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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
5922befa | 4 | Copyright (C) 2019 Advanced Micro Devices, Inc. All rights reserved. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
d55e5aa6 | 22 | #include "arch-utils.h" |
4de283e4 TT |
23 | #include <ctype.h> |
24 | #include "hashtab.h" | |
25 | #include "symtab.h" | |
26 | #include "frame.h" | |
c906108c | 27 | #include "breakpoint.h" |
4de283e4 TT |
28 | #include "tracepoint.h" |
29 | #include "gdbtypes.h" | |
c906108c | 30 | #include "expression.h" |
d55e5aa6 | 31 | #include "gdbcore.h" |
4de283e4 TT |
32 | #include "gdbcmd.h" |
33 | #include "value.h" | |
34 | #include "command.h" | |
c906108c | 35 | #include "inferior.h" |
45741a9c | 36 | #include "infrun.h" |
4de283e4 TT |
37 | #include "gdbthread.h" |
38 | #include "target.h" | |
c906108c | 39 | #include "language.h" |
4de283e4 TT |
40 | #include "gdb-demangle.h" |
41 | #include "filenames.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
d55e5aa6 | 44 | #include "objfiles.h" |
4de283e4 TT |
45 | #include "source.h" |
46 | #include "linespec.h" | |
47 | #include "completer.h" | |
48 | #include "ui-out.h" | |
49 | #include "cli/cli-script.h" | |
50 | #include "block.h" | |
51 | #include "solib.h" | |
52 | #include "solist.h" | |
d55e5aa6 | 53 | #include "observable.h" |
4de283e4 TT |
54 | #include "memattr.h" |
55 | #include "ada-lang.h" | |
56 | #include "top.h" | |
57 | #include "valprint.h" | |
58 | #include "jit.h" | |
65d79d4b | 59 | #include "parser-defs.h" |
4de283e4 | 60 | #include "gdb_regex.h" |
55aa24fb | 61 | #include "probe.h" |
4de283e4 | 62 | #include "cli/cli-utils.h" |
d55e5aa6 | 63 | #include "stack.h" |
4de283e4 TT |
64 | #include "ax-gdb.h" |
65 | #include "dummy-frame.h" | |
66 | #include "interps.h" | |
268a13a5 | 67 | #include "gdbsupport/format.h" |
cfc31633 | 68 | #include "thread-fsm.h" |
5d5658a1 | 69 | #include "tid-parse.h" |
4de283e4 | 70 | #include "cli/cli-style.h" |
d3ce09f5 | 71 | |
1042e4c0 | 72 | /* readline include files */ |
073bbbb0 | 73 | #include "readline/tilde.h" |
1042e4c0 SS |
74 | |
75 | /* readline defines this. */ | |
76 | #undef savestring | |
77 | ||
034dad6f | 78 | #include "mi/mi-common.h" |
6dddc817 | 79 | #include "extension.h" |
325fac50 | 80 | #include <algorithm> |
5ed8105e | 81 | #include "progspace-and-thread.h" |
268a13a5 TT |
82 | #include "gdbsupport/array-view.h" |
83 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
896b6bda | 87 | static void map_breakpoint_numbers (const char *, |
48649e1b | 88 | gdb::function_view<void (breakpoint *)>); |
c906108c | 89 | |
348d480f PA |
90 | static void breakpoint_re_set_default (struct breakpoint *); |
91 | ||
f00aae0f KS |
92 | static void |
93 | create_sals_from_location_default (const struct event_location *location, | |
94 | struct linespec_result *canonical, | |
95 | enum bptype type_wanted); | |
983af33b SDJ |
96 | |
97 | static void create_breakpoints_sal_default (struct gdbarch *, | |
98 | struct linespec_result *, | |
e1e01040 PA |
99 | gdb::unique_xmalloc_ptr<char>, |
100 | gdb::unique_xmalloc_ptr<char>, | |
101 | enum bptype, | |
983af33b SDJ |
102 | enum bpdisp, int, int, |
103 | int, | |
104 | const struct breakpoint_ops *, | |
44f238bb | 105 | int, int, int, unsigned); |
983af33b | 106 | |
6c5b2ebe PA |
107 | static std::vector<symtab_and_line> decode_location_default |
108 | (struct breakpoint *b, const struct event_location *location, | |
109 | struct program_space *search_pspace); | |
983af33b | 110 | |
a6535de1 TT |
111 | static int can_use_hardware_watchpoint |
112 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 113 | |
a14ed312 | 114 | static void mention (struct breakpoint *); |
c906108c | 115 | |
348d480f PA |
116 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
117 | enum bptype, | |
c0a91b2b | 118 | const struct breakpoint_ops *); |
3742cc8b YQ |
119 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
120 | const struct symtab_and_line *); | |
121 | ||
4a64f543 MS |
122 | /* This function is used in gdbtk sources and thus can not be made |
123 | static. */ | |
63c252f8 | 124 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 125 | struct symtab_and_line, |
c0a91b2b TT |
126 | enum bptype, |
127 | const struct breakpoint_ops *); | |
c906108c | 128 | |
06edf0c0 PA |
129 | static struct breakpoint * |
130 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
131 | enum bptype type, | |
a1aa2221 LM |
132 | const struct breakpoint_ops *ops, |
133 | int loc_enabled); | |
06edf0c0 | 134 | |
76897487 KB |
135 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
136 | ||
a6d9a66e UW |
137 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
138 | CORE_ADDR bpaddr, | |
88f7da05 | 139 | enum bptype bptype); |
76897487 | 140 | |
6c95b8df PA |
141 | static void describe_other_breakpoints (struct gdbarch *, |
142 | struct program_space *, CORE_ADDR, | |
5af949e3 | 143 | struct obj_section *, int); |
c906108c | 144 | |
85d721b8 PA |
145 | static int watchpoint_locations_match (struct bp_location *loc1, |
146 | struct bp_location *loc2); | |
147 | ||
f1310107 | 148 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 149 | const struct address_space *aspace, |
f1310107 TJB |
150 | CORE_ADDR addr); |
151 | ||
d35ae833 | 152 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 153 | const address_space *, |
d35ae833 PA |
154 | CORE_ADDR, int); |
155 | ||
834c0d03 | 156 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 157 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 158 | |
e514a9d6 | 159 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 160 | |
a14ed312 | 161 | static int hw_breakpoint_used_count (void); |
c906108c | 162 | |
a1398e0c PA |
163 | static int hw_watchpoint_use_count (struct breakpoint *); |
164 | ||
165 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
166 | enum bptype type, | |
167 | int *other_type_used); | |
c906108c | 168 | |
816338b5 SS |
169 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
170 | int count); | |
c906108c | 171 | |
fe3f5fa8 | 172 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
173 | static void incref_bp_location (struct bp_location *loc); |
174 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 175 | |
39d61571 | 176 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 177 | |
44702360 PA |
178 | /* update_global_location_list's modes of operation wrt to whether to |
179 | insert locations now. */ | |
180 | enum ugll_insert_mode | |
181 | { | |
182 | /* Don't insert any breakpoint locations into the inferior, only | |
183 | remove already-inserted locations that no longer should be | |
184 | inserted. Functions that delete a breakpoint or breakpoints | |
185 | should specify this mode, so that deleting a breakpoint doesn't | |
186 | have the side effect of inserting the locations of other | |
187 | breakpoints that are marked not-inserted, but should_be_inserted | |
188 | returns true on them. | |
189 | ||
190 | This behavior is useful is situations close to tear-down -- e.g., | |
191 | after an exec, while the target still has execution, but | |
192 | breakpoint shadows of the previous executable image should *NOT* | |
193 | be restored to the new image; or before detaching, where the | |
194 | target still has execution and wants to delete breakpoints from | |
195 | GDB's lists, and all breakpoints had already been removed from | |
196 | the inferior. */ | |
197 | UGLL_DONT_INSERT, | |
198 | ||
a25a5a45 PA |
199 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
200 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
201 | UGLL_MAY_INSERT, |
202 | ||
a25a5a45 PA |
203 | /* Insert locations now, irrespective of |
204 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
205 | stopped right now, and the user did "continue". We need to | |
206 | insert breakpoints _before_ resuming the target, but | |
207 | UGLL_MAY_INSERT wouldn't insert them, because | |
208 | breakpoints_should_be_inserted_now returns false at that point, | |
209 | as no thread is running yet. */ | |
04086b45 | 210 | UGLL_INSERT |
44702360 PA |
211 | }; |
212 | ||
213 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 214 | |
44702360 | 215 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 216 | |
74960c60 | 217 | static void insert_breakpoint_locations (void); |
a5606eee | 218 | |
0b39b52e | 219 | static void trace_pass_command (const char *, int); |
1042e4c0 | 220 | |
558a9d82 YQ |
221 | static void set_tracepoint_count (int num); |
222 | ||
f2478a7e | 223 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 224 | |
b775012e LM |
225 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
226 | ||
983af33b SDJ |
227 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
228 | otherwise. */ | |
229 | ||
230 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 231 | |
2060206e PA |
232 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
233 | that are implemented on top of software or hardware breakpoints | |
234 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
235 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
236 | ||
237 | /* Internal breakpoints class type. */ | |
06edf0c0 | 238 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
239 | |
240 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
241 | static struct breakpoint_ops momentary_breakpoint_ops; |
242 | ||
2060206e PA |
243 | /* The breakpoint_ops structure to be used in regular user created |
244 | breakpoints. */ | |
245 | struct breakpoint_ops bkpt_breakpoint_ops; | |
246 | ||
55aa24fb SDJ |
247 | /* Breakpoints set on probes. */ |
248 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
249 | ||
bac7c5cf GB |
250 | /* Tracepoints set on probes. */ |
251 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
252 | ||
e7e0cddf | 253 | /* Dynamic printf class type. */ |
c5867ab6 | 254 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 255 | |
d3ce09f5 SS |
256 | /* The style in which to perform a dynamic printf. This is a user |
257 | option because different output options have different tradeoffs; | |
258 | if GDB does the printing, there is better error handling if there | |
259 | is a problem with any of the arguments, but using an inferior | |
260 | function lets you have special-purpose printers and sending of | |
261 | output to the same place as compiled-in print functions. */ | |
262 | ||
263 | static const char dprintf_style_gdb[] = "gdb"; | |
264 | static const char dprintf_style_call[] = "call"; | |
265 | static const char dprintf_style_agent[] = "agent"; | |
266 | static const char *const dprintf_style_enums[] = { | |
267 | dprintf_style_gdb, | |
268 | dprintf_style_call, | |
269 | dprintf_style_agent, | |
270 | NULL | |
271 | }; | |
272 | static const char *dprintf_style = dprintf_style_gdb; | |
273 | ||
274 | /* The function to use for dynamic printf if the preferred style is to | |
275 | call into the inferior. The value is simply a string that is | |
276 | copied into the command, so it can be anything that GDB can | |
277 | evaluate to a callable address, not necessarily a function name. */ | |
278 | ||
bde6261a | 279 | static char *dprintf_function; |
d3ce09f5 SS |
280 | |
281 | /* The channel to use for dynamic printf if the preferred style is to | |
282 | call into the inferior; if a nonempty string, it will be passed to | |
283 | the call as the first argument, with the format string as the | |
284 | second. As with the dprintf function, this can be anything that | |
285 | GDB knows how to evaluate, so in addition to common choices like | |
286 | "stderr", this could be an app-specific expression like | |
287 | "mystreams[curlogger]". */ | |
288 | ||
bde6261a | 289 | static char *dprintf_channel; |
d3ce09f5 SS |
290 | |
291 | /* True if dprintf commands should continue to operate even if GDB | |
292 | has disconnected. */ | |
491144b5 | 293 | static bool disconnected_dprintf = true; |
d3ce09f5 | 294 | |
5cea2a26 PA |
295 | struct command_line * |
296 | breakpoint_commands (struct breakpoint *b) | |
297 | { | |
d1b0a7bf | 298 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 299 | } |
3daf8fe5 | 300 | |
f3b1572e PA |
301 | /* Flag indicating that a command has proceeded the inferior past the |
302 | current breakpoint. */ | |
303 | ||
491144b5 | 304 | static bool breakpoint_proceeded; |
f3b1572e | 305 | |
956a9fb9 | 306 | const char * |
2cec12e5 AR |
307 | bpdisp_text (enum bpdisp disp) |
308 | { | |
4a64f543 MS |
309 | /* NOTE: the following values are a part of MI protocol and |
310 | represent values of 'disp' field returned when inferior stops at | |
311 | a breakpoint. */ | |
bc043ef3 | 312 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 313 | |
2cec12e5 AR |
314 | return bpdisps[(int) disp]; |
315 | } | |
c906108c | 316 | |
4a64f543 | 317 | /* Prototypes for exported functions. */ |
c906108c | 318 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 319 | if such is available. */ |
c906108c SS |
320 | static int can_use_hw_watchpoints; |
321 | ||
920d2a44 AC |
322 | static void |
323 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
324 | struct cmd_list_element *c, | |
325 | const char *value) | |
326 | { | |
3e43a32a MS |
327 | fprintf_filtered (file, |
328 | _("Debugger's willingness to use " | |
329 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
330 | value); |
331 | } | |
332 | ||
fa8d40ab JJ |
333 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
334 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 335 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
336 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
337 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
338 | static void |
339 | show_pending_break_support (struct ui_file *file, int from_tty, | |
340 | struct cmd_list_element *c, | |
341 | const char *value) | |
342 | { | |
3e43a32a MS |
343 | fprintf_filtered (file, |
344 | _("Debugger's behavior regarding " | |
345 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
346 | value); |
347 | } | |
fa8d40ab | 348 | |
491144b5 | 349 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 350 | set with "break" but falling in read-only memory. |
491144b5 | 351 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 352 | use hardware breakpoints. */ |
491144b5 | 353 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
354 | static void |
355 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
356 | struct cmd_list_element *c, | |
357 | const char *value) | |
358 | { | |
3e43a32a MS |
359 | fprintf_filtered (file, |
360 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
361 | value); |
362 | } | |
363 | ||
a25a5a45 PA |
364 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
365 | stopped, and immediately inserts any new breakpoints as soon as | |
366 | they're created. If off (default), GDB keeps breakpoints off of | |
367 | the target as long as possible. That is, it delays inserting | |
368 | breakpoints until the next resume, and removes them again when the | |
369 | target fully stops. This is a bit safer in case GDB crashes while | |
370 | processing user input. */ | |
5922befa LM |
371 | /* FIXME: this is a temporary workaround to make sure waves created while |
372 | all known threads are stopped, and the gdb prompt is presented, do not | |
373 | execute past the enabled breakpoints. */ | |
374 | static bool always_inserted_mode = true; | |
72d0e2c5 | 375 | |
33e5cbd6 | 376 | static void |
74960c60 | 377 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 378 | struct cmd_list_element *c, const char *value) |
74960c60 | 379 | { |
a25a5a45 PA |
380 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
381 | value); | |
74960c60 VP |
382 | } |
383 | ||
b57bacec PA |
384 | /* See breakpoint.h. */ |
385 | ||
33e5cbd6 | 386 | int |
a25a5a45 | 387 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 388 | { |
a25a5a45 PA |
389 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
390 | { | |
391 | /* If breakpoints are global, they should be inserted even if no | |
392 | thread under gdb's control is running, or even if there are | |
393 | no threads under GDB's control yet. */ | |
394 | return 1; | |
395 | } | |
396 | else if (target_has_execution) | |
397 | { | |
a25a5a45 PA |
398 | if (always_inserted_mode) |
399 | { | |
400 | /* The user wants breakpoints inserted even if all threads | |
401 | are stopped. */ | |
402 | return 1; | |
403 | } | |
404 | ||
b57bacec PA |
405 | if (threads_are_executing ()) |
406 | return 1; | |
372316f1 PA |
407 | |
408 | /* Don't remove breakpoints yet if, even though all threads are | |
409 | stopped, we still have events to process. */ | |
08036331 | 410 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
411 | if (tp->resumed |
412 | && tp->suspend.waitstatus_pending_p) | |
413 | return 1; | |
a25a5a45 PA |
414 | } |
415 | return 0; | |
33e5cbd6 | 416 | } |
765dc015 | 417 | |
b775012e LM |
418 | static const char condition_evaluation_both[] = "host or target"; |
419 | ||
420 | /* Modes for breakpoint condition evaluation. */ | |
421 | static const char condition_evaluation_auto[] = "auto"; | |
422 | static const char condition_evaluation_host[] = "host"; | |
423 | static const char condition_evaluation_target[] = "target"; | |
424 | static const char *const condition_evaluation_enums[] = { | |
425 | condition_evaluation_auto, | |
426 | condition_evaluation_host, | |
427 | condition_evaluation_target, | |
428 | NULL | |
429 | }; | |
430 | ||
431 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
432 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
433 | ||
434 | /* Global that we use to display information to the user (gets its value from | |
435 | condition_evaluation_mode_1. */ | |
436 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
437 | ||
438 | /* Translate a condition evaluation mode MODE into either "host" | |
439 | or "target". This is used mostly to translate from "auto" to the | |
440 | real setting that is being used. It returns the translated | |
441 | evaluation mode. */ | |
442 | ||
443 | static const char * | |
444 | translate_condition_evaluation_mode (const char *mode) | |
445 | { | |
446 | if (mode == condition_evaluation_auto) | |
447 | { | |
448 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
449 | return condition_evaluation_target; | |
450 | else | |
451 | return condition_evaluation_host; | |
452 | } | |
453 | else | |
454 | return mode; | |
455 | } | |
456 | ||
457 | /* Discovers what condition_evaluation_auto translates to. */ | |
458 | ||
459 | static const char * | |
460 | breakpoint_condition_evaluation_mode (void) | |
461 | { | |
462 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
463 | } | |
464 | ||
465 | /* Return true if GDB should evaluate breakpoint conditions or false | |
466 | otherwise. */ | |
467 | ||
468 | static int | |
469 | gdb_evaluates_breakpoint_condition_p (void) | |
470 | { | |
471 | const char *mode = breakpoint_condition_evaluation_mode (); | |
472 | ||
473 | return (mode == condition_evaluation_host); | |
474 | } | |
475 | ||
c906108c SS |
476 | /* Are we executing breakpoint commands? */ |
477 | static int executing_breakpoint_commands; | |
478 | ||
c02f5703 MS |
479 | /* Are overlay event breakpoints enabled? */ |
480 | static int overlay_events_enabled; | |
481 | ||
e09342b5 | 482 | /* See description in breakpoint.h. */ |
491144b5 | 483 | bool target_exact_watchpoints = false; |
e09342b5 | 484 | |
c906108c | 485 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 486 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 487 | current breakpoint. */ |
c906108c | 488 | |
5c44784c | 489 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 490 | |
5c44784c JM |
491 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
492 | for (B = breakpoint_chain; \ | |
493 | B ? (TMP=B->next, 1): 0; \ | |
494 | B = TMP) | |
c906108c | 495 | |
4a64f543 MS |
496 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
497 | not provided so update_global_location_list must not be called | |
498 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 499 | |
876fa593 | 500 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
501 | for (BP_TMP = bp_locations; \ |
502 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 503 | BP_TMP++) |
7cc221ef | 504 | |
b775012e LM |
505 | /* Iterates through locations with address ADDRESS for the currently selected |
506 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
507 | to where the loop should start from. | |
508 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
509 | appropriate location to start with. */ | |
510 | ||
511 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
512 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
513 | BP_LOCP_TMP = BP_LOCP_START; \ | |
514 | BP_LOCP_START \ | |
f5336ca5 | 515 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
516 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
517 | BP_LOCP_TMP++) | |
518 | ||
1042e4c0 SS |
519 | /* Iterator for tracepoints only. */ |
520 | ||
521 | #define ALL_TRACEPOINTS(B) \ | |
522 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 523 | if (is_tracepoint (B)) |
1042e4c0 | 524 | |
7cc221ef | 525 | /* Chains of all breakpoints defined. */ |
c906108c | 526 | |
81e6b8eb | 527 | static struct breakpoint *breakpoint_chain; |
c906108c | 528 | |
39ef2f62 | 529 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 530 | |
f5336ca5 | 531 | static struct bp_location **bp_locations; |
876fa593 | 532 | |
f5336ca5 | 533 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 534 | |
f5336ca5 | 535 | static unsigned bp_locations_count; |
876fa593 | 536 | |
4a64f543 | 537 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 538 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 539 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 540 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 541 | an address you need to read. */ |
876fa593 | 542 | |
f5336ca5 | 543 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 544 | |
4a64f543 MS |
545 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
546 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
547 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
548 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 549 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 550 | |
f5336ca5 | 551 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 552 | |
4a64f543 | 553 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
554 | from the bp_locations array, but for which a hit may still be |
555 | reported by a target. */ | |
1123588c | 556 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 557 | |
c906108c SS |
558 | /* Number of last breakpoint made. */ |
559 | ||
95a42b64 TT |
560 | static int breakpoint_count; |
561 | ||
86b17b60 PA |
562 | /* The value of `breakpoint_count' before the last command that |
563 | created breakpoints. If the last (break-like) command created more | |
564 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
565 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
566 | static int prev_breakpoint_count; | |
c906108c | 567 | |
1042e4c0 SS |
568 | /* Number of last tracepoint made. */ |
569 | ||
95a42b64 | 570 | static int tracepoint_count; |
1042e4c0 | 571 | |
6149aea9 PA |
572 | static struct cmd_list_element *breakpoint_set_cmdlist; |
573 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 574 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 575 | |
badd37ce SDJ |
576 | /* See declaration at breakpoint.h. */ |
577 | ||
578 | struct breakpoint * | |
579 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
580 | void *user_data) | |
581 | { | |
582 | struct breakpoint *b = NULL; | |
583 | ||
584 | ALL_BREAKPOINTS (b) | |
585 | { | |
586 | if (func (b, user_data) != 0) | |
587 | break; | |
588 | } | |
589 | ||
590 | return b; | |
591 | } | |
592 | ||
468d015d JJ |
593 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
594 | static int | |
595 | breakpoint_enabled (struct breakpoint *b) | |
596 | { | |
0d381245 | 597 | return (b->enable_state == bp_enabled); |
468d015d JJ |
598 | } |
599 | ||
c906108c SS |
600 | /* Set breakpoint count to NUM. */ |
601 | ||
95a42b64 | 602 | static void |
fba45db2 | 603 | set_breakpoint_count (int num) |
c906108c | 604 | { |
86b17b60 | 605 | prev_breakpoint_count = breakpoint_count; |
c906108c | 606 | breakpoint_count = num; |
4fa62494 | 607 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
608 | } |
609 | ||
86b17b60 PA |
610 | /* Used by `start_rbreak_breakpoints' below, to record the current |
611 | breakpoint count before "rbreak" creates any breakpoint. */ | |
612 | static int rbreak_start_breakpoint_count; | |
613 | ||
95a42b64 TT |
614 | /* Called at the start an "rbreak" command to record the first |
615 | breakpoint made. */ | |
86b17b60 | 616 | |
c80049d3 | 617 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 618 | { |
86b17b60 | 619 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
620 | } |
621 | ||
622 | /* Called at the end of an "rbreak" command to record the last | |
623 | breakpoint made. */ | |
86b17b60 | 624 | |
c80049d3 | 625 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 626 | { |
86b17b60 | 627 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
628 | } |
629 | ||
4a64f543 | 630 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
631 | |
632 | void | |
fba45db2 | 633 | clear_breakpoint_hit_counts (void) |
c906108c SS |
634 | { |
635 | struct breakpoint *b; | |
636 | ||
637 | ALL_BREAKPOINTS (b) | |
638 | b->hit_count = 0; | |
639 | } | |
640 | ||
c906108c | 641 | \f |
48cb2d85 VP |
642 | /* Return the breakpoint with the specified number, or NULL |
643 | if the number does not refer to an existing breakpoint. */ | |
644 | ||
645 | struct breakpoint * | |
646 | get_breakpoint (int num) | |
647 | { | |
648 | struct breakpoint *b; | |
649 | ||
650 | ALL_BREAKPOINTS (b) | |
651 | if (b->number == num) | |
652 | return b; | |
653 | ||
654 | return NULL; | |
655 | } | |
5c44784c | 656 | |
c906108c | 657 | \f |
adc36818 | 658 | |
b775012e LM |
659 | /* Mark locations as "conditions have changed" in case the target supports |
660 | evaluating conditions on its side. */ | |
661 | ||
662 | static void | |
663 | mark_breakpoint_modified (struct breakpoint *b) | |
664 | { | |
665 | struct bp_location *loc; | |
666 | ||
667 | /* This is only meaningful if the target is | |
668 | evaluating conditions and if the user has | |
669 | opted for condition evaluation on the target's | |
670 | side. */ | |
671 | if (gdb_evaluates_breakpoint_condition_p () | |
672 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
673 | return; | |
674 | ||
675 | if (!is_breakpoint (b)) | |
676 | return; | |
677 | ||
678 | for (loc = b->loc; loc; loc = loc->next) | |
679 | loc->condition_changed = condition_modified; | |
680 | } | |
681 | ||
682 | /* Mark location as "conditions have changed" in case the target supports | |
683 | evaluating conditions on its side. */ | |
684 | ||
685 | static void | |
686 | mark_breakpoint_location_modified (struct bp_location *loc) | |
687 | { | |
688 | /* This is only meaningful if the target is | |
689 | evaluating conditions and if the user has | |
690 | opted for condition evaluation on the target's | |
691 | side. */ | |
692 | if (gdb_evaluates_breakpoint_condition_p () | |
693 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
694 | ||
695 | return; | |
696 | ||
697 | if (!is_breakpoint (loc->owner)) | |
698 | return; | |
699 | ||
700 | loc->condition_changed = condition_modified; | |
701 | } | |
702 | ||
703 | /* Sets the condition-evaluation mode using the static global | |
704 | condition_evaluation_mode. */ | |
705 | ||
706 | static void | |
eb4c3f4a | 707 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
708 | struct cmd_list_element *c) |
709 | { | |
b775012e LM |
710 | const char *old_mode, *new_mode; |
711 | ||
712 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
713 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
714 | { | |
715 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
716 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
717 | "Using host evaluation mode instead.")); | |
718 | return; | |
719 | } | |
720 | ||
721 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
722 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
723 | ||
abf1152a JK |
724 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
725 | settings was "auto". */ | |
726 | condition_evaluation_mode = condition_evaluation_mode_1; | |
727 | ||
b775012e LM |
728 | /* Only update the mode if the user picked a different one. */ |
729 | if (new_mode != old_mode) | |
730 | { | |
731 | struct bp_location *loc, **loc_tmp; | |
732 | /* If the user switched to a different evaluation mode, we | |
733 | need to synch the changes with the target as follows: | |
734 | ||
735 | "host" -> "target": Send all (valid) conditions to the target. | |
736 | "target" -> "host": Remove all the conditions from the target. | |
737 | */ | |
738 | ||
b775012e LM |
739 | if (new_mode == condition_evaluation_target) |
740 | { | |
741 | /* Mark everything modified and synch conditions with the | |
742 | target. */ | |
743 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
744 | mark_breakpoint_location_modified (loc); | |
745 | } | |
746 | else | |
747 | { | |
748 | /* Manually mark non-duplicate locations to synch conditions | |
749 | with the target. We do this to remove all the conditions the | |
750 | target knows about. */ | |
751 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
752 | if (is_breakpoint (loc->owner) && loc->inserted) | |
753 | loc->needs_update = 1; | |
754 | } | |
755 | ||
756 | /* Do the update. */ | |
44702360 | 757 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
758 | } |
759 | ||
760 | return; | |
761 | } | |
762 | ||
763 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
764 | what "auto" is translating to. */ | |
765 | ||
766 | static void | |
767 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
768 | struct cmd_list_element *c, const char *value) | |
769 | { | |
770 | if (condition_evaluation_mode == condition_evaluation_auto) | |
771 | fprintf_filtered (file, | |
772 | _("Breakpoint condition evaluation " | |
773 | "mode is %s (currently %s).\n"), | |
774 | value, | |
775 | breakpoint_condition_evaluation_mode ()); | |
776 | else | |
777 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
778 | value); | |
779 | } | |
780 | ||
781 | /* A comparison function for bp_location AP and BP that is used by | |
782 | bsearch. This comparison function only cares about addresses, unlike | |
39ef2f62 | 783 | the more general bp_location_is_less_than function. */ |
b775012e LM |
784 | |
785 | static int | |
f5336ca5 | 786 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 787 | { |
9a3c8263 SM |
788 | const struct bp_location *a = *(const struct bp_location **) ap; |
789 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
790 | |
791 | if (a->address == b->address) | |
792 | return 0; | |
793 | else | |
794 | return ((a->address > b->address) - (a->address < b->address)); | |
795 | } | |
796 | ||
797 | /* Helper function to skip all bp_locations with addresses | |
798 | less than ADDRESS. It returns the first bp_location that | |
799 | is greater than or equal to ADDRESS. If none is found, just | |
800 | return NULL. */ | |
801 | ||
802 | static struct bp_location ** | |
803 | get_first_locp_gte_addr (CORE_ADDR address) | |
804 | { | |
805 | struct bp_location dummy_loc; | |
806 | struct bp_location *dummy_locp = &dummy_loc; | |
807 | struct bp_location **locp_found = NULL; | |
808 | ||
809 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
810 | dummy_loc.address = address; |
811 | ||
812 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 813 | locp_found = ((struct bp_location **) |
f5336ca5 | 814 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 815 | sizeof (struct bp_location **), |
f5336ca5 | 816 | bp_locations_compare_addrs)); |
b775012e LM |
817 | |
818 | /* Nothing was found, nothing left to do. */ | |
819 | if (locp_found == NULL) | |
820 | return NULL; | |
821 | ||
822 | /* We may have found a location that is at ADDRESS but is not the first in the | |
823 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 824 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
825 | && (*(locp_found - 1))->address == address) |
826 | locp_found--; | |
827 | ||
828 | return locp_found; | |
829 | } | |
830 | ||
adc36818 | 831 | void |
7a26bd4d | 832 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
833 | int from_tty) |
834 | { | |
3a5c3e22 PA |
835 | xfree (b->cond_string); |
836 | b->cond_string = NULL; | |
adc36818 | 837 | |
3a5c3e22 | 838 | if (is_watchpoint (b)) |
adc36818 | 839 | { |
3a5c3e22 PA |
840 | struct watchpoint *w = (struct watchpoint *) b; |
841 | ||
4d01a485 | 842 | w->cond_exp.reset (); |
3a5c3e22 PA |
843 | } |
844 | else | |
845 | { | |
846 | struct bp_location *loc; | |
847 | ||
848 | for (loc = b->loc; loc; loc = loc->next) | |
849 | { | |
4d01a485 | 850 | loc->cond.reset (); |
b775012e LM |
851 | |
852 | /* No need to free the condition agent expression | |
853 | bytecode (if we have one). We will handle this | |
854 | when we go through update_global_location_list. */ | |
3a5c3e22 | 855 | } |
adc36818 | 856 | } |
adc36818 PM |
857 | |
858 | if (*exp == 0) | |
859 | { | |
860 | if (from_tty) | |
861 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
862 | } | |
863 | else | |
864 | { | |
bbc13ae3 | 865 | const char *arg = exp; |
cc59ec59 | 866 | |
adc36818 PM |
867 | /* I don't know if it matters whether this is the string the user |
868 | typed in or the decompiled expression. */ | |
869 | b->cond_string = xstrdup (arg); | |
870 | b->condition_not_parsed = 0; | |
871 | ||
872 | if (is_watchpoint (b)) | |
873 | { | |
3a5c3e22 PA |
874 | struct watchpoint *w = (struct watchpoint *) b; |
875 | ||
699bd4cf | 876 | innermost_block_tracker tracker; |
adc36818 | 877 | arg = exp; |
699bd4cf | 878 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
adc36818 PM |
879 | if (*arg) |
880 | error (_("Junk at end of expression")); | |
699bd4cf | 881 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
882 | } |
883 | else | |
884 | { | |
3a5c3e22 PA |
885 | struct bp_location *loc; |
886 | ||
adc36818 PM |
887 | for (loc = b->loc; loc; loc = loc->next) |
888 | { | |
889 | arg = exp; | |
890 | loc->cond = | |
1bb9788d TT |
891 | parse_exp_1 (&arg, loc->address, |
892 | block_for_pc (loc->address), 0); | |
adc36818 PM |
893 | if (*arg) |
894 | error (_("Junk at end of expression")); | |
895 | } | |
896 | } | |
897 | } | |
b775012e LM |
898 | mark_breakpoint_modified (b); |
899 | ||
76727919 | 900 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
901 | } |
902 | ||
d55637df TT |
903 | /* Completion for the "condition" command. */ |
904 | ||
eb3ff9a5 | 905 | static void |
6f937416 | 906 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 907 | completion_tracker &tracker, |
6f937416 | 908 | const char *text, const char *word) |
d55637df | 909 | { |
6f937416 | 910 | const char *space; |
d55637df | 911 | |
f1735a53 TT |
912 | text = skip_spaces (text); |
913 | space = skip_to_space (text); | |
d55637df TT |
914 | if (*space == '\0') |
915 | { | |
916 | int len; | |
917 | struct breakpoint *b; | |
d55637df TT |
918 | |
919 | if (text[0] == '$') | |
920 | { | |
921 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
922 | if (!isdigit (text[1])) |
923 | complete_internalvar (tracker, &text[1]); | |
924 | return; | |
d55637df TT |
925 | } |
926 | ||
927 | /* We're completing the breakpoint number. */ | |
928 | len = strlen (text); | |
929 | ||
930 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
931 | { |
932 | char number[50]; | |
933 | ||
934 | xsnprintf (number, sizeof (number), "%d", b->number); | |
935 | ||
936 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 937 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 938 | } |
d55637df | 939 | |
eb3ff9a5 | 940 | return; |
d55637df TT |
941 | } |
942 | ||
943 | /* We're completing the expression part. */ | |
f1735a53 | 944 | text = skip_spaces (space); |
eb3ff9a5 | 945 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
946 | } |
947 | ||
c906108c SS |
948 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
949 | ||
950 | static void | |
0b39b52e | 951 | condition_command (const char *arg, int from_tty) |
c906108c | 952 | { |
52f0bd74 | 953 | struct breakpoint *b; |
0b39b52e | 954 | const char *p; |
52f0bd74 | 955 | int bnum; |
c906108c SS |
956 | |
957 | if (arg == 0) | |
e2e0b3e5 | 958 | error_no_arg (_("breakpoint number")); |
c906108c SS |
959 | |
960 | p = arg; | |
961 | bnum = get_number (&p); | |
5c44784c | 962 | if (bnum == 0) |
8a3fe4f8 | 963 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
964 | |
965 | ALL_BREAKPOINTS (b) | |
966 | if (b->number == bnum) | |
2f069f6f | 967 | { |
6dddc817 DE |
968 | /* Check if this breakpoint has a "stop" method implemented in an |
969 | extension language. This method and conditions entered into GDB | |
970 | from the CLI are mutually exclusive. */ | |
971 | const struct extension_language_defn *extlang | |
972 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
973 | ||
974 | if (extlang != NULL) | |
975 | { | |
976 | error (_("Only one stop condition allowed. There is currently" | |
977 | " a %s stop condition defined for this breakpoint."), | |
978 | ext_lang_capitalized_name (extlang)); | |
979 | } | |
2566ad2d | 980 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
981 | |
982 | if (is_breakpoint (b)) | |
44702360 | 983 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 984 | |
2f069f6f JB |
985 | return; |
986 | } | |
c906108c | 987 | |
8a3fe4f8 | 988 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
989 | } |
990 | ||
a7bdde9e VP |
991 | /* Check that COMMAND do not contain commands that are suitable |
992 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
993 | Throw if any such commands is found. */ |
994 | ||
a7bdde9e VP |
995 | static void |
996 | check_no_tracepoint_commands (struct command_line *commands) | |
997 | { | |
998 | struct command_line *c; | |
cc59ec59 | 999 | |
a7bdde9e VP |
1000 | for (c = commands; c; c = c->next) |
1001 | { | |
a7bdde9e | 1002 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1003 | error (_("The 'while-stepping' command can " |
1004 | "only be used for tracepoints")); | |
a7bdde9e | 1005 | |
12973681 TT |
1006 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1007 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1008 | |
1009 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1010 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1011 | command directly. */ |
1012 | if (strstr (c->line, "collect ") == c->line) | |
1013 | error (_("The 'collect' command can only be used for tracepoints")); | |
1014 | ||
51661e93 VP |
1015 | if (strstr (c->line, "teval ") == c->line) |
1016 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1017 | } |
1018 | } | |
1019 | ||
c1fc2657 | 1020 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1021 | { |
c1fc2657 | 1022 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1023 | }; |
1024 | ||
d77f58be SS |
1025 | /* Encapsulate tests for different types of tracepoints. */ |
1026 | ||
3b0871f4 SM |
1027 | static bool |
1028 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1029 | { |
1030 | return (type == bp_tracepoint | |
1031 | || type == bp_fast_tracepoint | |
1032 | || type == bp_static_tracepoint); | |
1033 | } | |
1034 | ||
3b0871f4 SM |
1035 | static bool |
1036 | is_longjmp_type (bptype type) | |
1037 | { | |
1038 | return type == bp_longjmp || type == bp_exception; | |
1039 | } | |
1040 | ||
f2478a7e SM |
1041 | /* See breakpoint.h. */ |
1042 | ||
1043 | bool | |
d77f58be | 1044 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1045 | { |
d9b3f62e | 1046 | return is_tracepoint_type (b->type); |
a7bdde9e | 1047 | } |
d9b3f62e | 1048 | |
a5e364af SM |
1049 | /* Factory function to create an appropriate instance of breakpoint given |
1050 | TYPE. */ | |
1051 | ||
1052 | static std::unique_ptr<breakpoint> | |
1053 | new_breakpoint_from_type (bptype type) | |
1054 | { | |
1055 | breakpoint *b; | |
1056 | ||
1057 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1058 | b = new tracepoint (); |
3b0871f4 | 1059 | else if (is_longjmp_type (type)) |
c1fc2657 | 1060 | b = new longjmp_breakpoint (); |
a5e364af SM |
1061 | else |
1062 | b = new breakpoint (); | |
1063 | ||
1064 | return std::unique_ptr<breakpoint> (b); | |
1065 | } | |
1066 | ||
e5dd4106 | 1067 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1068 | breakpoint. This function will throw an exception if a problem is |
1069 | found. */ | |
48cb2d85 | 1070 | |
95a42b64 TT |
1071 | static void |
1072 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1073 | struct command_line *commands) | |
48cb2d85 | 1074 | { |
d77f58be | 1075 | if (is_tracepoint (b)) |
a7bdde9e | 1076 | { |
c9a6ce02 | 1077 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1078 | struct command_line *c; |
1079 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1080 | |
1081 | /* Reset the while-stepping step count. The previous commands | |
1082 | might have included a while-stepping action, while the new | |
1083 | ones might not. */ | |
1084 | t->step_count = 0; | |
1085 | ||
1086 | /* We need to verify that each top-level element of commands is | |
1087 | valid for tracepoints, that there's at most one | |
1088 | while-stepping element, and that the while-stepping's body | |
1089 | has valid tracing commands excluding nested while-stepping. | |
1090 | We also need to validate the tracepoint action line in the | |
1091 | context of the tracepoint --- validate_actionline actually | |
1092 | has side effects, like setting the tracepoint's | |
1093 | while-stepping STEP_COUNT, in addition to checking if the | |
1094 | collect/teval actions parse and make sense in the | |
1095 | tracepoint's context. */ | |
a7bdde9e VP |
1096 | for (c = commands; c; c = c->next) |
1097 | { | |
a7bdde9e VP |
1098 | if (c->control_type == while_stepping_control) |
1099 | { | |
1100 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1101 | error (_("The 'while-stepping' command " |
1102 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1103 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1104 | error (_("The 'while-stepping' command " |
1105 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1106 | |
1107 | if (while_stepping) | |
3e43a32a MS |
1108 | error (_("The 'while-stepping' command " |
1109 | "can be used only once")); | |
a7bdde9e VP |
1110 | else |
1111 | while_stepping = c; | |
1112 | } | |
c9a6ce02 PA |
1113 | |
1114 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1115 | } |
1116 | if (while_stepping) | |
1117 | { | |
1118 | struct command_line *c2; | |
1119 | ||
12973681 TT |
1120 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1121 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1122 | for (; c2; c2 = c2->next) |
1123 | { | |
a7bdde9e VP |
1124 | if (c2->control_type == while_stepping_control) |
1125 | error (_("The 'while-stepping' command cannot be nested")); | |
1126 | } | |
1127 | } | |
1128 | } | |
1129 | else | |
1130 | { | |
1131 | check_no_tracepoint_commands (commands); | |
1132 | } | |
95a42b64 TT |
1133 | } |
1134 | ||
0fb4aa4b PA |
1135 | /* Return a vector of all the static tracepoints set at ADDR. The |
1136 | caller is responsible for releasing the vector. */ | |
1137 | ||
f51e0e20 | 1138 | std::vector<breakpoint *> |
0fb4aa4b PA |
1139 | static_tracepoints_here (CORE_ADDR addr) |
1140 | { | |
1141 | struct breakpoint *b; | |
f51e0e20 | 1142 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1143 | struct bp_location *loc; |
1144 | ||
1145 | ALL_BREAKPOINTS (b) | |
1146 | if (b->type == bp_static_tracepoint) | |
1147 | { | |
1148 | for (loc = b->loc; loc; loc = loc->next) | |
1149 | if (loc->address == addr) | |
f51e0e20 | 1150 | found.push_back (b); |
0fb4aa4b PA |
1151 | } |
1152 | ||
1153 | return found; | |
1154 | } | |
1155 | ||
95a42b64 | 1156 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1157 | validate that only allowed commands are included. */ |
95a42b64 TT |
1158 | |
1159 | void | |
4a64f543 | 1160 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1161 | counted_command_line &&commands) |
95a42b64 | 1162 | { |
93921405 | 1163 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1164 | |
d1b0a7bf | 1165 | b->commands = std::move (commands); |
76727919 | 1166 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1167 | } |
1168 | ||
45a43567 TT |
1169 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1170 | is not the same as the "silent" that may appear in the breakpoint's | |
1171 | commands. */ | |
1172 | ||
1173 | void | |
1174 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1175 | { | |
1176 | int old_silent = b->silent; | |
1177 | ||
1178 | b->silent = silent; | |
1179 | if (old_silent != silent) | |
76727919 | 1180 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1181 | } |
1182 | ||
1183 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1184 | breakpoint work for any thread. */ | |
1185 | ||
1186 | void | |
1187 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1188 | { | |
1189 | int old_thread = b->thread; | |
1190 | ||
1191 | b->thread = thread; | |
1192 | if (old_thread != thread) | |
76727919 | 1193 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1194 | } |
1195 | ||
1196 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1197 | breakpoint work for any task. */ | |
1198 | ||
1199 | void | |
1200 | breakpoint_set_task (struct breakpoint *b, int task) | |
1201 | { | |
1202 | int old_task = b->task; | |
1203 | ||
1204 | b->task = task; | |
1205 | if (old_task != task) | |
76727919 | 1206 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1207 | } |
1208 | ||
95a42b64 | 1209 | static void |
896b6bda | 1210 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1211 | struct command_line *control) |
95a42b64 | 1212 | { |
d1b0a7bf | 1213 | counted_command_line cmd; |
999700cd PW |
1214 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1215 | NULL after the call to read_command_lines if the user provides an empty | |
1216 | list of command by just typing "end". */ | |
1217 | bool cmd_read = false; | |
95a42b64 | 1218 | |
896b6bda PA |
1219 | std::string new_arg; |
1220 | ||
95a42b64 TT |
1221 | if (arg == NULL || !*arg) |
1222 | { | |
86b17b60 | 1223 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1224 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1225 | breakpoint_count); | |
95a42b64 | 1226 | else if (breakpoint_count > 0) |
896b6bda | 1227 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1228 | arg = new_arg.c_str (); |
1229 | } | |
1230 | ||
1231 | map_breakpoint_numbers | |
1232 | (arg, [&] (breakpoint *b) | |
1233 | { | |
999700cd | 1234 | if (!cmd_read) |
48649e1b | 1235 | { |
999700cd | 1236 | gdb_assert (cmd == NULL); |
48649e1b | 1237 | if (control != NULL) |
12973681 | 1238 | cmd = control->body_list_0; |
48649e1b TT |
1239 | else |
1240 | { | |
81b1e71c TT |
1241 | std::string str |
1242 | = string_printf (_("Type commands for breakpoint(s) " | |
1243 | "%s, one per line."), | |
1244 | arg); | |
48649e1b | 1245 | |
60b3cef2 TT |
1246 | auto do_validate = [=] (const char *line) |
1247 | { | |
1248 | validate_actionline (line, b); | |
1249 | }; | |
1250 | gdb::function_view<void (const char *)> validator; | |
1251 | if (is_tracepoint (b)) | |
1252 | validator = do_validate; | |
1253 | ||
1254 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1255 | } |
999700cd | 1256 | cmd_read = true; |
48649e1b TT |
1257 | } |
1258 | ||
1259 | /* If a breakpoint was on the list more than once, we don't need to | |
1260 | do anything. */ | |
1261 | if (b->commands != cmd) | |
1262 | { | |
d1b0a7bf | 1263 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1264 | b->commands = cmd; |
76727919 | 1265 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1266 | } |
1267 | }); | |
95a42b64 TT |
1268 | } |
1269 | ||
1270 | static void | |
0b39b52e | 1271 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1272 | { |
1273 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1274 | } |
40c03ae8 EZ |
1275 | |
1276 | /* Like commands_command, but instead of reading the commands from | |
1277 | input stream, takes them from an already parsed command structure. | |
1278 | ||
1279 | This is used by cli-script.c to DTRT with breakpoint commands | |
1280 | that are part of if and while bodies. */ | |
1281 | enum command_control_type | |
896b6bda | 1282 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1283 | { |
95a42b64 TT |
1284 | commands_command_1 (arg, 0, cmd); |
1285 | return simple_control; | |
40c03ae8 | 1286 | } |
876fa593 JK |
1287 | |
1288 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1289 | ||
1290 | static int | |
1291 | bp_location_has_shadow (struct bp_location *bl) | |
1292 | { | |
1293 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1294 | return 0; | |
1295 | if (!bl->inserted) | |
1296 | return 0; | |
1297 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1298 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1299 | return 0; |
1300 | return 1; | |
1301 | } | |
1302 | ||
9d497a19 PA |
1303 | /* Update BUF, which is LEN bytes read from the target address |
1304 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1305 | contents. | |
1306 | ||
1307 | If READBUF is not NULL, this buffer must not overlap with the of | |
1308 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1309 | failed assertion internal error will be raised. */ | |
1310 | ||
1311 | static void | |
1312 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1313 | const gdb_byte *writebuf_org, | |
1314 | ULONGEST memaddr, LONGEST len, | |
1315 | struct bp_target_info *target_info, | |
1316 | struct gdbarch *gdbarch) | |
1317 | { | |
1318 | /* Now do full processing of the found relevant range of elements. */ | |
1319 | CORE_ADDR bp_addr = 0; | |
1320 | int bp_size = 0; | |
1321 | int bptoffset = 0; | |
1322 | ||
1323 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1324 | current_program_space->aspace, 0)) | |
1325 | { | |
1326 | /* The breakpoint is inserted in a different address space. */ | |
1327 | return; | |
1328 | } | |
1329 | ||
1330 | /* Addresses and length of the part of the breakpoint that | |
1331 | we need to copy. */ | |
1332 | bp_addr = target_info->placed_address; | |
1333 | bp_size = target_info->shadow_len; | |
1334 | ||
1335 | if (bp_addr + bp_size <= memaddr) | |
1336 | { | |
1337 | /* The breakpoint is entirely before the chunk of memory we are | |
1338 | reading. */ | |
1339 | return; | |
1340 | } | |
1341 | ||
1342 | if (bp_addr >= memaddr + len) | |
1343 | { | |
1344 | /* The breakpoint is entirely after the chunk of memory we are | |
1345 | reading. */ | |
1346 | return; | |
1347 | } | |
1348 | ||
1349 | /* Offset within shadow_contents. */ | |
1350 | if (bp_addr < memaddr) | |
1351 | { | |
1352 | /* Only copy the second part of the breakpoint. */ | |
1353 | bp_size -= memaddr - bp_addr; | |
1354 | bptoffset = memaddr - bp_addr; | |
1355 | bp_addr = memaddr; | |
1356 | } | |
1357 | ||
1358 | if (bp_addr + bp_size > memaddr + len) | |
1359 | { | |
1360 | /* Only copy the first part of the breakpoint. */ | |
1361 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1362 | } | |
1363 | ||
1364 | if (readbuf != NULL) | |
1365 | { | |
1366 | /* Verify that the readbuf buffer does not overlap with the | |
1367 | shadow_contents buffer. */ | |
1368 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1369 | || readbuf >= (target_info->shadow_contents | |
1370 | + target_info->shadow_len)); | |
1371 | ||
1372 | /* Update the read buffer with this inserted breakpoint's | |
1373 | shadow. */ | |
1374 | memcpy (readbuf + bp_addr - memaddr, | |
1375 | target_info->shadow_contents + bptoffset, bp_size); | |
1376 | } | |
1377 | else | |
1378 | { | |
1379 | const unsigned char *bp; | |
0d5ed153 MR |
1380 | CORE_ADDR addr = target_info->reqstd_address; |
1381 | int placed_size; | |
9d497a19 PA |
1382 | |
1383 | /* Update the shadow with what we want to write to memory. */ | |
1384 | memcpy (target_info->shadow_contents + bptoffset, | |
1385 | writebuf_org + bp_addr - memaddr, bp_size); | |
1386 | ||
1387 | /* Determine appropriate breakpoint contents and size for this | |
1388 | address. */ | |
0d5ed153 | 1389 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1390 | |
1391 | /* Update the final write buffer with this inserted | |
1392 | breakpoint's INSN. */ | |
1393 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1394 | } | |
1395 | } | |
1396 | ||
8defab1a | 1397 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1398 | by replacing any memory breakpoints with their shadowed contents. |
1399 | ||
35c63cd8 JB |
1400 | If READBUF is not NULL, this buffer must not overlap with any of |
1401 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1402 | a failed assertion internal error will be raised. | |
1403 | ||
876fa593 | 1404 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1405 | bl->address - bp_locations_placed_address_before_address_max |
1406 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1407 | The range we were requested to resolve shadows for is: |
1408 | memaddr ... memaddr + len | |
1409 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1410 | memaddr + len <= (bl->address |
f5336ca5 | 1411 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1412 | and: |
f5336ca5 | 1413 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1414 | |
8defab1a | 1415 | void |
f0ba3972 PA |
1416 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1417 | const gdb_byte *writebuf_org, | |
1418 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1419 | { |
4a64f543 MS |
1420 | /* Left boundary, right boundary and median element of our binary |
1421 | search. */ | |
876fa593 JK |
1422 | unsigned bc_l, bc_r, bc; |
1423 | ||
4a64f543 MS |
1424 | /* Find BC_L which is a leftmost element which may affect BUF |
1425 | content. It is safe to report lower value but a failure to | |
1426 | report higher one. */ | |
876fa593 JK |
1427 | |
1428 | bc_l = 0; | |
f5336ca5 | 1429 | bc_r = bp_locations_count; |
876fa593 JK |
1430 | while (bc_l + 1 < bc_r) |
1431 | { | |
35df4500 | 1432 | struct bp_location *bl; |
876fa593 JK |
1433 | |
1434 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1435 | bl = bp_locations[bc]; |
876fa593 | 1436 | |
4a64f543 MS |
1437 | /* Check first BL->ADDRESS will not overflow due to the added |
1438 | constant. Then advance the left boundary only if we are sure | |
1439 | the BC element can in no way affect the BUF content (MEMADDR | |
1440 | to MEMADDR + LEN range). | |
876fa593 | 1441 | |
f5336ca5 | 1442 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1443 | offset so that we cannot miss a breakpoint with its shadow |
1444 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1445 | |
f5336ca5 | 1446 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1447 | >= bl->address) |
f5336ca5 | 1448 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1449 | <= memaddr)) |
876fa593 JK |
1450 | bc_l = bc; |
1451 | else | |
1452 | bc_r = bc; | |
1453 | } | |
1454 | ||
128070bb PA |
1455 | /* Due to the binary search above, we need to make sure we pick the |
1456 | first location that's at BC_L's address. E.g., if there are | |
1457 | multiple locations at the same address, BC_L may end up pointing | |
1458 | at a duplicate location, and miss the "master"/"inserted" | |
1459 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1460 | B: | |
1461 | ||
1462 | L1@A, L2@A, L3@B, ... | |
1463 | ||
1464 | BC_L could end up pointing at location L2, while the "master" | |
1465 | location could be L1. Since the `loc->inserted' flag is only set | |
1466 | on "master" locations, we'd forget to restore the shadow of L1 | |
1467 | and L2. */ | |
1468 | while (bc_l > 0 | |
f5336ca5 | 1469 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1470 | bc_l--; |
1471 | ||
876fa593 JK |
1472 | /* Now do full processing of the found relevant range of elements. */ |
1473 | ||
f5336ca5 | 1474 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1475 | { |
f5336ca5 | 1476 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1477 | |
35df4500 TJB |
1478 | /* bp_location array has BL->OWNER always non-NULL. */ |
1479 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1480 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1481 | bl->owner->number); |
ffce0d52 | 1482 | |
e5dd4106 | 1483 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1484 | content. */ |
1485 | ||
f5336ca5 PA |
1486 | if (bl->address >= bp_locations_placed_address_before_address_max |
1487 | && memaddr + len <= (bl->address | |
1488 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1489 | break; |
1490 | ||
35df4500 | 1491 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1492 | continue; |
6c95b8df | 1493 | |
9d497a19 PA |
1494 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1495 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1496 | } | |
c906108c | 1497 | } |
9d497a19 | 1498 | |
f2478a7e | 1499 | /* See breakpoint.h. */ |
b775012e | 1500 | |
f2478a7e | 1501 | bool |
b775012e LM |
1502 | is_breakpoint (const struct breakpoint *bpt) |
1503 | { | |
1504 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1505 | || bpt->type == bp_hardware_breakpoint |
1506 | || bpt->type == bp_dprintf); | |
b775012e LM |
1507 | } |
1508 | ||
60e1c644 PA |
1509 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1510 | ||
f2478a7e | 1511 | static bool |
d77f58be | 1512 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1513 | { |
1514 | return (bpt->type == bp_hardware_watchpoint | |
1515 | || bpt->type == bp_read_watchpoint | |
1516 | || bpt->type == bp_access_watchpoint); | |
1517 | } | |
7270d8f2 | 1518 | |
f2478a7e | 1519 | /* See breakpoint.h. */ |
60e1c644 | 1520 | |
f2478a7e | 1521 | bool |
d77f58be | 1522 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1523 | { |
1524 | return (is_hardware_watchpoint (bpt) | |
1525 | || bpt->type == bp_watchpoint); | |
1526 | } | |
1527 | ||
3a5c3e22 PA |
1528 | /* Returns true if the current thread and its running state are safe |
1529 | to evaluate or update watchpoint B. Watchpoints on local | |
1530 | expressions need to be evaluated in the context of the thread that | |
1531 | was current when the watchpoint was created, and, that thread needs | |
1532 | to be stopped to be able to select the correct frame context. | |
1533 | Watchpoints on global expressions can be evaluated on any thread, | |
1534 | and in any state. It is presently left to the target allowing | |
1535 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1536 | |
1537 | static int | |
3a5c3e22 | 1538 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1539 | { |
c1fc2657 | 1540 | return (b->pspace == current_program_space |
d7e15655 TT |
1541 | && (b->watchpoint_thread == null_ptid |
1542 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1543 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1544 | } |
1545 | ||
d0fb5eae JK |
1546 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1547 | associated bp_watchpoint_scope breakpoint. */ | |
1548 | ||
1549 | static void | |
3a5c3e22 | 1550 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1551 | { |
c1fc2657 | 1552 | if (w->related_breakpoint != w) |
d0fb5eae | 1553 | { |
c1fc2657 SM |
1554 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1555 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1556 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1557 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1558 | w->related_breakpoint = w; | |
d0fb5eae | 1559 | } |
c1fc2657 | 1560 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1561 | } |
1562 | ||
bb9d5f81 PP |
1563 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1564 | watchpoint W. */ | |
1565 | ||
1566 | static struct value * | |
1567 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1568 | { | |
1569 | struct value *bit_val; | |
1570 | ||
1571 | if (val == NULL) | |
1572 | return NULL; | |
1573 | ||
1574 | bit_val = allocate_value (value_type (val)); | |
1575 | ||
1576 | unpack_value_bitfield (bit_val, | |
1577 | w->val_bitpos, | |
1578 | w->val_bitsize, | |
1579 | value_contents_for_printing (val), | |
1580 | value_offset (val), | |
1581 | val); | |
1582 | ||
1583 | return bit_val; | |
1584 | } | |
1585 | ||
c6d81124 PA |
1586 | /* Allocate a dummy location and add it to B, which must be a software |
1587 | watchpoint. This is required because even if a software watchpoint | |
1588 | is not watching any memory, bpstat_stop_status requires a location | |
1589 | to be able to report stops. */ | |
1590 | ||
1591 | static void | |
1592 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1593 | struct program_space *pspace) | |
1594 | { | |
1595 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1596 | ||
1597 | b->loc = allocate_bp_location (b); | |
1598 | b->loc->pspace = pspace; | |
1599 | b->loc->address = -1; | |
1600 | b->loc->length = -1; | |
1601 | } | |
1602 | ||
1603 | /* Returns true if B is a software watchpoint that is not watching any | |
1604 | memory (e.g., "watch $pc"). */ | |
1605 | ||
f2478a7e | 1606 | static bool |
c6d81124 PA |
1607 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1608 | { | |
1609 | return (b->type == bp_watchpoint | |
1610 | && b->loc != NULL | |
1611 | && b->loc->next == NULL | |
1612 | && b->loc->address == -1 | |
1613 | && b->loc->length == -1); | |
1614 | } | |
1615 | ||
567e1b4e JB |
1616 | /* Assuming that B is a watchpoint: |
1617 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1618 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1619 | - Evaluate the condition if there is one, and store the result |
1620 | in b->loc->cond. | |
a5606eee VP |
1621 | - Update the list of values that must be watched in B->loc. |
1622 | ||
4a64f543 MS |
1623 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1624 | nothing. If this is local watchpoint that is out of scope, delete | |
1625 | it. | |
1626 | ||
1627 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1628 | removed + inserted on each stop here. Normal breakpoints must | |
1629 | never be removed because they might be missed by a running thread | |
1630 | when debugging in non-stop mode. On the other hand, hardware | |
1631 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1632 | to each LWP since they are stored in each LWP's hardware debug | |
1633 | registers. Therefore, such LWP must be stopped first in order to | |
1634 | be able to modify its hardware watchpoints. | |
1635 | ||
1636 | Hardware watchpoints must be reset exactly once after being | |
1637 | presented to the user. It cannot be done sooner, because it would | |
1638 | reset the data used to present the watchpoint hit to the user. And | |
1639 | it must not be done later because it could display the same single | |
1640 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1641 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1642 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1643 | not user-visible - its hit is suppressed if the memory content has | |
1644 | not changed. | |
1645 | ||
1646 | The following constraints influence the location where we can reset | |
1647 | hardware watchpoints: | |
1648 | ||
1649 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1650 | called several times when GDB stops. | |
1651 | ||
1652 | [linux] | |
1653 | * Multiple hardware watchpoints can be hit at the same time, | |
1654 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1655 | hit at a time as the reason for stopping, and all the other hits | |
1656 | are presented later, one after the other, each time the user | |
1657 | requests the execution to be resumed. Execution is not resumed | |
1658 | for the threads still having pending hit event stored in | |
1659 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1660 | the inferior on the first stop the thread hit event is kept being | |
1661 | reported from its cached value by linux_nat_stopped_data_address | |
1662 | until the real thread resume happens after the watchpoint gets | |
1663 | presented and thus its LWP_INFO->STATUS gets reset. | |
1664 | ||
1665 | Therefore the hardware watchpoint hit can get safely reset on the | |
1666 | watchpoint removal from inferior. */ | |
a79d3c27 | 1667 | |
b40ce68a | 1668 | static void |
3a5c3e22 | 1669 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1670 | { |
a5606eee | 1671 | int within_current_scope; |
a5606eee | 1672 | struct frame_id saved_frame_id; |
66076460 | 1673 | int frame_saved; |
a5606eee | 1674 | |
f6bc2008 PA |
1675 | /* If this is a local watchpoint, we only want to check if the |
1676 | watchpoint frame is in scope if the current thread is the thread | |
1677 | that was used to create the watchpoint. */ | |
1678 | if (!watchpoint_in_thread_scope (b)) | |
1679 | return; | |
1680 | ||
c1fc2657 | 1681 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1682 | return; |
1683 | ||
66076460 | 1684 | frame_saved = 0; |
a5606eee VP |
1685 | |
1686 | /* Determine if the watchpoint is within scope. */ | |
1687 | if (b->exp_valid_block == NULL) | |
1688 | within_current_scope = 1; | |
1689 | else | |
1690 | { | |
b5db5dfc UW |
1691 | struct frame_info *fi = get_current_frame (); |
1692 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1693 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1694 | ||
c9cf6e20 MG |
1695 | /* If we're at a point where the stack has been destroyed |
1696 | (e.g. in a function epilogue), unwinding may not work | |
1697 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1698 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1699 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1700 | return; |
66076460 DJ |
1701 | |
1702 | /* Save the current frame's ID so we can restore it after | |
1703 | evaluating the watchpoint expression on its own frame. */ | |
1704 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1705 | took a frame parameter, so that we didn't have to change the | |
1706 | selected frame. */ | |
1707 | frame_saved = 1; | |
1708 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1709 | ||
a5606eee VP |
1710 | fi = frame_find_by_id (b->watchpoint_frame); |
1711 | within_current_scope = (fi != NULL); | |
1712 | if (within_current_scope) | |
1713 | select_frame (fi); | |
1714 | } | |
1715 | ||
b5db5dfc UW |
1716 | /* We don't free locations. They are stored in the bp_location array |
1717 | and update_global_location_list will eventually delete them and | |
1718 | remove breakpoints if needed. */ | |
c1fc2657 | 1719 | b->loc = NULL; |
b5db5dfc | 1720 | |
a5606eee VP |
1721 | if (within_current_scope && reparse) |
1722 | { | |
bbc13ae3 | 1723 | const char *s; |
d63d0675 | 1724 | |
4d01a485 | 1725 | b->exp.reset (); |
d63d0675 | 1726 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1727 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1728 | /* If the meaning of expression itself changed, the old value is |
1729 | no longer relevant. We don't want to report a watchpoint hit | |
1730 | to the user when the old value and the new value may actually | |
1731 | be completely different objects. */ | |
fa4727a6 | 1732 | b->val = NULL; |
4c1d86d9 | 1733 | b->val_valid = false; |
60e1c644 PA |
1734 | |
1735 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1736 | expression is stored in the breakpoint object, not in the | |
1737 | locations (re)created below. */ | |
c1fc2657 | 1738 | if (b->cond_string != NULL) |
60e1c644 | 1739 | { |
4d01a485 | 1740 | b->cond_exp.reset (); |
60e1c644 | 1741 | |
c1fc2657 | 1742 | s = b->cond_string; |
1bb9788d | 1743 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1744 | } |
a5606eee | 1745 | } |
a5606eee VP |
1746 | |
1747 | /* If we failed to parse the expression, for example because | |
1748 | it refers to a global variable in a not-yet-loaded shared library, | |
1749 | don't try to insert watchpoint. We don't automatically delete | |
1750 | such watchpoint, though, since failure to parse expression | |
1751 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1752 | if (!target_has_execution) |
2d134ed3 PA |
1753 | { |
1754 | /* Without execution, memory can't change. No use to try and | |
1755 | set watchpoint locations. The watchpoint will be reset when | |
1756 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1757 | if (!can_use_hw_watchpoints) |
1758 | { | |
c1fc2657 SM |
1759 | if (b->ops->works_in_software_mode (b)) |
1760 | b->type = bp_watchpoint; | |
e8369a73 | 1761 | else |
638aa5a1 AB |
1762 | error (_("Can't set read/access watchpoint when " |
1763 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1764 | } |
2d134ed3 PA |
1765 | } |
1766 | else if (within_current_scope && b->exp) | |
a5606eee | 1767 | { |
0cf6dd15 | 1768 | int pc = 0; |
a6535de1 | 1769 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1770 | struct value *v, *result; |
2d134ed3 | 1771 | struct program_space *frame_pspace; |
a5606eee | 1772 | |
4d01a485 | 1773 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1774 | |
a5606eee VP |
1775 | /* Avoid setting b->val if it's already set. The meaning of |
1776 | b->val is 'the last value' user saw, and we should update | |
1777 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1778 | happens, the code that reports it updates b->val directly. |
1779 | We don't keep track of the memory value for masked | |
1780 | watchpoints. */ | |
c1fc2657 | 1781 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1782 | { |
bb9d5f81 | 1783 | if (b->val_bitsize != 0) |
850645cf TT |
1784 | v = extract_bitfield_from_watchpoint_value (b, v); |
1785 | b->val = release_value (v); | |
4c1d86d9 | 1786 | b->val_valid = true; |
fa4727a6 | 1787 | } |
a5606eee | 1788 | |
2d134ed3 PA |
1789 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1790 | ||
a5606eee | 1791 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1792 | gdb_assert (!val_chain.empty ()); |
1793 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1794 | { |
a6535de1 TT |
1795 | v = iter.get (); |
1796 | ||
a5606eee VP |
1797 | /* If it's a memory location, and GDB actually needed |
1798 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1799 | must watch it. If the first value returned is |
1800 | still lazy, that means an error occurred reading it; | |
1801 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1802 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1803 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1804 | { |
1805 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1806 | |
a5606eee VP |
1807 | /* We only watch structs and arrays if user asked |
1808 | for it explicitly, never if they just happen to | |
1809 | appear in the middle of some value chain. */ | |
fa4727a6 | 1810 | if (v == result |
a5606eee VP |
1811 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1812 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1813 | { | |
1814 | CORE_ADDR addr; | |
f486487f | 1815 | enum target_hw_bp_type type; |
a5606eee | 1816 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1817 | int bitpos = 0, bitsize = 0; |
1818 | ||
1819 | if (value_bitsize (v) != 0) | |
1820 | { | |
1821 | /* Extract the bit parameters out from the bitfield | |
1822 | sub-expression. */ | |
1823 | bitpos = value_bitpos (v); | |
1824 | bitsize = value_bitsize (v); | |
1825 | } | |
1826 | else if (v == result && b->val_bitsize != 0) | |
1827 | { | |
1828 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1829 | lvalue whose bit parameters are saved in the fields | |
1830 | VAL_BITPOS and VAL_BITSIZE. */ | |
1831 | bitpos = b->val_bitpos; | |
1832 | bitsize = b->val_bitsize; | |
1833 | } | |
a5606eee | 1834 | |
42ae5230 | 1835 | addr = value_address (v); |
bb9d5f81 PP |
1836 | if (bitsize != 0) |
1837 | { | |
1838 | /* Skip the bytes that don't contain the bitfield. */ | |
1839 | addr += bitpos / 8; | |
1840 | } | |
1841 | ||
a5606eee | 1842 | type = hw_write; |
c1fc2657 | 1843 | if (b->type == bp_read_watchpoint) |
a5606eee | 1844 | type = hw_read; |
c1fc2657 | 1845 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1846 | type = hw_access; |
3a5c3e22 | 1847 | |
c1fc2657 SM |
1848 | loc = allocate_bp_location (b); |
1849 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1850 | ; |
1851 | *tmp = loc; | |
a6d9a66e | 1852 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1853 | |
1854 | loc->pspace = frame_pspace; | |
f17d9474 | 1855 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1856 | |
1857 | if (bitsize != 0) | |
1858 | { | |
1859 | /* Just cover the bytes that make up the bitfield. */ | |
1860 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1861 | } | |
1862 | else | |
1863 | loc->length = TYPE_LENGTH (value_type (v)); | |
1864 | ||
a5606eee VP |
1865 | loc->watchpoint_type = type; |
1866 | } | |
1867 | } | |
9fa40276 TJB |
1868 | } |
1869 | ||
1870 | /* Change the type of breakpoint between hardware assisted or | |
1871 | an ordinary watchpoint depending on the hardware support | |
1872 | and free hardware slots. REPARSE is set when the inferior | |
1873 | is started. */ | |
a9634178 | 1874 | if (reparse) |
9fa40276 | 1875 | { |
e09342b5 | 1876 | int reg_cnt; |
9fa40276 TJB |
1877 | enum bp_loc_type loc_type; |
1878 | struct bp_location *bl; | |
a5606eee | 1879 | |
a9634178 | 1880 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1881 | |
1882 | if (reg_cnt) | |
9fa40276 TJB |
1883 | { |
1884 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1885 | enum bptype type; |
9fa40276 | 1886 | |
a9634178 TJB |
1887 | /* Use an exact watchpoint when there's only one memory region to be |
1888 | watched, and only one debug register is needed to watch it. */ | |
1889 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1890 | ||
9fa40276 | 1891 | /* We need to determine how many resources are already |
e09342b5 TJB |
1892 | used for all other hardware watchpoints plus this one |
1893 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1894 | this watchpoint in as well. */ |
1895 | ||
1896 | /* If this is a software watchpoint, we try to turn it | |
1897 | to a hardware one -- count resources as if B was of | |
1898 | hardware watchpoint type. */ | |
c1fc2657 | 1899 | type = b->type; |
a1398e0c PA |
1900 | if (type == bp_watchpoint) |
1901 | type = bp_hardware_watchpoint; | |
1902 | ||
1903 | /* This watchpoint may or may not have been placed on | |
1904 | the list yet at this point (it won't be in the list | |
1905 | if we're trying to create it for the first time, | |
1906 | through watch_command), so always account for it | |
1907 | manually. */ | |
1908 | ||
1909 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1910 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1911 | |
1912 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1913 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1914 | |
1915 | target_resources_ok | |
1916 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1917 | if (target_resources_ok <= 0) |
a9634178 | 1918 | { |
c1fc2657 | 1919 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1920 | |
1921 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1922 | error (_("Target does not support this type of " |
1923 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1924 | else if (target_resources_ok < 0 && !sw_mode) |
1925 | error (_("There are not enough available hardware " | |
1926 | "resources for this watchpoint.")); | |
a1398e0c PA |
1927 | |
1928 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1929 | b->type = bp_watchpoint; |
a1398e0c PA |
1930 | } |
1931 | else | |
1932 | { | |
1933 | /* If this was a software watchpoint, we've just | |
1934 | found we have enough resources to turn it to a | |
1935 | hardware watchpoint. Otherwise, this is a | |
1936 | nop. */ | |
c1fc2657 | 1937 | b->type = type; |
a9634178 | 1938 | } |
9fa40276 | 1939 | } |
c1fc2657 | 1940 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1941 | { |
1942 | if (!can_use_hw_watchpoints) | |
1943 | error (_("Can't set read/access watchpoint when " | |
1944 | "hardware watchpoints are disabled.")); | |
1945 | else | |
1946 | error (_("Expression cannot be implemented with " | |
1947 | "read/access watchpoint.")); | |
1948 | } | |
9fa40276 | 1949 | else |
c1fc2657 | 1950 | b->type = bp_watchpoint; |
9fa40276 | 1951 | |
c1fc2657 | 1952 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1953 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1954 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1955 | bl->loc_type = loc_type; |
1956 | } | |
1957 | ||
c7437ca6 PA |
1958 | /* If a software watchpoint is not watching any memory, then the |
1959 | above left it without any location set up. But, | |
1960 | bpstat_stop_status requires a location to be able to report | |
1961 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1962 | if (b->type == bp_watchpoint && b->loc == NULL) |
1963 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1964 | } |
1965 | else if (!within_current_scope) | |
7270d8f2 | 1966 | { |
ac74f770 MS |
1967 | printf_filtered (_("\ |
1968 | Watchpoint %d deleted because the program has left the block\n\ | |
1969 | in which its expression is valid.\n"), | |
c1fc2657 | 1970 | b->number); |
d0fb5eae | 1971 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1972 | } |
a5606eee VP |
1973 | |
1974 | /* Restore the selected frame. */ | |
66076460 DJ |
1975 | if (frame_saved) |
1976 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1977 | } |
1978 | ||
a5606eee | 1979 | |
74960c60 | 1980 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1981 | inserted in the inferior. We don't differentiate the type of BL's owner |
1982 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1983 | breakpoint_ops is not defined, because in insert_bp_location, | |
1984 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1985 | static int |
35df4500 | 1986 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1987 | { |
35df4500 | 1988 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1989 | return 0; |
