Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
4de283e4 | 59 | #include "gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
d3ce09f5 | 70 | |
1042e4c0 | 71 | /* readline include files */ |
073bbbb0 | 72 | #include "readline/tilde.h" |
1042e4c0 SS |
73 | |
74 | /* readline defines this. */ | |
75 | #undef savestring | |
76 | ||
034dad6f | 77 | #include "mi/mi-common.h" |
6dddc817 | 78 | #include "extension.h" |
325fac50 | 79 | #include <algorithm> |
5ed8105e | 80 | #include "progspace-and-thread.h" |
268a13a5 TT |
81 | #include "gdbsupport/array-view.h" |
82 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 83 | |
4a64f543 | 84 | /* Prototypes for local functions. */ |
c906108c | 85 | |
896b6bda | 86 | static void map_breakpoint_numbers (const char *, |
48649e1b | 87 | gdb::function_view<void (breakpoint *)>); |
c906108c | 88 | |
348d480f PA |
89 | static void breakpoint_re_set_default (struct breakpoint *); |
90 | ||
f00aae0f KS |
91 | static void |
92 | create_sals_from_location_default (const struct event_location *location, | |
93 | struct linespec_result *canonical, | |
94 | enum bptype type_wanted); | |
983af33b SDJ |
95 | |
96 | static void create_breakpoints_sal_default (struct gdbarch *, | |
97 | struct linespec_result *, | |
e1e01040 PA |
98 | gdb::unique_xmalloc_ptr<char>, |
99 | gdb::unique_xmalloc_ptr<char>, | |
100 | enum bptype, | |
983af33b SDJ |
101 | enum bpdisp, int, int, |
102 | int, | |
103 | const struct breakpoint_ops *, | |
44f238bb | 104 | int, int, int, unsigned); |
983af33b | 105 | |
6c5b2ebe PA |
106 | static std::vector<symtab_and_line> decode_location_default |
107 | (struct breakpoint *b, const struct event_location *location, | |
108 | struct program_space *search_pspace); | |
983af33b | 109 | |
a6535de1 TT |
110 | static int can_use_hardware_watchpoint |
111 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 112 | |
a14ed312 | 113 | static void mention (struct breakpoint *); |
c906108c | 114 | |
348d480f PA |
115 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
116 | enum bptype, | |
c0a91b2b | 117 | const struct breakpoint_ops *); |
3742cc8b YQ |
118 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
119 | const struct symtab_and_line *); | |
120 | ||
4a64f543 MS |
121 | /* This function is used in gdbtk sources and thus can not be made |
122 | static. */ | |
63c252f8 | 123 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 124 | struct symtab_and_line, |
c0a91b2b TT |
125 | enum bptype, |
126 | const struct breakpoint_ops *); | |
c906108c | 127 | |
06edf0c0 PA |
128 | static struct breakpoint * |
129 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
130 | enum bptype type, | |
a1aa2221 LM |
131 | const struct breakpoint_ops *ops, |
132 | int loc_enabled); | |
06edf0c0 | 133 | |
76897487 KB |
134 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
135 | ||
a6d9a66e UW |
136 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
137 | CORE_ADDR bpaddr, | |
88f7da05 | 138 | enum bptype bptype); |
76897487 | 139 | |
6c95b8df PA |
140 | static void describe_other_breakpoints (struct gdbarch *, |
141 | struct program_space *, CORE_ADDR, | |
5af949e3 | 142 | struct obj_section *, int); |
c906108c | 143 | |
85d721b8 PA |
144 | static int watchpoint_locations_match (struct bp_location *loc1, |
145 | struct bp_location *loc2); | |
146 | ||
f1310107 | 147 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 148 | const struct address_space *aspace, |
f1310107 TJB |
149 | CORE_ADDR addr); |
150 | ||
d35ae833 | 151 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 152 | const address_space *, |
d35ae833 PA |
153 | CORE_ADDR, int); |
154 | ||
834c0d03 | 155 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 156 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 157 | |
e514a9d6 | 158 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 159 | |
a14ed312 | 160 | static int hw_breakpoint_used_count (void); |
c906108c | 161 | |
a1398e0c PA |
162 | static int hw_watchpoint_use_count (struct breakpoint *); |
163 | ||
164 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
165 | enum bptype type, | |
166 | int *other_type_used); | |
c906108c | 167 | |
816338b5 SS |
168 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
169 | int count); | |
c906108c | 170 | |
fe3f5fa8 | 171 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
172 | static void incref_bp_location (struct bp_location *loc); |
173 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 174 | |
39d61571 | 175 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 176 | |
44702360 PA |
177 | /* update_global_location_list's modes of operation wrt to whether to |
178 | insert locations now. */ | |
179 | enum ugll_insert_mode | |
180 | { | |
181 | /* Don't insert any breakpoint locations into the inferior, only | |
182 | remove already-inserted locations that no longer should be | |
183 | inserted. Functions that delete a breakpoint or breakpoints | |
184 | should specify this mode, so that deleting a breakpoint doesn't | |
185 | have the side effect of inserting the locations of other | |
186 | breakpoints that are marked not-inserted, but should_be_inserted | |
187 | returns true on them. | |
188 | ||
189 | This behavior is useful is situations close to tear-down -- e.g., | |
190 | after an exec, while the target still has execution, but | |
191 | breakpoint shadows of the previous executable image should *NOT* | |
192 | be restored to the new image; or before detaching, where the | |
193 | target still has execution and wants to delete breakpoints from | |
194 | GDB's lists, and all breakpoints had already been removed from | |
195 | the inferior. */ | |
196 | UGLL_DONT_INSERT, | |
197 | ||
a25a5a45 PA |
198 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
199 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
200 | UGLL_MAY_INSERT, |
201 | ||
a25a5a45 PA |
202 | /* Insert locations now, irrespective of |
203 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
204 | stopped right now, and the user did "continue". We need to | |
205 | insert breakpoints _before_ resuming the target, but | |
206 | UGLL_MAY_INSERT wouldn't insert them, because | |
207 | breakpoints_should_be_inserted_now returns false at that point, | |
208 | as no thread is running yet. */ | |
04086b45 | 209 | UGLL_INSERT |
44702360 PA |
210 | }; |
211 | ||
212 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 213 | |
44702360 | 214 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 215 | |
74960c60 | 216 | static void insert_breakpoint_locations (void); |
a5606eee | 217 | |
0b39b52e | 218 | static void trace_pass_command (const char *, int); |
1042e4c0 | 219 | |
558a9d82 YQ |
220 | static void set_tracepoint_count (int num); |
221 | ||
f2478a7e | 222 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 223 | |
b775012e LM |
224 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
225 | ||
983af33b SDJ |
226 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
227 | otherwise. */ | |
228 | ||
229 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 230 | |
2060206e PA |
231 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
232 | that are implemented on top of software or hardware breakpoints | |
233 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
234 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
235 | ||
236 | /* Internal breakpoints class type. */ | |
06edf0c0 | 237 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
238 | |
239 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
240 | static struct breakpoint_ops momentary_breakpoint_ops; |
241 | ||
2060206e PA |
242 | /* The breakpoint_ops structure to be used in regular user created |
243 | breakpoints. */ | |
244 | struct breakpoint_ops bkpt_breakpoint_ops; | |
245 | ||
55aa24fb SDJ |
246 | /* Breakpoints set on probes. */ |
247 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
248 | ||
bac7c5cf GB |
249 | /* Tracepoints set on probes. */ |
250 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
251 | ||
e7e0cddf | 252 | /* Dynamic printf class type. */ |
c5867ab6 | 253 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 254 | |
d3ce09f5 SS |
255 | /* The style in which to perform a dynamic printf. This is a user |
256 | option because different output options have different tradeoffs; | |
257 | if GDB does the printing, there is better error handling if there | |
258 | is a problem with any of the arguments, but using an inferior | |
259 | function lets you have special-purpose printers and sending of | |
260 | output to the same place as compiled-in print functions. */ | |
261 | ||
262 | static const char dprintf_style_gdb[] = "gdb"; | |
263 | static const char dprintf_style_call[] = "call"; | |
264 | static const char dprintf_style_agent[] = "agent"; | |
265 | static const char *const dprintf_style_enums[] = { | |
266 | dprintf_style_gdb, | |
267 | dprintf_style_call, | |
268 | dprintf_style_agent, | |
269 | NULL | |
270 | }; | |
271 | static const char *dprintf_style = dprintf_style_gdb; | |
272 | ||
273 | /* The function to use for dynamic printf if the preferred style is to | |
274 | call into the inferior. The value is simply a string that is | |
275 | copied into the command, so it can be anything that GDB can | |
276 | evaluate to a callable address, not necessarily a function name. */ | |
277 | ||
bde6261a | 278 | static char *dprintf_function; |
d3ce09f5 SS |
279 | |
280 | /* The channel to use for dynamic printf if the preferred style is to | |
281 | call into the inferior; if a nonempty string, it will be passed to | |
282 | the call as the first argument, with the format string as the | |
283 | second. As with the dprintf function, this can be anything that | |
284 | GDB knows how to evaluate, so in addition to common choices like | |
285 | "stderr", this could be an app-specific expression like | |
286 | "mystreams[curlogger]". */ | |
287 | ||
bde6261a | 288 | static char *dprintf_channel; |
d3ce09f5 SS |
289 | |
290 | /* True if dprintf commands should continue to operate even if GDB | |
291 | has disconnected. */ | |
491144b5 | 292 | static bool disconnected_dprintf = true; |
d3ce09f5 | 293 | |
5cea2a26 PA |
294 | struct command_line * |
295 | breakpoint_commands (struct breakpoint *b) | |
296 | { | |
d1b0a7bf | 297 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 298 | } |
3daf8fe5 | 299 | |
f3b1572e PA |
300 | /* Flag indicating that a command has proceeded the inferior past the |
301 | current breakpoint. */ | |
302 | ||
491144b5 | 303 | static bool breakpoint_proceeded; |
f3b1572e | 304 | |
956a9fb9 | 305 | const char * |
2cec12e5 AR |
306 | bpdisp_text (enum bpdisp disp) |
307 | { | |
4a64f543 MS |
308 | /* NOTE: the following values are a part of MI protocol and |
309 | represent values of 'disp' field returned when inferior stops at | |
310 | a breakpoint. */ | |
bc043ef3 | 311 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 312 | |
2cec12e5 AR |
313 | return bpdisps[(int) disp]; |
314 | } | |
c906108c | 315 | |
4a64f543 | 316 | /* Prototypes for exported functions. */ |
c906108c | 317 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 318 | if such is available. */ |
c906108c SS |
319 | static int can_use_hw_watchpoints; |
320 | ||
920d2a44 AC |
321 | static void |
322 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
323 | struct cmd_list_element *c, | |
324 | const char *value) | |
325 | { | |
3e43a32a MS |
326 | fprintf_filtered (file, |
327 | _("Debugger's willingness to use " | |
328 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
329 | value); |
330 | } | |
331 | ||
fa8d40ab JJ |
332 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
333 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 334 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
335 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
336 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
337 | static void |
338 | show_pending_break_support (struct ui_file *file, int from_tty, | |
339 | struct cmd_list_element *c, | |
340 | const char *value) | |
341 | { | |
3e43a32a MS |
342 | fprintf_filtered (file, |
343 | _("Debugger's behavior regarding " | |
344 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
345 | value); |
346 | } | |
fa8d40ab | 347 | |
491144b5 | 348 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 349 | set with "break" but falling in read-only memory. |
491144b5 | 350 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 351 | use hardware breakpoints. */ |
491144b5 | 352 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
353 | static void |
354 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
355 | struct cmd_list_element *c, | |
356 | const char *value) | |
357 | { | |
3e43a32a MS |
358 | fprintf_filtered (file, |
359 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
360 | value); |
361 | } | |
362 | ||
a25a5a45 PA |
363 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
364 | stopped, and immediately inserts any new breakpoints as soon as | |
365 | they're created. If off (default), GDB keeps breakpoints off of | |
366 | the target as long as possible. That is, it delays inserting | |
367 | breakpoints until the next resume, and removes them again when the | |
368 | target fully stops. This is a bit safer in case GDB crashes while | |
369 | processing user input. */ | |
491144b5 | 370 | static bool always_inserted_mode = false; |
72d0e2c5 | 371 | |
33e5cbd6 | 372 | static void |
74960c60 | 373 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 374 | struct cmd_list_element *c, const char *value) |
74960c60 | 375 | { |
a25a5a45 PA |
376 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
377 | value); | |
74960c60 VP |
378 | } |
379 | ||
b57bacec PA |
380 | /* See breakpoint.h. */ |
381 | ||
33e5cbd6 | 382 | int |
a25a5a45 | 383 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 384 | { |
a25a5a45 PA |
385 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
386 | { | |
387 | /* If breakpoints are global, they should be inserted even if no | |
388 | thread under gdb's control is running, or even if there are | |
389 | no threads under GDB's control yet. */ | |
390 | return 1; | |
391 | } | |
5b6d1e4f | 392 | else |
a25a5a45 | 393 | { |
a25a5a45 PA |
394 | if (always_inserted_mode) |
395 | { | |
396 | /* The user wants breakpoints inserted even if all threads | |
397 | are stopped. */ | |
398 | return 1; | |
399 | } | |
400 | ||
5b6d1e4f PA |
401 | for (inferior *inf : all_inferiors ()) |
402 | if (inf->has_execution () | |
403 | && threads_are_executing (inf->process_target ())) | |
404 | return 1; | |
372316f1 PA |
405 | |
406 | /* Don't remove breakpoints yet if, even though all threads are | |
407 | stopped, we still have events to process. */ | |
08036331 | 408 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
409 | if (tp->resumed |
410 | && tp->suspend.waitstatus_pending_p) | |
411 | return 1; | |
a25a5a45 PA |
412 | } |
413 | return 0; | |
33e5cbd6 | 414 | } |
765dc015 | 415 | |
b775012e LM |
416 | static const char condition_evaluation_both[] = "host or target"; |
417 | ||
418 | /* Modes for breakpoint condition evaluation. */ | |
419 | static const char condition_evaluation_auto[] = "auto"; | |
420 | static const char condition_evaluation_host[] = "host"; | |
421 | static const char condition_evaluation_target[] = "target"; | |
422 | static const char *const condition_evaluation_enums[] = { | |
423 | condition_evaluation_auto, | |
424 | condition_evaluation_host, | |
425 | condition_evaluation_target, | |
426 | NULL | |
427 | }; | |
428 | ||
429 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
430 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
431 | ||
432 | /* Global that we use to display information to the user (gets its value from | |
433 | condition_evaluation_mode_1. */ | |
434 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
435 | ||
436 | /* Translate a condition evaluation mode MODE into either "host" | |
437 | or "target". This is used mostly to translate from "auto" to the | |
438 | real setting that is being used. It returns the translated | |
439 | evaluation mode. */ | |
440 | ||
441 | static const char * | |
442 | translate_condition_evaluation_mode (const char *mode) | |
443 | { | |
444 | if (mode == condition_evaluation_auto) | |
445 | { | |
446 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
447 | return condition_evaluation_target; | |
448 | else | |
449 | return condition_evaluation_host; | |
450 | } | |
451 | else | |
452 | return mode; | |
453 | } | |
454 | ||
455 | /* Discovers what condition_evaluation_auto translates to. */ | |
456 | ||
457 | static const char * | |
458 | breakpoint_condition_evaluation_mode (void) | |
459 | { | |
460 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
461 | } | |
462 | ||
463 | /* Return true if GDB should evaluate breakpoint conditions or false | |
464 | otherwise. */ | |
465 | ||
466 | static int | |
467 | gdb_evaluates_breakpoint_condition_p (void) | |
468 | { | |
469 | const char *mode = breakpoint_condition_evaluation_mode (); | |
470 | ||
471 | return (mode == condition_evaluation_host); | |
472 | } | |
473 | ||
c906108c SS |
474 | /* Are we executing breakpoint commands? */ |
475 | static int executing_breakpoint_commands; | |
476 | ||
c02f5703 MS |
477 | /* Are overlay event breakpoints enabled? */ |
478 | static int overlay_events_enabled; | |
479 | ||
e09342b5 | 480 | /* See description in breakpoint.h. */ |
491144b5 | 481 | bool target_exact_watchpoints = false; |
e09342b5 | 482 | |
c906108c | 483 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 484 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 485 | current breakpoint. */ |
c906108c | 486 | |
5c44784c | 487 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 488 | |
5c44784c JM |
489 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
490 | for (B = breakpoint_chain; \ | |
491 | B ? (TMP=B->next, 1): 0; \ | |
492 | B = TMP) | |
c906108c | 493 | |
4a64f543 MS |
494 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
495 | not provided so update_global_location_list must not be called | |
496 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 497 | |
876fa593 | 498 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
499 | for (BP_TMP = bp_locations; \ |
500 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 501 | BP_TMP++) |
7cc221ef | 502 | |
b775012e LM |
503 | /* Iterates through locations with address ADDRESS for the currently selected |
504 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
505 | to where the loop should start from. | |
506 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
507 | appropriate location to start with. */ | |
508 | ||
509 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
510 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
511 | BP_LOCP_TMP = BP_LOCP_START; \ | |
512 | BP_LOCP_START \ | |
f5336ca5 | 513 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
514 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
515 | BP_LOCP_TMP++) | |
516 | ||
1042e4c0 SS |
517 | /* Iterator for tracepoints only. */ |
518 | ||
519 | #define ALL_TRACEPOINTS(B) \ | |
520 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 521 | if (is_tracepoint (B)) |
1042e4c0 | 522 | |
7cc221ef | 523 | /* Chains of all breakpoints defined. */ |
c906108c | 524 | |
81e6b8eb | 525 | static struct breakpoint *breakpoint_chain; |
c906108c | 526 | |
39ef2f62 | 527 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 528 | |
f5336ca5 | 529 | static struct bp_location **bp_locations; |
876fa593 | 530 | |
f5336ca5 | 531 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 532 | |
f5336ca5 | 533 | static unsigned bp_locations_count; |
876fa593 | 534 | |
4a64f543 | 535 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 536 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 537 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 538 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 539 | an address you need to read. */ |
876fa593 | 540 | |
f5336ca5 | 541 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 542 | |
4a64f543 MS |
543 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
544 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
545 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
546 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 547 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 548 | |
f5336ca5 | 549 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 550 | |
4a64f543 | 551 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
552 | from the bp_locations array, but for which a hit may still be |
553 | reported by a target. */ | |
1123588c | 554 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 555 | |
c906108c SS |
556 | /* Number of last breakpoint made. */ |
557 | ||
95a42b64 TT |
558 | static int breakpoint_count; |
559 | ||
86b17b60 PA |
560 | /* The value of `breakpoint_count' before the last command that |
561 | created breakpoints. If the last (break-like) command created more | |
562 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
563 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
564 | static int prev_breakpoint_count; | |
c906108c | 565 | |
1042e4c0 SS |
566 | /* Number of last tracepoint made. */ |
567 | ||
95a42b64 | 568 | static int tracepoint_count; |
1042e4c0 | 569 | |
6149aea9 PA |
570 | static struct cmd_list_element *breakpoint_set_cmdlist; |
571 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 572 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 573 | |
badd37ce SDJ |
574 | /* See declaration at breakpoint.h. */ |
575 | ||
576 | struct breakpoint * | |
577 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
578 | void *user_data) | |
579 | { | |
580 | struct breakpoint *b = NULL; | |
581 | ||
582 | ALL_BREAKPOINTS (b) | |
583 | { | |
584 | if (func (b, user_data) != 0) | |
585 | break; | |
586 | } | |
587 | ||
588 | return b; | |
589 | } | |
590 | ||
468d015d JJ |
591 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
592 | static int | |
593 | breakpoint_enabled (struct breakpoint *b) | |
594 | { | |
0d381245 | 595 | return (b->enable_state == bp_enabled); |
468d015d JJ |
596 | } |
597 | ||
c906108c SS |
598 | /* Set breakpoint count to NUM. */ |
599 | ||
95a42b64 | 600 | static void |
fba45db2 | 601 | set_breakpoint_count (int num) |
c906108c | 602 | { |
86b17b60 | 603 | prev_breakpoint_count = breakpoint_count; |
c906108c | 604 | breakpoint_count = num; |
4fa62494 | 605 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
606 | } |
607 | ||
86b17b60 PA |
608 | /* Used by `start_rbreak_breakpoints' below, to record the current |
609 | breakpoint count before "rbreak" creates any breakpoint. */ | |
610 | static int rbreak_start_breakpoint_count; | |
611 | ||
95a42b64 TT |
612 | /* Called at the start an "rbreak" command to record the first |
613 | breakpoint made. */ | |
86b17b60 | 614 | |
c80049d3 | 615 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 616 | { |
86b17b60 | 617 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
618 | } |
619 | ||
620 | /* Called at the end of an "rbreak" command to record the last | |
621 | breakpoint made. */ | |
86b17b60 | 622 | |
c80049d3 | 623 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 624 | { |
86b17b60 | 625 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
626 | } |
627 | ||
4a64f543 | 628 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
629 | |
630 | void | |
fba45db2 | 631 | clear_breakpoint_hit_counts (void) |
c906108c SS |
632 | { |
633 | struct breakpoint *b; | |
634 | ||
635 | ALL_BREAKPOINTS (b) | |
636 | b->hit_count = 0; | |
637 | } | |
638 | ||
c906108c | 639 | \f |
48cb2d85 VP |
640 | /* Return the breakpoint with the specified number, or NULL |
641 | if the number does not refer to an existing breakpoint. */ | |
642 | ||
643 | struct breakpoint * | |
644 | get_breakpoint (int num) | |
645 | { | |
646 | struct breakpoint *b; | |
647 | ||
648 | ALL_BREAKPOINTS (b) | |
649 | if (b->number == num) | |
650 | return b; | |
651 | ||
652 | return NULL; | |
653 | } | |
5c44784c | 654 | |
c906108c | 655 | \f |
adc36818 | 656 | |
b775012e LM |
657 | /* Mark locations as "conditions have changed" in case the target supports |
658 | evaluating conditions on its side. */ | |
659 | ||
660 | static void | |
661 | mark_breakpoint_modified (struct breakpoint *b) | |
662 | { | |
663 | struct bp_location *loc; | |
664 | ||
665 | /* This is only meaningful if the target is | |
666 | evaluating conditions and if the user has | |
667 | opted for condition evaluation on the target's | |
668 | side. */ | |
669 | if (gdb_evaluates_breakpoint_condition_p () | |
670 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
671 | return; | |
672 | ||
673 | if (!is_breakpoint (b)) | |
674 | return; | |
675 | ||
676 | for (loc = b->loc; loc; loc = loc->next) | |
677 | loc->condition_changed = condition_modified; | |
678 | } | |
679 | ||
680 | /* Mark location as "conditions have changed" in case the target supports | |
681 | evaluating conditions on its side. */ | |
682 | ||
683 | static void | |
684 | mark_breakpoint_location_modified (struct bp_location *loc) | |
685 | { | |
686 | /* This is only meaningful if the target is | |
687 | evaluating conditions and if the user has | |
688 | opted for condition evaluation on the target's | |
689 | side. */ | |
690 | if (gdb_evaluates_breakpoint_condition_p () | |
691 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
692 | ||
693 | return; | |
694 | ||
695 | if (!is_breakpoint (loc->owner)) | |
696 | return; | |
697 | ||
698 | loc->condition_changed = condition_modified; | |
699 | } | |
700 | ||
701 | /* Sets the condition-evaluation mode using the static global | |
702 | condition_evaluation_mode. */ | |
703 | ||
704 | static void | |
eb4c3f4a | 705 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
706 | struct cmd_list_element *c) |
707 | { | |
b775012e LM |
708 | const char *old_mode, *new_mode; |
709 | ||
710 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
711 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
712 | { | |
713 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
714 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
715 | "Using host evaluation mode instead.")); | |
716 | return; | |
717 | } | |
718 | ||
719 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
720 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
721 | ||
abf1152a JK |
722 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
723 | settings was "auto". */ | |
724 | condition_evaluation_mode = condition_evaluation_mode_1; | |
725 | ||
b775012e LM |
726 | /* Only update the mode if the user picked a different one. */ |
727 | if (new_mode != old_mode) | |
728 | { | |
729 | struct bp_location *loc, **loc_tmp; | |
730 | /* If the user switched to a different evaluation mode, we | |
731 | need to synch the changes with the target as follows: | |
732 | ||
733 | "host" -> "target": Send all (valid) conditions to the target. | |
734 | "target" -> "host": Remove all the conditions from the target. | |
735 | */ | |
736 | ||
b775012e LM |
737 | if (new_mode == condition_evaluation_target) |
738 | { | |
739 | /* Mark everything modified and synch conditions with the | |
740 | target. */ | |
741 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
742 | mark_breakpoint_location_modified (loc); | |
743 | } | |
744 | else | |
745 | { | |
746 | /* Manually mark non-duplicate locations to synch conditions | |
747 | with the target. We do this to remove all the conditions the | |
748 | target knows about. */ | |
749 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
750 | if (is_breakpoint (loc->owner) && loc->inserted) | |
751 | loc->needs_update = 1; | |
752 | } | |
753 | ||
754 | /* Do the update. */ | |
44702360 | 755 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
756 | } |
757 | ||
758 | return; | |
759 | } | |
760 | ||
761 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
762 | what "auto" is translating to. */ | |
763 | ||
764 | static void | |
765 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
766 | struct cmd_list_element *c, const char *value) | |
767 | { | |
768 | if (condition_evaluation_mode == condition_evaluation_auto) | |
769 | fprintf_filtered (file, | |
770 | _("Breakpoint condition evaluation " | |
771 | "mode is %s (currently %s).\n"), | |
772 | value, | |
773 | breakpoint_condition_evaluation_mode ()); | |
774 | else | |
775 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
776 | value); | |
777 | } | |
778 | ||
779 | /* A comparison function for bp_location AP and BP that is used by | |
780 | bsearch. This comparison function only cares about addresses, unlike | |
39ef2f62 | 781 | the more general bp_location_is_less_than function. */ |
b775012e LM |
782 | |
783 | static int | |
f5336ca5 | 784 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 785 | { |
9a3c8263 SM |
786 | const struct bp_location *a = *(const struct bp_location **) ap; |
787 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
788 | |
789 | if (a->address == b->address) | |
790 | return 0; | |
791 | else | |
792 | return ((a->address > b->address) - (a->address < b->address)); | |
793 | } | |
794 | ||
795 | /* Helper function to skip all bp_locations with addresses | |
796 | less than ADDRESS. It returns the first bp_location that | |
797 | is greater than or equal to ADDRESS. If none is found, just | |
798 | return NULL. */ | |
799 | ||
800 | static struct bp_location ** | |
801 | get_first_locp_gte_addr (CORE_ADDR address) | |
802 | { | |
803 | struct bp_location dummy_loc; | |
804 | struct bp_location *dummy_locp = &dummy_loc; | |
805 | struct bp_location **locp_found = NULL; | |
806 | ||
807 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
808 | dummy_loc.address = address; |
809 | ||
810 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 811 | locp_found = ((struct bp_location **) |
f5336ca5 | 812 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 813 | sizeof (struct bp_location **), |
f5336ca5 | 814 | bp_locations_compare_addrs)); |
b775012e LM |
815 | |
816 | /* Nothing was found, nothing left to do. */ | |
817 | if (locp_found == NULL) | |
818 | return NULL; | |
819 | ||
820 | /* We may have found a location that is at ADDRESS but is not the first in the | |
821 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 822 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
823 | && (*(locp_found - 1))->address == address) |
824 | locp_found--; | |
825 | ||
826 | return locp_found; | |
827 | } | |
828 | ||
adc36818 | 829 | void |
7a26bd4d | 830 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
831 | int from_tty) |
832 | { | |
3a5c3e22 PA |
833 | xfree (b->cond_string); |
834 | b->cond_string = NULL; | |
adc36818 | 835 | |
3a5c3e22 | 836 | if (is_watchpoint (b)) |
adc36818 | 837 | { |
3a5c3e22 PA |
838 | struct watchpoint *w = (struct watchpoint *) b; |
839 | ||
4d01a485 | 840 | w->cond_exp.reset (); |
3a5c3e22 PA |
841 | } |
842 | else | |
843 | { | |
844 | struct bp_location *loc; | |
845 | ||
846 | for (loc = b->loc; loc; loc = loc->next) | |
847 | { | |
4d01a485 | 848 | loc->cond.reset (); |
b775012e LM |
849 | |
850 | /* No need to free the condition agent expression | |
851 | bytecode (if we have one). We will handle this | |
852 | when we go through update_global_location_list. */ | |
3a5c3e22 | 853 | } |
adc36818 | 854 | } |
adc36818 PM |
855 | |
856 | if (*exp == 0) | |
857 | { | |
858 | if (from_tty) | |
859 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
860 | } | |
861 | else | |
862 | { | |
bbc13ae3 | 863 | const char *arg = exp; |
cc59ec59 | 864 | |
adc36818 PM |
865 | /* I don't know if it matters whether this is the string the user |
866 | typed in or the decompiled expression. */ | |
867 | b->cond_string = xstrdup (arg); | |
868 | b->condition_not_parsed = 0; | |
869 | ||
870 | if (is_watchpoint (b)) | |
871 | { | |
3a5c3e22 PA |
872 | struct watchpoint *w = (struct watchpoint *) b; |
873 | ||
699bd4cf | 874 | innermost_block_tracker tracker; |
adc36818 | 875 | arg = exp; |
699bd4cf | 876 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
adc36818 PM |
877 | if (*arg) |
878 | error (_("Junk at end of expression")); | |
699bd4cf | 879 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
880 | } |
881 | else | |
882 | { | |
3a5c3e22 PA |
883 | struct bp_location *loc; |
884 | ||
adc36818 PM |
885 | for (loc = b->loc; loc; loc = loc->next) |
886 | { | |
887 | arg = exp; | |
888 | loc->cond = | |
1bb9788d TT |
889 | parse_exp_1 (&arg, loc->address, |
890 | block_for_pc (loc->address), 0); | |
adc36818 PM |
891 | if (*arg) |
892 | error (_("Junk at end of expression")); | |
893 | } | |
894 | } | |
895 | } | |
b775012e LM |
896 | mark_breakpoint_modified (b); |
897 | ||
76727919 | 898 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
899 | } |
900 | ||
d55637df TT |
901 | /* Completion for the "condition" command. */ |
902 | ||
eb3ff9a5 | 903 | static void |
6f937416 | 904 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 905 | completion_tracker &tracker, |
6f937416 | 906 | const char *text, const char *word) |
d55637df | 907 | { |
6f937416 | 908 | const char *space; |
d55637df | 909 | |
f1735a53 TT |
910 | text = skip_spaces (text); |
911 | space = skip_to_space (text); | |
d55637df TT |
912 | if (*space == '\0') |
913 | { | |
914 | int len; | |
915 | struct breakpoint *b; | |
d55637df TT |
916 | |
917 | if (text[0] == '$') | |
918 | { | |
919 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
920 | if (!isdigit (text[1])) |
921 | complete_internalvar (tracker, &text[1]); | |
922 | return; | |
d55637df TT |
923 | } |
924 | ||
925 | /* We're completing the breakpoint number. */ | |
926 | len = strlen (text); | |
927 | ||
928 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
929 | { |
930 | char number[50]; | |
931 | ||
932 | xsnprintf (number, sizeof (number), "%d", b->number); | |
933 | ||
934 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 935 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 936 | } |
d55637df | 937 | |
eb3ff9a5 | 938 | return; |
d55637df TT |
939 | } |
940 | ||
941 | /* We're completing the expression part. */ | |
f1735a53 | 942 | text = skip_spaces (space); |
eb3ff9a5 | 943 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
944 | } |
945 | ||
c906108c SS |
946 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
947 | ||
948 | static void | |
0b39b52e | 949 | condition_command (const char *arg, int from_tty) |
c906108c | 950 | { |
52f0bd74 | 951 | struct breakpoint *b; |
0b39b52e | 952 | const char *p; |
52f0bd74 | 953 | int bnum; |
c906108c SS |
954 | |
955 | if (arg == 0) | |
e2e0b3e5 | 956 | error_no_arg (_("breakpoint number")); |
c906108c SS |
957 | |
958 | p = arg; | |
959 | bnum = get_number (&p); | |
5c44784c | 960 | if (bnum == 0) |
8a3fe4f8 | 961 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
962 | |
963 | ALL_BREAKPOINTS (b) | |
964 | if (b->number == bnum) | |
2f069f6f | 965 | { |
6dddc817 DE |
966 | /* Check if this breakpoint has a "stop" method implemented in an |
967 | extension language. This method and conditions entered into GDB | |
968 | from the CLI are mutually exclusive. */ | |
969 | const struct extension_language_defn *extlang | |
970 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
971 | ||
972 | if (extlang != NULL) | |
973 | { | |
974 | error (_("Only one stop condition allowed. There is currently" | |
975 | " a %s stop condition defined for this breakpoint."), | |
976 | ext_lang_capitalized_name (extlang)); | |
977 | } | |
2566ad2d | 978 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
979 | |
980 | if (is_breakpoint (b)) | |
44702360 | 981 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 982 | |
2f069f6f JB |
983 | return; |
984 | } | |
c906108c | 985 | |
8a3fe4f8 | 986 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
987 | } |
988 | ||
a7bdde9e VP |
989 | /* Check that COMMAND do not contain commands that are suitable |
990 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
991 | Throw if any such commands is found. */ |
992 | ||
a7bdde9e VP |
993 | static void |
994 | check_no_tracepoint_commands (struct command_line *commands) | |
995 | { | |
996 | struct command_line *c; | |
cc59ec59 | 997 | |
a7bdde9e VP |
998 | for (c = commands; c; c = c->next) |
999 | { | |
a7bdde9e | 1000 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1001 | error (_("The 'while-stepping' command can " |
1002 | "only be used for tracepoints")); | |
a7bdde9e | 1003 | |
12973681 TT |
1004 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1005 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1006 | |
1007 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1008 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1009 | command directly. */ |
1010 | if (strstr (c->line, "collect ") == c->line) | |
1011 | error (_("The 'collect' command can only be used for tracepoints")); | |
1012 | ||
51661e93 VP |
1013 | if (strstr (c->line, "teval ") == c->line) |
1014 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1015 | } |
1016 | } | |
1017 | ||
c1fc2657 | 1018 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1019 | { |
c1fc2657 | 1020 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1021 | }; |
1022 | ||
d77f58be SS |
1023 | /* Encapsulate tests for different types of tracepoints. */ |
1024 | ||
3b0871f4 SM |
1025 | static bool |
1026 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1027 | { |
1028 | return (type == bp_tracepoint | |
1029 | || type == bp_fast_tracepoint | |
1030 | || type == bp_static_tracepoint); | |
1031 | } | |
1032 | ||
3b0871f4 SM |
1033 | static bool |
1034 | is_longjmp_type (bptype type) | |
1035 | { | |
1036 | return type == bp_longjmp || type == bp_exception; | |
1037 | } | |
1038 | ||
f2478a7e SM |
1039 | /* See breakpoint.h. */ |
1040 | ||
1041 | bool | |
d77f58be | 1042 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1043 | { |
d9b3f62e | 1044 | return is_tracepoint_type (b->type); |
a7bdde9e | 1045 | } |
d9b3f62e | 1046 | |
a5e364af SM |
1047 | /* Factory function to create an appropriate instance of breakpoint given |
1048 | TYPE. */ | |
1049 | ||
1050 | static std::unique_ptr<breakpoint> | |
1051 | new_breakpoint_from_type (bptype type) | |
1052 | { | |
1053 | breakpoint *b; | |
1054 | ||
1055 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1056 | b = new tracepoint (); |
3b0871f4 | 1057 | else if (is_longjmp_type (type)) |
c1fc2657 | 1058 | b = new longjmp_breakpoint (); |
a5e364af SM |
1059 | else |
1060 | b = new breakpoint (); | |
1061 | ||
1062 | return std::unique_ptr<breakpoint> (b); | |
1063 | } | |
1064 | ||
e5dd4106 | 1065 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1066 | breakpoint. This function will throw an exception if a problem is |
1067 | found. */ | |
48cb2d85 | 1068 | |
95a42b64 TT |
1069 | static void |
1070 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1071 | struct command_line *commands) | |
48cb2d85 | 1072 | { |
d77f58be | 1073 | if (is_tracepoint (b)) |
a7bdde9e | 1074 | { |
c9a6ce02 | 1075 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1076 | struct command_line *c; |
1077 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1078 | |
1079 | /* Reset the while-stepping step count. The previous commands | |
1080 | might have included a while-stepping action, while the new | |
1081 | ones might not. */ | |
1082 | t->step_count = 0; | |
1083 | ||
1084 | /* We need to verify that each top-level element of commands is | |
1085 | valid for tracepoints, that there's at most one | |
1086 | while-stepping element, and that the while-stepping's body | |
1087 | has valid tracing commands excluding nested while-stepping. | |
1088 | We also need to validate the tracepoint action line in the | |
1089 | context of the tracepoint --- validate_actionline actually | |
1090 | has side effects, like setting the tracepoint's | |
1091 | while-stepping STEP_COUNT, in addition to checking if the | |
1092 | collect/teval actions parse and make sense in the | |
1093 | tracepoint's context. */ | |
a7bdde9e VP |
1094 | for (c = commands; c; c = c->next) |
1095 | { | |
a7bdde9e VP |
1096 | if (c->control_type == while_stepping_control) |
1097 | { | |
1098 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1099 | error (_("The 'while-stepping' command " |
1100 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1101 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1102 | error (_("The 'while-stepping' command " |
1103 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1104 | |
1105 | if (while_stepping) | |
3e43a32a MS |
1106 | error (_("The 'while-stepping' command " |
1107 | "can be used only once")); | |
a7bdde9e VP |
1108 | else |
1109 | while_stepping = c; | |
1110 | } | |
c9a6ce02 PA |
1111 | |
1112 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1113 | } |
1114 | if (while_stepping) | |
1115 | { | |
1116 | struct command_line *c2; | |
1117 | ||
12973681 TT |
1118 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1119 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1120 | for (; c2; c2 = c2->next) |
1121 | { | |
a7bdde9e VP |
1122 | if (c2->control_type == while_stepping_control) |
1123 | error (_("The 'while-stepping' command cannot be nested")); | |
1124 | } | |
1125 | } | |
1126 | } | |
1127 | else | |
1128 | { | |
1129 | check_no_tracepoint_commands (commands); | |
1130 | } | |
95a42b64 TT |
1131 | } |
1132 | ||
0fb4aa4b PA |
1133 | /* Return a vector of all the static tracepoints set at ADDR. The |
1134 | caller is responsible for releasing the vector. */ | |
1135 | ||
f51e0e20 | 1136 | std::vector<breakpoint *> |
0fb4aa4b PA |
1137 | static_tracepoints_here (CORE_ADDR addr) |
1138 | { | |
1139 | struct breakpoint *b; | |
f51e0e20 | 1140 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1141 | struct bp_location *loc; |
1142 | ||
1143 | ALL_BREAKPOINTS (b) | |
1144 | if (b->type == bp_static_tracepoint) | |
1145 | { | |
1146 | for (loc = b->loc; loc; loc = loc->next) | |
1147 | if (loc->address == addr) | |
f51e0e20 | 1148 | found.push_back (b); |
0fb4aa4b PA |
1149 | } |
1150 | ||
1151 | return found; | |
1152 | } | |
1153 | ||
95a42b64 | 1154 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1155 | validate that only allowed commands are included. */ |
95a42b64 TT |
1156 | |
1157 | void | |
4a64f543 | 1158 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1159 | counted_command_line &&commands) |
95a42b64 | 1160 | { |
93921405 | 1161 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1162 | |
d1b0a7bf | 1163 | b->commands = std::move (commands); |
76727919 | 1164 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1165 | } |
1166 | ||
45a43567 TT |
1167 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1168 | is not the same as the "silent" that may appear in the breakpoint's | |
1169 | commands. */ | |
1170 | ||
1171 | void | |
1172 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1173 | { | |
1174 | int old_silent = b->silent; | |
1175 | ||
1176 | b->silent = silent; | |
1177 | if (old_silent != silent) | |
76727919 | 1178 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1179 | } |
1180 | ||
1181 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1182 | breakpoint work for any thread. */ | |
1183 | ||
1184 | void | |
1185 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1186 | { | |
1187 | int old_thread = b->thread; | |
1188 | ||
1189 | b->thread = thread; | |
1190 | if (old_thread != thread) | |
76727919 | 1191 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1192 | } |
1193 | ||
1194 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1195 | breakpoint work for any task. */ | |
1196 | ||
1197 | void | |
1198 | breakpoint_set_task (struct breakpoint *b, int task) | |
1199 | { | |
1200 | int old_task = b->task; | |
1201 | ||
1202 | b->task = task; | |
1203 | if (old_task != task) | |
76727919 | 1204 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1205 | } |
1206 | ||
95a42b64 | 1207 | static void |
896b6bda | 1208 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1209 | struct command_line *control) |
95a42b64 | 1210 | { |
d1b0a7bf | 1211 | counted_command_line cmd; |
999700cd PW |
1212 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1213 | NULL after the call to read_command_lines if the user provides an empty | |
1214 | list of command by just typing "end". */ | |
1215 | bool cmd_read = false; | |
95a42b64 | 1216 | |
896b6bda PA |
1217 | std::string new_arg; |
1218 | ||
95a42b64 TT |
1219 | if (arg == NULL || !*arg) |
1220 | { | |
86b17b60 | 1221 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1222 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1223 | breakpoint_count); | |
95a42b64 | 1224 | else if (breakpoint_count > 0) |
896b6bda | 1225 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1226 | arg = new_arg.c_str (); |
1227 | } | |
1228 | ||
1229 | map_breakpoint_numbers | |
1230 | (arg, [&] (breakpoint *b) | |
1231 | { | |
999700cd | 1232 | if (!cmd_read) |
48649e1b | 1233 | { |
999700cd | 1234 | gdb_assert (cmd == NULL); |
48649e1b | 1235 | if (control != NULL) |
12973681 | 1236 | cmd = control->body_list_0; |
48649e1b TT |
1237 | else |
1238 | { | |
81b1e71c TT |
1239 | std::string str |
1240 | = string_printf (_("Type commands for breakpoint(s) " | |
1241 | "%s, one per line."), | |
1242 | arg); | |
48649e1b | 1243 | |
60b3cef2 TT |
1244 | auto do_validate = [=] (const char *line) |
1245 | { | |
1246 | validate_actionline (line, b); | |
1247 | }; | |
1248 | gdb::function_view<void (const char *)> validator; | |
1249 | if (is_tracepoint (b)) | |
1250 | validator = do_validate; | |
1251 | ||
1252 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1253 | } |
999700cd | 1254 | cmd_read = true; |
48649e1b TT |
1255 | } |
1256 | ||
1257 | /* If a breakpoint was on the list more than once, we don't need to | |
1258 | do anything. */ | |
1259 | if (b->commands != cmd) | |
1260 | { | |
d1b0a7bf | 1261 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1262 | b->commands = cmd; |
76727919 | 1263 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1264 | } |
1265 | }); | |
95a42b64 TT |
1266 | } |
1267 | ||
1268 | static void | |
0b39b52e | 1269 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1270 | { |
1271 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1272 | } |
40c03ae8 EZ |
1273 | |
1274 | /* Like commands_command, but instead of reading the commands from | |
1275 | input stream, takes them from an already parsed command structure. | |
1276 | ||
1277 | This is used by cli-script.c to DTRT with breakpoint commands | |
1278 | that are part of if and while bodies. */ | |
1279 | enum command_control_type | |
896b6bda | 1280 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1281 | { |
95a42b64 TT |
1282 | commands_command_1 (arg, 0, cmd); |
1283 | return simple_control; | |
40c03ae8 | 1284 | } |
876fa593 JK |
1285 | |
1286 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1287 | ||
1288 | static int | |
1289 | bp_location_has_shadow (struct bp_location *bl) | |
1290 | { | |
1291 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1292 | return 0; | |
1293 | if (!bl->inserted) | |
1294 | return 0; | |
1295 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1296 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1297 | return 0; |
1298 | return 1; | |
1299 | } | |
1300 | ||
9d497a19 PA |
1301 | /* Update BUF, which is LEN bytes read from the target address |
1302 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1303 | contents. | |
1304 | ||
1305 | If READBUF is not NULL, this buffer must not overlap with the of | |
1306 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1307 | failed assertion internal error will be raised. */ | |
1308 | ||
1309 | static void | |
1310 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1311 | const gdb_byte *writebuf_org, | |
1312 | ULONGEST memaddr, LONGEST len, | |
1313 | struct bp_target_info *target_info, | |
1314 | struct gdbarch *gdbarch) | |
1315 | { | |
1316 | /* Now do full processing of the found relevant range of elements. */ | |
1317 | CORE_ADDR bp_addr = 0; | |
1318 | int bp_size = 0; | |
1319 | int bptoffset = 0; | |
1320 | ||
1321 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1322 | current_program_space->aspace, 0)) | |
1323 | { | |
1324 | /* The breakpoint is inserted in a different address space. */ | |
1325 | return; | |
1326 | } | |
1327 | ||
1328 | /* Addresses and length of the part of the breakpoint that | |
1329 | we need to copy. */ | |
1330 | bp_addr = target_info->placed_address; | |
1331 | bp_size = target_info->shadow_len; | |
1332 | ||
1333 | if (bp_addr + bp_size <= memaddr) | |
1334 | { | |
1335 | /* The breakpoint is entirely before the chunk of memory we are | |
1336 | reading. */ | |
1337 | return; | |
1338 | } | |
1339 | ||
1340 | if (bp_addr >= memaddr + len) | |
1341 | { | |
1342 | /* The breakpoint is entirely after the chunk of memory we are | |
1343 | reading. */ | |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | /* Offset within shadow_contents. */ | |
1348 | if (bp_addr < memaddr) | |
1349 | { | |
1350 | /* Only copy the second part of the breakpoint. */ | |
1351 | bp_size -= memaddr - bp_addr; | |
1352 | bptoffset = memaddr - bp_addr; | |
1353 | bp_addr = memaddr; | |
1354 | } | |
1355 | ||
1356 | if (bp_addr + bp_size > memaddr + len) | |
1357 | { | |
1358 | /* Only copy the first part of the breakpoint. */ | |
1359 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1360 | } | |
1361 | ||
1362 | if (readbuf != NULL) | |
1363 | { | |
1364 | /* Verify that the readbuf buffer does not overlap with the | |
1365 | shadow_contents buffer. */ | |
1366 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1367 | || readbuf >= (target_info->shadow_contents | |
1368 | + target_info->shadow_len)); | |
1369 | ||
1370 | /* Update the read buffer with this inserted breakpoint's | |
1371 | shadow. */ | |
1372 | memcpy (readbuf + bp_addr - memaddr, | |
1373 | target_info->shadow_contents + bptoffset, bp_size); | |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | const unsigned char *bp; | |
0d5ed153 MR |
1378 | CORE_ADDR addr = target_info->reqstd_address; |
1379 | int placed_size; | |
9d497a19 PA |
1380 | |
1381 | /* Update the shadow with what we want to write to memory. */ | |
1382 | memcpy (target_info->shadow_contents + bptoffset, | |
1383 | writebuf_org + bp_addr - memaddr, bp_size); | |
1384 | ||
1385 | /* Determine appropriate breakpoint contents and size for this | |
1386 | address. */ | |
0d5ed153 | 1387 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1388 | |
1389 | /* Update the final write buffer with this inserted | |
1390 | breakpoint's INSN. */ | |
1391 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1392 | } | |
1393 | } | |
1394 | ||
8defab1a | 1395 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1396 | by replacing any memory breakpoints with their shadowed contents. |
1397 | ||
35c63cd8 JB |
1398 | If READBUF is not NULL, this buffer must not overlap with any of |
1399 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1400 | a failed assertion internal error will be raised. | |
1401 | ||
876fa593 | 1402 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1403 | bl->address - bp_locations_placed_address_before_address_max |
1404 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1405 | The range we were requested to resolve shadows for is: |
1406 | memaddr ... memaddr + len | |
1407 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1408 | memaddr + len <= (bl->address |
f5336ca5 | 1409 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1410 | and: |
f5336ca5 | 1411 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1412 | |
8defab1a | 1413 | void |
f0ba3972 PA |
1414 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1415 | const gdb_byte *writebuf_org, | |
1416 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1417 | { |
4a64f543 MS |
1418 | /* Left boundary, right boundary and median element of our binary |
1419 | search. */ | |
876fa593 JK |
1420 | unsigned bc_l, bc_r, bc; |
1421 | ||
4a64f543 MS |
1422 | /* Find BC_L which is a leftmost element which may affect BUF |
1423 | content. It is safe to report lower value but a failure to | |
1424 | report higher one. */ | |
876fa593 JK |
1425 | |
1426 | bc_l = 0; | |
f5336ca5 | 1427 | bc_r = bp_locations_count; |
876fa593 JK |
1428 | while (bc_l + 1 < bc_r) |
1429 | { | |
35df4500 | 1430 | struct bp_location *bl; |
876fa593 JK |
1431 | |
1432 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1433 | bl = bp_locations[bc]; |
876fa593 | 1434 | |
4a64f543 MS |
1435 | /* Check first BL->ADDRESS will not overflow due to the added |
1436 | constant. Then advance the left boundary only if we are sure | |
1437 | the BC element can in no way affect the BUF content (MEMADDR | |
1438 | to MEMADDR + LEN range). | |
876fa593 | 1439 | |
f5336ca5 | 1440 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1441 | offset so that we cannot miss a breakpoint with its shadow |
1442 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1443 | |
f5336ca5 | 1444 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1445 | >= bl->address) |
f5336ca5 | 1446 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1447 | <= memaddr)) |
876fa593 JK |
1448 | bc_l = bc; |
1449 | else | |
1450 | bc_r = bc; | |
1451 | } | |
1452 | ||
128070bb PA |
1453 | /* Due to the binary search above, we need to make sure we pick the |
1454 | first location that's at BC_L's address. E.g., if there are | |
1455 | multiple locations at the same address, BC_L may end up pointing | |
1456 | at a duplicate location, and miss the "master"/"inserted" | |
1457 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1458 | B: | |
1459 | ||
1460 | L1@A, L2@A, L3@B, ... | |
1461 | ||
1462 | BC_L could end up pointing at location L2, while the "master" | |
1463 | location could be L1. Since the `loc->inserted' flag is only set | |
1464 | on "master" locations, we'd forget to restore the shadow of L1 | |
1465 | and L2. */ | |
1466 | while (bc_l > 0 | |
f5336ca5 | 1467 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1468 | bc_l--; |
1469 | ||
876fa593 JK |
1470 | /* Now do full processing of the found relevant range of elements. */ |
1471 | ||
f5336ca5 | 1472 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1473 | { |
f5336ca5 | 1474 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1475 | |
35df4500 TJB |
1476 | /* bp_location array has BL->OWNER always non-NULL. */ |
1477 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1478 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1479 | bl->owner->number); |
ffce0d52 | 1480 | |
e5dd4106 | 1481 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1482 | content. */ |
1483 | ||
f5336ca5 PA |
1484 | if (bl->address >= bp_locations_placed_address_before_address_max |
1485 | && memaddr + len <= (bl->address | |
1486 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1487 | break; |
1488 | ||
35df4500 | 1489 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1490 | continue; |
6c95b8df | 1491 | |
9d497a19 PA |
1492 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1493 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1494 | } | |
c906108c | 1495 | } |
9d497a19 | 1496 | |
f2478a7e | 1497 | /* See breakpoint.h. */ |
b775012e | 1498 | |
f2478a7e | 1499 | bool |
b775012e LM |
1500 | is_breakpoint (const struct breakpoint *bpt) |
1501 | { | |
1502 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1503 | || bpt->type == bp_hardware_breakpoint |
1504 | || bpt->type == bp_dprintf); | |
b775012e LM |
1505 | } |
1506 | ||
60e1c644 PA |
1507 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1508 | ||
f2478a7e | 1509 | static bool |
d77f58be | 1510 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1511 | { |
1512 | return (bpt->type == bp_hardware_watchpoint | |
1513 | || bpt->type == bp_read_watchpoint | |
1514 | || bpt->type == bp_access_watchpoint); | |
1515 | } | |
7270d8f2 | 1516 | |
f2478a7e | 1517 | /* See breakpoint.h. */ |
60e1c644 | 1518 | |
f2478a7e | 1519 | bool |
d77f58be | 1520 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1521 | { |
1522 | return (is_hardware_watchpoint (bpt) | |
1523 | || bpt->type == bp_watchpoint); | |
1524 | } | |
1525 | ||
3a5c3e22 PA |
1526 | /* Returns true if the current thread and its running state are safe |
1527 | to evaluate or update watchpoint B. Watchpoints on local | |
1528 | expressions need to be evaluated in the context of the thread that | |
1529 | was current when the watchpoint was created, and, that thread needs | |
1530 | to be stopped to be able to select the correct frame context. | |
1531 | Watchpoints on global expressions can be evaluated on any thread, | |
1532 | and in any state. It is presently left to the target allowing | |
1533 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1534 | |
1535 | static int | |
3a5c3e22 | 1536 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1537 | { |
c1fc2657 | 1538 | return (b->pspace == current_program_space |
d7e15655 TT |
1539 | && (b->watchpoint_thread == null_ptid |
1540 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1541 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1542 | } |
1543 | ||
d0fb5eae JK |
1544 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1545 | associated bp_watchpoint_scope breakpoint. */ | |
1546 | ||
1547 | static void | |
3a5c3e22 | 1548 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1549 | { |
c1fc2657 | 1550 | if (w->related_breakpoint != w) |
d0fb5eae | 1551 | { |
c1fc2657 SM |
1552 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1553 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1554 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1555 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1556 | w->related_breakpoint = w; | |
d0fb5eae | 1557 | } |
c1fc2657 | 1558 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1559 | } |
1560 | ||
bb9d5f81 PP |
1561 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1562 | watchpoint W. */ | |
1563 | ||
1564 | static struct value * | |
1565 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1566 | { | |
1567 | struct value *bit_val; | |
1568 | ||
1569 | if (val == NULL) | |
1570 | return NULL; | |
1571 | ||
1572 | bit_val = allocate_value (value_type (val)); | |
1573 | ||
1574 | unpack_value_bitfield (bit_val, | |
1575 | w->val_bitpos, | |
1576 | w->val_bitsize, | |
1577 | value_contents_for_printing (val), | |
1578 | value_offset (val), | |
1579 | val); | |
1580 | ||
1581 | return bit_val; | |
1582 | } | |
1583 | ||
c6d81124 PA |
1584 | /* Allocate a dummy location and add it to B, which must be a software |
1585 | watchpoint. This is required because even if a software watchpoint | |
1586 | is not watching any memory, bpstat_stop_status requires a location | |
1587 | to be able to report stops. */ | |
1588 | ||
1589 | static void | |
1590 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1591 | struct program_space *pspace) | |
1592 | { | |
1593 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1594 | ||
1595 | b->loc = allocate_bp_location (b); | |
1596 | b->loc->pspace = pspace; | |
1597 | b->loc->address = -1; | |
1598 | b->loc->length = -1; | |
1599 | } | |
1600 | ||
1601 | /* Returns true if B is a software watchpoint that is not watching any | |
1602 | memory (e.g., "watch $pc"). */ | |
1603 | ||
f2478a7e | 1604 | static bool |
c6d81124 PA |
1605 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1606 | { | |
1607 | return (b->type == bp_watchpoint | |
1608 | && b->loc != NULL | |
1609 | && b->loc->next == NULL | |
1610 | && b->loc->address == -1 | |
1611 | && b->loc->length == -1); | |
1612 | } | |
1613 | ||
567e1b4e JB |
1614 | /* Assuming that B is a watchpoint: |
1615 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1616 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1617 | - Evaluate the condition if there is one, and store the result |
1618 | in b->loc->cond. | |
a5606eee VP |
1619 | - Update the list of values that must be watched in B->loc. |
1620 | ||
4a64f543 MS |
1621 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1622 | nothing. If this is local watchpoint that is out of scope, delete | |
1623 | it. | |
1624 | ||
1625 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1626 | removed + inserted on each stop here. Normal breakpoints must | |
1627 | never be removed because they might be missed by a running thread | |
1628 | when debugging in non-stop mode. On the other hand, hardware | |
1629 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1630 | to each LWP since they are stored in each LWP's hardware debug | |
1631 | registers. Therefore, such LWP must be stopped first in order to | |
1632 | be able to modify its hardware watchpoints. | |
1633 | ||
1634 | Hardware watchpoints must be reset exactly once after being | |
1635 | presented to the user. It cannot be done sooner, because it would | |
1636 | reset the data used to present the watchpoint hit to the user. And | |
1637 | it must not be done later because it could display the same single | |
1638 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1639 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1640 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1641 | not user-visible - its hit is suppressed if the memory content has | |
1642 | not changed. | |
1643 | ||
1644 | The following constraints influence the location where we can reset | |
1645 | hardware watchpoints: | |
1646 | ||
1647 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1648 | called several times when GDB stops. | |
1649 | ||
1650 | [linux] | |
1651 | * Multiple hardware watchpoints can be hit at the same time, | |
1652 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1653 | hit at a time as the reason for stopping, and all the other hits | |
1654 | are presented later, one after the other, each time the user | |
1655 | requests the execution to be resumed. Execution is not resumed | |
1656 | for the threads still having pending hit event stored in | |
1657 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1658 | the inferior on the first stop the thread hit event is kept being | |
1659 | reported from its cached value by linux_nat_stopped_data_address | |
1660 | until the real thread resume happens after the watchpoint gets | |
1661 | presented and thus its LWP_INFO->STATUS gets reset. | |
1662 | ||
1663 | Therefore the hardware watchpoint hit can get safely reset on the | |
1664 | watchpoint removal from inferior. */ | |
a79d3c27 | 1665 | |
b40ce68a | 1666 | static void |
3a5c3e22 | 1667 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1668 | { |
a5606eee | 1669 | int within_current_scope; |
a5606eee | 1670 | struct frame_id saved_frame_id; |
66076460 | 1671 | int frame_saved; |
a5606eee | 1672 | |
f6bc2008 PA |
1673 | /* If this is a local watchpoint, we only want to check if the |
1674 | watchpoint frame is in scope if the current thread is the thread | |
1675 | that was used to create the watchpoint. */ | |
1676 | if (!watchpoint_in_thread_scope (b)) | |
1677 | return; | |
1678 | ||
c1fc2657 | 1679 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1680 | return; |
1681 | ||
66076460 | 1682 | frame_saved = 0; |
a5606eee VP |
1683 | |
1684 | /* Determine if the watchpoint is within scope. */ | |
1685 | if (b->exp_valid_block == NULL) | |
1686 | within_current_scope = 1; | |
1687 | else | |
1688 | { | |
b5db5dfc UW |
1689 | struct frame_info *fi = get_current_frame (); |
1690 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1691 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1692 | ||
c9cf6e20 MG |
1693 | /* If we're at a point where the stack has been destroyed |
1694 | (e.g. in a function epilogue), unwinding may not work | |
1695 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1696 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1697 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1698 | return; |
66076460 DJ |
1699 | |
1700 | /* Save the current frame's ID so we can restore it after | |
1701 | evaluating the watchpoint expression on its own frame. */ | |
1702 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1703 | took a frame parameter, so that we didn't have to change the | |
1704 | selected frame. */ | |
1705 | frame_saved = 1; | |
1706 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1707 | ||
a5606eee VP |
1708 | fi = frame_find_by_id (b->watchpoint_frame); |
1709 | within_current_scope = (fi != NULL); | |
1710 | if (within_current_scope) | |
1711 | select_frame (fi); | |
1712 | } | |
1713 | ||
b5db5dfc UW |
1714 | /* We don't free locations. They are stored in the bp_location array |
1715 | and update_global_location_list will eventually delete them and | |
1716 | remove breakpoints if needed. */ | |
c1fc2657 | 1717 | b->loc = NULL; |
b5db5dfc | 1718 | |
a5606eee VP |
1719 | if (within_current_scope && reparse) |
1720 | { | |
bbc13ae3 | 1721 | const char *s; |
d63d0675 | 1722 | |
4d01a485 | 1723 | b->exp.reset (); |
d63d0675 | 1724 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1725 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1726 | /* If the meaning of expression itself changed, the old value is |
1727 | no longer relevant. We don't want to report a watchpoint hit | |
1728 | to the user when the old value and the new value may actually | |
1729 | be completely different objects. */ | |
fa4727a6 | 1730 | b->val = NULL; |
4c1d86d9 | 1731 | b->val_valid = false; |
60e1c644 PA |
1732 | |
1733 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1734 | expression is stored in the breakpoint object, not in the | |
1735 | locations (re)created below. */ | |
c1fc2657 | 1736 | if (b->cond_string != NULL) |
60e1c644 | 1737 | { |
4d01a485 | 1738 | b->cond_exp.reset (); |
60e1c644 | 1739 | |
c1fc2657 | 1740 | s = b->cond_string; |
1bb9788d | 1741 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1742 | } |
a5606eee | 1743 | } |
a5606eee VP |
1744 | |
1745 | /* If we failed to parse the expression, for example because | |
1746 | it refers to a global variable in a not-yet-loaded shared library, | |
1747 | don't try to insert watchpoint. We don't automatically delete | |
1748 | such watchpoint, though, since failure to parse expression | |
1749 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1750 | if (!target_has_execution) |
2d134ed3 PA |
1751 | { |
1752 | /* Without execution, memory can't change. No use to try and | |
1753 | set watchpoint locations. The watchpoint will be reset when | |
1754 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1755 | if (!can_use_hw_watchpoints) |
1756 | { | |
c1fc2657 SM |
1757 | if (b->ops->works_in_software_mode (b)) |
1758 | b->type = bp_watchpoint; | |
e8369a73 | 1759 | else |
638aa5a1 AB |
1760 | error (_("Can't set read/access watchpoint when " |
1761 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1762 | } |
2d134ed3 PA |
1763 | } |
1764 | else if (within_current_scope && b->exp) | |
a5606eee | 1765 | { |
0cf6dd15 | 1766 | int pc = 0; |
a6535de1 | 1767 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1768 | struct value *v, *result; |
2d134ed3 | 1769 | struct program_space *frame_pspace; |
a5606eee | 1770 | |
4d01a485 | 1771 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1772 | |
a5606eee VP |
1773 | /* Avoid setting b->val if it's already set. The meaning of |
1774 | b->val is 'the last value' user saw, and we should update | |
1775 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1776 | happens, the code that reports it updates b->val directly. |
1777 | We don't keep track of the memory value for masked | |
1778 | watchpoints. */ | |
c1fc2657 | 1779 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1780 | { |
bb9d5f81 | 1781 | if (b->val_bitsize != 0) |
850645cf TT |
1782 | v = extract_bitfield_from_watchpoint_value (b, v); |
1783 | b->val = release_value (v); | |
4c1d86d9 | 1784 | b->val_valid = true; |
fa4727a6 | 1785 | } |
a5606eee | 1786 | |
2d134ed3 PA |
1787 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1788 | ||
a5606eee | 1789 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1790 | gdb_assert (!val_chain.empty ()); |
1791 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1792 | { |
a6535de1 TT |
1793 | v = iter.get (); |
1794 | ||
a5606eee VP |
1795 | /* If it's a memory location, and GDB actually needed |
1796 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1797 | must watch it. If the first value returned is |
1798 | still lazy, that means an error occurred reading it; | |
1799 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1800 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1801 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1802 | { |
1803 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1804 | |
a5606eee VP |
1805 | /* We only watch structs and arrays if user asked |
1806 | for it explicitly, never if they just happen to | |
1807 | appear in the middle of some value chain. */ | |
fa4727a6 | 1808 | if (v == result |
78134374 SM |
1809 | || (vtype->code () != TYPE_CODE_STRUCT |
1810 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1811 | { |
1812 | CORE_ADDR addr; | |
f486487f | 1813 | enum target_hw_bp_type type; |
a5606eee | 1814 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1815 | int bitpos = 0, bitsize = 0; |
1816 | ||
1817 | if (value_bitsize (v) != 0) | |
1818 | { | |
1819 | /* Extract the bit parameters out from the bitfield | |
1820 | sub-expression. */ | |
1821 | bitpos = value_bitpos (v); | |
1822 | bitsize = value_bitsize (v); | |
1823 | } | |
1824 | else if (v == result && b->val_bitsize != 0) | |
1825 | { | |
1826 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1827 | lvalue whose bit parameters are saved in the fields | |
1828 | VAL_BITPOS and VAL_BITSIZE. */ | |
1829 | bitpos = b->val_bitpos; | |
1830 | bitsize = b->val_bitsize; | |
1831 | } | |
a5606eee | 1832 | |
42ae5230 | 1833 | addr = value_address (v); |
bb9d5f81 PP |
1834 | if (bitsize != 0) |
1835 | { | |
1836 | /* Skip the bytes that don't contain the bitfield. */ | |
1837 | addr += bitpos / 8; | |
1838 | } | |
1839 | ||
a5606eee | 1840 | type = hw_write; |
c1fc2657 | 1841 | if (b->type == bp_read_watchpoint) |
a5606eee | 1842 | type = hw_read; |
c1fc2657 | 1843 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1844 | type = hw_access; |
3a5c3e22 | 1845 | |
c1fc2657 SM |
1846 | loc = allocate_bp_location (b); |
1847 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1848 | ; |
1849 | *tmp = loc; | |
a6d9a66e | 1850 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1851 | |
1852 | loc->pspace = frame_pspace; | |
f17d9474 | 1853 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1854 | |
1855 | if (bitsize != 0) | |
1856 | { | |
1857 | /* Just cover the bytes that make up the bitfield. */ | |
1858 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1859 | } | |
1860 | else | |
1861 | loc->length = TYPE_LENGTH (value_type (v)); | |
1862 | ||
a5606eee VP |
1863 | loc->watchpoint_type = type; |
1864 | } | |
1865 | } | |
9fa40276 TJB |
1866 | } |
1867 | ||
1868 | /* Change the type of breakpoint between hardware assisted or | |
1869 | an ordinary watchpoint depending on the hardware support | |
1870 | and free hardware slots. REPARSE is set when the inferior | |
1871 | is started. */ | |
a9634178 | 1872 | if (reparse) |
9fa40276 | 1873 | { |
e09342b5 | 1874 | int reg_cnt; |
9fa40276 TJB |
1875 | enum bp_loc_type loc_type; |
1876 | struct bp_location *bl; | |
a5606eee | 1877 | |
a9634178 | 1878 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1879 | |
1880 | if (reg_cnt) | |
9fa40276 TJB |
1881 | { |
1882 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1883 | enum bptype type; |
9fa40276 | 1884 | |
a9634178 TJB |
1885 | /* Use an exact watchpoint when there's only one memory region to be |
1886 | watched, and only one debug register is needed to watch it. */ | |
1887 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1888 | ||
9fa40276 | 1889 | /* We need to determine how many resources are already |
e09342b5 TJB |
1890 | used for all other hardware watchpoints plus this one |
1891 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1892 | this watchpoint in as well. */ |
1893 | ||
1894 | /* If this is a software watchpoint, we try to turn it | |
1895 | to a hardware one -- count resources as if B was of | |
1896 | hardware watchpoint type. */ | |
c1fc2657 | 1897 | type = b->type; |
a1398e0c PA |
1898 | if (type == bp_watchpoint) |
1899 | type = bp_hardware_watchpoint; | |
1900 | ||
1901 | /* This watchpoint may or may not have been placed on | |
1902 | the list yet at this point (it won't be in the list | |
1903 | if we're trying to create it for the first time, | |
1904 | through watch_command), so always account for it | |
1905 | manually. */ | |
1906 | ||
1907 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1908 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1909 | |
1910 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1911 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1912 | |
1913 | target_resources_ok | |
1914 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1915 | if (target_resources_ok <= 0) |
a9634178 | 1916 | { |
c1fc2657 | 1917 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1918 | |
1919 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1920 | error (_("Target does not support this type of " |
1921 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1922 | else if (target_resources_ok < 0 && !sw_mode) |
1923 | error (_("There are not enough available hardware " | |
1924 | "resources for this watchpoint.")); | |
a1398e0c PA |
1925 | |
1926 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1927 | b->type = bp_watchpoint; |
a1398e0c PA |
1928 | } |
1929 | else | |
1930 | { | |
1931 | /* If this was a software watchpoint, we've just | |
1932 | found we have enough resources to turn it to a | |
1933 | hardware watchpoint. Otherwise, this is a | |
1934 | nop. */ | |
c1fc2657 | 1935 | b->type = type; |
a9634178 | 1936 | } |
9fa40276 | 1937 | } |
c1fc2657 | 1938 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1939 | { |
1940 | if (!can_use_hw_watchpoints) | |
1941 | error (_("Can't set read/access watchpoint when " | |
1942 | "hardware watchpoints are disabled.")); | |
1943 | else | |
1944 | error (_("Expression cannot be implemented with " | |
1945 | "read/access watchpoint.")); | |
1946 | } | |
9fa40276 | 1947 | else |
c1fc2657 | 1948 | b->type = bp_watchpoint; |
9fa40276 | 1949 | |
c1fc2657 | 1950 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1951 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1952 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1953 | bl->loc_type = loc_type; |
1954 | } | |
1955 | ||
c7437ca6 PA |
1956 | /* If a software watchpoint is not watching any memory, then the |
1957 | above left it without any location set up. But, | |
1958 | bpstat_stop_status requires a location to be able to report | |
1959 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1960 | if (b->type == bp_watchpoint && b->loc == NULL) |
1961 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1962 | } |
1963 | else if (!within_current_scope) | |
7270d8f2 | 1964 | { |
ac74f770 MS |
1965 | printf_filtered (_("\ |
1966 | Watchpoint %d deleted because the program has left the block\n\ | |
1967 | in which its expression is valid.\n"), | |
c1fc2657 | 1968 | b->number); |
d0fb5eae | 1969 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1970 | } |
a5606eee VP |
1971 | |
1972 | /* Restore the selected frame. */ | |
66076460 DJ |
1973 | if (frame_saved) |
1974 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1975 | } |
1976 | ||
a5606eee | 1977 | |
74960c60 | 1978 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1979 | inserted in the inferior. We don't differentiate the type of BL's owner |
1980 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1981 | breakpoint_ops is not defined, because in insert_bp_location, | |
1982 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1983 | static int |
35df4500 | 1984 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1985 | { |
35df4500 | 1986 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1987 | return 0; |
1988 | ||
35df4500 | 1989 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1990 | return 0; |
1991 | ||
35df4500 | 1992 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1993 | return 0; |
1994 | ||
f8eba3c6 TT |
1995 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1996 | return 0; | |
1997 | ||
56710373 PA |
1998 | /* This is set for example, when we're attached to the parent of a |
1999 | vfork, and have detached from the child. The child is running | |
2000 | free, and we expect it to do an exec or exit, at which point the | |
2001 | OS makes the parent schedulable again (and the target reports | |
2002 | that the vfork is done). Until the child is done with the shared | |
2003 | memory region, do not insert breakpoints in the parent, otherwise | |
2004 | the child could still trip on the parent's breakpoints. Since | |
2005 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2006 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2007 | return 0; |
2008 | ||
31e77af2 | 2009 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2010 | location, except if the breakpoint is a single-step breakpoint, |
2011 | and the breakpoint's thread is the thread which is stepping past | |
2012 | a breakpoint. */ | |
31e77af2 PA |
2013 | if ((bl->loc_type == bp_loc_software_breakpoint |
2014 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2015 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2016 | bl->address) |
2017 | /* The single-step breakpoint may be inserted at the location | |
