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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
4a94e368 | 3 | Copyright (C) 1986-2022 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
d322d6d6 | 59 | #include "gdbsupport/gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
0f8e2034 | 70 | #include "cli/cli-decode.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 | 92 | static void |
626d2320 | 93 | create_sals_from_location_default (struct event_location *location, |
03ada39e | 94 | struct linespec_result *canonical); |
983af33b | 95 | |
eee031e2 TT |
96 | static void create_breakpoints_sal (struct gdbarch *, |
97 | struct linespec_result *, | |
98 | gdb::unique_xmalloc_ptr<char>, | |
99 | gdb::unique_xmalloc_ptr<char>, | |
100 | enum bptype, | |
101 | enum bpdisp, int, int, | |
102 | int, | |
103 | const struct breakpoint_ops *, | |
104 | int, int, int, unsigned); | |
983af33b | 105 | |
6c5b2ebe | 106 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 107 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 108 | struct program_space *search_pspace); |
983af33b | 109 | |
a6535de1 TT |
110 | static int can_use_hardware_watchpoint |
111 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 112 | |
b713485d | 113 | static void mention (const breakpoint *); |
c906108c | 114 | |
348d480f | 115 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
9efa3c7f | 116 | enum bptype); |
4a64f543 MS |
117 | /* This function is used in gdbtk sources and thus can not be made |
118 | static. */ | |
cd0f67f3 SM |
119 | static struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
120 | struct symtab_and_line, | |
9efa3c7f | 121 | enum bptype); |
c906108c | 122 | |
06edf0c0 PA |
123 | static struct breakpoint * |
124 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
125 | enum bptype type, | |
a1aa2221 | 126 | int loc_enabled); |
06edf0c0 | 127 | |
76897487 KB |
128 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
129 | ||
a6d9a66e UW |
130 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
131 | CORE_ADDR bpaddr, | |
dda83cd7 | 132 | enum bptype bptype); |
76897487 | 133 | |
6c95b8df PA |
134 | static void describe_other_breakpoints (struct gdbarch *, |
135 | struct program_space *, CORE_ADDR, | |
5af949e3 | 136 | struct obj_section *, int); |
c906108c | 137 | |
85d721b8 PA |
138 | static int watchpoint_locations_match (struct bp_location *loc1, |
139 | struct bp_location *loc2); | |
140 | ||
7f32a4d5 PA |
141 | static int breakpoint_locations_match (struct bp_location *loc1, |
142 | struct bp_location *loc2, | |
143 | bool sw_hw_bps_match = false); | |
144 | ||
f1310107 | 145 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 146 | const struct address_space *aspace, |
f1310107 TJB |
147 | CORE_ADDR addr); |
148 | ||
d35ae833 | 149 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 150 | const address_space *, |
d35ae833 PA |
151 | CORE_ADDR, int); |
152 | ||
834c0d03 | 153 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 154 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 155 | |
313f3b21 | 156 | static enum print_stop_action print_bp_stop_message (bpstat *bs); |
c906108c | 157 | |
a14ed312 | 158 | static int hw_breakpoint_used_count (void); |
c906108c | 159 | |
a1398e0c PA |
160 | static int hw_watchpoint_use_count (struct breakpoint *); |
161 | ||
162 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
163 | enum bptype type, | |
164 | int *other_type_used); | |
c906108c | 165 | |
816338b5 SS |
166 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
167 | int count); | |
c906108c | 168 | |
f431efe5 | 169 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 170 | |
5d926615 TT |
171 | static std::vector<symtab_and_line> bkpt_probe_decode_location |
172 | (struct breakpoint *b, | |
173 | struct event_location *location, | |
174 | struct program_space *search_pspace); | |
175 | ||
44702360 PA |
176 | /* update_global_location_list's modes of operation wrt to whether to |
177 | insert locations now. */ | |
178 | enum ugll_insert_mode | |
179 | { | |
180 | /* Don't insert any breakpoint locations into the inferior, only | |
181 | remove already-inserted locations that no longer should be | |
182 | inserted. Functions that delete a breakpoint or breakpoints | |
183 | should specify this mode, so that deleting a breakpoint doesn't | |
184 | have the side effect of inserting the locations of other | |
185 | breakpoints that are marked not-inserted, but should_be_inserted | |
186 | returns true on them. | |
187 | ||
188 | This behavior is useful is situations close to tear-down -- e.g., | |
189 | after an exec, while the target still has execution, but | |
190 | breakpoint shadows of the previous executable image should *NOT* | |
191 | be restored to the new image; or before detaching, where the | |
192 | target still has execution and wants to delete breakpoints from | |
193 | GDB's lists, and all breakpoints had already been removed from | |
194 | the inferior. */ | |
195 | UGLL_DONT_INSERT, | |
196 | ||
a25a5a45 PA |
197 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
198 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
199 | UGLL_MAY_INSERT, |
200 | ||
a25a5a45 PA |
201 | /* Insert locations now, irrespective of |
202 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
203 | stopped right now, and the user did "continue". We need to | |
204 | insert breakpoints _before_ resuming the target, but | |
205 | UGLL_MAY_INSERT wouldn't insert them, because | |
206 | breakpoints_should_be_inserted_now returns false at that point, | |
207 | as no thread is running yet. */ | |
04086b45 | 208 | UGLL_INSERT |
44702360 PA |
209 | }; |
210 | ||
211 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 212 | |
44702360 | 213 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 214 | |
74960c60 | 215 | static void insert_breakpoint_locations (void); |
a5606eee | 216 | |
0b39b52e | 217 | static void trace_pass_command (const char *, int); |
1042e4c0 | 218 | |
558a9d82 YQ |
219 | static void set_tracepoint_count (int num); |
220 | ||
f2478a7e | 221 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 222 | |
983af33b SDJ |
223 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
224 | otherwise. */ | |
225 | ||
226 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 227 | |
8613a476 TT |
228 | static void bkpt_probe_create_sals_from_location |
229 | (struct event_location *location, | |
03ada39e | 230 | struct linespec_result *canonical); |
8613a476 TT |
231 | static void tracepoint_probe_create_sals_from_location |
232 | (struct event_location *location, | |
03ada39e | 233 | struct linespec_result *canonical); |
8613a476 | 234 | |
a678887d | 235 | const struct breakpoint_ops base_breakpoint_ops = |
8613a476 TT |
236 | { |
237 | create_sals_from_location_default, | |
eee031e2 | 238 | create_breakpoints_sal, |
8613a476 TT |
239 | }; |
240 | ||
55aa24fb | 241 | /* Breakpoints set on probes. */ |
a678887d | 242 | static const struct breakpoint_ops bkpt_probe_breakpoint_ops = |
8613a476 TT |
243 | { |
244 | bkpt_probe_create_sals_from_location, | |
eee031e2 | 245 | create_breakpoints_sal, |
8613a476 | 246 | }; |
55aa24fb | 247 | |
bac7c5cf | 248 | /* Tracepoints set on probes. */ |
a678887d | 249 | static const struct breakpoint_ops tracepoint_probe_breakpoint_ops = |
8613a476 TT |
250 | { |
251 | tracepoint_probe_create_sals_from_location, | |
eee031e2 | 252 | create_breakpoints_sal, |
8613a476 | 253 | }; |
bac7c5cf | 254 | |
1c2cbcf1 PA |
255 | /* Implementation of abstract dtors. These must exist to satisfy the |
256 | linker. */ | |
257 | ||
258 | breakpoint::~breakpoint () | |
259 | { | |
260 | } | |
261 | ||
262 | base_breakpoint::~base_breakpoint () | |
263 | { | |
264 | } | |
265 | ||
266 | catchpoint::~catchpoint () | |
267 | { | |
268 | } | |
269 | ||
098f1272 TT |
270 | /* The structure to be used in regular breakpoints. */ |
271 | struct ordinary_breakpoint : public base_breakpoint | |
272 | { | |
73063f51 TT |
273 | using base_breakpoint::base_breakpoint; |
274 | ||
7dd8e7ae | 275 | int resources_needed (const struct bp_location *) override; |
7bd86313 | 276 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 277 | void print_mention () const override; |
4d1ae558 | 278 | void print_recreate (struct ui_file *fp) const override; |
098f1272 TT |
279 | }; |
280 | ||
281 | /* Internal breakpoints. */ | |
282 | struct internal_breakpoint : public base_breakpoint | |
283 | { | |
73063f51 TT |
284 | using base_breakpoint::base_breakpoint; |
285 | ||
c359fff5 TT |
286 | void re_set () override; |
287 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 288 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 289 | void print_mention () const override; |
098f1272 TT |
290 | }; |
291 | ||
292 | /* Momentary breakpoints. */ | |
293 | struct momentary_breakpoint : public base_breakpoint | |
294 | { | |
73063f51 TT |
295 | using base_breakpoint::base_breakpoint; |
296 | ||
1fd30a47 TT |
297 | void re_set () override; |
298 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 299 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 300 | void print_mention () const override; |
098f1272 TT |
301 | }; |
302 | ||
303 | /* DPrintf breakpoints. */ | |
5ad71d67 | 304 | struct dprintf_breakpoint : public ordinary_breakpoint |
098f1272 | 305 | { |
73063f51 TT |
306 | using ordinary_breakpoint::ordinary_breakpoint; |
307 | ||
f293a0b5 TT |
308 | void re_set () override; |
309 | int breakpoint_hit (const struct bp_location *bl, | |
310 | const address_space *aspace, | |
311 | CORE_ADDR bp_addr, | |
312 | const target_waitstatus &ws) override; | |
4d1ae558 | 313 | void print_recreate (struct ui_file *fp) const override; |
f293a0b5 | 314 | void after_condition_true (struct bpstat *bs) override; |
098f1272 TT |
315 | }; |
316 | ||
ec45bb67 TT |
317 | /* Ranged breakpoints. */ |
318 | struct ranged_breakpoint : public ordinary_breakpoint | |
319 | { | |
73063f51 TT |
320 | explicit ranged_breakpoint (struct gdbarch *gdbarch) |
321 | : ordinary_breakpoint (gdbarch, bp_hardware_breakpoint) | |
322 | { | |
323 | } | |
324 | ||
ec45bb67 TT |
325 | int breakpoint_hit (const struct bp_location *bl, |
326 | const address_space *aspace, | |
327 | CORE_ADDR bp_addr, | |
328 | const target_waitstatus &ws) override; | |
329 | int resources_needed (const struct bp_location *) override; | |
7bd86313 | 330 | enum print_stop_action print_it (const bpstat *bs) const override; |
a67bcaba | 331 | bool print_one (bp_location **) const override; |
ec45bb67 | 332 | void print_one_detail (struct ui_out *) const override; |
b713485d | 333 | void print_mention () const override; |
4d1ae558 | 334 | void print_recreate (struct ui_file *fp) const override; |
ec45bb67 TT |
335 | }; |
336 | ||
6d7a8c56 TT |
337 | /* Static tracepoints with marker (`-m'). */ |
338 | struct static_marker_tracepoint : public tracepoint | |
339 | { | |
73063f51 TT |
340 | using tracepoint::tracepoint; |
341 | ||
6d7a8c56 TT |
342 | std::vector<symtab_and_line> decode_location |
343 | (struct event_location *location, | |
344 | struct program_space *search_pspace) override; | |
345 | }; | |
346 | ||
d3ce09f5 SS |
347 | /* The style in which to perform a dynamic printf. This is a user |
348 | option because different output options have different tradeoffs; | |
349 | if GDB does the printing, there is better error handling if there | |
350 | is a problem with any of the arguments, but using an inferior | |
351 | function lets you have special-purpose printers and sending of | |
352 | output to the same place as compiled-in print functions. */ | |
353 | ||
354 | static const char dprintf_style_gdb[] = "gdb"; | |
355 | static const char dprintf_style_call[] = "call"; | |
356 | static const char dprintf_style_agent[] = "agent"; | |
357 | static const char *const dprintf_style_enums[] = { | |
358 | dprintf_style_gdb, | |
359 | dprintf_style_call, | |
360 | dprintf_style_agent, | |
361 | NULL | |
362 | }; | |
363 | static const char *dprintf_style = dprintf_style_gdb; | |
364 | ||
365 | /* The function to use for dynamic printf if the preferred style is to | |
366 | call into the inferior. The value is simply a string that is | |
367 | copied into the command, so it can be anything that GDB can | |
368 | evaluate to a callable address, not necessarily a function name. */ | |
369 | ||
e0700ba4 | 370 | static std::string dprintf_function = "printf"; |
d3ce09f5 SS |
371 | |
372 | /* The channel to use for dynamic printf if the preferred style is to | |
373 | call into the inferior; if a nonempty string, it will be passed to | |
374 | the call as the first argument, with the format string as the | |
375 | second. As with the dprintf function, this can be anything that | |
376 | GDB knows how to evaluate, so in addition to common choices like | |
377 | "stderr", this could be an app-specific expression like | |
378 | "mystreams[curlogger]". */ | |
379 | ||
e0700ba4 | 380 | static std::string dprintf_channel; |
d3ce09f5 SS |
381 | |
382 | /* True if dprintf commands should continue to operate even if GDB | |
383 | has disconnected. */ | |
491144b5 | 384 | static bool disconnected_dprintf = true; |
d3ce09f5 | 385 | |
5cea2a26 PA |
386 | struct command_line * |
387 | breakpoint_commands (struct breakpoint *b) | |
388 | { | |
d1b0a7bf | 389 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 390 | } |
3daf8fe5 | 391 | |
f3b1572e PA |
392 | /* Flag indicating that a command has proceeded the inferior past the |
393 | current breakpoint. */ | |
394 | ||
491144b5 | 395 | static bool breakpoint_proceeded; |
f3b1572e | 396 | |
956a9fb9 | 397 | const char * |
2cec12e5 AR |
398 | bpdisp_text (enum bpdisp disp) |
399 | { | |
4a64f543 MS |
400 | /* NOTE: the following values are a part of MI protocol and |
401 | represent values of 'disp' field returned when inferior stops at | |
402 | a breakpoint. */ | |
bc043ef3 | 403 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 404 | |
2cec12e5 AR |
405 | return bpdisps[(int) disp]; |
406 | } | |
c906108c | 407 | |
4a64f543 | 408 | /* Prototypes for exported functions. */ |
c906108c | 409 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 410 | if such is available. */ |
c906108c SS |
411 | static int can_use_hw_watchpoints; |
412 | ||
920d2a44 AC |
413 | static void |
414 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
415 | struct cmd_list_element *c, | |
416 | const char *value) | |
417 | { | |
6cb06a8c TT |
418 | gdb_printf (file, |
419 | _("Debugger's willingness to use " | |
420 | "watchpoint hardware is %s.\n"), | |
421 | value); | |
920d2a44 AC |
422 | } |
423 | ||
fa8d40ab JJ |
424 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
425 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 426 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
427 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
428 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
429 | static void |
430 | show_pending_break_support (struct ui_file *file, int from_tty, | |
431 | struct cmd_list_element *c, | |
432 | const char *value) | |
433 | { | |
6cb06a8c TT |
434 | gdb_printf (file, |
435 | _("Debugger's behavior regarding " | |
436 | "pending breakpoints is %s.\n"), | |
437 | value); | |
920d2a44 | 438 | } |
fa8d40ab | 439 | |
491144b5 | 440 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 441 | set with "break" but falling in read-only memory. |
491144b5 | 442 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 443 | use hardware breakpoints. */ |
491144b5 | 444 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
445 | static void |
446 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
447 | struct cmd_list_element *c, | |
448 | const char *value) | |
449 | { | |
6cb06a8c TT |
450 | gdb_printf (file, |
451 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
452 | value); | |
765dc015 VP |
453 | } |
454 | ||
a25a5a45 PA |
455 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
456 | stopped, and immediately inserts any new breakpoints as soon as | |
457 | they're created. If off (default), GDB keeps breakpoints off of | |
458 | the target as long as possible. That is, it delays inserting | |
459 | breakpoints until the next resume, and removes them again when the | |
460 | target fully stops. This is a bit safer in case GDB crashes while | |
461 | processing user input. */ | |
491144b5 | 462 | static bool always_inserted_mode = false; |
72d0e2c5 | 463 | |
33e5cbd6 | 464 | static void |
74960c60 | 465 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 466 | struct cmd_list_element *c, const char *value) |
74960c60 | 467 | { |
6cb06a8c TT |
468 | gdb_printf (file, _("Always inserted breakpoint mode is %s.\n"), |
469 | value); | |
74960c60 VP |
470 | } |
471 | ||
b57bacec PA |
472 | /* See breakpoint.h. */ |
473 | ||
33e5cbd6 | 474 | int |
a25a5a45 | 475 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 476 | { |
a25a5a45 PA |
477 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
478 | { | |
479 | /* If breakpoints are global, they should be inserted even if no | |
480 | thread under gdb's control is running, or even if there are | |
481 | no threads under GDB's control yet. */ | |
482 | return 1; | |
483 | } | |
5b6d1e4f | 484 | else |
a25a5a45 | 485 | { |
a25a5a45 PA |
486 | if (always_inserted_mode) |
487 | { | |
488 | /* The user wants breakpoints inserted even if all threads | |
489 | are stopped. */ | |
490 | return 1; | |
491 | } | |
492 | ||
5b6d1e4f PA |
493 | for (inferior *inf : all_inferiors ()) |
494 | if (inf->has_execution () | |
495 | && threads_are_executing (inf->process_target ())) | |
496 | return 1; | |
372316f1 PA |
497 | |
498 | /* Don't remove breakpoints yet if, even though all threads are | |
499 | stopped, we still have events to process. */ | |
08036331 | 500 | for (thread_info *tp : all_non_exited_threads ()) |
1edb66d8 | 501 | if (tp->resumed () && tp->has_pending_waitstatus ()) |
372316f1 | 502 | return 1; |
a25a5a45 PA |
503 | } |
504 | return 0; | |
33e5cbd6 | 505 | } |
765dc015 | 506 | |
b775012e LM |
507 | static const char condition_evaluation_both[] = "host or target"; |
508 | ||
509 | /* Modes for breakpoint condition evaluation. */ | |
510 | static const char condition_evaluation_auto[] = "auto"; | |
511 | static const char condition_evaluation_host[] = "host"; | |
512 | static const char condition_evaluation_target[] = "target"; | |
513 | static const char *const condition_evaluation_enums[] = { | |
514 | condition_evaluation_auto, | |
515 | condition_evaluation_host, | |
516 | condition_evaluation_target, | |
517 | NULL | |
518 | }; | |
519 | ||
520 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
521 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
522 | ||
523 | /* Global that we use to display information to the user (gets its value from | |
524 | condition_evaluation_mode_1. */ | |
525 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
526 | ||
527 | /* Translate a condition evaluation mode MODE into either "host" | |
528 | or "target". This is used mostly to translate from "auto" to the | |
529 | real setting that is being used. It returns the translated | |
530 | evaluation mode. */ | |
531 | ||
532 | static const char * | |
533 | translate_condition_evaluation_mode (const char *mode) | |
534 | { | |
535 | if (mode == condition_evaluation_auto) | |
536 | { | |
537 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
538 | return condition_evaluation_target; | |
539 | else | |
540 | return condition_evaluation_host; | |
541 | } | |
542 | else | |
543 | return mode; | |
544 | } | |
545 | ||
546 | /* Discovers what condition_evaluation_auto translates to. */ | |
547 | ||
548 | static const char * | |
549 | breakpoint_condition_evaluation_mode (void) | |
550 | { | |
551 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
552 | } | |
553 | ||
554 | /* Return true if GDB should evaluate breakpoint conditions or false | |
555 | otherwise. */ | |
556 | ||
557 | static int | |
558 | gdb_evaluates_breakpoint_condition_p (void) | |
559 | { | |
560 | const char *mode = breakpoint_condition_evaluation_mode (); | |
561 | ||
562 | return (mode == condition_evaluation_host); | |
563 | } | |
564 | ||
c906108c SS |
565 | /* Are we executing breakpoint commands? */ |
566 | static int executing_breakpoint_commands; | |
567 | ||
c02f5703 MS |
568 | /* Are overlay event breakpoints enabled? */ |
569 | static int overlay_events_enabled; | |
570 | ||
e09342b5 | 571 | /* See description in breakpoint.h. */ |
491144b5 | 572 | bool target_exact_watchpoints = false; |
e09342b5 | 573 | |
c906108c | 574 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 575 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 576 | current breakpoint. */ |
c906108c | 577 | |
5c44784c JM |
578 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
579 | for (B = breakpoint_chain; \ | |
580 | B ? (TMP=B->next, 1): 0; \ | |
581 | B = TMP) | |
c906108c | 582 | |
7cc221ef | 583 | /* Chains of all breakpoints defined. */ |
c906108c | 584 | |
81e6b8eb | 585 | static struct breakpoint *breakpoint_chain; |
c906108c | 586 | |
240edef6 | 587 | /* See breakpoint.h. */ |
43892fdf | 588 | |
240edef6 | 589 | breakpoint_range |
43892fdf SM |
590 | all_breakpoints () |
591 | { | |
592 | return breakpoint_range (breakpoint_chain); | |
593 | } | |
594 | ||
240edef6 | 595 | /* See breakpoint.h. */ |
1428b37a | 596 | |
240edef6 | 597 | breakpoint_safe_range |
1428b37a SM |
598 | all_breakpoints_safe () |
599 | { | |
600 | return breakpoint_safe_range (all_breakpoints ()); | |
601 | } | |
602 | ||
f6d17b2b SM |
603 | /* See breakpoint.h. */ |
604 | ||
605 | tracepoint_range | |
606 | all_tracepoints () | |
607 | { | |
608 | return tracepoint_range (breakpoint_chain); | |
609 | } | |
610 | ||
39ef2f62 | 611 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 612 | |
5d51cd5d | 613 | static std::vector<bp_location *> bp_locations; |
876fa593 | 614 | |
055c879f SM |
615 | /* See breakpoint.h. */ |
616 | ||
617 | const std::vector<bp_location *> & | |
48d7020b SM |
618 | all_bp_locations () |
619 | { | |
620 | return bp_locations; | |
621 | } | |
622 | ||
e0d9a270 SM |
623 | /* Range to iterate over breakpoint locations at a given address. */ |
624 | ||
625 | struct bp_locations_at_addr_range | |
626 | { | |
627 | using iterator = std::vector<bp_location *>::iterator; | |
628 | ||
629 | bp_locations_at_addr_range (CORE_ADDR addr) | |
630 | { | |
631 | struct compare | |
632 | { | |
633 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
634 | { return loc->address < addr_; } | |
635 | ||
636 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
637 | { return addr_ < loc->address; } | |
638 | }; | |
639 | ||
640 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
641 | addr, compare ()); | |
642 | ||
643 | m_begin = it_pair.first; | |
644 | m_end = it_pair.second; | |
645 | } | |
646 | ||
647 | iterator begin () const | |
648 | { return m_begin; } | |
649 | ||
650 | iterator end () const | |
651 | { return m_end; } | |
652 | ||
653 | private: | |
654 | iterator m_begin; | |
655 | iterator m_end; | |
656 | }; | |
657 | ||
658 | /* Return a range to iterate over all breakpoint locations exactly at address | |
659 | ADDR. | |
660 | ||
661 | If it's needed to iterate multiple times on the same range, it's possible | |
662 | to save the range in a local variable and use it multiple times: | |
663 | ||
664 | auto range = all_bp_locations_at_addr (addr); | |
665 | ||
666 | for (bp_location *loc : range) | |
667 | // use loc | |
668 | ||
669 | for (bp_location *loc : range) | |
670 | // use loc | |
671 | ||
672 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
673 | the range's boundaries. Just remember not to change the bp_locations vector | |
674 | in the mean time, as it could make the range's iterators stale. */ | |
675 | ||
676 | static bp_locations_at_addr_range | |
677 | all_bp_locations_at_addr (CORE_ADDR addr) | |
678 | { | |
679 | return bp_locations_at_addr_range (addr); | |
680 | } | |
681 | ||
4a64f543 | 682 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 683 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 684 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 685 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 686 | an address you need to read. */ |
876fa593 | 687 | |
f5336ca5 | 688 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 689 | |
4a64f543 MS |
690 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
691 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
692 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
693 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 694 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 695 | |
f5336ca5 | 696 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 697 | |
4a64f543 | 698 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
699 | from the bp_locations array, but for which a hit may still be |
700 | reported by a target. */ | |
1123588c | 701 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 702 | |
c906108c SS |
703 | /* Number of last breakpoint made. */ |
704 | ||
95a42b64 TT |
705 | static int breakpoint_count; |
706 | ||
86b17b60 PA |
707 | /* The value of `breakpoint_count' before the last command that |
708 | created breakpoints. If the last (break-like) command created more | |
709 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
710 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
711 | static int prev_breakpoint_count; | |
c906108c | 712 | |
1042e4c0 SS |
713 | /* Number of last tracepoint made. */ |
714 | ||
95a42b64 | 715 | static int tracepoint_count; |
1042e4c0 | 716 | |
6149aea9 PA |
717 | static struct cmd_list_element *breakpoint_set_cmdlist; |
718 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 719 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 720 | |
468d015d JJ |
721 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
722 | static int | |
723 | breakpoint_enabled (struct breakpoint *b) | |
724 | { | |
0d381245 | 725 | return (b->enable_state == bp_enabled); |
468d015d JJ |
726 | } |
727 | ||
c906108c SS |
728 | /* Set breakpoint count to NUM. */ |
729 | ||
95a42b64 | 730 | static void |
fba45db2 | 731 | set_breakpoint_count (int num) |
c906108c | 732 | { |
86b17b60 | 733 | prev_breakpoint_count = breakpoint_count; |
c906108c | 734 | breakpoint_count = num; |
4fa62494 | 735 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
736 | } |
737 | ||
86b17b60 PA |
738 | /* Used by `start_rbreak_breakpoints' below, to record the current |
739 | breakpoint count before "rbreak" creates any breakpoint. */ | |
740 | static int rbreak_start_breakpoint_count; | |
741 | ||
95a42b64 TT |
742 | /* Called at the start an "rbreak" command to record the first |
743 | breakpoint made. */ | |
86b17b60 | 744 | |
c80049d3 | 745 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 746 | { |
86b17b60 | 747 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
748 | } |
749 | ||
750 | /* Called at the end of an "rbreak" command to record the last | |
751 | breakpoint made. */ | |
86b17b60 | 752 | |
c80049d3 | 753 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 754 | { |
86b17b60 | 755 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
756 | } |
757 | ||
4a64f543 | 758 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
759 | |
760 | void | |
fba45db2 | 761 | clear_breakpoint_hit_counts (void) |
c906108c | 762 | { |
43892fdf | 763 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
764 | b->hit_count = 0; |
765 | } | |
766 | ||
c906108c | 767 | \f |
48cb2d85 VP |
768 | /* Return the breakpoint with the specified number, or NULL |
769 | if the number does not refer to an existing breakpoint. */ | |
770 | ||
771 | struct breakpoint * | |
772 | get_breakpoint (int num) | |
773 | { | |
43892fdf | 774 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
775 | if (b->number == num) |
776 | return b; | |
777 | ||
43892fdf | 778 | return nullptr; |
48cb2d85 | 779 | } |
5c44784c | 780 | |
c906108c | 781 | \f |
adc36818 | 782 | |
b775012e LM |
783 | /* Mark locations as "conditions have changed" in case the target supports |
784 | evaluating conditions on its side. */ | |
785 | ||
786 | static void | |
787 | mark_breakpoint_modified (struct breakpoint *b) | |
788 | { | |
b775012e LM |
789 | /* This is only meaningful if the target is |
790 | evaluating conditions and if the user has | |
791 | opted for condition evaluation on the target's | |
792 | side. */ | |
793 | if (gdb_evaluates_breakpoint_condition_p () | |
794 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
795 | return; | |
796 | ||
797 | if (!is_breakpoint (b)) | |
798 | return; | |
799 | ||
40cb8ca5 | 800 | for (bp_location *loc : b->locations ()) |
b775012e LM |
801 | loc->condition_changed = condition_modified; |
802 | } | |
803 | ||
804 | /* Mark location as "conditions have changed" in case the target supports | |
805 | evaluating conditions on its side. */ | |
806 | ||
807 | static void | |
808 | mark_breakpoint_location_modified (struct bp_location *loc) | |
809 | { | |
810 | /* This is only meaningful if the target is | |
811 | evaluating conditions and if the user has | |
812 | opted for condition evaluation on the target's | |
813 | side. */ | |
814 | if (gdb_evaluates_breakpoint_condition_p () | |
815 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
816 | ||
817 | return; | |
818 | ||
819 | if (!is_breakpoint (loc->owner)) | |
820 | return; | |
821 | ||
822 | loc->condition_changed = condition_modified; | |
823 | } | |
824 | ||
825 | /* Sets the condition-evaluation mode using the static global | |
826 | condition_evaluation_mode. */ | |
827 | ||
828 | static void | |
eb4c3f4a | 829 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
830 | struct cmd_list_element *c) |
831 | { | |
b775012e LM |
832 | const char *old_mode, *new_mode; |
833 | ||
834 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
835 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
836 | { | |
837 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
838 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
839 | "Using host evaluation mode instead.")); | |
840 | return; | |
841 | } | |
842 | ||
843 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
844 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
845 | ||
abf1152a JK |
846 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
847 | settings was "auto". */ | |
848 | condition_evaluation_mode = condition_evaluation_mode_1; | |
849 | ||
b775012e LM |
850 | /* Only update the mode if the user picked a different one. */ |
851 | if (new_mode != old_mode) | |
852 | { | |
b775012e LM |
853 | /* If the user switched to a different evaluation mode, we |
854 | need to synch the changes with the target as follows: | |
855 | ||
856 | "host" -> "target": Send all (valid) conditions to the target. | |
857 | "target" -> "host": Remove all the conditions from the target. | |
858 | */ | |
859 | ||
b775012e LM |
860 | if (new_mode == condition_evaluation_target) |
861 | { | |
862 | /* Mark everything modified and synch conditions with the | |
863 | target. */ | |
48d7020b | 864 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 865 | mark_breakpoint_location_modified (loc); |
24b21115 | 866 | } |
b775012e LM |
867 | else |
868 | { | |
869 | /* Manually mark non-duplicate locations to synch conditions | |
870 | with the target. We do this to remove all the conditions the | |
871 | target knows about. */ | |
48d7020b | 872 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
873 | if (is_breakpoint (loc->owner) && loc->inserted) |
874 | loc->needs_update = 1; | |
875 | } | |
876 | ||
877 | /* Do the update. */ | |
44702360 | 878 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
879 | } |
880 | ||
881 | return; | |
882 | } | |
883 | ||
884 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
885 | what "auto" is translating to. */ | |
886 | ||
887 | static void | |
888 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
889 | struct cmd_list_element *c, const char *value) | |
890 | { | |
891 | if (condition_evaluation_mode == condition_evaluation_auto) | |
6cb06a8c TT |
892 | gdb_printf (file, |
893 | _("Breakpoint condition evaluation " | |
894 | "mode is %s (currently %s).\n"), | |
895 | value, | |
896 | breakpoint_condition_evaluation_mode ()); | |
b775012e | 897 | else |
6cb06a8c TT |
898 | gdb_printf (file, _("Breakpoint condition evaluation mode is %s.\n"), |
899 | value); | |
b775012e LM |
900 | } |
901 | ||
b5fa468f TBA |
902 | /* Parse COND_STRING in the context of LOC and set as the condition |
903 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
904 | the number of LOC within its owner. In case of parsing error, mark | |
905 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
906 | ||
907 | static void | |
908 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
909 | int bp_num, int loc_num) | |
910 | { | |
911 | bool has_junk = false; | |
912 | try | |
913 | { | |
914 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
915 | block_for_pc (loc->address), 0); | |
916 | if (*cond_string != 0) | |
917 | has_junk = true; | |
918 | else | |
919 | { | |
920 | loc->cond = std::move (new_exp); | |
921 | if (loc->disabled_by_cond && loc->enabled) | |
6cb06a8c TT |
922 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
923 | "location %d, enabling.\n"), | |
924 | bp_num, loc_num); | |
b5fa468f TBA |
925 | |
926 | loc->disabled_by_cond = false; | |
927 | } | |
928 | } | |
929 | catch (const gdb_exception_error &e) | |
930 | { | |
931 | if (loc->enabled) | |
932 | { | |
933 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
934 | BP_NUM is 0 if the breakpoint is being defined for the first | |
935 | time using the "break ... if ..." command, and non-zero if | |
936 | already defined. */ | |
937 | if (bp_num != 0) | |
938 | warning (_("failed to validate condition at location %d.%d, " | |
939 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
940 | else | |
941 | warning (_("failed to validate condition at location %d, " | |
942 | "disabling:\n %s"), loc_num, e.what ()); | |
943 | } | |
944 | ||
945 | loc->disabled_by_cond = true; | |
946 | } | |
947 | ||
948 | if (has_junk) | |
949 | error (_("Garbage '%s' follows condition"), cond_string); | |
950 | } | |
951 | ||
adc36818 | 952 | void |
7a26bd4d | 953 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 954 | int from_tty, bool force) |
adc36818 | 955 | { |
4c55e970 | 956 | if (*exp == 0) |
3a5c3e22 | 957 | { |
6f781ee3 | 958 | b->cond_string.reset (); |
3a5c3e22 | 959 | |
4c55e970 | 960 | if (is_watchpoint (b)) |
78319c15 | 961 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
962 | else |
963 | { | |
b5fa468f | 964 | int loc_num = 1; |
40cb8ca5 | 965 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
966 | { |
967 | loc->cond.reset (); | |
b5fa468f | 968 | if (loc->disabled_by_cond && loc->enabled) |
6cb06a8c TT |
969 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
970 | "location %d, enabling.\n"), | |
971 | b->number, loc_num); | |
b5fa468f TBA |
972 | loc->disabled_by_cond = false; |
973 | loc_num++; | |
4c55e970 TBA |
974 | |
975 | /* No need to free the condition agent expression | |
976 | bytecode (if we have one). We will handle this | |
977 | when we go through update_global_location_list. */ | |
978 | } | |
979 | } | |
1e620590 | 980 | |
adc36818 | 981 | if (from_tty) |
6cb06a8c | 982 | gdb_printf (_("Breakpoint %d now unconditional.\n"), b->number); |
adc36818 PM |
983 | } |
984 | else | |
985 | { | |
adc36818 PM |
986 | if (is_watchpoint (b)) |
987 | { | |
699bd4cf | 988 | innermost_block_tracker tracker; |
78319c15 | 989 | const char *arg = exp; |
4c55e970 | 990 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 991 | if (*arg != 0) |
adc36818 | 992 | error (_("Junk at end of expression")); |
78319c15 | 993 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 994 | w->cond_exp = std::move (new_exp); |
699bd4cf | 995 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
996 | } |
997 | else | |
998 | { | |
4c55e970 TBA |
999 | /* Parse and set condition expressions. We make two passes. |
1000 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
1001 | is valid in at least one location. If so, the condition |
1002 | would be accepted. So we go ahead and set the locations' | |
1003 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
1004 | the error and the condition string will be rejected. |
1005 | This two-pass approach is taken to avoid setting the | |
1006 | state of locations in case of a reject. */ | |
40cb8ca5 | 1007 | for (bp_location *loc : b->locations ()) |
4c55e970 | 1008 | { |
b5fa468f TBA |
1009 | try |
1010 | { | |
1011 | const char *arg = exp; | |
1012 | parse_exp_1 (&arg, loc->address, | |
1013 | block_for_pc (loc->address), 0); | |
1014 | if (*arg != 0) | |
1015 | error (_("Junk at end of expression")); | |
1016 | break; | |
1017 | } | |
1018 | catch (const gdb_exception_error &e) | |
1019 | { | |
1020 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
1021 | be the last loc, abandon (if not forced) or continue |
1022 | (if forced). */ | |
1023 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
1024 | throw; |
1025 | } | |
4c55e970 TBA |
1026 | } |
1027 | ||
b5fa468f | 1028 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 1029 | int loc_num = 1; |
40cb8ca5 SM |
1030 | for (bp_location *loc : b->locations ()) |
1031 | { | |
1032 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
1033 | loc_num++; | |
1034 | } | |
adc36818 | 1035 | } |
1e620590 TBA |
1036 | |
1037 | /* We know that the new condition parsed successfully. The | |
1038 | condition string of the breakpoint can be safely updated. */ | |
6f781ee3 | 1039 | b->cond_string = make_unique_xstrdup (exp); |
1e620590 | 1040 | b->condition_not_parsed = 0; |
adc36818 | 1041 | } |
b775012e LM |
1042 | mark_breakpoint_modified (b); |
1043 | ||
76727919 | 1044 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
1045 | } |
1046 | ||
79aabb73 TBA |
1047 | /* See breakpoint.h. */ |
1048 | ||
1049 | void | |
1050 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
1051 | bool force) | |
1052 | { | |
43892fdf | 1053 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
1054 | if (b->number == bpnum) |
1055 | { | |
1056 | /* Check if this breakpoint has a "stop" method implemented in an | |
1057 | extension language. This method and conditions entered into GDB | |
1058 | from the CLI are mutually exclusive. */ | |
1059 | const struct extension_language_defn *extlang | |
1060 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1061 | ||
1062 | if (extlang != NULL) | |
1063 | { | |
1064 | error (_("Only one stop condition allowed. There is currently" | |
1065 | " a %s stop condition defined for this breakpoint."), | |
1066 | ext_lang_capitalized_name (extlang)); | |
1067 | } | |
1068 | set_breakpoint_condition (b, exp, from_tty, force); | |
1069 | ||
1070 | if (is_breakpoint (b)) | |
1071 | update_global_location_list (UGLL_MAY_INSERT); | |
1072 | ||
1073 | return; | |
1074 | } | |
1075 | ||
1076 | error (_("No breakpoint number %d."), bpnum); | |
1077 | } | |
1078 | ||
b1d4d8d1 TBA |
1079 | /* The options for the "condition" command. */ |
1080 | ||
1081 | struct condition_command_opts | |
1082 | { | |
1083 | /* For "-force". */ | |
1084 | bool force_condition = false; | |
1085 | }; | |
1086 | ||
1087 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1088 | ||
1089 | gdb::option::flag_option_def<condition_command_opts> { | |
1090 | "force", | |
1091 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1092 | N_("Set the condition even if it is invalid for all current locations."), | |
1093 | }, | |
1094 | ||
1095 | }; | |
1096 | ||
1097 | /* Create an option_def_group for the "condition" options, with | |
1098 | CC_OPTS as context. */ | |
1099 | ||
1100 | static inline gdb::option::option_def_group | |
1101 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1102 | { | |
1103 | return {{condition_command_option_defs}, cc_opts}; | |
1104 | } | |
1105 | ||
d55637df TT |
1106 | /* Completion for the "condition" command. */ |
1107 | ||
eb3ff9a5 | 1108 | static void |
6f937416 | 1109 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1110 | completion_tracker &tracker, |
b1d4d8d1 | 1111 | const char *text, const char * /*word*/) |
d55637df | 1112 | { |
b1d4d8d1 TBA |
1113 | bool has_no_arguments = (*text == '\0'); |
1114 | condition_command_opts cc_opts; | |
1115 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1116 | if (gdb::option::complete_options | |
1117 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1118 | return; | |
d55637df | 1119 | |
f1735a53 | 1120 | text = skip_spaces (text); |
b1d4d8d1 | 1121 | const char *space = skip_to_space (text); |
d55637df TT |
1122 | if (*space == '\0') |
1123 | { | |
1124 | int len; | |
d55637df TT |
1125 | |
1126 | if (text[0] == '$') | |
1127 | { | |
b1d4d8d1 | 1128 | tracker.advance_custom_word_point_by (1); |
d55637df | 1129 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1130 | if (!isdigit (text[1])) |
1131 | complete_internalvar (tracker, &text[1]); | |
1132 | return; | |
d55637df TT |
1133 | } |
1134 | ||
b1d4d8d1 TBA |
1135 | /* Suggest the "-force" flag if no arguments are given. If |
1136 | arguments were passed, they either already include the flag, | |
1137 | or we are beyond the point of suggesting it because it's | |
1138 | positionally the first argument. */ | |
1139 | if (has_no_arguments) | |
1140 | gdb::option::complete_on_all_options (tracker, group); | |
1141 | ||
d55637df TT |
1142 | /* We're completing the breakpoint number. */ |
1143 | len = strlen (text); | |
1144 | ||
43892fdf | 1145 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1146 | { |
1147 | char number[50]; | |
1148 | ||
1149 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1150 | ||
1151 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1152 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1153 | } |
d55637df | 1154 | |
eb3ff9a5 | 1155 | return; |
d55637df TT |
1156 | } |
1157 | ||
b1d4d8d1 TBA |
1158 | /* We're completing the expression part. Skip the breakpoint num. */ |
1159 | const char *exp_start = skip_spaces (space); | |
1160 | tracker.advance_custom_word_point_by (exp_start - text); | |
1161 | text = exp_start; | |
1162 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1163 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1164 | } |
1165 | ||
c906108c SS |
1166 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1167 | ||
1168 | static void | |
0b39b52e | 1169 | condition_command (const char *arg, int from_tty) |
c906108c | 1170 | { |
0b39b52e | 1171 | const char *p; |
52f0bd74 | 1172 | int bnum; |
c906108c SS |
1173 | |
1174 | if (arg == 0) | |
e2e0b3e5 | 1175 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1176 | |
1177 | p = arg; | |
733d554a TBA |
1178 | |
1179 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1180 | condition_command_opts cc_opts; |
1181 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1182 | gdb::option::process_options | |
1183 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1184 | |
c906108c | 1185 | bnum = get_number (&p); |
5c44784c | 1186 | if (bnum == 0) |
8a3fe4f8 | 1187 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1188 | |
79aabb73 | 1189 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1190 | } |
1191 | ||
a7bdde9e VP |
1192 | /* Check that COMMAND do not contain commands that are suitable |
1193 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1194 | Throw if any such commands is found. */ |
1195 | ||
a7bdde9e VP |
1196 | static void |
1197 | check_no_tracepoint_commands (struct command_line *commands) | |
1198 | { | |
1199 | struct command_line *c; | |
cc59ec59 | 1200 | |
a7bdde9e VP |
1201 | for (c = commands; c; c = c->next) |
1202 | { | |
a7bdde9e | 1203 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1204 | error (_("The 'while-stepping' command can " |
1205 | "only be used for tracepoints")); | |
a7bdde9e | 1206 | |
12973681 TT |
1207 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1208 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1209 | |
1210 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1211 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1212 | command directly. */ |
1213 | if (strstr (c->line, "collect ") == c->line) | |
1214 | error (_("The 'collect' command can only be used for tracepoints")); | |
1215 | ||
51661e93 VP |
1216 | if (strstr (c->line, "teval ") == c->line) |
1217 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1218 | } |
1219 | } | |
1220 | ||
098f1272 | 1221 | struct longjmp_breakpoint : public momentary_breakpoint |
3b0871f4 | 1222 | { |
73063f51 TT |
1223 | using momentary_breakpoint::momentary_breakpoint; |
1224 | ||
c1fc2657 | 1225 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1226 | }; |
1227 | ||
d77f58be SS |
1228 | /* Encapsulate tests for different types of tracepoints. */ |
1229 | ||
3b0871f4 SM |
1230 | static bool |
1231 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1232 | { |
1233 | return (type == bp_tracepoint | |
1234 | || type == bp_fast_tracepoint | |
7b572efb TT |
1235 | || type == bp_static_tracepoint |
1236 | || type == bp_static_marker_tracepoint); | |
d9b3f62e PA |
1237 | } |
1238 | ||
f2478a7e SM |
1239 | /* See breakpoint.h. */ |
1240 | ||
1241 | bool | |
d77f58be | 1242 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1243 | { |
d9b3f62e | 1244 | return is_tracepoint_type (b->type); |
a7bdde9e | 1245 | } |
d9b3f62e | 1246 | |
a5e364af SM |
1247 | /* Factory function to create an appropriate instance of breakpoint given |
1248 | TYPE. */ | |
1249 | ||
1250 | static std::unique_ptr<breakpoint> | |
73063f51 | 1251 | new_breakpoint_from_type (struct gdbarch *gdbarch, bptype type) |
a5e364af SM |
1252 | { |
1253 | breakpoint *b; | |
1254 | ||
098f1272 TT |
1255 | switch (type) |
1256 | { | |
1257 | case bp_breakpoint: | |
1258 | case bp_hardware_breakpoint: | |
73063f51 | 1259 | b = new ordinary_breakpoint (gdbarch, type); |
098f1272 TT |
1260 | break; |
1261 | ||
1262 | case bp_fast_tracepoint: | |
1263 | case bp_static_tracepoint: | |
1264 | case bp_tracepoint: | |
73063f51 | 1265 | b = new tracepoint (gdbarch, type); |
098f1272 TT |
1266 | break; |
1267 | ||
6d7a8c56 | 1268 | case bp_static_marker_tracepoint: |
73063f51 | 1269 | b = new static_marker_tracepoint (gdbarch, type); |
6d7a8c56 TT |
1270 | break; |
1271 | ||
098f1272 | 1272 | case bp_dprintf: |
73063f51 | 1273 | b = new dprintf_breakpoint (gdbarch, type); |
098f1272 TT |
1274 | break; |
1275 | ||
1276 | case bp_overlay_event: | |
1277 | case bp_longjmp_master: | |
1278 | case bp_std_terminate_master: | |
1279 | case bp_exception_master: | |
1280 | case bp_thread_event: | |
1281 | case bp_jit_event: | |
1282 | case bp_shlib_event: | |
73063f51 | 1283 | b = new internal_breakpoint (gdbarch, type); |
098f1272 TT |
1284 | break; |
1285 | ||
1286 | case bp_longjmp: | |
1287 | case bp_exception: | |
73063f51 | 1288 | b = new longjmp_breakpoint (gdbarch, type); |
098f1272 TT |
1289 | break; |
1290 | ||
1291 | case bp_watchpoint_scope: | |
1292 | case bp_finish: | |
1293 | case bp_gnu_ifunc_resolver_return: | |
1294 | case bp_step_resume: | |
1295 | case bp_hp_step_resume: | |
1296 | case bp_longjmp_resume: | |
1297 | case bp_longjmp_call_dummy: | |
1298 | case bp_exception_resume: | |
1299 | case bp_call_dummy: | |
1300 | case bp_until: | |
1301 | case bp_std_terminate: | |
73063f51 | 1302 | b = new momentary_breakpoint (gdbarch, type); |
098f1272 TT |
1303 | break; |
1304 | ||
1305 | default: | |
1306 | gdb_assert_not_reached ("invalid type"); | |
1307 | } | |
a5e364af SM |
1308 | |
1309 | return std::unique_ptr<breakpoint> (b); | |
1310 | } | |
1311 | ||
e5dd4106 | 1312 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1313 | breakpoint. This function will throw an exception if a problem is |
1314 | found. */ | |
48cb2d85 | 1315 | |
95a42b64 TT |
1316 | static void |
1317 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1318 | struct command_line *commands) | |
48cb2d85 | 1319 | { |
d77f58be | 1320 | if (is_tracepoint (b)) |
a7bdde9e | 1321 | { |
c9a6ce02 | 1322 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1323 | struct command_line *c; |
1324 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1325 | |
1326 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1327 | might have included a while-stepping action, while the new |
1328 | ones might not. */ | |
c9a6ce02 PA |
1329 | t->step_count = 0; |
1330 | ||
1331 | /* We need to verify that each top-level element of commands is | |
1332 | valid for tracepoints, that there's at most one | |
1333 | while-stepping element, and that the while-stepping's body | |
1334 | has valid tracing commands excluding nested while-stepping. | |
1335 | We also need to validate the tracepoint action line in the | |
1336 | context of the tracepoint --- validate_actionline actually | |
1337 | has side effects, like setting the tracepoint's | |
1338 | while-stepping STEP_COUNT, in addition to checking if the | |
1339 | collect/teval actions parse and make sense in the | |
1340 | tracepoint's context. */ | |
a7bdde9e VP |
1341 | for (c = commands; c; c = c->next) |
1342 | { | |
a7bdde9e VP |
1343 | if (c->control_type == while_stepping_control) |
1344 | { | |
1345 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1346 | error (_("The 'while-stepping' command " |
1347 | "cannot be used for fast tracepoint")); | |