1990 | ||
35df4500 | 1991 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1992 | return 0; |
1993 | ||
35df4500 | 1994 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1995 | return 0; |
1996 | ||
f8eba3c6 TT |
1997 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1998 | return 0; | |
1999 | ||
56710373 PA |
2000 | /* This is set for example, when we're attached to the parent of a |
2001 | vfork, and have detached from the child. The child is running | |
2002 | free, and we expect it to do an exec or exit, at which point the | |
2003 | OS makes the parent schedulable again (and the target reports | |
2004 | that the vfork is done). Until the child is done with the shared | |
2005 | memory region, do not insert breakpoints in the parent, otherwise | |
2006 | the child could still trip on the parent's breakpoints. Since | |
2007 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2008 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2009 | return 0; |
2010 | ||
31e77af2 | 2011 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2012 | location, except if the breakpoint is a single-step breakpoint, |
2013 | and the breakpoint's thread is the thread which is stepping past | |
2014 | a breakpoint. */ | |
31e77af2 PA |
2015 | if ((bl->loc_type == bp_loc_software_breakpoint |
2016 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2017 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2018 | bl->address) |
2019 | /* The single-step breakpoint may be inserted at the location | |
2020 | we're trying to step if the instruction branches to itself. | |
2021 | However, the instruction won't be executed at all and it may | |
2022 | break the semantics of the instruction, for example, the | |
2023 | instruction is a conditional branch or updates some flags. | |
2024 | We can't fix it unless GDB is able to emulate the instruction | |
2025 | or switch to displaced stepping. */ | |
2026 | && !(bl->owner->type == bp_single_step | |
2027 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2028 | { |
2029 | if (debug_infrun) | |
2030 | { | |
2031 | fprintf_unfiltered (gdb_stdlog, | |
2032 | "infrun: skipping breakpoint: " | |
2033 | "stepping past insn at: %s\n", | |
2034 | paddress (bl->gdbarch, bl->address)); | |
2035 | } | |
2036 | return 0; | |
2037 | } | |
31e77af2 | 2038 | |
963f9c80 PA |
2039 | /* Don't insert watchpoints if we're trying to step past the |
2040 | instruction that triggered one. */ | |
2041 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2042 | && stepping_past_nonsteppable_watchpoint ()) | |
2043 | { | |
2044 | if (debug_infrun) | |
2045 | { | |
2046 | fprintf_unfiltered (gdb_stdlog, | |
2047 | "infrun: stepping past non-steppable watchpoint. " | |
2048 | "skipping watchpoint at %s:%d\n", | |
2049 | paddress (bl->gdbarch, bl->address), | |
2050 | bl->length); | |
2051 | } | |
2052 | return 0; | |
2053 | } | |
2054 | ||
74960c60 VP |
2055 | return 1; |
2056 | } | |
2057 | ||
934709f0 PW |
2058 | /* Same as should_be_inserted but does the check assuming |
2059 | that the location is not duplicated. */ | |
2060 | ||
2061 | static int | |
2062 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2063 | { | |
2064 | int result; | |
2065 | const int save_duplicate = bl->duplicate; | |
2066 | ||
2067 | bl->duplicate = 0; | |
2068 | result = should_be_inserted (bl); | |
2069 | bl->duplicate = save_duplicate; | |
2070 | return result; | |
2071 | } | |
2072 | ||
b775012e LM |
2073 | /* Parses a conditional described by an expression COND into an |
2074 | agent expression bytecode suitable for evaluation | |
2075 | by the bytecode interpreter. Return NULL if there was | |
2076 | any error during parsing. */ | |
2077 | ||
833177a4 | 2078 | static agent_expr_up |
b775012e LM |
2079 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2080 | { | |
833177a4 | 2081 | if (cond == NULL) |
b775012e LM |
2082 | return NULL; |
2083 | ||
833177a4 PA |
2084 | agent_expr_up aexpr; |
2085 | ||
b775012e LM |
2086 | /* We don't want to stop processing, so catch any errors |
2087 | that may show up. */ | |
a70b8144 | 2088 | try |
b775012e | 2089 | { |
036e657b | 2090 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2091 | } |
2092 | ||
230d2906 | 2093 | catch (const gdb_exception_error &ex) |
b775012e LM |
2094 | { |
2095 | /* If we got here, it means the condition could not be parsed to a valid | |
2096 | bytecode expression and thus can't be evaluated on the target's side. | |
2097 | It's no use iterating through the conditions. */ | |
b775012e LM |
2098 | } |
2099 | ||
2100 | /* We have a valid agent expression. */ | |
2101 | return aexpr; | |
2102 | } | |
2103 | ||
2104 | /* Based on location BL, create a list of breakpoint conditions to be | |
2105 | passed on to the target. If we have duplicated locations with different | |
2106 | conditions, we will add such conditions to the list. The idea is that the | |
2107 | target will evaluate the list of conditions and will only notify GDB when | |
2108 | one of them is true. */ | |
2109 | ||
2110 | static void | |
2111 | build_target_condition_list (struct bp_location *bl) | |
2112 | { | |
2113 | struct bp_location **locp = NULL, **loc2p; | |
2114 | int null_condition_or_parse_error = 0; | |
2115 | int modified = bl->needs_update; | |
2116 | struct bp_location *loc; | |
2117 | ||
8b4f3082 | 2118 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2119 | bl->target_info.conditions.clear (); |
8b4f3082 | 2120 | |
b775012e LM |
2121 | /* This is only meaningful if the target is |
2122 | evaluating conditions and if the user has | |
2123 | opted for condition evaluation on the target's | |
2124 | side. */ | |
2125 | if (gdb_evaluates_breakpoint_condition_p () | |
2126 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2127 | return; | |
2128 | ||
2129 | /* Do a first pass to check for locations with no assigned | |
2130 | conditions or conditions that fail to parse to a valid agent expression | |
2131 | bytecode. If any of these happen, then it's no use to send conditions | |
2132 | to the target since this location will always trigger and generate a | |
2133 | response back to GDB. */ | |
2134 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2135 | { | |
2136 | loc = (*loc2p); | |
2137 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2138 | { | |
2139 | if (modified) | |
2140 | { | |
b775012e LM |
2141 | /* Re-parse the conditions since something changed. In that |
2142 | case we already freed the condition bytecodes (see | |
2143 | force_breakpoint_reinsertion). We just | |
2144 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2145 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2146 | loc->cond.get ()); | |
b775012e LM |
2147 | } |
2148 | ||
2149 | /* If we have a NULL bytecode expression, it means something | |
2150 | went wrong or we have a null condition expression. */ | |
2151 | if (!loc->cond_bytecode) | |
2152 | { | |
2153 | null_condition_or_parse_error = 1; | |
2154 | break; | |
2155 | } | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | /* If any of these happened, it means we will have to evaluate the conditions | |
2160 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2161 | for all the other duplicate locations, thus we free all of them here. | |
2162 | ||
2163 | This is so we have a finer control over which locations' conditions are | |
2164 | being evaluated by GDB or the remote stub. */ | |
2165 | if (null_condition_or_parse_error) | |
2166 | { | |
2167 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2168 | { | |
2169 | loc = (*loc2p); | |
2170 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2171 | { | |
2172 | /* Only go as far as the first NULL bytecode is | |
2173 | located. */ | |
2174 | if (!loc->cond_bytecode) | |
2175 | return; | |
2176 | ||
833177a4 | 2177 | loc->cond_bytecode.reset (); |
b775012e LM |
2178 | } |
2179 | } | |
2180 | } | |
2181 | ||
2182 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2183 | for this location's address. */ | |
2184 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2185 | { | |
2186 | loc = (*loc2p); | |
2187 | if (loc->cond | |
2188 | && is_breakpoint (loc->owner) | |
2189 | && loc->pspace->num == bl->pspace->num | |
2190 | && loc->owner->enable_state == bp_enabled | |
2191 | && loc->enabled) | |
3cde5c42 PA |
2192 | { |
2193 | /* Add the condition to the vector. This will be used later | |
2194 | to send the conditions to the target. */ | |
2195 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2196 | } | |
b775012e LM |
2197 | } |
2198 | ||
2199 | return; | |
2200 | } | |
2201 | ||
d3ce09f5 SS |
2202 | /* Parses a command described by string CMD into an agent expression |
2203 | bytecode suitable for evaluation by the bytecode interpreter. | |
2204 | Return NULL if there was any error during parsing. */ | |
2205 | ||
833177a4 | 2206 | static agent_expr_up |
d3ce09f5 SS |
2207 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2208 | { | |
bbc13ae3 KS |
2209 | const char *cmdrest; |
2210 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2211 | struct gdbarch *gdbarch = get_current_arch (); |
2212 | ||
833177a4 | 2213 | if (cmd == NULL) |
d3ce09f5 SS |
2214 | return NULL; |
2215 | ||
2216 | cmdrest = cmd; | |
2217 | ||
2218 | if (*cmdrest == ',') | |
2219 | ++cmdrest; | |
f1735a53 | 2220 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2221 | |
2222 | if (*cmdrest++ != '"') | |
2223 | error (_("No format string following the location")); | |
2224 | ||
2225 | format_start = cmdrest; | |
2226 | ||
8e481c3b | 2227 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2228 | |
2229 | format_end = cmdrest; | |
2230 | ||
2231 | if (*cmdrest++ != '"') | |
2232 | error (_("Bad format string, non-terminated '\"'.")); | |
2233 | ||
f1735a53 | 2234 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2235 | |
2236 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2237 | error (_("Invalid argument syntax")); | |
2238 | ||
2239 | if (*cmdrest == ',') | |
2240 | cmdrest++; | |
f1735a53 | 2241 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2242 | |
2243 | /* For each argument, make an expression. */ | |
2244 | ||
8e481c3b | 2245 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2246 | while (*cmdrest != '\0') |
2247 | { | |
bbc13ae3 | 2248 | const char *cmd1; |
d3ce09f5 SS |
2249 | |
2250 | cmd1 = cmdrest; | |
4d01a485 | 2251 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2252 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2253 | cmdrest = cmd1; |
2254 | if (*cmdrest == ',') | |
2255 | ++cmdrest; | |
2256 | } | |
2257 | ||
833177a4 PA |
2258 | agent_expr_up aexpr; |
2259 | ||
d3ce09f5 SS |
2260 | /* We don't want to stop processing, so catch any errors |
2261 | that may show up. */ | |
a70b8144 | 2262 | try |
d3ce09f5 | 2263 | { |
036e657b JB |
2264 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2265 | format_start, format_end - format_start, | |
8e481c3b | 2266 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2267 | } |
230d2906 | 2268 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2269 | { |
2270 | /* If we got here, it means the command could not be parsed to a valid | |
2271 | bytecode expression and thus can't be evaluated on the target's side. | |
2272 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2273 | } |
492d29ea | 2274 | |
d3ce09f5 SS |
2275 | /* We have a valid agent expression, return it. */ |
2276 | return aexpr; | |
2277 | } | |
2278 | ||
2279 | /* Based on location BL, create a list of breakpoint commands to be | |
2280 | passed on to the target. If we have duplicated locations with | |
2281 | different commands, we will add any such to the list. */ | |
2282 | ||
2283 | static void | |
2284 | build_target_command_list (struct bp_location *bl) | |
2285 | { | |
2286 | struct bp_location **locp = NULL, **loc2p; | |
2287 | int null_command_or_parse_error = 0; | |
2288 | int modified = bl->needs_update; | |
2289 | struct bp_location *loc; | |
2290 | ||
3cde5c42 PA |
2291 | /* Clear commands left over from a previous insert. */ |
2292 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2293 | |
41fac0cf | 2294 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2295 | return; |
2296 | ||
41fac0cf PA |
2297 | /* For now, limit to agent-style dprintf breakpoints. */ |
2298 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2299 | return; |
2300 | ||
41fac0cf PA |
2301 | /* For now, if we have any duplicate location that isn't a dprintf, |
2302 | don't install the target-side commands, as that would make the | |
2303 | breakpoint not be reported to the core, and we'd lose | |
2304 | control. */ | |
2305 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2306 | { | |
2307 | loc = (*loc2p); | |
2308 | if (is_breakpoint (loc->owner) | |
2309 | && loc->pspace->num == bl->pspace->num | |
2310 | && loc->owner->type != bp_dprintf) | |
2311 | return; | |
2312 | } | |
2313 | ||
d3ce09f5 SS |
2314 | /* Do a first pass to check for locations with no assigned |
2315 | conditions or conditions that fail to parse to a valid agent expression | |
2316 | bytecode. If any of these happen, then it's no use to send conditions | |
2317 | to the target since this location will always trigger and generate a | |
2318 | response back to GDB. */ | |
2319 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2320 | { | |
2321 | loc = (*loc2p); | |
2322 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2323 | { | |
2324 | if (modified) | |
2325 | { | |
d3ce09f5 SS |
2326 | /* Re-parse the commands since something changed. In that |
2327 | case we already freed the command bytecodes (see | |
2328 | force_breakpoint_reinsertion). We just | |
2329 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2330 | loc->cmd_bytecode |
2331 | = parse_cmd_to_aexpr (bl->address, | |
2332 | loc->owner->extra_string); | |
d3ce09f5 SS |
2333 | } |
2334 | ||
2335 | /* If we have a NULL bytecode expression, it means something | |
2336 | went wrong or we have a null command expression. */ | |
2337 | if (!loc->cmd_bytecode) | |
2338 | { | |
2339 | null_command_or_parse_error = 1; | |
2340 | break; | |
2341 | } | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | /* If anything failed, then we're not doing target-side commands, | |
2346 | and so clean up. */ | |
2347 | if (null_command_or_parse_error) | |
2348 | { | |
2349 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2350 | { | |
2351 | loc = (*loc2p); | |
2352 | if (is_breakpoint (loc->owner) | |
2353 | && loc->pspace->num == bl->pspace->num) | |
2354 | { | |
2355 | /* Only go as far as the first NULL bytecode is | |
2356 | located. */ | |
40fb6c5e | 2357 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2358 | return; |
2359 | ||
833177a4 | 2360 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2361 | } |
2362 | } | |
2363 | } | |
2364 | ||
2365 | /* No NULL commands or failed bytecode generation. Build a command list | |
2366 | for this location's address. */ | |
2367 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2368 | { | |
2369 | loc = (*loc2p); | |
2370 | if (loc->owner->extra_string | |
2371 | && is_breakpoint (loc->owner) | |
2372 | && loc->pspace->num == bl->pspace->num | |
2373 | && loc->owner->enable_state == bp_enabled | |
2374 | && loc->enabled) | |
3cde5c42 PA |
2375 | { |
2376 | /* Add the command to the vector. This will be used later | |
2377 | to send the commands to the target. */ | |
2378 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2379 | } | |
d3ce09f5 SS |
2380 | } |
2381 | ||
2382 | bl->target_info.persist = 0; | |
2383 | /* Maybe flag this location as persistent. */ | |
2384 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2385 | bl->target_info.persist = 1; | |
2386 | } | |
2387 | ||
833b7ab5 YQ |
2388 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2389 | of breakpoint according to ADDR except single-step breakpoint. | |
2390 | Get the kind of single-step breakpoint according to the current | |
2391 | registers state. */ | |
cd6c3b4f YQ |
2392 | |
2393 | static int | |
2394 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2395 | { | |
833b7ab5 YQ |
2396 | if (bl->owner->type == bp_single_step) |
2397 | { | |
2398 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2399 | struct regcache *regcache; | |
2400 | ||
00431a78 | 2401 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2402 | |
2403 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2404 | regcache, addr); | |
2405 | } | |
2406 | else | |
2407 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2408 | } |
2409 | ||
35df4500 TJB |
2410 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2411 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2412 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2413 | Returns 0 for success, 1 if the bp_location type is not supported or |
2414 | -1 for failure. | |
879bfdc2 | 2415 | |
4a64f543 MS |
2416 | NOTE drow/2003-09-09: This routine could be broken down to an |
2417 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2418 | static int |
35df4500 | 2419 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2420 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2421 | int *disabled_breaks, |
dd61ec5c MW |
2422 | int *hw_breakpoint_error, |
2423 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2424 | { |
cc06b668 | 2425 | gdb_exception bp_excpt; |
879bfdc2 | 2426 | |
b775012e | 2427 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2428 | return 0; |
2429 | ||
35c63cd8 JB |
2430 | /* Note we don't initialize bl->target_info, as that wipes out |
2431 | the breakpoint location's shadow_contents if the breakpoint | |
2432 | is still inserted at that location. This in turn breaks | |
2433 | target_read_memory which depends on these buffers when | |
2434 | a memory read is requested at the breakpoint location: | |
2435 | Once the target_info has been wiped, we fail to see that | |
2436 | we have a breakpoint inserted at that address and thus | |
2437 | read the breakpoint instead of returning the data saved in | |
2438 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2439 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2440 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2441 | bl->target_info.length = bl->length; |
8181d85f | 2442 | |
b775012e LM |
2443 | /* When working with target-side conditions, we must pass all the conditions |
2444 | for the same breakpoint address down to the target since GDB will not | |
2445 | insert those locations. With a list of breakpoint conditions, the target | |
2446 | can decide when to stop and notify GDB. */ | |
2447 | ||
2448 | if (is_breakpoint (bl->owner)) | |
2449 | { | |
2450 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2451 | build_target_command_list (bl); |
2452 | /* Reset the modification marker. */ | |
b775012e LM |
2453 | bl->needs_update = 0; |
2454 | } | |
2455 | ||
35df4500 TJB |
2456 | if (bl->loc_type == bp_loc_software_breakpoint |
2457 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2458 | { |
35df4500 | 2459 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2460 | { |
2461 | /* If the explicitly specified breakpoint type | |
2462 | is not hardware breakpoint, check the memory map to see | |
2463 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2464 | |
765dc015 VP |
2465 | Two important cases are: |
2466 | - location type is not hardware breakpoint, memory | |
2467 | is readonly. We change the type of the location to | |
2468 | hardware breakpoint. | |
4a64f543 MS |
2469 | - location type is hardware breakpoint, memory is |
2470 | read-write. This means we've previously made the | |
2471 | location hardware one, but then the memory map changed, | |
2472 | so we undo. | |
765dc015 | 2473 | |
4a64f543 MS |
2474 | When breakpoints are removed, remove_breakpoints will use |
2475 | location types we've just set here, the only possible | |
2476 | problem is that memory map has changed during running | |
2477 | program, but it's not going to work anyway with current | |
2478 | gdb. */ | |
765dc015 | 2479 | struct mem_region *mr |
0d5ed153 | 2480 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2481 | |
2482 | if (mr) | |
2483 | { | |
2484 | if (automatic_hardware_breakpoints) | |
2485 | { | |
765dc015 VP |
2486 | enum bp_loc_type new_type; |
2487 | ||
2488 | if (mr->attrib.mode != MEM_RW) | |
2489 | new_type = bp_loc_hardware_breakpoint; | |
2490 | else | |
2491 | new_type = bp_loc_software_breakpoint; | |
2492 | ||
35df4500 | 2493 | if (new_type != bl->loc_type) |
765dc015 VP |
2494 | { |
2495 | static int said = 0; | |
cc59ec59 | 2496 | |
35df4500 | 2497 | bl->loc_type = new_type; |
765dc015 VP |
2498 | if (!said) |
2499 | { | |
3e43a32a MS |
2500 | fprintf_filtered (gdb_stdout, |
2501 | _("Note: automatically using " | |
2502 | "hardware breakpoints for " | |
2503 | "read-only addresses.\n")); | |
765dc015 VP |
2504 | said = 1; |
2505 | } | |
2506 | } | |
2507 | } | |
35df4500 | 2508 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2509 | && mr->attrib.mode != MEM_RW) |
2510 | { | |
2511 | fprintf_unfiltered (tmp_error_stream, | |
2512 | _("Cannot insert breakpoint %d.\n" | |
2513 | "Cannot set software breakpoint " | |
2514 | "at read-only address %s\n"), | |
2515 | bl->owner->number, | |
2516 | paddress (bl->gdbarch, bl->address)); | |
2517 | return 1; | |
2518 | } | |
765dc015 VP |
2519 | } |
2520 | } | |
2521 | ||
879bfdc2 DJ |
2522 | /* First check to see if we have to handle an overlay. */ |
2523 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2524 | || bl->section == NULL |
2525 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2526 | { |
2527 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2528 | try |
dd61ec5c | 2529 | { |
0000e5cc PA |
2530 | int val; |
2531 | ||
dd61ec5c | 2532 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2533 | if (val) |
688fca4f | 2534 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2535 | } |
94aeb44b | 2536 | catch (gdb_exception &e) |
dd61ec5c | 2537 | { |
94aeb44b | 2538 | bp_excpt = std::move (e); |
dd61ec5c | 2539 | } |
879bfdc2 DJ |
2540 | } |
2541 | else | |
2542 | { | |
4a64f543 | 2543 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2544 | Shall we set a breakpoint at the LMA? */ |
2545 | if (!overlay_events_enabled) | |
2546 | { | |
2547 | /* Yes -- overlay event support is not active, | |
2548 | so we must try to set a breakpoint at the LMA. | |
2549 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2550 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2551 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2552 | bl->owner->number); |
879bfdc2 DJ |
2553 | else |
2554 | { | |
35df4500 TJB |
2555 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2556 | bl->section); | |
879bfdc2 | 2557 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2558 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2559 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2560 | |
2561 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2562 | try |
0000e5cc PA |
2563 | { |
2564 | int val; | |
2565 | ||
579c6ad9 | 2566 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2567 | = breakpoint_kind (bl, &addr); |
2568 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2569 | val = target_insert_breakpoint (bl->gdbarch, |
2570 | &bl->overlay_target_info); | |
2571 | if (val) | |
688fca4f PA |
2572 | bp_excpt |
2573 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2574 | } |
94aeb44b | 2575 | catch (gdb_exception &e) |
0000e5cc | 2576 | { |
94aeb44b | 2577 | bp_excpt = std::move (e); |
0000e5cc PA |
2578 | } |
2579 | ||
688fca4f | 2580 | if (bp_excpt.reason != 0) |
99361f52 | 2581 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2582 | "Overlay breakpoint %d " |
2583 | "failed: in ROM?\n", | |
35df4500 | 2584 | bl->owner->number); |
879bfdc2 DJ |
2585 | } |
2586 | } | |
2587 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2588 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2589 | { |
2590 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2591 | try |
dd61ec5c | 2592 | { |
0000e5cc PA |
2593 | int val; |
2594 | ||
dd61ec5c | 2595 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2596 | if (val) |
688fca4f | 2597 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2598 | } |
94aeb44b | 2599 | catch (gdb_exception &e) |
dd61ec5c | 2600 | { |
94aeb44b | 2601 | bp_excpt = std::move (e); |
dd61ec5c | 2602 | } |
879bfdc2 DJ |
2603 | } |
2604 | else | |
2605 | { | |
2606 | /* No. This breakpoint will not be inserted. | |
2607 | No error, but do not mark the bp as 'inserted'. */ | |
2608 | return 0; | |
2609 | } | |
2610 | } | |
2611 | ||
688fca4f | 2612 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2613 | { |
2614 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2615 | |
2616 | /* In some cases, we might not be able to insert a | |
2617 | breakpoint in a shared library that has already been | |
2618 | removed, but we have not yet processed the shlib unload | |
2619 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2620 | breakpoint insertion themselves can't tell why the |
2621 | breakpoint insertion failed (e.g., the remote target | |
2622 | doesn't define error codes), so we must treat generic | |
2623 | errors as memory errors. */ | |
688fca4f PA |
2624 | if (bp_excpt.reason == RETURN_ERROR |
2625 | && (bp_excpt.error == GENERIC_ERROR | |
2626 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2627 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2628 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2629 | || shared_objfile_contains_address_p (bl->pspace, |
2630 | bl->address))) | |
879bfdc2 | 2631 | { |
4a64f543 | 2632 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2633 | bl->shlib_disabled = 1; |
76727919 | 2634 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2635 | if (!*disabled_breaks) |
2636 | { | |
2637 | fprintf_unfiltered (tmp_error_stream, | |
2638 | "Cannot insert breakpoint %d.\n", | |
2639 | bl->owner->number); | |
2640 | fprintf_unfiltered (tmp_error_stream, | |
2641 | "Temporarily disabling shared " | |
2642 | "library breakpoints:\n"); | |
2643 | } | |
2644 | *disabled_breaks = 1; | |
879bfdc2 | 2645 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2646 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2647 | return 0; |
879bfdc2 DJ |
2648 | } |
2649 | else | |
879bfdc2 | 2650 | { |
35df4500 | 2651 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2652 | { |
0000e5cc | 2653 | *hw_breakpoint_error = 1; |
688fca4f | 2654 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2655 | fprintf_unfiltered (tmp_error_stream, |
2656 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2657 | bl->owner->number, |
2658 | bp_excpt.message ? ":" : ".\n"); | |
2659 | if (bp_excpt.message != NULL) | |
2660 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2661 | bp_excpt.what ()); |
879bfdc2 DJ |
2662 | } |
2663 | else | |
2664 | { | |
688fca4f | 2665 | if (bp_excpt.message == NULL) |
0000e5cc | 2666 | { |
1ccbe998 | 2667 | std::string message |
0000e5cc PA |
2668 | = memory_error_message (TARGET_XFER_E_IO, |
2669 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2670 | |
2671 | fprintf_unfiltered (tmp_error_stream, | |
2672 | "Cannot insert breakpoint %d.\n" | |
2673 | "%s\n", | |
1ccbe998 | 2674 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2675 | } |
2676 | else | |
2677 | { | |
2678 | fprintf_unfiltered (tmp_error_stream, | |
2679 | "Cannot insert breakpoint %d: %s\n", | |
2680 | bl->owner->number, | |
3d6e9d23 | 2681 | bp_excpt.what ()); |
0000e5cc | 2682 | } |
879bfdc2 | 2683 | } |
0000e5cc | 2684 | return 1; |
879bfdc2 DJ |
2685 | |
2686 | } | |
2687 | } | |
2688 | else | |
35df4500 | 2689 | bl->inserted = 1; |
879bfdc2 | 2690 | |
0000e5cc | 2691 | return 0; |
879bfdc2 DJ |
2692 | } |
2693 | ||
35df4500 | 2694 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2695 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2696 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2697 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2698 | { |
0000e5cc PA |
2699 | int val; |
2700 | ||
77b06cd7 TJB |
2701 | gdb_assert (bl->owner->ops != NULL |
2702 | && bl->owner->ops->insert_location != NULL); | |
2703 | ||
2704 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2705 | |
2706 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2707 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2708 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2709 | { |
2710 | struct bp_location *loc, **loc_temp; | |
2711 | ||
2712 | /* But don't try to insert it, if there's already another | |
2713 | hw_access location that would be considered a duplicate | |
2714 | of this one. */ | |
2715 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2716 | if (loc != bl |
85d721b8 | 2717 | && loc->watchpoint_type == hw_access |
35df4500 | 2718 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2719 | { |
35df4500 TJB |
2720 | bl->duplicate = 1; |
2721 | bl->inserted = 1; | |
2722 | bl->target_info = loc->target_info; | |
2723 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2724 | val = 0; |
2725 | break; | |
2726 | } | |
2727 | ||
2728 | if (val == 1) | |
2729 | { | |
77b06cd7 TJB |
2730 | bl->watchpoint_type = hw_access; |
2731 | val = bl->owner->ops->insert_location (bl); | |
2732 | ||
2733 | if (val) | |
2734 | /* Back to the original value. */ | |
2735 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2736 | } |
2737 | } | |
2738 | ||
35df4500 | 2739 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2740 | } |
2741 | ||
35df4500 | 2742 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2743 | { |
0000e5cc PA |
2744 | int val; |
2745 | ||
77b06cd7 TJB |
2746 | gdb_assert (bl->owner->ops != NULL |
2747 | && bl->owner->ops->insert_location != NULL); | |
2748 | ||
2749 | val = bl->owner->ops->insert_location (bl); | |
2750 | if (val) | |
2751 | { | |
2752 | bl->owner->enable_state = bp_disabled; | |
2753 | ||
2754 | if (val == 1) | |
2755 | warning (_("\ | |
2756 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2757 | of catchpoint."), bl->owner->number); | |
2758 | else | |
2759 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2760 | } | |
2761 | ||
2762 | bl->inserted = (val == 0); | |
1640b821 DJ |
2763 | |
2764 | /* We've already printed an error message if there was a problem | |
2765 | inserting this catchpoint, and we've disabled the catchpoint, | |
2766 | so just return success. */ | |
2767 | return 0; | |
879bfdc2 DJ |
2768 | } |
2769 | ||
2770 | return 0; | |
2771 | } | |
2772 | ||
6c95b8df PA |
2773 | /* This function is called when program space PSPACE is about to be |
2774 | deleted. It takes care of updating breakpoints to not reference | |
2775 | PSPACE anymore. */ | |
2776 | ||
2777 | void | |
2778 | breakpoint_program_space_exit (struct program_space *pspace) | |
2779 | { | |
2780 | struct breakpoint *b, *b_temp; | |
876fa593 | 2781 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2782 | |
2783 | /* Remove any breakpoint that was set through this program space. */ | |
2784 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2785 | { | |
2786 | if (b->pspace == pspace) | |
2787 | delete_breakpoint (b); | |
2788 | } | |
2789 | ||
2790 | /* Breakpoints set through other program spaces could have locations | |
2791 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2792 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2793 | { |
2794 | struct bp_location *tmp; | |
2795 | ||
2796 | if (loc->pspace == pspace) | |
2797 | { | |
2bdf28a0 | 2798 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2799 | if (loc->owner->loc == loc) |
2800 | loc->owner->loc = loc->next; | |
2801 | else | |
2802 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2803 | if (tmp->next == loc) | |
2804 | { | |
2805 | tmp->next = loc->next; | |
2806 | break; | |
2807 | } | |
2808 | } | |
2809 | } | |
2810 | ||
2811 | /* Now update the global location list to permanently delete the | |
2812 | removed locations above. */ | |
44702360 | 2813 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2814 | } |
2815 | ||
74960c60 VP |
2816 | /* Make sure all breakpoints are inserted in inferior. |
2817 | Throws exception on any error. | |
2818 | A breakpoint that is already inserted won't be inserted | |
2819 | again, so calling this function twice is safe. */ | |
2820 | void | |
2821 | insert_breakpoints (void) | |
2822 | { | |
2823 | struct breakpoint *bpt; | |
2824 | ||
2825 | ALL_BREAKPOINTS (bpt) | |
2826 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2827 | { |
2828 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2829 | ||
2830 | update_watchpoint (w, 0 /* don't reparse. */); | |
2831 | } | |
74960c60 | 2832 | |
04086b45 PA |
2833 | /* Updating watchpoints creates new locations, so update the global |
2834 | location list. Explicitly tell ugll to insert locations and | |
2835 | ignore breakpoints_always_inserted_mode. */ | |
2836 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2837 | } |
2838 | ||
20388dd6 YQ |
2839 | /* Invoke CALLBACK for each of bp_location. */ |
2840 | ||
2841 | void | |
2842 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2843 | { | |
2844 | struct bp_location *loc, **loc_tmp; | |
2845 | ||
2846 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2847 | { | |
2848 | callback (loc, NULL); | |
2849 | } | |
2850 | } | |
2851 | ||
b775012e LM |
2852 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2853 | target. It is the case with deleting and disabling of breakpoints when using | |
2854 | always-inserted mode. */ | |
2855 | ||
2856 | static void | |
2857 | update_inserted_breakpoint_locations (void) | |
2858 | { | |
2859 | struct bp_location *bl, **blp_tmp; | |
2860 | int error_flag = 0; | |
2861 | int val = 0; | |
2862 | int disabled_breaks = 0; | |
2863 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2864 | int hw_bp_details_reported = 0; |
b775012e | 2865 | |
d7e74731 | 2866 | string_file tmp_error_stream; |
b775012e LM |
2867 | |
2868 | /* Explicitly mark the warning -- this will only be printed if | |
2869 | there was an error. */ | |
d7e74731 | 2870 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2871 | |
5ed8105e | 2872 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2873 | |
2874 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2875 | { | |
2876 | /* We only want to update software breakpoints and hardware | |
2877 | breakpoints. */ | |
2878 | if (!is_breakpoint (bl->owner)) | |
2879 | continue; | |
2880 | ||
2881 | /* We only want to update locations that are already inserted | |
2882 | and need updating. This is to avoid unwanted insertion during | |
2883 | deletion of breakpoints. */ | |
4daf1902 | 2884 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2885 | continue; |
2886 | ||
2887 | switch_to_program_space_and_thread (bl->pspace); | |
2888 | ||
2889 | /* For targets that support global breakpoints, there's no need | |
2890 | to select an inferior to insert breakpoint to. In fact, even | |
2891 | if we aren't attached to any process yet, we should still | |
2892 | insert breakpoints. */ | |
f5656ead | 2893 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2894 | && inferior_ptid == null_ptid) |
b775012e LM |
2895 | continue; |
2896 | ||
d7e74731 | 2897 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2898 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2899 | if (val) |
2900 | error_flag = val; | |
2901 | } | |
2902 | ||
2903 | if (error_flag) | |
2904 | { | |
223ffa71 | 2905 | target_terminal::ours_for_output (); |
b775012e LM |
2906 | error_stream (tmp_error_stream); |
2907 | } | |
b775012e LM |
2908 | } |
2909 | ||
c30eee59 | 2910 | /* Used when starting or continuing the program. */ |
c906108c | 2911 | |
74960c60 VP |
2912 | static void |
2913 | insert_breakpoint_locations (void) | |
c906108c | 2914 | { |
a5606eee | 2915 | struct breakpoint *bpt; |
35df4500 | 2916 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2917 | int error_flag = 0; |
c906108c | 2918 | int val = 0; |
3fbb6ffa | 2919 | int disabled_breaks = 0; |
81d0cc19 | 2920 | int hw_breakpoint_error = 0; |
dd61ec5c | 2921 | int hw_bp_error_explained_already = 0; |
c906108c | 2922 | |
d7e74731 PA |
2923 | string_file tmp_error_stream; |
2924 | ||
81d0cc19 GS |
2925 | /* Explicitly mark the warning -- this will only be printed if |
2926 | there was an error. */ | |
d7e74731 | 2927 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2928 | |
5ed8105e | 2929 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2930 | |
35df4500 | 2931 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2932 | { |
b775012e | 2933 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2934 | continue; |
2935 | ||
4a64f543 MS |
2936 | /* There is no point inserting thread-specific breakpoints if |
2937 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2938 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2939 | if (bl->owner->thread != -1 |
5d5658a1 | 2940 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2941 | continue; |
2942 | ||
35df4500 | 2943 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2944 | |
2945 | /* For targets that support global breakpoints, there's no need | |
2946 | to select an inferior to insert breakpoint to. In fact, even | |
2947 | if we aren't attached to any process yet, we should still | |
2948 | insert breakpoints. */ | |
f5656ead | 2949 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2950 | && inferior_ptid == null_ptid) |
6c95b8df PA |
2951 | continue; |
2952 | ||
d7e74731 | 2953 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2954 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2955 | if (val) |
eacd795a | 2956 | error_flag = val; |
879bfdc2 | 2957 | } |
c906108c | 2958 | |
4a64f543 MS |
2959 | /* If we failed to insert all locations of a watchpoint, remove |
2960 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2961 | ALL_BREAKPOINTS (bpt) |
2962 | { | |
2963 | int some_failed = 0; | |
2964 | struct bp_location *loc; | |
2965 | ||
2966 | if (!is_hardware_watchpoint (bpt)) | |
2967 | continue; | |
2968 | ||
d6b74ac4 | 2969 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2970 | continue; |
74960c60 VP |
2971 | |
2972 | if (bpt->disposition == disp_del_at_next_stop) | |
2973 | continue; | |
a5606eee VP |
2974 | |
2975 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2976 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2977 | { |
2978 | some_failed = 1; | |
2979 | break; | |
2980 | } | |
2981 | if (some_failed) | |
2982 | { | |
2983 | for (loc = bpt->loc; loc; loc = loc->next) | |
2984 | if (loc->inserted) | |
834c0d03 | 2985 | remove_breakpoint (loc); |
a5606eee VP |
2986 | |
2987 | hw_breakpoint_error = 1; | |
d7e74731 PA |
2988 | tmp_error_stream.printf ("Could not insert " |
2989 | "hardware watchpoint %d.\n", | |
2990 | bpt->number); | |
eacd795a | 2991 | error_flag = -1; |
a5606eee VP |
2992 | } |
2993 | } | |
2994 | ||
eacd795a | 2995 | if (error_flag) |
81d0cc19 GS |
2996 | { |
2997 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2998 | message about possibly exhausted resources. */ | |
dd61ec5c | 2999 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3000 | { |
d7e74731 | 3001 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3002 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3003 | } |
223ffa71 | 3004 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3005 | error_stream (tmp_error_stream); |
3006 | } | |
c906108c SS |
3007 | } |
3008 | ||
c30eee59 TJB |
3009 | /* Used when the program stops. |
3010 | Returns zero if successful, or non-zero if there was a problem | |
3011 | removing a breakpoint location. */ | |
3012 | ||
c906108c | 3013 | int |
fba45db2 | 3014 | remove_breakpoints (void) |
c906108c | 3015 | { |
35df4500 | 3016 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3017 | int val = 0; |
c906108c | 3018 | |
35df4500 | 3019 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3020 | { |
1e4d1764 | 3021 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3022 | val |= remove_breakpoint (bl); |
c5aa993b | 3023 | } |
3a1bae8e | 3024 | return val; |
c906108c SS |
3025 | } |
3026 | ||
49fa26b0 PA |
3027 | /* When a thread exits, remove breakpoints that are related to |
3028 | that thread. */ | |
3029 | ||
3030 | static void | |
3031 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3032 | { | |
3033 | struct breakpoint *b, *b_tmp; | |
3034 | ||
3035 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3036 | { | |
5d5658a1 | 3037 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3038 | { |
3039 | b->disposition = disp_del_at_next_stop; | |
3040 | ||
3041 | printf_filtered (_("\ | |
43792cf0 PA |
3042 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3043 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3044 | |
3045 | /* Hide it from the user. */ | |
3046 | b->number = 0; | |
3047 | } | |
3048 | } | |
3049 | } | |
3050 | ||
f3869b1a | 3051 | /* See breakpoint.h. */ |
6c95b8df | 3052 | |
f3869b1a | 3053 | void |
00431a78 | 3054 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3055 | { |
35df4500 | 3056 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3057 | int val; |
6c95b8df | 3058 | |
35df4500 | 3059 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3060 | { |
35df4500 | 3061 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3062 | continue; |
3063 | ||
fc126975 | 3064 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3065 | { |
834c0d03 | 3066 | val = remove_breakpoint (bl); |
6c95b8df | 3067 | if (val != 0) |
f3869b1a | 3068 | return; |
6c95b8df PA |
3069 | } |
3070 | } | |
6c95b8df PA |
3071 | } |
3072 | ||
e58b0e63 PA |
3073 | static int internal_breakpoint_number = -1; |
3074 | ||
84f4c1fe PM |
3075 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3076 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3077 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3078 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3079 | breakpoint_count and that value incremented. Internal breakpoints |
3080 | do not set the internal var bpnum. */ | |
3081 | static void | |
3082 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3083 | { | |
3084 | if (internal) | |
3085 | b->number = internal_breakpoint_number--; | |
3086 | else | |
3087 | { | |
3088 | set_breakpoint_count (breakpoint_count + 1); | |
3089 | b->number = breakpoint_count; | |
3090 | } | |
3091 | } | |
3092 | ||
e62c965a | 3093 | static struct breakpoint * |
a6d9a66e | 3094 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3095 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3096 | const struct breakpoint_ops *ops) |
e62c965a | 3097 | { |
51abb421 | 3098 | symtab_and_line sal; |
e62c965a PP |
3099 | sal.pc = address; |
3100 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3101 | sal.pspace = current_program_space; |
e62c965a | 3102 | |
51abb421 | 3103 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3104 | b->number = internal_breakpoint_number--; |
3105 | b->disposition = disp_donttouch; | |
3106 | ||
3107 | return b; | |
3108 | } | |
3109 | ||
17450429 PP |
3110 | static const char *const longjmp_names[] = |
3111 | { | |
3112 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3113 | }; | |
3114 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3115 | ||
3116 | /* Per-objfile data private to breakpoint.c. */ | |
3117 | struct breakpoint_objfile_data | |
3118 | { | |
3119 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3120 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3121 | |
3122 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3123 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3124 | |
28106bc2 | 3125 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3126 | int longjmp_searched = 0; |
28106bc2 | 3127 | |
45461e0d SM |
3128 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3129 | references. */ | |
3130 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3131 | |
17450429 | 3132 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3133 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3134 | |
3135 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3136 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3137 | |
3138 | /* True if we have looked for exception probes. */ | |
43dce439 | 3139 | int exception_searched = 0; |
28106bc2 | 3140 | |
45461e0d SM |
3141 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3142 | references. */ | |
3143 | std::vector<probe *> exception_probes; | |
17450429 PP |
3144 | }; |
3145 | ||
51d3063a TT |
3146 | static const struct objfile_key<breakpoint_objfile_data> |
3147 | breakpoint_objfile_key; | |
17450429 PP |
3148 | |
3149 | /* Minimal symbol not found sentinel. */ | |
3150 | static struct minimal_symbol msym_not_found; | |
3151 | ||
3152 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3153 | ||
3154 | static int | |
3155 | msym_not_found_p (const struct minimal_symbol *msym) | |
3156 | { | |
3157 | return msym == &msym_not_found; | |
3158 | } | |
3159 | ||
3160 | /* Return per-objfile data needed by breakpoint.c. | |
3161 | Allocate the data if necessary. */ | |
3162 | ||
3163 | static struct breakpoint_objfile_data * | |
3164 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3165 | { | |
3166 | struct breakpoint_objfile_data *bp_objfile_data; | |
3167 | ||
51d3063a | 3168 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3169 | if (bp_objfile_data == NULL) |
51d3063a | 3170 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3171 | return bp_objfile_data; |
3172 | } | |
3173 | ||
e62c965a | 3174 | static void |
af02033e | 3175 | create_overlay_event_breakpoint (void) |
e62c965a | 3176 | { |
af02033e | 3177 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3178 | |
2030c079 | 3179 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3180 | { |
3181 | struct breakpoint *b; | |
17450429 PP |
3182 | struct breakpoint_objfile_data *bp_objfile_data; |
3183 | CORE_ADDR addr; | |
67994074 | 3184 | struct explicit_location explicit_loc; |
69de3c6a | 3185 | |
17450429 PP |
3186 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3187 | ||
3b7344d5 | 3188 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3189 | continue; |
3190 | ||
3b7344d5 | 3191 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3192 | { |
3b7344d5 | 3193 | struct bound_minimal_symbol m; |
17450429 PP |
3194 | |
3195 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3196 | if (m.minsym == NULL) |
17450429 PP |
3197 | { |
3198 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3199 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3200 | continue; |
3201 | } | |
3202 | bp_objfile_data->overlay_msym = m; | |
3203 | } | |
e62c965a | 3204 | |
77e371c0 | 3205 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3206 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3207 | bp_overlay_event, |
3208 | &internal_breakpoint_ops); | |
67994074 KS |
3209 | initialize_explicit_location (&explicit_loc); |
3210 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3211 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3212 | |
69de3c6a PP |
3213 | if (overlay_debugging == ovly_auto) |
3214 | { | |
3215 | b->enable_state = bp_enabled; | |
3216 | overlay_events_enabled = 1; | |
3217 | } | |
3218 | else | |
3219 | { | |
3220 | b->enable_state = bp_disabled; | |
3221 | overlay_events_enabled = 0; | |
3222 | } | |
e62c965a | 3223 | } |
e62c965a PP |
3224 | } |
3225 | ||
0fd8e87f | 3226 | static void |
af02033e | 3227 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3228 | { |
6c95b8df | 3229 | struct program_space *pspace; |
6c95b8df | 3230 | |
5ed8105e | 3231 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3232 | |
6c95b8df | 3233 | ALL_PSPACES (pspace) |
af02033e | 3234 | { |
af02033e PP |
3235 | set_current_program_space (pspace); |
3236 | ||
2030c079 | 3237 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3238 | { |
3239 | int i; | |
3240 | struct gdbarch *gdbarch; | |
3241 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3242 | |
aed57c53 | 3243 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3244 | |
aed57c53 | 3245 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3246 | |
aed57c53 TT |
3247 | if (!bp_objfile_data->longjmp_searched) |
3248 | { | |
3249 | std::vector<probe *> ret | |
3250 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3251 | |
aed57c53 TT |
3252 | if (!ret.empty ()) |
3253 | { | |
3254 | /* We are only interested in checking one element. */ | |
3255 | probe *p = ret[0]; | |
3256 | ||
3257 | if (!p->can_evaluate_arguments ()) | |
3258 | { | |
3259 | /* We cannot use the probe interface here, because it does | |
3260 | not know how to evaluate arguments. */ | |
3261 | ret.clear (); | |
3262 | } | |
3263 | } | |
3264 | bp_objfile_data->longjmp_probes = ret; | |
3265 | bp_objfile_data->longjmp_searched = 1; | |
3266 | } | |
25f9533e | 3267 | |
aed57c53 TT |
3268 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3269 | { | |
3270 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3271 | { | |
3272 | struct breakpoint *b; | |
3273 | ||
3274 | b = create_internal_breakpoint (gdbarch, | |
3275 | p->get_relocated_address (objfile), | |
3276 | bp_longjmp_master, | |
3277 | &internal_breakpoint_ops); | |
3278 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3279 | b->enable_state = bp_disabled; | |
3280 | } | |
28106bc2 | 3281 | |
aed57c53 TT |
3282 | continue; |
3283 | } | |
28106bc2 | 3284 | |
aed57c53 | 3285 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
28106bc2 | 3286 | continue; |
28106bc2 | 3287 | |
aed57c53 TT |
3288 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3289 | { | |
3290 | struct breakpoint *b; | |
3291 | const char *func_name; | |
3292 | CORE_ADDR addr; | |
3293 | struct explicit_location explicit_loc; | |
0fd8e87f | 3294 | |
aed57c53 TT |
3295 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3296 | continue; | |
17450429 | 3297 | |
aed57c53 TT |
3298 | func_name = longjmp_names[i]; |
3299 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3300 | { | |
3301 | struct bound_minimal_symbol m; | |
3302 | ||
3303 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3304 | if (m.minsym == NULL) | |
3305 | { | |
3306 | /* Prevent future lookups in this objfile. */ | |
3307 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3308 | continue; | |
3309 | } | |
3310 | bp_objfile_data->longjmp_msym[i] = m; | |
3311 | } | |
17450429 | 3312 | |
aed57c53 TT |
3313 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3314 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3315 | &internal_breakpoint_ops); | |
3316 | initialize_explicit_location (&explicit_loc); | |
3317 | explicit_loc.function_name = ASTRDUP (func_name); | |
3318 | b->location = new_explicit_location (&explicit_loc); | |
3319 | b->enable_state = bp_disabled; | |
3320 | } | |
3321 | } | |
af02033e | 3322 | } |
0fd8e87f UW |
3323 | } |
3324 | ||
af02033e | 3325 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3326 | static void |
af02033e | 3327 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3328 | { |
3329 | struct program_space *pspace; | |
af02033e | 3330 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3331 | |
5ed8105e | 3332 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3333 | |
3334 | ALL_PSPACES (pspace) | |
17450429 | 3335 | { |
17450429 PP |
3336 | CORE_ADDR addr; |
3337 | ||
3338 | set_current_program_space (pspace); | |
3339 | ||
2030c079 | 3340 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3341 | { |
3342 | struct breakpoint *b; | |
3343 | struct breakpoint_objfile_data *bp_objfile_data; | |
3344 | struct explicit_location explicit_loc; | |
aa7d318d | 3345 | |
aed57c53 | 3346 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3347 | |
aed57c53 TT |
3348 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3349 | continue; | |
17450429 | 3350 | |
aed57c53 TT |
3351 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3352 | { | |
3353 | struct bound_minimal_symbol m; | |
17450429 | 3354 | |
aed57c53 TT |
3355 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3356 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3357 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3358 | { | |
3359 | /* Prevent future lookups in this objfile. */ | |
3360 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3361 | continue; | |
3362 | } | |
3363 | bp_objfile_data->terminate_msym = m; | |
3364 | } | |
aa7d318d | 3365 | |
aed57c53 TT |
3366 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3367 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
3368 | bp_std_terminate_master, | |
3369 | &internal_breakpoint_ops); | |
3370 | initialize_explicit_location (&explicit_loc); | |
3371 | explicit_loc.function_name = ASTRDUP (func_name); | |
3372 | b->location = new_explicit_location (&explicit_loc); | |
3373 | b->enable_state = bp_disabled; | |
3374 | } | |
17450429 | 3375 | } |
aa7d318d TT |
3376 | } |
3377 | ||
186c406b TT |
3378 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3379 | ||
70221824 | 3380 | static void |
186c406b TT |
3381 | create_exception_master_breakpoint (void) |
3382 | { | |
17450429 | 3383 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3384 | |
2030c079 | 3385 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3386 | { |
17450429 PP |
3387 | struct breakpoint *b; |
3388 | struct gdbarch *gdbarch; | |
3389 | struct breakpoint_objfile_data *bp_objfile_data; | |
3390 | CORE_ADDR addr; | |
67994074 | 3391 | struct explicit_location explicit_loc; |
17450429 PP |
3392 | |
3393 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3394 | ||
28106bc2 SDJ |
3395 | /* We prefer the SystemTap probe point if it exists. */ |
3396 | if (!bp_objfile_data->exception_searched) | |
3397 | { | |
45461e0d SM |
3398 | std::vector<probe *> ret |
3399 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3400 | |
45461e0d | 3401 | if (!ret.empty ()) |
25f9533e SDJ |
3402 | { |
3403 | /* We are only interested in checking one element. */ | |
45461e0d | 3404 | probe *p = ret[0]; |
25f9533e | 3405 | |
935676c9 | 3406 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3407 | { |
3408 | /* We cannot use the probe interface here, because it does | |
3409 | not know how to evaluate arguments. */ | |
45461e0d | 3410 | ret.clear (); |
25f9533e SDJ |
3411 | } |
3412 | } | |
3413 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3414 | bp_objfile_data->exception_searched = 1; |
3415 | } | |
3416 | ||
45461e0d | 3417 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3418 | { |
b926417a | 3419 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3420 | |
3421 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3422 | { |
729662a5 | 3423 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3424 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3425 | bp_exception_master, |
3426 | &internal_breakpoint_ops); | |
d28cd78a | 3427 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3428 | b->enable_state = bp_disabled; |
3429 | } | |
3430 | ||
3431 | continue; | |
3432 | } | |
3433 | ||
3434 | /* Otherwise, try the hook function. */ | |
3435 | ||
3b7344d5 | 3436 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3437 | continue; |
3438 | ||
3439 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3440 | |
3b7344d5 | 3441 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3442 | { |
3b7344d5 | 3443 | struct bound_minimal_symbol debug_hook; |
186c406b | 3444 | |
17450429 | 3445 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3446 | if (debug_hook.minsym == NULL) |
17450429 | 3447 | { |
3b7344d5 | 3448 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3449 | continue; |
3450 | } | |
3451 | ||
3452 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3453 | } |
17450429 | 3454 | |
77e371c0 | 3455 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3456 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3457 | current_top_target ()); | |
06edf0c0 PA |
3458 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3459 | &internal_breakpoint_ops); | |
67994074 KS |
3460 | initialize_explicit_location (&explicit_loc); |
3461 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3462 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3463 | b->enable_state = bp_disabled; |
186c406b | 3464 | } |
186c406b TT |
3465 | } |
3466 | ||
9ef9e6a6 KS |
3467 | /* Does B have a location spec? */ |
3468 | ||
3469 | static int | |
3470 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3471 | { | |
d28cd78a | 3472 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3473 | } |
3474 | ||
c906108c | 3475 | void |
fba45db2 | 3476 | update_breakpoints_after_exec (void) |
c906108c | 3477 | { |
35df4500 | 3478 | struct breakpoint *b, *b_tmp; |
876fa593 | 3479 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3480 | |
25b22b0a PA |
3481 | /* We're about to delete breakpoints from GDB's lists. If the |
3482 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3483 | writing the breakpoints' "shadow contents" back into memory. The | |
3484 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3485 | do that. Instead, the target is responsible from marking | |
3486 | breakpoints out as soon as it detects an exec. We don't do that | |
3487 | here instead, because there may be other attempts to delete | |
3488 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3489 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3490 | if (bploc->pspace == current_program_space) |
3491 | gdb_assert (!bploc->inserted); | |
c906108c | 3492 | |
35df4500 | 3493 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3494 | { |
6c95b8df PA |
3495 | if (b->pspace != current_program_space) |
3496 | continue; | |
3497 | ||
4a64f543 | 3498 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3499 | if (b->type == bp_shlib_event) |
3500 | { | |
3501 | delete_breakpoint (b); | |
3502 | continue; | |
3503 | } | |
c906108c | 3504 | |
4a64f543 | 3505 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3506 | if (b->type == bp_jit_event) |
3507 | { | |
3508 | delete_breakpoint (b); | |
3509 | continue; | |
3510 | } | |
3511 | ||
1900040c | 3512 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3513 | as must overlay event and longjmp master breakpoints. */ |
3514 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3515 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3516 | || b->type == bp_exception_master) | |
c4093a6a JM |
3517 | { |
3518 | delete_breakpoint (b); | |
3519 | continue; | |
3520 | } | |
3521 | ||
4a64f543 | 3522 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3523 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3524 | { |
3525 | delete_breakpoint (b); | |
3526 | continue; | |
3527 | } | |
3528 | ||
7c16b83e PA |
3529 | /* Just like single-step breakpoints. */ |
3530 | if (b->type == bp_single_step) | |
3531 | { | |
3532 | delete_breakpoint (b); | |
3533 | continue; | |
3534 | } | |
3535 | ||
611c83ae PA |
3536 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3537 | after an exec. */ | |
186c406b | 3538 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3539 | || b->type == bp_longjmp_call_dummy |
186c406b | 3540 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3541 | { |
3542 | delete_breakpoint (b); | |
3543 | continue; | |
3544 | } | |
3545 | ||
ce78b96d JB |
3546 | if (b->type == bp_catchpoint) |
3547 | { | |
3548 | /* For now, none of the bp_catchpoint breakpoints need to | |
3549 | do anything at this point. In the future, if some of | |
3550 | the catchpoints need to something, we will need to add | |
3551 | a new method, and call this method from here. */ | |
3552 | continue; | |
3553 | } | |
3554 | ||
c5aa993b JM |
3555 | /* bp_finish is a special case. The only way we ought to be able |
3556 | to see one of these when an exec() has happened, is if the user | |
3557 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3558 | carries them to the call-site of the current callee, by setting | |
3559 | a temporary bp there and resuming. But in this case, the finish | |
3560 | will carry them entirely through the vfork & exec. | |
3561 | ||
3562 | We don't want to allow a bp_finish to remain inserted now. But | |
3563 | we can't safely delete it, 'cause finish_command has a handle to | |
3564 | the bp on a bpstat, and will later want to delete it. There's a | |
3565 | chance (and I've seen it happen) that if we delete the bp_finish | |
3566 | here, that its storage will get reused by the time finish_command | |
3567 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3568 | We really must allow finish_command to delete a bp_finish. | |
3569 | ||
e5dd4106 | 3570 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3571 | it's safe to delete something others may have handles to?" |
3572 | problem, what we'll do here is just uninsert the bp_finish, and | |
3573 | let finish_command delete it. | |
3574 | ||
3575 | (We know the bp_finish is "doomed" in the sense that it's | |
3576 | momentary, and will be deleted as soon as finish_command sees | |
3577 | the inferior stopped. So it doesn't matter that the bp's | |
3578 | address is probably bogus in the new a.out, unlike e.g., the | |
3579 | solib breakpoints.) */ | |
c5aa993b | 3580 | |
c5aa993b JM |
3581 | if (b->type == bp_finish) |
3582 | { | |
3583 | continue; | |
3584 | } | |
3585 | ||
3586 | /* Without a symbolic address, we have little hope of the | |
3587 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3588 | a.out. */ |
9ef9e6a6 | 3589 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3590 | { |
3591 | delete_breakpoint (b); | |
3592 | continue; | |
3593 | } | |
c5aa993b | 3594 | } |
c906108c SS |
3595 | } |
3596 | ||
3597 | int | |
d80ee84f | 3598 | detach_breakpoints (ptid_t ptid) |
c906108c | 3599 | { |
35df4500 | 3600 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3601 | int val = 0; |
2989a365 | 3602 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3603 | struct inferior *inf = current_inferior (); |
c5aa993b | 3604 | |
e99b03dc | 3605 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3606 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3607 | |
6c95b8df | 3608 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3609 | inferior_ptid = ptid; |
35df4500 | 3610 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3611 | { |
35df4500 | 3612 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3613 | continue; |
3614 | ||
bd9673a4 PW |
3615 | /* This function must physically remove breakpoints locations |
3616 | from the specified ptid, without modifying the breakpoint | |
3617 | package's state. Locations of type bp_loc_other are only | |
3618 | maintained at GDB side. So, there is no need to remove | |
3619 | these bp_loc_other locations. Moreover, removing these | |
3620 | would modify the breakpoint package's state. */ | |
3621 | if (bl->loc_type == bp_loc_other) | |
3622 | continue; | |
3623 | ||
35df4500 | 3624 | if (bl->inserted) |
b2b6a7da | 3625 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3626 | } |
d03285ec | 3627 | |
3a1bae8e | 3628 | return val; |
c906108c SS |
3629 | } |
3630 | ||
35df4500 | 3631 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3632 | Note that this is used to detach breakpoints from a child fork. |
3633 | When we get here, the child isn't in the inferior list, and neither | |
3634 | do we have objects to represent its address space --- we should | |
35df4500 | 3635 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3636 | |
c906108c | 3637 | static int |
b2b6a7da | 3638 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3639 | { |
3640 | int val; | |
c5aa993b | 3641 | |
35df4500 TJB |
3642 | /* BL is never in moribund_locations by our callers. */ |
3643 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3644 | |
74960c60 VP |
3645 | /* The type of none suggests that owner is actually deleted. |
3646 | This should not ever happen. */ | |
35df4500 | 3647 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3648 | |
35df4500 TJB |
3649 | if (bl->loc_type == bp_loc_software_breakpoint |
3650 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3651 | { |
c02f5703 MS |
3652 | /* "Normal" instruction breakpoint: either the standard |
3653 | trap-instruction bp (bp_breakpoint), or a | |
3654 | bp_hardware_breakpoint. */ | |
3655 | ||
3656 | /* First check to see if we have to handle an overlay. */ | |
3657 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3658 | || bl->section == NULL |
3659 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3660 | { |
3661 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3662 | |
3663 | /* If we're trying to uninsert a memory breakpoint that we | |
3664 | know is set in a dynamic object that is marked | |
3665 | shlib_disabled, then either the dynamic object was | |
3666 | removed with "remove-symbol-file" or with | |
3667 | "nosharedlibrary". In the former case, we don't know | |
3668 | whether another dynamic object might have loaded over the | |
3669 | breakpoint's address -- the user might well let us know | |
3670 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3671 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3672 | list of dynamically loaded objects). If we have the |
3673 | breakpoint's shadow memory, that is, this is a software | |
3674 | breakpoint managed by GDB, check whether the breakpoint | |
3675 | is still inserted in memory, to avoid overwriting wrong | |
3676 | code with stale saved shadow contents. Note that HW | |
3677 | breakpoints don't have shadow memory, as they're | |
3678 | implemented using a mechanism that is not dependent on | |
3679 | being able to modify the target's memory, and as such | |
3680 | they should always be removed. */ | |
3681 | if (bl->shlib_disabled | |
3682 | && bl->target_info.shadow_len != 0 | |
3683 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3684 | val = 0; | |
3685 | else | |
73971819 | 3686 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3687 | } |
c906108c SS |
3688 | else |
3689 | { | |
4a64f543 | 3690 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3691 | Did we set a breakpoint at the LMA? */ |
3692 | if (!overlay_events_enabled) | |
3693 | { | |
3694 | /* Yes -- overlay event support is not active, so we | |
3695 | should have set a breakpoint at the LMA. Remove it. | |
3696 | */ | |
c02f5703 MS |
3697 | /* Ignore any failures: if the LMA is in ROM, we will |
3698 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3699 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3700 | target_remove_hw_breakpoint (bl->gdbarch, | |
3701 | &bl->overlay_target_info); | |
c02f5703 | 3702 | else |
35df4500 | 3703 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3704 | &bl->overlay_target_info, |
3705 | reason); | |
c02f5703 MS |
3706 | } |
3707 | /* Did we set a breakpoint at the VMA? | |
3708 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3709 | if (bl->inserted) |
c906108c | 3710 | { |
c02f5703 MS |
3711 | /* Yes -- remove it. Previously we did not bother to |
3712 | remove the breakpoint if the section had been | |
3713 | unmapped, but let's not rely on that being safe. We | |
3714 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3715 | |
3716 | /* However, we should remove *software* breakpoints only | |
3717 | if the section is still mapped, or else we overwrite | |
3718 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3719 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3720 | || section_is_mapped (bl->section)) | |
73971819 | 3721 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3722 | else |
3723 | val = 0; | |
c906108c | 3724 | } |
c02f5703 MS |
3725 | else |
3726 | { | |
3727 | /* No -- not inserted, so no need to remove. No error. */ | |
3728 | val = 0; | |
3729 | } | |
c906108c | 3730 | } |
879d1e6b | 3731 | |
08351840 PA |
3732 | /* In some cases, we might not be able to remove a breakpoint in |
3733 | a shared library that has already been removed, but we have | |
3734 | not yet processed the shlib unload event. Similarly for an | |
3735 | unloaded add-symbol-file object - the user might not yet have | |
3736 | had the chance to remove-symbol-file it. shlib_disabled will | |
3737 | be set if the library/object has already been removed, but | |
3738 | the breakpoint hasn't been uninserted yet, e.g., after | |
3739 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3740 | always-inserted mode. */ | |
076855f9 | 3741 | if (val |
08351840 PA |
3742 | && (bl->loc_type == bp_loc_software_breakpoint |
3743 | && (bl->shlib_disabled | |
3744 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3745 | || shared_objfile_contains_address_p (bl->pspace, |
3746 | bl->address)))) | |
879d1e6b UW |
3747 | val = 0; |
3748 | ||
c906108c SS |
3749 | if (val) |
3750 | return val; | |
b2b6a7da | 3751 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3752 | } |
35df4500 | 3753 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3754 | { |
77b06cd7 TJB |
3755 | gdb_assert (bl->owner->ops != NULL |
3756 | && bl->owner->ops->remove_location != NULL); | |
3757 | ||
b2b6a7da | 3758 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3759 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3760 | |
c906108c | 3761 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3762 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3763 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3764 | bl->owner->number); |
c906108c | 3765 | } |
35df4500 TJB |
3766 | else if (bl->owner->type == bp_catchpoint |
3767 | && breakpoint_enabled (bl->owner) | |
3768 | && !bl->duplicate) | |
ce78b96d | 3769 | { |
77b06cd7 TJB |
3770 | gdb_assert (bl->owner->ops != NULL |
3771 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3772 | |
73971819 | 3773 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3774 | if (val) |
3775 | return val; | |
77b06cd7 | 3776 | |
b2b6a7da | 3777 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3778 | } |
c906108c SS |
3779 | |
3780 | return 0; | |
3781 | } | |
3782 | ||
6c95b8df | 3783 | static int |
834c0d03 | 3784 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3785 | { |
35df4500 TJB |
3786 | /* BL is never in moribund_locations by our callers. */ |
3787 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3788 | |
6c95b8df PA |
3789 | /* The type of none suggests that owner is actually deleted. |
3790 | This should not ever happen. */ | |
35df4500 | 3791 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3792 | |
5ed8105e | 3793 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3794 | |
35df4500 | 3795 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3796 | |
5ed8105e | 3797 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3798 | } |
3799 | ||
c906108c SS |
3800 | /* Clear the "inserted" flag in all breakpoints. */ |
3801 | ||
25b22b0a | 3802 | void |
fba45db2 | 3803 | mark_breakpoints_out (void) |
c906108c | 3804 | { |
35df4500 | 3805 | struct bp_location *bl, **blp_tmp; |
c906108c | 3806 | |
35df4500 | 3807 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3808 | if (bl->pspace == current_program_space) |
35df4500 | 3809 | bl->inserted = 0; |
c906108c SS |
3810 | } |
3811 | ||
53a5351d JM |
3812 | /* Clear the "inserted" flag in all breakpoints and delete any |
3813 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3814 | |
3815 | Plus other such housekeeping that has to be done for breakpoints | |
3816 | between runs. | |
3817 | ||
53a5351d JM |
3818 | Note: this function gets called at the end of a run (by |
3819 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3820 | init_wait_for_inferior). */ |
c906108c SS |
3821 | |
3822 | ||
3823 | ||
3824 | void | |
fba45db2 | 3825 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3826 | { |
35df4500 | 3827 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3828 | struct program_space *pspace = current_program_space; |
c906108c | 3829 | |
50c71eaf PA |
3830 | /* If breakpoint locations are shared across processes, then there's |
3831 | nothing to do. */ | |
f5656ead | 3832 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3833 | return; |
3834 | ||
1a853c52 | 3835 | mark_breakpoints_out (); |
075f6582 | 3836 | |
35df4500 | 3837 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3838 | { |
6c95b8df PA |
3839 | if (b->loc && b->loc->pspace != pspace) |
3840 | continue; | |
3841 | ||
c5aa993b JM |
3842 | switch (b->type) |
3843 | { | |
3844 | case bp_call_dummy: | |
e2e4d78b | 3845 | case bp_longjmp_call_dummy: |
c906108c | 3846 | |
c5aa993b | 3847 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3848 | cause problems when the inferior is rerun, so we better get |
3849 | rid of it. */ | |
3850 | ||
3851 | case bp_watchpoint_scope: | |
3852 | ||
3853 | /* Also get rid of scope breakpoints. */ | |
3854 | ||
3855 | case bp_shlib_event: | |
3856 | ||
3857 | /* Also remove solib event breakpoints. Their addresses may | |
3858 | have changed since the last time we ran the program. | |
3859 | Actually we may now be debugging against different target; | |
3860 | and so the solib backend that installed this breakpoint may | |
3861 | not be used in by the target. E.g., | |
3862 | ||
3863 | (gdb) file prog-linux | |
3864 | (gdb) run # native linux target | |
3865 | ... | |
3866 | (gdb) kill | |
3867 | (gdb) file prog-win.exe | |
3868 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3869 | */ | |
c906108c | 3870 | |
f59f708a PA |
3871 | case bp_step_resume: |
3872 | ||
3873 | /* Also remove step-resume breakpoints. */ | |
3874 | ||
7c16b83e PA |
3875 | case bp_single_step: |
3876 | ||
3877 | /* Also remove single-step breakpoints. */ | |
3878 | ||
c5aa993b JM |
3879 | delete_breakpoint (b); |
3880 | break; | |
c906108c | 3881 | |
c5aa993b JM |
3882 | case bp_watchpoint: |
3883 | case bp_hardware_watchpoint: | |
3884 | case bp_read_watchpoint: | |
3885 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3886 | { |
3887 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3888 | |
3a5c3e22 PA |
3889 | /* Likewise for watchpoints on local expressions. */ |
3890 | if (w->exp_valid_block != NULL) | |
3891 | delete_breakpoint (b); | |
63000888 | 3892 | else |
3a5c3e22 | 3893 | { |
63000888 PA |
3894 | /* Get rid of existing locations, which are no longer |
3895 | valid. New ones will be created in | |
3896 | update_watchpoint, when the inferior is restarted. | |
3897 | The next update_global_location_list call will | |
3898 | garbage collect them. */ | |
3899 | b->loc = NULL; | |
3900 | ||
3901 | if (context == inf_starting) | |
3902 | { | |
3903 | /* Reset val field to force reread of starting value in | |
3904 | insert_breakpoints. */ | |
850645cf | 3905 | w->val.reset (nullptr); |
4c1d86d9 | 3906 | w->val_valid = false; |
63000888 PA |
3907 | } |
3908 | } | |
3a5c3e22 | 3909 | } |
c5aa993b JM |
3910 | break; |
3911 | default: | |
c5aa993b JM |
3912 | break; |
3913 | } | |
3914 | } | |
1c5cfe86 PA |
3915 | |
3916 | /* Get rid of the moribund locations. */ | |
1123588c | 3917 | for (bp_location *bl : moribund_locations) |
35df4500 | 3918 | decref_bp_location (&bl); |
1123588c | 3919 | moribund_locations.clear (); |
c906108c SS |
3920 | } |
3921 | ||
6c95b8df PA |
3922 | /* These functions concern about actual breakpoints inserted in the |
3923 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3924 | we need to hop over the bkpt --- so we check for address space | |
3925 | match, not program space. */ | |
3926 | ||
c2c6d25f JM |
3927 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3928 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3929 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3930 | permanent breakpoint. | |
3931 | - When continuing from a location with an ordinary breakpoint, we | |
3932 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3933 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3934 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3935 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3936 | |
c2c6d25f | 3937 | enum breakpoint_here |
accd0bcd | 3938 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3939 | { |
35df4500 | 3940 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3941 | int any_breakpoint_here = 0; |
c906108c | 3942 | |
35df4500 | 3943 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3944 | { |
35df4500 TJB |
3945 | if (bl->loc_type != bp_loc_software_breakpoint |
3946 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3947 | continue; |
3948 | ||
f1310107 | 3949 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3950 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3951 | || bl->permanent) |
f1310107 | 3952 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3953 | { |
3954 | if (overlay_debugging | |
35df4500 TJB |
3955 | && section_is_overlay (bl->section) |
3956 | && !section_is_mapped (bl->section)) | |
075f6582 | 3957 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3958 | else if (bl->permanent) |
075f6582 DJ |
3959 | return permanent_breakpoint_here; |
3960 | else | |
3961 | any_breakpoint_here = 1; | |
3962 | } | |
3963 | } | |
c906108c | 3964 | |
f486487f | 3965 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3966 | } |
3967 | ||
d35ae833 PA |
3968 | /* See breakpoint.h. */ |
3969 | ||
3970 | int | |
accd0bcd | 3971 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
3972 | CORE_ADDR addr, ULONGEST len) |
3973 | { | |
3974 | struct bp_location *bl, **blp_tmp; | |
3975 | ||
3976 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3977 | { | |
3978 | if (bl->loc_type != bp_loc_software_breakpoint | |
3979 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
3980 | continue; | |
3981 | ||
3982 | if ((breakpoint_enabled (bl->owner) | |
3983 | || bl->permanent) | |
3984 | && breakpoint_location_address_range_overlap (bl, aspace, | |
3985 | addr, len)) | |
3986 | { | |
3987 | if (overlay_debugging | |
3988 | && section_is_overlay (bl->section) | |
3989 | && !section_is_mapped (bl->section)) | |
3990 | { | |
3991 | /* Unmapped overlay -- can't be a match. */ | |
3992 | continue; | |
3993 | } | |
3994 | ||
3995 | return 1; | |
3996 | } | |
3997 | } | |
3998 | ||
3999 | return 0; | |
4000 | } | |
4001 | ||
1c5cfe86 PA |
4002 | /* Return true if there's a moribund breakpoint at PC. */ |
4003 | ||
4004 | int | |
accd0bcd | 4005 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4006 | { |