2018 | we're trying to step if the instruction branches to itself. | |
2019 | However, the instruction won't be executed at all and it may | |
2020 | break the semantics of the instruction, for example, the | |
2021 | instruction is a conditional branch or updates some flags. | |
2022 | We can't fix it unless GDB is able to emulate the instruction | |
2023 | or switch to displaced stepping. */ | |
2024 | && !(bl->owner->type == bp_single_step | |
2025 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2026 | { |
2027 | if (debug_infrun) | |
2028 | { | |
2029 | fprintf_unfiltered (gdb_stdlog, | |
2030 | "infrun: skipping breakpoint: " | |
2031 | "stepping past insn at: %s\n", | |
2032 | paddress (bl->gdbarch, bl->address)); | |
2033 | } | |
2034 | return 0; | |
2035 | } | |
31e77af2 | 2036 | |
963f9c80 PA |
2037 | /* Don't insert watchpoints if we're trying to step past the |
2038 | instruction that triggered one. */ | |
2039 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2040 | && stepping_past_nonsteppable_watchpoint ()) | |
2041 | { | |
2042 | if (debug_infrun) | |
2043 | { | |
2044 | fprintf_unfiltered (gdb_stdlog, | |
2045 | "infrun: stepping past non-steppable watchpoint. " | |
2046 | "skipping watchpoint at %s:%d\n", | |
2047 | paddress (bl->gdbarch, bl->address), | |
2048 | bl->length); | |
2049 | } | |
2050 | return 0; | |
2051 | } | |
2052 | ||
74960c60 VP |
2053 | return 1; |
2054 | } | |
2055 | ||
934709f0 PW |
2056 | /* Same as should_be_inserted but does the check assuming |
2057 | that the location is not duplicated. */ | |
2058 | ||
2059 | static int | |
2060 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2061 | { | |
2062 | int result; | |
2063 | const int save_duplicate = bl->duplicate; | |
2064 | ||
2065 | bl->duplicate = 0; | |
2066 | result = should_be_inserted (bl); | |
2067 | bl->duplicate = save_duplicate; | |
2068 | return result; | |
2069 | } | |
2070 | ||
b775012e LM |
2071 | /* Parses a conditional described by an expression COND into an |
2072 | agent expression bytecode suitable for evaluation | |
2073 | by the bytecode interpreter. Return NULL if there was | |
2074 | any error during parsing. */ | |
2075 | ||
833177a4 | 2076 | static agent_expr_up |
b775012e LM |
2077 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2078 | { | |
833177a4 | 2079 | if (cond == NULL) |
b775012e LM |
2080 | return NULL; |
2081 | ||
833177a4 PA |
2082 | agent_expr_up aexpr; |
2083 | ||
b775012e LM |
2084 | /* We don't want to stop processing, so catch any errors |
2085 | that may show up. */ | |
a70b8144 | 2086 | try |
b775012e | 2087 | { |
036e657b | 2088 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2089 | } |
2090 | ||
230d2906 | 2091 | catch (const gdb_exception_error &ex) |
b775012e LM |
2092 | { |
2093 | /* If we got here, it means the condition could not be parsed to a valid | |
2094 | bytecode expression and thus can't be evaluated on the target's side. | |
2095 | It's no use iterating through the conditions. */ | |
b775012e LM |
2096 | } |
2097 | ||
2098 | /* We have a valid agent expression. */ | |
2099 | return aexpr; | |
2100 | } | |
2101 | ||
2102 | /* Based on location BL, create a list of breakpoint conditions to be | |
2103 | passed on to the target. If we have duplicated locations with different | |
2104 | conditions, we will add such conditions to the list. The idea is that the | |
2105 | target will evaluate the list of conditions and will only notify GDB when | |
2106 | one of them is true. */ | |
2107 | ||
2108 | static void | |
2109 | build_target_condition_list (struct bp_location *bl) | |
2110 | { | |
2111 | struct bp_location **locp = NULL, **loc2p; | |
2112 | int null_condition_or_parse_error = 0; | |
2113 | int modified = bl->needs_update; | |
2114 | struct bp_location *loc; | |
2115 | ||
8b4f3082 | 2116 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2117 | bl->target_info.conditions.clear (); |
8b4f3082 | 2118 | |
b775012e LM |
2119 | /* This is only meaningful if the target is |
2120 | evaluating conditions and if the user has | |
2121 | opted for condition evaluation on the target's | |
2122 | side. */ | |
2123 | if (gdb_evaluates_breakpoint_condition_p () | |
2124 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2125 | return; | |
2126 | ||
2127 | /* Do a first pass to check for locations with no assigned | |
2128 | conditions or conditions that fail to parse to a valid agent expression | |
2129 | bytecode. If any of these happen, then it's no use to send conditions | |
2130 | to the target since this location will always trigger and generate a | |
2131 | response back to GDB. */ | |
2132 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2133 | { | |
2134 | loc = (*loc2p); | |
2135 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2136 | { | |
2137 | if (modified) | |
2138 | { | |
b775012e LM |
2139 | /* Re-parse the conditions since something changed. In that |
2140 | case we already freed the condition bytecodes (see | |
2141 | force_breakpoint_reinsertion). We just | |
2142 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2143 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2144 | loc->cond.get ()); | |
b775012e LM |
2145 | } |
2146 | ||
2147 | /* If we have a NULL bytecode expression, it means something | |
2148 | went wrong or we have a null condition expression. */ | |
2149 | if (!loc->cond_bytecode) | |
2150 | { | |
2151 | null_condition_or_parse_error = 1; | |
2152 | break; | |
2153 | } | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* If any of these happened, it means we will have to evaluate the conditions | |
2158 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2159 | for all the other duplicate locations, thus we free all of them here. | |
2160 | ||
2161 | This is so we have a finer control over which locations' conditions are | |
2162 | being evaluated by GDB or the remote stub. */ | |
2163 | if (null_condition_or_parse_error) | |
2164 | { | |
2165 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2166 | { | |
2167 | loc = (*loc2p); | |
2168 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2169 | { | |
2170 | /* Only go as far as the first NULL bytecode is | |
2171 | located. */ | |
2172 | if (!loc->cond_bytecode) | |
2173 | return; | |
2174 | ||
833177a4 | 2175 | loc->cond_bytecode.reset (); |
b775012e LM |
2176 | } |
2177 | } | |
2178 | } | |
2179 | ||
2180 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2181 | for this location's address. */ | |
2182 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2183 | { | |
2184 | loc = (*loc2p); | |
2185 | if (loc->cond | |
2186 | && is_breakpoint (loc->owner) | |
2187 | && loc->pspace->num == bl->pspace->num | |
2188 | && loc->owner->enable_state == bp_enabled | |
2189 | && loc->enabled) | |
3cde5c42 PA |
2190 | { |
2191 | /* Add the condition to the vector. This will be used later | |
2192 | to send the conditions to the target. */ | |
2193 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2194 | } | |
b775012e LM |
2195 | } |
2196 | ||
2197 | return; | |
2198 | } | |
2199 | ||
d3ce09f5 SS |
2200 | /* Parses a command described by string CMD into an agent expression |
2201 | bytecode suitable for evaluation by the bytecode interpreter. | |
2202 | Return NULL if there was any error during parsing. */ | |
2203 | ||
833177a4 | 2204 | static agent_expr_up |
d3ce09f5 SS |
2205 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2206 | { | |
bbc13ae3 KS |
2207 | const char *cmdrest; |
2208 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2209 | struct gdbarch *gdbarch = get_current_arch (); |
2210 | ||
833177a4 | 2211 | if (cmd == NULL) |
d3ce09f5 SS |
2212 | return NULL; |
2213 | ||
2214 | cmdrest = cmd; | |
2215 | ||
2216 | if (*cmdrest == ',') | |
2217 | ++cmdrest; | |
f1735a53 | 2218 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2219 | |
2220 | if (*cmdrest++ != '"') | |
2221 | error (_("No format string following the location")); | |
2222 | ||
2223 | format_start = cmdrest; | |
2224 | ||
8e481c3b | 2225 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2226 | |
2227 | format_end = cmdrest; | |
2228 | ||
2229 | if (*cmdrest++ != '"') | |
2230 | error (_("Bad format string, non-terminated '\"'.")); | |
2231 | ||
f1735a53 | 2232 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2233 | |
2234 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2235 | error (_("Invalid argument syntax")); | |
2236 | ||
2237 | if (*cmdrest == ',') | |
2238 | cmdrest++; | |
f1735a53 | 2239 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2240 | |
2241 | /* For each argument, make an expression. */ | |
2242 | ||
8e481c3b | 2243 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2244 | while (*cmdrest != '\0') |
2245 | { | |
bbc13ae3 | 2246 | const char *cmd1; |
d3ce09f5 SS |
2247 | |
2248 | cmd1 = cmdrest; | |
4d01a485 | 2249 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2250 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2251 | cmdrest = cmd1; |
2252 | if (*cmdrest == ',') | |
2253 | ++cmdrest; | |
2254 | } | |
2255 | ||
833177a4 PA |
2256 | agent_expr_up aexpr; |
2257 | ||
d3ce09f5 SS |
2258 | /* We don't want to stop processing, so catch any errors |
2259 | that may show up. */ | |
a70b8144 | 2260 | try |
d3ce09f5 | 2261 | { |
036e657b JB |
2262 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2263 | format_start, format_end - format_start, | |
8e481c3b | 2264 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2265 | } |
230d2906 | 2266 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2267 | { |
2268 | /* If we got here, it means the command could not be parsed to a valid | |
2269 | bytecode expression and thus can't be evaluated on the target's side. | |
2270 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2271 | } |
492d29ea | 2272 | |
d3ce09f5 SS |
2273 | /* We have a valid agent expression, return it. */ |
2274 | return aexpr; | |
2275 | } | |
2276 | ||
2277 | /* Based on location BL, create a list of breakpoint commands to be | |
2278 | passed on to the target. If we have duplicated locations with | |
2279 | different commands, we will add any such to the list. */ | |
2280 | ||
2281 | static void | |
2282 | build_target_command_list (struct bp_location *bl) | |
2283 | { | |
2284 | struct bp_location **locp = NULL, **loc2p; | |
2285 | int null_command_or_parse_error = 0; | |
2286 | int modified = bl->needs_update; | |
2287 | struct bp_location *loc; | |
2288 | ||
3cde5c42 PA |
2289 | /* Clear commands left over from a previous insert. */ |
2290 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2291 | |
41fac0cf | 2292 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2293 | return; |
2294 | ||
41fac0cf PA |
2295 | /* For now, limit to agent-style dprintf breakpoints. */ |
2296 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2297 | return; |
2298 | ||
41fac0cf PA |
2299 | /* For now, if we have any duplicate location that isn't a dprintf, |
2300 | don't install the target-side commands, as that would make the | |
2301 | breakpoint not be reported to the core, and we'd lose | |
2302 | control. */ | |
2303 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2304 | { | |
2305 | loc = (*loc2p); | |
2306 | if (is_breakpoint (loc->owner) | |
2307 | && loc->pspace->num == bl->pspace->num | |
2308 | && loc->owner->type != bp_dprintf) | |
2309 | return; | |
2310 | } | |
2311 | ||
d3ce09f5 SS |
2312 | /* Do a first pass to check for locations with no assigned |
2313 | conditions or conditions that fail to parse to a valid agent expression | |
2314 | bytecode. If any of these happen, then it's no use to send conditions | |
2315 | to the target since this location will always trigger and generate a | |
2316 | response back to GDB. */ | |
2317 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2318 | { | |
2319 | loc = (*loc2p); | |
2320 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2321 | { | |
2322 | if (modified) | |
2323 | { | |
d3ce09f5 SS |
2324 | /* Re-parse the commands since something changed. In that |
2325 | case we already freed the command bytecodes (see | |
2326 | force_breakpoint_reinsertion). We just | |
2327 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2328 | loc->cmd_bytecode |
2329 | = parse_cmd_to_aexpr (bl->address, | |
2330 | loc->owner->extra_string); | |
d3ce09f5 SS |
2331 | } |
2332 | ||
2333 | /* If we have a NULL bytecode expression, it means something | |
2334 | went wrong or we have a null command expression. */ | |
2335 | if (!loc->cmd_bytecode) | |
2336 | { | |
2337 | null_command_or_parse_error = 1; | |
2338 | break; | |
2339 | } | |
2340 | } | |
2341 | } | |
2342 | ||
2343 | /* If anything failed, then we're not doing target-side commands, | |
2344 | and so clean up. */ | |
2345 | if (null_command_or_parse_error) | |
2346 | { | |
2347 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2348 | { | |
2349 | loc = (*loc2p); | |
2350 | if (is_breakpoint (loc->owner) | |
2351 | && loc->pspace->num == bl->pspace->num) | |
2352 | { | |
2353 | /* Only go as far as the first NULL bytecode is | |
2354 | located. */ | |
40fb6c5e | 2355 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2356 | return; |
2357 | ||
833177a4 | 2358 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2359 | } |
2360 | } | |
2361 | } | |
2362 | ||
2363 | /* No NULL commands or failed bytecode generation. Build a command list | |
2364 | for this location's address. */ | |
2365 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2366 | { | |
2367 | loc = (*loc2p); | |
2368 | if (loc->owner->extra_string | |
2369 | && is_breakpoint (loc->owner) | |
2370 | && loc->pspace->num == bl->pspace->num | |
2371 | && loc->owner->enable_state == bp_enabled | |
2372 | && loc->enabled) | |
3cde5c42 PA |
2373 | { |
2374 | /* Add the command to the vector. This will be used later | |
2375 | to send the commands to the target. */ | |
2376 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2377 | } | |
d3ce09f5 SS |
2378 | } |
2379 | ||
2380 | bl->target_info.persist = 0; | |
2381 | /* Maybe flag this location as persistent. */ | |
2382 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2383 | bl->target_info.persist = 1; | |
2384 | } | |
2385 | ||
833b7ab5 YQ |
2386 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2387 | of breakpoint according to ADDR except single-step breakpoint. | |
2388 | Get the kind of single-step breakpoint according to the current | |
2389 | registers state. */ | |
cd6c3b4f YQ |
2390 | |
2391 | static int | |
2392 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2393 | { | |
833b7ab5 YQ |
2394 | if (bl->owner->type == bp_single_step) |
2395 | { | |
2396 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2397 | struct regcache *regcache; | |
2398 | ||
00431a78 | 2399 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2400 | |
2401 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2402 | regcache, addr); | |
2403 | } | |
2404 | else | |
2405 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2406 | } |
2407 | ||
35df4500 TJB |
2408 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2409 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2410 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2411 | Returns 0 for success, 1 if the bp_location type is not supported or |
2412 | -1 for failure. | |
879bfdc2 | 2413 | |
4a64f543 MS |
2414 | NOTE drow/2003-09-09: This routine could be broken down to an |
2415 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2416 | static int |
35df4500 | 2417 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2418 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2419 | int *disabled_breaks, |
dd61ec5c MW |
2420 | int *hw_breakpoint_error, |
2421 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2422 | { |
cc06b668 | 2423 | gdb_exception bp_excpt; |
879bfdc2 | 2424 | |
b775012e | 2425 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2426 | return 0; |
2427 | ||
35c63cd8 JB |
2428 | /* Note we don't initialize bl->target_info, as that wipes out |
2429 | the breakpoint location's shadow_contents if the breakpoint | |
2430 | is still inserted at that location. This in turn breaks | |
2431 | target_read_memory which depends on these buffers when | |
2432 | a memory read is requested at the breakpoint location: | |
2433 | Once the target_info has been wiped, we fail to see that | |
2434 | we have a breakpoint inserted at that address and thus | |
2435 | read the breakpoint instead of returning the data saved in | |
2436 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2437 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2438 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2439 | bl->target_info.length = bl->length; |
8181d85f | 2440 | |
b775012e LM |
2441 | /* When working with target-side conditions, we must pass all the conditions |
2442 | for the same breakpoint address down to the target since GDB will not | |
2443 | insert those locations. With a list of breakpoint conditions, the target | |
2444 | can decide when to stop and notify GDB. */ | |
2445 | ||
2446 | if (is_breakpoint (bl->owner)) | |
2447 | { | |
2448 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2449 | build_target_command_list (bl); |
2450 | /* Reset the modification marker. */ | |
b775012e LM |
2451 | bl->needs_update = 0; |
2452 | } | |
2453 | ||
35df4500 TJB |
2454 | if (bl->loc_type == bp_loc_software_breakpoint |
2455 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2456 | { |
35df4500 | 2457 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2458 | { |
2459 | /* If the explicitly specified breakpoint type | |
2460 | is not hardware breakpoint, check the memory map to see | |
2461 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2462 | |
765dc015 VP |
2463 | Two important cases are: |
2464 | - location type is not hardware breakpoint, memory | |
2465 | is readonly. We change the type of the location to | |
2466 | hardware breakpoint. | |
4a64f543 MS |
2467 | - location type is hardware breakpoint, memory is |
2468 | read-write. This means we've previously made the | |
2469 | location hardware one, but then the memory map changed, | |
2470 | so we undo. | |
765dc015 | 2471 | |
4a64f543 MS |
2472 | When breakpoints are removed, remove_breakpoints will use |
2473 | location types we've just set here, the only possible | |
2474 | problem is that memory map has changed during running | |
2475 | program, but it's not going to work anyway with current | |
2476 | gdb. */ | |
765dc015 | 2477 | struct mem_region *mr |
0d5ed153 | 2478 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2479 | |
2480 | if (mr) | |
2481 | { | |
2482 | if (automatic_hardware_breakpoints) | |
2483 | { | |
765dc015 VP |
2484 | enum bp_loc_type new_type; |
2485 | ||
2486 | if (mr->attrib.mode != MEM_RW) | |
2487 | new_type = bp_loc_hardware_breakpoint; | |
2488 | else | |
2489 | new_type = bp_loc_software_breakpoint; | |
2490 | ||
35df4500 | 2491 | if (new_type != bl->loc_type) |
765dc015 VP |
2492 | { |
2493 | static int said = 0; | |
cc59ec59 | 2494 | |
35df4500 | 2495 | bl->loc_type = new_type; |
765dc015 VP |
2496 | if (!said) |
2497 | { | |
3e43a32a MS |
2498 | fprintf_filtered (gdb_stdout, |
2499 | _("Note: automatically using " | |
2500 | "hardware breakpoints for " | |
2501 | "read-only addresses.\n")); | |
765dc015 VP |
2502 | said = 1; |
2503 | } | |
2504 | } | |
2505 | } | |
35df4500 | 2506 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2507 | && mr->attrib.mode != MEM_RW) |
2508 | { | |
2509 | fprintf_unfiltered (tmp_error_stream, | |
2510 | _("Cannot insert breakpoint %d.\n" | |
2511 | "Cannot set software breakpoint " | |
2512 | "at read-only address %s\n"), | |
2513 | bl->owner->number, | |
2514 | paddress (bl->gdbarch, bl->address)); | |
2515 | return 1; | |
2516 | } | |
765dc015 VP |
2517 | } |
2518 | } | |
2519 | ||
879bfdc2 DJ |
2520 | /* First check to see if we have to handle an overlay. */ |
2521 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2522 | || bl->section == NULL |
2523 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2524 | { |
2525 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2526 | try |
dd61ec5c | 2527 | { |
0000e5cc PA |
2528 | int val; |
2529 | ||
dd61ec5c | 2530 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2531 | if (val) |
688fca4f | 2532 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2533 | } |
94aeb44b | 2534 | catch (gdb_exception &e) |
dd61ec5c | 2535 | { |
94aeb44b | 2536 | bp_excpt = std::move (e); |
dd61ec5c | 2537 | } |
879bfdc2 DJ |
2538 | } |
2539 | else | |
2540 | { | |
4a64f543 | 2541 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2542 | Shall we set a breakpoint at the LMA? */ |
2543 | if (!overlay_events_enabled) | |
2544 | { | |
2545 | /* Yes -- overlay event support is not active, | |
2546 | so we must try to set a breakpoint at the LMA. | |
2547 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2548 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2549 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2550 | bl->owner->number); |
879bfdc2 DJ |
2551 | else |
2552 | { | |
35df4500 TJB |
2553 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2554 | bl->section); | |
879bfdc2 | 2555 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2556 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2557 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2558 | |
2559 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2560 | try |
0000e5cc PA |
2561 | { |
2562 | int val; | |
2563 | ||
579c6ad9 | 2564 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2565 | = breakpoint_kind (bl, &addr); |
2566 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2567 | val = target_insert_breakpoint (bl->gdbarch, |
2568 | &bl->overlay_target_info); | |
2569 | if (val) | |
688fca4f PA |
2570 | bp_excpt |
2571 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2572 | } |
94aeb44b | 2573 | catch (gdb_exception &e) |
0000e5cc | 2574 | { |
94aeb44b | 2575 | bp_excpt = std::move (e); |
0000e5cc PA |
2576 | } |
2577 | ||
688fca4f | 2578 | if (bp_excpt.reason != 0) |
99361f52 | 2579 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2580 | "Overlay breakpoint %d " |
2581 | "failed: in ROM?\n", | |
35df4500 | 2582 | bl->owner->number); |
879bfdc2 DJ |
2583 | } |
2584 | } | |
2585 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2586 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2587 | { |
2588 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2589 | try |
dd61ec5c | 2590 | { |
0000e5cc PA |
2591 | int val; |
2592 | ||
dd61ec5c | 2593 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2594 | if (val) |
688fca4f | 2595 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2596 | } |
94aeb44b | 2597 | catch (gdb_exception &e) |
dd61ec5c | 2598 | { |
94aeb44b | 2599 | bp_excpt = std::move (e); |
dd61ec5c | 2600 | } |
879bfdc2 DJ |
2601 | } |
2602 | else | |
2603 | { | |
2604 | /* No. This breakpoint will not be inserted. | |
2605 | No error, but do not mark the bp as 'inserted'. */ | |
2606 | return 0; | |
2607 | } | |
2608 | } | |
2609 | ||
688fca4f | 2610 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2611 | { |
2612 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2613 | |
2614 | /* In some cases, we might not be able to insert a | |
2615 | breakpoint in a shared library that has already been | |
2616 | removed, but we have not yet processed the shlib unload | |
2617 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2618 | breakpoint insertion themselves can't tell why the |
2619 | breakpoint insertion failed (e.g., the remote target | |
2620 | doesn't define error codes), so we must treat generic | |
2621 | errors as memory errors. */ | |
688fca4f PA |
2622 | if (bp_excpt.reason == RETURN_ERROR |
2623 | && (bp_excpt.error == GENERIC_ERROR | |
2624 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2625 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2626 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2627 | || shared_objfile_contains_address_p (bl->pspace, |
2628 | bl->address))) | |
879bfdc2 | 2629 | { |
4a64f543 | 2630 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2631 | bl->shlib_disabled = 1; |
76727919 | 2632 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2633 | if (!*disabled_breaks) |
2634 | { | |
2635 | fprintf_unfiltered (tmp_error_stream, | |
2636 | "Cannot insert breakpoint %d.\n", | |
2637 | bl->owner->number); | |
2638 | fprintf_unfiltered (tmp_error_stream, | |
2639 | "Temporarily disabling shared " | |
2640 | "library breakpoints:\n"); | |
2641 | } | |
2642 | *disabled_breaks = 1; | |
879bfdc2 | 2643 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2644 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2645 | return 0; |
879bfdc2 DJ |
2646 | } |
2647 | else | |
879bfdc2 | 2648 | { |
35df4500 | 2649 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2650 | { |
0000e5cc | 2651 | *hw_breakpoint_error = 1; |
688fca4f | 2652 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2653 | fprintf_unfiltered (tmp_error_stream, |
2654 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2655 | bl->owner->number, |
2656 | bp_excpt.message ? ":" : ".\n"); | |
2657 | if (bp_excpt.message != NULL) | |
2658 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2659 | bp_excpt.what ()); |
879bfdc2 DJ |
2660 | } |
2661 | else | |
2662 | { | |
688fca4f | 2663 | if (bp_excpt.message == NULL) |
0000e5cc | 2664 | { |
1ccbe998 | 2665 | std::string message |
0000e5cc PA |
2666 | = memory_error_message (TARGET_XFER_E_IO, |
2667 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2668 | |
2669 | fprintf_unfiltered (tmp_error_stream, | |
2670 | "Cannot insert breakpoint %d.\n" | |
2671 | "%s\n", | |
1ccbe998 | 2672 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2673 | } |
2674 | else | |
2675 | { | |
2676 | fprintf_unfiltered (tmp_error_stream, | |
2677 | "Cannot insert breakpoint %d: %s\n", | |
2678 | bl->owner->number, | |
3d6e9d23 | 2679 | bp_excpt.what ()); |
0000e5cc | 2680 | } |
879bfdc2 | 2681 | } |
0000e5cc | 2682 | return 1; |
879bfdc2 DJ |
2683 | |
2684 | } | |
2685 | } | |
2686 | else | |
35df4500 | 2687 | bl->inserted = 1; |
879bfdc2 | 2688 | |
0000e5cc | 2689 | return 0; |
879bfdc2 DJ |
2690 | } |
2691 | ||
35df4500 | 2692 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2693 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2694 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2695 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2696 | { |
0000e5cc PA |
2697 | int val; |
2698 | ||
77b06cd7 TJB |
2699 | gdb_assert (bl->owner->ops != NULL |
2700 | && bl->owner->ops->insert_location != NULL); | |
2701 | ||
2702 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2703 | |
2704 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2705 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2706 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2707 | { |
2708 | struct bp_location *loc, **loc_temp; | |
2709 | ||
2710 | /* But don't try to insert it, if there's already another | |
2711 | hw_access location that would be considered a duplicate | |
2712 | of this one. */ | |
2713 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2714 | if (loc != bl |
85d721b8 | 2715 | && loc->watchpoint_type == hw_access |
35df4500 | 2716 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2717 | { |
35df4500 TJB |
2718 | bl->duplicate = 1; |
2719 | bl->inserted = 1; | |
2720 | bl->target_info = loc->target_info; | |
2721 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2722 | val = 0; |
2723 | break; | |
2724 | } | |
2725 | ||
2726 | if (val == 1) | |
2727 | { | |
77b06cd7 TJB |
2728 | bl->watchpoint_type = hw_access; |
2729 | val = bl->owner->ops->insert_location (bl); | |
2730 | ||
2731 | if (val) | |
2732 | /* Back to the original value. */ | |
2733 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2734 | } |
2735 | } | |
2736 | ||
35df4500 | 2737 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2738 | } |
2739 | ||
35df4500 | 2740 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2741 | { |
0000e5cc PA |
2742 | int val; |
2743 | ||
77b06cd7 TJB |
2744 | gdb_assert (bl->owner->ops != NULL |
2745 | && bl->owner->ops->insert_location != NULL); | |
2746 | ||
2747 | val = bl->owner->ops->insert_location (bl); | |
2748 | if (val) | |
2749 | { | |
2750 | bl->owner->enable_state = bp_disabled; | |
2751 | ||
2752 | if (val == 1) | |
2753 | warning (_("\ | |
2754 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2755 | of catchpoint."), bl->owner->number); | |
2756 | else | |
2757 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2758 | } | |
2759 | ||
2760 | bl->inserted = (val == 0); | |
1640b821 DJ |
2761 | |
2762 | /* We've already printed an error message if there was a problem | |
2763 | inserting this catchpoint, and we've disabled the catchpoint, | |
2764 | so just return success. */ | |
2765 | return 0; | |
879bfdc2 DJ |
2766 | } |
2767 | ||
2768 | return 0; | |
2769 | } | |
2770 | ||
6c95b8df PA |
2771 | /* This function is called when program space PSPACE is about to be |
2772 | deleted. It takes care of updating breakpoints to not reference | |
2773 | PSPACE anymore. */ | |
2774 | ||
2775 | void | |
2776 | breakpoint_program_space_exit (struct program_space *pspace) | |
2777 | { | |
2778 | struct breakpoint *b, *b_temp; | |
876fa593 | 2779 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2780 | |
2781 | /* Remove any breakpoint that was set through this program space. */ | |
2782 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2783 | { | |
2784 | if (b->pspace == pspace) | |
2785 | delete_breakpoint (b); | |
2786 | } | |
2787 | ||
2788 | /* Breakpoints set through other program spaces could have locations | |
2789 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2790 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2791 | { |
2792 | struct bp_location *tmp; | |
2793 | ||
2794 | if (loc->pspace == pspace) | |
2795 | { | |
2bdf28a0 | 2796 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2797 | if (loc->owner->loc == loc) |
2798 | loc->owner->loc = loc->next; | |
2799 | else | |
2800 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2801 | if (tmp->next == loc) | |
2802 | { | |
2803 | tmp->next = loc->next; | |
2804 | break; | |
2805 | } | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | /* Now update the global location list to permanently delete the | |
2810 | removed locations above. */ | |
44702360 | 2811 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2812 | } |
2813 | ||
74960c60 VP |
2814 | /* Make sure all breakpoints are inserted in inferior. |
2815 | Throws exception on any error. | |
2816 | A breakpoint that is already inserted won't be inserted | |
2817 | again, so calling this function twice is safe. */ | |
2818 | void | |
2819 | insert_breakpoints (void) | |
2820 | { | |
2821 | struct breakpoint *bpt; | |
2822 | ||
2823 | ALL_BREAKPOINTS (bpt) | |
2824 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2825 | { |
2826 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2827 | ||
2828 | update_watchpoint (w, 0 /* don't reparse. */); | |
2829 | } | |
74960c60 | 2830 | |
04086b45 PA |
2831 | /* Updating watchpoints creates new locations, so update the global |
2832 | location list. Explicitly tell ugll to insert locations and | |
2833 | ignore breakpoints_always_inserted_mode. */ | |
2834 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2835 | } |
2836 | ||
20388dd6 YQ |
2837 | /* Invoke CALLBACK for each of bp_location. */ |
2838 | ||
2839 | void | |
2840 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2841 | { | |
2842 | struct bp_location *loc, **loc_tmp; | |
2843 | ||
2844 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2845 | { | |
2846 | callback (loc, NULL); | |
2847 | } | |
2848 | } | |
2849 | ||
b775012e LM |
2850 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2851 | target. It is the case with deleting and disabling of breakpoints when using | |
2852 | always-inserted mode. */ | |
2853 | ||
2854 | static void | |
2855 | update_inserted_breakpoint_locations (void) | |
2856 | { | |
2857 | struct bp_location *bl, **blp_tmp; | |
2858 | int error_flag = 0; | |
2859 | int val = 0; | |
2860 | int disabled_breaks = 0; | |
2861 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2862 | int hw_bp_details_reported = 0; |
b775012e | 2863 | |
d7e74731 | 2864 | string_file tmp_error_stream; |
b775012e LM |
2865 | |
2866 | /* Explicitly mark the warning -- this will only be printed if | |
2867 | there was an error. */ | |
d7e74731 | 2868 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2869 | |
5ed8105e | 2870 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2871 | |
2872 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2873 | { | |
2874 | /* We only want to update software breakpoints and hardware | |
2875 | breakpoints. */ | |
2876 | if (!is_breakpoint (bl->owner)) | |
2877 | continue; | |
2878 | ||
2879 | /* We only want to update locations that are already inserted | |
2880 | and need updating. This is to avoid unwanted insertion during | |
2881 | deletion of breakpoints. */ | |
4daf1902 | 2882 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2883 | continue; |
2884 | ||
2885 | switch_to_program_space_and_thread (bl->pspace); | |
2886 | ||
2887 | /* For targets that support global breakpoints, there's no need | |
2888 | to select an inferior to insert breakpoint to. In fact, even | |
2889 | if we aren't attached to any process yet, we should still | |
2890 | insert breakpoints. */ | |
f5656ead | 2891 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
5b6d1e4f | 2892 | && (inferior_ptid == null_ptid || !target_has_execution)) |
b775012e LM |
2893 | continue; |
2894 | ||
d7e74731 | 2895 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2896 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2897 | if (val) |
2898 | error_flag = val; | |
2899 | } | |
2900 | ||
2901 | if (error_flag) | |
2902 | { | |
223ffa71 | 2903 | target_terminal::ours_for_output (); |
b775012e LM |
2904 | error_stream (tmp_error_stream); |
2905 | } | |
b775012e LM |
2906 | } |
2907 | ||
c30eee59 | 2908 | /* Used when starting or continuing the program. */ |
c906108c | 2909 | |
74960c60 VP |
2910 | static void |
2911 | insert_breakpoint_locations (void) | |
c906108c | 2912 | { |
a5606eee | 2913 | struct breakpoint *bpt; |
35df4500 | 2914 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2915 | int error_flag = 0; |
c906108c | 2916 | int val = 0; |
3fbb6ffa | 2917 | int disabled_breaks = 0; |
81d0cc19 | 2918 | int hw_breakpoint_error = 0; |
dd61ec5c | 2919 | int hw_bp_error_explained_already = 0; |
c906108c | 2920 | |
d7e74731 PA |
2921 | string_file tmp_error_stream; |
2922 | ||
81d0cc19 GS |
2923 | /* Explicitly mark the warning -- this will only be printed if |
2924 | there was an error. */ | |
d7e74731 | 2925 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2926 | |
5ed8105e | 2927 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2928 | |
35df4500 | 2929 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2930 | { |
b775012e | 2931 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2932 | continue; |
2933 | ||
4a64f543 MS |
2934 | /* There is no point inserting thread-specific breakpoints if |
2935 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2936 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2937 | if (bl->owner->thread != -1 |
5d5658a1 | 2938 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2939 | continue; |
2940 | ||
35df4500 | 2941 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2942 | |
2943 | /* For targets that support global breakpoints, there's no need | |
2944 | to select an inferior to insert breakpoint to. In fact, even | |
2945 | if we aren't attached to any process yet, we should still | |
2946 | insert breakpoints. */ | |
f5656ead | 2947 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
5b6d1e4f | 2948 | && (inferior_ptid == null_ptid || !target_has_execution)) |
6c95b8df PA |
2949 | continue; |
2950 | ||
d7e74731 | 2951 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2952 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2953 | if (val) |
eacd795a | 2954 | error_flag = val; |
879bfdc2 | 2955 | } |
c906108c | 2956 | |
4a64f543 MS |
2957 | /* If we failed to insert all locations of a watchpoint, remove |
2958 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2959 | ALL_BREAKPOINTS (bpt) |
2960 | { | |
2961 | int some_failed = 0; | |
2962 | struct bp_location *loc; | |
2963 | ||
2964 | if (!is_hardware_watchpoint (bpt)) | |
2965 | continue; | |
2966 | ||
d6b74ac4 | 2967 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2968 | continue; |
74960c60 VP |
2969 | |
2970 | if (bpt->disposition == disp_del_at_next_stop) | |
2971 | continue; | |
a5606eee VP |
2972 | |
2973 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2974 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2975 | { |
2976 | some_failed = 1; | |
2977 | break; | |
2978 | } | |
2979 | if (some_failed) | |
2980 | { | |
2981 | for (loc = bpt->loc; loc; loc = loc->next) | |
2982 | if (loc->inserted) | |
834c0d03 | 2983 | remove_breakpoint (loc); |
a5606eee VP |
2984 | |
2985 | hw_breakpoint_error = 1; | |
d7e74731 PA |
2986 | tmp_error_stream.printf ("Could not insert " |
2987 | "hardware watchpoint %d.\n", | |
2988 | bpt->number); | |
eacd795a | 2989 | error_flag = -1; |
a5606eee VP |
2990 | } |
2991 | } | |
2992 | ||
eacd795a | 2993 | if (error_flag) |
81d0cc19 GS |
2994 | { |
2995 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2996 | message about possibly exhausted resources. */ | |
dd61ec5c | 2997 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 2998 | { |
d7e74731 | 2999 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3000 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3001 | } |
223ffa71 | 3002 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3003 | error_stream (tmp_error_stream); |
3004 | } | |
c906108c SS |
3005 | } |
3006 | ||
c30eee59 TJB |
3007 | /* Used when the program stops. |
3008 | Returns zero if successful, or non-zero if there was a problem | |
3009 | removing a breakpoint location. */ | |
3010 | ||
c906108c | 3011 | int |
fba45db2 | 3012 | remove_breakpoints (void) |
c906108c | 3013 | { |
35df4500 | 3014 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3015 | int val = 0; |
c906108c | 3016 | |
35df4500 | 3017 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3018 | { |
1e4d1764 | 3019 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3020 | val |= remove_breakpoint (bl); |
c5aa993b | 3021 | } |
3a1bae8e | 3022 | return val; |
c906108c SS |
3023 | } |
3024 | ||
49fa26b0 PA |
3025 | /* When a thread exits, remove breakpoints that are related to |
3026 | that thread. */ | |
3027 | ||
3028 | static void | |
3029 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3030 | { | |
3031 | struct breakpoint *b, *b_tmp; | |
3032 | ||
3033 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3034 | { | |
5d5658a1 | 3035 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3036 | { |
3037 | b->disposition = disp_del_at_next_stop; | |
3038 | ||
3039 | printf_filtered (_("\ | |
43792cf0 PA |
3040 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3041 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3042 | |
3043 | /* Hide it from the user. */ | |
3044 | b->number = 0; | |
3045 | } | |
3046 | } | |
3047 | } | |
3048 | ||
f3869b1a | 3049 | /* See breakpoint.h. */ |
6c95b8df | 3050 | |
f3869b1a | 3051 | void |
00431a78 | 3052 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3053 | { |
35df4500 | 3054 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3055 | int val; |
6c95b8df | 3056 | |
35df4500 | 3057 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3058 | { |
35df4500 | 3059 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3060 | continue; |
3061 | ||
fc126975 | 3062 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3063 | { |
834c0d03 | 3064 | val = remove_breakpoint (bl); |
6c95b8df | 3065 | if (val != 0) |
f3869b1a | 3066 | return; |
6c95b8df PA |
3067 | } |
3068 | } | |
6c95b8df PA |
3069 | } |
3070 | ||
e58b0e63 PA |
3071 | static int internal_breakpoint_number = -1; |
3072 | ||
84f4c1fe PM |
3073 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3074 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3075 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3076 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3077 | breakpoint_count and that value incremented. Internal breakpoints |
3078 | do not set the internal var bpnum. */ | |
3079 | static void | |
3080 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3081 | { | |
3082 | if (internal) | |
3083 | b->number = internal_breakpoint_number--; | |
3084 | else | |
3085 | { | |
3086 | set_breakpoint_count (breakpoint_count + 1); | |
3087 | b->number = breakpoint_count; | |
3088 | } | |
3089 | } | |
3090 | ||
e62c965a | 3091 | static struct breakpoint * |
a6d9a66e | 3092 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3093 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3094 | const struct breakpoint_ops *ops) |
e62c965a | 3095 | { |
51abb421 | 3096 | symtab_and_line sal; |
e62c965a PP |
3097 | sal.pc = address; |
3098 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3099 | sal.pspace = current_program_space; |
e62c965a | 3100 | |
51abb421 | 3101 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3102 | b->number = internal_breakpoint_number--; |
3103 | b->disposition = disp_donttouch; | |
3104 | ||
3105 | return b; | |
3106 | } | |
3107 | ||
17450429 PP |
3108 | static const char *const longjmp_names[] = |
3109 | { | |
3110 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3111 | }; | |
3112 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3113 | ||
3114 | /* Per-objfile data private to breakpoint.c. */ | |
3115 | struct breakpoint_objfile_data | |
3116 | { | |
3117 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3118 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3119 | |
3120 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3121 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3122 | |
28106bc2 | 3123 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3124 | int longjmp_searched = 0; |
28106bc2 | 3125 | |
45461e0d SM |
3126 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3127 | references. */ | |
3128 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3129 | |
17450429 | 3130 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3131 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3132 | |
3133 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3134 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3135 | |
3136 | /* True if we have looked for exception probes. */ | |
43dce439 | 3137 | int exception_searched = 0; |
28106bc2 | 3138 | |
45461e0d SM |
3139 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3140 | references. */ | |
3141 | std::vector<probe *> exception_probes; | |
17450429 PP |
3142 | }; |
3143 | ||
51d3063a TT |
3144 | static const struct objfile_key<breakpoint_objfile_data> |
3145 | breakpoint_objfile_key; | |
17450429 PP |
3146 | |
3147 | /* Minimal symbol not found sentinel. */ | |
3148 | static struct minimal_symbol msym_not_found; | |
3149 | ||
3150 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3151 | ||
3152 | static int | |
3153 | msym_not_found_p (const struct minimal_symbol *msym) | |
3154 | { | |
3155 | return msym == &msym_not_found; | |
3156 | } | |
3157 | ||
3158 | /* Return per-objfile data needed by breakpoint.c. | |
3159 | Allocate the data if necessary. */ | |
3160 | ||
3161 | static struct breakpoint_objfile_data * | |
3162 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3163 | { | |
3164 | struct breakpoint_objfile_data *bp_objfile_data; | |
3165 | ||
51d3063a | 3166 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3167 | if (bp_objfile_data == NULL) |
51d3063a | 3168 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3169 | return bp_objfile_data; |
3170 | } | |
3171 | ||
e62c965a | 3172 | static void |
af02033e | 3173 | create_overlay_event_breakpoint (void) |
e62c965a | 3174 | { |
af02033e | 3175 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3176 | |
2030c079 | 3177 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3178 | { |
3179 | struct breakpoint *b; | |
17450429 PP |
3180 | struct breakpoint_objfile_data *bp_objfile_data; |
3181 | CORE_ADDR addr; | |
67994074 | 3182 | struct explicit_location explicit_loc; |
69de3c6a | 3183 | |
17450429 PP |
3184 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3185 | ||
3b7344d5 | 3186 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3187 | continue; |
3188 | ||
3b7344d5 | 3189 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3190 | { |
3b7344d5 | 3191 | struct bound_minimal_symbol m; |
17450429 PP |
3192 | |
3193 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3194 | if (m.minsym == NULL) |
17450429 PP |
3195 | { |
3196 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3197 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3198 | continue; |
3199 | } | |
3200 | bp_objfile_data->overlay_msym = m; | |
3201 | } | |
e62c965a | 3202 | |
77e371c0 | 3203 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
08feed99 | 3204 | b = create_internal_breakpoint (objfile->arch (), addr, |
06edf0c0 PA |
3205 | bp_overlay_event, |
3206 | &internal_breakpoint_ops); | |
67994074 KS |
3207 | initialize_explicit_location (&explicit_loc); |
3208 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3209 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3210 | |
69de3c6a PP |
3211 | if (overlay_debugging == ovly_auto) |
3212 | { | |
3213 | b->enable_state = bp_enabled; | |
3214 | overlay_events_enabled = 1; | |
3215 | } | |
3216 | else | |
3217 | { | |
3218 | b->enable_state = bp_disabled; | |
3219 | overlay_events_enabled = 0; | |
3220 | } | |
e62c965a | 3221 | } |
e62c965a PP |
3222 | } |
3223 | ||
0fd8e87f | 3224 | static void |
af02033e | 3225 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3226 | { |
5ed8105e | 3227 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3228 | |
94c93c35 TT |
3229 | for (struct program_space *pspace : program_spaces) |
3230 | { | |
3231 | set_current_program_space (pspace); | |
af02033e | 3232 | |
94c93c35 TT |
3233 | for (objfile *objfile : current_program_space->objfiles ()) |
3234 | { | |
3235 | int i; | |
3236 | struct gdbarch *gdbarch; | |
3237 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3238 | |
94c93c35 | 3239 | gdbarch = objfile->arch (); |
0fd8e87f | 3240 | |
94c93c35 | 3241 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3242 | |
94c93c35 TT |
3243 | if (!bp_objfile_data->longjmp_searched) |
3244 | { | |
3245 | std::vector<probe *> ret | |
3246 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3247 | |
94c93c35 TT |
3248 | if (!ret.empty ()) |
3249 | { | |
3250 | /* We are only interested in checking one element. */ | |
3251 | probe *p = ret[0]; | |
aed57c53 | 3252 | |
94c93c35 TT |
3253 | if (!p->can_evaluate_arguments ()) |
3254 | { | |
3255 | /* We cannot use the probe interface here, | |
3256 | because it does not know how to evaluate | |
3257 | arguments. */ | |
3258 | ret.clear (); | |
3259 | } | |
3260 | } | |
3261 | bp_objfile_data->longjmp_probes = ret; | |
3262 | bp_objfile_data->longjmp_searched = 1; | |
3263 | } | |
25f9533e | 3264 | |
94c93c35 TT |
3265 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3266 | { | |
3267 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3268 | { | |
3269 | struct breakpoint *b; | |
3270 | ||
3271 | b = create_internal_breakpoint (gdbarch, | |
3272 | p->get_relocated_address (objfile), | |
3273 | bp_longjmp_master, | |
3274 | &internal_breakpoint_ops); | |
3275 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3276 | b->enable_state = bp_disabled; | |
3277 | } | |
28106bc2 | 3278 | |
94c93c35 TT |
3279 | continue; |
3280 | } | |
28106bc2 | 3281 | |
94c93c35 TT |
3282 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3283 | continue; | |
28106bc2 | 3284 | |
94c93c35 TT |
3285 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3286 | { | |
3287 | struct breakpoint *b; | |
3288 | const char *func_name; | |
3289 | CORE_ADDR addr; | |
3290 | struct explicit_location explicit_loc; | |
0fd8e87f | 3291 | |
94c93c35 TT |
3292 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3293 | continue; | |
17450429 | 3294 | |
94c93c35 TT |
3295 | func_name = longjmp_names[i]; |
3296 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3297 | { | |
3298 | struct bound_minimal_symbol m; | |
aed57c53 | 3299 | |
94c93c35 TT |
3300 | m = lookup_minimal_symbol_text (func_name, objfile); |
3301 | if (m.minsym == NULL) | |
3302 | { | |
3303 | /* Prevent future lookups in this objfile. */ | |
3304 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3305 | continue; | |
3306 | } | |
3307 | bp_objfile_data->longjmp_msym[i] = m; | |
3308 | } | |
17450429 | 3309 | |
94c93c35 TT |
3310 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3311 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3312 | &internal_breakpoint_ops); | |
3313 | initialize_explicit_location (&explicit_loc); | |
3314 | explicit_loc.function_name = ASTRDUP (func_name); | |
3315 | b->location = new_explicit_location (&explicit_loc); | |
3316 | b->enable_state = bp_disabled; | |
3317 | } | |
3318 | } | |
3319 | } | |
0fd8e87f UW |
3320 | } |
3321 | ||
af02033e | 3322 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3323 | static void |
af02033e | 3324 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3325 | { |
af02033e | 3326 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3327 | |
5ed8105e | 3328 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3329 | |
94c93c35 TT |
3330 | for (struct program_space *pspace : program_spaces) |
3331 | { | |
3332 | CORE_ADDR addr; | |
17450429 | 3333 | |
94c93c35 | 3334 | set_current_program_space (pspace); |
17450429 | 3335 | |
94c93c35 TT |
3336 | for (objfile *objfile : current_program_space->objfiles ()) |
3337 | { | |
3338 | struct breakpoint *b; | |
3339 | struct breakpoint_objfile_data *bp_objfile_data; | |
3340 | struct explicit_location explicit_loc; | |
aa7d318d | 3341 | |
94c93c35 | 3342 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3343 | |
94c93c35 TT |
3344 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3345 | continue; | |
17450429 | 3346 | |
94c93c35 TT |
3347 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3348 | { | |
3349 | struct bound_minimal_symbol m; | |
17450429 | 3350 | |
94c93c35 TT |
3351 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3352 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3353 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3354 | { | |
3355 | /* Prevent future lookups in this objfile. */ | |
3356 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3357 | continue; | |
3358 | } | |
3359 | bp_objfile_data->terminate_msym = m; | |
3360 | } | |
aa7d318d | 3361 | |
94c93c35 TT |
3362 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3363 | b = create_internal_breakpoint (objfile->arch (), addr, | |
3364 | bp_std_terminate_master, | |
3365 | &internal_breakpoint_ops); | |
3366 | initialize_explicit_location (&explicit_loc); | |
3367 | explicit_loc.function_name = ASTRDUP (func_name); | |
3368 | b->location = new_explicit_location (&explicit_loc); | |
3369 | b->enable_state = bp_disabled; | |
3370 | } | |
3371 | } | |
aa7d318d TT |
3372 | } |
3373 | ||
186c406b TT |
3374 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3375 | ||
70221824 | 3376 | static void |
186c406b TT |
3377 | create_exception_master_breakpoint (void) |
3378 | { | |
17450429 | 3379 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3380 | |
2030c079 | 3381 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3382 | { |
17450429 PP |
3383 | struct breakpoint *b; |
3384 | struct gdbarch *gdbarch; | |
3385 | struct breakpoint_objfile_data *bp_objfile_data; | |
3386 | CORE_ADDR addr; | |
67994074 | 3387 | struct explicit_location explicit_loc; |
17450429 PP |
3388 | |
3389 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3390 | ||
28106bc2 SDJ |
3391 | /* We prefer the SystemTap probe point if it exists. */ |
3392 | if (!bp_objfile_data->exception_searched) | |
3393 | { | |
45461e0d SM |
3394 | std::vector<probe *> ret |
3395 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3396 | |
45461e0d | 3397 | if (!ret.empty ()) |
25f9533e SDJ |
3398 | { |
3399 | /* We are only interested in checking one element. */ | |
45461e0d | 3400 | probe *p = ret[0]; |
25f9533e | 3401 | |
935676c9 | 3402 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3403 | { |
3404 | /* We cannot use the probe interface here, because it does | |
3405 | not know how to evaluate arguments. */ | |
45461e0d | 3406 | ret.clear (); |
25f9533e SDJ |
3407 | } |
3408 | } | |
3409 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3410 | bp_objfile_data->exception_searched = 1; |
3411 | } | |
3412 | ||
45461e0d | 3413 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3414 | { |
08feed99 | 3415 | gdbarch = objfile->arch (); |
45461e0d SM |
3416 | |
3417 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3418 | { |
729662a5 | 3419 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3420 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3421 | bp_exception_master, |
3422 | &internal_breakpoint_ops); | |
d28cd78a | 3423 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3424 | b->enable_state = bp_disabled; |
3425 | } | |
3426 | ||
3427 | continue; | |
3428 | } | |
3429 | ||
3430 | /* Otherwise, try the hook function. */ | |
3431 | ||
3b7344d5 | 3432 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3433 | continue; |
3434 | ||
08feed99 | 3435 | gdbarch = objfile->arch (); |
186c406b | 3436 | |
3b7344d5 | 3437 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3438 | { |
3b7344d5 | 3439 | struct bound_minimal_symbol debug_hook; |
186c406b | 3440 | |
17450429 | 3441 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3442 | if (debug_hook.minsym == NULL) |
17450429 | 3443 | { |
3b7344d5 | 3444 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3445 | continue; |
3446 | } | |
3447 | ||
3448 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3449 | } |
17450429 | 3450 | |
77e371c0 | 3451 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3452 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3453 | current_top_target ()); | |
06edf0c0 PA |
3454 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3455 | &internal_breakpoint_ops); | |
67994074 KS |
3456 | initialize_explicit_location (&explicit_loc); |
3457 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3458 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3459 | b->enable_state = bp_disabled; |
186c406b | 3460 | } |
186c406b TT |
3461 | } |
3462 | ||
9ef9e6a6 KS |
3463 | /* Does B have a location spec? */ |
3464 | ||
3465 | static int | |
3466 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3467 | { | |
d28cd78a | 3468 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3469 | } |
3470 | ||
c906108c | 3471 | void |
fba45db2 | 3472 | update_breakpoints_after_exec (void) |
c906108c | 3473 | { |
35df4500 | 3474 | struct breakpoint *b, *b_tmp; |
876fa593 | 3475 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3476 | |
25b22b0a PA |
3477 | /* We're about to delete breakpoints from GDB's lists. If the |
3478 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3479 | writing the breakpoints' "shadow contents" back into memory. The | |
3480 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3481 | do that. Instead, the target is responsible from marking | |
3482 | breakpoints out as soon as it detects an exec. We don't do that | |
3483 | here instead, because there may be other attempts to delete | |
3484 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3485 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3486 | if (bploc->pspace == current_program_space) |
3487 | gdb_assert (!bploc->inserted); | |
c906108c | 3488 | |
35df4500 | 3489 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3490 | { |
6c95b8df PA |
3491 | if (b->pspace != current_program_space) |
3492 | continue; | |
3493 | ||
4a64f543 | 3494 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3495 | if (b->type == bp_shlib_event) |
3496 | { | |
3497 | delete_breakpoint (b); | |
3498 | continue; | |
3499 | } | |
c906108c | 3500 | |
4a64f543 | 3501 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3502 | if (b->type == bp_jit_event) |
3503 | { | |
3504 | delete_breakpoint (b); | |
3505 | continue; | |
3506 | } | |
3507 | ||
1900040c | 3508 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3509 | as must overlay event and longjmp master breakpoints. */ |
3510 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3511 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3512 | || b->type == bp_exception_master) | |
c4093a6a JM |
3513 | { |
3514 | delete_breakpoint (b); | |
3515 | continue; | |
3516 | } | |
3517 | ||
4a64f543 | 3518 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3519 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3520 | { |
3521 | delete_breakpoint (b); | |
3522 | continue; | |
3523 | } | |
3524 | ||
7c16b83e PA |
3525 | /* Just like single-step breakpoints. */ |
3526 | if (b->type == bp_single_step) | |
3527 | { | |
3528 | delete_breakpoint (b); | |
3529 | continue; | |
3530 | } | |
3531 | ||
611c83ae PA |
3532 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3533 | after an exec. */ | |
186c406b | 3534 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3535 | || b->type == bp_longjmp_call_dummy |
186c406b | 3536 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3537 | { |
3538 | delete_breakpoint (b); | |
3539 | continue; | |
3540 | } | |
3541 | ||
ce78b96d JB |
3542 | if (b->type == bp_catchpoint) |
3543 | { | |
3544 | /* For now, none of the bp_catchpoint breakpoints need to | |
3545 | do anything at this point. In the future, if some of | |
3546 | the catchpoints need to something, we will need to add | |
3547 | a new method, and call this method from here. */ | |
3548 | continue; | |
3549 | } | |
3550 | ||
c5aa993b JM |
3551 | /* bp_finish is a special case. The only way we ought to be able |
3552 | to see one of these when an exec() has happened, is if the user | |
3553 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3554 | carries them to the call-site of the current callee, by setting | |
3555 | a temporary bp there and resuming. But in this case, the finish | |
3556 | will carry them entirely through the vfork & exec. | |
3557 | ||
3558 | We don't want to allow a bp_finish to remain inserted now. But | |
3559 | we can't safely delete it, 'cause finish_command has a handle to | |
3560 | the bp on a bpstat, and will later want to delete it. There's a | |
3561 | chance (and I've seen it happen) that if we delete the bp_finish | |
3562 | here, that its storage will get reused by the time finish_command | |
3563 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3564 | We really must allow finish_command to delete a bp_finish. | |
3565 | ||
e5dd4106 | 3566 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3567 | it's safe to delete something others may have handles to?" |
3568 | problem, what we'll do here is just uninsert the bp_finish, and | |
3569 | let finish_command delete it. | |
3570 | ||
3571 | (We know the bp_finish is "doomed" in the sense that it's | |
3572 | momentary, and will be deleted as soon as finish_command sees | |
3573 | the inferior stopped. So it doesn't matter that the bp's | |
3574 | address is probably bogus in the new a.out, unlike e.g., the | |
3575 | solib breakpoints.) */ | |
c5aa993b | 3576 | |
c5aa993b JM |
3577 | if (b->type == bp_finish) |
3578 | { | |
3579 | continue; | |
3580 | } | |
3581 | ||
3582 | /* Without a symbolic address, we have little hope of the | |
3583 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3584 | a.out. */ |
9ef9e6a6 | 3585 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3586 | { |
3587 | delete_breakpoint (b); | |
3588 | continue; | |
3589 | } | |
c5aa993b | 3590 | } |
c906108c SS |
3591 | } |
3592 | ||
3593 | int | |
d80ee84f | 3594 | detach_breakpoints (ptid_t ptid) |
c906108c | 3595 | { |
35df4500 | 3596 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3597 | int val = 0; |
2989a365 | 3598 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3599 | struct inferior *inf = current_inferior (); |
c5aa993b | 3600 | |
e99b03dc | 3601 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3602 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3603 | |
6c95b8df | 3604 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3605 | inferior_ptid = ptid; |
35df4500 | 3606 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3607 | { |
35df4500 | 3608 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3609 | continue; |
3610 | ||
bd9673a4 PW |
3611 | /* This function must physically remove breakpoints locations |
3612 | from the specified ptid, without modifying the breakpoint | |
3613 | package's state. Locations of type bp_loc_other are only | |
3614 | maintained at GDB side. So, there is no need to remove | |
3615 | these bp_loc_other locations. Moreover, removing these | |
3616 | would modify the breakpoint package's state. */ | |
3617 | if (bl->loc_type == bp_loc_other) | |
3618 | continue; | |
3619 | ||
35df4500 | 3620 | if (bl->inserted) |
b2b6a7da | 3621 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3622 | } |
d03285ec | 3623 | |
3a1bae8e | 3624 | return val; |
c906108c SS |
3625 | } |
3626 | ||
35df4500 | 3627 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3628 | Note that this is used to detach breakpoints from a child fork. |
3629 | When we get here, the child isn't in the inferior list, and neither | |
3630 | do we have objects to represent its address space --- we should | |
35df4500 | 3631 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3632 | |
c906108c | 3633 | static int |
b2b6a7da | 3634 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3635 | { |
3636 | int val; | |
c5aa993b | 3637 | |
35df4500 TJB |
3638 | /* BL is never in moribund_locations by our callers. */ |
3639 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3640 | |
74960c60 VP |
3641 | /* The type of none suggests that owner is actually deleted. |
3642 | This should not ever happen. */ | |
35df4500 | 3643 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3644 | |
35df4500 TJB |
3645 | if (bl->loc_type == bp_loc_software_breakpoint |
3646 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3647 | { |
c02f5703 MS |
3648 | /* "Normal" instruction breakpoint: either the standard |
3649 | trap-instruction bp (bp_breakpoint), or a | |
3650 | bp_hardware_breakpoint. */ | |
3651 | ||
3652 | /* First check to see if we have to handle an overlay. */ | |
3653 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3654 | || bl->section == NULL |
3655 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3656 | { |
3657 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3658 | |
3659 | /* If we're trying to uninsert a memory breakpoint that we | |
3660 | know is set in a dynamic object that is marked | |
3661 | shlib_disabled, then either the dynamic object was | |
3662 | removed with "remove-symbol-file" or with | |
3663 | "nosharedlibrary". In the former case, we don't know | |
3664 | whether another dynamic object might have loaded over the | |
3665 | breakpoint's address -- the user might well let us know | |
3666 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3667 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3668 | list of dynamically loaded objects). If we have the |
3669 | breakpoint's shadow memory, that is, this is a software | |
3670 | breakpoint managed by GDB, check whether the breakpoint | |
3671 | is still inserted in memory, to avoid overwriting wrong | |
3672 | code with stale saved shadow contents. Note that HW | |
3673 | breakpoints don't have shadow memory, as they're | |
3674 | implemented using a mechanism that is not dependent on | |
3675 | being able to modify the target's memory, and as such | |
3676 | they should always be removed. */ | |
3677 | if (bl->shlib_disabled | |
3678 | && bl->target_info.shadow_len != 0 | |
3679 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3680 | val = 0; | |
3681 | else | |
73971819 | 3682 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3683 | } |
c906108c SS |
3684 | else |
3685 | { | |
4a64f543 | 3686 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3687 | Did we set a breakpoint at the LMA? */ |
3688 | if (!overlay_events_enabled) | |
3689 | { | |
3690 | /* Yes -- overlay event support is not active, so we | |
3691 | should have set a breakpoint at the LMA. Remove it. | |
3692 | */ | |
c02f5703 MS |
3693 | /* Ignore any failures: if the LMA is in ROM, we will |
3694 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3695 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3696 | target_remove_hw_breakpoint (bl->gdbarch, | |
3697 | &bl->overlay_target_info); | |
c02f5703 | 3698 | else |
35df4500 | 3699 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3700 | &bl->overlay_target_info, |
3701 | reason); | |
c02f5703 MS |
3702 | } |
3703 | /* Did we set a breakpoint at the VMA? | |
3704 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3705 | if (bl->inserted) |
c906108c | 3706 | { |
c02f5703 MS |
3707 | /* Yes -- remove it. Previously we did not bother to |
3708 | remove the breakpoint if the section had been | |
3709 | unmapped, but let's not rely on that being safe. We | |
3710 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3711 | |
3712 | /* However, we should remove *software* breakpoints only | |
3713 | if the section is still mapped, or else we overwrite | |
3714 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3715 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3716 | || section_is_mapped (bl->section)) | |
73971819 | 3717 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3718 | else |
3719 | val = 0; | |
c906108c | 3720 | } |
c02f5703 MS |
3721 | else |
3722 | { | |
3723 | /* No -- not inserted, so no need to remove. No error. */ | |
3724 | val = 0; | |
3725 | } | |
c906108c | 3726 | } |
879d1e6b | 3727 | |
08351840 PA |
3728 | /* In some cases, we might not be able to remove a breakpoint in |
3729 | a shared library that has already been removed, but we have | |
3730 | not yet processed the shlib unload event. Similarly for an | |
3731 | unloaded add-symbol-file object - the user might not yet have | |
3732 | had the chance to remove-symbol-file it. shlib_disabled will | |
3733 | be set if the library/object has already been removed, but | |
3734 | the breakpoint hasn't been uninserted yet, e.g., after | |
3735 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3736 | always-inserted mode. */ | |
076855f9 | 3737 | if (val |
08351840 PA |
3738 | && (bl->loc_type == bp_loc_software_breakpoint |
3739 | && (bl->shlib_disabled | |
3740 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3741 | || shared_objfile_contains_address_p (bl->pspace, |
3742 | bl->address)))) | |
879d1e6b UW |
3743 | val = 0; |
3744 | ||
c906108c SS |
3745 | if (val) |
3746 | return val; | |
b2b6a7da | 3747 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3748 | } |
35df4500 | 3749 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3750 | { |
77b06cd7 TJB |
3751 | gdb_assert (bl->owner->ops != NULL |
3752 | && bl->owner->ops->remove_location != NULL); | |
3753 | ||
b2b6a7da | 3754 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3755 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3756 | |
c906108c | 3757 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3758 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3759 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3760 | bl->owner->number); |
c906108c | 3761 | } |
35df4500 TJB |
3762 | else if (bl->owner->type == bp_catchpoint |
3763 | && breakpoint_enabled (bl->owner) | |
3764 | && !bl->duplicate) | |
ce78b96d | 3765 | { |
77b06cd7 TJB |
3766 | gdb_assert (bl->owner->ops != NULL |
3767 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3768 | |
73971819 | 3769 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3770 | if (val) |
3771 | return val; | |
77b06cd7 | 3772 | |
b2b6a7da | 3773 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3774 | } |
c906108c SS |
3775 | |
3776 | return 0; | |
3777 | } | |
3778 | ||
6c95b8df | 3779 | static int |
834c0d03 | 3780 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3781 | { |
35df4500 TJB |
3782 | /* BL is never in moribund_locations by our callers. */ |
3783 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3784 | |
6c95b8df PA |
3785 | /* The type of none suggests that owner is actually deleted. |
3786 | This should not ever happen. */ | |
35df4500 | 3787 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3788 | |
5ed8105e | 3789 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3790 | |
35df4500 | 3791 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3792 | |
5ed8105e | 3793 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3794 | } |
3795 | ||
c906108c SS |
3796 | /* Clear the "inserted" flag in all breakpoints. */ |
3797 | ||
25b22b0a | 3798 | void |
fba45db2 | 3799 | mark_breakpoints_out (void) |
c906108c | 3800 | { |
35df4500 | 3801 | struct bp_location *bl, **blp_tmp; |
c906108c | 3802 | |
35df4500 | 3803 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3804 | if (bl->pspace == current_program_space) |
35df4500 | 3805 | bl->inserted = 0; |
c906108c SS |
3806 | } |
3807 | ||
53a5351d JM |
3808 | /* Clear the "inserted" flag in all breakpoints and delete any |
3809 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3810 | |
3811 | Plus other such housekeeping that has to be done for breakpoints | |
3812 | between runs. | |
3813 | ||
53a5351d JM |
3814 | Note: this function gets called at the end of a run (by |
3815 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3816 | init_wait_for_inferior). */ |
c906108c SS |
3817 | |
3818 | ||
3819 | ||
3820 | void | |
fba45db2 | 3821 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3822 | { |
35df4500 | 3823 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3824 | struct program_space *pspace = current_program_space; |
c906108c | 3825 | |
50c71eaf PA |
3826 | /* If breakpoint locations are shared across processes, then there's |
3827 | nothing to do. */ | |
f5656ead | 3828 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3829 | return; |
3830 | ||
1a853c52 | 3831 | mark_breakpoints_out (); |
075f6582 | 3832 | |
35df4500 | 3833 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3834 | { |
6c95b8df PA |
3835 | if (b->loc && b->loc->pspace != pspace) |
3836 | continue; | |
3837 | ||
c5aa993b JM |
3838 | switch (b->type) |
3839 | { | |
3840 | case bp_call_dummy: | |
e2e4d78b | 3841 | case bp_longjmp_call_dummy: |
c906108c | 3842 | |
c5aa993b | 3843 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3844 | cause problems when the inferior is rerun, so we better get |
3845 | rid of it. */ | |
3846 | ||
3847 | case bp_watchpoint_scope: | |
3848 | ||
3849 | /* Also get rid of scope breakpoints. */ | |
3850 | ||
3851 | case bp_shlib_event: | |
3852 | ||
3853 | /* Also remove solib event breakpoints. Their addresses may | |
3854 | have changed since the last time we ran the program. | |
3855 | Actually we may now be debugging against different target; | |
3856 | and so the solib backend that installed this breakpoint may | |
3857 | not be used in by the target. E.g., | |
3858 | ||
3859 | (gdb) file prog-linux | |
3860 | (gdb) run # native linux target | |
3861 | ... | |
3862 | (gdb) kill | |
3863 | (gdb) file prog-win.exe | |
3864 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3865 | */ | |
c906108c | 3866 | |
f59f708a PA |
3867 | case bp_step_resume: |
3868 | ||
3869 | /* Also remove step-resume breakpoints. */ | |
3870 | ||
7c16b83e PA |
3871 | case bp_single_step: |
3872 | ||
3873 | /* Also remove single-step breakpoints. */ | |
3874 | ||
c5aa993b JM |
3875 | delete_breakpoint (b); |
3876 | break; | |
c906108c | 3877 | |
c5aa993b JM |
3878 | case bp_watchpoint: |
3879 | case bp_hardware_watchpoint: | |
3880 | case bp_read_watchpoint: | |
3881 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3882 | { |
3883 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3884 | |
3a5c3e22 PA |
3885 | /* Likewise for watchpoints on local expressions. */ |
3886 | if (w->exp_valid_block != NULL) | |
3887 | delete_breakpoint (b); | |
63000888 | 3888 | else |
3a5c3e22 | 3889 | { |
63000888 PA |
3890 | /* Get rid of existing locations, which are no longer |
3891 | valid. New ones will be created in | |
3892 | update_watchpoint, when the inferior is restarted. | |
3893 | The next update_global_location_list call will | |
3894 | garbage collect them. */ | |
3895 | b->loc = NULL; | |
3896 | ||
3897 | if (context == inf_starting) | |
3898 | { | |
3899 | /* Reset val field to force reread of starting value in | |
3900 | insert_breakpoints. */ | |
850645cf | 3901 | w->val.reset (nullptr); |
4c1d86d9 | 3902 | w->val_valid = false; |
63000888 PA |
3903 | } |
3904 | } | |
3a5c3e22 | 3905 | } |
c5aa993b JM |
3906 | break; |
3907 | default: | |
c5aa993b JM |
3908 | break; |
3909 | } | |
3910 | } | |
1c5cfe86 PA |
3911 | |
3912 | /* Get rid of the moribund locations. */ | |
1123588c | 3913 | for (bp_location *bl : moribund_locations) |
35df4500 | 3914 | decref_bp_location (&bl); |
1123588c | 3915 | moribund_locations.clear (); |
c906108c SS |
3916 | } |
3917 | ||
6c95b8df PA |
3918 | /* These functions concern about actual breakpoints inserted in the |
3919 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3920 | we need to hop over the bkpt --- so we check for address space | |
3921 | match, not program space. */ | |
3922 | ||
c2c6d25f JM |
3923 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3924 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3925 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3926 | permanent breakpoint. | |
3927 | - When continuing from a location with an ordinary breakpoint, we | |
3928 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3929 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3930 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3931 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3932 | |
c2c6d25f | 3933 | enum breakpoint_here |
accd0bcd | 3934 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3935 | { |
35df4500 | 3936 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3937 | int any_breakpoint_here = 0; |
c906108c | 3938 | |
35df4500 | 3939 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3940 | { |
35df4500 TJB |
3941 | if (bl->loc_type != bp_loc_software_breakpoint |
3942 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3943 | continue; |
3944 | ||
f1310107 | 3945 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3946 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3947 | || bl->permanent) |
f1310107 | 3948 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3949 | { |
3950 | if (overlay_debugging | |
35df4500 TJB |
3951 | && section_is_overlay (bl->section) |
3952 | && !section_is_mapped (bl->section)) | |
075f6582 | 3953 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3954 | else if (bl->permanent) |
075f6582 DJ |
3955 | return permanent_breakpoint_here; |
3956 | else | |
3957 | any_breakpoint_here = 1; | |
3958 | } | |
3959 | } | |
c906108c | 3960 | |
f486487f | 3961 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3962 | } |
3963 | ||
d35ae833 PA |
3964 | /* See breakpoint.h. */ |
3965 | ||
3966 | int | |
accd0bcd | 3967 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
3968 | CORE_ADDR addr, ULONGEST len) |
3969 | { | |
3970 | struct bp_location *bl, **blp_tmp; | |
3971 | ||
3972 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3973 | { | |
3974 | if (bl->loc_type != bp_loc_software_breakpoint | |
3975 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
3976 | continue; | |
3977 | ||
3978 | if ((breakpoint_enabled (bl->owner) | |
3979 | || bl->permanent) | |
3980 | && breakpoint_location_address_range_overlap (bl, aspace, | |
3981 | addr, len)) | |
3982 | { | |
3983 | if (overlay_debugging | |
3984 | && section_is_overlay (bl->section) | |
3985 | && !section_is_mapped (bl->section)) | |
3986 | { | |
3987 | /* Unmapped overlay -- can't be a match. */ | |
3988 | continue; | |
3989 | } | |
3990 | ||
3991 | return 1; | |
3992 | } | |
3993 | } | |
3994 | ||
3995 | return 0; | |
3996 | } | |
3997 | ||
1c5cfe86 PA |
3998 | /* Return true if there's a moribund breakpoint at PC. */ |
3999 | ||
4000 | int | |
accd0bcd | 4001 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4002 | { |
1123588c | 4003 | for (bp_location *loc : moribund_locations) |
f1310107 | 4004 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4005 | return 1; |
4006 | ||
4007 | return 0; | |
4008 | } | |
c2c6d25f | 4009 | |
f7ce857f PA |
4010 | /* Returns non-zero iff BL is inserted at PC, in address space |
4011 | ASPACE. */ | |
4012 | ||
4013 | static int | |
4014 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4015 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4016 | { |
4017 | if (bl->inserted | |
4018 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4019 | aspace, pc)) | |
4020 | { | |
4021 | if (overlay_debugging | |
4022 | && section_is_overlay (bl->section) | |
4023 | && !section_is_mapped (bl->section)) | |
4024 | return 0; /* unmapped overlay -- can't be a match */ | |
4025 | else | |
4026 | return 1; | |
4027 | } | |
4028 | return 0; | |
4029 | } | |
4030 | ||
a1fd2fa5 | 4031 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4032 | |