7b572efb TT |
1348 | else if (b->type == bp_static_tracepoint |
1349 | || b->type == bp_static_marker_tracepoint) | |
3e43a32a MS |
1350 | error (_("The 'while-stepping' command " |
1351 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1352 | |
1353 | if (while_stepping) | |
3e43a32a MS |
1354 | error (_("The 'while-stepping' command " |
1355 | "can be used only once")); | |
a7bdde9e VP |
1356 | else |
1357 | while_stepping = c; | |
1358 | } | |
c9a6ce02 PA |
1359 | |
1360 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1361 | } |
1362 | if (while_stepping) | |
1363 | { | |
1364 | struct command_line *c2; | |
1365 | ||
12973681 TT |
1366 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1367 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1368 | for (; c2; c2 = c2->next) |
1369 | { | |
a7bdde9e VP |
1370 | if (c2->control_type == while_stepping_control) |
1371 | error (_("The 'while-stepping' command cannot be nested")); | |
1372 | } | |
1373 | } | |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | check_no_tracepoint_commands (commands); | |
1378 | } | |
95a42b64 TT |
1379 | } |
1380 | ||
0fb4aa4b PA |
1381 | /* Return a vector of all the static tracepoints set at ADDR. The |
1382 | caller is responsible for releasing the vector. */ | |
1383 | ||
f51e0e20 | 1384 | std::vector<breakpoint *> |
0fb4aa4b PA |
1385 | static_tracepoints_here (CORE_ADDR addr) |
1386 | { | |
f51e0e20 | 1387 | std::vector<breakpoint *> found; |
0fb4aa4b | 1388 | |
43892fdf | 1389 | for (breakpoint *b : all_breakpoints ()) |
7b572efb TT |
1390 | if (b->type == bp_static_tracepoint |
1391 | || b->type == bp_static_marker_tracepoint) | |
0fb4aa4b | 1392 | { |
40cb8ca5 | 1393 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1394 | if (loc->address == addr) |
f51e0e20 | 1395 | found.push_back (b); |
0fb4aa4b PA |
1396 | } |
1397 | ||
1398 | return found; | |
1399 | } | |
1400 | ||
95a42b64 | 1401 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1402 | validate that only allowed commands are included. */ |
95a42b64 TT |
1403 | |
1404 | void | |
4a64f543 | 1405 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1406 | counted_command_line &&commands) |
95a42b64 | 1407 | { |
93921405 | 1408 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1409 | |
d1b0a7bf | 1410 | b->commands = std::move (commands); |
76727919 | 1411 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1412 | } |
1413 | ||
45a43567 TT |
1414 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1415 | is not the same as the "silent" that may appear in the breakpoint's | |
1416 | commands. */ | |
1417 | ||
1418 | void | |
1419 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1420 | { | |
1421 | int old_silent = b->silent; | |
1422 | ||
1423 | b->silent = silent; | |
1424 | if (old_silent != silent) | |
76727919 | 1425 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1426 | } |
1427 | ||
1428 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1429 | breakpoint work for any thread. */ | |
1430 | ||
1431 | void | |
1432 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1433 | { | |
1434 | int old_thread = b->thread; | |
1435 | ||
1436 | b->thread = thread; | |
1437 | if (old_thread != thread) | |
76727919 | 1438 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1439 | } |
1440 | ||
1441 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1442 | breakpoint work for any task. */ | |
1443 | ||
1444 | void | |
1445 | breakpoint_set_task (struct breakpoint *b, int task) | |
1446 | { | |
1447 | int old_task = b->task; | |
1448 | ||
1449 | b->task = task; | |
1450 | if (old_task != task) | |
76727919 | 1451 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1452 | } |
1453 | ||
95a42b64 | 1454 | static void |
896b6bda | 1455 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1456 | struct command_line *control) |
95a42b64 | 1457 | { |
d1b0a7bf | 1458 | counted_command_line cmd; |
999700cd PW |
1459 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1460 | NULL after the call to read_command_lines if the user provides an empty | |
1461 | list of command by just typing "end". */ | |
1462 | bool cmd_read = false; | |
95a42b64 | 1463 | |
896b6bda PA |
1464 | std::string new_arg; |
1465 | ||
95a42b64 TT |
1466 | if (arg == NULL || !*arg) |
1467 | { | |
da1df1db | 1468 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1469 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1470 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1471 | breakpoint_count); | |
95a42b64 | 1472 | else if (breakpoint_count > 0) |
896b6bda | 1473 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1474 | } |
da1df1db TBA |
1475 | else |
1476 | { | |
1477 | /* Create a copy of ARG. This is needed because the "commands" | |
1478 | command may be coming from a script. In that case, the read | |
1479 | line buffer is going to be overwritten in the lambda of | |
1480 | 'map_breakpoint_numbers' below when reading the next line | |
1481 | before we are are done parsing the breakpoint numbers. */ | |
1482 | new_arg = arg; | |
1483 | } | |
1484 | arg = new_arg.c_str (); | |
48649e1b TT |
1485 | |
1486 | map_breakpoint_numbers | |
1487 | (arg, [&] (breakpoint *b) | |
1488 | { | |
999700cd | 1489 | if (!cmd_read) |
48649e1b | 1490 | { |
999700cd | 1491 | gdb_assert (cmd == NULL); |
48649e1b | 1492 | if (control != NULL) |
12973681 | 1493 | cmd = control->body_list_0; |
48649e1b TT |
1494 | else |
1495 | { | |
81b1e71c TT |
1496 | std::string str |
1497 | = string_printf (_("Type commands for breakpoint(s) " | |
1498 | "%s, one per line."), | |
1499 | arg); | |
48649e1b | 1500 | |
60b3cef2 TT |
1501 | auto do_validate = [=] (const char *line) |
1502 | { | |
1503 | validate_actionline (line, b); | |
1504 | }; | |
1505 | gdb::function_view<void (const char *)> validator; | |
1506 | if (is_tracepoint (b)) | |
1507 | validator = do_validate; | |
1508 | ||
1509 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1510 | } |
999700cd | 1511 | cmd_read = true; |
48649e1b TT |
1512 | } |
1513 | ||
1514 | /* If a breakpoint was on the list more than once, we don't need to | |
1515 | do anything. */ | |
1516 | if (b->commands != cmd) | |
1517 | { | |
d1b0a7bf | 1518 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1519 | b->commands = cmd; |
76727919 | 1520 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1521 | } |
1522 | }); | |
95a42b64 TT |
1523 | } |
1524 | ||
1525 | static void | |
0b39b52e | 1526 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1527 | { |
1528 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1529 | } |
40c03ae8 EZ |
1530 | |
1531 | /* Like commands_command, but instead of reading the commands from | |
1532 | input stream, takes them from an already parsed command structure. | |
1533 | ||
1534 | This is used by cli-script.c to DTRT with breakpoint commands | |
1535 | that are part of if and while bodies. */ | |
1536 | enum command_control_type | |
896b6bda | 1537 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1538 | { |
95a42b64 TT |
1539 | commands_command_1 (arg, 0, cmd); |
1540 | return simple_control; | |
40c03ae8 | 1541 | } |
876fa593 JK |
1542 | |
1543 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1544 | ||
1545 | static int | |
1546 | bp_location_has_shadow (struct bp_location *bl) | |
1547 | { | |
1548 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1549 | return 0; | |
1550 | if (!bl->inserted) | |
1551 | return 0; | |
1552 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1553 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1554 | return 0; |
1555 | return 1; | |
1556 | } | |
1557 | ||
9d497a19 PA |
1558 | /* Update BUF, which is LEN bytes read from the target address |
1559 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1560 | contents. | |
1561 | ||
1562 | If READBUF is not NULL, this buffer must not overlap with the of | |
1563 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1564 | failed assertion internal error will be raised. */ | |
1565 | ||
1566 | static void | |
1567 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1568 | const gdb_byte *writebuf_org, | |
1569 | ULONGEST memaddr, LONGEST len, | |
1570 | struct bp_target_info *target_info, | |
1571 | struct gdbarch *gdbarch) | |
1572 | { | |
1573 | /* Now do full processing of the found relevant range of elements. */ | |
1574 | CORE_ADDR bp_addr = 0; | |
1575 | int bp_size = 0; | |
1576 | int bptoffset = 0; | |
1577 | ||
1578 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1579 | current_program_space->aspace, 0)) | |
1580 | { | |
1581 | /* The breakpoint is inserted in a different address space. */ | |
1582 | return; | |
1583 | } | |
1584 | ||
1585 | /* Addresses and length of the part of the breakpoint that | |
1586 | we need to copy. */ | |
1587 | bp_addr = target_info->placed_address; | |
1588 | bp_size = target_info->shadow_len; | |
1589 | ||
1590 | if (bp_addr + bp_size <= memaddr) | |
1591 | { | |
1592 | /* The breakpoint is entirely before the chunk of memory we are | |
1593 | reading. */ | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | if (bp_addr >= memaddr + len) | |
1598 | { | |
1599 | /* The breakpoint is entirely after the chunk of memory we are | |
1600 | reading. */ | |
1601 | return; | |
1602 | } | |
1603 | ||
1604 | /* Offset within shadow_contents. */ | |
1605 | if (bp_addr < memaddr) | |
1606 | { | |
1607 | /* Only copy the second part of the breakpoint. */ | |
1608 | bp_size -= memaddr - bp_addr; | |
1609 | bptoffset = memaddr - bp_addr; | |
1610 | bp_addr = memaddr; | |
1611 | } | |
1612 | ||
1613 | if (bp_addr + bp_size > memaddr + len) | |
1614 | { | |
1615 | /* Only copy the first part of the breakpoint. */ | |
1616 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1617 | } | |
1618 | ||
1619 | if (readbuf != NULL) | |
1620 | { | |
1621 | /* Verify that the readbuf buffer does not overlap with the | |
1622 | shadow_contents buffer. */ | |
1623 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1624 | || readbuf >= (target_info->shadow_contents | |
1625 | + target_info->shadow_len)); | |
1626 | ||
1627 | /* Update the read buffer with this inserted breakpoint's | |
1628 | shadow. */ | |
1629 | memcpy (readbuf + bp_addr - memaddr, | |
1630 | target_info->shadow_contents + bptoffset, bp_size); | |
1631 | } | |
1632 | else | |
1633 | { | |
1634 | const unsigned char *bp; | |
0d5ed153 MR |
1635 | CORE_ADDR addr = target_info->reqstd_address; |
1636 | int placed_size; | |
9d497a19 PA |
1637 | |
1638 | /* Update the shadow with what we want to write to memory. */ | |
1639 | memcpy (target_info->shadow_contents + bptoffset, | |
1640 | writebuf_org + bp_addr - memaddr, bp_size); | |
1641 | ||
1642 | /* Determine appropriate breakpoint contents and size for this | |
1643 | address. */ | |
0d5ed153 | 1644 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1645 | |
1646 | /* Update the final write buffer with this inserted | |
1647 | breakpoint's INSN. */ | |
1648 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1649 | } | |
1650 | } | |
1651 | ||
8defab1a | 1652 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1653 | by replacing any memory breakpoints with their shadowed contents. |
1654 | ||
35c63cd8 JB |
1655 | If READBUF is not NULL, this buffer must not overlap with any of |
1656 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1657 | a failed assertion internal error will be raised. | |
1658 | ||
876fa593 | 1659 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1660 | bl->address - bp_locations_placed_address_before_address_max |
1661 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1662 | The range we were requested to resolve shadows for is: |
1663 | memaddr ... memaddr + len | |
1664 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1665 | memaddr + len <= (bl->address |
f5336ca5 | 1666 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1667 | and: |
f5336ca5 | 1668 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1669 | |
8defab1a | 1670 | void |
f0ba3972 PA |
1671 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1672 | const gdb_byte *writebuf_org, | |
1673 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1674 | { |
4a64f543 MS |
1675 | /* Left boundary, right boundary and median element of our binary |
1676 | search. */ | |
876fa593 JK |
1677 | unsigned bc_l, bc_r, bc; |
1678 | ||
4a64f543 MS |
1679 | /* Find BC_L which is a leftmost element which may affect BUF |
1680 | content. It is safe to report lower value but a failure to | |
1681 | report higher one. */ | |
876fa593 JK |
1682 | |
1683 | bc_l = 0; | |
5d51cd5d | 1684 | bc_r = bp_locations.size (); |
876fa593 JK |
1685 | while (bc_l + 1 < bc_r) |
1686 | { | |
35df4500 | 1687 | struct bp_location *bl; |
876fa593 JK |
1688 | |
1689 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1690 | bl = bp_locations[bc]; |
876fa593 | 1691 | |
4a64f543 MS |
1692 | /* Check first BL->ADDRESS will not overflow due to the added |
1693 | constant. Then advance the left boundary only if we are sure | |
1694 | the BC element can in no way affect the BUF content (MEMADDR | |
1695 | to MEMADDR + LEN range). | |
876fa593 | 1696 | |
f5336ca5 | 1697 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1698 | offset so that we cannot miss a breakpoint with its shadow |
1699 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1700 | |
f5336ca5 | 1701 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1702 | >= bl->address) |
f5336ca5 | 1703 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1704 | <= memaddr)) |
876fa593 JK |
1705 | bc_l = bc; |
1706 | else | |
1707 | bc_r = bc; | |
1708 | } | |
1709 | ||
128070bb PA |
1710 | /* Due to the binary search above, we need to make sure we pick the |
1711 | first location that's at BC_L's address. E.g., if there are | |
1712 | multiple locations at the same address, BC_L may end up pointing | |
1713 | at a duplicate location, and miss the "master"/"inserted" | |
1714 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1715 | B: | |
1716 | ||
1717 | L1@A, L2@A, L3@B, ... | |
1718 | ||
1719 | BC_L could end up pointing at location L2, while the "master" | |
1720 | location could be L1. Since the `loc->inserted' flag is only set | |
1721 | on "master" locations, we'd forget to restore the shadow of L1 | |
1722 | and L2. */ | |
1723 | while (bc_l > 0 | |
f5336ca5 | 1724 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1725 | bc_l--; |
1726 | ||
876fa593 JK |
1727 | /* Now do full processing of the found relevant range of elements. */ |
1728 | ||
5d51cd5d | 1729 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1730 | { |
1731 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1732 | |
01add95b SM |
1733 | /* bp_location array has BL->OWNER always non-NULL. */ |
1734 | if (bl->owner->type == bp_none) | |
1735 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1736 | bl->owner->number); | |
ffce0d52 | 1737 | |
01add95b SM |
1738 | /* Performance optimization: any further element can no longer affect BUF |
1739 | content. */ | |
876fa593 | 1740 | |
01add95b SM |
1741 | if (bl->address >= bp_locations_placed_address_before_address_max |
1742 | && (memaddr + len | |
1743 | <= (bl->address | |
1744 | - bp_locations_placed_address_before_address_max))) | |
1745 | break; | |
876fa593 | 1746 | |
01add95b SM |
1747 | if (!bp_location_has_shadow (bl)) |
1748 | continue; | |
6c95b8df | 1749 | |
01add95b SM |
1750 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1751 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1752 | } | |
c906108c | 1753 | } |
9d497a19 | 1754 | |
f2478a7e | 1755 | /* See breakpoint.h. */ |
b775012e | 1756 | |
f2478a7e | 1757 | bool |
b775012e LM |
1758 | is_breakpoint (const struct breakpoint *bpt) |
1759 | { | |
1760 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1761 | || bpt->type == bp_hardware_breakpoint |
1762 | || bpt->type == bp_dprintf); | |
b775012e LM |
1763 | } |
1764 | ||
60e1c644 PA |
1765 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1766 | ||
f2478a7e | 1767 | static bool |
d77f58be | 1768 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1769 | { |
1770 | return (bpt->type == bp_hardware_watchpoint | |
1771 | || bpt->type == bp_read_watchpoint | |
1772 | || bpt->type == bp_access_watchpoint); | |
1773 | } | |
7270d8f2 | 1774 | |
f2478a7e | 1775 | /* See breakpoint.h. */ |
60e1c644 | 1776 | |
f2478a7e | 1777 | bool |
d77f58be | 1778 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1779 | { |
1780 | return (is_hardware_watchpoint (bpt) | |
1781 | || bpt->type == bp_watchpoint); | |
1782 | } | |
1783 | ||
3a5c3e22 PA |
1784 | /* Returns true if the current thread and its running state are safe |
1785 | to evaluate or update watchpoint B. Watchpoints on local | |
1786 | expressions need to be evaluated in the context of the thread that | |
1787 | was current when the watchpoint was created, and, that thread needs | |
1788 | to be stopped to be able to select the correct frame context. | |
1789 | Watchpoints on global expressions can be evaluated on any thread, | |
1790 | and in any state. It is presently left to the target allowing | |
1791 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1792 | |
1793 | static int | |
3a5c3e22 | 1794 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1795 | { |
c1fc2657 | 1796 | return (b->pspace == current_program_space |
d7e15655 TT |
1797 | && (b->watchpoint_thread == null_ptid |
1798 | || (inferior_ptid == b->watchpoint_thread | |
611841bb | 1799 | && !inferior_thread ()->executing ()))); |
f6bc2008 PA |
1800 | } |
1801 | ||
d0fb5eae JK |
1802 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1803 | associated bp_watchpoint_scope breakpoint. */ | |
1804 | ||
1805 | static void | |
3a5c3e22 | 1806 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1807 | { |
c1fc2657 | 1808 | if (w->related_breakpoint != w) |
d0fb5eae | 1809 | { |
c1fc2657 SM |
1810 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1811 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1812 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1813 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1814 | w->related_breakpoint = w; | |
d0fb5eae | 1815 | } |
c1fc2657 | 1816 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1817 | } |
1818 | ||
bb9d5f81 PP |
1819 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1820 | watchpoint W. */ | |
1821 | ||
1822 | static struct value * | |
1823 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1824 | { | |
1825 | struct value *bit_val; | |
1826 | ||
1827 | if (val == NULL) | |
1828 | return NULL; | |
1829 | ||
1830 | bit_val = allocate_value (value_type (val)); | |
1831 | ||
1832 | unpack_value_bitfield (bit_val, | |
1833 | w->val_bitpos, | |
1834 | w->val_bitsize, | |
50888e42 | 1835 | value_contents_for_printing (val).data (), |
bb9d5f81 PP |
1836 | value_offset (val), |
1837 | val); | |
1838 | ||
1839 | return bit_val; | |
1840 | } | |
1841 | ||
c6d81124 PA |
1842 | /* Allocate a dummy location and add it to B, which must be a software |
1843 | watchpoint. This is required because even if a software watchpoint | |
1844 | is not watching any memory, bpstat_stop_status requires a location | |
1845 | to be able to report stops. */ | |
1846 | ||
1847 | static void | |
1848 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1849 | struct program_space *pspace) | |
1850 | { | |
1851 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1852 | ||
ee89d0a4 | 1853 | b->loc = b->allocate_location (); |
c6d81124 PA |
1854 | b->loc->pspace = pspace; |
1855 | b->loc->address = -1; | |
1856 | b->loc->length = -1; | |
1857 | } | |
1858 | ||
1859 | /* Returns true if B is a software watchpoint that is not watching any | |
1860 | memory (e.g., "watch $pc"). */ | |
1861 | ||
f2478a7e | 1862 | static bool |
c6d81124 PA |
1863 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1864 | { | |
1865 | return (b->type == bp_watchpoint | |
1866 | && b->loc != NULL | |
1867 | && b->loc->next == NULL | |
1868 | && b->loc->address == -1 | |
1869 | && b->loc->length == -1); | |
1870 | } | |
1871 | ||
567e1b4e JB |
1872 | /* Assuming that B is a watchpoint: |
1873 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1874 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1875 | - Evaluate the condition if there is one, and store the result |
1876 | in b->loc->cond. | |
a5606eee VP |
1877 | - Update the list of values that must be watched in B->loc. |
1878 | ||
4a64f543 MS |
1879 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1880 | nothing. If this is local watchpoint that is out of scope, delete | |
1881 | it. | |
1882 | ||
1883 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1884 | removed + inserted on each stop here. Normal breakpoints must | |
1885 | never be removed because they might be missed by a running thread | |
1886 | when debugging in non-stop mode. On the other hand, hardware | |
1887 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1888 | to each LWP since they are stored in each LWP's hardware debug | |
1889 | registers. Therefore, such LWP must be stopped first in order to | |
1890 | be able to modify its hardware watchpoints. | |
1891 | ||
1892 | Hardware watchpoints must be reset exactly once after being | |
1893 | presented to the user. It cannot be done sooner, because it would | |
1894 | reset the data used to present the watchpoint hit to the user. And | |
1895 | it must not be done later because it could display the same single | |
1896 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1897 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1898 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1899 | not user-visible - its hit is suppressed if the memory content has | |
1900 | not changed. | |
1901 | ||
1902 | The following constraints influence the location where we can reset | |
1903 | hardware watchpoints: | |
1904 | ||
1905 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1906 | called several times when GDB stops. | |
1907 | ||
1908 | [linux] | |
1909 | * Multiple hardware watchpoints can be hit at the same time, | |
1910 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1911 | hit at a time as the reason for stopping, and all the other hits | |
1912 | are presented later, one after the other, each time the user | |
1913 | requests the execution to be resumed. Execution is not resumed | |
1914 | for the threads still having pending hit event stored in | |
1915 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1916 | the inferior on the first stop the thread hit event is kept being | |
1917 | reported from its cached value by linux_nat_stopped_data_address | |
1918 | until the real thread resume happens after the watchpoint gets | |
1919 | presented and thus its LWP_INFO->STATUS gets reset. | |
1920 | ||
1921 | Therefore the hardware watchpoint hit can get safely reset on the | |
1922 | watchpoint removal from inferior. */ | |
a79d3c27 | 1923 | |
b40ce68a | 1924 | static void |
3a5c3e22 | 1925 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1926 | { |
a5606eee | 1927 | int within_current_scope; |
a5606eee | 1928 | struct frame_id saved_frame_id; |
66076460 | 1929 | int frame_saved; |
a5606eee | 1930 | |
f6bc2008 PA |
1931 | /* If this is a local watchpoint, we only want to check if the |
1932 | watchpoint frame is in scope if the current thread is the thread | |
1933 | that was used to create the watchpoint. */ | |
1934 | if (!watchpoint_in_thread_scope (b)) | |
1935 | return; | |
1936 | ||
c1fc2657 | 1937 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1938 | return; |
1939 | ||
66076460 | 1940 | frame_saved = 0; |
a5606eee VP |
1941 | |
1942 | /* Determine if the watchpoint is within scope. */ | |
1943 | if (b->exp_valid_block == NULL) | |
1944 | within_current_scope = 1; | |
1945 | else | |
1946 | { | |
b5db5dfc UW |
1947 | struct frame_info *fi = get_current_frame (); |
1948 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1949 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1950 | ||
c9cf6e20 MG |
1951 | /* If we're at a point where the stack has been destroyed |
1952 | (e.g. in a function epilogue), unwinding may not work | |
1953 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1954 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1955 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1956 | return; |
66076460 DJ |
1957 | |
1958 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1959 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1960 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1961 | took a frame parameter, so that we didn't have to change the |
1962 | selected frame. */ | |
66076460 DJ |
1963 | frame_saved = 1; |
1964 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1965 | ||
a5606eee VP |
1966 | fi = frame_find_by_id (b->watchpoint_frame); |
1967 | within_current_scope = (fi != NULL); | |
1968 | if (within_current_scope) | |
1969 | select_frame (fi); | |
1970 | } | |
1971 | ||
b5db5dfc UW |
1972 | /* We don't free locations. They are stored in the bp_location array |
1973 | and update_global_location_list will eventually delete them and | |
1974 | remove breakpoints if needed. */ | |
c1fc2657 | 1975 | b->loc = NULL; |
b5db5dfc | 1976 | |
a5606eee VP |
1977 | if (within_current_scope && reparse) |
1978 | { | |
bbc13ae3 | 1979 | const char *s; |
d63d0675 | 1980 | |
4d01a485 | 1981 | b->exp.reset (); |
a4c50be3 TT |
1982 | s = (b->exp_string_reparse |
1983 | ? b->exp_string_reparse.get () | |
1984 | : b->exp_string.get ()); | |
1bb9788d | 1985 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1986 | /* If the meaning of expression itself changed, the old value is |
1987 | no longer relevant. We don't want to report a watchpoint hit | |
1988 | to the user when the old value and the new value may actually | |
1989 | be completely different objects. */ | |
fa4727a6 | 1990 | b->val = NULL; |
4c1d86d9 | 1991 | b->val_valid = false; |
60e1c644 PA |
1992 | |
1993 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1994 | expression is stored in the breakpoint object, not in the | |
1995 | locations (re)created below. */ | |
c1fc2657 | 1996 | if (b->cond_string != NULL) |
60e1c644 | 1997 | { |
4d01a485 | 1998 | b->cond_exp.reset (); |
60e1c644 | 1999 | |
6f781ee3 | 2000 | s = b->cond_string.get (); |
1bb9788d | 2001 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 2002 | } |
a5606eee | 2003 | } |
a5606eee VP |
2004 | |
2005 | /* If we failed to parse the expression, for example because | |
2006 | it refers to a global variable in a not-yet-loaded shared library, | |
2007 | don't try to insert watchpoint. We don't automatically delete | |
2008 | such watchpoint, though, since failure to parse expression | |
2009 | is different from out-of-scope watchpoint. */ | |
55f6301a | 2010 | if (!target_has_execution ()) |
2d134ed3 PA |
2011 | { |
2012 | /* Without execution, memory can't change. No use to try and | |
2013 | set watchpoint locations. The watchpoint will be reset when | |
2014 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
2015 | if (!can_use_hw_watchpoints) |
2016 | { | |
c47614fe | 2017 | if (b->works_in_software_mode ()) |
c1fc2657 | 2018 | b->type = bp_watchpoint; |
e8369a73 | 2019 | else |
638aa5a1 AB |
2020 | error (_("Can't set read/access watchpoint when " |
2021 | "hardware watchpoints are disabled.")); | |
e8369a73 | 2022 | } |
2d134ed3 PA |
2023 | } |
2024 | else if (within_current_scope && b->exp) | |
a5606eee | 2025 | { |
a6535de1 | 2026 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 2027 | struct value *v, *result; |
2d134ed3 | 2028 | struct program_space *frame_pspace; |
a5606eee | 2029 | |
1eaebe02 | 2030 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 2031 | &val_chain, false); |
a5606eee | 2032 | |
a5606eee VP |
2033 | /* Avoid setting b->val if it's already set. The meaning of |
2034 | b->val is 'the last value' user saw, and we should update | |
2035 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
2036 | happens, the code that reports it updates b->val directly. |
2037 | We don't keep track of the memory value for masked | |
2038 | watchpoints. */ | |
c1fc2657 | 2039 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 2040 | { |
bb9d5f81 | 2041 | if (b->val_bitsize != 0) |
850645cf TT |
2042 | v = extract_bitfield_from_watchpoint_value (b, v); |
2043 | b->val = release_value (v); | |
4c1d86d9 | 2044 | b->val_valid = true; |
fa4727a6 | 2045 | } |
a5606eee | 2046 | |
2d134ed3 PA |
2047 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
2048 | ||
a5606eee | 2049 | /* Look at each value on the value chain. */ |
a6535de1 TT |
2050 | gdb_assert (!val_chain.empty ()); |
2051 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 2052 | { |
a6535de1 TT |
2053 | v = iter.get (); |
2054 | ||
a5606eee VP |
2055 | /* If it's a memory location, and GDB actually needed |
2056 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
2057 | must watch it. If the first value returned is |
2058 | still lazy, that means an error occurred reading it; | |
2059 | watch it anyway in case it becomes readable. */ | |
a5606eee | 2060 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 2061 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
2062 | { |
2063 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 2064 | |
a5606eee VP |
2065 | /* We only watch structs and arrays if user asked |
2066 | for it explicitly, never if they just happen to | |
2067 | appear in the middle of some value chain. */ | |
fa4727a6 | 2068 | if (v == result |
78134374 SM |
2069 | || (vtype->code () != TYPE_CODE_STRUCT |
2070 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
2071 | { |
2072 | CORE_ADDR addr; | |
f486487f | 2073 | enum target_hw_bp_type type; |
a5606eee | 2074 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
2075 | int bitpos = 0, bitsize = 0; |
2076 | ||
2077 | if (value_bitsize (v) != 0) | |
2078 | { | |
2079 | /* Extract the bit parameters out from the bitfield | |
2080 | sub-expression. */ | |
2081 | bitpos = value_bitpos (v); | |
2082 | bitsize = value_bitsize (v); | |
2083 | } | |
2084 | else if (v == result && b->val_bitsize != 0) | |
2085 | { | |
2086 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
2087 | lvalue whose bit parameters are saved in the fields | |
2088 | VAL_BITPOS and VAL_BITSIZE. */ | |
2089 | bitpos = b->val_bitpos; | |
2090 | bitsize = b->val_bitsize; | |
2091 | } | |
a5606eee | 2092 | |
42ae5230 | 2093 | addr = value_address (v); |
bb9d5f81 PP |
2094 | if (bitsize != 0) |
2095 | { | |
2096 | /* Skip the bytes that don't contain the bitfield. */ | |
2097 | addr += bitpos / 8; | |
2098 | } | |
2099 | ||
a5606eee | 2100 | type = hw_write; |
c1fc2657 | 2101 | if (b->type == bp_read_watchpoint) |
a5606eee | 2102 | type = hw_read; |
c1fc2657 | 2103 | else if (b->type == bp_access_watchpoint) |
a5606eee | 2104 | type = hw_access; |
3a5c3e22 | 2105 | |
ee89d0a4 | 2106 | loc = b->allocate_location (); |
c1fc2657 | 2107 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
a5606eee VP |
2108 | ; |
2109 | *tmp = loc; | |
8ee511af | 2110 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
2111 | |
2112 | loc->pspace = frame_pspace; | |
f17d9474 | 2113 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
2114 | |
2115 | if (bitsize != 0) | |
2116 | { | |
2117 | /* Just cover the bytes that make up the bitfield. */ | |
2118 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2119 | } | |
2120 | else | |
2121 | loc->length = TYPE_LENGTH (value_type (v)); | |
2122 | ||
a5606eee VP |
2123 | loc->watchpoint_type = type; |
2124 | } | |
2125 | } | |
9fa40276 TJB |
2126 | } |
2127 | ||
2128 | /* Change the type of breakpoint between hardware assisted or | |
2129 | an ordinary watchpoint depending on the hardware support | |
2130 | and free hardware slots. REPARSE is set when the inferior | |
2131 | is started. */ | |
a9634178 | 2132 | if (reparse) |
9fa40276 | 2133 | { |
e09342b5 | 2134 | int reg_cnt; |
9fa40276 | 2135 | enum bp_loc_type loc_type; |
a5606eee | 2136 | |
a9634178 | 2137 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2138 | |
2139 | if (reg_cnt) | |
9fa40276 TJB |
2140 | { |
2141 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2142 | enum bptype type; |
9fa40276 | 2143 | |
a9634178 TJB |
2144 | /* Use an exact watchpoint when there's only one memory region to be |
2145 | watched, and only one debug register is needed to watch it. */ | |
2146 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2147 | ||
9fa40276 | 2148 | /* We need to determine how many resources are already |
e09342b5 TJB |
2149 | used for all other hardware watchpoints plus this one |
2150 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2151 | this watchpoint in as well. */ |
2152 | ||
2153 | /* If this is a software watchpoint, we try to turn it | |
2154 | to a hardware one -- count resources as if B was of | |
2155 | hardware watchpoint type. */ | |
c1fc2657 | 2156 | type = b->type; |
a1398e0c PA |
2157 | if (type == bp_watchpoint) |
2158 | type = bp_hardware_watchpoint; | |
2159 | ||
2160 | /* This watchpoint may or may not have been placed on | |
2161 | the list yet at this point (it won't be in the list | |
2162 | if we're trying to create it for the first time, | |
2163 | through watch_command), so always account for it | |
2164 | manually. */ | |
2165 | ||
2166 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2167 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2168 | |
2169 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2170 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2171 | |
2172 | target_resources_ok | |
2173 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2174 | if (target_resources_ok <= 0) |
a9634178 | 2175 | { |
5a61e176 | 2176 | bool sw_mode = b->works_in_software_mode (); |
9c06b0b4 TJB |
2177 | |
2178 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2179 | error (_("Target does not support this type of " |
2180 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2181 | else if (target_resources_ok < 0 && !sw_mode) |
2182 | error (_("There are not enough available hardware " | |
2183 | "resources for this watchpoint.")); | |
a1398e0c PA |
2184 | |
2185 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2186 | b->type = bp_watchpoint; |
a1398e0c PA |
2187 | } |
2188 | else | |
2189 | { | |
2190 | /* If this was a software watchpoint, we've just | |
2191 | found we have enough resources to turn it to a | |
2192 | hardware watchpoint. Otherwise, this is a | |
2193 | nop. */ | |
c1fc2657 | 2194 | b->type = type; |
a9634178 | 2195 | } |
9fa40276 | 2196 | } |
c47614fe | 2197 | else if (!b->works_in_software_mode ()) |
638aa5a1 AB |
2198 | { |
2199 | if (!can_use_hw_watchpoints) | |
2200 | error (_("Can't set read/access watchpoint when " | |
2201 | "hardware watchpoints are disabled.")); | |
2202 | else | |
2203 | error (_("Expression cannot be implemented with " | |
2204 | "read/access watchpoint.")); | |
2205 | } | |
9fa40276 | 2206 | else |
c1fc2657 | 2207 | b->type = bp_watchpoint; |
9fa40276 | 2208 | |
c1fc2657 | 2209 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2210 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2211 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2212 | bl->loc_type = loc_type; |
2213 | } | |
2214 | ||
c7437ca6 PA |
2215 | /* If a software watchpoint is not watching any memory, then the |
2216 | above left it without any location set up. But, | |
2217 | bpstat_stop_status requires a location to be able to report | |
2218 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2219 | if (b->type == bp_watchpoint && b->loc == NULL) |
2220 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2221 | } |
2222 | else if (!within_current_scope) | |
7270d8f2 | 2223 | { |
6cb06a8c | 2224 | gdb_printf (_("\ |
ac74f770 MS |
2225 | Watchpoint %d deleted because the program has left the block\n\ |
2226 | in which its expression is valid.\n"), | |
6cb06a8c | 2227 | b->number); |
d0fb5eae | 2228 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2229 | } |
a5606eee VP |
2230 | |
2231 | /* Restore the selected frame. */ | |
66076460 DJ |
2232 | if (frame_saved) |
2233 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2234 | } |
2235 | ||
a5606eee | 2236 | |
74960c60 | 2237 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2238 | inserted in the inferior. We don't differentiate the type of BL's owner |
2239 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2240 | breakpoint_ops is not defined, because in insert_bp_location, | |
2241 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2242 | static int |
35df4500 | 2243 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2244 | { |
35df4500 | 2245 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2246 | return 0; |
2247 | ||
35df4500 | 2248 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2249 | return 0; |
2250 | ||
b5fa468f TBA |
2251 | if (!bl->enabled || bl->disabled_by_cond |
2252 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2253 | return 0; |
2254 | ||
f8eba3c6 TT |
2255 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2256 | return 0; | |
2257 | ||
56710373 PA |
2258 | /* This is set for example, when we're attached to the parent of a |
2259 | vfork, and have detached from the child. The child is running | |
2260 | free, and we expect it to do an exec or exit, at which point the | |
2261 | OS makes the parent schedulable again (and the target reports | |
2262 | that the vfork is done). Until the child is done with the shared | |
2263 | memory region, do not insert breakpoints in the parent, otherwise | |
2264 | the child could still trip on the parent's breakpoints. Since | |
2265 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2266 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2267 | return 0; |
2268 | ||
31e77af2 | 2269 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2270 | location, except if the breakpoint is a single-step breakpoint, |
2271 | and the breakpoint's thread is the thread which is stepping past | |
2272 | a breakpoint. */ | |
31e77af2 PA |
2273 | if ((bl->loc_type == bp_loc_software_breakpoint |
2274 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2275 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2276 | bl->address) |
2277 | /* The single-step breakpoint may be inserted at the location | |
2278 | we're trying to step if the instruction branches to itself. | |
2279 | However, the instruction won't be executed at all and it may | |
2280 | break the semantics of the instruction, for example, the | |
2281 | instruction is a conditional branch or updates some flags. | |
2282 | We can't fix it unless GDB is able to emulate the instruction | |
2283 | or switch to displaced stepping. */ | |
2284 | && !(bl->owner->type == bp_single_step | |
2285 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2286 | { |
1eb8556f SM |
2287 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2288 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2289 | return 0; |
2290 | } | |
31e77af2 | 2291 | |
963f9c80 PA |
2292 | /* Don't insert watchpoints if we're trying to step past the |
2293 | instruction that triggered one. */ | |
2294 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2295 | && stepping_past_nonsteppable_watchpoint ()) | |
2296 | { | |
1eb8556f | 2297 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2298 | "skipping watchpoint at %s:%d", |
1eb8556f | 2299 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2300 | return 0; |
2301 | } | |
2302 | ||
74960c60 VP |
2303 | return 1; |
2304 | } | |
2305 | ||
934709f0 PW |
2306 | /* Same as should_be_inserted but does the check assuming |
2307 | that the location is not duplicated. */ | |
2308 | ||
2309 | static int | |
2310 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2311 | { | |
2312 | int result; | |
2313 | const int save_duplicate = bl->duplicate; | |
2314 | ||
2315 | bl->duplicate = 0; | |
2316 | result = should_be_inserted (bl); | |
2317 | bl->duplicate = save_duplicate; | |
2318 | return result; | |
2319 | } | |
2320 | ||
b775012e LM |
2321 | /* Parses a conditional described by an expression COND into an |
2322 | agent expression bytecode suitable for evaluation | |
2323 | by the bytecode interpreter. Return NULL if there was | |
2324 | any error during parsing. */ | |
2325 | ||
833177a4 | 2326 | static agent_expr_up |
b775012e LM |
2327 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2328 | { | |
833177a4 | 2329 | if (cond == NULL) |
b775012e LM |
2330 | return NULL; |
2331 | ||
833177a4 PA |
2332 | agent_expr_up aexpr; |
2333 | ||
b775012e LM |
2334 | /* We don't want to stop processing, so catch any errors |
2335 | that may show up. */ | |
a70b8144 | 2336 | try |
b775012e | 2337 | { |
036e657b | 2338 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2339 | } |
2340 | ||
230d2906 | 2341 | catch (const gdb_exception_error &ex) |
b775012e LM |
2342 | { |
2343 | /* If we got here, it means the condition could not be parsed to a valid | |
2344 | bytecode expression and thus can't be evaluated on the target's side. | |
2345 | It's no use iterating through the conditions. */ | |
b775012e LM |
2346 | } |
2347 | ||
2348 | /* We have a valid agent expression. */ | |
2349 | return aexpr; | |
2350 | } | |
2351 | ||
2352 | /* Based on location BL, create a list of breakpoint conditions to be | |
2353 | passed on to the target. If we have duplicated locations with different | |
2354 | conditions, we will add such conditions to the list. The idea is that the | |
2355 | target will evaluate the list of conditions and will only notify GDB when | |
2356 | one of them is true. */ | |
2357 | ||
2358 | static void | |
2359 | build_target_condition_list (struct bp_location *bl) | |
2360 | { | |
b775012e LM |
2361 | int null_condition_or_parse_error = 0; |
2362 | int modified = bl->needs_update; | |
b775012e | 2363 | |
8b4f3082 | 2364 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2365 | bl->target_info.conditions.clear (); |
8b4f3082 | 2366 | |
b775012e LM |
2367 | /* This is only meaningful if the target is |
2368 | evaluating conditions and if the user has | |
2369 | opted for condition evaluation on the target's | |
2370 | side. */ | |
2371 | if (gdb_evaluates_breakpoint_condition_p () | |
2372 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2373 | return; | |
2374 | ||
e0d9a270 SM |
2375 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2376 | ||
b775012e | 2377 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2378 | conditions or conditions that fail to parse to a valid agent |
2379 | expression bytecode. If any of these happen, then it's no use to | |
2380 | send conditions to the target since this location will always | |
2381 | trigger and generate a response back to GDB. Note we consider | |
2382 | all locations at the same address irrespective of type, i.e., | |
2383 | even if the locations aren't considered duplicates (e.g., | |
2384 | software breakpoint and hardware breakpoint at the same | |
2385 | address). */ | |
e0d9a270 | 2386 | for (bp_location *loc : loc_range) |
b775012e | 2387 | { |
b775012e LM |
2388 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2389 | { | |
2390 | if (modified) | |
2391 | { | |
b775012e LM |
2392 | /* Re-parse the conditions since something changed. In that |
2393 | case we already freed the condition bytecodes (see | |
2394 | force_breakpoint_reinsertion). We just | |
2395 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2396 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2397 | loc->cond.get ()); | |
b775012e LM |
2398 | } |
2399 | ||
2400 | /* If we have a NULL bytecode expression, it means something | |
2401 | went wrong or we have a null condition expression. */ | |
2402 | if (!loc->cond_bytecode) | |
2403 | { | |
2404 | null_condition_or_parse_error = 1; | |
2405 | break; | |
2406 | } | |
2407 | } | |
2408 | } | |
2409 | ||
2410 | /* If any of these happened, it means we will have to evaluate the conditions | |
2411 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2412 | for all the other duplicate locations, thus we free all of them here. | |
2413 | ||
2414 | This is so we have a finer control over which locations' conditions are | |
2415 | being evaluated by GDB or the remote stub. */ | |
2416 | if (null_condition_or_parse_error) | |
2417 | { | |
e0d9a270 | 2418 | for (bp_location *loc : loc_range) |
b775012e | 2419 | { |
b775012e LM |
2420 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2421 | { | |
2422 | /* Only go as far as the first NULL bytecode is | |
2423 | located. */ | |
2424 | if (!loc->cond_bytecode) | |
2425 | return; | |
2426 | ||
833177a4 | 2427 | loc->cond_bytecode.reset (); |
b775012e LM |
2428 | } |
2429 | } | |
2430 | } | |
2431 | ||
7f32a4d5 PA |
2432 | /* No NULL conditions or failed bytecode generation. Build a |
2433 | condition list for this location's address. If we have software | |
2434 | and hardware locations at the same address, they aren't | |
2435 | considered duplicates, but we still marge all the conditions | |
2436 | anyway, as it's simpler, and doesn't really make a practical | |
2437 | difference. */ | |
e0d9a270 SM |
2438 | for (bp_location *loc : loc_range) |
2439 | if (loc->cond | |
2440 | && is_breakpoint (loc->owner) | |
2441 | && loc->pspace->num == bl->pspace->num | |
2442 | && loc->owner->enable_state == bp_enabled | |
2443 | && loc->enabled | |
2444 | && !loc->disabled_by_cond) | |
2445 | { | |
2446 | /* Add the condition to the vector. This will be used later | |
2447 | to send the conditions to the target. */ | |
2448 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2449 | } | |
b775012e LM |
2450 | |
2451 | return; | |
2452 | } | |
2453 | ||
d3ce09f5 SS |
2454 | /* Parses a command described by string CMD into an agent expression |
2455 | bytecode suitable for evaluation by the bytecode interpreter. | |
2456 | Return NULL if there was any error during parsing. */ | |
2457 | ||
833177a4 | 2458 | static agent_expr_up |
d3ce09f5 SS |
2459 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2460 | { | |
bbc13ae3 KS |
2461 | const char *cmdrest; |
2462 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2463 | struct gdbarch *gdbarch = get_current_arch (); |
2464 | ||
833177a4 | 2465 | if (cmd == NULL) |
d3ce09f5 SS |
2466 | return NULL; |
2467 | ||
2468 | cmdrest = cmd; | |
2469 | ||
2470 | if (*cmdrest == ',') | |
2471 | ++cmdrest; | |
f1735a53 | 2472 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2473 | |
2474 | if (*cmdrest++ != '"') | |
2475 | error (_("No format string following the location")); | |
2476 | ||
2477 | format_start = cmdrest; | |
2478 | ||
8e481c3b | 2479 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2480 | |
2481 | format_end = cmdrest; | |
2482 | ||
2483 | if (*cmdrest++ != '"') | |
2484 | error (_("Bad format string, non-terminated '\"'.")); | |
2485 | ||
f1735a53 | 2486 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2487 | |
2488 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2489 | error (_("Invalid argument syntax")); | |
2490 | ||
2491 | if (*cmdrest == ',') | |
2492 | cmdrest++; | |
f1735a53 | 2493 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2494 | |
2495 | /* For each argument, make an expression. */ | |
2496 | ||
8e481c3b | 2497 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2498 | while (*cmdrest != '\0') |
2499 | { | |
bbc13ae3 | 2500 | const char *cmd1; |
d3ce09f5 SS |
2501 | |
2502 | cmd1 = cmdrest; | |
4d01a485 | 2503 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2504 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2505 | cmdrest = cmd1; |
2506 | if (*cmdrest == ',') | |
2507 | ++cmdrest; | |
2508 | } | |
2509 | ||
833177a4 PA |
2510 | agent_expr_up aexpr; |
2511 | ||
d3ce09f5 SS |
2512 | /* We don't want to stop processing, so catch any errors |
2513 | that may show up. */ | |
a70b8144 | 2514 | try |
d3ce09f5 | 2515 | { |
036e657b JB |
2516 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2517 | format_start, format_end - format_start, | |
8e481c3b | 2518 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2519 | } |
230d2906 | 2520 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2521 | { |
2522 | /* If we got here, it means the command could not be parsed to a valid | |
2523 | bytecode expression and thus can't be evaluated on the target's side. | |
2524 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2525 | } |
492d29ea | 2526 | |
d3ce09f5 SS |
2527 | /* We have a valid agent expression, return it. */ |
2528 | return aexpr; | |
2529 | } | |
2530 | ||
2531 | /* Based on location BL, create a list of breakpoint commands to be | |
2532 | passed on to the target. If we have duplicated locations with | |
2533 | different commands, we will add any such to the list. */ | |
2534 | ||
2535 | static void | |
2536 | build_target_command_list (struct bp_location *bl) | |
2537 | { | |
d3ce09f5 SS |
2538 | int null_command_or_parse_error = 0; |
2539 | int modified = bl->needs_update; | |
d3ce09f5 | 2540 | |
3cde5c42 PA |
2541 | /* Clear commands left over from a previous insert. */ |
2542 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2543 | |
41fac0cf | 2544 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2545 | return; |
2546 | ||
41fac0cf PA |
2547 | /* For now, limit to agent-style dprintf breakpoints. */ |
2548 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2549 | return; |
2550 | ||
e0d9a270 SM |
2551 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2552 | ||
