, expr, value, sel);
1031 static const struct internalvar_funcs probe_funcs =
1039 VEC (probe_ops_cp) *all_probe_ops;
1041 void _initialize_probe (void);
1044 _initialize_probe (void)
1046 VEC_safe_push (probe_ops_cp, all_probe_ops, &probe_ops_any);
1048 create_internalvar_type_lazy ("_probe_argc", &probe_funcs,
1049 (void *) (uintptr_t) -1);
1050 create_internalvar_type_lazy ("_probe_arg0", &probe_funcs,
1051 (void *) (uintptr_t) 0);
1052 create_internalvar_type_lazy ("_probe_arg1", &probe_funcs,
1053 (void *) (uintptr_t) 1);
1054 create_internalvar_type_lazy ("_probe_arg2", &probe_funcs,
1055 (void *) (uintptr_t) 2);
1056 create_internalvar_type_lazy ("_probe_arg3", &probe_funcs,
1057 (void *) (uintptr_t) 3);
1058 create_internalvar_type_lazy ("_probe_arg4", &probe_funcs,
1059 (void *) (uintptr_t) 4);
1060 create_internalvar_type_lazy ("_probe_arg5", &probe_funcs,
1061 (void *) (uintptr_t) 5);
1062 create_internalvar_type_lazy ("_probe_arg6", &probe_funcs,
1063 (void *) (uintptr_t) 6);
1064 create_internalvar_type_lazy ("_probe_arg7", &probe_funcs,
1065 (void *) (uintptr_t) 7);
1066 create_internalvar_type_lazy ("_probe_arg8", &probe_funcs,
1067 (void *) (uintptr_t) 8);
1068 create_internalvar_type_lazy ("_probe_arg9", &probe_funcs,
1069 (void *) (uintptr_t) 9);
1070 create_internalvar_type_lazy ("_probe_arg10", &probe_funcs,
1071 (void *) (uintptr_t) 10);
1072 create_internalvar_type_lazy ("_probe_arg11", &probe_funcs,
1073 (void *) (uintptr_t) 11);
1075 add_cmd ("all", class_info, info_probes_command,
1077 Show information about all type of probes."),
1078 info_probes_cmdlist_get ());
1080 add_cmd ("probes", class_breakpoint, enable_probes_command, _("\
1082 Usage: enable probes [PROVIDER [NAME [OBJECT]]]\n\
1083 Each argument is a regular expression, used to select probes.\n\
1084 PROVIDER matches probe provider names.\n\
1085 NAME matches the probe names.\n\
1086 OBJECT matches the executable or shared library name.\n\
1087 If you do not specify any argument then the command will enable\n\
1088 all defined probes."),
1091 add_cmd ("probes", class_breakpoint, disable_probes_command, _("\
1093 Usage: disable probes [PROVIDER [NAME [OBJECT]]]\n\
1094 Each argument is a regular expression, used to select probes.\n\
1095 PROVIDER matches probe provider names.\n\
1096 NAME matches the probe names.\n\
1097 OBJECT matches the executable or shared library name.\n\
1098 If you do not specify any argument then the command will disable\n\
1099 all defined probes."),