4033 | int | |
accd0bcd | 4034 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4035 | { |
f7ce857f | 4036 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4037 | |
f7ce857f | 4038 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4039 | { |
f7ce857f PA |
4040 | struct bp_location *bl = *blp; |
4041 | ||
35df4500 TJB |
4042 | if (bl->loc_type != bp_loc_software_breakpoint |
4043 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4044 | continue; |
4045 | ||
f7ce857f PA |
4046 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4047 | return 1; | |
c5aa993b | 4048 | } |
c36b740a VP |
4049 | return 0; |
4050 | } | |
4051 | ||
a1fd2fa5 PA |
4052 | /* This function returns non-zero iff there is a software breakpoint |
4053 | inserted at PC. */ | |
c36b740a VP |
4054 | |
4055 | int | |
accd0bcd | 4056 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4057 | CORE_ADDR pc) |
4fa8626c | 4058 | { |
f7ce857f | 4059 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4060 | |
f7ce857f | 4061 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4062 | { |
f7ce857f PA |
4063 | struct bp_location *bl = *blp; |
4064 | ||
35df4500 | 4065 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4066 | continue; |
4067 | ||
f7ce857f PA |
4068 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4069 | return 1; | |
4fa8626c DJ |
4070 | } |
4071 | ||
4072 | return 0; | |
9c02b525 PA |
4073 | } |
4074 | ||
4075 | /* See breakpoint.h. */ | |
4076 | ||
4077 | int | |
accd0bcd | 4078 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4079 | CORE_ADDR pc) |
4080 | { | |
4081 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4082 | |
4083 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4084 | { | |
4085 | struct bp_location *bl = *blp; | |
4086 | ||
4087 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4088 | continue; | |
4089 | ||
4090 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4091 | return 1; | |
4092 | } | |
4093 | ||
4094 | return 0; | |
4fa8626c DJ |
4095 | } |
4096 | ||
9093389c | 4097 | int |
accd0bcd | 4098 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4099 | CORE_ADDR addr, ULONGEST len) |
4100 | { | |
4101 | struct breakpoint *bpt; | |
4102 | ||
4103 | ALL_BREAKPOINTS (bpt) | |
4104 | { | |
4105 | struct bp_location *loc; | |
4106 | ||
4107 | if (bpt->type != bp_hardware_watchpoint | |
4108 | && bpt->type != bp_access_watchpoint) | |
4109 | continue; | |
4110 | ||
4111 | if (!breakpoint_enabled (bpt)) | |
4112 | continue; | |
4113 | ||
4114 | for (loc = bpt->loc; loc; loc = loc->next) | |
4115 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4116 | { | |
4117 | CORE_ADDR l, h; | |
4118 | ||
4119 | /* Check for intersection. */ | |
768adc05 PA |
4120 | l = std::max<CORE_ADDR> (loc->address, addr); |
4121 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4122 | if (l < h) |
4123 | return 1; | |
4124 | } | |
4125 | } | |
4126 | return 0; | |
4127 | } | |
c5aa993b | 4128 | |
f2478a7e | 4129 | /* See breakpoint.h. */ |
c906108c | 4130 | |
f2478a7e SM |
4131 | bool |
4132 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4133 | { |
f2478a7e | 4134 | return (b->type == bp_catchpoint); |
c906108c SS |
4135 | } |
4136 | ||
f431efe5 PA |
4137 | /* Frees any storage that is part of a bpstat. Does not walk the |
4138 | 'next' chain. */ | |
4139 | ||
04afa70c | 4140 | bpstats::~bpstats () |
198757a8 | 4141 | { |
04afa70c TT |
4142 | if (bp_location_at != NULL) |
4143 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4144 | } |
4145 | ||
c906108c SS |
4146 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4147 | Also free any storage that is part of a bpstat. */ | |
4148 | ||
4149 | void | |
fba45db2 | 4150 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4151 | { |
4152 | bpstat p; | |
4153 | bpstat q; | |
4154 | ||
4155 | if (bsp == 0) | |
4156 | return; | |
4157 | p = *bsp; | |
4158 | while (p != NULL) | |
4159 | { | |
4160 | q = p->next; | |
04afa70c | 4161 | delete p; |
c906108c SS |
4162 | p = q; |
4163 | } | |
4164 | *bsp = NULL; | |
4165 | } | |
4166 | ||
04afa70c TT |
4167 | bpstats::bpstats (const bpstats &other) |
4168 | : next (NULL), | |
4169 | bp_location_at (other.bp_location_at), | |
4170 | breakpoint_at (other.breakpoint_at), | |
4171 | commands (other.commands), | |
04afa70c TT |
4172 | print (other.print), |
4173 | stop (other.stop), | |
4174 | print_it (other.print_it) | |
4175 | { | |
850645cf TT |
4176 | if (other.old_val != NULL) |
4177 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4178 | incref_bp_location (bp_location_at); |
04afa70c TT |
4179 | } |
4180 | ||
c906108c SS |
4181 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4182 | is part of the bpstat is copied as well. */ | |
4183 | ||
4184 | bpstat | |
fba45db2 | 4185 | bpstat_copy (bpstat bs) |
c906108c SS |
4186 | { |
4187 | bpstat p = NULL; | |
4188 | bpstat tmp; | |
4189 | bpstat retval = NULL; | |
4190 | ||
4191 | if (bs == NULL) | |
4192 | return bs; | |
4193 | ||
4194 | for (; bs != NULL; bs = bs->next) | |
4195 | { | |
04afa70c | 4196 | tmp = new bpstats (*bs); |
31cc81e9 | 4197 | |
c906108c SS |
4198 | if (p == NULL) |
4199 | /* This is the first thing in the chain. */ | |
4200 | retval = tmp; | |
4201 | else | |
4202 | p->next = tmp; | |
4203 | p = tmp; | |
4204 | } | |
4205 | p->next = NULL; | |
4206 | return retval; | |
4207 | } | |
4208 | ||
4a64f543 | 4209 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4210 | |
4211 | bpstat | |
fba45db2 | 4212 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4213 | { |
c5aa993b JM |
4214 | if (bsp == NULL) |
4215 | return NULL; | |
c906108c | 4216 | |
c5aa993b JM |
4217 | for (; bsp != NULL; bsp = bsp->next) |
4218 | { | |
f431efe5 | 4219 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4220 | return bsp; |
4221 | } | |
c906108c SS |
4222 | return NULL; |
4223 | } | |
4224 | ||
ab04a2af TT |
4225 | /* See breakpoint.h. */ |
4226 | ||
4c462cb0 | 4227 | bool |
427cd150 | 4228 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4229 | { |
ab04a2af TT |
4230 | for (; bsp != NULL; bsp = bsp->next) |
4231 | { | |
427cd150 TT |
4232 | if (bsp->breakpoint_at == NULL) |
4233 | { | |
4234 | /* A moribund location can never explain a signal other than | |
4235 | GDB_SIGNAL_TRAP. */ | |
4236 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4237 | return true; |
427cd150 TT |
4238 | } |
4239 | else | |
47591c29 PA |
4240 | { |
4241 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4242 | sig)) | |
4c462cb0 | 4243 | return true; |
47591c29 | 4244 | } |
ab04a2af TT |
4245 | } |
4246 | ||
4c462cb0 | 4247 | return false; |
ab04a2af TT |
4248 | } |
4249 | ||
4a64f543 MS |
4250 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4251 | stopped at. *BSP upon return is a bpstat which points to the | |
4252 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4253 | good for anything but further calls to bpstat_num). | |
4254 | ||
8671a17b PA |
4255 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4256 | Return -1 if stopped at a breakpoint that has been deleted since | |
4257 | we set it. | |
4258 | Return 1 otherwise. */ | |
c906108c SS |
4259 | |
4260 | int | |
8671a17b | 4261 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4262 | { |
4263 | struct breakpoint *b; | |
4264 | ||
4265 | if ((*bsp) == NULL) | |
4266 | return 0; /* No more breakpoint values */ | |
8671a17b | 4267 | |
4a64f543 MS |
4268 | /* We assume we'll never have several bpstats that correspond to a |
4269 | single breakpoint -- otherwise, this function might return the | |
4270 | same number more than once and this will look ugly. */ | |
f431efe5 | 4271 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4272 | *bsp = (*bsp)->next; |
4273 | if (b == NULL) | |
4274 | return -1; /* breakpoint that's been deleted since */ | |
4275 | ||
4276 | *num = b->number; /* We have its number */ | |
4277 | return 1; | |
c906108c SS |
4278 | } |
4279 | ||
e93ca019 | 4280 | /* See breakpoint.h. */ |
c906108c SS |
4281 | |
4282 | void | |
e93ca019 | 4283 | bpstat_clear_actions (void) |
c906108c | 4284 | { |
e93ca019 JK |
4285 | bpstat bs; |
4286 | ||
00431a78 | 4287 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4288 | return; |
4289 | ||
00431a78 | 4290 | thread_info *tp = inferior_thread (); |
e93ca019 | 4291 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4292 | { |
d1b0a7bf | 4293 | bs->commands = NULL; |
850645cf | 4294 | bs->old_val.reset (nullptr); |
c906108c SS |
4295 | } |
4296 | } | |
4297 | ||
f3b1572e PA |
4298 | /* Called when a command is about to proceed the inferior. */ |
4299 | ||
4300 | static void | |
4301 | breakpoint_about_to_proceed (void) | |
4302 | { | |
d7e15655 | 4303 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4304 | { |
4305 | struct thread_info *tp = inferior_thread (); | |
4306 | ||
4307 | /* Allow inferior function calls in breakpoint commands to not | |
4308 | interrupt the command list. When the call finishes | |
4309 | successfully, the inferior will be standing at the same | |
4310 | breakpoint as if nothing happened. */ | |
16c381f0 | 4311 | if (tp->control.in_infcall) |
f3b1572e PA |
4312 | return; |
4313 | } | |
4314 | ||
4315 | breakpoint_proceeded = 1; | |
4316 | } | |
4317 | ||
abf85f46 JK |
4318 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4319 | or its equivalent. */ | |
4320 | ||
4321 | static int | |
4322 | command_line_is_silent (struct command_line *cmd) | |
4323 | { | |
4f45d445 | 4324 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4325 | } |
4326 | ||
4a64f543 MS |
4327 | /* Execute all the commands associated with all the breakpoints at |
4328 | this location. Any of these commands could cause the process to | |
4329 | proceed beyond this point, etc. We look out for such changes by | |
4330 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4331 | |
347bddb7 PA |
4332 | Returns true if a breakpoint command resumed the inferior. In that |
4333 | case, it is the caller's responsibility to recall it again with the | |
4334 | bpstat of the current thread. */ | |
4335 | ||
4336 | static int | |
4337 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4338 | { |
4339 | bpstat bs; | |
347bddb7 | 4340 | int again = 0; |
c906108c SS |
4341 | |
4342 | /* Avoid endless recursion if a `source' command is contained | |
4343 | in bs->commands. */ | |
4344 | if (executing_breakpoint_commands) | |
347bddb7 | 4345 | return 0; |
c906108c | 4346 | |
81b1e71c TT |
4347 | scoped_restore save_executing |
4348 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4349 | |
1ac32117 | 4350 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4351 | |
4a64f543 | 4352 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4353 | bs = *bsp; |
4354 | ||
4355 | breakpoint_proceeded = 0; | |
4356 | for (; bs != NULL; bs = bs->next) | |
4357 | { | |
d1b0a7bf | 4358 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4359 | |
4360 | /* Take ownership of the BSP's command tree, if it has one. | |
4361 | ||
4362 | The command tree could legitimately contain commands like | |
4363 | 'step' and 'next', which call clear_proceed_status, which | |
4364 | frees stop_bpstat's command tree. To make sure this doesn't | |
4365 | free the tree we're executing out from under us, we need to | |
4366 | take ownership of the tree ourselves. Since a given bpstat's | |
4367 | commands are only executed once, we don't need to copy it; we | |
4368 | can clear the pointer in the bpstat, and make sure we free | |
4369 | the tree when we're done. */ | |
d1b0a7bf | 4370 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4371 | bs->commands = NULL; |
d1b0a7bf TT |
4372 | if (ccmd != NULL) |
4373 | cmd = ccmd.get (); | |
abf85f46 JK |
4374 | if (command_line_is_silent (cmd)) |
4375 | { | |
4376 | /* The action has been already done by bpstat_stop_status. */ | |
4377 | cmd = cmd->next; | |
4378 | } | |
6c50ab1c | 4379 | |
c906108c SS |
4380 | while (cmd != NULL) |
4381 | { | |
4382 | execute_control_command (cmd); | |
4383 | ||
4384 | if (breakpoint_proceeded) | |
4385 | break; | |
4386 | else | |
4387 | cmd = cmd->next; | |
4388 | } | |
6c50ab1c | 4389 | |
c906108c | 4390 | if (breakpoint_proceeded) |
32c1e744 | 4391 | { |
cb814510 | 4392 | if (current_ui->async) |
347bddb7 PA |
4393 | /* If we are in async mode, then the target might be still |
4394 | running, not stopped at any breakpoint, so nothing for | |
4395 | us to do here -- just return to the event loop. */ | |
4396 | ; | |
32c1e744 VP |
4397 | else |
4398 | /* In sync mode, when execute_control_command returns | |
4399 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4400 | Breakpoint commands for that stop were not run, since |
4401 | execute_command does not run breakpoint commands -- | |
4402 | only command_line_handler does, but that one is not | |
4403 | involved in execution of breakpoint commands. So, we | |
4404 | can now execute breakpoint commands. It should be | |
4405 | noted that making execute_command do bpstat actions is | |
4406 | not an option -- in this case we'll have recursive | |
4407 | invocation of bpstat for each breakpoint with a | |
4408 | command, and can easily blow up GDB stack. Instead, we | |
4409 | return true, which will trigger the caller to recall us | |
4410 | with the new stop_bpstat. */ | |
4411 | again = 1; | |
4412 | break; | |
32c1e744 | 4413 | } |
c906108c | 4414 | } |
347bddb7 PA |
4415 | return again; |
4416 | } | |
4417 | ||
00431a78 PA |
4418 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4419 | one, is alive and has execution. Return NULL otherwise. */ | |
4420 | ||
4421 | static thread_info * | |
4422 | get_bpstat_thread () | |
4423 | { | |
4424 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4425 | return NULL; | |
4426 | ||
4427 | thread_info *tp = inferior_thread (); | |
4428 | if (tp->state == THREAD_EXITED || tp->executing) | |
4429 | return NULL; | |
4430 | return tp; | |
4431 | } | |
4432 | ||
347bddb7 PA |
4433 | void |
4434 | bpstat_do_actions (void) | |
4435 | { | |
694c6bf5 | 4436 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4437 | thread_info *tp; |
353d1d73 | 4438 | |
347bddb7 | 4439 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4440 | while ((tp = get_bpstat_thread ()) != NULL) |
4441 | { | |
4442 | /* Since in sync mode, bpstat_do_actions may resume the | |
4443 | inferior, and only return when it is stopped at the next | |
4444 | breakpoint, we keep doing breakpoint actions until it returns | |
4445 | false to indicate the inferior was not resumed. */ | |
4446 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4447 | break; | |
4448 | } | |
353d1d73 | 4449 | |
694c6bf5 | 4450 | cleanup_if_error.release (); |
c906108c SS |
4451 | } |
4452 | ||
fa4727a6 DJ |
4453 | /* Print out the (old or new) value associated with a watchpoint. */ |
4454 | ||
4455 | static void | |
4456 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4457 | { | |
4458 | if (val == NULL) | |
7f6aba03 | 4459 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4460 | else |
79a45b7d TT |
4461 | { |
4462 | struct value_print_options opts; | |
4463 | get_user_print_options (&opts); | |
4464 | value_print (val, stream, &opts); | |
4465 | } | |
fa4727a6 DJ |
4466 | } |
4467 | ||
f303dbd6 PA |
4468 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4469 | debugging multiple threads. */ | |
4470 | ||
4471 | void | |
4472 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4473 | { | |
112e8700 | 4474 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4475 | return; |
4476 | ||
112e8700 | 4477 | uiout->text ("\n"); |
f303dbd6 PA |
4478 | |
4479 | if (show_thread_that_caused_stop ()) | |
4480 | { | |
4481 | const char *name; | |
4482 | struct thread_info *thr = inferior_thread (); | |
4483 | ||
112e8700 | 4484 | uiout->text ("Thread "); |
33eca680 | 4485 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4486 | |
4487 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4488 | if (name != NULL) | |
4489 | { | |
112e8700 | 4490 | uiout->text (" \""); |
33eca680 | 4491 | uiout->field_string ("name", name); |
112e8700 | 4492 | uiout->text ("\""); |
f303dbd6 PA |
4493 | } |
4494 | ||
112e8700 | 4495 | uiout->text (" hit "); |
f303dbd6 PA |
4496 | } |
4497 | } | |
4498 | ||
e514a9d6 | 4499 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4500 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4501 | 'print_it' in the bpstat structure. Under some circumstances we |
4502 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4503 | normal_stop(). */ |
e514a9d6 JM |
4504 | |
4505 | static enum print_stop_action | |
4506 | print_bp_stop_message (bpstat bs) | |
4507 | { | |
4508 | switch (bs->print_it) | |
4509 | { | |
4510 | case print_it_noop: | |
4a64f543 | 4511 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4512 | return PRINT_UNKNOWN; |
4513 | break; | |
4514 | ||
4515 | case print_it_done: | |
4516 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4517 | relevant messages. */ |
e514a9d6 JM |
4518 | return PRINT_SRC_AND_LOC; |
4519 | break; | |
4520 | ||
4521 | case print_it_normal: | |
4f8d1dc6 | 4522 | { |
f431efe5 PA |
4523 | struct breakpoint *b = bs->breakpoint_at; |
4524 | ||
1a6a67de TJB |
4525 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4526 | which has since been deleted. */ | |
4527 | if (b == NULL) | |
4528 | return PRINT_UNKNOWN; | |
4529 | ||
348d480f PA |
4530 | /* Normal case. Call the breakpoint's print_it method. */ |
4531 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4532 | } |
348d480f | 4533 | break; |
3086aeae | 4534 | |
e514a9d6 | 4535 | default: |
8e65ff28 | 4536 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4537 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4538 | break; |
c906108c | 4539 | } |
c906108c SS |
4540 | } |
4541 | ||
edcc5120 TT |
4542 | /* A helper function that prints a shared library stopped event. */ |
4543 | ||
4544 | static void | |
4545 | print_solib_event (int is_catchpoint) | |
4546 | { | |
6fb16ce6 | 4547 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4548 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4549 | |
4550 | if (!is_catchpoint) | |
4551 | { | |
4552 | if (any_added || any_deleted) | |
112e8700 | 4553 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4554 | else |
112e8700 SM |
4555 | current_uiout->text (_("Stopped due to shared library event (no " |
4556 | "libraries added or removed)\n")); | |
edcc5120 TT |
4557 | } |
4558 | ||
112e8700 SM |
4559 | if (current_uiout->is_mi_like_p ()) |
4560 | current_uiout->field_string ("reason", | |
4561 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4562 | |
4563 | if (any_deleted) | |
4564 | { | |
112e8700 | 4565 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4566 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4567 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4568 | { |
6fb16ce6 SM |
4569 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4570 | ||
edcc5120 | 4571 | if (ix > 0) |
112e8700 SM |
4572 | current_uiout->text (" "); |
4573 | current_uiout->field_string ("library", name); | |
4574 | current_uiout->text ("\n"); | |
edcc5120 | 4575 | } |
edcc5120 TT |
4576 | } |
4577 | ||
4578 | if (any_added) | |
4579 | { | |
112e8700 | 4580 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4581 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4582 | bool first = true; |
52941706 | 4583 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4584 | { |
bcb430e4 | 4585 | if (!first) |
112e8700 | 4586 | current_uiout->text (" "); |
bcb430e4 | 4587 | first = false; |
112e8700 SM |
4588 | current_uiout->field_string ("library", iter->so_name); |
4589 | current_uiout->text ("\n"); | |
edcc5120 | 4590 | } |
edcc5120 TT |
4591 | } |
4592 | } | |
4593 | ||
e514a9d6 JM |
4594 | /* Print a message indicating what happened. This is called from |
4595 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4596 | list - a list of the eventpoints that caused this stop. KIND is |
4597 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4598 | routine calls the generic print routine for printing a message |
4599 | about reasons for stopping. This will print (for example) the | |
4600 | "Breakpoint n," part of the output. The return value of this | |
4601 | routine is one of: | |
c906108c | 4602 | |
4a64f543 | 4603 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4604 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4605 | code to print the location. An example is |
c5aa993b JM |
4606 | "Breakpoint 1, " which should be followed by |
4607 | the location. | |
917317f4 | 4608 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4609 | to also print the location part of the message. |
4610 | An example is the catch/throw messages, which | |
4a64f543 | 4611 | don't require a location appended to the end. |
917317f4 | 4612 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4613 | further info to be printed. */ |
c906108c | 4614 | |
917317f4 | 4615 | enum print_stop_action |
36dfb11c | 4616 | bpstat_print (bpstat bs, int kind) |
c906108c | 4617 | { |
f486487f | 4618 | enum print_stop_action val; |
c5aa993b | 4619 | |
c906108c | 4620 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4621 | (Currently all watchpoints go on the bpstat whether hit or not. |
4622 | That probably could (should) be changed, provided care is taken | |
c906108c | 4623 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4624 | for (; bs; bs = bs->next) |
4625 | { | |
4626 | val = print_bp_stop_message (bs); | |
4627 | if (val == PRINT_SRC_ONLY | |
4628 | || val == PRINT_SRC_AND_LOC | |
4629 | || val == PRINT_NOTHING) | |
4630 | return val; | |
4631 | } | |
c906108c | 4632 | |
36dfb11c TT |
4633 | /* If we had hit a shared library event breakpoint, |
4634 | print_bp_stop_message would print out this message. If we hit an | |
4635 | OS-level shared library event, do the same thing. */ | |
4636 | if (kind == TARGET_WAITKIND_LOADED) | |
4637 | { | |
edcc5120 | 4638 | print_solib_event (0); |
36dfb11c TT |
4639 | return PRINT_NOTHING; |
4640 | } | |
4641 | ||
e514a9d6 | 4642 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4643 | with and nothing was printed. */ |
917317f4 | 4644 | return PRINT_UNKNOWN; |
c906108c SS |
4645 | } |
4646 | ||
bf469271 | 4647 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4648 | |
bf469271 PA |
4649 | static bool |
4650 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4651 | { |
278cd55f | 4652 | struct value *mark = value_mark (); |
bf469271 | 4653 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4654 | |
c906108c | 4655 | value_free_to_mark (mark); |
bf469271 | 4656 | return res; |
c906108c SS |
4657 | } |
4658 | ||
5760d0ab | 4659 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4660 | |
04afa70c TT |
4661 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4662 | : next (NULL), | |
4663 | bp_location_at (bl), | |
4664 | breakpoint_at (bl->owner), | |
4665 | commands (NULL), | |
04afa70c TT |
4666 | print (0), |
4667 | stop (0), | |
4668 | print_it (print_it_normal) | |
c906108c | 4669 | { |
f431efe5 | 4670 | incref_bp_location (bl); |
04afa70c TT |
4671 | **bs_link_pointer = this; |
4672 | *bs_link_pointer = &next; | |
4673 | } | |
4674 | ||
4675 | bpstats::bpstats () | |
4676 | : next (NULL), | |
4677 | bp_location_at (NULL), | |
4678 | breakpoint_at (NULL), | |
4679 | commands (NULL), | |
04afa70c TT |
4680 | print (0), |
4681 | stop (0), | |
4682 | print_it (print_it_normal) | |
4683 | { | |
c906108c SS |
4684 | } |
4685 | \f | |
d983da9c DJ |
4686 | /* The target has stopped with waitstatus WS. Check if any hardware |
4687 | watchpoints have triggered, according to the target. */ | |
4688 | ||
4689 | int | |
4690 | watchpoints_triggered (struct target_waitstatus *ws) | |
4691 | { | |
57810aa7 | 4692 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4693 | CORE_ADDR addr; |
4694 | struct breakpoint *b; | |
4695 | ||
4696 | if (!stopped_by_watchpoint) | |
4697 | { | |
4698 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4699 | as not triggered. */ | |
4700 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4701 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4702 | { |
4703 | struct watchpoint *w = (struct watchpoint *) b; | |
4704 | ||
4705 | w->watchpoint_triggered = watch_triggered_no; | |
4706 | } | |
d983da9c DJ |
4707 | |
4708 | return 0; | |
4709 | } | |
4710 | ||
8b88a78e | 4711 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4712 | { |
4713 | /* We were stopped by a watchpoint, but we don't know where. | |
4714 | Mark all watchpoints as unknown. */ | |
4715 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4716 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4717 | { |
4718 | struct watchpoint *w = (struct watchpoint *) b; | |
4719 | ||
4720 | w->watchpoint_triggered = watch_triggered_unknown; | |
4721 | } | |
d983da9c | 4722 | |
3c4797ba | 4723 | return 1; |
d983da9c DJ |
4724 | } |
4725 | ||
4726 | /* The target could report the data address. Mark watchpoints | |
4727 | affected by this data address as triggered, and all others as not | |
4728 | triggered. */ | |
4729 | ||
4730 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4731 | if (is_hardware_watchpoint (b)) |
d983da9c | 4732 | { |
3a5c3e22 | 4733 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4734 | struct bp_location *loc; |
d983da9c | 4735 | |
3a5c3e22 | 4736 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4737 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4738 | { |
3a5c3e22 | 4739 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4740 | { |
3a5c3e22 PA |
4741 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4742 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4743 | |
4744 | if (newaddr == start) | |
4745 | { | |
3a5c3e22 | 4746 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4747 | break; |
4748 | } | |
4749 | } | |
4750 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4751 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4752 | addr, loc->address, |
4753 | loc->length)) | |
4754 | { | |
3a5c3e22 | 4755 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4756 | break; |
4757 | } | |
4758 | } | |
d983da9c DJ |
4759 | } |
4760 | ||
4761 | return 1; | |
4762 | } | |
4763 | ||
bf469271 PA |
4764 | /* Possible return values for watchpoint_check. */ |
4765 | enum wp_check_result | |
4766 | { | |
4767 | /* The watchpoint has been deleted. */ | |
4768 | WP_DELETED = 1, | |
4769 | ||
4770 | /* The value has changed. */ | |
4771 | WP_VALUE_CHANGED = 2, | |
4772 | ||
4773 | /* The value has not changed. */ | |
4774 | WP_VALUE_NOT_CHANGED = 3, | |
4775 | ||
4776 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4777 | WP_IGNORE = 4, | |
4778 | }; | |
c906108c SS |
4779 | |
4780 | #define BP_TEMPFLAG 1 | |
4781 | #define BP_HARDWAREFLAG 2 | |
4782 | ||
4a64f543 | 4783 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4784 | changed. */ |
553e4c11 | 4785 | |
bf469271 PA |
4786 | static wp_check_result |
4787 | watchpoint_check (bpstat bs) | |
c906108c | 4788 | { |
3a5c3e22 | 4789 | struct watchpoint *b; |
c906108c SS |
4790 | struct frame_info *fr; |
4791 | int within_current_scope; | |
4792 | ||
f431efe5 | 4793 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4794 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4795 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4796 | |
f6bc2008 PA |
4797 | /* If this is a local watchpoint, we only want to check if the |
4798 | watchpoint frame is in scope if the current thread is the thread | |
4799 | that was used to create the watchpoint. */ | |
4800 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4801 | return WP_IGNORE; |
f6bc2008 | 4802 | |
c906108c SS |
4803 | if (b->exp_valid_block == NULL) |
4804 | within_current_scope = 1; | |
4805 | else | |
4806 | { | |
edb3359d DJ |
4807 | struct frame_info *frame = get_current_frame (); |
4808 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4809 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4810 | ||
c9cf6e20 | 4811 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4812 | still in the function but the stack frame has already been |
4813 | invalidated. Since we can't rely on the values of local | |
4814 | variables after the stack has been destroyed, we are treating | |
4815 | the watchpoint in that state as `not changed' without further | |
4816 | checking. Don't mark watchpoints as changed if the current | |
4817 | frame is in an epilogue - even if they are in some other | |
4818 | frame, our view of the stack is likely to be wrong and | |
4819 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4820 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4821 | return WP_IGNORE; |
a0f49112 | 4822 | |
101dcfbe | 4823 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4824 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4825 | |
4826 | /* If we've gotten confused in the unwinder, we might have | |
4827 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4828 | if (within_current_scope) |
4829 | { | |
4830 | struct symbol *function; | |
4831 | ||
4832 | function = get_frame_function (fr); | |
4833 | if (function == NULL | |
4834 | || !contained_in (b->exp_valid_block, | |
4835 | SYMBOL_BLOCK_VALUE (function))) | |
4836 | within_current_scope = 0; | |
4837 | } | |
69fbadd5 | 4838 | |
edb3359d | 4839 | if (within_current_scope) |
c906108c SS |
4840 | /* If we end up stopping, the current frame will get selected |
4841 | in normal_stop. So this call to select_frame won't affect | |
4842 | the user. */ | |
0f7d239c | 4843 | select_frame (fr); |
c906108c | 4844 | } |
c5aa993b | 4845 | |
c906108c SS |
4846 | if (within_current_scope) |
4847 | { | |
4a64f543 MS |
4848 | /* We use value_{,free_to_}mark because it could be a *long* |
4849 | time before we return to the command level and call | |
4850 | free_all_values. We can't call free_all_values because we | |
4851 | might be in the middle of evaluating a function call. */ | |
c906108c | 4852 | |
0cf6dd15 | 4853 | int pc = 0; |
9c06b0b4 | 4854 | struct value *mark; |
fa4727a6 DJ |
4855 | struct value *new_val; |
4856 | ||
c1fc2657 | 4857 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4858 | /* Since we don't know the exact trigger address (from |
4859 | stopped_data_address), just tell the user we've triggered | |
4860 | a mask watchpoint. */ | |
4861 | return WP_VALUE_CHANGED; | |
4862 | ||
4863 | mark = value_mark (); | |
4d01a485 | 4864 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4865 | |
bb9d5f81 PP |
4866 | if (b->val_bitsize != 0) |
4867 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4868 | ||
4a64f543 MS |
4869 | /* We use value_equal_contents instead of value_equal because |
4870 | the latter coerces an array to a pointer, thus comparing just | |
4871 | the address of the array instead of its contents. This is | |
4872 | not what we want. */ | |
fa4727a6 | 4873 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4874 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4875 | new_val))) | |
c906108c | 4876 | { |
c906108c | 4877 | bs->old_val = b->val; |
850645cf | 4878 | b->val = release_value (new_val); |
4c1d86d9 | 4879 | b->val_valid = true; |
850645cf TT |
4880 | if (new_val != NULL) |
4881 | value_free_to_mark (mark); | |
c906108c SS |
4882 | return WP_VALUE_CHANGED; |
4883 | } | |
4884 | else | |
4885 | { | |
60e1c644 | 4886 | /* Nothing changed. */ |
c906108c | 4887 | value_free_to_mark (mark); |
c906108c SS |
4888 | return WP_VALUE_NOT_CHANGED; |
4889 | } | |
4890 | } | |
4891 | else | |
4892 | { | |
4893 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4894 | if we temporarily ignored the watchpoint, then when |
4895 | we reenter the block in which it is valid it contains | |
4896 | garbage (in the case of a function, it may have two | |
4897 | garbage values, one before and one after the prologue). | |
4898 | So we can't even detect the first assignment to it and | |
4899 | watch after that (since the garbage may or may not equal | |
4900 | the first value assigned). */ | |
348d480f PA |
4901 | /* We print all the stop information in |
4902 | breakpoint_ops->print_it, but in this case, by the time we | |
4903 | call breakpoint_ops->print_it this bp will be deleted | |
4904 | already. So we have no choice but print the information | |
4905 | here. */ | |
468afe6c | 4906 | |
0e454242 | 4907 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4908 | { |
4909 | struct ui_out *uiout = current_uiout; | |
4910 | ||
112e8700 SM |
4911 | if (uiout->is_mi_like_p ()) |
4912 | uiout->field_string | |
4913 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
4914 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
4915 | "left the block in\n" | |
4916 | "which its expression is valid.\n", | |
4917 | signed_field ("wpnum", b->number)); | |
468afe6c | 4918 | } |
4ce44c66 | 4919 | |
cdac0397 | 4920 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4921 | b->commands = NULL; |
d0fb5eae | 4922 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4923 | |
4924 | return WP_DELETED; | |
4925 | } | |
4926 | } | |
4927 | ||
18a18393 | 4928 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4929 | breakpoint location BL. This function does not check if we should |
4930 | stop, only if BL explains the stop. */ | |
4931 | ||
18a18393 | 4932 | static int |
6c95b8df | 4933 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4934 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4935 | const struct target_waitstatus *ws) |
18a18393 VP |
4936 | { |
4937 | struct breakpoint *b = bl->owner; | |
4938 | ||
348d480f | 4939 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4940 | gdb_assert (b != NULL); |
4941 | ||
bd522513 | 4942 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4943 | } |
4944 | ||
3a5c3e22 PA |
4945 | /* Determine if the watched values have actually changed, and we |
4946 | should stop. If not, set BS->stop to 0. */ | |
4947 | ||
18a18393 VP |
4948 | static void |
4949 | bpstat_check_watchpoint (bpstat bs) | |
4950 | { | |
2bdf28a0 | 4951 | const struct bp_location *bl; |
3a5c3e22 | 4952 | struct watchpoint *b; |
2bdf28a0 JK |
4953 | |
4954 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4955 | bl = bs->bp_location_at; |
2bdf28a0 | 4956 | gdb_assert (bl != NULL); |
3a5c3e22 | 4957 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4958 | gdb_assert (b != NULL); |
18a18393 | 4959 | |
18a18393 | 4960 | { |
18a18393 VP |
4961 | int must_check_value = 0; |
4962 | ||
c1fc2657 | 4963 | if (b->type == bp_watchpoint) |
18a18393 VP |
4964 | /* For a software watchpoint, we must always check the |
4965 | watched value. */ | |
4966 | must_check_value = 1; | |
4967 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4968 | /* We have a hardware watchpoint (read, write, or access) | |
4969 | and the target earlier reported an address watched by | |
4970 | this watchpoint. */ | |
4971 | must_check_value = 1; | |
4972 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 4973 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
4974 | /* We were stopped by a hardware watchpoint, but the target could |
4975 | not report the data address. We must check the watchpoint's | |
4976 | value. Access and read watchpoints are out of luck; without | |
4977 | a data address, we can't figure it out. */ | |
4978 | must_check_value = 1; | |
3a5c3e22 | 4979 | |
18a18393 VP |
4980 | if (must_check_value) |
4981 | { | |
bf469271 PA |
4982 | wp_check_result e; |
4983 | ||
a70b8144 | 4984 | try |
bf469271 PA |
4985 | { |
4986 | e = watchpoint_check (bs); | |
4987 | } | |
230d2906 | 4988 | catch (const gdb_exception &ex) |
bf469271 PA |
4989 | { |
4990 | exception_fprintf (gdb_stderr, ex, | |
4991 | "Error evaluating expression " | |
4992 | "for watchpoint %d\n", | |
4993 | b->number); | |
4994 | ||
4995 | SWITCH_THRU_ALL_UIS () | |
4996 | { | |
4997 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
4998 | b->number); | |
4999 | } | |
5000 | watchpoint_del_at_next_stop (b); | |
5001 | e = WP_DELETED; | |
5002 | } | |
bf469271 | 5003 | |
18a18393 VP |
5004 | switch (e) |
5005 | { | |
5006 | case WP_DELETED: | |
5007 | /* We've already printed what needs to be printed. */ | |
5008 | bs->print_it = print_it_done; | |
5009 | /* Stop. */ | |
5010 | break; | |
60e1c644 PA |
5011 | case WP_IGNORE: |
5012 | bs->print_it = print_it_noop; | |
5013 | bs->stop = 0; | |
5014 | break; | |
18a18393 | 5015 | case WP_VALUE_CHANGED: |
c1fc2657 | 5016 | if (b->type == bp_read_watchpoint) |
18a18393 | 5017 | { |
85d721b8 PA |
5018 | /* There are two cases to consider here: |
5019 | ||
4a64f543 | 5020 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5021 | In that case, trust the target, and always report |
5022 | the watchpoint hit to the user. Even though | |
5023 | reads don't cause value changes, the value may | |
5024 | have changed since the last time it was read, and | |
5025 | since we're not trapping writes, we will not see | |
5026 | those, and as such we should ignore our notion of | |
5027 | old value. | |
5028 | ||
4a64f543 | 5029 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5030 | reads and writes. There are two ways this may |
5031 | happen: | |
5032 | ||
4a64f543 | 5033 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5034 | reads only, but can break on accesses (reads or |
5035 | writes), such as e.g., x86. We detect this case | |
5036 | at the time we try to insert read watchpoints. | |
5037 | ||
4a64f543 | 5038 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5039 | watchpoints, but, the user set an access or write |
5040 | watchpoint watching the same memory as this read | |
5041 | watchpoint. | |
5042 | ||
5043 | If we're watching memory writes as well as reads, | |
5044 | ignore watchpoint hits when we find that the | |
5045 | value hasn't changed, as reads don't cause | |
5046 | changes. This still gives false positives when | |
5047 | the program writes the same value to memory as | |
5048 | what there was already in memory (we will confuse | |
5049 | it for a read), but it's much better than | |
5050 | nothing. */ | |
5051 | ||
5052 | int other_write_watchpoint = 0; | |
5053 | ||
5054 | if (bl->watchpoint_type == hw_read) | |
5055 | { | |
5056 | struct breakpoint *other_b; | |
5057 | ||
5058 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5059 | if (other_b->type == bp_hardware_watchpoint |
5060 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5061 | { |
3a5c3e22 PA |
5062 | struct watchpoint *other_w = |
5063 | (struct watchpoint *) other_b; | |
5064 | ||
5065 | if (other_w->watchpoint_triggered | |
5066 | == watch_triggered_yes) | |
5067 | { | |
5068 | other_write_watchpoint = 1; | |
5069 | break; | |
5070 | } | |
85d721b8 PA |
5071 | } |
5072 | } | |
5073 | ||
5074 | if (other_write_watchpoint | |
5075 | || bl->watchpoint_type == hw_access) | |
5076 | { | |
5077 | /* We're watching the same memory for writes, | |
5078 | and the value changed since the last time we | |
5079 | updated it, so this trap must be for a write. | |
5080 | Ignore it. */ | |
5081 | bs->print_it = print_it_noop; | |
5082 | bs->stop = 0; | |
5083 | } | |
18a18393 VP |
5084 | } |
5085 | break; | |
5086 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5087 | if (b->type == bp_hardware_watchpoint |
5088 | || b->type == bp_watchpoint) | |
18a18393 VP |
5089 | { |
5090 | /* Don't stop: write watchpoints shouldn't fire if | |
5091 | the value hasn't changed. */ | |
5092 | bs->print_it = print_it_noop; | |
5093 | bs->stop = 0; | |
5094 | } | |
5095 | /* Stop. */ | |
5096 | break; | |
5097 | default: | |
5098 | /* Can't happen. */ | |
18a18393 VP |
5099 | break; |
5100 | } | |
5101 | } | |
5102 | else /* must_check_value == 0 */ | |
5103 | { | |
5104 | /* This is a case where some watchpoint(s) triggered, but | |
5105 | not at the address of this watchpoint, or else no | |
5106 | watchpoint triggered after all. So don't print | |
5107 | anything for this watchpoint. */ | |
5108 | bs->print_it = print_it_noop; | |
5109 | bs->stop = 0; | |
5110 | } | |
5111 | } | |
5112 | } | |
5113 | ||
7d4df6a4 DE |
5114 | /* For breakpoints that are currently marked as telling gdb to stop, |
5115 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5116 | of breakpoint referred to by BS. If we should not stop for this |
5117 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5118 | |
18a18393 | 5119 | static void |
00431a78 | 5120 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5121 | { |
2bdf28a0 JK |
5122 | const struct bp_location *bl; |
5123 | struct breakpoint *b; | |
bf469271 PA |
5124 | /* Assume stop. */ |
5125 | bool condition_result = true; | |
7d4df6a4 DE |
5126 | struct expression *cond; |
5127 | ||
5128 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5129 | |
5130 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5131 | bl = bs->bp_location_at; |
2bdf28a0 | 5132 | gdb_assert (bl != NULL); |
f431efe5 | 5133 | b = bs->breakpoint_at; |
2bdf28a0 | 5134 | gdb_assert (b != NULL); |
18a18393 | 5135 | |
b775012e LM |
5136 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5137 | need to do so again since GDB does not know if we stopped due to a | |
5138 | breakpoint or a single step breakpoint. */ | |
5139 | ||
18a18393 | 5140 | if (frame_id_p (b->frame_id) |
edb3359d | 5141 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5142 | { |
7d4df6a4 DE |
5143 | bs->stop = 0; |
5144 | return; | |
5145 | } | |
60e1c644 | 5146 | |
12ab52e9 PA |
5147 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5148 | evaluating the condition if this isn't the specified | |
5149 | thread/task. */ | |
00431a78 PA |
5150 | if ((b->thread != -1 && b->thread != thread->global_num) |
5151 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5152 | { |
5153 | bs->stop = 0; | |
5154 | return; | |
5155 | } | |
5156 | ||
6dddc817 DE |
5157 | /* Evaluate extension language breakpoints that have a "stop" method |
5158 | implemented. */ | |
5159 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5160 | |
7d4df6a4 DE |
5161 | if (is_watchpoint (b)) |
5162 | { | |
5163 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5164 | |
4d01a485 | 5165 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5166 | } |
5167 | else | |
4d01a485 | 5168 | cond = bl->cond.get (); |
60e1c644 | 5169 | |
7d4df6a4 DE |
5170 | if (cond && b->disposition != disp_del_at_next_stop) |
5171 | { | |
5172 | int within_current_scope = 1; | |
5173 | struct watchpoint * w; | |
60e1c644 | 5174 | |
7d4df6a4 DE |
5175 | /* We use value_mark and value_free_to_mark because it could |
5176 | be a long time before we return to the command level and | |
5177 | call free_all_values. We can't call free_all_values | |
5178 | because we might be in the middle of evaluating a | |
5179 | function call. */ | |
5180 | struct value *mark = value_mark (); | |
5181 | ||
5182 | if (is_watchpoint (b)) | |
5183 | w = (struct watchpoint *) b; | |
5184 | else | |
5185 | w = NULL; | |
5186 | ||
5187 | /* Need to select the frame, with all that implies so that | |
5188 | the conditions will have the right context. Because we | |
5189 | use the frame, we will not see an inlined function's | |
5190 | variables when we arrive at a breakpoint at the start | |
5191 | of the inlined function; the current frame will be the | |
5192 | call site. */ | |
5193 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5194 | select_frame (get_current_frame ()); | |
5195 | else | |
18a18393 | 5196 | { |
7d4df6a4 DE |
5197 | struct frame_info *frame; |
5198 | ||
5199 | /* For local watchpoint expressions, which particular | |
5200 | instance of a local is being watched matters, so we | |
5201 | keep track of the frame to evaluate the expression | |
5202 | in. To evaluate the condition however, it doesn't | |
5203 | really matter which instantiation of the function | |
5204 | where the condition makes sense triggers the | |
5205 | watchpoint. This allows an expression like "watch | |
5206 | global if q > 10" set in `func', catch writes to | |
5207 | global on all threads that call `func', or catch | |
5208 | writes on all recursive calls of `func' by a single | |
5209 | thread. We simply always evaluate the condition in | |
5210 | the innermost frame that's executing where it makes | |
5211 | sense to evaluate the condition. It seems | |
5212 | intuitive. */ | |
5213 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5214 | if (frame != NULL) | |
5215 | select_frame (frame); | |
5216 | else | |
5217 | within_current_scope = 0; | |
18a18393 | 5218 | } |
7d4df6a4 | 5219 | if (within_current_scope) |
bf469271 | 5220 | { |
a70b8144 | 5221 | try |
bf469271 PA |
5222 | { |
5223 | condition_result = breakpoint_cond_eval (cond); | |
5224 | } | |
230d2906 | 5225 | catch (const gdb_exception &ex) |
bf469271 PA |
5226 | { |
5227 | exception_fprintf (gdb_stderr, ex, | |
5228 | "Error in testing breakpoint condition:\n"); | |
5229 | } | |
bf469271 | 5230 | } |
7d4df6a4 | 5231 | else |
18a18393 | 5232 | { |
7d4df6a4 DE |
5233 | warning (_("Watchpoint condition cannot be tested " |
5234 | "in the current scope")); | |
5235 | /* If we failed to set the right context for this | |
5236 | watchpoint, unconditionally report it. */ | |
18a18393 | 5237 | } |
7d4df6a4 DE |
5238 | /* FIXME-someday, should give breakpoint #. */ |
5239 | value_free_to_mark (mark); | |
18a18393 | 5240 | } |
7d4df6a4 | 5241 | |
bf469271 | 5242 | if (cond && !condition_result) |
7d4df6a4 DE |
5243 | { |
5244 | bs->stop = 0; | |
5245 | } | |
7d4df6a4 DE |
5246 | else if (b->ignore_count > 0) |
5247 | { | |
5248 | b->ignore_count--; | |
5249 | bs->stop = 0; | |
5250 | /* Increase the hit count even though we don't stop. */ | |
5251 | ++(b->hit_count); | |
76727919 | 5252 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5253 | } |
18a18393 VP |
5254 | } |
5255 | ||
1cf4d951 PA |
5256 | /* Returns true if we need to track moribund locations of LOC's type |
5257 | on the current target. */ | |
5258 | ||
5259 | static int | |
5260 | need_moribund_for_location_type (struct bp_location *loc) | |
5261 | { | |
5262 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5263 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5264 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5265 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5266 | } | |
5267 | ||
ddfe970e | 5268 | /* See breakpoint.h. */ |
c906108c SS |
5269 | |
5270 | bpstat | |
ddfe970e | 5271 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5272 | const struct target_waitstatus *ws) |
c906108c | 5273 | { |
ddfe970e | 5274 | struct breakpoint *b; |
5760d0ab | 5275 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5276 | |
429374b8 JK |
5277 | ALL_BREAKPOINTS (b) |
5278 | { | |
1a853c52 | 5279 | if (!breakpoint_enabled (b)) |
429374b8 | 5280 | continue; |
a5606eee | 5281 | |
ddfe970e | 5282 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5283 | { |
4a64f543 MS |
5284 | /* For hardware watchpoints, we look only at the first |
5285 | location. The watchpoint_check function will work on the | |
5286 | entire expression, not the individual locations. For | |
5287 | read watchpoints, the watchpoints_triggered function has | |
5288 | checked all locations already. */ | |
429374b8 JK |
5289 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5290 | break; | |
18a18393 | 5291 | |
f6592439 | 5292 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5293 | continue; |
c5aa993b | 5294 | |
09ac7c10 | 5295 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5296 | continue; |
c5aa993b | 5297 | |
4a64f543 MS |
5298 | /* Come here if it's a watchpoint, or if the break address |
5299 | matches. */ | |
c5aa993b | 5300 | |
ddfe970e KS |
5301 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5302 | explain stop. */ | |
c5aa993b | 5303 | |
f431efe5 PA |
5304 | /* Assume we stop. Should we find a watchpoint that is not |
5305 | actually triggered, or if the condition of the breakpoint | |
5306 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5307 | bs->stop = 1; |
5308 | bs->print = 1; | |
d983da9c | 5309 | |
f431efe5 PA |
5310 | /* If this is a scope breakpoint, mark the associated |
5311 | watchpoint as triggered so that we will handle the | |
5312 | out-of-scope event. We'll get to the watchpoint next | |
5313 | iteration. */ | |
d0fb5eae | 5314 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5315 | { |
5316 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5317 | ||
5318 | w->watchpoint_triggered = watch_triggered_yes; | |
5319 | } | |
f431efe5 PA |
5320 | } |
5321 | } | |
5322 | ||
7c16b83e | 5323 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5324 | if (!target_supports_stopped_by_sw_breakpoint () |
5325 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5326 | { |
1123588c | 5327 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5328 | { |
1cf4d951 PA |
5329 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5330 | && need_moribund_for_location_type (loc)) | |
5331 | { | |
ddfe970e | 5332 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5333 | /* For hits of moribund locations, we should just proceed. */ |
5334 | bs->stop = 0; | |
5335 | bs->print = 0; | |
5336 | bs->print_it = print_it_noop; | |
5337 | } | |
f431efe5 PA |
5338 | } |
5339 | } | |
5340 | ||
ddfe970e KS |
5341 | return bs_head; |
5342 | } | |
5343 | ||
5344 | /* See breakpoint.h. */ | |
5345 | ||
5346 | bpstat | |
5347 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5348 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5349 | const struct target_waitstatus *ws, |
5350 | bpstat stop_chain) | |
5351 | { | |
5352 | struct breakpoint *b = NULL; | |
5353 | /* First item of allocated bpstat's. */ | |
5354 | bpstat bs_head = stop_chain; | |
5355 | bpstat bs; | |
5356 | int need_remove_insert; | |
5357 | int removed_any; | |
5358 | ||
5359 | /* First, build the bpstat chain with locations that explain a | |
5360 | target stop, while being careful to not set the target running, | |
5361 | as that may invalidate locations (in particular watchpoint | |
5362 | locations are recreated). Resuming will happen here with | |
5363 | breakpoint conditions or watchpoint expressions that include | |
5364 | inferior function calls. */ | |
5365 | if (bs_head == NULL) | |
5366 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5367 | ||
edcc5120 TT |
5368 | /* A bit of special processing for shlib breakpoints. We need to |
5369 | process solib loading here, so that the lists of loaded and | |
5370 | unloaded libraries are correct before we handle "catch load" and | |
5371 | "catch unload". */ | |
5372 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5373 | { | |
5d268276 | 5374 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5375 | { |
5376 | handle_solib_event (); | |
5377 | break; | |
5378 | } | |
5379 | } | |
5380 | ||
f431efe5 PA |
5381 | /* Now go through the locations that caused the target to stop, and |
5382 | check whether we're interested in reporting this stop to higher | |
5383 | layers, or whether we should resume the target transparently. */ | |
5384 | ||
5385 | removed_any = 0; | |
5386 | ||
5760d0ab | 5387 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5388 | { |
5389 | if (!bs->stop) | |
5390 | continue; | |
5391 | ||
f431efe5 | 5392 | b = bs->breakpoint_at; |
348d480f PA |
5393 | b->ops->check_status (bs); |
5394 | if (bs->stop) | |
28010a5d | 5395 | { |
00431a78 | 5396 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5397 | |
429374b8 JK |
5398 | if (bs->stop) |
5399 | { | |
5400 | ++(b->hit_count); | |
76727919 | 5401 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5402 | |
4a64f543 | 5403 | /* We will stop here. */ |
429374b8 JK |
5404 | if (b->disposition == disp_disable) |
5405 | { | |
816338b5 | 5406 | --(b->enable_count); |
1a853c52 | 5407 | if (b->enable_count <= 0) |
429374b8 | 5408 | b->enable_state = bp_disabled; |
f431efe5 | 5409 | removed_any = 1; |
429374b8 JK |
5410 | } |
5411 | if (b->silent) | |
5412 | bs->print = 0; | |
5413 | bs->commands = b->commands; | |
abf85f46 | 5414 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5415 | ? bs->commands.get () : NULL)) |
abf85f46 | 5416 | bs->print = 0; |
9d6e6e84 HZ |
5417 | |
5418 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5419 | } |
5420 | ||
348d480f | 5421 | } |
a9b3a50f PA |
5422 | |
5423 | /* Print nothing for this entry if we don't stop or don't | |
5424 | print. */ | |
5425 | if (!bs->stop || !bs->print) | |
5426 | bs->print_it = print_it_noop; | |
429374b8 | 5427 | } |
876fa593 | 5428 | |
d983da9c DJ |
5429 | /* If we aren't stopping, the value of some hardware watchpoint may |
5430 | not have changed, but the intermediate memory locations we are | |
5431 | watching may have. Don't bother if we're stopping; this will get | |
5432 | done later. */ | |
d832cb68 | 5433 | need_remove_insert = 0; |
5760d0ab JK |
5434 | if (! bpstat_causes_stop (bs_head)) |
5435 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5436 | if (!bs->stop |
f431efe5 PA |
5437 | && bs->breakpoint_at |
5438 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5439 | { |
3a5c3e22 PA |
5440 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5441 | ||
5442 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5443 | need_remove_insert = 1; |
d983da9c DJ |
5444 | } |
5445 | ||
d832cb68 | 5446 | if (need_remove_insert) |
44702360 | 5447 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5448 | else if (removed_any) |
44702360 | 5449 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5450 | |
5760d0ab | 5451 | return bs_head; |
c906108c | 5452 | } |
628fe4e4 JK |
5453 | |
5454 | static void | |
5455 | handle_jit_event (void) | |
5456 | { | |
5457 | struct frame_info *frame; | |
5458 | struct gdbarch *gdbarch; | |
5459 | ||
243a9253 PA |
5460 | if (debug_infrun) |
5461 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5462 | ||
628fe4e4 JK |
5463 | /* Switch terminal for any messages produced by |
5464 | breakpoint_re_set. */ | |
223ffa71 | 5465 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5466 | |
5467 | frame = get_current_frame (); | |
5468 | gdbarch = get_frame_arch (frame); | |
5469 | ||
5470 | jit_event_handler (gdbarch); | |
5471 | ||
223ffa71 | 5472 | target_terminal::inferior (); |
628fe4e4 JK |
5473 | } |
5474 | ||
5475 | /* Prepare WHAT final decision for infrun. */ | |
5476 | ||
5477 | /* Decide what infrun needs to do with this bpstat. */ | |
5478 | ||
c906108c | 5479 | struct bpstat_what |
0e30163f | 5480 | bpstat_what (bpstat bs_head) |
c906108c | 5481 | { |
c906108c | 5482 | struct bpstat_what retval; |
0e30163f | 5483 | bpstat bs; |
c906108c | 5484 | |
628fe4e4 | 5485 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5486 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5487 | retval.is_longjmp = false; |
628fe4e4 | 5488 | |
0e30163f | 5489 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5490 | { |
628fe4e4 JK |
5491 | /* Extract this BS's action. After processing each BS, we check |
5492 | if its action overrides all we've seem so far. */ | |
5493 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5494 | enum bptype bptype; | |
5495 | ||
c906108c | 5496 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5497 | { |
5498 | /* I suspect this can happen if it was a momentary | |
5499 | breakpoint which has since been deleted. */ | |
5500 | bptype = bp_none; | |
5501 | } | |
20874c92 | 5502 | else |
f431efe5 | 5503 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5504 | |
5505 | switch (bptype) | |
c906108c SS |
5506 | { |
5507 | case bp_none: | |
628fe4e4 | 5508 | break; |
c906108c SS |
5509 | case bp_breakpoint: |
5510 | case bp_hardware_breakpoint: | |
7c16b83e | 5511 | case bp_single_step: |
c906108c SS |
5512 | case bp_until: |
5513 | case bp_finish: | |
a9b3a50f | 5514 | case bp_shlib_event: |
c906108c SS |
5515 | if (bs->stop) |
5516 | { | |
5517 | if (bs->print) | |
628fe4e4 | 5518 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5519 | else |
628fe4e4 | 5520 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5521 | } |
5522 | else | |
628fe4e4 | 5523 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5524 | break; |
5525 | case bp_watchpoint: | |
5526 | case bp_hardware_watchpoint: | |
5527 | case bp_read_watchpoint: | |
5528 | case bp_access_watchpoint: | |
5529 | if (bs->stop) | |
5530 | { | |
5531 | if (bs->print) | |
628fe4e4 | 5532 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5533 | else |
628fe4e4 | 5534 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5535 | } |
5536 | else | |
628fe4e4 JK |
5537 | { |
5538 | /* There was a watchpoint, but we're not stopping. | |
5539 | This requires no further action. */ | |
5540 | } | |
c906108c SS |
5541 | break; |
5542 | case bp_longjmp: | |
e2e4d78b | 5543 | case bp_longjmp_call_dummy: |
186c406b | 5544 | case bp_exception: |
0a39bb32 PA |
5545 | if (bs->stop) |
5546 | { | |
5547 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5548 | retval.is_longjmp = bptype != bp_exception; | |
5549 | } | |
5550 | else | |
5551 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5552 | break; |
5553 | case bp_longjmp_resume: | |
186c406b | 5554 | case bp_exception_resume: |
0a39bb32 PA |
5555 | if (bs->stop) |
5556 | { | |
5557 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5558 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5559 | } | |
5560 | else | |
5561 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5562 | break; |
5563 | case bp_step_resume: | |
5564 | if (bs->stop) | |
628fe4e4 JK |
5565 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5566 | else | |
c906108c | 5567 | { |
628fe4e4 JK |
5568 | /* It is for the wrong frame. */ |
5569 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5570 | } |
c906108c | 5571 | break; |
2c03e5be PA |
5572 | case bp_hp_step_resume: |
5573 | if (bs->stop) | |
5574 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5575 | else | |
5576 | { | |
5577 | /* It is for the wrong frame. */ | |
5578 | this_action = BPSTAT_WHAT_SINGLE; | |
5579 | } | |
5580 | break; | |
c906108c | 5581 | case bp_watchpoint_scope: |
c4093a6a | 5582 | case bp_thread_event: |
1900040c | 5583 | case bp_overlay_event: |
0fd8e87f | 5584 | case bp_longjmp_master: |
aa7d318d | 5585 | case bp_std_terminate_master: |
186c406b | 5586 | case bp_exception_master: |
628fe4e4 | 5587 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5588 | break; |
ce78b96d | 5589 | case bp_catchpoint: |
c5aa993b JM |
5590 | if (bs->stop) |
5591 | { | |
5592 | if (bs->print) | |
628fe4e4 | 5593 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5594 | else |
628fe4e4 | 5595 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5596 | } |
5597 | else | |
628fe4e4 | 5598 | { |
cb1e4e32 PA |
5599 | /* Some catchpoints are implemented with breakpoints. |
5600 | For those, we need to step over the breakpoint. */ | |
5601 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5602 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5603 | } |
5604 | break; | |
628fe4e4 | 5605 | case bp_jit_event: |
628fe4e4 | 5606 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5607 | break; |
c906108c | 5608 | case bp_call_dummy: |
53a5351d JM |
5609 | /* Make sure the action is stop (silent or noisy), |
5610 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5611 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5612 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5613 | break; |
5614 | case bp_std_terminate: | |
5615 | /* Make sure the action is stop (silent or noisy), | |
5616 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5617 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5618 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5619 | break; |
1042e4c0 | 5620 | case bp_tracepoint: |
7a697b8d | 5621 | case bp_fast_tracepoint: |
0fb4aa4b | 5622 | case bp_static_tracepoint: |
1042e4c0 SS |
5623 | /* Tracepoint hits should not be reported back to GDB, and |
5624 | if one got through somehow, it should have been filtered | |
5625 | out already. */ | |
5626 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5627 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5628 | break; |
5629 | case bp_gnu_ifunc_resolver: | |
5630 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5631 | this_action = BPSTAT_WHAT_SINGLE; | |
5632 | break; | |
5633 | case bp_gnu_ifunc_resolver_return: | |
5634 | /* The breakpoint will be removed, execution will restart from the | |
5635 | PC of the former breakpoint. */ | |
5636 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5637 | break; | |
e7e0cddf SS |
5638 | |
5639 | case bp_dprintf: | |
a11cfd87 HZ |
5640 | if (bs->stop) |
5641 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5642 | else | |
5643 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5644 | break; |
5645 | ||
628fe4e4 JK |
5646 | default: |
5647 | internal_error (__FILE__, __LINE__, | |
5648 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5649 | } |
628fe4e4 | 5650 | |
325fac50 | 5651 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5652 | } |
628fe4e4 | 5653 | |
243a9253 PA |
5654 | return retval; |
5655 | } | |
628fe4e4 | 5656 | |
243a9253 PA |
5657 | void |
5658 | bpstat_run_callbacks (bpstat bs_head) | |
5659 | { | |
5660 | bpstat bs; | |
628fe4e4 | 5661 | |
0e30163f JK |
5662 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5663 | { | |
5664 | struct breakpoint *b = bs->breakpoint_at; | |
5665 | ||
5666 | if (b == NULL) | |
5667 | continue; | |
5668 | switch (b->type) | |
5669 | { | |
243a9253 PA |
5670 | case bp_jit_event: |
5671 | handle_jit_event (); | |
5672 | break; | |
0e30163f JK |
5673 | case bp_gnu_ifunc_resolver: |
5674 | gnu_ifunc_resolver_stop (b); | |
5675 | break; | |
5676 | case bp_gnu_ifunc_resolver_return: | |
5677 | gnu_ifunc_resolver_return_stop (b); | |
5678 | break; | |
5679 | } | |
5680 | } | |
c906108c SS |
5681 | } |
5682 | ||
4c462cb0 | 5683 | /* See breakpoint.h. */ |
c906108c | 5684 | |
4c462cb0 SM |
5685 | bool |
5686 | bpstat_should_step () | |
c906108c SS |
5687 | { |
5688 | struct breakpoint *b; | |
cc59ec59 | 5689 | |
c906108c | 5690 | ALL_BREAKPOINTS (b) |
717a8278 | 5691 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 SM |
5692 | return true; |
5693 | return false; | |
c906108c SS |
5694 | } |
5695 | ||
4c462cb0 SM |
5696 | /* See breakpoint.h. */ |
5697 | ||
5698 | bool | |
67822962 PA |
5699 | bpstat_causes_stop (bpstat bs) |
5700 | { | |
5701 | for (; bs != NULL; bs = bs->next) | |
5702 | if (bs->stop) | |
4c462cb0 | 5703 | return true; |
67822962 | 5704 | |
4c462cb0 | 5705 | return false; |
67822962 PA |
5706 | } |
5707 | ||
c906108c | 5708 | \f |
c5aa993b | 5709 | |
170b53b2 UW |
5710 | /* Compute a string of spaces suitable to indent the next line |
5711 | so it starts at the position corresponding to the table column | |
5712 | named COL_NAME in the currently active table of UIOUT. */ | |
5713 | ||
5714 | static char * | |
5715 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5716 | { | |
5717 | static char wrap_indent[80]; | |
5718 | int i, total_width, width, align; | |
c5209615 | 5719 | const char *text; |
170b53b2 UW |
5720 | |
5721 | total_width = 0; | |
112e8700 | 5722 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5723 | { |
5724 | if (strcmp (text, col_name) == 0) | |
5725 | { | |
5726 | gdb_assert (total_width < sizeof wrap_indent); | |
5727 | memset (wrap_indent, ' ', total_width); | |
5728 | wrap_indent[total_width] = 0; | |
5729 | ||
5730 | return wrap_indent; | |
5731 | } | |
5732 | ||
5733 | total_width += width + 1; | |
5734 | } | |
5735 | ||
5736 | return NULL; | |
5737 | } | |
5738 | ||
b775012e LM |
5739 | /* Determine if the locations of this breakpoint will have their conditions |
5740 | evaluated by the target, host or a mix of both. Returns the following: | |
5741 | ||
5742 | "host": Host evals condition. | |
5743 | "host or target": Host or Target evals condition. | |
5744 | "target": Target evals condition. | |
5745 | */ | |
5746 | ||
5747 | static const char * | |
5748 | bp_condition_evaluator (struct breakpoint *b) | |
5749 | { | |
5750 | struct bp_location *bl; | |
5751 | char host_evals = 0; | |
5752 | char target_evals = 0; | |
5753 | ||
5754 | if (!b) | |
5755 | return NULL; | |
5756 | ||
5757 | if (!is_breakpoint (b)) | |
5758 | return NULL; | |
5759 | ||
5760 | if (gdb_evaluates_breakpoint_condition_p () | |
5761 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5762 | return condition_evaluation_host; | |
5763 | ||
5764 | for (bl = b->loc; bl; bl = bl->next) | |
5765 | { | |
5766 | if (bl->cond_bytecode) | |
5767 | target_evals++; | |
5768 | else | |
5769 | host_evals++; | |
5770 | } | |
5771 | ||
5772 | if (host_evals && target_evals) | |
5773 | return condition_evaluation_both; | |
5774 | else if (target_evals) | |
5775 | return condition_evaluation_target; | |
5776 | else | |
5777 | return condition_evaluation_host; | |
5778 | } | |
5779 | ||
5780 | /* Determine the breakpoint location's condition evaluator. This is | |
5781 | similar to bp_condition_evaluator, but for locations. */ | |
5782 | ||
5783 | static const char * | |
5784 | bp_location_condition_evaluator (struct bp_location *bl) | |
5785 | { | |
5786 | if (bl && !is_breakpoint (bl->owner)) | |
5787 | return NULL; | |
5788 | ||
5789 | if (gdb_evaluates_breakpoint_condition_p () | |
5790 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5791 | return condition_evaluation_host; | |
5792 | ||
5793 | if (bl && bl->cond_bytecode) | |
5794 | return condition_evaluation_target; | |
5795 | else | |
5796 | return condition_evaluation_host; | |
5797 | } | |
5798 | ||
859825b8 JK |
5799 | /* Print the LOC location out of the list of B->LOC locations. */ |
5800 | ||
170b53b2 UW |
5801 | static void |
5802 | print_breakpoint_location (struct breakpoint *b, | |
5803 | struct bp_location *loc) | |
0d381245 | 5804 | { |
79a45e25 | 5805 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5806 | |
5807 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5808 | |
859825b8 JK |
5809 | if (loc != NULL && loc->shlib_disabled) |
5810 | loc = NULL; | |
5811 | ||
6c95b8df PA |
5812 | if (loc != NULL) |
5813 | set_current_program_space (loc->pspace); | |
5814 | ||
56435ebe | 5815 | if (b->display_canonical) |
d28cd78a | 5816 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5817 | else if (loc && loc->symtab) |
0d381245 | 5818 | { |
4a27f119 KS |
5819 | const struct symbol *sym = loc->symbol; |
5820 | ||
0d381245 VP |
5821 | if (sym) |
5822 | { | |
112e8700 | 5823 | uiout->text ("in "); |
987012b8 | 5824 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5825 | function_name_style.style ()); |
112e8700 SM |
5826 | uiout->text (" "); |
5827 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5828 | uiout->text ("at "); | |
0d381245 | 5829 | } |
112e8700 | 5830 | uiout->field_string ("file", |
cbe56571 | 5831 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5832 | file_name_style.style ()); |
112e8700 | 5833 | uiout->text (":"); |
05cba821 | 5834 | |
112e8700 SM |
5835 | if (uiout->is_mi_like_p ()) |
5836 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5837 | |
381befee | 5838 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5839 | } |
859825b8 | 5840 | else if (loc) |
0d381245 | 5841 | { |
d7e74731 | 5842 | string_file stb; |
170b53b2 | 5843 | |
d7e74731 | 5844 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5845 | demangle, ""); |
112e8700 | 5846 | uiout->field_stream ("at", stb); |
0d381245 | 5847 | } |
859825b8 | 5848 | else |
f00aae0f | 5849 | { |
d28cd78a TT |
5850 | uiout->field_string ("pending", |
5851 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5852 | /* If extra_string is available, it could be holding a condition |
5853 | or dprintf arguments. In either case, make sure it is printed, | |
5854 | too, but only for non-MI streams. */ | |
112e8700 | 5855 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5856 | { |
5857 | if (b->type == bp_dprintf) | |
112e8700 | 5858 | uiout->text (","); |
f00aae0f | 5859 | else |
112e8700 SM |
5860 | uiout->text (" "); |
5861 | uiout->text (b->extra_string); | |
f00aae0f KS |
5862 | } |
5863 | } | |
6c95b8df | 5864 | |
b775012e LM |
5865 | if (loc && is_breakpoint (b) |
5866 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5867 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5868 | { | |
112e8700 SM |
5869 | uiout->text (" ("); |
5870 | uiout->field_string ("evaluated-by", | |
b775012e | 5871 | bp_location_condition_evaluator (loc)); |
112e8700 | 5872 | uiout->text (")"); |
b775012e | 5873 | } |
0d381245 VP |
5874 | } |
5875 | ||
269b11a2 PA |
5876 | static const char * |
5877 | bptype_string (enum bptype type) | |
c906108c | 5878 | { |
c4093a6a JM |
5879 | struct ep_type_description |
5880 | { | |
5881 | enum bptype type; | |
a121b7c1 | 5882 | const char *description; |
c4093a6a JM |
5883 | }; |
5884 | static struct ep_type_description bptypes[] = | |
c906108c | 5885 | { |
c5aa993b JM |
5886 | {bp_none, "?deleted?"}, |
5887 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5888 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5889 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5890 | {bp_until, "until"}, |
5891 | {bp_finish, "finish"}, | |
5892 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5893 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5894 | {bp_read_watchpoint, "read watchpoint"}, |
5895 | {bp_access_watchpoint, "acc watchpoint"}, | |
5896 | {bp_longjmp, "longjmp"}, | |
5897 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5898 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5899 | {bp_exception, "exception"}, |
5900 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5901 | {bp_step_resume, "step resume"}, |
2c03e5be | 5902 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5903 | {bp_watchpoint_scope, "watchpoint scope"}, |
5904 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5905 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5906 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5907 | {bp_thread_event, "thread events"}, |
1900040c | 5908 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5909 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5910 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5911 | {bp_exception_master, "exception master"}, |
ce78b96d | 5912 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5913 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5914 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5915 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5916 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5917 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5918 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5919 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5920 | }; |
269b11a2 PA |
5921 | |
5922 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5923 | || ((int) type != bptypes[(int) type].type)) | |
5924 | internal_error (__FILE__, __LINE__, | |
5925 | _("bptypes table does not describe type #%d."), | |
5926 | (int) type); | |
5927 | ||
5928 | return bptypes[(int) type].description; | |
5929 | } | |
5930 | ||
998580f1 MK |
5931 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5932 | For CLI, prefix the list with the string 'inf'. */ | |
5933 | ||
5934 | static void | |
5935 | output_thread_groups (struct ui_out *uiout, | |
5936 | const char *field_name, | |
5c632425 | 5937 | const std::vector<int> &inf_nums, |
998580f1 MK |
5938 | int mi_only) |
5939 | { | |
112e8700 | 5940 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5941 | |
5942 | /* For backward compatibility, don't display inferiors in CLI unless | |
5943 | there are several. Always display them for MI. */ | |
5944 | if (!is_mi && mi_only) | |
5945 | return; | |
5946 | ||
10f489e5 | 5947 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5948 | |
5c632425 | 5949 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5950 | { |
5951 | if (is_mi) | |
5952 | { | |
5953 | char mi_group[10]; | |
5954 | ||
5c632425 | 5955 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5956 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5957 | } |
5958 | else | |
5959 | { | |
5960 | if (i == 0) | |
112e8700 | 5961 | uiout->text (" inf "); |
998580f1 | 5962 | else |
112e8700 | 5963 | uiout->text (", "); |
998580f1 | 5964 | |
5c632425 | 5965 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
5966 | } |
5967 | } | |
998580f1 MK |
5968 | } |
5969 | ||
a38118e5 PA |
5970 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
5971 | instead of going via breakpoint_ops::print_one. This makes "maint | |
5972 | info breakpoints" show the software breakpoint locations of | |
5973 | catchpoints, which are considered internal implementation | |
5974 | detail. */ | |
269b11a2 PA |
5975 | |
5976 | static void | |
5977 | print_one_breakpoint_location (struct breakpoint *b, | |
5978 | struct bp_location *loc, | |
5979 | int loc_number, | |
5980 | struct bp_location **last_loc, | |
a38118e5 | 5981 | int allflag, bool raw_loc) |
269b11a2 PA |
5982 | { |
5983 | struct command_line *l; | |
c2c6d25f | 5984 | static char bpenables[] = "nynny"; |
c906108c | 5985 | |
79a45e25 | 5986 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5987 | int header_of_multiple = 0; |
5988 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5989 | struct value_print_options opts; |
5990 | ||
5991 | get_user_print_options (&opts); | |
0d381245 VP |
5992 | |
5993 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5994 | /* See comment in print_one_breakpoint concerning treatment of |
5995 | breakpoints with single disabled location. */ | |
0d381245 VP |
5996 | if (loc == NULL |
5997 | && (b->loc != NULL | |
5998 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5999 | header_of_multiple = 1; | |
6000 | if (loc == NULL) | |
6001 | loc = b->loc; | |
6002 | ||
c4093a6a JM |
6003 | annotate_record (); |
6004 | ||
6005 | /* 1 */ | |
6006 | annotate_field (0); | |
0d381245 | 6007 | if (part_of_multiple) |
528e1572 | 6008 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6009 | else |
381befee | 6010 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6011 | |
6012 | /* 2 */ | |
6013 | annotate_field (1); | |
0d381245 | 6014 | if (part_of_multiple) |
112e8700 | 6015 | uiout->field_skip ("type"); |
269b11a2 | 6016 | else |
112e8700 | 6017 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6018 | |
6019 | /* 3 */ | |
6020 | annotate_field (2); | |
0d381245 | 6021 | if (part_of_multiple) |
112e8700 | 6022 | uiout->field_skip ("disp"); |
0d381245 | 6023 | else |
112e8700 | 6024 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6025 | |
c4093a6a JM |
6026 | /* 4 */ |
6027 | annotate_field (3); | |
0d381245 | 6028 | if (part_of_multiple) |
112e8700 | 6029 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6030 | else |
112e8700 | 6031 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6032 | |
c4093a6a | 6033 | /* 5 and 6 */ |
a38118e5 | 6034 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6035 | b->ops->print_one (b, last_loc); |
3086aeae | 6036 | else |
a38118e5 PA |
6037 | { |
6038 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6039 | { |
6040 | struct watchpoint *w = (struct watchpoint *) b; | |
6041 | ||
6042 | /* Field 4, the address, is omitted (which makes the columns | |
6043 | not line up too nicely with the headers, but the effect | |
6044 | is relatively readable). */ | |
6045 | if (opts.addressprint) | |
112e8700 | 6046 | uiout->field_skip ("addr"); |
3a5c3e22 | 6047 | annotate_field (5); |
112e8700 | 6048 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6049 | } |
f06f1252 TT |
6050 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6051 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6052 | { |
6053 | if (opts.addressprint) | |
6054 | { | |
6055 | annotate_field (4); | |
6056 | if (header_of_multiple) | |
7f6aba03 TT |
6057 | uiout->field_string ("addr", "<MULTIPLE>", |
6058 | metadata_style.style ()); | |
a38118e5 | 6059 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6060 | uiout->field_string ("addr", "<PENDING>", |
6061 | metadata_style.style ()); | |
a38118e5 PA |
6062 | else |
6063 | uiout->field_core_addr ("addr", | |
6064 | loc->gdbarch, loc->address); | |
6065 | } | |
6066 | annotate_field (5); | |
6067 | if (!header_of_multiple) | |
6068 | print_breakpoint_location (b, loc); | |
6069 | if (b->loc) | |
6070 | *last_loc = b->loc; | |
6071 | } | |
6072 | } | |
6c95b8df | 6073 | |
998580f1 | 6074 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6075 | { |
5c632425 | 6076 | std::vector<int> inf_nums; |
998580f1 | 6077 | int mi_only = 1; |
6c95b8df | 6078 | |
08036331 | 6079 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6080 | { |
6081 | if (inf->pspace == loc->pspace) | |
5c632425 | 6082 | inf_nums.push_back (inf->num); |
6c95b8df | 6083 | } |
998580f1 MK |
6084 | |
6085 | /* For backward compatibility, don't display inferiors in CLI unless | |
6086 | there are several. Always display for MI. */ | |
6087 | if (allflag | |
6088 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6089 | && (program_spaces.size () > 1 |
998580f1 MK |
6090 | || number_of_inferiors () > 1) |
6091 | /* LOC is for existing B, it cannot be in | |
6092 | moribund_locations and thus having NULL OWNER. */ | |
6093 | && loc->owner->type != bp_catchpoint)) | |
6094 | mi_only = 0; | |
5c632425 | 6095 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6096 | } |
6097 | ||
4a306c9a | 6098 | if (!part_of_multiple) |
c4093a6a | 6099 | { |
4a306c9a JB |
6100 | if (b->thread != -1) |
6101 | { | |
6102 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6103 | "stop only in" line a little further down. */ |
112e8700 | 6104 | uiout->text (" thread "); |
381befee | 6105 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6106 | } |
6107 | else if (b->task != 0) | |
6108 | { | |