7f32a4d5 PA |
2553 | /* For now, if we have any location at the same address that isn't a |
2554 | dprintf, don't install the target-side commands, as that would | |
2555 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2556 | control. */ |
e0d9a270 SM |
2557 | for (bp_location *loc : loc_range) |
2558 | if (is_breakpoint (loc->owner) | |
2559 | && loc->pspace->num == bl->pspace->num | |
2560 | && loc->owner->type != bp_dprintf) | |
2561 | return; | |
41fac0cf | 2562 | |
d3ce09f5 SS |
2563 | /* Do a first pass to check for locations with no assigned |
2564 | conditions or conditions that fail to parse to a valid agent expression | |
2565 | bytecode. If any of these happen, then it's no use to send conditions | |
2566 | to the target since this location will always trigger and generate a | |
2567 | response back to GDB. */ | |
e0d9a270 | 2568 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2569 | { |
d3ce09f5 SS |
2570 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2571 | { | |
2572 | if (modified) | |
2573 | { | |
d3ce09f5 SS |
2574 | /* Re-parse the commands since something changed. In that |
2575 | case we already freed the command bytecodes (see | |
2576 | force_breakpoint_reinsertion). We just | |
2577 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2578 | loc->cmd_bytecode |
2579 | = parse_cmd_to_aexpr (bl->address, | |
6f781ee3 | 2580 | loc->owner->extra_string.get ()); |
d3ce09f5 SS |
2581 | } |
2582 | ||
2583 | /* If we have a NULL bytecode expression, it means something | |
2584 | went wrong or we have a null command expression. */ | |
2585 | if (!loc->cmd_bytecode) | |
2586 | { | |
2587 | null_command_or_parse_error = 1; | |
2588 | break; | |
2589 | } | |
2590 | } | |
2591 | } | |
2592 | ||
2593 | /* If anything failed, then we're not doing target-side commands, | |
2594 | and so clean up. */ | |
2595 | if (null_command_or_parse_error) | |
2596 | { | |
e0d9a270 SM |
2597 | for (bp_location *loc : loc_range) |
2598 | if (is_breakpoint (loc->owner) | |
2599 | && loc->pspace->num == bl->pspace->num) | |
2600 | { | |
2601 | /* Only go as far as the first NULL bytecode is | |
2602 | located. */ | |
2603 | if (loc->cmd_bytecode == NULL) | |
2604 | return; | |
d3ce09f5 | 2605 | |
e0d9a270 SM |
2606 | loc->cmd_bytecode.reset (); |
2607 | } | |
d3ce09f5 SS |
2608 | } |
2609 | ||
7f32a4d5 PA |
2610 | /* No NULL commands or failed bytecode generation. Build a command |
2611 | list for all duplicate locations at this location's address. | |
2612 | Note that here we must care for whether the breakpoint location | |
2613 | types are considered duplicates, otherwise, say, if we have a | |
2614 | software and hardware location at the same address, the target | |
2615 | could end up running the commands twice. For the moment, we only | |
2616 | support targets-side commands with dprintf, but it doesn't hurt | |
2617 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2618 | for (bp_location *loc : loc_range) |
2619 | if (breakpoint_locations_match (bl, loc) | |
2620 | && loc->owner->extra_string | |
2621 | && is_breakpoint (loc->owner) | |
2622 | && loc->pspace->num == bl->pspace->num | |
2623 | && loc->owner->enable_state == bp_enabled | |
2624 | && loc->enabled | |
2625 | && !loc->disabled_by_cond) | |
2626 | { | |
2627 | /* Add the command to the vector. This will be used later | |
2628 | to send the commands to the target. */ | |
2629 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2630 | } | |
d3ce09f5 SS |
2631 | |
2632 | bl->target_info.persist = 0; | |
2633 | /* Maybe flag this location as persistent. */ | |
2634 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2635 | bl->target_info.persist = 1; | |
2636 | } | |
2637 | ||
833b7ab5 YQ |
2638 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2639 | of breakpoint according to ADDR except single-step breakpoint. | |
2640 | Get the kind of single-step breakpoint according to the current | |
2641 | registers state. */ | |
cd6c3b4f YQ |
2642 | |
2643 | static int | |
2644 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2645 | { | |
833b7ab5 YQ |
2646 | if (bl->owner->type == bp_single_step) |
2647 | { | |
2648 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2649 | struct regcache *regcache; | |
2650 | ||
00431a78 | 2651 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2652 | |
2653 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2654 | regcache, addr); | |
2655 | } | |
2656 | else | |
2657 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2658 | } |
2659 | ||
35df4500 TJB |
2660 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2661 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2662 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2663 | Returns 0 for success, 1 if the bp_location type is not supported or |
2664 | -1 for failure. | |
879bfdc2 | 2665 | |
4a64f543 MS |
2666 | NOTE drow/2003-09-09: This routine could be broken down to an |
2667 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2668 | static int |
35df4500 | 2669 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2670 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2671 | int *disabled_breaks, |
dd61ec5c MW |
2672 | int *hw_breakpoint_error, |
2673 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2674 | { |
cc06b668 | 2675 | gdb_exception bp_excpt; |
879bfdc2 | 2676 | |
b775012e | 2677 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2678 | return 0; |
2679 | ||
35c63cd8 JB |
2680 | /* Note we don't initialize bl->target_info, as that wipes out |
2681 | the breakpoint location's shadow_contents if the breakpoint | |
2682 | is still inserted at that location. This in turn breaks | |
2683 | target_read_memory which depends on these buffers when | |
2684 | a memory read is requested at the breakpoint location: | |
2685 | Once the target_info has been wiped, we fail to see that | |
2686 | we have a breakpoint inserted at that address and thus | |
2687 | read the breakpoint instead of returning the data saved in | |
2688 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2689 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2690 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2691 | bl->target_info.length = bl->length; |
8181d85f | 2692 | |
b775012e LM |
2693 | /* When working with target-side conditions, we must pass all the conditions |
2694 | for the same breakpoint address down to the target since GDB will not | |
2695 | insert those locations. With a list of breakpoint conditions, the target | |
2696 | can decide when to stop and notify GDB. */ | |
2697 | ||
2698 | if (is_breakpoint (bl->owner)) | |
2699 | { | |
2700 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2701 | build_target_command_list (bl); |
2702 | /* Reset the modification marker. */ | |
b775012e LM |
2703 | bl->needs_update = 0; |
2704 | } | |
2705 | ||
7f32a4d5 PA |
2706 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2707 | set at a read-only address, then a breakpoint location will have | |
2708 | been changed to hardware breakpoint before we get here. If it is | |
2709 | "off" however, error out before actually trying to insert the | |
2710 | breakpoint, with a nicer error message. */ | |
35df4500 | 2711 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2712 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2713 | { |
7f32a4d5 | 2714 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2715 | |
7f32a4d5 PA |
2716 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2717 | { | |
6cb06a8c TT |
2718 | gdb_printf (tmp_error_stream, |
2719 | _("Cannot insert breakpoint %d.\n" | |
2720 | "Cannot set software breakpoint " | |
2721 | "at read-only address %s\n"), | |
2722 | bl->owner->number, | |
2723 | paddress (bl->gdbarch, bl->address)); | |
7f32a4d5 | 2724 | return 1; |
765dc015 | 2725 | } |
7f32a4d5 PA |
2726 | } |
2727 | ||
2728 | if (bl->loc_type == bp_loc_software_breakpoint | |
2729 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2730 | { | |
879bfdc2 DJ |
2731 | /* First check to see if we have to handle an overlay. */ |
2732 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2733 | || bl->section == NULL |
2734 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2735 | { |
2736 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2737 | try |
dd61ec5c | 2738 | { |
0000e5cc PA |
2739 | int val; |
2740 | ||
c47614fe | 2741 | val = bl->owner->insert_location (bl); |
0000e5cc | 2742 | if (val) |
688fca4f | 2743 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2744 | } |
94aeb44b | 2745 | catch (gdb_exception &e) |
dd61ec5c | 2746 | { |
94aeb44b | 2747 | bp_excpt = std::move (e); |
dd61ec5c | 2748 | } |
879bfdc2 DJ |
2749 | } |
2750 | else | |
2751 | { | |
4a64f543 | 2752 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2753 | Shall we set a breakpoint at the LMA? */ |
2754 | if (!overlay_events_enabled) | |
2755 | { | |
2756 | /* Yes -- overlay event support is not active, | |
2757 | so we must try to set a breakpoint at the LMA. | |
2758 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2759 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2760 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2761 | bl->owner->number); |
879bfdc2 DJ |
2762 | else |
2763 | { | |
35df4500 TJB |
2764 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2765 | bl->section); | |
879bfdc2 | 2766 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2767 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2768 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2769 | |
2770 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2771 | try |
0000e5cc PA |
2772 | { |
2773 | int val; | |
2774 | ||
579c6ad9 | 2775 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2776 | = breakpoint_kind (bl, &addr); |
2777 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2778 | val = target_insert_breakpoint (bl->gdbarch, |
2779 | &bl->overlay_target_info); | |
2780 | if (val) | |
688fca4f PA |
2781 | bp_excpt |
2782 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2783 | } |
94aeb44b | 2784 | catch (gdb_exception &e) |
0000e5cc | 2785 | { |
94aeb44b | 2786 | bp_excpt = std::move (e); |
0000e5cc PA |
2787 | } |
2788 | ||
688fca4f | 2789 | if (bp_excpt.reason != 0) |
6cb06a8c TT |
2790 | gdb_printf (tmp_error_stream, |
2791 | "Overlay breakpoint %d " | |
2792 | "failed: in ROM?\n", | |
2793 | bl->owner->number); | |
879bfdc2 DJ |
2794 | } |
2795 | } | |
2796 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2797 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2798 | { |
2799 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2800 | try |
dda83cd7 | 2801 | { |
0000e5cc PA |
2802 | int val; |
2803 | ||
c47614fe | 2804 | val = bl->owner->insert_location (bl); |
0000e5cc | 2805 | if (val) |
688fca4f | 2806 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2807 | } |
94aeb44b | 2808 | catch (gdb_exception &e) |
dda83cd7 | 2809 | { |
94aeb44b | 2810 | bp_excpt = std::move (e); |
dda83cd7 | 2811 | } |
879bfdc2 DJ |
2812 | } |
2813 | else | |
2814 | { | |
2815 | /* No. This breakpoint will not be inserted. | |
2816 | No error, but do not mark the bp as 'inserted'. */ | |
2817 | return 0; | |
2818 | } | |
2819 | } | |
2820 | ||
688fca4f | 2821 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2822 | { |
2823 | /* Can't set the breakpoint. */ | |
0000e5cc | 2824 | |
80dc83fd AB |
2825 | /* If the target has closed then it will have deleted any |
2826 | breakpoints inserted within the target inferior, as a result | |
2827 | any further attempts to interact with the breakpoint objects | |
2828 | is not possible. Just rethrow the error. */ | |
2829 | if (bp_excpt.error == TARGET_CLOSE_ERROR) | |
2830 | throw bp_excpt; | |
2831 | gdb_assert (bl->owner != nullptr); | |
2832 | ||
0000e5cc PA |
2833 | /* In some cases, we might not be able to insert a |
2834 | breakpoint in a shared library that has already been | |
2835 | removed, but we have not yet processed the shlib unload | |
2836 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2837 | breakpoint insertion themselves can't tell why the |
2838 | breakpoint insertion failed (e.g., the remote target | |
2839 | doesn't define error codes), so we must treat generic | |
2840 | errors as memory errors. */ | |
688fca4f PA |
2841 | if (bp_excpt.reason == RETURN_ERROR |
2842 | && (bp_excpt.error == GENERIC_ERROR | |
2843 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2844 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2845 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2846 | || shared_objfile_contains_address_p (bl->pspace, |
2847 | bl->address))) | |
879bfdc2 | 2848 | { |
4a64f543 | 2849 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2850 | bl->shlib_disabled = 1; |
76727919 | 2851 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2852 | if (!*disabled_breaks) |
2853 | { | |
6cb06a8c TT |
2854 | gdb_printf (tmp_error_stream, |
2855 | "Cannot insert breakpoint %d.\n", | |
2856 | bl->owner->number); | |
2857 | gdb_printf (tmp_error_stream, | |
2858 | "Temporarily disabling shared " | |
2859 | "library breakpoints:\n"); | |
3fbb6ffa TJB |
2860 | } |
2861 | *disabled_breaks = 1; | |
6cb06a8c TT |
2862 | gdb_printf (tmp_error_stream, |
2863 | "breakpoint #%d\n", bl->owner->number); | |
0000e5cc | 2864 | return 0; |
879bfdc2 DJ |
2865 | } |
2866 | else | |
879bfdc2 | 2867 | { |
35df4500 | 2868 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2869 | { |
0000e5cc | 2870 | *hw_breakpoint_error = 1; |
688fca4f | 2871 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
6cb06a8c TT |
2872 | gdb_printf (tmp_error_stream, |
2873 | "Cannot insert hardware breakpoint %d%s", | |
2874 | bl->owner->number, | |
2875 | bp_excpt.message ? ":" : ".\n"); | |
dda83cd7 | 2876 | if (bp_excpt.message != NULL) |
6cb06a8c TT |
2877 | gdb_printf (tmp_error_stream, "%s.\n", |
2878 | bp_excpt.what ()); | |
879bfdc2 DJ |
2879 | } |
2880 | else | |
2881 | { | |
688fca4f | 2882 | if (bp_excpt.message == NULL) |
0000e5cc | 2883 | { |
1ccbe998 | 2884 | std::string message |
0000e5cc PA |
2885 | = memory_error_message (TARGET_XFER_E_IO, |
2886 | bl->gdbarch, bl->address); | |
0000e5cc | 2887 | |
6cb06a8c TT |
2888 | gdb_printf (tmp_error_stream, |
2889 | "Cannot insert breakpoint %d.\n" | |
2890 | "%s\n", | |
2891 | bl->owner->number, message.c_str ()); | |
0000e5cc PA |
2892 | } |
2893 | else | |
2894 | { | |
6cb06a8c TT |
2895 | gdb_printf (tmp_error_stream, |
2896 | "Cannot insert breakpoint %d: %s\n", | |
2897 | bl->owner->number, | |
2898 | bp_excpt.what ()); | |
0000e5cc | 2899 | } |
879bfdc2 | 2900 | } |
0000e5cc | 2901 | return 1; |
879bfdc2 DJ |
2902 | |
2903 | } | |
2904 | } | |
2905 | else | |
35df4500 | 2906 | bl->inserted = 1; |
879bfdc2 | 2907 | |
0000e5cc | 2908 | return 0; |
879bfdc2 DJ |
2909 | } |
2910 | ||
35df4500 | 2911 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2912 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2913 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2914 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2915 | { |
0000e5cc PA |
2916 | int val; |
2917 | ||
c47614fe | 2918 | val = bl->owner->insert_location (bl); |
85d721b8 PA |
2919 | |
2920 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2921 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2922 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2923 | { |
85d721b8 PA |
2924 | /* But don't try to insert it, if there's already another |
2925 | hw_access location that would be considered a duplicate | |
2926 | of this one. */ | |
48d7020b | 2927 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2928 | if (loc != bl |
85d721b8 | 2929 | && loc->watchpoint_type == hw_access |
35df4500 | 2930 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2931 | { |
35df4500 TJB |
2932 | bl->duplicate = 1; |
2933 | bl->inserted = 1; | |
2934 | bl->target_info = loc->target_info; | |
2935 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2936 | val = 0; |
2937 | break; | |
2938 | } | |
2939 | ||
2940 | if (val == 1) | |
2941 | { | |
77b06cd7 | 2942 | bl->watchpoint_type = hw_access; |
c47614fe | 2943 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2944 | |
2945 | if (val) | |
2946 | /* Back to the original value. */ | |
2947 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2948 | } |
2949 | } | |
2950 | ||
35df4500 | 2951 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2952 | } |
2953 | ||
35df4500 | 2954 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2955 | { |
0000e5cc PA |
2956 | int val; |
2957 | ||
c47614fe | 2958 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2959 | if (val) |
2960 | { | |
2961 | bl->owner->enable_state = bp_disabled; | |
2962 | ||
2963 | if (val == 1) | |
2964 | warning (_("\ | |
2965 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2966 | of catchpoint."), bl->owner->number); | |
2967 | else | |
2968 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2969 | } | |
2970 | ||
2971 | bl->inserted = (val == 0); | |
1640b821 DJ |
2972 | |
2973 | /* We've already printed an error message if there was a problem | |
2974 | inserting this catchpoint, and we've disabled the catchpoint, | |
2975 | so just return success. */ | |
2976 | return 0; | |
879bfdc2 DJ |
2977 | } |
2978 | ||
2979 | return 0; | |
2980 | } | |
2981 | ||
6c95b8df PA |
2982 | /* This function is called when program space PSPACE is about to be |
2983 | deleted. It takes care of updating breakpoints to not reference | |
2984 | PSPACE anymore. */ | |
2985 | ||
2986 | void | |
2987 | breakpoint_program_space_exit (struct program_space *pspace) | |
2988 | { | |
6c95b8df | 2989 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2990 | for (breakpoint *b : all_breakpoints_safe ()) |
2991 | if (b->pspace == pspace) | |
2992 | delete_breakpoint (b); | |
6c95b8df PA |
2993 | |
2994 | /* Breakpoints set through other program spaces could have locations | |
2995 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2996 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2997 | { |
2998 | struct bp_location *tmp; | |
2999 | ||
3000 | if (loc->pspace == pspace) | |
3001 | { | |
2bdf28a0 | 3002 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
3003 | if (loc->owner->loc == loc) |
3004 | loc->owner->loc = loc->next; | |
3005 | else | |
3006 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
3007 | if (tmp->next == loc) | |
3008 | { | |
3009 | tmp->next = loc->next; | |
3010 | break; | |
3011 | } | |
3012 | } | |
3013 | } | |
3014 | ||
3015 | /* Now update the global location list to permanently delete the | |
3016 | removed locations above. */ | |
44702360 | 3017 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
3018 | } |
3019 | ||
74960c60 VP |
3020 | /* Make sure all breakpoints are inserted in inferior. |
3021 | Throws exception on any error. | |
3022 | A breakpoint that is already inserted won't be inserted | |
3023 | again, so calling this function twice is safe. */ | |
3024 | void | |
3025 | insert_breakpoints (void) | |
3026 | { | |
43892fdf | 3027 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 3028 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
3029 | { |
3030 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3031 | ||
3032 | update_watchpoint (w, 0 /* don't reparse. */); | |
3033 | } | |
74960c60 | 3034 | |
04086b45 PA |
3035 | /* Updating watchpoints creates new locations, so update the global |
3036 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
3037 | ignore breakpoints_always_inserted_mode. Also, |
3038 | update_global_location_list tries to "upgrade" software | |
3039 | breakpoints to hardware breakpoints to handle "set breakpoint | |
3040 | auto-hw", so we need to call it even if we don't have new | |
3041 | locations. */ | |
04086b45 | 3042 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
3043 | } |
3044 | ||
b775012e LM |
3045 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3046 | target. It is the case with deleting and disabling of breakpoints when using | |
3047 | always-inserted mode. */ | |
3048 | ||
3049 | static void | |
3050 | update_inserted_breakpoint_locations (void) | |
3051 | { | |
b775012e LM |
3052 | int error_flag = 0; |
3053 | int val = 0; | |
3054 | int disabled_breaks = 0; | |
3055 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3056 | int hw_bp_details_reported = 0; |
b775012e | 3057 | |
d7e74731 | 3058 | string_file tmp_error_stream; |
b775012e LM |
3059 | |
3060 | /* Explicitly mark the warning -- this will only be printed if | |
3061 | there was an error. */ | |
d7e74731 | 3062 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 3063 | |
5ed8105e | 3064 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 3065 | |
48d7020b | 3066 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
3067 | { |
3068 | /* We only want to update software breakpoints and hardware | |
3069 | breakpoints. */ | |
3070 | if (!is_breakpoint (bl->owner)) | |
3071 | continue; | |
3072 | ||
3073 | /* We only want to update locations that are already inserted | |
3074 | and need updating. This is to avoid unwanted insertion during | |
3075 | deletion of breakpoints. */ | |
4daf1902 | 3076 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
3077 | continue; |
3078 | ||
3079 | switch_to_program_space_and_thread (bl->pspace); | |
3080 | ||
3081 | /* For targets that support global breakpoints, there's no need | |
3082 | to select an inferior to insert breakpoint to. In fact, even | |
3083 | if we aren't attached to any process yet, we should still | |
3084 | insert breakpoints. */ | |
f5656ead | 3085 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3086 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
3087 | continue; |
3088 | ||
d7e74731 | 3089 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3090 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3091 | if (val) |
3092 | error_flag = val; | |
3093 | } | |
3094 | ||
3095 | if (error_flag) | |
3096 | { | |
223ffa71 | 3097 | target_terminal::ours_for_output (); |
b775012e LM |
3098 | error_stream (tmp_error_stream); |
3099 | } | |
b775012e LM |
3100 | } |
3101 | ||
c30eee59 | 3102 | /* Used when starting or continuing the program. */ |
c906108c | 3103 | |
74960c60 VP |
3104 | static void |
3105 | insert_breakpoint_locations (void) | |
c906108c | 3106 | { |
eacd795a | 3107 | int error_flag = 0; |
c906108c | 3108 | int val = 0; |
3fbb6ffa | 3109 | int disabled_breaks = 0; |
81d0cc19 | 3110 | int hw_breakpoint_error = 0; |
dd61ec5c | 3111 | int hw_bp_error_explained_already = 0; |
c906108c | 3112 | |
d7e74731 PA |
3113 | string_file tmp_error_stream; |
3114 | ||
81d0cc19 GS |
3115 | /* Explicitly mark the warning -- this will only be printed if |
3116 | there was an error. */ | |
d7e74731 | 3117 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3118 | |
5ed8105e | 3119 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3120 | |
48d7020b | 3121 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3122 | { |
b775012e | 3123 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3124 | continue; |
3125 | ||
4a64f543 MS |
3126 | /* There is no point inserting thread-specific breakpoints if |
3127 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3128 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3129 | if (bl->owner->thread != -1 |
5d5658a1 | 3130 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3131 | continue; |
3132 | ||
35df4500 | 3133 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3134 | |
3135 | /* For targets that support global breakpoints, there's no need | |
3136 | to select an inferior to insert breakpoint to. In fact, even | |
3137 | if we aren't attached to any process yet, we should still | |
3138 | insert breakpoints. */ | |
f5656ead | 3139 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3140 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3141 | continue; |
3142 | ||
d7e74731 | 3143 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3144 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3145 | if (val) |
eacd795a | 3146 | error_flag = val; |
879bfdc2 | 3147 | } |
c906108c | 3148 | |
4a64f543 MS |
3149 | /* If we failed to insert all locations of a watchpoint, remove |
3150 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3151 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3152 | { |
3153 | int some_failed = 0; | |
a5606eee VP |
3154 | |
3155 | if (!is_hardware_watchpoint (bpt)) | |
3156 | continue; | |
3157 | ||
d6b74ac4 | 3158 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3159 | continue; |
74960c60 VP |
3160 | |
3161 | if (bpt->disposition == disp_del_at_next_stop) | |
3162 | continue; | |
a5606eee | 3163 | |
40cb8ca5 | 3164 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3165 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3166 | { |
3167 | some_failed = 1; | |
3168 | break; | |
3169 | } | |
40cb8ca5 | 3170 | |
a5606eee VP |
3171 | if (some_failed) |
3172 | { | |
40cb8ca5 | 3173 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3174 | if (loc->inserted) |
834c0d03 | 3175 | remove_breakpoint (loc); |
a5606eee VP |
3176 | |
3177 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3178 | tmp_error_stream.printf ("Could not insert " |
3179 | "hardware watchpoint %d.\n", | |
3180 | bpt->number); | |
eacd795a | 3181 | error_flag = -1; |
a5606eee VP |
3182 | } |
3183 | } | |
3184 | ||
eacd795a | 3185 | if (error_flag) |
81d0cc19 GS |
3186 | { |
3187 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3188 | message about possibly exhausted resources. */ |
dd61ec5c | 3189 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3190 | { |
d7e74731 | 3191 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3192 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3193 | } |
223ffa71 | 3194 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3195 | error_stream (tmp_error_stream); |
3196 | } | |
c906108c SS |
3197 | } |
3198 | ||
c30eee59 TJB |
3199 | /* Used when the program stops. |
3200 | Returns zero if successful, or non-zero if there was a problem | |
3201 | removing a breakpoint location. */ | |
3202 | ||
c906108c | 3203 | int |
fba45db2 | 3204 | remove_breakpoints (void) |
c906108c | 3205 | { |
3a1bae8e | 3206 | int val = 0; |
c906108c | 3207 | |
48d7020b | 3208 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3209 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3210 | val |= remove_breakpoint (bl); |
01add95b | 3211 | |
3a1bae8e | 3212 | return val; |
c906108c SS |
3213 | } |
3214 | ||
49fa26b0 PA |
3215 | /* When a thread exits, remove breakpoints that are related to |
3216 | that thread. */ | |
3217 | ||
3218 | static void | |
3219 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3220 | { | |
1428b37a | 3221 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3222 | { |
5d5658a1 | 3223 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3224 | { |
3225 | b->disposition = disp_del_at_next_stop; | |
3226 | ||
6cb06a8c | 3227 | gdb_printf (_("\ |
43792cf0 | 3228 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
6cb06a8c | 3229 | b->number, print_thread_id (tp)); |
49fa26b0 PA |
3230 | |
3231 | /* Hide it from the user. */ | |
3232 | b->number = 0; | |
3233 | } | |
3234 | } | |
3235 | } | |
3236 | ||
f3869b1a | 3237 | /* See breakpoint.h. */ |
6c95b8df | 3238 | |
f3869b1a | 3239 | void |
00431a78 | 3240 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3241 | { |
6c95b8df | 3242 | int val; |
6c95b8df | 3243 | |
48d7020b | 3244 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3245 | { |
3246 | if (bl->pspace != inf->pspace) | |
3247 | continue; | |
6c95b8df | 3248 | |
01add95b SM |
3249 | if (bl->inserted && !bl->target_info.persist) |
3250 | { | |
3251 | val = remove_breakpoint (bl); | |
3252 | if (val != 0) | |
3253 | return; | |
3254 | } | |
3255 | } | |
6c95b8df PA |
3256 | } |
3257 | ||
e58b0e63 PA |
3258 | static int internal_breakpoint_number = -1; |
3259 | ||
84f4c1fe PM |
3260 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3261 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3262 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3263 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3264 | breakpoint_count and that value incremented. Internal breakpoints |
3265 | do not set the internal var bpnum. */ | |
3266 | static void | |
3267 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3268 | { | |
3269 | if (internal) | |
3270 | b->number = internal_breakpoint_number--; | |
3271 | else | |
3272 | { | |
3273 | set_breakpoint_count (breakpoint_count + 1); | |
3274 | b->number = breakpoint_count; | |
3275 | } | |
3276 | } | |
3277 | ||
e62c965a | 3278 | static struct breakpoint * |
a6d9a66e | 3279 | create_internal_breakpoint (struct gdbarch *gdbarch, |
9efa3c7f | 3280 | CORE_ADDR address, enum bptype type) |
e62c965a | 3281 | { |
51abb421 | 3282 | symtab_and_line sal; |
e62c965a PP |
3283 | sal.pc = address; |
3284 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3285 | sal.pspace = current_program_space; |
e62c965a | 3286 | |
9efa3c7f | 3287 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
3288 | b->number = internal_breakpoint_number--; |
3289 | b->disposition = disp_donttouch; | |
3290 | ||
3291 | return b; | |
3292 | } | |
3293 | ||
17450429 PP |
3294 | static const char *const longjmp_names[] = |
3295 | { | |
3296 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3297 | }; | |
3298 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3299 | ||
3300 | /* Per-objfile data private to breakpoint.c. */ | |
3301 | struct breakpoint_objfile_data | |
3302 | { | |
3303 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
f6b3ad54 | 3304 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3305 | |
3306 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
f6b3ad54 | 3307 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3308 | |
28106bc2 | 3309 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3310 | int longjmp_searched = 0; |
28106bc2 | 3311 | |
45461e0d SM |
3312 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3313 | references. */ | |
3314 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3315 | |
17450429 | 3316 | /* Minimal symbol for "std::terminate()" (if any). */ |
f6b3ad54 | 3317 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3318 | |
3319 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
f6b3ad54 | 3320 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3321 | |
3322 | /* True if we have looked for exception probes. */ | |
43dce439 | 3323 | int exception_searched = 0; |
28106bc2 | 3324 | |
45461e0d SM |
3325 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3326 | references. */ | |
3327 | std::vector<probe *> exception_probes; | |
17450429 PP |
3328 | }; |
3329 | ||
51d3063a TT |
3330 | static const struct objfile_key<breakpoint_objfile_data> |
3331 | breakpoint_objfile_key; | |
17450429 PP |
3332 | |
3333 | /* Minimal symbol not found sentinel. */ | |
3334 | static struct minimal_symbol msym_not_found; | |
3335 | ||
3336 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3337 | ||
3338 | static int | |
3339 | msym_not_found_p (const struct minimal_symbol *msym) | |
3340 | { | |
3341 | return msym == &msym_not_found; | |
3342 | } | |
3343 | ||
3344 | /* Return per-objfile data needed by breakpoint.c. | |
3345 | Allocate the data if necessary. */ | |
3346 | ||
3347 | static struct breakpoint_objfile_data * | |
3348 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3349 | { | |
3350 | struct breakpoint_objfile_data *bp_objfile_data; | |
3351 | ||
51d3063a | 3352 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3353 | if (bp_objfile_data == NULL) |
51d3063a | 3354 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3355 | return bp_objfile_data; |
3356 | } | |
3357 | ||
e62c965a | 3358 | static void |
af02033e | 3359 | create_overlay_event_breakpoint (void) |
e62c965a | 3360 | { |
af02033e | 3361 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3362 | |
2030c079 | 3363 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3364 | { |
3365 | struct breakpoint *b; | |
17450429 PP |
3366 | struct breakpoint_objfile_data *bp_objfile_data; |
3367 | CORE_ADDR addr; | |
67994074 | 3368 | struct explicit_location explicit_loc; |
69de3c6a | 3369 | |
17450429 PP |
3370 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3371 | ||
3b7344d5 | 3372 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3373 | continue; |
3374 | ||
3b7344d5 | 3375 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3376 | { |
3b7344d5 | 3377 | struct bound_minimal_symbol m; |
17450429 PP |
3378 | |
3379 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3380 | if (m.minsym == NULL) |
17450429 PP |
3381 | { |
3382 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3383 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3384 | continue; |
3385 | } | |
3386 | bp_objfile_data->overlay_msym = m; | |
3387 | } | |
e62c965a | 3388 | |
4aeddc50 | 3389 | addr = bp_objfile_data->overlay_msym.value_address (); |
08feed99 | 3390 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3391 | bp_overlay_event); |
67994074 KS |
3392 | initialize_explicit_location (&explicit_loc); |
3393 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3394 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3395 | |
69de3c6a | 3396 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3397 | { |
3398 | b->enable_state = bp_enabled; | |
3399 | overlay_events_enabled = 1; | |
3400 | } | |
69de3c6a PP |
3401 | else |
3402 | { | |
dda83cd7 SM |
3403 | b->enable_state = bp_disabled; |
3404 | overlay_events_enabled = 0; | |
69de3c6a | 3405 | } |
e62c965a | 3406 | } |
e62c965a PP |
3407 | } |
3408 | ||
2a7f6487 TV |
3409 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3410 | true if a breakpoint was installed. */ | |
3411 | ||
3412 | static bool | |
3413 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3414 | { |
2a7f6487 TV |
3415 | struct gdbarch *gdbarch = objfile->arch (); |
3416 | struct breakpoint_objfile_data *bp_objfile_data | |
3417 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3418 | |
2a7f6487 | 3419 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3420 | { |
2a7f6487 TV |
3421 | std::vector<probe *> ret |
3422 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3423 | |
2a7f6487 | 3424 | if (!ret.empty ()) |
94c93c35 | 3425 | { |
2a7f6487 TV |
3426 | /* We are only interested in checking one element. */ |
3427 | probe *p = ret[0]; | |
0fd8e87f | 3428 | |
2a7f6487 TV |
3429 | if (!p->can_evaluate_arguments ()) |
3430 | { | |
3431 | /* We cannot use the probe interface here, | |
3432 | because it does not know how to evaluate | |
3433 | arguments. */ | |
3434 | ret.clear (); | |
3435 | } | |
3436 | } | |
3437 | bp_objfile_data->longjmp_probes = ret; | |
3438 | bp_objfile_data->longjmp_searched = 1; | |
3439 | } | |
0fd8e87f | 3440 | |
2a7f6487 TV |
3441 | if (bp_objfile_data->longjmp_probes.empty ()) |
3442 | return false; | |
17450429 | 3443 | |
2a7f6487 TV |
3444 | for (probe *p : bp_objfile_data->longjmp_probes) |
3445 | { | |
3446 | struct breakpoint *b; | |
25f9533e | 3447 | |
2a7f6487 TV |
3448 | b = create_internal_breakpoint (gdbarch, |
3449 | p->get_relocated_address (objfile), | |
9efa3c7f | 3450 | bp_longjmp_master); |
2a7f6487 TV |
3451 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
3452 | b->enable_state = bp_disabled; | |
3453 | } | |
aed57c53 | 3454 | |
2a7f6487 TV |
3455 | return true; |
3456 | } | |
25f9533e | 3457 | |
2a7f6487 TV |
3458 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3459 | Return true if at least one breakpoint was installed. */ | |
3460 | ||
3461 | static bool | |
3462 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3463 | { | |
3464 | struct gdbarch *gdbarch = objfile->arch (); | |
3465 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3466 | return false; | |
3467 | ||
3468 | struct breakpoint_objfile_data *bp_objfile_data | |
3469 | = get_breakpoint_objfile_data (objfile); | |
3470 | unsigned int installed_bp = 0; | |
3471 | ||
3472 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3473 | { | |
3474 | struct breakpoint *b; | |
3475 | const char *func_name; | |
3476 | CORE_ADDR addr; | |
3477 | struct explicit_location explicit_loc; | |
3478 | ||
3479 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3480 | continue; | |
28106bc2 | 3481 | |
2a7f6487 TV |
3482 | func_name = longjmp_names[i]; |
3483 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3484 | { | |
3485 | struct bound_minimal_symbol m; | |
3486 | ||
3487 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3488 | if (m.minsym == NULL) | |
3489 | { | |
3490 | /* Prevent future lookups in this objfile. */ | |
3491 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3492 | continue; |
3493 | } | |
2a7f6487 TV |
3494 | bp_objfile_data->longjmp_msym[i] = m; |
3495 | } | |
28106bc2 | 3496 | |
4aeddc50 | 3497 | addr = bp_objfile_data->longjmp_msym[i].value_address (); |
9efa3c7f | 3498 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); |
2a7f6487 TV |
3499 | initialize_explicit_location (&explicit_loc); |
3500 | explicit_loc.function_name = ASTRDUP (func_name); | |
3501 | b->location = new_explicit_location (&explicit_loc); | |
3502 | b->enable_state = bp_disabled; | |
3503 | installed_bp++; | |
3504 | } | |
28106bc2 | 3505 | |
2a7f6487 TV |
3506 | return installed_bp > 0; |
3507 | } | |
0fd8e87f | 3508 | |
2a7f6487 | 3509 | /* Create a master longjmp breakpoint. */ |
17450429 | 3510 | |
2a7f6487 TV |
3511 | static void |
3512 | create_longjmp_master_breakpoint (void) | |
3513 | { | |
3514 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3515 | |
2a7f6487 TV |
3516 | for (struct program_space *pspace : program_spaces) |
3517 | { | |
3518 | set_current_program_space (pspace); | |
17450429 | 3519 | |
2a7f6487 TV |
3520 | for (objfile *obj : current_program_space->objfiles ()) |
3521 | { | |
3522 | /* Skip separate debug object, it's handled in the loop below. */ | |
3523 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3524 | continue; | |
3525 | ||
3526 | /* Try a probe kind breakpoint on main objfile. */ | |
3527 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3528 | continue; | |
3529 | ||
3530 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3531 | objfiles. */ | |
3532 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3533 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3534 | break; | |
94c93c35 TT |
3535 | } |
3536 | } | |
0fd8e87f UW |
3537 | } |
3538 | ||
af02033e | 3539 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3540 | static void |
af02033e | 3541 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3542 | { |
af02033e | 3543 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3544 | |
5ed8105e | 3545 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3546 | |
94c93c35 TT |
3547 | for (struct program_space *pspace : program_spaces) |
3548 | { | |
3549 | CORE_ADDR addr; | |
17450429 | 3550 | |
94c93c35 | 3551 | set_current_program_space (pspace); |
17450429 | 3552 | |
94c93c35 TT |
3553 | for (objfile *objfile : current_program_space->objfiles ()) |
3554 | { | |
3555 | struct breakpoint *b; | |
3556 | struct breakpoint_objfile_data *bp_objfile_data; | |
3557 | struct explicit_location explicit_loc; | |
aa7d318d | 3558 | |
94c93c35 | 3559 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3560 | |
94c93c35 TT |
3561 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3562 | continue; | |
17450429 | 3563 | |
94c93c35 TT |
3564 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3565 | { | |
3566 | struct bound_minimal_symbol m; | |
17450429 | 3567 | |
94c93c35 | 3568 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
60f62e2b SM |
3569 | if (m.minsym == NULL || (m.minsym->type () != mst_text |
3570 | && m.minsym->type () != mst_file_text)) | |
94c93c35 TT |
3571 | { |
3572 | /* Prevent future lookups in this objfile. */ | |
3573 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3574 | continue; | |
3575 | } | |
3576 | bp_objfile_data->terminate_msym = m; | |
3577 | } | |
aa7d318d | 3578 | |
4aeddc50 | 3579 | addr = bp_objfile_data->terminate_msym.value_address (); |
94c93c35 | 3580 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3581 | bp_std_terminate_master); |
94c93c35 TT |
3582 | initialize_explicit_location (&explicit_loc); |
3583 | explicit_loc.function_name = ASTRDUP (func_name); | |
3584 | b->location = new_explicit_location (&explicit_loc); | |
3585 | b->enable_state = bp_disabled; | |
3586 | } | |
3587 | } | |
aa7d318d TT |
3588 | } |
3589 | ||
1940319c TV |
3590 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3591 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3592 | |
1940319c TV |
3593 | static bool |
3594 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3595 | { |
1940319c TV |
3596 | struct breakpoint *b; |
3597 | struct gdbarch *gdbarch; | |
3598 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3599 | |
1940319c | 3600 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3601 | |
1940319c TV |
3602 | /* We prefer the SystemTap probe point if it exists. */ |
3603 | if (!bp_objfile_data->exception_searched) | |
3604 | { | |
3605 | std::vector<probe *> ret | |
3606 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3607 | |
1940319c | 3608 | if (!ret.empty ()) |
28106bc2 | 3609 | { |
1940319c TV |
3610 | /* We are only interested in checking one element. */ |
3611 | probe *p = ret[0]; | |
25f9533e | 3612 | |
1940319c | 3613 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3614 | { |
1940319c TV |
3615 | /* We cannot use the probe interface here, because it does |
3616 | not know how to evaluate arguments. */ | |
3617 | ret.clear (); | |
25f9533e | 3618 | } |
28106bc2 | 3619 | } |
1940319c TV |
3620 | bp_objfile_data->exception_probes = ret; |
3621 | bp_objfile_data->exception_searched = 1; | |
3622 | } | |
28106bc2 | 3623 | |
1940319c TV |
3624 | if (bp_objfile_data->exception_probes.empty ()) |
3625 | return false; | |
45461e0d | 3626 | |
1940319c | 3627 | gdbarch = objfile->arch (); |
28106bc2 | 3628 | |
1940319c TV |
3629 | for (probe *p : bp_objfile_data->exception_probes) |
3630 | { | |
3631 | b = create_internal_breakpoint (gdbarch, | |
3632 | p->get_relocated_address (objfile), | |
9efa3c7f | 3633 | bp_exception_master); |
1940319c TV |
3634 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
3635 | b->enable_state = bp_disabled; | |
3636 | } | |
28106bc2 | 3637 | |
1940319c TV |
3638 | return true; |
3639 | } | |
28106bc2 | 3640 | |
1940319c TV |
3641 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3642 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3643 | |
1940319c TV |
3644 | static bool |
3645 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3646 | { | |
3647 | const char *const func_name = "_Unwind_DebugHook"; | |
3648 | struct breakpoint *b; | |
3649 | struct gdbarch *gdbarch; | |
3650 | struct breakpoint_objfile_data *bp_objfile_data; | |
3651 | CORE_ADDR addr; | |
3652 | struct explicit_location explicit_loc; | |
186c406b | 3653 | |
1940319c | 3654 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3655 | |
1940319c TV |
3656 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3657 | return false; | |
17450429 | 3658 | |
1940319c TV |
3659 | gdbarch = objfile->arch (); |
3660 | ||
3661 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3662 | { | |
3663 | struct bound_minimal_symbol debug_hook; | |
3664 | ||
3665 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3666 | if (debug_hook.minsym == NULL) | |
3667 | { | |
3668 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3669 | return false; | |
186c406b | 3670 | } |
17450429 | 3671 | |
1940319c TV |
3672 | bp_objfile_data->exception_msym = debug_hook; |
3673 | } | |
3674 | ||
4aeddc50 | 3675 | addr = bp_objfile_data->exception_msym.value_address (); |
328d42d8 SM |
3676 | addr = gdbarch_convert_from_func_ptr_addr |
3677 | (gdbarch, addr, current_inferior ()->top_target ()); | |
9efa3c7f | 3678 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); |
1940319c TV |
3679 | initialize_explicit_location (&explicit_loc); |
3680 | explicit_loc.function_name = ASTRDUP (func_name); | |
3681 | b->location = new_explicit_location (&explicit_loc); | |
3682 | b->enable_state = bp_disabled; | |
3683 | ||
3684 | return true; | |
3685 | } | |
3686 | ||
3687 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3688 | ||
3689 | static void | |
3690 | create_exception_master_breakpoint (void) | |
3691 | { | |
3692 | for (objfile *obj : current_program_space->objfiles ()) | |
3693 | { | |
3694 | /* Skip separate debug object. */ | |
3695 | if (obj->separate_debug_objfile_backlink) | |
3696 | continue; | |
3697 | ||
3698 | /* Try a probe kind breakpoint. */ | |
3699 | if (create_exception_master_breakpoint_probe (obj)) | |
3700 | continue; | |
3701 | ||
7c6944ab TV |
3702 | /* Iterate over main and separate debug objects and try an |
3703 | _Unwind_DebugHook kind breakpoint. */ | |
3704 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3705 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3706 | break; |
186c406b | 3707 | } |
186c406b TT |
3708 | } |
3709 | ||
9ef9e6a6 KS |
3710 | /* Does B have a location spec? */ |
3711 | ||
3712 | static int | |
3713 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3714 | { | |
d28cd78a | 3715 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3716 | } |
3717 | ||
c906108c | 3718 | void |
fba45db2 | 3719 | update_breakpoints_after_exec (void) |
c906108c | 3720 | { |
25b22b0a PA |
3721 | /* We're about to delete breakpoints from GDB's lists. If the |
3722 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3723 | writing the breakpoints' "shadow contents" back into memory. The | |
3724 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3725 | do that. Instead, the target is responsible from marking | |
3726 | breakpoints out as soon as it detects an exec. We don't do that | |
3727 | here instead, because there may be other attempts to delete | |
3728 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3729 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3730 | if (bploc->pspace == current_program_space) |
3731 | gdb_assert (!bploc->inserted); | |
c906108c | 3732 | |
1428b37a | 3733 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3734 | { |
3735 | if (b->pspace != current_program_space) | |
c5aa993b | 3736 | continue; |
c906108c | 3737 | |
01add95b SM |
3738 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3739 | if (b->type == bp_shlib_event) | |
3740 | { | |
3741 | delete_breakpoint (b); | |
3742 | continue; | |
3743 | } | |
4efc6507 | 3744 | |
01add95b SM |
3745 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3746 | if (b->type == bp_jit_event) | |
3747 | { | |
3748 | delete_breakpoint (b); | |
3749 | continue; | |
3750 | } | |
c4093a6a | 3751 | |
01add95b SM |
3752 | /* Thread event breakpoints must be set anew after an exec(), |
3753 | as must overlay event and longjmp master breakpoints. */ | |
3754 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3755 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3756 | || b->type == bp_exception_master) | |
3757 | { | |
3758 | delete_breakpoint (b); | |
3759 | continue; | |
3760 | } | |
c5aa993b | 3761 | |
01add95b SM |
3762 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3763 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3764 | { | |
3765 | delete_breakpoint (b); | |
3766 | continue; | |
3767 | } | |
7c16b83e | 3768 | |
01add95b SM |
3769 | /* Just like single-step breakpoints. */ |
3770 | if (b->type == bp_single_step) | |
3771 | { | |
3772 | delete_breakpoint (b); | |
3773 | continue; | |
3774 | } | |
611c83ae | 3775 | |
01add95b SM |
3776 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3777 | after an exec. */ | |
3778 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3779 | || b->type == bp_longjmp_call_dummy | |
3780 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3781 | { | |
3782 | delete_breakpoint (b); | |
3783 | continue; | |
3784 | } | |
ce78b96d | 3785 | |
01add95b SM |
3786 | if (b->type == bp_catchpoint) |
3787 | { | |
3788 | /* For now, none of the bp_catchpoint breakpoints need to | |
3789 | do anything at this point. In the future, if some of | |
3790 | the catchpoints need to something, we will need to add | |
3791 | a new method, and call this method from here. */ | |
3792 | continue; | |
3793 | } | |
c5aa993b | 3794 | |
01add95b SM |
3795 | /* bp_finish is a special case. The only way we ought to be able |
3796 | to see one of these when an exec() has happened, is if the user | |
3797 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3798 | carries them to the call-site of the current callee, by setting | |
3799 | a temporary bp there and resuming. But in this case, the finish | |
3800 | will carry them entirely through the vfork & exec. | |
3801 | ||
3802 | We don't want to allow a bp_finish to remain inserted now. But | |
3803 | we can't safely delete it, 'cause finish_command has a handle to | |
3804 | the bp on a bpstat, and will later want to delete it. There's a | |
3805 | chance (and I've seen it happen) that if we delete the bp_finish | |
3806 | here, that its storage will get reused by the time finish_command | |
3807 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3808 | We really must allow finish_command to delete a bp_finish. | |
3809 | ||
3810 | In the absence of a general solution for the "how do we know | |
3811 | it's safe to delete something others may have handles to?" | |