1123588c | 4007 | for (bp_location *loc : moribund_locations) |
f1310107 | 4008 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4009 | return 1; |
4010 | ||
4011 | return 0; | |
4012 | } | |
c2c6d25f | 4013 | |
f7ce857f PA |
4014 | /* Returns non-zero iff BL is inserted at PC, in address space |
4015 | ASPACE. */ | |
4016 | ||
4017 | static int | |
4018 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4019 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4020 | { |
4021 | if (bl->inserted | |
4022 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4023 | aspace, pc)) | |
4024 | { | |
4025 | if (overlay_debugging | |
4026 | && section_is_overlay (bl->section) | |
4027 | && !section_is_mapped (bl->section)) | |
4028 | return 0; /* unmapped overlay -- can't be a match */ | |
4029 | else | |
4030 | return 1; | |
4031 | } | |
4032 | return 0; | |
4033 | } | |
4034 | ||
a1fd2fa5 | 4035 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4036 | |
4037 | int | |
accd0bcd | 4038 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4039 | { |
f7ce857f | 4040 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4041 | |
f7ce857f | 4042 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4043 | { |
f7ce857f PA |
4044 | struct bp_location *bl = *blp; |
4045 | ||
35df4500 TJB |
4046 | if (bl->loc_type != bp_loc_software_breakpoint |
4047 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4048 | continue; |
4049 | ||
f7ce857f PA |
4050 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4051 | return 1; | |
c5aa993b | 4052 | } |
c36b740a VP |
4053 | return 0; |
4054 | } | |
4055 | ||
a1fd2fa5 PA |
4056 | /* This function returns non-zero iff there is a software breakpoint |
4057 | inserted at PC. */ | |
c36b740a VP |
4058 | |
4059 | int | |
accd0bcd | 4060 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4061 | CORE_ADDR pc) |
4fa8626c | 4062 | { |
f7ce857f | 4063 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4064 | |
f7ce857f | 4065 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4066 | { |
f7ce857f PA |
4067 | struct bp_location *bl = *blp; |
4068 | ||
35df4500 | 4069 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4070 | continue; |
4071 | ||
f7ce857f PA |
4072 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4073 | return 1; | |
4fa8626c DJ |
4074 | } |
4075 | ||
4076 | return 0; | |
9c02b525 PA |
4077 | } |
4078 | ||
4079 | /* See breakpoint.h. */ | |
4080 | ||
4081 | int | |
accd0bcd | 4082 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4083 | CORE_ADDR pc) |
4084 | { | |
4085 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4086 | |
4087 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4088 | { | |
4089 | struct bp_location *bl = *blp; | |
4090 | ||
4091 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4092 | continue; | |
4093 | ||
4094 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4095 | return 1; | |
4096 | } | |
4097 | ||
4098 | return 0; | |
4fa8626c DJ |
4099 | } |
4100 | ||
9093389c | 4101 | int |
accd0bcd | 4102 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4103 | CORE_ADDR addr, ULONGEST len) |
4104 | { | |
4105 | struct breakpoint *bpt; | |
4106 | ||
4107 | ALL_BREAKPOINTS (bpt) | |
4108 | { | |
4109 | struct bp_location *loc; | |
4110 | ||
4111 | if (bpt->type != bp_hardware_watchpoint | |
4112 | && bpt->type != bp_access_watchpoint) | |
4113 | continue; | |
4114 | ||
4115 | if (!breakpoint_enabled (bpt)) | |
4116 | continue; | |
4117 | ||
4118 | for (loc = bpt->loc; loc; loc = loc->next) | |
4119 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4120 | { | |
4121 | CORE_ADDR l, h; | |
4122 | ||
4123 | /* Check for intersection. */ | |
768adc05 PA |
4124 | l = std::max<CORE_ADDR> (loc->address, addr); |
4125 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4126 | if (l < h) |
4127 | return 1; | |
4128 | } | |
4129 | } | |
4130 | return 0; | |
4131 | } | |
c5aa993b | 4132 | |
f2478a7e | 4133 | /* See breakpoint.h. */ |
c906108c | 4134 | |
f2478a7e SM |
4135 | bool |
4136 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4137 | { |
f2478a7e | 4138 | return (b->type == bp_catchpoint); |
c906108c SS |
4139 | } |
4140 | ||
f431efe5 PA |
4141 | /* Frees any storage that is part of a bpstat. Does not walk the |
4142 | 'next' chain. */ | |
4143 | ||
04afa70c | 4144 | bpstats::~bpstats () |
198757a8 | 4145 | { |
04afa70c TT |
4146 | if (bp_location_at != NULL) |
4147 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4148 | } |
4149 | ||
c906108c SS |
4150 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4151 | Also free any storage that is part of a bpstat. */ | |
4152 | ||
4153 | void | |
fba45db2 | 4154 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4155 | { |
4156 | bpstat p; | |
4157 | bpstat q; | |
4158 | ||
4159 | if (bsp == 0) | |
4160 | return; | |
4161 | p = *bsp; | |
4162 | while (p != NULL) | |
4163 | { | |
4164 | q = p->next; | |
04afa70c | 4165 | delete p; |
c906108c SS |
4166 | p = q; |
4167 | } | |
4168 | *bsp = NULL; | |
4169 | } | |
4170 | ||
04afa70c TT |
4171 | bpstats::bpstats (const bpstats &other) |
4172 | : next (NULL), | |
4173 | bp_location_at (other.bp_location_at), | |
4174 | breakpoint_at (other.breakpoint_at), | |
4175 | commands (other.commands), | |
04afa70c TT |
4176 | print (other.print), |
4177 | stop (other.stop), | |
4178 | print_it (other.print_it) | |
4179 | { | |
850645cf TT |
4180 | if (other.old_val != NULL) |
4181 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4182 | incref_bp_location (bp_location_at); |
04afa70c TT |
4183 | } |
4184 | ||
c906108c SS |
4185 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4186 | is part of the bpstat is copied as well. */ | |
4187 | ||
4188 | bpstat | |
fba45db2 | 4189 | bpstat_copy (bpstat bs) |
c906108c SS |
4190 | { |
4191 | bpstat p = NULL; | |
4192 | bpstat tmp; | |
4193 | bpstat retval = NULL; | |
4194 | ||
4195 | if (bs == NULL) | |
4196 | return bs; | |
4197 | ||
4198 | for (; bs != NULL; bs = bs->next) | |
4199 | { | |
04afa70c | 4200 | tmp = new bpstats (*bs); |
31cc81e9 | 4201 | |
c906108c SS |
4202 | if (p == NULL) |
4203 | /* This is the first thing in the chain. */ | |
4204 | retval = tmp; | |
4205 | else | |
4206 | p->next = tmp; | |
4207 | p = tmp; | |
4208 | } | |
4209 | p->next = NULL; | |
4210 | return retval; | |
4211 | } | |
4212 | ||
4a64f543 | 4213 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4214 | |
4215 | bpstat | |
fba45db2 | 4216 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4217 | { |
c5aa993b JM |
4218 | if (bsp == NULL) |
4219 | return NULL; | |
c906108c | 4220 | |
c5aa993b JM |
4221 | for (; bsp != NULL; bsp = bsp->next) |
4222 | { | |
f431efe5 | 4223 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4224 | return bsp; |
4225 | } | |
c906108c SS |
4226 | return NULL; |
4227 | } | |
4228 | ||
ab04a2af TT |
4229 | /* See breakpoint.h. */ |
4230 | ||
4c462cb0 | 4231 | bool |
427cd150 | 4232 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4233 | { |
ab04a2af TT |
4234 | for (; bsp != NULL; bsp = bsp->next) |
4235 | { | |
427cd150 TT |
4236 | if (bsp->breakpoint_at == NULL) |
4237 | { | |
4238 | /* A moribund location can never explain a signal other than | |
4239 | GDB_SIGNAL_TRAP. */ | |
4240 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4241 | return true; |
427cd150 TT |
4242 | } |
4243 | else | |
47591c29 PA |
4244 | { |
4245 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4246 | sig)) | |
4c462cb0 | 4247 | return true; |
47591c29 | 4248 | } |
ab04a2af TT |
4249 | } |
4250 | ||
4c462cb0 | 4251 | return false; |
ab04a2af TT |
4252 | } |
4253 | ||
4a64f543 MS |
4254 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4255 | stopped at. *BSP upon return is a bpstat which points to the | |
4256 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4257 | good for anything but further calls to bpstat_num). | |
4258 | ||
8671a17b PA |
4259 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4260 | Return -1 if stopped at a breakpoint that has been deleted since | |
4261 | we set it. | |
4262 | Return 1 otherwise. */ | |
c906108c SS |
4263 | |
4264 | int | |
8671a17b | 4265 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4266 | { |
4267 | struct breakpoint *b; | |
4268 | ||
4269 | if ((*bsp) == NULL) | |
4270 | return 0; /* No more breakpoint values */ | |
8671a17b | 4271 | |
4a64f543 MS |
4272 | /* We assume we'll never have several bpstats that correspond to a |
4273 | single breakpoint -- otherwise, this function might return the | |
4274 | same number more than once and this will look ugly. */ | |
f431efe5 | 4275 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4276 | *bsp = (*bsp)->next; |
4277 | if (b == NULL) | |
4278 | return -1; /* breakpoint that's been deleted since */ | |
4279 | ||
4280 | *num = b->number; /* We have its number */ | |
4281 | return 1; | |
c906108c SS |
4282 | } |
4283 | ||
e93ca019 | 4284 | /* See breakpoint.h. */ |
c906108c SS |
4285 | |
4286 | void | |
e93ca019 | 4287 | bpstat_clear_actions (void) |
c906108c | 4288 | { |
e93ca019 JK |
4289 | bpstat bs; |
4290 | ||
00431a78 | 4291 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4292 | return; |
4293 | ||
00431a78 | 4294 | thread_info *tp = inferior_thread (); |
e93ca019 | 4295 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4296 | { |
d1b0a7bf | 4297 | bs->commands = NULL; |
850645cf | 4298 | bs->old_val.reset (nullptr); |
c906108c SS |
4299 | } |
4300 | } | |
4301 | ||
f3b1572e PA |
4302 | /* Called when a command is about to proceed the inferior. */ |
4303 | ||
4304 | static void | |
4305 | breakpoint_about_to_proceed (void) | |
4306 | { | |
d7e15655 | 4307 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4308 | { |
4309 | struct thread_info *tp = inferior_thread (); | |
4310 | ||
4311 | /* Allow inferior function calls in breakpoint commands to not | |
4312 | interrupt the command list. When the call finishes | |
4313 | successfully, the inferior will be standing at the same | |
4314 | breakpoint as if nothing happened. */ | |
16c381f0 | 4315 | if (tp->control.in_infcall) |
f3b1572e PA |
4316 | return; |
4317 | } | |
4318 | ||
4319 | breakpoint_proceeded = 1; | |
4320 | } | |
4321 | ||
abf85f46 JK |
4322 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4323 | or its equivalent. */ | |
4324 | ||
4325 | static int | |
4326 | command_line_is_silent (struct command_line *cmd) | |
4327 | { | |
4f45d445 | 4328 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4329 | } |
4330 | ||
4a64f543 MS |
4331 | /* Execute all the commands associated with all the breakpoints at |
4332 | this location. Any of these commands could cause the process to | |
4333 | proceed beyond this point, etc. We look out for such changes by | |
4334 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4335 | |
347bddb7 PA |
4336 | Returns true if a breakpoint command resumed the inferior. In that |
4337 | case, it is the caller's responsibility to recall it again with the | |
4338 | bpstat of the current thread. */ | |
4339 | ||
4340 | static int | |
4341 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4342 | { |
4343 | bpstat bs; | |
347bddb7 | 4344 | int again = 0; |
c906108c SS |
4345 | |
4346 | /* Avoid endless recursion if a `source' command is contained | |
4347 | in bs->commands. */ | |
4348 | if (executing_breakpoint_commands) | |
347bddb7 | 4349 | return 0; |
c906108c | 4350 | |
81b1e71c TT |
4351 | scoped_restore save_executing |
4352 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4353 | |
1ac32117 | 4354 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4355 | |
4a64f543 | 4356 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4357 | bs = *bsp; |
4358 | ||
4359 | breakpoint_proceeded = 0; | |
4360 | for (; bs != NULL; bs = bs->next) | |
4361 | { | |
d1b0a7bf | 4362 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4363 | |
4364 | /* Take ownership of the BSP's command tree, if it has one. | |
4365 | ||
4366 | The command tree could legitimately contain commands like | |
4367 | 'step' and 'next', which call clear_proceed_status, which | |
4368 | frees stop_bpstat's command tree. To make sure this doesn't | |
4369 | free the tree we're executing out from under us, we need to | |
4370 | take ownership of the tree ourselves. Since a given bpstat's | |
4371 | commands are only executed once, we don't need to copy it; we | |
4372 | can clear the pointer in the bpstat, and make sure we free | |
4373 | the tree when we're done. */ | |
d1b0a7bf | 4374 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4375 | bs->commands = NULL; |
d1b0a7bf TT |
4376 | if (ccmd != NULL) |
4377 | cmd = ccmd.get (); | |
abf85f46 JK |
4378 | if (command_line_is_silent (cmd)) |
4379 | { | |
4380 | /* The action has been already done by bpstat_stop_status. */ | |
4381 | cmd = cmd->next; | |
4382 | } | |
6c50ab1c | 4383 | |
c906108c SS |
4384 | while (cmd != NULL) |
4385 | { | |
4386 | execute_control_command (cmd); | |
4387 | ||
4388 | if (breakpoint_proceeded) | |
4389 | break; | |
4390 | else | |
4391 | cmd = cmd->next; | |
4392 | } | |
6c50ab1c | 4393 | |
c906108c | 4394 | if (breakpoint_proceeded) |
32c1e744 | 4395 | { |
cb814510 | 4396 | if (current_ui->async) |
347bddb7 PA |
4397 | /* If we are in async mode, then the target might be still |
4398 | running, not stopped at any breakpoint, so nothing for | |
4399 | us to do here -- just return to the event loop. */ | |
4400 | ; | |
32c1e744 VP |
4401 | else |
4402 | /* In sync mode, when execute_control_command returns | |
4403 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4404 | Breakpoint commands for that stop were not run, since |
4405 | execute_command does not run breakpoint commands -- | |
4406 | only command_line_handler does, but that one is not | |
4407 | involved in execution of breakpoint commands. So, we | |
4408 | can now execute breakpoint commands. It should be | |
4409 | noted that making execute_command do bpstat actions is | |
4410 | not an option -- in this case we'll have recursive | |
4411 | invocation of bpstat for each breakpoint with a | |
4412 | command, and can easily blow up GDB stack. Instead, we | |
4413 | return true, which will trigger the caller to recall us | |
4414 | with the new stop_bpstat. */ | |
4415 | again = 1; | |
4416 | break; | |
32c1e744 | 4417 | } |
c906108c | 4418 | } |
347bddb7 PA |
4419 | return again; |
4420 | } | |
4421 | ||
00431a78 PA |
4422 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4423 | one, is alive and has execution. Return NULL otherwise. */ | |
4424 | ||
4425 | static thread_info * | |
4426 | get_bpstat_thread () | |
4427 | { | |
4428 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4429 | return NULL; | |
4430 | ||
4431 | thread_info *tp = inferior_thread (); | |
4432 | if (tp->state == THREAD_EXITED || tp->executing) | |
4433 | return NULL; | |
4434 | return tp; | |
4435 | } | |
4436 | ||
347bddb7 PA |
4437 | void |
4438 | bpstat_do_actions (void) | |
4439 | { | |
694c6bf5 | 4440 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4441 | thread_info *tp; |
353d1d73 | 4442 | |
347bddb7 | 4443 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4444 | while ((tp = get_bpstat_thread ()) != NULL) |
4445 | { | |
4446 | /* Since in sync mode, bpstat_do_actions may resume the | |
4447 | inferior, and only return when it is stopped at the next | |
4448 | breakpoint, we keep doing breakpoint actions until it returns | |
4449 | false to indicate the inferior was not resumed. */ | |
4450 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4451 | break; | |
4452 | } | |
353d1d73 | 4453 | |
694c6bf5 | 4454 | cleanup_if_error.release (); |
c906108c SS |
4455 | } |
4456 | ||
fa4727a6 DJ |
4457 | /* Print out the (old or new) value associated with a watchpoint. */ |
4458 | ||
4459 | static void | |
4460 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4461 | { | |
4462 | if (val == NULL) | |
7f6aba03 | 4463 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4464 | else |
79a45b7d TT |
4465 | { |
4466 | struct value_print_options opts; | |
4467 | get_user_print_options (&opts); | |
4468 | value_print (val, stream, &opts); | |
4469 | } | |
fa4727a6 DJ |
4470 | } |
4471 | ||
f303dbd6 PA |
4472 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4473 | debugging multiple threads. */ | |
4474 | ||
4475 | void | |
4476 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4477 | { | |
112e8700 | 4478 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4479 | return; |
4480 | ||
112e8700 | 4481 | uiout->text ("\n"); |
f303dbd6 PA |
4482 | |
4483 | if (show_thread_that_caused_stop ()) | |
4484 | { | |
4485 | const char *name; | |
4486 | struct thread_info *thr = inferior_thread (); | |
4487 | ||
112e8700 | 4488 | uiout->text ("Thread "); |
33eca680 | 4489 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4490 | |
4491 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4492 | if (name != NULL) | |
4493 | { | |
112e8700 | 4494 | uiout->text (" \""); |
33eca680 | 4495 | uiout->field_string ("name", name); |
112e8700 | 4496 | uiout->text ("\""); |
f303dbd6 PA |
4497 | } |
4498 | ||
112e8700 | 4499 | uiout->text (" hit "); |
f303dbd6 PA |
4500 | } |
4501 | } | |
4502 | ||
e514a9d6 | 4503 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4504 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4505 | 'print_it' in the bpstat structure. Under some circumstances we |
4506 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4507 | normal_stop(). */ |
e514a9d6 JM |
4508 | |
4509 | static enum print_stop_action | |
4510 | print_bp_stop_message (bpstat bs) | |
4511 | { | |
4512 | switch (bs->print_it) | |
4513 | { | |
4514 | case print_it_noop: | |
4a64f543 | 4515 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4516 | return PRINT_UNKNOWN; |
4517 | break; | |
4518 | ||
4519 | case print_it_done: | |
4520 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4521 | relevant messages. */ |
e514a9d6 JM |
4522 | return PRINT_SRC_AND_LOC; |
4523 | break; | |
4524 | ||
4525 | case print_it_normal: | |
4f8d1dc6 | 4526 | { |
f431efe5 PA |
4527 | struct breakpoint *b = bs->breakpoint_at; |
4528 | ||
1a6a67de TJB |
4529 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4530 | which has since been deleted. */ | |
4531 | if (b == NULL) | |
4532 | return PRINT_UNKNOWN; | |
4533 | ||
348d480f PA |
4534 | /* Normal case. Call the breakpoint's print_it method. */ |
4535 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4536 | } |
348d480f | 4537 | break; |
3086aeae | 4538 | |
e514a9d6 | 4539 | default: |
8e65ff28 | 4540 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4541 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4542 | break; |
c906108c | 4543 | } |
c906108c SS |
4544 | } |
4545 | ||
edcc5120 TT |
4546 | /* A helper function that prints a shared library stopped event. */ |
4547 | ||
4548 | static void | |
4549 | print_solib_event (int is_catchpoint) | |
4550 | { | |
6fb16ce6 | 4551 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4552 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4553 | |
4554 | if (!is_catchpoint) | |
4555 | { | |
4556 | if (any_added || any_deleted) | |
112e8700 | 4557 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4558 | else |
112e8700 SM |
4559 | current_uiout->text (_("Stopped due to shared library event (no " |
4560 | "libraries added or removed)\n")); | |
edcc5120 TT |
4561 | } |
4562 | ||
112e8700 SM |
4563 | if (current_uiout->is_mi_like_p ()) |
4564 | current_uiout->field_string ("reason", | |
4565 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4566 | |
4567 | if (any_deleted) | |
4568 | { | |
112e8700 | 4569 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4570 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4571 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4572 | { |
6fb16ce6 SM |
4573 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4574 | ||
edcc5120 | 4575 | if (ix > 0) |
112e8700 SM |
4576 | current_uiout->text (" "); |
4577 | current_uiout->field_string ("library", name); | |
4578 | current_uiout->text ("\n"); | |
edcc5120 | 4579 | } |
edcc5120 TT |
4580 | } |
4581 | ||
4582 | if (any_added) | |
4583 | { | |
112e8700 | 4584 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4585 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4586 | bool first = true; |
52941706 | 4587 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4588 | { |
bcb430e4 | 4589 | if (!first) |
112e8700 | 4590 | current_uiout->text (" "); |
bcb430e4 | 4591 | first = false; |
112e8700 SM |
4592 | current_uiout->field_string ("library", iter->so_name); |
4593 | current_uiout->text ("\n"); | |
edcc5120 | 4594 | } |
edcc5120 TT |
4595 | } |
4596 | } | |
4597 | ||
e514a9d6 JM |
4598 | /* Print a message indicating what happened. This is called from |
4599 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4600 | list - a list of the eventpoints that caused this stop. KIND is |
4601 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4602 | routine calls the generic print routine for printing a message |
4603 | about reasons for stopping. This will print (for example) the | |
4604 | "Breakpoint n," part of the output. The return value of this | |
4605 | routine is one of: | |
c906108c | 4606 | |
4a64f543 | 4607 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4608 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4609 | code to print the location. An example is |
c5aa993b JM |
4610 | "Breakpoint 1, " which should be followed by |
4611 | the location. | |
917317f4 | 4612 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4613 | to also print the location part of the message. |
4614 | An example is the catch/throw messages, which | |
4a64f543 | 4615 | don't require a location appended to the end. |
917317f4 | 4616 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4617 | further info to be printed. */ |
c906108c | 4618 | |
917317f4 | 4619 | enum print_stop_action |
36dfb11c | 4620 | bpstat_print (bpstat bs, int kind) |
c906108c | 4621 | { |
f486487f | 4622 | enum print_stop_action val; |
c5aa993b | 4623 | |
c906108c | 4624 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4625 | (Currently all watchpoints go on the bpstat whether hit or not. |
4626 | That probably could (should) be changed, provided care is taken | |
c906108c | 4627 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4628 | for (; bs; bs = bs->next) |
4629 | { | |
4630 | val = print_bp_stop_message (bs); | |
4631 | if (val == PRINT_SRC_ONLY | |
4632 | || val == PRINT_SRC_AND_LOC | |
4633 | || val == PRINT_NOTHING) | |
4634 | return val; | |
4635 | } | |
c906108c | 4636 | |
36dfb11c TT |
4637 | /* If we had hit a shared library event breakpoint, |
4638 | print_bp_stop_message would print out this message. If we hit an | |
4639 | OS-level shared library event, do the same thing. */ | |
4640 | if (kind == TARGET_WAITKIND_LOADED) | |
4641 | { | |
edcc5120 | 4642 | print_solib_event (0); |
36dfb11c TT |
4643 | return PRINT_NOTHING; |
4644 | } | |
4645 | ||
e514a9d6 | 4646 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4647 | with and nothing was printed. */ |
917317f4 | 4648 | return PRINT_UNKNOWN; |
c906108c SS |
4649 | } |
4650 | ||
bf469271 | 4651 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4652 | |
bf469271 PA |
4653 | static bool |
4654 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4655 | { |
278cd55f | 4656 | struct value *mark = value_mark (); |
bf469271 | 4657 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4658 | |
c906108c | 4659 | value_free_to_mark (mark); |
bf469271 | 4660 | return res; |
c906108c SS |
4661 | } |
4662 | ||
5760d0ab | 4663 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4664 | |
04afa70c TT |
4665 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4666 | : next (NULL), | |
4667 | bp_location_at (bl), | |
4668 | breakpoint_at (bl->owner), | |
4669 | commands (NULL), | |
04afa70c TT |
4670 | print (0), |
4671 | stop (0), | |
4672 | print_it (print_it_normal) | |
c906108c | 4673 | { |
f431efe5 | 4674 | incref_bp_location (bl); |
04afa70c TT |
4675 | **bs_link_pointer = this; |
4676 | *bs_link_pointer = &next; | |
4677 | } | |
4678 | ||
4679 | bpstats::bpstats () | |
4680 | : next (NULL), | |
4681 | bp_location_at (NULL), | |
4682 | breakpoint_at (NULL), | |
4683 | commands (NULL), | |
04afa70c TT |
4684 | print (0), |
4685 | stop (0), | |
4686 | print_it (print_it_normal) | |
4687 | { | |
c906108c SS |
4688 | } |
4689 | \f | |
d983da9c DJ |
4690 | /* The target has stopped with waitstatus WS. Check if any hardware |
4691 | watchpoints have triggered, according to the target. */ | |
4692 | ||
4693 | int | |
4694 | watchpoints_triggered (struct target_waitstatus *ws) | |
4695 | { | |
57810aa7 | 4696 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4697 | CORE_ADDR addr; |
4698 | struct breakpoint *b; | |
4699 | ||
4700 | if (!stopped_by_watchpoint) | |
4701 | { | |
4702 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4703 | as not triggered. */ | |
4704 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4705 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4706 | { |
4707 | struct watchpoint *w = (struct watchpoint *) b; | |
4708 | ||
4709 | w->watchpoint_triggered = watch_triggered_no; | |
4710 | } | |
d983da9c DJ |
4711 | |
4712 | return 0; | |
4713 | } | |
4714 | ||
8b88a78e | 4715 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4716 | { |
4717 | /* We were stopped by a watchpoint, but we don't know where. | |
4718 | Mark all watchpoints as unknown. */ | |
4719 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4720 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4721 | { |
4722 | struct watchpoint *w = (struct watchpoint *) b; | |
4723 | ||
4724 | w->watchpoint_triggered = watch_triggered_unknown; | |
4725 | } | |
d983da9c | 4726 | |
3c4797ba | 4727 | return 1; |
d983da9c DJ |
4728 | } |
4729 | ||
4730 | /* The target could report the data address. Mark watchpoints | |
4731 | affected by this data address as triggered, and all others as not | |
4732 | triggered. */ | |
4733 | ||
4734 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4735 | if (is_hardware_watchpoint (b)) |
d983da9c | 4736 | { |
3a5c3e22 | 4737 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4738 | struct bp_location *loc; |
d983da9c | 4739 | |
3a5c3e22 | 4740 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4741 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4742 | { |
3a5c3e22 | 4743 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4744 | { |
3a5c3e22 PA |
4745 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4746 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4747 | |
4748 | if (newaddr == start) | |
4749 | { | |
3a5c3e22 | 4750 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4751 | break; |
4752 | } | |
4753 | } | |
4754 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4755 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4756 | addr, loc->address, |
4757 | loc->length)) | |
4758 | { | |
3a5c3e22 | 4759 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4760 | break; |
4761 | } | |
4762 | } | |
d983da9c DJ |
4763 | } |
4764 | ||
4765 | return 1; | |
4766 | } | |
4767 | ||
bf469271 PA |
4768 | /* Possible return values for watchpoint_check. */ |
4769 | enum wp_check_result | |
4770 | { | |
4771 | /* The watchpoint has been deleted. */ | |
4772 | WP_DELETED = 1, | |
4773 | ||
4774 | /* The value has changed. */ | |
4775 | WP_VALUE_CHANGED = 2, | |
4776 | ||
4777 | /* The value has not changed. */ | |
4778 | WP_VALUE_NOT_CHANGED = 3, | |
4779 | ||
4780 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4781 | WP_IGNORE = 4, | |
4782 | }; | |
c906108c SS |
4783 | |
4784 | #define BP_TEMPFLAG 1 | |
4785 | #define BP_HARDWAREFLAG 2 | |
4786 | ||
4a64f543 | 4787 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4788 | changed. */ |
553e4c11 | 4789 | |
bf469271 PA |
4790 | static wp_check_result |
4791 | watchpoint_check (bpstat bs) | |
c906108c | 4792 | { |
3a5c3e22 | 4793 | struct watchpoint *b; |
c906108c SS |
4794 | struct frame_info *fr; |
4795 | int within_current_scope; | |
4796 | ||
f431efe5 | 4797 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4798 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4799 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4800 | |
f6bc2008 PA |
4801 | /* If this is a local watchpoint, we only want to check if the |
4802 | watchpoint frame is in scope if the current thread is the thread | |
4803 | that was used to create the watchpoint. */ | |
4804 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4805 | return WP_IGNORE; |
f6bc2008 | 4806 | |
c906108c SS |
4807 | if (b->exp_valid_block == NULL) |
4808 | within_current_scope = 1; | |
4809 | else | |
4810 | { | |
edb3359d DJ |
4811 | struct frame_info *frame = get_current_frame (); |
4812 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4813 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4814 | ||
c9cf6e20 | 4815 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4816 | still in the function but the stack frame has already been |
4817 | invalidated. Since we can't rely on the values of local | |
4818 | variables after the stack has been destroyed, we are treating | |
4819 | the watchpoint in that state as `not changed' without further | |
4820 | checking. Don't mark watchpoints as changed if the current | |
4821 | frame is in an epilogue - even if they are in some other | |
4822 | frame, our view of the stack is likely to be wrong and | |
4823 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4824 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4825 | return WP_IGNORE; |
a0f49112 | 4826 | |
101dcfbe | 4827 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4828 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4829 | |
4830 | /* If we've gotten confused in the unwinder, we might have | |
4831 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4832 | if (within_current_scope) |
4833 | { | |
4834 | struct symbol *function; | |
4835 | ||
4836 | function = get_frame_function (fr); | |
4837 | if (function == NULL | |
4838 | || !contained_in (b->exp_valid_block, | |
4839 | SYMBOL_BLOCK_VALUE (function))) | |
4840 | within_current_scope = 0; | |
4841 | } | |
69fbadd5 | 4842 | |
edb3359d | 4843 | if (within_current_scope) |
c906108c SS |
4844 | /* If we end up stopping, the current frame will get selected |
4845 | in normal_stop. So this call to select_frame won't affect | |
4846 | the user. */ | |
0f7d239c | 4847 | select_frame (fr); |
c906108c | 4848 | } |
c5aa993b | 4849 | |
c906108c SS |
4850 | if (within_current_scope) |
4851 | { | |
4a64f543 MS |
4852 | /* We use value_{,free_to_}mark because it could be a *long* |
4853 | time before we return to the command level and call | |
4854 | free_all_values. We can't call free_all_values because we | |
4855 | might be in the middle of evaluating a function call. */ | |
c906108c | 4856 | |
0cf6dd15 | 4857 | int pc = 0; |
9c06b0b4 | 4858 | struct value *mark; |
fa4727a6 DJ |
4859 | struct value *new_val; |
4860 | ||
c1fc2657 | 4861 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4862 | /* Since we don't know the exact trigger address (from |
4863 | stopped_data_address), just tell the user we've triggered | |
4864 | a mask watchpoint. */ | |
4865 | return WP_VALUE_CHANGED; | |
4866 | ||
4867 | mark = value_mark (); | |
4d01a485 | 4868 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4869 | |
bb9d5f81 PP |
4870 | if (b->val_bitsize != 0) |
4871 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4872 | ||
4a64f543 MS |
4873 | /* We use value_equal_contents instead of value_equal because |
4874 | the latter coerces an array to a pointer, thus comparing just | |
4875 | the address of the array instead of its contents. This is | |
4876 | not what we want. */ | |
fa4727a6 | 4877 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4878 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4879 | new_val))) | |
c906108c | 4880 | { |
c906108c | 4881 | bs->old_val = b->val; |
850645cf | 4882 | b->val = release_value (new_val); |
4c1d86d9 | 4883 | b->val_valid = true; |
850645cf TT |
4884 | if (new_val != NULL) |
4885 | value_free_to_mark (mark); | |
c906108c SS |
4886 | return WP_VALUE_CHANGED; |
4887 | } | |
4888 | else | |
4889 | { | |
60e1c644 | 4890 | /* Nothing changed. */ |
c906108c | 4891 | value_free_to_mark (mark); |
c906108c SS |
4892 | return WP_VALUE_NOT_CHANGED; |
4893 | } | |
4894 | } | |
4895 | else | |
4896 | { | |
4897 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4898 | if we temporarily ignored the watchpoint, then when |
4899 | we reenter the block in which it is valid it contains | |
4900 | garbage (in the case of a function, it may have two | |
4901 | garbage values, one before and one after the prologue). | |
4902 | So we can't even detect the first assignment to it and | |
4903 | watch after that (since the garbage may or may not equal | |
4904 | the first value assigned). */ | |
348d480f PA |
4905 | /* We print all the stop information in |
4906 | breakpoint_ops->print_it, but in this case, by the time we | |
4907 | call breakpoint_ops->print_it this bp will be deleted | |
4908 | already. So we have no choice but print the information | |
4909 | here. */ | |
468afe6c | 4910 | |
0e454242 | 4911 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4912 | { |
4913 | struct ui_out *uiout = current_uiout; | |
4914 | ||
112e8700 SM |
4915 | if (uiout->is_mi_like_p ()) |
4916 | uiout->field_string | |
4917 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
4918 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
4919 | "left the block in\n" | |
4920 | "which its expression is valid.\n", | |
4921 | signed_field ("wpnum", b->number)); | |
468afe6c | 4922 | } |
4ce44c66 | 4923 | |
cdac0397 | 4924 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4925 | b->commands = NULL; |
d0fb5eae | 4926 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4927 | |
4928 | return WP_DELETED; | |
4929 | } | |
4930 | } | |
4931 | ||
18a18393 | 4932 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4933 | breakpoint location BL. This function does not check if we should |
4934 | stop, only if BL explains the stop. */ | |
4935 | ||
18a18393 | 4936 | static int |
6c95b8df | 4937 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4938 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4939 | const struct target_waitstatus *ws) |
18a18393 VP |
4940 | { |
4941 | struct breakpoint *b = bl->owner; | |
4942 | ||
348d480f | 4943 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4944 | gdb_assert (b != NULL); |
4945 | ||
bd522513 | 4946 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4947 | } |
4948 | ||
3a5c3e22 PA |
4949 | /* Determine if the watched values have actually changed, and we |
4950 | should stop. If not, set BS->stop to 0. */ | |
4951 | ||
18a18393 VP |
4952 | static void |
4953 | bpstat_check_watchpoint (bpstat bs) | |
4954 | { | |
2bdf28a0 | 4955 | const struct bp_location *bl; |
3a5c3e22 | 4956 | struct watchpoint *b; |
2bdf28a0 JK |
4957 | |
4958 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4959 | bl = bs->bp_location_at; |
2bdf28a0 | 4960 | gdb_assert (bl != NULL); |
3a5c3e22 | 4961 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4962 | gdb_assert (b != NULL); |
18a18393 | 4963 | |
18a18393 | 4964 | { |
18a18393 VP |
4965 | int must_check_value = 0; |
4966 | ||
c1fc2657 | 4967 | if (b->type == bp_watchpoint) |
18a18393 VP |
4968 | /* For a software watchpoint, we must always check the |
4969 | watched value. */ | |
4970 | must_check_value = 1; | |
4971 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4972 | /* We have a hardware watchpoint (read, write, or access) | |
4973 | and the target earlier reported an address watched by | |
4974 | this watchpoint. */ | |
4975 | must_check_value = 1; | |
4976 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 4977 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
4978 | /* We were stopped by a hardware watchpoint, but the target could |
4979 | not report the data address. We must check the watchpoint's | |
4980 | value. Access and read watchpoints are out of luck; without | |
4981 | a data address, we can't figure it out. */ | |
4982 | must_check_value = 1; | |
3a5c3e22 | 4983 | |
18a18393 VP |
4984 | if (must_check_value) |
4985 | { | |
bf469271 PA |
4986 | wp_check_result e; |
4987 | ||
a70b8144 | 4988 | try |
bf469271 PA |
4989 | { |
4990 | e = watchpoint_check (bs); | |
4991 | } | |
230d2906 | 4992 | catch (const gdb_exception &ex) |
bf469271 PA |
4993 | { |
4994 | exception_fprintf (gdb_stderr, ex, | |
4995 | "Error evaluating expression " | |
4996 | "for watchpoint %d\n", | |
4997 | b->number); | |
4998 | ||
4999 | SWITCH_THRU_ALL_UIS () | |
5000 | { | |
5001 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5002 | b->number); | |
5003 | } | |
5004 | watchpoint_del_at_next_stop (b); | |
5005 | e = WP_DELETED; | |
5006 | } | |
bf469271 | 5007 | |
18a18393 VP |
5008 | switch (e) |
5009 | { | |
5010 | case WP_DELETED: | |
5011 | /* We've already printed what needs to be printed. */ | |
5012 | bs->print_it = print_it_done; | |
5013 | /* Stop. */ | |
5014 | break; | |
60e1c644 PA |
5015 | case WP_IGNORE: |
5016 | bs->print_it = print_it_noop; | |
5017 | bs->stop = 0; | |
5018 | break; | |
18a18393 | 5019 | case WP_VALUE_CHANGED: |
c1fc2657 | 5020 | if (b->type == bp_read_watchpoint) |
18a18393 | 5021 | { |
85d721b8 PA |
5022 | /* There are two cases to consider here: |
5023 | ||
4a64f543 | 5024 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5025 | In that case, trust the target, and always report |
5026 | the watchpoint hit to the user. Even though | |
5027 | reads don't cause value changes, the value may | |
5028 | have changed since the last time it was read, and | |
5029 | since we're not trapping writes, we will not see | |
5030 | those, and as such we should ignore our notion of | |
5031 | old value. | |
5032 | ||
4a64f543 | 5033 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5034 | reads and writes. There are two ways this may |
5035 | happen: | |
5036 | ||
4a64f543 | 5037 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5038 | reads only, but can break on accesses (reads or |
5039 | writes), such as e.g., x86. We detect this case | |
5040 | at the time we try to insert read watchpoints. | |
5041 | ||
4a64f543 | 5042 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5043 | watchpoints, but, the user set an access or write |
5044 | watchpoint watching the same memory as this read | |
5045 | watchpoint. | |
5046 | ||
5047 | If we're watching memory writes as well as reads, | |
5048 | ignore watchpoint hits when we find that the | |
5049 | value hasn't changed, as reads don't cause | |
5050 | changes. This still gives false positives when | |
5051 | the program writes the same value to memory as | |
5052 | what there was already in memory (we will confuse | |
5053 | it for a read), but it's much better than | |
5054 | nothing. */ | |
5055 | ||
5056 | int other_write_watchpoint = 0; | |
5057 | ||
5058 | if (bl->watchpoint_type == hw_read) | |
5059 | { | |
5060 | struct breakpoint *other_b; | |
5061 | ||
5062 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5063 | if (other_b->type == bp_hardware_watchpoint |
5064 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5065 | { |
3a5c3e22 PA |
5066 | struct watchpoint *other_w = |
5067 | (struct watchpoint *) other_b; | |
5068 | ||
5069 | if (other_w->watchpoint_triggered | |
5070 | == watch_triggered_yes) | |
5071 | { | |
5072 | other_write_watchpoint = 1; | |
5073 | break; | |
5074 | } | |
85d721b8 PA |
5075 | } |
5076 | } | |
5077 | ||
5078 | if (other_write_watchpoint | |
5079 | || bl->watchpoint_type == hw_access) | |
5080 | { | |
5081 | /* We're watching the same memory for writes, | |
5082 | and the value changed since the last time we | |
5083 | updated it, so this trap must be for a write. | |
5084 | Ignore it. */ | |
5085 | bs->print_it = print_it_noop; | |
5086 | bs->stop = 0; | |
5087 | } | |
18a18393 VP |
5088 | } |
5089 | break; | |
5090 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5091 | if (b->type == bp_hardware_watchpoint |
5092 | || b->type == bp_watchpoint) | |
18a18393 VP |
5093 | { |
5094 | /* Don't stop: write watchpoints shouldn't fire if | |
5095 | the value hasn't changed. */ | |
5096 | bs->print_it = print_it_noop; | |
5097 | bs->stop = 0; | |
5098 | } | |
5099 | /* Stop. */ | |
5100 | break; | |
5101 | default: | |
5102 | /* Can't happen. */ | |
18a18393 VP |
5103 | break; |
5104 | } | |
5105 | } | |
5106 | else /* must_check_value == 0 */ | |
5107 | { | |
5108 | /* This is a case where some watchpoint(s) triggered, but | |
5109 | not at the address of this watchpoint, or else no | |
5110 | watchpoint triggered after all. So don't print | |
5111 | anything for this watchpoint. */ | |
5112 | bs->print_it = print_it_noop; | |
5113 | bs->stop = 0; | |
5114 | } | |
5115 | } | |
5116 | } | |
5117 | ||
7d4df6a4 DE |
5118 | /* For breakpoints that are currently marked as telling gdb to stop, |
5119 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5120 | of breakpoint referred to by BS. If we should not stop for this |
5121 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5122 | |
18a18393 | 5123 | static void |
00431a78 | 5124 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5125 | { |
2bdf28a0 JK |
5126 | const struct bp_location *bl; |
5127 | struct breakpoint *b; | |
bf469271 PA |
5128 | /* Assume stop. */ |
5129 | bool condition_result = true; | |
7d4df6a4 DE |
5130 | struct expression *cond; |
5131 | ||
5132 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5133 | |
5134 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5135 | bl = bs->bp_location_at; |
2bdf28a0 | 5136 | gdb_assert (bl != NULL); |
f431efe5 | 5137 | b = bs->breakpoint_at; |
2bdf28a0 | 5138 | gdb_assert (b != NULL); |
18a18393 | 5139 | |
b775012e LM |
5140 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5141 | need to do so again since GDB does not know if we stopped due to a | |
5142 | breakpoint or a single step breakpoint. */ | |
5143 | ||
18a18393 | 5144 | if (frame_id_p (b->frame_id) |
edb3359d | 5145 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5146 | { |
7d4df6a4 DE |
5147 | bs->stop = 0; |
5148 | return; | |
5149 | } | |
60e1c644 | 5150 | |
12ab52e9 PA |
5151 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5152 | evaluating the condition if this isn't the specified | |
5153 | thread/task. */ | |
00431a78 PA |
5154 | if ((b->thread != -1 && b->thread != thread->global_num) |
5155 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5156 | { |
5157 | bs->stop = 0; | |
5158 | return; | |
5159 | } | |
5160 | ||
6dddc817 DE |
5161 | /* Evaluate extension language breakpoints that have a "stop" method |
5162 | implemented. */ | |
5163 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5164 | |
7d4df6a4 DE |
5165 | if (is_watchpoint (b)) |
5166 | { | |
5167 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5168 | |
4d01a485 | 5169 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5170 | } |
5171 | else | |
4d01a485 | 5172 | cond = bl->cond.get (); |
60e1c644 | 5173 | |
7d4df6a4 DE |
5174 | if (cond && b->disposition != disp_del_at_next_stop) |
5175 | { | |
5176 | int within_current_scope = 1; | |
5177 | struct watchpoint * w; | |
60e1c644 | 5178 | |
7d4df6a4 DE |
5179 | /* We use value_mark and value_free_to_mark because it could |
5180 | be a long time before we return to the command level and | |
5181 | call free_all_values. We can't call free_all_values | |
5182 | because we might be in the middle of evaluating a | |
5183 | function call. */ | |
5184 | struct value *mark = value_mark (); | |
5185 | ||
5186 | if (is_watchpoint (b)) | |
5187 | w = (struct watchpoint *) b; | |
5188 | else | |
5189 | w = NULL; | |
5190 | ||
5191 | /* Need to select the frame, with all that implies so that | |
5192 | the conditions will have the right context. Because we | |
5193 | use the frame, we will not see an inlined function's | |
5194 | variables when we arrive at a breakpoint at the start | |
5195 | of the inlined function; the current frame will be the | |
5196 | call site. */ | |
5197 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5198 | select_frame (get_current_frame ()); | |
5199 | else | |
18a18393 | 5200 | { |
7d4df6a4 DE |
5201 | struct frame_info *frame; |
5202 | ||
5203 | /* For local watchpoint expressions, which particular | |
5204 | instance of a local is being watched matters, so we | |
5205 | keep track of the frame to evaluate the expression | |
5206 | in. To evaluate the condition however, it doesn't | |
5207 | really matter which instantiation of the function | |
5208 | where the condition makes sense triggers the | |
5209 | watchpoint. This allows an expression like "watch | |
5210 | global if q > 10" set in `func', catch writes to | |
5211 | global on all threads that call `func', or catch | |
5212 | writes on all recursive calls of `func' by a single | |
5213 | thread. We simply always evaluate the condition in | |
5214 | the innermost frame that's executing where it makes | |
5215 | sense to evaluate the condition. It seems | |
5216 | intuitive. */ | |
5217 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5218 | if (frame != NULL) | |
5219 | select_frame (frame); | |
5220 | else | |
5221 | within_current_scope = 0; | |
18a18393 | 5222 | } |
7d4df6a4 | 5223 | if (within_current_scope) |
bf469271 | 5224 | { |
a70b8144 | 5225 | try |
bf469271 PA |
5226 | { |
5227 | condition_result = breakpoint_cond_eval (cond); | |
5228 | } | |
230d2906 | 5229 | catch (const gdb_exception &ex) |
bf469271 PA |
5230 | { |
5231 | exception_fprintf (gdb_stderr, ex, | |
5232 | "Error in testing breakpoint condition:\n"); | |
5233 | } | |
bf469271 | 5234 | } |
7d4df6a4 | 5235 | else |
18a18393 | 5236 | { |
7d4df6a4 DE |
5237 | warning (_("Watchpoint condition cannot be tested " |
5238 | "in the current scope")); | |
5239 | /* If we failed to set the right context for this | |
5240 | watchpoint, unconditionally report it. */ | |
18a18393 | 5241 | } |
7d4df6a4 DE |
5242 | /* FIXME-someday, should give breakpoint #. */ |
5243 | value_free_to_mark (mark); | |
18a18393 | 5244 | } |
7d4df6a4 | 5245 | |
bf469271 | 5246 | if (cond && !condition_result) |
7d4df6a4 DE |
5247 | { |
5248 | bs->stop = 0; | |
5249 | } | |
7d4df6a4 DE |
5250 | else if (b->ignore_count > 0) |
5251 | { | |
5252 | b->ignore_count--; | |
5253 | bs->stop = 0; | |
5254 | /* Increase the hit count even though we don't stop. */ | |
5255 | ++(b->hit_count); | |
76727919 | 5256 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5257 | } |
18a18393 VP |
5258 | } |
5259 | ||
1cf4d951 PA |
5260 | /* Returns true if we need to track moribund locations of LOC's type |
5261 | on the current target. */ | |
5262 | ||
5263 | static int | |
5264 | need_moribund_for_location_type (struct bp_location *loc) | |
5265 | { | |
5266 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5267 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5268 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5269 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5270 | } | |
5271 | ||
ddfe970e | 5272 | /* See breakpoint.h. */ |
c906108c SS |
5273 | |
5274 | bpstat | |
ddfe970e | 5275 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5276 | const struct target_waitstatus *ws) |
c906108c | 5277 | { |
ddfe970e | 5278 | struct breakpoint *b; |
5760d0ab | 5279 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5280 | |
429374b8 JK |
5281 | ALL_BREAKPOINTS (b) |
5282 | { | |
1a853c52 | 5283 | if (!breakpoint_enabled (b)) |
429374b8 | 5284 | continue; |
a5606eee | 5285 | |
ddfe970e | 5286 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5287 | { |
4a64f543 MS |
5288 | /* For hardware watchpoints, we look only at the first |
5289 | location. The watchpoint_check function will work on the | |
5290 | entire expression, not the individual locations. For | |
5291 | read watchpoints, the watchpoints_triggered function has | |
5292 | checked all locations already. */ | |
429374b8 JK |
5293 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5294 | break; | |
18a18393 | 5295 | |
f6592439 | 5296 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5297 | continue; |
c5aa993b | 5298 | |
09ac7c10 | 5299 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5300 | continue; |
c5aa993b | 5301 | |
4a64f543 MS |
5302 | /* Come here if it's a watchpoint, or if the break address |
5303 | matches. */ | |
c5aa993b | 5304 | |
ddfe970e KS |
5305 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5306 | explain stop. */ | |
c5aa993b | 5307 | |
f431efe5 PA |
5308 | /* Assume we stop. Should we find a watchpoint that is not |
5309 | actually triggered, or if the condition of the breakpoint | |
5310 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5311 | bs->stop = 1; |
5312 | bs->print = 1; | |
d983da9c | 5313 | |
f431efe5 PA |
5314 | /* If this is a scope breakpoint, mark the associated |
5315 | watchpoint as triggered so that we will handle the | |
5316 | out-of-scope event. We'll get to the watchpoint next | |
5317 | iteration. */ | |
d0fb5eae | 5318 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5319 | { |
5320 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5321 | ||
5322 | w->watchpoint_triggered = watch_triggered_yes; | |
5323 | } | |
f431efe5 PA |
5324 | } |
5325 | } | |
5326 | ||
7c16b83e | 5327 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5328 | if (!target_supports_stopped_by_sw_breakpoint () |
5329 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5330 | { |
1123588c | 5331 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5332 | { |
1cf4d951 PA |
5333 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5334 | && need_moribund_for_location_type (loc)) | |
5335 | { | |
ddfe970e | 5336 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5337 | /* For hits of moribund locations, we should just proceed. */ |
5338 | bs->stop = 0; | |
5339 | bs->print = 0; | |
5340 | bs->print_it = print_it_noop; | |
5341 | } | |
f431efe5 PA |
5342 | } |
5343 | } | |
5344 | ||
ddfe970e KS |
5345 | return bs_head; |
5346 | } | |
5347 | ||
5348 | /* See breakpoint.h. */ | |
5349 | ||
5350 | bpstat | |
5351 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5352 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5353 | const struct target_waitstatus *ws, |
5354 | bpstat stop_chain) | |
5355 | { | |
5356 | struct breakpoint *b = NULL; | |
5357 | /* First item of allocated bpstat's. */ | |
5358 | bpstat bs_head = stop_chain; | |
5359 | bpstat bs; | |
5360 | int need_remove_insert; | |
5361 | int removed_any; | |
5362 | ||
5363 | /* First, build the bpstat chain with locations that explain a | |
5364 | target stop, while being careful to not set the target running, | |
5365 | as that may invalidate locations (in particular watchpoint | |
5366 | locations are recreated). Resuming will happen here with | |
5367 | breakpoint conditions or watchpoint expressions that include | |
5368 | inferior function calls. */ | |
5369 | if (bs_head == NULL) | |
5370 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5371 | ||
edcc5120 TT |
5372 | /* A bit of special processing for shlib breakpoints. We need to |
5373 | process solib loading here, so that the lists of loaded and | |
5374 | unloaded libraries are correct before we handle "catch load" and | |
5375 | "catch unload". */ | |
5376 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5377 | { | |
5d268276 | 5378 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5379 | { |
5380 | handle_solib_event (); | |
5381 | break; | |
5382 | } | |
5383 | } | |
5384 | ||
f431efe5 PA |
5385 | /* Now go through the locations that caused the target to stop, and |
5386 | check whether we're interested in reporting this stop to higher | |
5387 | layers, or whether we should resume the target transparently. */ | |
5388 | ||
5389 | removed_any = 0; | |
5390 | ||
5760d0ab | 5391 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5392 | { |
5393 | if (!bs->stop) | |
5394 | continue; | |
5395 | ||
f431efe5 | 5396 | b = bs->breakpoint_at; |
348d480f PA |
5397 | b->ops->check_status (bs); |
5398 | if (bs->stop) | |
28010a5d | 5399 | { |
00431a78 | 5400 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5401 | |
429374b8 JK |
5402 | if (bs->stop) |
5403 | { | |
5404 | ++(b->hit_count); | |
76727919 | 5405 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5406 | |
4a64f543 | 5407 | /* We will stop here. */ |
429374b8 JK |
5408 | if (b->disposition == disp_disable) |
5409 | { | |
816338b5 | 5410 | --(b->enable_count); |
1a853c52 | 5411 | if (b->enable_count <= 0) |
429374b8 | 5412 | b->enable_state = bp_disabled; |
f431efe5 | 5413 | removed_any = 1; |
429374b8 JK |
5414 | } |
5415 | if (b->silent) | |
5416 | bs->print = 0; | |
5417 | bs->commands = b->commands; | |
abf85f46 | 5418 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5419 | ? bs->commands.get () : NULL)) |
abf85f46 | 5420 | bs->print = 0; |
9d6e6e84 HZ |
5421 | |
5422 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5423 | } |
5424 | ||
348d480f | 5425 | } |
a9b3a50f PA |
5426 | |
5427 | /* Print nothing for this entry if we don't stop or don't | |
5428 | print. */ | |
5429 | if (!bs->stop || !bs->print) | |
5430 | bs->print_it = print_it_noop; | |
429374b8 | 5431 | } |
876fa593 | 5432 | |
d983da9c DJ |
5433 | /* If we aren't stopping, the value of some hardware watchpoint may |
5434 | not have changed, but the intermediate memory locations we are | |
5435 | watching may have. Don't bother if we're stopping; this will get | |
5436 | done later. */ | |
d832cb68 | 5437 | need_remove_insert = 0; |
5760d0ab JK |
5438 | if (! bpstat_causes_stop (bs_head)) |
5439 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5440 | if (!bs->stop |
f431efe5 PA |
5441 | && bs->breakpoint_at |
5442 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5443 | { |
3a5c3e22 PA |
5444 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5445 | ||
5446 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5447 | need_remove_insert = 1; |
d983da9c DJ |
5448 | } |
5449 | ||
d832cb68 | 5450 | if (need_remove_insert) |
44702360 | 5451 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5452 | else if (removed_any) |
44702360 | 5453 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5454 | |
5760d0ab | 5455 | return bs_head; |
c906108c | 5456 | } |
628fe4e4 JK |
5457 | |
5458 | static void | |
5459 | handle_jit_event (void) | |
5460 | { | |
5461 | struct frame_info *frame; | |
5462 | struct gdbarch *gdbarch; | |
5463 | ||
243a9253 PA |
5464 | if (debug_infrun) |
5465 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5466 | ||
628fe4e4 JK |
5467 | /* Switch terminal for any messages produced by |
5468 | breakpoint_re_set. */ | |
223ffa71 | 5469 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5470 | |
5471 | frame = get_current_frame (); | |
5472 | gdbarch = get_frame_arch (frame); | |
5473 | ||
5474 | jit_event_handler (gdbarch); | |
5475 | ||
223ffa71 | 5476 | target_terminal::inferior (); |
628fe4e4 JK |
5477 | } |
5478 | ||
5479 | /* Prepare WHAT final decision for infrun. */ | |
5480 | ||
5481 | /* Decide what infrun needs to do with this bpstat. */ | |
5482 | ||
c906108c | 5483 | struct bpstat_what |
0e30163f | 5484 | bpstat_what (bpstat bs_head) |
c906108c | 5485 | { |
c906108c | 5486 | struct bpstat_what retval; |
0e30163f | 5487 | bpstat bs; |
c906108c | 5488 | |
628fe4e4 | 5489 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5490 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5491 | retval.is_longjmp = false; |
628fe4e4 | 5492 | |
0e30163f | 5493 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5494 | { |
628fe4e4 JK |
5495 | /* Extract this BS's action. After processing each BS, we check |
5496 | if its action overrides all we've seem so far. */ | |
5497 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5498 | enum bptype bptype; | |
5499 | ||
c906108c | 5500 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5501 | { |
5502 | /* I suspect this can happen if it was a momentary | |
5503 | breakpoint which has since been deleted. */ | |
5504 | bptype = bp_none; | |
5505 | } | |
20874c92 | 5506 | else |
f431efe5 | 5507 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5508 | |
5509 | switch (bptype) | |
c906108c SS |
5510 | { |
5511 | case bp_none: | |
628fe4e4 | 5512 | break; |
c906108c SS |
5513 | case bp_breakpoint: |
5514 | case bp_hardware_breakpoint: | |
7c16b83e | 5515 | case bp_single_step: |
c906108c SS |
5516 | case bp_until: |
5517 | case bp_finish: | |
a9b3a50f | 5518 | case bp_shlib_event: |
c906108c SS |
5519 | if (bs->stop) |
5520 | { | |
5521 | if (bs->print) | |
628fe4e4 | 5522 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5523 | else |
628fe4e4 | 5524 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5525 | } |
5526 | else | |
628fe4e4 | 5527 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5528 | break; |
5529 | case bp_watchpoint: | |
5530 | case bp_hardware_watchpoint: | |
5531 | case bp_read_watchpoint: | |
5532 | case bp_access_watchpoint: | |
5533 | if (bs->stop) | |
5534 | { | |
5535 | if (bs->print) | |
628fe4e4 | 5536 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5537 | else |
628fe4e4 | 5538 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5539 | } |
5540 | else | |
628fe4e4 JK |
5541 | { |
5542 | /* There was a watchpoint, but we're not stopping. | |
5543 | This requires no further action. */ | |
5544 | } | |
c906108c SS |
5545 | break; |
5546 | case bp_longjmp: | |
e2e4d78b | 5547 | case bp_longjmp_call_dummy: |
186c406b | 5548 | case bp_exception: |
0a39bb32 PA |
5549 | if (bs->stop) |
5550 | { | |
5551 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5552 | retval.is_longjmp = bptype != bp_exception; | |
5553 | } | |
5554 | else | |
5555 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5556 | break; |
5557 | case bp_longjmp_resume: | |
186c406b | 5558 | case bp_exception_resume: |
0a39bb32 PA |
5559 | if (bs->stop) |
5560 | { | |
5561 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5562 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5563 | } | |
5564 | else | |
5565 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5566 | break; |
5567 | case bp_step_resume: | |
5568 | if (bs->stop) | |
628fe4e4 JK |
5569 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5570 | else | |
c906108c | 5571 | { |
628fe4e4 JK |
5572 | /* It is for the wrong frame. */ |
5573 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5574 | } |
c906108c | 5575 | break; |
2c03e5be PA |
5576 | case bp_hp_step_resume: |
5577 | if (bs->stop) | |
5578 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5579 | else | |
5580 | { | |
5581 | /* It is for the wrong frame. */ | |
5582 | this_action = BPSTAT_WHAT_SINGLE; | |
5583 | } | |
5584 | break; | |
c906108c | 5585 | case bp_watchpoint_scope: |
c4093a6a | 5586 | case bp_thread_event: |
1900040c | 5587 | case bp_overlay_event: |
0fd8e87f | 5588 | case bp_longjmp_master: |
aa7d318d | 5589 | case bp_std_terminate_master: |
186c406b | 5590 | case bp_exception_master: |
628fe4e4 | 5591 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5592 | break; |
ce78b96d | 5593 | case bp_catchpoint: |
c5aa993b JM |
5594 | if (bs->stop) |
5595 | { | |
5596 | if (bs->print) | |
628fe4e4 | 5597 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5598 | else |
628fe4e4 | 5599 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5600 | } |
5601 | else | |
628fe4e4 | 5602 | { |
cb1e4e32 PA |
5603 | /* Some catchpoints are implemented with breakpoints. |
5604 | For those, we need to step over the breakpoint. */ | |
5605 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5606 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5607 | } |
5608 | break; | |
628fe4e4 | 5609 | case bp_jit_event: |
628fe4e4 | 5610 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5611 | break; |
c906108c | 5612 | case bp_call_dummy: |
53a5351d JM |
5613 | /* Make sure the action is stop (silent or noisy), |
5614 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5615 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5616 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5617 | break; |
5618 | case bp_std_terminate: | |
5619 | /* Make sure the action is stop (silent or noisy), | |
5620 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5621 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5622 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5623 | break; |
1042e4c0 | 5624 | case bp_tracepoint: |
7a697b8d | 5625 | case bp_fast_tracepoint: |
0fb4aa4b | 5626 | case bp_static_tracepoint: |
1042e4c0 SS |
5627 | /* Tracepoint hits should not be reported back to GDB, and |
5628 | if one got through somehow, it should have been filtered | |
5629 | out already. */ | |
5630 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5631 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5632 | break; |
5633 | case bp_gnu_ifunc_resolver: | |
5634 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5635 | this_action = BPSTAT_WHAT_SINGLE; | |
5636 | break; | |
5637 | case bp_gnu_ifunc_resolver_return: | |
5638 | /* The breakpoint will be removed, execution will restart from the | |
5639 | PC of the former breakpoint. */ | |
5640 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5641 | break; | |
e7e0cddf SS |
5642 | |
5643 | case bp_dprintf: | |
a11cfd87 HZ |
5644 | if (bs->stop) |
5645 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5646 | else | |
5647 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5648 | break; |
5649 | ||
628fe4e4 JK |
5650 | default: |
5651 | internal_error (__FILE__, __LINE__, | |
5652 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5653 | } |
628fe4e4 | 5654 | |
325fac50 | 5655 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5656 | } |
628fe4e4 | 5657 | |
243a9253 PA |
5658 | return retval; |
5659 | } | |
628fe4e4 | 5660 | |
243a9253 PA |
5661 | void |
5662 | bpstat_run_callbacks (bpstat bs_head) | |
5663 | { | |
5664 | bpstat bs; | |
628fe4e4 | 5665 | |
0e30163f JK |
5666 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5667 | { | |
5668 | struct breakpoint *b = bs->breakpoint_at; | |
5669 | ||
5670 | if (b == NULL) | |
5671 | continue; | |
5672 | switch (b->type) | |
5673 | { | |
243a9253 PA |
5674 | case bp_jit_event: |
5675 | handle_jit_event (); | |
5676 | break; | |
0e30163f JK |
5677 | case bp_gnu_ifunc_resolver: |
5678 | gnu_ifunc_resolver_stop (b); | |
5679 | break; | |
5680 | case bp_gnu_ifunc_resolver_return: | |
5681 | gnu_ifunc_resolver_return_stop (b); | |
5682 | break; | |
5683 | } | |
5684 | } | |
c906108c SS |
5685 | } |
5686 | ||
4c462cb0 | 5687 | /* See breakpoint.h. */ |
c906108c | 5688 | |
4c462cb0 SM |
5689 | bool |
5690 | bpstat_should_step () | |
c906108c SS |
5691 | { |
5692 | struct breakpoint *b; | |
cc59ec59 | 5693 | |
c906108c | 5694 | ALL_BREAKPOINTS (b) |
717a8278 | 5695 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 SM |
5696 | return true; |
5697 | return false; | |
c906108c SS |
5698 | } |
5699 | ||
4c462cb0 SM |
5700 | /* See breakpoint.h. */ |
5701 | ||
5702 | bool | |
67822962 PA |
5703 | bpstat_causes_stop (bpstat bs) |
5704 | { | |
5705 | for (; bs != NULL; bs = bs->next) | |
5706 | if (bs->stop) | |
4c462cb0 | 5707 | return true; |
67822962 | 5708 | |
4c462cb0 | 5709 | return false; |
67822962 PA |
5710 | } |
5711 | ||
c906108c | 5712 | \f |
c5aa993b | 5713 | |
170b53b2 UW |
5714 | /* Compute a string of spaces suitable to indent the next line |
5715 | so it starts at the position corresponding to the table column | |
5716 | named COL_NAME in the currently active table of UIOUT. */ | |
5717 | ||
5718 | static char * | |
5719 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5720 | { | |
5721 | static char wrap_indent[80]; | |
5722 | int i, total_width, width, align; | |
c5209615 | 5723 | const char *text; |
170b53b2 UW |
5724 | |
5725 | total_width = 0; | |
112e8700 | 5726 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5727 | { |
5728 | if (strcmp (text, col_name) == 0) | |
5729 | { | |
5730 | gdb_assert (total_width < sizeof wrap_indent); | |
5731 | memset (wrap_indent, ' ', total_width); | |
5732 | wrap_indent[total_width] = 0; | |
5733 | ||
5734 | return wrap_indent; | |
5735 | } | |
5736 | ||
5737 | total_width += width + 1; | |
5738 | } | |
5739 | ||
5740 | return NULL; | |
5741 | } | |
5742 | ||
b775012e LM |
5743 | /* Determine if the locations of this breakpoint will have their conditions |
5744 | evaluated by the target, host or a mix of both. Returns the following: | |
5745 | ||
5746 | "host": Host evals condition. | |
5747 | "host or target": Host or Target evals condition. | |
5748 | "target": Target evals condition. | |
5749 | */ | |
5750 | ||
5751 | static const char * | |
5752 | bp_condition_evaluator (struct breakpoint *b) | |
5753 | { | |
5754 | struct bp_location *bl; | |
5755 | char host_evals = 0; | |
5756 | char target_evals = 0; | |
5757 | ||
5758 | if (!b) | |
5759 | return NULL; | |
5760 | ||
5761 | if (!is_breakpoint (b)) | |
5762 | return NULL; | |
5763 | ||
5764 | if (gdb_evaluates_breakpoint_condition_p () | |
5765 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5766 | return condition_evaluation_host; | |
5767 | ||
5768 | for (bl = b->loc; bl; bl = bl->next) | |
5769 | { | |
5770 | if (bl->cond_bytecode) | |
5771 | target_evals++; | |
5772 | else | |
5773 | host_evals++; | |
5774 | } | |
5775 | ||
5776 | if (host_evals && target_evals) | |
5777 | return condition_evaluation_both; | |
5778 | else if (target_evals) | |
5779 | return condition_evaluation_target; | |
5780 | else | |
5781 | return condition_evaluation_host; | |
5782 | } | |
5783 | ||
5784 | /* Determine the breakpoint location's condition evaluator. This is | |
5785 | similar to bp_condition_evaluator, but for locations. */ | |
5786 | ||
5787 | static const char * | |
5788 | bp_location_condition_evaluator (struct bp_location *bl) | |
5789 | { | |
5790 | if (bl && !is_breakpoint (bl->owner)) | |
5791 | return NULL; | |
5792 | ||
5793 | if (gdb_evaluates_breakpoint_condition_p () | |
5794 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5795 | return condition_evaluation_host; | |
5796 | ||
5797 | if (bl && bl->cond_bytecode) | |
5798 | return condition_evaluation_target; | |
5799 | else | |
5800 | return condition_evaluation_host; | |
5801 | } | |
5802 | ||
859825b8 JK |
5803 | /* Print the LOC location out of the list of B->LOC locations. */ |
5804 | ||
170b53b2 UW |
5805 | static void |
5806 | print_breakpoint_location (struct breakpoint *b, | |
5807 | struct bp_location *loc) | |
0d381245 | 5808 | { |
79a45e25 | 5809 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5810 | |
5811 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5812 | |
859825b8 JK |
5813 | if (loc != NULL && loc->shlib_disabled) |
5814 | loc = NULL; | |
5815 | ||
6c95b8df PA |
5816 | if (loc != NULL) |
5817 | set_current_program_space (loc->pspace); | |
5818 | ||
56435ebe | 5819 | if (b->display_canonical) |
d28cd78a | 5820 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5821 | else if (loc && loc->symtab) |
0d381245 | 5822 | { |
4a27f119 KS |
5823 | const struct symbol *sym = loc->symbol; |
5824 | ||
0d381245 VP |
5825 | if (sym) |
5826 | { | |
112e8700 | 5827 | uiout->text ("in "); |
987012b8 | 5828 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5829 | function_name_style.style ()); |
112e8700 SM |
5830 | uiout->text (" "); |
5831 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5832 | uiout->text ("at "); | |
0d381245 | 5833 | } |
112e8700 | 5834 | uiout->field_string ("file", |
cbe56571 | 5835 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5836 | file_name_style.style ()); |
112e8700 | 5837 | uiout->text (":"); |
05cba821 | 5838 | |
112e8700 SM |
5839 | if (uiout->is_mi_like_p ()) |
5840 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5841 | |
381befee | 5842 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5843 | } |
859825b8 | 5844 | else if (loc) |
0d381245 | 5845 | { |
d7e74731 | 5846 | string_file stb; |
170b53b2 | 5847 | |
d7e74731 | 5848 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5849 | demangle, ""); |
112e8700 | 5850 | uiout->field_stream ("at", stb); |
0d381245 | 5851 | } |
859825b8 | 5852 | else |
f00aae0f | 5853 | { |
d28cd78a TT |
5854 | uiout->field_string ("pending", |
5855 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5856 | /* If extra_string is available, it could be holding a condition |
5857 | or dprintf arguments. In either case, make sure it is printed, | |
5858 | too, but only for non-MI streams. */ | |
112e8700 | 5859 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5860 | { |
5861 | if (b->type == bp_dprintf) | |
112e8700 | 5862 | uiout->text (","); |
f00aae0f | 5863 | else |
112e8700 SM |
5864 | uiout->text (" "); |
5865 | uiout->text (b->extra_string); | |
f00aae0f KS |
5866 | } |
5867 | } | |
6c95b8df | 5868 | |
b775012e LM |
5869 | if (loc && is_breakpoint (b) |
5870 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5871 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5872 | { | |
112e8700 SM |
5873 | uiout->text (" ("); |
5874 | uiout->field_string ("evaluated-by", | |
b775012e | 5875 | bp_location_condition_evaluator (loc)); |
112e8700 | 5876 | uiout->text (")"); |
b775012e | 5877 | } |
0d381245 VP |
5878 | } |
5879 | ||
269b11a2 PA |
5880 | static const char * |
5881 | bptype_string (enum bptype type) | |
c906108c | 5882 | { |
c4093a6a JM |
5883 | struct ep_type_description |
5884 | { | |
5885 | enum bptype type; | |
a121b7c1 | 5886 | const char *description; |
c4093a6a JM |
5887 | }; |
5888 | static struct ep_type_description bptypes[] = | |
c906108c | 5889 | { |
c5aa993b JM |
5890 | {bp_none, "?deleted?"}, |
5891 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5892 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5893 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5894 | {bp_until, "until"}, |
5895 | {bp_finish, "finish"}, | |
5896 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5897 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5898 | {bp_read_watchpoint, "read watchpoint"}, |
5899 | {bp_access_watchpoint, "acc watchpoint"}, | |
5900 | {bp_longjmp, "longjmp"}, | |
5901 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5902 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5903 | {bp_exception, "exception"}, |
5904 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5905 | {bp_step_resume, "step resume"}, |
2c03e5be | 5906 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5907 | {bp_watchpoint_scope, "watchpoint scope"}, |
5908 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5909 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5910 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5911 | {bp_thread_event, "thread events"}, |
1900040c | 5912 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5913 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5914 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5915 | {bp_exception_master, "exception master"}, |
ce78b96d | 5916 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5917 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5918 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5919 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5920 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5921 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5922 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5923 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5924 | }; |
269b11a2 PA |
5925 | |
5926 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5927 | || ((int) type != bptypes[(int) type].type)) | |
5928 | internal_error (__FILE__, __LINE__, | |
5929 | _("bptypes table does not describe type #%d."), | |
5930 | (int) type); | |
5931 | ||
5932 | return bptypes[(int) type].description; | |
5933 | } | |
5934 | ||
998580f1 MK |
5935 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5936 | For CLI, prefix the list with the string 'inf'. */ | |
5937 | ||
5938 | static void | |
5939 | output_thread_groups (struct ui_out *uiout, | |
5940 | const char *field_name, | |
5c632425 | 5941 | const std::vector<int> &inf_nums, |
998580f1 MK |
5942 | int mi_only) |
5943 | { | |
112e8700 | 5944 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5945 | |
5946 | /* For backward compatibility, don't display inferiors in CLI unless | |
5947 | there are several. Always display them for MI. */ | |
5948 | if (!is_mi && mi_only) | |
5949 | return; | |
5950 | ||
10f489e5 | 5951 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5952 | |
5c632425 | 5953 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5954 | { |
5955 | if (is_mi) | |
5956 | { | |
5957 | char mi_group[10]; | |
5958 | ||
5c632425 | 5959 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5960 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5961 | } |
5962 | else | |
5963 | { | |
5964 | if (i == 0) | |
112e8700 | 5965 | uiout->text (" inf "); |
998580f1 | 5966 | else |
112e8700 | 5967 | uiout->text (", "); |
998580f1 | 5968 | |
5c632425 | 5969 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
5970 | } |
5971 | } | |
998580f1 MK |
5972 | } |
5973 | ||
a38118e5 PA |
5974 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
5975 | instead of going via breakpoint_ops::print_one. This makes "maint | |
5976 | info breakpoints" show the software breakpoint locations of | |
5977 | catchpoints, which are considered internal implementation | |
5978 | detail. */ | |
269b11a2 PA |
5979 | |
5980 | static void | |
5981 | print_one_breakpoint_location (struct breakpoint *b, | |
5982 | struct bp_location *loc, | |
5983 | int loc_number, | |
5984 | struct bp_location **last_loc, | |
a38118e5 | 5985 | int allflag, bool raw_loc) |
269b11a2 PA |
5986 | { |
5987 | struct command_line *l; | |
c2c6d25f | 5988 | static char bpenables[] = "nynny"; |
c906108c | 5989 | |
79a45e25 | 5990 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5991 | int header_of_multiple = 0; |
5992 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5993 | struct value_print_options opts; |
5994 | ||
5995 | get_user_print_options (&opts); | |
0d381245 VP |
5996 | |
5997 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5998 | /* See comment in print_one_breakpoint concerning treatment of |
5999 | breakpoints with single disabled location. */ | |
0d381245 VP |
6000 | if (loc == NULL |
6001 | && (b->loc != NULL | |
6002 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6003 | header_of_multiple = 1; | |
6004 | if (loc == NULL) | |
6005 | loc = b->loc; | |
6006 | ||
c4093a6a JM |
6007 | annotate_record (); |
6008 | ||
6009 | /* 1 */ | |
6010 | annotate_field (0); | |
0d381245 | 6011 | if (part_of_multiple) |
528e1572 | 6012 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6013 | else |
381befee | 6014 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6015 | |
6016 | /* 2 */ | |
6017 | annotate_field (1); | |
0d381245 | 6018 | if (part_of_multiple) |
112e8700 | 6019 | uiout->field_skip ("type"); |
269b11a2 | 6020 | else |
112e8700 | 6021 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6022 | |
6023 | /* 3 */ | |
6024 | annotate_field (2); | |
0d381245 | 6025 | if (part_of_multiple) |
112e8700 | 6026 | uiout->field_skip ("disp"); |
0d381245 | 6027 | else |
112e8700 | 6028 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6029 | |
c4093a6a JM |
6030 | /* 4 */ |
6031 | annotate_field (3); | |
0d381245 | 6032 | if (part_of_multiple) |
112e8700 | 6033 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6034 | else |
112e8700 | 6035 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6036 | |
c4093a6a | 6037 | /* 5 and 6 */ |
a38118e5 | 6038 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6039 | b->ops->print_one (b, last_loc); |
3086aeae | 6040 | else |
a38118e5 PA |
6041 | { |
6042 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6043 | { |
6044 | struct watchpoint *w = (struct watchpoint *) b; | |
6045 | ||
6046 | /* Field 4, the address, is omitted (which makes the columns | |
6047 | not line up too nicely with the headers, but the effect | |
6048 | is relatively readable). */ | |
6049 | if (opts.addressprint) | |
112e8700 | 6050 | uiout->field_skip ("addr"); |
3a5c3e22 | 6051 | annotate_field (5); |
112e8700 | 6052 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6053 | } |
f06f1252 TT |
6054 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6055 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6056 | { |
6057 | if (opts.addressprint) | |
6058 | { | |
6059 | annotate_field (4); | |
6060 | if (header_of_multiple) | |
7f6aba03 TT |
6061 | uiout->field_string ("addr", "<MULTIPLE>", |
6062 | metadata_style.style ()); | |
a38118e5 | 6063 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6064 | uiout->field_string ("addr", "<PENDING>", |
6065 | metadata_style.style ()); | |
a38118e5 PA |
6066 | else |
6067 | uiout->field_core_addr ("addr", | |
6068 | loc->gdbarch, loc->address); | |
6069 | } | |
6070 | annotate_field (5); | |
6071 | if (!header_of_multiple) | |
6072 | print_breakpoint_location (b, loc); | |
6073 | if (b->loc) | |
6074 | *last_loc = b->loc; | |
6075 | } | |
6076 | } | |
6c95b8df | 6077 | |
998580f1 | 6078 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6079 | { |
5c632425 | 6080 | std::vector<int> inf_nums; |
998580f1 | 6081 | int mi_only = 1; |
6c95b8df | 6082 | |
08036331 | 6083 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6084 | { |
6085 | if (inf->pspace == loc->pspace) | |
5c632425 | 6086 | inf_nums.push_back (inf->num); |
6c95b8df | 6087 | } |
998580f1 MK |
6088 | |
6089 | /* For backward compatibility, don't display inferiors in CLI unless | |
6090 | there are several. Always display for MI. */ | |
6091 | if (allflag | |
6092 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6093 | && (number_of_program_spaces () > 1 | |
6094 | || number_of_inferiors () > 1) | |
6095 | /* LOC is for existing B, it cannot be in | |
6096 | moribund_locations and thus having NULL OWNER. */ | |
6097 | && loc->owner->type != bp_catchpoint)) | |
6098 | mi_only = 0; | |