112e8700 | 6109 | uiout->text (" task "); |
381befee | 6110 | uiout->field_signed ("task", b->task); |
4a306c9a | 6111 | } |
c4093a6a | 6112 | } |
f1310107 | 6113 | |
112e8700 | 6114 | uiout->text ("\n"); |
f1310107 | 6115 | |
348d480f | 6116 | if (!part_of_multiple) |
f1310107 TJB |
6117 | b->ops->print_one_detail (b, uiout); |
6118 | ||
0d381245 | 6119 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6120 | { |
6121 | annotate_field (6); | |
112e8700 | 6122 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6123 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6124 | the frame ID. */ |
112e8700 | 6125 | uiout->field_core_addr ("frame", |
5af949e3 | 6126 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6127 | uiout->text ("\n"); |
c4093a6a JM |
6128 | } |
6129 | ||
28010a5d | 6130 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6131 | { |
6132 | annotate_field (7); | |
d77f58be | 6133 | if (is_tracepoint (b)) |
112e8700 | 6134 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6135 | else |
112e8700 SM |
6136 | uiout->text ("\tstop only if "); |
6137 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6138 | |
6139 | /* Print whether the target is doing the breakpoint's condition | |
6140 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6141 | if (is_breakpoint (b) | |
6142 | && breakpoint_condition_evaluation_mode () | |
6143 | == condition_evaluation_target) | |
6144 | { | |
6a831f06 PA |
6145 | uiout->message (" (%pF evals)", |
6146 | string_field ("evaluated-by", | |
6147 | bp_condition_evaluator (b))); | |
b775012e | 6148 | } |
112e8700 | 6149 | uiout->text ("\n"); |
0101ce28 JJ |
6150 | } |
6151 | ||
0d381245 | 6152 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6153 | { |
4a64f543 | 6154 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6155 | uiout->text ("\tstop only in thread "); |
6156 | if (uiout->is_mi_like_p ()) | |
381befee | 6157 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6158 | else |
6159 | { | |
6160 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6161 | ||
112e8700 | 6162 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6163 | } |
112e8700 | 6164 | uiout->text ("\n"); |
c4093a6a JM |
6165 | } |
6166 | ||
556ec64d YQ |
6167 | if (!part_of_multiple) |
6168 | { | |
6169 | if (b->hit_count) | |
31f56a27 YQ |
6170 | { |
6171 | /* FIXME should make an annotation for this. */ | |
6172 | if (is_catchpoint (b)) | |
112e8700 | 6173 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6174 | else if (is_tracepoint (b)) |
112e8700 | 6175 | uiout->text ("\ttracepoint"); |
31f56a27 | 6176 | else |
112e8700 SM |
6177 | uiout->text ("\tbreakpoint"); |
6178 | uiout->text (" already hit "); | |
381befee | 6179 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6180 | if (b->hit_count == 1) |
112e8700 | 6181 | uiout->text (" time\n"); |
31f56a27 | 6182 | else |
112e8700 | 6183 | uiout->text (" times\n"); |
31f56a27 | 6184 | } |
556ec64d YQ |
6185 | else |
6186 | { | |
31f56a27 | 6187 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6188 | if (uiout->is_mi_like_p ()) |
381befee | 6189 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6190 | } |
6191 | } | |
8b93c638 | 6192 | |
0d381245 | 6193 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6194 | { |
6195 | annotate_field (8); | |
6a831f06 PA |
6196 | uiout->message ("\tignore next %pF hits\n", |
6197 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6198 | } |
059fb39f | 6199 | |
816338b5 SS |
6200 | /* Note that an enable count of 1 corresponds to "enable once" |
6201 | behavior, which is reported by the combination of enablement and | |
6202 | disposition, so we don't need to mention it here. */ | |
6203 | if (!part_of_multiple && b->enable_count > 1) | |
6204 | { | |
6205 | annotate_field (8); | |
112e8700 | 6206 | uiout->text ("\tdisable after "); |
816338b5 SS |
6207 | /* Tweak the wording to clarify that ignore and enable counts |
6208 | are distinct, and have additive effect. */ | |
6209 | if (b->ignore_count) | |
112e8700 | 6210 | uiout->text ("additional "); |
816338b5 | 6211 | else |
112e8700 | 6212 | uiout->text ("next "); |
381befee | 6213 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6214 | uiout->text (" hits\n"); |
816338b5 SS |
6215 | } |
6216 | ||
f196051f SS |
6217 | if (!part_of_multiple && is_tracepoint (b)) |
6218 | { | |
6219 | struct tracepoint *tp = (struct tracepoint *) b; | |
6220 | ||
6221 | if (tp->traceframe_usage) | |
6222 | { | |
112e8700 | 6223 | uiout->text ("\ttrace buffer usage "); |
381befee | 6224 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6225 | uiout->text (" bytes\n"); |
f196051f SS |
6226 | } |
6227 | } | |
d3ce09f5 | 6228 | |
d1b0a7bf | 6229 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6230 | if (!part_of_multiple && l) |
c4093a6a JM |
6231 | { |
6232 | annotate_field (9); | |
2e783024 | 6233 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6234 | print_command_lines (uiout, l, 4); |
c4093a6a | 6235 | } |
d24317b4 | 6236 | |
d9b3f62e | 6237 | if (is_tracepoint (b)) |
1042e4c0 | 6238 | { |
d9b3f62e PA |
6239 | struct tracepoint *t = (struct tracepoint *) b; |
6240 | ||
6241 | if (!part_of_multiple && t->pass_count) | |
6242 | { | |
6243 | annotate_field (10); | |
112e8700 | 6244 | uiout->text ("\tpass count "); |
381befee | 6245 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6246 | uiout->text (" \n"); |
d9b3f62e | 6247 | } |
f2a8bc8a YQ |
6248 | |
6249 | /* Don't display it when tracepoint or tracepoint location is | |
6250 | pending. */ | |
6251 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6252 | { | |
6253 | annotate_field (11); | |
6254 | ||
112e8700 SM |
6255 | if (uiout->is_mi_like_p ()) |
6256 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6257 | loc->inserted ? "y" : "n"); |
6258 | else | |
6259 | { | |
6260 | if (loc->inserted) | |
112e8700 | 6261 | uiout->text ("\t"); |
f2a8bc8a | 6262 | else |
112e8700 SM |
6263 | uiout->text ("\tnot "); |
6264 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6265 | } |
6266 | } | |
1042e4c0 SS |
6267 | } |
6268 | ||
112e8700 | 6269 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6270 | { |
3a5c3e22 PA |
6271 | if (is_watchpoint (b)) |
6272 | { | |
6273 | struct watchpoint *w = (struct watchpoint *) b; | |
6274 | ||
112e8700 | 6275 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6276 | } |
f00aae0f | 6277 | else if (b->location != NULL |
d28cd78a | 6278 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6279 | uiout->field_string ("original-location", |
d28cd78a | 6280 | event_location_to_string (b->location.get ())); |
d24317b4 | 6281 | } |
c4093a6a | 6282 | } |
c5aa993b | 6283 | |
13674803 SM |
6284 | /* See breakpoint.h. */ |
6285 | ||
6286 | bool fix_multi_location_breakpoint_output_globally = false; | |
6287 | ||
0d381245 VP |
6288 | static void |
6289 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6290 | struct bp_location **last_loc, |
6c95b8df | 6291 | int allflag) |
0d381245 | 6292 | { |
79a45e25 | 6293 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6294 | bool use_fixed_output |
6295 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6296 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6297 | |
b4be1b06 | 6298 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6299 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6300 | |
b4be1b06 SM |
6301 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6302 | are outside. */ | |
6303 | if (!use_fixed_output) | |
6304 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6305 | |
6306 | /* If this breakpoint has custom print function, | |
6307 | it's already printed. Otherwise, print individual | |
6308 | locations, if any. */ | |
a38118e5 PA |
6309 | if (b->ops == NULL |
6310 | || b->ops->print_one == NULL | |
6311 | || allflag) | |
0d381245 | 6312 | { |
4a64f543 MS |
6313 | /* If breakpoint has a single location that is disabled, we |
6314 | print it as if it had several locations, since otherwise it's | |
6315 | hard to represent "breakpoint enabled, location disabled" | |
6316 | situation. | |
6317 | ||
6318 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6319 | internally, that's not a property exposed to users. |
6320 | ||
6321 | Likewise, while catchpoints may be implemented with | |
6322 | breakpoints (e.g., catch throw), that's not a property | |
6323 | exposed to users. We do however display the internal | |
6324 | breakpoint locations with "maint info breakpoints". */ | |
6325 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6326 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6327 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6328 | && (allflag |
6329 | || (b->loc && (b->loc->next || !b->loc->enabled)))) | |
0d381245 | 6330 | { |
b4be1b06 SM |
6331 | gdb::optional<ui_out_emit_list> locations_list; |
6332 | ||
6333 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6334 | MI record. For later versions, place breakpoint locations in a | |
6335 | list. */ | |
6336 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6337 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6338 | |
b4be1b06 SM |
6339 | int n = 1; |
6340 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6341 | { |
b4be1b06 | 6342 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6343 | print_one_breakpoint_location (b, loc, n, last_loc, |
6344 | allflag, allflag); | |
8d3788bd | 6345 | } |
0d381245 VP |
6346 | } |
6347 | } | |
6348 | } | |
6349 | ||
a6d9a66e UW |
6350 | static int |
6351 | breakpoint_address_bits (struct breakpoint *b) | |
6352 | { | |
6353 | int print_address_bits = 0; | |
6354 | struct bp_location *loc; | |
6355 | ||
c6d81124 PA |
6356 | /* Software watchpoints that aren't watching memory don't have an |
6357 | address to print. */ | |
6358 | if (is_no_memory_software_watchpoint (b)) | |
6359 | return 0; | |
6360 | ||
a6d9a66e UW |
6361 | for (loc = b->loc; loc; loc = loc->next) |
6362 | { | |
c7437ca6 PA |
6363 | int addr_bit; |
6364 | ||
c7437ca6 | 6365 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6366 | if (addr_bit > print_address_bits) |
6367 | print_address_bits = addr_bit; | |
6368 | } | |
6369 | ||
6370 | return print_address_bits; | |
6371 | } | |
0d381245 | 6372 | |
65630365 | 6373 | /* See breakpoint.h. */ |
c5aa993b | 6374 | |
65630365 PA |
6375 | void |
6376 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6377 | { |
a6d9a66e | 6378 | struct bp_location *dummy_loc = NULL; |
65630365 | 6379 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6380 | } |
c5aa993b | 6381 | |
09d682a4 TT |
6382 | /* Return true if this breakpoint was set by the user, false if it is |
6383 | internal or momentary. */ | |
6384 | ||
6385 | int | |
6386 | user_breakpoint_p (struct breakpoint *b) | |
6387 | { | |
46c6471b | 6388 | return b->number > 0; |
09d682a4 TT |
6389 | } |
6390 | ||
93daf339 TT |
6391 | /* See breakpoint.h. */ |
6392 | ||
6393 | int | |
6394 | pending_breakpoint_p (struct breakpoint *b) | |
6395 | { | |
6396 | return b->loc == NULL; | |
6397 | } | |
6398 | ||
5c458ae8 SM |
6399 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6400 | ||
6401 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6402 | understood by number_or_range_parser. Only breakpoints included in this | |
6403 | list are then printed. | |
6404 | ||
6405 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6406 | ||
6407 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6408 | ones for which it returns true. | |
6409 | ||
6410 | Return the total number of breakpoints listed. */ | |
c906108c | 6411 | |
d77f58be | 6412 | static int |
5c458ae8 | 6413 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6414 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6415 | { |
52f0bd74 | 6416 | struct breakpoint *b; |
a6d9a66e | 6417 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6418 | int nr_printable_breakpoints; |
79a45b7d | 6419 | struct value_print_options opts; |
a6d9a66e | 6420 | int print_address_bits = 0; |
269b11a2 | 6421 | int print_type_col_width = 14; |
79a45e25 | 6422 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6423 | |
79a45b7d TT |
6424 | get_user_print_options (&opts); |
6425 | ||
4a64f543 MS |
6426 | /* Compute the number of rows in the table, as well as the size |
6427 | required for address fields. */ | |
7f3b0473 AC |
6428 | nr_printable_breakpoints = 0; |
6429 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6430 | { |
6431 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6432 | if (filter && !filter (b)) | |
6433 | continue; | |
6434 | ||
5c458ae8 | 6435 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6436 | accept. Skip the others. */ |
5c458ae8 | 6437 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6438 | { |
5c458ae8 | 6439 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6440 | continue; |
5c458ae8 | 6441 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6442 | continue; |
6443 | } | |
269b11a2 | 6444 | |
5c458ae8 | 6445 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6446 | { |
6447 | int addr_bit, type_len; | |
a6d9a66e | 6448 | |
e5a67952 MS |
6449 | addr_bit = breakpoint_address_bits (b); |
6450 | if (addr_bit > print_address_bits) | |
6451 | print_address_bits = addr_bit; | |
269b11a2 | 6452 | |
e5a67952 MS |
6453 | type_len = strlen (bptype_string (b->type)); |
6454 | if (type_len > print_type_col_width) | |
6455 | print_type_col_width = type_len; | |
6456 | ||
6457 | nr_printable_breakpoints++; | |
6458 | } | |
6459 | } | |
7f3b0473 | 6460 | |
4a2b031d TT |
6461 | { |
6462 | ui_out_emit_table table_emitter (uiout, | |
6463 | opts.addressprint ? 6 : 5, | |
6464 | nr_printable_breakpoints, | |
6465 | "BreakpointTable"); | |
6466 | ||
6467 | if (nr_printable_breakpoints > 0) | |
6468 | annotate_breakpoints_headers (); | |
6469 | if (nr_printable_breakpoints > 0) | |
6470 | annotate_field (0); | |
6471 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6472 | if (nr_printable_breakpoints > 0) | |
6473 | annotate_field (1); | |
6474 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6475 | if (nr_printable_breakpoints > 0) | |
6476 | annotate_field (2); | |
6477 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6478 | if (nr_printable_breakpoints > 0) | |
6479 | annotate_field (3); | |
6480 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6481 | if (opts.addressprint) | |
6482 | { | |
6483 | if (nr_printable_breakpoints > 0) | |
6484 | annotate_field (4); | |
6485 | if (print_address_bits <= 32) | |
6486 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6487 | else | |
6488 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6489 | } | |
6490 | if (nr_printable_breakpoints > 0) | |
6491 | annotate_field (5); | |
6492 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6493 | uiout->table_body (); | |
6494 | if (nr_printable_breakpoints > 0) | |
6495 | annotate_breakpoints_table (); | |
6496 | ||
6497 | ALL_BREAKPOINTS (b) | |
6498 | { | |
6499 | QUIT; | |
6500 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6501 | if (filter && !filter (b)) | |
6502 | continue; | |
e5a67952 | 6503 | |
5c458ae8 | 6504 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6505 | accept. Skip the others. */ |
e5a67952 | 6506 | |
5c458ae8 | 6507 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6508 | { |
5c458ae8 | 6509 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6510 | { |
5c458ae8 | 6511 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6512 | continue; |
6513 | } | |
6514 | else /* all others */ | |
6515 | { | |
5c458ae8 | 6516 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6517 | continue; |
6518 | } | |
6519 | } | |
6520 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6521 | show_internal is set. */ |
6522 | if (show_internal || user_breakpoint_p (b)) | |
6523 | print_one_breakpoint (b, &last_loc, show_internal); | |
4a2b031d TT |
6524 | } |
6525 | } | |
698384cd | 6526 | |
7f3b0473 | 6527 | if (nr_printable_breakpoints == 0) |
c906108c | 6528 | { |
4a64f543 MS |
6529 | /* If there's a filter, let the caller decide how to report |
6530 | empty list. */ | |
d77f58be SS |
6531 | if (!filter) |
6532 | { | |
5c458ae8 | 6533 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6534 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6535 | else |
112e8700 | 6536 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6537 | bp_num_list); |
d77f58be | 6538 | } |
c906108c SS |
6539 | } |
6540 | else | |
c4093a6a | 6541 | { |
a6d9a66e UW |
6542 | if (last_loc && !server_command) |
6543 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6544 | } |
c906108c | 6545 | |
4a64f543 | 6546 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6547 | there have been breakpoints? */ |
c906108c | 6548 | annotate_breakpoints_table_end (); |
d77f58be SS |
6549 | |
6550 | return nr_printable_breakpoints; | |
c906108c SS |
6551 | } |
6552 | ||
ad443146 SS |
6553 | /* Display the value of default-collect in a way that is generally |
6554 | compatible with the breakpoint list. */ | |
6555 | ||
6556 | static void | |
6557 | default_collect_info (void) | |
6558 | { | |
79a45e25 PA |
6559 | struct ui_out *uiout = current_uiout; |
6560 | ||
ad443146 SS |
6561 | /* If it has no value (which is frequently the case), say nothing; a |
6562 | message like "No default-collect." gets in user's face when it's | |
6563 | not wanted. */ | |
6564 | if (!*default_collect) | |
6565 | return; | |
6566 | ||
6567 | /* The following phrase lines up nicely with per-tracepoint collect | |
6568 | actions. */ | |
112e8700 SM |
6569 | uiout->text ("default collect "); |
6570 | uiout->field_string ("default-collect", default_collect); | |
6571 | uiout->text (" \n"); | |
ad443146 SS |
6572 | } |
6573 | ||
c906108c | 6574 | static void |
0b39b52e | 6575 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6576 | { |
5c458ae8 | 6577 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6578 | |
6579 | default_collect_info (); | |
d77f58be SS |
6580 | } |
6581 | ||
6582 | static void | |
1d12d88f | 6583 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6584 | { |
5c458ae8 | 6585 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6586 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6587 | |
6588 | if (num_printed == 0) | |
6589 | { | |
e5a67952 | 6590 | if (args == NULL || *args == '\0') |
112e8700 | 6591 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6592 | else |
112e8700 | 6593 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6594 | } |
c906108c SS |
6595 | } |
6596 | ||
7a292a7a | 6597 | static void |
4495129a | 6598 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6599 | { |
5c458ae8 | 6600 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6601 | |
6602 | default_collect_info (); | |
c906108c SS |
6603 | } |
6604 | ||
0d381245 | 6605 | static int |
714835d5 | 6606 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6607 | struct program_space *pspace, |
714835d5 | 6608 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6609 | { |
6610 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6611 | |
0d381245 VP |
6612 | for (; bl; bl = bl->next) |
6613 | { | |
6c95b8df PA |
6614 | if (bl->pspace == pspace |
6615 | && bl->address == pc | |
0d381245 VP |
6616 | && (!overlay_debugging || bl->section == section)) |
6617 | return 1; | |
6618 | } | |
6619 | return 0; | |
6620 | } | |
6621 | ||
672f9b60 | 6622 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6623 | concerns with logical breakpoints, so we match program spaces, not |
6624 | address spaces. */ | |
c906108c SS |
6625 | |
6626 | static void | |
6c95b8df PA |
6627 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6628 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6629 | struct obj_section *section, int thread) |
c906108c | 6630 | { |
52f0bd74 AC |
6631 | int others = 0; |
6632 | struct breakpoint *b; | |
c906108c SS |
6633 | |
6634 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6635 | others += (user_breakpoint_p (b) |
6636 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6637 | if (others > 0) |
6638 | { | |
a3f17187 AC |
6639 | if (others == 1) |
6640 | printf_filtered (_("Note: breakpoint ")); | |
6641 | else /* if (others == ???) */ | |
6642 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6643 | ALL_BREAKPOINTS (b) |
672f9b60 | 6644 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6645 | { |
6646 | others--; | |
6647 | printf_filtered ("%d", b->number); | |
6648 | if (b->thread == -1 && thread != -1) | |
6649 | printf_filtered (" (all threads)"); | |
6650 | else if (b->thread != -1) | |
6651 | printf_filtered (" (thread %d)", b->thread); | |
6652 | printf_filtered ("%s%s ", | |
059fb39f | 6653 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6654 | || b->enable_state == bp_call_disabled) |
0d381245 | 6655 | ? " (disabled)" |
0d381245 VP |
6656 | : ""), |
6657 | (others > 1) ? "," | |
6658 | : ((others == 1) ? " and" : "")); | |
6659 | } | |
6a831f06 PA |
6660 | current_uiout->message (_("also set at pc %ps.\n"), |
6661 | styled_string (address_style.style (), | |
6662 | paddress (gdbarch, pc))); | |
c906108c SS |
6663 | } |
6664 | } | |
6665 | \f | |
c906108c | 6666 | |
cb1e4e32 PA |
6667 | /* Return true iff it is meaningful to use the address member of LOC. |
6668 | For some breakpoint types, the locations' address members are | |
6669 | irrelevant and it makes no sense to attempt to compare them to | |
6670 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6671 | |
cb1e4e32 PA |
6672 | More specifically, software watchpoints and catchpoints that are |
6673 | not backed by breakpoints always have a zero valued location | |
6674 | address and we don't want to mark breakpoints of any of these types | |
6675 | to be a duplicate of an actual breakpoint location at address | |
6676 | zero. */ | |
e4f237da | 6677 | |
cb1e4e32 PA |
6678 | static bool |
6679 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6680 | { |
cb1e4e32 | 6681 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6682 | } |
6683 | ||
6684 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6685 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6686 | ||
6687 | static int | |
4a64f543 MS |
6688 | watchpoint_locations_match (struct bp_location *loc1, |
6689 | struct bp_location *loc2) | |
2d134ed3 | 6690 | { |
3a5c3e22 PA |
6691 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6692 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6693 | ||
6694 | /* Both of them must exist. */ | |
6695 | gdb_assert (w1 != NULL); | |
6696 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6697 | |
4a64f543 MS |
6698 | /* If the target can evaluate the condition expression in hardware, |
6699 | then we we need to insert both watchpoints even if they are at | |
6700 | the same place. Otherwise the watchpoint will only trigger when | |
6701 | the condition of whichever watchpoint was inserted evaluates to | |
6702 | true, not giving a chance for GDB to check the condition of the | |
6703 | other watchpoint. */ | |
3a5c3e22 | 6704 | if ((w1->cond_exp |
4a64f543 MS |
6705 | && target_can_accel_watchpoint_condition (loc1->address, |
6706 | loc1->length, | |
0cf6dd15 | 6707 | loc1->watchpoint_type, |
4d01a485 | 6708 | w1->cond_exp.get ())) |
3a5c3e22 | 6709 | || (w2->cond_exp |
4a64f543 MS |
6710 | && target_can_accel_watchpoint_condition (loc2->address, |
6711 | loc2->length, | |
0cf6dd15 | 6712 | loc2->watchpoint_type, |
4d01a485 | 6713 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6714 | return 0; |
6715 | ||
85d721b8 PA |
6716 | /* Note that this checks the owner's type, not the location's. In |
6717 | case the target does not support read watchpoints, but does | |
6718 | support access watchpoints, we'll have bp_read_watchpoint | |
6719 | watchpoints with hw_access locations. Those should be considered | |
6720 | duplicates of hw_read locations. The hw_read locations will | |
6721 | become hw_access locations later. */ | |
2d134ed3 PA |
6722 | return (loc1->owner->type == loc2->owner->type |
6723 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6724 | && loc1->address == loc2->address | |
6725 | && loc1->length == loc2->length); | |
e4f237da KB |
6726 | } |
6727 | ||
31e77af2 | 6728 | /* See breakpoint.h. */ |
6c95b8df | 6729 | |
31e77af2 | 6730 | int |
accd0bcd YQ |
6731 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6732 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6733 | { |
f5656ead | 6734 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6735 | || aspace1 == aspace2) |
6736 | && addr1 == addr2); | |
6737 | } | |
6738 | ||
f1310107 TJB |
6739 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6740 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6741 | matches ASPACE2. On targets that have global breakpoints, the address | |
6742 | space doesn't really matter. */ | |
6743 | ||
6744 | static int | |
accd0bcd YQ |
6745 | breakpoint_address_match_range (const address_space *aspace1, |
6746 | CORE_ADDR addr1, | |
6747 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6748 | CORE_ADDR addr2) |
6749 | { | |
f5656ead | 6750 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6751 | || aspace1 == aspace2) |
6752 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6753 | } | |
6754 | ||
6755 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6756 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6757 | matches the breakpoint's address space. On targets that have global | |
6758 | breakpoints, the address space doesn't really matter. */ | |
6759 | ||
6760 | static int | |
6761 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6762 | const address_space *aspace, |
f1310107 TJB |
6763 | CORE_ADDR addr) |
6764 | { | |
6765 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6766 | aspace, addr) | |
6767 | || (bl->length | |
6768 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6769 | bl->address, bl->length, | |
6770 | aspace, addr))); | |
6771 | } | |
6772 | ||
d35ae833 PA |
6773 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6774 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6775 | match happens only if ASPACE matches the breakpoint's address | |
6776 | space. On targets that have global breakpoints, the address space | |
6777 | doesn't really matter. */ | |
6778 | ||
6779 | static int | |
6780 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6781 | const address_space *aspace, |
d35ae833 PA |
6782 | CORE_ADDR addr, int len) |
6783 | { | |
6784 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6785 | || bl->pspace->aspace == aspace) | |
6786 | { | |
6787 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6788 | ||
6789 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6790 | return 1; | |
6791 | } | |
6792 | return 0; | |
6793 | } | |
6794 | ||
1e4d1764 YQ |
6795 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6796 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6797 | true, otherwise returns false. */ | |
6798 | ||
6799 | static int | |
6800 | tracepoint_locations_match (struct bp_location *loc1, | |
6801 | struct bp_location *loc2) | |
6802 | { | |
6803 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6804 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6805 | locations at the same address of different tracepoints are regarded as | |
6806 | different locations. */ | |
6807 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6808 | else | |
6809 | return 0; | |
6810 | } | |
6811 | ||
2d134ed3 | 6812 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 PA |
6813 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
6814 | the same location. */ | |
2d134ed3 PA |
6815 | |
6816 | static int | |
4a64f543 MS |
6817 | breakpoint_locations_match (struct bp_location *loc1, |
6818 | struct bp_location *loc2) | |
2d134ed3 | 6819 | { |
2bdf28a0 JK |
6820 | int hw_point1, hw_point2; |
6821 | ||
6822 | /* Both of them must not be in moribund_locations. */ | |
6823 | gdb_assert (loc1->owner != NULL); | |
6824 | gdb_assert (loc2->owner != NULL); | |
6825 | ||
6826 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6827 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6828 | |
6829 | if (hw_point1 != hw_point2) | |
6830 | return 0; | |
6831 | else if (hw_point1) | |
6832 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6833 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6834 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6835 | else |
f1310107 TJB |
6836 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6837 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6838 | loc2->pspace->aspace, loc2->address) | |
6839 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6840 | } |
6841 | ||
76897487 KB |
6842 | static void |
6843 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6844 | int bnum, int have_bnum) | |
6845 | { | |
f63fbe86 MS |
6846 | /* The longest string possibly returned by hex_string_custom |
6847 | is 50 chars. These must be at least that big for safety. */ | |
6848 | char astr1[64]; | |
6849 | char astr2[64]; | |
76897487 | 6850 | |
bb599908 PH |
6851 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6852 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6853 | if (have_bnum) |
8a3fe4f8 | 6854 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6855 | bnum, astr1, astr2); |
6856 | else | |
8a3fe4f8 | 6857 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6858 | } |
6859 | ||
4a64f543 MS |
6860 | /* Adjust a breakpoint's address to account for architectural |
6861 | constraints on breakpoint placement. Return the adjusted address. | |
6862 | Note: Very few targets require this kind of adjustment. For most | |
6863 | targets, this function is simply the identity function. */ | |
76897487 KB |
6864 | |
6865 | static CORE_ADDR | |
a6d9a66e UW |
6866 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6867 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6868 | { |
a0de8c21 YQ |
6869 | if (bptype == bp_watchpoint |
6870 | || bptype == bp_hardware_watchpoint | |
6871 | || bptype == bp_read_watchpoint | |
6872 | || bptype == bp_access_watchpoint | |
6873 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6874 | { |
6875 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6876 | have their addresses modified. */ | |
6877 | return bpaddr; | |
6878 | } | |
7c16b83e PA |
6879 | else if (bptype == bp_single_step) |
6880 | { | |
6881 | /* Single-step breakpoints should not have their addresses | |
6882 | modified. If there's any architectural constrain that | |
6883 | applies to this address, then it should have already been | |
6884 | taken into account when the breakpoint was created in the | |
6885 | first place. If we didn't do this, stepping through e.g., | |
6886 | Thumb-2 IT blocks would break. */ | |
6887 | return bpaddr; | |
6888 | } | |
76897487 KB |
6889 | else |
6890 | { | |
a0de8c21 YQ |
6891 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6892 | ||
6893 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6894 | { | |
6895 | /* Some targets have architectural constraints on the placement | |
6896 | of breakpoint instructions. Obtain the adjusted address. */ | |
6897 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6898 | } | |
76897487 | 6899 | |
a0de8c21 | 6900 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6901 | |
6902 | /* An adjusted breakpoint address can significantly alter | |
6903 | a user's expectations. Print a warning if an adjustment | |
6904 | is required. */ | |
6905 | if (adjusted_bpaddr != bpaddr) | |
6906 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6907 | ||
6908 | return adjusted_bpaddr; | |
6909 | } | |
6910 | } | |
6911 | ||
cb1e4e32 PA |
6912 | static bp_loc_type |
6913 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 6914 | { |
cb1e4e32 | 6915 | switch (type) |
e049a4b5 DJ |
6916 | { |
6917 | case bp_breakpoint: | |
7c16b83e | 6918 | case bp_single_step: |
e049a4b5 DJ |
6919 | case bp_until: |
6920 | case bp_finish: | |
6921 | case bp_longjmp: | |
6922 | case bp_longjmp_resume: | |
e2e4d78b | 6923 | case bp_longjmp_call_dummy: |
186c406b TT |
6924 | case bp_exception: |
6925 | case bp_exception_resume: | |
e049a4b5 | 6926 | case bp_step_resume: |
2c03e5be | 6927 | case bp_hp_step_resume: |
e049a4b5 DJ |
6928 | case bp_watchpoint_scope: |
6929 | case bp_call_dummy: | |
aa7d318d | 6930 | case bp_std_terminate: |
e049a4b5 DJ |
6931 | case bp_shlib_event: |
6932 | case bp_thread_event: | |
6933 | case bp_overlay_event: | |
4efc6507 | 6934 | case bp_jit_event: |
0fd8e87f | 6935 | case bp_longjmp_master: |
aa7d318d | 6936 | case bp_std_terminate_master: |
186c406b | 6937 | case bp_exception_master: |
0e30163f JK |
6938 | case bp_gnu_ifunc_resolver: |
6939 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6940 | case bp_dprintf: |
cb1e4e32 | 6941 | return bp_loc_software_breakpoint; |
e049a4b5 | 6942 | case bp_hardware_breakpoint: |
cb1e4e32 | 6943 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
6944 | case bp_hardware_watchpoint: |
6945 | case bp_read_watchpoint: | |
6946 | case bp_access_watchpoint: | |
cb1e4e32 | 6947 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 6948 | case bp_watchpoint: |
ce78b96d | 6949 | case bp_catchpoint: |
15c3d785 PA |
6950 | case bp_tracepoint: |
6951 | case bp_fast_tracepoint: | |
0fb4aa4b | 6952 | case bp_static_tracepoint: |
cb1e4e32 | 6953 | return bp_loc_other; |
e049a4b5 | 6954 | default: |
e2e0b3e5 | 6955 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 6956 | } |
cb1e4e32 PA |
6957 | } |
6958 | ||
6959 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
6960 | { | |
6961 | this->owner = owner; | |
6962 | this->cond_bytecode = NULL; | |
6963 | this->shlib_disabled = 0; | |
6964 | this->enabled = 1; | |
6965 | ||
6966 | this->loc_type = type; | |
e049a4b5 | 6967 | |
cb1e4e32 PA |
6968 | if (this->loc_type == bp_loc_software_breakpoint |
6969 | || this->loc_type == bp_loc_hardware_breakpoint) | |
6970 | mark_breakpoint_location_modified (this); | |
6971 | ||
6972 | this->refc = 1; | |
6973 | } | |
6974 | ||
6975 | bp_location::bp_location (breakpoint *owner) | |
6976 | : bp_location::bp_location (owner, | |
6977 | bp_location_from_bp_type (owner->type)) | |
6978 | { | |
28010a5d PA |
6979 | } |
6980 | ||
6981 | /* Allocate a struct bp_location. */ | |
6982 | ||
6983 | static struct bp_location * | |
6984 | allocate_bp_location (struct breakpoint *bpt) | |
6985 | { | |
348d480f PA |
6986 | return bpt->ops->allocate_location (bpt); |
6987 | } | |
7cc221ef | 6988 | |
f431efe5 PA |
6989 | static void |
6990 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6991 | { |
4d01a485 | 6992 | delete loc; |
fe3f5fa8 VP |
6993 | } |
6994 | ||
f431efe5 PA |
6995 | /* Increment reference count. */ |
6996 | ||
6997 | static void | |
6998 | incref_bp_location (struct bp_location *bl) | |
6999 | { | |
7000 | ++bl->refc; | |
7001 | } | |
7002 | ||
7003 | /* Decrement reference count. If the reference count reaches 0, | |
7004 | destroy the bp_location. Sets *BLP to NULL. */ | |
7005 | ||
7006 | static void | |
7007 | decref_bp_location (struct bp_location **blp) | |
7008 | { | |
0807b50c PA |
7009 | gdb_assert ((*blp)->refc > 0); |
7010 | ||
f431efe5 PA |
7011 | if (--(*blp)->refc == 0) |
7012 | free_bp_location (*blp); | |
7013 | *blp = NULL; | |
7014 | } | |
7015 | ||
346774a9 | 7016 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7017 | |
b270e6f9 TT |
7018 | static breakpoint * |
7019 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7020 | { |
346774a9 | 7021 | struct breakpoint *b1; |
b270e6f9 | 7022 | struct breakpoint *result = b.get (); |
c906108c | 7023 | |
346774a9 PA |
7024 | /* Add this breakpoint to the end of the chain so that a list of |
7025 | breakpoints will come out in order of increasing numbers. */ | |
7026 | ||
7027 | b1 = breakpoint_chain; | |
7028 | if (b1 == 0) | |
b270e6f9 | 7029 | breakpoint_chain = b.release (); |
346774a9 PA |
7030 | else |
7031 | { | |
7032 | while (b1->next) | |
7033 | b1 = b1->next; | |
b270e6f9 | 7034 | b1->next = b.release (); |
346774a9 | 7035 | } |
b270e6f9 TT |
7036 | |
7037 | return result; | |
346774a9 PA |
7038 | } |
7039 | ||
7040 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7041 | ||
7042 | static void | |
7043 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7044 | struct gdbarch *gdbarch, | |
28010a5d | 7045 | enum bptype bptype, |
c0a91b2b | 7046 | const struct breakpoint_ops *ops) |
346774a9 | 7047 | { |
348d480f PA |
7048 | gdb_assert (ops != NULL); |
7049 | ||
28010a5d | 7050 | b->ops = ops; |
4d28f7a8 | 7051 | b->type = bptype; |
a6d9a66e | 7052 | b->gdbarch = gdbarch; |
c906108c SS |
7053 | b->language = current_language->la_language; |
7054 | b->input_radix = input_radix; | |
d0fb5eae | 7055 | b->related_breakpoint = b; |
346774a9 PA |
7056 | } |
7057 | ||
7058 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7059 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7060 | |
7061 | static struct breakpoint * | |
7062 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7063 | enum bptype bptype, |
c0a91b2b | 7064 | const struct breakpoint_ops *ops) |
346774a9 | 7065 | { |
3b0871f4 | 7066 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7067 | |
3b0871f4 | 7068 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7069 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7070 | } |
7071 | ||
0ba852ab | 7072 | /* Initialize loc->function_name. */ |
0e30163f | 7073 | |
0d381245 | 7074 | static void |
0ba852ab | 7075 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7076 | { |
2bdf28a0 JK |
7077 | gdb_assert (loc->owner != NULL); |
7078 | ||
0d381245 | 7079 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7080 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7081 | || is_tracepoint (loc->owner)) |
0d381245 | 7082 | { |
2c02bd72 | 7083 | const char *function_name; |
0e30163f | 7084 | |
3467ec66 | 7085 | if (loc->msymbol != NULL |
f50776aa | 7086 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7087 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7088 | { |
7089 | struct breakpoint *b = loc->owner; | |
7090 | ||
c9d95fa3 | 7091 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7092 | |
7093 | if (b->type == bp_breakpoint && b->loc == loc | |
7094 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7095 | { |
7096 | /* Create only the whole new breakpoint of this type but do not | |
7097 | mess more complicated breakpoints with multiple locations. */ | |
7098 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7099 | /* Remember the resolver's address for use by the return |
7100 | breakpoint. */ | |
3467ec66 | 7101 | loc->related_address = loc->address; |
0e30163f JK |
7102 | } |
7103 | } | |
3467ec66 PA |
7104 | else |
7105 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7106 | |
2c02bd72 DE |
7107 | if (function_name) |
7108 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7109 | } |
7110 | } | |
7111 | ||
a6d9a66e | 7112 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7113 | struct gdbarch * |
a6d9a66e UW |
7114 | get_sal_arch (struct symtab_and_line sal) |
7115 | { | |
7116 | if (sal.section) | |
08feed99 | 7117 | return sal.section->objfile->arch (); |
a6d9a66e | 7118 | if (sal.symtab) |
08feed99 | 7119 | return SYMTAB_OBJFILE (sal.symtab)->arch (); |
a6d9a66e UW |
7120 | |
7121 | return NULL; | |
7122 | } | |
7123 | ||
346774a9 PA |
7124 | /* Low level routine for partially initializing a breakpoint of type |
7125 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7126 | file name, and line number are provided by SAL. |
0d381245 VP |
7127 | |
7128 | It is expected that the caller will complete the initialization of | |
7129 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7130 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7131 | |
346774a9 PA |
7132 | static void |
7133 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7134 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7135 | const struct breakpoint_ops *ops) |
0d381245 | 7136 | { |
28010a5d | 7137 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7138 | |
3742cc8b | 7139 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7140 | |
6c95b8df PA |
7141 | if (bptype != bp_catchpoint) |
7142 | gdb_assert (sal.pspace != NULL); | |
7143 | ||
f8eba3c6 TT |
7144 | /* Store the program space that was used to set the breakpoint, |
7145 | except for ordinary breakpoints, which are independent of the | |
7146 | program space. */ | |
7147 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7148 | b->pspace = sal.pspace; | |
346774a9 | 7149 | } |
c906108c | 7150 | |
346774a9 PA |
7151 | /* set_raw_breakpoint is a low level routine for allocating and |
7152 | partially initializing a breakpoint of type BPTYPE. The newly | |
7153 | created breakpoint's address, section, source file name, and line | |
7154 | number are provided by SAL. The newly created and partially | |
7155 | initialized breakpoint is added to the breakpoint chain and | |
7156 | is also returned as the value of this function. | |
7157 | ||
7158 | It is expected that the caller will complete the initialization of | |
7159 | the newly created breakpoint struct as well as output any status | |
7160 | information regarding the creation of a new breakpoint. In | |
7161 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7162 | number! Care should be taken to not allow an error to occur | |
7163 | prior to completing the initialization of the breakpoint. If this | |
7164 | should happen, a bogus breakpoint will be left on the chain. */ | |
7165 | ||
7166 | struct breakpoint * | |
7167 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7168 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7169 | const struct breakpoint_ops *ops) |
346774a9 | 7170 | { |
3b0871f4 | 7171 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7172 | |
3b0871f4 | 7173 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7174 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7175 | } |
7176 | ||
53a5351d | 7177 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7178 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7179 | initiated the operation. */ | |
c906108c SS |
7180 | |
7181 | void | |
186c406b | 7182 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7183 | { |
35df4500 | 7184 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7185 | int thread = tp->global_num; |
0fd8e87f UW |
7186 | |
7187 | /* To avoid having to rescan all objfile symbols at every step, | |
7188 | we maintain a list of continually-inserted but always disabled | |
7189 | longjmp "master" breakpoints. Here, we simply create momentary | |
7190 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7191 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7192 | if (b->pspace == current_program_space |
186c406b TT |
7193 | && (b->type == bp_longjmp_master |
7194 | || b->type == bp_exception_master)) | |
0fd8e87f | 7195 | { |
06edf0c0 PA |
7196 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7197 | struct breakpoint *clone; | |
cc59ec59 | 7198 | |
e2e4d78b JK |
7199 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7200 | after their removal. */ | |
06edf0c0 | 7201 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7202 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7203 | clone->thread = thread; |
7204 | } | |
186c406b TT |
7205 | |
7206 | tp->initiating_frame = frame; | |
c906108c SS |
7207 | } |
7208 | ||
611c83ae | 7209 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7210 | void |
611c83ae | 7211 | delete_longjmp_breakpoint (int thread) |
c906108c | 7212 | { |
35df4500 | 7213 | struct breakpoint *b, *b_tmp; |
c906108c | 7214 | |
35df4500 | 7215 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7216 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7217 | { |
7218 | if (b->thread == thread) | |
7219 | delete_breakpoint (b); | |
7220 | } | |
c906108c SS |
7221 | } |
7222 | ||
f59f708a PA |
7223 | void |
7224 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7225 | { | |
7226 | struct breakpoint *b, *b_tmp; | |
7227 | ||
7228 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7229 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7230 | { | |
7231 | if (b->thread == thread) | |
7232 | b->disposition = disp_del_at_next_stop; | |
7233 | } | |
7234 | } | |
7235 | ||
e2e4d78b JK |
7236 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7237 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7238 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7239 | breakpoints. */ | |
7240 | ||
7241 | struct breakpoint * | |
7242 | set_longjmp_breakpoint_for_call_dummy (void) | |
7243 | { | |
7244 | struct breakpoint *b, *retval = NULL; | |
7245 | ||
7246 | ALL_BREAKPOINTS (b) | |
7247 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7248 | { | |
7249 | struct breakpoint *new_b; | |
7250 | ||
7251 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7252 | &momentary_breakpoint_ops, |
7253 | 1); | |
00431a78 | 7254 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7255 | |
7256 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7257 | ||
7258 | gdb_assert (new_b->related_breakpoint == new_b); | |
7259 | if (retval == NULL) | |
7260 | retval = new_b; | |
7261 | new_b->related_breakpoint = retval; | |
7262 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7263 | retval = retval->related_breakpoint; | |
7264 | retval->related_breakpoint = new_b; | |
7265 | } | |
7266 | ||
7267 | return retval; | |
7268 | } | |
7269 | ||
7270 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7271 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7272 | stack. |
7273 | ||
7274 | You should call this function only at places where it is safe to currently | |
7275 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7276 | frames. */ | |
7277 | ||
7278 | void | |
b67a2c6f | 7279 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7280 | { |
7281 | struct breakpoint *b, *b_tmp; | |
7282 | ||
7283 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7284 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7285 | { |
7286 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7287 | ||
7288 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7289 | dummy_b = dummy_b->related_breakpoint; | |
7290 | if (dummy_b->type != bp_call_dummy | |
7291 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7292 | continue; | |
7293 | ||
00431a78 | 7294 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7295 | |
7296 | while (b->related_breakpoint != b) | |
7297 | { | |
7298 | if (b_tmp == b->related_breakpoint) | |
7299 | b_tmp = b->related_breakpoint->next; | |
7300 | delete_breakpoint (b->related_breakpoint); | |
7301 | } | |
7302 | delete_breakpoint (b); | |
7303 | } | |
7304 | } | |
7305 | ||
1900040c MS |
7306 | void |
7307 | enable_overlay_breakpoints (void) | |
7308 | { | |
52f0bd74 | 7309 | struct breakpoint *b; |
1900040c MS |
7310 | |
7311 | ALL_BREAKPOINTS (b) | |
7312 | if (b->type == bp_overlay_event) | |
7313 | { | |
7314 | b->enable_state = bp_enabled; | |
44702360 | 7315 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7316 | overlay_events_enabled = 1; |
1900040c MS |
7317 | } |
7318 | } | |
7319 | ||
7320 | void | |
7321 | disable_overlay_breakpoints (void) | |
7322 | { | |
52f0bd74 | 7323 | struct breakpoint *b; |
1900040c MS |
7324 | |
7325 | ALL_BREAKPOINTS (b) | |
7326 | if (b->type == bp_overlay_event) | |
7327 | { | |
7328 | b->enable_state = bp_disabled; | |
44702360 | 7329 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7330 | overlay_events_enabled = 0; |
1900040c MS |
7331 | } |
7332 | } | |
7333 | ||
aa7d318d TT |
7334 | /* Set an active std::terminate breakpoint for each std::terminate |
7335 | master breakpoint. */ | |
7336 | void | |
7337 | set_std_terminate_breakpoint (void) | |
7338 | { | |
35df4500 | 7339 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7340 | |
35df4500 | 7341 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7342 | if (b->pspace == current_program_space |
7343 | && b->type == bp_std_terminate_master) | |
7344 | { | |
06edf0c0 | 7345 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7346 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7347 | } |
7348 | } | |
7349 | ||
7350 | /* Delete all the std::terminate breakpoints. */ | |
7351 | void | |
7352 | delete_std_terminate_breakpoint (void) | |
7353 | { | |
35df4500 | 7354 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7355 | |
35df4500 | 7356 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7357 | if (b->type == bp_std_terminate) |
7358 | delete_breakpoint (b); | |
7359 | } | |
7360 | ||
c4093a6a | 7361 | struct breakpoint * |
a6d9a66e | 7362 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7363 | { |
7364 | struct breakpoint *b; | |
c4093a6a | 7365 | |
06edf0c0 PA |
7366 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7367 | &internal_breakpoint_ops); | |
7368 | ||
b5de0fa7 | 7369 | b->enable_state = bp_enabled; |
f00aae0f | 7370 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7371 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7372 | |
44702360 | 7373 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7374 | |
c4093a6a JM |
7375 | return b; |
7376 | } | |
7377 | ||
0101ce28 JJ |
7378 | struct lang_and_radix |
7379 | { | |
7380 | enum language lang; | |
7381 | int radix; | |
7382 | }; | |
7383 | ||
4efc6507 DE |
7384 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7385 | ||
7386 | struct breakpoint * | |
7387 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7388 | { | |
2a7f3dff PA |
7389 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7390 | &internal_breakpoint_ops); | |
4efc6507 | 7391 | } |
0101ce28 | 7392 | |
03673fc7 PP |
7393 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7394 | ||
7395 | void | |
7396 | remove_jit_event_breakpoints (void) | |
7397 | { | |
7398 | struct breakpoint *b, *b_tmp; | |
7399 | ||
7400 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7401 | if (b->type == bp_jit_event | |
7402 | && b->loc->pspace == current_program_space) | |
7403 | delete_breakpoint (b); | |
7404 | } | |
7405 | ||
cae688ec JJ |
7406 | void |
7407 | remove_solib_event_breakpoints (void) | |
7408 | { | |
35df4500 | 7409 | struct breakpoint *b, *b_tmp; |
cae688ec | 7410 | |
35df4500 | 7411 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7412 | if (b->type == bp_shlib_event |
7413 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7414 | delete_breakpoint (b); |
7415 | } | |
7416 | ||
f37f681c PA |
7417 | /* See breakpoint.h. */ |
7418 | ||
7419 | void | |
7420 | remove_solib_event_breakpoints_at_next_stop (void) | |
7421 | { | |
7422 | struct breakpoint *b, *b_tmp; | |
7423 | ||
7424 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7425 | if (b->type == bp_shlib_event | |
7426 | && b->loc->pspace == current_program_space) | |
7427 | b->disposition = disp_del_at_next_stop; | |
7428 | } | |
7429 | ||
04086b45 PA |
7430 | /* Helper for create_solib_event_breakpoint / |
7431 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7432 | INSERT_MODE to pass through to update_global_location_list. */ | |
7433 | ||
7434 | static struct breakpoint * | |
7435 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7436 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7437 | { |
7438 | struct breakpoint *b; | |
7439 | ||
06edf0c0 PA |
7440 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7441 | &internal_breakpoint_ops); | |
04086b45 | 7442 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7443 | return b; |
7444 | } | |
7445 | ||
04086b45 PA |
7446 | struct breakpoint * |
7447 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7448 | { | |
7449 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7450 | } | |
7451 | ||
f37f681c PA |
7452 | /* See breakpoint.h. */ |
7453 | ||
7454 | struct breakpoint * | |
7455 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7456 | { | |
7457 | struct breakpoint *b; | |
7458 | ||
04086b45 PA |
7459 | /* Explicitly tell update_global_location_list to insert |
7460 | locations. */ | |
7461 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7462 | if (!b->loc->inserted) |
7463 | { | |
7464 | delete_breakpoint (b); | |
7465 | return NULL; | |
7466 | } | |
7467 | return b; | |
7468 | } | |
7469 | ||
cae688ec JJ |
7470 | /* Disable any breakpoints that are on code in shared libraries. Only |
7471 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7472 | ||
7473 | void | |
cb851954 | 7474 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7475 | { |
876fa593 | 7476 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7477 | |
876fa593 | 7478 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7479 | { |
2bdf28a0 | 7480 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7481 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7482 | |
4a64f543 MS |
7483 | /* We apply the check to all breakpoints, including disabled for |
7484 | those with loc->duplicate set. This is so that when breakpoint | |
7485 | becomes enabled, or the duplicate is removed, gdb will try to | |
7486 | insert all breakpoints. If we don't set shlib_disabled here, | |
7487 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7488 | if (((b->type == bp_breakpoint) |
508ccb1f | 7489 | || (b->type == bp_jit_event) |
1042e4c0 | 7490 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7491 | || (is_tracepoint (b))) |
6c95b8df | 7492 | && loc->pspace == current_program_space |
0d381245 | 7493 | && !loc->shlib_disabled |
6c95b8df | 7494 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7495 | ) |
0d381245 VP |
7496 | { |
7497 | loc->shlib_disabled = 1; | |
7498 | } | |
cae688ec JJ |
7499 | } |
7500 | } | |
7501 | ||
63644780 NB |
7502 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7503 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7504 | disabled ones can just stay disabled. */ | |
84acb35a | 7505 | |
75149521 | 7506 | static void |
84acb35a JJ |
7507 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7508 | { | |
876fa593 | 7509 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7510 | int disabled_shlib_breaks = 0; |
7511 | ||
876fa593 | 7512 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7513 | { |
2bdf28a0 | 7514 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7515 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7516 | |
1e4d1764 | 7517 | if (solib->pspace == loc->pspace |
e2dd7057 | 7518 | && !loc->shlib_disabled |
1e4d1764 YQ |
7519 | && (((b->type == bp_breakpoint |
7520 | || b->type == bp_jit_event | |
7521 | || b->type == bp_hardware_breakpoint) | |
7522 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7523 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7524 | || is_tracepoint (b)) | |
e2dd7057 | 7525 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7526 | { |
e2dd7057 PP |
7527 | loc->shlib_disabled = 1; |
7528 | /* At this point, we cannot rely on remove_breakpoint | |
7529 | succeeding so we must mark the breakpoint as not inserted | |
7530 | to prevent future errors occurring in remove_breakpoints. */ | |
7531 | loc->inserted = 0; | |
8d3788bd VP |
7532 | |
7533 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7534 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7535 | |
e2dd7057 PP |
7536 | if (!disabled_shlib_breaks) |
7537 | { | |
223ffa71 | 7538 | target_terminal::ours_for_output (); |
3e43a32a MS |
7539 | warning (_("Temporarily disabling breakpoints " |
7540 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7541 | solib->so_name); |
84acb35a | 7542 | } |
e2dd7057 | 7543 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7544 | } |
7545 | } | |
84acb35a JJ |
7546 | } |
7547 | ||
63644780 NB |
7548 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7549 | notification of free_objfile. Only apply to enabled breakpoints, | |
7550 | disabled ones can just stay disabled. */ | |
7551 | ||
7552 | static void | |
7553 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7554 | { | |
7555 | struct breakpoint *b; | |
7556 | ||
7557 | if (objfile == NULL) | |
7558 | return; | |
7559 | ||
d03de421 PA |
7560 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7561 | managed by the user with add-symbol-file/remove-symbol-file. | |
7562 | Similarly to how breakpoints in shared libraries are handled in | |
7563 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7564 | shlib_disabled so they end up uninserted on the next global |
7565 | location list update. Shared libraries not loaded by the user | |
7566 | aren't handled here -- they're already handled in | |
7567 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7568 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7569 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7570 | main objfile). */ | |
7571 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7572 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7573 | return; |
7574 | ||
7575 | ALL_BREAKPOINTS (b) | |
7576 | { | |
7577 | struct bp_location *loc; | |
7578 | int bp_modified = 0; | |
7579 | ||
7580 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7581 | continue; | |
7582 | ||
7583 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7584 | { | |
7585 | CORE_ADDR loc_addr = loc->address; | |
7586 | ||
7587 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7588 | && loc->loc_type != bp_loc_software_breakpoint) | |
7589 | continue; | |
7590 | ||
7591 | if (loc->shlib_disabled != 0) | |
7592 | continue; | |
7593 | ||
7594 | if (objfile->pspace != loc->pspace) | |
7595 | continue; | |
7596 | ||
7597 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7598 | && loc->loc_type != bp_loc_software_breakpoint) | |
7599 | continue; | |
7600 | ||
7601 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7602 | { | |
7603 | loc->shlib_disabled = 1; | |
08351840 PA |
7604 | /* At this point, we don't know whether the object was |
7605 | unmapped from the inferior or not, so leave the | |
7606 | inserted flag alone. We'll handle failure to | |
7607 | uninsert quietly, in case the object was indeed | |
7608 | unmapped. */ | |
63644780 NB |
7609 | |
7610 | mark_breakpoint_location_modified (loc); | |
7611 | ||
7612 | bp_modified = 1; | |
7613 | } | |
7614 | } | |
7615 | ||
7616 | if (bp_modified) | |
76727919 | 7617 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7618 | } |
7619 | } | |
7620 | ||
ce78b96d JB |
7621 | /* FORK & VFORK catchpoints. */ |
7622 | ||
e29a4733 | 7623 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7624 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7625 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7626 | |
c1fc2657 | 7627 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7628 | { |
e29a4733 PA |
7629 | /* Process id of a child process whose forking triggered this |
7630 | catchpoint. This field is only valid immediately after this | |
7631 | catchpoint has triggered. */ | |
7632 | ptid_t forked_inferior_pid; | |
7633 | }; | |
7634 | ||
4a64f543 MS |
7635 | /* Implement the "insert" breakpoint_ops method for fork |
7636 | catchpoints. */ | |
ce78b96d | 7637 | |
77b06cd7 TJB |
7638 | static int |
7639 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7640 | { |
e99b03dc | 7641 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7642 | } |
7643 | ||
4a64f543 MS |
7644 | /* Implement the "remove" breakpoint_ops method for fork |
7645 | catchpoints. */ | |
ce78b96d JB |
7646 | |
7647 | static int | |
73971819 | 7648 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7649 | { |
e99b03dc | 7650 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7651 | } |
7652 | ||
7653 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7654 | catchpoints. */ | |
7655 | ||
7656 | static int | |
f1310107 | 7657 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7658 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7659 | const struct target_waitstatus *ws) |
ce78b96d | 7660 | { |
e29a4733 PA |
7661 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7662 | ||
f90263c1 TT |
7663 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7664 | return 0; | |
7665 | ||
7666 | c->forked_inferior_pid = ws->value.related_pid; | |
7667 | return 1; | |
ce78b96d JB |
7668 | } |
7669 | ||
4a64f543 MS |
7670 | /* Implement the "print_it" breakpoint_ops method for fork |
7671 | catchpoints. */ | |
ce78b96d JB |
7672 | |
7673 | static enum print_stop_action | |
348d480f | 7674 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7675 | { |
36dfb11c | 7676 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7677 | struct breakpoint *b = bs->breakpoint_at; |
7678 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7679 | |
ce78b96d | 7680 | annotate_catchpoint (b->number); |
f303dbd6 | 7681 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7682 | if (b->disposition == disp_del) |
112e8700 | 7683 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7684 | else |
112e8700 SM |
7685 | uiout->text ("Catchpoint "); |
7686 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7687 | { |
112e8700 SM |
7688 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7689 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7690 | } |
381befee | 7691 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7692 | uiout->text (" (forked process "); |
381befee | 7693 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7694 | uiout->text ("), "); |
ce78b96d JB |
7695 | return PRINT_SRC_AND_LOC; |
7696 | } | |
7697 | ||
4a64f543 MS |
7698 | /* Implement the "print_one" breakpoint_ops method for fork |
7699 | catchpoints. */ | |
ce78b96d JB |
7700 | |
7701 | static void | |
a6d9a66e | 7702 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7703 | { |
e29a4733 | 7704 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7705 | struct value_print_options opts; |
79a45e25 | 7706 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7707 | |
7708 | get_user_print_options (&opts); | |
7709 | ||
4a64f543 MS |
7710 | /* Field 4, the address, is omitted (which makes the columns not |
7711 | line up too nicely with the headers, but the effect is relatively | |
7712 | readable). */ | |
79a45b7d | 7713 | if (opts.addressprint) |
112e8700 | 7714 | uiout->field_skip ("addr"); |
ce78b96d | 7715 | annotate_field (5); |
112e8700 | 7716 | uiout->text ("fork"); |
d7e15655 | 7717 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7718 | { |
112e8700 | 7719 | uiout->text (", process "); |
381befee | 7720 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7721 | uiout->spaces (1); |
ce78b96d | 7722 | } |
8ac3646f | 7723 | |
112e8700 SM |
7724 | if (uiout->is_mi_like_p ()) |
7725 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7726 | } |
7727 | ||
7728 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7729 | catchpoints. */ | |
7730 | ||
7731 | static void | |
7732 | print_mention_catch_fork (struct breakpoint *b) | |
7733 | { | |
7734 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7735 | } | |
7736 | ||
6149aea9 PA |
7737 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7738 | catchpoints. */ | |
7739 | ||
7740 | static void | |
7741 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7742 | { | |
7743 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7744 | print_recreate_thread (b, fp); |
6149aea9 PA |
7745 | } |
7746 | ||
ce78b96d JB |
7747 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7748 | ||
2060206e | 7749 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7750 | |
4a64f543 MS |
7751 | /* Implement the "insert" breakpoint_ops method for vfork |
7752 | catchpoints. */ | |
ce78b96d | 7753 | |
77b06cd7 TJB |
7754 | static int |
7755 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7756 | { |
e99b03dc | 7757 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7758 | } |
7759 | ||
4a64f543 MS |
7760 | /* Implement the "remove" breakpoint_ops method for vfork |
7761 | catchpoints. */ | |
ce78b96d JB |
7762 | |
7763 | static int | |
73971819 | 7764 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7765 | { |
e99b03dc | 7766 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7767 | } |
7768 | ||
7769 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7770 | catchpoints. */ | |
7771 | ||
7772 | static int | |
f1310107 | 7773 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7774 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7775 | const struct target_waitstatus *ws) |
ce78b96d | 7776 | { |
e29a4733 PA |
7777 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7778 | ||
f90263c1 TT |
7779 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7780 | return 0; | |
7781 | ||
7782 | c->forked_inferior_pid = ws->value.related_pid; | |
7783 | return 1; | |
ce78b96d JB |
7784 | } |
7785 | ||
4a64f543 MS |
7786 | /* Implement the "print_it" breakpoint_ops method for vfork |
7787 | catchpoints. */ | |
ce78b96d JB |
7788 | |
7789 | static enum print_stop_action | |
348d480f | 7790 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7791 | { |
36dfb11c | 7792 | struct ui_out *uiout = current_uiout; |
348d480f | 7793 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7794 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7795 | ||
ce78b96d | 7796 | annotate_catchpoint (b->number); |
f303dbd6 | 7797 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7798 | if (b->disposition == disp_del) |
112e8700 | 7799 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7800 | else |
112e8700 SM |
7801 | uiout->text ("Catchpoint "); |
7802 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7803 | { |
112e8700 SM |
7804 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7805 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7806 | } |
381befee | 7807 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7808 | uiout->text (" (vforked process "); |
381befee | 7809 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7810 | uiout->text ("), "); |
ce78b96d JB |
7811 | return PRINT_SRC_AND_LOC; |
7812 | } | |
7813 | ||
4a64f543 MS |
7814 | /* Implement the "print_one" breakpoint_ops method for vfork |
7815 | catchpoints. */ | |
ce78b96d JB |
7816 | |
7817 | static void | |
a6d9a66e | 7818 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7819 | { |
e29a4733 | 7820 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7821 | struct value_print_options opts; |
79a45e25 | 7822 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7823 | |
7824 | get_user_print_options (&opts); | |
4a64f543 MS |
7825 | /* Field 4, the address, is omitted (which makes the columns not |
7826 | line up too nicely with the headers, but the effect is relatively | |
7827 | readable). */ | |
79a45b7d | 7828 | if (opts.addressprint) |
112e8700 | 7829 | uiout->field_skip ("addr"); |
ce78b96d | 7830 | annotate_field (5); |
112e8700 | 7831 | uiout->text ("vfork"); |
d7e15655 | 7832 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7833 | { |
112e8700 | 7834 | uiout->text (", process "); |
381befee | 7835 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7836 | uiout->spaces (1); |
ce78b96d | 7837 | } |
8ac3646f | 7838 | |
112e8700 SM |
7839 | if (uiout->is_mi_like_p ()) |
7840 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7841 | } |
7842 | ||
7843 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7844 | catchpoints. */ | |
7845 | ||
7846 | static void | |
7847 | print_mention_catch_vfork (struct breakpoint *b) | |
7848 | { | |
7849 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7850 | } | |
7851 | ||
6149aea9 PA |
7852 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7853 | catchpoints. */ | |
7854 | ||
7855 | static void | |
7856 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7857 | { | |
7858 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7859 | print_recreate_thread (b, fp); |
6149aea9 PA |
7860 | } |
7861 | ||
ce78b96d JB |
7862 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7863 | ||
2060206e | 7864 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7865 | |
edcc5120 | 7866 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7867 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7868 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7869 | ||
c1fc2657 | 7870 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7871 | { |
c1fc2657 | 7872 | ~solib_catchpoint () override; |
edcc5120 TT |
7873 | |
7874 | /* True for "catch load", false for "catch unload". */ | |
7875 | unsigned char is_load; | |
7876 | ||
7877 | /* Regular expression to match, if any. COMPILED is only valid when | |
7878 | REGEX is non-NULL. */ | |
7879 | char *regex; | |
2d7cc5c7 | 7880 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7881 | }; |
7882 | ||
c1fc2657 | 7883 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7884 | { |
c1fc2657 | 7885 | xfree (this->regex); |
edcc5120 TT |
7886 | } |
7887 | ||
7888 | static int | |
7889 | insert_catch_solib (struct bp_location *ignore) | |
7890 | { | |
7891 | return 0; | |
7892 | } | |
7893 | ||
7894 | static int | |
73971819 | 7895 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7896 | { |
7897 | return 0; | |
7898 | } | |
7899 | ||
7900 | static int | |
7901 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7902 | const address_space *aspace, |
edcc5120 TT |
7903 | CORE_ADDR bp_addr, |
7904 | const struct target_waitstatus *ws) | |
7905 | { | |
7906 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7907 | struct breakpoint *other; | |
7908 | ||
7909 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7910 | return 1; | |
7911 | ||
7912 | ALL_BREAKPOINTS (other) | |
7913 | { | |
7914 | struct bp_location *other_bl; | |
7915 | ||
7916 | if (other == bl->owner) | |
7917 | continue; | |
7918 | ||
7919 | if (other->type != bp_shlib_event) | |
7920 | continue; | |
7921 | ||
c1fc2657 | 7922 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7923 | continue; |
7924 | ||
7925 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7926 | { | |
7927 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7928 | return 1; | |
7929 | } | |
7930 | } | |
7931 | ||
7932 | return 0; | |
7933 | } | |
7934 | ||
7935 | static void | |
7936 | check_status_catch_solib (struct bpstats *bs) | |
7937 | { | |
7938 | struct solib_catchpoint *self | |
7939 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7940 | |
7941 | if (self->is_load) | |
7942 | { | |
52941706 | 7943 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7944 | { |
7945 | if (!self->regex | |
2d7cc5c7 | 7946 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7947 | return; |
7948 | } | |
7949 | } | |
7950 | else | |
7951 | { | |
6fb16ce6 | 7952 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7953 | { |
7954 | if (!self->regex | |
6fb16ce6 | 7955 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7956 | return; |
7957 | } | |
7958 | } | |
7959 | ||
7960 | bs->stop = 0; | |
7961 | bs->print_it = print_it_noop; | |
7962 | } | |
7963 | ||
7964 | static enum print_stop_action | |
7965 | print_it_catch_solib (bpstat bs) | |
7966 | { | |
7967 | struct breakpoint *b = bs->breakpoint_at; | |
7968 | struct ui_out *uiout = current_uiout; | |
7969 | ||
7970 | annotate_catchpoint (b->number); | |
f303dbd6 | 7971 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 7972 | if (b->disposition == disp_del) |
112e8700 | 7973 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 7974 | else |
112e8700 | 7975 | uiout->text ("Catchpoint "); |
381befee | 7976 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
7977 | uiout->text ("\n"); |
7978 | if (uiout->is_mi_like_p ()) | |
7979 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
7980 | print_solib_event (1); |
7981 | return PRINT_SRC_AND_LOC; | |
7982 | } | |
7983 | ||
7984 | static void | |
7985 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7986 | { | |
7987 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7988 | struct value_print_options opts; | |
7989 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
7990 | |
7991 | get_user_print_options (&opts); | |
7992 | /* Field 4, the address, is omitted (which makes the columns not | |
7993 | line up too nicely with the headers, but the effect is relatively | |
7994 | readable). */ | |
7995 | if (opts.addressprint) | |
7996 | { | |
7997 | annotate_field (4); | |
112e8700 | 7998 | uiout->field_skip ("addr"); |
edcc5120 TT |
7999 | } |
8000 | ||
528e1572 | 8001 | std::string msg; |
edcc5120 TT |
8002 | annotate_field (5); |
8003 | if (self->is_load) | |
8004 | { | |
8005 | if (self->regex) | |
528e1572 | 8006 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8007 | else |
528e1572 | 8008 | msg = _("load of library"); |
edcc5120 TT |
8009 | } |
8010 | else | |
8011 | { | |
8012 | if (self->regex) | |
528e1572 | 8013 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8014 | else |
528e1572 | 8015 | msg = _("unload of library"); |
edcc5120 | 8016 | } |
112e8700 | 8017 | uiout->field_string ("what", msg); |
8ac3646f | 8018 | |
112e8700 SM |
8019 | if (uiout->is_mi_like_p ()) |
8020 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8021 | } |
8022 | ||
8023 | static void | |
8024 | print_mention_catch_solib (struct breakpoint *b) | |
8025 | { | |
8026 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8027 | ||
8028 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8029 | self->is_load ? "load" : "unload"); | |
8030 | } | |
8031 | ||
8032 | static void | |
8033 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8034 | { | |
8035 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8036 | ||
8037 | fprintf_unfiltered (fp, "%s %s", | |
8038 | b->disposition == disp_del ? "tcatch" : "catch", | |
8039 | self->is_load ? "load" : "unload"); | |
8040 | if (self->regex) | |
8041 | fprintf_unfiltered (fp, " %s", self->regex); | |
8042 | fprintf_unfiltered (fp, "\n"); | |
8043 | } | |
8044 | ||
8045 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8046 | ||
91985142 MG |
8047 | /* Shared helper function (MI and CLI) for creating and installing |
8048 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8049 | the events to be caught are load events, otherwise they are | |
8050 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8051 | temporary one. If ENABLED is non-zero the catchpoint is | |
8052 | created in an enabled state. */ | |
edcc5120 | 8053 | |
91985142 | 8054 | void |
a121b7c1 | 8055 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8056 | { |
edcc5120 | 8057 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8058 | |
edcc5120 TT |
8059 | if (!arg) |
8060 | arg = ""; | |
f1735a53 | 8061 | arg = skip_spaces (arg); |
edcc5120 | 8062 | |
36bd8eaa | 8063 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8064 | |
8065 | if (*arg != '\0') | |
8066 | { | |
2d7cc5c7 PA |
8067 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8068 | _("Invalid regexp"))); | |
edcc5120 TT |
8069 | c->regex = xstrdup (arg); |
8070 | } | |
8071 | ||
8072 | c->is_load = is_load; | |
36bd8eaa | 8073 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8074 | &catch_solib_breakpoint_ops); |
8075 | ||
c1fc2657 | 8076 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8077 | |
b270e6f9 | 8078 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8079 | } |
8080 | ||
91985142 MG |
8081 | /* A helper function that does all the work for "catch load" and |
8082 | "catch unload". */ | |
8083 | ||
8084 | static void | |
eb4c3f4a | 8085 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8086 | struct cmd_list_element *command) |
8087 | { | |
8088 | int tempflag; | |
8089 | const int enabled = 1; | |
8090 | ||
8091 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8092 | ||
8093 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8094 | } | |
8095 | ||
edcc5120 | 8096 | static void |
eb4c3f4a | 8097 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8098 | struct cmd_list_element *command) |
8099 | { | |
8100 | catch_load_or_unload (arg, from_tty, 1, command); | |
8101 | } | |
8102 | ||
8103 | static void | |
eb4c3f4a | 8104 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8105 | struct cmd_list_element *command) |
8106 | { | |
8107 | catch_load_or_unload (arg, from_tty, 0, command); | |
8108 | } | |
8109 | ||
346774a9 PA |
8110 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8111 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8112 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8113 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8114 | |
ab04a2af | 8115 | void |
346774a9 PA |
8116 | init_catchpoint (struct breakpoint *b, |
8117 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8118 | const char *cond_string, |
c0a91b2b | 8119 | const struct breakpoint_ops *ops) |
c906108c | 8120 | { |
51abb421 | 8121 | symtab_and_line sal; |
6c95b8df | 8122 | sal.pspace = current_program_space; |
c5aa993b | 8123 | |
28010a5d | 8124 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8125 | |
1b36a34b | 8126 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8127 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8128 | } |
8129 | ||
28010a5d | 8130 | void |
b270e6f9 | 8131 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8132 | { |
b270e6f9 | 8133 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8134 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8135 | if (is_tracepoint (b)) |
8136 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8137 | if (!internal) |
8138 | mention (b); | |
76727919 | 8139 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8140 | |
8141 | if (update_gll) | |
44702360 | 8142 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8143 | } |
8144 | ||
9b70b993 | 8145 | static void |
a6d9a66e | 8146 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8147 | int tempflag, const char *cond_string, |
c0a91b2b | 8148 | const struct breakpoint_ops *ops) |
c906108c | 8149 | { |
b270e6f9 | 8150 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8151 | |
b270e6f9 | 8152 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8153 | |
8154 | c->forked_inferior_pid = null_ptid; | |
8155 | ||