3812 | problem, what we'll do here is just uninsert the bp_finish, and | |
3813 | let finish_command delete it. | |
3814 | ||
3815 | (We know the bp_finish is "doomed" in the sense that it's | |
3816 | momentary, and will be deleted as soon as finish_command sees | |
3817 | the inferior stopped. So it doesn't matter that the bp's | |
3818 | address is probably bogus in the new a.out, unlike e.g., the | |
3819 | solib breakpoints.) */ | |
3820 | ||
3821 | if (b->type == bp_finish) | |
3822 | { | |
3823 | continue; | |
3824 | } | |
3825 | ||
3826 | /* Without a symbolic address, we have little hope of the | |
3827 | pre-exec() address meaning the same thing in the post-exec() | |
3828 | a.out. */ | |
3829 | if (breakpoint_event_location_empty_p (b)) | |
3830 | { | |
3831 | delete_breakpoint (b); | |
3832 | continue; | |
3833 | } | |
3834 | } | |
c906108c SS |
3835 | } |
3836 | ||
3837 | int | |
d80ee84f | 3838 | detach_breakpoints (ptid_t ptid) |
c906108c | 3839 | { |
3a1bae8e | 3840 | int val = 0; |
2989a365 | 3841 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3842 | struct inferior *inf = current_inferior (); |
c5aa993b | 3843 | |
e99b03dc | 3844 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3845 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3846 | |
6c95b8df | 3847 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3848 | inferior_ptid = ptid; |
48d7020b | 3849 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3850 | { |
3851 | if (bl->pspace != inf->pspace) | |
3852 | continue; | |
3853 | ||
3854 | /* This function must physically remove breakpoints locations | |
3855 | from the specified ptid, without modifying the breakpoint | |
3856 | package's state. Locations of type bp_loc_other are only | |
3857 | maintained at GDB side. So, there is no need to remove | |
3858 | these bp_loc_other locations. Moreover, removing these | |
3859 | would modify the breakpoint package's state. */ | |
3860 | if (bl->loc_type == bp_loc_other) | |
3861 | continue; | |
3862 | ||
3863 | if (bl->inserted) | |
3864 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3865 | } | |
d03285ec | 3866 | |
3a1bae8e | 3867 | return val; |
c906108c SS |
3868 | } |
3869 | ||
35df4500 | 3870 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3871 | Note that this is used to detach breakpoints from a child fork. |
3872 | When we get here, the child isn't in the inferior list, and neither | |
3873 | do we have objects to represent its address space --- we should | |
35df4500 | 3874 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3875 | |
c906108c | 3876 | static int |
b2b6a7da | 3877 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3878 | { |
3879 | int val; | |
c5aa993b | 3880 | |
35df4500 TJB |
3881 | /* BL is never in moribund_locations by our callers. */ |
3882 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3883 | |
74960c60 VP |
3884 | /* The type of none suggests that owner is actually deleted. |
3885 | This should not ever happen. */ | |
35df4500 | 3886 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3887 | |
35df4500 TJB |
3888 | if (bl->loc_type == bp_loc_software_breakpoint |
3889 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3890 | { |
c02f5703 MS |
3891 | /* "Normal" instruction breakpoint: either the standard |
3892 | trap-instruction bp (bp_breakpoint), or a | |
3893 | bp_hardware_breakpoint. */ | |
3894 | ||
3895 | /* First check to see if we have to handle an overlay. */ | |
3896 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3897 | || bl->section == NULL |
3898 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3899 | { |
3900 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3901 | |
3902 | /* If we're trying to uninsert a memory breakpoint that we | |
3903 | know is set in a dynamic object that is marked | |
3904 | shlib_disabled, then either the dynamic object was | |
3905 | removed with "remove-symbol-file" or with | |
3906 | "nosharedlibrary". In the former case, we don't know | |
3907 | whether another dynamic object might have loaded over the | |
3908 | breakpoint's address -- the user might well let us know | |
3909 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3910 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3911 | list of dynamically loaded objects). If we have the |
3912 | breakpoint's shadow memory, that is, this is a software | |
3913 | breakpoint managed by GDB, check whether the breakpoint | |
3914 | is still inserted in memory, to avoid overwriting wrong | |
3915 | code with stale saved shadow contents. Note that HW | |
3916 | breakpoints don't have shadow memory, as they're | |
3917 | implemented using a mechanism that is not dependent on | |
3918 | being able to modify the target's memory, and as such | |
3919 | they should always be removed. */ | |
3920 | if (bl->shlib_disabled | |
3921 | && bl->target_info.shadow_len != 0 | |
3922 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3923 | val = 0; | |
3924 | else | |
c47614fe | 3925 | val = bl->owner->remove_location (bl, reason); |
c02f5703 | 3926 | } |
c906108c SS |
3927 | else |
3928 | { | |
4a64f543 | 3929 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3930 | Did we set a breakpoint at the LMA? */ |
3931 | if (!overlay_events_enabled) | |
3932 | { | |
3933 | /* Yes -- overlay event support is not active, so we | |
3934 | should have set a breakpoint at the LMA. Remove it. | |
3935 | */ | |
c02f5703 MS |
3936 | /* Ignore any failures: if the LMA is in ROM, we will |
3937 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3938 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3939 | target_remove_hw_breakpoint (bl->gdbarch, | |
3940 | &bl->overlay_target_info); | |
c02f5703 | 3941 | else |
35df4500 | 3942 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3943 | &bl->overlay_target_info, |
3944 | reason); | |
c02f5703 MS |
3945 | } |
3946 | /* Did we set a breakpoint at the VMA? | |
3947 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3948 | if (bl->inserted) |
c906108c | 3949 | { |
c02f5703 MS |
3950 | /* Yes -- remove it. Previously we did not bother to |
3951 | remove the breakpoint if the section had been | |
3952 | unmapped, but let's not rely on that being safe. We | |
3953 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3954 | |
3955 | /* However, we should remove *software* breakpoints only | |
3956 | if the section is still mapped, or else we overwrite | |
3957 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3958 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3959 | || section_is_mapped (bl->section)) | |
c47614fe | 3960 | val = bl->owner->remove_location (bl, reason); |
aa67235e UW |
3961 | else |
3962 | val = 0; | |
c906108c | 3963 | } |
c02f5703 MS |
3964 | else |
3965 | { | |
3966 | /* No -- not inserted, so no need to remove. No error. */ | |
3967 | val = 0; | |
3968 | } | |
c906108c | 3969 | } |
879d1e6b | 3970 | |
08351840 PA |
3971 | /* In some cases, we might not be able to remove a breakpoint in |
3972 | a shared library that has already been removed, but we have | |
3973 | not yet processed the shlib unload event. Similarly for an | |
3974 | unloaded add-symbol-file object - the user might not yet have | |
3975 | had the chance to remove-symbol-file it. shlib_disabled will | |
3976 | be set if the library/object has already been removed, but | |
3977 | the breakpoint hasn't been uninserted yet, e.g., after | |
3978 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3979 | always-inserted mode. */ | |
076855f9 | 3980 | if (val |
08351840 PA |
3981 | && (bl->loc_type == bp_loc_software_breakpoint |
3982 | && (bl->shlib_disabled | |
3983 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3984 | || shared_objfile_contains_address_p (bl->pspace, |
3985 | bl->address)))) | |
879d1e6b UW |
3986 | val = 0; |
3987 | ||
c906108c SS |
3988 | if (val) |
3989 | return val; | |
b2b6a7da | 3990 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3991 | } |
35df4500 | 3992 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3993 | { |
b2b6a7da | 3994 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c47614fe | 3995 | bl->owner->remove_location (bl, reason); |
2e70b7b9 | 3996 | |
c906108c | 3997 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3998 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3999 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4000 | bl->owner->number); |
c906108c | 4001 | } |
35df4500 | 4002 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
4003 | && breakpoint_enabled (bl->owner) |
4004 | && !bl->duplicate) | |
ce78b96d | 4005 | { |
c47614fe | 4006 | val = bl->owner->remove_location (bl, reason); |
ce78b96d JB |
4007 | if (val) |
4008 | return val; | |
77b06cd7 | 4009 | |
b2b6a7da | 4010 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 4011 | } |
c906108c SS |
4012 | |
4013 | return 0; | |
4014 | } | |
4015 | ||
6c95b8df | 4016 | static int |
834c0d03 | 4017 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 4018 | { |
35df4500 TJB |
4019 | /* BL is never in moribund_locations by our callers. */ |
4020 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4021 | |
6c95b8df PA |
4022 | /* The type of none suggests that owner is actually deleted. |
4023 | This should not ever happen. */ | |
35df4500 | 4024 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 4025 | |
5ed8105e | 4026 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 4027 | |
35df4500 | 4028 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4029 | |
5ed8105e | 4030 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
4031 | } |
4032 | ||
c906108c SS |
4033 | /* Clear the "inserted" flag in all breakpoints. */ |
4034 | ||
25b22b0a | 4035 | void |
fba45db2 | 4036 | mark_breakpoints_out (void) |
c906108c | 4037 | { |
48d7020b | 4038 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 4039 | if (bl->pspace == current_program_space) |
35df4500 | 4040 | bl->inserted = 0; |
c906108c SS |
4041 | } |
4042 | ||
53a5351d JM |
4043 | /* Clear the "inserted" flag in all breakpoints and delete any |
4044 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4045 | |
4046 | Plus other such housekeeping that has to be done for breakpoints | |
4047 | between runs. | |
4048 | ||
53a5351d JM |
4049 | Note: this function gets called at the end of a run (by |
4050 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4051 | init_wait_for_inferior). */ |
c906108c SS |
4052 | |
4053 | ||
4054 | ||
4055 | void | |
fba45db2 | 4056 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4057 | { |
6c95b8df | 4058 | struct program_space *pspace = current_program_space; |
c906108c | 4059 | |
50c71eaf PA |
4060 | /* If breakpoint locations are shared across processes, then there's |
4061 | nothing to do. */ | |
f5656ead | 4062 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4063 | return; |
4064 | ||
1a853c52 | 4065 | mark_breakpoints_out (); |
075f6582 | 4066 | |
1428b37a | 4067 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
4068 | { |
4069 | if (b->loc && b->loc->pspace != pspace) | |
4070 | continue; | |
6c95b8df | 4071 | |
01add95b SM |
4072 | switch (b->type) |
4073 | { | |
4074 | case bp_call_dummy: | |
4075 | case bp_longjmp_call_dummy: | |
c906108c | 4076 | |
01add95b SM |
4077 | /* If the call dummy breakpoint is at the entry point it will |
4078 | cause problems when the inferior is rerun, so we better get | |
4079 | rid of it. */ | |
ab92d69b | 4080 | |
01add95b | 4081 | case bp_watchpoint_scope: |
ab92d69b | 4082 | |
01add95b | 4083 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 4084 | |
01add95b | 4085 | case bp_shlib_event: |
ab92d69b | 4086 | |
01add95b SM |
4087 | /* Also remove solib event breakpoints. Their addresses may |
4088 | have changed since the last time we ran the program. | |
4089 | Actually we may now be debugging against different target; | |
4090 | and so the solib backend that installed this breakpoint may | |
4091 | not be used in by the target. E.g., | |
ab92d69b | 4092 | |
01add95b SM |
4093 | (gdb) file prog-linux |
4094 | (gdb) run # native linux target | |
4095 | ... | |
4096 | (gdb) kill | |
4097 | (gdb) file prog-win.exe | |
4098 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4099 | */ | |
c906108c | 4100 | |
01add95b | 4101 | case bp_step_resume: |
f59f708a | 4102 | |
01add95b | 4103 | /* Also remove step-resume breakpoints. */ |
f59f708a | 4104 | |
01add95b | 4105 | case bp_single_step: |
7c16b83e | 4106 | |
01add95b | 4107 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4108 | |
01add95b SM |
4109 | delete_breakpoint (b); |
4110 | break; | |
c906108c | 4111 | |
01add95b SM |
4112 | case bp_watchpoint: |
4113 | case bp_hardware_watchpoint: | |
4114 | case bp_read_watchpoint: | |
4115 | case bp_access_watchpoint: | |
4116 | { | |
4117 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4118 | |
01add95b SM |
4119 | /* Likewise for watchpoints on local expressions. */ |
4120 | if (w->exp_valid_block != NULL) | |
4121 | delete_breakpoint (b); | |
4122 | else | |
4123 | { | |
4124 | /* Get rid of existing locations, which are no longer | |
4125 | valid. New ones will be created in | |
4126 | update_watchpoint, when the inferior is restarted. | |
4127 | The next update_global_location_list call will | |
4128 | garbage collect them. */ | |
4129 | b->loc = NULL; | |
4130 | ||
4131 | if (context == inf_starting) | |
4132 | { | |
4133 | /* Reset val field to force reread of starting value in | |
4134 | insert_breakpoints. */ | |
4135 | w->val.reset (nullptr); | |
4136 | w->val_valid = false; | |
4137 | } | |
4138 | } | |
4139 | } | |
4140 | break; | |
4141 | default: | |
4142 | break; | |
3a5c3e22 | 4143 | } |
01add95b | 4144 | } |
1c5cfe86 PA |
4145 | |
4146 | /* Get rid of the moribund locations. */ | |
1123588c | 4147 | for (bp_location *bl : moribund_locations) |
35df4500 | 4148 | decref_bp_location (&bl); |
1123588c | 4149 | moribund_locations.clear (); |
c906108c SS |
4150 | } |
4151 | ||
6c95b8df PA |
4152 | /* These functions concern about actual breakpoints inserted in the |
4153 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4154 | we need to hop over the bkpt --- so we check for address space | |
4155 | match, not program space. */ | |
4156 | ||
c2c6d25f JM |
4157 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4158 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4159 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4160 | permanent breakpoint. | |
4161 | - When continuing from a location with an ordinary breakpoint, we | |
4162 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4163 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4164 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4165 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4166 | |
c2c6d25f | 4167 | enum breakpoint_here |
accd0bcd | 4168 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4169 | { |
c2c6d25f | 4170 | int any_breakpoint_here = 0; |
c906108c | 4171 | |
48d7020b | 4172 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4173 | { |
35df4500 TJB |
4174 | if (bl->loc_type != bp_loc_software_breakpoint |
4175 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4176 | continue; |
4177 | ||
f1310107 | 4178 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4179 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4180 | || bl->permanent) |
f1310107 | 4181 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4182 | { |
4183 | if (overlay_debugging | |
35df4500 TJB |
4184 | && section_is_overlay (bl->section) |
4185 | && !section_is_mapped (bl->section)) | |
075f6582 | 4186 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4187 | else if (bl->permanent) |
075f6582 DJ |
4188 | return permanent_breakpoint_here; |
4189 | else | |
4190 | any_breakpoint_here = 1; | |
4191 | } | |
4192 | } | |
c906108c | 4193 | |
f486487f | 4194 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4195 | } |
4196 | ||
d35ae833 PA |
4197 | /* See breakpoint.h. */ |
4198 | ||
4199 | int | |
accd0bcd | 4200 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4201 | CORE_ADDR addr, ULONGEST len) |
4202 | { | |
48d7020b | 4203 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4204 | { |
4205 | if (bl->loc_type != bp_loc_software_breakpoint | |
4206 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4207 | continue; | |
4208 | ||
4209 | if ((breakpoint_enabled (bl->owner) | |
4210 | || bl->permanent) | |
4211 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4212 | addr, len)) | |
4213 | { | |
4214 | if (overlay_debugging | |
4215 | && section_is_overlay (bl->section) | |
4216 | && !section_is_mapped (bl->section)) | |
4217 | { | |
4218 | /* Unmapped overlay -- can't be a match. */ | |
4219 | continue; | |
4220 | } | |
4221 | ||
4222 | return 1; | |
4223 | } | |
4224 | } | |
4225 | ||
4226 | return 0; | |
4227 | } | |
4228 | ||
1c5cfe86 PA |
4229 | /* Return true if there's a moribund breakpoint at PC. */ |
4230 | ||
4231 | int | |
accd0bcd | 4232 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4233 | { |
1123588c | 4234 | for (bp_location *loc : moribund_locations) |
f1310107 | 4235 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4236 | return 1; |
4237 | ||
4238 | return 0; | |
4239 | } | |
c2c6d25f | 4240 | |
f7ce857f PA |
4241 | /* Returns non-zero iff BL is inserted at PC, in address space |
4242 | ASPACE. */ | |
4243 | ||
4244 | static int | |
4245 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4246 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4247 | { |
4248 | if (bl->inserted | |
4249 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4250 | aspace, pc)) | |
4251 | { | |
4252 | if (overlay_debugging | |
4253 | && section_is_overlay (bl->section) | |
4254 | && !section_is_mapped (bl->section)) | |
4255 | return 0; /* unmapped overlay -- can't be a match */ | |
4256 | else | |
4257 | return 1; | |
4258 | } | |
4259 | return 0; | |
4260 | } | |
4261 | ||
a1fd2fa5 | 4262 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4263 | |
4264 | int | |
accd0bcd | 4265 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4266 | { |
e0d9a270 | 4267 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4268 | { |
35df4500 TJB |
4269 | if (bl->loc_type != bp_loc_software_breakpoint |
4270 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4271 | continue; |
4272 | ||
f7ce857f PA |
4273 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4274 | return 1; | |
c5aa993b | 4275 | } |
c36b740a VP |
4276 | return 0; |
4277 | } | |
4278 | ||
a1fd2fa5 PA |
4279 | /* This function returns non-zero iff there is a software breakpoint |
4280 | inserted at PC. */ | |
c36b740a VP |
4281 | |
4282 | int | |
accd0bcd | 4283 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4284 | CORE_ADDR pc) |
4fa8626c | 4285 | { |
e0d9a270 | 4286 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4287 | { |
35df4500 | 4288 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4289 | continue; |
4290 | ||
f7ce857f PA |
4291 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4292 | return 1; | |
4fa8626c DJ |
4293 | } |
4294 | ||
4295 | return 0; | |
9c02b525 PA |
4296 | } |
4297 | ||
4298 | /* See breakpoint.h. */ | |
4299 | ||
4300 | int | |
accd0bcd | 4301 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4302 | CORE_ADDR pc) |
4303 | { | |
e0d9a270 | 4304 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4305 | { |
9c02b525 PA |
4306 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4307 | continue; | |
4308 | ||
4309 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4310 | return 1; | |
4311 | } | |
4312 | ||
4313 | return 0; | |
4fa8626c DJ |
4314 | } |
4315 | ||
9093389c | 4316 | int |
accd0bcd | 4317 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4318 | CORE_ADDR addr, ULONGEST len) |
4319 | { | |
43892fdf | 4320 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4321 | { |
9093389c PA |
4322 | if (bpt->type != bp_hardware_watchpoint |
4323 | && bpt->type != bp_access_watchpoint) | |
4324 | continue; | |
4325 | ||
4326 | if (!breakpoint_enabled (bpt)) | |
4327 | continue; | |
4328 | ||
40cb8ca5 | 4329 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4330 | if (loc->pspace->aspace == aspace && loc->inserted) |
4331 | { | |
4332 | CORE_ADDR l, h; | |
4333 | ||
4334 | /* Check for intersection. */ | |
768adc05 PA |
4335 | l = std::max<CORE_ADDR> (loc->address, addr); |
4336 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4337 | if (l < h) |
4338 | return 1; | |
4339 | } | |
4340 | } | |
4341 | return 0; | |
4342 | } | |
c5aa993b | 4343 | |
f2478a7e | 4344 | /* See breakpoint.h. */ |
c906108c | 4345 | |
f2478a7e SM |
4346 | bool |
4347 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4348 | { |
f2478a7e | 4349 | return (b->type == bp_catchpoint); |
c906108c SS |
4350 | } |
4351 | ||
c906108c SS |
4352 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4353 | Also free any storage that is part of a bpstat. */ | |
4354 | ||
4355 | void | |
313f3b21 | 4356 | bpstat_clear (bpstat **bsp) |
c906108c | 4357 | { |
313f3b21 SM |
4358 | bpstat *p; |
4359 | bpstat *q; | |
c906108c SS |
4360 | |
4361 | if (bsp == 0) | |
4362 | return; | |
4363 | p = *bsp; | |
4364 | while (p != NULL) | |
4365 | { | |
4366 | q = p->next; | |
04afa70c | 4367 | delete p; |
c906108c SS |
4368 | p = q; |
4369 | } | |
4370 | *bsp = NULL; | |
4371 | } | |
4372 | ||
313f3b21 | 4373 | bpstat::bpstat (const bpstat &other) |
04afa70c TT |
4374 | : next (NULL), |
4375 | bp_location_at (other.bp_location_at), | |
4376 | breakpoint_at (other.breakpoint_at), | |
4377 | commands (other.commands), | |
04afa70c TT |
4378 | print (other.print), |
4379 | stop (other.stop), | |
4380 | print_it (other.print_it) | |
4381 | { | |
850645cf TT |
4382 | if (other.old_val != NULL) |
4383 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4384 | } |
4385 | ||
c906108c SS |
4386 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4387 | is part of the bpstat is copied as well. */ | |
4388 | ||
313f3b21 SM |
4389 | bpstat * |
4390 | bpstat_copy (bpstat *bs) | |
c906108c | 4391 | { |
313f3b21 SM |
4392 | bpstat *p = nullptr; |
4393 | bpstat *tmp; | |
4394 | bpstat *retval = nullptr; | |
c906108c SS |
4395 | |
4396 | if (bs == NULL) | |
4397 | return bs; | |
4398 | ||
4399 | for (; bs != NULL; bs = bs->next) | |
4400 | { | |
313f3b21 | 4401 | tmp = new bpstat (*bs); |
31cc81e9 | 4402 | |
c906108c SS |
4403 | if (p == NULL) |
4404 | /* This is the first thing in the chain. */ | |
4405 | retval = tmp; | |
4406 | else | |
4407 | p->next = tmp; | |
4408 | p = tmp; | |
4409 | } | |
4410 | p->next = NULL; | |
4411 | return retval; | |
4412 | } | |
4413 | ||
4a64f543 | 4414 | /* Find the bpstat associated with this breakpoint. */ |
c906108c | 4415 | |
313f3b21 SM |
4416 | bpstat * |
4417 | bpstat_find_breakpoint (bpstat *bsp, struct breakpoint *breakpoint) | |
c906108c | 4418 | { |
c5aa993b JM |
4419 | if (bsp == NULL) |
4420 | return NULL; | |
c906108c | 4421 | |
c5aa993b JM |
4422 | for (; bsp != NULL; bsp = bsp->next) |
4423 | { | |
f431efe5 | 4424 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4425 | return bsp; |
4426 | } | |
c906108c SS |
4427 | return NULL; |
4428 | } | |
4429 | ||
ab04a2af TT |
4430 | /* See breakpoint.h. */ |
4431 | ||
4c462cb0 | 4432 | bool |
313f3b21 | 4433 | bpstat_explains_signal (bpstat *bsp, enum gdb_signal sig) |
ab04a2af | 4434 | { |
ab04a2af TT |
4435 | for (; bsp != NULL; bsp = bsp->next) |
4436 | { | |
427cd150 TT |
4437 | if (bsp->breakpoint_at == NULL) |
4438 | { | |
4439 | /* A moribund location can never explain a signal other than | |
4440 | GDB_SIGNAL_TRAP. */ | |
4441 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4442 | return true; |
427cd150 TT |
4443 | } |
4444 | else | |
47591c29 | 4445 | { |
c47614fe | 4446 | if (bsp->breakpoint_at->explains_signal (sig)) |
4c462cb0 | 4447 | return true; |
47591c29 | 4448 | } |
ab04a2af TT |
4449 | } |
4450 | ||
4c462cb0 | 4451 | return false; |
ab04a2af TT |
4452 | } |
4453 | ||
4a64f543 MS |
4454 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4455 | stopped at. *BSP upon return is a bpstat which points to the | |
4456 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4457 | good for anything but further calls to bpstat_num). | |
4458 | ||
8671a17b PA |
4459 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4460 | Return -1 if stopped at a breakpoint that has been deleted since | |
4461 | we set it. | |
4462 | Return 1 otherwise. */ | |
c906108c SS |
4463 | |
4464 | int | |
313f3b21 | 4465 | bpstat_num (bpstat **bsp, int *num) |
c906108c SS |
4466 | { |
4467 | struct breakpoint *b; | |
4468 | ||
4469 | if ((*bsp) == NULL) | |
4470 | return 0; /* No more breakpoint values */ | |
8671a17b | 4471 | |
4a64f543 MS |
4472 | /* We assume we'll never have several bpstats that correspond to a |
4473 | single breakpoint -- otherwise, this function might return the | |
4474 | same number more than once and this will look ugly. */ | |
f431efe5 | 4475 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4476 | *bsp = (*bsp)->next; |
4477 | if (b == NULL) | |
4478 | return -1; /* breakpoint that's been deleted since */ | |
4479 | ||
4480 | *num = b->number; /* We have its number */ | |
4481 | return 1; | |
c906108c SS |
4482 | } |
4483 | ||
e93ca019 | 4484 | /* See breakpoint.h. */ |
c906108c SS |
4485 | |
4486 | void | |
e93ca019 | 4487 | bpstat_clear_actions (void) |
c906108c | 4488 | { |
313f3b21 | 4489 | bpstat *bs; |
e93ca019 | 4490 | |
00431a78 | 4491 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4492 | return; |
4493 | ||
00431a78 | 4494 | thread_info *tp = inferior_thread (); |
e93ca019 | 4495 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4496 | { |
d1b0a7bf | 4497 | bs->commands = NULL; |
850645cf | 4498 | bs->old_val.reset (nullptr); |
c906108c SS |
4499 | } |
4500 | } | |
4501 | ||
f3b1572e PA |
4502 | /* Called when a command is about to proceed the inferior. */ |
4503 | ||
4504 | static void | |
4505 | breakpoint_about_to_proceed (void) | |
4506 | { | |
d7e15655 | 4507 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4508 | { |
4509 | struct thread_info *tp = inferior_thread (); | |
4510 | ||
4511 | /* Allow inferior function calls in breakpoint commands to not | |
4512 | interrupt the command list. When the call finishes | |
4513 | successfully, the inferior will be standing at the same | |
4514 | breakpoint as if nothing happened. */ | |
16c381f0 | 4515 | if (tp->control.in_infcall) |
f3b1572e PA |
4516 | return; |
4517 | } | |
4518 | ||
4519 | breakpoint_proceeded = 1; | |
4520 | } | |
4521 | ||
abf85f46 JK |
4522 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4523 | or its equivalent. */ | |
4524 | ||
4525 | static int | |
4526 | command_line_is_silent (struct command_line *cmd) | |
4527 | { | |
4f45d445 | 4528 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4529 | } |
4530 | ||
4a64f543 MS |
4531 | /* Execute all the commands associated with all the breakpoints at |
4532 | this location. Any of these commands could cause the process to | |
4533 | proceed beyond this point, etc. We look out for such changes by | |
4534 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4535 | |
347bddb7 PA |
4536 | Returns true if a breakpoint command resumed the inferior. In that |
4537 | case, it is the caller's responsibility to recall it again with the | |
4538 | bpstat of the current thread. */ | |
4539 | ||
4540 | static int | |
313f3b21 | 4541 | bpstat_do_actions_1 (bpstat **bsp) |
c906108c | 4542 | { |
313f3b21 | 4543 | bpstat *bs; |
347bddb7 | 4544 | int again = 0; |
c906108c SS |
4545 | |
4546 | /* Avoid endless recursion if a `source' command is contained | |
4547 | in bs->commands. */ | |
4548 | if (executing_breakpoint_commands) | |
347bddb7 | 4549 | return 0; |
c906108c | 4550 | |
81b1e71c TT |
4551 | scoped_restore save_executing |
4552 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4553 | |
1ac32117 | 4554 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4555 | |
4a64f543 | 4556 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4557 | bs = *bsp; |
4558 | ||
4559 | breakpoint_proceeded = 0; | |
4560 | for (; bs != NULL; bs = bs->next) | |
4561 | { | |
d1b0a7bf | 4562 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4563 | |
4564 | /* Take ownership of the BSP's command tree, if it has one. | |
4565 | ||
dda83cd7 SM |
4566 | The command tree could legitimately contain commands like |
4567 | 'step' and 'next', which call clear_proceed_status, which | |
4568 | frees stop_bpstat's command tree. To make sure this doesn't | |
4569 | free the tree we're executing out from under us, we need to | |
4570 | take ownership of the tree ourselves. Since a given bpstat's | |
4571 | commands are only executed once, we don't need to copy it; we | |
4572 | can clear the pointer in the bpstat, and make sure we free | |
4573 | the tree when we're done. */ | |
d1b0a7bf | 4574 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4575 | bs->commands = NULL; |
d1b0a7bf TT |
4576 | if (ccmd != NULL) |
4577 | cmd = ccmd.get (); | |
abf85f46 JK |
4578 | if (command_line_is_silent (cmd)) |
4579 | { | |
4580 | /* The action has been already done by bpstat_stop_status. */ | |
4581 | cmd = cmd->next; | |
4582 | } | |
6c50ab1c | 4583 | |
c906108c SS |
4584 | while (cmd != NULL) |
4585 | { | |
4586 | execute_control_command (cmd); | |
4587 | ||
4588 | if (breakpoint_proceeded) | |
4589 | break; | |
4590 | else | |
4591 | cmd = cmd->next; | |
4592 | } | |
6c50ab1c | 4593 | |
c906108c | 4594 | if (breakpoint_proceeded) |
32c1e744 | 4595 | { |
cb814510 | 4596 | if (current_ui->async) |
347bddb7 PA |
4597 | /* If we are in async mode, then the target might be still |
4598 | running, not stopped at any breakpoint, so nothing for | |
4599 | us to do here -- just return to the event loop. */ | |
4600 | ; | |
32c1e744 VP |
4601 | else |
4602 | /* In sync mode, when execute_control_command returns | |
4603 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4604 | Breakpoint commands for that stop were not run, since |
4605 | execute_command does not run breakpoint commands -- | |
4606 | only command_line_handler does, but that one is not | |
4607 | involved in execution of breakpoint commands. So, we | |
4608 | can now execute breakpoint commands. It should be | |
4609 | noted that making execute_command do bpstat actions is | |
4610 | not an option -- in this case we'll have recursive | |
4611 | invocation of bpstat for each breakpoint with a | |
4612 | command, and can easily blow up GDB stack. Instead, we | |
4613 | return true, which will trigger the caller to recall us | |
4614 | with the new stop_bpstat. */ | |
4615 | again = 1; | |
4616 | break; | |
32c1e744 | 4617 | } |
c906108c | 4618 | } |
347bddb7 PA |
4619 | return again; |
4620 | } | |
4621 | ||
00431a78 PA |
4622 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4623 | one, is alive and has execution. Return NULL otherwise. */ | |
4624 | ||
4625 | static thread_info * | |
4626 | get_bpstat_thread () | |
4627 | { | |
55f6301a | 4628 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4629 | return NULL; |
4630 | ||
4631 | thread_info *tp = inferior_thread (); | |
611841bb | 4632 | if (tp->state == THREAD_EXITED || tp->executing ()) |
00431a78 PA |
4633 | return NULL; |
4634 | return tp; | |
4635 | } | |
4636 | ||
347bddb7 PA |
4637 | void |
4638 | bpstat_do_actions (void) | |
4639 | { | |
694c6bf5 | 4640 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4641 | thread_info *tp; |
353d1d73 | 4642 | |
347bddb7 | 4643 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4644 | while ((tp = get_bpstat_thread ()) != NULL) |
4645 | { | |
4646 | /* Since in sync mode, bpstat_do_actions may resume the | |
4647 | inferior, and only return when it is stopped at the next | |
4648 | breakpoint, we keep doing breakpoint actions until it returns | |
4649 | false to indicate the inferior was not resumed. */ | |
4650 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4651 | break; | |
4652 | } | |
353d1d73 | 4653 | |
694c6bf5 | 4654 | cleanup_if_error.release (); |
c906108c SS |
4655 | } |
4656 | ||
fa4727a6 DJ |
4657 | /* Print out the (old or new) value associated with a watchpoint. */ |
4658 | ||
4659 | static void | |
4660 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4661 | { | |
4662 | if (val == NULL) | |
7f6aba03 | 4663 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4664 | else |
79a45b7d TT |
4665 | { |
4666 | struct value_print_options opts; | |
4667 | get_user_print_options (&opts); | |
4668 | value_print (val, stream, &opts); | |
4669 | } | |
fa4727a6 DJ |
4670 | } |
4671 | ||
f303dbd6 PA |
4672 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4673 | debugging multiple threads. */ | |
4674 | ||
4675 | void | |
4676 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4677 | { | |
112e8700 | 4678 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4679 | return; |
4680 | ||
112e8700 | 4681 | uiout->text ("\n"); |
f303dbd6 PA |
4682 | |
4683 | if (show_thread_that_caused_stop ()) | |
4684 | { | |
f303dbd6 PA |
4685 | struct thread_info *thr = inferior_thread (); |
4686 | ||
112e8700 | 4687 | uiout->text ("Thread "); |
33eca680 | 4688 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 | 4689 | |
25558938 | 4690 | const char *name = thread_name (thr); |
f303dbd6 PA |
4691 | if (name != NULL) |
4692 | { | |
112e8700 | 4693 | uiout->text (" \""); |
33eca680 | 4694 | uiout->field_string ("name", name); |
112e8700 | 4695 | uiout->text ("\""); |
f303dbd6 PA |
4696 | } |
4697 | ||
112e8700 | 4698 | uiout->text (" hit "); |
f303dbd6 PA |
4699 | } |
4700 | } | |
4701 | ||
e514a9d6 | 4702 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4703 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4704 | 'print_it' in the bpstat structure. Under some circumstances we |
4705 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4706 | normal_stop(). */ |
e514a9d6 JM |
4707 | |
4708 | static enum print_stop_action | |
313f3b21 | 4709 | print_bp_stop_message (bpstat *bs) |
e514a9d6 JM |
4710 | { |
4711 | switch (bs->print_it) | |
4712 | { | |
4713 | case print_it_noop: | |
4a64f543 | 4714 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4715 | return PRINT_UNKNOWN; |
4716 | break; | |
4717 | ||
4718 | case print_it_done: | |
4719 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4720 | relevant messages. */ |
e514a9d6 JM |
4721 | return PRINT_SRC_AND_LOC; |
4722 | break; | |
4723 | ||
4724 | case print_it_normal: | |
4f8d1dc6 | 4725 | { |
f431efe5 PA |
4726 | struct breakpoint *b = bs->breakpoint_at; |
4727 | ||
1a6a67de TJB |
4728 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4729 | which has since been deleted. */ | |
4730 | if (b == NULL) | |
4731 | return PRINT_UNKNOWN; | |
4732 | ||
348d480f | 4733 | /* Normal case. Call the breakpoint's print_it method. */ |
c47614fe | 4734 | return b->print_it (bs); |
4f8d1dc6 | 4735 | } |
348d480f | 4736 | break; |
3086aeae | 4737 | |
e514a9d6 | 4738 | default: |
8e65ff28 | 4739 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4740 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4741 | break; |
c906108c | 4742 | } |
c906108c SS |
4743 | } |
4744 | ||
2f9ee862 | 4745 | /* See breakpoint.h. */ |
edcc5120 | 4746 | |
2f9ee862 | 4747 | void |
4e9e993a | 4748 | print_solib_event (bool is_catchpoint) |
edcc5120 | 4749 | { |
6fb16ce6 | 4750 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4751 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4752 | |
4753 | if (!is_catchpoint) | |
4754 | { | |
4755 | if (any_added || any_deleted) | |
112e8700 | 4756 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4757 | else |
112e8700 SM |
4758 | current_uiout->text (_("Stopped due to shared library event (no " |
4759 | "libraries added or removed)\n")); | |
edcc5120 TT |
4760 | } |
4761 | ||
112e8700 SM |
4762 | if (current_uiout->is_mi_like_p ()) |
4763 | current_uiout->field_string ("reason", | |
4764 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4765 | |
4766 | if (any_deleted) | |
4767 | { | |
112e8700 | 4768 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4769 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4770 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4771 | { |
6fb16ce6 SM |
4772 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4773 | ||
edcc5120 | 4774 | if (ix > 0) |
112e8700 SM |
4775 | current_uiout->text (" "); |
4776 | current_uiout->field_string ("library", name); | |
4777 | current_uiout->text ("\n"); | |
edcc5120 | 4778 | } |
edcc5120 TT |
4779 | } |
4780 | ||
4781 | if (any_added) | |
4782 | { | |
112e8700 | 4783 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4784 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4785 | bool first = true; |
52941706 | 4786 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4787 | { |
bcb430e4 | 4788 | if (!first) |
112e8700 | 4789 | current_uiout->text (" "); |
bcb430e4 | 4790 | first = false; |
112e8700 SM |
4791 | current_uiout->field_string ("library", iter->so_name); |
4792 | current_uiout->text ("\n"); | |
edcc5120 | 4793 | } |
edcc5120 TT |
4794 | } |
4795 | } | |
4796 | ||
e514a9d6 JM |
4797 | /* Print a message indicating what happened. This is called from |
4798 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4799 | list - a list of the eventpoints that caused this stop. KIND is |
4800 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4801 | routine calls the generic print routine for printing a message |
4802 | about reasons for stopping. This will print (for example) the | |
4803 | "Breakpoint n," part of the output. The return value of this | |
4804 | routine is one of: | |
c906108c | 4805 | |
4a64f543 | 4806 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4807 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4808 | code to print the location. An example is |
c5aa993b JM |
4809 | "Breakpoint 1, " which should be followed by |
4810 | the location. | |
917317f4 | 4811 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4812 | to also print the location part of the message. |
4813 | An example is the catch/throw messages, which | |
4a64f543 | 4814 | don't require a location appended to the end. |
917317f4 | 4815 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4816 | further info to be printed. */ |
c906108c | 4817 | |
917317f4 | 4818 | enum print_stop_action |
313f3b21 | 4819 | bpstat_print (bpstat *bs, int kind) |
c906108c | 4820 | { |
f486487f | 4821 | enum print_stop_action val; |
c5aa993b | 4822 | |
c906108c | 4823 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4824 | (Currently all watchpoints go on the bpstat whether hit or not. |
4825 | That probably could (should) be changed, provided care is taken | |
c906108c | 4826 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4827 | for (; bs; bs = bs->next) |
4828 | { | |
4829 | val = print_bp_stop_message (bs); | |
4830 | if (val == PRINT_SRC_ONLY | |
4831 | || val == PRINT_SRC_AND_LOC | |
4832 | || val == PRINT_NOTHING) | |
4833 | return val; | |
4834 | } | |
c906108c | 4835 | |
36dfb11c TT |
4836 | /* If we had hit a shared library event breakpoint, |
4837 | print_bp_stop_message would print out this message. If we hit an | |
4838 | OS-level shared library event, do the same thing. */ | |
4839 | if (kind == TARGET_WAITKIND_LOADED) | |
4840 | { | |
4e9e993a | 4841 | print_solib_event (false); |
36dfb11c TT |
4842 | return PRINT_NOTHING; |
4843 | } | |
4844 | ||
e514a9d6 | 4845 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4846 | with and nothing was printed. */ |
917317f4 | 4847 | return PRINT_UNKNOWN; |
c906108c SS |
4848 | } |
4849 | ||
bf469271 | 4850 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4851 | |
bf469271 PA |
4852 | static bool |
4853 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4854 | { |
278cd55f | 4855 | struct value *mark = value_mark (); |
bf469271 | 4856 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4857 | |
c906108c | 4858 | value_free_to_mark (mark); |
bf469271 | 4859 | return res; |
c906108c SS |
4860 | } |
4861 | ||
5760d0ab | 4862 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4863 | |
313f3b21 | 4864 | bpstat::bpstat (struct bp_location *bl, bpstat ***bs_link_pointer) |
04afa70c | 4865 | : next (NULL), |
b6433ede | 4866 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4867 | breakpoint_at (bl->owner), |
4868 | commands (NULL), | |
04afa70c TT |
4869 | print (0), |
4870 | stop (0), | |
4871 | print_it (print_it_normal) | |
c906108c | 4872 | { |
04afa70c TT |
4873 | **bs_link_pointer = this; |
4874 | *bs_link_pointer = &next; | |
4875 | } | |
4876 | ||
313f3b21 | 4877 | bpstat::bpstat () |
04afa70c | 4878 | : next (NULL), |
04afa70c TT |
4879 | breakpoint_at (NULL), |
4880 | commands (NULL), | |
04afa70c TT |
4881 | print (0), |
4882 | stop (0), | |
4883 | print_it (print_it_normal) | |
4884 | { | |
c906108c SS |
4885 | } |
4886 | \f | |
d983da9c DJ |
4887 | /* The target has stopped with waitstatus WS. Check if any hardware |
4888 | watchpoints have triggered, according to the target. */ | |
4889 | ||
4890 | int | |
c272a98c | 4891 | watchpoints_triggered (const target_waitstatus &ws) |
d983da9c | 4892 | { |
57810aa7 | 4893 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4894 | CORE_ADDR addr; |
d983da9c DJ |
4895 | |
4896 | if (!stopped_by_watchpoint) | |
4897 | { | |
4898 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4899 | as not triggered. */ | |
43892fdf | 4900 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4901 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4902 | { |
4903 | struct watchpoint *w = (struct watchpoint *) b; | |
4904 | ||
4905 | w->watchpoint_triggered = watch_triggered_no; | |
4906 | } | |
d983da9c DJ |
4907 | |
4908 | return 0; | |
4909 | } | |
4910 | ||
328d42d8 | 4911 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4912 | { |
4913 | /* We were stopped by a watchpoint, but we don't know where. | |
4914 | Mark all watchpoints as unknown. */ | |
43892fdf | 4915 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4916 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4917 | { |
4918 | struct watchpoint *w = (struct watchpoint *) b; | |
4919 | ||
4920 | w->watchpoint_triggered = watch_triggered_unknown; | |
4921 | } | |
d983da9c | 4922 | |
3c4797ba | 4923 | return 1; |
d983da9c DJ |
4924 | } |
4925 | ||
4926 | /* The target could report the data address. Mark watchpoints | |
4927 | affected by this data address as triggered, and all others as not | |
4928 | triggered. */ | |
4929 | ||
43892fdf | 4930 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4931 | if (is_hardware_watchpoint (b)) |
d983da9c | 4932 | { |
3a5c3e22 | 4933 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4934 | |
3a5c3e22 | 4935 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4936 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4937 | { |
3a5c3e22 | 4938 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4939 | { |
3a5c3e22 PA |
4940 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4941 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4942 | |
4943 | if (newaddr == start) | |
4944 | { | |
3a5c3e22 | 4945 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4946 | break; |
4947 | } | |
4948 | } | |
4949 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4950 | else if (target_watchpoint_addr_within_range |
4951 | (current_inferior ()->top_target (), addr, loc->address, | |
4952 | loc->length)) | |
9c06b0b4 | 4953 | { |
3a5c3e22 | 4954 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4955 | break; |
4956 | } | |
4957 | } | |
d983da9c DJ |
4958 | } |
4959 | ||
4960 | return 1; | |
4961 | } | |
4962 | ||
bf469271 PA |
4963 | /* Possible return values for watchpoint_check. */ |
4964 | enum wp_check_result | |
4965 | { | |
4966 | /* The watchpoint has been deleted. */ | |
4967 | WP_DELETED = 1, | |
4968 | ||
4969 | /* The value has changed. */ | |
4970 | WP_VALUE_CHANGED = 2, | |
4971 | ||
4972 | /* The value has not changed. */ | |
4973 | WP_VALUE_NOT_CHANGED = 3, | |
4974 | ||
4975 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4976 | WP_IGNORE = 4, | |
4977 | }; | |
c906108c SS |
4978 | |
4979 | #define BP_TEMPFLAG 1 | |
4980 | #define BP_HARDWAREFLAG 2 | |
4981 | ||
4a64f543 | 4982 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4983 | changed. */ |
553e4c11 | 4984 | |
bf469271 | 4985 | static wp_check_result |
313f3b21 | 4986 | watchpoint_check (bpstat *bs) |
c906108c | 4987 | { |
3a5c3e22 | 4988 | struct watchpoint *b; |
c906108c SS |
4989 | struct frame_info *fr; |
4990 | int within_current_scope; | |
4991 | ||
f431efe5 | 4992 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4993 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4994 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4995 | |
f6bc2008 PA |
4996 | /* If this is a local watchpoint, we only want to check if the |
4997 | watchpoint frame is in scope if the current thread is the thread | |
4998 | that was used to create the watchpoint. */ | |
4999 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5000 | return WP_IGNORE; |
f6bc2008 | 5001 | |
c906108c SS |
5002 | if (b->exp_valid_block == NULL) |
5003 | within_current_scope = 1; | |
5004 | else | |
5005 | { | |
edb3359d DJ |
5006 | struct frame_info *frame = get_current_frame (); |
5007 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5008 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5009 | ||
c9cf6e20 | 5010 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5011 | still in the function but the stack frame has already been |
5012 | invalidated. Since we can't rely on the values of local | |
5013 | variables after the stack has been destroyed, we are treating | |
5014 | the watchpoint in that state as `not changed' without further | |
5015 | checking. Don't mark watchpoints as changed if the current | |
5016 | frame is in an epilogue - even if they are in some other | |
5017 | frame, our view of the stack is likely to be wrong and | |
5018 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5019 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5020 | return WP_IGNORE; |
a0f49112 | 5021 | |
101dcfbe | 5022 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5023 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5024 | |
5025 | /* If we've gotten confused in the unwinder, we might have | |
5026 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5027 | if (within_current_scope) |
5028 | { | |
5029 | struct symbol *function; | |
5030 | ||
5031 | function = get_frame_function (fr); | |
5032 | if (function == NULL | |
4aeddc50 | 5033 | || !contained_in (b->exp_valid_block, function->value_block ())) |
edb3359d DJ |
5034 | within_current_scope = 0; |
5035 | } | |
69fbadd5 | 5036 | |
edb3359d | 5037 | if (within_current_scope) |
c906108c SS |
5038 | /* If we end up stopping, the current frame will get selected |
5039 | in normal_stop. So this call to select_frame won't affect | |
5040 | the user. */ | |
0f7d239c | 5041 | select_frame (fr); |
c906108c | 5042 | } |
c5aa993b | 5043 | |
c906108c SS |
5044 | if (within_current_scope) |
5045 | { | |
4a64f543 | 5046 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
5047 | time before we return to the command level and call |
5048 | free_all_values. We can't call free_all_values because we | |
5049 | might be in the middle of evaluating a function call. */ | |
c906108c | 5050 | |
9c06b0b4 | 5051 | struct value *mark; |
fa4727a6 DJ |
5052 | struct value *new_val; |
5053 | ||
c1fc2657 | 5054 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5055 | /* Since we don't know the exact trigger address (from |
5056 | stopped_data_address), just tell the user we've triggered | |
5057 | a mask watchpoint. */ | |
5058 | return WP_VALUE_CHANGED; | |
5059 | ||
5060 | mark = value_mark (); | |
1eaebe02 | 5061 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 5062 | NULL, NULL, false); |
218d2fc6 | 5063 | |
bb9d5f81 PP |
5064 | if (b->val_bitsize != 0) |
5065 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5066 | ||
4a64f543 MS |
5067 | /* We use value_equal_contents instead of value_equal because |
5068 | the latter coerces an array to a pointer, thus comparing just | |
5069 | the address of the array instead of its contents. This is | |
5070 | not what we want. */ | |
fa4727a6 | 5071 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
5072 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
5073 | new_val))) | |
c906108c | 5074 | { |
c906108c | 5075 | bs->old_val = b->val; |
850645cf | 5076 | b->val = release_value (new_val); |
4c1d86d9 | 5077 | b->val_valid = true; |
850645cf TT |
5078 | if (new_val != NULL) |
5079 | value_free_to_mark (mark); | |
c906108c SS |
5080 | return WP_VALUE_CHANGED; |
5081 | } | |
5082 | else | |
5083 | { | |
60e1c644 | 5084 | /* Nothing changed. */ |
c906108c | 5085 | value_free_to_mark (mark); |
c906108c SS |
5086 | return WP_VALUE_NOT_CHANGED; |
5087 | } | |
5088 | } | |
5089 | else | |
5090 | { | |
5091 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
5092 | if we temporarily ignored the watchpoint, then when |
5093 | we reenter the block in which it is valid it contains | |
5094 | garbage (in the case of a function, it may have two | |
5095 | garbage values, one before and one after the prologue). | |
5096 | So we can't even detect the first assignment to it and | |
5097 | watch after that (since the garbage may or may not equal | |
5098 | the first value assigned). */ | |