5c632425 | 6099 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6100 | } |
6101 | ||
4a306c9a | 6102 | if (!part_of_multiple) |
c4093a6a | 6103 | { |
4a306c9a JB |
6104 | if (b->thread != -1) |
6105 | { | |
6106 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6107 | "stop only in" line a little further down. */ |
112e8700 | 6108 | uiout->text (" thread "); |
381befee | 6109 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6110 | } |
6111 | else if (b->task != 0) | |
6112 | { | |
112e8700 | 6113 | uiout->text (" task "); |
381befee | 6114 | uiout->field_signed ("task", b->task); |
4a306c9a | 6115 | } |
c4093a6a | 6116 | } |
f1310107 | 6117 | |
112e8700 | 6118 | uiout->text ("\n"); |
f1310107 | 6119 | |
348d480f | 6120 | if (!part_of_multiple) |
f1310107 TJB |
6121 | b->ops->print_one_detail (b, uiout); |
6122 | ||
0d381245 | 6123 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6124 | { |
6125 | annotate_field (6); | |
112e8700 | 6126 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6127 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6128 | the frame ID. */ |
112e8700 | 6129 | uiout->field_core_addr ("frame", |
5af949e3 | 6130 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6131 | uiout->text ("\n"); |
c4093a6a JM |
6132 | } |
6133 | ||
28010a5d | 6134 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6135 | { |
6136 | annotate_field (7); | |
d77f58be | 6137 | if (is_tracepoint (b)) |
112e8700 | 6138 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6139 | else |
112e8700 SM |
6140 | uiout->text ("\tstop only if "); |
6141 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6142 | |
6143 | /* Print whether the target is doing the breakpoint's condition | |
6144 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6145 | if (is_breakpoint (b) | |
6146 | && breakpoint_condition_evaluation_mode () | |
6147 | == condition_evaluation_target) | |
6148 | { | |
6a831f06 PA |
6149 | uiout->message (" (%pF evals)", |
6150 | string_field ("evaluated-by", | |
6151 | bp_condition_evaluator (b))); | |
b775012e | 6152 | } |
112e8700 | 6153 | uiout->text ("\n"); |
0101ce28 JJ |
6154 | } |
6155 | ||
0d381245 | 6156 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6157 | { |
4a64f543 | 6158 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6159 | uiout->text ("\tstop only in thread "); |
6160 | if (uiout->is_mi_like_p ()) | |
381befee | 6161 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6162 | else |
6163 | { | |
6164 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6165 | ||
112e8700 | 6166 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6167 | } |
112e8700 | 6168 | uiout->text ("\n"); |
c4093a6a JM |
6169 | } |
6170 | ||
556ec64d YQ |
6171 | if (!part_of_multiple) |
6172 | { | |
6173 | if (b->hit_count) | |
31f56a27 YQ |
6174 | { |
6175 | /* FIXME should make an annotation for this. */ | |
6176 | if (is_catchpoint (b)) | |
112e8700 | 6177 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6178 | else if (is_tracepoint (b)) |
112e8700 | 6179 | uiout->text ("\ttracepoint"); |
31f56a27 | 6180 | else |
112e8700 SM |
6181 | uiout->text ("\tbreakpoint"); |
6182 | uiout->text (" already hit "); | |
381befee | 6183 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6184 | if (b->hit_count == 1) |
112e8700 | 6185 | uiout->text (" time\n"); |
31f56a27 | 6186 | else |
112e8700 | 6187 | uiout->text (" times\n"); |
31f56a27 | 6188 | } |
556ec64d YQ |
6189 | else |
6190 | { | |
31f56a27 | 6191 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6192 | if (uiout->is_mi_like_p ()) |
381befee | 6193 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6194 | } |
6195 | } | |
8b93c638 | 6196 | |
0d381245 | 6197 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6198 | { |
6199 | annotate_field (8); | |
6a831f06 PA |
6200 | uiout->message ("\tignore next %pF hits\n", |
6201 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6202 | } |
059fb39f | 6203 | |
816338b5 SS |
6204 | /* Note that an enable count of 1 corresponds to "enable once" |
6205 | behavior, which is reported by the combination of enablement and | |
6206 | disposition, so we don't need to mention it here. */ | |
6207 | if (!part_of_multiple && b->enable_count > 1) | |
6208 | { | |
6209 | annotate_field (8); | |
112e8700 | 6210 | uiout->text ("\tdisable after "); |
816338b5 SS |
6211 | /* Tweak the wording to clarify that ignore and enable counts |
6212 | are distinct, and have additive effect. */ | |
6213 | if (b->ignore_count) | |
112e8700 | 6214 | uiout->text ("additional "); |
816338b5 | 6215 | else |
112e8700 | 6216 | uiout->text ("next "); |
381befee | 6217 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6218 | uiout->text (" hits\n"); |
816338b5 SS |
6219 | } |
6220 | ||
f196051f SS |
6221 | if (!part_of_multiple && is_tracepoint (b)) |
6222 | { | |
6223 | struct tracepoint *tp = (struct tracepoint *) b; | |
6224 | ||
6225 | if (tp->traceframe_usage) | |
6226 | { | |
112e8700 | 6227 | uiout->text ("\ttrace buffer usage "); |
381befee | 6228 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6229 | uiout->text (" bytes\n"); |
f196051f SS |
6230 | } |
6231 | } | |
d3ce09f5 | 6232 | |
d1b0a7bf | 6233 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6234 | if (!part_of_multiple && l) |
c4093a6a JM |
6235 | { |
6236 | annotate_field (9); | |
2e783024 | 6237 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6238 | print_command_lines (uiout, l, 4); |
c4093a6a | 6239 | } |
d24317b4 | 6240 | |
d9b3f62e | 6241 | if (is_tracepoint (b)) |
1042e4c0 | 6242 | { |
d9b3f62e PA |
6243 | struct tracepoint *t = (struct tracepoint *) b; |
6244 | ||
6245 | if (!part_of_multiple && t->pass_count) | |
6246 | { | |
6247 | annotate_field (10); | |
112e8700 | 6248 | uiout->text ("\tpass count "); |
381befee | 6249 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6250 | uiout->text (" \n"); |
d9b3f62e | 6251 | } |
f2a8bc8a YQ |
6252 | |
6253 | /* Don't display it when tracepoint or tracepoint location is | |
6254 | pending. */ | |
6255 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6256 | { | |
6257 | annotate_field (11); | |
6258 | ||
112e8700 SM |
6259 | if (uiout->is_mi_like_p ()) |
6260 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6261 | loc->inserted ? "y" : "n"); |
6262 | else | |
6263 | { | |
6264 | if (loc->inserted) | |
112e8700 | 6265 | uiout->text ("\t"); |
f2a8bc8a | 6266 | else |
112e8700 SM |
6267 | uiout->text ("\tnot "); |
6268 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6269 | } |
6270 | } | |
1042e4c0 SS |
6271 | } |
6272 | ||
112e8700 | 6273 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6274 | { |
3a5c3e22 PA |
6275 | if (is_watchpoint (b)) |
6276 | { | |
6277 | struct watchpoint *w = (struct watchpoint *) b; | |
6278 | ||
112e8700 | 6279 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6280 | } |
f00aae0f | 6281 | else if (b->location != NULL |
d28cd78a | 6282 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6283 | uiout->field_string ("original-location", |
d28cd78a | 6284 | event_location_to_string (b->location.get ())); |
d24317b4 | 6285 | } |
c4093a6a | 6286 | } |
c5aa993b | 6287 | |
13674803 SM |
6288 | /* See breakpoint.h. */ |
6289 | ||
6290 | bool fix_multi_location_breakpoint_output_globally = false; | |
6291 | ||
0d381245 VP |
6292 | static void |
6293 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6294 | struct bp_location **last_loc, |
6c95b8df | 6295 | int allflag) |
0d381245 | 6296 | { |
79a45e25 | 6297 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6298 | bool use_fixed_output |
6299 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6300 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6301 | |
b4be1b06 | 6302 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6303 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6304 | |
b4be1b06 SM |
6305 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6306 | are outside. */ | |
6307 | if (!use_fixed_output) | |
6308 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6309 | |
6310 | /* If this breakpoint has custom print function, | |
6311 | it's already printed. Otherwise, print individual | |
6312 | locations, if any. */ | |
a38118e5 PA |
6313 | if (b->ops == NULL |
6314 | || b->ops->print_one == NULL | |
6315 | || allflag) | |
0d381245 | 6316 | { |
4a64f543 MS |
6317 | /* If breakpoint has a single location that is disabled, we |
6318 | print it as if it had several locations, since otherwise it's | |
6319 | hard to represent "breakpoint enabled, location disabled" | |
6320 | situation. | |
6321 | ||
6322 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6323 | internally, that's not a property exposed to users. |
6324 | ||
6325 | Likewise, while catchpoints may be implemented with | |
6326 | breakpoints (e.g., catch throw), that's not a property | |
6327 | exposed to users. We do however display the internal | |
6328 | breakpoint locations with "maint info breakpoints". */ | |
6329 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6330 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6331 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6332 | && (allflag |
6333 | || (b->loc && (b->loc->next || !b->loc->enabled)))) | |
0d381245 | 6334 | { |
b4be1b06 SM |
6335 | gdb::optional<ui_out_emit_list> locations_list; |
6336 | ||
6337 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6338 | MI record. For later versions, place breakpoint locations in a | |
6339 | list. */ | |
6340 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6341 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6342 | |
b4be1b06 SM |
6343 | int n = 1; |
6344 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6345 | { |
b4be1b06 | 6346 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6347 | print_one_breakpoint_location (b, loc, n, last_loc, |
6348 | allflag, allflag); | |
8d3788bd | 6349 | } |
0d381245 VP |
6350 | } |
6351 | } | |
6352 | } | |
6353 | ||
a6d9a66e UW |
6354 | static int |
6355 | breakpoint_address_bits (struct breakpoint *b) | |
6356 | { | |
6357 | int print_address_bits = 0; | |
6358 | struct bp_location *loc; | |
6359 | ||
c6d81124 PA |
6360 | /* Software watchpoints that aren't watching memory don't have an |
6361 | address to print. */ | |
6362 | if (is_no_memory_software_watchpoint (b)) | |
6363 | return 0; | |
6364 | ||
a6d9a66e UW |
6365 | for (loc = b->loc; loc; loc = loc->next) |
6366 | { | |
c7437ca6 PA |
6367 | int addr_bit; |
6368 | ||
c7437ca6 | 6369 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6370 | if (addr_bit > print_address_bits) |
6371 | print_address_bits = addr_bit; | |
6372 | } | |
6373 | ||
6374 | return print_address_bits; | |
6375 | } | |
0d381245 | 6376 | |
65630365 | 6377 | /* See breakpoint.h. */ |
c5aa993b | 6378 | |
65630365 PA |
6379 | void |
6380 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6381 | { |
a6d9a66e | 6382 | struct bp_location *dummy_loc = NULL; |
65630365 | 6383 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6384 | } |
c5aa993b | 6385 | |
09d682a4 TT |
6386 | /* Return true if this breakpoint was set by the user, false if it is |
6387 | internal or momentary. */ | |
6388 | ||
6389 | int | |
6390 | user_breakpoint_p (struct breakpoint *b) | |
6391 | { | |
46c6471b | 6392 | return b->number > 0; |
09d682a4 TT |
6393 | } |
6394 | ||
93daf339 TT |
6395 | /* See breakpoint.h. */ |
6396 | ||
6397 | int | |
6398 | pending_breakpoint_p (struct breakpoint *b) | |
6399 | { | |
6400 | return b->loc == NULL; | |
6401 | } | |
6402 | ||
5c458ae8 SM |
6403 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6404 | ||
6405 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6406 | understood by number_or_range_parser. Only breakpoints included in this | |
6407 | list are then printed. | |
6408 | ||
6409 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6410 | ||
6411 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6412 | ones for which it returns true. | |
6413 | ||
6414 | Return the total number of breakpoints listed. */ | |
c906108c | 6415 | |
d77f58be | 6416 | static int |
5c458ae8 | 6417 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6418 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6419 | { |
52f0bd74 | 6420 | struct breakpoint *b; |
a6d9a66e | 6421 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6422 | int nr_printable_breakpoints; |
79a45b7d | 6423 | struct value_print_options opts; |
a6d9a66e | 6424 | int print_address_bits = 0; |
269b11a2 | 6425 | int print_type_col_width = 14; |
79a45e25 | 6426 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6427 | |
79a45b7d TT |
6428 | get_user_print_options (&opts); |
6429 | ||
4a64f543 MS |
6430 | /* Compute the number of rows in the table, as well as the size |
6431 | required for address fields. */ | |
7f3b0473 AC |
6432 | nr_printable_breakpoints = 0; |
6433 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6434 | { |
6435 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6436 | if (filter && !filter (b)) | |
6437 | continue; | |
6438 | ||
5c458ae8 | 6439 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6440 | accept. Skip the others. */ |
5c458ae8 | 6441 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6442 | { |
5c458ae8 | 6443 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6444 | continue; |
5c458ae8 | 6445 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6446 | continue; |
6447 | } | |
269b11a2 | 6448 | |
5c458ae8 | 6449 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6450 | { |
6451 | int addr_bit, type_len; | |
a6d9a66e | 6452 | |
e5a67952 MS |
6453 | addr_bit = breakpoint_address_bits (b); |
6454 | if (addr_bit > print_address_bits) | |
6455 | print_address_bits = addr_bit; | |
269b11a2 | 6456 | |
e5a67952 MS |
6457 | type_len = strlen (bptype_string (b->type)); |
6458 | if (type_len > print_type_col_width) | |
6459 | print_type_col_width = type_len; | |
6460 | ||
6461 | nr_printable_breakpoints++; | |
6462 | } | |
6463 | } | |
7f3b0473 | 6464 | |
4a2b031d TT |
6465 | { |
6466 | ui_out_emit_table table_emitter (uiout, | |
6467 | opts.addressprint ? 6 : 5, | |
6468 | nr_printable_breakpoints, | |
6469 | "BreakpointTable"); | |
6470 | ||
6471 | if (nr_printable_breakpoints > 0) | |
6472 | annotate_breakpoints_headers (); | |
6473 | if (nr_printable_breakpoints > 0) | |
6474 | annotate_field (0); | |
6475 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6476 | if (nr_printable_breakpoints > 0) | |
6477 | annotate_field (1); | |
6478 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6479 | if (nr_printable_breakpoints > 0) | |
6480 | annotate_field (2); | |
6481 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6482 | if (nr_printable_breakpoints > 0) | |
6483 | annotate_field (3); | |
6484 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6485 | if (opts.addressprint) | |
6486 | { | |
6487 | if (nr_printable_breakpoints > 0) | |
6488 | annotate_field (4); | |
6489 | if (print_address_bits <= 32) | |
6490 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6491 | else | |
6492 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6493 | } | |
6494 | if (nr_printable_breakpoints > 0) | |
6495 | annotate_field (5); | |
6496 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6497 | uiout->table_body (); | |
6498 | if (nr_printable_breakpoints > 0) | |
6499 | annotate_breakpoints_table (); | |
6500 | ||
6501 | ALL_BREAKPOINTS (b) | |
6502 | { | |
6503 | QUIT; | |
6504 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6505 | if (filter && !filter (b)) | |
6506 | continue; | |
e5a67952 | 6507 | |
5c458ae8 | 6508 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6509 | accept. Skip the others. */ |
e5a67952 | 6510 | |
5c458ae8 | 6511 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6512 | { |
5c458ae8 | 6513 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6514 | { |
5c458ae8 | 6515 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6516 | continue; |
6517 | } | |
6518 | else /* all others */ | |
6519 | { | |
5c458ae8 | 6520 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6521 | continue; |
6522 | } | |
6523 | } | |
6524 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6525 | show_internal is set. */ |
6526 | if (show_internal || user_breakpoint_p (b)) | |
6527 | print_one_breakpoint (b, &last_loc, show_internal); | |
4a2b031d TT |
6528 | } |
6529 | } | |
698384cd | 6530 | |
7f3b0473 | 6531 | if (nr_printable_breakpoints == 0) |
c906108c | 6532 | { |
4a64f543 MS |
6533 | /* If there's a filter, let the caller decide how to report |
6534 | empty list. */ | |
d77f58be SS |
6535 | if (!filter) |
6536 | { | |
5c458ae8 | 6537 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6538 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6539 | else |
112e8700 | 6540 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6541 | bp_num_list); |
d77f58be | 6542 | } |
c906108c SS |
6543 | } |
6544 | else | |
c4093a6a | 6545 | { |
a6d9a66e UW |
6546 | if (last_loc && !server_command) |
6547 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6548 | } |
c906108c | 6549 | |
4a64f543 | 6550 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6551 | there have been breakpoints? */ |
c906108c | 6552 | annotate_breakpoints_table_end (); |
d77f58be SS |
6553 | |
6554 | return nr_printable_breakpoints; | |
c906108c SS |
6555 | } |
6556 | ||
ad443146 SS |
6557 | /* Display the value of default-collect in a way that is generally |
6558 | compatible with the breakpoint list. */ | |
6559 | ||
6560 | static void | |
6561 | default_collect_info (void) | |
6562 | { | |
79a45e25 PA |
6563 | struct ui_out *uiout = current_uiout; |
6564 | ||
ad443146 SS |
6565 | /* If it has no value (which is frequently the case), say nothing; a |
6566 | message like "No default-collect." gets in user's face when it's | |
6567 | not wanted. */ | |
6568 | if (!*default_collect) | |
6569 | return; | |
6570 | ||
6571 | /* The following phrase lines up nicely with per-tracepoint collect | |
6572 | actions. */ | |
112e8700 SM |
6573 | uiout->text ("default collect "); |
6574 | uiout->field_string ("default-collect", default_collect); | |
6575 | uiout->text (" \n"); | |
ad443146 SS |
6576 | } |
6577 | ||
c906108c | 6578 | static void |
0b39b52e | 6579 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6580 | { |
5c458ae8 | 6581 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6582 | |
6583 | default_collect_info (); | |
d77f58be SS |
6584 | } |
6585 | ||
6586 | static void | |
1d12d88f | 6587 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6588 | { |
5c458ae8 | 6589 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6590 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6591 | |
6592 | if (num_printed == 0) | |
6593 | { | |
e5a67952 | 6594 | if (args == NULL || *args == '\0') |
112e8700 | 6595 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6596 | else |
112e8700 | 6597 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6598 | } |
c906108c SS |
6599 | } |
6600 | ||
7a292a7a | 6601 | static void |
4495129a | 6602 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6603 | { |
5c458ae8 | 6604 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6605 | |
6606 | default_collect_info (); | |
c906108c SS |
6607 | } |
6608 | ||
0d381245 | 6609 | static int |
714835d5 | 6610 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6611 | struct program_space *pspace, |
714835d5 | 6612 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6613 | { |
6614 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6615 | |
0d381245 VP |
6616 | for (; bl; bl = bl->next) |
6617 | { | |
6c95b8df PA |
6618 | if (bl->pspace == pspace |
6619 | && bl->address == pc | |
0d381245 VP |
6620 | && (!overlay_debugging || bl->section == section)) |
6621 | return 1; | |
6622 | } | |
6623 | return 0; | |
6624 | } | |
6625 | ||
672f9b60 | 6626 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6627 | concerns with logical breakpoints, so we match program spaces, not |
6628 | address spaces. */ | |
c906108c SS |
6629 | |
6630 | static void | |
6c95b8df PA |
6631 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6632 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6633 | struct obj_section *section, int thread) |
c906108c | 6634 | { |
52f0bd74 AC |
6635 | int others = 0; |
6636 | struct breakpoint *b; | |
c906108c SS |
6637 | |
6638 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6639 | others += (user_breakpoint_p (b) |
6640 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6641 | if (others > 0) |
6642 | { | |
a3f17187 AC |
6643 | if (others == 1) |
6644 | printf_filtered (_("Note: breakpoint ")); | |
6645 | else /* if (others == ???) */ | |
6646 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6647 | ALL_BREAKPOINTS (b) |
672f9b60 | 6648 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6649 | { |
6650 | others--; | |
6651 | printf_filtered ("%d", b->number); | |
6652 | if (b->thread == -1 && thread != -1) | |
6653 | printf_filtered (" (all threads)"); | |
6654 | else if (b->thread != -1) | |
6655 | printf_filtered (" (thread %d)", b->thread); | |
6656 | printf_filtered ("%s%s ", | |
059fb39f | 6657 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6658 | || b->enable_state == bp_call_disabled) |
0d381245 | 6659 | ? " (disabled)" |
0d381245 VP |
6660 | : ""), |
6661 | (others > 1) ? "," | |
6662 | : ((others == 1) ? " and" : "")); | |
6663 | } | |
6a831f06 PA |
6664 | current_uiout->message (_("also set at pc %ps.\n"), |
6665 | styled_string (address_style.style (), | |
6666 | paddress (gdbarch, pc))); | |
c906108c SS |
6667 | } |
6668 | } | |
6669 | \f | |
c906108c | 6670 | |
cb1e4e32 PA |
6671 | /* Return true iff it is meaningful to use the address member of LOC. |
6672 | For some breakpoint types, the locations' address members are | |
6673 | irrelevant and it makes no sense to attempt to compare them to | |
6674 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6675 | |
cb1e4e32 PA |
6676 | More specifically, software watchpoints and catchpoints that are |
6677 | not backed by breakpoints always have a zero valued location | |
6678 | address and we don't want to mark breakpoints of any of these types | |
6679 | to be a duplicate of an actual breakpoint location at address | |
6680 | zero. */ | |
e4f237da | 6681 | |
cb1e4e32 PA |
6682 | static bool |
6683 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6684 | { |
cb1e4e32 | 6685 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6686 | } |
6687 | ||
6688 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6689 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6690 | ||
6691 | static int | |
4a64f543 MS |
6692 | watchpoint_locations_match (struct bp_location *loc1, |
6693 | struct bp_location *loc2) | |
2d134ed3 | 6694 | { |
3a5c3e22 PA |
6695 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6696 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6697 | ||
6698 | /* Both of them must exist. */ | |
6699 | gdb_assert (w1 != NULL); | |
6700 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6701 | |
4a64f543 MS |
6702 | /* If the target can evaluate the condition expression in hardware, |
6703 | then we we need to insert both watchpoints even if they are at | |
6704 | the same place. Otherwise the watchpoint will only trigger when | |
6705 | the condition of whichever watchpoint was inserted evaluates to | |
6706 | true, not giving a chance for GDB to check the condition of the | |
6707 | other watchpoint. */ | |
3a5c3e22 | 6708 | if ((w1->cond_exp |
4a64f543 MS |
6709 | && target_can_accel_watchpoint_condition (loc1->address, |
6710 | loc1->length, | |
0cf6dd15 | 6711 | loc1->watchpoint_type, |
4d01a485 | 6712 | w1->cond_exp.get ())) |
3a5c3e22 | 6713 | || (w2->cond_exp |
4a64f543 MS |
6714 | && target_can_accel_watchpoint_condition (loc2->address, |
6715 | loc2->length, | |
0cf6dd15 | 6716 | loc2->watchpoint_type, |
4d01a485 | 6717 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6718 | return 0; |
6719 | ||
85d721b8 PA |
6720 | /* Note that this checks the owner's type, not the location's. In |
6721 | case the target does not support read watchpoints, but does | |
6722 | support access watchpoints, we'll have bp_read_watchpoint | |
6723 | watchpoints with hw_access locations. Those should be considered | |
6724 | duplicates of hw_read locations. The hw_read locations will | |
6725 | become hw_access locations later. */ | |
2d134ed3 PA |
6726 | return (loc1->owner->type == loc2->owner->type |
6727 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6728 | && loc1->address == loc2->address | |
6729 | && loc1->length == loc2->length); | |
e4f237da KB |
6730 | } |
6731 | ||
31e77af2 | 6732 | /* See breakpoint.h. */ |
6c95b8df | 6733 | |
31e77af2 | 6734 | int |
accd0bcd YQ |
6735 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6736 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6737 | { |
f5656ead | 6738 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6739 | || aspace1 == aspace2) |
6740 | && addr1 == addr2); | |
6741 | } | |
6742 | ||
f1310107 TJB |
6743 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6744 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6745 | matches ASPACE2. On targets that have global breakpoints, the address | |
6746 | space doesn't really matter. */ | |
6747 | ||
6748 | static int | |
accd0bcd YQ |
6749 | breakpoint_address_match_range (const address_space *aspace1, |
6750 | CORE_ADDR addr1, | |
6751 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6752 | CORE_ADDR addr2) |
6753 | { | |
f5656ead | 6754 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6755 | || aspace1 == aspace2) |
6756 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6757 | } | |
6758 | ||
6759 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6760 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6761 | matches the breakpoint's address space. On targets that have global | |
6762 | breakpoints, the address space doesn't really matter. */ | |
6763 | ||
6764 | static int | |
6765 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6766 | const address_space *aspace, |
f1310107 TJB |
6767 | CORE_ADDR addr) |
6768 | { | |
6769 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6770 | aspace, addr) | |
6771 | || (bl->length | |
6772 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6773 | bl->address, bl->length, | |
6774 | aspace, addr))); | |
6775 | } | |
6776 | ||
d35ae833 PA |
6777 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6778 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6779 | match happens only if ASPACE matches the breakpoint's address | |
6780 | space. On targets that have global breakpoints, the address space | |
6781 | doesn't really matter. */ | |
6782 | ||
6783 | static int | |
6784 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6785 | const address_space *aspace, |
d35ae833 PA |
6786 | CORE_ADDR addr, int len) |
6787 | { | |
6788 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6789 | || bl->pspace->aspace == aspace) | |
6790 | { | |
6791 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6792 | ||
6793 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6794 | return 1; | |
6795 | } | |
6796 | return 0; | |
6797 | } | |
6798 | ||
1e4d1764 YQ |
6799 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6800 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6801 | true, otherwise returns false. */ | |
6802 | ||
6803 | static int | |
6804 | tracepoint_locations_match (struct bp_location *loc1, | |
6805 | struct bp_location *loc2) | |
6806 | { | |
6807 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6808 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6809 | locations at the same address of different tracepoints are regarded as | |
6810 | different locations. */ | |
6811 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6812 | else | |
6813 | return 0; | |
6814 | } | |
6815 | ||
2d134ed3 | 6816 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 PA |
6817 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
6818 | the same location. */ | |
2d134ed3 PA |
6819 | |
6820 | static int | |
4a64f543 MS |
6821 | breakpoint_locations_match (struct bp_location *loc1, |
6822 | struct bp_location *loc2) | |
2d134ed3 | 6823 | { |
2bdf28a0 JK |
6824 | int hw_point1, hw_point2; |
6825 | ||
6826 | /* Both of them must not be in moribund_locations. */ | |
6827 | gdb_assert (loc1->owner != NULL); | |
6828 | gdb_assert (loc2->owner != NULL); | |
6829 | ||
6830 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6831 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6832 | |
6833 | if (hw_point1 != hw_point2) | |
6834 | return 0; | |
6835 | else if (hw_point1) | |
6836 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6837 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6838 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6839 | else |
f1310107 TJB |
6840 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6841 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6842 | loc2->pspace->aspace, loc2->address) | |
6843 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6844 | } |
6845 | ||
76897487 KB |
6846 | static void |
6847 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6848 | int bnum, int have_bnum) | |
6849 | { | |
f63fbe86 MS |
6850 | /* The longest string possibly returned by hex_string_custom |
6851 | is 50 chars. These must be at least that big for safety. */ | |
6852 | char astr1[64]; | |
6853 | char astr2[64]; | |
76897487 | 6854 | |
bb599908 PH |
6855 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6856 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6857 | if (have_bnum) |
8a3fe4f8 | 6858 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6859 | bnum, astr1, astr2); |
6860 | else | |
8a3fe4f8 | 6861 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6862 | } |
6863 | ||
4a64f543 MS |
6864 | /* Adjust a breakpoint's address to account for architectural |
6865 | constraints on breakpoint placement. Return the adjusted address. | |
6866 | Note: Very few targets require this kind of adjustment. For most | |
6867 | targets, this function is simply the identity function. */ | |
76897487 KB |
6868 | |
6869 | static CORE_ADDR | |
a6d9a66e UW |
6870 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6871 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6872 | { |
a0de8c21 YQ |
6873 | if (bptype == bp_watchpoint |
6874 | || bptype == bp_hardware_watchpoint | |
6875 | || bptype == bp_read_watchpoint | |
6876 | || bptype == bp_access_watchpoint | |
6877 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6878 | { |
6879 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6880 | have their addresses modified. */ | |
6881 | return bpaddr; | |
6882 | } | |
7c16b83e PA |
6883 | else if (bptype == bp_single_step) |
6884 | { | |
6885 | /* Single-step breakpoints should not have their addresses | |
6886 | modified. If there's any architectural constrain that | |
6887 | applies to this address, then it should have already been | |
6888 | taken into account when the breakpoint was created in the | |
6889 | first place. If we didn't do this, stepping through e.g., | |
6890 | Thumb-2 IT blocks would break. */ | |
6891 | return bpaddr; | |
6892 | } | |
76897487 KB |
6893 | else |
6894 | { | |
a0de8c21 YQ |
6895 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6896 | ||
6897 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6898 | { | |
6899 | /* Some targets have architectural constraints on the placement | |
6900 | of breakpoint instructions. Obtain the adjusted address. */ | |
6901 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6902 | } | |
76897487 | 6903 | |
a0de8c21 | 6904 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6905 | |
6906 | /* An adjusted breakpoint address can significantly alter | |
6907 | a user's expectations. Print a warning if an adjustment | |
6908 | is required. */ | |
6909 | if (adjusted_bpaddr != bpaddr) | |
6910 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6911 | ||
6912 | return adjusted_bpaddr; | |
6913 | } | |
6914 | } | |
6915 | ||
cb1e4e32 PA |
6916 | static bp_loc_type |
6917 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 6918 | { |
cb1e4e32 | 6919 | switch (type) |
e049a4b5 DJ |
6920 | { |
6921 | case bp_breakpoint: | |
7c16b83e | 6922 | case bp_single_step: |
e049a4b5 DJ |
6923 | case bp_until: |
6924 | case bp_finish: | |
6925 | case bp_longjmp: | |
6926 | case bp_longjmp_resume: | |
e2e4d78b | 6927 | case bp_longjmp_call_dummy: |
186c406b TT |
6928 | case bp_exception: |
6929 | case bp_exception_resume: | |
e049a4b5 | 6930 | case bp_step_resume: |
2c03e5be | 6931 | case bp_hp_step_resume: |
e049a4b5 DJ |
6932 | case bp_watchpoint_scope: |
6933 | case bp_call_dummy: | |
aa7d318d | 6934 | case bp_std_terminate: |
e049a4b5 DJ |
6935 | case bp_shlib_event: |
6936 | case bp_thread_event: | |
6937 | case bp_overlay_event: | |
4efc6507 | 6938 | case bp_jit_event: |
0fd8e87f | 6939 | case bp_longjmp_master: |
aa7d318d | 6940 | case bp_std_terminate_master: |
186c406b | 6941 | case bp_exception_master: |
0e30163f JK |
6942 | case bp_gnu_ifunc_resolver: |
6943 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6944 | case bp_dprintf: |
cb1e4e32 | 6945 | return bp_loc_software_breakpoint; |
e049a4b5 | 6946 | case bp_hardware_breakpoint: |
cb1e4e32 | 6947 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
6948 | case bp_hardware_watchpoint: |
6949 | case bp_read_watchpoint: | |
6950 | case bp_access_watchpoint: | |
cb1e4e32 | 6951 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 6952 | case bp_watchpoint: |
ce78b96d | 6953 | case bp_catchpoint: |
15c3d785 PA |
6954 | case bp_tracepoint: |
6955 | case bp_fast_tracepoint: | |
0fb4aa4b | 6956 | case bp_static_tracepoint: |
cb1e4e32 | 6957 | return bp_loc_other; |
e049a4b5 | 6958 | default: |
e2e0b3e5 | 6959 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 6960 | } |
cb1e4e32 PA |
6961 | } |
6962 | ||
6963 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
6964 | { | |
6965 | this->owner = owner; | |
6966 | this->cond_bytecode = NULL; | |
6967 | this->shlib_disabled = 0; | |
6968 | this->enabled = 1; | |
6969 | ||
6970 | this->loc_type = type; | |
e049a4b5 | 6971 | |
cb1e4e32 PA |
6972 | if (this->loc_type == bp_loc_software_breakpoint |
6973 | || this->loc_type == bp_loc_hardware_breakpoint) | |
6974 | mark_breakpoint_location_modified (this); | |
6975 | ||
6976 | this->refc = 1; | |
6977 | } | |
6978 | ||
6979 | bp_location::bp_location (breakpoint *owner) | |
6980 | : bp_location::bp_location (owner, | |
6981 | bp_location_from_bp_type (owner->type)) | |
6982 | { | |
28010a5d PA |
6983 | } |
6984 | ||
6985 | /* Allocate a struct bp_location. */ | |
6986 | ||
6987 | static struct bp_location * | |
6988 | allocate_bp_location (struct breakpoint *bpt) | |
6989 | { | |
348d480f PA |
6990 | return bpt->ops->allocate_location (bpt); |
6991 | } | |
7cc221ef | 6992 | |
f431efe5 PA |
6993 | static void |
6994 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6995 | { |
4d01a485 | 6996 | delete loc; |
fe3f5fa8 VP |
6997 | } |
6998 | ||
f431efe5 PA |
6999 | /* Increment reference count. */ |
7000 | ||
7001 | static void | |
7002 | incref_bp_location (struct bp_location *bl) | |
7003 | { | |
7004 | ++bl->refc; | |
7005 | } | |
7006 | ||
7007 | /* Decrement reference count. If the reference count reaches 0, | |
7008 | destroy the bp_location. Sets *BLP to NULL. */ | |
7009 | ||
7010 | static void | |
7011 | decref_bp_location (struct bp_location **blp) | |
7012 | { | |
0807b50c PA |
7013 | gdb_assert ((*blp)->refc > 0); |
7014 | ||
f431efe5 PA |
7015 | if (--(*blp)->refc == 0) |
7016 | free_bp_location (*blp); | |
7017 | *blp = NULL; | |
7018 | } | |
7019 | ||
346774a9 | 7020 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7021 | |
b270e6f9 TT |
7022 | static breakpoint * |
7023 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7024 | { |
346774a9 | 7025 | struct breakpoint *b1; |
b270e6f9 | 7026 | struct breakpoint *result = b.get (); |
c906108c | 7027 | |
346774a9 PA |
7028 | /* Add this breakpoint to the end of the chain so that a list of |
7029 | breakpoints will come out in order of increasing numbers. */ | |
7030 | ||
7031 | b1 = breakpoint_chain; | |
7032 | if (b1 == 0) | |
b270e6f9 | 7033 | breakpoint_chain = b.release (); |
346774a9 PA |
7034 | else |
7035 | { | |
7036 | while (b1->next) | |
7037 | b1 = b1->next; | |
b270e6f9 | 7038 | b1->next = b.release (); |
346774a9 | 7039 | } |
b270e6f9 TT |
7040 | |
7041 | return result; | |
346774a9 PA |
7042 | } |
7043 | ||
7044 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7045 | ||
7046 | static void | |
7047 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7048 | struct gdbarch *gdbarch, | |
28010a5d | 7049 | enum bptype bptype, |
c0a91b2b | 7050 | const struct breakpoint_ops *ops) |
346774a9 | 7051 | { |
348d480f PA |
7052 | gdb_assert (ops != NULL); |
7053 | ||
28010a5d | 7054 | b->ops = ops; |
4d28f7a8 | 7055 | b->type = bptype; |
a6d9a66e | 7056 | b->gdbarch = gdbarch; |
c906108c SS |
7057 | b->language = current_language->la_language; |
7058 | b->input_radix = input_radix; | |
d0fb5eae | 7059 | b->related_breakpoint = b; |
346774a9 PA |
7060 | } |
7061 | ||
7062 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7063 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7064 | |
7065 | static struct breakpoint * | |
7066 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7067 | enum bptype bptype, |
c0a91b2b | 7068 | const struct breakpoint_ops *ops) |
346774a9 | 7069 | { |
3b0871f4 | 7070 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7071 | |
3b0871f4 | 7072 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7073 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7074 | } |
7075 | ||
0ba852ab | 7076 | /* Initialize loc->function_name. */ |
0e30163f | 7077 | |
0d381245 | 7078 | static void |
0ba852ab | 7079 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7080 | { |
2bdf28a0 JK |
7081 | gdb_assert (loc->owner != NULL); |
7082 | ||
0d381245 | 7083 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7084 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7085 | || is_tracepoint (loc->owner)) |
0d381245 | 7086 | { |
2c02bd72 | 7087 | const char *function_name; |
0e30163f | 7088 | |
3467ec66 | 7089 | if (loc->msymbol != NULL |
f50776aa | 7090 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7091 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7092 | { |
7093 | struct breakpoint *b = loc->owner; | |
7094 | ||
c9d95fa3 | 7095 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7096 | |
7097 | if (b->type == bp_breakpoint && b->loc == loc | |
7098 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7099 | { |
7100 | /* Create only the whole new breakpoint of this type but do not | |
7101 | mess more complicated breakpoints with multiple locations. */ | |
7102 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7103 | /* Remember the resolver's address for use by the return |
7104 | breakpoint. */ | |
3467ec66 | 7105 | loc->related_address = loc->address; |
0e30163f JK |
7106 | } |
7107 | } | |
3467ec66 PA |
7108 | else |
7109 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7110 | |
2c02bd72 DE |
7111 | if (function_name) |
7112 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7113 | } |
7114 | } | |
7115 | ||
a6d9a66e | 7116 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7117 | struct gdbarch * |
a6d9a66e UW |
7118 | get_sal_arch (struct symtab_and_line sal) |
7119 | { | |
7120 | if (sal.section) | |
7121 | return get_objfile_arch (sal.section->objfile); | |
7122 | if (sal.symtab) | |
eb822aa6 | 7123 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7124 | |
7125 | return NULL; | |
7126 | } | |
7127 | ||
346774a9 PA |
7128 | /* Low level routine for partially initializing a breakpoint of type |
7129 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7130 | file name, and line number are provided by SAL. |
0d381245 VP |
7131 | |
7132 | It is expected that the caller will complete the initialization of | |
7133 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7134 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7135 | |
346774a9 PA |
7136 | static void |
7137 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7138 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7139 | const struct breakpoint_ops *ops) |
0d381245 | 7140 | { |
28010a5d | 7141 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7142 | |
3742cc8b | 7143 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7144 | |
6c95b8df PA |
7145 | if (bptype != bp_catchpoint) |
7146 | gdb_assert (sal.pspace != NULL); | |
7147 | ||
f8eba3c6 TT |
7148 | /* Store the program space that was used to set the breakpoint, |
7149 | except for ordinary breakpoints, which are independent of the | |
7150 | program space. */ | |
7151 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7152 | b->pspace = sal.pspace; | |
346774a9 | 7153 | } |
c906108c | 7154 | |
346774a9 PA |
7155 | /* set_raw_breakpoint is a low level routine for allocating and |
7156 | partially initializing a breakpoint of type BPTYPE. The newly | |
7157 | created breakpoint's address, section, source file name, and line | |
7158 | number are provided by SAL. The newly created and partially | |
7159 | initialized breakpoint is added to the breakpoint chain and | |
7160 | is also returned as the value of this function. | |
7161 | ||
7162 | It is expected that the caller will complete the initialization of | |
7163 | the newly created breakpoint struct as well as output any status | |
7164 | information regarding the creation of a new breakpoint. In | |
7165 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7166 | number! Care should be taken to not allow an error to occur | |
7167 | prior to completing the initialization of the breakpoint. If this | |
7168 | should happen, a bogus breakpoint will be left on the chain. */ | |
7169 | ||
7170 | struct breakpoint * | |
7171 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7172 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7173 | const struct breakpoint_ops *ops) |
346774a9 | 7174 | { |
3b0871f4 | 7175 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7176 | |
3b0871f4 | 7177 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7178 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7179 | } |
7180 | ||
53a5351d | 7181 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7182 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7183 | initiated the operation. */ | |
c906108c SS |
7184 | |
7185 | void | |
186c406b | 7186 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7187 | { |
35df4500 | 7188 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7189 | int thread = tp->global_num; |
0fd8e87f UW |
7190 | |
7191 | /* To avoid having to rescan all objfile symbols at every step, | |
7192 | we maintain a list of continually-inserted but always disabled | |
7193 | longjmp "master" breakpoints. Here, we simply create momentary | |
7194 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7195 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7196 | if (b->pspace == current_program_space |
186c406b TT |
7197 | && (b->type == bp_longjmp_master |
7198 | || b->type == bp_exception_master)) | |
0fd8e87f | 7199 | { |
06edf0c0 PA |
7200 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7201 | struct breakpoint *clone; | |
cc59ec59 | 7202 | |
e2e4d78b JK |
7203 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7204 | after their removal. */ | |
06edf0c0 | 7205 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7206 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7207 | clone->thread = thread; |
7208 | } | |
186c406b TT |
7209 | |
7210 | tp->initiating_frame = frame; | |
c906108c SS |
7211 | } |
7212 | ||
611c83ae | 7213 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7214 | void |
611c83ae | 7215 | delete_longjmp_breakpoint (int thread) |
c906108c | 7216 | { |
35df4500 | 7217 | struct breakpoint *b, *b_tmp; |
c906108c | 7218 | |
35df4500 | 7219 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7220 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7221 | { |
7222 | if (b->thread == thread) | |
7223 | delete_breakpoint (b); | |
7224 | } | |
c906108c SS |
7225 | } |
7226 | ||
f59f708a PA |
7227 | void |
7228 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7229 | { | |
7230 | struct breakpoint *b, *b_tmp; | |
7231 | ||
7232 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7233 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7234 | { | |
7235 | if (b->thread == thread) | |
7236 | b->disposition = disp_del_at_next_stop; | |
7237 | } | |
7238 | } | |
7239 | ||
e2e4d78b JK |
7240 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7241 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7242 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7243 | breakpoints. */ | |
7244 | ||
7245 | struct breakpoint * | |
7246 | set_longjmp_breakpoint_for_call_dummy (void) | |
7247 | { | |
7248 | struct breakpoint *b, *retval = NULL; | |
7249 | ||
7250 | ALL_BREAKPOINTS (b) | |
7251 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7252 | { | |
7253 | struct breakpoint *new_b; | |
7254 | ||
7255 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7256 | &momentary_breakpoint_ops, |
7257 | 1); | |
00431a78 | 7258 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7259 | |
7260 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7261 | ||
7262 | gdb_assert (new_b->related_breakpoint == new_b); | |
7263 | if (retval == NULL) | |
7264 | retval = new_b; | |
7265 | new_b->related_breakpoint = retval; | |
7266 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7267 | retval = retval->related_breakpoint; | |
7268 | retval->related_breakpoint = new_b; | |
7269 | } | |
7270 | ||
7271 | return retval; | |
7272 | } | |
7273 | ||
7274 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7275 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7276 | stack. |
7277 | ||
7278 | You should call this function only at places where it is safe to currently | |
7279 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7280 | frames. */ | |
7281 | ||
7282 | void | |
b67a2c6f | 7283 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7284 | { |
7285 | struct breakpoint *b, *b_tmp; | |
7286 | ||
7287 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7288 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7289 | { |
7290 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7291 | ||
7292 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7293 | dummy_b = dummy_b->related_breakpoint; | |
7294 | if (dummy_b->type != bp_call_dummy | |
7295 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7296 | continue; | |
7297 | ||
00431a78 | 7298 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7299 | |
7300 | while (b->related_breakpoint != b) | |
7301 | { | |
7302 | if (b_tmp == b->related_breakpoint) | |
7303 | b_tmp = b->related_breakpoint->next; | |
7304 | delete_breakpoint (b->related_breakpoint); | |
7305 | } | |
7306 | delete_breakpoint (b); | |
7307 | } | |
7308 | } | |
7309 | ||
1900040c MS |
7310 | void |
7311 | enable_overlay_breakpoints (void) | |
7312 | { | |
52f0bd74 | 7313 | struct breakpoint *b; |
1900040c MS |
7314 | |
7315 | ALL_BREAKPOINTS (b) | |
7316 | if (b->type == bp_overlay_event) | |
7317 | { | |
7318 | b->enable_state = bp_enabled; | |
44702360 | 7319 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7320 | overlay_events_enabled = 1; |
1900040c MS |
7321 | } |
7322 | } | |
7323 | ||
7324 | void | |
7325 | disable_overlay_breakpoints (void) | |
7326 | { | |
52f0bd74 | 7327 | struct breakpoint *b; |
1900040c MS |
7328 | |
7329 | ALL_BREAKPOINTS (b) | |
7330 | if (b->type == bp_overlay_event) | |
7331 | { | |
7332 | b->enable_state = bp_disabled; | |
44702360 | 7333 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7334 | overlay_events_enabled = 0; |
1900040c MS |
7335 | } |
7336 | } | |
7337 | ||
aa7d318d TT |
7338 | /* Set an active std::terminate breakpoint for each std::terminate |
7339 | master breakpoint. */ | |
7340 | void | |
7341 | set_std_terminate_breakpoint (void) | |
7342 | { | |
35df4500 | 7343 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7344 | |
35df4500 | 7345 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7346 | if (b->pspace == current_program_space |
7347 | && b->type == bp_std_terminate_master) | |
7348 | { | |
06edf0c0 | 7349 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7350 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7351 | } |
7352 | } | |
7353 | ||
7354 | /* Delete all the std::terminate breakpoints. */ | |
7355 | void | |
7356 | delete_std_terminate_breakpoint (void) | |
7357 | { | |
35df4500 | 7358 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7359 | |
35df4500 | 7360 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7361 | if (b->type == bp_std_terminate) |
7362 | delete_breakpoint (b); | |
7363 | } | |
7364 | ||
c4093a6a | 7365 | struct breakpoint * |
a6d9a66e | 7366 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7367 | { |
7368 | struct breakpoint *b; | |
c4093a6a | 7369 | |
06edf0c0 PA |
7370 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7371 | &internal_breakpoint_ops); | |
7372 | ||
b5de0fa7 | 7373 | b->enable_state = bp_enabled; |
f00aae0f | 7374 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7375 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7376 | |
44702360 | 7377 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7378 | |
c4093a6a JM |
7379 | return b; |
7380 | } | |
7381 | ||
0101ce28 JJ |
7382 | struct lang_and_radix |
7383 | { | |
7384 | enum language lang; | |
7385 | int radix; | |
7386 | }; | |
7387 | ||
4efc6507 DE |
7388 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7389 | ||
7390 | struct breakpoint * | |
7391 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7392 | { | |
2a7f3dff PA |
7393 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7394 | &internal_breakpoint_ops); | |
4efc6507 | 7395 | } |
0101ce28 | 7396 | |
03673fc7 PP |
7397 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7398 | ||
7399 | void | |
7400 | remove_jit_event_breakpoints (void) | |
7401 | { | |
7402 | struct breakpoint *b, *b_tmp; | |
7403 | ||
7404 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7405 | if (b->type == bp_jit_event | |
7406 | && b->loc->pspace == current_program_space) | |
7407 | delete_breakpoint (b); | |
7408 | } | |
7409 | ||
cae688ec JJ |
7410 | void |
7411 | remove_solib_event_breakpoints (void) | |
7412 | { | |
35df4500 | 7413 | struct breakpoint *b, *b_tmp; |
cae688ec | 7414 | |
35df4500 | 7415 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7416 | if (b->type == bp_shlib_event |
7417 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7418 | delete_breakpoint (b); |
7419 | } | |
7420 | ||
f37f681c PA |
7421 | /* See breakpoint.h. */ |
7422 | ||
7423 | void | |
7424 | remove_solib_event_breakpoints_at_next_stop (void) | |
7425 | { | |
7426 | struct breakpoint *b, *b_tmp; | |
7427 | ||
7428 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7429 | if (b->type == bp_shlib_event | |
7430 | && b->loc->pspace == current_program_space) | |
7431 | b->disposition = disp_del_at_next_stop; | |
7432 | } | |
7433 | ||
04086b45 PA |
7434 | /* Helper for create_solib_event_breakpoint / |
7435 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7436 | INSERT_MODE to pass through to update_global_location_list. */ | |
7437 | ||
7438 | static struct breakpoint * | |
7439 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7440 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7441 | { |
7442 | struct breakpoint *b; | |
7443 | ||
06edf0c0 PA |
7444 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7445 | &internal_breakpoint_ops); | |
04086b45 | 7446 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7447 | return b; |
7448 | } | |
7449 | ||
04086b45 PA |
7450 | struct breakpoint * |
7451 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7452 | { | |
7453 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7454 | } | |
7455 | ||
f37f681c PA |
7456 | /* See breakpoint.h. */ |
7457 | ||
7458 | struct breakpoint * | |
7459 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7460 | { | |
7461 | struct breakpoint *b; | |
7462 | ||
04086b45 PA |
7463 | /* Explicitly tell update_global_location_list to insert |
7464 | locations. */ | |
7465 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7466 | if (!b->loc->inserted) |
7467 | { | |
7468 | delete_breakpoint (b); | |
7469 | return NULL; | |
7470 | } | |
7471 | return b; | |
7472 | } | |
7473 | ||
cae688ec JJ |
7474 | /* Disable any breakpoints that are on code in shared libraries. Only |
7475 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7476 | ||
7477 | void | |
cb851954 | 7478 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7479 | { |
876fa593 | 7480 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7481 | |
876fa593 | 7482 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7483 | { |
2bdf28a0 | 7484 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7485 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7486 | |
4a64f543 MS |
7487 | /* We apply the check to all breakpoints, including disabled for |
7488 | those with loc->duplicate set. This is so that when breakpoint | |
7489 | becomes enabled, or the duplicate is removed, gdb will try to | |
7490 | insert all breakpoints. If we don't set shlib_disabled here, | |
7491 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7492 | if (((b->type == bp_breakpoint) |
508ccb1f | 7493 | || (b->type == bp_jit_event) |
1042e4c0 | 7494 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7495 | || (is_tracepoint (b))) |
6c95b8df | 7496 | && loc->pspace == current_program_space |
0d381245 | 7497 | && !loc->shlib_disabled |
6c95b8df | 7498 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7499 | ) |
0d381245 VP |
7500 | { |
7501 | loc->shlib_disabled = 1; | |
7502 | } | |
cae688ec JJ |
7503 | } |
7504 | } | |
7505 | ||
63644780 NB |
7506 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7507 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7508 | disabled ones can just stay disabled. */ | |
84acb35a | 7509 | |
75149521 | 7510 | static void |
84acb35a JJ |
7511 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7512 | { | |
876fa593 | 7513 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7514 | int disabled_shlib_breaks = 0; |
7515 | ||
876fa593 | 7516 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7517 | { |
2bdf28a0 | 7518 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7519 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7520 | |
1e4d1764 | 7521 | if (solib->pspace == loc->pspace |
e2dd7057 | 7522 | && !loc->shlib_disabled |
1e4d1764 YQ |
7523 | && (((b->type == bp_breakpoint |
7524 | || b->type == bp_jit_event | |
7525 | || b->type == bp_hardware_breakpoint) | |
7526 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7527 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7528 | || is_tracepoint (b)) | |
e2dd7057 | 7529 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7530 | { |
e2dd7057 PP |
7531 | loc->shlib_disabled = 1; |
7532 | /* At this point, we cannot rely on remove_breakpoint | |
7533 | succeeding so we must mark the breakpoint as not inserted | |
7534 | to prevent future errors occurring in remove_breakpoints. */ | |
7535 | loc->inserted = 0; | |
8d3788bd VP |
7536 | |
7537 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7538 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7539 | |
e2dd7057 PP |
7540 | if (!disabled_shlib_breaks) |
7541 | { | |
223ffa71 | 7542 | target_terminal::ours_for_output (); |
3e43a32a MS |
7543 | warning (_("Temporarily disabling breakpoints " |
7544 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7545 | solib->so_name); |
84acb35a | 7546 | } |
e2dd7057 | 7547 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7548 | } |
7549 | } | |
84acb35a JJ |
7550 | } |
7551 | ||
63644780 NB |
7552 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7553 | notification of free_objfile. Only apply to enabled breakpoints, | |
7554 | disabled ones can just stay disabled. */ | |
7555 | ||
7556 | static void | |
7557 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7558 | { | |
7559 | struct breakpoint *b; | |
7560 | ||
7561 | if (objfile == NULL) | |
7562 | return; | |
7563 | ||
d03de421 PA |
7564 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7565 | managed by the user with add-symbol-file/remove-symbol-file. | |
7566 | Similarly to how breakpoints in shared libraries are handled in | |
7567 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7568 | shlib_disabled so they end up uninserted on the next global |
7569 | location list update. Shared libraries not loaded by the user | |
7570 | aren't handled here -- they're already handled in | |
7571 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7572 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7573 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7574 | main objfile). */ | |
7575 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7576 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7577 | return; |
7578 | ||
7579 | ALL_BREAKPOINTS (b) | |
7580 | { | |
7581 | struct bp_location *loc; | |
7582 | int bp_modified = 0; | |
7583 | ||
7584 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7585 | continue; | |
7586 | ||
7587 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7588 | { | |
7589 | CORE_ADDR loc_addr = loc->address; | |
7590 | ||
7591 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7592 | && loc->loc_type != bp_loc_software_breakpoint) | |
7593 | continue; | |
7594 | ||
7595 | if (loc->shlib_disabled != 0) | |
7596 | continue; | |
7597 | ||
7598 | if (objfile->pspace != loc->pspace) | |
7599 | continue; | |
7600 | ||
7601 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7602 | && loc->loc_type != bp_loc_software_breakpoint) | |
7603 | continue; | |
7604 | ||
7605 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7606 | { | |
7607 | loc->shlib_disabled = 1; | |
08351840 PA |
7608 | /* At this point, we don't know whether the object was |
7609 | unmapped from the inferior or not, so leave the | |
7610 | inserted flag alone. We'll handle failure to | |
7611 | uninsert quietly, in case the object was indeed | |
7612 | unmapped. */ | |
63644780 NB |
7613 | |
7614 | mark_breakpoint_location_modified (loc); | |
7615 | ||
7616 | bp_modified = 1; | |
7617 | } | |
7618 | } | |
7619 | ||
7620 | if (bp_modified) | |
76727919 | 7621 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7622 | } |
7623 | } | |
7624 | ||
ce78b96d JB |
7625 | /* FORK & VFORK catchpoints. */ |
7626 | ||
e29a4733 | 7627 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7628 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7629 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7630 | |
c1fc2657 | 7631 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7632 | { |
e29a4733 PA |
7633 | /* Process id of a child process whose forking triggered this |
7634 | catchpoint. This field is only valid immediately after this | |
7635 | catchpoint has triggered. */ | |
7636 | ptid_t forked_inferior_pid; | |
7637 | }; | |
7638 | ||
4a64f543 MS |
7639 | /* Implement the "insert" breakpoint_ops method for fork |
7640 | catchpoints. */ | |
ce78b96d | 7641 | |
77b06cd7 TJB |
7642 | static int |
7643 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7644 | { |
e99b03dc | 7645 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7646 | } |
7647 | ||
4a64f543 MS |
7648 | /* Implement the "remove" breakpoint_ops method for fork |
7649 | catchpoints. */ | |
ce78b96d JB |
7650 | |
7651 | static int | |
73971819 | 7652 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7653 | { |
e99b03dc | 7654 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7655 | } |
7656 | ||
7657 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7658 | catchpoints. */ | |
7659 | ||
7660 | static int | |
f1310107 | 7661 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7662 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7663 | const struct target_waitstatus *ws) |
ce78b96d | 7664 | { |
e29a4733 PA |
7665 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7666 | ||
f90263c1 TT |
7667 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7668 | return 0; | |
7669 | ||
7670 | c->forked_inferior_pid = ws->value.related_pid; | |
7671 | return 1; | |
ce78b96d JB |
7672 | } |
7673 | ||
4a64f543 MS |
7674 | /* Implement the "print_it" breakpoint_ops method for fork |
7675 | catchpoints. */ | |
ce78b96d JB |
7676 | |
7677 | static enum print_stop_action | |
348d480f | 7678 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7679 | { |
36dfb11c | 7680 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7681 | struct breakpoint *b = bs->breakpoint_at; |
7682 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7683 | |
ce78b96d | 7684 | annotate_catchpoint (b->number); |
f303dbd6 | 7685 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7686 | if (b->disposition == disp_del) |
112e8700 | 7687 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7688 | else |
112e8700 SM |
7689 | uiout->text ("Catchpoint "); |
7690 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7691 | { |
112e8700 SM |
7692 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7693 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7694 | } |
381befee | 7695 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7696 | uiout->text (" (forked process "); |
381befee | 7697 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7698 | uiout->text ("), "); |
ce78b96d JB |
7699 | return PRINT_SRC_AND_LOC; |
7700 | } | |
7701 | ||
4a64f543 MS |
7702 | /* Implement the "print_one" breakpoint_ops method for fork |
7703 | catchpoints. */ | |
ce78b96d JB |
7704 | |
7705 | static void | |
a6d9a66e | 7706 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7707 | { |
e29a4733 | 7708 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7709 | struct value_print_options opts; |
79a45e25 | 7710 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7711 | |
7712 | get_user_print_options (&opts); | |
7713 | ||
4a64f543 MS |
7714 | /* Field 4, the address, is omitted (which makes the columns not |
7715 | line up too nicely with the headers, but the effect is relatively | |
7716 | readable). */ | |
79a45b7d | 7717 | if (opts.addressprint) |
112e8700 | 7718 | uiout->field_skip ("addr"); |
ce78b96d | 7719 | annotate_field (5); |
112e8700 | 7720 | uiout->text ("fork"); |
d7e15655 | 7721 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7722 | { |
112e8700 | 7723 | uiout->text (", process "); |
381befee | 7724 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7725 | uiout->spaces (1); |
ce78b96d | 7726 | } |
8ac3646f | 7727 | |
112e8700 SM |
7728 | if (uiout->is_mi_like_p ()) |
7729 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7730 | } |
7731 | ||
7732 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7733 | catchpoints. */ | |
7734 | ||
7735 | static void | |
7736 | print_mention_catch_fork (struct breakpoint *b) | |
7737 | { | |
7738 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7739 | } | |
7740 | ||
6149aea9 PA |
7741 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7742 | catchpoints. */ | |
7743 | ||
7744 | static void | |
7745 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7746 | { | |
7747 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7748 | print_recreate_thread (b, fp); |
6149aea9 PA |
7749 | } |
7750 | ||
ce78b96d JB |
7751 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7752 | ||
2060206e | 7753 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7754 | |
4a64f543 MS |
7755 | /* Implement the "insert" breakpoint_ops method for vfork |
7756 | catchpoints. */ | |
ce78b96d | 7757 | |
77b06cd7 TJB |
7758 | static int |
7759 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7760 | { |
e99b03dc | 7761 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7762 | } |
7763 | ||
4a64f543 MS |
7764 | /* Implement the "remove" breakpoint_ops method for vfork |
7765 | catchpoints. */ | |
ce78b96d JB |
7766 | |
7767 | static int | |
73971819 | 7768 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7769 | { |
e99b03dc | 7770 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7771 | } |
7772 | ||
7773 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7774 | catchpoints. */ | |
7775 | ||
7776 | static int | |
f1310107 | 7777 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7778 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7779 | const struct target_waitstatus *ws) |
ce78b96d | 7780 | { |
e29a4733 PA |
7781 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7782 | ||
f90263c1 TT |
7783 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7784 | return 0; | |
7785 | ||
7786 | c->forked_inferior_pid = ws->value.related_pid; | |
7787 | return 1; | |
ce78b96d JB |
7788 | } |
7789 | ||
4a64f543 MS |
7790 | /* Implement the "print_it" breakpoint_ops method for vfork |
7791 | catchpoints. */ | |
ce78b96d JB |
7792 | |
7793 | static enum print_stop_action | |
348d480f | 7794 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7795 | { |
36dfb11c | 7796 | struct ui_out *uiout = current_uiout; |
348d480f | 7797 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7798 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7799 | ||
ce78b96d | 7800 | annotate_catchpoint (b->number); |
f303dbd6 | 7801 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7802 | if (b->disposition == disp_del) |
112e8700 | 7803 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7804 | else |
112e8700 SM |
7805 | uiout->text ("Catchpoint "); |
7806 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7807 | { |
112e8700 SM |
7808 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7809 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7810 | } |
381befee | 7811 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7812 | uiout->text (" (vforked process "); |
381befee | 7813 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7814 | uiout->text ("), "); |
ce78b96d JB |
7815 | return PRINT_SRC_AND_LOC; |
7816 | } | |
7817 | ||
4a64f543 MS |
7818 | /* Implement the "print_one" breakpoint_ops method for vfork |
7819 | catchpoints. */ | |
ce78b96d JB |
7820 | |
7821 | static void | |
a6d9a66e | 7822 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7823 | { |
e29a4733 | 7824 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7825 | struct value_print_options opts; |
79a45e25 | 7826 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7827 | |
7828 | get_user_print_options (&opts); | |
4a64f543 MS |
7829 | /* Field 4, the address, is omitted (which makes the columns not |
7830 | line up too nicely with the headers, but the effect is relatively | |
7831 | readable). */ | |
79a45b7d | 7832 | if (opts.addressprint) |
112e8700 | 7833 | uiout->field_skip ("addr"); |
ce78b96d | 7834 | annotate_field (5); |
112e8700 | 7835 | uiout->text ("vfork"); |
d7e15655 | 7836 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7837 | { |
112e8700 | 7838 | uiout->text (", process "); |
381befee | 7839 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7840 | uiout->spaces (1); |
ce78b96d | 7841 | } |
8ac3646f | 7842 | |
112e8700 SM |
7843 | if (uiout->is_mi_like_p ()) |
7844 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7845 | } |
7846 | ||
7847 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7848 | catchpoints. */ | |
7849 | ||
7850 | static void | |
7851 | print_mention_catch_vfork (struct breakpoint *b) | |
7852 | { | |
7853 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7854 | } | |
7855 | ||
6149aea9 PA |
7856 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7857 | catchpoints. */ | |
7858 | ||
7859 | static void | |
7860 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7861 | { | |
7862 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7863 | print_recreate_thread (b, fp); |
6149aea9 PA |
7864 | } |
7865 | ||
ce78b96d JB |
7866 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7867 | ||
2060206e | 7868 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7869 | |
edcc5120 | 7870 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7871 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7872 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7873 | ||
c1fc2657 | 7874 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7875 | { |
c1fc2657 | 7876 | ~solib_catchpoint () override; |
edcc5120 TT |
7877 | |
7878 | /* True for "catch load", false for "catch unload". */ | |
7879 | unsigned char is_load; | |
7880 | ||
7881 | /* Regular expression to match, if any. COMPILED is only valid when | |
7882 | REGEX is non-NULL. */ | |
7883 | char *regex; | |
2d7cc5c7 | 7884 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7885 | }; |
7886 | ||
c1fc2657 | 7887 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7888 | { |
c1fc2657 | 7889 | xfree (this->regex); |
edcc5120 TT |
7890 | } |
7891 | ||
7892 | static int | |
7893 | insert_catch_solib (struct bp_location *ignore) | |
7894 | { | |
7895 | return 0; | |
7896 | } | |
7897 | ||
7898 | static int | |
73971819 | 7899 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7900 | { |
7901 | return 0; | |
7902 | } | |
7903 | ||
7904 | static int | |
7905 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7906 | const address_space *aspace, |
edcc5120 TT |
7907 | CORE_ADDR bp_addr, |
7908 | const struct target_waitstatus *ws) | |
7909 | { | |
7910 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7911 | struct breakpoint *other; | |
7912 | ||
7913 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7914 | return 1; | |
7915 | ||
7916 | ALL_BREAKPOINTS (other) | |
7917 | { | |
7918 | struct bp_location *other_bl; | |
7919 | ||
7920 | if (other == bl->owner) | |
7921 | continue; | |
7922 | ||
7923 | if (other->type != bp_shlib_event) | |
7924 | continue; | |
7925 | ||
c1fc2657 | 7926 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7927 | continue; |
7928 | ||
7929 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7930 | { | |
7931 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7932 | return 1; | |
7933 | } | |
7934 | } | |
7935 | ||
7936 | return 0; | |
7937 | } | |
7938 | ||
7939 | static void | |
7940 | check_status_catch_solib (struct bpstats *bs) | |
7941 | { | |
7942 | struct solib_catchpoint *self | |
7943 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7944 | |
7945 | if (self->is_load) | |
7946 | { | |
52941706 | 7947 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7948 | { |
7949 | if (!self->regex | |
2d7cc5c7 | 7950 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7951 | return; |
7952 | } | |
7953 | } | |
7954 | else | |
7955 | { | |
6fb16ce6 | 7956 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7957 | { |
7958 | if (!self->regex | |
6fb16ce6 | 7959 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7960 | return; |
7961 | } | |
7962 | } | |
7963 | ||
7964 | bs->stop = 0; | |
7965 | bs->print_it = print_it_noop; | |
7966 | } | |
7967 | ||
7968 | static enum print_stop_action | |
7969 | print_it_catch_solib (bpstat bs) | |
7970 | { | |
7971 | struct breakpoint *b = bs->breakpoint_at; | |
7972 | struct ui_out *uiout = current_uiout; | |
7973 | ||
7974 | annotate_catchpoint (b->number); | |
f303dbd6 | 7975 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 7976 | if (b->disposition == disp_del) |
112e8700 | 7977 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 7978 | else |
112e8700 | 7979 | uiout->text ("Catchpoint "); |
381befee | 7980 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
7981 | uiout->text ("\n"); |
7982 | if (uiout->is_mi_like_p ()) | |
7983 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
7984 | print_solib_event (1); |
7985 | return PRINT_SRC_AND_LOC; | |
7986 | } | |
7987 | ||
7988 | static void | |
7989 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7990 | { | |
7991 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7992 | struct value_print_options opts; | |
7993 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
7994 | |
7995 | get_user_print_options (&opts); | |
7996 | /* Field 4, the address, is omitted (which makes the columns not | |
7997 | line up too nicely with the headers, but the effect is relatively | |
7998 | readable). */ | |
7999 | if (opts.addressprint) | |
8000 | { | |
8001 | annotate_field (4); | |
112e8700 | 8002 | uiout->field_skip ("addr"); |
edcc5120 TT |
8003 | } |
8004 | ||
528e1572 | 8005 | std::string msg; |
edcc5120 TT |
8006 | annotate_field (5); |
8007 | if (self->is_load) | |
8008 | { | |
8009 | if (self->regex) | |
528e1572 | 8010 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8011 | else |
528e1572 | 8012 | msg = _("load of library"); |
edcc5120 TT |
8013 | } |
8014 | else | |
8015 | { | |
8016 | if (self->regex) | |
528e1572 | 8017 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8018 | else |
528e1572 | 8019 | msg = _("unload of library"); |
edcc5120 | 8020 | } |
112e8700 | 8021 | uiout->field_string ("what", msg); |
8ac3646f | 8022 | |
112e8700 SM |
8023 | if (uiout->is_mi_like_p ()) |
8024 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8025 | } |
8026 | ||
8027 | static void | |
8028 | print_mention_catch_solib (struct breakpoint *b) | |
8029 | { | |
8030 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8031 | ||
8032 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8033 | self->is_load ? "load" : "unload"); | |
8034 | } | |
8035 | ||
8036 | static void | |
8037 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8038 | { | |
8039 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8040 | ||
8041 | fprintf_unfiltered (fp, "%s %s", | |
8042 | b->disposition == disp_del ? "tcatch" : "catch", | |
8043 | self->is_load ? "load" : "unload"); | |
8044 | if (self->regex) | |
8045 | fprintf_unfiltered (fp, " %s", self->regex); | |
8046 | fprintf_unfiltered (fp, "\n"); | |
8047 | } | |
8048 | ||
8049 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8050 | ||
91985142 MG |
8051 | /* Shared helper function (MI and CLI) for creating and installing |
8052 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8053 | the events to be caught are load events, otherwise they are | |
8054 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8055 | temporary one. If ENABLED is non-zero the catchpoint is | |
8056 | created in an enabled state. */ | |
edcc5120 | 8057 | |
91985142 | 8058 | void |
a121b7c1 | 8059 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8060 | { |
edcc5120 | 8061 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8062 | |
edcc5120 TT |
8063 | if (!arg) |
8064 | arg = ""; | |
f1735a53 | 8065 | arg = skip_spaces (arg); |
edcc5120 | 8066 | |
36bd8eaa | 8067 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8068 | |
8069 | if (*arg != '\0') | |
8070 | { | |
2d7cc5c7 PA |
8071 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8072 | _("Invalid regexp"))); | |
edcc5120 TT |
8073 | c->regex = xstrdup (arg); |
8074 | } | |
8075 | ||
8076 | c->is_load = is_load; | |
36bd8eaa | 8077 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8078 | &catch_solib_breakpoint_ops); |
8079 | ||
c1fc2657 | 8080 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8081 | |
b270e6f9 | 8082 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8083 | } |
8084 | ||
91985142 MG |
8085 | /* A helper function that does all the work for "catch load" and |
8086 | "catch unload". */ | |
8087 | ||
8088 | static void | |
eb4c3f4a | 8089 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8090 | struct cmd_list_element *command) |
8091 | { | |
8092 | int tempflag; | |
8093 | const int enabled = 1; | |
8094 | ||
8095 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8096 | ||
8097 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8098 | } | |
8099 | ||
edcc5120 | 8100 | static void |
eb4c3f4a | 8101 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8102 | struct cmd_list_element *command) |
8103 | { | |
8104 | catch_load_or_unload (arg, from_tty, 1, command); | |
8105 | } | |
8106 | ||
8107 | static void | |
eb4c3f4a | 8108 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8109 | struct cmd_list_element *command) |
8110 | { | |
8111 | catch_load_or_unload (arg, from_tty, 0, command); | |
8112 | } | |
8113 | ||
346774a9 PA |
8114 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8115 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8116 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8117 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8118 | |
ab04a2af | 8119 | void |
346774a9 PA |
8120 | init_catchpoint (struct breakpoint *b, |
8121 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8122 | const char *cond_string, |
c0a91b2b | 8123 | const struct breakpoint_ops *ops) |
c906108c | 8124 | { |
51abb421 | 8125 | symtab_and_line sal; |
6c95b8df | 8126 | sal.pspace = current_program_space; |
c5aa993b | 8127 | |
28010a5d | 8128 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8129 | |
1b36a34b | 8130 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8131 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8132 | } |
8133 | ||
28010a5d | 8134 | void |
b270e6f9 | 8135 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8136 | { |
b270e6f9 | 8137 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8138 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8139 | if (is_tracepoint (b)) |
8140 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8141 | if (!internal) |
8142 | mention (b); | |
76727919 | 8143 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8144 | |
8145 | if (update_gll) | |
44702360 | 8146 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8147 | } |
8148 | ||
9b70b993 | 8149 | static void |
a6d9a66e | 8150 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8151 | int tempflag, const char *cond_string, |
c0a91b2b | 8152 | const struct breakpoint_ops *ops) |
c906108c | 8153 | { |
b270e6f9 | 8154 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8155 | |
b270e6f9 | 8156 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8157 | |
8158 | c->forked_inferior_pid = null_ptid; | |