b270e6f9 | 8156 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8157 | } |
8158 | ||
fe798b75 JB |
8159 | /* Exec catchpoints. */ |
8160 | ||
b4d90040 | 8161 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8162 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8163 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8164 | ||
c1fc2657 | 8165 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8166 | { |
c1fc2657 | 8167 | ~exec_catchpoint () override; |
b4d90040 PA |
8168 | |
8169 | /* Filename of a program whose exec triggered this catchpoint. | |
8170 | This field is only valid immediately after this catchpoint has | |
8171 | triggered. */ | |
8172 | char *exec_pathname; | |
8173 | }; | |
8174 | ||
c1fc2657 | 8175 | /* Exec catchpoint destructor. */ |
b4d90040 | 8176 | |
c1fc2657 | 8177 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8178 | { |
c1fc2657 | 8179 | xfree (this->exec_pathname); |
b4d90040 PA |
8180 | } |
8181 | ||
77b06cd7 TJB |
8182 | static int |
8183 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8184 | { |
e99b03dc | 8185 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8186 | } |
c906108c | 8187 | |
fe798b75 | 8188 | static int |
73971819 | 8189 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8190 | { |
e99b03dc | 8191 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8192 | } |
c906108c | 8193 | |
fe798b75 | 8194 | static int |
f1310107 | 8195 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8196 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8197 | const struct target_waitstatus *ws) |
fe798b75 | 8198 | { |
b4d90040 PA |
8199 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8200 | ||
f90263c1 TT |
8201 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8202 | return 0; | |
8203 | ||
8204 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8205 | return 1; | |
fe798b75 | 8206 | } |
c906108c | 8207 | |
fe798b75 | 8208 | static enum print_stop_action |
348d480f | 8209 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8210 | { |
36dfb11c | 8211 | struct ui_out *uiout = current_uiout; |
348d480f | 8212 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8213 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8214 | ||
fe798b75 | 8215 | annotate_catchpoint (b->number); |
f303dbd6 | 8216 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8217 | if (b->disposition == disp_del) |
112e8700 | 8218 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8219 | else |
112e8700 SM |
8220 | uiout->text ("Catchpoint "); |
8221 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8222 | { |
112e8700 SM |
8223 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8224 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8225 | } |
381befee | 8226 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8227 | uiout->text (" (exec'd "); |
8228 | uiout->field_string ("new-exec", c->exec_pathname); | |
8229 | uiout->text ("), "); | |
36dfb11c | 8230 | |
fe798b75 | 8231 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8232 | } |
8233 | ||
fe798b75 | 8234 | static void |
a6d9a66e | 8235 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8236 | { |
b4d90040 | 8237 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8238 | struct value_print_options opts; |
79a45e25 | 8239 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8240 | |
8241 | get_user_print_options (&opts); | |
8242 | ||
8243 | /* Field 4, the address, is omitted (which makes the columns | |
8244 | not line up too nicely with the headers, but the effect | |
8245 | is relatively readable). */ | |
8246 | if (opts.addressprint) | |
112e8700 | 8247 | uiout->field_skip ("addr"); |
fe798b75 | 8248 | annotate_field (5); |
112e8700 | 8249 | uiout->text ("exec"); |
b4d90040 | 8250 | if (c->exec_pathname != NULL) |
fe798b75 | 8251 | { |
112e8700 SM |
8252 | uiout->text (", program \""); |
8253 | uiout->field_string ("what", c->exec_pathname); | |
8254 | uiout->text ("\" "); | |
fe798b75 | 8255 | } |
8ac3646f | 8256 | |
112e8700 SM |
8257 | if (uiout->is_mi_like_p ()) |
8258 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8259 | } |
8260 | ||
8261 | static void | |
8262 | print_mention_catch_exec (struct breakpoint *b) | |
8263 | { | |
8264 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8265 | } | |
8266 | ||
6149aea9 PA |
8267 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8268 | catchpoints. */ | |
8269 | ||
8270 | static void | |
8271 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8272 | { | |
8273 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8274 | print_recreate_thread (b, fp); |
6149aea9 PA |
8275 | } |
8276 | ||
2060206e | 8277 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8278 | |
c906108c | 8279 | static int |
fba45db2 | 8280 | hw_breakpoint_used_count (void) |
c906108c | 8281 | { |
c906108c | 8282 | int i = 0; |
f1310107 TJB |
8283 | struct breakpoint *b; |
8284 | struct bp_location *bl; | |
c906108c SS |
8285 | |
8286 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8287 | { |
d6b74ac4 | 8288 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8289 | for (bl = b->loc; bl; bl = bl->next) |
8290 | { | |
8291 | /* Special types of hardware breakpoints may use more than | |
8292 | one register. */ | |
348d480f | 8293 | i += b->ops->resources_needed (bl); |
f1310107 | 8294 | } |
c5aa993b | 8295 | } |
c906108c SS |
8296 | |
8297 | return i; | |
8298 | } | |
8299 | ||
a1398e0c PA |
8300 | /* Returns the resources B would use if it were a hardware |
8301 | watchpoint. */ | |
8302 | ||
c906108c | 8303 | static int |
a1398e0c | 8304 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8305 | { |
c906108c | 8306 | int i = 0; |
e09342b5 | 8307 | struct bp_location *bl; |
c906108c | 8308 | |
a1398e0c PA |
8309 | if (!breakpoint_enabled (b)) |
8310 | return 0; | |
8311 | ||
8312 | for (bl = b->loc; bl; bl = bl->next) | |
8313 | { | |
8314 | /* Special types of hardware watchpoints may use more than | |
8315 | one register. */ | |
8316 | i += b->ops->resources_needed (bl); | |
8317 | } | |
8318 | ||
8319 | return i; | |
8320 | } | |
8321 | ||
8322 | /* Returns the sum the used resources of all hardware watchpoints of | |
8323 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8324 | the sum of the used resources of all hardware watchpoints of other | |
8325 | types _not_ TYPE. */ | |
8326 | ||
8327 | static int | |
8328 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8329 | enum bptype type, int *other_type_used) | |
8330 | { | |
8331 | int i = 0; | |
8332 | struct breakpoint *b; | |
8333 | ||
c906108c SS |
8334 | *other_type_used = 0; |
8335 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8336 | { |
a1398e0c PA |
8337 | if (b == except) |
8338 | continue; | |
e09342b5 TJB |
8339 | if (!breakpoint_enabled (b)) |
8340 | continue; | |
8341 | ||
a1398e0c PA |
8342 | if (b->type == type) |
8343 | i += hw_watchpoint_use_count (b); | |
8344 | else if (is_hardware_watchpoint (b)) | |
8345 | *other_type_used = 1; | |
e09342b5 TJB |
8346 | } |
8347 | ||
c906108c SS |
8348 | return i; |
8349 | } | |
8350 | ||
c906108c | 8351 | void |
fba45db2 | 8352 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8353 | { |
c5aa993b | 8354 | struct breakpoint *b; |
c906108c SS |
8355 | |
8356 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8357 | { |
cc60f2e3 | 8358 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8359 | { |
b5de0fa7 | 8360 | b->enable_state = bp_call_disabled; |
44702360 | 8361 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8362 | } |
8363 | } | |
c906108c SS |
8364 | } |
8365 | ||
8366 | void | |
fba45db2 | 8367 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8368 | { |
c5aa993b | 8369 | struct breakpoint *b; |
c906108c SS |
8370 | |
8371 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8372 | { |
cc60f2e3 | 8373 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8374 | { |
b5de0fa7 | 8375 | b->enable_state = bp_enabled; |
44702360 | 8376 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8377 | } |
8378 | } | |
c906108c SS |
8379 | } |
8380 | ||
8bea4e01 UW |
8381 | void |
8382 | disable_breakpoints_before_startup (void) | |
8383 | { | |
6c95b8df | 8384 | current_program_space->executing_startup = 1; |
44702360 | 8385 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8386 | } |
8387 | ||
8388 | void | |
8389 | enable_breakpoints_after_startup (void) | |
8390 | { | |
6c95b8df | 8391 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8392 | breakpoint_re_set (); |
8bea4e01 UW |
8393 | } |
8394 | ||
7c16b83e PA |
8395 | /* Create a new single-step breakpoint for thread THREAD, with no |
8396 | locations. */ | |
c906108c | 8397 | |
7c16b83e PA |
8398 | static struct breakpoint * |
8399 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8400 | { | |
b270e6f9 | 8401 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8402 | |
b270e6f9 | 8403 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8404 | &momentary_breakpoint_ops); |
8405 | ||
8406 | b->disposition = disp_donttouch; | |
8407 | b->frame_id = null_frame_id; | |
8408 | ||
8409 | b->thread = thread; | |
8410 | gdb_assert (b->thread != 0); | |
8411 | ||
b270e6f9 | 8412 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8413 | } |
8414 | ||
8415 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8416 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8417 | frame. */ | |
c906108c | 8418 | |
454dafbd | 8419 | breakpoint_up |
a6d9a66e UW |
8420 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8421 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8422 | { |
52f0bd74 | 8423 | struct breakpoint *b; |
edb3359d | 8424 | |
193facb3 JK |
8425 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8426 | tail-called one. */ | |
8427 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8428 | |
06edf0c0 | 8429 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8430 | b->enable_state = bp_enabled; |
8431 | b->disposition = disp_donttouch; | |
818dd999 | 8432 | b->frame_id = frame_id; |
c906108c | 8433 | |
00431a78 | 8434 | b->thread = inferior_thread ()->global_num; |
c906108c | 8435 | |
44702360 | 8436 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8437 | |
454dafbd | 8438 | return breakpoint_up (b); |
c906108c | 8439 | } |
611c83ae | 8440 | |
06edf0c0 | 8441 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8442 | The new breakpoint will have type TYPE, use OPS as its |
8443 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8444 | |
06edf0c0 PA |
8445 | static struct breakpoint * |
8446 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8447 | enum bptype type, | |
a1aa2221 LM |
8448 | const struct breakpoint_ops *ops, |
8449 | int loc_enabled) | |
e58b0e63 PA |
8450 | { |
8451 | struct breakpoint *copy; | |
8452 | ||
06edf0c0 | 8453 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8454 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8455 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8456 | |
a6d9a66e | 8457 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8458 | copy->loc->requested_address = orig->loc->requested_address; |
8459 | copy->loc->address = orig->loc->address; | |
8460 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8461 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8462 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8463 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8464 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8465 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8466 | copy->frame_id = orig->frame_id; |
8467 | copy->thread = orig->thread; | |
6c95b8df | 8468 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8469 | |
8470 | copy->enable_state = bp_enabled; | |
8471 | copy->disposition = disp_donttouch; | |
8472 | copy->number = internal_breakpoint_number--; | |
8473 | ||
44702360 | 8474 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8475 | return copy; |
8476 | } | |
8477 | ||
06edf0c0 PA |
8478 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8479 | ORIG is NULL. */ | |
8480 | ||
8481 | struct breakpoint * | |
8482 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8483 | { | |
8484 | /* If there's nothing to clone, then return nothing. */ | |
8485 | if (orig == NULL) | |
8486 | return NULL; | |
8487 | ||
a1aa2221 | 8488 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8489 | } |
8490 | ||
454dafbd | 8491 | breakpoint_up |
a6d9a66e UW |
8492 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8493 | enum bptype type) | |
611c83ae PA |
8494 | { |
8495 | struct symtab_and_line sal; | |
8496 | ||
8497 | sal = find_pc_line (pc, 0); | |
8498 | sal.pc = pc; | |
8499 | sal.section = find_pc_overlay (pc); | |
8500 | sal.explicit_pc = 1; | |
8501 | ||
a6d9a66e | 8502 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8503 | } |
c906108c | 8504 | \f |
c5aa993b | 8505 | |
c906108c SS |
8506 | /* Tell the user we have just set a breakpoint B. */ |
8507 | ||
8508 | static void | |
fba45db2 | 8509 | mention (struct breakpoint *b) |
c906108c | 8510 | { |
348d480f | 8511 | b->ops->print_mention (b); |
2d33446d | 8512 | current_uiout->text ("\n"); |
c906108c | 8513 | } |
c906108c | 8514 | \f |
c5aa993b | 8515 | |
5133a315 | 8516 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8517 | |
0d381245 | 8518 | static struct bp_location * |
39d61571 | 8519 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8520 | const struct symtab_and_line *sal) |
8521 | { | |
8522 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8523 | CORE_ADDR adjusted_address; |
8524 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8525 | ||
8526 | if (loc_gdbarch == NULL) | |
8527 | loc_gdbarch = b->gdbarch; | |
8528 | ||
8529 | /* Adjust the breakpoint's address prior to allocating a location. | |
8530 | Once we call allocate_bp_location(), that mostly uninitialized | |
8531 | location will be placed on the location chain. Adjustment of the | |
8532 | breakpoint may cause target_read_memory() to be called and we do | |
8533 | not want its scan of the location chain to find a breakpoint and | |
8534 | location that's only been partially initialized. */ | |
8535 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8536 | sal->pc, b->type); | |
0d381245 | 8537 | |
d30113d4 | 8538 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8539 | loc = allocate_bp_location (b); |
d30113d4 JK |
8540 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8541 | tmp = &((*tmp)->next)) | |
0d381245 | 8542 | ; |
d30113d4 | 8543 | loc->next = *tmp; |
0d381245 | 8544 | *tmp = loc; |
3742cc8b | 8545 | |
0d381245 | 8546 | loc->requested_address = sal->pc; |
3742cc8b | 8547 | loc->address = adjusted_address; |
6c95b8df | 8548 | loc->pspace = sal->pspace; |
935676c9 | 8549 | loc->probe.prob = sal->prob; |
729662a5 | 8550 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8551 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8552 | loc->section = sal->section; |
3742cc8b | 8553 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8554 | loc->line_number = sal->line; |
2f202fde | 8555 | loc->symtab = sal->symtab; |
4a27f119 | 8556 | loc->symbol = sal->symbol; |
3467ec66 PA |
8557 | loc->msymbol = sal->msymbol; |
8558 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8559 | |
0ba852ab | 8560 | set_breakpoint_location_function (loc); |
1a853c52 | 8561 | |
6ae88661 LM |
8562 | /* While by definition, permanent breakpoints are already present in the |
8563 | code, we don't mark the location as inserted. Normally one would expect | |
8564 | that GDB could rely on that breakpoint instruction to stop the program, | |
8565 | thus removing the need to insert its own breakpoint, except that executing | |
8566 | the breakpoint instruction can kill the target instead of reporting a | |
8567 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8568 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8569 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8570 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8571 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8572 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8573 | it manually increments the PC, thus avoiding executing the breakpoint | |
8574 | instruction.) */ | |
1a853c52 | 8575 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8576 | loc->permanent = 1; |
1a853c52 | 8577 | |
0d381245 VP |
8578 | return loc; |
8579 | } | |
514f746b AR |
8580 | \f |
8581 | ||
5133a315 LM |
8582 | /* Return true if LOC is pointing to a permanent breakpoint, |
8583 | return false otherwise. */ | |
1cf4d951 | 8584 | |
5133a315 | 8585 | static bool |
1cf4d951 PA |
8586 | bp_loc_is_permanent (struct bp_location *loc) |
8587 | { | |
514f746b AR |
8588 | gdb_assert (loc != NULL); |
8589 | ||
cb1e4e32 PA |
8590 | /* If we have a non-breakpoint-backed catchpoint or a software |
8591 | watchpoint, just return 0. We should not attempt to read from | |
8592 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8593 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8594 | memory. */ |
cb1e4e32 | 8595 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8596 | return false; |
244558af | 8597 | |
5ed8105e | 8598 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8599 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8600 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8601 | } |
8602 | ||
e7e0cddf SS |
8603 | /* Build a command list for the dprintf corresponding to the current |
8604 | settings of the dprintf style options. */ | |
8605 | ||
8606 | static void | |
8607 | update_dprintf_command_list (struct breakpoint *b) | |
8608 | { | |
8609 | char *dprintf_args = b->extra_string; | |
8610 | char *printf_line = NULL; | |
8611 | ||
8612 | if (!dprintf_args) | |
8613 | return; | |
8614 | ||
8615 | dprintf_args = skip_spaces (dprintf_args); | |
8616 | ||
8617 | /* Allow a comma, as it may have terminated a location, but don't | |
8618 | insist on it. */ | |
8619 | if (*dprintf_args == ',') | |
8620 | ++dprintf_args; | |
8621 | dprintf_args = skip_spaces (dprintf_args); | |
8622 | ||
8623 | if (*dprintf_args != '"') | |
8624 | error (_("Bad format string, missing '\"'.")); | |
8625 | ||
d3ce09f5 | 8626 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8627 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8628 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8629 | { |
8630 | if (!dprintf_function) | |
8631 | error (_("No function supplied for dprintf call")); | |
8632 | ||
8633 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8634 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8635 | dprintf_function, | |
8636 | dprintf_channel, | |
8637 | dprintf_args); | |
8638 | else | |
8639 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8640 | dprintf_function, | |
8641 | dprintf_args); | |
8642 | } | |
d3ce09f5 SS |
8643 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8644 | { | |
8645 | if (target_can_run_breakpoint_commands ()) | |
8646 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8647 | else | |
8648 | { | |
8649 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8650 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8651 | } | |
8652 | } | |
e7e0cddf SS |
8653 | else |
8654 | internal_error (__FILE__, __LINE__, | |
8655 | _("Invalid dprintf style.")); | |
8656 | ||
f28045c2 | 8657 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8658 | |
12973681 TT |
8659 | /* Manufacture a printf sequence. */ |
8660 | struct command_line *printf_cmd_line | |
8661 | = new struct command_line (simple_control, printf_line); | |
8662 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8663 | command_lines_deleter ())); | |
e7e0cddf SS |
8664 | } |
8665 | ||
8666 | /* Update all dprintf commands, making their command lists reflect | |
8667 | current style settings. */ | |
8668 | ||
8669 | static void | |
eb4c3f4a | 8670 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8671 | struct cmd_list_element *c) |
8672 | { | |
8673 | struct breakpoint *b; | |
8674 | ||
8675 | ALL_BREAKPOINTS (b) | |
8676 | { | |
8677 | if (b->type == bp_dprintf) | |
8678 | update_dprintf_command_list (b); | |
8679 | } | |
8680 | } | |
c3f6f71d | 8681 | |
f00aae0f KS |
8682 | /* Create a breakpoint with SAL as location. Use LOCATION |
8683 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8684 | as condition expression. If LOCATION is NULL then create an |
8685 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8686 | |
8687 | static void | |
d9b3f62e | 8688 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8689 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8690 | event_location_up &&location, |
e1e01040 PA |
8691 | gdb::unique_xmalloc_ptr<char> filter, |
8692 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8693 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8694 | enum bptype type, enum bpdisp disposition, |
8695 | int thread, int task, int ignore_count, | |
c0a91b2b | 8696 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8697 | int enabled, int internal, unsigned flags, |
8698 | int display_canonical) | |
018d34a4 | 8699 | { |
0d381245 | 8700 | int i; |
018d34a4 VP |
8701 | |
8702 | if (type == bp_hardware_breakpoint) | |
8703 | { | |
fbbd034e AS |
8704 | int target_resources_ok; |
8705 | ||
8706 | i = hw_breakpoint_used_count (); | |
8707 | target_resources_ok = | |
8708 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8709 | i + 1, 0); |
8710 | if (target_resources_ok == 0) | |
8711 | error (_("No hardware breakpoint support in the target.")); | |
8712 | else if (target_resources_ok < 0) | |
8713 | error (_("Hardware breakpoints used exceeds limit.")); | |
8714 | } | |
8715 | ||
6c5b2ebe | 8716 | gdb_assert (!sals.empty ()); |
6c95b8df | 8717 | |
6c5b2ebe | 8718 | for (const auto &sal : sals) |
0d381245 | 8719 | { |
0d381245 VP |
8720 | struct bp_location *loc; |
8721 | ||
8722 | if (from_tty) | |
5af949e3 UW |
8723 | { |
8724 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8725 | if (!loc_gdbarch) | |
8726 | loc_gdbarch = gdbarch; | |
8727 | ||
8728 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8729 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8730 | } |
0d381245 | 8731 | |
6c5b2ebe | 8732 | if (&sal == &sals[0]) |
0d381245 | 8733 | { |
d9b3f62e | 8734 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8735 | b->thread = thread; |
4a306c9a | 8736 | b->task = task; |
855a6e68 | 8737 | |
e1e01040 PA |
8738 | b->cond_string = cond_string.release (); |
8739 | b->extra_string = extra_string.release (); | |
0d381245 | 8740 | b->ignore_count = ignore_count; |
41447f92 | 8741 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8742 | b->disposition = disposition; |
6c95b8df | 8743 | |
44f238bb PA |
8744 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8745 | b->loc->inserted = 1; | |
8746 | ||
0fb4aa4b PA |
8747 | if (type == bp_static_tracepoint) |
8748 | { | |
d9b3f62e | 8749 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8750 | struct static_tracepoint_marker marker; |
8751 | ||
983af33b | 8752 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8753 | { |
8754 | /* We already know the marker exists, otherwise, we | |
8755 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8756 | const char *p |
8757 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8758 | const char *endp; |
0fb4aa4b | 8759 | |
f1735a53 | 8760 | p = skip_spaces (p); |
0fb4aa4b | 8761 | |
f1735a53 | 8762 | endp = skip_to_space (p); |
0fb4aa4b | 8763 | |
5d9310c4 | 8764 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8765 | |
3e43a32a MS |
8766 | printf_filtered (_("Probed static tracepoint " |
8767 | "marker \"%s\"\n"), | |
5d9310c4 | 8768 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8769 | } |
8770 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8771 | { | |
5d9310c4 | 8772 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8773 | |
3e43a32a MS |
8774 | printf_filtered (_("Probed static tracepoint " |
8775 | "marker \"%s\"\n"), | |
5d9310c4 | 8776 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8777 | } |
8778 | else | |
3e43a32a MS |
8779 | warning (_("Couldn't determine the static " |
8780 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8781 | } |
8782 | ||
0d381245 VP |
8783 | loc = b->loc; |
8784 | } | |
8785 | else | |
018d34a4 | 8786 | { |
39d61571 | 8787 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8788 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8789 | loc->inserted = 1; | |
0d381245 VP |
8790 | } |
8791 | ||
8792 | if (b->cond_string) | |
8793 | { | |
bbc13ae3 KS |
8794 | const char *arg = b->cond_string; |
8795 | ||
1bb9788d TT |
8796 | loc->cond = parse_exp_1 (&arg, loc->address, |
8797 | block_for_pc (loc->address), 0); | |
0d381245 | 8798 | if (*arg) |
588ae58c | 8799 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8800 | } |
e7e0cddf SS |
8801 | |
8802 | /* Dynamic printf requires and uses additional arguments on the | |
8803 | command line, otherwise it's an error. */ | |
8804 | if (type == bp_dprintf) | |
8805 | { | |
8806 | if (b->extra_string) | |
8807 | update_dprintf_command_list (b); | |
8808 | else | |
8809 | error (_("Format string required")); | |
8810 | } | |
8811 | else if (b->extra_string) | |
588ae58c | 8812 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8813 | } |
018d34a4 | 8814 | |
56435ebe | 8815 | b->display_canonical = display_canonical; |
f00aae0f | 8816 | if (location != NULL) |
d28cd78a | 8817 | b->location = std::move (location); |
018d34a4 | 8818 | else |
d28cd78a | 8819 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8820 | b->filter = std::move (filter); |
d9b3f62e | 8821 | } |
018d34a4 | 8822 | |
d9b3f62e PA |
8823 | static void |
8824 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8825 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8826 | event_location_up &&location, |
e1e01040 PA |
8827 | gdb::unique_xmalloc_ptr<char> filter, |
8828 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8829 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8830 | enum bptype type, enum bpdisp disposition, |
8831 | int thread, int task, int ignore_count, | |
c0a91b2b | 8832 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8833 | int enabled, int internal, unsigned flags, |
8834 | int display_canonical) | |
d9b3f62e | 8835 | { |
a5e364af | 8836 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8837 | |
a5e364af | 8838 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8839 | sals, std::move (location), |
e1e01040 PA |
8840 | std::move (filter), |
8841 | std::move (cond_string), | |
8842 | std::move (extra_string), | |
d9b3f62e PA |
8843 | type, disposition, |
8844 | thread, task, ignore_count, | |
8845 | ops, from_tty, | |
44f238bb PA |
8846 | enabled, internal, flags, |
8847 | display_canonical); | |
d9b3f62e | 8848 | |
b270e6f9 | 8849 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8850 | } |
8851 | ||
8852 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8853 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8854 | value. COND_STRING, if not NULL, specified the condition to be | |
8855 | used for all breakpoints. Essentially the only case where | |
8856 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8857 | function. In that case, it's still not possible to specify | |
8858 | separate conditions for different overloaded functions, so | |
8859 | we take just a single condition string. | |
8860 | ||
c3f6f71d | 8861 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8862 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8863 | array contents). If the function fails (error() is called), the |
8864 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8865 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8866 | |
8867 | static void | |
8cdf0e15 | 8868 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8869 | struct linespec_result *canonical, |
e1e01040 PA |
8870 | gdb::unique_xmalloc_ptr<char> cond_string, |
8871 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8872 | enum bptype type, enum bpdisp disposition, |
8873 | int thread, int task, int ignore_count, | |
c0a91b2b | 8874 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8875 | int enabled, int internal, unsigned flags) |
c906108c | 8876 | { |
f8eba3c6 | 8877 | if (canonical->pre_expanded) |
6c5b2ebe | 8878 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8879 | |
6c5b2ebe | 8880 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8881 | { |
f00aae0f | 8882 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8883 | 'break', without arguments. */ |
ffc2605c | 8884 | event_location_up location |
f00aae0f | 8885 | = (canonical->location != NULL |
8e9e35b1 | 8886 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8887 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8888 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8889 | |
6c5b2ebe | 8890 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8891 | std::move (location), |
e1e01040 PA |
8892 | std::move (filter_string), |
8893 | std::move (cond_string), | |
8894 | std::move (extra_string), | |
e7e0cddf | 8895 | type, disposition, |
84f4c1fe | 8896 | thread, task, ignore_count, ops, |
44f238bb | 8897 | from_tty, enabled, internal, flags, |
56435ebe | 8898 | canonical->special_display); |
c3f6f71d | 8899 | } |
c3f6f71d | 8900 | } |
c906108c | 8901 | |
f00aae0f | 8902 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8903 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8904 | addresses found. LOCATION points to the end of the SAL (for |
8905 | linespec locations). | |
9998af43 TJB |
8906 | |
8907 | The array and the line spec strings are allocated on the heap, it is | |
8908 | the caller's responsibility to free them. */ | |
c906108c | 8909 | |
b9362cc7 | 8910 | static void |
f00aae0f | 8911 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8912 | struct linespec_result *canonical) |
c3f6f71d | 8913 | { |
f00aae0f KS |
8914 | struct symtab_and_line cursal; |
8915 | ||
8916 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8917 | { | |
a20714ff | 8918 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8919 | |
a20714ff | 8920 | if (spec == NULL) |
f00aae0f KS |
8921 | { |
8922 | /* The last displayed codepoint, if it's valid, is our default | |
8923 | breakpoint address. */ | |
8924 | if (last_displayed_sal_is_valid ()) | |
8925 | { | |
f00aae0f KS |
8926 | /* Set sal's pspace, pc, symtab, and line to the values |
8927 | corresponding to the last call to print_frame_info. | |
8928 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8929 | as the breakpoint line number is inappropriate otherwise. | |
8930 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8931 | symtab_and_line sal = get_last_displayed_sal (); |
8932 | CORE_ADDR pc = sal.pc; | |
8933 | ||
f00aae0f KS |
8934 | sal = find_pc_line (pc, 0); |
8935 | ||
8936 | /* "break" without arguments is equivalent to "break *PC" | |
8937 | where PC is the last displayed codepoint's address. So | |
8938 | make sure to set sal.explicit_pc to prevent GDB from | |
8939 | trying to expand the list of sals to include all other | |
8940 | instances with the same symtab and line. */ | |
8941 | sal.pc = pc; | |
8942 | sal.explicit_pc = 1; | |
8943 | ||
6c5b2ebe PA |
8944 | struct linespec_sals lsal; |
8945 | lsal.sals = {sal}; | |
f00aae0f KS |
8946 | lsal.canonical = NULL; |
8947 | ||
6c5b2ebe | 8948 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8949 | return; |
8950 | } | |
8951 | else | |
8952 | error (_("No default breakpoint address now.")); | |
c906108c | 8953 | } |
c906108c | 8954 | } |
f00aae0f KS |
8955 | |
8956 | /* Force almost all breakpoints to be in terms of the | |
8957 | current_source_symtab (which is decode_line_1's default). | |
8958 | This should produce the results we want almost all of the | |
8959 | time while leaving default_breakpoint_* alone. | |
8960 | ||
8961 | ObjC: However, don't match an Objective-C method name which | |
8962 | may have a '+' or '-' succeeded by a '['. */ | |
8963 | cursal = get_current_source_symtab_and_line (); | |
8964 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8965 | { |
a20714ff | 8966 | const char *spec = NULL; |
cc80f267 | 8967 | |
f00aae0f | 8968 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 8969 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 8970 | |
f00aae0f | 8971 | if (!cursal.symtab |
a20714ff PA |
8972 | || (spec != NULL |
8973 | && strchr ("+-", spec[0]) != NULL | |
8974 | && spec[1] != '[')) | |
f00aae0f | 8975 | { |
c2f4122d | 8976 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8977 | get_last_displayed_symtab (), |
8978 | get_last_displayed_line (), | |
8979 | canonical, NULL, NULL); | |
8980 | return; | |
8981 | } | |
c906108c | 8982 | } |
f00aae0f | 8983 | |
c2f4122d | 8984 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8985 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8986 | } |
c906108c | 8987 | |
c906108c | 8988 | |
c3f6f71d | 8989 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8990 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8991 | |
b9362cc7 | 8992 | static void |
6c5b2ebe | 8993 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8994 | { |
6c5b2ebe PA |
8995 | for (auto &sal : sals) |
8996 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8997 | } |
8998 | ||
7a697b8d SS |
8999 | /* Fast tracepoints may have restrictions on valid locations. For |
9000 | instance, a fast tracepoint using a jump instead of a trap will | |
9001 | likely have to overwrite more bytes than a trap would, and so can | |
9002 | only be placed where the instruction is longer than the jump, or a | |
9003 | multi-instruction sequence does not have a jump into the middle of | |
9004 | it, etc. */ | |
9005 | ||
9006 | static void | |
9007 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9008 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9009 | { |
6c5b2ebe | 9010 | for (const auto &sal : sals) |
7a697b8d | 9011 | { |
f8eba3c6 TT |
9012 | struct gdbarch *sarch; |
9013 | ||
6c5b2ebe | 9014 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9015 | /* We fall back to GDBARCH if there is no architecture |
9016 | associated with SAL. */ | |
9017 | if (sarch == NULL) | |
9018 | sarch = gdbarch; | |
281d762b TT |
9019 | std::string msg; |
9020 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9021 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9022 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9023 | } |
9024 | } | |
9025 | ||
018d34a4 VP |
9026 | /* Given TOK, a string specification of condition and thread, as |
9027 | accepted by the 'break' command, extract the condition | |
9028 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9029 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9030 | If no condition is found, *COND_STRING is set to NULL. |
9031 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9032 | |
9033 | static void | |
bbc13ae3 | 9034 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9035 | char **cond_string, int *thread, int *task, |
9036 | char **rest) | |
018d34a4 VP |
9037 | { |
9038 | *cond_string = NULL; | |
9039 | *thread = -1; | |
ed1d1739 KS |
9040 | *task = 0; |
9041 | *rest = NULL; | |
9042 | ||
018d34a4 VP |
9043 | while (tok && *tok) |
9044 | { | |
bbc13ae3 | 9045 | const char *end_tok; |
018d34a4 | 9046 | int toklen; |
bbc13ae3 KS |
9047 | const char *cond_start = NULL; |
9048 | const char *cond_end = NULL; | |
cc59ec59 | 9049 | |
f1735a53 | 9050 | tok = skip_spaces (tok); |
e7e0cddf SS |
9051 | |
9052 | if ((*tok == '"' || *tok == ',') && rest) | |
9053 | { | |
9054 | *rest = savestring (tok, strlen (tok)); | |
9055 | return; | |
9056 | } | |
9057 | ||
f1735a53 | 9058 | end_tok = skip_to_space (tok); |
d634f2de | 9059 | |
018d34a4 | 9060 | toklen = end_tok - tok; |
d634f2de | 9061 | |
018d34a4 VP |
9062 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9063 | { | |
9064 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9065 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9066 | cond_end = tok; |
d634f2de | 9067 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9068 | } |
9069 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9070 | { | |
5d5658a1 PA |
9071 | const char *tmptok; |
9072 | struct thread_info *thr; | |
d634f2de | 9073 | |
018d34a4 | 9074 | tok = end_tok + 1; |
5d5658a1 | 9075 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9076 | if (tok == tmptok) |
9077 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9078 | *thread = thr->global_num; |
bbc13ae3 | 9079 | tok = tmptok; |
018d34a4 | 9080 | } |
4a306c9a JB |
9081 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9082 | { | |
9083 | char *tmptok; | |
9084 | ||
9085 | tok = end_tok + 1; | |
bbc13ae3 | 9086 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9087 | if (tok == tmptok) |
9088 | error (_("Junk after task keyword.")); | |
9089 | if (!valid_task_id (*task)) | |
b6199126 | 9090 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9091 | tok = tmptok; |
4a306c9a | 9092 | } |
e7e0cddf SS |
9093 | else if (rest) |
9094 | { | |
9095 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9096 | return; |
e7e0cddf | 9097 | } |
018d34a4 VP |
9098 | else |
9099 | error (_("Junk at end of arguments.")); | |
9100 | } | |
9101 | } | |
9102 | ||
0fb4aa4b PA |
9103 | /* Decode a static tracepoint marker spec. */ |
9104 | ||
6c5b2ebe | 9105 | static std::vector<symtab_and_line> |
f00aae0f | 9106 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9107 | { |
f00aae0f KS |
9108 | const char *p = &(*arg_p)[3]; |
9109 | const char *endp; | |
0fb4aa4b | 9110 | |
f1735a53 | 9111 | p = skip_spaces (p); |
0fb4aa4b | 9112 | |
f1735a53 | 9113 | endp = skip_to_space (p); |
0fb4aa4b | 9114 | |
81b1e71c | 9115 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9116 | |
5d9310c4 SM |
9117 | std::vector<static_tracepoint_marker> markers |
9118 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9119 | if (markers.empty ()) | |
81b1e71c TT |
9120 | error (_("No known static tracepoint marker named %s"), |
9121 | marker_str.c_str ()); | |
0fb4aa4b | 9122 | |
6c5b2ebe | 9123 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9124 | sals.reserve (markers.size ()); |
0fb4aa4b | 9125 | |
5d9310c4 | 9126 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9127 | { |
5d9310c4 SM |
9128 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9129 | sal.pc = marker.address; | |
6c5b2ebe | 9130 | sals.push_back (sal); |
5d9310c4 | 9131 | } |
0fb4aa4b | 9132 | |
0fb4aa4b PA |
9133 | *arg_p = endp; |
9134 | return sals; | |
9135 | } | |
9136 | ||
bac7c5cf GB |
9137 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9138 | according to IS_TRACEPOINT. */ | |
9139 | ||
9140 | static const struct breakpoint_ops * | |
9141 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9142 | bool is_tracepoint) | |
9143 | { | |
9144 | if (is_tracepoint) | |
9145 | { | |
9146 | if (location_type == PROBE_LOCATION) | |
9147 | return &tracepoint_probe_breakpoint_ops; | |
9148 | else | |
9149 | return &tracepoint_breakpoint_ops; | |
9150 | } | |
9151 | else | |
9152 | { | |
9153 | if (location_type == PROBE_LOCATION) | |
9154 | return &bkpt_probe_breakpoint_ops; | |
9155 | else | |
9156 | return &bkpt_breakpoint_ops; | |
9157 | } | |
9158 | } | |
9159 | ||
9160 | /* See breakpoint.h. */ | |
9161 | ||
9162 | const struct breakpoint_ops * | |
9163 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9164 | bool is_tracepoint) | |
9165 | { | |
9166 | if (location != nullptr) | |
9167 | return breakpoint_ops_for_event_location_type | |
9168 | (event_location_type (location), is_tracepoint); | |
9169 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9170 | } | |
9171 | ||
f00aae0f | 9172 | /* See breakpoint.h. */ |
0101ce28 | 9173 | |
8cdf0e15 VP |
9174 | int |
9175 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9176 | const struct event_location *location, |
9177 | const char *cond_string, | |
9178 | int thread, const char *extra_string, | |
f00aae0f | 9179 | int parse_extra, |
0fb4aa4b | 9180 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9181 | int ignore_count, |
9182 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9183 | const struct breakpoint_ops *ops, |
44f238bb PA |
9184 | int from_tty, int enabled, int internal, |
9185 | unsigned flags) | |
c3f6f71d | 9186 | { |
7efd8fc2 | 9187 | struct linespec_result canonical; |
0101ce28 | 9188 | int pending = 0; |
4a306c9a | 9189 | int task = 0; |
86b17b60 | 9190 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9191 | |
348d480f PA |
9192 | gdb_assert (ops != NULL); |
9193 | ||
f00aae0f KS |
9194 | /* If extra_string isn't useful, set it to NULL. */ |
9195 | if (extra_string != NULL && *extra_string == '\0') | |
9196 | extra_string = NULL; | |
9197 | ||
a70b8144 | 9198 | try |
b78a6381 | 9199 | { |
f00aae0f | 9200 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9201 | } |
230d2906 | 9202 | catch (const gdb_exception_error &e) |
0101ce28 | 9203 | { |
492d29ea PA |
9204 | /* If caller is interested in rc value from parse, set |
9205 | value. */ | |
9206 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9207 | { |
05ff989b AC |
9208 | /* If pending breakpoint support is turned off, throw |
9209 | error. */ | |
fa8d40ab JJ |
9210 | |
9211 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9212 | throw; |
723a2275 VP |
9213 | |
9214 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9215 | |
05ff989b AC |
9216 | /* If pending breakpoint support is auto query and the user |
9217 | selects no, then simply return the error code. */ | |
059fb39f | 9218 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9219 | && !nquery (_("Make %s pending on future shared library load? "), |
9220 | bptype_string (type_wanted))) | |
fd9b8c24 | 9221 | return 0; |
fa8d40ab | 9222 | |
05ff989b AC |
9223 | /* At this point, either the user was queried about setting |
9224 | a pending breakpoint and selected yes, or pending | |
9225 | breakpoint behavior is on and thus a pending breakpoint | |
9226 | is defaulted on behalf of the user. */ | |
f00aae0f | 9227 | pending = 1; |
0101ce28 | 9228 | } |
492d29ea | 9229 | else |
eedc3f4f | 9230 | throw; |
0101ce28 | 9231 | } |
492d29ea | 9232 | |
6c5b2ebe | 9233 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9234 | return 0; |
c3f6f71d | 9235 | |
c3f6f71d JM |
9236 | /* Resolve all line numbers to PC's and verify that the addresses |
9237 | are ok for the target. */ | |
0101ce28 | 9238 | if (!pending) |
f8eba3c6 | 9239 | { |
6c5b2ebe PA |
9240 | for (auto &lsal : canonical.lsals) |
9241 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9242 | } |
c3f6f71d | 9243 | |
7a697b8d | 9244 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9245 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9246 | { |
6c5b2ebe PA |
9247 | for (const auto &lsal : canonical.lsals) |
9248 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9249 | } |
7a697b8d | 9250 | |
c3f6f71d JM |
9251 | /* Verify that condition can be parsed, before setting any |
9252 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9253 | breakpoint. */ |
0101ce28 | 9254 | if (!pending) |
c3f6f71d | 9255 | { |
e1e01040 PA |
9256 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9257 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9258 | ||
f00aae0f | 9259 | if (parse_extra) |
72b2ff0e | 9260 | { |
0878d0fa | 9261 | char *rest; |
e1e01040 | 9262 | char *cond; |
52d361e1 | 9263 | |
6c5b2ebe | 9264 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9265 | |
0878d0fa YQ |
9266 | /* Here we only parse 'arg' to separate condition |
9267 | from thread number, so parsing in context of first | |
9268 | sal is OK. When setting the breakpoint we'll | |
9269 | re-parse it in context of each sal. */ | |
9270 | ||
6c5b2ebe | 9271 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9272 | &cond, &thread, &task, &rest); |
9273 | cond_string_copy.reset (cond); | |
9274 | extra_string_copy.reset (rest); | |
72b2ff0e | 9275 | } |
2f069f6f | 9276 | else |
72b2ff0e | 9277 | { |
f00aae0f KS |
9278 | if (type_wanted != bp_dprintf |
9279 | && extra_string != NULL && *extra_string != '\0') | |
9280 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9281 | |
9282 | /* Create a private copy of condition string. */ | |
9283 | if (cond_string) | |
e1e01040 | 9284 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9285 | /* Create a private copy of any extra string. */ |
9286 | if (extra_string) | |
e1e01040 | 9287 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9288 | } |
0fb4aa4b | 9289 | |
52d361e1 | 9290 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9291 | std::move (cond_string_copy), |
9292 | std::move (extra_string_copy), | |
9293 | type_wanted, | |
d9b3f62e PA |
9294 | tempflag ? disp_del : disp_donttouch, |
9295 | thread, task, ignore_count, ops, | |
44f238bb | 9296 | from_tty, enabled, internal, flags); |
c906108c | 9297 | } |
0101ce28 JJ |
9298 | else |
9299 | { | |
a5e364af | 9300 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9301 | |
a5e364af | 9302 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9303 | b->location = copy_event_location (location); |
bfccc43c | 9304 | |
f00aae0f KS |
9305 | if (parse_extra) |
9306 | b->cond_string = NULL; | |
e12c7713 MK |
9307 | else |
9308 | { | |
9309 | /* Create a private copy of condition string. */ | |
e1e01040 | 9310 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9311 | b->thread = thread; |
e12c7713 | 9312 | } |
f00aae0f KS |
9313 | |
9314 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9315 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9316 | b->ignore_count = ignore_count; |
0101ce28 | 9317 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9318 | b->condition_not_parsed = 1; |
41447f92 | 9319 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9320 | if ((type_wanted != bp_breakpoint |
9321 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9322 | b->pspace = current_program_space; |
8bea4e01 | 9323 | |
b270e6f9 | 9324 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9325 | } |
9326 | ||
6c5b2ebe | 9327 | if (canonical.lsals.size () > 1) |
95a42b64 | 9328 | { |
3e43a32a MS |
9329 | warning (_("Multiple breakpoints were set.\nUse the " |
9330 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9331 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9332 | } |
9333 | ||
44702360 | 9334 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9335 | |
9336 | return 1; | |
c3f6f71d | 9337 | } |
c906108c | 9338 | |
348d480f | 9339 | /* Set a breakpoint. |
72b2ff0e VP |
9340 | ARG is a string describing breakpoint address, |
9341 | condition, and thread. | |
9342 | FLAG specifies if a breakpoint is hardware on, | |
9343 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9344 | and BP_TEMPFLAG. */ | |
348d480f | 9345 | |
98deb0da | 9346 | static void |
f2fc3015 | 9347 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9348 | { |
72b2ff0e | 9349 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9350 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9351 | ? bp_hardware_breakpoint | |
9352 | : bp_breakpoint); | |
f00aae0f | 9353 | |
ffc2605c | 9354 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9355 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9356 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9357 | |
8cdf0e15 | 9358 | create_breakpoint (get_current_arch (), |
ffc2605c | 9359 | location.get (), |
f00aae0f | 9360 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9361 | tempflag, type_wanted, |
8cdf0e15 VP |
9362 | 0 /* Ignore count */, |
9363 | pending_break_support, | |
55aa24fb | 9364 | ops, |
8cdf0e15 | 9365 | from_tty, |
84f4c1fe | 9366 | 1 /* enabled */, |
44f238bb PA |
9367 | 0 /* internal */, |
9368 | 0); | |
c906108c SS |
9369 | } |
9370 | ||
c906108c SS |
9371 | /* Helper function for break_command_1 and disassemble_command. */ |
9372 | ||
9373 | void | |
fba45db2 | 9374 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9375 | { |
9376 | CORE_ADDR pc; | |
9377 | ||
9378 | if (sal->pc == 0 && sal->symtab != NULL) | |
9379 | { | |
9380 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9381 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9382 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9383 | sal->pc = pc; |
6a048695 | 9384 | |
4a64f543 MS |
9385 | /* If this SAL corresponds to a breakpoint inserted using a line |
9386 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9387 | if (sal->explicit_line) |
059acae7 | 9388 | skip_prologue_sal (sal); |
c906108c SS |
9389 | } |
9390 | ||
9391 | if (sal->section == 0 && sal->symtab != NULL) | |
9392 | { | |
346d1dfe | 9393 | const struct blockvector *bv; |
3977b71f | 9394 | const struct block *b; |
c5aa993b | 9395 | struct symbol *sym; |
c906108c | 9396 | |
43f3e411 DE |
9397 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9398 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9399 | if (bv != NULL) |
9400 | { | |
7f0df278 | 9401 | sym = block_linkage_function (b); |
c906108c SS |
9402 | if (sym != NULL) |
9403 | { | |
eb822aa6 DE |
9404 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9405 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9406 | sym); | |
c906108c SS |
9407 | } |
9408 | else | |
9409 | { | |
4a64f543 MS |
9410 | /* It really is worthwhile to have the section, so we'll |
9411 | just have to look harder. This case can be executed | |
9412 | if we have line numbers but no functions (as can | |
9413 | happen in assembly source). */ | |
c906108c | 9414 | |
5ed8105e | 9415 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9416 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9417 | |
5ed8105e | 9418 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9419 | if (msym.minsym) |
efd66ac6 | 9420 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9421 | } |
9422 | } | |
9423 | } | |
9424 | } | |
9425 | ||
9426 | void | |
0b39b52e | 9427 | break_command (const char *arg, int from_tty) |
c906108c | 9428 | { |
db107f19 | 9429 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9430 | } |
9431 | ||
c906108c | 9432 | void |
0b39b52e | 9433 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9434 | { |
db107f19 | 9435 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9436 | } |
9437 | ||
c906108c | 9438 | static void |
0b39b52e | 9439 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9440 | { |
db107f19 | 9441 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9442 | } |
9443 | ||
9444 | static void | |
0b39b52e | 9445 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9446 | { |
db107f19 | 9447 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9448 | } |
9449 | ||
9450 | static void | |
ee7ddd71 | 9451 | stop_command (const char *arg, int from_tty) |
c906108c | 9452 | { |
a3f17187 | 9453 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9454 | Usage: stop in <function | address>\n\ |
a3f17187 | 9455 | stop at <line>\n")); |
c906108c SS |
9456 | } |
9457 | ||
9458 | static void | |
4495129a | 9459 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9460 | { |
9461 | int badInput = 0; | |
9462 | ||
cafb3438 | 9463 | if (arg == NULL) |
c906108c SS |
9464 | badInput = 1; |
9465 | else if (*arg != '*') | |
9466 | { | |
4495129a | 9467 | const char *argptr = arg; |
c906108c SS |
9468 | int hasColon = 0; |
9469 | ||
4a64f543 | 9470 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9471 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9472 | function/method name. */ |
c906108c | 9473 | while (*argptr && !hasColon) |
c5aa993b JM |
9474 | { |
9475 | hasColon = (*argptr == ':'); | |
9476 | argptr++; | |
9477 | } | |
c906108c SS |
9478 | |
9479 | if (hasColon) | |
c5aa993b | 9480 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9481 | else |
c5aa993b | 9482 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9483 | } |
9484 | ||
9485 | if (badInput) | |
a3f17187 | 9486 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9487 | else |
db107f19 | 9488 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9489 | } |
9490 | ||
9491 | static void | |
4495129a | 9492 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9493 | { |
9494 | int badInput = 0; | |
9495 | ||
cafb3438 | 9496 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9497 | badInput = 1; |
9498 | else | |
9499 | { | |
4495129a | 9500 | const char *argptr = arg; |
c906108c SS |
9501 | int hasColon = 0; |
9502 | ||
4a64f543 MS |
9503 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9504 | it is probably a line number. */ | |
c906108c | 9505 | while (*argptr && !hasColon) |
c5aa993b JM |
9506 | { |
9507 | hasColon = (*argptr == ':'); | |
9508 | argptr++; | |
9509 | } | |
c906108c SS |
9510 | |
9511 | if (hasColon) | |
c5aa993b | 9512 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9513 | else |
c5aa993b | 9514 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9515 | } |
9516 | ||
9517 | if (badInput) | |
65e65158 | 9518 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9519 | else |
db107f19 | 9520 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9521 | } |
9522 | ||
e7e0cddf SS |
9523 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9524 | with a prewired command list consisting of a single output command, | |
9525 | built from extra arguments supplied on the dprintf command | |
9526 | line. */ | |
9527 | ||
da821c7b | 9528 | static void |
0b39b52e | 9529 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9530 | { |
ffc2605c | 9531 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9532 | |
9533 | /* If non-NULL, ARG should have been advanced past the location; | |
9534 | the next character must be ','. */ | |
9535 | if (arg != NULL) | |
9536 | { | |
9537 | if (arg[0] != ',' || arg[1] == '\0') | |
9538 | error (_("Format string required")); | |
9539 | else | |
9540 | { | |
9541 | /* Skip the comma. */ | |
9542 | ++arg; | |
9543 | } | |
9544 | } | |
9545 | ||
e7e0cddf | 9546 | create_breakpoint (get_current_arch (), |
ffc2605c | 9547 | location.get (), |
f00aae0f | 9548 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9549 | 0, bp_dprintf, |
9550 | 0 /* Ignore count */, | |
9551 | pending_break_support, | |
9552 | &dprintf_breakpoint_ops, | |
9553 | from_tty, | |
9554 | 1 /* enabled */, | |
9555 | 0 /* internal */, | |
9556 | 0); | |
9557 | } | |
9558 | ||
d3ce09f5 | 9559 | static void |
0b39b52e | 9560 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9561 | { |
9562 | error (_("May only run agent-printf on the target")); | |
9563 | } | |
9564 | ||
f1310107 TJB |
9565 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9566 | ranged breakpoints. */ | |
9567 | ||
9568 | static int | |
9569 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9570 | const address_space *aspace, |
09ac7c10 TT |
9571 | CORE_ADDR bp_addr, |
9572 | const struct target_waitstatus *ws) | |
f1310107 | 9573 | { |
09ac7c10 | 9574 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9575 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9576 | return 0; |
9577 | ||
f1310107 TJB |
9578 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9579 | bl->length, aspace, bp_addr); | |
9580 | } | |
9581 | ||
9582 | /* Implement the "resources_needed" breakpoint_ops method for | |
9583 | ranged breakpoints. */ | |
9584 | ||
9585 | static int | |
9586 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9587 | { | |
9588 | return target_ranged_break_num_registers (); | |
9589 | } | |
9590 | ||
9591 | /* Implement the "print_it" breakpoint_ops method for | |
9592 | ranged breakpoints. */ | |
9593 | ||
9594 | static enum print_stop_action | |
348d480f | 9595 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9596 | { |
348d480f | 9597 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9598 | struct bp_location *bl = b->loc; |
79a45e25 | 9599 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9600 | |
9601 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9602 | ||
9603 | /* Ranged breakpoints have only one location. */ | |
9604 | gdb_assert (bl && bl->next == NULL); | |
9605 | ||
9606 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9607 | |
9608 | maybe_print_thread_hit_breakpoint (uiout); | |
9609 | ||
f1310107 | 9610 | if (b->disposition == disp_del) |
112e8700 | 9611 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9612 | else |
112e8700 SM |
9613 | uiout->text ("Ranged breakpoint "); |
9614 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9615 | { |
112e8700 | 9616 | uiout->field_string ("reason", |
f1310107 | 9617 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9618 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9619 | } |
381befee | 9620 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9621 | uiout->text (", "); |
f1310107 TJB |
9622 | |
9623 | return PRINT_SRC_AND_LOC; | |
9624 | } | |
9625 | ||
9626 | /* Implement the "print_one" breakpoint_ops method for | |
9627 | ranged breakpoints. */ | |
9628 | ||
9629 | static void | |
9630 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9631 | struct bp_location **last_loc) | |
9632 | { | |
9633 | struct bp_location *bl = b->loc; | |
9634 | struct value_print_options opts; | |
79a45e25 | 9635 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9636 | |
9637 | /* Ranged breakpoints have only one location. */ | |
9638 | gdb_assert (bl && bl->next == NULL); | |
9639 | ||
9640 | get_user_print_options (&opts); | |
9641 | ||
9642 | if (opts.addressprint) | |
9643 | /* We don't print the address range here, it will be printed later | |
9644 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9645 | uiout->field_skip ("addr"); |
f1310107 TJB |
9646 | annotate_field (5); |
9647 | print_breakpoint_location (b, bl); | |
9648 | *last_loc = bl; | |
9649 | } | |
9650 | ||
9651 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9652 | ranged breakpoints. */ | |
9653 | ||
9654 | static void | |
9655 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9656 | struct ui_out *uiout) | |
9657 | { | |
9658 | CORE_ADDR address_start, address_end; | |
9659 | struct bp_location *bl = b->loc; | |
d7e74731 | 9660 | string_file stb; |
f1310107 TJB |
9661 | |
9662 | gdb_assert (bl); | |
9663 | ||
9664 | address_start = bl->address; | |
9665 | address_end = address_start + bl->length - 1; | |
9666 | ||
112e8700 | 9667 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9668 | stb.printf ("[%s, %s]", |
9669 | print_core_address (bl->gdbarch, address_start), | |
9670 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9671 | uiout->field_stream ("addr", stb); |
9672 | uiout->text ("\n"); | |
f1310107 TJB |
9673 | } |
9674 | ||
9675 | /* Implement the "print_mention" breakpoint_ops method for | |
9676 | ranged breakpoints. */ | |
9677 | ||
9678 | static void | |
9679 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9680 | { | |
9681 | struct bp_location *bl = b->loc; | |
79a45e25 | 9682 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9683 | |
9684 | gdb_assert (bl); | |
9685 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9686 | ||
2d33446d TT |
9687 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9688 | b->number, paddress (bl->gdbarch, bl->address), | |
9689 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9690 | } |
9691 | ||
9692 | /* Implement the "print_recreate" breakpoint_ops method for | |
9693 | ranged breakpoints. */ | |
9694 | ||
9695 | static void | |
9696 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9697 | { | |
f00aae0f | 9698 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9699 | event_location_to_string (b->location.get ()), |
9700 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9701 | print_recreate_thread (b, fp); |
f1310107 TJB |
9702 | } |
9703 | ||
9704 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9705 | ||
2060206e | 9706 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9707 | |
9708 | /* Find the address where the end of the breakpoint range should be | |
9709 | placed, given the SAL of the end of the range. This is so that if | |
9710 | the user provides a line number, the end of the range is set to the | |
9711 | last instruction of the given line. */ | |
9712 | ||
9713 | static CORE_ADDR | |
9714 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9715 | { | |
9716 | CORE_ADDR end; | |
9717 | ||
9718 | /* If the user provided a PC value, use it. Otherwise, | |
9719 | find the address of the end of the given location. */ | |
9720 | if (sal.explicit_pc) | |
9721 | end = sal.pc; | |
9722 | else | |
9723 | { | |
9724 | int ret; | |
9725 | CORE_ADDR start; | |
9726 | ||
9727 | ret = find_line_pc_range (sal, &start, &end); | |
9728 | if (!ret) | |
9729 | error (_("Could not find location of the end of the range.")); | |
9730 | ||
9731 | /* find_line_pc_range returns the start of the next line. */ | |
9732 | end--; | |
9733 | } | |
9734 | ||
9735 | return end; | |
9736 | } | |
9737 | ||
9738 | /* Implement the "break-range" CLI command. */ | |
9739 | ||
9740 | static void | |
0b39b52e | 9741 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9742 | { |
f2fc3015 | 9743 | const char *arg_start; |
f1310107 TJB |
9744 | struct linespec_result canonical_start, canonical_end; |
9745 | int bp_count, can_use_bp, length; | |
9746 | CORE_ADDR end; | |
9747 | struct breakpoint *b; | |
f1310107 TJB |
9748 | |
9749 | /* We don't support software ranged breakpoints. */ | |
9750 | if (target_ranged_break_num_registers () < 0) | |
9751 | error (_("This target does not support hardware ranged breakpoints.")); | |
9752 | ||
9753 | bp_count = hw_breakpoint_used_count (); | |
9754 | bp_count += target_ranged_break_num_registers (); | |
9755 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9756 | bp_count, 0); | |
9757 | if (can_use_bp < 0) | |
9758 | error (_("Hardware breakpoints used exceeds limit.")); | |
9759 | ||
f8eba3c6 | 9760 | arg = skip_spaces (arg); |
f1310107 TJB |
9761 | if (arg == NULL || arg[0] == '\0') |
9762 | error(_("No address range specified.")); | |
9763 | ||
f8eba3c6 | 9764 | arg_start = arg; |
ffc2605c TT |
9765 | event_location_up start_location = string_to_event_location (&arg, |
9766 | current_language); | |
9767 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9768 | |
9769 | if (arg[0] != ',') | |
9770 | error (_("Too few arguments.")); | |
6c5b2ebe | 9771 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9772 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9773 | |
6c5b2ebe | 9774 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9775 | |
6c5b2ebe PA |
9776 | if (canonical_start.lsals.size () > 1 |
9777 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9778 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9779 | ||
6c5b2ebe | 9780 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9781 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9782 | |
9783 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9784 | arg = skip_spaces (arg); |
f1310107 TJB |
9785 | |
9786 | /* Parse the end location. */ | |
9787 | ||
f1310107 TJB |
9788 | arg_start = arg; |
9789 | ||
f8eba3c6 | 9790 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9791 | parse_breakpoint_sals because we need to specify the start location's |
9792 | symtab and line as the default symtab and line for the end of the | |
9793 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9794 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9795 | event_location_up end_location = string_to_event_location (&arg, |
9796 | current_language); | |
9797 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9798 | sal_start.symtab, sal_start.line, |
9799 | &canonical_end, NULL, NULL); | |
9800 | ||
6c5b2ebe | 9801 | if (canonical_end.lsals.empty ()) |
f1310107 | 9802 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9803 | |
6c5b2ebe PA |
9804 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9805 | if (canonical_end.lsals.size () > 1 | |
9806 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9807 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9808 | ||
6c5b2ebe | 9809 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9810 | |
9811 | end = find_breakpoint_range_end (sal_end); | |
9812 | if (sal_start.pc > end) | |
177b42fe | 9813 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9814 | |
9815 | length = end - sal_start.pc + 1; | |
9816 | if (length < 0) | |
9817 | /* Length overflowed. */ | |
9818 | error (_("Address range too large.")); | |
9819 | else if (length == 1) | |
9820 | { | |
9821 | /* This range is simple enough to be handled by | |
9822 | the `hbreak' command. */ | |
81b1e71c | 9823 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9824 | |
9825 | return; | |
9826 | } | |
9827 | ||
9828 | /* Now set up the breakpoint. */ | |
9829 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9830 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9831 | set_breakpoint_count (breakpoint_count + 1); |
9832 | b->number = breakpoint_count; | |
9833 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9834 | b->location = std::move (start_location); |
9835 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9836 | b->loc->length = length; |
9837 | ||
f1310107 | 9838 | mention (b); |
76727919 | 9839 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9840 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9841 | } |
9842 | ||
4a64f543 MS |
9843 | /* Return non-zero if EXP is verified as constant. Returned zero |
9844 | means EXP is variable. Also the constant detection may fail for | |
9845 | some constant expressions and in such case still falsely return | |
9846 | zero. */ | |
2e6e3d9c | 9847 | |
65d79d4b SDJ |
9848 | static int |
9849 | watchpoint_exp_is_const (const struct expression *exp) | |
9850 | { | |
9851 | int i = exp->nelts; | |
9852 | ||
9853 | while (i > 0) | |
9854 | { | |
9855 | int oplenp, argsp; | |
9856 | ||
9857 | /* We are only interested in the descriptor of each element. */ | |
9858 | operator_length (exp, i, &oplenp, &argsp); | |
9859 | i -= oplenp; | |
9860 | ||
9861 | switch (exp->elts[i].opcode) | |
9862 | { | |
9863 | case BINOP_ADD: | |
9864 | case BINOP_SUB: | |
9865 | case BINOP_MUL: | |
9866 | case BINOP_DIV: | |
9867 | case BINOP_REM: | |
9868 | case BINOP_MOD: | |
9869 | case BINOP_LSH: | |
9870 | case BINOP_RSH: | |
9871 | case BINOP_LOGICAL_AND: | |
9872 | case BINOP_LOGICAL_OR: | |
9873 | case BINOP_BITWISE_AND: | |
9874 | case BINOP_BITWISE_IOR: | |
9875 | case BINOP_BITWISE_XOR: | |
9876 | case BINOP_EQUAL: | |
9877 | case BINOP_NOTEQUAL: | |
9878 | case BINOP_LESS: | |
9879 | case BINOP_GTR: | |
9880 | case BINOP_LEQ: | |
9881 | case BINOP_GEQ: | |
9882 | case BINOP_REPEAT: | |
9883 | case BINOP_COMMA: | |
9884 | case BINOP_EXP: | |
9885 | case BINOP_MIN: | |
9886 | case BINOP_MAX: | |
9887 | case BINOP_INTDIV: | |
9888 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9889 | case TERNOP_COND: |
9890 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9891 | |
9892 | case OP_LONG: | |
edd079d9 | 9893 | case OP_FLOAT: |
65d79d4b SDJ |
9894 | case OP_LAST: |
9895 | case OP_COMPLEX: | |
9896 | case OP_STRING: | |
65d79d4b SDJ |
9897 | case OP_ARRAY: |
9898 | case OP_TYPE: | |
608b4967 TT |
9899 | case OP_TYPEOF: |
9900 | case OP_DECLTYPE: | |
6e72ca20 | 9901 | case OP_TYPEID: |
65d79d4b SDJ |
9902 | case OP_NAME: |
9903 | case OP_OBJC_NSSTRING: | |
9904 | ||
9905 | case UNOP_NEG: | |
9906 | case UNOP_LOGICAL_NOT: | |
9907 | case UNOP_COMPLEMENT: | |
9908 | case UNOP_ADDR: | |
9909 | case UNOP_HIGH: | |
aeaa2474 | 9910 | case UNOP_CAST: |
9eaf6705 TT |
9911 | |
9912 | case UNOP_CAST_TYPE: | |
9913 | case UNOP_REINTERPRET_CAST: | |
9914 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9915 | /* Unary, binary and ternary operators: We have to check |
9916 | their operands. If they are constant, then so is the | |
9917 | result of that operation. For instance, if A and B are | |
9918 | determined to be constants, then so is "A + B". | |
9919 | ||
9920 | UNOP_IND is one exception to the rule above, because the | |
9921 | value of *ADDR is not necessarily a constant, even when | |
9922 | ADDR is. */ | |
65d79d4b SDJ |
9923 | break; |
9924 | ||
9925 | case OP_VAR_VALUE: | |
9926 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9927 | |
65d79d4b | 9928 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9929 | possible that a buggy compiler could mark a variable as |
9930 | constant even when it is not, and TYPE_CONST would return | |
9931 | true in this case, while SYMBOL_CLASS wouldn't. | |
9932 | ||
9933 | We also have to check for function symbols because they | |
9934 | are always constant. */ | |
65d79d4b SDJ |
9935 | { |
9936 | struct symbol *s = exp->elts[i + 2].symbol; | |
9937 | ||
9938 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9939 | && SYMBOL_CLASS (s) != LOC_CONST | |
9940 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9941 | return 0; | |
9942 | break; | |
9943 | } | |
9944 | ||
9945 | /* The default action is to return 0 because we are using | |
9946 | the optimistic approach here: If we don't know something, | |
9947 | then it is not a constant. */ | |
9948 | default: | |
9949 | return 0; | |
9950 | } | |
9951 | } | |
9952 | ||
9953 | return 1; | |
9954 | } | |
9955 | ||
c1fc2657 | 9956 | /* Watchpoint destructor. */ |
3a5c3e22 | 9957 | |
c1fc2657 | 9958 | watchpoint::~watchpoint () |
3a5c3e22 | 9959 | { |
c1fc2657 SM |
9960 | xfree (this->exp_string); |
9961 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
9962 | } |
9963 | ||
348d480f PA |
9964 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
9965 | ||
9966 | static void | |
9967 | re_set_watchpoint (struct breakpoint *b) | |
9968 | { | |
3a5c3e22 PA |
9969 | struct watchpoint *w = (struct watchpoint *) b; |
9970 | ||
348d480f PA |
9971 | /* Watchpoint can be either on expression using entirely global |
9972 | variables, or it can be on local variables. | |
9973 | ||
9974 | Watchpoints of the first kind are never auto-deleted, and even | |
9975 | persist across program restarts. Since they can use variables | |
9976 | from shared libraries, we need to reparse expression as libraries | |
9977 | are loaded and unloaded. | |
9978 | ||
9979 | Watchpoints on local variables can also change meaning as result | |
9980 | of solib event. For example, if a watchpoint uses both a local | |
9981 | and a global variables in expression, it's a local watchpoint, | |
9982 | but unloading of a shared library will make the expression | |
9983 | invalid. This is not a very common use case, but we still | |
9984 | re-evaluate expression, to avoid surprises to the user. | |
9985 | ||
9986 | Note that for local watchpoints, we re-evaluate it only if | |
9987 | watchpoints frame id is still valid. If it's not, it means the | |
9988 | watchpoint is out of scope and will be deleted soon. In fact, | |
9989 | I'm not sure we'll ever be called in this case. | |
9990 | ||
9991 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 9992 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9993 | |
3a5c3e22 PA |
9994 | Don't do anything about disabled watchpoints, since they will be |
9995 | reevaluated again when enabled. */ | |
9996 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
9997 | } |
9998 | ||
77b06cd7 TJB |
9999 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10000 | ||
10001 | static int | |
10002 | insert_watchpoint (struct bp_location *bl) | |
10003 | { | |
3a5c3e22 PA |
10004 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10005 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10006 | |
10007 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10008 | w->cond_exp.get ()); |
77b06cd7 TJB |
10009 | } |
10010 | ||
10011 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10012 | ||
10013 | static int | |
73971819 | 10014 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10015 | { |
3a5c3e22 PA |
10016 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10017 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10018 | |
10019 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10020 | w->cond_exp.get ()); |
e09342b5 TJB |
10021 | } |
10022 | ||
e09342b5 | 10023 | static int |
348d480f | 10024 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10025 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10026 | const struct target_waitstatus *ws) |
e09342b5 | 10027 | { |
348d480f | 10028 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10029 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10030 | |
348d480f PA |
10031 | /* Continuable hardware watchpoints are treated as non-existent if the |
10032 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10033 | some data address). Otherwise gdb won't stop on a break instruction | |
10034 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10035 | been defined. Also skip watchpoints which we know did not trigger | |
10036 | (did not match the data address). */ | |
10037 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10038 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10039 | return 0; |
9c06b0b4 | 10040 | |
348d480f | 10041 | return 1; |
9c06b0b4 TJB |
10042 | } |
10043 | ||
348d480f PA |
10044 | static void |
10045 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10046 | { |
348d480f | 10047 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10048 | |
348d480f | 10049 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10050 | } |
10051 | ||
10052 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10053 | hardware watchpoints. */ |
9c06b0b4 TJB |
10054 | |
10055 | static int | |
348d480f | 10056 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10057 | { |
3a5c3e22 PA |
10058 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10059 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10060 | |
10061 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10062 | } |
10063 | ||
10064 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10065 | hardware watchpoints. */ |
9c06b0b4 TJB |
10066 | |
10067 | static int | |
348d480f | 10068 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10069 | { |
efa80663 PA |
10070 | /* Read and access watchpoints only work with hardware support. */ |
10071 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10072 | } |
10073 | ||
9c06b0b4 | 10074 | static enum print_stop_action |
348d480f | 10075 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10076 | { |
348d480f | 10077 | struct breakpoint *b; |
348d480f | 10078 | enum print_stop_action result; |
3a5c3e22 | 10079 | struct watchpoint *w; |
79a45e25 | 10080 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10081 | |
10082 | gdb_assert (bs->bp_location_at != NULL); | |
10083 | ||
348d480f | 10084 | b = bs->breakpoint_at; |
3a5c3e22 | 10085 | w = (struct watchpoint *) b; |
348d480f | 10086 | |
f303dbd6 PA |
10087 | annotate_watchpoint (b->number); |
10088 | maybe_print_thread_hit_breakpoint (uiout); | |
10089 | ||
d7e74731 PA |
10090 | string_file stb; |
10091 | ||
76f9c9cf | 10092 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10093 | switch (b->type) |
10094 | { | |
348d480f | 10095 | case bp_watchpoint: |
9c06b0b4 | 10096 | case bp_hardware_watchpoint: |
112e8700 SM |
10097 | if (uiout->is_mi_like_p ()) |
10098 | uiout->field_string | |
10099 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10100 | mention (b); |
76f9c9cf | 10101 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10102 | uiout->text ("\nOld value = "); |
850645cf | 10103 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10104 | uiout->field_stream ("old", stb); |
10105 | uiout->text ("\nNew value = "); | |
850645cf | 10106 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10107 | uiout->field_stream ("new", stb); |
10108 | uiout->text ("\n"); | |
348d480f PA |
10109 | /* More than one watchpoint may have been triggered. */ |
10110 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10111 | break; |
10112 | ||
10113 | case bp_read_watchpoint: | |
112e8700 SM |
10114 | if (uiout->is_mi_like_p ()) |
10115 | uiout->field_string | |
10116 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10117 | mention (b); |
76f9c9cf | 10118 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10119 | uiout->text ("\nValue = "); |
850645cf | 10120 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10121 | uiout->field_stream ("value", stb); |
10122 | uiout->text ("\n"); | |
348d480f | 10123 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10124 | break; |
10125 | ||
10126 | case bp_access_watchpoint: | |
348d480f PA |
10127 | if (bs->old_val != NULL) |
10128 | { | |
112e8700 SM |
10129 | if (uiout->is_mi_like_p ()) |
10130 | uiout->field_string | |
10131 | ("reason", | |
348d480f PA |
10132 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10133 | mention (b); | |
76f9c9cf | 10134 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10135 | uiout->text ("\nOld value = "); |
850645cf | 10136 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10137 | uiout->field_stream ("old", stb); |
10138 | uiout->text ("\nNew value = "); | |
348d480f PA |
10139 | } |
10140 | else | |
10141 | { | |
10142 | mention (b); | |
112e8700 SM |
10143 | if (uiout->is_mi_like_p ()) |
10144 | uiout->field_string | |
10145 | ("reason", | |
348d480f | 10146 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10147 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10148 | uiout->text ("\nValue = "); |
348d480f | 10149 | } |
850645cf | 10150 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10151 | uiout->field_stream ("new", stb); |
10152 | uiout->text ("\n"); | |
348d480f | 10153 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10154 | break; |
10155 | default: | |
348d480f | 10156 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10157 | } |
10158 | ||
348d480f PA |
10159 | return result; |
10160 | } | |
10161 | ||
10162 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10163 | watchpoints. */ | |
10164 | ||
10165 | static void | |
10166 | print_mention_watchpoint (struct breakpoint *b) | |