348d480f | 5099 | /* We print all the stop information in |
c47614fe TT |
5100 | breakpointprint_it, but in this case, by the time we |
5101 | call breakpoint->print_it this bp will be deleted | |
348d480f PA |
5102 | already. So we have no choice but print the information |
5103 | here. */ | |
468afe6c | 5104 | |
0e454242 | 5105 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5106 | { |
468afe6c PA |
5107 | struct ui_out *uiout = current_uiout; |
5108 | ||
112e8700 SM |
5109 | if (uiout->is_mi_like_p ()) |
5110 | uiout->field_string | |
5111 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5112 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5113 | "left the block in\n" | |
5114 | "which its expression is valid.\n", | |
5115 | signed_field ("wpnum", b->number)); | |
468afe6c | 5116 | } |
4ce44c66 | 5117 | |
cdac0397 | 5118 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5119 | b->commands = NULL; |
d0fb5eae | 5120 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5121 | |
5122 | return WP_DELETED; | |
5123 | } | |
5124 | } | |
5125 | ||
18a18393 | 5126 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5127 | breakpoint location BL. This function does not check if we should |
5128 | stop, only if BL explains the stop. */ | |
5129 | ||
18a18393 | 5130 | static int |
6c95b8df | 5131 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5132 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5133 | const target_waitstatus &ws) |
18a18393 VP |
5134 | { |
5135 | struct breakpoint *b = bl->owner; | |
5136 | ||
348d480f | 5137 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5138 | gdb_assert (b != NULL); |
5139 | ||
c47614fe | 5140 | return b->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5141 | } |
5142 | ||
3a5c3e22 PA |
5143 | /* Determine if the watched values have actually changed, and we |
5144 | should stop. If not, set BS->stop to 0. */ | |
5145 | ||
18a18393 | 5146 | static void |
313f3b21 | 5147 | bpstat_check_watchpoint (bpstat *bs) |
18a18393 | 5148 | { |
2bdf28a0 | 5149 | const struct bp_location *bl; |
3a5c3e22 | 5150 | struct watchpoint *b; |
2bdf28a0 JK |
5151 | |
5152 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5153 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5154 | gdb_assert (bl != NULL); |
3a5c3e22 | 5155 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5156 | gdb_assert (b != NULL); |
18a18393 | 5157 | |
18a18393 | 5158 | { |
18a18393 VP |
5159 | int must_check_value = 0; |
5160 | ||
c1fc2657 | 5161 | if (b->type == bp_watchpoint) |
18a18393 VP |
5162 | /* For a software watchpoint, we must always check the |
5163 | watched value. */ | |
5164 | must_check_value = 1; | |
5165 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5166 | /* We have a hardware watchpoint (read, write, or access) | |
5167 | and the target earlier reported an address watched by | |
5168 | this watchpoint. */ | |
5169 | must_check_value = 1; | |
5170 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5171 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5172 | /* We were stopped by a hardware watchpoint, but the target could |
5173 | not report the data address. We must check the watchpoint's | |
5174 | value. Access and read watchpoints are out of luck; without | |
5175 | a data address, we can't figure it out. */ | |
5176 | must_check_value = 1; | |
3a5c3e22 | 5177 | |
18a18393 VP |
5178 | if (must_check_value) |
5179 | { | |
bf469271 PA |
5180 | wp_check_result e; |
5181 | ||
a70b8144 | 5182 | try |
bf469271 PA |
5183 | { |
5184 | e = watchpoint_check (bs); | |
5185 | } | |
230d2906 | 5186 | catch (const gdb_exception &ex) |
bf469271 PA |
5187 | { |
5188 | exception_fprintf (gdb_stderr, ex, | |
5189 | "Error evaluating expression " | |
5190 | "for watchpoint %d\n", | |
5191 | b->number); | |
5192 | ||
5193 | SWITCH_THRU_ALL_UIS () | |
5194 | { | |
6cb06a8c TT |
5195 | gdb_printf (_("Watchpoint %d deleted.\n"), |
5196 | b->number); | |
bf469271 PA |
5197 | } |
5198 | watchpoint_del_at_next_stop (b); | |
5199 | e = WP_DELETED; | |
5200 | } | |
bf469271 | 5201 | |
18a18393 VP |
5202 | switch (e) |
5203 | { | |
5204 | case WP_DELETED: | |
5205 | /* We've already printed what needs to be printed. */ | |
5206 | bs->print_it = print_it_done; | |
5207 | /* Stop. */ | |
5208 | break; | |
60e1c644 PA |
5209 | case WP_IGNORE: |
5210 | bs->print_it = print_it_noop; | |
5211 | bs->stop = 0; | |
5212 | break; | |
18a18393 | 5213 | case WP_VALUE_CHANGED: |
c1fc2657 | 5214 | if (b->type == bp_read_watchpoint) |
18a18393 | 5215 | { |
85d721b8 PA |
5216 | /* There are two cases to consider here: |
5217 | ||
4a64f543 | 5218 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5219 | In that case, trust the target, and always report |
5220 | the watchpoint hit to the user. Even though | |
5221 | reads don't cause value changes, the value may | |
5222 | have changed since the last time it was read, and | |
5223 | since we're not trapping writes, we will not see | |
5224 | those, and as such we should ignore our notion of | |
5225 | old value. | |
5226 | ||
4a64f543 | 5227 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5228 | reads and writes. There are two ways this may |
5229 | happen: | |
5230 | ||
4a64f543 | 5231 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5232 | reads only, but can break on accesses (reads or |
5233 | writes), such as e.g., x86. We detect this case | |
5234 | at the time we try to insert read watchpoints. | |
5235 | ||
4a64f543 | 5236 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5237 | watchpoints, but, the user set an access or write |
5238 | watchpoint watching the same memory as this read | |
5239 | watchpoint. | |
5240 | ||
5241 | If we're watching memory writes as well as reads, | |
5242 | ignore watchpoint hits when we find that the | |
5243 | value hasn't changed, as reads don't cause | |
5244 | changes. This still gives false positives when | |
5245 | the program writes the same value to memory as | |
5246 | what there was already in memory (we will confuse | |
5247 | it for a read), but it's much better than | |
5248 | nothing. */ | |
5249 | ||
5250 | int other_write_watchpoint = 0; | |
5251 | ||
5252 | if (bl->watchpoint_type == hw_read) | |
5253 | { | |
43892fdf | 5254 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5255 | if (other_b->type == bp_hardware_watchpoint |
5256 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5257 | { |
3a5c3e22 PA |
5258 | struct watchpoint *other_w = |
5259 | (struct watchpoint *) other_b; | |
5260 | ||
5261 | if (other_w->watchpoint_triggered | |
5262 | == watch_triggered_yes) | |
5263 | { | |
5264 | other_write_watchpoint = 1; | |
5265 | break; | |
5266 | } | |
85d721b8 PA |
5267 | } |
5268 | } | |
5269 | ||
5270 | if (other_write_watchpoint | |
5271 | || bl->watchpoint_type == hw_access) | |
5272 | { | |
5273 | /* We're watching the same memory for writes, | |
5274 | and the value changed since the last time we | |
5275 | updated it, so this trap must be for a write. | |
5276 | Ignore it. */ | |
5277 | bs->print_it = print_it_noop; | |
5278 | bs->stop = 0; | |
5279 | } | |
18a18393 VP |
5280 | } |
5281 | break; | |
5282 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5283 | if (b->type == bp_hardware_watchpoint |
5284 | || b->type == bp_watchpoint) | |
18a18393 VP |
5285 | { |
5286 | /* Don't stop: write watchpoints shouldn't fire if | |
5287 | the value hasn't changed. */ | |
5288 | bs->print_it = print_it_noop; | |
5289 | bs->stop = 0; | |
5290 | } | |
5291 | /* Stop. */ | |
5292 | break; | |
5293 | default: | |
5294 | /* Can't happen. */ | |
18a18393 VP |
5295 | break; |
5296 | } | |
5297 | } | |
5298 | else /* must_check_value == 0 */ | |
5299 | { | |
5300 | /* This is a case where some watchpoint(s) triggered, but | |
5301 | not at the address of this watchpoint, or else no | |
5302 | watchpoint triggered after all. So don't print | |
5303 | anything for this watchpoint. */ | |
5304 | bs->print_it = print_it_noop; | |
5305 | bs->stop = 0; | |
5306 | } | |
5307 | } | |
5308 | } | |
5309 | ||
7d4df6a4 DE |
5310 | /* For breakpoints that are currently marked as telling gdb to stop, |
5311 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5312 | of breakpoint referred to by BS. If we should not stop for this |
5313 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5314 | |
18a18393 | 5315 | static void |
313f3b21 | 5316 | bpstat_check_breakpoint_conditions (bpstat *bs, thread_info *thread) |
18a18393 | 5317 | { |
2bdf28a0 JK |
5318 | const struct bp_location *bl; |
5319 | struct breakpoint *b; | |
bf469271 PA |
5320 | /* Assume stop. */ |
5321 | bool condition_result = true; | |
7d4df6a4 DE |
5322 | struct expression *cond; |
5323 | ||
5324 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5325 | |
5326 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5327 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5328 | gdb_assert (bl != NULL); |
f431efe5 | 5329 | b = bs->breakpoint_at; |
2bdf28a0 | 5330 | gdb_assert (b != NULL); |
18a18393 | 5331 | |
b775012e LM |
5332 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5333 | need to do so again since GDB does not know if we stopped due to a | |
5334 | breakpoint or a single step breakpoint. */ | |
5335 | ||
18a18393 | 5336 | if (frame_id_p (b->frame_id) |
edb3359d | 5337 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5338 | { |
7d4df6a4 DE |
5339 | bs->stop = 0; |
5340 | return; | |
5341 | } | |
60e1c644 | 5342 | |
12ab52e9 PA |
5343 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5344 | evaluating the condition if this isn't the specified | |
5345 | thread/task. */ | |
00431a78 PA |
5346 | if ((b->thread != -1 && b->thread != thread->global_num) |
5347 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5348 | { |
5349 | bs->stop = 0; | |
5350 | return; | |
5351 | } | |
5352 | ||
6dddc817 DE |
5353 | /* Evaluate extension language breakpoints that have a "stop" method |
5354 | implemented. */ | |
5355 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5356 | |
7d4df6a4 DE |
5357 | if (is_watchpoint (b)) |
5358 | { | |
5359 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5360 | |
4d01a485 | 5361 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5362 | } |
5363 | else | |
4d01a485 | 5364 | cond = bl->cond.get (); |
60e1c644 | 5365 | |
7d4df6a4 DE |
5366 | if (cond && b->disposition != disp_del_at_next_stop) |
5367 | { | |
5368 | int within_current_scope = 1; | |
5369 | struct watchpoint * w; | |
60e1c644 | 5370 | |
7d4df6a4 DE |
5371 | /* We use value_mark and value_free_to_mark because it could |
5372 | be a long time before we return to the command level and | |
5373 | call free_all_values. We can't call free_all_values | |
5374 | because we might be in the middle of evaluating a | |
5375 | function call. */ | |
5376 | struct value *mark = value_mark (); | |
5377 | ||
5378 | if (is_watchpoint (b)) | |
5379 | w = (struct watchpoint *) b; | |
5380 | else | |
5381 | w = NULL; | |
5382 | ||
5383 | /* Need to select the frame, with all that implies so that | |
5384 | the conditions will have the right context. Because we | |
5385 | use the frame, we will not see an inlined function's | |
5386 | variables when we arrive at a breakpoint at the start | |
5387 | of the inlined function; the current frame will be the | |
5388 | call site. */ | |
5389 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5390 | select_frame (get_current_frame ()); | |
5391 | else | |
18a18393 | 5392 | { |
7d4df6a4 DE |
5393 | struct frame_info *frame; |
5394 | ||
5395 | /* For local watchpoint expressions, which particular | |
5396 | instance of a local is being watched matters, so we | |
5397 | keep track of the frame to evaluate the expression | |
5398 | in. To evaluate the condition however, it doesn't | |
5399 | really matter which instantiation of the function | |
5400 | where the condition makes sense triggers the | |
5401 | watchpoint. This allows an expression like "watch | |
5402 | global if q > 10" set in `func', catch writes to | |
5403 | global on all threads that call `func', or catch | |
5404 | writes on all recursive calls of `func' by a single | |
5405 | thread. We simply always evaluate the condition in | |
5406 | the innermost frame that's executing where it makes | |
5407 | sense to evaluate the condition. It seems | |
5408 | intuitive. */ | |
5409 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5410 | if (frame != NULL) | |
5411 | select_frame (frame); | |
5412 | else | |
5413 | within_current_scope = 0; | |
18a18393 | 5414 | } |
7d4df6a4 | 5415 | if (within_current_scope) |
bf469271 | 5416 | { |
a70b8144 | 5417 | try |
bf469271 PA |
5418 | { |
5419 | condition_result = breakpoint_cond_eval (cond); | |
5420 | } | |
230d2906 | 5421 | catch (const gdb_exception &ex) |
bf469271 PA |
5422 | { |
5423 | exception_fprintf (gdb_stderr, ex, | |
5424 | "Error in testing breakpoint condition:\n"); | |
5425 | } | |
bf469271 | 5426 | } |
7d4df6a4 | 5427 | else |
18a18393 | 5428 | { |
7d4df6a4 DE |
5429 | warning (_("Watchpoint condition cannot be tested " |
5430 | "in the current scope")); | |
5431 | /* If we failed to set the right context for this | |
5432 | watchpoint, unconditionally report it. */ | |
18a18393 | 5433 | } |
7d4df6a4 DE |
5434 | /* FIXME-someday, should give breakpoint #. */ |
5435 | value_free_to_mark (mark); | |
18a18393 | 5436 | } |
7d4df6a4 | 5437 | |
bf469271 | 5438 | if (cond && !condition_result) |
7d4df6a4 DE |
5439 | { |
5440 | bs->stop = 0; | |
5441 | } | |
7d4df6a4 DE |
5442 | else if (b->ignore_count > 0) |
5443 | { | |
5444 | b->ignore_count--; | |
5445 | bs->stop = 0; | |
5446 | /* Increase the hit count even though we don't stop. */ | |
5447 | ++(b->hit_count); | |
76727919 | 5448 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5449 | } |
18a18393 VP |
5450 | } |
5451 | ||
1cf4d951 PA |
5452 | /* Returns true if we need to track moribund locations of LOC's type |
5453 | on the current target. */ | |
5454 | ||
5455 | static int | |
5456 | need_moribund_for_location_type (struct bp_location *loc) | |
5457 | { | |
5458 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5459 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5460 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5461 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5462 | } | |
5463 | ||
ddfe970e | 5464 | /* See breakpoint.h. */ |
c906108c | 5465 | |
313f3b21 | 5466 | bpstat * |
ddfe970e | 5467 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5468 | const target_waitstatus &ws) |
c906108c | 5469 | { |
313f3b21 | 5470 | bpstat *bs_head = nullptr, **bs_link = &bs_head; |
c5aa993b | 5471 | |
43892fdf | 5472 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5473 | { |
1a853c52 | 5474 | if (!breakpoint_enabled (b)) |
429374b8 | 5475 | continue; |
a5606eee | 5476 | |
40cb8ca5 | 5477 | for (bp_location *bl : b->locations ()) |
429374b8 | 5478 | { |
4a64f543 MS |
5479 | /* For hardware watchpoints, we look only at the first |
5480 | location. The watchpoint_check function will work on the | |
5481 | entire expression, not the individual locations. For | |
5482 | read watchpoints, the watchpoints_triggered function has | |
5483 | checked all locations already. */ | |
429374b8 JK |
5484 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5485 | break; | |
18a18393 | 5486 | |
b5fa468f | 5487 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5488 | continue; |
c5aa993b | 5489 | |
09ac7c10 | 5490 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5491 | continue; |
c5aa993b | 5492 | |
4a64f543 MS |
5493 | /* Come here if it's a watchpoint, or if the break address |
5494 | matches. */ | |
c5aa993b | 5495 | |
313f3b21 | 5496 | bpstat *bs = new bpstat (bl, &bs_link); /* Alloc a bpstat to |
ddfe970e | 5497 | explain stop. */ |
c5aa993b | 5498 | |
f431efe5 PA |
5499 | /* Assume we stop. Should we find a watchpoint that is not |
5500 | actually triggered, or if the condition of the breakpoint | |
5501 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5502 | bs->stop = 1; |
5503 | bs->print = 1; | |
d983da9c | 5504 | |
f431efe5 PA |
5505 | /* If this is a scope breakpoint, mark the associated |
5506 | watchpoint as triggered so that we will handle the | |
5507 | out-of-scope event. We'll get to the watchpoint next | |
5508 | iteration. */ | |
d0fb5eae | 5509 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5510 | { |
5511 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5512 | ||
5513 | w->watchpoint_triggered = watch_triggered_yes; | |
5514 | } | |
f431efe5 PA |
5515 | } |
5516 | } | |
5517 | ||
7c16b83e | 5518 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5519 | if (!target_supports_stopped_by_sw_breakpoint () |
5520 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5521 | { |
1123588c | 5522 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5523 | { |
1cf4d951 PA |
5524 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5525 | && need_moribund_for_location_type (loc)) | |
5526 | { | |
313f3b21 | 5527 | bpstat *bs = new bpstat (loc, &bs_link); |
1cf4d951 PA |
5528 | /* For hits of moribund locations, we should just proceed. */ |
5529 | bs->stop = 0; | |
5530 | bs->print = 0; | |
5531 | bs->print_it = print_it_noop; | |
5532 | } | |
f431efe5 PA |
5533 | } |
5534 | } | |
5535 | ||
ddfe970e KS |
5536 | return bs_head; |
5537 | } | |
5538 | ||
5539 | /* See breakpoint.h. */ | |
5540 | ||
313f3b21 | 5541 | bpstat * |
ddfe970e | 5542 | bpstat_stop_status (const address_space *aspace, |
00431a78 | 5543 | CORE_ADDR bp_addr, thread_info *thread, |
c272a98c | 5544 | const target_waitstatus &ws, |
313f3b21 | 5545 | bpstat *stop_chain) |
ddfe970e KS |
5546 | { |
5547 | struct breakpoint *b = NULL; | |
5548 | /* First item of allocated bpstat's. */ | |
313f3b21 SM |
5549 | bpstat *bs_head = stop_chain; |
5550 | bpstat *bs; | |
ddfe970e KS |
5551 | int need_remove_insert; |
5552 | int removed_any; | |
5553 | ||
5554 | /* First, build the bpstat chain with locations that explain a | |
5555 | target stop, while being careful to not set the target running, | |
5556 | as that may invalidate locations (in particular watchpoint | |
5557 | locations are recreated). Resuming will happen here with | |
5558 | breakpoint conditions or watchpoint expressions that include | |
5559 | inferior function calls. */ | |
5560 | if (bs_head == NULL) | |
5561 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5562 | ||
edcc5120 TT |
5563 | /* A bit of special processing for shlib breakpoints. We need to |
5564 | process solib loading here, so that the lists of loaded and | |
5565 | unloaded libraries are correct before we handle "catch load" and | |
5566 | "catch unload". */ | |
5567 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5568 | { | |
5d268276 | 5569 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5570 | { |
5571 | handle_solib_event (); | |
5572 | break; | |
5573 | } | |
5574 | } | |
5575 | ||
f431efe5 PA |
5576 | /* Now go through the locations that caused the target to stop, and |
5577 | check whether we're interested in reporting this stop to higher | |
5578 | layers, or whether we should resume the target transparently. */ | |
5579 | ||
5580 | removed_any = 0; | |
5581 | ||
5760d0ab | 5582 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5583 | { |
5584 | if (!bs->stop) | |
5585 | continue; | |
5586 | ||
f431efe5 | 5587 | b = bs->breakpoint_at; |
c47614fe | 5588 | b->check_status (bs); |
348d480f | 5589 | if (bs->stop) |
28010a5d | 5590 | { |
00431a78 | 5591 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5592 | |
429374b8 JK |
5593 | if (bs->stop) |
5594 | { | |
5595 | ++(b->hit_count); | |
c906108c | 5596 | |
4a64f543 | 5597 | /* We will stop here. */ |
429374b8 JK |
5598 | if (b->disposition == disp_disable) |
5599 | { | |
816338b5 | 5600 | --(b->enable_count); |
1a853c52 | 5601 | if (b->enable_count <= 0) |
429374b8 | 5602 | b->enable_state = bp_disabled; |
f431efe5 | 5603 | removed_any = 1; |
429374b8 | 5604 | } |
bd7ccaa9 | 5605 | gdb::observers::breakpoint_modified.notify (b); |
429374b8 JK |
5606 | if (b->silent) |
5607 | bs->print = 0; | |
5608 | bs->commands = b->commands; | |
abf85f46 | 5609 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5610 | ? bs->commands.get () : NULL)) |
abf85f46 | 5611 | bs->print = 0; |
9d6e6e84 | 5612 | |
c47614fe | 5613 | b->after_condition_true (bs); |
429374b8 JK |
5614 | } |
5615 | ||
348d480f | 5616 | } |
a9b3a50f PA |
5617 | |
5618 | /* Print nothing for this entry if we don't stop or don't | |
5619 | print. */ | |
5620 | if (!bs->stop || !bs->print) | |
5621 | bs->print_it = print_it_noop; | |
429374b8 | 5622 | } |
876fa593 | 5623 | |
d983da9c DJ |
5624 | /* If we aren't stopping, the value of some hardware watchpoint may |
5625 | not have changed, but the intermediate memory locations we are | |
5626 | watching may have. Don't bother if we're stopping; this will get | |
5627 | done later. */ | |
d832cb68 | 5628 | need_remove_insert = 0; |
5760d0ab JK |
5629 | if (! bpstat_causes_stop (bs_head)) |
5630 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5631 | if (!bs->stop |
f431efe5 PA |
5632 | && bs->breakpoint_at |
5633 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5634 | { |
3a5c3e22 PA |
5635 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5636 | ||
5637 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5638 | need_remove_insert = 1; |
d983da9c DJ |
5639 | } |
5640 | ||
d832cb68 | 5641 | if (need_remove_insert) |
44702360 | 5642 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5643 | else if (removed_any) |
44702360 | 5644 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5645 | |
5760d0ab | 5646 | return bs_head; |
c906108c | 5647 | } |
628fe4e4 | 5648 | |
d37e0847 PA |
5649 | /* See breakpoint.h. */ |
5650 | ||
5651 | bpstat * | |
5652 | bpstat_stop_status_nowatch (const address_space *aspace, CORE_ADDR bp_addr, | |
5653 | thread_info *thread, const target_waitstatus &ws) | |
5654 | { | |
5655 | gdb_assert (!target_stopped_by_watchpoint ()); | |
5656 | ||
5657 | /* Clear all watchpoints' 'watchpoint_triggered' value from a | |
5658 | previous stop to avoid confusing bpstat_stop_status. */ | |
5659 | watchpoints_triggered (ws); | |
5660 | ||
5661 | return bpstat_stop_status (aspace, bp_addr, thread, ws); | |
5662 | } | |
5663 | ||
628fe4e4 | 5664 | static void |
61c26be8 | 5665 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5666 | { |
628fe4e4 JK |
5667 | struct gdbarch *gdbarch; |
5668 | ||
1eb8556f | 5669 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5670 | |
628fe4e4 JK |
5671 | /* Switch terminal for any messages produced by |
5672 | breakpoint_re_set. */ | |
223ffa71 | 5673 | target_terminal::ours_for_output (); |
628fe4e4 | 5674 | |
61c26be8 MS |
5675 | gdbarch = get_frame_arch (get_current_frame ()); |
5676 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5677 | thus it is expected that its objectfile can be found through | |
5678 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5679 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5680 | function needs to be updated too. */ | |
5681 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5682 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5683 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5684 | |
223ffa71 | 5685 | target_terminal::inferior (); |
628fe4e4 JK |
5686 | } |
5687 | ||
5688 | /* Prepare WHAT final decision for infrun. */ | |
5689 | ||
5690 | /* Decide what infrun needs to do with this bpstat. */ | |
5691 | ||
c906108c | 5692 | struct bpstat_what |
313f3b21 | 5693 | bpstat_what (bpstat *bs_head) |
c906108c | 5694 | { |
c906108c | 5695 | struct bpstat_what retval; |
313f3b21 | 5696 | bpstat *bs; |
c906108c | 5697 | |
628fe4e4 | 5698 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5699 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5700 | retval.is_longjmp = false; |
628fe4e4 | 5701 | |
0e30163f | 5702 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5703 | { |
628fe4e4 JK |
5704 | /* Extract this BS's action. After processing each BS, we check |
5705 | if its action overrides all we've seem so far. */ | |
5706 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5707 | enum bptype bptype; | |
5708 | ||
c906108c | 5709 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5710 | { |
5711 | /* I suspect this can happen if it was a momentary | |
5712 | breakpoint which has since been deleted. */ | |
5713 | bptype = bp_none; | |
5714 | } | |
20874c92 | 5715 | else |
f431efe5 | 5716 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5717 | |
5718 | switch (bptype) | |
c906108c SS |
5719 | { |
5720 | case bp_none: | |
628fe4e4 | 5721 | break; |
c906108c SS |
5722 | case bp_breakpoint: |
5723 | case bp_hardware_breakpoint: | |
7c16b83e | 5724 | case bp_single_step: |
c906108c SS |
5725 | case bp_until: |
5726 | case bp_finish: | |
a9b3a50f | 5727 | case bp_shlib_event: |
c906108c SS |
5728 | if (bs->stop) |
5729 | { | |
5730 | if (bs->print) | |
628fe4e4 | 5731 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5732 | else |
628fe4e4 | 5733 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5734 | } |
5735 | else | |
628fe4e4 | 5736 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5737 | break; |
5738 | case bp_watchpoint: | |
5739 | case bp_hardware_watchpoint: | |
5740 | case bp_read_watchpoint: | |
5741 | case bp_access_watchpoint: | |
5742 | if (bs->stop) | |
5743 | { | |
5744 | if (bs->print) | |
628fe4e4 | 5745 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5746 | else |
628fe4e4 | 5747 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5748 | } |
5749 | else | |
628fe4e4 JK |
5750 | { |
5751 | /* There was a watchpoint, but we're not stopping. | |
5752 | This requires no further action. */ | |
5753 | } | |
c906108c SS |
5754 | break; |
5755 | case bp_longjmp: | |
e2e4d78b | 5756 | case bp_longjmp_call_dummy: |
186c406b | 5757 | case bp_exception: |
0a39bb32 PA |
5758 | if (bs->stop) |
5759 | { | |
5760 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5761 | retval.is_longjmp = bptype != bp_exception; | |
5762 | } | |
5763 | else | |
5764 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5765 | break; |
5766 | case bp_longjmp_resume: | |
186c406b | 5767 | case bp_exception_resume: |
0a39bb32 PA |
5768 | if (bs->stop) |
5769 | { | |
5770 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5771 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5772 | } | |
5773 | else | |
5774 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5775 | break; |
5776 | case bp_step_resume: | |
5777 | if (bs->stop) | |
628fe4e4 JK |
5778 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5779 | else | |
c906108c | 5780 | { |
628fe4e4 JK |
5781 | /* It is for the wrong frame. */ |
5782 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5783 | } |
c906108c | 5784 | break; |
2c03e5be PA |
5785 | case bp_hp_step_resume: |
5786 | if (bs->stop) | |
5787 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5788 | else | |
5789 | { | |
5790 | /* It is for the wrong frame. */ | |
5791 | this_action = BPSTAT_WHAT_SINGLE; | |
5792 | } | |
5793 | break; | |
c906108c | 5794 | case bp_watchpoint_scope: |
c4093a6a | 5795 | case bp_thread_event: |
1900040c | 5796 | case bp_overlay_event: |
0fd8e87f | 5797 | case bp_longjmp_master: |
aa7d318d | 5798 | case bp_std_terminate_master: |
186c406b | 5799 | case bp_exception_master: |
628fe4e4 | 5800 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5801 | break; |
ce78b96d | 5802 | case bp_catchpoint: |
c5aa993b JM |
5803 | if (bs->stop) |
5804 | { | |
5805 | if (bs->print) | |
628fe4e4 | 5806 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5807 | else |
628fe4e4 | 5808 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5809 | } |
5810 | else | |
628fe4e4 | 5811 | { |
cb1e4e32 PA |
5812 | /* Some catchpoints are implemented with breakpoints. |
5813 | For those, we need to step over the breakpoint. */ | |
5814 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5815 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5816 | } |
5817 | break; | |
628fe4e4 | 5818 | case bp_jit_event: |
628fe4e4 | 5819 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5820 | break; |
c906108c | 5821 | case bp_call_dummy: |
53a5351d JM |
5822 | /* Make sure the action is stop (silent or noisy), |
5823 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5824 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5825 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5826 | break; |
5827 | case bp_std_terminate: | |
5828 | /* Make sure the action is stop (silent or noisy), | |
5829 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5830 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5831 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5832 | break; |
1042e4c0 | 5833 | case bp_tracepoint: |
7a697b8d | 5834 | case bp_fast_tracepoint: |
0fb4aa4b | 5835 | case bp_static_tracepoint: |
7b572efb | 5836 | case bp_static_marker_tracepoint: |
1042e4c0 SS |
5837 | /* Tracepoint hits should not be reported back to GDB, and |
5838 | if one got through somehow, it should have been filtered | |
5839 | out already. */ | |
5840 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5841 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5842 | break; |
5843 | case bp_gnu_ifunc_resolver: | |
5844 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5845 | this_action = BPSTAT_WHAT_SINGLE; | |
5846 | break; | |
5847 | case bp_gnu_ifunc_resolver_return: | |
5848 | /* The breakpoint will be removed, execution will restart from the | |
5849 | PC of the former breakpoint. */ | |
5850 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5851 | break; | |
e7e0cddf SS |
5852 | |
5853 | case bp_dprintf: | |
a11cfd87 HZ |
5854 | if (bs->stop) |
5855 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5856 | else | |
5857 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5858 | break; |
5859 | ||
628fe4e4 JK |
5860 | default: |
5861 | internal_error (__FILE__, __LINE__, | |
5862 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5863 | } |
628fe4e4 | 5864 | |
325fac50 | 5865 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5866 | } |
628fe4e4 | 5867 | |
243a9253 PA |
5868 | return retval; |
5869 | } | |
628fe4e4 | 5870 | |
243a9253 | 5871 | void |
313f3b21 | 5872 | bpstat_run_callbacks (bpstat *bs_head) |
243a9253 | 5873 | { |
313f3b21 | 5874 | bpstat *bs; |
628fe4e4 | 5875 | |
0e30163f JK |
5876 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5877 | { | |
5878 | struct breakpoint *b = bs->breakpoint_at; | |
5879 | ||
5880 | if (b == NULL) | |
5881 | continue; | |
5882 | switch (b->type) | |
5883 | { | |
243a9253 | 5884 | case bp_jit_event: |
61c26be8 | 5885 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5886 | break; |
0e30163f JK |
5887 | case bp_gnu_ifunc_resolver: |
5888 | gnu_ifunc_resolver_stop (b); | |
5889 | break; | |
5890 | case bp_gnu_ifunc_resolver_return: | |
5891 | gnu_ifunc_resolver_return_stop (b); | |
5892 | break; | |
5893 | } | |
5894 | } | |
c906108c SS |
5895 | } |
5896 | ||
4c462cb0 | 5897 | /* See breakpoint.h. */ |
c906108c | 5898 | |
4c462cb0 SM |
5899 | bool |
5900 | bpstat_should_step () | |
c906108c | 5901 | { |
43892fdf | 5902 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 5903 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 5904 | return true; |
43892fdf | 5905 | |
4c462cb0 | 5906 | return false; |
c906108c SS |
5907 | } |
5908 | ||
4c462cb0 SM |
5909 | /* See breakpoint.h. */ |
5910 | ||
5911 | bool | |
313f3b21 | 5912 | bpstat_causes_stop (bpstat *bs) |
67822962 PA |
5913 | { |
5914 | for (; bs != NULL; bs = bs->next) | |
5915 | if (bs->stop) | |
4c462cb0 | 5916 | return true; |
67822962 | 5917 | |
4c462cb0 | 5918 | return false; |
67822962 PA |
5919 | } |
5920 | ||
c906108c | 5921 | \f |
c5aa993b | 5922 | |
6c92c339 | 5923 | /* Compute a number of spaces suitable to indent the next line |
170b53b2 UW |
5924 | so it starts at the position corresponding to the table column |
5925 | named COL_NAME in the currently active table of UIOUT. */ | |
5926 | ||
6c92c339 | 5927 | static int |
170b53b2 UW |
5928 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) |
5929 | { | |
170b53b2 | 5930 | int i, total_width, width, align; |
c5209615 | 5931 | const char *text; |
170b53b2 UW |
5932 | |
5933 | total_width = 0; | |
112e8700 | 5934 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5935 | { |
5936 | if (strcmp (text, col_name) == 0) | |
6c92c339 | 5937 | return total_width; |
170b53b2 UW |
5938 | |
5939 | total_width += width + 1; | |
5940 | } | |
5941 | ||
6c92c339 | 5942 | return 0; |
170b53b2 UW |
5943 | } |
5944 | ||
b775012e LM |
5945 | /* Determine if the locations of this breakpoint will have their conditions |
5946 | evaluated by the target, host or a mix of both. Returns the following: | |
5947 | ||
5948 | "host": Host evals condition. | |
5949 | "host or target": Host or Target evals condition. | |
5950 | "target": Target evals condition. | |
5951 | */ | |
5952 | ||
5953 | static const char * | |
a67bcaba | 5954 | bp_condition_evaluator (const breakpoint *b) |
b775012e | 5955 | { |
b775012e LM |
5956 | char host_evals = 0; |
5957 | char target_evals = 0; | |
5958 | ||
5959 | if (!b) | |
5960 | return NULL; | |
5961 | ||
5962 | if (!is_breakpoint (b)) | |
5963 | return NULL; | |
5964 | ||
5965 | if (gdb_evaluates_breakpoint_condition_p () | |
5966 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5967 | return condition_evaluation_host; | |
5968 | ||
40cb8ca5 | 5969 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5970 | { |
5971 | if (bl->cond_bytecode) | |
5972 | target_evals++; | |
5973 | else | |
5974 | host_evals++; | |
5975 | } | |
5976 | ||
5977 | if (host_evals && target_evals) | |
5978 | return condition_evaluation_both; | |
5979 | else if (target_evals) | |
5980 | return condition_evaluation_target; | |
5981 | else | |
5982 | return condition_evaluation_host; | |
5983 | } | |
5984 | ||
5985 | /* Determine the breakpoint location's condition evaluator. This is | |
5986 | similar to bp_condition_evaluator, but for locations. */ | |
5987 | ||
5988 | static const char * | |
5989 | bp_location_condition_evaluator (struct bp_location *bl) | |
5990 | { | |
5991 | if (bl && !is_breakpoint (bl->owner)) | |
5992 | return NULL; | |
5993 | ||
5994 | if (gdb_evaluates_breakpoint_condition_p () | |
5995 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5996 | return condition_evaluation_host; | |
5997 | ||
5998 | if (bl && bl->cond_bytecode) | |
5999 | return condition_evaluation_target; | |
6000 | else | |
6001 | return condition_evaluation_host; | |
6002 | } | |
6003 | ||
859825b8 JK |
6004 | /* Print the LOC location out of the list of B->LOC locations. */ |
6005 | ||
170b53b2 | 6006 | static void |
a67bcaba | 6007 | print_breakpoint_location (const breakpoint *b, |
170b53b2 | 6008 | struct bp_location *loc) |
0d381245 | 6009 | { |
79a45e25 | 6010 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
6011 | |
6012 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 6013 | |
859825b8 JK |
6014 | if (loc != NULL && loc->shlib_disabled) |
6015 | loc = NULL; | |
6016 | ||
6c95b8df PA |
6017 | if (loc != NULL) |
6018 | set_current_program_space (loc->pspace); | |
6019 | ||
56435ebe | 6020 | if (b->display_canonical) |
d28cd78a | 6021 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 6022 | else if (loc && loc->symtab) |
0d381245 | 6023 | { |
4a27f119 KS |
6024 | const struct symbol *sym = loc->symbol; |
6025 | ||
0d381245 VP |
6026 | if (sym) |
6027 | { | |
112e8700 | 6028 | uiout->text ("in "); |
987012b8 | 6029 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 6030 | function_name_style.style ()); |
112e8700 SM |
6031 | uiout->text (" "); |
6032 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
6033 | uiout->text ("at "); | |
0d381245 | 6034 | } |
112e8700 | 6035 | uiout->field_string ("file", |
cbe56571 | 6036 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 6037 | file_name_style.style ()); |
112e8700 | 6038 | uiout->text (":"); |
05cba821 | 6039 | |
112e8700 SM |
6040 | if (uiout->is_mi_like_p ()) |
6041 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6042 | |
381befee | 6043 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 6044 | } |
859825b8 | 6045 | else if (loc) |
0d381245 | 6046 | { |
d7e74731 | 6047 | string_file stb; |
170b53b2 | 6048 | |
d7e74731 | 6049 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6050 | demangle, ""); |
112e8700 | 6051 | uiout->field_stream ("at", stb); |
0d381245 | 6052 | } |
859825b8 | 6053 | else |
f00aae0f | 6054 | { |
d28cd78a TT |
6055 | uiout->field_string ("pending", |
6056 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
6057 | /* If extra_string is available, it could be holding a condition |
6058 | or dprintf arguments. In either case, make sure it is printed, | |
6059 | too, but only for non-MI streams. */ | |
112e8700 | 6060 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6061 | { |
6062 | if (b->type == bp_dprintf) | |
112e8700 | 6063 | uiout->text (","); |
f00aae0f | 6064 | else |
112e8700 | 6065 | uiout->text (" "); |
6f781ee3 | 6066 | uiout->text (b->extra_string.get ()); |
f00aae0f KS |
6067 | } |
6068 | } | |
6c95b8df | 6069 | |
b775012e LM |
6070 | if (loc && is_breakpoint (b) |
6071 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6072 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6073 | { | |
112e8700 SM |
6074 | uiout->text (" ("); |
6075 | uiout->field_string ("evaluated-by", | |
b775012e | 6076 | bp_location_condition_evaluator (loc)); |
112e8700 | 6077 | uiout->text (")"); |
b775012e | 6078 | } |
0d381245 VP |
6079 | } |
6080 | ||
269b11a2 PA |
6081 | static const char * |
6082 | bptype_string (enum bptype type) | |
c906108c | 6083 | { |
c4093a6a JM |
6084 | struct ep_type_description |
6085 | { | |
6086 | enum bptype type; | |
a121b7c1 | 6087 | const char *description; |
c4093a6a JM |
6088 | }; |
6089 | static struct ep_type_description bptypes[] = | |
c906108c | 6090 | { |
c5aa993b JM |
6091 | {bp_none, "?deleted?"}, |
6092 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6093 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6094 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6095 | {bp_until, "until"}, |
6096 | {bp_finish, "finish"}, | |
6097 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6098 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6099 | {bp_read_watchpoint, "read watchpoint"}, |
6100 | {bp_access_watchpoint, "acc watchpoint"}, | |
6101 | {bp_longjmp, "longjmp"}, | |
6102 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6103 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6104 | {bp_exception, "exception"}, |
6105 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6106 | {bp_step_resume, "step resume"}, |
2c03e5be | 6107 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6108 | {bp_watchpoint_scope, "watchpoint scope"}, |
6109 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6110 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6111 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6112 | {bp_thread_event, "thread events"}, |
1900040c | 6113 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6114 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6115 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6116 | {bp_exception_master, "exception master"}, |
ce78b96d | 6117 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6118 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6119 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6120 | {bp_static_tracepoint, "static tracepoint"}, |
7b572efb | 6121 | {bp_static_marker_tracepoint, "static marker tracepoint"}, |
e7e0cddf | 6122 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6123 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6124 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6125 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6126 | }; |
269b11a2 PA |
6127 | |
6128 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6129 | || ((int) type != bptypes[(int) type].type)) | |
6130 | internal_error (__FILE__, __LINE__, | |
6131 | _("bptypes table does not describe type #%d."), | |
6132 | (int) type); | |
6133 | ||
6134 | return bptypes[(int) type].description; | |
6135 | } | |
6136 | ||
998580f1 MK |
6137 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6138 | For CLI, prefix the list with the string 'inf'. */ | |
6139 | ||
6140 | static void | |
6141 | output_thread_groups (struct ui_out *uiout, | |
6142 | const char *field_name, | |
5c632425 | 6143 | const std::vector<int> &inf_nums, |
998580f1 MK |
6144 | int mi_only) |
6145 | { | |
112e8700 | 6146 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6147 | |
6148 | /* For backward compatibility, don't display inferiors in CLI unless | |
6149 | there are several. Always display them for MI. */ | |
6150 | if (!is_mi && mi_only) | |
6151 | return; | |
6152 | ||
10f489e5 | 6153 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6154 | |
5c632425 | 6155 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6156 | { |
6157 | if (is_mi) | |
6158 | { | |
6159 | char mi_group[10]; | |
6160 | ||
5c632425 | 6161 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6162 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6163 | } |
6164 | else | |
6165 | { | |
6166 | if (i == 0) | |
112e8700 | 6167 | uiout->text (" inf "); |
998580f1 | 6168 | else |
112e8700 | 6169 | uiout->text (", "); |
998580f1 | 6170 | |
5c632425 | 6171 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6172 | } |
6173 | } | |
998580f1 MK |
6174 | } |
6175 | ||
a38118e5 PA |
6176 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6177 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6178 | info breakpoints" show the software breakpoint locations of | |
6179 | catchpoints, which are considered internal implementation | |
c01e038b TT |
6180 | detail. Returns true if RAW_LOC is false and if the breakpoint's |
6181 | print_one method did something; false otherwise. */ | |
269b11a2 | 6182 | |
c01e038b | 6183 | static bool |
269b11a2 PA |
6184 | print_one_breakpoint_location (struct breakpoint *b, |
6185 | struct bp_location *loc, | |
6186 | int loc_number, | |
6187 | struct bp_location **last_loc, | |
a38118e5 | 6188 | int allflag, bool raw_loc) |
269b11a2 PA |
6189 | { |
6190 | struct command_line *l; | |
c2c6d25f | 6191 | static char bpenables[] = "nynny"; |
c906108c | 6192 | |
79a45e25 | 6193 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6194 | int header_of_multiple = 0; |
6195 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6196 | struct value_print_options opts; |
6197 | ||
6198 | get_user_print_options (&opts); | |
0d381245 VP |
6199 | |
6200 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6201 | /* See comment in print_one_breakpoint concerning treatment of |
6202 | breakpoints with single disabled location. */ | |
0d381245 VP |
6203 | if (loc == NULL |
6204 | && (b->loc != NULL | |
b5fa468f TBA |
6205 | && (b->loc->next != NULL |
6206 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6207 | header_of_multiple = 1; |
6208 | if (loc == NULL) | |
6209 | loc = b->loc; | |
6210 | ||
c4093a6a JM |
6211 | annotate_record (); |
6212 | ||
6213 | /* 1 */ | |
6214 | annotate_field (0); | |
0d381245 | 6215 | if (part_of_multiple) |
528e1572 | 6216 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6217 | else |
381befee | 6218 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6219 | |
6220 | /* 2 */ | |
6221 | annotate_field (1); | |
0d381245 | 6222 | if (part_of_multiple) |
112e8700 | 6223 | uiout->field_skip ("type"); |
269b11a2 | 6224 | else |
112e8700 | 6225 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6226 | |
6227 | /* 3 */ | |
6228 | annotate_field (2); | |
0d381245 | 6229 | if (part_of_multiple) |
112e8700 | 6230 | uiout->field_skip ("disp"); |
0d381245 | 6231 | else |
112e8700 | 6232 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6233 | |
c4093a6a JM |
6234 | /* 4 */ |
6235 | annotate_field (3); | |
85c88e2a TBA |
6236 | /* For locations that are disabled because of an invalid condition, |
6237 | display "N*" on CLI, where "*" refers to a footnote below the | |
6238 | table. For MI, simply display a "N" without a footnote. */ | |
6239 | const char *N = (uiout->is_mi_like_p ()) ? "N" : "N*"; | |
0d381245 | 6240 | if (part_of_multiple) |
85c88e2a | 6241 | uiout->field_string ("enabled", (loc->disabled_by_cond ? N |
b5fa468f | 6242 | : (loc->enabled ? "y" : "n"))); |
0d381245 | 6243 | else |
112e8700 | 6244 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6245 | |
c4093a6a | 6246 | /* 5 and 6 */ |
c01e038b | 6247 | bool result = false; |
c47614fe | 6248 | if (!raw_loc && b->print_one (last_loc)) |
c01e038b | 6249 | result = true; |
3086aeae | 6250 | else |
a38118e5 PA |
6251 | { |
6252 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6253 | { |
6254 | struct watchpoint *w = (struct watchpoint *) b; | |
6255 | ||
6256 | /* Field 4, the address, is omitted (which makes the columns | |
6257 | not line up too nicely with the headers, but the effect | |
6258 | is relatively readable). */ | |
6259 | if (opts.addressprint) | |
112e8700 | 6260 | uiout->field_skip ("addr"); |
3a5c3e22 | 6261 | annotate_field (5); |
a4c50be3 | 6262 | uiout->field_string ("what", w->exp_string.get ()); |
3a5c3e22 | 6263 | } |
f06f1252 TT |
6264 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6265 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6266 | { |
6267 | if (opts.addressprint) | |
6268 | { | |
6269 | annotate_field (4); | |
6270 | if (header_of_multiple) | |
7f6aba03 TT |
6271 | uiout->field_string ("addr", "<MULTIPLE>", |
6272 | metadata_style.style ()); | |
a38118e5 | 6273 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6274 | uiout->field_string ("addr", "<PENDING>", |
6275 | metadata_style.style ()); | |
a38118e5 PA |
6276 | else |
6277 | uiout->field_core_addr ("addr", | |
6278 | loc->gdbarch, loc->address); | |
6279 | } | |
6280 | annotate_field (5); | |
6281 | if (!header_of_multiple) | |
6282 | print_breakpoint_location (b, loc); | |
6283 | if (b->loc) | |
6284 | *last_loc = b->loc; | |
6285 | } | |
6286 | } | |
6c95b8df | 6287 | |
998580f1 | 6288 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6289 | { |
5c632425 | 6290 | std::vector<int> inf_nums; |
998580f1 | 6291 | int mi_only = 1; |
6c95b8df | 6292 | |
08036331 | 6293 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6294 | { |
6295 | if (inf->pspace == loc->pspace) | |
5c632425 | 6296 | inf_nums.push_back (inf->num); |
6c95b8df | 6297 | } |
998580f1 | 6298 | |
dda83cd7 | 6299 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6300 | there are several. Always display for MI. */ |
6301 | if (allflag | |
6302 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6303 | && (program_spaces.size () > 1 |
998580f1 MK |
6304 | || number_of_inferiors () > 1) |
6305 | /* LOC is for existing B, it cannot be in | |
6306 | moribund_locations and thus having NULL OWNER. */ | |
6307 | && loc->owner->type != bp_catchpoint)) | |
6308 | mi_only = 0; | |
5c632425 | 6309 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6310 | } |
6311 | ||
4a306c9a | 6312 | if (!part_of_multiple) |
c4093a6a | 6313 | { |
4a306c9a JB |
6314 | if (b->thread != -1) |
6315 | { | |
6316 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6317 | "stop only in" line a little further down. */ |
112e8700 | 6318 | uiout->text (" thread "); |
381befee | 6319 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6320 | } |
6321 | else if (b->task != 0) | |
6322 | { | |
112e8700 | 6323 | uiout->text (" task "); |
381befee | 6324 | uiout->field_signed ("task", b->task); |
4a306c9a | 6325 | } |
c4093a6a | 6326 | } |
f1310107 | 6327 | |
112e8700 | 6328 | uiout->text ("\n"); |
f1310107 | 6329 | |
348d480f | 6330 | if (!part_of_multiple) |
c47614fe | 6331 | b->print_one_detail (uiout); |
f1310107 | 6332 | |
0d381245 | 6333 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6334 | { |
6335 | annotate_field (6); | |
112e8700 | 6336 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6337 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6338 | the frame ID. */ |
112e8700 | 6339 | uiout->field_core_addr ("frame", |
5af949e3 | 6340 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6341 | uiout->text ("\n"); |
c4093a6a JM |
6342 | } |
6343 | ||
28010a5d | 6344 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6345 | { |
6346 | annotate_field (7); | |
d77f58be | 6347 | if (is_tracepoint (b)) |
112e8700 | 6348 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6349 | else |
112e8700 | 6350 | uiout->text ("\tstop only if "); |
6f781ee3 | 6351 | uiout->field_string ("cond", b->cond_string.get ()); |
b775012e LM |
6352 | |
6353 | /* Print whether the target is doing the breakpoint's condition | |
6354 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6355 | if (is_breakpoint (b) | |
6356 | && breakpoint_condition_evaluation_mode () | |
6357 | == condition_evaluation_target) | |
6358 | { | |
6a831f06 PA |
6359 | uiout->message (" (%pF evals)", |
6360 | string_field ("evaluated-by", | |
6361 | bp_condition_evaluator (b))); | |
b775012e | 6362 | } |
112e8700 | 6363 | uiout->text ("\n"); |
0101ce28 JJ |
6364 | } |
6365 | ||
0d381245 | 6366 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6367 | { |
4a64f543 | 6368 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6369 | uiout->text ("\tstop only in thread "); |
6370 | if (uiout->is_mi_like_p ()) | |