8159 | ||
b270e6f9 | 8160 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8161 | } |
8162 | ||
fe798b75 JB |
8163 | /* Exec catchpoints. */ |
8164 | ||
b4d90040 | 8165 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8166 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8167 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8168 | ||
c1fc2657 | 8169 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8170 | { |
c1fc2657 | 8171 | ~exec_catchpoint () override; |
b4d90040 PA |
8172 | |
8173 | /* Filename of a program whose exec triggered this catchpoint. | |
8174 | This field is only valid immediately after this catchpoint has | |
8175 | triggered. */ | |
8176 | char *exec_pathname; | |
8177 | }; | |
8178 | ||
c1fc2657 | 8179 | /* Exec catchpoint destructor. */ |
b4d90040 | 8180 | |
c1fc2657 | 8181 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8182 | { |
c1fc2657 | 8183 | xfree (this->exec_pathname); |
b4d90040 PA |
8184 | } |
8185 | ||
77b06cd7 TJB |
8186 | static int |
8187 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8188 | { |
e99b03dc | 8189 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8190 | } |
c906108c | 8191 | |
fe798b75 | 8192 | static int |
73971819 | 8193 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8194 | { |
e99b03dc | 8195 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8196 | } |
c906108c | 8197 | |
fe798b75 | 8198 | static int |
f1310107 | 8199 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8200 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8201 | const struct target_waitstatus *ws) |
fe798b75 | 8202 | { |
b4d90040 PA |
8203 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8204 | ||
f90263c1 TT |
8205 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8206 | return 0; | |
8207 | ||
8208 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8209 | return 1; | |
fe798b75 | 8210 | } |
c906108c | 8211 | |
fe798b75 | 8212 | static enum print_stop_action |
348d480f | 8213 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8214 | { |
36dfb11c | 8215 | struct ui_out *uiout = current_uiout; |
348d480f | 8216 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8217 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8218 | ||
fe798b75 | 8219 | annotate_catchpoint (b->number); |
f303dbd6 | 8220 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8221 | if (b->disposition == disp_del) |
112e8700 | 8222 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8223 | else |
112e8700 SM |
8224 | uiout->text ("Catchpoint "); |
8225 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8226 | { |
112e8700 SM |
8227 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8228 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8229 | } |
381befee | 8230 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8231 | uiout->text (" (exec'd "); |
8232 | uiout->field_string ("new-exec", c->exec_pathname); | |
8233 | uiout->text ("), "); | |
36dfb11c | 8234 | |
fe798b75 | 8235 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8236 | } |
8237 | ||
fe798b75 | 8238 | static void |
a6d9a66e | 8239 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8240 | { |
b4d90040 | 8241 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8242 | struct value_print_options opts; |
79a45e25 | 8243 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8244 | |
8245 | get_user_print_options (&opts); | |
8246 | ||
8247 | /* Field 4, the address, is omitted (which makes the columns | |
8248 | not line up too nicely with the headers, but the effect | |
8249 | is relatively readable). */ | |
8250 | if (opts.addressprint) | |
112e8700 | 8251 | uiout->field_skip ("addr"); |
fe798b75 | 8252 | annotate_field (5); |
112e8700 | 8253 | uiout->text ("exec"); |
b4d90040 | 8254 | if (c->exec_pathname != NULL) |
fe798b75 | 8255 | { |
112e8700 SM |
8256 | uiout->text (", program \""); |
8257 | uiout->field_string ("what", c->exec_pathname); | |
8258 | uiout->text ("\" "); | |
fe798b75 | 8259 | } |
8ac3646f | 8260 | |
112e8700 SM |
8261 | if (uiout->is_mi_like_p ()) |
8262 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8263 | } |
8264 | ||
8265 | static void | |
8266 | print_mention_catch_exec (struct breakpoint *b) | |
8267 | { | |
8268 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8269 | } | |
8270 | ||
6149aea9 PA |
8271 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8272 | catchpoints. */ | |
8273 | ||
8274 | static void | |
8275 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8276 | { | |
8277 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8278 | print_recreate_thread (b, fp); |
6149aea9 PA |
8279 | } |
8280 | ||
2060206e | 8281 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8282 | |
c906108c | 8283 | static int |
fba45db2 | 8284 | hw_breakpoint_used_count (void) |
c906108c | 8285 | { |
c906108c | 8286 | int i = 0; |
f1310107 TJB |
8287 | struct breakpoint *b; |
8288 | struct bp_location *bl; | |
c906108c SS |
8289 | |
8290 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8291 | { |
d6b74ac4 | 8292 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8293 | for (bl = b->loc; bl; bl = bl->next) |
8294 | { | |
8295 | /* Special types of hardware breakpoints may use more than | |
8296 | one register. */ | |
348d480f | 8297 | i += b->ops->resources_needed (bl); |
f1310107 | 8298 | } |
c5aa993b | 8299 | } |
c906108c SS |
8300 | |
8301 | return i; | |
8302 | } | |
8303 | ||
a1398e0c PA |
8304 | /* Returns the resources B would use if it were a hardware |
8305 | watchpoint. */ | |
8306 | ||
c906108c | 8307 | static int |
a1398e0c | 8308 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8309 | { |
c906108c | 8310 | int i = 0; |
e09342b5 | 8311 | struct bp_location *bl; |
c906108c | 8312 | |
a1398e0c PA |
8313 | if (!breakpoint_enabled (b)) |
8314 | return 0; | |
8315 | ||
8316 | for (bl = b->loc; bl; bl = bl->next) | |
8317 | { | |
8318 | /* Special types of hardware watchpoints may use more than | |
8319 | one register. */ | |
8320 | i += b->ops->resources_needed (bl); | |
8321 | } | |
8322 | ||
8323 | return i; | |
8324 | } | |
8325 | ||
8326 | /* Returns the sum the used resources of all hardware watchpoints of | |
8327 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8328 | the sum of the used resources of all hardware watchpoints of other | |
8329 | types _not_ TYPE. */ | |
8330 | ||
8331 | static int | |
8332 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8333 | enum bptype type, int *other_type_used) | |
8334 | { | |
8335 | int i = 0; | |
8336 | struct breakpoint *b; | |
8337 | ||
c906108c SS |
8338 | *other_type_used = 0; |
8339 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8340 | { |
a1398e0c PA |
8341 | if (b == except) |
8342 | continue; | |
e09342b5 TJB |
8343 | if (!breakpoint_enabled (b)) |
8344 | continue; | |
8345 | ||
a1398e0c PA |
8346 | if (b->type == type) |
8347 | i += hw_watchpoint_use_count (b); | |
8348 | else if (is_hardware_watchpoint (b)) | |
8349 | *other_type_used = 1; | |
e09342b5 TJB |
8350 | } |
8351 | ||
c906108c SS |
8352 | return i; |
8353 | } | |
8354 | ||
c906108c | 8355 | void |
fba45db2 | 8356 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8357 | { |
c5aa993b | 8358 | struct breakpoint *b; |
c906108c SS |
8359 | |
8360 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8361 | { |
cc60f2e3 | 8362 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8363 | { |
b5de0fa7 | 8364 | b->enable_state = bp_call_disabled; |
44702360 | 8365 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8366 | } |
8367 | } | |
c906108c SS |
8368 | } |
8369 | ||
8370 | void | |
fba45db2 | 8371 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8372 | { |
c5aa993b | 8373 | struct breakpoint *b; |
c906108c SS |
8374 | |
8375 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8376 | { |
cc60f2e3 | 8377 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8378 | { |
b5de0fa7 | 8379 | b->enable_state = bp_enabled; |
44702360 | 8380 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8381 | } |
8382 | } | |
c906108c SS |
8383 | } |
8384 | ||
8bea4e01 UW |
8385 | void |
8386 | disable_breakpoints_before_startup (void) | |
8387 | { | |
6c95b8df | 8388 | current_program_space->executing_startup = 1; |
44702360 | 8389 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8390 | } |
8391 | ||
8392 | void | |
8393 | enable_breakpoints_after_startup (void) | |
8394 | { | |
6c95b8df | 8395 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8396 | breakpoint_re_set (); |
8bea4e01 UW |
8397 | } |
8398 | ||
7c16b83e PA |
8399 | /* Create a new single-step breakpoint for thread THREAD, with no |
8400 | locations. */ | |
c906108c | 8401 | |
7c16b83e PA |
8402 | static struct breakpoint * |
8403 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8404 | { | |
b270e6f9 | 8405 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8406 | |
b270e6f9 | 8407 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8408 | &momentary_breakpoint_ops); |
8409 | ||
8410 | b->disposition = disp_donttouch; | |
8411 | b->frame_id = null_frame_id; | |
8412 | ||
8413 | b->thread = thread; | |
8414 | gdb_assert (b->thread != 0); | |
8415 | ||
b270e6f9 | 8416 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8417 | } |
8418 | ||
8419 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8420 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8421 | frame. */ | |
c906108c | 8422 | |
454dafbd | 8423 | breakpoint_up |
a6d9a66e UW |
8424 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8425 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8426 | { |
52f0bd74 | 8427 | struct breakpoint *b; |
edb3359d | 8428 | |
193facb3 JK |
8429 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8430 | tail-called one. */ | |
8431 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8432 | |
06edf0c0 | 8433 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8434 | b->enable_state = bp_enabled; |
8435 | b->disposition = disp_donttouch; | |
818dd999 | 8436 | b->frame_id = frame_id; |
c906108c | 8437 | |
00431a78 | 8438 | b->thread = inferior_thread ()->global_num; |
c906108c | 8439 | |
44702360 | 8440 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8441 | |
454dafbd | 8442 | return breakpoint_up (b); |
c906108c | 8443 | } |
611c83ae | 8444 | |
06edf0c0 | 8445 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8446 | The new breakpoint will have type TYPE, use OPS as its |
8447 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8448 | |
06edf0c0 PA |
8449 | static struct breakpoint * |
8450 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8451 | enum bptype type, | |
a1aa2221 LM |
8452 | const struct breakpoint_ops *ops, |
8453 | int loc_enabled) | |
e58b0e63 PA |
8454 | { |
8455 | struct breakpoint *copy; | |
8456 | ||
06edf0c0 | 8457 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8458 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8459 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8460 | |
a6d9a66e | 8461 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8462 | copy->loc->requested_address = orig->loc->requested_address; |
8463 | copy->loc->address = orig->loc->address; | |
8464 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8465 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8466 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8467 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8468 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8469 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8470 | copy->frame_id = orig->frame_id; |
8471 | copy->thread = orig->thread; | |
6c95b8df | 8472 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8473 | |
8474 | copy->enable_state = bp_enabled; | |
8475 | copy->disposition = disp_donttouch; | |
8476 | copy->number = internal_breakpoint_number--; | |
8477 | ||
44702360 | 8478 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8479 | return copy; |
8480 | } | |
8481 | ||
06edf0c0 PA |
8482 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8483 | ORIG is NULL. */ | |
8484 | ||
8485 | struct breakpoint * | |
8486 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8487 | { | |
8488 | /* If there's nothing to clone, then return nothing. */ | |
8489 | if (orig == NULL) | |
8490 | return NULL; | |
8491 | ||
a1aa2221 | 8492 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8493 | } |
8494 | ||
454dafbd | 8495 | breakpoint_up |
a6d9a66e UW |
8496 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8497 | enum bptype type) | |
611c83ae PA |
8498 | { |
8499 | struct symtab_and_line sal; | |
8500 | ||
8501 | sal = find_pc_line (pc, 0); | |
8502 | sal.pc = pc; | |
8503 | sal.section = find_pc_overlay (pc); | |
8504 | sal.explicit_pc = 1; | |
8505 | ||
a6d9a66e | 8506 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8507 | } |
c906108c | 8508 | \f |
c5aa993b | 8509 | |
c906108c SS |
8510 | /* Tell the user we have just set a breakpoint B. */ |
8511 | ||
8512 | static void | |
fba45db2 | 8513 | mention (struct breakpoint *b) |
c906108c | 8514 | { |
348d480f | 8515 | b->ops->print_mention (b); |
5922befa LM |
8516 | if (current_uiout->is_mi_like_p ()) |
8517 | return; | |
8518 | printf_filtered ("\n"); | |
c906108c | 8519 | } |
c906108c | 8520 | \f |
c5aa993b | 8521 | |
1a853c52 PA |
8522 | static int bp_loc_is_permanent (struct bp_location *loc); |
8523 | ||
0d381245 | 8524 | static struct bp_location * |
39d61571 | 8525 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8526 | const struct symtab_and_line *sal) |
8527 | { | |
8528 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8529 | CORE_ADDR adjusted_address; |
8530 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8531 | ||
8532 | if (loc_gdbarch == NULL) | |
8533 | loc_gdbarch = b->gdbarch; | |
8534 | ||
8535 | /* Adjust the breakpoint's address prior to allocating a location. | |
8536 | Once we call allocate_bp_location(), that mostly uninitialized | |
8537 | location will be placed on the location chain. Adjustment of the | |
8538 | breakpoint may cause target_read_memory() to be called and we do | |
8539 | not want its scan of the location chain to find a breakpoint and | |
8540 | location that's only been partially initialized. */ | |
8541 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8542 | sal->pc, b->type); | |
0d381245 | 8543 | |
d30113d4 | 8544 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8545 | loc = allocate_bp_location (b); |
d30113d4 JK |
8546 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8547 | tmp = &((*tmp)->next)) | |
0d381245 | 8548 | ; |
d30113d4 | 8549 | loc->next = *tmp; |
0d381245 | 8550 | *tmp = loc; |
3742cc8b | 8551 | |
0d381245 | 8552 | loc->requested_address = sal->pc; |
3742cc8b | 8553 | loc->address = adjusted_address; |
6c95b8df | 8554 | loc->pspace = sal->pspace; |
935676c9 | 8555 | loc->probe.prob = sal->prob; |
729662a5 | 8556 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8557 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8558 | loc->section = sal->section; |
3742cc8b | 8559 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8560 | loc->line_number = sal->line; |
2f202fde | 8561 | loc->symtab = sal->symtab; |
4a27f119 | 8562 | loc->symbol = sal->symbol; |
3467ec66 PA |
8563 | loc->msymbol = sal->msymbol; |
8564 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8565 | |
0ba852ab | 8566 | set_breakpoint_location_function (loc); |
1a853c52 | 8567 | |
6ae88661 LM |
8568 | /* While by definition, permanent breakpoints are already present in the |
8569 | code, we don't mark the location as inserted. Normally one would expect | |
8570 | that GDB could rely on that breakpoint instruction to stop the program, | |
8571 | thus removing the need to insert its own breakpoint, except that executing | |
8572 | the breakpoint instruction can kill the target instead of reporting a | |
8573 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8574 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8575 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8576 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8577 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8578 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8579 | it manually increments the PC, thus avoiding executing the breakpoint | |
8580 | instruction.) */ | |
1a853c52 | 8581 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8582 | loc->permanent = 1; |
1a853c52 | 8583 | |
0d381245 VP |
8584 | return loc; |
8585 | } | |
514f746b AR |
8586 | \f |
8587 | ||
1cf4d951 | 8588 | /* See breakpoint.h. */ |
514f746b | 8589 | |
1cf4d951 PA |
8590 | int |
8591 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8592 | { |
8593 | int len; | |
8594 | CORE_ADDR addr; | |
1afeeb75 | 8595 | const gdb_byte *bpoint; |
514f746b AR |
8596 | gdb_byte *target_mem; |
8597 | ||
1cf4d951 PA |
8598 | addr = address; |
8599 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8600 | ||
8601 | /* Software breakpoints unsupported? */ | |
8602 | if (bpoint == NULL) | |
8603 | return 0; | |
8604 | ||
224c3ddb | 8605 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8606 | |
8607 | /* Enable the automatic memory restoration from breakpoints while | |
8608 | we read the memory. Otherwise we could say about our temporary | |
8609 | breakpoints they are permanent. */ | |
cb85b21b TT |
8610 | scoped_restore restore_memory |
8611 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8612 | |
8613 | if (target_read_memory (address, target_mem, len) == 0 | |
8614 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8615 | return 1; |
1cf4d951 | 8616 | |
cb85b21b | 8617 | return 0; |
1cf4d951 PA |
8618 | } |
8619 | ||
8620 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8621 | return 0 otherwise. */ | |
8622 | ||
8623 | static int | |
8624 | bp_loc_is_permanent (struct bp_location *loc) | |
8625 | { | |
514f746b AR |
8626 | gdb_assert (loc != NULL); |
8627 | ||
cb1e4e32 PA |
8628 | /* If we have a non-breakpoint-backed catchpoint or a software |
8629 | watchpoint, just return 0. We should not attempt to read from | |
8630 | the addresses the locations of these breakpoint types point to. | |
8631 | program_breakpoint_here_p, below, will attempt to read | |
244558af | 8632 | memory. */ |
cb1e4e32 | 8633 | if (!bl_address_is_meaningful (loc)) |
244558af LM |
8634 | return 0; |
8635 | ||
5ed8105e | 8636 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8637 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8638 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8639 | } |
8640 | ||
e7e0cddf SS |
8641 | /* Build a command list for the dprintf corresponding to the current |
8642 | settings of the dprintf style options. */ | |
8643 | ||
8644 | static void | |
8645 | update_dprintf_command_list (struct breakpoint *b) | |
8646 | { | |
8647 | char *dprintf_args = b->extra_string; | |
8648 | char *printf_line = NULL; | |
8649 | ||
8650 | if (!dprintf_args) | |
8651 | return; | |
8652 | ||
8653 | dprintf_args = skip_spaces (dprintf_args); | |
8654 | ||
8655 | /* Allow a comma, as it may have terminated a location, but don't | |
8656 | insist on it. */ | |
8657 | if (*dprintf_args == ',') | |
8658 | ++dprintf_args; | |
8659 | dprintf_args = skip_spaces (dprintf_args); | |
8660 | ||
8661 | if (*dprintf_args != '"') | |
8662 | error (_("Bad format string, missing '\"'.")); | |
8663 | ||
d3ce09f5 | 8664 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8665 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8666 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8667 | { |
8668 | if (!dprintf_function) | |
8669 | error (_("No function supplied for dprintf call")); | |
8670 | ||
8671 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8672 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8673 | dprintf_function, | |
8674 | dprintf_channel, | |
8675 | dprintf_args); | |
8676 | else | |
8677 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8678 | dprintf_function, | |
8679 | dprintf_args); | |
8680 | } | |
d3ce09f5 SS |
8681 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8682 | { | |
8683 | if (target_can_run_breakpoint_commands ()) | |
8684 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8685 | else | |
8686 | { | |
8687 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8688 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8689 | } | |
8690 | } | |
e7e0cddf SS |
8691 | else |
8692 | internal_error (__FILE__, __LINE__, | |
8693 | _("Invalid dprintf style.")); | |
8694 | ||
f28045c2 | 8695 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8696 | |
12973681 TT |
8697 | /* Manufacture a printf sequence. */ |
8698 | struct command_line *printf_cmd_line | |
8699 | = new struct command_line (simple_control, printf_line); | |
8700 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8701 | command_lines_deleter ())); | |
e7e0cddf SS |
8702 | } |
8703 | ||
8704 | /* Update all dprintf commands, making their command lists reflect | |
8705 | current style settings. */ | |
8706 | ||
8707 | static void | |
eb4c3f4a | 8708 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8709 | struct cmd_list_element *c) |
8710 | { | |
8711 | struct breakpoint *b; | |
8712 | ||
8713 | ALL_BREAKPOINTS (b) | |
8714 | { | |
8715 | if (b->type == bp_dprintf) | |
8716 | update_dprintf_command_list (b); | |
8717 | } | |
8718 | } | |
c3f6f71d | 8719 | |
f00aae0f KS |
8720 | /* Create a breakpoint with SAL as location. Use LOCATION |
8721 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8722 | as condition expression. If LOCATION is NULL then create an |
8723 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8724 | |
8725 | static void | |
d9b3f62e | 8726 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8727 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8728 | event_location_up &&location, |
e1e01040 PA |
8729 | gdb::unique_xmalloc_ptr<char> filter, |
8730 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8731 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8732 | enum bptype type, enum bpdisp disposition, |
8733 | int thread, int task, int ignore_count, | |
c0a91b2b | 8734 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8735 | int enabled, int internal, unsigned flags, |
8736 | int display_canonical) | |
018d34a4 | 8737 | { |
0d381245 | 8738 | int i; |
018d34a4 VP |
8739 | |
8740 | if (type == bp_hardware_breakpoint) | |
8741 | { | |
fbbd034e AS |
8742 | int target_resources_ok; |
8743 | ||
8744 | i = hw_breakpoint_used_count (); | |
8745 | target_resources_ok = | |
8746 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8747 | i + 1, 0); |
8748 | if (target_resources_ok == 0) | |
8749 | error (_("No hardware breakpoint support in the target.")); | |
8750 | else if (target_resources_ok < 0) | |
8751 | error (_("Hardware breakpoints used exceeds limit.")); | |
8752 | } | |
8753 | ||
6c5b2ebe | 8754 | gdb_assert (!sals.empty ()); |
6c95b8df | 8755 | |
6c5b2ebe | 8756 | for (const auto &sal : sals) |
0d381245 | 8757 | { |
0d381245 VP |
8758 | struct bp_location *loc; |
8759 | ||
8760 | if (from_tty) | |
5af949e3 UW |
8761 | { |
8762 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8763 | if (!loc_gdbarch) | |
8764 | loc_gdbarch = gdbarch; | |
8765 | ||
8766 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8767 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8768 | } |
0d381245 | 8769 | |
6c5b2ebe | 8770 | if (&sal == &sals[0]) |
0d381245 | 8771 | { |
d9b3f62e | 8772 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8773 | b->thread = thread; |
4a306c9a | 8774 | b->task = task; |
855a6e68 | 8775 | |
e1e01040 PA |
8776 | b->cond_string = cond_string.release (); |
8777 | b->extra_string = extra_string.release (); | |
0d381245 | 8778 | b->ignore_count = ignore_count; |
41447f92 | 8779 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8780 | b->disposition = disposition; |
6c95b8df | 8781 | |
44f238bb PA |
8782 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8783 | b->loc->inserted = 1; | |
8784 | ||
0fb4aa4b PA |
8785 | if (type == bp_static_tracepoint) |
8786 | { | |
d9b3f62e | 8787 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8788 | struct static_tracepoint_marker marker; |
8789 | ||
983af33b | 8790 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8791 | { |
8792 | /* We already know the marker exists, otherwise, we | |
8793 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8794 | const char *p |
8795 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8796 | const char *endp; |
0fb4aa4b | 8797 | |
f1735a53 | 8798 | p = skip_spaces (p); |
0fb4aa4b | 8799 | |
f1735a53 | 8800 | endp = skip_to_space (p); |
0fb4aa4b | 8801 | |
5d9310c4 | 8802 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8803 | |
3e43a32a MS |
8804 | printf_filtered (_("Probed static tracepoint " |
8805 | "marker \"%s\"\n"), | |
5d9310c4 | 8806 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8807 | } |
8808 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8809 | { | |
5d9310c4 | 8810 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8811 | |
3e43a32a MS |
8812 | printf_filtered (_("Probed static tracepoint " |
8813 | "marker \"%s\"\n"), | |
5d9310c4 | 8814 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8815 | } |
8816 | else | |
3e43a32a MS |
8817 | warning (_("Couldn't determine the static " |
8818 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8819 | } |
8820 | ||
0d381245 VP |
8821 | loc = b->loc; |
8822 | } | |
8823 | else | |
018d34a4 | 8824 | { |
39d61571 | 8825 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8826 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8827 | loc->inserted = 1; | |
0d381245 VP |
8828 | } |
8829 | ||
8830 | if (b->cond_string) | |
8831 | { | |
bbc13ae3 KS |
8832 | const char *arg = b->cond_string; |
8833 | ||
1bb9788d TT |
8834 | loc->cond = parse_exp_1 (&arg, loc->address, |
8835 | block_for_pc (loc->address), 0); | |
0d381245 | 8836 | if (*arg) |
588ae58c | 8837 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8838 | } |
e7e0cddf SS |
8839 | |
8840 | /* Dynamic printf requires and uses additional arguments on the | |
8841 | command line, otherwise it's an error. */ | |
8842 | if (type == bp_dprintf) | |
8843 | { | |
8844 | if (b->extra_string) | |
8845 | update_dprintf_command_list (b); | |
8846 | else | |
8847 | error (_("Format string required")); | |
8848 | } | |
8849 | else if (b->extra_string) | |
588ae58c | 8850 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8851 | } |
018d34a4 | 8852 | |
56435ebe | 8853 | b->display_canonical = display_canonical; |
f00aae0f | 8854 | if (location != NULL) |
d28cd78a | 8855 | b->location = std::move (location); |
018d34a4 | 8856 | else |
d28cd78a | 8857 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8858 | b->filter = std::move (filter); |
d9b3f62e | 8859 | } |
018d34a4 | 8860 | |
d9b3f62e PA |
8861 | static void |
8862 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8863 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8864 | event_location_up &&location, |
e1e01040 PA |
8865 | gdb::unique_xmalloc_ptr<char> filter, |
8866 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8867 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8868 | enum bptype type, enum bpdisp disposition, |
8869 | int thread, int task, int ignore_count, | |
c0a91b2b | 8870 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8871 | int enabled, int internal, unsigned flags, |
8872 | int display_canonical) | |
d9b3f62e | 8873 | { |
a5e364af | 8874 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8875 | |
a5e364af | 8876 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8877 | sals, std::move (location), |
e1e01040 PA |
8878 | std::move (filter), |
8879 | std::move (cond_string), | |
8880 | std::move (extra_string), | |
d9b3f62e PA |
8881 | type, disposition, |
8882 | thread, task, ignore_count, | |
8883 | ops, from_tty, | |
44f238bb PA |
8884 | enabled, internal, flags, |
8885 | display_canonical); | |
d9b3f62e | 8886 | |
b270e6f9 | 8887 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8888 | } |
8889 | ||
8890 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8891 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8892 | value. COND_STRING, if not NULL, specified the condition to be | |
8893 | used for all breakpoints. Essentially the only case where | |
8894 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8895 | function. In that case, it's still not possible to specify | |
8896 | separate conditions for different overloaded functions, so | |
8897 | we take just a single condition string. | |
8898 | ||
c3f6f71d | 8899 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8900 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8901 | array contents). If the function fails (error() is called), the |
8902 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8903 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8904 | |
8905 | static void | |
8cdf0e15 | 8906 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8907 | struct linespec_result *canonical, |
e1e01040 PA |
8908 | gdb::unique_xmalloc_ptr<char> cond_string, |
8909 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8910 | enum bptype type, enum bpdisp disposition, |
8911 | int thread, int task, int ignore_count, | |
c0a91b2b | 8912 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8913 | int enabled, int internal, unsigned flags) |
c906108c | 8914 | { |
f8eba3c6 | 8915 | if (canonical->pre_expanded) |
6c5b2ebe | 8916 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8917 | |
6c5b2ebe | 8918 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8919 | { |
f00aae0f | 8920 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8921 | 'break', without arguments. */ |
ffc2605c | 8922 | event_location_up location |
f00aae0f | 8923 | = (canonical->location != NULL |
8e9e35b1 | 8924 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8925 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8926 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8927 | |
6c5b2ebe | 8928 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8929 | std::move (location), |
e1e01040 PA |
8930 | std::move (filter_string), |
8931 | std::move (cond_string), | |
8932 | std::move (extra_string), | |
e7e0cddf | 8933 | type, disposition, |
84f4c1fe | 8934 | thread, task, ignore_count, ops, |
44f238bb | 8935 | from_tty, enabled, internal, flags, |
56435ebe | 8936 | canonical->special_display); |
c3f6f71d | 8937 | } |
c3f6f71d | 8938 | } |
c906108c | 8939 | |
f00aae0f | 8940 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8941 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8942 | addresses found. LOCATION points to the end of the SAL (for |
8943 | linespec locations). | |
9998af43 TJB |
8944 | |
8945 | The array and the line spec strings are allocated on the heap, it is | |
8946 | the caller's responsibility to free them. */ | |
c906108c | 8947 | |
b9362cc7 | 8948 | static void |
f00aae0f | 8949 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8950 | struct linespec_result *canonical) |
c3f6f71d | 8951 | { |
f00aae0f KS |
8952 | struct symtab_and_line cursal; |
8953 | ||
8954 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8955 | { | |
a20714ff | 8956 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8957 | |
a20714ff | 8958 | if (spec == NULL) |
f00aae0f KS |
8959 | { |
8960 | /* The last displayed codepoint, if it's valid, is our default | |
8961 | breakpoint address. */ | |
8962 | if (last_displayed_sal_is_valid ()) | |
8963 | { | |
f00aae0f KS |
8964 | /* Set sal's pspace, pc, symtab, and line to the values |
8965 | corresponding to the last call to print_frame_info. | |
8966 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8967 | as the breakpoint line number is inappropriate otherwise. | |
8968 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8969 | symtab_and_line sal = get_last_displayed_sal (); |
8970 | CORE_ADDR pc = sal.pc; | |
8971 | ||
f00aae0f KS |
8972 | sal = find_pc_line (pc, 0); |
8973 | ||
8974 | /* "break" without arguments is equivalent to "break *PC" | |
8975 | where PC is the last displayed codepoint's address. So | |
8976 | make sure to set sal.explicit_pc to prevent GDB from | |
8977 | trying to expand the list of sals to include all other | |
8978 | instances with the same symtab and line. */ | |
8979 | sal.pc = pc; | |
8980 | sal.explicit_pc = 1; | |
8981 | ||
6c5b2ebe PA |
8982 | struct linespec_sals lsal; |
8983 | lsal.sals = {sal}; | |
f00aae0f KS |
8984 | lsal.canonical = NULL; |
8985 | ||
6c5b2ebe | 8986 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8987 | return; |
8988 | } | |
8989 | else | |
8990 | error (_("No default breakpoint address now.")); | |
c906108c | 8991 | } |
c906108c | 8992 | } |
f00aae0f KS |
8993 | |
8994 | /* Force almost all breakpoints to be in terms of the | |
8995 | current_source_symtab (which is decode_line_1's default). | |
8996 | This should produce the results we want almost all of the | |
8997 | time while leaving default_breakpoint_* alone. | |
8998 | ||
8999 | ObjC: However, don't match an Objective-C method name which | |
9000 | may have a '+' or '-' succeeded by a '['. */ | |
9001 | cursal = get_current_source_symtab_and_line (); | |
9002 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9003 | { |
a20714ff | 9004 | const char *spec = NULL; |
cc80f267 | 9005 | |
f00aae0f | 9006 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9007 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9008 | |
f00aae0f | 9009 | if (!cursal.symtab |
a20714ff PA |
9010 | || (spec != NULL |
9011 | && strchr ("+-", spec[0]) != NULL | |
9012 | && spec[1] != '[')) | |
f00aae0f | 9013 | { |
c2f4122d | 9014 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9015 | get_last_displayed_symtab (), |
9016 | get_last_displayed_line (), | |
9017 | canonical, NULL, NULL); | |
9018 | return; | |
9019 | } | |
c906108c | 9020 | } |
f00aae0f | 9021 | |
c2f4122d | 9022 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9023 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9024 | } |
c906108c | 9025 | |
c906108c | 9026 | |
c3f6f71d | 9027 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9028 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9029 | |
b9362cc7 | 9030 | static void |
6c5b2ebe | 9031 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9032 | { |
6c5b2ebe PA |
9033 | for (auto &sal : sals) |
9034 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9035 | } |
9036 | ||
7a697b8d SS |
9037 | /* Fast tracepoints may have restrictions on valid locations. For |
9038 | instance, a fast tracepoint using a jump instead of a trap will | |
9039 | likely have to overwrite more bytes than a trap would, and so can | |
9040 | only be placed where the instruction is longer than the jump, or a | |
9041 | multi-instruction sequence does not have a jump into the middle of | |
9042 | it, etc. */ | |
9043 | ||
9044 | static void | |
9045 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9046 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9047 | { |
6c5b2ebe | 9048 | for (const auto &sal : sals) |
7a697b8d | 9049 | { |
f8eba3c6 TT |
9050 | struct gdbarch *sarch; |
9051 | ||
6c5b2ebe | 9052 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9053 | /* We fall back to GDBARCH if there is no architecture |
9054 | associated with SAL. */ | |
9055 | if (sarch == NULL) | |
9056 | sarch = gdbarch; | |
281d762b TT |
9057 | std::string msg; |
9058 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9059 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9060 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9061 | } |
9062 | } | |
9063 | ||
018d34a4 VP |
9064 | /* Given TOK, a string specification of condition and thread, as |
9065 | accepted by the 'break' command, extract the condition | |
9066 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9067 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9068 | If no condition is found, *COND_STRING is set to NULL. |
9069 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9070 | |
9071 | static void | |
bbc13ae3 | 9072 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9073 | char **cond_string, int *thread, int *task, |
9074 | char **rest) | |
018d34a4 VP |
9075 | { |
9076 | *cond_string = NULL; | |
9077 | *thread = -1; | |
ed1d1739 KS |
9078 | *task = 0; |
9079 | *rest = NULL; | |
9080 | ||
018d34a4 VP |
9081 | while (tok && *tok) |
9082 | { | |
bbc13ae3 | 9083 | const char *end_tok; |
018d34a4 | 9084 | int toklen; |
bbc13ae3 KS |
9085 | const char *cond_start = NULL; |
9086 | const char *cond_end = NULL; | |
cc59ec59 | 9087 | |
f1735a53 | 9088 | tok = skip_spaces (tok); |
e7e0cddf SS |
9089 | |
9090 | if ((*tok == '"' || *tok == ',') && rest) | |
9091 | { | |
9092 | *rest = savestring (tok, strlen (tok)); | |
9093 | return; | |
9094 | } | |
9095 | ||
f1735a53 | 9096 | end_tok = skip_to_space (tok); |
d634f2de | 9097 | |
018d34a4 | 9098 | toklen = end_tok - tok; |
d634f2de | 9099 | |
018d34a4 VP |
9100 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9101 | { | |
9102 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9103 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9104 | cond_end = tok; |
d634f2de | 9105 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9106 | } |
9107 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9108 | { | |
5d5658a1 PA |
9109 | const char *tmptok; |
9110 | struct thread_info *thr; | |
d634f2de | 9111 | |
018d34a4 | 9112 | tok = end_tok + 1; |
5d5658a1 | 9113 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9114 | if (tok == tmptok) |
9115 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9116 | *thread = thr->global_num; |
bbc13ae3 | 9117 | tok = tmptok; |
018d34a4 | 9118 | } |
4a306c9a JB |
9119 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9120 | { | |
9121 | char *tmptok; | |
9122 | ||
9123 | tok = end_tok + 1; | |
bbc13ae3 | 9124 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9125 | if (tok == tmptok) |
9126 | error (_("Junk after task keyword.")); | |
9127 | if (!valid_task_id (*task)) | |
b6199126 | 9128 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9129 | tok = tmptok; |
4a306c9a | 9130 | } |
e7e0cddf SS |
9131 | else if (rest) |
9132 | { | |
9133 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9134 | return; |
e7e0cddf | 9135 | } |
018d34a4 VP |
9136 | else |
9137 | error (_("Junk at end of arguments.")); | |
9138 | } | |
9139 | } | |
9140 | ||
0fb4aa4b PA |
9141 | /* Decode a static tracepoint marker spec. */ |
9142 | ||
6c5b2ebe | 9143 | static std::vector<symtab_and_line> |
f00aae0f | 9144 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9145 | { |
f00aae0f KS |
9146 | const char *p = &(*arg_p)[3]; |
9147 | const char *endp; | |
0fb4aa4b | 9148 | |
f1735a53 | 9149 | p = skip_spaces (p); |
0fb4aa4b | 9150 | |
f1735a53 | 9151 | endp = skip_to_space (p); |
0fb4aa4b | 9152 | |
81b1e71c | 9153 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9154 | |
5d9310c4 SM |
9155 | std::vector<static_tracepoint_marker> markers |
9156 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9157 | if (markers.empty ()) | |
81b1e71c TT |
9158 | error (_("No known static tracepoint marker named %s"), |
9159 | marker_str.c_str ()); | |
0fb4aa4b | 9160 | |
6c5b2ebe | 9161 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9162 | sals.reserve (markers.size ()); |
0fb4aa4b | 9163 | |
5d9310c4 | 9164 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9165 | { |
5d9310c4 SM |
9166 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9167 | sal.pc = marker.address; | |
6c5b2ebe | 9168 | sals.push_back (sal); |
5d9310c4 | 9169 | } |
0fb4aa4b | 9170 | |
0fb4aa4b PA |
9171 | *arg_p = endp; |
9172 | return sals; | |
9173 | } | |
9174 | ||
bac7c5cf GB |
9175 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9176 | according to IS_TRACEPOINT. */ | |
9177 | ||
9178 | static const struct breakpoint_ops * | |
9179 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9180 | bool is_tracepoint) | |
9181 | { | |
9182 | if (is_tracepoint) | |
9183 | { | |
9184 | if (location_type == PROBE_LOCATION) | |
9185 | return &tracepoint_probe_breakpoint_ops; | |
9186 | else | |
9187 | return &tracepoint_breakpoint_ops; | |
9188 | } | |
9189 | else | |
9190 | { | |
9191 | if (location_type == PROBE_LOCATION) | |
9192 | return &bkpt_probe_breakpoint_ops; | |
9193 | else | |
9194 | return &bkpt_breakpoint_ops; | |
9195 | } | |
9196 | } | |
9197 | ||
9198 | /* See breakpoint.h. */ | |
9199 | ||
9200 | const struct breakpoint_ops * | |
9201 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9202 | bool is_tracepoint) | |
9203 | { | |
9204 | if (location != nullptr) | |
9205 | return breakpoint_ops_for_event_location_type | |
9206 | (event_location_type (location), is_tracepoint); | |
9207 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9208 | } | |
9209 | ||
f00aae0f | 9210 | /* See breakpoint.h. */ |
0101ce28 | 9211 | |
8cdf0e15 VP |
9212 | int |
9213 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9214 | const struct event_location *location, |
9215 | const char *cond_string, | |
9216 | int thread, const char *extra_string, | |
f00aae0f | 9217 | int parse_extra, |
0fb4aa4b | 9218 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9219 | int ignore_count, |
9220 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9221 | const struct breakpoint_ops *ops, |
44f238bb PA |
9222 | int from_tty, int enabled, int internal, |
9223 | unsigned flags) | |
c3f6f71d | 9224 | { |
7efd8fc2 | 9225 | struct linespec_result canonical; |
0101ce28 | 9226 | int pending = 0; |
4a306c9a | 9227 | int task = 0; |
86b17b60 | 9228 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9229 | |
348d480f PA |
9230 | gdb_assert (ops != NULL); |
9231 | ||
f00aae0f KS |
9232 | /* If extra_string isn't useful, set it to NULL. */ |
9233 | if (extra_string != NULL && *extra_string == '\0') | |
9234 | extra_string = NULL; | |
9235 | ||
a70b8144 | 9236 | try |
b78a6381 | 9237 | { |
f00aae0f | 9238 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9239 | } |
230d2906 | 9240 | catch (const gdb_exception_error &e) |
0101ce28 | 9241 | { |
492d29ea PA |
9242 | /* If caller is interested in rc value from parse, set |
9243 | value. */ | |
9244 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9245 | { |
05ff989b AC |
9246 | /* If pending breakpoint support is turned off, throw |
9247 | error. */ | |
fa8d40ab JJ |
9248 | |
9249 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9250 | throw; |
723a2275 VP |
9251 | |
9252 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9253 | |
05ff989b AC |
9254 | /* If pending breakpoint support is auto query and the user |
9255 | selects no, then simply return the error code. */ | |
059fb39f | 9256 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9257 | && !nquery (_("Make %s pending on future shared library load? "), |
9258 | bptype_string (type_wanted))) | |
fd9b8c24 | 9259 | return 0; |
fa8d40ab | 9260 | |
05ff989b AC |
9261 | /* At this point, either the user was queried about setting |
9262 | a pending breakpoint and selected yes, or pending | |
9263 | breakpoint behavior is on and thus a pending breakpoint | |
9264 | is defaulted on behalf of the user. */ | |
f00aae0f | 9265 | pending = 1; |
0101ce28 | 9266 | } |
492d29ea | 9267 | else |
eedc3f4f | 9268 | throw; |
0101ce28 | 9269 | } |
492d29ea | 9270 | |
6c5b2ebe | 9271 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9272 | return 0; |
c3f6f71d | 9273 | |
c3f6f71d JM |
9274 | /* Resolve all line numbers to PC's and verify that the addresses |
9275 | are ok for the target. */ | |
0101ce28 | 9276 | if (!pending) |
f8eba3c6 | 9277 | { |
6c5b2ebe PA |
9278 | for (auto &lsal : canonical.lsals) |
9279 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9280 | } |
c3f6f71d | 9281 | |
7a697b8d | 9282 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9283 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9284 | { |
6c5b2ebe PA |
9285 | for (const auto &lsal : canonical.lsals) |
9286 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9287 | } |
7a697b8d | 9288 | |
c3f6f71d JM |
9289 | /* Verify that condition can be parsed, before setting any |
9290 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9291 | breakpoint. */ |
0101ce28 | 9292 | if (!pending) |
c3f6f71d | 9293 | { |
e1e01040 PA |
9294 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9295 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9296 | ||
f00aae0f | 9297 | if (parse_extra) |
72b2ff0e | 9298 | { |
0878d0fa | 9299 | char *rest; |
e1e01040 | 9300 | char *cond; |
52d361e1 | 9301 | |
6c5b2ebe | 9302 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9303 | |
0878d0fa YQ |
9304 | /* Here we only parse 'arg' to separate condition |
9305 | from thread number, so parsing in context of first | |
9306 | sal is OK. When setting the breakpoint we'll | |
9307 | re-parse it in context of each sal. */ | |
9308 | ||
6c5b2ebe | 9309 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9310 | &cond, &thread, &task, &rest); |
9311 | cond_string_copy.reset (cond); | |
9312 | extra_string_copy.reset (rest); | |
72b2ff0e | 9313 | } |
2f069f6f | 9314 | else |
72b2ff0e | 9315 | { |
f00aae0f KS |
9316 | if (type_wanted != bp_dprintf |
9317 | && extra_string != NULL && *extra_string != '\0') | |
9318 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9319 | |
9320 | /* Create a private copy of condition string. */ | |
9321 | if (cond_string) | |
e1e01040 | 9322 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9323 | /* Create a private copy of any extra string. */ |
9324 | if (extra_string) | |
e1e01040 | 9325 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9326 | } |
0fb4aa4b | 9327 | |
52d361e1 | 9328 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9329 | std::move (cond_string_copy), |
9330 | std::move (extra_string_copy), | |
9331 | type_wanted, | |
d9b3f62e PA |
9332 | tempflag ? disp_del : disp_donttouch, |
9333 | thread, task, ignore_count, ops, | |
44f238bb | 9334 | from_tty, enabled, internal, flags); |
c906108c | 9335 | } |
0101ce28 JJ |
9336 | else |
9337 | { | |
a5e364af | 9338 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9339 | |
a5e364af | 9340 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9341 | b->location = copy_event_location (location); |
bfccc43c | 9342 | |
f00aae0f KS |
9343 | if (parse_extra) |
9344 | b->cond_string = NULL; | |
e12c7713 MK |
9345 | else |
9346 | { | |
9347 | /* Create a private copy of condition string. */ | |
e1e01040 | 9348 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9349 | b->thread = thread; |
e12c7713 | 9350 | } |
f00aae0f KS |
9351 | |
9352 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9353 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9354 | b->ignore_count = ignore_count; |
0101ce28 | 9355 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9356 | b->condition_not_parsed = 1; |
41447f92 | 9357 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9358 | if ((type_wanted != bp_breakpoint |
9359 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9360 | b->pspace = current_program_space; |
8bea4e01 | 9361 | |
b270e6f9 | 9362 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9363 | } |
9364 | ||
6c5b2ebe | 9365 | if (canonical.lsals.size () > 1) |
95a42b64 | 9366 | { |
3e43a32a MS |
9367 | warning (_("Multiple breakpoints were set.\nUse the " |
9368 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9369 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9370 | } |
9371 | ||
44702360 | 9372 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9373 | |
9374 | return 1; | |
c3f6f71d | 9375 | } |
c906108c | 9376 | |
348d480f | 9377 | /* Set a breakpoint. |
72b2ff0e VP |
9378 | ARG is a string describing breakpoint address, |
9379 | condition, and thread. | |
9380 | FLAG specifies if a breakpoint is hardware on, | |
9381 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9382 | and BP_TEMPFLAG. */ | |
348d480f | 9383 | |
98deb0da | 9384 | static void |
f2fc3015 | 9385 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9386 | { |
72b2ff0e | 9387 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9388 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9389 | ? bp_hardware_breakpoint | |
9390 | : bp_breakpoint); | |
f00aae0f | 9391 | |
ffc2605c | 9392 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9393 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9394 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9395 | |
8cdf0e15 | 9396 | create_breakpoint (get_current_arch (), |
ffc2605c | 9397 | location.get (), |
f00aae0f | 9398 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9399 | tempflag, type_wanted, |
8cdf0e15 VP |
9400 | 0 /* Ignore count */, |
9401 | pending_break_support, | |
55aa24fb | 9402 | ops, |
8cdf0e15 | 9403 | from_tty, |
84f4c1fe | 9404 | 1 /* enabled */, |
44f238bb PA |
9405 | 0 /* internal */, |
9406 | 0); | |
c906108c SS |
9407 | } |
9408 | ||
c906108c SS |
9409 | /* Helper function for break_command_1 and disassemble_command. */ |
9410 | ||
9411 | void | |
fba45db2 | 9412 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9413 | { |
9414 | CORE_ADDR pc; | |
9415 | ||
9416 | if (sal->pc == 0 && sal->symtab != NULL) | |
9417 | { | |
9418 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9419 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9420 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9421 | sal->pc = pc; |
6a048695 | 9422 | |
4a64f543 MS |
9423 | /* If this SAL corresponds to a breakpoint inserted using a line |
9424 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9425 | if (sal->explicit_line) |
059acae7 | 9426 | skip_prologue_sal (sal); |
c906108c SS |
9427 | } |
9428 | ||
9429 | if (sal->section == 0 && sal->symtab != NULL) | |
9430 | { | |
346d1dfe | 9431 | const struct blockvector *bv; |
3977b71f | 9432 | const struct block *b; |
c5aa993b | 9433 | struct symbol *sym; |
c906108c | 9434 | |
43f3e411 DE |
9435 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9436 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9437 | if (bv != NULL) |
9438 | { | |
7f0df278 | 9439 | sym = block_linkage_function (b); |
c906108c SS |
9440 | if (sym != NULL) |
9441 | { | |
eb822aa6 DE |
9442 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9443 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9444 | sym); | |
c906108c SS |
9445 | } |
9446 | else | |
9447 | { | |
4a64f543 MS |
9448 | /* It really is worthwhile to have the section, so we'll |
9449 | just have to look harder. This case can be executed | |
9450 | if we have line numbers but no functions (as can | |
9451 | happen in assembly source). */ | |
c906108c | 9452 | |
5ed8105e | 9453 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9454 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9455 | |
5ed8105e | 9456 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9457 | if (msym.minsym) |
efd66ac6 | 9458 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9459 | } |
9460 | } | |
9461 | } | |
9462 | } | |
9463 | ||
9464 | void | |
0b39b52e | 9465 | break_command (const char *arg, int from_tty) |
c906108c | 9466 | { |
db107f19 | 9467 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9468 | } |
9469 | ||
c906108c | 9470 | void |
0b39b52e | 9471 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9472 | { |
db107f19 | 9473 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9474 | } |
9475 | ||
c906108c | 9476 | static void |
0b39b52e | 9477 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9478 | { |
db107f19 | 9479 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9480 | } |
9481 | ||
9482 | static void | |
0b39b52e | 9483 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9484 | { |
db107f19 | 9485 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9486 | } |
9487 | ||
9488 | static void | |
ee7ddd71 | 9489 | stop_command (const char *arg, int from_tty) |
c906108c | 9490 | { |
a3f17187 | 9491 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9492 | Usage: stop in <function | address>\n\ |
a3f17187 | 9493 | stop at <line>\n")); |
c906108c SS |
9494 | } |
9495 | ||
9496 | static void | |
4495129a | 9497 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9498 | { |
9499 | int badInput = 0; | |
9500 | ||
cafb3438 | 9501 | if (arg == NULL) |
c906108c SS |
9502 | badInput = 1; |
9503 | else if (*arg != '*') | |
9504 | { | |
4495129a | 9505 | const char *argptr = arg; |
c906108c SS |
9506 | int hasColon = 0; |
9507 | ||
4a64f543 | 9508 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9509 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9510 | function/method name. */ |
c906108c | 9511 | while (*argptr && !hasColon) |
c5aa993b JM |
9512 | { |
9513 | hasColon = (*argptr == ':'); | |
9514 | argptr++; | |
9515 | } | |
c906108c SS |
9516 | |
9517 | if (hasColon) | |
c5aa993b | 9518 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9519 | else |
c5aa993b | 9520 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9521 | } |
9522 | ||
9523 | if (badInput) | |
a3f17187 | 9524 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9525 | else |
db107f19 | 9526 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9527 | } |
9528 | ||
9529 | static void | |
4495129a | 9530 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9531 | { |
9532 | int badInput = 0; | |
9533 | ||
cafb3438 | 9534 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9535 | badInput = 1; |
9536 | else | |
9537 | { | |
4495129a | 9538 | const char *argptr = arg; |
c906108c SS |
9539 | int hasColon = 0; |
9540 | ||
4a64f543 MS |
9541 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9542 | it is probably a line number. */ | |
c906108c | 9543 | while (*argptr && !hasColon) |
c5aa993b JM |
9544 | { |
9545 | hasColon = (*argptr == ':'); | |
9546 | argptr++; | |
9547 | } | |
c906108c SS |
9548 | |
9549 | if (hasColon) | |
c5aa993b | 9550 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9551 | else |
c5aa993b | 9552 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9553 | } |
9554 | ||
9555 | if (badInput) | |
65e65158 | 9556 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9557 | else |
db107f19 | 9558 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9559 | } |
9560 | ||
e7e0cddf SS |
9561 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9562 | with a prewired command list consisting of a single output command, | |
9563 | built from extra arguments supplied on the dprintf command | |
9564 | line. */ | |
9565 | ||
da821c7b | 9566 | static void |
0b39b52e | 9567 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9568 | { |
ffc2605c | 9569 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9570 | |
9571 | /* If non-NULL, ARG should have been advanced past the location; | |
9572 | the next character must be ','. */ | |
9573 | if (arg != NULL) | |
9574 | { | |
9575 | if (arg[0] != ',' || arg[1] == '\0') | |
9576 | error (_("Format string required")); | |
9577 | else | |
9578 | { | |
9579 | /* Skip the comma. */ | |
9580 | ++arg; | |
9581 | } | |
9582 | } | |
9583 | ||
e7e0cddf | 9584 | create_breakpoint (get_current_arch (), |
ffc2605c | 9585 | location.get (), |
f00aae0f | 9586 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9587 | 0, bp_dprintf, |
9588 | 0 /* Ignore count */, | |
9589 | pending_break_support, | |
9590 | &dprintf_breakpoint_ops, | |
9591 | from_tty, | |
9592 | 1 /* enabled */, | |
9593 | 0 /* internal */, | |
9594 | 0); | |
9595 | } | |
9596 | ||
d3ce09f5 | 9597 | static void |
0b39b52e | 9598 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9599 | { |
9600 | error (_("May only run agent-printf on the target")); | |
9601 | } | |
9602 | ||
f1310107 TJB |
9603 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9604 | ranged breakpoints. */ | |
9605 | ||
9606 | static int | |
9607 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9608 | const address_space *aspace, |
09ac7c10 TT |
9609 | CORE_ADDR bp_addr, |
9610 | const struct target_waitstatus *ws) | |
f1310107 | 9611 | { |
09ac7c10 | 9612 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9613 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9614 | return 0; |
9615 | ||
f1310107 TJB |
9616 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9617 | bl->length, aspace, bp_addr); | |
9618 | } | |
9619 | ||
9620 | /* Implement the "resources_needed" breakpoint_ops method for | |
9621 | ranged breakpoints. */ | |
9622 | ||
9623 | static int | |
9624 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9625 | { | |
9626 | return target_ranged_break_num_registers (); | |
9627 | } | |
9628 | ||
9629 | /* Implement the "print_it" breakpoint_ops method for | |
9630 | ranged breakpoints. */ | |
9631 | ||
9632 | static enum print_stop_action | |
348d480f | 9633 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9634 | { |
348d480f | 9635 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9636 | struct bp_location *bl = b->loc; |
79a45e25 | 9637 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9638 | |
9639 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9640 | ||
9641 | /* Ranged breakpoints have only one location. */ | |
9642 | gdb_assert (bl && bl->next == NULL); | |
9643 | ||
9644 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9645 | |
9646 | maybe_print_thread_hit_breakpoint (uiout); | |
9647 | ||
f1310107 | 9648 | if (b->disposition == disp_del) |
112e8700 | 9649 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9650 | else |
112e8700 SM |
9651 | uiout->text ("Ranged breakpoint "); |
9652 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9653 | { |
112e8700 | 9654 | uiout->field_string ("reason", |
f1310107 | 9655 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9656 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9657 | } |
381befee | 9658 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9659 | uiout->text (", "); |
f1310107 TJB |
9660 | |
9661 | return PRINT_SRC_AND_LOC; | |
9662 | } | |
9663 | ||
9664 | /* Implement the "print_one" breakpoint_ops method for | |
9665 | ranged breakpoints. */ | |
9666 | ||
9667 | static void | |
9668 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9669 | struct bp_location **last_loc) | |
9670 | { | |
9671 | struct bp_location *bl = b->loc; | |
9672 | struct value_print_options opts; | |
79a45e25 | 9673 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9674 | |
9675 | /* Ranged breakpoints have only one location. */ | |
9676 | gdb_assert (bl && bl->next == NULL); | |
9677 | ||
9678 | get_user_print_options (&opts); | |
9679 | ||
9680 | if (opts.addressprint) | |
9681 | /* We don't print the address range here, it will be printed later | |
9682 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9683 | uiout->field_skip ("addr"); |
f1310107 TJB |
9684 | annotate_field (5); |
9685 | print_breakpoint_location (b, bl); | |
9686 | *last_loc = bl; | |
9687 | } | |
9688 | ||
9689 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9690 | ranged breakpoints. */ | |
9691 | ||
9692 | static void | |
9693 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9694 | struct ui_out *uiout) | |
9695 | { | |
9696 | CORE_ADDR address_start, address_end; | |
9697 | struct bp_location *bl = b->loc; | |
d7e74731 | 9698 | string_file stb; |
f1310107 TJB |
9699 | |
9700 | gdb_assert (bl); | |
9701 | ||
9702 | address_start = bl->address; | |
9703 | address_end = address_start + bl->length - 1; | |
9704 | ||
112e8700 | 9705 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9706 | stb.printf ("[%s, %s]", |
9707 | print_core_address (bl->gdbarch, address_start), | |
9708 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9709 | uiout->field_stream ("addr", stb); |
9710 | uiout->text ("\n"); | |
f1310107 TJB |
9711 | } |
9712 | ||
9713 | /* Implement the "print_mention" breakpoint_ops method for | |
9714 | ranged breakpoints. */ | |
9715 | ||
9716 | static void | |
9717 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9718 | { | |
9719 | struct bp_location *bl = b->loc; | |
79a45e25 | 9720 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9721 | |
9722 | gdb_assert (bl); | |
9723 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9724 | ||
2d33446d TT |
9725 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9726 | b->number, paddress (bl->gdbarch, bl->address), | |
9727 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9728 | } |
9729 | ||
9730 | /* Implement the "print_recreate" breakpoint_ops method for | |
9731 | ranged breakpoints. */ | |
9732 | ||
9733 | static void | |
9734 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9735 | { | |
f00aae0f | 9736 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9737 | event_location_to_string (b->location.get ()), |
9738 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9739 | print_recreate_thread (b, fp); |
f1310107 TJB |
9740 | } |
9741 | ||
9742 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9743 | ||
2060206e | 9744 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9745 | |
9746 | /* Find the address where the end of the breakpoint range should be | |
9747 | placed, given the SAL of the end of the range. This is so that if | |
9748 | the user provides a line number, the end of the range is set to the | |
9749 | last instruction of the given line. */ | |
9750 | ||
9751 | static CORE_ADDR | |
9752 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9753 | { | |
9754 | CORE_ADDR end; | |
9755 | ||
9756 | /* If the user provided a PC value, use it. Otherwise, | |
9757 | find the address of the end of the given location. */ | |
9758 | if (sal.explicit_pc) | |
9759 | end = sal.pc; | |
9760 | else | |
9761 | { | |
9762 | int ret; | |
9763 | CORE_ADDR start; | |
9764 | ||
9765 | ret = find_line_pc_range (sal, &start, &end); | |
9766 | if (!ret) | |
9767 | error (_("Could not find location of the end of the range.")); | |
9768 | ||
9769 | /* find_line_pc_range returns the start of the next line. */ | |
9770 | end--; | |
9771 | } | |
9772 | ||
9773 | return end; | |
9774 | } | |
9775 | ||
9776 | /* Implement the "break-range" CLI command. */ | |
9777 | ||
9778 | static void | |
0b39b52e | 9779 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9780 | { |
f2fc3015 | 9781 | const char *arg_start; |
f1310107 TJB |
9782 | struct linespec_result canonical_start, canonical_end; |
9783 | int bp_count, can_use_bp, length; | |
9784 | CORE_ADDR end; | |
9785 | struct breakpoint *b; | |
f1310107 TJB |
9786 | |
9787 | /* We don't support software ranged breakpoints. */ | |
9788 | if (target_ranged_break_num_registers () < 0) | |
9789 | error (_("This target does not support hardware ranged breakpoints.")); | |
9790 | ||
9791 | bp_count = hw_breakpoint_used_count (); | |
9792 | bp_count += target_ranged_break_num_registers (); | |
9793 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9794 | bp_count, 0); | |
9795 | if (can_use_bp < 0) | |
9796 | error (_("Hardware breakpoints used exceeds limit.")); | |
9797 | ||
f8eba3c6 | 9798 | arg = skip_spaces (arg); |
f1310107 TJB |
9799 | if (arg == NULL || arg[0] == '\0') |
9800 | error(_("No address range specified.")); | |
9801 | ||
f8eba3c6 | 9802 | arg_start = arg; |
ffc2605c TT |
9803 | event_location_up start_location = string_to_event_location (&arg, |
9804 | current_language); | |
9805 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9806 | |
9807 | if (arg[0] != ',') | |
9808 | error (_("Too few arguments.")); | |
6c5b2ebe | 9809 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9810 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9811 | |
6c5b2ebe | 9812 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9813 | |
6c5b2ebe PA |
9814 | if (canonical_start.lsals.size () > 1 |
9815 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9816 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9817 | ||
6c5b2ebe | 9818 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9819 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9820 | |
9821 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9822 | arg = skip_spaces (arg); |
f1310107 TJB |
9823 | |
9824 | /* Parse the end location. */ | |
9825 | ||
f1310107 TJB |
9826 | arg_start = arg; |
9827 | ||
f8eba3c6 | 9828 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9829 | parse_breakpoint_sals because we need to specify the start location's |
9830 | symtab and line as the default symtab and line for the end of the | |
9831 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9832 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9833 | event_location_up end_location = string_to_event_location (&arg, |
9834 | current_language); | |
9835 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9836 | sal_start.symtab, sal_start.line, |
9837 | &canonical_end, NULL, NULL); | |
9838 | ||
6c5b2ebe | 9839 | if (canonical_end.lsals.empty ()) |
f1310107 | 9840 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9841 | |
6c5b2ebe PA |
9842 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9843 | if (canonical_end.lsals.size () > 1 | |
9844 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9845 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9846 | ||
6c5b2ebe | 9847 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9848 | |
9849 | end = find_breakpoint_range_end (sal_end); | |
9850 | if (sal_start.pc > end) | |
177b42fe | 9851 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9852 | |
9853 | length = end - sal_start.pc + 1; | |
9854 | if (length < 0) | |
9855 | /* Length overflowed. */ | |
9856 | error (_("Address range too large.")); | |
9857 | else if (length == 1) | |
9858 | { | |
9859 | /* This range is simple enough to be handled by | |
9860 | the `hbreak' command. */ | |
81b1e71c | 9861 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9862 | |
9863 | return; | |
9864 | } | |
9865 | ||
9866 | /* Now set up the breakpoint. */ | |
9867 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9868 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9869 | set_breakpoint_count (breakpoint_count + 1); |
9870 | b->number = breakpoint_count; | |
9871 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9872 | b->location = std::move (start_location); |
9873 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9874 | b->loc->length = length; |
9875 | ||
f1310107 | 9876 | mention (b); |
76727919 | 9877 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9878 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9879 | } |
9880 | ||
4a64f543 MS |
9881 | /* Return non-zero if EXP is verified as constant. Returned zero |
9882 | means EXP is variable. Also the constant detection may fail for | |
9883 | some constant expressions and in such case still falsely return | |
9884 | zero. */ | |
2e6e3d9c | 9885 | |
65d79d4b SDJ |
9886 | static int |
9887 | watchpoint_exp_is_const (const struct expression *exp) | |
9888 | { | |
9889 | int i = exp->nelts; | |
9890 | ||
9891 | while (i > 0) | |
9892 | { | |
9893 | int oplenp, argsp; | |
9894 | ||
9895 | /* We are only interested in the descriptor of each element. */ | |
9896 | operator_length (exp, i, &oplenp, &argsp); | |
9897 | i -= oplenp; | |
9898 | ||
9899 | switch (exp->elts[i].opcode) | |
9900 | { | |
9901 | case BINOP_ADD: | |
9902 | case BINOP_SUB: | |
9903 | case BINOP_MUL: | |
9904 | case BINOP_DIV: | |
9905 | case BINOP_REM: | |
9906 | case BINOP_MOD: | |
9907 | case BINOP_LSH: | |
9908 | case BINOP_RSH: | |
9909 | case BINOP_LOGICAL_AND: | |
9910 | case BINOP_LOGICAL_OR: | |
9911 | case BINOP_BITWISE_AND: | |
9912 | case BINOP_BITWISE_IOR: | |
9913 | case BINOP_BITWISE_XOR: | |
9914 | case BINOP_EQUAL: | |
9915 | case BINOP_NOTEQUAL: | |
9916 | case BINOP_LESS: | |
9917 | case BINOP_GTR: | |
9918 | case BINOP_LEQ: | |
9919 | case BINOP_GEQ: | |
9920 | case BINOP_REPEAT: | |
9921 | case BINOP_COMMA: | |
9922 | case BINOP_EXP: | |
9923 | case BINOP_MIN: | |
9924 | case BINOP_MAX: | |
9925 | case BINOP_INTDIV: | |
9926 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9927 | case TERNOP_COND: |
9928 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9929 | |
9930 | case OP_LONG: | |
edd079d9 | 9931 | case OP_FLOAT: |
65d79d4b SDJ |
9932 | case OP_LAST: |
9933 | case OP_COMPLEX: | |
9934 | case OP_STRING: | |
65d79d4b SDJ |
9935 | case OP_ARRAY: |
9936 | case OP_TYPE: | |
608b4967 TT |
9937 | case OP_TYPEOF: |
9938 | case OP_DECLTYPE: | |
6e72ca20 | 9939 | case OP_TYPEID: |
65d79d4b SDJ |
9940 | case OP_NAME: |
9941 | case OP_OBJC_NSSTRING: | |
9942 | ||
9943 | case UNOP_NEG: | |
9944 | case UNOP_LOGICAL_NOT: | |
9945 | case UNOP_COMPLEMENT: | |
9946 | case UNOP_ADDR: | |
9947 | case UNOP_HIGH: | |
aeaa2474 | 9948 | case UNOP_CAST: |
9eaf6705 TT |
9949 | |
9950 | case UNOP_CAST_TYPE: | |
9951 | case UNOP_REINTERPRET_CAST: | |
9952 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9953 | /* Unary, binary and ternary operators: We have to check |
9954 | their operands. If they are constant, then so is the | |
9955 | result of that operation. For instance, if A and B are | |
9956 | determined to be constants, then so is "A + B". | |
9957 | ||
9958 | UNOP_IND is one exception to the rule above, because the | |
9959 | value of *ADDR is not necessarily a constant, even when | |
9960 | ADDR is. */ | |
65d79d4b SDJ |
9961 | break; |
9962 | ||
9963 | case OP_VAR_VALUE: | |
9964 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9965 | |
65d79d4b | 9966 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9967 | possible that a buggy compiler could mark a variable as |
9968 | constant even when it is not, and TYPE_CONST would return | |
9969 | true in this case, while SYMBOL_CLASS wouldn't. | |
9970 | ||
9971 | We also have to check for function symbols because they | |
9972 | are always constant. */ | |
65d79d4b SDJ |
9973 | { |
9974 | struct symbol *s = exp->elts[i + 2].symbol; | |
9975 | ||
9976 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9977 | && SYMBOL_CLASS (s) != LOC_CONST | |
9978 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9979 | return 0; | |
9980 | break; | |
9981 | } | |
9982 | ||
9983 | /* The default action is to return 0 because we are using | |
9984 | the optimistic approach here: If we don't know something, | |
9985 | then it is not a constant. */ | |
9986 | default: | |
9987 | return 0; | |
9988 | } | |
9989 | } | |
9990 | ||
9991 | return 1; | |
9992 | } | |
9993 | ||
c1fc2657 | 9994 | /* Watchpoint destructor. */ |
3a5c3e22 | 9995 | |
c1fc2657 | 9996 | watchpoint::~watchpoint () |
3a5c3e22 | 9997 | { |
c1fc2657 SM |
9998 | xfree (this->exp_string); |
9999 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10000 | } |
10001 | ||
348d480f PA |
10002 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10003 | ||
10004 | static void | |
10005 | re_set_watchpoint (struct breakpoint *b) | |
10006 | { | |
3a5c3e22 PA |
10007 | struct watchpoint *w = (struct watchpoint *) b; |
10008 | ||
348d480f PA |
10009 | /* Watchpoint can be either on expression using entirely global |
10010 | variables, or it can be on local variables. | |
10011 | ||
10012 | Watchpoints of the first kind are never auto-deleted, and even | |
10013 | persist across program restarts. Since they can use variables | |
10014 | from shared libraries, we need to reparse expression as libraries | |
10015 | are loaded and unloaded. | |
10016 | ||
10017 | Watchpoints on local variables can also change meaning as result | |
10018 | of solib event. For example, if a watchpoint uses both a local | |
10019 | and a global variables in expression, it's a local watchpoint, | |
10020 | but unloading of a shared library will make the expression | |
10021 | invalid. This is not a very common use case, but we still | |
10022 | re-evaluate expression, to avoid surprises to the user. | |
10023 | ||
10024 | Note that for local watchpoints, we re-evaluate it only if | |
10025 | watchpoints frame id is still valid. If it's not, it means the | |
10026 | watchpoint is out of scope and will be deleted soon. In fact, | |
10027 | I'm not sure we'll ever be called in this case. | |
10028 | ||
10029 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10030 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10031 | |
3a5c3e22 PA |
10032 | Don't do anything about disabled watchpoints, since they will be |
10033 | reevaluated again when enabled. */ | |
10034 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10035 | } |
10036 | ||
77b06cd7 TJB |
10037 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10038 | ||
10039 | static int | |
10040 | insert_watchpoint (struct bp_location *bl) | |
10041 | { | |
3a5c3e22 PA |
10042 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10043 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10044 | |
10045 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10046 | w->cond_exp.get ()); |
77b06cd7 TJB |
10047 | } |
10048 | ||
10049 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10050 | ||
10051 | static int | |
73971819 | 10052 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10053 | { |
3a5c3e22 PA |
10054 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10055 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10056 | |
10057 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10058 | w->cond_exp.get ()); |
e09342b5 TJB |
10059 | } |
10060 | ||
e09342b5 | 10061 | static int |
348d480f | 10062 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10063 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10064 | const struct target_waitstatus *ws) |
e09342b5 | 10065 | { |
348d480f | 10066 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10067 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10068 | |
348d480f PA |
10069 | /* Continuable hardware watchpoints are treated as non-existent if the |
10070 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10071 | some data address). Otherwise gdb won't stop on a break instruction | |
10072 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10073 | been defined. Also skip watchpoints which we know did not trigger | |
10074 | (did not match the data address). */ | |
10075 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10076 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10077 | return 0; |
9c06b0b4 | 10078 | |
348d480f | 10079 | return 1; |
9c06b0b4 TJB |
10080 | } |
10081 | ||
348d480f PA |
10082 | static void |
10083 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10084 | { |
348d480f | 10085 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10086 | |
348d480f | 10087 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10088 | } |
10089 | ||
10090 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10091 | hardware watchpoints. */ |
9c06b0b4 TJB |
10092 | |
10093 | static int | |
348d480f | 10094 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10095 | { |
3a5c3e22 PA |
10096 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10097 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10098 | |
10099 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10100 | } |
10101 | ||
10102 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10103 | hardware watchpoints. */ |
9c06b0b4 TJB |
10104 | |
10105 | static int | |
348d480f | 10106 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10107 | { |
efa80663 PA |
10108 | /* Read and access watchpoints only work with hardware support. */ |
10109 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10110 | } |
10111 | ||
9c06b0b4 | 10112 | static enum print_stop_action |
348d480f | 10113 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10114 | { |
348d480f | 10115 | struct breakpoint *b; |
348d480f | 10116 | enum print_stop_action result; |
3a5c3e22 | 10117 | struct watchpoint *w; |
79a45e25 | 10118 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10119 | |
10120 | gdb_assert (bs->bp_location_at != NULL); | |
10121 | ||
348d480f | 10122 | b = bs->breakpoint_at; |
3a5c3e22 | 10123 | w = (struct watchpoint *) b; |
348d480f | 10124 | |
f303dbd6 PA |
10125 | annotate_watchpoint (b->number); |
10126 | maybe_print_thread_hit_breakpoint (uiout); | |
10127 | ||
d7e74731 PA |
10128 | string_file stb; |
10129 | ||
76f9c9cf | 10130 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10131 | switch (b->type) |
10132 | { | |
348d480f | 10133 | case bp_watchpoint: |
9c06b0b4 | 10134 | case bp_hardware_watchpoint: |
112e8700 SM |
10135 | if (uiout->is_mi_like_p ()) |
10136 | uiout->field_string | |
10137 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10138 | mention (b); |
76f9c9cf | 10139 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10140 | uiout->text ("\nOld value = "); |
850645cf | 10141 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10142 | uiout->field_stream ("old", stb); |
10143 | uiout->text ("\nNew value = "); | |
850645cf | 10144 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10145 | uiout->field_stream ("new", stb); |
10146 | uiout->text ("\n"); | |
348d480f PA |
10147 | /* More than one watchpoint may have been triggered. */ |
10148 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10149 | break; |
10150 | ||
10151 | case bp_read_watchpoint: | |
112e8700 SM |
10152 | if (uiout->is_mi_like_p ()) |
10153 | uiout->field_string | |
10154 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10155 | mention (b); |
76f9c9cf | 10156 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10157 | uiout->text ("\nValue = "); |
850645cf | 10158 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10159 | uiout->field_stream ("value", stb); |
10160 | uiout->text ("\n"); | |
348d480f | 10161 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10162 | break; |
10163 | ||
10164 | case bp_access_watchpoint: | |
348d480f PA |
10165 | if (bs->old_val != NULL) |
10166 | { | |
112e8700 SM |
10167 | if (uiout->is_mi_like_p ()) |
10168 | uiout->field_string | |
10169 | ("reason", | |
348d480f PA |
10170 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10171 | mention (b); | |
76f9c9cf | 10172 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10173 | uiout->text ("\nOld value = "); |
850645cf | 10174 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10175 | uiout->field_stream ("old", stb); |
10176 | uiout->text ("\nNew value = "); | |
348d480f PA |
10177 | } |
10178 | else | |
10179 | { | |
10180 | mention (b); | |
112e8700 SM |
10181 | if (uiout->is_mi_like_p ()) |