10167 | { | |
3a5c3e22 | 10168 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10169 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10170 | const char *tuple_name; |
348d480f PA |
10171 | |
10172 | switch (b->type) | |
10173 | { | |
10174 | case bp_watchpoint: | |
112e8700 | 10175 | uiout->text ("Watchpoint "); |
46b9c129 | 10176 | tuple_name = "wpt"; |
348d480f PA |
10177 | break; |
10178 | case bp_hardware_watchpoint: | |
112e8700 | 10179 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10180 | tuple_name = "wpt"; |
348d480f PA |
10181 | break; |
10182 | case bp_read_watchpoint: | |
112e8700 | 10183 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10184 | tuple_name = "hw-rwpt"; |
348d480f PA |
10185 | break; |
10186 | case bp_access_watchpoint: | |
112e8700 | 10187 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10188 | tuple_name = "hw-awpt"; |
348d480f PA |
10189 | break; |
10190 | default: | |
10191 | internal_error (__FILE__, __LINE__, | |
10192 | _("Invalid hardware watchpoint type.")); | |
10193 | } | |
10194 | ||
46b9c129 | 10195 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10196 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10197 | uiout->text (": "); |
10198 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10199 | } |
10200 | ||
10201 | /* Implement the "print_recreate" breakpoint_ops method for | |
10202 | watchpoints. */ | |
10203 | ||
10204 | static void | |
10205 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10206 | { | |
3a5c3e22 PA |
10207 | struct watchpoint *w = (struct watchpoint *) b; |
10208 | ||
348d480f PA |
10209 | switch (b->type) |
10210 | { | |
10211 | case bp_watchpoint: | |
10212 | case bp_hardware_watchpoint: | |
10213 | fprintf_unfiltered (fp, "watch"); | |
10214 | break; | |
10215 | case bp_read_watchpoint: | |
10216 | fprintf_unfiltered (fp, "rwatch"); | |
10217 | break; | |
10218 | case bp_access_watchpoint: | |
10219 | fprintf_unfiltered (fp, "awatch"); | |
10220 | break; | |
10221 | default: | |
10222 | internal_error (__FILE__, __LINE__, | |
10223 | _("Invalid watchpoint type.")); | |
10224 | } | |
10225 | ||
3a5c3e22 | 10226 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10227 | print_recreate_thread (b, fp); |
348d480f PA |
10228 | } |
10229 | ||
427cd150 TT |
10230 | /* Implement the "explains_signal" breakpoint_ops method for |
10231 | watchpoints. */ | |
10232 | ||
47591c29 | 10233 | static int |
427cd150 TT |
10234 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10235 | { | |
10236 | /* A software watchpoint cannot cause a signal other than | |
10237 | GDB_SIGNAL_TRAP. */ | |
10238 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10239 | return 0; |
427cd150 | 10240 | |
47591c29 | 10241 | return 1; |
427cd150 TT |
10242 | } |
10243 | ||
348d480f PA |
10244 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10245 | ||
2060206e | 10246 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10247 | |
10248 | /* Implement the "insert" breakpoint_ops method for | |
10249 | masked hardware watchpoints. */ | |
10250 | ||
10251 | static int | |
10252 | insert_masked_watchpoint (struct bp_location *bl) | |
10253 | { | |
3a5c3e22 PA |
10254 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10255 | ||
10256 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10257 | bl->watchpoint_type); |
10258 | } | |
10259 | ||
10260 | /* Implement the "remove" breakpoint_ops method for | |
10261 | masked hardware watchpoints. */ | |
10262 | ||
10263 | static int | |
73971819 | 10264 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10265 | { |
3a5c3e22 PA |
10266 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10267 | ||
10268 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10269 | bl->watchpoint_type); |
10270 | } | |
10271 | ||
10272 | /* Implement the "resources_needed" breakpoint_ops method for | |
10273 | masked hardware watchpoints. */ | |
10274 | ||
10275 | static int | |
10276 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10277 | { | |
3a5c3e22 PA |
10278 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10279 | ||
10280 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10281 | } |
10282 | ||
10283 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10284 | masked hardware watchpoints. */ | |
10285 | ||
10286 | static int | |
10287 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10288 | { | |
10289 | return 0; | |
10290 | } | |
10291 | ||
10292 | /* Implement the "print_it" breakpoint_ops method for | |
10293 | masked hardware watchpoints. */ | |
10294 | ||
10295 | static enum print_stop_action | |
10296 | print_it_masked_watchpoint (bpstat bs) | |
10297 | { | |
10298 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10299 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10300 | |
10301 | /* Masked watchpoints have only one location. */ | |
10302 | gdb_assert (b->loc && b->loc->next == NULL); | |
10303 | ||
f303dbd6 PA |
10304 | annotate_watchpoint (b->number); |
10305 | maybe_print_thread_hit_breakpoint (uiout); | |
10306 | ||
348d480f PA |
10307 | switch (b->type) |
10308 | { | |
10309 | case bp_hardware_watchpoint: | |
112e8700 SM |
10310 | if (uiout->is_mi_like_p ()) |
10311 | uiout->field_string | |
10312 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10313 | break; |
10314 | ||
10315 | case bp_read_watchpoint: | |
112e8700 SM |
10316 | if (uiout->is_mi_like_p ()) |
10317 | uiout->field_string | |
10318 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10319 | break; |
10320 | ||
10321 | case bp_access_watchpoint: | |
112e8700 SM |
10322 | if (uiout->is_mi_like_p ()) |
10323 | uiout->field_string | |
10324 | ("reason", | |
348d480f PA |
10325 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10326 | break; | |
10327 | default: | |
10328 | internal_error (__FILE__, __LINE__, | |
10329 | _("Invalid hardware watchpoint type.")); | |
10330 | } | |
10331 | ||
10332 | mention (b); | |
112e8700 | 10333 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10334 | Check the underlying instruction at PC for the memory\n\ |
10335 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10336 | uiout->text ("\n"); |
9c06b0b4 TJB |
10337 | |
10338 | /* More than one watchpoint may have been triggered. */ | |
10339 | return PRINT_UNKNOWN; | |
10340 | } | |
10341 | ||
10342 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10343 | masked hardware watchpoints. */ | |
10344 | ||
10345 | static void | |
10346 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10347 | struct ui_out *uiout) | |
10348 | { | |
3a5c3e22 PA |
10349 | struct watchpoint *w = (struct watchpoint *) b; |
10350 | ||
9c06b0b4 TJB |
10351 | /* Masked watchpoints have only one location. */ |
10352 | gdb_assert (b->loc && b->loc->next == NULL); | |
10353 | ||
112e8700 SM |
10354 | uiout->text ("\tmask "); |
10355 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10356 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10357 | } |
10358 | ||
10359 | /* Implement the "print_mention" breakpoint_ops method for | |
10360 | masked hardware watchpoints. */ | |
10361 | ||
10362 | static void | |
10363 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10364 | { | |
3a5c3e22 | 10365 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10366 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10367 | const char *tuple_name; |
9c06b0b4 TJB |
10368 | |
10369 | switch (b->type) | |
10370 | { | |
10371 | case bp_hardware_watchpoint: | |
112e8700 | 10372 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10373 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10374 | break; |
10375 | case bp_read_watchpoint: | |
112e8700 | 10376 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10377 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10378 | break; |
10379 | case bp_access_watchpoint: | |
112e8700 | 10380 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10381 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10382 | break; |
10383 | default: | |
10384 | internal_error (__FILE__, __LINE__, | |
10385 | _("Invalid hardware watchpoint type.")); | |
10386 | } | |
10387 | ||
46b9c129 | 10388 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10389 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10390 | uiout->text (": "); |
10391 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10392 | } |
10393 | ||
10394 | /* Implement the "print_recreate" breakpoint_ops method for | |
10395 | masked hardware watchpoints. */ | |
10396 | ||
10397 | static void | |
10398 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10399 | { | |
3a5c3e22 | 10400 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10401 | |
10402 | switch (b->type) | |
10403 | { | |
10404 | case bp_hardware_watchpoint: | |
10405 | fprintf_unfiltered (fp, "watch"); | |
10406 | break; | |
10407 | case bp_read_watchpoint: | |
10408 | fprintf_unfiltered (fp, "rwatch"); | |
10409 | break; | |
10410 | case bp_access_watchpoint: | |
10411 | fprintf_unfiltered (fp, "awatch"); | |
10412 | break; | |
10413 | default: | |
10414 | internal_error (__FILE__, __LINE__, | |
10415 | _("Invalid hardware watchpoint type.")); | |
10416 | } | |
10417 | ||
53807e9f TT |
10418 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, |
10419 | phex (w->hw_wp_mask, sizeof (CORE_ADDR))); | |
d9b3f62e | 10420 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10421 | } |
10422 | ||
10423 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10424 | ||
2060206e | 10425 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10426 | |
10427 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10428 | ||
f2478a7e | 10429 | static bool |
9c06b0b4 TJB |
10430 | is_masked_watchpoint (const struct breakpoint *b) |
10431 | { | |
10432 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10433 | } | |
10434 | ||
53a5351d JM |
10435 | /* accessflag: hw_write: watch write, |
10436 | hw_read: watch read, | |
10437 | hw_access: watch access (read or write) */ | |
c906108c | 10438 | static void |
bbc13ae3 | 10439 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10440 | int just_location, int internal) |
c906108c | 10441 | { |
c1fc2657 | 10442 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10443 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10444 | struct value *result; |
bb9d5f81 | 10445 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10446 | const char *exp_start = NULL; |
10447 | const char *exp_end = NULL; | |
10448 | const char *tok, *end_tok; | |
9c06b0b4 | 10449 | int toklen = -1; |
bbc13ae3 KS |
10450 | const char *cond_start = NULL; |
10451 | const char *cond_end = NULL; | |
c906108c | 10452 | enum bptype bp_type; |
37e4754d | 10453 | int thread = -1; |
0cf6dd15 | 10454 | int pc = 0; |
9c06b0b4 TJB |
10455 | /* Flag to indicate whether we are going to use masks for |
10456 | the hardware watchpoint. */ | |
10457 | int use_mask = 0; | |
10458 | CORE_ADDR mask = 0; | |
c906108c | 10459 | |
37e4754d LM |
10460 | /* Make sure that we actually have parameters to parse. */ |
10461 | if (arg != NULL && arg[0] != '\0') | |
10462 | { | |
bbc13ae3 KS |
10463 | const char *value_start; |
10464 | ||
10465 | exp_end = arg + strlen (arg); | |
37e4754d | 10466 | |
9c06b0b4 TJB |
10467 | /* Look for "parameter value" pairs at the end |
10468 | of the arguments string. */ | |
bbc13ae3 | 10469 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10470 | { |
10471 | /* Skip whitespace at the end of the argument list. */ | |
10472 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10473 | tok--; | |
10474 | ||
10475 | /* Find the beginning of the last token. | |
10476 | This is the value of the parameter. */ | |
10477 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10478 | tok--; | |
10479 | value_start = tok + 1; | |
10480 | ||
10481 | /* Skip whitespace. */ | |
10482 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10483 | tok--; | |
10484 | ||
10485 | end_tok = tok; | |
10486 | ||
10487 | /* Find the beginning of the second to last token. | |
10488 | This is the parameter itself. */ | |
10489 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10490 | tok--; | |
10491 | tok++; | |
10492 | toklen = end_tok - tok + 1; | |
10493 | ||
61012eef | 10494 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10495 | { |
5d5658a1 | 10496 | struct thread_info *thr; |
9c06b0b4 TJB |
10497 | /* At this point we've found a "thread" token, which means |
10498 | the user is trying to set a watchpoint that triggers | |
10499 | only in a specific thread. */ | |
5d5658a1 | 10500 | const char *endp; |
37e4754d | 10501 | |
9c06b0b4 TJB |
10502 | if (thread != -1) |
10503 | error(_("You can specify only one thread.")); | |
37e4754d | 10504 | |
9c06b0b4 | 10505 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10506 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10507 | |
5d5658a1 | 10508 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10509 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10510 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10511 | |
5d5658a1 | 10512 | thread = thr->global_num; |
9c06b0b4 | 10513 | } |
61012eef | 10514 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10515 | { |
10516 | /* We've found a "mask" token, which means the user wants to | |
10517 | create a hardware watchpoint that is going to have the mask | |
10518 | facility. */ | |
10519 | struct value *mask_value, *mark; | |
37e4754d | 10520 | |
9c06b0b4 TJB |
10521 | if (use_mask) |
10522 | error(_("You can specify only one mask.")); | |
37e4754d | 10523 | |
9c06b0b4 | 10524 | use_mask = just_location = 1; |
37e4754d | 10525 | |
9c06b0b4 TJB |
10526 | mark = value_mark (); |
10527 | mask_value = parse_to_comma_and_eval (&value_start); | |
10528 | mask = value_as_address (mask_value); | |
10529 | value_free_to_mark (mark); | |
10530 | } | |
10531 | else | |
10532 | /* We didn't recognize what we found. We should stop here. */ | |
10533 | break; | |
37e4754d | 10534 | |
9c06b0b4 TJB |
10535 | /* Truncate the string and get rid of the "parameter value" pair before |
10536 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10537 | exp_end = tok; |
9c06b0b4 | 10538 | } |
37e4754d | 10539 | } |
bbc13ae3 KS |
10540 | else |
10541 | exp_end = arg; | |
37e4754d | 10542 | |
bbc13ae3 KS |
10543 | /* Parse the rest of the arguments. From here on out, everything |
10544 | is in terms of a newly allocated string instead of the original | |
10545 | ARG. */ | |
81b1e71c TT |
10546 | std::string expression (arg, exp_end - arg); |
10547 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10548 | innermost_block_tracker tracker; |
10549 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10550 | exp_end = arg; |
fa8a61dc TT |
10551 | /* Remove trailing whitespace from the expression before saving it. |
10552 | This makes the eventual display of the expression string a bit | |
10553 | prettier. */ | |
10554 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10555 | --exp_end; | |
10556 | ||
65d79d4b | 10557 | /* Checking if the expression is not constant. */ |
4d01a485 | 10558 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10559 | { |
10560 | int len; | |
10561 | ||
10562 | len = exp_end - exp_start; | |
10563 | while (len > 0 && isspace (exp_start[len - 1])) | |
10564 | len--; | |
10565 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10566 | } | |
10567 | ||
699bd4cf | 10568 | exp_valid_block = tracker.block (); |
b926417a | 10569 | struct value *mark = value_mark (); |
850645cf TT |
10570 | struct value *val_as_value = nullptr; |
10571 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10572 | just_location); | |
06a64a0b | 10573 | |
850645cf | 10574 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10575 | { |
850645cf TT |
10576 | saved_bitpos = value_bitpos (val_as_value); |
10577 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10578 | } |
10579 | ||
850645cf | 10580 | value_ref_ptr val; |
06a64a0b TT |
10581 | if (just_location) |
10582 | { | |
9c06b0b4 TJB |
10583 | int ret; |
10584 | ||
06a64a0b | 10585 | exp_valid_block = NULL; |
850645cf | 10586 | val = release_value (value_addr (result)); |
06a64a0b | 10587 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10588 | |
10589 | if (use_mask) | |
10590 | { | |
850645cf | 10591 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10592 | mask); |
10593 | if (ret == -1) | |
10594 | error (_("This target does not support masked watchpoints.")); | |
10595 | else if (ret == -2) | |
10596 | error (_("Invalid mask or memory region.")); | |
10597 | } | |
06a64a0b | 10598 | } |
850645cf TT |
10599 | else if (val_as_value != NULL) |
10600 | val = release_value (val_as_value); | |
c906108c | 10601 | |
f1735a53 TT |
10602 | tok = skip_spaces (arg); |
10603 | end_tok = skip_to_space (tok); | |
c906108c SS |
10604 | |
10605 | toklen = end_tok - tok; | |
10606 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10607 | { | |
10608 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10609 | innermost_block_tracker if_tracker; |
10610 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10611 | |
10612 | /* The watchpoint expression may not be local, but the condition | |
10613 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10614 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10615 | |
c906108c SS |
10616 | cond_end = tok; |
10617 | } | |
10618 | if (*tok) | |
8a3fe4f8 | 10619 | error (_("Junk at end of command.")); |
c906108c | 10620 | |
441d7c93 PA |
10621 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10622 | ||
10623 | /* Save this because create_internal_breakpoint below invalidates | |
10624 | 'wp_frame'. */ | |
10625 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10626 | |
10627 | /* If the expression is "local", then set up a "watchpoint scope" | |
10628 | breakpoint at the point where we've left the scope of the watchpoint | |
10629 | expression. Create the scope breakpoint before the watchpoint, so | |
10630 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10631 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10632 | { |
441d7c93 PA |
10633 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10634 | ||
10635 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10636 | { |
441d7c93 PA |
10637 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10638 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10639 | ||
edb3359d | 10640 | scope_breakpoint |
441d7c93 | 10641 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10642 | bp_watchpoint_scope, |
10643 | &momentary_breakpoint_ops); | |
d983da9c | 10644 | |
441d7c93 PA |
10645 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10646 | wp_frame = NULL; | |
10647 | ||
edb3359d | 10648 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10649 | |
edb3359d DJ |
10650 | /* Automatically delete the breakpoint when it hits. */ |
10651 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10652 | |
edb3359d | 10653 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10654 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10655 | |
edb3359d | 10656 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10657 | scope_breakpoint->loc->gdbarch = caller_arch; |
10658 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10659 | scope_breakpoint->loc->address |
a6d9a66e UW |
10660 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10661 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10662 | scope_breakpoint->type); |
10663 | } | |
d983da9c DJ |
10664 | } |
10665 | ||
e8369a73 AB |
10666 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10667 | watchpoints here even if hardware watchpoints are turned off, a call | |
10668 | to update_watchpoint later in this function will cause the type to | |
10669 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10670 | ||
10671 | if (accessflag == hw_read) | |
10672 | bp_type = bp_read_watchpoint; | |
10673 | else if (accessflag == hw_access) | |
10674 | bp_type = bp_access_watchpoint; | |
10675 | else | |
10676 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10677 | |
b270e6f9 | 10678 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10679 | |
348d480f | 10680 | if (use_mask) |
b270e6f9 | 10681 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10682 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10683 | else |
b270e6f9 | 10684 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10685 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10686 | w->thread = thread; |
10687 | w->disposition = disp_donttouch; | |
10688 | w->pspace = current_program_space; | |
b22e99fd | 10689 | w->exp = std::move (exp); |
3a5c3e22 PA |
10690 | w->exp_valid_block = exp_valid_block; |
10691 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10692 | if (just_location) |
10693 | { | |
850645cf TT |
10694 | struct type *t = value_type (val.get ()); |
10695 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10696 | |
43cc5389 TT |
10697 | w->exp_string_reparse |
10698 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10699 | |
3a5c3e22 | 10700 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10701 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10702 | } |
10703 | else | |
3a5c3e22 | 10704 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10705 | |
10706 | if (use_mask) | |
10707 | { | |
3a5c3e22 | 10708 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10709 | } |
10710 | else | |
10711 | { | |
3a5c3e22 | 10712 | w->val = val; |
bb9d5f81 PP |
10713 | w->val_bitpos = saved_bitpos; |
10714 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10715 | w->val_valid = true; |
9c06b0b4 | 10716 | } |
77b06cd7 | 10717 | |
c906108c | 10718 | if (cond_start) |
c1fc2657 | 10719 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10720 | else |
c1fc2657 | 10721 | w->cond_string = 0; |
c5aa993b | 10722 | |
441d7c93 | 10723 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10724 | { |
441d7c93 | 10725 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10726 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10727 | } |
c906108c | 10728 | else |
f6bc2008 | 10729 | { |
3a5c3e22 PA |
10730 | w->watchpoint_frame = null_frame_id; |
10731 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10732 | } |
c906108c | 10733 | |
d983da9c | 10734 | if (scope_breakpoint != NULL) |
c906108c | 10735 | { |
d983da9c DJ |
10736 | /* The scope breakpoint is related to the watchpoint. We will |
10737 | need to act on them together. */ | |
c1fc2657 | 10738 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10739 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10740 | } |
d983da9c | 10741 | |
06a64a0b TT |
10742 | if (!just_location) |
10743 | value_free_to_mark (mark); | |
2d134ed3 | 10744 | |
b270e6f9 TT |
10745 | /* Finally update the new watchpoint. This creates the locations |
10746 | that should be inserted. */ | |
10747 | update_watchpoint (w.get (), 1); | |
a9634178 | 10748 | |
b270e6f9 | 10749 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10750 | } |
10751 | ||
e09342b5 | 10752 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10753 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10754 | |
c906108c | 10755 | static int |
a6535de1 | 10756 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10757 | { |
10758 | int found_memory_cnt = 0; | |
10759 | ||
10760 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10761 | if (!can_use_hw_watchpoints) |
c906108c | 10762 | return 0; |
c5aa993b | 10763 | |
a6535de1 TT |
10764 | gdb_assert (!vals.empty ()); |
10765 | struct value *head = vals[0].get (); | |
10766 | ||
5c44784c JM |
10767 | /* Make sure that the value of the expression depends only upon |
10768 | memory contents, and values computed from them within GDB. If we | |
10769 | find any register references or function calls, we can't use a | |
10770 | hardware watchpoint. | |
10771 | ||
10772 | The idea here is that evaluating an expression generates a series | |
10773 | of values, one holding the value of every subexpression. (The | |
10774 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10775 | a*b+c.) GDB's values hold almost enough information to establish | |
10776 | the criteria given above --- they identify memory lvalues, | |
10777 | register lvalues, computed values, etcetera. So we can evaluate | |
10778 | the expression, and then scan the chain of values that leaves | |
10779 | behind to decide whether we can detect any possible change to the | |
10780 | expression's final value using only hardware watchpoints. | |
10781 | ||
10782 | However, I don't think that the values returned by inferior | |
10783 | function calls are special in any way. So this function may not | |
10784 | notice that an expression involving an inferior function call | |
10785 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10786 | for (const value_ref_ptr &iter : vals) |
c906108c | 10787 | { |
a6535de1 TT |
10788 | struct value *v = iter.get (); |
10789 | ||
5c44784c | 10790 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10791 | { |
8464be76 DJ |
10792 | if (v != head && value_lazy (v)) |
10793 | /* A lazy memory lvalue in the chain is one that GDB never | |
10794 | needed to fetch; we either just used its address (e.g., | |
10795 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10796 | in `a,b'). This doesn't apply to HEAD; if that is | |
10797 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10798 | ; |
53a5351d | 10799 | else |
5c44784c JM |
10800 | { |
10801 | /* Ahh, memory we actually used! Check if we can cover | |
10802 | it with hardware watchpoints. */ | |
df407dfe | 10803 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10804 | |
10805 | /* We only watch structs and arrays if user asked for it | |
10806 | explicitly, never if they just happen to appear in a | |
10807 | middle of some value chain. */ | |
10808 | if (v == head | |
78134374 SM |
10809 | || (vtype->code () != TYPE_CODE_STRUCT |
10810 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10811 | { |
42ae5230 | 10812 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10813 | int len; |
10814 | int num_regs; | |
10815 | ||
a9634178 | 10816 | len = (target_exact_watchpoints |
e09342b5 TJB |
10817 | && is_scalar_type_recursive (vtype))? |
10818 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10819 | |
e09342b5 TJB |
10820 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10821 | if (!num_regs) | |
2e70b7b9 MS |
10822 | return 0; |
10823 | else | |
e09342b5 | 10824 | found_memory_cnt += num_regs; |
2e70b7b9 | 10825 | } |
5c44784c | 10826 | } |
c5aa993b | 10827 | } |
5086187c AC |
10828 | else if (VALUE_LVAL (v) != not_lval |
10829 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10830 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10831 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10832 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10833 | } |
10834 | ||
10835 | /* The expression itself looks suitable for using a hardware | |
10836 | watchpoint, but give the target machine a chance to reject it. */ | |
10837 | return found_memory_cnt; | |
10838 | } | |
10839 | ||
8b93c638 | 10840 | void |
f2fc3015 | 10841 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10842 | { |
84f4c1fe | 10843 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10844 | } |
10845 | ||
06a64a0b TT |
10846 | /* A helper function that looks for the "-location" argument and then |
10847 | calls watch_command_1. */ | |
10848 | ||
10849 | static void | |
0b39b52e | 10850 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10851 | { |
10852 | int just_location = 0; | |
10853 | ||
10854 | if (arg | |
10855 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10856 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 10857 | just_location = 1; |
06a64a0b | 10858 | |
84f4c1fe | 10859 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10860 | } |
8926118c | 10861 | |
c5aa993b | 10862 | static void |
0b39b52e | 10863 | watch_command (const char *arg, int from_tty) |
c906108c | 10864 | { |
06a64a0b | 10865 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10866 | } |
10867 | ||
8b93c638 | 10868 | void |
f2fc3015 | 10869 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10870 | { |
84f4c1fe | 10871 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10872 | } |
8926118c | 10873 | |
c5aa993b | 10874 | static void |
0b39b52e | 10875 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10876 | { |
06a64a0b | 10877 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10878 | } |
10879 | ||
8b93c638 | 10880 | void |
f2fc3015 | 10881 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10882 | { |
84f4c1fe | 10883 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10884 | } |
8926118c | 10885 | |
c5aa993b | 10886 | static void |
0b39b52e | 10887 | awatch_command (const char *arg, int from_tty) |
c906108c | 10888 | { |
06a64a0b | 10889 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10890 | } |
c906108c | 10891 | \f |
c5aa993b | 10892 | |
cfc31633 PA |
10893 | /* Data for the FSM that manages the until(location)/advance commands |
10894 | in infcmd.c. Here because it uses the mechanisms of | |
10895 | breakpoints. */ | |
c906108c | 10896 | |
46e3ed7f | 10897 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10898 | { |
46e3ed7f | 10899 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10900 | int thread; |
10901 | ||
10902 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10903 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10904 | |
10905 | /* Breakpoint set at the return address in the caller frame. May be | |
10906 | NULL. */ | |
46e3ed7f | 10907 | breakpoint_up caller_breakpoint; |
cfc31633 | 10908 | |
46e3ed7f TT |
10909 | until_break_fsm (struct interp *cmd_interp, int thread, |
10910 | breakpoint_up &&location_breakpoint, | |
10911 | breakpoint_up &&caller_breakpoint) | |
10912 | : thread_fsm (cmd_interp), | |
10913 | thread (thread), | |
10914 | location_breakpoint (std::move (location_breakpoint)), | |
10915 | caller_breakpoint (std::move (caller_breakpoint)) | |
10916 | { | |
10917 | } | |
cfc31633 | 10918 | |
46e3ed7f TT |
10919 | void clean_up (struct thread_info *thread) override; |
10920 | bool should_stop (struct thread_info *thread) override; | |
10921 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10922 | }; |
10923 | ||
cfc31633 PA |
10924 | /* Implementation of the 'should_stop' FSM method for the |
10925 | until(location)/advance commands. */ | |
10926 | ||
46e3ed7f TT |
10927 | bool |
10928 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10929 | { |
cfc31633 | 10930 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10931 | location_breakpoint.get ()) != NULL |
10932 | || (caller_breakpoint != NULL | |
cfc31633 | 10933 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10934 | caller_breakpoint.get ()) != NULL)) |
10935 | set_finished (); | |
cfc31633 | 10936 | |
46e3ed7f | 10937 | return true; |
cfc31633 PA |
10938 | } |
10939 | ||
10940 | /* Implementation of the 'clean_up' FSM method for the | |
10941 | until(location)/advance commands. */ | |
10942 | ||
46e3ed7f TT |
10943 | void |
10944 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10945 | { |
cfc31633 | 10946 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10947 | location_breakpoint.reset (); |
10948 | caller_breakpoint.reset (); | |
10949 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10950 | } |
10951 | ||
10952 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10953 | until(location)/advance commands. */ | |
10954 | ||
46e3ed7f TT |
10955 | enum async_reply_reason |
10956 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10957 | { |
10958 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10959 | } |
10960 | ||
c906108c | 10961 | void |
f2fc3015 | 10962 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10963 | { |
8556afb4 PA |
10964 | struct frame_info *frame; |
10965 | struct gdbarch *frame_gdbarch; | |
10966 | struct frame_id stack_frame_id; | |
10967 | struct frame_id caller_frame_id; | |
186c406b TT |
10968 | int thread; |
10969 | struct thread_info *tp; | |
c906108c | 10970 | |
70509625 | 10971 | clear_proceed_status (0); |
c906108c SS |
10972 | |
10973 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10974 | this function. */ |
c5aa993b | 10975 | |
ffc2605c | 10976 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 10977 | |
6c5b2ebe PA |
10978 | std::vector<symtab_and_line> sals |
10979 | = (last_displayed_sal_is_valid () | |
10980 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
10981 | get_last_displayed_symtab (), | |
10982 | get_last_displayed_line ()) | |
10983 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 10984 | NULL, NULL, 0)); |
c5aa993b | 10985 | |
6c5b2ebe | 10986 | if (sals.size () != 1) |
8a3fe4f8 | 10987 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10988 | |
6c5b2ebe | 10989 | symtab_and_line &sal = sals[0]; |
c5aa993b | 10990 | |
c906108c | 10991 | if (*arg) |
8a3fe4f8 | 10992 | error (_("Junk at end of arguments.")); |
c5aa993b | 10993 | |
c906108c | 10994 | resolve_sal_pc (&sal); |
c5aa993b | 10995 | |
186c406b | 10996 | tp = inferior_thread (); |
5d5658a1 | 10997 | thread = tp->global_num; |
186c406b | 10998 | |
8556afb4 PA |
10999 | /* Note linespec handling above invalidates the frame chain. |
11000 | Installing a breakpoint also invalidates the frame chain (as it | |
11001 | may need to switch threads), so do any frame handling before | |
11002 | that. */ | |
11003 | ||
11004 | frame = get_selected_frame (NULL); | |
11005 | frame_gdbarch = get_frame_arch (frame); | |
11006 | stack_frame_id = get_stack_frame_id (frame); | |
11007 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11008 | |
ae66c1fc EZ |
11009 | /* Keep within the current frame, or in frames called by the current |
11010 | one. */ | |
edb3359d | 11011 | |
454dafbd | 11012 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11013 | |
11014 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11015 | ||
883bc8d1 | 11016 | if (frame_id_p (caller_frame_id)) |
c906108c | 11017 | { |
883bc8d1 | 11018 | struct symtab_and_line sal2; |
cfc31633 | 11019 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11020 | |
11021 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11022 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11023 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11024 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11025 | sal2, | |
11026 | caller_frame_id, | |
11027 | bp_until); | |
186c406b | 11028 | |
883bc8d1 | 11029 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11030 | lj_deleter.emplace (thread); |
c906108c | 11031 | } |
c5aa993b | 11032 | |
c70a6932 JK |
11033 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11034 | frame = NULL; | |
11035 | ||
454dafbd | 11036 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11037 | if (anywhere) |
11038 | /* If the user told us to continue until a specified location, | |
11039 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11040 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11041 | null_frame_id, bp_until); | |
883bc8d1 PA |
11042 | else |
11043 | /* Otherwise, specify the selected frame, because we want to stop | |
11044 | only at the very same frame. */ | |
cfc31633 PA |
11045 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11046 | stack_frame_id, bp_until); | |
883bc8d1 | 11047 | |
46e3ed7f TT |
11048 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11049 | std::move (location_breakpoint), | |
11050 | std::move (caller_breakpoint)); | |
f107f563 | 11051 | |
5419bdae TT |
11052 | if (lj_deleter) |
11053 | lj_deleter->release (); | |
f107f563 | 11054 | |
cfc31633 | 11055 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11056 | } |
ae66c1fc | 11057 | |
c906108c SS |
11058 | /* This function attempts to parse an optional "if <cond>" clause |
11059 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11060 | |
c906108c SS |
11061 | Else, it returns a pointer to the condition string. (It does not |
11062 | attempt to evaluate the string against a particular block.) And, | |
11063 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11064 | if clause in the arg string. */ |
53a5351d | 11065 | |
63160a43 PA |
11066 | const char * |
11067 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11068 | { |
63160a43 | 11069 | const char *cond_string; |
c5aa993b JM |
11070 | |
11071 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11072 | return NULL; |
c5aa993b | 11073 | |
4a64f543 | 11074 | /* Skip the "if" keyword. */ |
c906108c | 11075 | (*arg) += 2; |
c5aa993b | 11076 | |
c906108c | 11077 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11078 | condition string. */ |
f1735a53 | 11079 | *arg = skip_spaces (*arg); |
c906108c | 11080 | cond_string = *arg; |
c5aa993b | 11081 | |
4a64f543 MS |
11082 | /* Assume that the condition occupies the remainder of the arg |
11083 | string. */ | |
c906108c | 11084 | (*arg) += strlen (cond_string); |
c5aa993b | 11085 | |
c906108c SS |
11086 | return cond_string; |
11087 | } | |
c5aa993b | 11088 | |
c906108c SS |
11089 | /* Commands to deal with catching events, such as signals, exceptions, |
11090 | process start/exit, etc. */ | |
c5aa993b JM |
11091 | |
11092 | typedef enum | |
11093 | { | |
44feb3ce TT |
11094 | catch_fork_temporary, catch_vfork_temporary, |
11095 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11096 | } |
11097 | catch_fork_kind; | |
11098 | ||
c906108c | 11099 | static void |
eb4c3f4a | 11100 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11101 | struct cmd_list_element *command) |
c906108c | 11102 | { |
a6d9a66e | 11103 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11104 | const char *cond_string = NULL; |
44feb3ce TT |
11105 | catch_fork_kind fork_kind; |
11106 | int tempflag; | |
11107 | ||
11108 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11109 | tempflag = (fork_kind == catch_fork_temporary | |
11110 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11111 | |
44feb3ce TT |
11112 | if (!arg) |
11113 | arg = ""; | |
f1735a53 | 11114 | arg = skip_spaces (arg); |
c5aa993b | 11115 | |
c906108c | 11116 | /* The allowed syntax is: |
c5aa993b JM |
11117 | catch [v]fork |
11118 | catch [v]fork if <cond> | |
11119 | ||
4a64f543 | 11120 | First, check if there's an if clause. */ |
c906108c | 11121 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11122 | |
c906108c | 11123 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11124 | error (_("Junk at end of arguments.")); |
c5aa993b | 11125 | |
c906108c | 11126 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11127 | and enable reporting of such events. */ |
c5aa993b JM |
11128 | switch (fork_kind) |
11129 | { | |
44feb3ce TT |
11130 | case catch_fork_temporary: |
11131 | case catch_fork_permanent: | |
a6d9a66e | 11132 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11133 | &catch_fork_breakpoint_ops); |
c906108c | 11134 | break; |
44feb3ce TT |
11135 | case catch_vfork_temporary: |
11136 | case catch_vfork_permanent: | |
a6d9a66e | 11137 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11138 | &catch_vfork_breakpoint_ops); |
c906108c | 11139 | break; |
c5aa993b | 11140 | default: |
8a3fe4f8 | 11141 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11142 | break; |
c5aa993b | 11143 | } |
c906108c SS |
11144 | } |
11145 | ||
11146 | static void | |
eb4c3f4a | 11147 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11148 | struct cmd_list_element *command) |
c906108c | 11149 | { |
a6d9a66e | 11150 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11151 | int tempflag; |
63160a43 | 11152 | const char *cond_string = NULL; |
c906108c | 11153 | |
44feb3ce TT |
11154 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11155 | ||
11156 | if (!arg) | |
11157 | arg = ""; | |
f1735a53 | 11158 | arg = skip_spaces (arg); |
c906108c SS |
11159 | |
11160 | /* The allowed syntax is: | |
c5aa993b JM |
11161 | catch exec |
11162 | catch exec if <cond> | |
c906108c | 11163 | |
4a64f543 | 11164 | First, check if there's an if clause. */ |
c906108c SS |
11165 | cond_string = ep_parse_optional_if_clause (&arg); |
11166 | ||
11167 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11168 | error (_("Junk at end of arguments.")); |
c906108c | 11169 | |
b270e6f9 TT |
11170 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11171 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11172 | &catch_exec_breakpoint_ops); |
11173 | c->exec_pathname = NULL; | |
11174 | ||
b270e6f9 | 11175 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11176 | } |
c5aa993b | 11177 | |
9ac4176b | 11178 | void |
28010a5d PA |
11179 | init_ada_exception_breakpoint (struct breakpoint *b, |
11180 | struct gdbarch *gdbarch, | |
11181 | struct symtab_and_line sal, | |
f2fc3015 | 11182 | const char *addr_string, |
c0a91b2b | 11183 | const struct breakpoint_ops *ops, |
28010a5d | 11184 | int tempflag, |
349774ef | 11185 | int enabled, |
28010a5d | 11186 | int from_tty) |
f7f9143b | 11187 | { |
f7f9143b JB |
11188 | if (from_tty) |
11189 | { | |
5af949e3 UW |
11190 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11191 | if (!loc_gdbarch) | |
11192 | loc_gdbarch = gdbarch; | |
11193 | ||
6c95b8df PA |
11194 | describe_other_breakpoints (loc_gdbarch, |
11195 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11196 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11197 | version for exception catchpoints, because two catchpoints | |
11198 | used for different exception names will use the same address. | |
11199 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11200 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11201 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11202 | the user what type of catchpoint it is. The above is good |
11203 | enough for now, though. */ | |
11204 | } | |
11205 | ||
f06f1252 | 11206 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11207 | |
349774ef | 11208 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11209 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11210 | b->location = string_to_event_location (&addr_string, |
11211 | language_def (language_ada)); | |
f7f9143b | 11212 | b->language = language_ada; |
f7f9143b JB |
11213 | } |
11214 | ||
c906108c SS |
11215 | \f |
11216 | ||
81b1e71c | 11217 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11218 | |
11219 | static int | |
81b1e71c | 11220 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11221 | { |
81b1e71c TT |
11222 | uintptr_t ua = (uintptr_t) a; |
11223 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11224 | |
81b1e71c | 11225 | if (a->number < b->number) |
8a2c437b | 11226 | return -1; |
81b1e71c | 11227 | else if (a->number > b->number) |
8a2c437b TT |
11228 | return 1; |
11229 | ||
11230 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11231 | the number 0. */ | |
11232 | if (ua < ub) | |
11233 | return -1; | |
94b0e70d | 11234 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11235 | } |
11236 | ||
80f8a6eb | 11237 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11238 | |
11239 | static void | |
0b39b52e | 11240 | clear_command (const char *arg, int from_tty) |
c906108c | 11241 | { |
81b1e71c | 11242 | struct breakpoint *b; |
c906108c | 11243 | int default_match; |
c906108c | 11244 | |
6c5b2ebe PA |
11245 | std::vector<symtab_and_line> decoded_sals; |
11246 | symtab_and_line last_sal; | |
11247 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11248 | if (arg) |
11249 | { | |
6c5b2ebe PA |
11250 | decoded_sals |
11251 | = decode_line_with_current_source (arg, | |
11252 | (DECODE_LINE_FUNFIRSTLINE | |
11253 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11254 | default_match = 0; |
6c5b2ebe | 11255 | sals = decoded_sals; |
c906108c SS |
11256 | } |
11257 | else | |
11258 | { | |
1bfeeb0f JL |
11259 | /* Set sal's line, symtab, pc, and pspace to the values |
11260 | corresponding to the last call to print_frame_info. If the | |
11261 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11262 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11263 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11264 | error (_("No source file specified.")); |
c906108c | 11265 | |
c906108c | 11266 | default_match = 1; |
6c5b2ebe | 11267 | sals = last_sal; |
c906108c SS |
11268 | } |
11269 | ||
4a64f543 MS |
11270 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11271 | seems, because all existing breakpoints typically have both | |
11272 | file/line and pc set. So, if clear is given file/line, we can | |
11273 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11274 | |
11275 | We only support clearing given the address explicitly | |
11276 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11277 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11278 | due to optimization, all in one block. |
4a64f543 MS |
11279 | |
11280 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11281 | PC corresponding to the same file:line, the breakpoint won't |
11282 | be cleared. We probably can still clear the breakpoint, but | |
11283 | since the other PC value is never presented to user, user | |
11284 | can only find it by guessing, and it does not seem important | |
11285 | to support that. */ | |
11286 | ||
4a64f543 MS |
11287 | /* For each line spec given, delete bps which correspond to it. Do |
11288 | it in two passes, solely to preserve the current behavior that | |
11289 | from_tty is forced true if we delete more than one | |
11290 | breakpoint. */ | |
c906108c | 11291 | |
81b1e71c | 11292 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11293 | for (const auto &sal : sals) |
c906108c | 11294 | { |
05cba821 JK |
11295 | const char *sal_fullname; |
11296 | ||
c906108c | 11297 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11298 | If line given (pc == 0), clear all bpts on specified line. |
11299 | If defaulting, clear all bpts on default line | |
c906108c | 11300 | or at default pc. |
c5aa993b JM |
11301 | |
11302 | defaulting sal.pc != 0 tests to do | |
11303 | ||
11304 | 0 1 pc | |
11305 | 1 1 pc _and_ line | |
11306 | 0 0 line | |
11307 | 1 0 <can't happen> */ | |
c906108c | 11308 | |
05cba821 JK |
11309 | sal_fullname = (sal.symtab == NULL |
11310 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11311 | |
4a64f543 | 11312 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11313 | ALL_BREAKPOINTS (b) |
c5aa993b | 11314 | { |
0d381245 | 11315 | int match = 0; |
4a64f543 | 11316 | /* Are we going to delete b? */ |
cc60f2e3 | 11317 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11318 | { |
11319 | struct bp_location *loc = b->loc; | |
11320 | for (; loc; loc = loc->next) | |
11321 | { | |
f8eba3c6 TT |
11322 | /* If the user specified file:line, don't allow a PC |
11323 | match. This matches historical gdb behavior. */ | |
11324 | int pc_match = (!sal.explicit_line | |
11325 | && sal.pc | |
11326 | && (loc->pspace == sal.pspace) | |
11327 | && (loc->address == sal.pc) | |
11328 | && (!section_is_overlay (loc->section) | |
11329 | || loc->section == sal.section)); | |
4aac40c8 TT |
11330 | int line_match = 0; |
11331 | ||
11332 | if ((default_match || sal.explicit_line) | |
2f202fde | 11333 | && loc->symtab != NULL |
05cba821 | 11334 | && sal_fullname != NULL |
4aac40c8 | 11335 | && sal.pspace == loc->pspace |
05cba821 JK |
11336 | && loc->line_number == sal.line |
11337 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11338 | sal_fullname) == 0) | |
11339 | line_match = 1; | |
4aac40c8 | 11340 | |
0d381245 VP |
11341 | if (pc_match || line_match) |
11342 | { | |
11343 | match = 1; | |
11344 | break; | |
11345 | } | |
11346 | } | |
11347 | } | |
11348 | ||
11349 | if (match) | |
81b1e71c | 11350 | found.push_back (b); |
c906108c | 11351 | } |
80f8a6eb | 11352 | } |
8a2c437b | 11353 | |
80f8a6eb | 11354 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11355 | if (found.empty ()) |
80f8a6eb MS |
11356 | { |
11357 | if (arg) | |
8a3fe4f8 | 11358 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11359 | else |
8a3fe4f8 | 11360 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11361 | } |
c906108c | 11362 | |
8a2c437b | 11363 | /* Remove duplicates from the vec. */ |
81b1e71c | 11364 | std::sort (found.begin (), found.end (), |
b926417a | 11365 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11366 | { |
b926417a | 11367 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11368 | }); |
11369 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11370 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11371 | { |
b926417a | 11372 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11373 | }), |
11374 | found.end ()); | |
8a2c437b | 11375 | |
81b1e71c | 11376 | if (found.size () > 1) |
4a64f543 | 11377 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11378 | if (from_tty) |
a3f17187 | 11379 | { |
81b1e71c | 11380 | if (found.size () == 1) |
a3f17187 AC |
11381 | printf_unfiltered (_("Deleted breakpoint ")); |
11382 | else | |
11383 | printf_unfiltered (_("Deleted breakpoints ")); | |
11384 | } | |
d6e956e5 | 11385 | |
81b1e71c | 11386 | for (breakpoint *iter : found) |
80f8a6eb | 11387 | { |
c5aa993b | 11388 | if (from_tty) |
81b1e71c TT |
11389 | printf_unfiltered ("%d ", iter->number); |
11390 | delete_breakpoint (iter); | |
c906108c | 11391 | } |
80f8a6eb MS |
11392 | if (from_tty) |
11393 | putchar_unfiltered ('\n'); | |
c906108c SS |
11394 | } |
11395 | \f | |
11396 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11397 | all breakpoints that are marked for deletion, whether hit or not. | |
11398 | This is called after any breakpoint is hit, or after errors. */ | |
11399 | ||
11400 | void | |
fba45db2 | 11401 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11402 | { |
35df4500 | 11403 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11404 | |
11405 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11406 | if (bs->breakpoint_at |
11407 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11408 | && bs->stop) |
f431efe5 | 11409 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11410 | |
35df4500 | 11411 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11412 | { |
b5de0fa7 | 11413 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11414 | delete_breakpoint (b); |
11415 | } | |
c906108c SS |
11416 | } |
11417 | ||
4a64f543 | 11418 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11419 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11420 | bl_address_is_meaningful says), secondarily by ordering first |
11421 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11422 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11423 | |
11424 | static int | |
39ef2f62 | 11425 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11426 | { |
876fa593 | 11427 | if (a->address != b->address) |
39ef2f62 | 11428 | return a->address < b->address; |
876fa593 | 11429 | |
dea2aa5f LM |
11430 | /* Sort locations at the same address by their pspace number, keeping |
11431 | locations of the same inferior (in a multi-inferior environment) | |
11432 | grouped. */ | |
11433 | ||
11434 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11435 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11436 | |
876fa593 | 11437 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11438 | if (a->permanent != b->permanent) |
39ef2f62 | 11439 | return a->permanent > b->permanent; |
876fa593 | 11440 | |
c56a97f9 JK |
11441 | /* Make the internal GDB representation stable across GDB runs |
11442 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11443 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11444 | |
11445 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11446 | return a->owner->number < b->owner->number; |
876fa593 | 11447 | |
39ef2f62 | 11448 | return a < b; |
876fa593 JK |
11449 | } |
11450 | ||
f5336ca5 PA |
11451 | /* Set bp_locations_placed_address_before_address_max and |
11452 | bp_locations_shadow_len_after_address_max according to the current | |
11453 | content of the bp_locations array. */ | |
f7545552 TT |
11454 | |
11455 | static void | |
f5336ca5 | 11456 | bp_locations_target_extensions_update (void) |
f7545552 | 11457 | { |
876fa593 JK |
11458 | struct bp_location *bl, **blp_tmp; |
11459 | ||
f5336ca5 PA |
11460 | bp_locations_placed_address_before_address_max = 0; |
11461 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11462 | |
11463 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11464 | { | |
11465 | CORE_ADDR start, end, addr; | |
11466 | ||
11467 | if (!bp_location_has_shadow (bl)) | |
11468 | continue; | |
11469 | ||
11470 | start = bl->target_info.placed_address; | |
11471 | end = start + bl->target_info.shadow_len; | |
11472 | ||
11473 | gdb_assert (bl->address >= start); | |
11474 | addr = bl->address - start; | |
f5336ca5 PA |
11475 | if (addr > bp_locations_placed_address_before_address_max) |
11476 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11477 | |
11478 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11479 | ||
11480 | gdb_assert (bl->address < end); | |
11481 | addr = end - bl->address; | |
f5336ca5 PA |
11482 | if (addr > bp_locations_shadow_len_after_address_max) |
11483 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11484 | } |
f7545552 TT |
11485 | } |
11486 | ||
1e4d1764 YQ |
11487 | /* Download tracepoint locations if they haven't been. */ |
11488 | ||
11489 | static void | |
11490 | download_tracepoint_locations (void) | |
11491 | { | |
7ed2c994 | 11492 | struct breakpoint *b; |
dd2e65cc | 11493 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11494 | |
5ed8105e | 11495 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11496 | |
7ed2c994 | 11497 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11498 | { |
7ed2c994 | 11499 | struct bp_location *bl; |
1e4d1764 | 11500 | struct tracepoint *t; |
f2a8bc8a | 11501 | int bp_location_downloaded = 0; |
1e4d1764 | 11502 | |
7ed2c994 | 11503 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11504 | ? !may_insert_fast_tracepoints |
11505 | : !may_insert_tracepoints)) | |
11506 | continue; | |
11507 | ||
dd2e65cc YQ |
11508 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11509 | { | |
11510 | if (target_can_download_tracepoint ()) | |
11511 | can_download_tracepoint = TRIBOOL_TRUE; | |
11512 | else | |
11513 | can_download_tracepoint = TRIBOOL_FALSE; | |
11514 | } | |
11515 | ||
11516 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11517 | break; | |
11518 | ||
7ed2c994 YQ |
11519 | for (bl = b->loc; bl; bl = bl->next) |
11520 | { | |
11521 | /* In tracepoint, locations are _never_ duplicated, so | |
11522 | should_be_inserted is equivalent to | |
11523 | unduplicated_should_be_inserted. */ | |
11524 | if (!should_be_inserted (bl) || bl->inserted) | |
11525 | continue; | |
1e4d1764 | 11526 | |
7ed2c994 | 11527 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11528 | |
7ed2c994 | 11529 | target_download_tracepoint (bl); |
1e4d1764 | 11530 | |
7ed2c994 | 11531 | bl->inserted = 1; |
f2a8bc8a | 11532 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11533 | } |
11534 | t = (struct tracepoint *) b; | |
11535 | t->number_on_target = b->number; | |
f2a8bc8a | 11536 | if (bp_location_downloaded) |
76727919 | 11537 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11538 | } |
1e4d1764 YQ |
11539 | } |
11540 | ||
934709f0 PW |
11541 | /* Swap the insertion/duplication state between two locations. */ |
11542 | ||
11543 | static void | |
11544 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11545 | { | |
11546 | const int left_inserted = left->inserted; | |
11547 | const int left_duplicate = left->duplicate; | |
b775012e | 11548 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11549 | const struct bp_target_info left_target_info = left->target_info; |
11550 | ||
1e4d1764 YQ |
11551 | /* Locations of tracepoints can never be duplicated. */ |
11552 | if (is_tracepoint (left->owner)) | |
11553 | gdb_assert (!left->duplicate); | |
11554 | if (is_tracepoint (right->owner)) | |
11555 | gdb_assert (!right->duplicate); | |
11556 | ||
934709f0 PW |
11557 | left->inserted = right->inserted; |
11558 | left->duplicate = right->duplicate; | |
b775012e | 11559 | left->needs_update = right->needs_update; |
934709f0 PW |
11560 | left->target_info = right->target_info; |
11561 | right->inserted = left_inserted; | |
11562 | right->duplicate = left_duplicate; | |
b775012e | 11563 | right->needs_update = left_needs_update; |
934709f0 PW |
11564 | right->target_info = left_target_info; |
11565 | } | |
11566 | ||
b775012e LM |
11567 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11568 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11569 | conditions on the target's side. Such conditions need to be updated on | |
11570 | the target. */ | |
11571 | ||
11572 | static void | |
11573 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11574 | { | |
11575 | struct bp_location **locp = NULL, **loc2p; | |
11576 | struct bp_location *loc; | |
11577 | CORE_ADDR address = 0; | |
11578 | int pspace_num; | |
11579 | ||
11580 | address = bl->address; | |
11581 | pspace_num = bl->pspace->num; | |
11582 | ||
11583 | /* This is only meaningful if the target is | |
11584 | evaluating conditions and if the user has | |
11585 | opted for condition evaluation on the target's | |
11586 | side. */ | |
11587 | if (gdb_evaluates_breakpoint_condition_p () | |
11588 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11589 | return; | |
11590 | ||
11591 | /* Flag all breakpoint locations with this address and | |
11592 | the same program space as the location | |
11593 | as "its condition has changed". We need to | |
11594 | update the conditions on the target's side. */ | |
11595 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11596 | { | |
11597 | loc = *loc2p; | |
11598 | ||
11599 | if (!is_breakpoint (loc->owner) | |
11600 | || pspace_num != loc->pspace->num) | |
11601 | continue; | |
11602 | ||
11603 | /* Flag the location appropriately. We use a different state to | |
11604 | let everyone know that we already updated the set of locations | |
11605 | with addr bl->address and program space bl->pspace. This is so | |
11606 | we don't have to keep calling these functions just to mark locations | |
11607 | that have already been marked. */ | |
11608 | loc->condition_changed = condition_updated; | |
11609 | ||
11610 | /* Free the agent expression bytecode as well. We will compute | |
11611 | it later on. */ | |
833177a4 | 11612 | loc->cond_bytecode.reset (); |
b775012e LM |
11613 | } |
11614 | } | |
44702360 PA |
11615 | /* Called whether new breakpoints are created, or existing breakpoints |
11616 | deleted, to update the global location list and recompute which | |
11617 | locations are duplicate of which. | |
b775012e | 11618 | |
04086b45 PA |
11619 | The INSERT_MODE flag determines whether locations may not, may, or |
11620 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11621 | info. */ | |
b60e7edf | 11622 | |
0d381245 | 11623 | static void |
44702360 | 11624 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11625 | { |
74960c60 | 11626 | struct breakpoint *b; |
876fa593 | 11627 | struct bp_location **locp, *loc; |
b775012e LM |
11628 | /* Last breakpoint location address that was marked for update. */ |
11629 | CORE_ADDR last_addr = 0; | |
11630 | /* Last breakpoint location program space that was marked for update. */ | |
11631 | int last_pspace_num = -1; | |
f7545552 | 11632 | |
2d134ed3 PA |
11633 | /* Used in the duplicates detection below. When iterating over all |
11634 | bp_locations, points to the first bp_location of a given address. | |
11635 | Breakpoints and watchpoints of different types are never | |
11636 | duplicates of each other. Keep one pointer for each type of | |
11637 | breakpoint/watchpoint, so we only need to loop over all locations | |
11638 | once. */ | |
11639 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11640 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11641 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11642 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11643 | |
f5336ca5 PA |
11644 | /* Saved former bp_locations array which we compare against the newly |
11645 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11646 | struct bp_location **old_locp; |
f5336ca5 | 11647 | unsigned old_locations_count; |
81b1e71c | 11648 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11649 | |
f5336ca5 PA |
11650 | old_locations_count = bp_locations_count; |
11651 | bp_locations = NULL; | |
11652 | bp_locations_count = 0; | |
0d381245 | 11653 | |
74960c60 | 11654 | ALL_BREAKPOINTS (b) |
876fa593 | 11655 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11656 | bp_locations_count++; |
876fa593 | 11657 | |
f5336ca5 PA |
11658 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11659 | locp = bp_locations; | |
876fa593 JK |
11660 | ALL_BREAKPOINTS (b) |
11661 | for (loc = b->loc; loc; loc = loc->next) | |
11662 | *locp++ = loc; | |
39ef2f62 CB |
11663 | std::sort (bp_locations, bp_locations + bp_locations_count, |
11664 | bp_location_is_less_than); | |
876fa593 | 11665 | |
f5336ca5 | 11666 | bp_locations_target_extensions_update (); |
74960c60 | 11667 | |
4a64f543 MS |
11668 | /* Identify bp_location instances that are no longer present in the |
11669 | new list, and therefore should be freed. Note that it's not | |
11670 | necessary that those locations should be removed from inferior -- | |
11671 | if there's another location at the same address (previously | |
11672 | marked as duplicate), we don't need to remove/insert the | |
11673 | location. | |
876fa593 | 11674 | |
4a64f543 MS |
11675 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11676 | and former bp_location array state respectively. */ | |
876fa593 | 11677 | |
f5336ca5 | 11678 | locp = bp_locations; |
81b1e71c TT |
11679 | for (old_locp = old_locations.get (); |
11680 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11681 | old_locp++) |
74960c60 | 11682 | { |
876fa593 | 11683 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11684 | struct bp_location **loc2p; |
876fa593 | 11685 | |
e5dd4106 | 11686 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11687 | not, we have to free it. */ |
c7d46a38 | 11688 | int found_object = 0; |
20874c92 VP |
11689 | /* Tells if the location should remain inserted in the target. */ |
11690 | int keep_in_target = 0; | |
11691 | int removed = 0; | |
876fa593 | 11692 | |
4a64f543 MS |
11693 | /* Skip LOCP entries which will definitely never be needed. |
11694 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11695 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11696 | && (*locp)->address < old_loc->address) |
876fa593 | 11697 | locp++; |
c7d46a38 PA |
11698 | |
11699 | for (loc2p = locp; | |
f5336ca5 | 11700 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11701 | && (*loc2p)->address == old_loc->address); |
11702 | loc2p++) | |
11703 | { | |
b775012e LM |
11704 | /* Check if this is a new/duplicated location or a duplicated |
11705 | location that had its condition modified. If so, we want to send | |
11706 | its condition to the target if evaluation of conditions is taking | |
11707 | place there. */ | |
11708 | if ((*loc2p)->condition_changed == condition_modified | |
11709 | && (last_addr != old_loc->address | |
11710 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11711 | { |
b775012e LM |
11712 | force_breakpoint_reinsertion (*loc2p); |
11713 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11714 | } |
b775012e LM |
11715 | |
11716 | if (*loc2p == old_loc) | |
11717 | found_object = 1; | |
c7d46a38 | 11718 | } |
74960c60 | 11719 | |
b775012e LM |
11720 | /* We have already handled this address, update it so that we don't |
11721 | have to go through updates again. */ | |
11722 | last_addr = old_loc->address; | |
11723 | ||
11724 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11725 | if (!found_object) | |
11726 | force_breakpoint_reinsertion (old_loc); | |
11727 | ||
4a64f543 MS |
11728 | /* If this location is no longer present, and inserted, look if |
11729 | there's maybe a new location at the same address. If so, | |
11730 | mark that one inserted, and don't remove this one. This is | |
11731 | needed so that we don't have a time window where a breakpoint | |
11732 | at certain location is not inserted. */ | |
74960c60 | 11733 | |
876fa593 | 11734 | if (old_loc->inserted) |
0d381245 | 11735 | { |
4a64f543 MS |
11736 | /* If the location is inserted now, we might have to remove |
11737 | it. */ | |
74960c60 | 11738 | |
876fa593 | 11739 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11740 | { |
4a64f543 MS |
11741 | /* The location is still present in the location list, |
11742 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11743 | keep_in_target = 1; |
74960c60 VP |
11744 | } |
11745 | else | |
11746 | { | |
b775012e LM |
11747 | /* This location still exists, but it won't be kept in the |
11748 | target since it may have been disabled. We proceed to | |
11749 | remove its target-side condition. */ | |
11750 | ||
4a64f543 MS |
11751 | /* The location is either no longer present, or got |
11752 | disabled. See if there's another location at the | |
11753 | same address, in which case we don't need to remove | |
11754 | this one from the target. */ | |
876fa593 | 11755 | |
2bdf28a0 | 11756 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11757 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11758 | { |
876fa593 | 11759 | for (loc2p = locp; |
f5336ca5 | 11760 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11761 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11762 | loc2p++) |
11763 | { | |
11764 | struct bp_location *loc2 = *loc2p; | |
11765 | ||
2d134ed3 | 11766 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11767 | { |
85d721b8 PA |
11768 | /* Read watchpoint locations are switched to |
11769 | access watchpoints, if the former are not | |
11770 | supported, but the latter are. */ | |
11771 | if (is_hardware_watchpoint (old_loc->owner)) | |
11772 | { | |
11773 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11774 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11775 | } | |
11776 | ||
934709f0 PW |
11777 | /* loc2 is a duplicated location. We need to check |
11778 | if it should be inserted in case it will be | |
11779 | unduplicated. */ | |
11780 | if (loc2 != old_loc | |
11781 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11782 | { |
934709f0 | 11783 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11784 | keep_in_target = 1; |
11785 | break; | |
11786 | } | |
876fa593 JK |
11787 | } |
11788 | } | |
11789 | } | |
74960c60 VP |
11790 | } |
11791 | ||
20874c92 VP |
11792 | if (!keep_in_target) |
11793 | { | |
834c0d03 | 11794 | if (remove_breakpoint (old_loc)) |
20874c92 | 11795 | { |
4a64f543 MS |
11796 | /* This is just about all we can do. We could keep |
11797 | this location on the global list, and try to | |
11798 | remove it next time, but there's no particular | |
11799 | reason why we will succeed next time. | |
20874c92 | 11800 | |
4a64f543 MS |
11801 | Note that at this point, old_loc->owner is still |
11802 | valid, as delete_breakpoint frees the breakpoint | |
11803 | only after calling us. */ | |
3e43a32a MS |
11804 | printf_filtered (_("warning: Error removing " |
11805 | "breakpoint %d\n"), | |
876fa593 | 11806 | old_loc->owner->number); |
20874c92 VP |
11807 | } |
11808 | removed = 1; | |
11809 | } | |
0d381245 | 11810 | } |
74960c60 VP |
11811 | |
11812 | if (!found_object) | |
1c5cfe86 | 11813 | { |
fbea99ea | 11814 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11815 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11816 | { |
db82e815 PA |
11817 | /* This location was removed from the target. In |
11818 | non-stop mode, a race condition is possible where | |
11819 | we've removed a breakpoint, but stop events for that | |
11820 | breakpoint are already queued and will arrive later. | |
11821 | We apply an heuristic to be able to distinguish such | |
11822 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11823 | breakpoint location for a bit, and will retire it | |
11824 | after we see some number of events. The theory here | |
11825 | is that reporting of events should, "on the average", | |
11826 | be fair, so after a while we'll see events from all | |
11827 | threads that have anything of interest, and no longer | |
11828 | need to keep this breakpoint location around. We | |
11829 | don't hold locations forever so to reduce chances of | |
11830 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11831 | SIGTRAP. | |
11832 | ||
11833 | The heuristic failing can be disastrous on | |
11834 | decr_pc_after_break targets. | |
11835 | ||
11836 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11837 | if we fail to recognize a late breakpoint SIGTRAP, | |
11838 | because events_till_retirement has reached 0 too | |
11839 | soon, we'll fail to do the PC adjustment, and report | |
11840 | a random SIGTRAP to the user. When the user resumes | |
11841 | the inferior, it will most likely immediately crash | |
2dec564e | 11842 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11843 | corrupted, because of being resumed e.g., in the |
11844 | middle of a multi-byte instruction, or skipped a | |
11845 | one-byte instruction. This was actually seen happen | |
11846 | on native x86-linux, and should be less rare on | |
11847 | targets that do not support new thread events, like | |
11848 | remote, due to the heuristic depending on | |
11849 | thread_count. | |
11850 | ||
11851 | Mistaking a random SIGTRAP for a breakpoint trap | |
11852 | causes similar symptoms (PC adjustment applied when | |
11853 | it shouldn't), but then again, playing with SIGTRAPs | |
11854 | behind the debugger's back is asking for trouble. | |
11855 | ||
11856 | Since hardware watchpoint traps are always | |
11857 | distinguishable from other traps, so we don't need to | |
11858 | apply keep hardware watchpoint moribund locations | |
11859 | around. We simply always ignore hardware watchpoint | |
11860 | traps we can no longer explain. */ | |
11861 | ||
5b6d1e4f PA |
11862 | process_stratum_target *proc_target = nullptr; |
11863 | for (inferior *inf : all_inferiors ()) | |
11864 | if (inf->pspace == old_loc->pspace) | |
11865 | { | |
11866 | proc_target = inf->process_target (); | |
11867 | break; | |
11868 | } | |
11869 | if (proc_target != nullptr) | |
11870 | old_loc->events_till_retirement | |
11871 | = 3 * (thread_count (proc_target) + 1); | |
11872 | else | |
11873 | old_loc->events_till_retirement = 1; | |
876fa593 | 11874 | old_loc->owner = NULL; |
20874c92 | 11875 | |
1123588c | 11876 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11877 | } |
11878 | else | |
f431efe5 PA |
11879 | { |
11880 | old_loc->owner = NULL; | |
11881 | decref_bp_location (&old_loc); | |
11882 | } | |
20874c92 | 11883 | } |
74960c60 | 11884 | } |
1c5cfe86 | 11885 | |
348d480f PA |
11886 | /* Rescan breakpoints at the same address and section, marking the |
11887 | first one as "first" and any others as "duplicates". This is so | |
11888 | that the bpt instruction is only inserted once. If we have a | |
11889 | permanent breakpoint at the same place as BPT, make that one the | |
11890 | official one, and the rest as duplicates. Permanent breakpoints | |
11891 | are sorted first for the same address. | |
11892 | ||
11893 | Do the same for hardware watchpoints, but also considering the | |
11894 | watchpoint's type (regular/access/read) and length. */ | |
11895 | ||
11896 | bp_loc_first = NULL; | |
11897 | wp_loc_first = NULL; | |
11898 | awp_loc_first = NULL; | |
11899 | rwp_loc_first = NULL; | |
11900 | ALL_BP_LOCATIONS (loc, locp) | |
11901 | { | |
11902 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11903 | non-NULL. */ | |
348d480f | 11904 | struct bp_location **loc_first_p; |
d3fbdd86 | 11905 | b = loc->owner; |
348d480f | 11906 | |
6f380991 | 11907 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11908 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11909 | /* Don't detect duplicate for tracepoint locations because they are |
11910 | never duplicated. See the comments in field `duplicate' of | |
11911 | `struct bp_location'. */ | |
348d480f | 11912 | || is_tracepoint (b)) |
b775012e LM |
11913 | { |
11914 | /* Clear the condition modification flag. */ | |
11915 | loc->condition_changed = condition_unchanged; | |
11916 | continue; | |
11917 | } | |
348d480f | 11918 | |
348d480f PA |
11919 | if (b->type == bp_hardware_watchpoint) |
11920 | loc_first_p = &wp_loc_first; | |
11921 | else if (b->type == bp_read_watchpoint) | |
11922 | loc_first_p = &rwp_loc_first; | |
11923 | else if (b->type == bp_access_watchpoint) | |
11924 | loc_first_p = &awp_loc_first; | |
11925 | else | |
11926 | loc_first_p = &bp_loc_first; | |
11927 | ||
11928 | if (*loc_first_p == NULL | |
11929 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11930 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11931 | { | |
11932 | *loc_first_p = loc; | |
11933 | loc->duplicate = 0; | |
b775012e LM |
11934 | |
11935 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11936 | { | |
11937 | loc->needs_update = 1; | |
11938 | /* Clear the condition modification flag. */ | |
11939 | loc->condition_changed = condition_unchanged; | |
11940 | } | |
348d480f PA |
11941 | continue; |
11942 | } | |
11943 | ||
934709f0 PW |
11944 | |
11945 | /* This and the above ensure the invariant that the first location | |
11946 | is not duplicated, and is the inserted one. | |
11947 | All following are marked as duplicated, and are not inserted. */ | |
11948 | if (loc->inserted) | |
11949 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11950 | loc->duplicate = 1; |
11951 | ||
b775012e LM |
11952 | /* Clear the condition modification flag. */ |
11953 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11954 | } |
11955 | ||
a25a5a45 | 11956 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11957 | { |
04086b45 | 11958 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11959 | insert_breakpoint_locations (); |
11960 | else | |
11961 | { | |
44702360 PA |
11962 | /* Even though the caller told us to not insert new |
11963 | locations, we may still need to update conditions on the | |
11964 | target's side of breakpoints that were already inserted | |
11965 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11966 | only update conditions for locations that are marked |
11967 | "needs_update". */ | |
11968 | update_inserted_breakpoint_locations (); | |
11969 | } | |
11970 | } | |
348d480f | 11971 | |
04086b45 | 11972 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11973 | download_tracepoint_locations (); |
348d480f PA |
11974 | } |
11975 | ||
11976 | void | |
11977 | breakpoint_retire_moribund (void) | |
11978 | { | |
1123588c TT |
11979 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11980 | { | |
11981 | struct bp_location *loc = moribund_locations[ix]; | |
11982 | if (--(loc->events_till_retirement) == 0) | |
11983 | { | |
11984 | decref_bp_location (&loc); | |
11985 | unordered_remove (moribund_locations, ix); | |
11986 | --ix; | |
11987 | } | |
11988 | } | |
348d480f PA |
11989 | } |
11990 | ||
11991 | static void | |
44702360 | 11992 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11993 | { |
348d480f | 11994 | |
a70b8144 | 11995 | try |
492d29ea PA |
11996 | { |
11997 | update_global_location_list (insert_mode); | |
11998 | } | |
230d2906 | 11999 | catch (const gdb_exception_error &e) |
492d29ea PA |
12000 | { |
12001 | } | |
348d480f PA |
12002 | } |
12003 | ||
12004 | /* Clear BKP from a BPS. */ | |
12005 | ||
12006 | static void | |
12007 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12008 | { | |
12009 | bpstat bs; | |
12010 | ||
12011 | for (bs = bps; bs; bs = bs->next) | |
12012 | if (bs->breakpoint_at == bpt) | |
12013 | { | |
12014 | bs->breakpoint_at = NULL; | |
12015 | bs->old_val = NULL; | |
12016 | /* bs->commands will be freed later. */ | |
12017 | } | |
12018 | } | |
12019 | ||
12020 | /* Callback for iterate_over_threads. */ | |
12021 | static int | |
12022 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12023 | { | |
9a3c8263 | 12024 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12025 | |
12026 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12027 | return 0; | |
12028 | } | |
12029 | ||
12030 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12031 | callbacks. */ | |
12032 | ||
12033 | static void | |
12034 | say_where (struct breakpoint *b) | |
12035 | { | |
12036 | struct value_print_options opts; | |
12037 | ||
12038 | get_user_print_options (&opts); | |
12039 | ||
12040 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12041 | single string. */ | |
12042 | if (b->loc == NULL) | |
12043 | { | |
f00aae0f KS |
12044 | /* For pending locations, the output differs slightly based |
12045 | on b->extra_string. If this is non-NULL, it contains either | |
12046 | a condition or dprintf arguments. */ | |
12047 | if (b->extra_string == NULL) | |
12048 | { | |
12049 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12050 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12051 | } |
12052 | else if (b->type == bp_dprintf) | |
12053 | { | |
12054 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12055 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12056 | b->extra_string); |
12057 | } | |
12058 | else | |
12059 | { | |
12060 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12061 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12062 | b->extra_string); |
12063 | } | |
348d480f PA |
12064 | } |
12065 | else | |
12066 | { | |
2f202fde | 12067 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12068 | printf_filtered (" at %ps", |
12069 | styled_string (address_style.style (), | |
12070 | paddress (b->loc->gdbarch, | |
12071 | b->loc->address))); | |