381befee | 6371 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6372 | else |
6373 | { | |
6374 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6375 | ||
112e8700 | 6376 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6377 | } |
112e8700 | 6378 | uiout->text ("\n"); |
c4093a6a JM |
6379 | } |
6380 | ||
556ec64d YQ |
6381 | if (!part_of_multiple) |
6382 | { | |
6383 | if (b->hit_count) | |
31f56a27 YQ |
6384 | { |
6385 | /* FIXME should make an annotation for this. */ | |
6386 | if (is_catchpoint (b)) | |
112e8700 | 6387 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6388 | else if (is_tracepoint (b)) |
112e8700 | 6389 | uiout->text ("\ttracepoint"); |
31f56a27 | 6390 | else |
112e8700 SM |
6391 | uiout->text ("\tbreakpoint"); |
6392 | uiout->text (" already hit "); | |
381befee | 6393 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6394 | if (b->hit_count == 1) |
112e8700 | 6395 | uiout->text (" time\n"); |
31f56a27 | 6396 | else |
112e8700 | 6397 | uiout->text (" times\n"); |
31f56a27 | 6398 | } |
556ec64d YQ |
6399 | else |
6400 | { | |
31f56a27 | 6401 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6402 | if (uiout->is_mi_like_p ()) |
381befee | 6403 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6404 | } |
6405 | } | |
8b93c638 | 6406 | |
0d381245 | 6407 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6408 | { |
6409 | annotate_field (8); | |
6a831f06 PA |
6410 | uiout->message ("\tignore next %pF hits\n", |
6411 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6412 | } |
059fb39f | 6413 | |
816338b5 SS |
6414 | /* Note that an enable count of 1 corresponds to "enable once" |
6415 | behavior, which is reported by the combination of enablement and | |
6416 | disposition, so we don't need to mention it here. */ | |
6417 | if (!part_of_multiple && b->enable_count > 1) | |
6418 | { | |
6419 | annotate_field (8); | |
112e8700 | 6420 | uiout->text ("\tdisable after "); |
816338b5 SS |
6421 | /* Tweak the wording to clarify that ignore and enable counts |
6422 | are distinct, and have additive effect. */ | |
6423 | if (b->ignore_count) | |
112e8700 | 6424 | uiout->text ("additional "); |
816338b5 | 6425 | else |
112e8700 | 6426 | uiout->text ("next "); |
381befee | 6427 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6428 | uiout->text (" hits\n"); |
816338b5 SS |
6429 | } |
6430 | ||
f196051f SS |
6431 | if (!part_of_multiple && is_tracepoint (b)) |
6432 | { | |
6433 | struct tracepoint *tp = (struct tracepoint *) b; | |
6434 | ||
6435 | if (tp->traceframe_usage) | |
6436 | { | |
112e8700 | 6437 | uiout->text ("\ttrace buffer usage "); |
381befee | 6438 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6439 | uiout->text (" bytes\n"); |
f196051f SS |
6440 | } |
6441 | } | |
d3ce09f5 | 6442 | |
d1b0a7bf | 6443 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6444 | if (!part_of_multiple && l) |
c4093a6a JM |
6445 | { |
6446 | annotate_field (9); | |
2e783024 | 6447 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6448 | print_command_lines (uiout, l, 4); |
c4093a6a | 6449 | } |
d24317b4 | 6450 | |
d9b3f62e | 6451 | if (is_tracepoint (b)) |
1042e4c0 | 6452 | { |
d9b3f62e PA |
6453 | struct tracepoint *t = (struct tracepoint *) b; |
6454 | ||
6455 | if (!part_of_multiple && t->pass_count) | |
6456 | { | |
6457 | annotate_field (10); | |
112e8700 | 6458 | uiout->text ("\tpass count "); |
381befee | 6459 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6460 | uiout->text (" \n"); |
d9b3f62e | 6461 | } |
f2a8bc8a YQ |
6462 | |
6463 | /* Don't display it when tracepoint or tracepoint location is | |
6464 | pending. */ | |
6465 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6466 | { | |
6467 | annotate_field (11); | |
6468 | ||
112e8700 SM |
6469 | if (uiout->is_mi_like_p ()) |
6470 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6471 | loc->inserted ? "y" : "n"); |
6472 | else | |
6473 | { | |
6474 | if (loc->inserted) | |
112e8700 | 6475 | uiout->text ("\t"); |
f2a8bc8a | 6476 | else |
112e8700 SM |
6477 | uiout->text ("\tnot "); |
6478 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6479 | } |
6480 | } | |
1042e4c0 SS |
6481 | } |
6482 | ||
112e8700 | 6483 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6484 | { |
3a5c3e22 PA |
6485 | if (is_watchpoint (b)) |
6486 | { | |
6487 | struct watchpoint *w = (struct watchpoint *) b; | |
6488 | ||
a4c50be3 | 6489 | uiout->field_string ("original-location", w->exp_string.get ()); |
3a5c3e22 | 6490 | } |
f00aae0f | 6491 | else if (b->location != NULL |
d28cd78a | 6492 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6493 | uiout->field_string ("original-location", |
d28cd78a | 6494 | event_location_to_string (b->location.get ())); |
d24317b4 | 6495 | } |
c01e038b TT |
6496 | |
6497 | return result; | |
c4093a6a | 6498 | } |
c5aa993b | 6499 | |
13674803 SM |
6500 | /* See breakpoint.h. */ |
6501 | ||
6502 | bool fix_multi_location_breakpoint_output_globally = false; | |
6503 | ||
0d381245 VP |
6504 | static void |
6505 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6506 | struct bp_location **last_loc, |
6c95b8df | 6507 | int allflag) |
0d381245 | 6508 | { |
79a45e25 | 6509 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6510 | bool use_fixed_output |
6511 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6512 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6513 | |
b4be1b06 | 6514 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
c01e038b TT |
6515 | bool printed = print_one_breakpoint_location (b, NULL, 0, last_loc, |
6516 | allflag, false); | |
8d3788bd | 6517 | |
b4be1b06 SM |
6518 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6519 | are outside. */ | |
6520 | if (!use_fixed_output) | |
6521 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6522 | |
6523 | /* If this breakpoint has custom print function, | |
6524 | it's already printed. Otherwise, print individual | |
6525 | locations, if any. */ | |
c01e038b | 6526 | if (!printed || allflag) |
0d381245 | 6527 | { |
4a64f543 MS |
6528 | /* If breakpoint has a single location that is disabled, we |
6529 | print it as if it had several locations, since otherwise it's | |
6530 | hard to represent "breakpoint enabled, location disabled" | |
6531 | situation. | |
6532 | ||
6533 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6534 | internally, that's not a property exposed to users. |
6535 | ||
6536 | Likewise, while catchpoints may be implemented with | |
6537 | breakpoints (e.g., catch throw), that's not a property | |
6538 | exposed to users. We do however display the internal | |
6539 | breakpoint locations with "maint info breakpoints". */ | |
6540 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6541 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6542 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6543 | && (allflag |
b5fa468f TBA |
6544 | || (b->loc && (b->loc->next |
6545 | || !b->loc->enabled | |
6546 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6547 | { |
b4be1b06 SM |
6548 | gdb::optional<ui_out_emit_list> locations_list; |
6549 | ||
6550 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6551 | MI record. For later versions, place breakpoint locations in a | |
6552 | list. */ | |
6553 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6554 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6555 | |
b4be1b06 | 6556 | int n = 1; |
40cb8ca5 | 6557 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6558 | { |
b4be1b06 | 6559 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6560 | print_one_breakpoint_location (b, loc, n, last_loc, |
6561 | allflag, allflag); | |
40cb8ca5 | 6562 | n++; |
8d3788bd | 6563 | } |
0d381245 VP |
6564 | } |
6565 | } | |
6566 | } | |
6567 | ||
a6d9a66e UW |
6568 | static int |
6569 | breakpoint_address_bits (struct breakpoint *b) | |
6570 | { | |
6571 | int print_address_bits = 0; | |
a6d9a66e | 6572 | |
c6d81124 PA |
6573 | /* Software watchpoints that aren't watching memory don't have an |
6574 | address to print. */ | |
6575 | if (is_no_memory_software_watchpoint (b)) | |
6576 | return 0; | |
6577 | ||
40cb8ca5 | 6578 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6579 | { |
c7437ca6 PA |
6580 | int addr_bit; |
6581 | ||
c7437ca6 | 6582 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6583 | if (addr_bit > print_address_bits) |
6584 | print_address_bits = addr_bit; | |
6585 | } | |
6586 | ||
6587 | return print_address_bits; | |
6588 | } | |
0d381245 | 6589 | |
65630365 | 6590 | /* See breakpoint.h. */ |
c5aa993b | 6591 | |
65630365 PA |
6592 | void |
6593 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6594 | { |
a6d9a66e | 6595 | struct bp_location *dummy_loc = NULL; |
65630365 | 6596 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6597 | } |
c5aa993b | 6598 | |
09d682a4 TT |
6599 | /* Return true if this breakpoint was set by the user, false if it is |
6600 | internal or momentary. */ | |
6601 | ||
6602 | int | |
6603 | user_breakpoint_p (struct breakpoint *b) | |
6604 | { | |
46c6471b | 6605 | return b->number > 0; |
09d682a4 TT |
6606 | } |
6607 | ||
93daf339 TT |
6608 | /* See breakpoint.h. */ |
6609 | ||
6610 | int | |
6611 | pending_breakpoint_p (struct breakpoint *b) | |
6612 | { | |
6613 | return b->loc == NULL; | |
6614 | } | |
6615 | ||
5c458ae8 SM |
6616 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6617 | ||
6618 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6619 | understood by number_or_range_parser. Only breakpoints included in this | |
6620 | list are then printed. | |
6621 | ||
6622 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6623 | ||
6624 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6625 | ones for which it returns true. | |
6626 | ||
6627 | Return the total number of breakpoints listed. */ | |
c906108c | 6628 | |
d77f58be | 6629 | static int |
5c458ae8 | 6630 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6631 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6632 | { |
a6d9a66e | 6633 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6634 | int nr_printable_breakpoints; |
79a45b7d | 6635 | struct value_print_options opts; |
a6d9a66e | 6636 | int print_address_bits = 0; |
269b11a2 | 6637 | int print_type_col_width = 14; |
79a45e25 | 6638 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6639 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6640 | |
79a45b7d TT |
6641 | get_user_print_options (&opts); |
6642 | ||
4a64f543 MS |
6643 | /* Compute the number of rows in the table, as well as the size |
6644 | required for address fields. */ | |
7f3b0473 | 6645 | nr_printable_breakpoints = 0; |
43892fdf | 6646 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6647 | { |
6648 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6649 | if (filter && !filter (b)) | |
6650 | continue; | |
6651 | ||
5c458ae8 | 6652 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6653 | accept. Skip the others. */ |
5c458ae8 | 6654 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6655 | { |
5c458ae8 | 6656 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6657 | continue; |
5c458ae8 | 6658 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6659 | continue; |
6660 | } | |
269b11a2 | 6661 | |
5c458ae8 | 6662 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6663 | { |
6664 | int addr_bit, type_len; | |
a6d9a66e | 6665 | |
e5a67952 MS |
6666 | addr_bit = breakpoint_address_bits (b); |
6667 | if (addr_bit > print_address_bits) | |
6668 | print_address_bits = addr_bit; | |
269b11a2 | 6669 | |
e5a67952 MS |
6670 | type_len = strlen (bptype_string (b->type)); |
6671 | if (type_len > print_type_col_width) | |
6672 | print_type_col_width = type_len; | |
6673 | ||
6674 | nr_printable_breakpoints++; | |
6675 | } | |
6676 | } | |
7f3b0473 | 6677 | |
4a2b031d TT |
6678 | { |
6679 | ui_out_emit_table table_emitter (uiout, | |
6680 | opts.addressprint ? 6 : 5, | |
6681 | nr_printable_breakpoints, | |
6682 | "BreakpointTable"); | |
6683 | ||
6684 | if (nr_printable_breakpoints > 0) | |
6685 | annotate_breakpoints_headers (); | |
6686 | if (nr_printable_breakpoints > 0) | |
6687 | annotate_field (0); | |
6688 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6689 | if (nr_printable_breakpoints > 0) | |
6690 | annotate_field (1); | |
6691 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6692 | if (nr_printable_breakpoints > 0) | |
6693 | annotate_field (2); | |
6694 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6695 | if (nr_printable_breakpoints > 0) | |
6696 | annotate_field (3); | |
6697 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6698 | if (opts.addressprint) | |
6699 | { | |
6700 | if (nr_printable_breakpoints > 0) | |
6701 | annotate_field (4); | |
6702 | if (print_address_bits <= 32) | |
6703 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6704 | else | |
6705 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6706 | } | |
6707 | if (nr_printable_breakpoints > 0) | |
6708 | annotate_field (5); | |
6709 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6710 | uiout->table_body (); | |
6711 | if (nr_printable_breakpoints > 0) | |
6712 | annotate_breakpoints_table (); | |
6713 | ||
43892fdf | 6714 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6715 | { |
6716 | QUIT; | |
6717 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6718 | if (filter && !filter (b)) | |
6719 | continue; | |
e5a67952 | 6720 | |
5c458ae8 | 6721 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6722 | accept. Skip the others. */ |
e5a67952 | 6723 | |
5c458ae8 | 6724 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6725 | { |
5c458ae8 | 6726 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6727 | { |
5c458ae8 | 6728 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6729 | continue; |
6730 | } | |
6731 | else /* all others */ | |
6732 | { | |
5c458ae8 | 6733 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6734 | continue; |
6735 | } | |
6736 | } | |
6737 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6738 | show_internal is set. */ |
6739 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6740 | { |
6741 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6742 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6743 | if (loc->disabled_by_cond) |
6744 | has_disabled_by_cond_location = true; | |
6745 | } | |
4a2b031d TT |
6746 | } |
6747 | } | |
698384cd | 6748 | |
7f3b0473 | 6749 | if (nr_printable_breakpoints == 0) |
c906108c | 6750 | { |
4a64f543 MS |
6751 | /* If there's a filter, let the caller decide how to report |
6752 | empty list. */ | |
d77f58be SS |
6753 | if (!filter) |
6754 | { | |
5c458ae8 | 6755 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6756 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6757 | else |
112e8700 | 6758 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6759 | bp_num_list); |
d77f58be | 6760 | } |
c906108c SS |
6761 | } |
6762 | else | |
c4093a6a | 6763 | { |
a6d9a66e UW |
6764 | if (last_loc && !server_command) |
6765 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6766 | |
85c88e2a | 6767 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6768 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6769 | "location.\n")); | |
c4093a6a | 6770 | } |
c906108c | 6771 | |
4a64f543 | 6772 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6773 | there have been breakpoints? */ |
c906108c | 6774 | annotate_breakpoints_table_end (); |
d77f58be SS |
6775 | |
6776 | return nr_printable_breakpoints; | |
c906108c SS |
6777 | } |
6778 | ||
ad443146 SS |
6779 | /* Display the value of default-collect in a way that is generally |
6780 | compatible with the breakpoint list. */ | |
6781 | ||
6782 | static void | |
6783 | default_collect_info (void) | |
6784 | { | |
79a45e25 PA |
6785 | struct ui_out *uiout = current_uiout; |
6786 | ||
ad443146 SS |
6787 | /* If it has no value (which is frequently the case), say nothing; a |
6788 | message like "No default-collect." gets in user's face when it's | |
6789 | not wanted. */ | |
e0700ba4 | 6790 | if (default_collect.empty ()) |
ad443146 SS |
6791 | return; |
6792 | ||
6793 | /* The following phrase lines up nicely with per-tracepoint collect | |
6794 | actions. */ | |
112e8700 SM |
6795 | uiout->text ("default collect "); |
6796 | uiout->field_string ("default-collect", default_collect); | |
6797 | uiout->text (" \n"); | |
ad443146 SS |
6798 | } |
6799 | ||
c906108c | 6800 | static void |
0b39b52e | 6801 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6802 | { |
5c458ae8 | 6803 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6804 | |
6805 | default_collect_info (); | |
d77f58be SS |
6806 | } |
6807 | ||
6808 | static void | |
1d12d88f | 6809 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6810 | { |
5c458ae8 | 6811 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6812 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6813 | |
6814 | if (num_printed == 0) | |
6815 | { | |
e5a67952 | 6816 | if (args == NULL || *args == '\0') |
112e8700 | 6817 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6818 | else |
112e8700 | 6819 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6820 | } |
c906108c SS |
6821 | } |
6822 | ||
7a292a7a | 6823 | static void |
4495129a | 6824 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6825 | { |
5c458ae8 | 6826 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6827 | |
6828 | default_collect_info (); | |
c906108c SS |
6829 | } |
6830 | ||
0d381245 | 6831 | static int |
714835d5 | 6832 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6833 | struct program_space *pspace, |
714835d5 | 6834 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6835 | { |
40cb8ca5 | 6836 | for (bp_location *bl : b->locations ()) |
0d381245 | 6837 | { |
6c95b8df PA |
6838 | if (bl->pspace == pspace |
6839 | && bl->address == pc | |
0d381245 VP |
6840 | && (!overlay_debugging || bl->section == section)) |
6841 | return 1; | |
6842 | } | |
6843 | return 0; | |
6844 | } | |
6845 | ||
672f9b60 | 6846 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6847 | concerns with logical breakpoints, so we match program spaces, not |
6848 | address spaces. */ | |
c906108c SS |
6849 | |
6850 | static void | |
6c95b8df PA |
6851 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6852 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6853 | struct obj_section *section, int thread) |
c906108c | 6854 | { |
52f0bd74 | 6855 | int others = 0; |
c906108c | 6856 | |
43892fdf | 6857 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6858 | others += (user_breakpoint_p (b) |
dda83cd7 | 6859 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6860 | |
c906108c SS |
6861 | if (others > 0) |
6862 | { | |
a3f17187 | 6863 | if (others == 1) |
6cb06a8c | 6864 | gdb_printf (_("Note: breakpoint ")); |
a3f17187 | 6865 | else /* if (others == ???) */ |
6cb06a8c | 6866 | gdb_printf (_("Note: breakpoints ")); |
43892fdf | 6867 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6868 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6869 | { |
6870 | others--; | |
6cb06a8c | 6871 | gdb_printf ("%d", b->number); |
0d381245 | 6872 | if (b->thread == -1 && thread != -1) |
6cb06a8c | 6873 | gdb_printf (" (all threads)"); |
0d381245 | 6874 | else if (b->thread != -1) |
6cb06a8c TT |
6875 | gdb_printf (" (thread %d)", b->thread); |
6876 | gdb_printf ("%s%s ", | |
6877 | ((b->enable_state == bp_disabled | |
6878 | || b->enable_state == bp_call_disabled) | |
6879 | ? " (disabled)" | |
6880 | : ""), | |
6881 | (others > 1) ? "," | |
6882 | : ((others == 1) ? " and" : "")); | |
0d381245 | 6883 | } |
6a831f06 PA |
6884 | current_uiout->message (_("also set at pc %ps.\n"), |
6885 | styled_string (address_style.style (), | |
6886 | paddress (gdbarch, pc))); | |
c906108c SS |
6887 | } |
6888 | } | |
6889 | \f | |
c906108c | 6890 | |
cb1e4e32 PA |
6891 | /* Return true iff it is meaningful to use the address member of LOC. |
6892 | For some breakpoint types, the locations' address members are | |
6893 | irrelevant and it makes no sense to attempt to compare them to | |
6894 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6895 | |
cb1e4e32 PA |
6896 | More specifically, software watchpoints and catchpoints that are |
6897 | not backed by breakpoints always have a zero valued location | |
6898 | address and we don't want to mark breakpoints of any of these types | |
6899 | to be a duplicate of an actual breakpoint location at address | |
6900 | zero. */ | |
e4f237da | 6901 | |
cb1e4e32 PA |
6902 | static bool |
6903 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6904 | { |
cb1e4e32 | 6905 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6906 | } |
6907 | ||
6908 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6909 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6910 | ||
6911 | static int | |
4a64f543 MS |
6912 | watchpoint_locations_match (struct bp_location *loc1, |
6913 | struct bp_location *loc2) | |
2d134ed3 | 6914 | { |
3a5c3e22 PA |
6915 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6916 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6917 | ||
6918 | /* Both of them must exist. */ | |
6919 | gdb_assert (w1 != NULL); | |
6920 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6921 | |
4a64f543 MS |
6922 | /* If the target can evaluate the condition expression in hardware, |
6923 | then we we need to insert both watchpoints even if they are at | |
6924 | the same place. Otherwise the watchpoint will only trigger when | |
6925 | the condition of whichever watchpoint was inserted evaluates to | |
6926 | true, not giving a chance for GDB to check the condition of the | |
6927 | other watchpoint. */ | |
3a5c3e22 | 6928 | if ((w1->cond_exp |
4a64f543 MS |
6929 | && target_can_accel_watchpoint_condition (loc1->address, |
6930 | loc1->length, | |
0cf6dd15 | 6931 | loc1->watchpoint_type, |
4d01a485 | 6932 | w1->cond_exp.get ())) |
3a5c3e22 | 6933 | || (w2->cond_exp |
4a64f543 MS |
6934 | && target_can_accel_watchpoint_condition (loc2->address, |
6935 | loc2->length, | |
0cf6dd15 | 6936 | loc2->watchpoint_type, |
4d01a485 | 6937 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6938 | return 0; |
6939 | ||
85d721b8 PA |
6940 | /* Note that this checks the owner's type, not the location's. In |
6941 | case the target does not support read watchpoints, but does | |
6942 | support access watchpoints, we'll have bp_read_watchpoint | |
6943 | watchpoints with hw_access locations. Those should be considered | |
6944 | duplicates of hw_read locations. The hw_read locations will | |
6945 | become hw_access locations later. */ | |
2d134ed3 PA |
6946 | return (loc1->owner->type == loc2->owner->type |
6947 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6948 | && loc1->address == loc2->address | |
6949 | && loc1->length == loc2->length); | |
e4f237da KB |
6950 | } |
6951 | ||
31e77af2 | 6952 | /* See breakpoint.h. */ |
6c95b8df | 6953 | |
31e77af2 | 6954 | int |
accd0bcd YQ |
6955 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6956 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6957 | { |
f5656ead | 6958 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6959 | || aspace1 == aspace2) |
6960 | && addr1 == addr2); | |
6961 | } | |
6962 | ||
f1310107 TJB |
6963 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6964 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6965 | matches ASPACE2. On targets that have global breakpoints, the address | |
6966 | space doesn't really matter. */ | |
6967 | ||
6968 | static int | |
accd0bcd YQ |
6969 | breakpoint_address_match_range (const address_space *aspace1, |
6970 | CORE_ADDR addr1, | |
6971 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6972 | CORE_ADDR addr2) |
6973 | { | |
f5656ead | 6974 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6975 | || aspace1 == aspace2) |
6976 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6977 | } | |
6978 | ||
6979 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6980 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6981 | matches the breakpoint's address space. On targets that have global | |
6982 | breakpoints, the address space doesn't really matter. */ | |
6983 | ||
6984 | static int | |
6985 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6986 | const address_space *aspace, |
f1310107 TJB |
6987 | CORE_ADDR addr) |
6988 | { | |
6989 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6990 | aspace, addr) | |
6991 | || (bl->length | |
6992 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6993 | bl->address, bl->length, | |
6994 | aspace, addr))); | |
6995 | } | |
6996 | ||
d35ae833 PA |
6997 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6998 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6999 | match happens only if ASPACE matches the breakpoint's address | |
7000 | space. On targets that have global breakpoints, the address space | |
7001 | doesn't really matter. */ | |
7002 | ||
7003 | static int | |
7004 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 7005 | const address_space *aspace, |
d35ae833 PA |
7006 | CORE_ADDR addr, int len) |
7007 | { | |
7008 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
7009 | || bl->pspace->aspace == aspace) | |
7010 | { | |
7011 | int bl_len = bl->length != 0 ? bl->length : 1; | |
7012 | ||
7013 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
7014 | return 1; | |
7015 | } | |
7016 | return 0; | |
7017 | } | |
7018 | ||
1e4d1764 YQ |
7019 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7020 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7021 | true, otherwise returns false. */ | |
7022 | ||
7023 | static int | |
7024 | tracepoint_locations_match (struct bp_location *loc1, | |
7025 | struct bp_location *loc2) | |
7026 | { | |
7027 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7028 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7029 | locations at the same address of different tracepoints are regarded as | |
7030 | different locations. */ | |
7031 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7032 | else | |
7033 | return 0; | |
7034 | } | |
7035 | ||
2d134ed3 | 7036 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 7037 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
7038 | the same location. If SW_HW_BPS_MATCH is true, then software |
7039 | breakpoint locations and hardware breakpoint locations match, | |
7040 | otherwise they don't. */ | |
2d134ed3 PA |
7041 | |
7042 | static int | |
7f32a4d5 PA |
7043 | breakpoint_locations_match (struct bp_location *loc1, |
7044 | struct bp_location *loc2, | |
7045 | bool sw_hw_bps_match) | |
2d134ed3 | 7046 | { |
2bdf28a0 JK |
7047 | int hw_point1, hw_point2; |
7048 | ||
7049 | /* Both of them must not be in moribund_locations. */ | |
7050 | gdb_assert (loc1->owner != NULL); | |
7051 | gdb_assert (loc2->owner != NULL); | |
7052 | ||
7053 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7054 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7055 | |
7056 | if (hw_point1 != hw_point2) | |
7057 | return 0; | |
7058 | else if (hw_point1) | |
7059 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7060 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7061 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7062 | else |
7f32a4d5 PA |
7063 | /* We compare bp_location.length in order to cover ranged |
7064 | breakpoints. Keep this in sync with | |
7065 | bp_location_is_less_than. */ | |
f1310107 TJB |
7066 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
7067 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 7068 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 7069 | && loc1->length == loc2->length); |
2d134ed3 PA |
7070 | } |
7071 | ||
76897487 KB |
7072 | static void |
7073 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 7074 | int bnum, int have_bnum) |
76897487 | 7075 | { |
f63fbe86 MS |
7076 | /* The longest string possibly returned by hex_string_custom |
7077 | is 50 chars. These must be at least that big for safety. */ | |
7078 | char astr1[64]; | |
7079 | char astr2[64]; | |
76897487 | 7080 | |
bb599908 PH |
7081 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7082 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7083 | if (have_bnum) |
8a3fe4f8 | 7084 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 7085 | bnum, astr1, astr2); |
76897487 | 7086 | else |
8a3fe4f8 | 7087 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7088 | } |
7089 | ||
4a64f543 MS |
7090 | /* Adjust a breakpoint's address to account for architectural |
7091 | constraints on breakpoint placement. Return the adjusted address. | |
7092 | Note: Very few targets require this kind of adjustment. For most | |
7093 | targets, this function is simply the identity function. */ | |
76897487 KB |
7094 | |
7095 | static CORE_ADDR | |
a6d9a66e UW |
7096 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7097 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7098 | { |
a0de8c21 YQ |
7099 | if (bptype == bp_watchpoint |
7100 | || bptype == bp_hardware_watchpoint | |
7101 | || bptype == bp_read_watchpoint | |
7102 | || bptype == bp_access_watchpoint | |
7103 | || bptype == bp_catchpoint) | |
88f7da05 KB |
7104 | { |
7105 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 7106 | have their addresses modified. */ |
88f7da05 KB |
7107 | return bpaddr; |
7108 | } | |
7c16b83e PA |
7109 | else if (bptype == bp_single_step) |
7110 | { | |
7111 | /* Single-step breakpoints should not have their addresses | |
7112 | modified. If there's any architectural constrain that | |
7113 | applies to this address, then it should have already been | |
7114 | taken into account when the breakpoint was created in the | |
7115 | first place. If we didn't do this, stepping through e.g., | |
7116 | Thumb-2 IT blocks would break. */ | |
7117 | return bpaddr; | |
7118 | } | |
76897487 KB |
7119 | else |
7120 | { | |
a0de8c21 YQ |
7121 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7122 | ||
7123 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7124 | { | |
7125 | /* Some targets have architectural constraints on the placement | |
7126 | of breakpoint instructions. Obtain the adjusted address. */ | |
7127 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7128 | } | |
76897487 | 7129 | |
a0de8c21 | 7130 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7131 | |
7132 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7133 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7134 | is required. */ |
7135 | if (adjusted_bpaddr != bpaddr) | |
7136 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7137 | ||
7138 | return adjusted_bpaddr; | |
7139 | } | |
7140 | } | |
7141 | ||
cb1e4e32 PA |
7142 | static bp_loc_type |
7143 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7144 | { |
cb1e4e32 | 7145 | switch (type) |
e049a4b5 DJ |
7146 | { |
7147 | case bp_breakpoint: | |
7c16b83e | 7148 | case bp_single_step: |
e049a4b5 DJ |
7149 | case bp_until: |
7150 | case bp_finish: | |
7151 | case bp_longjmp: | |
7152 | case bp_longjmp_resume: | |
e2e4d78b | 7153 | case bp_longjmp_call_dummy: |
186c406b TT |
7154 | case bp_exception: |
7155 | case bp_exception_resume: | |
e049a4b5 | 7156 | case bp_step_resume: |
2c03e5be | 7157 | case bp_hp_step_resume: |
e049a4b5 DJ |
7158 | case bp_watchpoint_scope: |
7159 | case bp_call_dummy: | |
aa7d318d | 7160 | case bp_std_terminate: |
e049a4b5 DJ |
7161 | case bp_shlib_event: |
7162 | case bp_thread_event: | |
7163 | case bp_overlay_event: | |
4efc6507 | 7164 | case bp_jit_event: |
0fd8e87f | 7165 | case bp_longjmp_master: |
aa7d318d | 7166 | case bp_std_terminate_master: |
186c406b | 7167 | case bp_exception_master: |
0e30163f JK |
7168 | case bp_gnu_ifunc_resolver: |
7169 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7170 | case bp_dprintf: |
cb1e4e32 | 7171 | return bp_loc_software_breakpoint; |
e049a4b5 | 7172 | case bp_hardware_breakpoint: |
cb1e4e32 | 7173 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7174 | case bp_hardware_watchpoint: |
7175 | case bp_read_watchpoint: | |
7176 | case bp_access_watchpoint: | |
cb1e4e32 | 7177 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7178 | case bp_watchpoint: |
ce78b96d | 7179 | case bp_catchpoint: |
15c3d785 PA |
7180 | case bp_tracepoint: |
7181 | case bp_fast_tracepoint: | |
0fb4aa4b | 7182 | case bp_static_tracepoint: |
7b572efb | 7183 | case bp_static_marker_tracepoint: |
cb1e4e32 | 7184 | return bp_loc_other; |
e049a4b5 | 7185 | default: |
e2e0b3e5 | 7186 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7187 | } |
cb1e4e32 PA |
7188 | } |
7189 | ||
7190 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7191 | { | |
7192 | this->owner = owner; | |
7193 | this->cond_bytecode = NULL; | |
7194 | this->shlib_disabled = 0; | |
7195 | this->enabled = 1; | |
b5fa468f | 7196 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7197 | |
7198 | this->loc_type = type; | |
e049a4b5 | 7199 | |
cb1e4e32 PA |
7200 | if (this->loc_type == bp_loc_software_breakpoint |
7201 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7202 | mark_breakpoint_location_modified (this); | |
7203 | ||
b6433ede | 7204 | incref (); |
cb1e4e32 PA |
7205 | } |
7206 | ||
7207 | bp_location::bp_location (breakpoint *owner) | |
7208 | : bp_location::bp_location (owner, | |
7209 | bp_location_from_bp_type (owner->type)) | |
7210 | { | |
28010a5d PA |
7211 | } |
7212 | ||
f431efe5 PA |
7213 | /* Decrement reference count. If the reference count reaches 0, |
7214 | destroy the bp_location. Sets *BLP to NULL. */ | |
7215 | ||
7216 | static void | |
7217 | decref_bp_location (struct bp_location **blp) | |
7218 | { | |
b6433ede | 7219 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7220 | *blp = NULL; |
7221 | } | |
7222 | ||
346774a9 | 7223 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7224 | |
b270e6f9 TT |
7225 | static breakpoint * |
7226 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7227 | { |
346774a9 | 7228 | struct breakpoint *b1; |
b270e6f9 | 7229 | struct breakpoint *result = b.get (); |
c906108c | 7230 | |
346774a9 PA |
7231 | /* Add this breakpoint to the end of the chain so that a list of |
7232 | breakpoints will come out in order of increasing numbers. */ | |
7233 | ||
7234 | b1 = breakpoint_chain; | |
7235 | if (b1 == 0) | |
b270e6f9 | 7236 | breakpoint_chain = b.release (); |
346774a9 PA |
7237 | else |
7238 | { | |
7239 | while (b1->next) | |
7240 | b1 = b1->next; | |
b270e6f9 | 7241 | b1->next = b.release (); |
346774a9 | 7242 | } |
b270e6f9 TT |
7243 | |
7244 | return result; | |
346774a9 PA |
7245 | } |
7246 | ||
346774a9 PA |
7247 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
7248 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7249 | |
7250 | static struct breakpoint * | |
7251 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
9efa3c7f | 7252 | enum bptype bptype) |
346774a9 | 7253 | { |
73063f51 | 7254 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (gdbarch, bptype); |
346774a9 | 7255 | |
b270e6f9 | 7256 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7257 | } |
7258 | ||
0ba852ab | 7259 | /* Initialize loc->function_name. */ |
0e30163f | 7260 | |
0d381245 | 7261 | static void |
0ba852ab | 7262 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7263 | { |
2bdf28a0 JK |
7264 | gdb_assert (loc->owner != NULL); |
7265 | ||
0d381245 | 7266 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7267 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7268 | || is_tracepoint (loc->owner)) |
0d381245 | 7269 | { |
2c02bd72 | 7270 | const char *function_name; |
0e30163f | 7271 | |
3467ec66 | 7272 | if (loc->msymbol != NULL |
60f62e2b SM |
7273 | && (loc->msymbol->type () == mst_text_gnu_ifunc |
7274 | || loc->msymbol->type () == mst_data_gnu_ifunc)) | |
0e30163f JK |
7275 | { |
7276 | struct breakpoint *b = loc->owner; | |
7277 | ||
c9d95fa3 | 7278 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7279 | |
7280 | if (b->type == bp_breakpoint && b->loc == loc | |
7281 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7282 | { |
7283 | /* Create only the whole new breakpoint of this type but do not | |
7284 | mess more complicated breakpoints with multiple locations. */ | |
7285 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7286 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7287 | breakpoint. */ |
3467ec66 | 7288 | loc->related_address = loc->address; |
0e30163f JK |
7289 | } |
7290 | } | |
3467ec66 PA |
7291 | else |
7292 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7293 | |
2c02bd72 | 7294 | if (function_name) |
23d6ee64 | 7295 | loc->function_name = make_unique_xstrdup (function_name); |
0d381245 VP |
7296 | } |
7297 | } | |
7298 | ||
a6d9a66e | 7299 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7300 | struct gdbarch * |
a6d9a66e UW |
7301 | get_sal_arch (struct symtab_and_line sal) |
7302 | { | |
7303 | if (sal.section) | |
08feed99 | 7304 | return sal.section->objfile->arch (); |
a6d9a66e | 7305 | if (sal.symtab) |
3c86fae3 | 7306 | return sal.symtab->compunit ()->objfile ()->arch (); |
a6d9a66e UW |
7307 | |
7308 | return NULL; | |
7309 | } | |
7310 | ||
346774a9 PA |
7311 | /* Low level routine for partially initializing a breakpoint of type |
7312 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7313 | file name, and line number are provided by SAL. |
0d381245 VP |
7314 | |
7315 | It is expected that the caller will complete the initialization of | |
7316 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7317 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7318 | |
346774a9 | 7319 | static void |
73063f51 TT |
7320 | init_raw_breakpoint (struct breakpoint *b, struct symtab_and_line sal, |
7321 | enum bptype bptype) | |
0d381245 | 7322 | { |
06615628 | 7323 | b->add_location (sal); |
0d381245 | 7324 | |
6c95b8df PA |
7325 | if (bptype != bp_catchpoint) |
7326 | gdb_assert (sal.pspace != NULL); | |
7327 | ||
f8eba3c6 TT |
7328 | /* Store the program space that was used to set the breakpoint, |
7329 | except for ordinary breakpoints, which are independent of the | |
7330 | program space. */ | |
7331 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7332 | b->pspace = sal.pspace; | |
346774a9 | 7333 | } |
c906108c | 7334 | |
346774a9 PA |
7335 | /* set_raw_breakpoint is a low level routine for allocating and |
7336 | partially initializing a breakpoint of type BPTYPE. The newly | |
7337 | created breakpoint's address, section, source file name, and line | |
7338 | number are provided by SAL. The newly created and partially | |
7339 | initialized breakpoint is added to the breakpoint chain and | |
7340 | is also returned as the value of this function. | |
7341 | ||
7342 | It is expected that the caller will complete the initialization of | |
7343 | the newly created breakpoint struct as well as output any status | |
7344 | information regarding the creation of a new breakpoint. In | |
7345 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7346 | number! Care should be taken to not allow an error to occur | |
7347 | prior to completing the initialization of the breakpoint. If this | |
7348 | should happen, a bogus breakpoint will be left on the chain. */ | |
7349 | ||
cd0f67f3 | 7350 | static struct breakpoint * |
346774a9 | 7351 | set_raw_breakpoint (struct gdbarch *gdbarch, |
9efa3c7f | 7352 | struct symtab_and_line sal, enum bptype bptype) |
346774a9 | 7353 | { |
73063f51 | 7354 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (gdbarch, bptype); |
346774a9 | 7355 | |
73063f51 | 7356 | init_raw_breakpoint (b.get (), sal, bptype); |
b270e6f9 | 7357 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7358 | } |
7359 | ||
53a5351d | 7360 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7361 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7362 | initiated the operation. */ | |
c906108c SS |
7363 | |
7364 | void | |
186c406b | 7365 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7366 | { |
5d5658a1 | 7367 | int thread = tp->global_num; |
0fd8e87f UW |
7368 | |
7369 | /* To avoid having to rescan all objfile symbols at every step, | |
7370 | we maintain a list of continually-inserted but always disabled | |
7371 | longjmp "master" breakpoints. Here, we simply create momentary | |
7372 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7373 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7374 | if (b->pspace == current_program_space |
186c406b TT |
7375 | && (b->type == bp_longjmp_master |
7376 | || b->type == bp_exception_master)) | |
0fd8e87f | 7377 | { |
06edf0c0 PA |
7378 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7379 | struct breakpoint *clone; | |
cc59ec59 | 7380 | |
e2e4d78b JK |
7381 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7382 | after their removal. */ | |
9efa3c7f | 7383 | clone = momentary_breakpoint_from_master (b, type, 1); |
0fd8e87f UW |
7384 | clone->thread = thread; |
7385 | } | |
186c406b TT |
7386 | |
7387 | tp->initiating_frame = frame; | |
c906108c SS |
7388 | } |
7389 | ||
611c83ae | 7390 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7391 | void |
611c83ae | 7392 | delete_longjmp_breakpoint (int thread) |
c906108c | 7393 | { |
1428b37a | 7394 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7395 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7396 | { |
7397 | if (b->thread == thread) | |
7398 | delete_breakpoint (b); | |
7399 | } | |
c906108c SS |
7400 | } |
7401 | ||
f59f708a PA |
7402 | void |
7403 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7404 | { | |
1428b37a | 7405 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7406 | if (b->type == bp_longjmp || b->type == bp_exception) |
7407 | { | |
7408 | if (b->thread == thread) | |
7409 | b->disposition = disp_del_at_next_stop; | |
7410 | } | |
7411 | } | |
7412 | ||
e2e4d78b JK |
7413 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7414 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7415 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7416 | breakpoints. */ | |
7417 | ||
7418 | struct breakpoint * | |
7419 | set_longjmp_breakpoint_for_call_dummy (void) | |
7420 | { | |
43892fdf | 7421 | breakpoint *retval = nullptr; |
e2e4d78b | 7422 | |
43892fdf | 7423 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7424 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7425 | { | |
7426 | struct breakpoint *new_b; | |
7427 | ||
7428 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 | 7429 | 1); |
00431a78 | 7430 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7431 | |
7432 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7433 | ||
7434 | gdb_assert (new_b->related_breakpoint == new_b); | |
7435 | if (retval == NULL) | |
7436 | retval = new_b; | |
7437 | new_b->related_breakpoint = retval; | |
7438 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7439 | retval = retval->related_breakpoint; | |
7440 | retval->related_breakpoint = new_b; | |
7441 | } | |
7442 | ||
7443 | return retval; | |
7444 | } | |
7445 | ||
7446 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7447 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7448 | stack. |
7449 | ||
b4b3e2de AB |
7450 | If the unwind fails then there is not sufficient information to discard |
7451 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7452 | be cleaned up next time this function is called from a location where | |
7453 | unwinding is possible. */ | |
e2e4d78b JK |
7454 | |
7455 | void | |
b67a2c6f | 7456 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7457 | { |
7458 | struct breakpoint *b, *b_tmp; | |
7459 | ||
7460 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7461 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7462 | { |
7463 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7464 | ||
b4b3e2de AB |
7465 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7466 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7467 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7468 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7469 | |
7470 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7471 | more to do. Or, if the dummy frame associated with the | |
7472 | bp_call_dummy is still on the stack then we need to leave this | |
7473 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7474 | if (dummy_b->type != bp_call_dummy |
7475 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7476 | continue; | |
b4b3e2de AB |
7477 | |
7478 | /* We didn't find the dummy frame on the stack, this could be | |
7479 | because we have longjmp'd to a stack frame that is previous to | |
7480 | the dummy frame, or it could be because the stack unwind is | |
7481 | broken at some point between the longjmp frame and the dummy | |
7482 | frame. | |
7483 | ||
7484 | Next we figure out why the stack unwind stopped. If it looks | |
7485 | like the unwind is complete then we assume the dummy frame has | |
7486 | been jumped over, however, if the unwind stopped for an | |
7487 | unexpected reason then we assume the stack unwind is currently | |
7488 | broken, and that we will (eventually) return to the dummy | |
7489 | frame. | |
7490 | ||
7491 | It might be tempting to consider using frame_id_inner here, but | |
7492 | that is not safe. There is no guarantee that the stack frames | |
7493 | we are looking at here are even on the same stack as the | |
7494 | original dummy frame, hence frame_id_inner can't be used. See | |
7495 | the comments on frame_id_inner for more details. */ | |
7496 | bool unwind_finished_unexpectedly = false; | |
7497 | for (struct frame_info *fi = get_current_frame (); fi != nullptr; ) | |
7498 | { | |
7499 | struct frame_info *prev = get_prev_frame (fi); | |
7500 | if (prev == nullptr) | |
7501 | { | |
7502 | /* FI is the last stack frame. Why did this frame not | |
7503 | unwind further? */ | |
7504 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7505 | if (stop_reason != UNWIND_NO_REASON | |
7506 | && stop_reason != UNWIND_OUTERMOST) | |
7507 | unwind_finished_unexpectedly = true; | |
7508 | } | |
7509 | fi = prev; | |
7510 | } | |
7511 | if (unwind_finished_unexpectedly) | |
7512 | continue; | |
7513 | ||
00431a78 | 7514 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7515 | |
7516 | while (b->related_breakpoint != b) | |
7517 | { | |
7518 | if (b_tmp == b->related_breakpoint) | |
7519 | b_tmp = b->related_breakpoint->next; | |
7520 | delete_breakpoint (b->related_breakpoint); | |
7521 | } | |
7522 | delete_breakpoint (b); | |
7523 | } | |
7524 | } | |
7525 | ||
1900040c MS |
7526 | void |
7527 | enable_overlay_breakpoints (void) | |
7528 | { | |
43892fdf | 7529 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7530 | if (b->type == bp_overlay_event) |
01add95b SM |
7531 | { |
7532 | b->enable_state = bp_enabled; | |
7533 | update_global_location_list (UGLL_MAY_INSERT); | |
7534 | overlay_events_enabled = 1; | |
7535 | } | |
1900040c MS |
7536 | } |
7537 | ||
7538 | void | |
7539 | disable_overlay_breakpoints (void) | |
7540 | { | |
43892fdf | 7541 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7542 | if (b->type == bp_overlay_event) |
01add95b SM |
7543 | { |
7544 | b->enable_state = bp_disabled; | |
7545 | update_global_location_list (UGLL_DONT_INSERT); | |
7546 | overlay_events_enabled = 0; | |
7547 | } | |
1900040c MS |
7548 | } |
7549 | ||
aa7d318d TT |
7550 | /* Set an active std::terminate breakpoint for each std::terminate |
7551 | master breakpoint. */ | |
7552 | void | |
7553 | set_std_terminate_breakpoint (void) | |
7554 | { | |
1428b37a | 7555 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7556 | if (b->pspace == current_program_space |
7557 | && b->type == bp_std_terminate_master) | |
7558 | { | |
9efa3c7f | 7559 | momentary_breakpoint_from_master (b, bp_std_terminate, 1); |
aa7d318d TT |
7560 | } |
7561 | } | |
7562 | ||
7563 | /* Delete all the std::terminate breakpoints. */ | |
7564 | void | |
7565 | delete_std_terminate_breakpoint (void) | |
7566 | { | |
1428b37a | 7567 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7568 | if (b->type == bp_std_terminate) |
7569 | delete_breakpoint (b); | |
7570 | } | |
7571 | ||
c4093a6a | 7572 | struct breakpoint * |
a6d9a66e | 7573 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7574 | { |
7575 | struct breakpoint *b; | |
c4093a6a | 7576 | |
9efa3c7f | 7577 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
06edf0c0 | 7578 | |
b5de0fa7 | 7579 | b->enable_state = bp_enabled; |
f00aae0f | 7580 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7581 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7582 | |
44702360 | 7583 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7584 | |
c4093a6a JM |
7585 | return b; |
7586 | } | |
7587 | ||
0101ce28 JJ |
7588 | struct lang_and_radix |
7589 | { | |
7590 | enum language lang; | |
7591 | int radix; | |
7592 | }; | |
7593 | ||
4efc6507 DE |
7594 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7595 | ||
7596 | struct breakpoint * | |
7597 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7598 | { | |
9efa3c7f | 7599 | return create_internal_breakpoint (gdbarch, address, bp_jit_event); |
4efc6507 | 7600 | } |
0101ce28 | 7601 | |
03673fc7 PP |
7602 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7603 | ||
7604 | void | |
7605 | remove_jit_event_breakpoints (void) | |
7606 | { | |
1428b37a | 7607 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7608 | if (b->type == bp_jit_event |
7609 | && b->loc->pspace == current_program_space) | |
7610 | delete_breakpoint (b); | |
7611 | } | |
7612 | ||