10182 | uiout->field_string | |
10183 | ("reason", | |
348d480f | 10184 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10185 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10186 | uiout->text ("\nValue = "); |
348d480f | 10187 | } |
850645cf | 10188 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10189 | uiout->field_stream ("new", stb); |
10190 | uiout->text ("\n"); | |
348d480f | 10191 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10192 | break; |
10193 | default: | |
348d480f | 10194 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10195 | } |
10196 | ||
348d480f PA |
10197 | return result; |
10198 | } | |
10199 | ||
10200 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10201 | watchpoints. */ | |
10202 | ||
10203 | static void | |
10204 | print_mention_watchpoint (struct breakpoint *b) | |
10205 | { | |
3a5c3e22 | 10206 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10207 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10208 | const char *tuple_name; |
348d480f PA |
10209 | |
10210 | switch (b->type) | |
10211 | { | |
10212 | case bp_watchpoint: | |
112e8700 | 10213 | uiout->text ("Watchpoint "); |
46b9c129 | 10214 | tuple_name = "wpt"; |
348d480f PA |
10215 | break; |
10216 | case bp_hardware_watchpoint: | |
112e8700 | 10217 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10218 | tuple_name = "wpt"; |
348d480f PA |
10219 | break; |
10220 | case bp_read_watchpoint: | |
112e8700 | 10221 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10222 | tuple_name = "hw-rwpt"; |
348d480f PA |
10223 | break; |
10224 | case bp_access_watchpoint: | |
112e8700 | 10225 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10226 | tuple_name = "hw-awpt"; |
348d480f PA |
10227 | break; |
10228 | default: | |
10229 | internal_error (__FILE__, __LINE__, | |
10230 | _("Invalid hardware watchpoint type.")); | |
10231 | } | |
10232 | ||
46b9c129 | 10233 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10234 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10235 | uiout->text (": "); |
10236 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10237 | } |
10238 | ||
10239 | /* Implement the "print_recreate" breakpoint_ops method for | |
10240 | watchpoints. */ | |
10241 | ||
10242 | static void | |
10243 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10244 | { | |
3a5c3e22 PA |
10245 | struct watchpoint *w = (struct watchpoint *) b; |
10246 | ||
348d480f PA |
10247 | switch (b->type) |
10248 | { | |
10249 | case bp_watchpoint: | |
10250 | case bp_hardware_watchpoint: | |
10251 | fprintf_unfiltered (fp, "watch"); | |
10252 | break; | |
10253 | case bp_read_watchpoint: | |
10254 | fprintf_unfiltered (fp, "rwatch"); | |
10255 | break; | |
10256 | case bp_access_watchpoint: | |
10257 | fprintf_unfiltered (fp, "awatch"); | |
10258 | break; | |
10259 | default: | |
10260 | internal_error (__FILE__, __LINE__, | |
10261 | _("Invalid watchpoint type.")); | |
10262 | } | |
10263 | ||
3a5c3e22 | 10264 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10265 | print_recreate_thread (b, fp); |
348d480f PA |
10266 | } |
10267 | ||
427cd150 TT |
10268 | /* Implement the "explains_signal" breakpoint_ops method for |
10269 | watchpoints. */ | |
10270 | ||
47591c29 | 10271 | static int |
427cd150 TT |
10272 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10273 | { | |
10274 | /* A software watchpoint cannot cause a signal other than | |
10275 | GDB_SIGNAL_TRAP. */ | |
10276 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10277 | return 0; |
427cd150 | 10278 | |
47591c29 | 10279 | return 1; |
427cd150 TT |
10280 | } |
10281 | ||
348d480f PA |
10282 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10283 | ||
2060206e | 10284 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10285 | |
10286 | /* Implement the "insert" breakpoint_ops method for | |
10287 | masked hardware watchpoints. */ | |
10288 | ||
10289 | static int | |
10290 | insert_masked_watchpoint (struct bp_location *bl) | |
10291 | { | |
3a5c3e22 PA |
10292 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10293 | ||
10294 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10295 | bl->watchpoint_type); |
10296 | } | |
10297 | ||
10298 | /* Implement the "remove" breakpoint_ops method for | |
10299 | masked hardware watchpoints. */ | |
10300 | ||
10301 | static int | |
73971819 | 10302 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10303 | { |
3a5c3e22 PA |
10304 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10305 | ||
10306 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10307 | bl->watchpoint_type); |
10308 | } | |
10309 | ||
10310 | /* Implement the "resources_needed" breakpoint_ops method for | |
10311 | masked hardware watchpoints. */ | |
10312 | ||
10313 | static int | |
10314 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10315 | { | |
3a5c3e22 PA |
10316 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10317 | ||
10318 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10319 | } |
10320 | ||
10321 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10322 | masked hardware watchpoints. */ | |
10323 | ||
10324 | static int | |
10325 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10326 | { | |
10327 | return 0; | |
10328 | } | |
10329 | ||
10330 | /* Implement the "print_it" breakpoint_ops method for | |
10331 | masked hardware watchpoints. */ | |
10332 | ||
10333 | static enum print_stop_action | |
10334 | print_it_masked_watchpoint (bpstat bs) | |
10335 | { | |
10336 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10337 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10338 | |
10339 | /* Masked watchpoints have only one location. */ | |
10340 | gdb_assert (b->loc && b->loc->next == NULL); | |
10341 | ||
f303dbd6 PA |
10342 | annotate_watchpoint (b->number); |
10343 | maybe_print_thread_hit_breakpoint (uiout); | |
10344 | ||
348d480f PA |
10345 | switch (b->type) |
10346 | { | |
10347 | case bp_hardware_watchpoint: | |
112e8700 SM |
10348 | if (uiout->is_mi_like_p ()) |
10349 | uiout->field_string | |
10350 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10351 | break; |
10352 | ||
10353 | case bp_read_watchpoint: | |
112e8700 SM |
10354 | if (uiout->is_mi_like_p ()) |
10355 | uiout->field_string | |
10356 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10357 | break; |
10358 | ||
10359 | case bp_access_watchpoint: | |
112e8700 SM |
10360 | if (uiout->is_mi_like_p ()) |
10361 | uiout->field_string | |
10362 | ("reason", | |
348d480f PA |
10363 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10364 | break; | |
10365 | default: | |
10366 | internal_error (__FILE__, __LINE__, | |
10367 | _("Invalid hardware watchpoint type.")); | |
10368 | } | |
10369 | ||
10370 | mention (b); | |
112e8700 | 10371 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10372 | Check the underlying instruction at PC for the memory\n\ |
10373 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10374 | uiout->text ("\n"); |
9c06b0b4 TJB |
10375 | |
10376 | /* More than one watchpoint may have been triggered. */ | |
10377 | return PRINT_UNKNOWN; | |
10378 | } | |
10379 | ||
10380 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10381 | masked hardware watchpoints. */ | |
10382 | ||
10383 | static void | |
10384 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10385 | struct ui_out *uiout) | |
10386 | { | |
3a5c3e22 PA |
10387 | struct watchpoint *w = (struct watchpoint *) b; |
10388 | ||
9c06b0b4 TJB |
10389 | /* Masked watchpoints have only one location. */ |
10390 | gdb_assert (b->loc && b->loc->next == NULL); | |
10391 | ||
112e8700 SM |
10392 | uiout->text ("\tmask "); |
10393 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10394 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10395 | } |
10396 | ||
10397 | /* Implement the "print_mention" breakpoint_ops method for | |
10398 | masked hardware watchpoints. */ | |
10399 | ||
10400 | static void | |
10401 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10402 | { | |
3a5c3e22 | 10403 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10404 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10405 | const char *tuple_name; |
9c06b0b4 TJB |
10406 | |
10407 | switch (b->type) | |
10408 | { | |
10409 | case bp_hardware_watchpoint: | |
112e8700 | 10410 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10411 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10412 | break; |
10413 | case bp_read_watchpoint: | |
112e8700 | 10414 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10415 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10416 | break; |
10417 | case bp_access_watchpoint: | |
112e8700 | 10418 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10419 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10420 | break; |
10421 | default: | |
10422 | internal_error (__FILE__, __LINE__, | |
10423 | _("Invalid hardware watchpoint type.")); | |
10424 | } | |
10425 | ||
46b9c129 | 10426 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10427 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10428 | uiout->text (": "); |
10429 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10430 | } |
10431 | ||
10432 | /* Implement the "print_recreate" breakpoint_ops method for | |
10433 | masked hardware watchpoints. */ | |
10434 | ||
10435 | static void | |
10436 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10437 | { | |
3a5c3e22 | 10438 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10439 | char tmp[40]; |
10440 | ||
10441 | switch (b->type) | |
10442 | { | |
10443 | case bp_hardware_watchpoint: | |
10444 | fprintf_unfiltered (fp, "watch"); | |
10445 | break; | |
10446 | case bp_read_watchpoint: | |
10447 | fprintf_unfiltered (fp, "rwatch"); | |
10448 | break; | |
10449 | case bp_access_watchpoint: | |
10450 | fprintf_unfiltered (fp, "awatch"); | |
10451 | break; | |
10452 | default: | |
10453 | internal_error (__FILE__, __LINE__, | |
10454 | _("Invalid hardware watchpoint type.")); | |
10455 | } | |
10456 | ||
3a5c3e22 PA |
10457 | sprintf_vma (tmp, w->hw_wp_mask); |
10458 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10459 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10460 | } |
10461 | ||
10462 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10463 | ||
2060206e | 10464 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10465 | |
10466 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10467 | ||
f2478a7e | 10468 | static bool |
9c06b0b4 TJB |
10469 | is_masked_watchpoint (const struct breakpoint *b) |
10470 | { | |
10471 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10472 | } | |
10473 | ||
53a5351d JM |
10474 | /* accessflag: hw_write: watch write, |
10475 | hw_read: watch read, | |
10476 | hw_access: watch access (read or write) */ | |
c906108c | 10477 | static void |
bbc13ae3 | 10478 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10479 | int just_location, int internal) |
c906108c | 10480 | { |
c1fc2657 | 10481 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10482 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10483 | struct value *result; |
bb9d5f81 | 10484 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10485 | const char *exp_start = NULL; |
10486 | const char *exp_end = NULL; | |
10487 | const char *tok, *end_tok; | |
9c06b0b4 | 10488 | int toklen = -1; |
bbc13ae3 KS |
10489 | const char *cond_start = NULL; |
10490 | const char *cond_end = NULL; | |
c906108c | 10491 | enum bptype bp_type; |
37e4754d | 10492 | int thread = -1; |
0cf6dd15 | 10493 | int pc = 0; |
9c06b0b4 TJB |
10494 | /* Flag to indicate whether we are going to use masks for |
10495 | the hardware watchpoint. */ | |
10496 | int use_mask = 0; | |
10497 | CORE_ADDR mask = 0; | |
c906108c | 10498 | |
37e4754d LM |
10499 | /* Make sure that we actually have parameters to parse. */ |
10500 | if (arg != NULL && arg[0] != '\0') | |
10501 | { | |
bbc13ae3 KS |
10502 | const char *value_start; |
10503 | ||
10504 | exp_end = arg + strlen (arg); | |
37e4754d | 10505 | |
9c06b0b4 TJB |
10506 | /* Look for "parameter value" pairs at the end |
10507 | of the arguments string. */ | |
bbc13ae3 | 10508 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10509 | { |
10510 | /* Skip whitespace at the end of the argument list. */ | |
10511 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10512 | tok--; | |
10513 | ||
10514 | /* Find the beginning of the last token. | |
10515 | This is the value of the parameter. */ | |
10516 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10517 | tok--; | |
10518 | value_start = tok + 1; | |
10519 | ||
10520 | /* Skip whitespace. */ | |
10521 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10522 | tok--; | |
10523 | ||
10524 | end_tok = tok; | |
10525 | ||
10526 | /* Find the beginning of the second to last token. | |
10527 | This is the parameter itself. */ | |
10528 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10529 | tok--; | |
10530 | tok++; | |
10531 | toklen = end_tok - tok + 1; | |
10532 | ||
61012eef | 10533 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10534 | { |
5d5658a1 | 10535 | struct thread_info *thr; |
9c06b0b4 TJB |
10536 | /* At this point we've found a "thread" token, which means |
10537 | the user is trying to set a watchpoint that triggers | |
10538 | only in a specific thread. */ | |
5d5658a1 | 10539 | const char *endp; |
37e4754d | 10540 | |
9c06b0b4 TJB |
10541 | if (thread != -1) |
10542 | error(_("You can specify only one thread.")); | |
37e4754d | 10543 | |
9c06b0b4 | 10544 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10545 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10546 | |
5d5658a1 | 10547 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10548 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10549 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10550 | |
5d5658a1 | 10551 | thread = thr->global_num; |
9c06b0b4 | 10552 | } |
61012eef | 10553 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10554 | { |
10555 | /* We've found a "mask" token, which means the user wants to | |
10556 | create a hardware watchpoint that is going to have the mask | |
10557 | facility. */ | |
10558 | struct value *mask_value, *mark; | |
37e4754d | 10559 | |
9c06b0b4 TJB |
10560 | if (use_mask) |
10561 | error(_("You can specify only one mask.")); | |
37e4754d | 10562 | |
9c06b0b4 | 10563 | use_mask = just_location = 1; |
37e4754d | 10564 | |
9c06b0b4 TJB |
10565 | mark = value_mark (); |
10566 | mask_value = parse_to_comma_and_eval (&value_start); | |
10567 | mask = value_as_address (mask_value); | |
10568 | value_free_to_mark (mark); | |
10569 | } | |
10570 | else | |
10571 | /* We didn't recognize what we found. We should stop here. */ | |
10572 | break; | |
37e4754d | 10573 | |
9c06b0b4 TJB |
10574 | /* Truncate the string and get rid of the "parameter value" pair before |
10575 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10576 | exp_end = tok; |
9c06b0b4 | 10577 | } |
37e4754d | 10578 | } |
bbc13ae3 KS |
10579 | else |
10580 | exp_end = arg; | |
37e4754d | 10581 | |
bbc13ae3 KS |
10582 | /* Parse the rest of the arguments. From here on out, everything |
10583 | is in terms of a newly allocated string instead of the original | |
10584 | ARG. */ | |
81b1e71c TT |
10585 | std::string expression (arg, exp_end - arg); |
10586 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10587 | innermost_block_tracker tracker; |
10588 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10589 | exp_end = arg; |
fa8a61dc TT |
10590 | /* Remove trailing whitespace from the expression before saving it. |
10591 | This makes the eventual display of the expression string a bit | |
10592 | prettier. */ | |
10593 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10594 | --exp_end; | |
10595 | ||
65d79d4b | 10596 | /* Checking if the expression is not constant. */ |
4d01a485 | 10597 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10598 | { |
10599 | int len; | |
10600 | ||
10601 | len = exp_end - exp_start; | |
10602 | while (len > 0 && isspace (exp_start[len - 1])) | |
10603 | len--; | |
10604 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10605 | } | |
10606 | ||
699bd4cf | 10607 | exp_valid_block = tracker.block (); |
b926417a | 10608 | struct value *mark = value_mark (); |
850645cf TT |
10609 | struct value *val_as_value = nullptr; |
10610 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10611 | just_location); | |
06a64a0b | 10612 | |
850645cf | 10613 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10614 | { |
850645cf TT |
10615 | saved_bitpos = value_bitpos (val_as_value); |
10616 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10617 | } |
10618 | ||
850645cf | 10619 | value_ref_ptr val; |
06a64a0b TT |
10620 | if (just_location) |
10621 | { | |
9c06b0b4 TJB |
10622 | int ret; |
10623 | ||
06a64a0b | 10624 | exp_valid_block = NULL; |
850645cf | 10625 | val = release_value (value_addr (result)); |
06a64a0b | 10626 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10627 | |
10628 | if (use_mask) | |
10629 | { | |
850645cf | 10630 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10631 | mask); |
10632 | if (ret == -1) | |
10633 | error (_("This target does not support masked watchpoints.")); | |
10634 | else if (ret == -2) | |
10635 | error (_("Invalid mask or memory region.")); | |
10636 | } | |
06a64a0b | 10637 | } |
850645cf TT |
10638 | else if (val_as_value != NULL) |
10639 | val = release_value (val_as_value); | |
c906108c | 10640 | |
f1735a53 TT |
10641 | tok = skip_spaces (arg); |
10642 | end_tok = skip_to_space (tok); | |
c906108c SS |
10643 | |
10644 | toklen = end_tok - tok; | |
10645 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10646 | { | |
10647 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10648 | innermost_block_tracker if_tracker; |
10649 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10650 | |
10651 | /* The watchpoint expression may not be local, but the condition | |
10652 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10653 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10654 | |
c906108c SS |
10655 | cond_end = tok; |
10656 | } | |
10657 | if (*tok) | |
8a3fe4f8 | 10658 | error (_("Junk at end of command.")); |
c906108c | 10659 | |
441d7c93 PA |
10660 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10661 | ||
10662 | /* Save this because create_internal_breakpoint below invalidates | |
10663 | 'wp_frame'. */ | |
10664 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10665 | |
10666 | /* If the expression is "local", then set up a "watchpoint scope" | |
10667 | breakpoint at the point where we've left the scope of the watchpoint | |
10668 | expression. Create the scope breakpoint before the watchpoint, so | |
10669 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10670 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10671 | { |
441d7c93 PA |
10672 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10673 | ||
10674 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10675 | { |
441d7c93 PA |
10676 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10677 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10678 | ||
edb3359d | 10679 | scope_breakpoint |
441d7c93 | 10680 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10681 | bp_watchpoint_scope, |
10682 | &momentary_breakpoint_ops); | |
d983da9c | 10683 | |
441d7c93 PA |
10684 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10685 | wp_frame = NULL; | |
10686 | ||
edb3359d | 10687 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10688 | |
edb3359d DJ |
10689 | /* Automatically delete the breakpoint when it hits. */ |
10690 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10691 | |
edb3359d | 10692 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10693 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10694 | |
edb3359d | 10695 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10696 | scope_breakpoint->loc->gdbarch = caller_arch; |
10697 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10698 | scope_breakpoint->loc->address |
a6d9a66e UW |
10699 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10700 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10701 | scope_breakpoint->type); |
10702 | } | |
d983da9c DJ |
10703 | } |
10704 | ||
e8369a73 AB |
10705 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10706 | watchpoints here even if hardware watchpoints are turned off, a call | |
10707 | to update_watchpoint later in this function will cause the type to | |
10708 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10709 | ||
10710 | if (accessflag == hw_read) | |
10711 | bp_type = bp_read_watchpoint; | |
10712 | else if (accessflag == hw_access) | |
10713 | bp_type = bp_access_watchpoint; | |
10714 | else | |
10715 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10716 | |
b270e6f9 | 10717 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10718 | |
348d480f | 10719 | if (use_mask) |
b270e6f9 | 10720 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10721 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10722 | else |
b270e6f9 | 10723 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10724 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10725 | w->thread = thread; |
10726 | w->disposition = disp_donttouch; | |
10727 | w->pspace = current_program_space; | |
b22e99fd | 10728 | w->exp = std::move (exp); |
3a5c3e22 PA |
10729 | w->exp_valid_block = exp_valid_block; |
10730 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10731 | if (just_location) |
10732 | { | |
850645cf TT |
10733 | struct type *t = value_type (val.get ()); |
10734 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10735 | |
43cc5389 TT |
10736 | w->exp_string_reparse |
10737 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10738 | |
3a5c3e22 | 10739 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10740 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10741 | } |
10742 | else | |
3a5c3e22 | 10743 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10744 | |
10745 | if (use_mask) | |
10746 | { | |
3a5c3e22 | 10747 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10748 | } |
10749 | else | |
10750 | { | |
3a5c3e22 | 10751 | w->val = val; |
bb9d5f81 PP |
10752 | w->val_bitpos = saved_bitpos; |
10753 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10754 | w->val_valid = true; |
9c06b0b4 | 10755 | } |
77b06cd7 | 10756 | |
c906108c | 10757 | if (cond_start) |
c1fc2657 | 10758 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10759 | else |
c1fc2657 | 10760 | w->cond_string = 0; |
c5aa993b | 10761 | |
441d7c93 | 10762 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10763 | { |
441d7c93 | 10764 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10765 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10766 | } |
c906108c | 10767 | else |
f6bc2008 | 10768 | { |
3a5c3e22 PA |
10769 | w->watchpoint_frame = null_frame_id; |
10770 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10771 | } |
c906108c | 10772 | |
d983da9c | 10773 | if (scope_breakpoint != NULL) |
c906108c | 10774 | { |
d983da9c DJ |
10775 | /* The scope breakpoint is related to the watchpoint. We will |
10776 | need to act on them together. */ | |
c1fc2657 | 10777 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10778 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10779 | } |
d983da9c | 10780 | |
06a64a0b TT |
10781 | if (!just_location) |
10782 | value_free_to_mark (mark); | |
2d134ed3 | 10783 | |
b270e6f9 TT |
10784 | /* Finally update the new watchpoint. This creates the locations |
10785 | that should be inserted. */ | |
10786 | update_watchpoint (w.get (), 1); | |
a9634178 | 10787 | |
b270e6f9 | 10788 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10789 | } |
10790 | ||
e09342b5 | 10791 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10792 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10793 | |
c906108c | 10794 | static int |
a6535de1 | 10795 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10796 | { |
10797 | int found_memory_cnt = 0; | |
10798 | ||
10799 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10800 | if (!can_use_hw_watchpoints) |
c906108c | 10801 | return 0; |
c5aa993b | 10802 | |
a6535de1 TT |
10803 | gdb_assert (!vals.empty ()); |
10804 | struct value *head = vals[0].get (); | |
10805 | ||
5c44784c JM |
10806 | /* Make sure that the value of the expression depends only upon |
10807 | memory contents, and values computed from them within GDB. If we | |
10808 | find any register references or function calls, we can't use a | |
10809 | hardware watchpoint. | |
10810 | ||
10811 | The idea here is that evaluating an expression generates a series | |
10812 | of values, one holding the value of every subexpression. (The | |
10813 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10814 | a*b+c.) GDB's values hold almost enough information to establish | |
10815 | the criteria given above --- they identify memory lvalues, | |
10816 | register lvalues, computed values, etcetera. So we can evaluate | |
10817 | the expression, and then scan the chain of values that leaves | |
10818 | behind to decide whether we can detect any possible change to the | |
10819 | expression's final value using only hardware watchpoints. | |
10820 | ||
10821 | However, I don't think that the values returned by inferior | |
10822 | function calls are special in any way. So this function may not | |
10823 | notice that an expression involving an inferior function call | |
10824 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10825 | for (const value_ref_ptr &iter : vals) |
c906108c | 10826 | { |
a6535de1 TT |
10827 | struct value *v = iter.get (); |
10828 | ||
5c44784c | 10829 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10830 | { |
8464be76 DJ |
10831 | if (v != head && value_lazy (v)) |
10832 | /* A lazy memory lvalue in the chain is one that GDB never | |
10833 | needed to fetch; we either just used its address (e.g., | |
10834 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10835 | in `a,b'). This doesn't apply to HEAD; if that is | |
10836 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10837 | ; |
53a5351d | 10838 | else |
5c44784c JM |
10839 | { |
10840 | /* Ahh, memory we actually used! Check if we can cover | |
10841 | it with hardware watchpoints. */ | |
df407dfe | 10842 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10843 | |
10844 | /* We only watch structs and arrays if user asked for it | |
10845 | explicitly, never if they just happen to appear in a | |
10846 | middle of some value chain. */ | |
10847 | if (v == head | |
10848 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10849 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10850 | { | |
42ae5230 | 10851 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10852 | int len; |
10853 | int num_regs; | |
10854 | ||
a9634178 | 10855 | len = (target_exact_watchpoints |
e09342b5 TJB |
10856 | && is_scalar_type_recursive (vtype))? |
10857 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10858 | |
e09342b5 TJB |
10859 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10860 | if (!num_regs) | |
2e70b7b9 MS |
10861 | return 0; |
10862 | else | |
e09342b5 | 10863 | found_memory_cnt += num_regs; |
2e70b7b9 | 10864 | } |
5c44784c | 10865 | } |
c5aa993b | 10866 | } |
5086187c AC |
10867 | else if (VALUE_LVAL (v) != not_lval |
10868 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10869 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10870 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10871 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10872 | } |
10873 | ||
10874 | /* The expression itself looks suitable for using a hardware | |
10875 | watchpoint, but give the target machine a chance to reject it. */ | |
10876 | return found_memory_cnt; | |
10877 | } | |
10878 | ||
8b93c638 | 10879 | void |
f2fc3015 | 10880 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10881 | { |
84f4c1fe | 10882 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10883 | } |
10884 | ||
06a64a0b TT |
10885 | /* A helper function that looks for the "-location" argument and then |
10886 | calls watch_command_1. */ | |
10887 | ||
10888 | static void | |
0b39b52e | 10889 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10890 | { |
10891 | int just_location = 0; | |
10892 | ||
10893 | if (arg | |
10894 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10895 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 10896 | just_location = 1; |
06a64a0b | 10897 | |
84f4c1fe | 10898 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10899 | } |
8926118c | 10900 | |
c5aa993b | 10901 | static void |
0b39b52e | 10902 | watch_command (const char *arg, int from_tty) |
c906108c | 10903 | { |
06a64a0b | 10904 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10905 | } |
10906 | ||
8b93c638 | 10907 | void |
f2fc3015 | 10908 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10909 | { |
84f4c1fe | 10910 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10911 | } |
8926118c | 10912 | |
c5aa993b | 10913 | static void |
0b39b52e | 10914 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10915 | { |
06a64a0b | 10916 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10917 | } |
10918 | ||
8b93c638 | 10919 | void |
f2fc3015 | 10920 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10921 | { |
84f4c1fe | 10922 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10923 | } |
8926118c | 10924 | |
c5aa993b | 10925 | static void |
0b39b52e | 10926 | awatch_command (const char *arg, int from_tty) |
c906108c | 10927 | { |
06a64a0b | 10928 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10929 | } |
c906108c | 10930 | \f |
c5aa993b | 10931 | |
cfc31633 PA |
10932 | /* Data for the FSM that manages the until(location)/advance commands |
10933 | in infcmd.c. Here because it uses the mechanisms of | |
10934 | breakpoints. */ | |
c906108c | 10935 | |
46e3ed7f | 10936 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10937 | { |
46e3ed7f | 10938 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10939 | int thread; |
10940 | ||
10941 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10942 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10943 | |
10944 | /* Breakpoint set at the return address in the caller frame. May be | |
10945 | NULL. */ | |
46e3ed7f | 10946 | breakpoint_up caller_breakpoint; |
cfc31633 | 10947 | |
46e3ed7f TT |
10948 | until_break_fsm (struct interp *cmd_interp, int thread, |
10949 | breakpoint_up &&location_breakpoint, | |
10950 | breakpoint_up &&caller_breakpoint) | |
10951 | : thread_fsm (cmd_interp), | |
10952 | thread (thread), | |
10953 | location_breakpoint (std::move (location_breakpoint)), | |
10954 | caller_breakpoint (std::move (caller_breakpoint)) | |
10955 | { | |
10956 | } | |
cfc31633 | 10957 | |
46e3ed7f TT |
10958 | void clean_up (struct thread_info *thread) override; |
10959 | bool should_stop (struct thread_info *thread) override; | |
10960 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10961 | }; |
10962 | ||
cfc31633 PA |
10963 | /* Implementation of the 'should_stop' FSM method for the |
10964 | until(location)/advance commands. */ | |
10965 | ||
46e3ed7f TT |
10966 | bool |
10967 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10968 | { |
cfc31633 | 10969 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10970 | location_breakpoint.get ()) != NULL |
10971 | || (caller_breakpoint != NULL | |
cfc31633 | 10972 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10973 | caller_breakpoint.get ()) != NULL)) |
10974 | set_finished (); | |
cfc31633 | 10975 | |
46e3ed7f | 10976 | return true; |
cfc31633 PA |
10977 | } |
10978 | ||
10979 | /* Implementation of the 'clean_up' FSM method for the | |
10980 | until(location)/advance commands. */ | |
10981 | ||
46e3ed7f TT |
10982 | void |
10983 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10984 | { |
cfc31633 | 10985 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10986 | location_breakpoint.reset (); |
10987 | caller_breakpoint.reset (); | |
10988 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10989 | } |
10990 | ||
10991 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10992 | until(location)/advance commands. */ | |
10993 | ||
46e3ed7f TT |
10994 | enum async_reply_reason |
10995 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10996 | { |
10997 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10998 | } |
10999 | ||
c906108c | 11000 | void |
f2fc3015 | 11001 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11002 | { |
8556afb4 PA |
11003 | struct frame_info *frame; |
11004 | struct gdbarch *frame_gdbarch; | |
11005 | struct frame_id stack_frame_id; | |
11006 | struct frame_id caller_frame_id; | |
186c406b TT |
11007 | int thread; |
11008 | struct thread_info *tp; | |
c906108c | 11009 | |
70509625 | 11010 | clear_proceed_status (0); |
c906108c SS |
11011 | |
11012 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11013 | this function. */ |
c5aa993b | 11014 | |
ffc2605c | 11015 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11016 | |
6c5b2ebe PA |
11017 | std::vector<symtab_and_line> sals |
11018 | = (last_displayed_sal_is_valid () | |
11019 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11020 | get_last_displayed_symtab (), | |
11021 | get_last_displayed_line ()) | |
11022 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11023 | NULL, NULL, 0)); |
c5aa993b | 11024 | |
6c5b2ebe | 11025 | if (sals.size () != 1) |
8a3fe4f8 | 11026 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11027 | |
6c5b2ebe | 11028 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11029 | |
c906108c | 11030 | if (*arg) |
8a3fe4f8 | 11031 | error (_("Junk at end of arguments.")); |
c5aa993b | 11032 | |
c906108c | 11033 | resolve_sal_pc (&sal); |
c5aa993b | 11034 | |
186c406b | 11035 | tp = inferior_thread (); |
5d5658a1 | 11036 | thread = tp->global_num; |
186c406b | 11037 | |
8556afb4 PA |
11038 | /* Note linespec handling above invalidates the frame chain. |
11039 | Installing a breakpoint also invalidates the frame chain (as it | |
11040 | may need to switch threads), so do any frame handling before | |
11041 | that. */ | |
11042 | ||
11043 | frame = get_selected_frame (NULL); | |
11044 | frame_gdbarch = get_frame_arch (frame); | |
11045 | stack_frame_id = get_stack_frame_id (frame); | |
11046 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11047 | |
ae66c1fc EZ |
11048 | /* Keep within the current frame, or in frames called by the current |
11049 | one. */ | |
edb3359d | 11050 | |
454dafbd | 11051 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11052 | |
11053 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11054 | ||
883bc8d1 | 11055 | if (frame_id_p (caller_frame_id)) |
c906108c | 11056 | { |
883bc8d1 | 11057 | struct symtab_and_line sal2; |
cfc31633 | 11058 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11059 | |
11060 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11061 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11062 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11063 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11064 | sal2, | |
11065 | caller_frame_id, | |
11066 | bp_until); | |
186c406b | 11067 | |
883bc8d1 | 11068 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11069 | lj_deleter.emplace (thread); |
c906108c | 11070 | } |
c5aa993b | 11071 | |
c70a6932 JK |
11072 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11073 | frame = NULL; | |
11074 | ||
454dafbd | 11075 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11076 | if (anywhere) |
11077 | /* If the user told us to continue until a specified location, | |
11078 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11079 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11080 | null_frame_id, bp_until); | |
883bc8d1 PA |
11081 | else |
11082 | /* Otherwise, specify the selected frame, because we want to stop | |
11083 | only at the very same frame. */ | |
cfc31633 PA |
11084 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11085 | stack_frame_id, bp_until); | |
883bc8d1 | 11086 | |
46e3ed7f TT |
11087 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11088 | std::move (location_breakpoint), | |
11089 | std::move (caller_breakpoint)); | |
f107f563 | 11090 | |
5419bdae TT |
11091 | if (lj_deleter) |
11092 | lj_deleter->release (); | |
f107f563 | 11093 | |
cfc31633 | 11094 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11095 | } |
ae66c1fc | 11096 | |
c906108c SS |
11097 | /* This function attempts to parse an optional "if <cond>" clause |
11098 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11099 | |
c906108c SS |
11100 | Else, it returns a pointer to the condition string. (It does not |
11101 | attempt to evaluate the string against a particular block.) And, | |
11102 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11103 | if clause in the arg string. */ |
53a5351d | 11104 | |
63160a43 PA |
11105 | const char * |
11106 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11107 | { |
63160a43 | 11108 | const char *cond_string; |
c5aa993b JM |
11109 | |
11110 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11111 | return NULL; |
c5aa993b | 11112 | |
4a64f543 | 11113 | /* Skip the "if" keyword. */ |
c906108c | 11114 | (*arg) += 2; |
c5aa993b | 11115 | |
c906108c | 11116 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11117 | condition string. */ |
f1735a53 | 11118 | *arg = skip_spaces (*arg); |
c906108c | 11119 | cond_string = *arg; |
c5aa993b | 11120 | |
4a64f543 MS |
11121 | /* Assume that the condition occupies the remainder of the arg |
11122 | string. */ | |
c906108c | 11123 | (*arg) += strlen (cond_string); |
c5aa993b | 11124 | |
c906108c SS |
11125 | return cond_string; |
11126 | } | |
c5aa993b | 11127 | |
c906108c SS |
11128 | /* Commands to deal with catching events, such as signals, exceptions, |
11129 | process start/exit, etc. */ | |
c5aa993b JM |
11130 | |
11131 | typedef enum | |
11132 | { | |
44feb3ce TT |
11133 | catch_fork_temporary, catch_vfork_temporary, |
11134 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11135 | } |
11136 | catch_fork_kind; | |
11137 | ||
c906108c | 11138 | static void |
eb4c3f4a | 11139 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11140 | struct cmd_list_element *command) |
c906108c | 11141 | { |
a6d9a66e | 11142 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11143 | const char *cond_string = NULL; |
44feb3ce TT |
11144 | catch_fork_kind fork_kind; |
11145 | int tempflag; | |
11146 | ||
11147 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11148 | tempflag = (fork_kind == catch_fork_temporary | |
11149 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11150 | |
44feb3ce TT |
11151 | if (!arg) |
11152 | arg = ""; | |
f1735a53 | 11153 | arg = skip_spaces (arg); |
c5aa993b | 11154 | |
c906108c | 11155 | /* The allowed syntax is: |
c5aa993b JM |
11156 | catch [v]fork |
11157 | catch [v]fork if <cond> | |
11158 | ||
4a64f543 | 11159 | First, check if there's an if clause. */ |
c906108c | 11160 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11161 | |
c906108c | 11162 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11163 | error (_("Junk at end of arguments.")); |
c5aa993b | 11164 | |
c906108c | 11165 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11166 | and enable reporting of such events. */ |
c5aa993b JM |
11167 | switch (fork_kind) |
11168 | { | |
44feb3ce TT |
11169 | case catch_fork_temporary: |
11170 | case catch_fork_permanent: | |
a6d9a66e | 11171 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11172 | &catch_fork_breakpoint_ops); |
c906108c | 11173 | break; |
44feb3ce TT |
11174 | case catch_vfork_temporary: |
11175 | case catch_vfork_permanent: | |
a6d9a66e | 11176 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11177 | &catch_vfork_breakpoint_ops); |
c906108c | 11178 | break; |
c5aa993b | 11179 | default: |
8a3fe4f8 | 11180 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11181 | break; |
c5aa993b | 11182 | } |
c906108c SS |
11183 | } |
11184 | ||
11185 | static void | |
eb4c3f4a | 11186 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11187 | struct cmd_list_element *command) |
c906108c | 11188 | { |
a6d9a66e | 11189 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11190 | int tempflag; |
63160a43 | 11191 | const char *cond_string = NULL; |
c906108c | 11192 | |
44feb3ce TT |
11193 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11194 | ||
11195 | if (!arg) | |
11196 | arg = ""; | |
f1735a53 | 11197 | arg = skip_spaces (arg); |
c906108c SS |
11198 | |
11199 | /* The allowed syntax is: | |
c5aa993b JM |
11200 | catch exec |
11201 | catch exec if <cond> | |
c906108c | 11202 | |
4a64f543 | 11203 | First, check if there's an if clause. */ |
c906108c SS |
11204 | cond_string = ep_parse_optional_if_clause (&arg); |
11205 | ||
11206 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11207 | error (_("Junk at end of arguments.")); |
c906108c | 11208 | |
b270e6f9 TT |
11209 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11210 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11211 | &catch_exec_breakpoint_ops); |
11212 | c->exec_pathname = NULL; | |
11213 | ||
b270e6f9 | 11214 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11215 | } |
c5aa993b | 11216 | |
9ac4176b | 11217 | void |
28010a5d PA |
11218 | init_ada_exception_breakpoint (struct breakpoint *b, |
11219 | struct gdbarch *gdbarch, | |
11220 | struct symtab_and_line sal, | |
f2fc3015 | 11221 | const char *addr_string, |
c0a91b2b | 11222 | const struct breakpoint_ops *ops, |
28010a5d | 11223 | int tempflag, |
349774ef | 11224 | int enabled, |
28010a5d | 11225 | int from_tty) |
f7f9143b | 11226 | { |
f7f9143b JB |
11227 | if (from_tty) |
11228 | { | |
5af949e3 UW |
11229 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11230 | if (!loc_gdbarch) | |
11231 | loc_gdbarch = gdbarch; | |
11232 | ||
6c95b8df PA |
11233 | describe_other_breakpoints (loc_gdbarch, |
11234 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11235 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11236 | version for exception catchpoints, because two catchpoints | |
11237 | used for different exception names will use the same address. | |
11238 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11239 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11240 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11241 | the user what type of catchpoint it is. The above is good |
11242 | enough for now, though. */ | |
11243 | } | |
11244 | ||
f06f1252 | 11245 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11246 | |
349774ef | 11247 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11248 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11249 | b->location = string_to_event_location (&addr_string, |
11250 | language_def (language_ada)); | |
f7f9143b | 11251 | b->language = language_ada; |
f7f9143b JB |
11252 | } |
11253 | ||
c906108c | 11254 | static void |
981a3fb3 | 11255 | catch_command (const char *arg, int from_tty) |
c906108c | 11256 | { |
44feb3ce | 11257 | error (_("Catch requires an event name.")); |
c906108c SS |
11258 | } |
11259 | \f | |
11260 | ||
11261 | static void | |
981a3fb3 | 11262 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11263 | { |
44feb3ce | 11264 | error (_("Catch requires an event name.")); |
c906108c SS |
11265 | } |
11266 | ||
81b1e71c | 11267 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11268 | |
11269 | static int | |
81b1e71c | 11270 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11271 | { |
81b1e71c TT |
11272 | uintptr_t ua = (uintptr_t) a; |
11273 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11274 | |
81b1e71c | 11275 | if (a->number < b->number) |
8a2c437b | 11276 | return -1; |
81b1e71c | 11277 | else if (a->number > b->number) |
8a2c437b TT |
11278 | return 1; |
11279 | ||
11280 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11281 | the number 0. */ | |
11282 | if (ua < ub) | |
11283 | return -1; | |
94b0e70d | 11284 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11285 | } |
11286 | ||
80f8a6eb | 11287 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11288 | |
11289 | static void | |
0b39b52e | 11290 | clear_command (const char *arg, int from_tty) |
c906108c | 11291 | { |
81b1e71c | 11292 | struct breakpoint *b; |
c906108c | 11293 | int default_match; |
c906108c | 11294 | |
6c5b2ebe PA |
11295 | std::vector<symtab_and_line> decoded_sals; |
11296 | symtab_and_line last_sal; | |
11297 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11298 | if (arg) |
11299 | { | |
6c5b2ebe PA |
11300 | decoded_sals |
11301 | = decode_line_with_current_source (arg, | |
11302 | (DECODE_LINE_FUNFIRSTLINE | |
11303 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11304 | default_match = 0; |
6c5b2ebe | 11305 | sals = decoded_sals; |
c906108c SS |
11306 | } |
11307 | else | |
11308 | { | |
1bfeeb0f JL |
11309 | /* Set sal's line, symtab, pc, and pspace to the values |
11310 | corresponding to the last call to print_frame_info. If the | |
11311 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11312 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11313 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11314 | error (_("No source file specified.")); |
c906108c | 11315 | |
c906108c | 11316 | default_match = 1; |
6c5b2ebe | 11317 | sals = last_sal; |
c906108c SS |
11318 | } |
11319 | ||
4a64f543 MS |
11320 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11321 | seems, because all existing breakpoints typically have both | |
11322 | file/line and pc set. So, if clear is given file/line, we can | |
11323 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11324 | |
11325 | We only support clearing given the address explicitly | |
11326 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11327 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11328 | due to optimization, all in one block. |
4a64f543 MS |
11329 | |
11330 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11331 | PC corresponding to the same file:line, the breakpoint won't |
11332 | be cleared. We probably can still clear the breakpoint, but | |
11333 | since the other PC value is never presented to user, user | |
11334 | can only find it by guessing, and it does not seem important | |
11335 | to support that. */ | |
11336 | ||
4a64f543 MS |
11337 | /* For each line spec given, delete bps which correspond to it. Do |
11338 | it in two passes, solely to preserve the current behavior that | |
11339 | from_tty is forced true if we delete more than one | |
11340 | breakpoint. */ | |
c906108c | 11341 | |
81b1e71c | 11342 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11343 | for (const auto &sal : sals) |
c906108c | 11344 | { |
05cba821 JK |
11345 | const char *sal_fullname; |
11346 | ||
c906108c | 11347 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11348 | If line given (pc == 0), clear all bpts on specified line. |
11349 | If defaulting, clear all bpts on default line | |
c906108c | 11350 | or at default pc. |
c5aa993b JM |
11351 | |
11352 | defaulting sal.pc != 0 tests to do | |
11353 | ||
11354 | 0 1 pc | |
11355 | 1 1 pc _and_ line | |
11356 | 0 0 line | |
11357 | 1 0 <can't happen> */ | |
c906108c | 11358 | |
05cba821 JK |
11359 | sal_fullname = (sal.symtab == NULL |
11360 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11361 | |
4a64f543 | 11362 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11363 | ALL_BREAKPOINTS (b) |
c5aa993b | 11364 | { |
0d381245 | 11365 | int match = 0; |
4a64f543 | 11366 | /* Are we going to delete b? */ |
cc60f2e3 | 11367 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11368 | { |
11369 | struct bp_location *loc = b->loc; | |
11370 | for (; loc; loc = loc->next) | |
11371 | { | |
f8eba3c6 TT |
11372 | /* If the user specified file:line, don't allow a PC |
11373 | match. This matches historical gdb behavior. */ | |
11374 | int pc_match = (!sal.explicit_line | |
11375 | && sal.pc | |
11376 | && (loc->pspace == sal.pspace) | |
11377 | && (loc->address == sal.pc) | |
11378 | && (!section_is_overlay (loc->section) | |
11379 | || loc->section == sal.section)); | |
4aac40c8 TT |
11380 | int line_match = 0; |
11381 | ||
11382 | if ((default_match || sal.explicit_line) | |
2f202fde | 11383 | && loc->symtab != NULL |
05cba821 | 11384 | && sal_fullname != NULL |
4aac40c8 | 11385 | && sal.pspace == loc->pspace |
05cba821 JK |
11386 | && loc->line_number == sal.line |
11387 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11388 | sal_fullname) == 0) | |
11389 | line_match = 1; | |
4aac40c8 | 11390 | |
0d381245 VP |
11391 | if (pc_match || line_match) |
11392 | { | |
11393 | match = 1; | |
11394 | break; | |
11395 | } | |
11396 | } | |
11397 | } | |
11398 | ||
11399 | if (match) | |
81b1e71c | 11400 | found.push_back (b); |
c906108c | 11401 | } |
80f8a6eb | 11402 | } |
8a2c437b | 11403 | |
80f8a6eb | 11404 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11405 | if (found.empty ()) |
80f8a6eb MS |
11406 | { |
11407 | if (arg) | |
8a3fe4f8 | 11408 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11409 | else |
8a3fe4f8 | 11410 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11411 | } |
c906108c | 11412 | |
8a2c437b | 11413 | /* Remove duplicates from the vec. */ |
81b1e71c | 11414 | std::sort (found.begin (), found.end (), |
b926417a | 11415 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11416 | { |
b926417a | 11417 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11418 | }); |
11419 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11420 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11421 | { |
b926417a | 11422 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11423 | }), |
11424 | found.end ()); | |
8a2c437b | 11425 | |
81b1e71c | 11426 | if (found.size () > 1) |
4a64f543 | 11427 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11428 | if (from_tty) |
a3f17187 | 11429 | { |
81b1e71c | 11430 | if (found.size () == 1) |
a3f17187 AC |
11431 | printf_unfiltered (_("Deleted breakpoint ")); |
11432 | else | |
11433 | printf_unfiltered (_("Deleted breakpoints ")); | |
11434 | } | |
d6e956e5 | 11435 | |
81b1e71c | 11436 | for (breakpoint *iter : found) |
80f8a6eb | 11437 | { |
c5aa993b | 11438 | if (from_tty) |
81b1e71c TT |
11439 | printf_unfiltered ("%d ", iter->number); |
11440 | delete_breakpoint (iter); | |
c906108c | 11441 | } |
80f8a6eb MS |
11442 | if (from_tty) |
11443 | putchar_unfiltered ('\n'); | |
c906108c SS |
11444 | } |
11445 | \f | |
11446 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11447 | all breakpoints that are marked for deletion, whether hit or not. | |
11448 | This is called after any breakpoint is hit, or after errors. */ | |
11449 | ||
11450 | void | |
fba45db2 | 11451 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11452 | { |
35df4500 | 11453 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11454 | |
11455 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11456 | if (bs->breakpoint_at |
11457 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11458 | && bs->stop) |
f431efe5 | 11459 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11460 | |
35df4500 | 11461 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11462 | { |
b5de0fa7 | 11463 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11464 | delete_breakpoint (b); |
11465 | } | |
c906108c SS |
11466 | } |
11467 | ||
4a64f543 | 11468 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11469 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11470 | bl_address_is_meaningful says), secondarily by ordering first |
11471 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11472 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11473 | |
11474 | static int | |
39ef2f62 | 11475 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11476 | { |
876fa593 | 11477 | if (a->address != b->address) |
39ef2f62 | 11478 | return a->address < b->address; |
876fa593 | 11479 | |
dea2aa5f LM |
11480 | /* Sort locations at the same address by their pspace number, keeping |
11481 | locations of the same inferior (in a multi-inferior environment) | |
11482 | grouped. */ | |
11483 | ||
11484 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11485 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11486 | |
876fa593 | 11487 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11488 | if (a->permanent != b->permanent) |
39ef2f62 | 11489 | return a->permanent > b->permanent; |
876fa593 | 11490 | |
c56a97f9 JK |
11491 | /* Make the internal GDB representation stable across GDB runs |
11492 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11493 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11494 | |
11495 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11496 | return a->owner->number < b->owner->number; |
876fa593 | 11497 | |
39ef2f62 | 11498 | return a < b; |
876fa593 JK |
11499 | } |
11500 | ||
f5336ca5 PA |
11501 | /* Set bp_locations_placed_address_before_address_max and |
11502 | bp_locations_shadow_len_after_address_max according to the current | |
11503 | content of the bp_locations array. */ | |
f7545552 TT |
11504 | |
11505 | static void | |
f5336ca5 | 11506 | bp_locations_target_extensions_update (void) |
f7545552 | 11507 | { |
876fa593 JK |
11508 | struct bp_location *bl, **blp_tmp; |
11509 | ||
f5336ca5 PA |
11510 | bp_locations_placed_address_before_address_max = 0; |
11511 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11512 | |
11513 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11514 | { | |
11515 | CORE_ADDR start, end, addr; | |
11516 | ||
11517 | if (!bp_location_has_shadow (bl)) | |
11518 | continue; | |
11519 | ||
11520 | start = bl->target_info.placed_address; | |
11521 | end = start + bl->target_info.shadow_len; | |
11522 | ||
11523 | gdb_assert (bl->address >= start); | |
11524 | addr = bl->address - start; | |
f5336ca5 PA |
11525 | if (addr > bp_locations_placed_address_before_address_max) |
11526 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11527 | |
11528 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11529 | ||
11530 | gdb_assert (bl->address < end); | |
11531 | addr = end - bl->address; | |
f5336ca5 PA |
11532 | if (addr > bp_locations_shadow_len_after_address_max) |
11533 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11534 | } |
f7545552 TT |
11535 | } |
11536 | ||
1e4d1764 YQ |
11537 | /* Download tracepoint locations if they haven't been. */ |
11538 | ||
11539 | static void | |
11540 | download_tracepoint_locations (void) | |
11541 | { | |
7ed2c994 | 11542 | struct breakpoint *b; |
dd2e65cc | 11543 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11544 | |
5ed8105e | 11545 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11546 | |
7ed2c994 | 11547 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11548 | { |
7ed2c994 | 11549 | struct bp_location *bl; |
1e4d1764 | 11550 | struct tracepoint *t; |
f2a8bc8a | 11551 | int bp_location_downloaded = 0; |
1e4d1764 | 11552 | |
7ed2c994 | 11553 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11554 | ? !may_insert_fast_tracepoints |
11555 | : !may_insert_tracepoints)) | |
11556 | continue; | |
11557 | ||
dd2e65cc YQ |
11558 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11559 | { | |
11560 | if (target_can_download_tracepoint ()) | |
11561 | can_download_tracepoint = TRIBOOL_TRUE; | |
11562 | else | |
11563 | can_download_tracepoint = TRIBOOL_FALSE; | |
11564 | } | |
11565 | ||
11566 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11567 | break; | |
11568 | ||
7ed2c994 YQ |
11569 | for (bl = b->loc; bl; bl = bl->next) |
11570 | { | |
11571 | /* In tracepoint, locations are _never_ duplicated, so | |
11572 | should_be_inserted is equivalent to | |
11573 | unduplicated_should_be_inserted. */ | |
11574 | if (!should_be_inserted (bl) || bl->inserted) | |
11575 | continue; | |
1e4d1764 | 11576 | |
7ed2c994 | 11577 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11578 | |
7ed2c994 | 11579 | target_download_tracepoint (bl); |
1e4d1764 | 11580 | |
7ed2c994 | 11581 | bl->inserted = 1; |
f2a8bc8a | 11582 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11583 | } |
11584 | t = (struct tracepoint *) b; | |
11585 | t->number_on_target = b->number; | |
f2a8bc8a | 11586 | if (bp_location_downloaded) |
76727919 | 11587 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11588 | } |
1e4d1764 YQ |
11589 | } |
11590 | ||
934709f0 PW |
11591 | /* Swap the insertion/duplication state between two locations. */ |
11592 | ||
11593 | static void | |
11594 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11595 | { | |
11596 | const int left_inserted = left->inserted; | |
11597 | const int left_duplicate = left->duplicate; | |
b775012e | 11598 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11599 | const struct bp_target_info left_target_info = left->target_info; |
11600 | ||
1e4d1764 YQ |
11601 | /* Locations of tracepoints can never be duplicated. */ |
11602 | if (is_tracepoint (left->owner)) | |
11603 | gdb_assert (!left->duplicate); | |
11604 | if (is_tracepoint (right->owner)) | |
11605 | gdb_assert (!right->duplicate); | |
11606 | ||
934709f0 PW |
11607 | left->inserted = right->inserted; |
11608 | left->duplicate = right->duplicate; | |
b775012e | 11609 | left->needs_update = right->needs_update; |
934709f0 PW |
11610 | left->target_info = right->target_info; |
11611 | right->inserted = left_inserted; | |
11612 | right->duplicate = left_duplicate; | |
b775012e | 11613 | right->needs_update = left_needs_update; |
934709f0 PW |
11614 | right->target_info = left_target_info; |
11615 | } | |
11616 | ||
b775012e LM |
11617 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11618 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11619 | conditions on the target's side. Such conditions need to be updated on | |
11620 | the target. */ | |
11621 | ||
11622 | static void | |
11623 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11624 | { | |
11625 | struct bp_location **locp = NULL, **loc2p; | |
11626 | struct bp_location *loc; | |
11627 | CORE_ADDR address = 0; | |
11628 | int pspace_num; | |
11629 | ||
11630 | address = bl->address; | |
11631 | pspace_num = bl->pspace->num; | |
11632 | ||
11633 | /* This is only meaningful if the target is | |
11634 | evaluating conditions and if the user has | |
11635 | opted for condition evaluation on the target's | |
11636 | side. */ | |
11637 | if (gdb_evaluates_breakpoint_condition_p () | |
11638 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11639 | return; | |
11640 | ||
11641 | /* Flag all breakpoint locations with this address and | |
11642 | the same program space as the location | |
11643 | as "its condition has changed". We need to | |
11644 | update the conditions on the target's side. */ | |
11645 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11646 | { | |
11647 | loc = *loc2p; | |
11648 | ||
11649 | if (!is_breakpoint (loc->owner) | |
11650 | || pspace_num != loc->pspace->num) | |
11651 | continue; | |
11652 | ||
11653 | /* Flag the location appropriately. We use a different state to | |
11654 | let everyone know that we already updated the set of locations | |
11655 | with addr bl->address and program space bl->pspace. This is so | |
11656 | we don't have to keep calling these functions just to mark locations | |
11657 | that have already been marked. */ | |
11658 | loc->condition_changed = condition_updated; | |
11659 | ||
11660 | /* Free the agent expression bytecode as well. We will compute | |
11661 | it later on. */ | |
833177a4 | 11662 | loc->cond_bytecode.reset (); |
b775012e LM |
11663 | } |
11664 | } | |
44702360 PA |
11665 | /* Called whether new breakpoints are created, or existing breakpoints |
11666 | deleted, to update the global location list and recompute which | |
11667 | locations are duplicate of which. | |
b775012e | 11668 | |
04086b45 PA |
11669 | The INSERT_MODE flag determines whether locations may not, may, or |
11670 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11671 | info. */ | |
b60e7edf | 11672 | |
0d381245 | 11673 | static void |
44702360 | 11674 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11675 | { |
74960c60 | 11676 | struct breakpoint *b; |
876fa593 | 11677 | struct bp_location **locp, *loc; |
b775012e LM |
11678 | /* Last breakpoint location address that was marked for update. */ |
11679 | CORE_ADDR last_addr = 0; | |
11680 | /* Last breakpoint location program space that was marked for update. */ | |
11681 | int last_pspace_num = -1; | |
f7545552 | 11682 | |
2d134ed3 PA |
11683 | /* Used in the duplicates detection below. When iterating over all |
11684 | bp_locations, points to the first bp_location of a given address. | |
11685 | Breakpoints and watchpoints of different types are never | |
11686 | duplicates of each other. Keep one pointer for each type of | |
11687 | breakpoint/watchpoint, so we only need to loop over all locations | |
11688 | once. */ | |
11689 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11690 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11691 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11692 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11693 | |
f5336ca5 PA |
11694 | /* Saved former bp_locations array which we compare against the newly |
11695 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11696 | struct bp_location **old_locp; |
f5336ca5 | 11697 | unsigned old_locations_count; |
81b1e71c | 11698 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11699 | |
f5336ca5 PA |
11700 | old_locations_count = bp_locations_count; |
11701 | bp_locations = NULL; | |
11702 | bp_locations_count = 0; | |
0d381245 | 11703 | |
74960c60 | 11704 | ALL_BREAKPOINTS (b) |
876fa593 | 11705 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11706 | bp_locations_count++; |
876fa593 | 11707 | |
f5336ca5 PA |
11708 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11709 | locp = bp_locations; | |
876fa593 JK |
11710 | ALL_BREAKPOINTS (b) |
11711 | for (loc = b->loc; loc; loc = loc->next) | |
11712 | *locp++ = loc; | |
39ef2f62 CB |
11713 | std::sort (bp_locations, bp_locations + bp_locations_count, |
11714 | bp_location_is_less_than); | |
876fa593 | 11715 | |
f5336ca5 | 11716 | bp_locations_target_extensions_update (); |
74960c60 | 11717 | |
4a64f543 MS |
11718 | /* Identify bp_location instances that are no longer present in the |
11719 | new list, and therefore should be freed. Note that it's not | |
11720 | necessary that those locations should be removed from inferior -- | |
11721 | if there's another location at the same address (previously | |
11722 | marked as duplicate), we don't need to remove/insert the | |
11723 | location. | |
876fa593 | 11724 | |
4a64f543 MS |
11725 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11726 | and former bp_location array state respectively. */ | |
876fa593 | 11727 | |
f5336ca5 | 11728 | locp = bp_locations; |
81b1e71c TT |
11729 | for (old_locp = old_locations.get (); |
11730 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11731 | old_locp++) |
74960c60 | 11732 | { |
876fa593 | 11733 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11734 | struct bp_location **loc2p; |
876fa593 | 11735 | |
e5dd4106 | 11736 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11737 | not, we have to free it. */ |
c7d46a38 | 11738 | int found_object = 0; |
20874c92 VP |
11739 | /* Tells if the location should remain inserted in the target. */ |
11740 | int keep_in_target = 0; | |
11741 | int removed = 0; | |
876fa593 | 11742 | |
4a64f543 MS |
11743 | /* Skip LOCP entries which will definitely never be needed. |
11744 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11745 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11746 | && (*locp)->address < old_loc->address) |
876fa593 | 11747 | locp++; |
c7d46a38 PA |
11748 | |
11749 | for (loc2p = locp; | |
f5336ca5 | 11750 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11751 | && (*loc2p)->address == old_loc->address); |
11752 | loc2p++) | |
11753 | { | |
b775012e LM |
11754 | /* Check if this is a new/duplicated location or a duplicated |
11755 | location that had its condition modified. If so, we want to send | |
11756 | its condition to the target if evaluation of conditions is taking | |
11757 | place there. */ | |
11758 | if ((*loc2p)->condition_changed == condition_modified | |
11759 | && (last_addr != old_loc->address | |
11760 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11761 | { |
b775012e LM |
11762 | force_breakpoint_reinsertion (*loc2p); |
11763 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11764 | } |
b775012e LM |
11765 | |
11766 | if (*loc2p == old_loc) | |
11767 | found_object = 1; | |
c7d46a38 | 11768 | } |
74960c60 | 11769 | |
b775012e LM |
11770 | /* We have already handled this address, update it so that we don't |
11771 | have to go through updates again. */ | |
11772 | last_addr = old_loc->address; | |
11773 | ||
11774 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11775 | if (!found_object) | |
11776 | force_breakpoint_reinsertion (old_loc); | |
11777 | ||
4a64f543 MS |
11778 | /* If this location is no longer present, and inserted, look if |
11779 | there's maybe a new location at the same address. If so, | |
11780 | mark that one inserted, and don't remove this one. This is | |
11781 | needed so that we don't have a time window where a breakpoint | |
11782 | at certain location is not inserted. */ | |
74960c60 | 11783 | |
876fa593 | 11784 | if (old_loc->inserted) |
0d381245 | 11785 | { |
4a64f543 MS |
11786 | /* If the location is inserted now, we might have to remove |
11787 | it. */ | |
74960c60 | 11788 | |
876fa593 | 11789 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11790 | { |
4a64f543 MS |
11791 | /* The location is still present in the location list, |
11792 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11793 | keep_in_target = 1; |
74960c60 VP |
11794 | } |
11795 | else | |
11796 | { | |
b775012e LM |
11797 | /* This location still exists, but it won't be kept in the |
11798 | target since it may have been disabled. We proceed to | |
11799 | remove its target-side condition. */ | |
11800 | ||
4a64f543 MS |
11801 | /* The location is either no longer present, or got |
11802 | disabled. See if there's another location at the | |
11803 | same address, in which case we don't need to remove | |
11804 | this one from the target. */ | |
876fa593 | 11805 | |
2bdf28a0 | 11806 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11807 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11808 | { |
876fa593 | 11809 | for (loc2p = locp; |
f5336ca5 | 11810 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11811 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11812 | loc2p++) |
11813 | { | |
11814 | struct bp_location *loc2 = *loc2p; | |
11815 | ||
2d134ed3 | 11816 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11817 | { |
85d721b8 PA |
11818 | /* Read watchpoint locations are switched to |
11819 | access watchpoints, if the former are not | |
11820 | supported, but the latter are. */ | |
11821 | if (is_hardware_watchpoint (old_loc->owner)) | |
11822 | { | |
11823 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11824 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11825 | } | |
11826 | ||
934709f0 PW |
11827 | /* loc2 is a duplicated location. We need to check |
11828 | if it should be inserted in case it will be | |
11829 | unduplicated. */ | |
11830 | if (loc2 != old_loc | |
11831 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11832 | { |
934709f0 | 11833 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11834 | keep_in_target = 1; |
11835 | break; | |
11836 | } | |
876fa593 JK |
11837 | } |
11838 | } | |
11839 | } | |
74960c60 VP |
11840 | } |
11841 | ||
20874c92 VP |
11842 | if (!keep_in_target) |
11843 | { | |
834c0d03 | 11844 | if (remove_breakpoint (old_loc)) |
20874c92 | 11845 | { |
4a64f543 MS |
11846 | /* This is just about all we can do. We could keep |
11847 | this location on the global list, and try to | |
11848 | remove it next time, but there's no particular | |
11849 | reason why we will succeed next time. | |
20874c92 | 11850 | |
4a64f543 MS |
11851 | Note that at this point, old_loc->owner is still |
11852 | valid, as delete_breakpoint frees the breakpoint | |
11853 | only after calling us. */ | |
3e43a32a MS |
11854 | printf_filtered (_("warning: Error removing " |
11855 | "breakpoint %d\n"), | |
876fa593 | 11856 | old_loc->owner->number); |
20874c92 VP |
11857 | } |
11858 | removed = 1; | |
11859 | } | |
0d381245 | 11860 | } |
74960c60 VP |
11861 | |
11862 | if (!found_object) | |
1c5cfe86 | 11863 | { |
fbea99ea | 11864 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11865 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11866 | { |
db82e815 PA |
11867 | /* This location was removed from the target. In |
11868 | non-stop mode, a race condition is possible where | |
11869 | we've removed a breakpoint, but stop events for that | |
11870 | breakpoint are already queued and will arrive later. | |
11871 | We apply an heuristic to be able to distinguish such | |
11872 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11873 | breakpoint location for a bit, and will retire it | |
11874 | after we see some number of events. The theory here | |
11875 | is that reporting of events should, "on the average", | |
11876 | be fair, so after a while we'll see events from all | |
11877 | threads that have anything of interest, and no longer | |
11878 | need to keep this breakpoint location around. We | |
11879 | don't hold locations forever so to reduce chances of | |
11880 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11881 | SIGTRAP. | |
11882 | ||
11883 | The heuristic failing can be disastrous on | |
11884 | decr_pc_after_break targets. | |
11885 | ||
11886 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11887 | if we fail to recognize a late breakpoint SIGTRAP, | |
11888 | because events_till_retirement has reached 0 too | |
11889 | soon, we'll fail to do the PC adjustment, and report | |
11890 | a random SIGTRAP to the user. When the user resumes | |
11891 | the inferior, it will most likely immediately crash | |
2dec564e | 11892 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11893 | corrupted, because of being resumed e.g., in the |
11894 | middle of a multi-byte instruction, or skipped a | |
11895 | one-byte instruction. This was actually seen happen | |
11896 | on native x86-linux, and should be less rare on | |
11897 | targets that do not support new thread events, like | |
11898 | remote, due to the heuristic depending on | |
11899 | thread_count. | |
11900 | ||
11901 | Mistaking a random SIGTRAP for a breakpoint trap | |
11902 | causes similar symptoms (PC adjustment applied when | |
11903 | it shouldn't), but then again, playing with SIGTRAPs | |
11904 | behind the debugger's back is asking for trouble. | |
11905 | ||
11906 | Since hardware watchpoint traps are always | |
11907 | distinguishable from other traps, so we don't need to | |
11908 | apply keep hardware watchpoint moribund locations | |
11909 | around. We simply always ignore hardware watchpoint | |
11910 | traps we can no longer explain. */ | |
11911 | ||
876fa593 JK |
11912 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11913 | old_loc->owner = NULL; | |
20874c92 | 11914 | |
1123588c | 11915 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11916 | } |
11917 | else | |
f431efe5 PA |
11918 | { |
11919 | old_loc->owner = NULL; | |
11920 | decref_bp_location (&old_loc); | |
11921 | } | |
20874c92 | 11922 | } |
74960c60 | 11923 | } |
1c5cfe86 | 11924 | |
348d480f PA |
11925 | /* Rescan breakpoints at the same address and section, marking the |
11926 | first one as "first" and any others as "duplicates". This is so | |
11927 | that the bpt instruction is only inserted once. If we have a | |
11928 | permanent breakpoint at the same place as BPT, make that one the | |
11929 | official one, and the rest as duplicates. Permanent breakpoints | |
11930 | are sorted first for the same address. | |
11931 | ||
11932 | Do the same for hardware watchpoints, but also considering the | |
11933 | watchpoint's type (regular/access/read) and length. */ | |
11934 | ||
11935 | bp_loc_first = NULL; | |
11936 | wp_loc_first = NULL; | |
11937 | awp_loc_first = NULL; | |
11938 | rwp_loc_first = NULL; | |
11939 | ALL_BP_LOCATIONS (loc, locp) | |
11940 | { | |
11941 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11942 | non-NULL. */ | |
348d480f | 11943 | struct bp_location **loc_first_p; |
d3fbdd86 | 11944 | b = loc->owner; |
348d480f | 11945 | |
6f380991 | 11946 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11947 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11948 | /* Don't detect duplicate for tracepoint locations because they are |
11949 | never duplicated. See the comments in field `duplicate' of | |
11950 | `struct bp_location'. */ | |
348d480f | 11951 | || is_tracepoint (b)) |
b775012e LM |
11952 | { |
11953 | /* Clear the condition modification flag. */ | |
11954 | loc->condition_changed = condition_unchanged; | |
11955 | continue; | |
11956 | } | |
348d480f | 11957 | |
348d480f PA |
11958 | if (b->type == bp_hardware_watchpoint) |
11959 | loc_first_p = &wp_loc_first; | |
11960 | else if (b->type == bp_read_watchpoint) | |
11961 | loc_first_p = &rwp_loc_first; | |
11962 | else if (b->type == bp_access_watchpoint) | |
11963 | loc_first_p = &awp_loc_first; | |
11964 | else | |
11965 | loc_first_p = &bp_loc_first; | |
11966 | ||
11967 | if (*loc_first_p == NULL | |
11968 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11969 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11970 | { | |
11971 | *loc_first_p = loc; | |
11972 | loc->duplicate = 0; | |
b775012e LM |
11973 | |
11974 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11975 | { | |
11976 | loc->needs_update = 1; | |
11977 | /* Clear the condition modification flag. */ | |
11978 | loc->condition_changed = condition_unchanged; | |
11979 | } | |
348d480f PA |
11980 | continue; |
11981 | } | |
11982 | ||
934709f0 PW |
11983 | |
11984 | /* This and the above ensure the invariant that the first location | |
11985 | is not duplicated, and is the inserted one. | |
11986 | All following are marked as duplicated, and are not inserted. */ | |
11987 | if (loc->inserted) | |
11988 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11989 | loc->duplicate = 1; |
11990 | ||
b775012e LM |
11991 | /* Clear the condition modification flag. */ |
11992 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11993 | } |
11994 | ||
a25a5a45 | 11995 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11996 | { |
04086b45 | 11997 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11998 | insert_breakpoint_locations (); |
11999 | else | |
12000 | { | |
44702360 PA |
12001 | /* Even though the caller told us to not insert new |
12002 | locations, we may still need to update conditions on the | |
12003 | target's side of breakpoints that were already inserted | |
12004 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12005 | only update conditions for locations that are marked |
12006 | "needs_update". */ | |
12007 | update_inserted_breakpoint_locations (); | |
12008 | } | |
12009 | } | |
348d480f | 12010 | |
04086b45 | 12011 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12012 | download_tracepoint_locations (); |
348d480f PA |
12013 | } |
12014 | ||
12015 | void | |
12016 | breakpoint_retire_moribund (void) | |
12017 | { | |
1123588c TT |
12018 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12019 | { | |
12020 | struct bp_location *loc = moribund_locations[ix]; | |
12021 | if (--(loc->events_till_retirement) == 0) | |
12022 | { | |
12023 | decref_bp_location (&loc); | |
12024 | unordered_remove (moribund_locations, ix); | |
12025 | --ix; | |
12026 | } | |
12027 | } | |
348d480f PA |
12028 | } |
12029 | ||
12030 | static void | |
44702360 | 12031 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12032 | { |
348d480f | 12033 | |
a70b8144 | 12034 | try |
492d29ea PA |
12035 | { |
12036 | update_global_location_list (insert_mode); | |
12037 | } | |
230d2906 | 12038 | catch (const gdb_exception_error &e) |
492d29ea PA |
12039 | { |
12040 | } | |
348d480f PA |
12041 | } |
12042 | ||
12043 | /* Clear BKP from a BPS. */ | |
12044 | ||
12045 | static void | |
12046 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12047 | { | |
12048 | bpstat bs; | |
12049 | ||
12050 | for (bs = bps; bs; bs = bs->next) | |
12051 | if (bs->breakpoint_at == bpt) | |
12052 | { | |
12053 | bs->breakpoint_at = NULL; | |
12054 | bs->old_val = NULL; | |
12055 | /* bs->commands will be freed later. */ | |
12056 | } | |
12057 | } | |
12058 | ||
12059 | /* Callback for iterate_over_threads. */ | |
12060 | static int | |
12061 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12062 | { | |
9a3c8263 | 12063 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12064 | |
12065 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12066 | return 0; | |
12067 | } | |
12068 | ||
12069 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12070 | callbacks. */ | |
12071 | ||
12072 | static void | |
12073 | say_where (struct breakpoint *b) | |
12074 | { | |
12075 | struct value_print_options opts; | |
12076 | ||
12077 | get_user_print_options (&opts); | |
12078 | ||
12079 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12080 | single string. */ | |
12081 | if (b->loc == NULL) | |
12082 | { | |
f00aae0f KS |
12083 | /* For pending locations, the output differs slightly based |
12084 | on b->extra_string. If this is non-NULL, it contains either | |
12085 | a condition or dprintf arguments. */ | |
12086 | if (b->extra_string == NULL) | |
12087 | { | |
12088 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12089 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12090 | } |
12091 | else if (b->type == bp_dprintf) | |
12092 | { | |
12093 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12094 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12095 | b->extra_string); |
12096 | } | |
12097 | else | |
12098 | { | |