2f202fde | 12072 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12073 | { |
12074 | /* If there is a single location, we can print the location | |
12075 | more nicely. */ | |
12076 | if (b->loc->next == NULL) | |
0bb296cb | 12077 | { |
6a831f06 PA |
12078 | const char *filename |
12079 | = symtab_to_filename_for_display (b->loc->symtab); | |
12080 | printf_filtered (": file %ps, line %d.", | |
12081 | styled_string (file_name_style.style (), | |
12082 | filename), | |
0bb296cb TT |
12083 | b->loc->line_number); |
12084 | } | |
f8eba3c6 TT |
12085 | else |
12086 | /* This is not ideal, but each location may have a | |
12087 | different file name, and this at least reflects the | |
12088 | real situation somewhat. */ | |
f00aae0f | 12089 | printf_filtered (": %s.", |
d28cd78a | 12090 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12091 | } |
348d480f PA |
12092 | |
12093 | if (b->loc->next) | |
12094 | { | |
12095 | struct bp_location *loc = b->loc; | |
12096 | int n = 0; | |
12097 | for (; loc; loc = loc->next) | |
12098 | ++n; | |
12099 | printf_filtered (" (%d locations)", n); | |
12100 | } | |
12101 | } | |
12102 | } | |
12103 | ||
5f486660 | 12104 | bp_location::~bp_location () |
348d480f | 12105 | { |
5f486660 | 12106 | xfree (function_name); |
348d480f PA |
12107 | } |
12108 | ||
c1fc2657 | 12109 | /* Destructor for the breakpoint base class. */ |
348d480f | 12110 | |
c1fc2657 | 12111 | breakpoint::~breakpoint () |
348d480f | 12112 | { |
c1fc2657 SM |
12113 | xfree (this->cond_string); |
12114 | xfree (this->extra_string); | |
348d480f PA |
12115 | } |
12116 | ||
2060206e PA |
12117 | static struct bp_location * |
12118 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12119 | { |
5f486660 | 12120 | return new bp_location (self); |
348d480f PA |
12121 | } |
12122 | ||
2060206e PA |
12123 | static void |
12124 | base_breakpoint_re_set (struct breakpoint *b) | |
12125 | { | |
12126 | /* Nothing to re-set. */ | |
12127 | } | |
12128 | ||
12129 | #define internal_error_pure_virtual_called() \ | |
12130 | gdb_assert_not_reached ("pure virtual function called") | |
12131 | ||
12132 | static int | |
12133 | base_breakpoint_insert_location (struct bp_location *bl) | |
12134 | { | |
12135 | internal_error_pure_virtual_called (); | |
12136 | } | |
12137 | ||
12138 | static int | |
73971819 PA |
12139 | base_breakpoint_remove_location (struct bp_location *bl, |
12140 | enum remove_bp_reason reason) | |
2060206e PA |
12141 | { |
12142 | internal_error_pure_virtual_called (); | |
12143 | } | |
12144 | ||
12145 | static int | |
12146 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12147 | const address_space *aspace, |
09ac7c10 TT |
12148 | CORE_ADDR bp_addr, |
12149 | const struct target_waitstatus *ws) | |
2060206e PA |
12150 | { |
12151 | internal_error_pure_virtual_called (); | |
12152 | } | |
12153 | ||
12154 | static void | |
12155 | base_breakpoint_check_status (bpstat bs) | |
12156 | { | |
12157 | /* Always stop. */ | |
12158 | } | |
12159 | ||
12160 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12161 | errors. */ | |
12162 | ||
12163 | static int | |
12164 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12165 | { | |
12166 | internal_error_pure_virtual_called (); | |
12167 | } | |
12168 | ||
12169 | /* A "resources_needed" breakpoint_ops method that just internal | |
12170 | errors. */ | |
12171 | ||
12172 | static int | |
12173 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12174 | { | |
12175 | internal_error_pure_virtual_called (); | |
12176 | } | |
12177 | ||
12178 | static enum print_stop_action | |
12179 | base_breakpoint_print_it (bpstat bs) | |
12180 | { | |
12181 | internal_error_pure_virtual_called (); | |
12182 | } | |
12183 | ||
12184 | static void | |
12185 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12186 | struct ui_out *uiout) | |
12187 | { | |
12188 | /* nothing */ | |
12189 | } | |
12190 | ||
12191 | static void | |
12192 | base_breakpoint_print_mention (struct breakpoint *b) | |
12193 | { | |
12194 | internal_error_pure_virtual_called (); | |
12195 | } | |
12196 | ||
12197 | static void | |
12198 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12199 | { | |
12200 | internal_error_pure_virtual_called (); | |
12201 | } | |
12202 | ||
983af33b | 12203 | static void |
f00aae0f KS |
12204 | base_breakpoint_create_sals_from_location |
12205 | (const struct event_location *location, | |
12206 | struct linespec_result *canonical, | |
12207 | enum bptype type_wanted) | |
983af33b SDJ |
12208 | { |
12209 | internal_error_pure_virtual_called (); | |
12210 | } | |
12211 | ||
12212 | static void | |
12213 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12214 | struct linespec_result *c, | |
e1e01040 PA |
12215 | gdb::unique_xmalloc_ptr<char> cond_string, |
12216 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12217 | enum bptype type_wanted, |
12218 | enum bpdisp disposition, | |
12219 | int thread, | |
12220 | int task, int ignore_count, | |
12221 | const struct breakpoint_ops *o, | |
12222 | int from_tty, int enabled, | |
44f238bb | 12223 | int internal, unsigned flags) |
983af33b SDJ |
12224 | { |
12225 | internal_error_pure_virtual_called (); | |
12226 | } | |
12227 | ||
6c5b2ebe | 12228 | static std::vector<symtab_and_line> |
f00aae0f KS |
12229 | base_breakpoint_decode_location (struct breakpoint *b, |
12230 | const struct event_location *location, | |
6c5b2ebe | 12231 | struct program_space *search_pspace) |
983af33b SDJ |
12232 | { |
12233 | internal_error_pure_virtual_called (); | |
12234 | } | |
12235 | ||
ab04a2af TT |
12236 | /* The default 'explains_signal' method. */ |
12237 | ||
47591c29 | 12238 | static int |
427cd150 | 12239 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12240 | { |
47591c29 | 12241 | return 1; |
ab04a2af TT |
12242 | } |
12243 | ||
9d6e6e84 HZ |
12244 | /* The default "after_condition_true" method. */ |
12245 | ||
12246 | static void | |
12247 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12248 | { | |
12249 | /* Nothing to do. */ | |
12250 | } | |
12251 | ||
ab04a2af | 12252 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12253 | { |
2060206e PA |
12254 | base_breakpoint_allocate_location, |
12255 | base_breakpoint_re_set, | |
12256 | base_breakpoint_insert_location, | |
12257 | base_breakpoint_remove_location, | |
12258 | base_breakpoint_breakpoint_hit, | |
12259 | base_breakpoint_check_status, | |
12260 | base_breakpoint_resources_needed, | |
12261 | base_breakpoint_works_in_software_mode, | |
12262 | base_breakpoint_print_it, | |
12263 | NULL, | |
12264 | base_breakpoint_print_one_detail, | |
12265 | base_breakpoint_print_mention, | |
983af33b | 12266 | base_breakpoint_print_recreate, |
5f700d83 | 12267 | base_breakpoint_create_sals_from_location, |
983af33b | 12268 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12269 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12270 | base_breakpoint_explains_signal, |
12271 | base_breakpoint_after_condition_true, | |
2060206e PA |
12272 | }; |
12273 | ||
12274 | /* Default breakpoint_ops methods. */ | |
12275 | ||
12276 | static void | |
348d480f PA |
12277 | bkpt_re_set (struct breakpoint *b) |
12278 | { | |
06edf0c0 | 12279 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12280 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12281 | { |
f00aae0f | 12282 | /* Anything without a location can't be re-set. */ |
348d480f | 12283 | delete_breakpoint (b); |
06edf0c0 | 12284 | return; |
348d480f | 12285 | } |
06edf0c0 PA |
12286 | |
12287 | breakpoint_re_set_default (b); | |
348d480f PA |
12288 | } |
12289 | ||
2060206e | 12290 | static int |
348d480f PA |
12291 | bkpt_insert_location (struct bp_location *bl) |
12292 | { | |
cd6c3b4f YQ |
12293 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12294 | ||
579c6ad9 | 12295 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12296 | bl->target_info.placed_address = addr; |
12297 | ||
348d480f | 12298 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12299 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12300 | else |
7c16b83e | 12301 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12302 | } |
12303 | ||
2060206e | 12304 | static int |
73971819 | 12305 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12306 | { |
12307 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12308 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12309 | else | |
73971819 | 12310 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12311 | } |
12312 | ||
2060206e | 12313 | static int |
348d480f | 12314 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12315 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12316 | const struct target_waitstatus *ws) |
348d480f | 12317 | { |
09ac7c10 | 12318 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12319 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12320 | return 0; |
12321 | ||
348d480f PA |
12322 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12323 | aspace, bp_addr)) | |
12324 | return 0; | |
12325 | ||
12326 | if (overlay_debugging /* unmapped overlay section */ | |
12327 | && section_is_overlay (bl->section) | |
12328 | && !section_is_mapped (bl->section)) | |
12329 | return 0; | |
12330 | ||
12331 | return 1; | |
12332 | } | |
12333 | ||
cd1608cc PA |
12334 | static int |
12335 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12336 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12337 | const struct target_waitstatus *ws) |
12338 | { | |
12339 | if (dprintf_style == dprintf_style_agent | |
12340 | && target_can_run_breakpoint_commands ()) | |
12341 | { | |
12342 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12343 | for this address it must be for a breakpoint that happens to | |
12344 | be set at the same address. */ | |
12345 | return 0; | |
12346 | } | |
12347 | ||
12348 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12349 | } | |
12350 | ||
2060206e | 12351 | static int |
348d480f PA |
12352 | bkpt_resources_needed (const struct bp_location *bl) |
12353 | { | |
12354 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12355 | ||
12356 | return 1; | |
12357 | } | |
12358 | ||
2060206e | 12359 | static enum print_stop_action |
348d480f PA |
12360 | bkpt_print_it (bpstat bs) |
12361 | { | |
348d480f PA |
12362 | struct breakpoint *b; |
12363 | const struct bp_location *bl; | |
001c8c33 | 12364 | int bp_temp; |
79a45e25 | 12365 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12366 | |
12367 | gdb_assert (bs->bp_location_at != NULL); | |
12368 | ||
12369 | bl = bs->bp_location_at; | |
12370 | b = bs->breakpoint_at; | |
12371 | ||
001c8c33 PA |
12372 | bp_temp = b->disposition == disp_del; |
12373 | if (bl->address != bl->requested_address) | |
12374 | breakpoint_adjustment_warning (bl->requested_address, | |
12375 | bl->address, | |
12376 | b->number, 1); | |
12377 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12378 | maybe_print_thread_hit_breakpoint (uiout); |
12379 | ||
112e8700 | 12380 | if (uiout->is_mi_like_p ()) |
348d480f | 12381 | { |
112e8700 | 12382 | uiout->field_string ("reason", |
001c8c33 | 12383 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12384 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12385 | } |
6a831f06 PA |
12386 | if (bp_temp) |
12387 | uiout->message ("Temporary breakpoint %pF, ", | |
12388 | signed_field ("bkptno", b->number)); | |
12389 | else | |
12390 | uiout->message ("Breakpoint %pF, ", | |
12391 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12392 | |
001c8c33 | 12393 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12394 | } |
12395 | ||
2060206e | 12396 | static void |
06edf0c0 PA |
12397 | bkpt_print_mention (struct breakpoint *b) |
12398 | { | |
112e8700 | 12399 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12400 | return; |
12401 | ||
12402 | switch (b->type) | |
12403 | { | |
12404 | case bp_breakpoint: | |
12405 | case bp_gnu_ifunc_resolver: | |
12406 | if (b->disposition == disp_del) | |
12407 | printf_filtered (_("Temporary breakpoint")); | |
12408 | else | |
12409 | printf_filtered (_("Breakpoint")); | |
12410 | printf_filtered (_(" %d"), b->number); | |
12411 | if (b->type == bp_gnu_ifunc_resolver) | |
12412 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12413 | break; | |
12414 | case bp_hardware_breakpoint: | |
12415 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12416 | break; | |
e7e0cddf SS |
12417 | case bp_dprintf: |
12418 | printf_filtered (_("Dprintf %d"), b->number); | |
12419 | break; | |
06edf0c0 PA |
12420 | } |
12421 | ||
12422 | say_where (b); | |
12423 | } | |
12424 | ||
2060206e | 12425 | static void |
06edf0c0 PA |
12426 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12427 | { | |
12428 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12429 | fprintf_unfiltered (fp, "tbreak"); | |
12430 | else if (tp->type == bp_breakpoint) | |
12431 | fprintf_unfiltered (fp, "break"); | |
12432 | else if (tp->type == bp_hardware_breakpoint | |
12433 | && tp->disposition == disp_del) | |
12434 | fprintf_unfiltered (fp, "thbreak"); | |
12435 | else if (tp->type == bp_hardware_breakpoint) | |
12436 | fprintf_unfiltered (fp, "hbreak"); | |
12437 | else | |
12438 | internal_error (__FILE__, __LINE__, | |
12439 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12440 | ||
f00aae0f | 12441 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12442 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12443 | |
12444 | /* Print out extra_string if this breakpoint is pending. It might | |
12445 | contain, for example, conditions that were set by the user. */ | |
12446 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12447 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12448 | ||
dd11a36c | 12449 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12450 | } |
12451 | ||
983af33b | 12452 | static void |
f00aae0f KS |
12453 | bkpt_create_sals_from_location (const struct event_location *location, |
12454 | struct linespec_result *canonical, | |
12455 | enum bptype type_wanted) | |
983af33b | 12456 | { |
f00aae0f | 12457 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12458 | } |
12459 | ||
12460 | static void | |
12461 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12462 | struct linespec_result *canonical, | |
e1e01040 PA |
12463 | gdb::unique_xmalloc_ptr<char> cond_string, |
12464 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12465 | enum bptype type_wanted, |
12466 | enum bpdisp disposition, | |
12467 | int thread, | |
12468 | int task, int ignore_count, | |
12469 | const struct breakpoint_ops *ops, | |
12470 | int from_tty, int enabled, | |
44f238bb | 12471 | int internal, unsigned flags) |
983af33b | 12472 | { |
023fa29b | 12473 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12474 | std::move (cond_string), |
12475 | std::move (extra_string), | |
e7e0cddf | 12476 | type_wanted, |
983af33b SDJ |
12477 | disposition, thread, task, |
12478 | ignore_count, ops, from_tty, | |
44f238bb | 12479 | enabled, internal, flags); |
983af33b SDJ |
12480 | } |
12481 | ||
6c5b2ebe | 12482 | static std::vector<symtab_and_line> |
f00aae0f KS |
12483 | bkpt_decode_location (struct breakpoint *b, |
12484 | const struct event_location *location, | |
6c5b2ebe | 12485 | struct program_space *search_pspace) |
983af33b | 12486 | { |
6c5b2ebe | 12487 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12488 | } |
12489 | ||
06edf0c0 PA |
12490 | /* Virtual table for internal breakpoints. */ |
12491 | ||
12492 | static void | |
12493 | internal_bkpt_re_set (struct breakpoint *b) | |
12494 | { | |
12495 | switch (b->type) | |
12496 | { | |
12497 | /* Delete overlay event and longjmp master breakpoints; they | |
12498 | will be reset later by breakpoint_re_set. */ | |
12499 | case bp_overlay_event: | |
12500 | case bp_longjmp_master: | |
12501 | case bp_std_terminate_master: | |
12502 | case bp_exception_master: | |
12503 | delete_breakpoint (b); | |
12504 | break; | |
12505 | ||
12506 | /* This breakpoint is special, it's set up when the inferior | |
12507 | starts and we really don't want to touch it. */ | |
12508 | case bp_shlib_event: | |
12509 | ||
12510 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12511 | it is set up, we do not want to touch it. */ | |
12512 | case bp_thread_event: | |
12513 | break; | |
12514 | } | |
12515 | } | |
12516 | ||
12517 | static void | |
12518 | internal_bkpt_check_status (bpstat bs) | |
12519 | { | |
a9b3a50f PA |
12520 | if (bs->breakpoint_at->type == bp_shlib_event) |
12521 | { | |
12522 | /* If requested, stop when the dynamic linker notifies GDB of | |
12523 | events. This allows the user to get control and place | |
12524 | breakpoints in initializer routines for dynamically loaded | |
12525 | objects (among other things). */ | |
12526 | bs->stop = stop_on_solib_events; | |
12527 | bs->print = stop_on_solib_events; | |
12528 | } | |
12529 | else | |
12530 | bs->stop = 0; | |
06edf0c0 PA |
12531 | } |
12532 | ||
12533 | static enum print_stop_action | |
12534 | internal_bkpt_print_it (bpstat bs) | |
12535 | { | |
06edf0c0 | 12536 | struct breakpoint *b; |
06edf0c0 | 12537 | |
06edf0c0 PA |
12538 | b = bs->breakpoint_at; |
12539 | ||
06edf0c0 PA |
12540 | switch (b->type) |
12541 | { | |
348d480f PA |
12542 | case bp_shlib_event: |
12543 | /* Did we stop because the user set the stop_on_solib_events | |
12544 | variable? (If so, we report this as a generic, "Stopped due | |
12545 | to shlib event" message.) */ | |
edcc5120 | 12546 | print_solib_event (0); |
348d480f PA |
12547 | break; |
12548 | ||
12549 | case bp_thread_event: | |
12550 | /* Not sure how we will get here. | |
12551 | GDB should not stop for these breakpoints. */ | |
12552 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12553 | break; |
12554 | ||
12555 | case bp_overlay_event: | |
12556 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12557 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12558 | break; |
12559 | ||
12560 | case bp_longjmp_master: | |
12561 | /* These should never be enabled. */ | |
12562 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12563 | break; |
12564 | ||
12565 | case bp_std_terminate_master: | |
12566 | /* These should never be enabled. */ | |
12567 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12568 | "gdb should not stop!\n")); | |
348d480f PA |
12569 | break; |
12570 | ||
12571 | case bp_exception_master: | |
12572 | /* These should never be enabled. */ | |
12573 | printf_filtered (_("Exception Master Breakpoint: " | |
12574 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12575 | break; |
12576 | } | |
12577 | ||
001c8c33 | 12578 | return PRINT_NOTHING; |
06edf0c0 PA |
12579 | } |
12580 | ||
12581 | static void | |
12582 | internal_bkpt_print_mention (struct breakpoint *b) | |
12583 | { | |
12584 | /* Nothing to mention. These breakpoints are internal. */ | |
12585 | } | |
12586 | ||
06edf0c0 PA |
12587 | /* Virtual table for momentary breakpoints */ |
12588 | ||
12589 | static void | |
12590 | momentary_bkpt_re_set (struct breakpoint *b) | |
12591 | { | |
12592 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12593 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12594 | Otherwise these should have been blown away via the cleanup chain |
12595 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12596 | } | |
12597 | ||
12598 | static void | |
12599 | momentary_bkpt_check_status (bpstat bs) | |
12600 | { | |
12601 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12602 | } | |
12603 | ||
12604 | static enum print_stop_action | |
12605 | momentary_bkpt_print_it (bpstat bs) | |
12606 | { | |
001c8c33 | 12607 | return PRINT_UNKNOWN; |
348d480f PA |
12608 | } |
12609 | ||
06edf0c0 PA |
12610 | static void |
12611 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12612 | { |
06edf0c0 | 12613 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12614 | } |
12615 | ||
e2e4d78b JK |
12616 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12617 | ||
12618 | It gets cleared already on the removal of the first one of such placed | |
12619 | breakpoints. This is OK as they get all removed altogether. */ | |
12620 | ||
c1fc2657 | 12621 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12622 | { |
c1fc2657 | 12623 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12624 | |
c1fc2657 | 12625 | if (tp != NULL) |
e2e4d78b | 12626 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12627 | } |
12628 | ||
55aa24fb SDJ |
12629 | /* Specific methods for probe breakpoints. */ |
12630 | ||
12631 | static int | |
12632 | bkpt_probe_insert_location (struct bp_location *bl) | |
12633 | { | |
12634 | int v = bkpt_insert_location (bl); | |
12635 | ||
12636 | if (v == 0) | |
12637 | { | |
12638 | /* The insertion was successful, now let's set the probe's semaphore | |
12639 | if needed. */ | |
935676c9 | 12640 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12641 | } |
12642 | ||
12643 | return v; | |
12644 | } | |
12645 | ||
12646 | static int | |
73971819 PA |
12647 | bkpt_probe_remove_location (struct bp_location *bl, |
12648 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12649 | { |
12650 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12651 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12652 | |
73971819 | 12653 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12654 | } |
12655 | ||
12656 | static void | |
f00aae0f | 12657 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12658 | struct linespec_result *canonical, |
f00aae0f | 12659 | enum bptype type_wanted) |
55aa24fb SDJ |
12660 | { |
12661 | struct linespec_sals lsal; | |
12662 | ||
c2f4122d | 12663 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12664 | lsal.canonical |
12665 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12666 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12667 | } |
12668 | ||
6c5b2ebe | 12669 | static std::vector<symtab_and_line> |
f00aae0f KS |
12670 | bkpt_probe_decode_location (struct breakpoint *b, |
12671 | const struct event_location *location, | |
6c5b2ebe | 12672 | struct program_space *search_pspace) |
55aa24fb | 12673 | { |
6c5b2ebe PA |
12674 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12675 | if (sals.empty ()) | |
55aa24fb | 12676 | error (_("probe not found")); |
6c5b2ebe | 12677 | return sals; |
55aa24fb SDJ |
12678 | } |
12679 | ||
348d480f | 12680 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12681 | |
348d480f PA |
12682 | static void |
12683 | tracepoint_re_set (struct breakpoint *b) | |
12684 | { | |
12685 | breakpoint_re_set_default (b); | |
12686 | } | |
876fa593 | 12687 | |
348d480f PA |
12688 | static int |
12689 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12690 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12691 | const struct target_waitstatus *ws) |
348d480f PA |
12692 | { |
12693 | /* By definition, the inferior does not report stops at | |
12694 | tracepoints. */ | |
12695 | return 0; | |
74960c60 VP |
12696 | } |
12697 | ||
12698 | static void | |
348d480f PA |
12699 | tracepoint_print_one_detail (const struct breakpoint *self, |
12700 | struct ui_out *uiout) | |
74960c60 | 12701 | { |
d9b3f62e | 12702 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12703 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12704 | { |
12705 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12706 | |
6a831f06 PA |
12707 | uiout->message ("\tmarker id is %pF\n", |
12708 | string_field ("static-tracepoint-marker-string-id", | |
12709 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12710 | } |
0d381245 VP |
12711 | } |
12712 | ||
a474d7c2 | 12713 | static void |
348d480f | 12714 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12715 | { |
112e8700 | 12716 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12717 | return; |
cc59ec59 | 12718 | |
348d480f PA |
12719 | switch (b->type) |
12720 | { | |
12721 | case bp_tracepoint: | |
12722 | printf_filtered (_("Tracepoint")); | |
12723 | printf_filtered (_(" %d"), b->number); | |
12724 | break; | |
12725 | case bp_fast_tracepoint: | |
12726 | printf_filtered (_("Fast tracepoint")); | |
12727 | printf_filtered (_(" %d"), b->number); | |
12728 | break; | |
12729 | case bp_static_tracepoint: | |
12730 | printf_filtered (_("Static tracepoint")); | |
12731 | printf_filtered (_(" %d"), b->number); | |
12732 | break; | |
12733 | default: | |
12734 | internal_error (__FILE__, __LINE__, | |
12735 | _("unhandled tracepoint type %d"), (int) b->type); | |
12736 | } | |
12737 | ||
12738 | say_where (b); | |
a474d7c2 PA |
12739 | } |
12740 | ||
348d480f | 12741 | static void |
d9b3f62e | 12742 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12743 | { |
d9b3f62e PA |
12744 | struct tracepoint *tp = (struct tracepoint *) self; |
12745 | ||
12746 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12747 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12748 | else if (self->type == bp_static_tracepoint) |
348d480f | 12749 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12750 | else if (self->type == bp_tracepoint) |
348d480f PA |
12751 | fprintf_unfiltered (fp, "trace"); |
12752 | else | |
12753 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12754 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12755 | |
f00aae0f | 12756 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12757 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12758 | print_recreate_thread (self, fp); |
12759 | ||
12760 | if (tp->pass_count) | |
12761 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12762 | } |
12763 | ||
983af33b | 12764 | static void |
f00aae0f KS |
12765 | tracepoint_create_sals_from_location (const struct event_location *location, |
12766 | struct linespec_result *canonical, | |
12767 | enum bptype type_wanted) | |
983af33b | 12768 | { |
f00aae0f | 12769 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12770 | } |
12771 | ||
12772 | static void | |
12773 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12774 | struct linespec_result *canonical, | |
e1e01040 PA |
12775 | gdb::unique_xmalloc_ptr<char> cond_string, |
12776 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12777 | enum bptype type_wanted, |
12778 | enum bpdisp disposition, | |
12779 | int thread, | |
12780 | int task, int ignore_count, | |
12781 | const struct breakpoint_ops *ops, | |
12782 | int from_tty, int enabled, | |
44f238bb | 12783 | int internal, unsigned flags) |
983af33b | 12784 | { |
023fa29b | 12785 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12786 | std::move (cond_string), |
12787 | std::move (extra_string), | |
e7e0cddf | 12788 | type_wanted, |
983af33b SDJ |
12789 | disposition, thread, task, |
12790 | ignore_count, ops, from_tty, | |
44f238bb | 12791 | enabled, internal, flags); |
983af33b SDJ |
12792 | } |
12793 | ||
6c5b2ebe | 12794 | static std::vector<symtab_and_line> |
f00aae0f KS |
12795 | tracepoint_decode_location (struct breakpoint *b, |
12796 | const struct event_location *location, | |
6c5b2ebe | 12797 | struct program_space *search_pspace) |
983af33b | 12798 | { |
6c5b2ebe | 12799 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12800 | } |
12801 | ||
2060206e | 12802 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12803 | |
bac7c5cf | 12804 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12805 | |
12806 | static void | |
f00aae0f KS |
12807 | tracepoint_probe_create_sals_from_location |
12808 | (const struct event_location *location, | |
12809 | struct linespec_result *canonical, | |
12810 | enum bptype type_wanted) | |
55aa24fb SDJ |
12811 | { |
12812 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12813 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12814 | } |
12815 | ||
6c5b2ebe | 12816 | static std::vector<symtab_and_line> |
f00aae0f KS |
12817 | tracepoint_probe_decode_location (struct breakpoint *b, |
12818 | const struct event_location *location, | |
6c5b2ebe | 12819 | struct program_space *search_pspace) |
55aa24fb SDJ |
12820 | { |
12821 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12822 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12823 | } |
12824 | ||
5c2b4418 HZ |
12825 | /* Dprintf breakpoint_ops methods. */ |
12826 | ||
12827 | static void | |
12828 | dprintf_re_set (struct breakpoint *b) | |
12829 | { | |
12830 | breakpoint_re_set_default (b); | |
12831 | ||
f00aae0f KS |
12832 | /* extra_string should never be non-NULL for dprintf. */ |
12833 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12834 | |
12835 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12836 | 2 - create a dprintf, which resolves fine. | |
12837 | 3 - disconnect from target 1 | |
12838 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12839 | ||
12840 | After steps #3/#4, you'll want the dprintf command list to | |
12841 | be updated, because target 1 and 2 may well return different | |
12842 | answers for target_can_run_breakpoint_commands(). | |
12843 | Given absence of finer grained resetting, we get to do | |
12844 | it all the time. */ | |
12845 | if (b->extra_string != NULL) | |
12846 | update_dprintf_command_list (b); | |
12847 | } | |
12848 | ||
2d9442cc HZ |
12849 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12850 | ||
12851 | static void | |
12852 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12853 | { | |
f00aae0f | 12854 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12855 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12856 | tp->extra_string); |
12857 | print_recreate_thread (tp, fp); | |
12858 | } | |
12859 | ||
9d6e6e84 HZ |
12860 | /* Implement the "after_condition_true" breakpoint_ops method for |
12861 | dprintf. | |
12862 | ||
12863 | dprintf's are implemented with regular commands in their command | |
12864 | list, but we run the commands here instead of before presenting the | |
12865 | stop to the user, as dprintf's don't actually cause a stop. This | |
12866 | also makes it so that the commands of multiple dprintfs at the same | |
12867 | address are all handled. */ | |
12868 | ||
12869 | static void | |
12870 | dprintf_after_condition_true (struct bpstats *bs) | |
12871 | { | |
04afa70c | 12872 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12873 | struct bpstats *tmp_bs_p = &tmp_bs; |
12874 | ||
12875 | /* dprintf's never cause a stop. This wasn't set in the | |
12876 | check_status hook instead because that would make the dprintf's | |
12877 | condition not be evaluated. */ | |
12878 | bs->stop = 0; | |
12879 | ||
12880 | /* Run the command list here. Take ownership of it instead of | |
12881 | copying. We never want these commands to run later in | |
12882 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12883 | be set at same address as this dprintf, or even if running the | |
12884 | commands here throws. */ | |
12885 | tmp_bs.commands = bs->commands; | |
12886 | bs->commands = NULL; | |
9d6e6e84 HZ |
12887 | |
12888 | bpstat_do_actions_1 (&tmp_bs_p); | |
12889 | ||
12890 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12891 | bpstat_do_actions_1 may return early without processing the whole | |
12892 | list. */ | |
9d6e6e84 HZ |
12893 | } |
12894 | ||
983af33b SDJ |
12895 | /* The breakpoint_ops structure to be used on static tracepoints with |
12896 | markers (`-m'). */ | |
12897 | ||
12898 | static void | |
f00aae0f | 12899 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12900 | struct linespec_result *canonical, |
f00aae0f | 12901 | enum bptype type_wanted) |
983af33b SDJ |
12902 | { |
12903 | struct linespec_sals lsal; | |
f00aae0f | 12904 | const char *arg_start, *arg; |
983af33b | 12905 | |
a20714ff | 12906 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12907 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12908 | |
f2fc3015 TT |
12909 | std::string str (arg_start, arg - arg_start); |
12910 | const char *ptr = str.c_str (); | |
a20714ff PA |
12911 | canonical->location |
12912 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12913 | |
8e9e35b1 TT |
12914 | lsal.canonical |
12915 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12916 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12917 | } |
12918 | ||
12919 | static void | |
12920 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12921 | struct linespec_result *canonical, | |
e1e01040 PA |
12922 | gdb::unique_xmalloc_ptr<char> cond_string, |
12923 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12924 | enum bptype type_wanted, |
12925 | enum bpdisp disposition, | |
12926 | int thread, | |
12927 | int task, int ignore_count, | |
12928 | const struct breakpoint_ops *ops, | |
12929 | int from_tty, int enabled, | |
44f238bb | 12930 | int internal, unsigned flags) |
983af33b | 12931 | { |
6c5b2ebe | 12932 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12933 | |
12934 | /* If the user is creating a static tracepoint by marker id | |
12935 | (strace -m MARKER_ID), then store the sals index, so that | |
12936 | breakpoint_re_set can try to match up which of the newly | |
12937 | found markers corresponds to this one, and, don't try to | |
12938 | expand multiple locations for each sal, given than SALS | |
12939 | already should contain all sals for MARKER_ID. */ | |
12940 | ||
6c5b2ebe | 12941 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12942 | { |
6c5b2ebe PA |
12943 | event_location_up location |
12944 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12945 | |
b270e6f9 | 12946 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 12947 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 12948 | std::move (location), NULL, |
e1e01040 PA |
12949 | std::move (cond_string), |
12950 | std::move (extra_string), | |
e7e0cddf | 12951 | type_wanted, disposition, |
983af33b | 12952 | thread, task, ignore_count, ops, |
44f238bb | 12953 | from_tty, enabled, internal, flags, |
983af33b SDJ |
12954 | canonical->special_display); |
12955 | /* Given that its possible to have multiple markers with | |
12956 | the same string id, if the user is creating a static | |
12957 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12958 | store the sals index, so that breakpoint_re_set can | |
12959 | try to match up which of the newly found markers | |
12960 | corresponds to this one */ | |
12961 | tp->static_trace_marker_id_idx = i; | |
12962 | ||
b270e6f9 | 12963 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12964 | } |
12965 | } | |
12966 | ||
6c5b2ebe | 12967 | static std::vector<symtab_and_line> |
f00aae0f KS |
12968 | strace_marker_decode_location (struct breakpoint *b, |
12969 | const struct event_location *location, | |
6c5b2ebe | 12970 | struct program_space *search_pspace) |
983af33b SDJ |
12971 | { |
12972 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 12973 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 12974 | |
6c5b2ebe PA |
12975 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
12976 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 12977 | { |
6c5b2ebe PA |
12978 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
12979 | sals.resize (1); | |
12980 | return sals; | |
983af33b SDJ |
12981 | } |
12982 | else | |
5d9310c4 | 12983 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
12984 | } |
12985 | ||
12986 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
12987 | ||
12988 | static int | |
12989 | strace_marker_p (struct breakpoint *b) | |
12990 | { | |
12991 | return b->ops == &strace_marker_breakpoint_ops; | |
12992 | } | |
12993 | ||
53a5351d | 12994 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12995 | structures. */ |
c906108c SS |
12996 | |
12997 | void | |
fba45db2 | 12998 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12999 | { |
52f0bd74 | 13000 | struct breakpoint *b; |
c906108c | 13001 | |
8a3fe4f8 | 13002 | gdb_assert (bpt != NULL); |
c906108c | 13003 | |
4a64f543 MS |
13004 | /* Has this bp already been deleted? This can happen because |
13005 | multiple lists can hold pointers to bp's. bpstat lists are | |
13006 | especial culprits. | |
13007 | ||
13008 | One example of this happening is a watchpoint's scope bp. When | |
13009 | the scope bp triggers, we notice that the watchpoint is out of | |
13010 | scope, and delete it. We also delete its scope bp. But the | |
13011 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13012 | That bpstat is then checked for auto-deleting bp's, which are | |
13013 | deleted. | |
13014 | ||
13015 | A real solution to this problem might involve reference counts in | |
13016 | bp's, and/or giving them pointers back to their referencing | |
13017 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13018 | storage when no more references were extent. A cheaper bandaid | |
13019 | was chosen. */ | |
c906108c SS |
13020 | if (bpt->type == bp_none) |
13021 | return; | |
13022 | ||
4a64f543 MS |
13023 | /* At least avoid this stale reference until the reference counting |
13024 | of breakpoints gets resolved. */ | |
d0fb5eae | 13025 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13026 | { |
d0fb5eae | 13027 | struct breakpoint *related; |
3a5c3e22 | 13028 | struct watchpoint *w; |
d0fb5eae JK |
13029 | |
13030 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13031 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13032 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13033 | w = (struct watchpoint *) bpt; |
13034 | else | |
13035 | w = NULL; | |
13036 | if (w != NULL) | |
13037 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13038 | |
13039 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13040 | for (related = bpt; related->related_breakpoint != bpt; | |
13041 | related = related->related_breakpoint); | |
13042 | related->related_breakpoint = bpt->related_breakpoint; | |
13043 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13044 | } |
13045 | ||
a9634178 TJB |
13046 | /* watch_command_1 creates a watchpoint but only sets its number if |
13047 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13048 | a problem in that process, we'll be asked to delete the half-created | |
13049 | watchpoint. In that case, don't announce the deletion. */ | |
13050 | if (bpt->number) | |
76727919 | 13051 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13052 | |
c906108c SS |
13053 | if (breakpoint_chain == bpt) |
13054 | breakpoint_chain = bpt->next; | |
13055 | ||
c906108c SS |
13056 | ALL_BREAKPOINTS (b) |
13057 | if (b->next == bpt) | |
c5aa993b JM |
13058 | { |
13059 | b->next = bpt->next; | |
13060 | break; | |
13061 | } | |
c906108c | 13062 | |
f431efe5 PA |
13063 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13064 | been freed. */ | |
13065 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13066 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13067 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13068 | commands are associated with the bpstat; if we remove it here, | |
13069 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13070 | event-top.c won't do anything, and temporary breakpoints with | |
13071 | commands won't work. */ | |
13072 | ||
13073 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13074 | ||
4a64f543 MS |
13075 | /* Now that breakpoint is removed from breakpoint list, update the |
13076 | global location list. This will remove locations that used to | |
13077 | belong to this breakpoint. Do this before freeing the breakpoint | |
13078 | itself, since remove_breakpoint looks at location's owner. It | |
13079 | might be better design to have location completely | |
13080 | self-contained, but it's not the case now. */ | |
44702360 | 13081 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13082 | |
4a64f543 MS |
13083 | /* On the chance that someone will soon try again to delete this |
13084 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13085 | bpt->type = bp_none; |
4d01a485 | 13086 | delete bpt; |
c906108c SS |
13087 | } |
13088 | ||
51be5b68 PA |
13089 | /* Iterator function to call a user-provided callback function once |
13090 | for each of B and its related breakpoints. */ | |
13091 | ||
13092 | static void | |
13093 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13094 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13095 | { |
13096 | struct breakpoint *related; | |
13097 | ||
13098 | related = b; | |
13099 | do | |
13100 | { | |
13101 | struct breakpoint *next; | |
13102 | ||
13103 | /* FUNCTION may delete RELATED. */ | |
13104 | next = related->related_breakpoint; | |
13105 | ||
13106 | if (next == related) | |
13107 | { | |
13108 | /* RELATED is the last ring entry. */ | |
48649e1b | 13109 | function (related); |
51be5b68 PA |
13110 | |
13111 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13112 | B. There's nothing left to do anyway, so just break | |
13113 | out. */ | |
13114 | break; | |
13115 | } | |
13116 | else | |
48649e1b | 13117 | function (related); |
51be5b68 PA |
13118 | |
13119 | related = next; | |
13120 | } | |
13121 | while (related != b); | |
13122 | } | |
95a42b64 | 13123 | |
4495129a | 13124 | static void |
981a3fb3 | 13125 | delete_command (const char *arg, int from_tty) |
c906108c | 13126 | { |
35df4500 | 13127 | struct breakpoint *b, *b_tmp; |
c906108c | 13128 | |
ea9365bb TT |
13129 | dont_repeat (); |
13130 | ||
c906108c SS |
13131 | if (arg == 0) |
13132 | { | |
13133 | int breaks_to_delete = 0; | |
13134 | ||
46c6471b PA |
13135 | /* Delete all breakpoints if no argument. Do not delete |
13136 | internal breakpoints, these have to be deleted with an | |
13137 | explicit breakpoint number argument. */ | |
c5aa993b | 13138 | ALL_BREAKPOINTS (b) |
46c6471b | 13139 | if (user_breakpoint_p (b)) |
973d738b DJ |
13140 | { |
13141 | breaks_to_delete = 1; | |
13142 | break; | |
13143 | } | |
c906108c SS |
13144 | |
13145 | /* Ask user only if there are some breakpoints to delete. */ | |
13146 | if (!from_tty | |
e2e0b3e5 | 13147 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13148 | { |
35df4500 | 13149 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13150 | if (user_breakpoint_p (b)) |
c5aa993b | 13151 | delete_breakpoint (b); |
c906108c SS |
13152 | } |
13153 | } | |
13154 | else | |
48649e1b | 13155 | map_breakpoint_numbers |
b926417a | 13156 | (arg, [&] (breakpoint *br) |
48649e1b | 13157 | { |
b926417a | 13158 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13159 | }); |
c906108c SS |
13160 | } |
13161 | ||
c2f4122d PA |
13162 | /* Return true if all locations of B bound to PSPACE are pending. If |
13163 | PSPACE is NULL, all locations of all program spaces are | |
13164 | considered. */ | |
13165 | ||
0d381245 | 13166 | static int |
c2f4122d | 13167 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13168 | { |
c2f4122d PA |
13169 | struct bp_location *loc; |
13170 | ||
13171 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13172 | if ((pspace == NULL | |
13173 | || loc->pspace == pspace) | |
13174 | && !loc->shlib_disabled | |
8645ff69 | 13175 | && !loc->pspace->executing_startup) |
0d381245 VP |
13176 | return 0; |
13177 | return 1; | |
fe3f5fa8 VP |
13178 | } |
13179 | ||
776592bf DE |
13180 | /* Subroutine of update_breakpoint_locations to simplify it. |
13181 | Return non-zero if multiple fns in list LOC have the same name. | |
13182 | Null names are ignored. */ | |
13183 | ||
13184 | static int | |
13185 | ambiguous_names_p (struct bp_location *loc) | |
13186 | { | |
13187 | struct bp_location *l; | |
459a2e4c TT |
13188 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13189 | xcalloc, xfree); | |
776592bf DE |
13190 | |
13191 | for (l = loc; l != NULL; l = l->next) | |
13192 | { | |
13193 | const char **slot; | |
13194 | const char *name = l->function_name; | |
13195 | ||
13196 | /* Allow for some names to be NULL, ignore them. */ | |
13197 | if (name == NULL) | |
13198 | continue; | |
13199 | ||
13200 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13201 | INSERT); | |
4a64f543 MS |
13202 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13203 | returns NULL. */ | |
776592bf DE |
13204 | if (*slot != NULL) |
13205 | { | |
13206 | htab_delete (htab); | |
13207 | return 1; | |
13208 | } | |
13209 | *slot = name; | |
13210 | } | |
13211 | ||
13212 | htab_delete (htab); | |
13213 | return 0; | |
13214 | } | |
13215 | ||
0fb4aa4b PA |
13216 | /* When symbols change, it probably means the sources changed as well, |
13217 | and it might mean the static tracepoint markers are no longer at | |
13218 | the same address or line numbers they used to be at last we | |
13219 | checked. Losing your static tracepoints whenever you rebuild is | |
13220 | undesirable. This function tries to resync/rematch gdb static | |
13221 | tracepoints with the markers on the target, for static tracepoints | |
13222 | that have not been set by marker id. Static tracepoint that have | |
13223 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13224 | The heuristic is: | |
13225 | ||
13226 | 1) For a tracepoint set at a specific address, look for a marker at | |
13227 | the old PC. If one is found there, assume to be the same marker. | |
13228 | If the name / string id of the marker found is different from the | |
13229 | previous known name, assume that means the user renamed the marker | |
13230 | in the sources, and output a warning. | |
13231 | ||
13232 | 2) For a tracepoint set at a given line number, look for a marker | |
13233 | at the new address of the old line number. If one is found there, | |
13234 | assume to be the same marker. If the name / string id of the | |
13235 | marker found is different from the previous known name, assume that | |
13236 | means the user renamed the marker in the sources, and output a | |
13237 | warning. | |
13238 | ||
13239 | 3) If a marker is no longer found at the same address or line, it | |
13240 | may mean the marker no longer exists. But it may also just mean | |
13241 | the code changed a bit. Maybe the user added a few lines of code | |
13242 | that made the marker move up or down (in line number terms). Ask | |
13243 | the target for info about the marker with the string id as we knew | |
13244 | it. If found, update line number and address in the matching | |
13245 | static tracepoint. This will get confused if there's more than one | |
13246 | marker with the same ID (possible in UST, although unadvised | |
13247 | precisely because it confuses tools). */ | |
13248 | ||
13249 | static struct symtab_and_line | |
13250 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13251 | { | |
d9b3f62e | 13252 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13253 | struct static_tracepoint_marker marker; |
13254 | CORE_ADDR pc; | |
0fb4aa4b PA |
13255 | |
13256 | pc = sal.pc; | |
13257 | if (sal.line) | |
13258 | find_line_pc (sal.symtab, sal.line, &pc); | |
13259 | ||
13260 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13261 | { | |
5d9310c4 | 13262 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13263 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13264 | b->number, tp->static_trace_marker_id.c_str (), |
13265 | marker.str_id.c_str ()); | |
0fb4aa4b | 13266 | |
5d9310c4 | 13267 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13268 | |
13269 | return sal; | |
13270 | } | |
13271 | ||
13272 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13273 | by string ID. */ | |
13274 | if (!sal.explicit_pc | |
13275 | && sal.line != 0 | |
13276 | && sal.symtab != NULL | |
5d9310c4 | 13277 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13278 | { |
5d9310c4 SM |
13279 | std::vector<static_tracepoint_marker> markers |
13280 | = target_static_tracepoint_markers_by_strid | |
13281 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13282 | |
5d9310c4 | 13283 | if (!markers.empty ()) |
0fb4aa4b | 13284 | { |
0fb4aa4b | 13285 | struct symbol *sym; |
80e1d417 | 13286 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13287 | struct ui_out *uiout = current_uiout; |
67994074 | 13288 | struct explicit_location explicit_loc; |
0fb4aa4b | 13289 | |
5d9310c4 | 13290 | tpmarker = &markers[0]; |
0fb4aa4b | 13291 | |
5d9310c4 | 13292 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13293 | |
13294 | warning (_("marker for static tracepoint %d (%s) not " | |
13295 | "found at previous line number"), | |
5d9310c4 | 13296 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13297 | |
51abb421 | 13298 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13299 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13300 | uiout->text ("Now in "); |
0fb4aa4b PA |
13301 | if (sym) |
13302 | { | |
987012b8 | 13303 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13304 | function_name_style.style ()); |
112e8700 | 13305 | uiout->text (" at "); |
0fb4aa4b | 13306 | } |
112e8700 | 13307 | uiout->field_string ("file", |
cbe56571 | 13308 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13309 | file_name_style.style ()); |
112e8700 | 13310 | uiout->text (":"); |
0fb4aa4b | 13311 | |
112e8700 | 13312 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13313 | { |
0b0865da | 13314 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13315 | |
112e8700 | 13316 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13317 | } |
13318 | ||
381befee | 13319 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13320 | uiout->text ("\n"); |
0fb4aa4b | 13321 | |
80e1d417 | 13322 | b->loc->line_number = sal2.line; |
2f202fde | 13323 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13324 | |
d28cd78a | 13325 | b->location.reset (NULL); |
67994074 KS |
13326 | initialize_explicit_location (&explicit_loc); |
13327 | explicit_loc.source_filename | |
00e52e53 | 13328 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13329 | explicit_loc.line_offset.offset = b->loc->line_number; |
13330 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13331 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13332 | |
13333 | /* Might be nice to check if function changed, and warn if | |
13334 | so. */ | |
0fb4aa4b PA |
13335 | } |
13336 | } | |
13337 | return sal; | |
13338 | } | |
13339 | ||
8d3788bd VP |
13340 | /* Returns 1 iff locations A and B are sufficiently same that |
13341 | we don't need to report breakpoint as changed. */ | |
13342 | ||
13343 | static int | |
13344 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13345 | { | |
13346 | while (a && b) | |
13347 | { | |
13348 | if (a->address != b->address) | |
13349 | return 0; | |
13350 | ||
13351 | if (a->shlib_disabled != b->shlib_disabled) | |
13352 | return 0; | |
13353 | ||
13354 | if (a->enabled != b->enabled) | |
13355 | return 0; | |
13356 | ||
13357 | a = a->next; | |
13358 | b = b->next; | |
13359 | } | |
13360 | ||
13361 | if ((a == NULL) != (b == NULL)) | |
13362 | return 0; | |
13363 | ||
13364 | return 1; | |
13365 | } | |
13366 | ||
c2f4122d PA |
13367 | /* Split all locations of B that are bound to PSPACE out of B's |
13368 | location list to a separate list and return that list's head. If | |
13369 | PSPACE is NULL, hoist out all locations of B. */ | |
13370 | ||
13371 | static struct bp_location * | |
13372 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13373 | { | |
13374 | struct bp_location head; | |
13375 | struct bp_location *i = b->loc; | |
13376 | struct bp_location **i_link = &b->loc; | |
13377 | struct bp_location *hoisted = &head; | |
13378 | ||
13379 | if (pspace == NULL) | |
13380 | { | |
13381 | i = b->loc; | |
13382 | b->loc = NULL; | |
13383 | return i; | |
13384 | } | |
13385 | ||
13386 | head.next = NULL; | |
13387 | ||
13388 | while (i != NULL) | |
13389 | { | |
13390 | if (i->pspace == pspace) | |
13391 | { | |
13392 | *i_link = i->next; | |
13393 | i->next = NULL; | |
13394 | hoisted->next = i; | |
13395 | hoisted = i; | |
13396 | } | |
13397 | else | |
13398 | i_link = &i->next; | |
13399 | i = *i_link; | |
13400 | } | |
13401 | ||
13402 | return head.next; | |
13403 | } | |
13404 | ||
13405 | /* Create new breakpoint locations for B (a hardware or software | |
13406 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13407 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13408 | FILTER_PSPACE. Locations of other program spaces are left | |
13409 | untouched. */ | |
f1310107 | 13410 | |
0e30163f | 13411 | void |
0d381245 | 13412 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13413 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13414 | gdb::array_view<const symtab_and_line> sals, |
13415 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13416 | { |
c2f4122d | 13417 | struct bp_location *existing_locations; |
0d381245 | 13418 | |
6c5b2ebe | 13419 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13420 | { |
13421 | /* Ranged breakpoints have only one start location and one end | |
13422 | location. */ | |
13423 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13424 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13425 | "multiple locations found\n"), | |
13426 | b->number); | |
13427 | return; | |
13428 | } | |
f1310107 | 13429 | |
4a64f543 MS |
13430 | /* If there's no new locations, and all existing locations are |
13431 | pending, don't do anything. This optimizes the common case where | |
13432 | all locations are in the same shared library, that was unloaded. | |
13433 | We'd like to retain the location, so that when the library is | |
13434 | loaded again, we don't loose the enabled/disabled status of the | |
13435 | individual locations. */ | |
6c5b2ebe | 13436 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13437 | return; |
13438 | ||
c2f4122d | 13439 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13440 | |
6c5b2ebe | 13441 | for (const auto &sal : sals) |
fe3f5fa8 | 13442 | { |
f8eba3c6 TT |
13443 | struct bp_location *new_loc; |
13444 | ||
6c5b2ebe | 13445 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13446 | |
6c5b2ebe | 13447 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13448 | |
0d381245 VP |
13449 | /* Reparse conditions, they might contain references to the |
13450 | old symtab. */ | |
13451 | if (b->cond_string != NULL) | |
13452 | { | |
bbc13ae3 | 13453 | const char *s; |
fe3f5fa8 | 13454 | |
0d381245 | 13455 | s = b->cond_string; |
a70b8144 | 13456 | try |
0d381245 | 13457 | { |
6c5b2ebe PA |
13458 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13459 | block_for_pc (sal.pc), | |
0d381245 VP |
13460 | 0); |
13461 | } | |
230d2906 | 13462 | catch (const gdb_exception_error &e) |
0d381245 | 13463 | { |
3e43a32a MS |
13464 | warning (_("failed to reevaluate condition " |
13465 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13466 | b->number, e.what ()); |
0d381245 VP |
13467 | new_loc->enabled = 0; |
13468 | } | |
13469 | } | |
fe3f5fa8 | 13470 | |
6c5b2ebe | 13471 | if (!sals_end.empty ()) |
f1310107 | 13472 | { |
6c5b2ebe | 13473 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13474 | |
6c5b2ebe | 13475 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13476 | } |
0d381245 | 13477 | } |
fe3f5fa8 | 13478 | |
4a64f543 MS |
13479 | /* If possible, carry over 'disable' status from existing |
13480 | breakpoints. */ | |
0d381245 VP |
13481 | { |
13482 | struct bp_location *e = existing_locations; | |
776592bf DE |
13483 | /* If there are multiple breakpoints with the same function name, |
13484 | e.g. for inline functions, comparing function names won't work. | |
13485 | Instead compare pc addresses; this is just a heuristic as things | |
13486 | may have moved, but in practice it gives the correct answer | |
13487 | often enough until a better solution is found. */ | |
13488 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13489 | ||
0d381245 VP |
13490 | for (; e; e = e->next) |
13491 | { | |
13492 | if (!e->enabled && e->function_name) | |
13493 | { | |
13494 | struct bp_location *l = b->loc; | |
776592bf DE |
13495 | if (have_ambiguous_names) |
13496 | { | |
13497 | for (; l; l = l->next) | |
f1310107 | 13498 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13499 | { |
13500 | l->enabled = 0; | |
13501 | break; | |
13502 | } | |
13503 | } | |
13504 | else | |
13505 | { | |
13506 | for (; l; l = l->next) | |
13507 | if (l->function_name | |
13508 | && strcmp (e->function_name, l->function_name) == 0) | |
13509 | { | |
13510 | l->enabled = 0; | |
13511 | break; | |
13512 | } | |
13513 | } | |
0d381245 VP |
13514 | } |
13515 | } | |
13516 | } | |
fe3f5fa8 | 13517 | |
8d3788bd | 13518 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13519 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13520 | } |
13521 | ||
f00aae0f | 13522 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13523 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13524 | ||
6c5b2ebe | 13525 | static std::vector<symtab_and_line> |
f00aae0f | 13526 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13527 | struct program_space *search_pspace, int *found) |
ef23e705 | 13528 | { |
cc06b668 | 13529 | struct gdb_exception exception; |
ef23e705 | 13530 | |
983af33b | 13531 | gdb_assert (b->ops != NULL); |
ef23e705 | 13532 | |
6c5b2ebe PA |
13533 | std::vector<symtab_and_line> sals; |
13534 | ||
a70b8144 | 13535 | try |
ef23e705 | 13536 | { |
6c5b2ebe | 13537 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13538 | } |
94aeb44b | 13539 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13540 | { |
13541 | int not_found_and_ok = 0; | |
492d29ea | 13542 | |
ef23e705 TJB |
13543 | /* For pending breakpoints, it's expected that parsing will |
13544 | fail until the right shared library is loaded. User has | |
13545 | already told to create pending breakpoints and don't need | |
13546 | extra messages. If breakpoint is in bp_shlib_disabled | |
13547 | state, then user already saw the message about that | |
13548 | breakpoint being disabled, and don't want to see more | |
13549 | errors. */ | |
58438ac1 | 13550 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13551 | && (b->condition_not_parsed |
13552 | || (b->loc != NULL | |
13553 | && search_pspace != NULL | |
13554 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13555 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13556 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13557 | || b->enable_state == bp_disabled)) |
13558 | not_found_and_ok = 1; | |
13559 | ||
13560 | if (!not_found_and_ok) | |
13561 | { | |
13562 | /* We surely don't want to warn about the same breakpoint | |
13563 | 10 times. One solution, implemented here, is disable | |
13564 | the breakpoint on error. Another solution would be to | |
13565 | have separate 'warning emitted' flag. Since this | |
13566 | happens only when a binary has changed, I don't know | |
13567 | which approach is better. */ | |
13568 | b->enable_state = bp_disabled; | |
eedc3f4f | 13569 | throw; |
ef23e705 | 13570 | } |
94aeb44b TT |
13571 | |
13572 | exception = std::move (e); | |
ef23e705 TJB |
13573 | } |
13574 | ||
492d29ea | 13575 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13576 | { |
6c5b2ebe PA |
13577 | for (auto &sal : sals) |
13578 | resolve_sal_pc (&sal); | |
f00aae0f | 13579 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13580 | { |
ed1d1739 KS |
13581 | char *cond_string, *extra_string; |
13582 | int thread, task; | |
ef23e705 | 13583 | |
6c5b2ebe | 13584 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13585 | &cond_string, &thread, &task, |
13586 | &extra_string); | |
f00aae0f | 13587 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13588 | if (cond_string) |
13589 | b->cond_string = cond_string; | |
13590 | b->thread = thread; | |
13591 | b->task = task; | |
e7e0cddf | 13592 | if (extra_string) |
f00aae0f KS |
13593 | { |
13594 | xfree (b->extra_string); | |
13595 | b->extra_string = extra_string; | |
13596 | } | |
ef23e705 TJB |
13597 | b->condition_not_parsed = 0; |
13598 | } | |
13599 | ||
983af33b | 13600 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13601 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13602 | |
58438ac1 TT |
13603 | *found = 1; |
13604 | } | |
13605 | else | |
13606 | *found = 0; | |
ef23e705 TJB |
13607 | |
13608 | return sals; | |
13609 | } | |
13610 | ||
348d480f PA |
13611 | /* The default re_set method, for typical hardware or software |
13612 | breakpoints. Reevaluate the breakpoint and recreate its | |
13613 | locations. */ | |
13614 | ||
13615 | static void | |
28010a5d | 13616 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13617 | { |
c2f4122d | 13618 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13619 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13620 | |
6c5b2ebe PA |
13621 | int found; |
13622 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13623 | filter_pspace, &found); | |
ef23e705 | 13624 | if (found) |
6c5b2ebe | 13625 | expanded = std::move (sals); |
ef23e705 | 13626 | |
f00aae0f | 13627 | if (b->location_range_end != NULL) |
f1310107 | 13628 | { |
6c5b2ebe PA |
13629 | std::vector<symtab_and_line> sals_end |
13630 | = location_to_sals (b, b->location_range_end.get (), | |
13631 | filter_pspace, &found); | |
f1310107 | 13632 | if (found) |
6c5b2ebe | 13633 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13634 | } |
13635 | ||
c2f4122d | 13636 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13637 | } |
13638 | ||
983af33b SDJ |
13639 | /* Default method for creating SALs from an address string. It basically |
13640 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13641 | ||
13642 | static void | |
f00aae0f KS |
13643 | create_sals_from_location_default (const struct event_location *location, |
13644 | struct linespec_result *canonical, | |
13645 | enum bptype type_wanted) | |
983af33b | 13646 | { |
f00aae0f | 13647 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13648 | } |
13649 | ||
13650 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13651 | function for the `create_breakpoints_sal' method of | |
13652 | breakpoint_ops. */ | |
13653 | ||
13654 | static void | |
13655 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13656 | struct linespec_result *canonical, | |
e1e01040 PA |
13657 | gdb::unique_xmalloc_ptr<char> cond_string, |
13658 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13659 | enum bptype type_wanted, |
13660 | enum bpdisp disposition, | |
13661 | int thread, | |
13662 | int task, int ignore_count, | |
13663 | const struct breakpoint_ops *ops, | |
13664 | int from_tty, int enabled, | |
44f238bb | 13665 | int internal, unsigned flags) |
983af33b | 13666 | { |
e1e01040 PA |
13667 | create_breakpoints_sal (gdbarch, canonical, |
13668 | std::move (cond_string), | |
13669 | std::move (extra_string), | |
983af33b SDJ |
13670 | type_wanted, disposition, |
13671 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13672 | enabled, internal, flags); |
983af33b SDJ |
13673 | } |
13674 | ||
13675 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13676 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13677 | |
6c5b2ebe | 13678 | static std::vector<symtab_and_line> |
f00aae0f KS |
13679 | decode_location_default (struct breakpoint *b, |
13680 | const struct event_location *location, | |
6c5b2ebe | 13681 | struct program_space *search_pspace) |
983af33b SDJ |
13682 | { |
13683 | struct linespec_result canonical; | |
13684 | ||
c2f4122d | 13685 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13686 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13687 | b->filter.get ()); |
983af33b SDJ |
13688 | |
13689 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13690 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13691 | |
6c5b2ebe | 13692 | if (!canonical.lsals.empty ()) |
983af33b | 13693 | { |
6c5b2ebe PA |
13694 | const linespec_sals &lsal = canonical.lsals[0]; |
13695 | return std::move (lsal.sals); | |
983af33b | 13696 | } |
6c5b2ebe | 13697 | return {}; |
983af33b SDJ |
13698 | } |
13699 | ||
bf469271 | 13700 | /* Reset a breakpoint. */ |
c906108c | 13701 | |
bf469271 PA |
13702 | static void |
13703 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13704 | { |
fdf44873 TT |
13705 | input_radix = b->input_radix; |
13706 | set_language (b->language); | |
c906108c | 13707 | |
348d480f | 13708 | b->ops->re_set (b); |
c906108c SS |
13709 | } |
13710 | ||
c2f4122d PA |
13711 | /* Re-set breakpoint locations for the current program space. |
13712 | Locations bound to other program spaces are left untouched. */ | |
13713 | ||
c906108c | 13714 | void |
69de3c6a | 13715 | breakpoint_re_set (void) |
c906108c | 13716 | { |
35df4500 | 13717 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13718 | |
c5aa993b | 13719 | { |
fdf44873 TT |
13720 | scoped_restore_current_language save_language; |
13721 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13722 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13723 | |
8e817061 JB |
13724 | /* breakpoint_re_set_one sets the current_language to the language |
13725 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13726 | before re-evaluating the breakpoint's location. This change can | |
13727 | unfortunately get undone by accident if the language_mode is set | |
13728 | to auto, and we either switch frames, or more likely in this context, | |
13729 | we select the current frame. | |
13730 | ||
13731 | We prevent this by temporarily turning the language_mode to | |
13732 | language_mode_manual. We restore it once all breakpoints | |
13733 | have been reset. */ | |
13734 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13735 | language_mode = language_mode_manual; | |
13736 | ||
5ed8105e PA |
13737 | /* Note: we must not try to insert locations until after all |
13738 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13739 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13740 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13741 | |
5ed8105e PA |
13742 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13743 | { | |
a70b8144 | 13744 | try |
bf469271 PA |
13745 | { |
13746 | breakpoint_re_set_one (b); | |
13747 | } | |
230d2906 | 13748 | catch (const gdb_exception &ex) |
bf469271 PA |
13749 | { |
13750 | exception_fprintf (gdb_stderr, ex, | |
13751 | "Error in re-setting breakpoint %d: ", | |
13752 | b->number); | |
13753 | } | |
5ed8105e | 13754 | } |
5ed8105e PA |
13755 | |
13756 | jit_breakpoint_re_set (); | |
13757 | } | |
6c95b8df | 13758 | |
af02033e PP |
13759 | create_overlay_event_breakpoint (); |
13760 | create_longjmp_master_breakpoint (); | |
13761 | create_std_terminate_master_breakpoint (); | |
186c406b | 13762 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13763 | |
13764 | /* Now we can insert. */ | |
13765 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13766 | } |
13767 | \f | |
c906108c SS |
13768 | /* Reset the thread number of this breakpoint: |
13769 | ||
13770 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13771 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13772 | void |
fba45db2 | 13773 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13774 | { |
13775 | if (b->thread != -1) | |
13776 | { | |
00431a78 | 13777 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13778 | |
13779 | /* We're being called after following a fork. The new fork is | |
13780 | selected as current, and unless this was a vfork will have a | |
13781 | different program space from the original thread. Reset that | |
13782 | as well. */ | |
13783 | b->loc->pspace = current_program_space; | |
c906108c SS |
13784 | } |
13785 | } | |
13786 | ||
03ac34d5 MS |
13787 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13788 | If from_tty is nonzero, it prints a message to that effect, | |
13789 | which ends with a period (no newline). */ | |
13790 | ||
c906108c | 13791 | void |
fba45db2 | 13792 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13793 | { |
52f0bd74 | 13794 | struct breakpoint *b; |
c906108c SS |
13795 | |
13796 | if (count < 0) | |
13797 | count = 0; | |
13798 | ||
13799 | ALL_BREAKPOINTS (b) | |
13800 | if (b->number == bptnum) | |
c5aa993b | 13801 | { |
d77f58be SS |
13802 | if (is_tracepoint (b)) |
13803 | { | |
13804 | if (from_tty && count != 0) | |
13805 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13806 | bptnum); | |
13807 | return; | |
13808 | } | |
13809 | ||
c5aa993b | 13810 | b->ignore_count = count; |
221ea385 KS |
13811 | if (from_tty) |
13812 | { | |
13813 | if (count == 0) | |
3e43a32a MS |
13814 | printf_filtered (_("Will stop next time " |
13815 | "breakpoint %d is reached."), | |
221ea385 KS |
13816 | bptnum); |
13817 | else if (count == 1) | |
a3f17187 | 13818 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13819 | bptnum); |
13820 | else | |
3e43a32a MS |
13821 | printf_filtered (_("Will ignore next %d " |
13822 | "crossings of breakpoint %d."), | |
221ea385 KS |
13823 | count, bptnum); |
13824 | } | |
76727919 | 13825 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13826 | return; |
13827 | } | |
c906108c | 13828 | |
8a3fe4f8 | 13829 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13830 | } |
13831 | ||
c906108c SS |
13832 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13833 | ||
13834 | static void | |
0b39b52e | 13835 | ignore_command (const char *args, int from_tty) |
c906108c | 13836 | { |
0b39b52e | 13837 | const char *p = args; |
52f0bd74 | 13838 | int num; |
c906108c SS |
13839 | |
13840 | if (p == 0) | |
e2e0b3e5 | 13841 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13842 | |
c906108c | 13843 | num = get_number (&p); |
5c44784c | 13844 | if (num == 0) |
8a3fe4f8 | 13845 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13846 | if (*p == 0) |
8a3fe4f8 | 13847 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13848 | |
13849 | set_ignore_count (num, | |
13850 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13851 | from_tty); | |
221ea385 KS |
13852 | if (from_tty) |
13853 | printf_filtered ("\n"); | |
c906108c SS |
13854 | } |
13855 | \f | |
d0fe4701 XR |
13856 | |
13857 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13858 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13859 | |
13860 | static void | |
d0fe4701 XR |
13861 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13862 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13863 | { |
d0fe4701 XR |
13864 | if (bp_num_range.first == 0) |
13865 | { | |
13866 | warning (_("bad breakpoint number at or near '%d'"), | |
13867 | bp_num_range.first); | |
13868 | } | |
13869 | else | |
c906108c | 13870 | { |
d0fe4701 | 13871 | struct breakpoint *b, *tmp; |
197f0a60 | 13872 | |
d0fe4701 | 13873 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13874 | { |
d0fe4701 XR |
13875 | bool match = false; |
13876 | ||
5c44784c | 13877 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13878 | if (b->number == i) |
5c44784c | 13879 | { |
bfd28288 | 13880 | match = true; |
48649e1b | 13881 | function (b); |
11cf8741 | 13882 | break; |
5c44784c | 13883 | } |
bfd28288 | 13884 | if (!match) |
d0fe4701 | 13885 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13886 | } |
c906108c SS |
13887 | } |
13888 | } | |
13889 | ||
d0fe4701 XR |
13890 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13891 | ARGS. */ | |
13892 | ||
13893 | static void | |
13894 | map_breakpoint_numbers (const char *args, | |
13895 | gdb::function_view<void (breakpoint *)> function) | |
13896 | { | |
13897 | if (args == NULL || *args == '\0') | |
13898 | error_no_arg (_("one or more breakpoint numbers")); | |
13899 | ||
13900 | number_or_range_parser parser (args); | |
13901 | ||
13902 | while (!parser.finished ()) | |
13903 | { | |
13904 | int num = parser.get_number (); | |
13905 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13906 | } | |
13907 | } | |
13908 | ||
13909 | /* Return the breakpoint location structure corresponding to the | |
13910 | BP_NUM and LOC_NUM values. */ | |
13911 | ||
0d381245 | 13912 | static struct bp_location * |
d0fe4701 | 13913 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13914 | { |
0d381245 | 13915 | struct breakpoint *b; |
0d381245 VP |
13916 | |
13917 | ALL_BREAKPOINTS (b) | |
13918 | if (b->number == bp_num) | |
13919 | { | |
13920 | break; | |
13921 | } | |
13922 | ||
13923 | if (!b || b->number != bp_num) | |
d0fe4701 | 13924 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13925 | |
0d381245 | 13926 | if (loc_num == 0) |
d0fe4701 | 13927 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13928 | |
d0fe4701 XR |
13929 | int n = 0; |
13930 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13931 | if (++n == loc_num) | |
13932 | return loc; | |
13933 | ||
13934 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13935 | } |
13936 | ||
95e95a6d PA |
13937 | /* Modes of operation for extract_bp_num. */ |
13938 | enum class extract_bp_kind | |
13939 | { | |
13940 | /* Extracting a breakpoint number. */ | |
13941 | bp, | |
13942 | ||
13943 | /* Extracting a location number. */ | |
13944 | loc, | |
13945 | }; | |
13946 | ||
13947 | /* Extract a breakpoint or location number (as determined by KIND) | |
13948 | from the string starting at START. TRAILER is a character which | |
13949 | can be found after the number. If you don't want a trailer, use | |
13950 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13951 | string. This always returns a positive integer. */ | |
13952 | ||
13953 | static int | |
13954 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13955 | int trailer, const char **end_out = NULL) | |
13956 | { | |
13957 | const char *end = start; | |
13958 | int num = get_number_trailer (&end, trailer); | |
13959 | if (num < 0) | |
13960 | error (kind == extract_bp_kind::bp | |
13961 | ? _("Negative breakpoint number '%.*s'") | |
13962 | : _("Negative breakpoint location number '%.*s'"), | |
13963 | int (end - start), start); | |
13964 | if (num == 0) | |
13965 | error (kind == extract_bp_kind::bp | |
13966 | ? _("Bad breakpoint number '%.*s'") | |
13967 | : _("Bad breakpoint location number '%.*s'"), | |
13968 | int (end - start), start); | |
13969 | ||
13970 | if (end_out != NULL) | |
13971 | *end_out = end; | |
13972 | return num; | |
13973 | } | |
13974 | ||
13975 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13976 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13977 | representing the (inclusive) range. The returned pair's elements | |
13978 | are always positive integers. */ | |
13979 | ||
13980 | static std::pair<int, int> | |
13981 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13982 | const std::string &arg, | |
13983 | std::string::size_type arg_offset) | |
13984 | { | |
13985 | std::pair<int, int> range; | |
13986 | const char *bp_loc = &arg[arg_offset]; | |
13987 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13988 | if (dash != std::string::npos) | |
13989 | { | |
13990 | /* bp_loc is a range (x-z). */ | |
13991 | if (arg.length () == dash + 1) | |
13992 | error (kind == extract_bp_kind::bp | |
13993 | ? _("Bad breakpoint number at or near: '%s'") | |
13994 | : _("Bad breakpoint location number at or near: '%s'"), | |
13995 | bp_loc); | |
13996 | ||
13997 | const char *end; | |
13998 | const char *start_first = bp_loc; | |
13999 | const char *start_second = &arg[dash + 1]; | |
14000 | range.first = extract_bp_num (kind, start_first, '-'); | |
14001 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14002 | ||
14003 | if (range.first > range.second) | |
14004 | error (kind == extract_bp_kind::bp | |
14005 | ? _("Inverted breakpoint range at '%.*s'") | |
14006 | : _("Inverted breakpoint location range at '%.*s'"), | |
14007 | int (end - start_first), start_first); | |
14008 | } | |
14009 | else | |
14010 | { | |
14011 | /* bp_loc is a single value. */ | |
14012 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14013 | range.second = range.first; | |
14014 | } | |
14015 | return range; | |
14016 | } | |
14017 | ||
d0fe4701 XR |
14018 | /* Extract the breakpoint/location range specified by ARG. Returns |
14019 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14020 | BP_LOC_RANGE. | |
14021 | ||
14022 | ARG may be in any of the following forms: | |
14023 | ||
14024 | x where 'x' is a breakpoint number. | |
14025 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14026 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14027 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14028 | location number range. | |
14029 | */ | |
14030 | ||
cc638e86 | 14031 | static void |
d0fe4701 XR |
14032 | extract_bp_number_and_location (const std::string &arg, |
14033 | std::pair<int, int> &bp_num_range, | |
14034 | std::pair<int, int> &bp_loc_range) | |
14035 | { | |
14036 | std::string::size_type dot = arg.find ('.'); | |
14037 | ||
14038 | if (dot != std::string::npos) | |
14039 | { | |
14040 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14041 | ||
14042 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14043 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14044 | |
95e95a6d PA |
14045 | bp_num_range.first |
14046 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14047 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14048 | |
95e95a6d PA |
14049 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14050 | arg, dot + 1); | |
d0fe4701 XR |
14051 | } |
14052 | else | |
14053 | { | |
14054 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14055 | |
95e95a6d | 14056 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14057 | bp_loc_range.first = 0; |
14058 | bp_loc_range.second = 0; | |
14059 | } | |
d0fe4701 XR |
14060 | } |
14061 | ||
14062 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14063 | specifies whether to enable or disable. */ | |
14064 | ||
14065 | static void | |
14066 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14067 | { | |
14068 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14069 | if (loc != NULL) | |
14070 | { | |
14071 | if (loc->enabled != enable) | |
14072 | { | |
14073 | loc->enabled = enable; | |
14074 | mark_breakpoint_location_modified (loc); | |
14075 | } | |
14076 | if (target_supports_enable_disable_tracepoint () | |
14077 | && current_trace_status ()->running && loc->owner | |
14078 | && is_tracepoint (loc->owner)) | |