cae688ec JJ |
7613 | void |
7614 | remove_solib_event_breakpoints (void) | |
7615 | { | |
1428b37a | 7616 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7617 | if (b->type == bp_shlib_event |
7618 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7619 | delete_breakpoint (b); |
7620 | } | |
7621 | ||
f37f681c PA |
7622 | /* See breakpoint.h. */ |
7623 | ||
7624 | void | |
7625 | remove_solib_event_breakpoints_at_next_stop (void) | |
7626 | { | |
1428b37a | 7627 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7628 | if (b->type == bp_shlib_event |
7629 | && b->loc->pspace == current_program_space) | |
7630 | b->disposition = disp_del_at_next_stop; | |
7631 | } | |
7632 | ||
04086b45 PA |
7633 | /* Helper for create_solib_event_breakpoint / |
7634 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7635 | INSERT_MODE to pass through to update_global_location_list. */ | |
7636 | ||
7637 | static struct breakpoint * | |
7638 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7639 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7640 | { |
7641 | struct breakpoint *b; | |
7642 | ||
9efa3c7f | 7643 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
04086b45 | 7644 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7645 | return b; |
7646 | } | |
7647 | ||
04086b45 PA |
7648 | struct breakpoint * |
7649 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7650 | { | |
7651 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7652 | } | |
7653 | ||
f37f681c PA |
7654 | /* See breakpoint.h. */ |
7655 | ||
7656 | struct breakpoint * | |
7657 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7658 | { | |
7659 | struct breakpoint *b; | |
7660 | ||
04086b45 PA |
7661 | /* Explicitly tell update_global_location_list to insert |
7662 | locations. */ | |
7663 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7664 | if (!b->loc->inserted) |
7665 | { | |
7666 | delete_breakpoint (b); | |
7667 | return NULL; | |
7668 | } | |
7669 | return b; | |
7670 | } | |
7671 | ||
cae688ec JJ |
7672 | /* Disable any breakpoints that are on code in shared libraries. Only |
7673 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7674 | ||
7675 | void | |
cb851954 | 7676 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7677 | { |
48d7020b | 7678 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7679 | { |
7680 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7681 | struct breakpoint *b = loc->owner; | |
7682 | ||
7683 | /* We apply the check to all breakpoints, including disabled for | |
7684 | those with loc->duplicate set. This is so that when breakpoint | |
7685 | becomes enabled, or the duplicate is removed, gdb will try to | |
7686 | insert all breakpoints. If we don't set shlib_disabled here, | |
7687 | we'll try to insert those breakpoints and fail. */ | |
7688 | if (((b->type == bp_breakpoint) | |
7689 | || (b->type == bp_jit_event) | |
7690 | || (b->type == bp_hardware_breakpoint) | |
7691 | || (is_tracepoint (b))) | |
7692 | && loc->pspace == current_program_space | |
7693 | && !loc->shlib_disabled | |
7694 | && solib_name_from_address (loc->pspace, loc->address) | |
7695 | ) | |
7696 | { | |
7697 | loc->shlib_disabled = 1; | |
7698 | } | |
7699 | } | |
cae688ec JJ |
7700 | } |
7701 | ||
63644780 NB |
7702 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7703 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7704 | disabled ones can just stay disabled. */ | |
84acb35a | 7705 | |
75149521 | 7706 | static void |
84acb35a JJ |
7707 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7708 | { | |
84acb35a JJ |
7709 | int disabled_shlib_breaks = 0; |
7710 | ||
48d7020b | 7711 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7712 | { |
7713 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7714 | struct breakpoint *b = loc->owner; | |
7715 | ||
7716 | if (solib->pspace == loc->pspace | |
7717 | && !loc->shlib_disabled | |
7718 | && (((b->type == bp_breakpoint | |
7719 | || b->type == bp_jit_event | |
7720 | || b->type == bp_hardware_breakpoint) | |
7721 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7722 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7723 | || is_tracepoint (b)) | |
7724 | && solib_contains_address_p (solib, loc->address)) | |
7725 | { | |
7726 | loc->shlib_disabled = 1; | |
7727 | /* At this point, we cannot rely on remove_breakpoint | |
7728 | succeeding so we must mark the breakpoint as not inserted | |
7729 | to prevent future errors occurring in remove_breakpoints. */ | |
7730 | loc->inserted = 0; | |
7731 | ||
7732 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7733 | gdb::observers::breakpoint_modified.notify (b); | |
7734 | ||
7735 | if (!disabled_shlib_breaks) | |
7736 | { | |
7737 | target_terminal::ours_for_output (); | |
7738 | warning (_("Temporarily disabling breakpoints " | |
7739 | "for unloaded shared library \"%s\""), | |
7740 | solib->so_name); | |
7741 | } | |
7742 | disabled_shlib_breaks = 1; | |
7743 | } | |
7744 | } | |
84acb35a JJ |
7745 | } |
7746 | ||
63644780 NB |
7747 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7748 | notification of free_objfile. Only apply to enabled breakpoints, | |
7749 | disabled ones can just stay disabled. */ | |
7750 | ||
7751 | static void | |
7752 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7753 | { | |
63644780 NB |
7754 | if (objfile == NULL) |
7755 | return; | |
7756 | ||
d03de421 PA |
7757 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7758 | managed by the user with add-symbol-file/remove-symbol-file. | |
7759 | Similarly to how breakpoints in shared libraries are handled in | |
7760 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7761 | shlib_disabled so they end up uninserted on the next global |
7762 | location list update. Shared libraries not loaded by the user | |
7763 | aren't handled here -- they're already handled in | |
7764 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7765 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7766 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7767 | main objfile). */ | |
7768 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7769 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7770 | return; |
7771 | ||
43892fdf | 7772 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7773 | { |
63644780 NB |
7774 | int bp_modified = 0; |
7775 | ||
7776 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7777 | continue; | |
7778 | ||
40cb8ca5 | 7779 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7780 | { |
7781 | CORE_ADDR loc_addr = loc->address; | |
7782 | ||
7783 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7784 | && loc->loc_type != bp_loc_software_breakpoint) | |
7785 | continue; | |
7786 | ||
7787 | if (loc->shlib_disabled != 0) | |
7788 | continue; | |
7789 | ||
7790 | if (objfile->pspace != loc->pspace) | |
7791 | continue; | |
7792 | ||
7793 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7794 | && loc->loc_type != bp_loc_software_breakpoint) | |
7795 | continue; | |
7796 | ||
7797 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7798 | { | |
7799 | loc->shlib_disabled = 1; | |
08351840 PA |
7800 | /* At this point, we don't know whether the object was |
7801 | unmapped from the inferior or not, so leave the | |
7802 | inserted flag alone. We'll handle failure to | |
7803 | uninsert quietly, in case the object was indeed | |
7804 | unmapped. */ | |
63644780 NB |
7805 | |
7806 | mark_breakpoint_location_modified (loc); | |
7807 | ||
7808 | bp_modified = 1; | |
7809 | } | |
7810 | } | |
7811 | ||
7812 | if (bp_modified) | |
76727919 | 7813 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7814 | } |
7815 | } | |
7816 | ||
b650a282 | 7817 | /* See breakpoint.h. */ |
ce78b96d | 7818 | |
fed1c982 TT |
7819 | catchpoint::catchpoint (struct gdbarch *gdbarch, bool temp, |
7820 | const char *cond_string_) | |
7821 | : base_breakpoint (gdbarch, bp_catchpoint) | |
c906108c | 7822 | { |
51abb421 | 7823 | symtab_and_line sal; |
6c95b8df | 7824 | sal.pspace = current_program_space; |
c5aa993b | 7825 | |
fed1c982 | 7826 | init_raw_breakpoint (this, sal, bp_catchpoint); |
ce78b96d | 7827 | |
fed1c982 TT |
7828 | if (cond_string_ != nullptr) |
7829 | cond_string = make_unique_xstrdup (cond_string_); | |
7830 | disposition = temp ? disp_del : disp_donttouch; | |
346774a9 PA |
7831 | } |
7832 | ||
28010a5d | 7833 | void |
b270e6f9 | 7834 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 7835 | { |
b270e6f9 | 7836 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 7837 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
7838 | if (is_tracepoint (b)) |
7839 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
7840 | if (!internal) |
7841 | mention (b); | |
76727919 | 7842 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
7843 | |
7844 | if (update_gll) | |
44702360 | 7845 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
7846 | } |
7847 | ||
c906108c | 7848 | static int |
fba45db2 | 7849 | hw_breakpoint_used_count (void) |
c906108c | 7850 | { |
c906108c SS |
7851 | int i = 0; |
7852 | ||
43892fdf | 7853 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 7854 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 7855 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
7856 | { |
7857 | /* Special types of hardware breakpoints may use more than | |
7858 | one register. */ | |
c47614fe | 7859 | i += b->resources_needed (bl); |
f1310107 | 7860 | } |
c906108c SS |
7861 | |
7862 | return i; | |
7863 | } | |
7864 | ||
a1398e0c PA |
7865 | /* Returns the resources B would use if it were a hardware |
7866 | watchpoint. */ | |
7867 | ||
c906108c | 7868 | static int |
a1398e0c | 7869 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 7870 | { |
c906108c SS |
7871 | int i = 0; |
7872 | ||
a1398e0c PA |
7873 | if (!breakpoint_enabled (b)) |
7874 | return 0; | |
7875 | ||
40cb8ca5 | 7876 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
7877 | { |
7878 | /* Special types of hardware watchpoints may use more than | |
7879 | one register. */ | |
c47614fe | 7880 | i += b->resources_needed (bl); |
a1398e0c PA |
7881 | } |
7882 | ||
7883 | return i; | |
7884 | } | |
7885 | ||
7886 | /* Returns the sum the used resources of all hardware watchpoints of | |
7887 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
7888 | the sum of the used resources of all hardware watchpoints of other | |
7889 | types _not_ TYPE. */ | |
7890 | ||
7891 | static int | |
7892 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
7893 | enum bptype type, int *other_type_used) | |
7894 | { | |
7895 | int i = 0; | |
a1398e0c | 7896 | |
c906108c | 7897 | *other_type_used = 0; |
43892fdf | 7898 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 7899 | { |
a1398e0c PA |
7900 | if (b == except) |
7901 | continue; | |
e09342b5 TJB |
7902 | if (!breakpoint_enabled (b)) |
7903 | continue; | |
7904 | ||
a1398e0c PA |
7905 | if (b->type == type) |
7906 | i += hw_watchpoint_use_count (b); | |
7907 | else if (is_hardware_watchpoint (b)) | |
7908 | *other_type_used = 1; | |
e09342b5 TJB |
7909 | } |
7910 | ||
c906108c SS |
7911 | return i; |
7912 | } | |
7913 | ||
c906108c | 7914 | void |
fba45db2 | 7915 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 7916 | { |
43892fdf | 7917 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7918 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 7919 | { |
b5de0fa7 | 7920 | b->enable_state = bp_call_disabled; |
44702360 | 7921 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 7922 | } |
c906108c SS |
7923 | } |
7924 | ||
7925 | void | |
fba45db2 | 7926 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 7927 | { |
43892fdf | 7928 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7929 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7930 | { |
b5de0fa7 | 7931 | b->enable_state = bp_enabled; |
44702360 | 7932 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 7933 | } |
c906108c SS |
7934 | } |
7935 | ||
8bea4e01 UW |
7936 | void |
7937 | disable_breakpoints_before_startup (void) | |
7938 | { | |
6c95b8df | 7939 | current_program_space->executing_startup = 1; |
44702360 | 7940 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
7941 | } |
7942 | ||
7943 | void | |
7944 | enable_breakpoints_after_startup (void) | |
7945 | { | |
6c95b8df | 7946 | current_program_space->executing_startup = 0; |
f8eba3c6 | 7947 | breakpoint_re_set (); |
8bea4e01 UW |
7948 | } |
7949 | ||
7c16b83e PA |
7950 | /* Create a new single-step breakpoint for thread THREAD, with no |
7951 | locations. */ | |
c906108c | 7952 | |
7c16b83e PA |
7953 | static struct breakpoint * |
7954 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
7955 | { | |
73063f51 TT |
7956 | std::unique_ptr<breakpoint> b (new momentary_breakpoint (gdbarch, |
7957 | bp_single_step)); | |
7c16b83e PA |
7958 | |
7959 | b->disposition = disp_donttouch; | |
7960 | b->frame_id = null_frame_id; | |
7961 | ||
7962 | b->thread = thread; | |
7963 | gdb_assert (b->thread != 0); | |
7964 | ||
b270e6f9 | 7965 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
7966 | } |
7967 | ||
7968 | /* Set a momentary breakpoint of type TYPE at address specified by | |
7969 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
7970 | frame. */ | |
c906108c | 7971 | |
454dafbd | 7972 | breakpoint_up |
a6d9a66e UW |
7973 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7974 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7975 | { |
52f0bd74 | 7976 | struct breakpoint *b; |
edb3359d | 7977 | |
193facb3 JK |
7978 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
7979 | tail-called one. */ | |
7980 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 7981 | |
9efa3c7f | 7982 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
7983 | b->enable_state = bp_enabled; |
7984 | b->disposition = disp_donttouch; | |
818dd999 | 7985 | b->frame_id = frame_id; |
c906108c | 7986 | |
00431a78 | 7987 | b->thread = inferior_thread ()->global_num; |
c906108c | 7988 | |
44702360 | 7989 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7990 | |
454dafbd | 7991 | return breakpoint_up (b); |
c906108c | 7992 | } |
611c83ae | 7993 | |
06edf0c0 | 7994 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
7995 | The new breakpoint will have type TYPE, use OPS as its |
7996 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 7997 | |
06edf0c0 PA |
7998 | static struct breakpoint * |
7999 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8000 | enum bptype type, | |
a1aa2221 | 8001 | int loc_enabled) |
e58b0e63 PA |
8002 | { |
8003 | struct breakpoint *copy; | |
8004 | ||
9efa3c7f | 8005 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type); |
ee89d0a4 | 8006 | copy->loc = copy->allocate_location (); |
0ba852ab | 8007 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8008 | |
a6d9a66e | 8009 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8010 | copy->loc->requested_address = orig->loc->requested_address; |
8011 | copy->loc->address = orig->loc->address; | |
8012 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8013 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8014 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8015 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8016 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8017 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8018 | copy->frame_id = orig->frame_id; |
8019 | copy->thread = orig->thread; | |
6c95b8df | 8020 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8021 | |
8022 | copy->enable_state = bp_enabled; | |
8023 | copy->disposition = disp_donttouch; | |
8024 | copy->number = internal_breakpoint_number--; | |
8025 | ||
44702360 | 8026 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8027 | return copy; |
8028 | } | |
8029 | ||
06edf0c0 PA |
8030 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8031 | ORIG is NULL. */ | |
8032 | ||
8033 | struct breakpoint * | |
8034 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8035 | { | |
8036 | /* If there's nothing to clone, then return nothing. */ | |
8037 | if (orig == NULL) | |
8038 | return NULL; | |
8039 | ||
9efa3c7f | 8040 | return momentary_breakpoint_from_master (orig, orig->type, 0); |
06edf0c0 PA |
8041 | } |
8042 | ||
454dafbd | 8043 | breakpoint_up |
a6d9a66e UW |
8044 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8045 | enum bptype type) | |
611c83ae PA |
8046 | { |
8047 | struct symtab_and_line sal; | |
8048 | ||
8049 | sal = find_pc_line (pc, 0); | |
8050 | sal.pc = pc; | |
8051 | sal.section = find_pc_overlay (pc); | |
8052 | sal.explicit_pc = 1; | |
8053 | ||
a6d9a66e | 8054 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8055 | } |
c906108c | 8056 | \f |
c5aa993b | 8057 | |
c906108c SS |
8058 | /* Tell the user we have just set a breakpoint B. */ |
8059 | ||
8060 | static void | |
b713485d | 8061 | mention (const breakpoint *b) |
c906108c | 8062 | { |
c47614fe | 8063 | b->print_mention (); |
2d33446d | 8064 | current_uiout->text ("\n"); |
c906108c | 8065 | } |
c906108c | 8066 | \f |
c5aa993b | 8067 | |
5133a315 | 8068 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8069 | |
7f32a4d5 PA |
8070 | /* Handle "set breakpoint auto-hw on". |
8071 | ||
8072 | If the explicitly specified breakpoint type is not hardware | |
8073 | breakpoint, check the memory map to see whether the breakpoint | |
8074 | address is in read-only memory. | |
8075 | ||
8076 | - location type is not hardware breakpoint, memory is read-only. | |
8077 | We change the type of the location to hardware breakpoint. | |
8078 | ||
8079 | - location type is hardware breakpoint, memory is read-write. This | |
8080 | means we've previously made the location hardware one, but then the | |
8081 | memory map changed, so we undo. | |
8082 | */ | |
8083 | ||
8084 | static void | |
8085 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8086 | { | |
8087 | if (automatic_hardware_breakpoints | |
8088 | && bl->owner->type != bp_hardware_breakpoint | |
8089 | && (bl->loc_type == bp_loc_software_breakpoint | |
8090 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8091 | { | |
8092 | /* When breakpoints are removed, remove_breakpoints will use | |
8093 | location types we've just set here, the only possible problem | |
8094 | is that memory map has changed during running program, but | |
8095 | it's not going to work anyway with current gdb. */ | |
8096 | mem_region *mr = lookup_mem_region (bl->address); | |
8097 | ||
8098 | if (mr != nullptr) | |
8099 | { | |
8100 | enum bp_loc_type new_type; | |
8101 | ||
8102 | if (mr->attrib.mode != MEM_RW) | |
8103 | new_type = bp_loc_hardware_breakpoint; | |
8104 | else | |
8105 | new_type = bp_loc_software_breakpoint; | |
8106 | ||
8107 | if (new_type != bl->loc_type) | |
8108 | { | |
8109 | static bool said = false; | |
8110 | ||
8111 | bl->loc_type = new_type; | |
8112 | if (!said) | |
8113 | { | |
6cb06a8c TT |
8114 | gdb_printf (_("Note: automatically using " |
8115 | "hardware breakpoints for " | |
8116 | "read-only addresses.\n")); | |
7f32a4d5 PA |
8117 | said = true; |
8118 | } | |
8119 | } | |
8120 | } | |
8121 | } | |
8122 | } | |
8123 | ||
06615628 PA |
8124 | bp_location * |
8125 | breakpoint::add_location (const symtab_and_line &sal) | |
0d381245 | 8126 | { |
06615628 | 8127 | struct bp_location *new_loc, **tmp; |
3742cc8b | 8128 | CORE_ADDR adjusted_address; |
06615628 | 8129 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
3742cc8b YQ |
8130 | |
8131 | if (loc_gdbarch == NULL) | |
06615628 | 8132 | loc_gdbarch = gdbarch; |
3742cc8b YQ |
8133 | |
8134 | /* Adjust the breakpoint's address prior to allocating a location. | |
ee89d0a4 | 8135 | Once we call allocate_location(), that mostly uninitialized |
3742cc8b YQ |
8136 | location will be placed on the location chain. Adjustment of the |
8137 | breakpoint may cause target_read_memory() to be called and we do | |
8138 | not want its scan of the location chain to find a breakpoint and | |
8139 | location that's only been partially initialized. */ | |
8140 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
06615628 | 8141 | sal.pc, type); |
0d381245 | 8142 | |
d30113d4 | 8143 | /* Sort the locations by their ADDRESS. */ |
06615628 PA |
8144 | new_loc = allocate_location (); |
8145 | for (tmp = &(loc); *tmp != NULL && (*tmp)->address <= adjusted_address; | |
d30113d4 | 8146 | tmp = &((*tmp)->next)) |
0d381245 | 8147 | ; |
06615628 PA |
8148 | new_loc->next = *tmp; |
8149 | *tmp = new_loc; | |
8150 | ||
8151 | new_loc->requested_address = sal.pc; | |
8152 | new_loc->address = adjusted_address; | |
8153 | new_loc->pspace = sal.pspace; | |
8154 | new_loc->probe.prob = sal.prob; | |
8155 | new_loc->probe.objfile = sal.objfile; | |
8156 | gdb_assert (new_loc->pspace != NULL); | |
8157 | new_loc->section = sal.section; | |
8158 | new_loc->gdbarch = loc_gdbarch; | |
8159 | new_loc->line_number = sal.line; | |
8160 | new_loc->symtab = sal.symtab; | |
8161 | new_loc->symbol = sal.symbol; | |
8162 | new_loc->msymbol = sal.msymbol; | |
8163 | new_loc->objfile = sal.objfile; | |
8164 | ||
8165 | set_breakpoint_location_function (new_loc); | |
1a853c52 | 8166 | |
6ae88661 LM |
8167 | /* While by definition, permanent breakpoints are already present in the |
8168 | code, we don't mark the location as inserted. Normally one would expect | |
8169 | that GDB could rely on that breakpoint instruction to stop the program, | |
8170 | thus removing the need to insert its own breakpoint, except that executing | |
8171 | the breakpoint instruction can kill the target instead of reporting a | |
8172 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8173 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8174 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8175 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8176 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8177 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8178 | it manually increments the PC, thus avoiding executing the breakpoint | |
8179 | instruction.) */ | |
06615628 PA |
8180 | if (bp_loc_is_permanent (new_loc)) |
8181 | new_loc->permanent = 1; | |
1a853c52 | 8182 | |
06615628 | 8183 | return new_loc; |
0d381245 | 8184 | } |
514f746b AR |
8185 | \f |
8186 | ||
5133a315 LM |
8187 | /* Return true if LOC is pointing to a permanent breakpoint, |
8188 | return false otherwise. */ | |
1cf4d951 | 8189 | |
5133a315 | 8190 | static bool |
1cf4d951 PA |
8191 | bp_loc_is_permanent (struct bp_location *loc) |
8192 | { | |
514f746b AR |
8193 | gdb_assert (loc != NULL); |
8194 | ||
cb1e4e32 PA |
8195 | /* If we have a non-breakpoint-backed catchpoint or a software |
8196 | watchpoint, just return 0. We should not attempt to read from | |
8197 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8198 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8199 | memory. */ |
cb1e4e32 | 8200 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8201 | return false; |
244558af | 8202 | |
5ed8105e | 8203 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8204 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8205 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8206 | } |
8207 | ||
e7e0cddf SS |
8208 | /* Build a command list for the dprintf corresponding to the current |
8209 | settings of the dprintf style options. */ | |
8210 | ||
8211 | static void | |
8212 | update_dprintf_command_list (struct breakpoint *b) | |
8213 | { | |
6f781ee3 | 8214 | const char *dprintf_args = b->extra_string.get (); |
8579fd13 | 8215 | gdb::unique_xmalloc_ptr<char> printf_line = nullptr; |
e7e0cddf SS |
8216 | |
8217 | if (!dprintf_args) | |
8218 | return; | |
8219 | ||
8220 | dprintf_args = skip_spaces (dprintf_args); | |
8221 | ||
8222 | /* Allow a comma, as it may have terminated a location, but don't | |
8223 | insist on it. */ | |
8224 | if (*dprintf_args == ',') | |
8225 | ++dprintf_args; | |
8226 | dprintf_args = skip_spaces (dprintf_args); | |
8227 | ||
8228 | if (*dprintf_args != '"') | |
8229 | error (_("Bad format string, missing '\"'.")); | |
8230 | ||
d3ce09f5 | 8231 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8232 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8233 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf | 8234 | { |
e0700ba4 | 8235 | if (dprintf_function.empty ()) |
e7e0cddf SS |
8236 | error (_("No function supplied for dprintf call")); |
8237 | ||
e0700ba4 | 8238 | if (!dprintf_channel.empty ()) |
e7e0cddf | 8239 | printf_line = xstrprintf ("call (void) %s (%s,%s)", |
e0700ba4 SM |
8240 | dprintf_function.c_str (), |
8241 | dprintf_channel.c_str (), | |
e7e0cddf SS |
8242 | dprintf_args); |
8243 | else | |
8244 | printf_line = xstrprintf ("call (void) %s (%s)", | |
e0700ba4 | 8245 | dprintf_function.c_str (), |
e7e0cddf SS |
8246 | dprintf_args); |
8247 | } | |
d3ce09f5 SS |
8248 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8249 | { | |
8250 | if (target_can_run_breakpoint_commands ()) | |
8251 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8252 | else | |
8253 | { | |
8254 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8255 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8256 | } | |
8257 | } | |
e7e0cddf SS |
8258 | else |
8259 | internal_error (__FILE__, __LINE__, | |
8260 | _("Invalid dprintf style.")); | |
8261 | ||
f28045c2 | 8262 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8263 | |
12973681 TT |
8264 | /* Manufacture a printf sequence. */ |
8265 | struct command_line *printf_cmd_line | |
8579fd13 | 8266 | = new struct command_line (simple_control, printf_line.release ()); |
12973681 TT |
8267 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, |
8268 | command_lines_deleter ())); | |
e7e0cddf SS |
8269 | } |
8270 | ||
8271 | /* Update all dprintf commands, making their command lists reflect | |
8272 | current style settings. */ | |
8273 | ||
8274 | static void | |
eb4c3f4a | 8275 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8276 | struct cmd_list_element *c) |
8277 | { | |
43892fdf SM |
8278 | for (breakpoint *b : all_breakpoints ()) |
8279 | if (b->type == bp_dprintf) | |
e7e0cddf | 8280 | update_dprintf_command_list (b); |
e7e0cddf | 8281 | } |
c3f6f71d | 8282 | |
f00aae0f KS |
8283 | /* Create a breakpoint with SAL as location. Use LOCATION |
8284 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8285 | as condition expression. If LOCATION is NULL then create an |
8286 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8287 | |
8288 | static void | |
d9b3f62e | 8289 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8290 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8291 | event_location_up &&location, |
e1e01040 PA |
8292 | gdb::unique_xmalloc_ptr<char> filter, |
8293 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8294 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8295 | enum bptype type, enum bpdisp disposition, |
8296 | int thread, int task, int ignore_count, | |
c0a91b2b | 8297 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8298 | int enabled, int internal, unsigned flags, |
8299 | int display_canonical) | |
018d34a4 | 8300 | { |
0d381245 | 8301 | int i; |
018d34a4 VP |
8302 | |
8303 | if (type == bp_hardware_breakpoint) | |
8304 | { | |
fbbd034e AS |
8305 | int target_resources_ok; |
8306 | ||
8307 | i = hw_breakpoint_used_count (); | |
8308 | target_resources_ok = | |
8309 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8310 | i + 1, 0); |
8311 | if (target_resources_ok == 0) | |
8312 | error (_("No hardware breakpoint support in the target.")); | |
8313 | else if (target_resources_ok < 0) | |
8314 | error (_("Hardware breakpoints used exceeds limit.")); | |
8315 | } | |
8316 | ||
6c5b2ebe | 8317 | gdb_assert (!sals.empty ()); |
6c95b8df | 8318 | |
6c5b2ebe | 8319 | for (const auto &sal : sals) |
0d381245 | 8320 | { |
0d381245 VP |
8321 | struct bp_location *loc; |
8322 | ||
8323 | if (from_tty) | |
5af949e3 UW |
8324 | { |
8325 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8326 | if (!loc_gdbarch) | |
8327 | loc_gdbarch = gdbarch; | |
8328 | ||
8329 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8330 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8331 | } |
0d381245 | 8332 | |
6c5b2ebe | 8333 | if (&sal == &sals[0]) |
0d381245 | 8334 | { |
73063f51 | 8335 | init_raw_breakpoint (b, sal, type); |
0d381245 | 8336 | b->thread = thread; |
4a306c9a | 8337 | b->task = task; |
855a6e68 | 8338 | |
6f781ee3 TT |
8339 | b->cond_string = std::move (cond_string); |
8340 | b->extra_string = std::move (extra_string); | |
0d381245 | 8341 | b->ignore_count = ignore_count; |
41447f92 | 8342 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8343 | b->disposition = disposition; |
6c95b8df | 8344 | |
44f238bb PA |
8345 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8346 | b->loc->inserted = 1; | |
8347 | ||
7b572efb TT |
8348 | if (type == bp_static_tracepoint |
8349 | || type == bp_static_marker_tracepoint) | |
0fb4aa4b | 8350 | { |
d9b3f62e | 8351 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8352 | struct static_tracepoint_marker marker; |
8353 | ||
983af33b | 8354 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8355 | { |
8356 | /* We already know the marker exists, otherwise, we | |
8357 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8358 | const char *p |
8359 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8360 | const char *endp; |
0fb4aa4b | 8361 | |
f1735a53 | 8362 | p = skip_spaces (p); |
0fb4aa4b | 8363 | |
f1735a53 | 8364 | endp = skip_to_space (p); |
0fb4aa4b | 8365 | |
5d9310c4 | 8366 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8367 | |
6cb06a8c TT |
8368 | gdb_printf (_("Probed static tracepoint " |
8369 | "marker \"%s\"\n"), | |
8370 | t->static_trace_marker_id.c_str ()); | |
0fb4aa4b PA |
8371 | } |
8372 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8373 | { | |
5d9310c4 | 8374 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8375 | |
6cb06a8c TT |
8376 | gdb_printf (_("Probed static tracepoint " |
8377 | "marker \"%s\"\n"), | |
8378 | t->static_trace_marker_id.c_str ()); | |
0fb4aa4b PA |
8379 | } |
8380 | else | |
3e43a32a MS |
8381 | warning (_("Couldn't determine the static " |
8382 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8383 | } |
8384 | ||
0d381245 VP |
8385 | loc = b->loc; |
8386 | } | |
8387 | else | |
018d34a4 | 8388 | { |
06615628 | 8389 | loc = b->add_location (sal); |
44f238bb PA |
8390 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8391 | loc->inserted = 1; | |
0d381245 VP |
8392 | } |
8393 | ||
b5fa468f TBA |
8394 | /* Do not set breakpoint locations conditions yet. As locations |
8395 | are inserted, they get sorted based on their addresses. Let | |
8396 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8397 | |
8398 | /* Dynamic printf requires and uses additional arguments on the | |
8399 | command line, otherwise it's an error. */ | |
8400 | if (type == bp_dprintf) | |
8401 | { | |
8402 | if (b->extra_string) | |
8403 | update_dprintf_command_list (b); | |
8404 | else | |
8405 | error (_("Format string required")); | |
8406 | } | |
8407 | else if (b->extra_string) | |
6f781ee3 | 8408 | error (_("Garbage '%s' at end of command"), b->extra_string.get ()); |
855a6e68 | 8409 | } |
018d34a4 | 8410 | |
b5fa468f TBA |
8411 | |
8412 | /* The order of the locations is now stable. Set the location | |
8413 | condition using the location's number. */ | |
8414 | int loc_num = 1; | |
40cb8ca5 | 8415 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
8416 | { |
8417 | if (b->cond_string != nullptr) | |
6f781ee3 TT |
8418 | set_breakpoint_location_condition (b->cond_string.get (), loc, |
8419 | b->number, loc_num); | |
b5fa468f TBA |
8420 | |
8421 | ++loc_num; | |
8422 | } | |
8423 | ||
56435ebe | 8424 | b->display_canonical = display_canonical; |
f00aae0f | 8425 | if (location != NULL) |
d28cd78a | 8426 | b->location = std::move (location); |
018d34a4 | 8427 | else |
d28cd78a | 8428 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8429 | b->filter = std::move (filter); |
d9b3f62e | 8430 | } |
018d34a4 | 8431 | |
d9b3f62e PA |
8432 | static void |
8433 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8434 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8435 | event_location_up &&location, |
e1e01040 PA |
8436 | gdb::unique_xmalloc_ptr<char> filter, |
8437 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8438 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8439 | enum bptype type, enum bpdisp disposition, |
8440 | int thread, int task, int ignore_count, | |
c0a91b2b | 8441 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8442 | int enabled, int internal, unsigned flags, |
8443 | int display_canonical) | |
d9b3f62e | 8444 | { |
73063f51 | 8445 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (gdbarch, type); |
d9b3f62e | 8446 | |
a5e364af | 8447 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8448 | sals, std::move (location), |
e1e01040 PA |
8449 | std::move (filter), |
8450 | std::move (cond_string), | |
8451 | std::move (extra_string), | |
d9b3f62e PA |
8452 | type, disposition, |
8453 | thread, task, ignore_count, | |
8454 | ops, from_tty, | |
44f238bb PA |
8455 | enabled, internal, flags, |
8456 | display_canonical); | |
d9b3f62e | 8457 | |
b270e6f9 | 8458 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8459 | } |
8460 | ||
8461 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8462 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8463 | value. COND_STRING, if not NULL, specified the condition to be | |
8464 | used for all breakpoints. Essentially the only case where | |
8465 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8466 | function. In that case, it's still not possible to specify | |
8467 | separate conditions for different overloaded functions, so | |
8468 | we take just a single condition string. | |
8469 | ||
c3f6f71d | 8470 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8471 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8472 | array contents). If the function fails (error() is called), the |
8473 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8474 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8475 | |
8476 | static void | |
8cdf0e15 | 8477 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8478 | struct linespec_result *canonical, |
e1e01040 PA |
8479 | gdb::unique_xmalloc_ptr<char> cond_string, |
8480 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8481 | enum bptype type, enum bpdisp disposition, |
8482 | int thread, int task, int ignore_count, | |
c0a91b2b | 8483 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8484 | int enabled, int internal, unsigned flags) |
c906108c | 8485 | { |
f8eba3c6 | 8486 | if (canonical->pre_expanded) |
6c5b2ebe | 8487 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8488 | |
6c5b2ebe | 8489 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8490 | { |
f00aae0f | 8491 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8492 | 'break', without arguments. */ |
ffc2605c | 8493 | event_location_up location |
f00aae0f | 8494 | = (canonical->location != NULL |
8e9e35b1 | 8495 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8496 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8497 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8498 | |
6c5b2ebe | 8499 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8500 | std::move (location), |
e1e01040 PA |
8501 | std::move (filter_string), |
8502 | std::move (cond_string), | |
8503 | std::move (extra_string), | |
e7e0cddf | 8504 | type, disposition, |
84f4c1fe | 8505 | thread, task, ignore_count, ops, |
44f238bb | 8506 | from_tty, enabled, internal, flags, |
56435ebe | 8507 | canonical->special_display); |
c3f6f71d | 8508 | } |
c3f6f71d | 8509 | } |
c906108c | 8510 | |
f00aae0f | 8511 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8512 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8513 | addresses found. LOCATION points to the end of the SAL (for |
8514 | linespec locations). | |
9998af43 TJB |
8515 | |
8516 | The array and the line spec strings are allocated on the heap, it is | |
8517 | the caller's responsibility to free them. */ | |
c906108c | 8518 | |
b9362cc7 | 8519 | static void |
626d2320 | 8520 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 8521 | struct linespec_result *canonical) |
c3f6f71d | 8522 | { |
f00aae0f KS |
8523 | struct symtab_and_line cursal; |
8524 | ||
8525 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8526 | { | |
a20714ff | 8527 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8528 | |
a20714ff | 8529 | if (spec == NULL) |
f00aae0f KS |
8530 | { |
8531 | /* The last displayed codepoint, if it's valid, is our default | |
8532 | breakpoint address. */ | |
8533 | if (last_displayed_sal_is_valid ()) | |
8534 | { | |
f00aae0f KS |
8535 | /* Set sal's pspace, pc, symtab, and line to the values |
8536 | corresponding to the last call to print_frame_info. | |
8537 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8538 | as the breakpoint line number is inappropriate otherwise. | |
8539 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8540 | symtab_and_line sal = get_last_displayed_sal (); |
8541 | CORE_ADDR pc = sal.pc; | |
8542 | ||
f00aae0f KS |
8543 | sal = find_pc_line (pc, 0); |
8544 | ||
8545 | /* "break" without arguments is equivalent to "break *PC" | |
8546 | where PC is the last displayed codepoint's address. So | |
8547 | make sure to set sal.explicit_pc to prevent GDB from | |
8548 | trying to expand the list of sals to include all other | |
8549 | instances with the same symtab and line. */ | |
8550 | sal.pc = pc; | |
8551 | sal.explicit_pc = 1; | |
8552 | ||
6c5b2ebe PA |
8553 | struct linespec_sals lsal; |
8554 | lsal.sals = {sal}; | |
f00aae0f KS |
8555 | lsal.canonical = NULL; |
8556 | ||
6c5b2ebe | 8557 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8558 | return; |
8559 | } | |
8560 | else | |
8561 | error (_("No default breakpoint address now.")); | |
c906108c | 8562 | } |
c906108c | 8563 | } |
f00aae0f KS |
8564 | |
8565 | /* Force almost all breakpoints to be in terms of the | |
8566 | current_source_symtab (which is decode_line_1's default). | |
8567 | This should produce the results we want almost all of the | |
8568 | time while leaving default_breakpoint_* alone. | |
8569 | ||
8570 | ObjC: However, don't match an Objective-C method name which | |
8571 | may have a '+' or '-' succeeded by a '['. */ | |
8572 | cursal = get_current_source_symtab_and_line (); | |
8573 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8574 | { |
a20714ff | 8575 | const char *spec = NULL; |
cc80f267 | 8576 | |
f00aae0f | 8577 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 8578 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 8579 | |
f00aae0f | 8580 | if (!cursal.symtab |
a20714ff PA |
8581 | || (spec != NULL |
8582 | && strchr ("+-", spec[0]) != NULL | |
8583 | && spec[1] != '[')) | |
f00aae0f | 8584 | { |
c2f4122d | 8585 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8586 | get_last_displayed_symtab (), |
8587 | get_last_displayed_line (), | |
8588 | canonical, NULL, NULL); | |
8589 | return; | |
8590 | } | |
c906108c | 8591 | } |
f00aae0f | 8592 | |
c2f4122d | 8593 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8594 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8595 | } |
c906108c | 8596 | |
c906108c | 8597 | |
c3f6f71d | 8598 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8599 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8600 | |
b9362cc7 | 8601 | static void |
6c5b2ebe | 8602 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8603 | { |
6c5b2ebe PA |
8604 | for (auto &sal : sals) |
8605 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8606 | } |
8607 | ||
7a697b8d SS |
8608 | /* Fast tracepoints may have restrictions on valid locations. For |
8609 | instance, a fast tracepoint using a jump instead of a trap will | |
8610 | likely have to overwrite more bytes than a trap would, and so can | |
8611 | only be placed where the instruction is longer than the jump, or a | |
8612 | multi-instruction sequence does not have a jump into the middle of | |
8613 | it, etc. */ | |
8614 | ||
8615 | static void | |
8616 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 8617 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 8618 | { |
6c5b2ebe | 8619 | for (const auto &sal : sals) |
7a697b8d | 8620 | { |
f8eba3c6 TT |
8621 | struct gdbarch *sarch; |
8622 | ||
6c5b2ebe | 8623 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
8624 | /* We fall back to GDBARCH if there is no architecture |
8625 | associated with SAL. */ | |
8626 | if (sarch == NULL) | |
8627 | sarch = gdbarch; | |
281d762b TT |
8628 | std::string msg; |
8629 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 8630 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 8631 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
8632 | } |
8633 | } | |
8634 | ||
018d34a4 VP |
8635 | /* Given TOK, a string specification of condition and thread, as |
8636 | accepted by the 'break' command, extract the condition | |
8637 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8638 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8639 | If no condition is found, *COND_STRING is set to NULL. |
8640 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8641 | |
8642 | static void | |
bbc13ae3 | 8643 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
6f781ee3 TT |
8644 | gdb::unique_xmalloc_ptr<char> *cond_string, |
8645 | int *thread, int *task, | |
8646 | gdb::unique_xmalloc_ptr<char> *rest) | |
018d34a4 | 8647 | { |
6f781ee3 | 8648 | cond_string->reset (); |
018d34a4 | 8649 | *thread = -1; |
ed1d1739 | 8650 | *task = 0; |
6f781ee3 | 8651 | rest->reset (); |
733d554a | 8652 | bool force = false; |
ed1d1739 | 8653 | |
018d34a4 VP |
8654 | while (tok && *tok) |
8655 | { | |
bbc13ae3 | 8656 | const char *end_tok; |
018d34a4 | 8657 | int toklen; |
bbc13ae3 KS |
8658 | const char *cond_start = NULL; |
8659 | const char *cond_end = NULL; | |
cc59ec59 | 8660 | |
f1735a53 | 8661 | tok = skip_spaces (tok); |
e7e0cddf SS |
8662 | |
8663 | if ((*tok == '"' || *tok == ',') && rest) | |
8664 | { | |
6f781ee3 | 8665 | rest->reset (savestring (tok, strlen (tok))); |
e7e0cddf SS |
8666 | return; |
8667 | } | |
8668 | ||
f1735a53 | 8669 | end_tok = skip_to_space (tok); |
d634f2de | 8670 | |
018d34a4 | 8671 | toklen = end_tok - tok; |
d634f2de | 8672 | |
018d34a4 VP |
8673 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8674 | { | |
8675 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
8676 | try |
8677 | { | |
8678 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
8679 | } | |
8680 | catch (const gdb_exception_error &) | |
8681 | { | |
8682 | if (!force) | |
8683 | throw; | |
8684 | else | |
8685 | tok = tok + strlen (tok); | |
8686 | } | |
018d34a4 | 8687 | cond_end = tok; |
6f781ee3 | 8688 | cond_string->reset (savestring (cond_start, cond_end - cond_start)); |
018d34a4 | 8689 | } |
733d554a TBA |
8690 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
8691 | { | |
5759831a | 8692 | tok = tok + toklen; |
733d554a TBA |
8693 | force = true; |
8694 | } | |
018d34a4 VP |
8695 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
8696 | { | |
5d5658a1 PA |
8697 | const char *tmptok; |
8698 | struct thread_info *thr; | |
d634f2de | 8699 | |
018d34a4 | 8700 | tok = end_tok + 1; |
5d5658a1 | 8701 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
8702 | if (tok == tmptok) |
8703 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 8704 | *thread = thr->global_num; |
bbc13ae3 | 8705 | tok = tmptok; |
018d34a4 | 8706 | } |
4a306c9a JB |
8707 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8708 | { | |
8709 | char *tmptok; | |
8710 | ||
8711 | tok = end_tok + 1; | |
bbc13ae3 | 8712 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
8713 | if (tok == tmptok) |
8714 | error (_("Junk after task keyword.")); | |
8715 | if (!valid_task_id (*task)) | |
b6199126 | 8716 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 8717 | tok = tmptok; |
4a306c9a | 8718 | } |
e7e0cddf SS |
8719 | else if (rest) |
8720 | { | |
6f781ee3 | 8721 | rest->reset (savestring (tok, strlen (tok))); |
ccab2054 | 8722 | return; |
e7e0cddf | 8723 | } |
018d34a4 VP |
8724 | else |
8725 | error (_("Junk at end of arguments.")); | |
8726 | } | |
8727 | } | |
8728 | ||
b5fa468f TBA |
8729 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
8730 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
8731 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
8732 | for the description of these parameters and INPUT. */ | |
8733 | ||
8734 | static void | |
8735 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
6f781ee3 TT |
8736 | const char *input, |
8737 | gdb::unique_xmalloc_ptr<char> *cond_string, | |
8738 | int *thread, int *task, | |
8739 | gdb::unique_xmalloc_ptr<char> *rest) | |
b5fa468f TBA |
8740 | { |
8741 | int num_failures = 0; | |
8742 | for (auto &sal : sals) | |
8743 | { | |
6f781ee3 | 8744 | gdb::unique_xmalloc_ptr<char> cond; |
b5fa468f TBA |
8745 | int thread_id = 0; |
8746 | int task_id = 0; | |
6f781ee3 | 8747 | gdb::unique_xmalloc_ptr<char> remaining; |
b5fa468f TBA |
8748 | |
8749 | /* Here we want to parse 'arg' to separate condition from thread | |
8750 | number. But because parsing happens in a context and the | |
8751 | contexts of sals might be different, try each until there is | |
8752 | success. Finding one successful parse is sufficient for our | |
8753 | goal. When setting the breakpoint we'll re-parse the | |
8754 | condition in the context of each sal. */ | |
8755 | try | |
8756 | { | |
8757 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
8758 | &task_id, &remaining); | |
6f781ee3 | 8759 | *cond_string = std::move (cond); |
b5fa468f TBA |
8760 | *thread = thread_id; |
8761 | *task = task_id; | |
6f781ee3 | 8762 | *rest = std::move (remaining); |
b5fa468f TBA |
8763 | break; |
8764 | } | |
8765 | catch (const gdb_exception_error &e) | |
8766 | { | |
8767 | num_failures++; | |
8768 | /* If no sal remains, do not continue. */ | |
8769 | if (num_failures == sals.size ()) | |
8770 | throw; | |
8771 | } | |
8772 | } | |
8773 | } | |
8774 | ||
0fb4aa4b PA |
8775 | /* Decode a static tracepoint marker spec. */ |
8776 | ||
6c5b2ebe | 8777 | static std::vector<symtab_and_line> |
f00aae0f | 8778 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 8779 | { |
f00aae0f KS |
8780 | const char *p = &(*arg_p)[3]; |
8781 | const char *endp; | |
0fb4aa4b | 8782 | |
f1735a53 | 8783 | p = skip_spaces (p); |
0fb4aa4b | 8784 | |
f1735a53 | 8785 | endp = skip_to_space (p); |
0fb4aa4b | 8786 | |
81b1e71c | 8787 | std::string marker_str (p, endp - p); |
0fb4aa4b | 8788 | |
5d9310c4 SM |
8789 | std::vector<static_tracepoint_marker> markers |
8790 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
8791 | if (markers.empty ()) | |
81b1e71c TT |
8792 | error (_("No known static tracepoint marker named %s"), |
8793 | marker_str.c_str ()); | |
0fb4aa4b | 8794 | |
6c5b2ebe | 8795 | std::vector<symtab_and_line> sals; |
5d9310c4 | 8796 | sals.reserve (markers.size ()); |
0fb4aa4b | 8797 | |
5d9310c4 | 8798 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 8799 | { |
5d9310c4 SM |
8800 | symtab_and_line sal = find_pc_line (marker.address, 0); |
8801 | sal.pc = marker.address; | |
6c5b2ebe | 8802 | sals.push_back (sal); |
5d9310c4 | 8803 | } |
0fb4aa4b | 8804 | |
0fb4aa4b PA |
8805 | *arg_p = endp; |
8806 | return sals; | |
8807 | } | |
8808 | ||
bac7c5cf GB |
8809 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
8810 | according to IS_TRACEPOINT. */ | |
8811 | ||
8812 | static const struct breakpoint_ops * | |
8813 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
8814 | bool is_tracepoint) | |
8815 | { | |
8816 | if (is_tracepoint) | |
8817 | { | |
8818 | if (location_type == PROBE_LOCATION) | |
8819 | return &tracepoint_probe_breakpoint_ops; | |
8820 | else | |
a0cd5f08 | 8821 | return &base_breakpoint_ops; |
bac7c5cf GB |
8822 | } |
8823 | else | |
8824 | { | |
8825 | if (location_type == PROBE_LOCATION) | |
8826 | return &bkpt_probe_breakpoint_ops; | |
8827 | else | |
a0cd5f08 | 8828 | return &base_breakpoint_ops; |
bac7c5cf GB |
8829 | } |
8830 | } | |
8831 | ||
8832 | /* See breakpoint.h. */ | |
8833 | ||
8834 | const struct breakpoint_ops * | |
8835 | breakpoint_ops_for_event_location (const struct event_location *location, | |
8836 | bool is_tracepoint) | |
8837 | { | |
8838 | if (location != nullptr) | |
8839 | return breakpoint_ops_for_event_location_type | |
8840 | (event_location_type (location), is_tracepoint); | |
a0cd5f08 | 8841 | return &base_breakpoint_ops; |
bac7c5cf GB |
8842 | } |
8843 | ||
f00aae0f | 8844 | /* See breakpoint.h. */ |
0101ce28 | 8845 | |
8cdf0e15 VP |
8846 | int |
8847 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 8848 | struct event_location *location, |
e1e01040 PA |
8849 | const char *cond_string, |
8850 | int thread, const char *extra_string, | |
10a636cc | 8851 | bool force_condition, int parse_extra, |
0fb4aa4b | 8852 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
8853 | int ignore_count, |
8854 | enum auto_boolean pending_break_support, | |
c0a91b2b | 8855 | const struct breakpoint_ops *ops, |
44f238bb PA |
8856 | int from_tty, int enabled, int internal, |
8857 | unsigned flags) | |
c3f6f71d | 8858 | { |
7efd8fc2 | 8859 | struct linespec_result canonical; |
0101ce28 | 8860 | int pending = 0; |
4a306c9a | 8861 | int task = 0; |