12099 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12100 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12101 | b->extra_string); |
12102 | } | |
348d480f PA |
12103 | } |
12104 | else | |
12105 | { | |
2f202fde | 12106 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12107 | printf_filtered (" at %ps", |
12108 | styled_string (address_style.style (), | |
12109 | paddress (b->loc->gdbarch, | |
12110 | b->loc->address))); | |
2f202fde | 12111 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12112 | { |
12113 | /* If there is a single location, we can print the location | |
12114 | more nicely. */ | |
12115 | if (b->loc->next == NULL) | |
0bb296cb | 12116 | { |
6a831f06 PA |
12117 | const char *filename |
12118 | = symtab_to_filename_for_display (b->loc->symtab); | |
12119 | printf_filtered (": file %ps, line %d.", | |
12120 | styled_string (file_name_style.style (), | |
12121 | filename), | |
0bb296cb TT |
12122 | b->loc->line_number); |
12123 | } | |
f8eba3c6 TT |
12124 | else |
12125 | /* This is not ideal, but each location may have a | |
12126 | different file name, and this at least reflects the | |
12127 | real situation somewhat. */ | |
f00aae0f | 12128 | printf_filtered (": %s.", |
d28cd78a | 12129 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12130 | } |
348d480f PA |
12131 | |
12132 | if (b->loc->next) | |
12133 | { | |
12134 | struct bp_location *loc = b->loc; | |
12135 | int n = 0; | |
12136 | for (; loc; loc = loc->next) | |
12137 | ++n; | |
12138 | printf_filtered (" (%d locations)", n); | |
12139 | } | |
12140 | } | |
12141 | } | |
12142 | ||
5f486660 | 12143 | bp_location::~bp_location () |
348d480f | 12144 | { |
5f486660 | 12145 | xfree (function_name); |
348d480f PA |
12146 | } |
12147 | ||
c1fc2657 | 12148 | /* Destructor for the breakpoint base class. */ |
348d480f | 12149 | |
c1fc2657 | 12150 | breakpoint::~breakpoint () |
348d480f | 12151 | { |
c1fc2657 SM |
12152 | xfree (this->cond_string); |
12153 | xfree (this->extra_string); | |
348d480f PA |
12154 | } |
12155 | ||
2060206e PA |
12156 | static struct bp_location * |
12157 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12158 | { |
5f486660 | 12159 | return new bp_location (self); |
348d480f PA |
12160 | } |
12161 | ||
2060206e PA |
12162 | static void |
12163 | base_breakpoint_re_set (struct breakpoint *b) | |
12164 | { | |
12165 | /* Nothing to re-set. */ | |
12166 | } | |
12167 | ||
12168 | #define internal_error_pure_virtual_called() \ | |
12169 | gdb_assert_not_reached ("pure virtual function called") | |
12170 | ||
12171 | static int | |
12172 | base_breakpoint_insert_location (struct bp_location *bl) | |
12173 | { | |
12174 | internal_error_pure_virtual_called (); | |
12175 | } | |
12176 | ||
12177 | static int | |
73971819 PA |
12178 | base_breakpoint_remove_location (struct bp_location *bl, |
12179 | enum remove_bp_reason reason) | |
2060206e PA |
12180 | { |
12181 | internal_error_pure_virtual_called (); | |
12182 | } | |
12183 | ||
12184 | static int | |
12185 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12186 | const address_space *aspace, |
09ac7c10 TT |
12187 | CORE_ADDR bp_addr, |
12188 | const struct target_waitstatus *ws) | |
2060206e PA |
12189 | { |
12190 | internal_error_pure_virtual_called (); | |
12191 | } | |
12192 | ||
12193 | static void | |
12194 | base_breakpoint_check_status (bpstat bs) | |
12195 | { | |
12196 | /* Always stop. */ | |
12197 | } | |
12198 | ||
12199 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12200 | errors. */ | |
12201 | ||
12202 | static int | |
12203 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12204 | { | |
12205 | internal_error_pure_virtual_called (); | |
12206 | } | |
12207 | ||
12208 | /* A "resources_needed" breakpoint_ops method that just internal | |
12209 | errors. */ | |
12210 | ||
12211 | static int | |
12212 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12213 | { | |
12214 | internal_error_pure_virtual_called (); | |
12215 | } | |
12216 | ||
12217 | static enum print_stop_action | |
12218 | base_breakpoint_print_it (bpstat bs) | |
12219 | { | |
12220 | internal_error_pure_virtual_called (); | |
12221 | } | |
12222 | ||
12223 | static void | |
12224 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12225 | struct ui_out *uiout) | |
12226 | { | |
12227 | /* nothing */ | |
12228 | } | |
12229 | ||
12230 | static void | |
12231 | base_breakpoint_print_mention (struct breakpoint *b) | |
12232 | { | |
12233 | internal_error_pure_virtual_called (); | |
12234 | } | |
12235 | ||
12236 | static void | |
12237 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12238 | { | |
12239 | internal_error_pure_virtual_called (); | |
12240 | } | |
12241 | ||
983af33b | 12242 | static void |
f00aae0f KS |
12243 | base_breakpoint_create_sals_from_location |
12244 | (const struct event_location *location, | |
12245 | struct linespec_result *canonical, | |
12246 | enum bptype type_wanted) | |
983af33b SDJ |
12247 | { |
12248 | internal_error_pure_virtual_called (); | |
12249 | } | |
12250 | ||
12251 | static void | |
12252 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12253 | struct linespec_result *c, | |
e1e01040 PA |
12254 | gdb::unique_xmalloc_ptr<char> cond_string, |
12255 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12256 | enum bptype type_wanted, |
12257 | enum bpdisp disposition, | |
12258 | int thread, | |
12259 | int task, int ignore_count, | |
12260 | const struct breakpoint_ops *o, | |
12261 | int from_tty, int enabled, | |
44f238bb | 12262 | int internal, unsigned flags) |
983af33b SDJ |
12263 | { |
12264 | internal_error_pure_virtual_called (); | |
12265 | } | |
12266 | ||
6c5b2ebe | 12267 | static std::vector<symtab_and_line> |
f00aae0f KS |
12268 | base_breakpoint_decode_location (struct breakpoint *b, |
12269 | const struct event_location *location, | |
6c5b2ebe | 12270 | struct program_space *search_pspace) |
983af33b SDJ |
12271 | { |
12272 | internal_error_pure_virtual_called (); | |
12273 | } | |
12274 | ||
ab04a2af TT |
12275 | /* The default 'explains_signal' method. */ |
12276 | ||
47591c29 | 12277 | static int |
427cd150 | 12278 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12279 | { |
47591c29 | 12280 | return 1; |
ab04a2af TT |
12281 | } |
12282 | ||
9d6e6e84 HZ |
12283 | /* The default "after_condition_true" method. */ |
12284 | ||
12285 | static void | |
12286 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12287 | { | |
12288 | /* Nothing to do. */ | |
12289 | } | |
12290 | ||
ab04a2af | 12291 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12292 | { |
2060206e PA |
12293 | base_breakpoint_allocate_location, |
12294 | base_breakpoint_re_set, | |
12295 | base_breakpoint_insert_location, | |
12296 | base_breakpoint_remove_location, | |
12297 | base_breakpoint_breakpoint_hit, | |
12298 | base_breakpoint_check_status, | |
12299 | base_breakpoint_resources_needed, | |
12300 | base_breakpoint_works_in_software_mode, | |
12301 | base_breakpoint_print_it, | |
12302 | NULL, | |
12303 | base_breakpoint_print_one_detail, | |
12304 | base_breakpoint_print_mention, | |
983af33b | 12305 | base_breakpoint_print_recreate, |
5f700d83 | 12306 | base_breakpoint_create_sals_from_location, |
983af33b | 12307 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12308 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12309 | base_breakpoint_explains_signal, |
12310 | base_breakpoint_after_condition_true, | |
2060206e PA |
12311 | }; |
12312 | ||
12313 | /* Default breakpoint_ops methods. */ | |
12314 | ||
12315 | static void | |
348d480f PA |
12316 | bkpt_re_set (struct breakpoint *b) |
12317 | { | |
06edf0c0 | 12318 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12319 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12320 | { |
f00aae0f | 12321 | /* Anything without a location can't be re-set. */ |
348d480f | 12322 | delete_breakpoint (b); |
06edf0c0 | 12323 | return; |
348d480f | 12324 | } |
06edf0c0 PA |
12325 | |
12326 | breakpoint_re_set_default (b); | |
348d480f PA |
12327 | } |
12328 | ||
2060206e | 12329 | static int |
348d480f PA |
12330 | bkpt_insert_location (struct bp_location *bl) |
12331 | { | |
cd6c3b4f YQ |
12332 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12333 | ||
579c6ad9 | 12334 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12335 | bl->target_info.placed_address = addr; |
12336 | ||
348d480f | 12337 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12338 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12339 | else |
7c16b83e | 12340 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12341 | } |
12342 | ||
2060206e | 12343 | static int |
73971819 | 12344 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12345 | { |
12346 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12347 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12348 | else | |
73971819 | 12349 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12350 | } |
12351 | ||
2060206e | 12352 | static int |
348d480f | 12353 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12354 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12355 | const struct target_waitstatus *ws) |
348d480f | 12356 | { |
09ac7c10 | 12357 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12358 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12359 | return 0; |
12360 | ||
348d480f PA |
12361 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12362 | aspace, bp_addr)) | |
12363 | return 0; | |
12364 | ||
12365 | if (overlay_debugging /* unmapped overlay section */ | |
12366 | && section_is_overlay (bl->section) | |
12367 | && !section_is_mapped (bl->section)) | |
12368 | return 0; | |
12369 | ||
12370 | return 1; | |
12371 | } | |
12372 | ||
cd1608cc PA |
12373 | static int |
12374 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12375 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12376 | const struct target_waitstatus *ws) |
12377 | { | |
12378 | if (dprintf_style == dprintf_style_agent | |
12379 | && target_can_run_breakpoint_commands ()) | |
12380 | { | |
12381 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12382 | for this address it must be for a breakpoint that happens to | |
12383 | be set at the same address. */ | |
12384 | return 0; | |
12385 | } | |
12386 | ||
12387 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12388 | } | |
12389 | ||
2060206e | 12390 | static int |
348d480f PA |
12391 | bkpt_resources_needed (const struct bp_location *bl) |
12392 | { | |
12393 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12394 | ||
12395 | return 1; | |
12396 | } | |
12397 | ||
2060206e | 12398 | static enum print_stop_action |
348d480f PA |
12399 | bkpt_print_it (bpstat bs) |
12400 | { | |
348d480f PA |
12401 | struct breakpoint *b; |
12402 | const struct bp_location *bl; | |
001c8c33 | 12403 | int bp_temp; |
79a45e25 | 12404 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12405 | |
12406 | gdb_assert (bs->bp_location_at != NULL); | |
12407 | ||
12408 | bl = bs->bp_location_at; | |
12409 | b = bs->breakpoint_at; | |
12410 | ||
001c8c33 PA |
12411 | bp_temp = b->disposition == disp_del; |
12412 | if (bl->address != bl->requested_address) | |
12413 | breakpoint_adjustment_warning (bl->requested_address, | |
12414 | bl->address, | |
12415 | b->number, 1); | |
12416 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12417 | maybe_print_thread_hit_breakpoint (uiout); |
12418 | ||
112e8700 | 12419 | if (uiout->is_mi_like_p ()) |
348d480f | 12420 | { |
112e8700 | 12421 | uiout->field_string ("reason", |
001c8c33 | 12422 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12423 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12424 | } |
6a831f06 PA |
12425 | if (bp_temp) |
12426 | uiout->message ("Temporary breakpoint %pF, ", | |
12427 | signed_field ("bkptno", b->number)); | |
12428 | else | |
12429 | uiout->message ("Breakpoint %pF, ", | |
12430 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12431 | |
001c8c33 | 12432 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12433 | } |
12434 | ||
2060206e | 12435 | static void |
06edf0c0 PA |
12436 | bkpt_print_mention (struct breakpoint *b) |
12437 | { | |
112e8700 | 12438 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12439 | return; |
12440 | ||
12441 | switch (b->type) | |
12442 | { | |
12443 | case bp_breakpoint: | |
12444 | case bp_gnu_ifunc_resolver: | |
12445 | if (b->disposition == disp_del) | |
12446 | printf_filtered (_("Temporary breakpoint")); | |
12447 | else | |
12448 | printf_filtered (_("Breakpoint")); | |
12449 | printf_filtered (_(" %d"), b->number); | |
12450 | if (b->type == bp_gnu_ifunc_resolver) | |
12451 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12452 | break; | |
12453 | case bp_hardware_breakpoint: | |
12454 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12455 | break; | |
e7e0cddf SS |
12456 | case bp_dprintf: |
12457 | printf_filtered (_("Dprintf %d"), b->number); | |
12458 | break; | |
06edf0c0 PA |
12459 | } |
12460 | ||
12461 | say_where (b); | |
12462 | } | |
12463 | ||
2060206e | 12464 | static void |
06edf0c0 PA |
12465 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12466 | { | |
12467 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12468 | fprintf_unfiltered (fp, "tbreak"); | |
12469 | else if (tp->type == bp_breakpoint) | |
12470 | fprintf_unfiltered (fp, "break"); | |
12471 | else if (tp->type == bp_hardware_breakpoint | |
12472 | && tp->disposition == disp_del) | |
12473 | fprintf_unfiltered (fp, "thbreak"); | |
12474 | else if (tp->type == bp_hardware_breakpoint) | |
12475 | fprintf_unfiltered (fp, "hbreak"); | |
12476 | else | |
12477 | internal_error (__FILE__, __LINE__, | |
12478 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12479 | ||
f00aae0f | 12480 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12481 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12482 | |
12483 | /* Print out extra_string if this breakpoint is pending. It might | |
12484 | contain, for example, conditions that were set by the user. */ | |
12485 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12486 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12487 | ||
dd11a36c | 12488 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12489 | } |
12490 | ||
983af33b | 12491 | static void |
f00aae0f KS |
12492 | bkpt_create_sals_from_location (const struct event_location *location, |
12493 | struct linespec_result *canonical, | |
12494 | enum bptype type_wanted) | |
983af33b | 12495 | { |
f00aae0f | 12496 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12497 | } |
12498 | ||
12499 | static void | |
12500 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12501 | struct linespec_result *canonical, | |
e1e01040 PA |
12502 | gdb::unique_xmalloc_ptr<char> cond_string, |
12503 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12504 | enum bptype type_wanted, |
12505 | enum bpdisp disposition, | |
12506 | int thread, | |
12507 | int task, int ignore_count, | |
12508 | const struct breakpoint_ops *ops, | |
12509 | int from_tty, int enabled, | |
44f238bb | 12510 | int internal, unsigned flags) |
983af33b | 12511 | { |
023fa29b | 12512 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12513 | std::move (cond_string), |
12514 | std::move (extra_string), | |
e7e0cddf | 12515 | type_wanted, |
983af33b SDJ |
12516 | disposition, thread, task, |
12517 | ignore_count, ops, from_tty, | |
44f238bb | 12518 | enabled, internal, flags); |
983af33b SDJ |
12519 | } |
12520 | ||
6c5b2ebe | 12521 | static std::vector<symtab_and_line> |
f00aae0f KS |
12522 | bkpt_decode_location (struct breakpoint *b, |
12523 | const struct event_location *location, | |
6c5b2ebe | 12524 | struct program_space *search_pspace) |
983af33b | 12525 | { |
6c5b2ebe | 12526 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12527 | } |
12528 | ||
06edf0c0 PA |
12529 | /* Virtual table for internal breakpoints. */ |
12530 | ||
12531 | static void | |
12532 | internal_bkpt_re_set (struct breakpoint *b) | |
12533 | { | |
12534 | switch (b->type) | |
12535 | { | |
12536 | /* Delete overlay event and longjmp master breakpoints; they | |
12537 | will be reset later by breakpoint_re_set. */ | |
12538 | case bp_overlay_event: | |
12539 | case bp_longjmp_master: | |
12540 | case bp_std_terminate_master: | |
12541 | case bp_exception_master: | |
12542 | delete_breakpoint (b); | |
12543 | break; | |
12544 | ||
12545 | /* This breakpoint is special, it's set up when the inferior | |
12546 | starts and we really don't want to touch it. */ | |
12547 | case bp_shlib_event: | |
12548 | ||
12549 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12550 | it is set up, we do not want to touch it. */ | |
12551 | case bp_thread_event: | |
12552 | break; | |
12553 | } | |
12554 | } | |
12555 | ||
12556 | static void | |
12557 | internal_bkpt_check_status (bpstat bs) | |
12558 | { | |
a9b3a50f PA |
12559 | if (bs->breakpoint_at->type == bp_shlib_event) |
12560 | { | |
12561 | /* If requested, stop when the dynamic linker notifies GDB of | |
12562 | events. This allows the user to get control and place | |
12563 | breakpoints in initializer routines for dynamically loaded | |
12564 | objects (among other things). */ | |
12565 | bs->stop = stop_on_solib_events; | |
12566 | bs->print = stop_on_solib_events; | |
12567 | } | |
12568 | else | |
12569 | bs->stop = 0; | |
06edf0c0 PA |
12570 | } |
12571 | ||
12572 | static enum print_stop_action | |
12573 | internal_bkpt_print_it (bpstat bs) | |
12574 | { | |
06edf0c0 | 12575 | struct breakpoint *b; |
06edf0c0 | 12576 | |
06edf0c0 PA |
12577 | b = bs->breakpoint_at; |
12578 | ||
06edf0c0 PA |
12579 | switch (b->type) |
12580 | { | |
348d480f PA |
12581 | case bp_shlib_event: |
12582 | /* Did we stop because the user set the stop_on_solib_events | |
12583 | variable? (If so, we report this as a generic, "Stopped due | |
12584 | to shlib event" message.) */ | |
edcc5120 | 12585 | print_solib_event (0); |
348d480f PA |
12586 | break; |
12587 | ||
12588 | case bp_thread_event: | |
12589 | /* Not sure how we will get here. | |
12590 | GDB should not stop for these breakpoints. */ | |
12591 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12592 | break; |
12593 | ||
12594 | case bp_overlay_event: | |
12595 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12596 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12597 | break; |
12598 | ||
12599 | case bp_longjmp_master: | |
12600 | /* These should never be enabled. */ | |
12601 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12602 | break; |
12603 | ||
12604 | case bp_std_terminate_master: | |
12605 | /* These should never be enabled. */ | |
12606 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12607 | "gdb should not stop!\n")); | |
348d480f PA |
12608 | break; |
12609 | ||
12610 | case bp_exception_master: | |
12611 | /* These should never be enabled. */ | |
12612 | printf_filtered (_("Exception Master Breakpoint: " | |
12613 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12614 | break; |
12615 | } | |
12616 | ||
001c8c33 | 12617 | return PRINT_NOTHING; |
06edf0c0 PA |
12618 | } |
12619 | ||
12620 | static void | |
12621 | internal_bkpt_print_mention (struct breakpoint *b) | |
12622 | { | |
12623 | /* Nothing to mention. These breakpoints are internal. */ | |
12624 | } | |
12625 | ||
06edf0c0 PA |
12626 | /* Virtual table for momentary breakpoints */ |
12627 | ||
12628 | static void | |
12629 | momentary_bkpt_re_set (struct breakpoint *b) | |
12630 | { | |
12631 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12632 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12633 | Otherwise these should have been blown away via the cleanup chain |
12634 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12635 | } | |
12636 | ||
12637 | static void | |
12638 | momentary_bkpt_check_status (bpstat bs) | |
12639 | { | |
12640 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12641 | } | |
12642 | ||
12643 | static enum print_stop_action | |
12644 | momentary_bkpt_print_it (bpstat bs) | |
12645 | { | |
001c8c33 | 12646 | return PRINT_UNKNOWN; |
348d480f PA |
12647 | } |
12648 | ||
06edf0c0 PA |
12649 | static void |
12650 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12651 | { |
06edf0c0 | 12652 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12653 | } |
12654 | ||
e2e4d78b JK |
12655 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12656 | ||
12657 | It gets cleared already on the removal of the first one of such placed | |
12658 | breakpoints. This is OK as they get all removed altogether. */ | |
12659 | ||
c1fc2657 | 12660 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12661 | { |
c1fc2657 | 12662 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12663 | |
c1fc2657 | 12664 | if (tp != NULL) |
e2e4d78b | 12665 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12666 | } |
12667 | ||
55aa24fb SDJ |
12668 | /* Specific methods for probe breakpoints. */ |
12669 | ||
12670 | static int | |
12671 | bkpt_probe_insert_location (struct bp_location *bl) | |
12672 | { | |
12673 | int v = bkpt_insert_location (bl); | |
12674 | ||
12675 | if (v == 0) | |
12676 | { | |
12677 | /* The insertion was successful, now let's set the probe's semaphore | |
12678 | if needed. */ | |
935676c9 | 12679 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12680 | } |
12681 | ||
12682 | return v; | |
12683 | } | |
12684 | ||
12685 | static int | |
73971819 PA |
12686 | bkpt_probe_remove_location (struct bp_location *bl, |
12687 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12688 | { |
12689 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12690 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12691 | |
73971819 | 12692 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12693 | } |
12694 | ||
12695 | static void | |
f00aae0f | 12696 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12697 | struct linespec_result *canonical, |
f00aae0f | 12698 | enum bptype type_wanted) |
55aa24fb SDJ |
12699 | { |
12700 | struct linespec_sals lsal; | |
12701 | ||
c2f4122d | 12702 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12703 | lsal.canonical |
12704 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12705 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12706 | } |
12707 | ||
6c5b2ebe | 12708 | static std::vector<symtab_and_line> |
f00aae0f KS |
12709 | bkpt_probe_decode_location (struct breakpoint *b, |
12710 | const struct event_location *location, | |
6c5b2ebe | 12711 | struct program_space *search_pspace) |
55aa24fb | 12712 | { |
6c5b2ebe PA |
12713 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12714 | if (sals.empty ()) | |
55aa24fb | 12715 | error (_("probe not found")); |
6c5b2ebe | 12716 | return sals; |
55aa24fb SDJ |
12717 | } |
12718 | ||
348d480f | 12719 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12720 | |
348d480f PA |
12721 | static void |
12722 | tracepoint_re_set (struct breakpoint *b) | |
12723 | { | |
12724 | breakpoint_re_set_default (b); | |
12725 | } | |
876fa593 | 12726 | |
348d480f PA |
12727 | static int |
12728 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12729 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12730 | const struct target_waitstatus *ws) |
348d480f PA |
12731 | { |
12732 | /* By definition, the inferior does not report stops at | |
12733 | tracepoints. */ | |
12734 | return 0; | |
74960c60 VP |
12735 | } |
12736 | ||
12737 | static void | |
348d480f PA |
12738 | tracepoint_print_one_detail (const struct breakpoint *self, |
12739 | struct ui_out *uiout) | |
74960c60 | 12740 | { |
d9b3f62e | 12741 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12742 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12743 | { |
12744 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12745 | |
6a831f06 PA |
12746 | uiout->message ("\tmarker id is %pF\n", |
12747 | string_field ("static-tracepoint-marker-string-id", | |
12748 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12749 | } |
0d381245 VP |
12750 | } |
12751 | ||
a474d7c2 | 12752 | static void |
348d480f | 12753 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12754 | { |
112e8700 | 12755 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12756 | return; |
cc59ec59 | 12757 | |
348d480f PA |
12758 | switch (b->type) |
12759 | { | |
12760 | case bp_tracepoint: | |
12761 | printf_filtered (_("Tracepoint")); | |
12762 | printf_filtered (_(" %d"), b->number); | |
12763 | break; | |
12764 | case bp_fast_tracepoint: | |
12765 | printf_filtered (_("Fast tracepoint")); | |
12766 | printf_filtered (_(" %d"), b->number); | |
12767 | break; | |
12768 | case bp_static_tracepoint: | |
12769 | printf_filtered (_("Static tracepoint")); | |
12770 | printf_filtered (_(" %d"), b->number); | |
12771 | break; | |
12772 | default: | |
12773 | internal_error (__FILE__, __LINE__, | |
12774 | _("unhandled tracepoint type %d"), (int) b->type); | |
12775 | } | |
12776 | ||
12777 | say_where (b); | |
a474d7c2 PA |
12778 | } |
12779 | ||
348d480f | 12780 | static void |
d9b3f62e | 12781 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12782 | { |
d9b3f62e PA |
12783 | struct tracepoint *tp = (struct tracepoint *) self; |
12784 | ||
12785 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12786 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12787 | else if (self->type == bp_static_tracepoint) |
348d480f | 12788 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12789 | else if (self->type == bp_tracepoint) |
348d480f PA |
12790 | fprintf_unfiltered (fp, "trace"); |
12791 | else | |
12792 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12793 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12794 | |
f00aae0f | 12795 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12796 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12797 | print_recreate_thread (self, fp); |
12798 | ||
12799 | if (tp->pass_count) | |
12800 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12801 | } |
12802 | ||
983af33b | 12803 | static void |
f00aae0f KS |
12804 | tracepoint_create_sals_from_location (const struct event_location *location, |
12805 | struct linespec_result *canonical, | |
12806 | enum bptype type_wanted) | |
983af33b | 12807 | { |
f00aae0f | 12808 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12809 | } |
12810 | ||
12811 | static void | |
12812 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12813 | struct linespec_result *canonical, | |
e1e01040 PA |
12814 | gdb::unique_xmalloc_ptr<char> cond_string, |
12815 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12816 | enum bptype type_wanted, |
12817 | enum bpdisp disposition, | |
12818 | int thread, | |
12819 | int task, int ignore_count, | |
12820 | const struct breakpoint_ops *ops, | |
12821 | int from_tty, int enabled, | |
44f238bb | 12822 | int internal, unsigned flags) |
983af33b | 12823 | { |
023fa29b | 12824 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12825 | std::move (cond_string), |
12826 | std::move (extra_string), | |
e7e0cddf | 12827 | type_wanted, |
983af33b SDJ |
12828 | disposition, thread, task, |
12829 | ignore_count, ops, from_tty, | |
44f238bb | 12830 | enabled, internal, flags); |
983af33b SDJ |
12831 | } |
12832 | ||
6c5b2ebe | 12833 | static std::vector<symtab_and_line> |
f00aae0f KS |
12834 | tracepoint_decode_location (struct breakpoint *b, |
12835 | const struct event_location *location, | |
6c5b2ebe | 12836 | struct program_space *search_pspace) |
983af33b | 12837 | { |
6c5b2ebe | 12838 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12839 | } |
12840 | ||
2060206e | 12841 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12842 | |
bac7c5cf | 12843 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12844 | |
12845 | static void | |
f00aae0f KS |
12846 | tracepoint_probe_create_sals_from_location |
12847 | (const struct event_location *location, | |
12848 | struct linespec_result *canonical, | |
12849 | enum bptype type_wanted) | |
55aa24fb SDJ |
12850 | { |
12851 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12852 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12853 | } |
12854 | ||
6c5b2ebe | 12855 | static std::vector<symtab_and_line> |
f00aae0f KS |
12856 | tracepoint_probe_decode_location (struct breakpoint *b, |
12857 | const struct event_location *location, | |
6c5b2ebe | 12858 | struct program_space *search_pspace) |
55aa24fb SDJ |
12859 | { |
12860 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12861 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12862 | } |
12863 | ||
5c2b4418 HZ |
12864 | /* Dprintf breakpoint_ops methods. */ |
12865 | ||
12866 | static void | |
12867 | dprintf_re_set (struct breakpoint *b) | |
12868 | { | |
12869 | breakpoint_re_set_default (b); | |
12870 | ||
f00aae0f KS |
12871 | /* extra_string should never be non-NULL for dprintf. */ |
12872 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12873 | |
12874 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12875 | 2 - create a dprintf, which resolves fine. | |
12876 | 3 - disconnect from target 1 | |
12877 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12878 | ||
12879 | After steps #3/#4, you'll want the dprintf command list to | |
12880 | be updated, because target 1 and 2 may well return different | |
12881 | answers for target_can_run_breakpoint_commands(). | |
12882 | Given absence of finer grained resetting, we get to do | |
12883 | it all the time. */ | |
12884 | if (b->extra_string != NULL) | |
12885 | update_dprintf_command_list (b); | |
12886 | } | |
12887 | ||
2d9442cc HZ |
12888 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12889 | ||
12890 | static void | |
12891 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12892 | { | |
f00aae0f | 12893 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12894 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12895 | tp->extra_string); |
12896 | print_recreate_thread (tp, fp); | |
12897 | } | |
12898 | ||
9d6e6e84 HZ |
12899 | /* Implement the "after_condition_true" breakpoint_ops method for |
12900 | dprintf. | |
12901 | ||
12902 | dprintf's are implemented with regular commands in their command | |
12903 | list, but we run the commands here instead of before presenting the | |
12904 | stop to the user, as dprintf's don't actually cause a stop. This | |
12905 | also makes it so that the commands of multiple dprintfs at the same | |
12906 | address are all handled. */ | |
12907 | ||
12908 | static void | |
12909 | dprintf_after_condition_true (struct bpstats *bs) | |
12910 | { | |
04afa70c | 12911 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12912 | struct bpstats *tmp_bs_p = &tmp_bs; |
12913 | ||
12914 | /* dprintf's never cause a stop. This wasn't set in the | |
12915 | check_status hook instead because that would make the dprintf's | |
12916 | condition not be evaluated. */ | |
12917 | bs->stop = 0; | |
12918 | ||
12919 | /* Run the command list here. Take ownership of it instead of | |
12920 | copying. We never want these commands to run later in | |
12921 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12922 | be set at same address as this dprintf, or even if running the | |
12923 | commands here throws. */ | |
12924 | tmp_bs.commands = bs->commands; | |
12925 | bs->commands = NULL; | |
9d6e6e84 HZ |
12926 | |
12927 | bpstat_do_actions_1 (&tmp_bs_p); | |
12928 | ||
12929 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12930 | bpstat_do_actions_1 may return early without processing the whole | |
12931 | list. */ | |
9d6e6e84 HZ |
12932 | } |
12933 | ||
983af33b SDJ |
12934 | /* The breakpoint_ops structure to be used on static tracepoints with |
12935 | markers (`-m'). */ | |
12936 | ||
12937 | static void | |
f00aae0f | 12938 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12939 | struct linespec_result *canonical, |
f00aae0f | 12940 | enum bptype type_wanted) |
983af33b SDJ |
12941 | { |
12942 | struct linespec_sals lsal; | |
f00aae0f | 12943 | const char *arg_start, *arg; |
983af33b | 12944 | |
a20714ff | 12945 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12946 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12947 | |
f2fc3015 TT |
12948 | std::string str (arg_start, arg - arg_start); |
12949 | const char *ptr = str.c_str (); | |
a20714ff PA |
12950 | canonical->location |
12951 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12952 | |
8e9e35b1 TT |
12953 | lsal.canonical |
12954 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12955 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12956 | } |
12957 | ||
12958 | static void | |
12959 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12960 | struct linespec_result *canonical, | |
e1e01040 PA |
12961 | gdb::unique_xmalloc_ptr<char> cond_string, |
12962 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12963 | enum bptype type_wanted, |
12964 | enum bpdisp disposition, | |
12965 | int thread, | |
12966 | int task, int ignore_count, | |
12967 | const struct breakpoint_ops *ops, | |
12968 | int from_tty, int enabled, | |
44f238bb | 12969 | int internal, unsigned flags) |
983af33b | 12970 | { |
6c5b2ebe | 12971 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12972 | |
12973 | /* If the user is creating a static tracepoint by marker id | |
12974 | (strace -m MARKER_ID), then store the sals index, so that | |
12975 | breakpoint_re_set can try to match up which of the newly | |
12976 | found markers corresponds to this one, and, don't try to | |
12977 | expand multiple locations for each sal, given than SALS | |
12978 | already should contain all sals for MARKER_ID. */ | |
12979 | ||
6c5b2ebe | 12980 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12981 | { |
6c5b2ebe PA |
12982 | event_location_up location |
12983 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12984 | |
b270e6f9 | 12985 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 12986 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 12987 | std::move (location), NULL, |
e1e01040 PA |
12988 | std::move (cond_string), |
12989 | std::move (extra_string), | |
e7e0cddf | 12990 | type_wanted, disposition, |
983af33b | 12991 | thread, task, ignore_count, ops, |
44f238bb | 12992 | from_tty, enabled, internal, flags, |
983af33b SDJ |
12993 | canonical->special_display); |
12994 | /* Given that its possible to have multiple markers with | |
12995 | the same string id, if the user is creating a static | |
12996 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12997 | store the sals index, so that breakpoint_re_set can | |
12998 | try to match up which of the newly found markers | |
12999 | corresponds to this one */ | |
13000 | tp->static_trace_marker_id_idx = i; | |
13001 | ||
b270e6f9 | 13002 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13003 | } |
13004 | } | |
13005 | ||
6c5b2ebe | 13006 | static std::vector<symtab_and_line> |
f00aae0f KS |
13007 | strace_marker_decode_location (struct breakpoint *b, |
13008 | const struct event_location *location, | |
6c5b2ebe | 13009 | struct program_space *search_pspace) |
983af33b SDJ |
13010 | { |
13011 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13012 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13013 | |
6c5b2ebe PA |
13014 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13015 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13016 | { |
6c5b2ebe PA |
13017 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13018 | sals.resize (1); | |
13019 | return sals; | |
983af33b SDJ |
13020 | } |
13021 | else | |
5d9310c4 | 13022 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13023 | } |
13024 | ||
13025 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13026 | ||
13027 | static int | |
13028 | strace_marker_p (struct breakpoint *b) | |
13029 | { | |
13030 | return b->ops == &strace_marker_breakpoint_ops; | |
13031 | } | |
13032 | ||
53a5351d | 13033 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13034 | structures. */ |
c906108c SS |
13035 | |
13036 | void | |
fba45db2 | 13037 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13038 | { |
52f0bd74 | 13039 | struct breakpoint *b; |
c906108c | 13040 | |
8a3fe4f8 | 13041 | gdb_assert (bpt != NULL); |
c906108c | 13042 | |
4a64f543 MS |
13043 | /* Has this bp already been deleted? This can happen because |
13044 | multiple lists can hold pointers to bp's. bpstat lists are | |
13045 | especial culprits. | |
13046 | ||
13047 | One example of this happening is a watchpoint's scope bp. When | |
13048 | the scope bp triggers, we notice that the watchpoint is out of | |
13049 | scope, and delete it. We also delete its scope bp. But the | |
13050 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13051 | That bpstat is then checked for auto-deleting bp's, which are | |
13052 | deleted. | |
13053 | ||
13054 | A real solution to this problem might involve reference counts in | |
13055 | bp's, and/or giving them pointers back to their referencing | |
13056 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13057 | storage when no more references were extent. A cheaper bandaid | |
13058 | was chosen. */ | |
c906108c SS |
13059 | if (bpt->type == bp_none) |
13060 | return; | |
13061 | ||
4a64f543 MS |
13062 | /* At least avoid this stale reference until the reference counting |
13063 | of breakpoints gets resolved. */ | |
d0fb5eae | 13064 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13065 | { |
d0fb5eae | 13066 | struct breakpoint *related; |
3a5c3e22 | 13067 | struct watchpoint *w; |
d0fb5eae JK |
13068 | |
13069 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13070 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13071 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13072 | w = (struct watchpoint *) bpt; |
13073 | else | |
13074 | w = NULL; | |
13075 | if (w != NULL) | |
13076 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13077 | |
13078 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13079 | for (related = bpt; related->related_breakpoint != bpt; | |
13080 | related = related->related_breakpoint); | |
13081 | related->related_breakpoint = bpt->related_breakpoint; | |
13082 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13083 | } |
13084 | ||
a9634178 TJB |
13085 | /* watch_command_1 creates a watchpoint but only sets its number if |
13086 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13087 | a problem in that process, we'll be asked to delete the half-created | |
13088 | watchpoint. In that case, don't announce the deletion. */ | |
13089 | if (bpt->number) | |
76727919 | 13090 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13091 | |
c906108c SS |
13092 | if (breakpoint_chain == bpt) |
13093 | breakpoint_chain = bpt->next; | |
13094 | ||
c906108c SS |
13095 | ALL_BREAKPOINTS (b) |
13096 | if (b->next == bpt) | |
c5aa993b JM |
13097 | { |
13098 | b->next = bpt->next; | |
13099 | break; | |
13100 | } | |
c906108c | 13101 | |
f431efe5 PA |
13102 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13103 | been freed. */ | |
13104 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13105 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13106 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13107 | commands are associated with the bpstat; if we remove it here, | |
13108 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13109 | event-top.c won't do anything, and temporary breakpoints with | |
13110 | commands won't work. */ | |
13111 | ||
13112 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13113 | ||
4a64f543 MS |
13114 | /* Now that breakpoint is removed from breakpoint list, update the |
13115 | global location list. This will remove locations that used to | |
13116 | belong to this breakpoint. Do this before freeing the breakpoint | |
13117 | itself, since remove_breakpoint looks at location's owner. It | |
13118 | might be better design to have location completely | |
13119 | self-contained, but it's not the case now. */ | |
44702360 | 13120 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13121 | |
4a64f543 MS |
13122 | /* On the chance that someone will soon try again to delete this |
13123 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13124 | bpt->type = bp_none; |
4d01a485 | 13125 | delete bpt; |
c906108c SS |
13126 | } |
13127 | ||
51be5b68 PA |
13128 | /* Iterator function to call a user-provided callback function once |
13129 | for each of B and its related breakpoints. */ | |
13130 | ||
13131 | static void | |
13132 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13133 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13134 | { |
13135 | struct breakpoint *related; | |
13136 | ||
13137 | related = b; | |
13138 | do | |
13139 | { | |
13140 | struct breakpoint *next; | |
13141 | ||
13142 | /* FUNCTION may delete RELATED. */ | |
13143 | next = related->related_breakpoint; | |
13144 | ||
13145 | if (next == related) | |
13146 | { | |
13147 | /* RELATED is the last ring entry. */ | |
48649e1b | 13148 | function (related); |
51be5b68 PA |
13149 | |
13150 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13151 | B. There's nothing left to do anyway, so just break | |
13152 | out. */ | |
13153 | break; | |
13154 | } | |
13155 | else | |
48649e1b | 13156 | function (related); |
51be5b68 PA |
13157 | |
13158 | related = next; | |
13159 | } | |
13160 | while (related != b); | |
13161 | } | |
95a42b64 | 13162 | |
4495129a | 13163 | static void |
981a3fb3 | 13164 | delete_command (const char *arg, int from_tty) |
c906108c | 13165 | { |
35df4500 | 13166 | struct breakpoint *b, *b_tmp; |
c906108c | 13167 | |
ea9365bb TT |
13168 | dont_repeat (); |
13169 | ||
c906108c SS |
13170 | if (arg == 0) |
13171 | { | |
13172 | int breaks_to_delete = 0; | |
13173 | ||
46c6471b PA |
13174 | /* Delete all breakpoints if no argument. Do not delete |
13175 | internal breakpoints, these have to be deleted with an | |
13176 | explicit breakpoint number argument. */ | |
c5aa993b | 13177 | ALL_BREAKPOINTS (b) |
46c6471b | 13178 | if (user_breakpoint_p (b)) |
973d738b DJ |
13179 | { |
13180 | breaks_to_delete = 1; | |
13181 | break; | |
13182 | } | |
c906108c SS |
13183 | |
13184 | /* Ask user only if there are some breakpoints to delete. */ | |
13185 | if (!from_tty | |
e2e0b3e5 | 13186 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13187 | { |
35df4500 | 13188 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13189 | if (user_breakpoint_p (b)) |
c5aa993b | 13190 | delete_breakpoint (b); |
c906108c SS |
13191 | } |
13192 | } | |
13193 | else | |
48649e1b | 13194 | map_breakpoint_numbers |
b926417a | 13195 | (arg, [&] (breakpoint *br) |
48649e1b | 13196 | { |
b926417a | 13197 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13198 | }); |
c906108c SS |
13199 | } |
13200 | ||
c2f4122d PA |
13201 | /* Return true if all locations of B bound to PSPACE are pending. If |
13202 | PSPACE is NULL, all locations of all program spaces are | |
13203 | considered. */ | |
13204 | ||
0d381245 | 13205 | static int |
c2f4122d | 13206 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13207 | { |
c2f4122d PA |
13208 | struct bp_location *loc; |
13209 | ||
13210 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13211 | if ((pspace == NULL | |
13212 | || loc->pspace == pspace) | |
13213 | && !loc->shlib_disabled | |
8645ff69 | 13214 | && !loc->pspace->executing_startup) |
0d381245 VP |
13215 | return 0; |
13216 | return 1; | |
fe3f5fa8 VP |
13217 | } |
13218 | ||
776592bf DE |
13219 | /* Subroutine of update_breakpoint_locations to simplify it. |
13220 | Return non-zero if multiple fns in list LOC have the same name. | |
13221 | Null names are ignored. */ | |
13222 | ||
13223 | static int | |
13224 | ambiguous_names_p (struct bp_location *loc) | |
13225 | { | |
13226 | struct bp_location *l; | |
459a2e4c TT |
13227 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13228 | xcalloc, xfree); | |
776592bf DE |
13229 | |
13230 | for (l = loc; l != NULL; l = l->next) | |
13231 | { | |
13232 | const char **slot; | |
13233 | const char *name = l->function_name; | |
13234 | ||
13235 | /* Allow for some names to be NULL, ignore them. */ | |
13236 | if (name == NULL) | |
13237 | continue; | |
13238 | ||
13239 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13240 | INSERT); | |
4a64f543 MS |
13241 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13242 | returns NULL. */ | |
776592bf DE |
13243 | if (*slot != NULL) |
13244 | { | |
13245 | htab_delete (htab); | |
13246 | return 1; | |
13247 | } | |
13248 | *slot = name; | |
13249 | } | |
13250 | ||
13251 | htab_delete (htab); | |
13252 | return 0; | |
13253 | } | |
13254 | ||
0fb4aa4b PA |
13255 | /* When symbols change, it probably means the sources changed as well, |
13256 | and it might mean the static tracepoint markers are no longer at | |
13257 | the same address or line numbers they used to be at last we | |
13258 | checked. Losing your static tracepoints whenever you rebuild is | |
13259 | undesirable. This function tries to resync/rematch gdb static | |
13260 | tracepoints with the markers on the target, for static tracepoints | |
13261 | that have not been set by marker id. Static tracepoint that have | |
13262 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13263 | The heuristic is: | |
13264 | ||
13265 | 1) For a tracepoint set at a specific address, look for a marker at | |
13266 | the old PC. If one is found there, assume to be the same marker. | |
13267 | If the name / string id of the marker found is different from the | |
13268 | previous known name, assume that means the user renamed the marker | |
13269 | in the sources, and output a warning. | |
13270 | ||
13271 | 2) For a tracepoint set at a given line number, look for a marker | |
13272 | at the new address of the old line number. If one is found there, | |
13273 | assume to be the same marker. If the name / string id of the | |
13274 | marker found is different from the previous known name, assume that | |
13275 | means the user renamed the marker in the sources, and output a | |
13276 | warning. | |
13277 | ||
13278 | 3) If a marker is no longer found at the same address or line, it | |
13279 | may mean the marker no longer exists. But it may also just mean | |
13280 | the code changed a bit. Maybe the user added a few lines of code | |
13281 | that made the marker move up or down (in line number terms). Ask | |
13282 | the target for info about the marker with the string id as we knew | |
13283 | it. If found, update line number and address in the matching | |
13284 | static tracepoint. This will get confused if there's more than one | |
13285 | marker with the same ID (possible in UST, although unadvised | |
13286 | precisely because it confuses tools). */ | |
13287 | ||
13288 | static struct symtab_and_line | |
13289 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13290 | { | |
d9b3f62e | 13291 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13292 | struct static_tracepoint_marker marker; |
13293 | CORE_ADDR pc; | |
0fb4aa4b PA |
13294 | |
13295 | pc = sal.pc; | |
13296 | if (sal.line) | |
13297 | find_line_pc (sal.symtab, sal.line, &pc); | |
13298 | ||
13299 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13300 | { | |
5d9310c4 | 13301 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13302 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13303 | b->number, tp->static_trace_marker_id.c_str (), |
13304 | marker.str_id.c_str ()); | |
0fb4aa4b | 13305 | |
5d9310c4 | 13306 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13307 | |
13308 | return sal; | |
13309 | } | |
13310 | ||
13311 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13312 | by string ID. */ | |
13313 | if (!sal.explicit_pc | |
13314 | && sal.line != 0 | |
13315 | && sal.symtab != NULL | |
5d9310c4 | 13316 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13317 | { |
5d9310c4 SM |
13318 | std::vector<static_tracepoint_marker> markers |
13319 | = target_static_tracepoint_markers_by_strid | |
13320 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13321 | |
5d9310c4 | 13322 | if (!markers.empty ()) |
0fb4aa4b | 13323 | { |
0fb4aa4b | 13324 | struct symbol *sym; |
80e1d417 | 13325 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13326 | struct ui_out *uiout = current_uiout; |
67994074 | 13327 | struct explicit_location explicit_loc; |
0fb4aa4b | 13328 | |
5d9310c4 | 13329 | tpmarker = &markers[0]; |
0fb4aa4b | 13330 | |
5d9310c4 | 13331 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13332 | |
13333 | warning (_("marker for static tracepoint %d (%s) not " | |
13334 | "found at previous line number"), | |
5d9310c4 | 13335 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13336 | |
51abb421 | 13337 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13338 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13339 | uiout->text ("Now in "); |
0fb4aa4b PA |
13340 | if (sym) |
13341 | { | |
987012b8 | 13342 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13343 | function_name_style.style ()); |
112e8700 | 13344 | uiout->text (" at "); |
0fb4aa4b | 13345 | } |
112e8700 | 13346 | uiout->field_string ("file", |
cbe56571 | 13347 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13348 | file_name_style.style ()); |
112e8700 | 13349 | uiout->text (":"); |
0fb4aa4b | 13350 | |
112e8700 | 13351 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13352 | { |
0b0865da | 13353 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13354 | |
112e8700 | 13355 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13356 | } |
13357 | ||
381befee | 13358 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13359 | uiout->text ("\n"); |
0fb4aa4b | 13360 | |
80e1d417 | 13361 | b->loc->line_number = sal2.line; |
2f202fde | 13362 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13363 | |
d28cd78a | 13364 | b->location.reset (NULL); |
67994074 KS |
13365 | initialize_explicit_location (&explicit_loc); |
13366 | explicit_loc.source_filename | |
00e52e53 | 13367 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13368 | explicit_loc.line_offset.offset = b->loc->line_number; |
13369 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13370 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13371 | |
13372 | /* Might be nice to check if function changed, and warn if | |
13373 | so. */ | |
0fb4aa4b PA |
13374 | } |
13375 | } | |
13376 | return sal; | |
13377 | } | |
13378 | ||
8d3788bd VP |
13379 | /* Returns 1 iff locations A and B are sufficiently same that |
13380 | we don't need to report breakpoint as changed. */ | |
13381 | ||
13382 | static int | |
13383 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13384 | { | |
13385 | while (a && b) | |
13386 | { | |
13387 | if (a->address != b->address) | |
13388 | return 0; | |
13389 | ||
13390 | if (a->shlib_disabled != b->shlib_disabled) | |
13391 | return 0; | |
13392 | ||
13393 | if (a->enabled != b->enabled) | |
13394 | return 0; | |
13395 | ||
13396 | a = a->next; | |
13397 | b = b->next; | |
13398 | } | |
13399 | ||
13400 | if ((a == NULL) != (b == NULL)) | |
13401 | return 0; | |
13402 | ||
13403 | return 1; | |
13404 | } | |
13405 | ||
c2f4122d PA |
13406 | /* Split all locations of B that are bound to PSPACE out of B's |
13407 | location list to a separate list and return that list's head. If | |
13408 | PSPACE is NULL, hoist out all locations of B. */ | |
13409 | ||
13410 | static struct bp_location * | |
13411 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13412 | { | |
13413 | struct bp_location head; | |
13414 | struct bp_location *i = b->loc; | |
13415 | struct bp_location **i_link = &b->loc; | |
13416 | struct bp_location *hoisted = &head; | |
13417 | ||
13418 | if (pspace == NULL) | |
13419 | { | |
13420 | i = b->loc; | |
13421 | b->loc = NULL; | |
13422 | return i; | |
13423 | } | |
13424 | ||
13425 | head.next = NULL; | |
13426 | ||
13427 | while (i != NULL) | |
13428 | { | |
13429 | if (i->pspace == pspace) | |
13430 | { | |
13431 | *i_link = i->next; | |
13432 | i->next = NULL; | |
13433 | hoisted->next = i; | |
13434 | hoisted = i; | |
13435 | } | |
13436 | else | |
13437 | i_link = &i->next; | |
13438 | i = *i_link; | |
13439 | } | |
13440 | ||
13441 | return head.next; | |
13442 | } | |
13443 | ||
13444 | /* Create new breakpoint locations for B (a hardware or software | |
13445 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13446 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13447 | FILTER_PSPACE. Locations of other program spaces are left | |
13448 | untouched. */ | |
f1310107 | 13449 | |
0e30163f | 13450 | void |
0d381245 | 13451 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13452 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13453 | gdb::array_view<const symtab_and_line> sals, |
13454 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13455 | { |
c2f4122d | 13456 | struct bp_location *existing_locations; |
0d381245 | 13457 | |
6c5b2ebe | 13458 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13459 | { |
13460 | /* Ranged breakpoints have only one start location and one end | |
13461 | location. */ | |
13462 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13463 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13464 | "multiple locations found\n"), | |
13465 | b->number); | |
13466 | return; | |
13467 | } | |
f1310107 | 13468 | |
4a64f543 MS |
13469 | /* If there's no new locations, and all existing locations are |
13470 | pending, don't do anything. This optimizes the common case where | |
13471 | all locations are in the same shared library, that was unloaded. | |
13472 | We'd like to retain the location, so that when the library is | |
13473 | loaded again, we don't loose the enabled/disabled status of the | |
13474 | individual locations. */ | |
6c5b2ebe | 13475 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13476 | return; |
13477 | ||
c2f4122d | 13478 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13479 | |
6c5b2ebe | 13480 | for (const auto &sal : sals) |
fe3f5fa8 | 13481 | { |
f8eba3c6 TT |
13482 | struct bp_location *new_loc; |
13483 | ||
6c5b2ebe | 13484 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13485 | |
6c5b2ebe | 13486 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13487 | |
0d381245 VP |
13488 | /* Reparse conditions, they might contain references to the |
13489 | old symtab. */ | |
13490 | if (b->cond_string != NULL) | |
13491 | { | |
bbc13ae3 | 13492 | const char *s; |
fe3f5fa8 | 13493 | |
0d381245 | 13494 | s = b->cond_string; |
a70b8144 | 13495 | try |
0d381245 | 13496 | { |
6c5b2ebe PA |
13497 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13498 | block_for_pc (sal.pc), | |
0d381245 VP |
13499 | 0); |
13500 | } | |
230d2906 | 13501 | catch (const gdb_exception_error &e) |
0d381245 | 13502 | { |
3e43a32a MS |
13503 | warning (_("failed to reevaluate condition " |
13504 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13505 | b->number, e.what ()); |
0d381245 VP |
13506 | new_loc->enabled = 0; |
13507 | } | |
13508 | } | |
fe3f5fa8 | 13509 | |
6c5b2ebe | 13510 | if (!sals_end.empty ()) |
f1310107 | 13511 | { |
6c5b2ebe | 13512 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13513 | |
6c5b2ebe | 13514 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13515 | } |
0d381245 | 13516 | } |
fe3f5fa8 | 13517 | |
4a64f543 MS |
13518 | /* If possible, carry over 'disable' status from existing |
13519 | breakpoints. */ | |
0d381245 VP |
13520 | { |
13521 | struct bp_location *e = existing_locations; | |
776592bf DE |
13522 | /* If there are multiple breakpoints with the same function name, |
13523 | e.g. for inline functions, comparing function names won't work. | |
13524 | Instead compare pc addresses; this is just a heuristic as things | |
13525 | may have moved, but in practice it gives the correct answer | |
13526 | often enough until a better solution is found. */ | |
13527 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13528 | ||
0d381245 VP |
13529 | for (; e; e = e->next) |
13530 | { | |
13531 | if (!e->enabled && e->function_name) | |
13532 | { | |
13533 | struct bp_location *l = b->loc; | |
776592bf DE |
13534 | if (have_ambiguous_names) |
13535 | { | |
13536 | for (; l; l = l->next) | |
f1310107 | 13537 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13538 | { |
13539 | l->enabled = 0; | |
13540 | break; | |
13541 | } | |
13542 | } | |
13543 | else | |
13544 | { | |
13545 | for (; l; l = l->next) | |
13546 | if (l->function_name | |
13547 | && strcmp (e->function_name, l->function_name) == 0) | |
13548 | { | |
13549 | l->enabled = 0; | |
13550 | break; | |
13551 | } | |
13552 | } | |
0d381245 VP |
13553 | } |
13554 | } | |
13555 | } | |
fe3f5fa8 | 13556 | |
8d3788bd | 13557 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13558 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13559 | } |
13560 | ||
f00aae0f | 13561 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13562 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13563 | ||
6c5b2ebe | 13564 | static std::vector<symtab_and_line> |
f00aae0f | 13565 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13566 | struct program_space *search_pspace, int *found) |
ef23e705 | 13567 | { |
cc06b668 | 13568 | struct gdb_exception exception; |
ef23e705 | 13569 | |
983af33b | 13570 | gdb_assert (b->ops != NULL); |
ef23e705 | 13571 | |
6c5b2ebe PA |
13572 | std::vector<symtab_and_line> sals; |
13573 | ||
a70b8144 | 13574 | try |
ef23e705 | 13575 | { |
6c5b2ebe | 13576 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13577 | } |
94aeb44b | 13578 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13579 | { |
13580 | int not_found_and_ok = 0; | |
492d29ea | 13581 | |
ef23e705 TJB |
13582 | /* For pending breakpoints, it's expected that parsing will |
13583 | fail until the right shared library is loaded. User has | |
13584 | already told to create pending breakpoints and don't need | |
13585 | extra messages. If breakpoint is in bp_shlib_disabled | |
13586 | state, then user already saw the message about that | |
13587 | breakpoint being disabled, and don't want to see more | |
13588 | errors. */ | |
58438ac1 | 13589 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13590 | && (b->condition_not_parsed |
13591 | || (b->loc != NULL | |
13592 | && search_pspace != NULL | |
13593 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13594 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13595 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13596 | || b->enable_state == bp_disabled)) |
13597 | not_found_and_ok = 1; | |
13598 | ||
13599 | if (!not_found_and_ok) | |
13600 | { | |
13601 | /* We surely don't want to warn about the same breakpoint | |
13602 | 10 times. One solution, implemented here, is disable | |
13603 | the breakpoint on error. Another solution would be to | |
13604 | have separate 'warning emitted' flag. Since this | |
13605 | happens only when a binary has changed, I don't know | |
13606 | which approach is better. */ | |
13607 | b->enable_state = bp_disabled; | |
eedc3f4f | 13608 | throw; |
ef23e705 | 13609 | } |
94aeb44b TT |
13610 | |
13611 | exception = std::move (e); | |
ef23e705 TJB |
13612 | } |
13613 | ||
492d29ea | 13614 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13615 | { |
6c5b2ebe PA |
13616 | for (auto &sal : sals) |
13617 | resolve_sal_pc (&sal); | |
f00aae0f | 13618 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13619 | { |
ed1d1739 KS |
13620 | char *cond_string, *extra_string; |
13621 | int thread, task; | |
ef23e705 | 13622 | |
6c5b2ebe | 13623 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13624 | &cond_string, &thread, &task, |
13625 | &extra_string); | |
f00aae0f | 13626 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13627 | if (cond_string) |
13628 | b->cond_string = cond_string; | |
13629 | b->thread = thread; | |
13630 | b->task = task; | |
e7e0cddf | 13631 | if (extra_string) |
f00aae0f KS |
13632 | { |
13633 | xfree (b->extra_string); | |
13634 | b->extra_string = extra_string; | |
13635 | } | |
ef23e705 TJB |
13636 | b->condition_not_parsed = 0; |
13637 | } | |
13638 | ||
983af33b | 13639 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13640 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13641 | |
58438ac1 TT |
13642 | *found = 1; |
13643 | } | |
13644 | else | |
13645 | *found = 0; | |
ef23e705 TJB |
13646 | |
13647 | return sals; | |
13648 | } | |
13649 | ||
348d480f PA |
13650 | /* The default re_set method, for typical hardware or software |
13651 | breakpoints. Reevaluate the breakpoint and recreate its | |
13652 | locations. */ | |
13653 | ||
13654 | static void | |
28010a5d | 13655 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13656 | { |
c2f4122d | 13657 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13658 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13659 | |
6c5b2ebe PA |
13660 | int found; |
13661 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13662 | filter_pspace, &found); | |
ef23e705 | 13663 | if (found) |
6c5b2ebe | 13664 | expanded = std::move (sals); |
ef23e705 | 13665 | |
f00aae0f | 13666 | if (b->location_range_end != NULL) |
f1310107 | 13667 | { |
6c5b2ebe PA |
13668 | std::vector<symtab_and_line> sals_end |
13669 | = location_to_sals (b, b->location_range_end.get (), | |
13670 | filter_pspace, &found); | |
f1310107 | 13671 | if (found) |
6c5b2ebe | 13672 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13673 | } |
13674 | ||
c2f4122d | 13675 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13676 | } |
13677 | ||
983af33b SDJ |
13678 | /* Default method for creating SALs from an address string. It basically |
13679 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13680 | ||
13681 | static void | |
f00aae0f KS |
13682 | create_sals_from_location_default (const struct event_location *location, |
13683 | struct linespec_result *canonical, | |
13684 | enum bptype type_wanted) | |
983af33b | 13685 | { |
f00aae0f | 13686 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13687 | } |
13688 | ||
13689 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13690 | function for the `create_breakpoints_sal' method of | |
13691 | breakpoint_ops. */ | |
13692 | ||
13693 | static void | |
13694 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13695 | struct linespec_result *canonical, | |
e1e01040 PA |
13696 | gdb::unique_xmalloc_ptr<char> cond_string, |
13697 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13698 | enum bptype type_wanted, |
13699 | enum bpdisp disposition, | |
13700 | int thread, | |
13701 | int task, int ignore_count, | |
13702 | const struct breakpoint_ops *ops, | |
13703 | int from_tty, int enabled, | |
44f238bb | 13704 | int internal, unsigned flags) |
983af33b | 13705 | { |
e1e01040 PA |
13706 | create_breakpoints_sal (gdbarch, canonical, |
13707 | std::move (cond_string), | |
13708 | std::move (extra_string), | |
983af33b SDJ |
13709 | type_wanted, disposition, |
13710 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13711 | enabled, internal, flags); |
983af33b SDJ |
13712 | } |
13713 | ||
13714 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13715 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13716 | |
6c5b2ebe | 13717 | static std::vector<symtab_and_line> |
f00aae0f KS |
13718 | decode_location_default (struct breakpoint *b, |
13719 | const struct event_location *location, | |
6c5b2ebe | 13720 | struct program_space *search_pspace) |
983af33b SDJ |
13721 | { |
13722 | struct linespec_result canonical; | |
13723 | ||
c2f4122d | 13724 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13725 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13726 | b->filter.get ()); |
983af33b SDJ |
13727 | |
13728 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13729 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13730 | |
6c5b2ebe | 13731 | if (!canonical.lsals.empty ()) |
983af33b | 13732 | { |
6c5b2ebe PA |
13733 | const linespec_sals &lsal = canonical.lsals[0]; |
13734 | return std::move (lsal.sals); | |
983af33b | 13735 | } |
6c5b2ebe | 13736 | return {}; |
983af33b SDJ |
13737 | } |
13738 | ||
bf469271 | 13739 | /* Reset a breakpoint. */ |
c906108c | 13740 | |
bf469271 PA |
13741 | static void |
13742 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13743 | { |
fdf44873 TT |
13744 | input_radix = b->input_radix; |
13745 | set_language (b->language); | |
c906108c | 13746 | |
348d480f | 13747 | b->ops->re_set (b); |
c906108c SS |
13748 | } |
13749 | ||
c2f4122d PA |
13750 | /* Re-set breakpoint locations for the current program space. |
13751 | Locations bound to other program spaces are left untouched. */ | |
13752 | ||
c906108c | 13753 | void |
69de3c6a | 13754 | breakpoint_re_set (void) |
c906108c | 13755 | { |
35df4500 | 13756 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13757 | |
c5aa993b | 13758 | { |
fdf44873 TT |
13759 | scoped_restore_current_language save_language; |
13760 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13761 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13762 | |
8e817061 JB |
13763 | /* breakpoint_re_set_one sets the current_language to the language |
13764 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13765 | before re-evaluating the breakpoint's location. This change can | |
13766 | unfortunately get undone by accident if the language_mode is set | |
13767 | to auto, and we either switch frames, or more likely in this context, | |
13768 | we select the current frame. | |
13769 | ||
13770 | We prevent this by temporarily turning the language_mode to | |
13771 | language_mode_manual. We restore it once all breakpoints | |
13772 | have been reset. */ | |
13773 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13774 | language_mode = language_mode_manual; | |
13775 | ||
5ed8105e PA |
13776 | /* Note: we must not try to insert locations until after all |
13777 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13778 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13779 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13780 | |
5ed8105e PA |
13781 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13782 | { | |
a70b8144 | 13783 | try |
bf469271 PA |
13784 | { |
13785 | breakpoint_re_set_one (b); | |
13786 | } | |
230d2906 | 13787 | catch (const gdb_exception &ex) |
bf469271 PA |
13788 | { |
13789 | exception_fprintf (gdb_stderr, ex, | |
13790 | "Error in re-setting breakpoint %d: ", | |
13791 | b->number); | |
13792 | } | |
5ed8105e | 13793 | } |
5ed8105e PA |
13794 | |
13795 | jit_breakpoint_re_set (); | |
13796 | } | |
6c95b8df | 13797 | |
af02033e PP |
13798 | create_overlay_event_breakpoint (); |
13799 | create_longjmp_master_breakpoint (); | |
13800 | create_std_terminate_master_breakpoint (); | |
186c406b | 13801 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13802 | |
13803 | /* Now we can insert. */ | |
13804 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13805 | } |
13806 | \f | |
c906108c SS |
13807 | /* Reset the thread number of this breakpoint: |
13808 | ||
13809 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13810 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13811 | void |
fba45db2 | 13812 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13813 | { |
13814 | if (b->thread != -1) | |
13815 | { | |
00431a78 | 13816 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13817 | |
13818 | /* We're being called after following a fork. The new fork is | |
13819 | selected as current, and unless this was a vfork will have a | |
13820 | different program space from the original thread. Reset that | |
13821 | as well. */ | |
13822 | b->loc->pspace = current_program_space; | |
c906108c SS |
13823 | } |
13824 | } | |
13825 | ||
03ac34d5 MS |
13826 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13827 | If from_tty is nonzero, it prints a message to that effect, | |
13828 | which ends with a period (no newline). */ | |
13829 | ||
c906108c | 13830 | void |
fba45db2 | 13831 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13832 | { |
52f0bd74 | 13833 | struct breakpoint *b; |
c906108c SS |
13834 | |
13835 | if (count < 0) | |
13836 | count = 0; | |
13837 | ||
13838 | ALL_BREAKPOINTS (b) | |
13839 | if (b->number == bptnum) | |
c5aa993b | 13840 | { |
d77f58be SS |
13841 | if (is_tracepoint (b)) |
13842 | { | |
13843 | if (from_tty && count != 0) | |
13844 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13845 | bptnum); | |
13846 | return; | |
13847 | } | |
13848 | ||
c5aa993b | 13849 | b->ignore_count = count; |
221ea385 KS |
13850 | if (from_tty) |
13851 | { | |
13852 | if (count == 0) | |
3e43a32a MS |
13853 | printf_filtered (_("Will stop next time " |
13854 | "breakpoint %d is reached."), | |
221ea385 KS |
13855 | bptnum); |
13856 | else if (count == 1) | |
a3f17187 | 13857 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13858 | bptnum); |
13859 | else | |
3e43a32a MS |
13860 | printf_filtered (_("Will ignore next %d " |
13861 | "crossings of breakpoint %d."), | |
221ea385 KS |
13862 | count, bptnum); |
13863 | } | |
76727919 | 13864 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13865 | return; |
13866 | } | |
c906108c | 13867 | |
8a3fe4f8 | 13868 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13869 | } |
13870 | ||
c906108c SS |
13871 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13872 | ||
13873 | static void | |
0b39b52e | 13874 | ignore_command (const char *args, int from_tty) |
c906108c | 13875 | { |
0b39b52e | 13876 | const char *p = args; |
52f0bd74 | 13877 | int num; |
c906108c SS |
13878 | |
13879 | if (p == 0) | |
e2e0b3e5 | 13880 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13881 | |
c906108c | 13882 | num = get_number (&p); |
5c44784c | 13883 | if (num == 0) |
8a3fe4f8 | 13884 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13885 | if (*p == 0) |
8a3fe4f8 | 13886 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13887 | |
13888 | set_ignore_count (num, | |
13889 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13890 | from_tty); | |
221ea385 KS |
13891 | if (from_tty) |
13892 | printf_filtered ("\n"); | |
c906108c SS |
13893 | } |
13894 | \f | |
d0fe4701 XR |
13895 | |
13896 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13897 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13898 | |
13899 | static void | |
d0fe4701 XR |
13900 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13901 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13902 | { |
d0fe4701 XR |
13903 | if (bp_num_range.first == 0) |
13904 | { | |
13905 | warning (_("bad breakpoint number at or near '%d'"), | |
13906 | bp_num_range.first); | |
13907 | } | |
13908 | else | |
c906108c | 13909 | { |
d0fe4701 | 13910 | struct breakpoint *b, *tmp; |
197f0a60 | 13911 | |
d0fe4701 | 13912 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13913 | { |
d0fe4701 XR |
13914 | bool match = false; |
13915 | ||
5c44784c | 13916 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13917 | if (b->number == i) |
5c44784c | 13918 | { |
bfd28288 | 13919 | match = true; |
48649e1b | 13920 | function (b); |
11cf8741 | 13921 | break; |
5c44784c | 13922 | } |
bfd28288 | 13923 | if (!match) |
d0fe4701 | 13924 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13925 | } |
c906108c SS |
13926 | } |
13927 | } | |
13928 | ||
d0fe4701 XR |
13929 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13930 | ARGS. */ | |
13931 | ||
13932 | static void | |
13933 | map_breakpoint_numbers (const char *args, | |
13934 | gdb::function_view<void (breakpoint *)> function) | |
13935 | { | |
13936 | if (args == NULL || *args == '\0') | |
13937 | error_no_arg (_("one or more breakpoint numbers")); | |
13938 | ||
13939 | number_or_range_parser parser (args); | |
13940 | ||
13941 | while (!parser.finished ()) | |
13942 | { | |
13943 | int num = parser.get_number (); | |
13944 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13945 | } | |
13946 | } | |
13947 | ||
13948 | /* Return the breakpoint location structure corresponding to the | |
13949 | BP_NUM and LOC_NUM values. */ | |
13950 | ||
0d381245 | 13951 | static struct bp_location * |
d0fe4701 | 13952 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13953 | { |
0d381245 | 13954 | struct breakpoint *b; |
0d381245 VP |
13955 | |
13956 | ALL_BREAKPOINTS (b) | |
13957 | if (b->number == bp_num) | |
13958 | { | |
13959 | break; | |
13960 | } | |
13961 | ||
13962 | if (!b || b->number != bp_num) | |
d0fe4701 | 13963 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13964 | |
0d381245 | 13965 | if (loc_num == 0) |
d0fe4701 | 13966 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13967 | |
d0fe4701 XR |
13968 | int n = 0; |
13969 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13970 | if (++n == loc_num) | |
13971 | return loc; | |
13972 | ||
13973 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13974 | } |
13975 | ||
95e95a6d PA |
13976 | /* Modes of operation for extract_bp_num. */ |
13977 | enum class extract_bp_kind | |
13978 | { | |
13979 | /* Extracting a breakpoint number. */ | |
13980 | bp, | |
13981 | ||
13982 | /* Extracting a location number. */ | |
13983 | loc, | |
13984 | }; | |
13985 | ||
13986 | /* Extract a breakpoint or location number (as determined by KIND) | |
13987 | from the string starting at START. TRAILER is a character which | |
13988 | can be found after the number. If you don't want a trailer, use | |
13989 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13990 | string. This always returns a positive integer. */ | |
13991 | ||
13992 | static int | |
13993 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13994 | int trailer, const char **end_out = NULL) | |
13995 | { | |
13996 | const char *end = start; | |
13997 | int num = get_number_trailer (&end, trailer); | |
13998 | if (num < 0) | |
13999 | error (kind == extract_bp_kind::bp | |
14000 | ? _("Negative breakpoint number '%.*s'") | |
14001 | : _("Negative breakpoint location number '%.*s'"), | |
14002 | int (end - start), start); | |
14003 | if (num == 0) | |
14004 | error (kind == extract_bp_kind::bp | |
14005 | ? _("Bad breakpoint number '%.*s'") | |
14006 | : _("Bad breakpoint location number '%.*s'"), | |
14007 | int (end - start), start); | |
14008 | ||
14009 | if (end_out != NULL) | |
14010 | *end_out = end; | |
14011 | return num; | |
14012 | } | |
14013 | ||
14014 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14015 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14016 | representing the (inclusive) range. The returned pair's elements | |
14017 | are always positive integers. */ | |
14018 | ||
14019 | static std::pair<int, int> | |
14020 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14021 | const std::string &arg, | |
14022 | std::string::size_type arg_offset) | |
14023 | { | |
14024 | std::pair<int, int> range; | |
14025 | const char *bp_loc = &arg[arg_offset]; | |
14026 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14027 | if (dash != std::string::npos) | |
14028 | { | |
14029 | /* bp_loc is a range (x-z). */ | |
14030 | if (arg.length () == dash + 1) | |
14031 | error (kind == extract_bp_kind::bp | |
14032 | ? _("Bad breakpoint number at or near: '%s'") | |
14033 | : _("Bad breakpoint location number at or near: '%s'"), | |
14034 | bp_loc); | |
14035 | ||
14036 | const char *end; | |
14037 | const char *start_first = bp_loc; | |
14038 | const char *start_second = &arg[dash + 1]; | |
14039 | range.first = extract_bp_num (kind, start_first, '-'); | |
14040 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14041 | ||
14042 | if (range.first > range.second) | |
14043 | error (kind == extract_bp_kind::bp | |
14044 | ? _("Inverted breakpoint range at '%.*s'") | |
14045 | : _("Inverted breakpoint location range at '%.*s'"), | |
14046 | int (end - start_first), start_first); | |
14047 | } | |
14048 | else | |
14049 | { | |
14050 | /* bp_loc is a single value. */ | |
14051 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14052 | range.second = range.first; | |
14053 | } | |
14054 | return range; | |
14055 | } | |
14056 | ||
d0fe4701 XR |
14057 | /* Extract the breakpoint/location range specified by ARG. Returns |
14058 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14059 | BP_LOC_RANGE. | |
14060 | ||
14061 | ARG may be in any of the following forms: | |
14062 | ||
14063 | x where 'x' is a breakpoint number. | |
14064 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14065 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14066 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14067 | location number range. | |
14068 | */ | |
14069 | ||
cc638e86 | 14070 | static void |
d0fe4701 XR |
14071 | extract_bp_number_and_location (const std::string &arg, |
14072 | std::pair<int, int> &bp_num_range, | |
14073 | std::pair<int, int> &bp_loc_range) | |
14074 | { | |
14075 | std::string::size_type dot = arg.find ('.'); | |
14076 | ||
14077 | if (dot != std::string::npos) | |
14078 | { | |
14079 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14080 | ||
14081 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14082 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14083 | |
95e95a6d PA |
14084 | bp_num_range.first |
14085 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14086 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14087 | |
95e95a6d PA |
14088 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14089 | arg, dot + 1); | |
d0fe4701 XR |
14090 | } |
14091 | else | |
14092 | { | |
14093 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14094 | |
95e95a6d | 14095 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14096 | bp_loc_range.first = 0; |
14097 | bp_loc_range.second = 0; | |
14098 | } | |
d0fe4701 XR |
14099 | } |
14100 | ||
14101 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14102 | specifies whether to enable or disable. */ | |
14103 | ||
14104 | static void | |
14105 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14106 | { | |
14107 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14108 | if (loc != NULL) | |
14109 | { | |
14110 | if (loc->enabled != enable) | |
14111 | { | |
14112 | loc->enabled = enable; | |
14113 | mark_breakpoint_location_modified (loc); | |
14114 | } | |
14115 | if (target_supports_enable_disable_tracepoint () | |
14116 | && current_trace_status ()->running && loc->owner | |
14117 | && is_tracepoint (loc->owner)) | |
14118 | target_disable_tracepoint (loc); | |