14079 | target_disable_tracepoint (loc); | |
14080 | } | |
14081 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14082 | |
14083 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14084 | } |
14085 | ||
14086 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14087 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14088 | (inclusive) range of location numbers of that breakpoint to | |
14089 | enable/disable. ENABLE specifies whether to enable or disable the | |
14090 | location. */ | |
14091 | ||
14092 | static void | |
14093 | enable_disable_breakpoint_location_range (int bp_num, | |
14094 | std::pair<int, int> &bp_loc_range, | |
14095 | bool enable) | |
14096 | { | |
14097 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14098 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14099 | } | |
0d381245 | 14100 | |
1900040c MS |
14101 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14102 | If from_tty is nonzero, it prints a message to that effect, | |
14103 | which ends with a period (no newline). */ | |
14104 | ||
c906108c | 14105 | void |
fba45db2 | 14106 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14107 | { |
14108 | /* Never disable a watchpoint scope breakpoint; we want to | |
14109 | hit them when we leave scope so we can delete both the | |
14110 | watchpoint and its scope breakpoint at that time. */ | |
14111 | if (bpt->type == bp_watchpoint_scope) | |
14112 | return; | |
14113 | ||
b5de0fa7 | 14114 | bpt->enable_state = bp_disabled; |
c906108c | 14115 | |
b775012e LM |
14116 | /* Mark breakpoint locations modified. */ |
14117 | mark_breakpoint_modified (bpt); | |
14118 | ||
d248b706 KY |
14119 | if (target_supports_enable_disable_tracepoint () |
14120 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14121 | { | |
14122 | struct bp_location *location; | |
14123 | ||
14124 | for (location = bpt->loc; location; location = location->next) | |
14125 | target_disable_tracepoint (location); | |
14126 | } | |
14127 | ||
44702360 | 14128 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14129 | |
76727919 | 14130 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14131 | } |
14132 | ||
d0fe4701 XR |
14133 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14134 | specified in ARGS. ARGS may be in any of the formats handled by | |
14135 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14136 | or disable the breakpoints/locations. */ | |
14137 | ||
c906108c | 14138 | static void |
d0fe4701 | 14139 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14140 | { |
c906108c | 14141 | if (args == 0) |
46c6471b PA |
14142 | { |
14143 | struct breakpoint *bpt; | |
14144 | ||
14145 | ALL_BREAKPOINTS (bpt) | |
14146 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14147 | { |
14148 | if (enable) | |
14149 | enable_breakpoint (bpt); | |
14150 | else | |
14151 | disable_breakpoint (bpt); | |
14152 | } | |
46c6471b | 14153 | } |
9eaabc75 | 14154 | else |
0d381245 | 14155 | { |
cb791d59 | 14156 | std::string num = extract_arg (&args); |
9eaabc75 | 14157 | |
cb791d59 | 14158 | while (!num.empty ()) |
d248b706 | 14159 | { |
d0fe4701 | 14160 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14161 | |
cc638e86 PA |
14162 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14163 | ||
14164 | if (bp_loc_range.first == bp_loc_range.second | |
14165 | && bp_loc_range.first == 0) | |
d0fe4701 | 14166 | { |
cc638e86 PA |
14167 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14168 | map_breakpoint_number_range (bp_num_range, | |
14169 | enable | |
14170 | ? enable_breakpoint | |
14171 | : disable_breakpoint); | |
14172 | } | |
14173 | else | |
14174 | { | |
14175 | /* Handle breakpoint ids with formats 'x.y' or | |
14176 | 'x.y-z'. */ | |
14177 | enable_disable_breakpoint_location_range | |
14178 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14179 | } |
9eaabc75 | 14180 | num = extract_arg (&args); |
d248b706 | 14181 | } |
0d381245 | 14182 | } |
c906108c SS |
14183 | } |
14184 | ||
d0fe4701 XR |
14185 | /* The disable command disables the specified breakpoints/locations |
14186 | (or all defined breakpoints) so they're no longer effective in | |
14187 | stopping the inferior. ARGS may be in any of the forms defined in | |
14188 | extract_bp_number_and_location. */ | |
14189 | ||
14190 | static void | |
14191 | disable_command (const char *args, int from_tty) | |
14192 | { | |
14193 | enable_disable_command (args, from_tty, false); | |
14194 | } | |
14195 | ||
c906108c | 14196 | static void |
816338b5 SS |
14197 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14198 | int count) | |
c906108c | 14199 | { |
afe38095 | 14200 | int target_resources_ok; |
c906108c SS |
14201 | |
14202 | if (bpt->type == bp_hardware_breakpoint) | |
14203 | { | |
14204 | int i; | |
c5aa993b | 14205 | i = hw_breakpoint_used_count (); |
53a5351d | 14206 | target_resources_ok = |
d92524f1 | 14207 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14208 | i + 1, 0); |
c906108c | 14209 | if (target_resources_ok == 0) |
8a3fe4f8 | 14210 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14211 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14212 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14213 | } |
14214 | ||
cc60f2e3 | 14215 | if (is_watchpoint (bpt)) |
c906108c | 14216 | { |
d07205c2 | 14217 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14218 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14219 | |
a70b8144 | 14220 | try |
c906108c | 14221 | { |
3a5c3e22 PA |
14222 | struct watchpoint *w = (struct watchpoint *) bpt; |
14223 | ||
1e718ff1 TJB |
14224 | orig_enable_state = bpt->enable_state; |
14225 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14226 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14227 | } |
230d2906 | 14228 | catch (const gdb_exception &e) |
c5aa993b | 14229 | { |
1e718ff1 | 14230 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14231 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14232 | bpt->number); | |
14233 | return; | |
c5aa993b | 14234 | } |
c906108c | 14235 | } |
0101ce28 | 14236 | |
b775012e LM |
14237 | bpt->enable_state = bp_enabled; |
14238 | ||
14239 | /* Mark breakpoint locations modified. */ | |
14240 | mark_breakpoint_modified (bpt); | |
14241 | ||
d248b706 KY |
14242 | if (target_supports_enable_disable_tracepoint () |
14243 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14244 | { | |
14245 | struct bp_location *location; | |
14246 | ||
14247 | for (location = bpt->loc; location; location = location->next) | |
14248 | target_enable_tracepoint (location); | |
14249 | } | |
14250 | ||
b4c291bb | 14251 | bpt->disposition = disposition; |
816338b5 | 14252 | bpt->enable_count = count; |
44702360 | 14253 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14254 | |
76727919 | 14255 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14256 | } |
14257 | ||
fe3f5fa8 | 14258 | |
c906108c | 14259 | void |
fba45db2 | 14260 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14261 | { |
816338b5 | 14262 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14263 | } |
14264 | ||
d0fe4701 XR |
14265 | /* The enable command enables the specified breakpoints/locations (or |
14266 | all defined breakpoints) so they once again become (or continue to | |
14267 | be) effective in stopping the inferior. ARGS may be in any of the | |
14268 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14269 | |
c906108c | 14270 | static void |
981a3fb3 | 14271 | enable_command (const char *args, int from_tty) |
c906108c | 14272 | { |
d0fe4701 | 14273 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14274 | } |
14275 | ||
c906108c | 14276 | static void |
4495129a | 14277 | enable_once_command (const char *args, int from_tty) |
c906108c | 14278 | { |
48649e1b TT |
14279 | map_breakpoint_numbers |
14280 | (args, [&] (breakpoint *b) | |
14281 | { | |
14282 | iterate_over_related_breakpoints | |
14283 | (b, [&] (breakpoint *bpt) | |
14284 | { | |
14285 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14286 | }); | |
14287 | }); | |
816338b5 SS |
14288 | } |
14289 | ||
14290 | static void | |
4495129a | 14291 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14292 | { |
b9d61307 SM |
14293 | int count; |
14294 | ||
14295 | if (args == NULL) | |
14296 | error_no_arg (_("hit count")); | |
14297 | ||
14298 | count = get_number (&args); | |
816338b5 | 14299 | |
48649e1b TT |
14300 | map_breakpoint_numbers |
14301 | (args, [&] (breakpoint *b) | |
14302 | { | |
14303 | iterate_over_related_breakpoints | |
14304 | (b, [&] (breakpoint *bpt) | |
14305 | { | |
14306 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14307 | }); | |
14308 | }); | |
c906108c SS |
14309 | } |
14310 | ||
c906108c | 14311 | static void |
4495129a | 14312 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14313 | { |
48649e1b TT |
14314 | map_breakpoint_numbers |
14315 | (args, [&] (breakpoint *b) | |
14316 | { | |
14317 | iterate_over_related_breakpoints | |
14318 | (b, [&] (breakpoint *bpt) | |
14319 | { | |
14320 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14321 | }); | |
14322 | }); | |
c906108c SS |
14323 | } |
14324 | \f | |
1f3b5d1b PP |
14325 | /* Invalidate last known value of any hardware watchpoint if |
14326 | the memory which that value represents has been written to by | |
14327 | GDB itself. */ | |
14328 | ||
14329 | static void | |
8de0566d YQ |
14330 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14331 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14332 | const bfd_byte *data) |
14333 | { | |
14334 | struct breakpoint *bp; | |
14335 | ||
14336 | ALL_BREAKPOINTS (bp) | |
14337 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14338 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14339 | { |
3a5c3e22 | 14340 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14341 | |
850645cf | 14342 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14343 | { |
14344 | struct bp_location *loc; | |
14345 | ||
14346 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14347 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14348 | && loc->address + loc->length > addr | |
14349 | && addr + len > loc->address) | |
14350 | { | |
3a5c3e22 | 14351 | wp->val = NULL; |
4c1d86d9 | 14352 | wp->val_valid = false; |
3a5c3e22 PA |
14353 | } |
14354 | } | |
1f3b5d1b PP |
14355 | } |
14356 | } | |
14357 | ||
8181d85f DJ |
14358 | /* Create and insert a breakpoint for software single step. */ |
14359 | ||
14360 | void | |
6c95b8df | 14361 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14362 | const address_space *aspace, |
4a64f543 | 14363 | CORE_ADDR next_pc) |
8181d85f | 14364 | { |
7c16b83e PA |
14365 | struct thread_info *tp = inferior_thread (); |
14366 | struct symtab_and_line sal; | |
14367 | CORE_ADDR pc = next_pc; | |
8181d85f | 14368 | |
34b7e8a6 PA |
14369 | if (tp->control.single_step_breakpoints == NULL) |
14370 | { | |
14371 | tp->control.single_step_breakpoints | |
5d5658a1 | 14372 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14373 | } |
8181d85f | 14374 | |
7c16b83e PA |
14375 | sal = find_pc_line (pc, 0); |
14376 | sal.pc = pc; | |
14377 | sal.section = find_pc_overlay (pc); | |
14378 | sal.explicit_pc = 1; | |
34b7e8a6 | 14379 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14380 | |
7c16b83e | 14381 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14382 | } |
14383 | ||
93f9a11f YQ |
14384 | /* Insert single step breakpoints according to the current state. */ |
14385 | ||
14386 | int | |
14387 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14388 | { | |
f5ea389a | 14389 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14390 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14391 | |
f5ea389a | 14392 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14393 | |
a0ff9e1a | 14394 | if (!next_pcs.empty ()) |
93f9a11f | 14395 | { |
f5ea389a | 14396 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14397 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14398 | |
a0ff9e1a | 14399 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14400 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14401 | ||
93f9a11f YQ |
14402 | return 1; |
14403 | } | |
14404 | else | |
14405 | return 0; | |
14406 | } | |
14407 | ||
34b7e8a6 | 14408 | /* See breakpoint.h. */ |
f02253f1 HZ |
14409 | |
14410 | int | |
7c16b83e | 14411 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14412 | const address_space *aspace, |
7c16b83e | 14413 | CORE_ADDR pc) |
1aafd4da | 14414 | { |
7c16b83e | 14415 | struct bp_location *loc; |
1aafd4da | 14416 | |
7c16b83e PA |
14417 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14418 | if (loc->inserted | |
14419 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14420 | return 1; | |
1aafd4da | 14421 | |
7c16b83e | 14422 | return 0; |
ef370185 JB |
14423 | } |
14424 | ||
14425 | /* Check whether a software single-step breakpoint is inserted at | |
14426 | PC. */ | |
14427 | ||
14428 | int | |
accd0bcd | 14429 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14430 | CORE_ADDR pc) |
14431 | { | |
34b7e8a6 PA |
14432 | struct breakpoint *bpt; |
14433 | ||
14434 | ALL_BREAKPOINTS (bpt) | |
14435 | { | |
14436 | if (bpt->type == bp_single_step | |
14437 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14438 | return 1; | |
14439 | } | |
14440 | return 0; | |
1aafd4da UW |
14441 | } |
14442 | ||
1042e4c0 SS |
14443 | /* Tracepoint-specific operations. */ |
14444 | ||
14445 | /* Set tracepoint count to NUM. */ | |
14446 | static void | |
14447 | set_tracepoint_count (int num) | |
14448 | { | |
14449 | tracepoint_count = num; | |
4fa62494 | 14450 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14451 | } |
14452 | ||
70221824 | 14453 | static void |
0b39b52e | 14454 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14455 | { |
ffc2605c TT |
14456 | event_location_up location = string_to_event_location (&arg, |
14457 | current_language); | |
bac7c5cf GB |
14458 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14459 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14460 | |
558a9d82 | 14461 | create_breakpoint (get_current_arch (), |
ffc2605c | 14462 | location.get (), |
f00aae0f | 14463 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14464 | 0 /* tempflag */, |
14465 | bp_tracepoint /* type_wanted */, | |
14466 | 0 /* Ignore count */, | |
14467 | pending_break_support, | |
14468 | ops, | |
14469 | from_tty, | |
14470 | 1 /* enabled */, | |
14471 | 0 /* internal */, 0); | |
1042e4c0 SS |
14472 | } |
14473 | ||
70221824 | 14474 | static void |
0b39b52e | 14475 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14476 | { |
ffc2605c TT |
14477 | event_location_up location = string_to_event_location (&arg, |
14478 | current_language); | |
558a9d82 | 14479 | create_breakpoint (get_current_arch (), |
ffc2605c | 14480 | location.get (), |
f00aae0f | 14481 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14482 | 0 /* tempflag */, |
14483 | bp_fast_tracepoint /* type_wanted */, | |
14484 | 0 /* Ignore count */, | |
14485 | pending_break_support, | |
14486 | &tracepoint_breakpoint_ops, | |
14487 | from_tty, | |
14488 | 1 /* enabled */, | |
14489 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14490 | } |
14491 | ||
14492 | /* strace command implementation. Creates a static tracepoint. */ | |
14493 | ||
70221824 | 14494 | static void |
0b39b52e | 14495 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14496 | { |
983af33b | 14497 | struct breakpoint_ops *ops; |
ffc2605c | 14498 | event_location_up location; |
983af33b SDJ |
14499 | |
14500 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14501 | or with a normal static tracepoint. */ | |
61012eef | 14502 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14503 | { |
14504 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14505 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14506 | } |
983af33b | 14507 | else |
f00aae0f KS |
14508 | { |
14509 | ops = &tracepoint_breakpoint_ops; | |
14510 | location = string_to_event_location (&arg, current_language); | |
14511 | } | |
983af33b | 14512 | |
558a9d82 | 14513 | create_breakpoint (get_current_arch (), |
ffc2605c | 14514 | location.get (), |
f00aae0f | 14515 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14516 | 0 /* tempflag */, |
14517 | bp_static_tracepoint /* type_wanted */, | |
14518 | 0 /* Ignore count */, | |
14519 | pending_break_support, | |
14520 | ops, | |
14521 | from_tty, | |
14522 | 1 /* enabled */, | |
14523 | 0 /* internal */, 0); | |
7a697b8d SS |
14524 | } |
14525 | ||
409873ef SS |
14526 | /* Set up a fake reader function that gets command lines from a linked |
14527 | list that was acquired during tracepoint uploading. */ | |
14528 | ||
14529 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14530 | static int next_cmd; |
409873ef SS |
14531 | |
14532 | static char * | |
14533 | read_uploaded_action (void) | |
14534 | { | |
a18ba4e4 | 14535 | char *rslt = nullptr; |
409873ef | 14536 | |
a18ba4e4 SM |
14537 | if (next_cmd < this_utp->cmd_strings.size ()) |
14538 | { | |
67aa1f3c | 14539 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14540 | next_cmd++; |
14541 | } | |
409873ef SS |
14542 | |
14543 | return rslt; | |
14544 | } | |
14545 | ||
00bf0b85 SS |
14546 | /* Given information about a tracepoint as recorded on a target (which |
14547 | can be either a live system or a trace file), attempt to create an | |
14548 | equivalent GDB tracepoint. This is not a reliable process, since | |
14549 | the target does not necessarily have all the information used when | |
14550 | the tracepoint was originally defined. */ | |
14551 | ||
d9b3f62e | 14552 | struct tracepoint * |
00bf0b85 | 14553 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14554 | { |
f2fc3015 TT |
14555 | const char *addr_str; |
14556 | char small_buf[100]; | |
d9b3f62e | 14557 | struct tracepoint *tp; |
fd9b8c24 | 14558 | |
409873ef | 14559 | if (utp->at_string) |
67aa1f3c | 14560 | addr_str = utp->at_string.get (); |
409873ef SS |
14561 | else |
14562 | { | |
14563 | /* In the absence of a source location, fall back to raw | |
14564 | address. Since there is no way to confirm that the address | |
14565 | means the same thing as when the trace was started, warn the | |
14566 | user. */ | |
3e43a32a MS |
14567 | warning (_("Uploaded tracepoint %d has no " |
14568 | "source location, using raw address"), | |
409873ef | 14569 | utp->number); |
8c042590 | 14570 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14571 | addr_str = small_buf; |
14572 | } | |
14573 | ||
14574 | /* There's not much we can do with a sequence of bytecodes. */ | |
14575 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14576 | warning (_("Uploaded tracepoint %d condition " |
14577 | "has no source form, ignoring it"), | |
409873ef | 14578 | utp->number); |
d5551862 | 14579 | |
ffc2605c TT |
14580 | event_location_up location = string_to_event_location (&addr_str, |
14581 | current_language); | |
8cdf0e15 | 14582 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14583 | location.get (), |
67aa1f3c | 14584 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14585 | 0 /* parse cond/thread */, |
8cdf0e15 | 14586 | 0 /* tempflag */, |
0fb4aa4b | 14587 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14588 | 0 /* Ignore count */, |
14589 | pending_break_support, | |
348d480f | 14590 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14591 | 0 /* from_tty */, |
84f4c1fe | 14592 | utp->enabled /* enabled */, |
44f238bb PA |
14593 | 0 /* internal */, |
14594 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14595 | return NULL; |
fd9b8c24 | 14596 | |
409873ef | 14597 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14598 | tp = get_tracepoint (tracepoint_count); |
14599 | gdb_assert (tp != NULL); | |
d5551862 | 14600 | |
00bf0b85 SS |
14601 | if (utp->pass > 0) |
14602 | { | |
8c042590 | 14603 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14604 | tp->number); |
00bf0b85 | 14605 | |
409873ef | 14606 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14607 | } |
14608 | ||
409873ef SS |
14609 | /* If we have uploaded versions of the original commands, set up a |
14610 | special-purpose "reader" function and call the usual command line | |
14611 | reader, then pass the result to the breakpoint command-setting | |
14612 | function. */ | |
a18ba4e4 | 14613 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14614 | { |
12973681 | 14615 | counted_command_line cmd_list; |
00bf0b85 | 14616 | |
409873ef | 14617 | this_utp = utp; |
3149d8c1 | 14618 | next_cmd = 0; |
d5551862 | 14619 | |
60b3cef2 | 14620 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14621 | |
c1fc2657 | 14622 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14623 | } |
a18ba4e4 SM |
14624 | else if (!utp->actions.empty () |
14625 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14626 | warning (_("Uploaded tracepoint %d actions " |
14627 | "have no source form, ignoring them"), | |
409873ef | 14628 | utp->number); |
00bf0b85 | 14629 | |
f196051f | 14630 | /* Copy any status information that might be available. */ |
c1fc2657 | 14631 | tp->hit_count = utp->hit_count; |
f196051f SS |
14632 | tp->traceframe_usage = utp->traceframe_usage; |
14633 | ||
00bf0b85 | 14634 | return tp; |
d9b3f62e | 14635 | } |
00bf0b85 | 14636 | |
1042e4c0 SS |
14637 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14638 | omitted. */ | |
14639 | ||
14640 | static void | |
1d12d88f | 14641 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14642 | { |
79a45e25 | 14643 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14644 | int num_printed; |
1042e4c0 | 14645 | |
5c458ae8 | 14646 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14647 | |
14648 | if (num_printed == 0) | |
1042e4c0 | 14649 | { |
e5a67952 | 14650 | if (args == NULL || *args == '\0') |
112e8700 | 14651 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14652 | else |
112e8700 | 14653 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14654 | } |
ad443146 SS |
14655 | |
14656 | default_collect_info (); | |
1042e4c0 SS |
14657 | } |
14658 | ||
4a64f543 | 14659 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14660 | Not supported by all targets. */ |
14661 | static void | |
5fed81ff | 14662 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14663 | { |
14664 | enable_command (args, from_tty); | |
14665 | } | |
14666 | ||
4a64f543 | 14667 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14668 | Not supported by all targets. */ |
14669 | static void | |
5fed81ff | 14670 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14671 | { |
14672 | disable_command (args, from_tty); | |
14673 | } | |
14674 | ||
4a64f543 | 14675 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14676 | static void |
4495129a | 14677 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14678 | { |
35df4500 | 14679 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14680 | |
14681 | dont_repeat (); | |
14682 | ||
14683 | if (arg == 0) | |
14684 | { | |
14685 | int breaks_to_delete = 0; | |
14686 | ||
14687 | /* Delete all breakpoints if no argument. | |
14688 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14689 | have to be deleted with an explicit breakpoint number |
14690 | argument. */ | |
1042e4c0 | 14691 | ALL_TRACEPOINTS (b) |
46c6471b | 14692 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14693 | { |
14694 | breaks_to_delete = 1; | |
14695 | break; | |
14696 | } | |
1042e4c0 SS |
14697 | |
14698 | /* Ask user only if there are some breakpoints to delete. */ | |
14699 | if (!from_tty | |
14700 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14701 | { | |
35df4500 | 14702 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14703 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14704 | delete_breakpoint (b); |
1042e4c0 SS |
14705 | } |
14706 | } | |
14707 | else | |
48649e1b | 14708 | map_breakpoint_numbers |
b926417a | 14709 | (arg, [&] (breakpoint *br) |
48649e1b | 14710 | { |
b926417a | 14711 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14712 | }); |
1042e4c0 SS |
14713 | } |
14714 | ||
197f0a60 TT |
14715 | /* Helper function for trace_pass_command. */ |
14716 | ||
14717 | static void | |
d9b3f62e | 14718 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14719 | { |
d9b3f62e | 14720 | tp->pass_count = count; |
76727919 | 14721 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14722 | if (from_tty) |
14723 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14724 | tp->number, count); |
197f0a60 TT |
14725 | } |
14726 | ||
1042e4c0 SS |
14727 | /* Set passcount for tracepoint. |
14728 | ||
14729 | First command argument is passcount, second is tracepoint number. | |
14730 | If tracepoint number omitted, apply to most recently defined. | |
14731 | Also accepts special argument "all". */ | |
14732 | ||
14733 | static void | |
0b39b52e | 14734 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14735 | { |
d9b3f62e | 14736 | struct tracepoint *t1; |
0b39b52e | 14737 | ULONGEST count; |
1042e4c0 SS |
14738 | |
14739 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14740 | error (_("passcount command requires an " |
14741 | "argument (count + optional TP num)")); | |
1042e4c0 | 14742 | |
0b39b52e | 14743 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14744 | |
529480d0 | 14745 | args = skip_spaces (args); |
1042e4c0 SS |
14746 | if (*args && strncasecmp (args, "all", 3) == 0) |
14747 | { | |
d9b3f62e PA |
14748 | struct breakpoint *b; |
14749 | ||
1042e4c0 | 14750 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14751 | if (*args) |
14752 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14753 | |
d9b3f62e | 14754 | ALL_TRACEPOINTS (b) |
197f0a60 | 14755 | { |
d9b3f62e | 14756 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14757 | trace_pass_set_count (t1, count, from_tty); |
14758 | } | |
14759 | } | |
14760 | else if (*args == '\0') | |
1042e4c0 | 14761 | { |
5fa1d40e | 14762 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14763 | if (t1) |
197f0a60 TT |
14764 | trace_pass_set_count (t1, count, from_tty); |
14765 | } | |
14766 | else | |
14767 | { | |
bfd28288 PA |
14768 | number_or_range_parser parser (args); |
14769 | while (!parser.finished ()) | |
1042e4c0 | 14770 | { |
bfd28288 | 14771 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14772 | if (t1) |
14773 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14774 | } |
14775 | } | |
1042e4c0 SS |
14776 | } |
14777 | ||
d9b3f62e | 14778 | struct tracepoint * |
1042e4c0 SS |
14779 | get_tracepoint (int num) |
14780 | { | |
14781 | struct breakpoint *t; | |
14782 | ||
14783 | ALL_TRACEPOINTS (t) | |
14784 | if (t->number == num) | |
d9b3f62e | 14785 | return (struct tracepoint *) t; |
1042e4c0 SS |
14786 | |
14787 | return NULL; | |
14788 | } | |
14789 | ||
d5551862 SS |
14790 | /* Find the tracepoint with the given target-side number (which may be |
14791 | different from the tracepoint number after disconnecting and | |
14792 | reconnecting). */ | |
14793 | ||
d9b3f62e | 14794 | struct tracepoint * |
d5551862 SS |
14795 | get_tracepoint_by_number_on_target (int num) |
14796 | { | |
d9b3f62e | 14797 | struct breakpoint *b; |
d5551862 | 14798 | |
d9b3f62e PA |
14799 | ALL_TRACEPOINTS (b) |
14800 | { | |
14801 | struct tracepoint *t = (struct tracepoint *) b; | |
14802 | ||
14803 | if (t->number_on_target == num) | |
14804 | return t; | |
14805 | } | |
d5551862 SS |
14806 | |
14807 | return NULL; | |
14808 | } | |
14809 | ||
1042e4c0 | 14810 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14811 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14812 | If the argument is missing, the most recent tracepoint |
14813 | (tracepoint_count) is returned. */ | |
14814 | ||
d9b3f62e | 14815 | struct tracepoint * |
0b39b52e | 14816 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14817 | number_or_range_parser *parser) |
1042e4c0 | 14818 | { |
1042e4c0 SS |
14819 | struct breakpoint *t; |
14820 | int tpnum; | |
0b39b52e | 14821 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14822 | |
bfd28288 | 14823 | if (parser != NULL) |
197f0a60 | 14824 | { |
bfd28288 PA |
14825 | gdb_assert (!parser->finished ()); |
14826 | tpnum = parser->get_number (); | |
197f0a60 TT |
14827 | } |
14828 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14829 | tpnum = tracepoint_count; |
1042e4c0 | 14830 | else |
197f0a60 | 14831 | tpnum = get_number (arg); |
1042e4c0 SS |
14832 | |
14833 | if (tpnum <= 0) | |
14834 | { | |
14835 | if (instring && *instring) | |
14836 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14837 | instring); | |
14838 | else | |
5fa1d40e | 14839 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14840 | return NULL; |
14841 | } | |
14842 | ||
14843 | ALL_TRACEPOINTS (t) | |
14844 | if (t->number == tpnum) | |
14845 | { | |
d9b3f62e | 14846 | return (struct tracepoint *) t; |
1042e4c0 SS |
14847 | } |
14848 | ||
1042e4c0 SS |
14849 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14850 | return NULL; | |
14851 | } | |
14852 | ||
d9b3f62e PA |
14853 | void |
14854 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14855 | { | |
14856 | if (b->thread != -1) | |
14857 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14858 | ||
14859 | if (b->task != 0) | |
14860 | fprintf_unfiltered (fp, " task %d", b->task); | |
14861 | ||
14862 | fprintf_unfiltered (fp, "\n"); | |
14863 | } | |
14864 | ||
6149aea9 PA |
14865 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14866 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14867 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14868 | true. */ |
6149aea9 | 14869 | |
1042e4c0 | 14870 | static void |
4495129a | 14871 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14872 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14873 | { |
14874 | struct breakpoint *tp; | |
6149aea9 | 14875 | int any = 0; |
6149aea9 | 14876 | int extra_trace_bits = 0; |
1042e4c0 | 14877 | |
6149aea9 PA |
14878 | if (filename == 0 || *filename == 0) |
14879 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14880 | |
14881 | /* See if we have anything to save. */ | |
6149aea9 | 14882 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14883 | { |
6149aea9 | 14884 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14885 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14886 | continue; |
14887 | ||
14888 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14889 | if (filter && !filter (tp)) | |
14890 | continue; | |
14891 | ||
14892 | any = 1; | |
14893 | ||
14894 | if (is_tracepoint (tp)) | |
14895 | { | |
14896 | extra_trace_bits = 1; | |
14897 | ||
14898 | /* We can stop searching. */ | |
14899 | break; | |
14900 | } | |
1042e4c0 | 14901 | } |
6149aea9 PA |
14902 | |
14903 | if (!any) | |
1042e4c0 | 14904 | { |
6149aea9 | 14905 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14906 | return; |
14907 | } | |
14908 | ||
ee0c3293 | 14909 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14910 | |
14911 | stdio_file fp; | |
14912 | ||
ee0c3293 | 14913 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14914 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14915 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14916 | |
6149aea9 | 14917 | if (extra_trace_bits) |
d7e74731 | 14918 | save_trace_state_variables (&fp); |
8bf6485c | 14919 | |
6149aea9 | 14920 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14921 | { |
6149aea9 | 14922 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14923 | if (!user_breakpoint_p (tp)) |
6149aea9 | 14924 | continue; |
8bf6485c | 14925 | |
6149aea9 PA |
14926 | /* If we have a filter, only save the breakpoints it accepts. */ |
14927 | if (filter && !filter (tp)) | |
14928 | continue; | |
14929 | ||
d7e74731 | 14930 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 14931 | |
6149aea9 PA |
14932 | /* Note, we can't rely on tp->number for anything, as we can't |
14933 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14934 | instead. */ | |
14935 | ||
14936 | if (tp->cond_string) | |
d7e74731 | 14937 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
14938 | |
14939 | if (tp->ignore_count) | |
d7e74731 | 14940 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 14941 | |
2d9442cc | 14942 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 14943 | { |
d7e74731 | 14944 | fp.puts (" commands\n"); |
a7bdde9e | 14945 | |
d7e74731 | 14946 | current_uiout->redirect (&fp); |
a70b8144 | 14947 | try |
1042e4c0 | 14948 | { |
d1b0a7bf | 14949 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 14950 | } |
230d2906 | 14951 | catch (const gdb_exception &ex) |
492d29ea | 14952 | { |
112e8700 | 14953 | current_uiout->redirect (NULL); |
eedc3f4f | 14954 | throw; |
492d29ea | 14955 | } |
1042e4c0 | 14956 | |
112e8700 | 14957 | current_uiout->redirect (NULL); |
d7e74731 | 14958 | fp.puts (" end\n"); |
1042e4c0 | 14959 | } |
6149aea9 PA |
14960 | |
14961 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 14962 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
14963 | |
14964 | /* If this is a multi-location breakpoint, check if the locations | |
14965 | should be individually disabled. Watchpoint locations are | |
14966 | special, and not user visible. */ | |
14967 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14968 | { | |
14969 | struct bp_location *loc; | |
14970 | int n = 1; | |
14971 | ||
14972 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
14973 | if (!loc->enabled) | |
d7e74731 | 14974 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 14975 | } |
1042e4c0 | 14976 | } |
8bf6485c | 14977 | |
6149aea9 | 14978 | if (extra_trace_bits && *default_collect) |
d7e74731 | 14979 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 14980 | |
1042e4c0 | 14981 | if (from_tty) |
ee0c3293 | 14982 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14983 | } |
14984 | ||
14985 | /* The `save breakpoints' command. */ | |
14986 | ||
14987 | static void | |
4495129a | 14988 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14989 | { |
14990 | save_breakpoints (args, from_tty, NULL); | |
14991 | } | |
14992 | ||
14993 | /* The `save tracepoints' command. */ | |
14994 | ||
14995 | static void | |
4495129a | 14996 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14997 | { |
14998 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14999 | } |
15000 | ||
15001 | /* Create a vector of all tracepoints. */ | |
15002 | ||
f51e0e20 | 15003 | std::vector<breakpoint *> |
eeae04df | 15004 | all_tracepoints (void) |
1042e4c0 | 15005 | { |
f51e0e20 | 15006 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15007 | struct breakpoint *tp; |
15008 | ||
15009 | ALL_TRACEPOINTS (tp) | |
15010 | { | |
f51e0e20 | 15011 | tp_vec.push_back (tp); |
1042e4c0 SS |
15012 | } |
15013 | ||
15014 | return tp_vec; | |
15015 | } | |
15016 | ||
c906108c | 15017 | \f |
629500fa KS |
15018 | /* This help string is used to consolidate all the help string for specifying |
15019 | locations used by several commands. */ | |
15020 | ||
15021 | #define LOCATION_HELP_STRING \ | |
15022 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15023 | source filename, function name, label name, and line number.\n\ | |
15024 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15025 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15026 | \"factorial.c:fact:the_top\".\n\ | |
15027 | \n\ | |
15028 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15029 | program. Example: To specify the fourth byte past the start function\n\ | |
15030 | \"main\", use \"*main + 4\".\n\ | |
15031 | \n\ | |
15032 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15033 | syntax to specify location parameters.\n\ | |
15034 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15035 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15036 | -function fact -label the_top\".\n\ |
15037 | \n\ | |
15038 | By default, a specified function is matched against the program's\n\ | |
15039 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15040 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15041 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15042 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15043 | specified name as a complete fully-qualified name instead." |
629500fa | 15044 | |
4a64f543 MS |
15045 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15046 | commands. It is defined as a macro to prevent duplication. | |
15047 | COMMAND should be a string constant containing the name of the | |
15048 | command. */ | |
629500fa | 15049 | |
31e2b00f | 15050 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15051 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15052 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15053 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15054 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15055 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15056 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15057 | below.\n\ | |
15058 | \n\ | |
dc10affe PA |
15059 | With no LOCATION, uses current execution address of the selected\n\ |
15060 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15061 | \n\ |
15062 | THREADNUM is the number from \"info threads\".\n\ | |
15063 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15064 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15065 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15066 | conditions are different.\n\ | |
31e2b00f AS |
15067 | \n\ |
15068 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15069 | ||
44feb3ce TT |
15070 | /* List of subcommands for "catch". */ |
15071 | static struct cmd_list_element *catch_cmdlist; | |
15072 | ||
15073 | /* List of subcommands for "tcatch". */ | |
15074 | static struct cmd_list_element *tcatch_cmdlist; | |
15075 | ||
9ac4176b | 15076 | void |
a121b7c1 | 15077 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15078 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15079 | completer_ftype *completer, |
44feb3ce TT |
15080 | void *user_data_catch, |
15081 | void *user_data_tcatch) | |
15082 | { | |
15083 | struct cmd_list_element *command; | |
15084 | ||
0450cc4c | 15085 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15086 | &catch_cmdlist); |
15087 | set_cmd_sfunc (command, sfunc); | |
15088 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15089 | set_cmd_completer (command, completer); |
44feb3ce | 15090 | |
0450cc4c | 15091 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15092 | &tcatch_cmdlist); |
15093 | set_cmd_sfunc (command, sfunc); | |
15094 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15095 | set_cmd_completer (command, completer); |
44feb3ce TT |
15096 | } |
15097 | ||
84f4c1fe | 15098 | struct breakpoint * |
95da600f | 15099 | iterate_over_breakpoints (gdb::function_view<bool (breakpoint *)> callback) |
84f4c1fe | 15100 | { |
35df4500 | 15101 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15102 | |
35df4500 | 15103 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe | 15104 | { |
95da600f | 15105 | if (callback (b)) |
84f4c1fe PM |
15106 | return b; |
15107 | } | |
15108 | ||
15109 | return NULL; | |
15110 | } | |
15111 | ||
0574c78f GB |
15112 | /* Zero if any of the breakpoint's locations could be a location where |
15113 | functions have been inlined, nonzero otherwise. */ | |
15114 | ||
15115 | static int | |
15116 | is_non_inline_function (struct breakpoint *b) | |
15117 | { | |
15118 | /* The shared library event breakpoint is set on the address of a | |
15119 | non-inline function. */ | |
15120 | if (b->type == bp_shlib_event) | |
15121 | return 1; | |
15122 | ||
15123 | return 0; | |
15124 | } | |
15125 | ||
15126 | /* Nonzero if the specified PC cannot be a location where functions | |
15127 | have been inlined. */ | |
15128 | ||
15129 | int | |
accd0bcd | 15130 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15131 | const struct target_waitstatus *ws) |
0574c78f GB |
15132 | { |
15133 | struct breakpoint *b; | |
15134 | struct bp_location *bl; | |
15135 | ||
15136 | ALL_BREAKPOINTS (b) | |
15137 | { | |
15138 | if (!is_non_inline_function (b)) | |
15139 | continue; | |
15140 | ||
15141 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15142 | { | |
15143 | if (!bl->shlib_disabled | |
09ac7c10 | 15144 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15145 | return 1; |
15146 | } | |
15147 | } | |
15148 | ||
15149 | return 0; | |
15150 | } | |
15151 | ||
2f202fde JK |
15152 | /* Remove any references to OBJFILE which is going to be freed. */ |
15153 | ||
15154 | void | |
15155 | breakpoint_free_objfile (struct objfile *objfile) | |
15156 | { | |
15157 | struct bp_location **locp, *loc; | |
15158 | ||
15159 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15160 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15161 | loc->symtab = NULL; |
15162 | } | |
15163 | ||
2060206e PA |
15164 | void |
15165 | initialize_breakpoint_ops (void) | |
15166 | { | |
15167 | static int initialized = 0; | |
15168 | ||
15169 | struct breakpoint_ops *ops; | |
15170 | ||
15171 | if (initialized) | |
15172 | return; | |
15173 | initialized = 1; | |
15174 | ||
15175 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15176 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15177 | internal and momentary breakpoints, etc.). */ | |
15178 | ops = &bkpt_base_breakpoint_ops; | |
15179 | *ops = base_breakpoint_ops; | |
15180 | ops->re_set = bkpt_re_set; | |
15181 | ops->insert_location = bkpt_insert_location; | |
15182 | ops->remove_location = bkpt_remove_location; | |
15183 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15184 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15185 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15186 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15187 | |
15188 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15189 | ops = &bkpt_breakpoint_ops; | |
15190 | *ops = bkpt_base_breakpoint_ops; | |
15191 | ops->re_set = bkpt_re_set; | |
15192 | ops->resources_needed = bkpt_resources_needed; | |
15193 | ops->print_it = bkpt_print_it; | |
15194 | ops->print_mention = bkpt_print_mention; | |
15195 | ops->print_recreate = bkpt_print_recreate; | |
15196 | ||
15197 | /* Ranged breakpoints. */ | |
15198 | ops = &ranged_breakpoint_ops; | |
15199 | *ops = bkpt_breakpoint_ops; | |
15200 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15201 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15202 | ops->print_it = print_it_ranged_breakpoint; | |
15203 | ops->print_one = print_one_ranged_breakpoint; | |
15204 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15205 | ops->print_mention = print_mention_ranged_breakpoint; | |
15206 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15207 | ||
15208 | /* Internal breakpoints. */ | |
15209 | ops = &internal_breakpoint_ops; | |
15210 | *ops = bkpt_base_breakpoint_ops; | |
15211 | ops->re_set = internal_bkpt_re_set; | |
15212 | ops->check_status = internal_bkpt_check_status; | |
15213 | ops->print_it = internal_bkpt_print_it; | |
15214 | ops->print_mention = internal_bkpt_print_mention; | |
15215 | ||
15216 | /* Momentary breakpoints. */ | |
15217 | ops = &momentary_breakpoint_ops; | |
15218 | *ops = bkpt_base_breakpoint_ops; | |
15219 | ops->re_set = momentary_bkpt_re_set; | |
15220 | ops->check_status = momentary_bkpt_check_status; | |
15221 | ops->print_it = momentary_bkpt_print_it; | |
15222 | ops->print_mention = momentary_bkpt_print_mention; | |
15223 | ||
55aa24fb SDJ |
15224 | /* Probe breakpoints. */ |
15225 | ops = &bkpt_probe_breakpoint_ops; | |
15226 | *ops = bkpt_breakpoint_ops; | |
15227 | ops->insert_location = bkpt_probe_insert_location; | |
15228 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15229 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15230 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15231 | |
2060206e PA |
15232 | /* Watchpoints. */ |
15233 | ops = &watchpoint_breakpoint_ops; | |
15234 | *ops = base_breakpoint_ops; | |
15235 | ops->re_set = re_set_watchpoint; | |
15236 | ops->insert_location = insert_watchpoint; | |
15237 | ops->remove_location = remove_watchpoint; | |
15238 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15239 | ops->check_status = check_status_watchpoint; | |
15240 | ops->resources_needed = resources_needed_watchpoint; | |
15241 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15242 | ops->print_it = print_it_watchpoint; | |
15243 | ops->print_mention = print_mention_watchpoint; | |
15244 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15245 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15246 | |
15247 | /* Masked watchpoints. */ | |
15248 | ops = &masked_watchpoint_breakpoint_ops; | |
15249 | *ops = watchpoint_breakpoint_ops; | |
15250 | ops->insert_location = insert_masked_watchpoint; | |
15251 | ops->remove_location = remove_masked_watchpoint; | |
15252 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15253 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15254 | ops->print_it = print_it_masked_watchpoint; | |
15255 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15256 | ops->print_mention = print_mention_masked_watchpoint; | |
15257 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15258 | ||
15259 | /* Tracepoints. */ | |
15260 | ops = &tracepoint_breakpoint_ops; | |
15261 | *ops = base_breakpoint_ops; | |
15262 | ops->re_set = tracepoint_re_set; | |
15263 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15264 | ops->print_one_detail = tracepoint_print_one_detail; | |
15265 | ops->print_mention = tracepoint_print_mention; | |
15266 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15267 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15268 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15269 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15270 | |
55aa24fb SDJ |
15271 | /* Probe tracepoints. */ |
15272 | ops = &tracepoint_probe_breakpoint_ops; | |
15273 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15274 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15275 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15276 | |
983af33b SDJ |
15277 | /* Static tracepoints with marker (`-m'). */ |
15278 | ops = &strace_marker_breakpoint_ops; | |
15279 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15280 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15281 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15282 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15283 | |
15284 | /* Fork catchpoints. */ | |
15285 | ops = &catch_fork_breakpoint_ops; | |
15286 | *ops = base_breakpoint_ops; | |
15287 | ops->insert_location = insert_catch_fork; | |
15288 | ops->remove_location = remove_catch_fork; | |
15289 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15290 | ops->print_it = print_it_catch_fork; | |
15291 | ops->print_one = print_one_catch_fork; | |
15292 | ops->print_mention = print_mention_catch_fork; | |
15293 | ops->print_recreate = print_recreate_catch_fork; | |
15294 | ||
15295 | /* Vfork catchpoints. */ | |
15296 | ops = &catch_vfork_breakpoint_ops; | |
15297 | *ops = base_breakpoint_ops; | |
15298 | ops->insert_location = insert_catch_vfork; | |
15299 | ops->remove_location = remove_catch_vfork; | |
15300 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15301 | ops->print_it = print_it_catch_vfork; | |
15302 | ops->print_one = print_one_catch_vfork; | |
15303 | ops->print_mention = print_mention_catch_vfork; | |
15304 | ops->print_recreate = print_recreate_catch_vfork; | |
15305 | ||
15306 | /* Exec catchpoints. */ | |
15307 | ops = &catch_exec_breakpoint_ops; | |
15308 | *ops = base_breakpoint_ops; | |
2060206e PA |
15309 | ops->insert_location = insert_catch_exec; |
15310 | ops->remove_location = remove_catch_exec; | |
15311 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15312 | ops->print_it = print_it_catch_exec; | |
15313 | ops->print_one = print_one_catch_exec; | |
15314 | ops->print_mention = print_mention_catch_exec; | |
15315 | ops->print_recreate = print_recreate_catch_exec; | |
15316 | ||
edcc5120 TT |
15317 | /* Solib-related catchpoints. */ |
15318 | ops = &catch_solib_breakpoint_ops; | |
15319 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15320 | ops->insert_location = insert_catch_solib; |
15321 | ops->remove_location = remove_catch_solib; | |
15322 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15323 | ops->check_status = check_status_catch_solib; | |
15324 | ops->print_it = print_it_catch_solib; | |
15325 | ops->print_one = print_one_catch_solib; | |
15326 | ops->print_mention = print_mention_catch_solib; | |
15327 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15328 | |
15329 | ops = &dprintf_breakpoint_ops; | |
15330 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15331 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15332 | ops->resources_needed = bkpt_resources_needed; |
15333 | ops->print_it = bkpt_print_it; | |
15334 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15335 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15336 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15337 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15338 | } |
15339 | ||
8bfd80db YQ |
15340 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15341 | ||
15342 | static struct cmd_list_element *enablebreaklist = NULL; | |
15343 | ||
8588b356 SM |
15344 | /* See breakpoint.h. */ |
15345 | ||
15346 | cmd_list_element *commands_cmd_element = nullptr; | |
15347 | ||
6c265988 | 15348 | void _initialize_breakpoint (); |
c906108c | 15349 | void |
6c265988 | 15350 | _initialize_breakpoint () |
c906108c SS |
15351 | { |
15352 | struct cmd_list_element *c; | |
15353 | ||
2060206e PA |
15354 | initialize_breakpoint_ops (); |
15355 | ||
76727919 TT |
15356 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15357 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15358 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15359 | |
c906108c SS |
15360 | breakpoint_chain = 0; |
15361 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15362 | before a breakpoint is set. */ | |
15363 | breakpoint_count = 0; | |
15364 | ||
1042e4c0 SS |
15365 | tracepoint_count = 0; |
15366 | ||
1bedd215 AC |
15367 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15368 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15369 | Usage is `ignore N COUNT'.")); | |
c906108c | 15370 | |
8588b356 SM |
15371 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15372 | commands_command, _("\ | |
18da0c51 MG |
15373 | Set commands to be executed when the given breakpoints are hit.\n\ |
15374 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15375 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15376 | (e.g. `5-7').\n\ | |
c906108c SS |
15377 | With no argument, the targeted breakpoint is the last one set.\n\ |
15378 | The commands themselves follow starting on the next line.\n\ | |
15379 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15380 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15381 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15382 | |
d55637df | 15383 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15384 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15385 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15386 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15387 | set_cmd_completer (c, condition_completer); |
c906108c | 15388 | |
1bedd215 | 15389 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15390 | Set a temporary breakpoint.\n\ |
c906108c SS |
15391 | Like \"break\" except the breakpoint is only temporary,\n\ |
15392 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15393 | by using \"enable delete\" on the breakpoint number.\n\ |
15394 | \n" | |
15395 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15396 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15397 | |
1bedd215 | 15398 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15399 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15400 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15401 | some target hardware may not have this support.\n\ |
15402 | \n" | |
15403 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15404 | set_cmd_completer (c, location_completer); |
c906108c | 15405 | |
1bedd215 | 15406 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15407 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15408 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15409 | so it will be deleted when hit.\n\ |
15410 | \n" | |
15411 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15412 | set_cmd_completer (c, location_completer); |
c906108c | 15413 | |
1bedd215 | 15414 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
590042fc PW |
15415 | Enable all or some breakpoints.\n\ |
15416 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15417 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15418 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15419 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15420 | With a subcommand you can enable temporarily."), |
c906108c | 15421 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15422 | |
15423 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15424 | ||
84951ab5 | 15425 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15426 | Enable all or some breakpoints.\n\ |
15427 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15428 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15429 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15430 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15431 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15432 | |
1a966eab | 15433 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15434 | Enable some breakpoints for one hit.\n\ |
15435 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15436 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15437 | &enablebreaklist); |
15438 | ||
1a966eab | 15439 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15440 | Enable some breakpoints and delete when hit.\n\ |
15441 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15442 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15443 | &enablebreaklist); |
15444 | ||
816338b5 | 15445 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15446 | Enable some breakpoints for COUNT hits.\n\ |
15447 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15448 | If a breakpoint is hit while enabled in this fashion,\n\ |
15449 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15450 | &enablebreaklist); | |
15451 | ||
1a966eab | 15452 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15453 | Enable some breakpoints and delete when hit.\n\ |
15454 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15455 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15456 | &enablelist); |
15457 | ||
1a966eab | 15458 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15459 | Enable some breakpoints for one hit.\n\ |
15460 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15461 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15462 | &enablelist); |
15463 | ||
15464 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15465 | Enable some breakpoints for COUNT hits.\n\ |
15466 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15467 | If a breakpoint is hit while enabled in this fashion,\n\ |
15468 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15469 | &enablelist); |
15470 | ||
1bedd215 | 15471 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
590042fc PW |
15472 | Disable all or some breakpoints.\n\ |
15473 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15474 | Arguments are breakpoint numbers with spaces in between.\n\ |
15475 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15476 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15477 | &disablelist, "disable ", 1, &cmdlist); |
15478 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15479 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15480 | |
57b4f16e | 15481 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
15482 | Disable all or some breakpoints.\n\ |
15483 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15484 | Arguments are breakpoint numbers with spaces in between.\n\ |
15485 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15486 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15487 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15488 | &disablelist); |
15489 | ||
1bedd215 | 15490 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
590042fc PW |
15491 | Delete all or some breakpoints.\n\ |
15492 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15493 | Arguments are breakpoint numbers with spaces in between.\n\ |
15494 | To delete all breakpoints, give no argument.\n\ | |
15495 | \n\ | |
590042fc | 15496 | Also a prefix command for deletion of other GDB objects."), |
c906108c SS |
15497 | &deletelist, "delete ", 1, &cmdlist); |
15498 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15499 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15500 | |
57b4f16e | 15501 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
15502 | Delete all or some breakpoints or auto-display expressions.\n\ |
15503 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15504 | Arguments are breakpoint numbers with spaces in between.\n\ |
15505 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15506 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15507 | &deletelist); |
15508 | ||
1bedd215 | 15509 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15510 | Clear breakpoint at specified location.\n\ |
15511 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15512 | \n\ |
15513 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15514 | is executing in.\n" |
89549d7f | 15515 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15516 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15517 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15518 | |
1bedd215 | 15519 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15520 | Set breakpoint at specified location.\n" |
31e2b00f | 15521 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15522 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15523 | |
c906108c SS |
15524 | add_com_alias ("b", "break", class_run, 1); |
15525 | add_com_alias ("br", "break", class_run, 1); | |
15526 | add_com_alias ("bre", "break", class_run, 1); | |
15527 | add_com_alias ("brea", "break", class_run, 1); | |
15528 | ||
c906108c SS |
15529 | if (dbx_commands) |
15530 | { | |
1bedd215 AC |
15531 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15532 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15533 | &stoplist, "stop ", 1, &cmdlist); |
15534 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15535 | _("Break in function or address."), &stoplist); |
c5aa993b | 15536 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15537 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15538 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15539 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15540 | The \"Type\" column indicates one of:\n\ |
15541 | \tbreakpoint - normal breakpoint\n\ | |
15542 | \twatchpoint - watchpoint\n\ | |
15543 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15544 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15545 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15546 | address and file/line number respectively.\n\ |
15547 | \n\ | |
15548 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15549 | are set to the address of the last breakpoint listed unless the command\n\ |
15550 | is prefixed with \"server \".\n\n\ | |
c906108c | 15551 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15552 | breakpoint set.")); |
c906108c SS |
15553 | } |
15554 | ||
11db9430 | 15555 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15556 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15557 | The \"Type\" column indicates one of:\n\ |
15558 | \tbreakpoint - normal breakpoint\n\ | |
15559 | \twatchpoint - watchpoint\n\ | |
15560 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15561 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15562 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15563 | address and file/line number respectively.\n\ |
15564 | \n\ | |
15565 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15566 | are set to the address of the last breakpoint listed unless the command\n\ |
15567 | is prefixed with \"server \".\n\n\ | |
c906108c | 15568 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15569 | breakpoint set.")); |
c906108c | 15570 | |
6b04bdb7 MS |
15571 | add_info_alias ("b", "breakpoints", 1); |
15572 | ||
1a966eab AC |
15573 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15574 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15575 | The \"Type\" column indicates one of:\n\ |
15576 | \tbreakpoint - normal breakpoint\n\ | |
15577 | \twatchpoint - watchpoint\n\ | |
15578 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15579 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15580 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15581 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15582 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15583 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15584 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15585 | address and file/line number respectively.\n\ |
15586 | \n\ | |
15587 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15588 | are set to the address of the last breakpoint listed unless the command\n\ |
15589 | is prefixed with \"server \".\n\n\ | |
c906108c | 15590 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15591 | breakpoint set."), |
c906108c SS |
15592 | &maintenanceinfolist); |
15593 | ||
3b6acaee | 15594 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 15595 | Set catchpoints to catch events."), |
3b6acaee TT |
15596 | &catch_cmdlist, "catch ", |
15597 | 0/*allow-unknown*/, &cmdlist); | |
44feb3ce | 15598 | |
3b6acaee | 15599 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 15600 | Set temporary catchpoints to catch events."), |
3b6acaee TT |
15601 | &tcatch_cmdlist, "tcatch ", |
15602 | 0/*allow-unknown*/, &cmdlist); | |
44feb3ce | 15603 | |
44feb3ce TT |
15604 | add_catch_command ("fork", _("Catch calls to fork."), |
15605 | catch_fork_command_1, | |
a96d9b2e | 15606 | NULL, |
44feb3ce TT |
15607 | (void *) (uintptr_t) catch_fork_permanent, |
15608 | (void *) (uintptr_t) catch_fork_temporary); | |
15609 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15610 | catch_fork_command_1, | |
a96d9b2e | 15611 | NULL, |
44feb3ce TT |
15612 | (void *) (uintptr_t) catch_vfork_permanent, |
15613 | (void *) (uintptr_t) catch_vfork_temporary); | |
15614 | add_catch_command ("exec", _("Catch calls to exec."), | |
15615 | catch_exec_command_1, | |
a96d9b2e SDJ |
15616 | NULL, |
15617 | CATCH_PERMANENT, | |
15618 | CATCH_TEMPORARY); | |
edcc5120 TT |
15619 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15620 | Usage: catch load [REGEX]\n\ | |
15621 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15622 | catch_load_command_1, | |
15623 | NULL, | |
15624 | CATCH_PERMANENT, | |
15625 | CATCH_TEMPORARY); | |
15626 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15627 | Usage: catch unload [REGEX]\n\ | |
15628 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15629 | catch_unload_command_1, | |
15630 | NULL, | |
15631 | CATCH_PERMANENT, | |
15632 | CATCH_TEMPORARY); | |
c5aa993b | 15633 | |
1bedd215 AC |
15634 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15635 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15636 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15637 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15638 | an expression changes.\n\ |
15639 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15640 | the memory to which it refers.")); | |
65d12d83 | 15641 | set_cmd_completer (c, expression_completer); |
c906108c | 15642 | |
1bedd215 AC |
15643 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15644 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15645 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15646 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15647 | an expression is read.\n\ |
15648 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15649 | the memory to which it refers.")); | |
65d12d83 | 15650 | set_cmd_completer (c, expression_completer); |
c906108c | 15651 | |
1bedd215 AC |
15652 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15653 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15654 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15655 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15656 | an expression is either read or written.\n\ |
15657 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15658 | the memory to which it refers.")); | |
65d12d83 | 15659 | set_cmd_completer (c, expression_completer); |
c906108c | 15660 | |
11db9430 | 15661 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15662 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15663 | |
920d2a44 AC |
15664 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15665 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15666 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15667 | &can_use_hw_watchpoints, _("\ | |
15668 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15669 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15670 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15671 | such is available. (However, any hardware watchpoints that were\n\ | |
15672 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15673 | hardware.)"), |
15674 | NULL, | |
920d2a44 | 15675 | show_can_use_hw_watchpoints, |
85c07804 | 15676 | &setlist, &showlist); |
c906108c SS |
15677 | |
15678 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15679 | |
1042e4c0 SS |
15680 | /* Tracepoint manipulation commands. */ |
15681 | ||
15682 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15683 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15684 | \n" |
15685 | BREAK_ARGS_HELP ("trace") "\n\ | |
15686 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15687 | set_cmd_completer (c, location_completer); | |
15688 | ||
57b4f16e PW |
15689 | add_com_alias ("tp", "trace", class_breakpoint, 0); |
15690 | add_com_alias ("tr", "trace", class_breakpoint, 1); | |
15691 | add_com_alias ("tra", "trace", class_breakpoint, 1); | |
15692 | add_com_alias ("trac", "trace", class_breakpoint, 1); | |
1042e4c0 | 15693 | |
7a697b8d | 15694 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15695 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15696 | \n" |
15697 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15698 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15699 | set_cmd_completer (c, location_completer); | |
15700 | ||
0fb4aa4b | 15701 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15702 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15703 | \n\ |
15704 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15705 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15706 | or -m MARKER_ID.\n\n\ | |
15707 | If a marker id is specified, probe the marker with that name. With\n\ | |
15708 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15709 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15710 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15711 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15712 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15713 | \n\ | |
15714 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15715 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15716 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15717 | conditions are different.\n\ | |
0fb4aa4b PA |
15718 | \n\ |
15719 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15720 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15721 | set_cmd_completer (c, location_completer); | |
15722 | ||
11db9430 | 15723 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15724 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15725 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15726 | last tracepoint set.")); | |
15727 | ||
15728 | add_info_alias ("tp", "tracepoints", 1); | |
15729 | ||
15730 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15731 | Delete specified tracepoints.\n\ | |
15732 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15733 | No argument means delete all tracepoints."), | |
15734 | &deletelist); | |
7e20dfcd | 15735 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15736 | |
15737 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15738 | Disable specified tracepoints.\n\ | |
15739 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15740 | No argument means disable all tracepoints."), | |
15741 | &disablelist); | |
15742 | deprecate_cmd (c, "disable"); | |
15743 | ||
15744 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15745 | Enable specified tracepoints.\n\ | |
15746 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15747 | No argument means enable all tracepoints."), | |
15748 | &enablelist); | |
15749 | deprecate_cmd (c, "enable"); | |
15750 | ||
15751 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15752 | Set the passcount for a tracepoint.\n\ | |
15753 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15754 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15755 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15756 | ||
0743fc83 TT |
15757 | add_basic_prefix_cmd ("save", class_breakpoint, |
15758 | _("Save breakpoint definitions as a script."), | |
15759 | &save_cmdlist, "save ", | |
15760 | 0/*allow-unknown*/, &cmdlist); | |
6149aea9 PA |
15761 | |
15762 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15763 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15764 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15765 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15766 | session to restore them."), | |
15767 | &save_cmdlist); | |
15768 | set_cmd_completer (c, filename_completer); | |
15769 | ||
15770 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15771 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15772 | Use the 'source' command in another debug session to restore them."), |
15773 | &save_cmdlist); | |
1042e4c0 SS |
15774 | set_cmd_completer (c, filename_completer); |
15775 | ||
6149aea9 PA |
15776 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15777 | deprecate_cmd (c, "save tracepoints"); | |
15778 | ||
3b6acaee | 15779 | add_basic_prefix_cmd ("breakpoint", class_maintenance, _("\ |
590042fc | 15780 | Breakpoint specific settings.\n\ |
fa8d40ab | 15781 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15782 | pending breakpoint behavior."), |
3b6acaee TT |
15783 | &breakpoint_set_cmdlist, "set breakpoint ", |
15784 | 0/*allow-unknown*/, &setlist); | |
15785 | add_show_prefix_cmd ("breakpoint", class_maintenance, _("\ | |
590042fc | 15786 | Breakpoint specific settings.\n\ |
fa8d40ab | 15787 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15788 | pending breakpoint behavior."), |
3b6acaee TT |
15789 | &breakpoint_show_cmdlist, "show breakpoint ", |
15790 | 0/*allow-unknown*/, &showlist); | |
fa8d40ab | 15791 | |
7915a72c AC |
15792 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15793 | &pending_break_support, _("\ | |
15794 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15795 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15796 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15797 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15798 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15799 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15800 | NULL, |
920d2a44 | 15801 | show_pending_break_support, |
6e1d7d6c AC |
15802 | &breakpoint_set_cmdlist, |
15803 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15804 | |
15805 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15806 | |
15807 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15808 | &automatic_hardware_breakpoints, _("\ | |
15809 | Set automatic usage of hardware breakpoints."), _("\ | |
15810 | Show automatic usage of hardware breakpoints."), _("\ | |
15811 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15812 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15813 | a warning will be emitted for such breakpoints."), | |
15814 | NULL, | |
15815 | show_automatic_hardware_breakpoints, | |
15816 | &breakpoint_set_cmdlist, | |
15817 | &breakpoint_show_cmdlist); | |
74960c60 | 15818 | |
a25a5a45 PA |
15819 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15820 | &always_inserted_mode, _("\ | |
74960c60 VP |
15821 | Set mode for inserting breakpoints."), _("\ |
15822 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15823 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15824 | they're created, kept inserted even when execution stops, and removed\n\ | |
15825 | only when the user deletes them. When this mode is off (the default),\n\ | |
15826 | breakpoints are inserted only when execution continues, and removed\n\ | |
15827 | when execution stops."), | |
72d0e2c5 YQ |
15828 | NULL, |
15829 | &show_always_inserted_mode, | |
15830 | &breakpoint_set_cmdlist, | |
15831 | &breakpoint_show_cmdlist); | |
f1310107 | 15832 | |
b775012e LM |
15833 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15834 | condition_evaluation_enums, | |
15835 | &condition_evaluation_mode_1, _("\ | |
15836 | Set mode of breakpoint condition evaluation."), _("\ | |
15837 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15838 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15839 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15840 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15841 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15842 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15843 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15844 | be set to \"gdb\""), | |
15845 | &set_condition_evaluation_mode, | |
15846 | &show_condition_evaluation_mode, | |
15847 | &breakpoint_set_cmdlist, | |
15848 | &breakpoint_show_cmdlist); | |
15849 | ||
f1310107 TJB |
15850 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15851 | Set a breakpoint for an address range.\n\ | |
15852 | break-range START-LOCATION, END-LOCATION\n\ | |
15853 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15854 | LINENUM, for that line in the current file,\n\ | |
15855 | FILE:LINENUM, for that line in that file,\n\ | |
15856 | +OFFSET, for that number of lines after the current line\n\ | |
15857 | or the start of the range\n\ | |
15858 | FUNCTION, for the first line in that function,\n\ | |
15859 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15860 | *ADDRESS, for the instruction at that address.\n\ | |
15861 | \n\ | |
15862 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15863 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15864 | range (including START-LOCATION and END-LOCATION).")); | |
15865 | ||
e7e0cddf | 15866 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15867 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15868 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15869 | location may be a linespec, explicit, or address location.\n" |
15870 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15871 | set_cmd_completer (c, location_completer); |
15872 | ||
15873 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15874 | dprintf_style_enums, &dprintf_style, _("\ | |
15875 | Set the style of usage for dynamic printf."), _("\ | |
15876 | Show the style of usage for dynamic printf."), _("\ | |
15877 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15878 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15879 | console, as with the \"printf\" command.\n\ | |
15880 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15881 | program; by default printf(), but you can choose a different function or\n\ | |
15882 | output stream by setting dprintf-function and dprintf-channel."), | |
15883 | update_dprintf_commands, NULL, | |
15884 | &setlist, &showlist); | |
15885 | ||
15886 | dprintf_function = xstrdup ("printf"); | |
15887 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15888 | &dprintf_function, _("\ | |
590042fc PW |
15889 | Set the function to use for dynamic printf."), _("\ |
15890 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15891 | update_dprintf_commands, NULL, |
15892 | &setlist, &showlist); | |
15893 | ||
15894 | dprintf_channel = xstrdup (""); | |
15895 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15896 | &dprintf_channel, _("\ | |
590042fc PW |
15897 | Set the channel to use for dynamic printf."), _("\ |
15898 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15899 | update_dprintf_commands, NULL, |
15900 | &setlist, &showlist); | |
15901 | ||
d3ce09f5 SS |
15902 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15903 | &disconnected_dprintf, _("\ | |
15904 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15905 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15906 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15907 | even if GDB disconnects or detaches from the target."), | |
15908 | NULL, | |
15909 | NULL, | |
15910 | &setlist, &showlist); | |
15911 | ||
15912 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
15913 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
15914 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
15915 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
15916 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 15917 | |
491144b5 | 15918 | automatic_hardware_breakpoints = true; |
f3b1572e | 15919 | |
76727919 TT |
15920 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15921 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15922 | } |