14119 | } | |
14120 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14121 | |
14122 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14123 | } |
14124 | ||
14125 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14126 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14127 | (inclusive) range of location numbers of that breakpoint to | |
14128 | enable/disable. ENABLE specifies whether to enable or disable the | |
14129 | location. */ | |
14130 | ||
14131 | static void | |
14132 | enable_disable_breakpoint_location_range (int bp_num, | |
14133 | std::pair<int, int> &bp_loc_range, | |
14134 | bool enable) | |
14135 | { | |
14136 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14137 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14138 | } | |
0d381245 | 14139 | |
1900040c MS |
14140 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14141 | If from_tty is nonzero, it prints a message to that effect, | |
14142 | which ends with a period (no newline). */ | |
14143 | ||
c906108c | 14144 | void |
fba45db2 | 14145 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14146 | { |
14147 | /* Never disable a watchpoint scope breakpoint; we want to | |
14148 | hit them when we leave scope so we can delete both the | |
14149 | watchpoint and its scope breakpoint at that time. */ | |
14150 | if (bpt->type == bp_watchpoint_scope) | |
14151 | return; | |
14152 | ||
b5de0fa7 | 14153 | bpt->enable_state = bp_disabled; |
c906108c | 14154 | |
b775012e LM |
14155 | /* Mark breakpoint locations modified. */ |
14156 | mark_breakpoint_modified (bpt); | |
14157 | ||
d248b706 KY |
14158 | if (target_supports_enable_disable_tracepoint () |
14159 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14160 | { | |
14161 | struct bp_location *location; | |
14162 | ||
14163 | for (location = bpt->loc; location; location = location->next) | |
14164 | target_disable_tracepoint (location); | |
14165 | } | |
14166 | ||
44702360 | 14167 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14168 | |
76727919 | 14169 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14170 | } |
14171 | ||
d0fe4701 XR |
14172 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14173 | specified in ARGS. ARGS may be in any of the formats handled by | |
14174 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14175 | or disable the breakpoints/locations. */ | |
14176 | ||
c906108c | 14177 | static void |
d0fe4701 | 14178 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14179 | { |
c906108c | 14180 | if (args == 0) |
46c6471b PA |
14181 | { |
14182 | struct breakpoint *bpt; | |
14183 | ||
14184 | ALL_BREAKPOINTS (bpt) | |
14185 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14186 | { |
14187 | if (enable) | |
14188 | enable_breakpoint (bpt); | |
14189 | else | |
14190 | disable_breakpoint (bpt); | |
14191 | } | |
46c6471b | 14192 | } |
9eaabc75 | 14193 | else |
0d381245 | 14194 | { |
cb791d59 | 14195 | std::string num = extract_arg (&args); |
9eaabc75 | 14196 | |
cb791d59 | 14197 | while (!num.empty ()) |
d248b706 | 14198 | { |
d0fe4701 | 14199 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14200 | |
cc638e86 PA |
14201 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14202 | ||
14203 | if (bp_loc_range.first == bp_loc_range.second | |
14204 | && bp_loc_range.first == 0) | |
d0fe4701 | 14205 | { |
cc638e86 PA |
14206 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14207 | map_breakpoint_number_range (bp_num_range, | |
14208 | enable | |
14209 | ? enable_breakpoint | |
14210 | : disable_breakpoint); | |
14211 | } | |
14212 | else | |
14213 | { | |
14214 | /* Handle breakpoint ids with formats 'x.y' or | |
14215 | 'x.y-z'. */ | |
14216 | enable_disable_breakpoint_location_range | |
14217 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14218 | } |
9eaabc75 | 14219 | num = extract_arg (&args); |
d248b706 | 14220 | } |
0d381245 | 14221 | } |
c906108c SS |
14222 | } |
14223 | ||
d0fe4701 XR |
14224 | /* The disable command disables the specified breakpoints/locations |
14225 | (or all defined breakpoints) so they're no longer effective in | |
14226 | stopping the inferior. ARGS may be in any of the forms defined in | |
14227 | extract_bp_number_and_location. */ | |
14228 | ||
14229 | static void | |
14230 | disable_command (const char *args, int from_tty) | |
14231 | { | |
14232 | enable_disable_command (args, from_tty, false); | |
14233 | } | |
14234 | ||
c906108c | 14235 | static void |
816338b5 SS |
14236 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14237 | int count) | |
c906108c | 14238 | { |
afe38095 | 14239 | int target_resources_ok; |
c906108c SS |
14240 | |
14241 | if (bpt->type == bp_hardware_breakpoint) | |
14242 | { | |
14243 | int i; | |
c5aa993b | 14244 | i = hw_breakpoint_used_count (); |
53a5351d | 14245 | target_resources_ok = |
d92524f1 | 14246 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14247 | i + 1, 0); |
c906108c | 14248 | if (target_resources_ok == 0) |
8a3fe4f8 | 14249 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14250 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14251 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14252 | } |
14253 | ||
cc60f2e3 | 14254 | if (is_watchpoint (bpt)) |
c906108c | 14255 | { |
d07205c2 | 14256 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14257 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14258 | |
a70b8144 | 14259 | try |
c906108c | 14260 | { |
3a5c3e22 PA |
14261 | struct watchpoint *w = (struct watchpoint *) bpt; |
14262 | ||
1e718ff1 TJB |
14263 | orig_enable_state = bpt->enable_state; |
14264 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14265 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14266 | } |
230d2906 | 14267 | catch (const gdb_exception &e) |
c5aa993b | 14268 | { |
1e718ff1 | 14269 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14270 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14271 | bpt->number); | |
14272 | return; | |
c5aa993b | 14273 | } |
c906108c | 14274 | } |
0101ce28 | 14275 | |
b775012e LM |
14276 | bpt->enable_state = bp_enabled; |
14277 | ||
14278 | /* Mark breakpoint locations modified. */ | |
14279 | mark_breakpoint_modified (bpt); | |
14280 | ||
d248b706 KY |
14281 | if (target_supports_enable_disable_tracepoint () |
14282 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14283 | { | |
14284 | struct bp_location *location; | |
14285 | ||
14286 | for (location = bpt->loc; location; location = location->next) | |
14287 | target_enable_tracepoint (location); | |
14288 | } | |
14289 | ||
b4c291bb | 14290 | bpt->disposition = disposition; |
816338b5 | 14291 | bpt->enable_count = count; |
44702360 | 14292 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14293 | |
76727919 | 14294 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14295 | } |
14296 | ||
fe3f5fa8 | 14297 | |
c906108c | 14298 | void |
fba45db2 | 14299 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14300 | { |
816338b5 | 14301 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14302 | } |
14303 | ||
d0fe4701 XR |
14304 | /* The enable command enables the specified breakpoints/locations (or |
14305 | all defined breakpoints) so they once again become (or continue to | |
14306 | be) effective in stopping the inferior. ARGS may be in any of the | |
14307 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14308 | |
c906108c | 14309 | static void |
981a3fb3 | 14310 | enable_command (const char *args, int from_tty) |
c906108c | 14311 | { |
d0fe4701 | 14312 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14313 | } |
14314 | ||
c906108c | 14315 | static void |
4495129a | 14316 | enable_once_command (const char *args, int from_tty) |
c906108c | 14317 | { |
48649e1b TT |
14318 | map_breakpoint_numbers |
14319 | (args, [&] (breakpoint *b) | |
14320 | { | |
14321 | iterate_over_related_breakpoints | |
14322 | (b, [&] (breakpoint *bpt) | |
14323 | { | |
14324 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14325 | }); | |
14326 | }); | |
816338b5 SS |
14327 | } |
14328 | ||
14329 | static void | |
4495129a | 14330 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14331 | { |
b9d61307 SM |
14332 | int count; |
14333 | ||
14334 | if (args == NULL) | |
14335 | error_no_arg (_("hit count")); | |
14336 | ||
14337 | count = get_number (&args); | |
816338b5 | 14338 | |
48649e1b TT |
14339 | map_breakpoint_numbers |
14340 | (args, [&] (breakpoint *b) | |
14341 | { | |
14342 | iterate_over_related_breakpoints | |
14343 | (b, [&] (breakpoint *bpt) | |
14344 | { | |
14345 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14346 | }); | |
14347 | }); | |
c906108c SS |
14348 | } |
14349 | ||
c906108c | 14350 | static void |
4495129a | 14351 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14352 | { |
48649e1b TT |
14353 | map_breakpoint_numbers |
14354 | (args, [&] (breakpoint *b) | |
14355 | { | |
14356 | iterate_over_related_breakpoints | |
14357 | (b, [&] (breakpoint *bpt) | |
14358 | { | |
14359 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14360 | }); | |
14361 | }); | |
c906108c SS |
14362 | } |
14363 | \f | |
fa8d40ab | 14364 | static void |
981a3fb3 | 14365 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14366 | { |
14367 | } | |
14368 | ||
14369 | static void | |
981a3fb3 | 14370 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14371 | { |
14372 | } | |
14373 | ||
1f3b5d1b PP |
14374 | /* Invalidate last known value of any hardware watchpoint if |
14375 | the memory which that value represents has been written to by | |
14376 | GDB itself. */ | |
14377 | ||
14378 | static void | |
8de0566d YQ |
14379 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14380 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14381 | const bfd_byte *data) |
14382 | { | |
14383 | struct breakpoint *bp; | |
14384 | ||
14385 | ALL_BREAKPOINTS (bp) | |
14386 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14387 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14388 | { |
3a5c3e22 | 14389 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14390 | |
850645cf | 14391 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14392 | { |
14393 | struct bp_location *loc; | |
14394 | ||
14395 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14396 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14397 | && loc->address + loc->length > addr | |
14398 | && addr + len > loc->address) | |
14399 | { | |
3a5c3e22 | 14400 | wp->val = NULL; |
4c1d86d9 | 14401 | wp->val_valid = false; |
3a5c3e22 PA |
14402 | } |
14403 | } | |
1f3b5d1b PP |
14404 | } |
14405 | } | |
14406 | ||
8181d85f DJ |
14407 | /* Create and insert a breakpoint for software single step. */ |
14408 | ||
14409 | void | |
6c95b8df | 14410 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14411 | const address_space *aspace, |
4a64f543 | 14412 | CORE_ADDR next_pc) |
8181d85f | 14413 | { |
7c16b83e PA |
14414 | struct thread_info *tp = inferior_thread (); |
14415 | struct symtab_and_line sal; | |
14416 | CORE_ADDR pc = next_pc; | |
8181d85f | 14417 | |
34b7e8a6 PA |
14418 | if (tp->control.single_step_breakpoints == NULL) |
14419 | { | |
14420 | tp->control.single_step_breakpoints | |
5d5658a1 | 14421 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14422 | } |
8181d85f | 14423 | |
7c16b83e PA |
14424 | sal = find_pc_line (pc, 0); |
14425 | sal.pc = pc; | |
14426 | sal.section = find_pc_overlay (pc); | |
14427 | sal.explicit_pc = 1; | |
34b7e8a6 | 14428 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14429 | |
7c16b83e | 14430 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14431 | } |
14432 | ||
93f9a11f YQ |
14433 | /* Insert single step breakpoints according to the current state. */ |
14434 | ||
14435 | int | |
14436 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14437 | { | |
f5ea389a | 14438 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14439 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14440 | |
f5ea389a | 14441 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14442 | |
a0ff9e1a | 14443 | if (!next_pcs.empty ()) |
93f9a11f | 14444 | { |
f5ea389a | 14445 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14446 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14447 | |
a0ff9e1a | 14448 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14449 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14450 | ||
93f9a11f YQ |
14451 | return 1; |
14452 | } | |
14453 | else | |
14454 | return 0; | |
14455 | } | |
14456 | ||
34b7e8a6 | 14457 | /* See breakpoint.h. */ |
f02253f1 HZ |
14458 | |
14459 | int | |
7c16b83e | 14460 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14461 | const address_space *aspace, |
7c16b83e | 14462 | CORE_ADDR pc) |
1aafd4da | 14463 | { |
7c16b83e | 14464 | struct bp_location *loc; |
1aafd4da | 14465 | |
7c16b83e PA |
14466 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14467 | if (loc->inserted | |
14468 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14469 | return 1; | |
1aafd4da | 14470 | |
7c16b83e | 14471 | return 0; |
ef370185 JB |
14472 | } |
14473 | ||
14474 | /* Check whether a software single-step breakpoint is inserted at | |
14475 | PC. */ | |
14476 | ||
14477 | int | |
accd0bcd | 14478 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14479 | CORE_ADDR pc) |
14480 | { | |
34b7e8a6 PA |
14481 | struct breakpoint *bpt; |
14482 | ||
14483 | ALL_BREAKPOINTS (bpt) | |
14484 | { | |
14485 | if (bpt->type == bp_single_step | |
14486 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14487 | return 1; | |
14488 | } | |
14489 | return 0; | |
1aafd4da UW |
14490 | } |
14491 | ||
1042e4c0 SS |
14492 | /* Tracepoint-specific operations. */ |
14493 | ||
14494 | /* Set tracepoint count to NUM. */ | |
14495 | static void | |
14496 | set_tracepoint_count (int num) | |
14497 | { | |
14498 | tracepoint_count = num; | |
4fa62494 | 14499 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14500 | } |
14501 | ||
70221824 | 14502 | static void |
0b39b52e | 14503 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14504 | { |
ffc2605c TT |
14505 | event_location_up location = string_to_event_location (&arg, |
14506 | current_language); | |
bac7c5cf GB |
14507 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14508 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14509 | |
558a9d82 | 14510 | create_breakpoint (get_current_arch (), |
ffc2605c | 14511 | location.get (), |
f00aae0f | 14512 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14513 | 0 /* tempflag */, |
14514 | bp_tracepoint /* type_wanted */, | |
14515 | 0 /* Ignore count */, | |
14516 | pending_break_support, | |
14517 | ops, | |
14518 | from_tty, | |
14519 | 1 /* enabled */, | |
14520 | 0 /* internal */, 0); | |
1042e4c0 SS |
14521 | } |
14522 | ||
70221824 | 14523 | static void |
0b39b52e | 14524 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14525 | { |
ffc2605c TT |
14526 | event_location_up location = string_to_event_location (&arg, |
14527 | current_language); | |
558a9d82 | 14528 | create_breakpoint (get_current_arch (), |
ffc2605c | 14529 | location.get (), |
f00aae0f | 14530 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14531 | 0 /* tempflag */, |
14532 | bp_fast_tracepoint /* type_wanted */, | |
14533 | 0 /* Ignore count */, | |
14534 | pending_break_support, | |
14535 | &tracepoint_breakpoint_ops, | |
14536 | from_tty, | |
14537 | 1 /* enabled */, | |
14538 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14539 | } |
14540 | ||
14541 | /* strace command implementation. Creates a static tracepoint. */ | |
14542 | ||
70221824 | 14543 | static void |
0b39b52e | 14544 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14545 | { |
983af33b | 14546 | struct breakpoint_ops *ops; |
ffc2605c | 14547 | event_location_up location; |
983af33b SDJ |
14548 | |
14549 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14550 | or with a normal static tracepoint. */ | |
61012eef | 14551 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14552 | { |
14553 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14554 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14555 | } |
983af33b | 14556 | else |
f00aae0f KS |
14557 | { |
14558 | ops = &tracepoint_breakpoint_ops; | |
14559 | location = string_to_event_location (&arg, current_language); | |
14560 | } | |
983af33b | 14561 | |
558a9d82 | 14562 | create_breakpoint (get_current_arch (), |
ffc2605c | 14563 | location.get (), |
f00aae0f | 14564 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14565 | 0 /* tempflag */, |
14566 | bp_static_tracepoint /* type_wanted */, | |
14567 | 0 /* Ignore count */, | |
14568 | pending_break_support, | |
14569 | ops, | |
14570 | from_tty, | |
14571 | 1 /* enabled */, | |
14572 | 0 /* internal */, 0); | |
7a697b8d SS |
14573 | } |
14574 | ||
409873ef SS |
14575 | /* Set up a fake reader function that gets command lines from a linked |
14576 | list that was acquired during tracepoint uploading. */ | |
14577 | ||
14578 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14579 | static int next_cmd; |
409873ef SS |
14580 | |
14581 | static char * | |
14582 | read_uploaded_action (void) | |
14583 | { | |
a18ba4e4 | 14584 | char *rslt = nullptr; |
409873ef | 14585 | |
a18ba4e4 SM |
14586 | if (next_cmd < this_utp->cmd_strings.size ()) |
14587 | { | |
67aa1f3c | 14588 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14589 | next_cmd++; |
14590 | } | |
409873ef SS |
14591 | |
14592 | return rslt; | |
14593 | } | |
14594 | ||
00bf0b85 SS |
14595 | /* Given information about a tracepoint as recorded on a target (which |
14596 | can be either a live system or a trace file), attempt to create an | |
14597 | equivalent GDB tracepoint. This is not a reliable process, since | |
14598 | the target does not necessarily have all the information used when | |
14599 | the tracepoint was originally defined. */ | |
14600 | ||
d9b3f62e | 14601 | struct tracepoint * |
00bf0b85 | 14602 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14603 | { |
f2fc3015 TT |
14604 | const char *addr_str; |
14605 | char small_buf[100]; | |
d9b3f62e | 14606 | struct tracepoint *tp; |
fd9b8c24 | 14607 | |
409873ef | 14608 | if (utp->at_string) |
67aa1f3c | 14609 | addr_str = utp->at_string.get (); |
409873ef SS |
14610 | else |
14611 | { | |
14612 | /* In the absence of a source location, fall back to raw | |
14613 | address. Since there is no way to confirm that the address | |
14614 | means the same thing as when the trace was started, warn the | |
14615 | user. */ | |
3e43a32a MS |
14616 | warning (_("Uploaded tracepoint %d has no " |
14617 | "source location, using raw address"), | |
409873ef | 14618 | utp->number); |
8c042590 | 14619 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14620 | addr_str = small_buf; |
14621 | } | |
14622 | ||
14623 | /* There's not much we can do with a sequence of bytecodes. */ | |
14624 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14625 | warning (_("Uploaded tracepoint %d condition " |
14626 | "has no source form, ignoring it"), | |
409873ef | 14627 | utp->number); |
d5551862 | 14628 | |
ffc2605c TT |
14629 | event_location_up location = string_to_event_location (&addr_str, |
14630 | current_language); | |
8cdf0e15 | 14631 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14632 | location.get (), |
67aa1f3c | 14633 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14634 | 0 /* parse cond/thread */, |
8cdf0e15 | 14635 | 0 /* tempflag */, |
0fb4aa4b | 14636 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14637 | 0 /* Ignore count */, |
14638 | pending_break_support, | |
348d480f | 14639 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14640 | 0 /* from_tty */, |
84f4c1fe | 14641 | utp->enabled /* enabled */, |
44f238bb PA |
14642 | 0 /* internal */, |
14643 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14644 | return NULL; |
fd9b8c24 | 14645 | |
409873ef | 14646 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14647 | tp = get_tracepoint (tracepoint_count); |
14648 | gdb_assert (tp != NULL); | |
d5551862 | 14649 | |
00bf0b85 SS |
14650 | if (utp->pass > 0) |
14651 | { | |
8c042590 | 14652 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14653 | tp->number); |
00bf0b85 | 14654 | |
409873ef | 14655 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14656 | } |
14657 | ||
409873ef SS |
14658 | /* If we have uploaded versions of the original commands, set up a |
14659 | special-purpose "reader" function and call the usual command line | |
14660 | reader, then pass the result to the breakpoint command-setting | |
14661 | function. */ | |
a18ba4e4 | 14662 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14663 | { |
12973681 | 14664 | counted_command_line cmd_list; |
00bf0b85 | 14665 | |
409873ef | 14666 | this_utp = utp; |
3149d8c1 | 14667 | next_cmd = 0; |
d5551862 | 14668 | |
60b3cef2 | 14669 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14670 | |
c1fc2657 | 14671 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14672 | } |
a18ba4e4 SM |
14673 | else if (!utp->actions.empty () |
14674 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14675 | warning (_("Uploaded tracepoint %d actions " |
14676 | "have no source form, ignoring them"), | |
409873ef | 14677 | utp->number); |
00bf0b85 | 14678 | |
f196051f | 14679 | /* Copy any status information that might be available. */ |
c1fc2657 | 14680 | tp->hit_count = utp->hit_count; |
f196051f SS |
14681 | tp->traceframe_usage = utp->traceframe_usage; |
14682 | ||
00bf0b85 | 14683 | return tp; |
d9b3f62e | 14684 | } |
00bf0b85 | 14685 | |
1042e4c0 SS |
14686 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14687 | omitted. */ | |
14688 | ||
14689 | static void | |
1d12d88f | 14690 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14691 | { |
79a45e25 | 14692 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14693 | int num_printed; |
1042e4c0 | 14694 | |
5c458ae8 | 14695 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14696 | |
14697 | if (num_printed == 0) | |
1042e4c0 | 14698 | { |
e5a67952 | 14699 | if (args == NULL || *args == '\0') |
112e8700 | 14700 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14701 | else |
112e8700 | 14702 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14703 | } |
ad443146 SS |
14704 | |
14705 | default_collect_info (); | |
1042e4c0 SS |
14706 | } |
14707 | ||
4a64f543 | 14708 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14709 | Not supported by all targets. */ |
14710 | static void | |
5fed81ff | 14711 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14712 | { |
14713 | enable_command (args, from_tty); | |
14714 | } | |
14715 | ||
4a64f543 | 14716 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14717 | Not supported by all targets. */ |
14718 | static void | |
5fed81ff | 14719 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14720 | { |
14721 | disable_command (args, from_tty); | |
14722 | } | |
14723 | ||
4a64f543 | 14724 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14725 | static void |
4495129a | 14726 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14727 | { |
35df4500 | 14728 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14729 | |
14730 | dont_repeat (); | |
14731 | ||
14732 | if (arg == 0) | |
14733 | { | |
14734 | int breaks_to_delete = 0; | |
14735 | ||
14736 | /* Delete all breakpoints if no argument. | |
14737 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14738 | have to be deleted with an explicit breakpoint number |
14739 | argument. */ | |
1042e4c0 | 14740 | ALL_TRACEPOINTS (b) |
46c6471b | 14741 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14742 | { |
14743 | breaks_to_delete = 1; | |
14744 | break; | |
14745 | } | |
1042e4c0 SS |
14746 | |
14747 | /* Ask user only if there are some breakpoints to delete. */ | |
14748 | if (!from_tty | |
14749 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14750 | { | |
35df4500 | 14751 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14752 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14753 | delete_breakpoint (b); |
1042e4c0 SS |
14754 | } |
14755 | } | |
14756 | else | |
48649e1b | 14757 | map_breakpoint_numbers |
b926417a | 14758 | (arg, [&] (breakpoint *br) |
48649e1b | 14759 | { |
b926417a | 14760 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14761 | }); |
1042e4c0 SS |
14762 | } |
14763 | ||
197f0a60 TT |
14764 | /* Helper function for trace_pass_command. */ |
14765 | ||
14766 | static void | |
d9b3f62e | 14767 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14768 | { |
d9b3f62e | 14769 | tp->pass_count = count; |
76727919 | 14770 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14771 | if (from_tty) |
14772 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14773 | tp->number, count); |
197f0a60 TT |
14774 | } |
14775 | ||
1042e4c0 SS |
14776 | /* Set passcount for tracepoint. |
14777 | ||
14778 | First command argument is passcount, second is tracepoint number. | |
14779 | If tracepoint number omitted, apply to most recently defined. | |
14780 | Also accepts special argument "all". */ | |
14781 | ||
14782 | static void | |
0b39b52e | 14783 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14784 | { |
d9b3f62e | 14785 | struct tracepoint *t1; |
0b39b52e | 14786 | ULONGEST count; |
1042e4c0 SS |
14787 | |
14788 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14789 | error (_("passcount command requires an " |
14790 | "argument (count + optional TP num)")); | |
1042e4c0 | 14791 | |
0b39b52e | 14792 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14793 | |
529480d0 | 14794 | args = skip_spaces (args); |
1042e4c0 SS |
14795 | if (*args && strncasecmp (args, "all", 3) == 0) |
14796 | { | |
d9b3f62e PA |
14797 | struct breakpoint *b; |
14798 | ||
1042e4c0 | 14799 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14800 | if (*args) |
14801 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14802 | |
d9b3f62e | 14803 | ALL_TRACEPOINTS (b) |
197f0a60 | 14804 | { |
d9b3f62e | 14805 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14806 | trace_pass_set_count (t1, count, from_tty); |
14807 | } | |
14808 | } | |
14809 | else if (*args == '\0') | |
1042e4c0 | 14810 | { |
5fa1d40e | 14811 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14812 | if (t1) |
197f0a60 TT |
14813 | trace_pass_set_count (t1, count, from_tty); |
14814 | } | |
14815 | else | |
14816 | { | |
bfd28288 PA |
14817 | number_or_range_parser parser (args); |
14818 | while (!parser.finished ()) | |
1042e4c0 | 14819 | { |
bfd28288 | 14820 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14821 | if (t1) |
14822 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14823 | } |
14824 | } | |
1042e4c0 SS |
14825 | } |
14826 | ||
d9b3f62e | 14827 | struct tracepoint * |
1042e4c0 SS |
14828 | get_tracepoint (int num) |
14829 | { | |
14830 | struct breakpoint *t; | |
14831 | ||
14832 | ALL_TRACEPOINTS (t) | |
14833 | if (t->number == num) | |
d9b3f62e | 14834 | return (struct tracepoint *) t; |
1042e4c0 SS |
14835 | |
14836 | return NULL; | |
14837 | } | |
14838 | ||
d5551862 SS |
14839 | /* Find the tracepoint with the given target-side number (which may be |
14840 | different from the tracepoint number after disconnecting and | |
14841 | reconnecting). */ | |
14842 | ||
d9b3f62e | 14843 | struct tracepoint * |
d5551862 SS |
14844 | get_tracepoint_by_number_on_target (int num) |
14845 | { | |
d9b3f62e | 14846 | struct breakpoint *b; |
d5551862 | 14847 | |
d9b3f62e PA |
14848 | ALL_TRACEPOINTS (b) |
14849 | { | |
14850 | struct tracepoint *t = (struct tracepoint *) b; | |
14851 | ||
14852 | if (t->number_on_target == num) | |
14853 | return t; | |
14854 | } | |
d5551862 SS |
14855 | |
14856 | return NULL; | |
14857 | } | |
14858 | ||
1042e4c0 | 14859 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14860 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14861 | If the argument is missing, the most recent tracepoint |
14862 | (tracepoint_count) is returned. */ | |
14863 | ||
d9b3f62e | 14864 | struct tracepoint * |
0b39b52e | 14865 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14866 | number_or_range_parser *parser) |
1042e4c0 | 14867 | { |
1042e4c0 SS |
14868 | struct breakpoint *t; |
14869 | int tpnum; | |
0b39b52e | 14870 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14871 | |
bfd28288 | 14872 | if (parser != NULL) |
197f0a60 | 14873 | { |
bfd28288 PA |
14874 | gdb_assert (!parser->finished ()); |
14875 | tpnum = parser->get_number (); | |
197f0a60 TT |
14876 | } |
14877 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14878 | tpnum = tracepoint_count; |
1042e4c0 | 14879 | else |
197f0a60 | 14880 | tpnum = get_number (arg); |
1042e4c0 SS |
14881 | |
14882 | if (tpnum <= 0) | |
14883 | { | |
14884 | if (instring && *instring) | |
14885 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14886 | instring); | |
14887 | else | |
5fa1d40e | 14888 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14889 | return NULL; |
14890 | } | |
14891 | ||
14892 | ALL_TRACEPOINTS (t) | |
14893 | if (t->number == tpnum) | |
14894 | { | |
d9b3f62e | 14895 | return (struct tracepoint *) t; |
1042e4c0 SS |
14896 | } |
14897 | ||
1042e4c0 SS |
14898 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14899 | return NULL; | |
14900 | } | |
14901 | ||
d9b3f62e PA |
14902 | void |
14903 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14904 | { | |
14905 | if (b->thread != -1) | |
14906 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14907 | ||
14908 | if (b->task != 0) | |
14909 | fprintf_unfiltered (fp, " task %d", b->task); | |
14910 | ||
14911 | fprintf_unfiltered (fp, "\n"); | |
14912 | } | |
14913 | ||
6149aea9 PA |
14914 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14915 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14916 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14917 | true. */ |
6149aea9 | 14918 | |
1042e4c0 | 14919 | static void |
4495129a | 14920 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14921 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14922 | { |
14923 | struct breakpoint *tp; | |
6149aea9 | 14924 | int any = 0; |
6149aea9 | 14925 | int extra_trace_bits = 0; |
1042e4c0 | 14926 | |
6149aea9 PA |
14927 | if (filename == 0 || *filename == 0) |
14928 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14929 | |
14930 | /* See if we have anything to save. */ | |
6149aea9 | 14931 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14932 | { |
6149aea9 | 14933 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14934 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14935 | continue; |
14936 | ||
14937 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14938 | if (filter && !filter (tp)) | |
14939 | continue; | |
14940 | ||
14941 | any = 1; | |
14942 | ||
14943 | if (is_tracepoint (tp)) | |
14944 | { | |
14945 | extra_trace_bits = 1; | |
14946 | ||
14947 | /* We can stop searching. */ | |
14948 | break; | |
14949 | } | |
1042e4c0 | 14950 | } |
6149aea9 PA |
14951 | |
14952 | if (!any) | |
1042e4c0 | 14953 | { |
6149aea9 | 14954 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14955 | return; |
14956 | } | |
14957 | ||
ee0c3293 | 14958 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14959 | |
14960 | stdio_file fp; | |
14961 | ||
ee0c3293 | 14962 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14963 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14964 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14965 | |
6149aea9 | 14966 | if (extra_trace_bits) |
d7e74731 | 14967 | save_trace_state_variables (&fp); |
8bf6485c | 14968 | |
6149aea9 | 14969 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14970 | { |
6149aea9 | 14971 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14972 | if (!user_breakpoint_p (tp)) |
6149aea9 | 14973 | continue; |
8bf6485c | 14974 | |
6149aea9 PA |
14975 | /* If we have a filter, only save the breakpoints it accepts. */ |
14976 | if (filter && !filter (tp)) | |
14977 | continue; | |
14978 | ||
d7e74731 | 14979 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 14980 | |
6149aea9 PA |
14981 | /* Note, we can't rely on tp->number for anything, as we can't |
14982 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14983 | instead. */ | |
14984 | ||
14985 | if (tp->cond_string) | |
d7e74731 | 14986 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
14987 | |
14988 | if (tp->ignore_count) | |
d7e74731 | 14989 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 14990 | |
2d9442cc | 14991 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 14992 | { |
d7e74731 | 14993 | fp.puts (" commands\n"); |
a7bdde9e | 14994 | |
d7e74731 | 14995 | current_uiout->redirect (&fp); |
a70b8144 | 14996 | try |
1042e4c0 | 14997 | { |
d1b0a7bf | 14998 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 14999 | } |
230d2906 | 15000 | catch (const gdb_exception &ex) |
492d29ea | 15001 | { |
112e8700 | 15002 | current_uiout->redirect (NULL); |
eedc3f4f | 15003 | throw; |
492d29ea | 15004 | } |
1042e4c0 | 15005 | |
112e8700 | 15006 | current_uiout->redirect (NULL); |
d7e74731 | 15007 | fp.puts (" end\n"); |
1042e4c0 | 15008 | } |
6149aea9 PA |
15009 | |
15010 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15011 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15012 | |
15013 | /* If this is a multi-location breakpoint, check if the locations | |
15014 | should be individually disabled. Watchpoint locations are | |
15015 | special, and not user visible. */ | |
15016 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15017 | { | |
15018 | struct bp_location *loc; | |
15019 | int n = 1; | |
15020 | ||
15021 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15022 | if (!loc->enabled) | |
d7e74731 | 15023 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15024 | } |
1042e4c0 | 15025 | } |
8bf6485c | 15026 | |
6149aea9 | 15027 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15028 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15029 | |
1042e4c0 | 15030 | if (from_tty) |
ee0c3293 | 15031 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15032 | } |
15033 | ||
15034 | /* The `save breakpoints' command. */ | |
15035 | ||
15036 | static void | |
4495129a | 15037 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15038 | { |
15039 | save_breakpoints (args, from_tty, NULL); | |
15040 | } | |
15041 | ||
15042 | /* The `save tracepoints' command. */ | |
15043 | ||
15044 | static void | |
4495129a | 15045 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15046 | { |
15047 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15048 | } |
15049 | ||
15050 | /* Create a vector of all tracepoints. */ | |
15051 | ||
f51e0e20 | 15052 | std::vector<breakpoint *> |
eeae04df | 15053 | all_tracepoints (void) |
1042e4c0 | 15054 | { |
f51e0e20 | 15055 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15056 | struct breakpoint *tp; |
15057 | ||
15058 | ALL_TRACEPOINTS (tp) | |
15059 | { | |
f51e0e20 | 15060 | tp_vec.push_back (tp); |
1042e4c0 SS |
15061 | } |
15062 | ||
15063 | return tp_vec; | |
15064 | } | |
15065 | ||
c906108c | 15066 | \f |
629500fa KS |
15067 | /* This help string is used to consolidate all the help string for specifying |
15068 | locations used by several commands. */ | |
15069 | ||
15070 | #define LOCATION_HELP_STRING \ | |
15071 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15072 | source filename, function name, label name, and line number.\n\ | |
15073 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15074 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15075 | \"factorial.c:fact:the_top\".\n\ | |
15076 | \n\ | |
15077 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15078 | program. Example: To specify the fourth byte past the start function\n\ | |
15079 | \"main\", use \"*main + 4\".\n\ | |
15080 | \n\ | |
15081 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15082 | syntax to specify location parameters.\n\ | |
15083 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15084 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15085 | -function fact -label the_top\".\n\ |
15086 | \n\ | |
15087 | By default, a specified function is matched against the program's\n\ | |
15088 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15089 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15090 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15091 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15092 | specified name as a complete fully-qualified name instead." |
629500fa | 15093 | |
4a64f543 MS |
15094 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15095 | commands. It is defined as a macro to prevent duplication. | |
15096 | COMMAND should be a string constant containing the name of the | |
15097 | command. */ | |
629500fa | 15098 | |
31e2b00f | 15099 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15100 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15101 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15102 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15103 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15104 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15105 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15106 | below.\n\ | |
15107 | \n\ | |
dc10affe PA |
15108 | With no LOCATION, uses current execution address of the selected\n\ |
15109 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15110 | \n\ |
15111 | THREADNUM is the number from \"info threads\".\n\ | |
15112 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15113 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15114 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15115 | conditions are different.\n\ | |
31e2b00f AS |
15116 | \n\ |
15117 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15118 | ||
44feb3ce TT |
15119 | /* List of subcommands for "catch". */ |
15120 | static struct cmd_list_element *catch_cmdlist; | |
15121 | ||
15122 | /* List of subcommands for "tcatch". */ | |
15123 | static struct cmd_list_element *tcatch_cmdlist; | |
15124 | ||
9ac4176b | 15125 | void |
a121b7c1 | 15126 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15127 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15128 | completer_ftype *completer, |
44feb3ce TT |
15129 | void *user_data_catch, |
15130 | void *user_data_tcatch) | |
15131 | { | |
15132 | struct cmd_list_element *command; | |
15133 | ||
0450cc4c | 15134 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15135 | &catch_cmdlist); |
15136 | set_cmd_sfunc (command, sfunc); | |
15137 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15138 | set_cmd_completer (command, completer); |
44feb3ce | 15139 | |
0450cc4c | 15140 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15141 | &tcatch_cmdlist); |
15142 | set_cmd_sfunc (command, sfunc); | |
15143 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15144 | set_cmd_completer (command, completer); |
44feb3ce TT |
15145 | } |
15146 | ||
6149aea9 | 15147 | static void |
981a3fb3 | 15148 | save_command (const char *arg, int from_tty) |
6149aea9 | 15149 | { |
3e43a32a MS |
15150 | printf_unfiltered (_("\"save\" must be followed by " |
15151 | "the name of a save subcommand.\n")); | |
635c7e8a | 15152 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15153 | } |
15154 | ||
84f4c1fe | 15155 | struct breakpoint * |
95da600f | 15156 | iterate_over_breakpoints (gdb::function_view<bool (breakpoint *)> callback) |
84f4c1fe | 15157 | { |
35df4500 | 15158 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15159 | |
35df4500 | 15160 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe | 15161 | { |
95da600f | 15162 | if (callback (b)) |
84f4c1fe PM |
15163 | return b; |
15164 | } | |
15165 | ||
15166 | return NULL; | |
15167 | } | |
15168 | ||
0574c78f GB |
15169 | /* Zero if any of the breakpoint's locations could be a location where |
15170 | functions have been inlined, nonzero otherwise. */ | |
15171 | ||
15172 | static int | |
15173 | is_non_inline_function (struct breakpoint *b) | |
15174 | { | |
15175 | /* The shared library event breakpoint is set on the address of a | |
15176 | non-inline function. */ | |
15177 | if (b->type == bp_shlib_event) | |
15178 | return 1; | |
15179 | ||
15180 | return 0; | |
15181 | } | |
15182 | ||
15183 | /* Nonzero if the specified PC cannot be a location where functions | |
15184 | have been inlined. */ | |
15185 | ||
15186 | int | |
accd0bcd | 15187 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15188 | const struct target_waitstatus *ws) |
0574c78f GB |
15189 | { |
15190 | struct breakpoint *b; | |
15191 | struct bp_location *bl; | |
15192 | ||
15193 | ALL_BREAKPOINTS (b) | |
15194 | { | |
15195 | if (!is_non_inline_function (b)) | |
15196 | continue; | |
15197 | ||
15198 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15199 | { | |
15200 | if (!bl->shlib_disabled | |
09ac7c10 | 15201 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15202 | return 1; |
15203 | } | |
15204 | } | |
15205 | ||
15206 | return 0; | |
15207 | } | |
15208 | ||
2f202fde JK |
15209 | /* Remove any references to OBJFILE which is going to be freed. */ |
15210 | ||
15211 | void | |
15212 | breakpoint_free_objfile (struct objfile *objfile) | |
15213 | { | |
15214 | struct bp_location **locp, *loc; | |
15215 | ||
15216 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15217 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15218 | loc->symtab = NULL; |
15219 | } | |
15220 | ||
2060206e PA |
15221 | void |
15222 | initialize_breakpoint_ops (void) | |
15223 | { | |
15224 | static int initialized = 0; | |
15225 | ||
15226 | struct breakpoint_ops *ops; | |
15227 | ||
15228 | if (initialized) | |
15229 | return; | |
15230 | initialized = 1; | |
15231 | ||
15232 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15233 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15234 | internal and momentary breakpoints, etc.). */ | |
15235 | ops = &bkpt_base_breakpoint_ops; | |
15236 | *ops = base_breakpoint_ops; | |
15237 | ops->re_set = bkpt_re_set; | |
15238 | ops->insert_location = bkpt_insert_location; | |
15239 | ops->remove_location = bkpt_remove_location; | |
15240 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15241 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15242 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15243 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15244 | |
15245 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15246 | ops = &bkpt_breakpoint_ops; | |
15247 | *ops = bkpt_base_breakpoint_ops; | |
15248 | ops->re_set = bkpt_re_set; | |
15249 | ops->resources_needed = bkpt_resources_needed; | |
15250 | ops->print_it = bkpt_print_it; | |
15251 | ops->print_mention = bkpt_print_mention; | |
15252 | ops->print_recreate = bkpt_print_recreate; | |
15253 | ||
15254 | /* Ranged breakpoints. */ | |
15255 | ops = &ranged_breakpoint_ops; | |
15256 | *ops = bkpt_breakpoint_ops; | |
15257 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15258 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15259 | ops->print_it = print_it_ranged_breakpoint; | |
15260 | ops->print_one = print_one_ranged_breakpoint; | |
15261 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15262 | ops->print_mention = print_mention_ranged_breakpoint; | |
15263 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15264 | ||
15265 | /* Internal breakpoints. */ | |
15266 | ops = &internal_breakpoint_ops; | |
15267 | *ops = bkpt_base_breakpoint_ops; | |
15268 | ops->re_set = internal_bkpt_re_set; | |
15269 | ops->check_status = internal_bkpt_check_status; | |
15270 | ops->print_it = internal_bkpt_print_it; | |
15271 | ops->print_mention = internal_bkpt_print_mention; | |
15272 | ||
15273 | /* Momentary breakpoints. */ | |
15274 | ops = &momentary_breakpoint_ops; | |
15275 | *ops = bkpt_base_breakpoint_ops; | |
15276 | ops->re_set = momentary_bkpt_re_set; | |
15277 | ops->check_status = momentary_bkpt_check_status; | |
15278 | ops->print_it = momentary_bkpt_print_it; | |
15279 | ops->print_mention = momentary_bkpt_print_mention; | |
15280 | ||
55aa24fb SDJ |
15281 | /* Probe breakpoints. */ |
15282 | ops = &bkpt_probe_breakpoint_ops; | |
15283 | *ops = bkpt_breakpoint_ops; | |
15284 | ops->insert_location = bkpt_probe_insert_location; | |
15285 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15286 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15287 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15288 | |
2060206e PA |
15289 | /* Watchpoints. */ |
15290 | ops = &watchpoint_breakpoint_ops; | |
15291 | *ops = base_breakpoint_ops; | |
15292 | ops->re_set = re_set_watchpoint; | |
15293 | ops->insert_location = insert_watchpoint; | |
15294 | ops->remove_location = remove_watchpoint; | |
15295 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15296 | ops->check_status = check_status_watchpoint; | |
15297 | ops->resources_needed = resources_needed_watchpoint; | |
15298 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15299 | ops->print_it = print_it_watchpoint; | |
15300 | ops->print_mention = print_mention_watchpoint; | |
15301 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15302 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15303 | |
15304 | /* Masked watchpoints. */ | |
15305 | ops = &masked_watchpoint_breakpoint_ops; | |
15306 | *ops = watchpoint_breakpoint_ops; | |
15307 | ops->insert_location = insert_masked_watchpoint; | |
15308 | ops->remove_location = remove_masked_watchpoint; | |
15309 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15310 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15311 | ops->print_it = print_it_masked_watchpoint; | |
15312 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15313 | ops->print_mention = print_mention_masked_watchpoint; | |
15314 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15315 | ||
15316 | /* Tracepoints. */ | |
15317 | ops = &tracepoint_breakpoint_ops; | |
15318 | *ops = base_breakpoint_ops; | |
15319 | ops->re_set = tracepoint_re_set; | |
15320 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15321 | ops->print_one_detail = tracepoint_print_one_detail; | |
15322 | ops->print_mention = tracepoint_print_mention; | |
15323 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15324 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15325 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15326 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15327 | |
55aa24fb SDJ |
15328 | /* Probe tracepoints. */ |
15329 | ops = &tracepoint_probe_breakpoint_ops; | |
15330 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15331 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15332 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15333 | |
983af33b SDJ |
15334 | /* Static tracepoints with marker (`-m'). */ |
15335 | ops = &strace_marker_breakpoint_ops; | |
15336 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15337 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15338 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15339 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15340 | |
15341 | /* Fork catchpoints. */ | |
15342 | ops = &catch_fork_breakpoint_ops; | |
15343 | *ops = base_breakpoint_ops; | |
15344 | ops->insert_location = insert_catch_fork; | |
15345 | ops->remove_location = remove_catch_fork; | |
15346 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15347 | ops->print_it = print_it_catch_fork; | |
15348 | ops->print_one = print_one_catch_fork; | |
15349 | ops->print_mention = print_mention_catch_fork; | |
15350 | ops->print_recreate = print_recreate_catch_fork; | |
15351 | ||
15352 | /* Vfork catchpoints. */ | |
15353 | ops = &catch_vfork_breakpoint_ops; | |
15354 | *ops = base_breakpoint_ops; | |
15355 | ops->insert_location = insert_catch_vfork; | |
15356 | ops->remove_location = remove_catch_vfork; | |
15357 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15358 | ops->print_it = print_it_catch_vfork; | |
15359 | ops->print_one = print_one_catch_vfork; | |
15360 | ops->print_mention = print_mention_catch_vfork; | |
15361 | ops->print_recreate = print_recreate_catch_vfork; | |
15362 | ||
15363 | /* Exec catchpoints. */ | |
15364 | ops = &catch_exec_breakpoint_ops; | |
15365 | *ops = base_breakpoint_ops; | |
2060206e PA |
15366 | ops->insert_location = insert_catch_exec; |
15367 | ops->remove_location = remove_catch_exec; | |
15368 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15369 | ops->print_it = print_it_catch_exec; | |
15370 | ops->print_one = print_one_catch_exec; | |
15371 | ops->print_mention = print_mention_catch_exec; | |
15372 | ops->print_recreate = print_recreate_catch_exec; | |
15373 | ||
edcc5120 TT |
15374 | /* Solib-related catchpoints. */ |
15375 | ops = &catch_solib_breakpoint_ops; | |
15376 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15377 | ops->insert_location = insert_catch_solib; |
15378 | ops->remove_location = remove_catch_solib; | |
15379 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15380 | ops->check_status = check_status_catch_solib; | |
15381 | ops->print_it = print_it_catch_solib; | |
15382 | ops->print_one = print_one_catch_solib; | |
15383 | ops->print_mention = print_mention_catch_solib; | |
15384 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15385 | |
15386 | ops = &dprintf_breakpoint_ops; | |
15387 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15388 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15389 | ops->resources_needed = bkpt_resources_needed; |
15390 | ops->print_it = bkpt_print_it; | |
15391 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15392 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15393 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15394 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15395 | } |
15396 | ||
8bfd80db YQ |
15397 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15398 | ||
15399 | static struct cmd_list_element *enablebreaklist = NULL; | |
15400 | ||
8588b356 SM |
15401 | /* See breakpoint.h. */ |
15402 | ||
15403 | cmd_list_element *commands_cmd_element = nullptr; | |
15404 | ||
c906108c | 15405 | void |
fba45db2 | 15406 | _initialize_breakpoint (void) |
c906108c SS |
15407 | { |
15408 | struct cmd_list_element *c; | |
15409 | ||
2060206e PA |
15410 | initialize_breakpoint_ops (); |
15411 | ||
76727919 TT |
15412 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15413 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15414 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15415 | |
c906108c SS |
15416 | breakpoint_chain = 0; |
15417 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15418 | before a breakpoint is set. */ | |
15419 | breakpoint_count = 0; | |
15420 | ||
1042e4c0 SS |
15421 | tracepoint_count = 0; |
15422 | ||
1bedd215 AC |
15423 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15424 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15425 | Usage is `ignore N COUNT'.")); | |
c906108c | 15426 | |
8588b356 SM |
15427 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15428 | commands_command, _("\ | |
18da0c51 MG |
15429 | Set commands to be executed when the given breakpoints are hit.\n\ |
15430 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15431 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15432 | (e.g. `5-7').\n\ | |
c906108c SS |
15433 | With no argument, the targeted breakpoint is the last one set.\n\ |
15434 | The commands themselves follow starting on the next line.\n\ | |
15435 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15436 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15437 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15438 | |
d55637df | 15439 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15440 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15441 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15442 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15443 | set_cmd_completer (c, condition_completer); |
c906108c | 15444 | |
1bedd215 | 15445 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15446 | Set a temporary breakpoint.\n\ |
c906108c SS |
15447 | Like \"break\" except the breakpoint is only temporary,\n\ |
15448 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15449 | by using \"enable delete\" on the breakpoint number.\n\ |
15450 | \n" | |
15451 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15452 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15453 | |
1bedd215 | 15454 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15455 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15456 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15457 | some target hardware may not have this support.\n\ |
15458 | \n" | |
15459 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15460 | set_cmd_completer (c, location_completer); |
c906108c | 15461 | |
1bedd215 | 15462 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15463 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15464 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15465 | so it will be deleted when hit.\n\ |
15466 | \n" | |
15467 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15468 | set_cmd_completer (c, location_completer); |
c906108c | 15469 | |
1bedd215 | 15470 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
590042fc PW |
15471 | Enable all or some breakpoints.\n\ |
15472 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15473 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15474 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15475 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15476 | With a subcommand you can enable temporarily."), |
c906108c | 15477 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15478 | |
15479 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15480 | ||
84951ab5 | 15481 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15482 | Enable all or some breakpoints.\n\ |
15483 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15484 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15485 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15486 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15487 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15488 | |
1a966eab | 15489 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15490 | Enable some breakpoints for one hit.\n\ |
15491 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15492 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15493 | &enablebreaklist); |
15494 | ||
1a966eab | 15495 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15496 | Enable some breakpoints and delete when hit.\n\ |
15497 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15498 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15499 | &enablebreaklist); |
15500 | ||
816338b5 | 15501 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15502 | Enable some breakpoints for COUNT hits.\n\ |
15503 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15504 | If a breakpoint is hit while enabled in this fashion,\n\ |
15505 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15506 | &enablebreaklist); | |
15507 | ||
1a966eab | 15508 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15509 | Enable some breakpoints and delete when hit.\n\ |
15510 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15511 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15512 | &enablelist); |
15513 | ||
1a966eab | 15514 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15515 | Enable some breakpoints for one hit.\n\ |
15516 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15517 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15518 | &enablelist); |
15519 | ||
15520 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15521 | Enable some breakpoints for COUNT hits.\n\ |
15522 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15523 | If a breakpoint is hit while enabled in this fashion,\n\ |
15524 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15525 | &enablelist); |
15526 | ||
1bedd215 | 15527 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
590042fc PW |
15528 | Disable all or some breakpoints.\n\ |
15529 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15530 | Arguments are breakpoint numbers with spaces in between.\n\ |
15531 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15532 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15533 | &disablelist, "disable ", 1, &cmdlist); |
15534 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15535 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15536 | |
1a966eab | 15537 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
590042fc PW |
15538 | Disable all or some breakpoints.\n\ |
15539 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15540 | Arguments are breakpoint numbers with spaces in between.\n\ |
15541 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15542 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15543 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15544 | &disablelist); |
15545 | ||
1bedd215 | 15546 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
590042fc PW |
15547 | Delete all or some breakpoints.\n\ |
15548 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15549 | Arguments are breakpoint numbers with spaces in between.\n\ |
15550 | To delete all breakpoints, give no argument.\n\ | |
15551 | \n\ | |
590042fc | 15552 | Also a prefix command for deletion of other GDB objects."), |
c906108c SS |
15553 | &deletelist, "delete ", 1, &cmdlist); |
15554 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15555 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15556 | |
1a966eab | 15557 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
590042fc PW |
15558 | Delete all or some breakpoints or auto-display expressions.\n\ |
15559 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15560 | Arguments are breakpoint numbers with spaces in between.\n\ |
15561 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15562 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15563 | &deletelist); |
15564 | ||
1bedd215 | 15565 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15566 | Clear breakpoint at specified location.\n\ |
15567 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15568 | \n\ |
15569 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15570 | is executing in.\n" |
89549d7f | 15571 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15572 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15573 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15574 | |
1bedd215 | 15575 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15576 | Set breakpoint at specified location.\n" |
31e2b00f | 15577 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15578 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15579 | |
c906108c SS |
15580 | add_com_alias ("b", "break", class_run, 1); |
15581 | add_com_alias ("br", "break", class_run, 1); | |
15582 | add_com_alias ("bre", "break", class_run, 1); | |
15583 | add_com_alias ("brea", "break", class_run, 1); | |
15584 | ||
c906108c SS |
15585 | if (dbx_commands) |
15586 | { | |
1bedd215 AC |
15587 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15588 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15589 | &stoplist, "stop ", 1, &cmdlist); |
15590 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15591 | _("Break in function or address."), &stoplist); |
c5aa993b | 15592 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15593 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15594 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15595 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15596 | The \"Type\" column indicates one of:\n\ |
15597 | \tbreakpoint - normal breakpoint\n\ | |
15598 | \twatchpoint - watchpoint\n\ | |
15599 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15600 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15601 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15602 | address and file/line number respectively.\n\ |
15603 | \n\ | |
15604 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15605 | are set to the address of the last breakpoint listed unless the command\n\ |
15606 | is prefixed with \"server \".\n\n\ | |
c906108c | 15607 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15608 | breakpoint set.")); |
c906108c SS |
15609 | } |
15610 | ||
11db9430 | 15611 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15612 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15613 | The \"Type\" column indicates one of:\n\ |
15614 | \tbreakpoint - normal breakpoint\n\ | |
15615 | \twatchpoint - watchpoint\n\ | |
15616 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15617 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15618 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15619 | address and file/line number respectively.\n\ |
15620 | \n\ | |
15621 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15622 | are set to the address of the last breakpoint listed unless the command\n\ |
15623 | is prefixed with \"server \".\n\n\ | |
c906108c | 15624 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15625 | breakpoint set.")); |
c906108c | 15626 | |
6b04bdb7 MS |
15627 | add_info_alias ("b", "breakpoints", 1); |
15628 | ||
1a966eab AC |
15629 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15630 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15631 | The \"Type\" column indicates one of:\n\ |
15632 | \tbreakpoint - normal breakpoint\n\ | |
15633 | \twatchpoint - watchpoint\n\ | |
15634 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15635 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15636 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15637 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15638 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15639 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15640 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15641 | address and file/line number respectively.\n\ |
15642 | \n\ | |
15643 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15644 | are set to the address of the last breakpoint listed unless the command\n\ |
15645 | is prefixed with \"server \".\n\n\ | |
c906108c | 15646 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15647 | breakpoint set."), |
c906108c SS |
15648 | &maintenanceinfolist); |
15649 | ||
44feb3ce TT |
15650 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15651 | Set catchpoints to catch events."), | |
15652 | &catch_cmdlist, "catch ", | |
15653 | 0/*allow-unknown*/, &cmdlist); | |
15654 | ||
15655 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15656 | Set temporary catchpoints to catch events."), | |
15657 | &tcatch_cmdlist, "tcatch ", | |
15658 | 0/*allow-unknown*/, &cmdlist); | |
15659 | ||
44feb3ce TT |
15660 | add_catch_command ("fork", _("Catch calls to fork."), |
15661 | catch_fork_command_1, | |
a96d9b2e | 15662 | NULL, |
44feb3ce TT |
15663 | (void *) (uintptr_t) catch_fork_permanent, |
15664 | (void *) (uintptr_t) catch_fork_temporary); | |
15665 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15666 | catch_fork_command_1, | |
a96d9b2e | 15667 | NULL, |
44feb3ce TT |
15668 | (void *) (uintptr_t) catch_vfork_permanent, |
15669 | (void *) (uintptr_t) catch_vfork_temporary); | |
15670 | add_catch_command ("exec", _("Catch calls to exec."), | |
15671 | catch_exec_command_1, | |
a96d9b2e SDJ |
15672 | NULL, |
15673 | CATCH_PERMANENT, | |
15674 | CATCH_TEMPORARY); | |
edcc5120 TT |
15675 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15676 | Usage: catch load [REGEX]\n\ | |
15677 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15678 | catch_load_command_1, | |
15679 | NULL, | |
15680 | CATCH_PERMANENT, | |
15681 | CATCH_TEMPORARY); | |
15682 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15683 | Usage: catch unload [REGEX]\n\ | |
15684 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15685 | catch_unload_command_1, | |
15686 | NULL, | |
15687 | CATCH_PERMANENT, | |
15688 | CATCH_TEMPORARY); | |
c5aa993b | 15689 | |
1bedd215 AC |
15690 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15691 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15692 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15693 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15694 | an expression changes.\n\ |
15695 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15696 | the memory to which it refers.")); | |
65d12d83 | 15697 | set_cmd_completer (c, expression_completer); |
c906108c | 15698 | |
1bedd215 AC |
15699 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15700 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15701 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15702 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15703 | an expression is read.\n\ |
15704 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15705 | the memory to which it refers.")); | |
65d12d83 | 15706 | set_cmd_completer (c, expression_completer); |
c906108c | 15707 | |
1bedd215 AC |
15708 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15709 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15710 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15711 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15712 | an expression is either read or written.\n\ |
15713 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15714 | the memory to which it refers.")); | |
65d12d83 | 15715 | set_cmd_completer (c, expression_completer); |
c906108c | 15716 | |
11db9430 | 15717 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15718 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15719 | |
920d2a44 AC |
15720 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15721 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15722 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15723 | &can_use_hw_watchpoints, _("\ | |
15724 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15725 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15726 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15727 | such is available. (However, any hardware watchpoints that were\n\ | |
15728 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15729 | hardware.)"), |
15730 | NULL, | |
920d2a44 | 15731 | show_can_use_hw_watchpoints, |
85c07804 | 15732 | &setlist, &showlist); |
c906108c SS |
15733 | |
15734 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15735 | |
1042e4c0 SS |
15736 | /* Tracepoint manipulation commands. */ |
15737 | ||
15738 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15739 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15740 | \n" |
15741 | BREAK_ARGS_HELP ("trace") "\n\ | |
15742 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15743 | set_cmd_completer (c, location_completer); | |
15744 | ||
15745 | add_com_alias ("tp", "trace", class_alias, 0); | |
15746 | add_com_alias ("tr", "trace", class_alias, 1); | |
15747 | add_com_alias ("tra", "trace", class_alias, 1); | |
15748 | add_com_alias ("trac", "trace", class_alias, 1); | |
15749 | ||
7a697b8d | 15750 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15751 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15752 | \n" |
15753 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15754 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15755 | set_cmd_completer (c, location_completer); | |
15756 | ||
0fb4aa4b | 15757 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15758 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15759 | \n\ |
15760 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15761 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15762 | or -m MARKER_ID.\n\n\ | |
15763 | If a marker id is specified, probe the marker with that name. With\n\ | |
15764 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15765 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15766 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15767 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15768 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15769 | \n\ | |
15770 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15771 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15772 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15773 | conditions are different.\n\ | |
0fb4aa4b PA |
15774 | \n\ |
15775 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15776 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15777 | set_cmd_completer (c, location_completer); | |
15778 | ||
11db9430 | 15779 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15780 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15781 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15782 | last tracepoint set.")); | |
15783 | ||
15784 | add_info_alias ("tp", "tracepoints", 1); | |
15785 | ||
15786 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15787 | Delete specified tracepoints.\n\ | |
15788 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15789 | No argument means delete all tracepoints."), | |
15790 | &deletelist); | |
7e20dfcd | 15791 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15792 | |
15793 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15794 | Disable specified tracepoints.\n\ | |
15795 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15796 | No argument means disable all tracepoints."), | |
15797 | &disablelist); | |
15798 | deprecate_cmd (c, "disable"); | |
15799 | ||
15800 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15801 | Enable specified tracepoints.\n\ | |
15802 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15803 | No argument means enable all tracepoints."), | |
15804 | &enablelist); | |
15805 | deprecate_cmd (c, "enable"); | |
15806 | ||
15807 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15808 | Set the passcount for a tracepoint.\n\ | |
15809 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15810 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15811 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15812 | ||
6149aea9 PA |
15813 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15814 | _("Save breakpoint definitions as a script."), | |
15815 | &save_cmdlist, "save ", | |
15816 | 0/*allow-unknown*/, &cmdlist); | |
15817 | ||
15818 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15819 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15820 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15821 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15822 | session to restore them."), | |
15823 | &save_cmdlist); | |
15824 | set_cmd_completer (c, filename_completer); | |
15825 | ||
15826 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15827 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15828 | Use the 'source' command in another debug session to restore them."), |
15829 | &save_cmdlist); | |
1042e4c0 SS |
15830 | set_cmd_completer (c, filename_completer); |
15831 | ||
6149aea9 PA |
15832 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15833 | deprecate_cmd (c, "save tracepoints"); | |
15834 | ||
1bedd215 | 15835 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
590042fc | 15836 | Breakpoint specific settings.\n\ |
fa8d40ab | 15837 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15838 | pending breakpoint behavior."), |
fa8d40ab JJ |
15839 | &breakpoint_set_cmdlist, "set breakpoint ", |
15840 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15841 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
590042fc | 15842 | Breakpoint specific settings.\n\ |
fa8d40ab | 15843 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15844 | pending breakpoint behavior."), |
fa8d40ab JJ |
15845 | &breakpoint_show_cmdlist, "show breakpoint ", |
15846 | 0/*allow-unknown*/, &showlist); | |
15847 | ||
7915a72c AC |
15848 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15849 | &pending_break_support, _("\ | |
15850 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15851 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15852 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15853 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15854 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15855 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15856 | NULL, |
920d2a44 | 15857 | show_pending_break_support, |
6e1d7d6c AC |
15858 | &breakpoint_set_cmdlist, |
15859 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15860 | |
15861 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15862 | |
15863 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15864 | &automatic_hardware_breakpoints, _("\ | |
15865 | Set automatic usage of hardware breakpoints."), _("\ | |
15866 | Show automatic usage of hardware breakpoints."), _("\ | |
15867 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15868 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15869 | a warning will be emitted for such breakpoints."), | |
15870 | NULL, | |
15871 | show_automatic_hardware_breakpoints, | |
15872 | &breakpoint_set_cmdlist, | |
15873 | &breakpoint_show_cmdlist); | |
74960c60 | 15874 | |
a25a5a45 PA |
15875 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15876 | &always_inserted_mode, _("\ | |
74960c60 VP |
15877 | Set mode for inserting breakpoints."), _("\ |
15878 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15879 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15880 | they're created, kept inserted even when execution stops, and removed\n\ | |
15881 | only when the user deletes them. When this mode is off (the default),\n\ | |
15882 | breakpoints are inserted only when execution continues, and removed\n\ | |
15883 | when execution stops."), | |
72d0e2c5 YQ |
15884 | NULL, |
15885 | &show_always_inserted_mode, | |
15886 | &breakpoint_set_cmdlist, | |
15887 | &breakpoint_show_cmdlist); | |
f1310107 | 15888 | |
b775012e LM |
15889 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15890 | condition_evaluation_enums, | |
15891 | &condition_evaluation_mode_1, _("\ | |
15892 | Set mode of breakpoint condition evaluation."), _("\ | |
15893 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15894 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15895 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15896 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15897 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15898 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15899 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15900 | be set to \"gdb\""), | |
15901 | &set_condition_evaluation_mode, | |
15902 | &show_condition_evaluation_mode, | |
15903 | &breakpoint_set_cmdlist, | |
15904 | &breakpoint_show_cmdlist); | |
15905 | ||
f1310107 TJB |
15906 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15907 | Set a breakpoint for an address range.\n\ | |
15908 | break-range START-LOCATION, END-LOCATION\n\ | |
15909 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15910 | LINENUM, for that line in the current file,\n\ | |
15911 | FILE:LINENUM, for that line in that file,\n\ | |
15912 | +OFFSET, for that number of lines after the current line\n\ | |
15913 | or the start of the range\n\ | |
15914 | FUNCTION, for the first line in that function,\n\ | |
15915 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15916 | *ADDRESS, for the instruction at that address.\n\ | |
15917 | \n\ | |
15918 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15919 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15920 | range (including START-LOCATION and END-LOCATION).")); | |
15921 | ||
e7e0cddf | 15922 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15923 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15924 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15925 | location may be a linespec, explicit, or address location.\n" |
15926 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15927 | set_cmd_completer (c, location_completer); |
15928 | ||
15929 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15930 | dprintf_style_enums, &dprintf_style, _("\ | |
15931 | Set the style of usage for dynamic printf."), _("\ | |
15932 | Show the style of usage for dynamic printf."), _("\ | |
15933 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15934 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15935 | console, as with the \"printf\" command.\n\ | |
15936 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15937 | program; by default printf(), but you can choose a different function or\n\ | |
15938 | output stream by setting dprintf-function and dprintf-channel."), | |
15939 | update_dprintf_commands, NULL, | |
15940 | &setlist, &showlist); | |
15941 | ||
15942 | dprintf_function = xstrdup ("printf"); | |
15943 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15944 | &dprintf_function, _("\ | |
590042fc PW |
15945 | Set the function to use for dynamic printf."), _("\ |
15946 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15947 | update_dprintf_commands, NULL, |
15948 | &setlist, &showlist); | |
15949 | ||
15950 | dprintf_channel = xstrdup (""); | |
15951 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15952 | &dprintf_channel, _("\ | |
590042fc PW |
15953 | Set the channel to use for dynamic printf."), _("\ |
15954 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15955 | update_dprintf_commands, NULL, |
15956 | &setlist, &showlist); | |
15957 | ||
d3ce09f5 SS |
15958 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15959 | &disconnected_dprintf, _("\ | |
15960 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15961 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15962 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15963 | even if GDB disconnects or detaches from the target."), | |
15964 | NULL, | |
15965 | NULL, | |
15966 | &setlist, &showlist); | |
15967 | ||
15968 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
15969 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
15970 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
15971 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
15972 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 15973 | |
491144b5 | 15974 | automatic_hardware_breakpoints = true; |
f3b1572e | 15975 | |
76727919 TT |
15976 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15977 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15978 | } |