86b17b60 | 8862 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 8863 | |
348d480f PA |
8864 | gdb_assert (ops != NULL); |
8865 | ||
f00aae0f KS |
8866 | /* If extra_string isn't useful, set it to NULL. */ |
8867 | if (extra_string != NULL && *extra_string == '\0') | |
8868 | extra_string = NULL; | |
8869 | ||
a70b8144 | 8870 | try |
b78a6381 | 8871 | { |
03ada39e | 8872 | ops->create_sals_from_location (location, &canonical); |
b78a6381 | 8873 | } |
230d2906 | 8874 | catch (const gdb_exception_error &e) |
0101ce28 | 8875 | { |
492d29ea PA |
8876 | /* If caller is interested in rc value from parse, set |
8877 | value. */ | |
8878 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 8879 | { |
05ff989b AC |
8880 | /* If pending breakpoint support is turned off, throw |
8881 | error. */ | |
fa8d40ab JJ |
8882 | |
8883 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 8884 | throw; |
723a2275 VP |
8885 | |
8886 | exception_print (gdb_stderr, e); | |
fa8d40ab | 8887 | |
dda83cd7 | 8888 | /* If pending breakpoint support is auto query and the user |
05ff989b | 8889 | selects no, then simply return the error code. */ |
059fb39f | 8890 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
8891 | && !nquery (_("Make %s pending on future shared library load? "), |
8892 | bptype_string (type_wanted))) | |
fd9b8c24 | 8893 | return 0; |
fa8d40ab | 8894 | |
05ff989b AC |
8895 | /* At this point, either the user was queried about setting |
8896 | a pending breakpoint and selected yes, or pending | |
8897 | breakpoint behavior is on and thus a pending breakpoint | |
8898 | is defaulted on behalf of the user. */ | |
f00aae0f | 8899 | pending = 1; |
0101ce28 | 8900 | } |
492d29ea | 8901 | else |
eedc3f4f | 8902 | throw; |
0101ce28 | 8903 | } |
492d29ea | 8904 | |
6c5b2ebe | 8905 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 8906 | return 0; |
c3f6f71d | 8907 | |
c3f6f71d JM |
8908 | /* Resolve all line numbers to PC's and verify that the addresses |
8909 | are ok for the target. */ | |
0101ce28 | 8910 | if (!pending) |
f8eba3c6 | 8911 | { |
6c5b2ebe PA |
8912 | for (auto &lsal : canonical.lsals) |
8913 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 8914 | } |
c3f6f71d | 8915 | |
7a697b8d | 8916 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 8917 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 8918 | { |
6c5b2ebe PA |
8919 | for (const auto &lsal : canonical.lsals) |
8920 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 8921 | } |
7a697b8d | 8922 | |
c3f6f71d JM |
8923 | /* Verify that condition can be parsed, before setting any |
8924 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 8925 | breakpoint. */ |
0101ce28 | 8926 | if (!pending) |
c3f6f71d | 8927 | { |
e1e01040 PA |
8928 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
8929 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
8930 | ||
f00aae0f | 8931 | if (parse_extra) |
dda83cd7 | 8932 | { |
6f781ee3 TT |
8933 | gdb::unique_xmalloc_ptr<char> rest; |
8934 | gdb::unique_xmalloc_ptr<char> cond; | |
52d361e1 | 8935 | |
6c5b2ebe | 8936 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 8937 | |
b5fa468f TBA |
8938 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
8939 | &cond, &thread, &task, &rest); | |
6f781ee3 TT |
8940 | cond_string_copy = std::move (cond); |
8941 | extra_string_copy = std::move (rest); | |
dda83cd7 | 8942 | } |
2f069f6f | 8943 | else |
dda83cd7 | 8944 | { |
f00aae0f KS |
8945 | if (type_wanted != bp_dprintf |
8946 | && extra_string != NULL && *extra_string != '\0') | |
8947 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 8948 | |
10a636cc TBA |
8949 | /* Check the validity of the condition. We should error out |
8950 | if the condition is invalid at all of the locations and | |
8951 | if it is not forced. In the PARSE_EXTRA case above, this | |
8952 | check is done when parsing the EXTRA_STRING. */ | |
8953 | if (cond_string != nullptr && !force_condition) | |
8954 | { | |
8955 | int num_failures = 0; | |
8956 | const linespec_sals &lsal = canonical.lsals[0]; | |
8957 | for (const auto &sal : lsal.sals) | |
8958 | { | |
8959 | const char *cond = cond_string; | |
8960 | try | |
8961 | { | |
8962 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
8963 | /* One success is sufficient to keep going. */ | |
8964 | break; | |
8965 | } | |
8966 | catch (const gdb_exception_error &) | |
8967 | { | |
8968 | num_failures++; | |
8969 | /* If this is the last sal, error out. */ | |
8970 | if (num_failures == lsal.sals.size ()) | |
8971 | throw; | |
8972 | } | |
8973 | } | |
8974 | } | |
8975 | ||
0878d0fa YQ |
8976 | /* Create a private copy of condition string. */ |
8977 | if (cond_string) | |
e1e01040 | 8978 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
8979 | /* Create a private copy of any extra string. */ |
8980 | if (extra_string) | |
e1e01040 | 8981 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 8982 | } |
0fb4aa4b | 8983 | |
52d361e1 | 8984 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
8985 | std::move (cond_string_copy), |
8986 | std::move (extra_string_copy), | |
8987 | type_wanted, | |
d9b3f62e PA |
8988 | tempflag ? disp_del : disp_donttouch, |
8989 | thread, task, ignore_count, ops, | |
44f238bb | 8990 | from_tty, enabled, internal, flags); |
c906108c | 8991 | } |
0101ce28 JJ |
8992 | else |
8993 | { | |
73063f51 TT |
8994 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (gdbarch, |
8995 | type_wanted); | |
d28cd78a | 8996 | b->location = copy_event_location (location); |
bfccc43c | 8997 | |
f00aae0f KS |
8998 | if (parse_extra) |
8999 | b->cond_string = NULL; | |
e12c7713 MK |
9000 | else |
9001 | { | |
9002 | /* Create a private copy of condition string. */ | |
6f781ee3 TT |
9003 | b->cond_string.reset (cond_string != NULL |
9004 | ? xstrdup (cond_string) | |
9005 | : NULL); | |
15630549 | 9006 | b->thread = thread; |
e12c7713 | 9007 | } |
f00aae0f KS |
9008 | |
9009 | /* Create a private copy of any extra string. */ | |
6f781ee3 TT |
9010 | b->extra_string.reset (extra_string != NULL |
9011 | ? xstrdup (extra_string) | |
9012 | : NULL); | |
0101ce28 | 9013 | b->ignore_count = ignore_count; |
0101ce28 | 9014 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9015 | b->condition_not_parsed = 1; |
41447f92 | 9016 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9017 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9018 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9019 | b->pspace = current_program_space; |
8bea4e01 | 9020 | |
b270e6f9 | 9021 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9022 | } |
9023 | ||
6c5b2ebe | 9024 | if (canonical.lsals.size () > 1) |
95a42b64 | 9025 | { |
3e43a32a MS |
9026 | warning (_("Multiple breakpoints were set.\nUse the " |
9027 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9028 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9029 | } |
9030 | ||
44702360 | 9031 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9032 | |
9033 | return 1; | |
c3f6f71d | 9034 | } |
c906108c | 9035 | |
348d480f | 9036 | /* Set a breakpoint. |
72b2ff0e VP |
9037 | ARG is a string describing breakpoint address, |
9038 | condition, and thread. | |
9039 | FLAG specifies if a breakpoint is hardware on, | |
9040 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9041 | and BP_TEMPFLAG. */ | |
348d480f | 9042 | |
98deb0da | 9043 | static void |
f2fc3015 | 9044 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9045 | { |
72b2ff0e | 9046 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9047 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9048 | ? bp_hardware_breakpoint | |
9049 | : bp_breakpoint); | |
f00aae0f | 9050 | |
ffc2605c | 9051 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9052 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9053 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9054 | |
8cdf0e15 | 9055 | create_breakpoint (get_current_arch (), |
ffc2605c | 9056 | location.get (), |
10a636cc | 9057 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9058 | tempflag, type_wanted, |
8cdf0e15 VP |
9059 | 0 /* Ignore count */, |
9060 | pending_break_support, | |
55aa24fb | 9061 | ops, |
8cdf0e15 | 9062 | from_tty, |
84f4c1fe | 9063 | 1 /* enabled */, |
44f238bb PA |
9064 | 0 /* internal */, |
9065 | 0); | |
c906108c SS |
9066 | } |
9067 | ||
c906108c SS |
9068 | /* Helper function for break_command_1 and disassemble_command. */ |
9069 | ||
9070 | void | |
fba45db2 | 9071 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9072 | { |
9073 | CORE_ADDR pc; | |
9074 | ||
9075 | if (sal->pc == 0 && sal->symtab != NULL) | |
9076 | { | |
9077 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9078 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9079 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9080 | sal->pc = pc; |
6a048695 | 9081 | |
4a64f543 | 9082 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9083 | number, then skip the function prologue if necessary. */ |
6a048695 | 9084 | if (sal->explicit_line) |
059acae7 | 9085 | skip_prologue_sal (sal); |
c906108c SS |
9086 | } |
9087 | ||
9088 | if (sal->section == 0 && sal->symtab != NULL) | |
9089 | { | |
346d1dfe | 9090 | const struct blockvector *bv; |
3977b71f | 9091 | const struct block *b; |
c5aa993b | 9092 | struct symbol *sym; |
c906108c | 9093 | |
43f3e411 | 9094 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
c6159652 | 9095 | sal->symtab->compunit ()); |
c906108c SS |
9096 | if (bv != NULL) |
9097 | { | |
7f0df278 | 9098 | sym = block_linkage_function (b); |
c906108c SS |
9099 | if (sym != NULL) |
9100 | { | |
3c86fae3 SM |
9101 | fixup_symbol_section (sym, sal->symtab->compunit ()->objfile ()); |
9102 | sal->section | |
9103 | = sym->obj_section (sal->symtab->compunit ()->objfile ()); | |
c906108c SS |
9104 | } |
9105 | else | |
9106 | { | |
4a64f543 | 9107 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9108 | just have to look harder. This case can be executed |
9109 | if we have line numbers but no functions (as can | |
9110 | happen in assembly source). */ | |
c906108c | 9111 | |
5ed8105e | 9112 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9113 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9114 | |
5ed8105e | 9115 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9116 | if (msym.minsym) |
1db66e34 | 9117 | sal->section = msym.obj_section (); |
c906108c SS |
9118 | } |
9119 | } | |
9120 | } | |
9121 | } | |
9122 | ||
9123 | void | |
0b39b52e | 9124 | break_command (const char *arg, int from_tty) |
c906108c | 9125 | { |
db107f19 | 9126 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9127 | } |
9128 | ||
c906108c | 9129 | void |
0b39b52e | 9130 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9131 | { |
db107f19 | 9132 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9133 | } |
9134 | ||
c906108c | 9135 | static void |
0b39b52e | 9136 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9137 | { |
db107f19 | 9138 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9139 | } |
9140 | ||
9141 | static void | |
0b39b52e | 9142 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9143 | { |
db107f19 | 9144 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9145 | } |
9146 | ||
e7e0cddf SS |
9147 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9148 | with a prewired command list consisting of a single output command, | |
9149 | built from extra arguments supplied on the dprintf command | |
9150 | line. */ | |
9151 | ||
da821c7b | 9152 | static void |
0b39b52e | 9153 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9154 | { |
ffc2605c | 9155 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9156 | |
9157 | /* If non-NULL, ARG should have been advanced past the location; | |
9158 | the next character must be ','. */ | |
9159 | if (arg != NULL) | |
9160 | { | |
9161 | if (arg[0] != ',' || arg[1] == '\0') | |
9162 | error (_("Format string required")); | |
9163 | else | |
9164 | { | |
9165 | /* Skip the comma. */ | |
9166 | ++arg; | |
9167 | } | |
9168 | } | |
9169 | ||
e7e0cddf | 9170 | create_breakpoint (get_current_arch (), |
ffc2605c | 9171 | location.get (), |
10a636cc | 9172 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9173 | 0, bp_dprintf, |
9174 | 0 /* Ignore count */, | |
9175 | pending_break_support, | |
a0cd5f08 | 9176 | &base_breakpoint_ops, |
e7e0cddf SS |
9177 | from_tty, |
9178 | 1 /* enabled */, | |
9179 | 0 /* internal */, | |
9180 | 0); | |
9181 | } | |
9182 | ||
d3ce09f5 | 9183 | static void |
0b39b52e | 9184 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9185 | { |
9186 | error (_("May only run agent-printf on the target")); | |
9187 | } | |
9188 | ||
ec45bb67 | 9189 | /* Implement the "breakpoint_hit" method for ranged breakpoints. */ |
f1310107 | 9190 | |
ec45bb67 TT |
9191 | int |
9192 | ranged_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
9193 | const address_space *aspace, | |
9194 | CORE_ADDR bp_addr, | |
9195 | const target_waitstatus &ws) | |
f1310107 | 9196 | { |
c272a98c SM |
9197 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
9198 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
9199 | return 0; |
9200 | ||
f1310107 TJB |
9201 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9202 | bl->length, aspace, bp_addr); | |
9203 | } | |
9204 | ||
ec45bb67 | 9205 | /* Implement the "resources_needed" method for ranged breakpoints. */ |
f1310107 | 9206 | |
ec45bb67 TT |
9207 | int |
9208 | ranged_breakpoint::resources_needed (const struct bp_location *bl) | |
f1310107 TJB |
9209 | { |
9210 | return target_ranged_break_num_registers (); | |
9211 | } | |
9212 | ||
ec45bb67 | 9213 | /* Implement the "print_it" method for ranged breakpoints. */ |
f1310107 | 9214 | |
ec45bb67 | 9215 | enum print_stop_action |
7bd86313 | 9216 | ranged_breakpoint::print_it (const bpstat *bs) const |
f1310107 | 9217 | { |
ec45bb67 | 9218 | struct bp_location *bl = loc; |
79a45e25 | 9219 | struct ui_out *uiout = current_uiout; |
f1310107 | 9220 | |
ec45bb67 | 9221 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 TJB |
9222 | |
9223 | /* Ranged breakpoints have only one location. */ | |
9224 | gdb_assert (bl && bl->next == NULL); | |
9225 | ||
ec45bb67 | 9226 | annotate_breakpoint (number); |
f303dbd6 PA |
9227 | |
9228 | maybe_print_thread_hit_breakpoint (uiout); | |
9229 | ||
ec45bb67 | 9230 | if (disposition == disp_del) |
112e8700 | 9231 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9232 | else |
112e8700 SM |
9233 | uiout->text ("Ranged breakpoint "); |
9234 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9235 | { |
112e8700 | 9236 | uiout->field_string ("reason", |
f1310107 | 9237 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
ec45bb67 | 9238 | uiout->field_string ("disp", bpdisp_text (disposition)); |
f1310107 | 9239 | } |
ec45bb67 | 9240 | uiout->field_signed ("bkptno", number); |
112e8700 | 9241 | uiout->text (", "); |
f1310107 TJB |
9242 | |
9243 | return PRINT_SRC_AND_LOC; | |
9244 | } | |
9245 | ||
ec45bb67 | 9246 | /* Implement the "print_one" method for ranged breakpoints. */ |
f1310107 | 9247 | |
ec45bb67 | 9248 | bool |
a67bcaba | 9249 | ranged_breakpoint::print_one (bp_location **last_loc) const |
f1310107 | 9250 | { |
ec45bb67 | 9251 | struct bp_location *bl = loc; |
f1310107 | 9252 | struct value_print_options opts; |
79a45e25 | 9253 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9254 | |
9255 | /* Ranged breakpoints have only one location. */ | |
9256 | gdb_assert (bl && bl->next == NULL); | |
9257 | ||
9258 | get_user_print_options (&opts); | |
9259 | ||
9260 | if (opts.addressprint) | |
9261 | /* We don't print the address range here, it will be printed later | |
9262 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9263 | uiout->field_skip ("addr"); |
f1310107 | 9264 | annotate_field (5); |
ec45bb67 | 9265 | print_breakpoint_location (this, bl); |
f1310107 | 9266 | *last_loc = bl; |
c01e038b TT |
9267 | |
9268 | return true; | |
f1310107 TJB |
9269 | } |
9270 | ||
ec45bb67 | 9271 | /* Implement the "print_one_detail" method for ranged breakpoints. */ |
f1310107 | 9272 | |
ec45bb67 TT |
9273 | void |
9274 | ranged_breakpoint::print_one_detail (struct ui_out *uiout) const | |
f1310107 TJB |
9275 | { |
9276 | CORE_ADDR address_start, address_end; | |
ec45bb67 | 9277 | struct bp_location *bl = loc; |
d7e74731 | 9278 | string_file stb; |
f1310107 TJB |
9279 | |
9280 | gdb_assert (bl); | |
9281 | ||
9282 | address_start = bl->address; | |
9283 | address_end = address_start + bl->length - 1; | |
9284 | ||
112e8700 | 9285 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9286 | stb.printf ("[%s, %s]", |
9287 | print_core_address (bl->gdbarch, address_start), | |
9288 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9289 | uiout->field_stream ("addr", stb); |
9290 | uiout->text ("\n"); | |
f1310107 TJB |
9291 | } |
9292 | ||
ec45bb67 | 9293 | /* Implement the "print_mention" method for ranged breakpoints. */ |
f1310107 | 9294 | |
ec45bb67 | 9295 | void |
b713485d | 9296 | ranged_breakpoint::print_mention () const |
f1310107 | 9297 | { |
ec45bb67 | 9298 | struct bp_location *bl = loc; |
79a45e25 | 9299 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9300 | |
9301 | gdb_assert (bl); | |
ec45bb67 | 9302 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 | 9303 | |
2d33446d | 9304 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
ec45bb67 | 9305 | number, paddress (bl->gdbarch, bl->address), |
2d33446d | 9306 | paddress (bl->gdbarch, bl->address + bl->length - 1)); |
f1310107 TJB |
9307 | } |
9308 | ||
ec45bb67 | 9309 | /* Implement the "print_recreate" method for ranged breakpoints. */ |
f1310107 | 9310 | |
ec45bb67 | 9311 | void |
4d1ae558 | 9312 | ranged_breakpoint::print_recreate (struct ui_file *fp) const |
f1310107 | 9313 | { |
6cb06a8c | 9314 | gdb_printf (fp, "break-range %s, %s", |
ec45bb67 TT |
9315 | event_location_to_string (location.get ()), |
9316 | event_location_to_string (location_range_end.get ())); | |
04d0163c | 9317 | print_recreate_thread (fp); |
f1310107 TJB |
9318 | } |
9319 | ||
f1310107 TJB |
9320 | /* Find the address where the end of the breakpoint range should be |
9321 | placed, given the SAL of the end of the range. This is so that if | |
9322 | the user provides a line number, the end of the range is set to the | |
9323 | last instruction of the given line. */ | |
9324 | ||
9325 | static CORE_ADDR | |
9326 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9327 | { | |
9328 | CORE_ADDR end; | |
9329 | ||
9330 | /* If the user provided a PC value, use it. Otherwise, | |
9331 | find the address of the end of the given location. */ | |
9332 | if (sal.explicit_pc) | |
9333 | end = sal.pc; | |
9334 | else | |
9335 | { | |
9336 | int ret; | |
9337 | CORE_ADDR start; | |
9338 | ||
9339 | ret = find_line_pc_range (sal, &start, &end); | |
9340 | if (!ret) | |
9341 | error (_("Could not find location of the end of the range.")); | |
9342 | ||
9343 | /* find_line_pc_range returns the start of the next line. */ | |
9344 | end--; | |
9345 | } | |
9346 | ||
9347 | return end; | |
9348 | } | |
9349 | ||
9350 | /* Implement the "break-range" CLI command. */ | |
9351 | ||
9352 | static void | |
0b39b52e | 9353 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9354 | { |
f2fc3015 | 9355 | const char *arg_start; |
f1310107 TJB |
9356 | struct linespec_result canonical_start, canonical_end; |
9357 | int bp_count, can_use_bp, length; | |
9358 | CORE_ADDR end; | |
9359 | struct breakpoint *b; | |
f1310107 TJB |
9360 | |
9361 | /* We don't support software ranged breakpoints. */ | |
9362 | if (target_ranged_break_num_registers () < 0) | |
9363 | error (_("This target does not support hardware ranged breakpoints.")); | |
9364 | ||
9365 | bp_count = hw_breakpoint_used_count (); | |
9366 | bp_count += target_ranged_break_num_registers (); | |
9367 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9368 | bp_count, 0); | |
9369 | if (can_use_bp < 0) | |
9370 | error (_("Hardware breakpoints used exceeds limit.")); | |
9371 | ||
f8eba3c6 | 9372 | arg = skip_spaces (arg); |
f1310107 TJB |
9373 | if (arg == NULL || arg[0] == '\0') |
9374 | error(_("No address range specified.")); | |
9375 | ||
f8eba3c6 | 9376 | arg_start = arg; |
ffc2605c TT |
9377 | event_location_up start_location = string_to_event_location (&arg, |
9378 | current_language); | |
9379 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9380 | |
9381 | if (arg[0] != ',') | |
9382 | error (_("Too few arguments.")); | |
6c5b2ebe | 9383 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9384 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9385 | |
6c5b2ebe | 9386 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9387 | |
6c5b2ebe PA |
9388 | if (canonical_start.lsals.size () > 1 |
9389 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9390 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9391 | ||
6c5b2ebe | 9392 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9393 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9394 | |
9395 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9396 | arg = skip_spaces (arg); |
f1310107 TJB |
9397 | |
9398 | /* Parse the end location. */ | |
9399 | ||
f1310107 TJB |
9400 | arg_start = arg; |
9401 | ||
f8eba3c6 | 9402 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9403 | parse_breakpoint_sals because we need to specify the start location's |
9404 | symtab and line as the default symtab and line for the end of the | |
9405 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9406 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9407 | event_location_up end_location = string_to_event_location (&arg, |
9408 | current_language); | |
9409 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9410 | sal_start.symtab, sal_start.line, |
9411 | &canonical_end, NULL, NULL); | |
9412 | ||
6c5b2ebe | 9413 | if (canonical_end.lsals.empty ()) |
f1310107 | 9414 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9415 | |
6c5b2ebe PA |
9416 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9417 | if (canonical_end.lsals.size () > 1 | |
9418 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9419 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9420 | ||
6c5b2ebe | 9421 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9422 | |
9423 | end = find_breakpoint_range_end (sal_end); | |
9424 | if (sal_start.pc > end) | |
177b42fe | 9425 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9426 | |
9427 | length = end - sal_start.pc + 1; | |
9428 | if (length < 0) | |
9429 | /* Length overflowed. */ | |
9430 | error (_("Address range too large.")); | |
9431 | else if (length == 1) | |
9432 | { | |
9433 | /* This range is simple enough to be handled by | |
9434 | the `hbreak' command. */ | |
81b1e71c | 9435 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9436 | |
9437 | return; | |
9438 | } | |
9439 | ||
9440 | /* Now set up the breakpoint. */ | |
73063f51 | 9441 | std::unique_ptr<breakpoint> br (new ranged_breakpoint (get_current_arch ())); |
f317d1eb | 9442 | br->add_location (sal_start); |
ec45bb67 TT |
9443 | b = add_to_breakpoint_chain (std::move (br)); |
9444 | ||
f1310107 TJB |
9445 | set_breakpoint_count (breakpoint_count + 1); |
9446 | b->number = breakpoint_count; | |
9447 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9448 | b->location = std::move (start_location); |
9449 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9450 | b->loc->length = length; |
9451 | ||
f1310107 | 9452 | mention (b); |
76727919 | 9453 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9454 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9455 | } |
9456 | ||
4a64f543 MS |
9457 | /* Return non-zero if EXP is verified as constant. Returned zero |
9458 | means EXP is variable. Also the constant detection may fail for | |
9459 | some constant expressions and in such case still falsely return | |
9460 | zero. */ | |
2e6e3d9c | 9461 | |
dab72643 | 9462 | static bool |
65d79d4b SDJ |
9463 | watchpoint_exp_is_const (const struct expression *exp) |
9464 | { | |
1eaebe02 | 9465 | return exp->op->constant_p (); |
65d79d4b SDJ |
9466 | } |
9467 | ||
3a292923 | 9468 | /* Implement the "re_set" method for watchpoints. */ |
348d480f | 9469 | |
3a292923 TT |
9470 | void |
9471 | watchpoint::re_set () | |
348d480f PA |
9472 | { |
9473 | /* Watchpoint can be either on expression using entirely global | |
9474 | variables, or it can be on local variables. | |
9475 | ||
9476 | Watchpoints of the first kind are never auto-deleted, and even | |
9477 | persist across program restarts. Since they can use variables | |
9478 | from shared libraries, we need to reparse expression as libraries | |
9479 | are loaded and unloaded. | |
9480 | ||
9481 | Watchpoints on local variables can also change meaning as result | |
9482 | of solib event. For example, if a watchpoint uses both a local | |
9483 | and a global variables in expression, it's a local watchpoint, | |
9484 | but unloading of a shared library will make the expression | |
9485 | invalid. This is not a very common use case, but we still | |
9486 | re-evaluate expression, to avoid surprises to the user. | |
9487 | ||
9488 | Note that for local watchpoints, we re-evaluate it only if | |
9489 | watchpoints frame id is still valid. If it's not, it means the | |
9490 | watchpoint is out of scope and will be deleted soon. In fact, | |
9491 | I'm not sure we'll ever be called in this case. | |
9492 | ||
9493 | If a local watchpoint's frame id is still valid, then | |
3a292923 | 9494 | exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9495 | |
3a5c3e22 PA |
9496 | Don't do anything about disabled watchpoints, since they will be |
9497 | reevaluated again when enabled. */ | |
3a292923 | 9498 | update_watchpoint (this, 1 /* reparse */); |
348d480f PA |
9499 | } |
9500 | ||
3a292923 | 9501 | /* Implement the "insert" method for hardware watchpoints. */ |
77b06cd7 | 9502 | |
3a292923 TT |
9503 | int |
9504 | watchpoint::insert_location (struct bp_location *bl) | |
77b06cd7 | 9505 | { |
3a292923 | 9506 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9507 | |
9508 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9509 | cond_exp.get ()); |
77b06cd7 TJB |
9510 | } |
9511 | ||
3a292923 | 9512 | /* Implement the "remove" method for hardware watchpoints. */ |
77b06cd7 | 9513 | |
3a292923 TT |
9514 | int |
9515 | watchpoint::remove_location (struct bp_location *bl, | |
9516 | enum remove_bp_reason reason) | |
77b06cd7 | 9517 | { |
3a292923 | 9518 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9519 | |
9520 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9521 | cond_exp.get ()); |
e09342b5 TJB |
9522 | } |
9523 | ||
3a292923 TT |
9524 | int |
9525 | watchpoint::breakpoint_hit (const struct bp_location *bl, | |
9526 | const address_space *aspace, CORE_ADDR bp_addr, | |
9527 | const target_waitstatus &ws) | |
e09342b5 | 9528 | { |
348d480f | 9529 | struct breakpoint *b = bl->owner; |
77b06cd7 | 9530 | |
348d480f PA |
9531 | /* Continuable hardware watchpoints are treated as non-existent if the |
9532 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9533 | some data address). Otherwise gdb won't stop on a break instruction | |
9534 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9535 | been defined. Also skip watchpoints which we know did not trigger | |
9536 | (did not match the data address). */ | |
9537 | if (is_hardware_watchpoint (b) | |
3a292923 | 9538 | && watchpoint_triggered == watch_triggered_no) |
348d480f | 9539 | return 0; |
9c06b0b4 | 9540 | |
348d480f | 9541 | return 1; |
9c06b0b4 TJB |
9542 | } |
9543 | ||
3a292923 TT |
9544 | void |
9545 | watchpoint::check_status (bpstat *bs) | |
9c06b0b4 | 9546 | { |
348d480f | 9547 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9548 | |
348d480f | 9549 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9550 | } |
9551 | ||
3a292923 TT |
9552 | /* Implement the "resources_needed" method for hardware |
9553 | watchpoints. */ | |
9c06b0b4 | 9554 | |
3a292923 TT |
9555 | int |
9556 | watchpoint::resources_needed (const struct bp_location *bl) | |
9c06b0b4 | 9557 | { |
3a292923 | 9558 | int length = exact? 1 : bl->length; |
348d480f PA |
9559 | |
9560 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9561 | } |
9562 | ||
3a292923 TT |
9563 | /* Implement the "works_in_software_mode" method for hardware |
9564 | watchpoints. */ | |
9c06b0b4 | 9565 | |
5a61e176 | 9566 | bool |
3a292923 | 9567 | watchpoint::works_in_software_mode () const |
9c06b0b4 | 9568 | { |
efa80663 | 9569 | /* Read and access watchpoints only work with hardware support. */ |
3a292923 | 9570 | return type == bp_watchpoint || type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
9571 | } |
9572 | ||
3a292923 | 9573 | enum print_stop_action |
7bd86313 | 9574 | watchpoint::print_it (const bpstat *bs) const |
9c06b0b4 | 9575 | { |
348d480f | 9576 | struct breakpoint *b; |
348d480f | 9577 | enum print_stop_action result; |
79a45e25 | 9578 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9579 | |
9580 | gdb_assert (bs->bp_location_at != NULL); | |
9581 | ||
348d480f PA |
9582 | b = bs->breakpoint_at; |
9583 | ||
f303dbd6 PA |
9584 | annotate_watchpoint (b->number); |
9585 | maybe_print_thread_hit_breakpoint (uiout); | |
9586 | ||
d7e74731 PA |
9587 | string_file stb; |
9588 | ||
76f9c9cf | 9589 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
9590 | switch (b->type) |
9591 | { | |
348d480f | 9592 | case bp_watchpoint: |
9c06b0b4 | 9593 | case bp_hardware_watchpoint: |
112e8700 SM |
9594 | if (uiout->is_mi_like_p ()) |
9595 | uiout->field_string | |
9596 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 9597 | mention (b); |
76f9c9cf | 9598 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9599 | uiout->text ("\nOld value = "); |
850645cf | 9600 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9601 | uiout->field_stream ("old", stb); |
9602 | uiout->text ("\nNew value = "); | |
3a292923 | 9603 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9604 | uiout->field_stream ("new", stb); |
9605 | uiout->text ("\n"); | |
348d480f PA |
9606 | /* More than one watchpoint may have been triggered. */ |
9607 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
9608 | break; |
9609 | ||
9610 | case bp_read_watchpoint: | |
112e8700 SM |
9611 | if (uiout->is_mi_like_p ()) |
9612 | uiout->field_string | |
9613 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 9614 | mention (b); |
76f9c9cf | 9615 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9616 | uiout->text ("\nValue = "); |
3a292923 | 9617 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9618 | uiout->field_stream ("value", stb); |
9619 | uiout->text ("\n"); | |
348d480f | 9620 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9621 | break; |
9622 | ||
9623 | case bp_access_watchpoint: | |
348d480f PA |
9624 | if (bs->old_val != NULL) |
9625 | { | |
112e8700 SM |
9626 | if (uiout->is_mi_like_p ()) |
9627 | uiout->field_string | |
9628 | ("reason", | |
348d480f PA |
9629 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9630 | mention (b); | |
76f9c9cf | 9631 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9632 | uiout->text ("\nOld value = "); |
850645cf | 9633 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9634 | uiout->field_stream ("old", stb); |
9635 | uiout->text ("\nNew value = "); | |
348d480f PA |
9636 | } |
9637 | else | |
9638 | { | |
9639 | mention (b); | |
112e8700 SM |
9640 | if (uiout->is_mi_like_p ()) |
9641 | uiout->field_string | |
9642 | ("reason", | |
348d480f | 9643 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 9644 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9645 | uiout->text ("\nValue = "); |
348d480f | 9646 | } |
3a292923 | 9647 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9648 | uiout->field_stream ("new", stb); |
9649 | uiout->text ("\n"); | |
348d480f | 9650 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9651 | break; |
9652 | default: | |
348d480f | 9653 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9654 | } |
9655 | ||
348d480f PA |
9656 | return result; |
9657 | } | |
9658 | ||
3a292923 | 9659 | /* Implement the "print_mention" method for hardware watchpoints. */ |
348d480f | 9660 | |
3a292923 | 9661 | void |
b713485d | 9662 | watchpoint::print_mention () const |
348d480f | 9663 | { |
79a45e25 | 9664 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9665 | const char *tuple_name; |
348d480f | 9666 | |
3a292923 | 9667 | switch (type) |
348d480f PA |
9668 | { |
9669 | case bp_watchpoint: | |
112e8700 | 9670 | uiout->text ("Watchpoint "); |
46b9c129 | 9671 | tuple_name = "wpt"; |
348d480f PA |
9672 | break; |
9673 | case bp_hardware_watchpoint: | |
112e8700 | 9674 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 9675 | tuple_name = "wpt"; |
348d480f PA |
9676 | break; |
9677 | case bp_read_watchpoint: | |
112e8700 | 9678 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 9679 | tuple_name = "hw-rwpt"; |
348d480f PA |
9680 | break; |
9681 | case bp_access_watchpoint: | |
112e8700 | 9682 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 9683 | tuple_name = "hw-awpt"; |
348d480f PA |
9684 | break; |
9685 | default: | |
9686 | internal_error (__FILE__, __LINE__, | |
9687 | _("Invalid hardware watchpoint type.")); | |
9688 | } | |
9689 | ||
46b9c129 | 9690 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9691 | uiout->field_signed ("number", number); |
112e8700 | 9692 | uiout->text (": "); |
3a292923 | 9693 | uiout->field_string ("exp", exp_string.get ()); |
348d480f PA |
9694 | } |
9695 | ||
3a292923 | 9696 | /* Implement the "print_recreate" method for watchpoints. */ |
348d480f | 9697 | |
3a292923 | 9698 | void |
4d1ae558 | 9699 | watchpoint::print_recreate (struct ui_file *fp) const |
348d480f | 9700 | { |
3a292923 | 9701 | switch (type) |
348d480f PA |
9702 | { |
9703 | case bp_watchpoint: | |
9704 | case bp_hardware_watchpoint: | |
6cb06a8c | 9705 | gdb_printf (fp, "watch"); |
348d480f PA |
9706 | break; |
9707 | case bp_read_watchpoint: | |
6cb06a8c | 9708 | gdb_printf (fp, "rwatch"); |
348d480f PA |
9709 | break; |
9710 | case bp_access_watchpoint: | |
6cb06a8c | 9711 | gdb_printf (fp, "awatch"); |
348d480f PA |
9712 | break; |
9713 | default: | |
9714 | internal_error (__FILE__, __LINE__, | |
9715 | _("Invalid watchpoint type.")); | |
9716 | } | |
9717 | ||
3a292923 | 9718 | gdb_printf (fp, " %s", exp_string.get ()); |
04d0163c | 9719 | print_recreate_thread (fp); |
348d480f PA |
9720 | } |
9721 | ||
3a292923 | 9722 | /* Implement the "explains_signal" method for watchpoints. */ |
427cd150 | 9723 | |
a6860f3a | 9724 | bool |
3a292923 | 9725 | watchpoint::explains_signal (enum gdb_signal sig) |
427cd150 TT |
9726 | { |
9727 | /* A software watchpoint cannot cause a signal other than | |
9728 | GDB_SIGNAL_TRAP. */ | |
3a292923 | 9729 | if (type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) |
a6860f3a | 9730 | return false; |
427cd150 | 9731 | |
a6860f3a | 9732 | return true; |
427cd150 TT |
9733 | } |
9734 | ||
3a292923 TT |
9735 | struct masked_watchpoint : public watchpoint |
9736 | { | |
73063f51 TT |
9737 | using watchpoint::watchpoint; |
9738 | ||
3a292923 TT |
9739 | int insert_location (struct bp_location *) override; |
9740 | int remove_location (struct bp_location *, | |
9741 | enum remove_bp_reason reason) override; | |
9742 | int resources_needed (const struct bp_location *) override; | |
5a61e176 | 9743 | bool works_in_software_mode () const override; |
7bd86313 | 9744 | enum print_stop_action print_it (const bpstat *bs) const override; |
3a292923 | 9745 | void print_one_detail (struct ui_out *) const override; |
b713485d | 9746 | void print_mention () const override; |
4d1ae558 | 9747 | void print_recreate (struct ui_file *fp) const override; |
3a292923 | 9748 | }; |
348d480f | 9749 | |
3a292923 | 9750 | /* Implement the "insert" method for masked hardware watchpoints. */ |
348d480f | 9751 | |
3a292923 TT |
9752 | int |
9753 | masked_watchpoint::insert_location (struct bp_location *bl) | |
348d480f | 9754 | { |
3a292923 | 9755 | return target_insert_mask_watchpoint (bl->address, hw_wp_mask, |
348d480f PA |
9756 | bl->watchpoint_type); |
9757 | } | |
9758 | ||
3a292923 | 9759 | /* Implement the "remove" method for masked hardware watchpoints. */ |
348d480f | 9760 | |
3a292923 TT |
9761 | int |
9762 | masked_watchpoint::remove_location (struct bp_location *bl, | |
9763 | enum remove_bp_reason reason) | |
348d480f | 9764 | { |
3a292923 | 9765 | return target_remove_mask_watchpoint (bl->address, hw_wp_mask, |
dda83cd7 | 9766 | bl->watchpoint_type); |
348d480f PA |
9767 | } |
9768 | ||
3a292923 TT |
9769 | /* Implement the "resources_needed" method for masked hardware |
9770 | watchpoints. */ | |
348d480f | 9771 | |
3a292923 TT |
9772 | int |
9773 | masked_watchpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 9774 | { |
3a292923 | 9775 | return target_masked_watch_num_registers (bl->address, hw_wp_mask); |
348d480f PA |
9776 | } |
9777 | ||
3a292923 TT |
9778 | /* Implement the "works_in_software_mode" method for masked hardware |
9779 | watchpoints. */ | |
348d480f | 9780 | |
5a61e176 | 9781 | bool |
3a292923 | 9782 | masked_watchpoint::works_in_software_mode () const |
348d480f | 9783 | { |
5a61e176 | 9784 | return false; |
348d480f PA |
9785 | } |
9786 | ||
3a292923 TT |
9787 | /* Implement the "print_it" method for masked hardware |
9788 | watchpoints. */ | |
348d480f | 9789 | |
3a292923 | 9790 | enum print_stop_action |
7bd86313 | 9791 | masked_watchpoint::print_it (const bpstat *bs) const |
348d480f PA |
9792 | { |
9793 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9794 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9795 | |
9796 | /* Masked watchpoints have only one location. */ | |
9797 | gdb_assert (b->loc && b->loc->next == NULL); | |
9798 | ||
f303dbd6 PA |
9799 | annotate_watchpoint (b->number); |
9800 | maybe_print_thread_hit_breakpoint (uiout); | |
9801 | ||
348d480f PA |
9802 | switch (b->type) |
9803 | { | |
9804 | case bp_hardware_watchpoint: | |
112e8700 SM |
9805 | if (uiout->is_mi_like_p ()) |
9806 | uiout->field_string | |
9807 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9808 | break; |
9809 | ||
9810 | case bp_read_watchpoint: | |
112e8700 SM |
9811 | if (uiout->is_mi_like_p ()) |
9812 | uiout->field_string | |
9813 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9814 | break; |
9815 | ||
9816 | case bp_access_watchpoint: | |
112e8700 SM |
9817 | if (uiout->is_mi_like_p ()) |
9818 | uiout->field_string | |
9819 | ("reason", | |
348d480f PA |
9820 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9821 | break; | |
9822 | default: | |
9823 | internal_error (__FILE__, __LINE__, | |
9824 | _("Invalid hardware watchpoint type.")); | |
9825 | } | |
9826 | ||
9827 | mention (b); | |
112e8700 | 9828 | uiout->text (_("\n\ |
9c06b0b4 TJB |
9829 | Check the underlying instruction at PC for the memory\n\ |
9830 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 9831 | uiout->text ("\n"); |
9c06b0b4 TJB |
9832 | |
9833 | /* More than one watchpoint may have been triggered. */ | |
9834 | return PRINT_UNKNOWN; | |
9835 | } | |
9836 | ||
3a292923 TT |
9837 | /* Implement the "print_one_detail" method for masked hardware |
9838 | watchpoints. */ | |
9c06b0b4 | 9839 | |
3a292923 TT |
9840 | void |
9841 | masked_watchpoint::print_one_detail (struct ui_out *uiout) const | |
9c06b0b4 TJB |
9842 | { |
9843 | /* Masked watchpoints have only one location. */ | |
3a292923 | 9844 | gdb_assert (loc && loc->next == NULL); |
9c06b0b4 | 9845 | |
112e8700 | 9846 | uiout->text ("\tmask "); |
3a292923 | 9847 | uiout->field_core_addr ("mask", loc->gdbarch, hw_wp_mask); |
112e8700 | 9848 | uiout->text ("\n"); |
9c06b0b4 TJB |
9849 | } |
9850 | ||
3a292923 TT |
9851 | /* Implement the "print_mention" method for masked hardware |
9852 | watchpoints. */ | |
9c06b0b4 | 9853 | |
3a292923 | 9854 | void |
b713485d | 9855 | masked_watchpoint::print_mention () const |
9c06b0b4 | 9856 | { |
79a45e25 | 9857 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9858 | const char *tuple_name; |
9c06b0b4 | 9859 | |
3a292923 | 9860 | switch (type) |
9c06b0b4 TJB |
9861 | { |
9862 | case bp_hardware_watchpoint: | |
112e8700 | 9863 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 9864 | tuple_name = "wpt"; |
9c06b0b4 TJB |
9865 | break; |
9866 | case bp_read_watchpoint: | |
112e8700 | 9867 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 9868 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
9869 | break; |
9870 | case bp_access_watchpoint: | |
112e8700 | 9871 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 9872 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
9873 | break; |
9874 | default: | |
9875 | internal_error (__FILE__, __LINE__, | |
9876 | _("Invalid hardware watchpoint type.")); | |
9877 | } | |
9878 | ||
46b9c129 | 9879 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9880 | uiout->field_signed ("number", number); |
112e8700 | 9881 | uiout->text (": "); |
3a292923 | 9882 | uiout->field_string ("exp", exp_string.get ()); |
9c06b0b4 TJB |
9883 | } |
9884 | ||
3a292923 TT |
9885 | /* Implement the "print_recreate" method for masked hardware |
9886 | watchpoints. */ | |
9c06b0b4 | 9887 | |
3a292923 | 9888 | void |
4d1ae558 | 9889 | masked_watchpoint::print_recreate (struct ui_file *fp) const |
9c06b0b4 | 9890 | { |
3a292923 | 9891 | switch (type) |
9c06b0b4 TJB |
9892 | { |
9893 | case bp_hardware_watchpoint: | |
6cb06a8c | 9894 | gdb_printf (fp, "watch"); |
9c06b0b4 TJB |
9895 | break; |
9896 | case bp_read_watchpoint: | |
6cb06a8c | 9897 | gdb_printf (fp, "rwatch"); |
9c06b0b4 TJB |
9898 | break; |
9899 | case bp_access_watchpoint: | |
6cb06a8c | 9900 | gdb_printf (fp, "awatch"); |
9c06b0b4 TJB |
9901 | break; |
9902 | default: | |
9903 | internal_error (__FILE__, __LINE__, | |
9904 | _("Invalid hardware watchpoint type.")); | |
9905 | } | |
9906 | ||
3a292923 TT |
9907 | gdb_printf (fp, " %s mask 0x%s", exp_string.get (), |
9908 | phex (hw_wp_mask, sizeof (CORE_ADDR))); | |
04d0163c | 9909 | print_recreate_thread (fp); |
9c06b0b4 TJB |
9910 | } |
9911 | ||
9c06b0b4 TJB |
9912 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ |
9913 | ||
f2478a7e | 9914 | static bool |
9c06b0b4 TJB |
9915 | is_masked_watchpoint (const struct breakpoint *b) |
9916 | { | |
3a292923 | 9917 | return dynamic_cast<const masked_watchpoint *> (b) != nullptr; |
9c06b0b4 TJB |
9918 | } |
9919 | ||
53a5351d | 9920 | /* accessflag: hw_write: watch write, |
dda83cd7 | 9921 | hw_read: watch read, |
53a5351d | 9922 | hw_access: watch access (read or write) */ |
c906108c | 9923 | static void |
bbc13ae3 | 9924 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 9925 | bool just_location, bool internal) |
c906108c | 9926 | { |
c1fc2657 | 9927 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 9928 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 9929 | struct value *result; |
bb9d5f81 | 9930 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
9931 | const char *exp_start = NULL; |
9932 | const char *exp_end = NULL; | |
9933 | const char *tok, *end_tok; | |
9c06b0b4 | 9934 | int toklen = -1; |
bbc13ae3 KS |
9935 | const char *cond_start = NULL; |
9936 | const char *cond_end = NULL; | |
c906108c | 9937 | enum bptype bp_type; |
37e4754d | 9938 | int thread = -1; |
9c06b0b4 TJB |
9939 | /* Flag to indicate whether we are going to use masks for |
9940 | the hardware watchpoint. */ | |
2e362716 | 9941 | bool use_mask = false; |
9c06b0b4 | 9942 | CORE_ADDR mask = 0; |
8a18382f | 9943 | int task = 0; |
c906108c | 9944 | |
37e4754d LM |
9945 | /* Make sure that we actually have parameters to parse. */ |
9946 | if (arg != NULL && arg[0] != '\0') | |
9947 | { | |
bbc13ae3 KS |
9948 | const char *value_start; |
9949 | ||
9950 | exp_end = arg + strlen (arg); | |
37e4754d | 9951 | |
9c06b0b4 TJB |
9952 | /* Look for "parameter value" pairs at the end |
9953 | of the arguments string. */ | |
bbc13ae3 | 9954 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
9955 | { |
9956 | /* Skip whitespace at the end of the argument list. */ | |
9957 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9958 | tok--; | |
9959 | ||
9960 | /* Find the beginning of the last token. | |
9961 | This is the value of the parameter. */ | |
9962 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9963 | tok--; | |
9964 | value_start = tok + 1; | |
9965 | ||
9966 | /* Skip whitespace. */ | |
9967 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9968 | tok--; | |
9969 | ||
9970 | end_tok = tok; | |
9971 | ||
9972 | /* Find the beginning of the second to last token. | |
9973 | This is the parameter itself. */ | |
9974 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9975 | tok--; | |
9976 | tok++; | |
9977 | toklen = end_tok - tok + 1; | |
9978 | ||
61012eef | 9979 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 9980 | { |
5d5658a1 | 9981 | struct thread_info *thr; |
9c06b0b4 TJB |
9982 | /* At this point we've found a "thread" token, which means |
9983 | the user is trying to set a watchpoint that triggers | |
9984 | only in a specific thread. */ | |
5d5658a1 | 9985 | const char *endp; |
37e4754d | 9986 | |
9c06b0b4 TJB |
9987 | if (thread != -1) |
9988 | error(_("You can specify only one thread.")); | |
37e4754d | 9989 | |
9c06b0b4 | 9990 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 9991 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 9992 | |
5d5658a1 | 9993 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 9994 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 9995 | invalid_thread_id_error (value_start); |
9c06b0b4 | 9996 | |
5d5658a1 | 9997 | thread = thr->global_num; |
9c06b0b4 | 9998 | } |
8a18382f TT |
9999 | else if (toklen == 4 && startswith (tok, "task")) |
10000 | { | |
10001 | char *tmp; | |
10002 | ||
10003 | task = strtol (value_start, &tmp, 0); | |
10004 | if (tmp == value_start) | |
10005 | error (_("Junk after task keyword.")); | |
10006 | if (!valid_task_id (task)) | |
10007 | error (_("Unknown task %d."), task); | |
10008 | } | |
61012eef | 10009 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10010 | { |
10011 | /* We've found a "mask" token, which means the user wants to | |
10012 | create a hardware watchpoint that is going to have the mask | |
10013 | facility. */ | |
10014 | struct value *mask_value, *mark; | |
37e4754d | 10015 | |
9c06b0b4 TJB |
10016 | if (use_mask) |
10017 | error(_("You can specify only one mask.")); | |
37e4754d | 10018 | |
2e362716 | 10019 | use_mask = just_location = true; |
37e4754d | 10020 | |
9c06b0b4 TJB |
10021 | mark = value_mark (); |
10022 | mask_value = parse_to_comma_and_eval (&value_start); | |
10023 | mask = value_as_address (mask_value); | |
10024 | value_free_to_mark (mark); | |
10025 | } | |
10026 | else | |
10027 | /* We didn't recognize what we found. We should stop here. */ | |
10028 | break; | |
37e4754d | 10029 | |
9c06b0b4 TJB |
10030 | /* Truncate the string and get rid of the "parameter value" pair before |
10031 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10032 | exp_end = tok; |
9c06b0b4 | 10033 | } |
37e4754d | 10034 | } |
bbc13ae3 KS |
10035 | else |
10036 | exp_end = arg; | |
37e4754d | 10037 | |
bbc13ae3 KS |
10038 | /* Parse the rest of the arguments. From here on out, everything |
10039 | is in terms of a newly allocated string instead of the original | |
10040 | ARG. */ | |
81b1e71c TT |
10041 | std::string expression (arg, exp_end - arg); |
10042 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10043 | innermost_block_tracker tracker; |
10044 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10045 | exp_end = arg; |
fa8a61dc TT |
10046 | /* Remove trailing whitespace from the expression before saving it. |
10047 | This makes the eventual display of the expression string a bit | |
10048 | prettier. */ | |
10049 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10050 | --exp_end; | |
10051 | ||
65d79d4b | 10052 | /* Checking if the expression is not constant. */ |
4d01a485 | 10053 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10054 | { |
10055 | int len; | |
10056 | ||
10057 | len = exp_end - exp_start; | |
10058 | while (len > 0 && isspace (exp_start[len - 1])) | |
10059 | len--; | |
10060 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10061 | } | |
10062 | ||
699bd4cf | 10063 | exp_valid_block = tracker.block (); |
b926417a | 10064 | struct value *mark = value_mark (); |
850645cf | 10065 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10066 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10067 | just_location); | |
06a64a0b | 10068 | |
850645cf | 10069 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10070 | { |
850645cf TT |
10071 | saved_bitpos = value_bitpos (val_as_value); |
10072 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10073 | } |
10074 | ||
850645cf | 10075 | value_ref_ptr val; |
06a64a0b TT |
10076 | if (just_location) |
10077 | { | |
9c06b0b4 TJB |
10078 | int ret; |
10079 | ||
06a64a0b | 10080 | exp_valid_block = NULL; |
850645cf | 10081 | val = release_value (value_addr (result)); |
06a64a0b | 10082 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10083 | |
10084 | if (use_mask) | |
10085 | { | |
850645cf | 10086 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10087 | mask); |
10088 | if (ret == -1) | |
10089 | error (_("This target does not support masked watchpoints.")); | |
10090 | else if (ret == -2) | |
10091 | error (_("Invalid mask or memory region.")); | |
10092 | } | |
06a64a0b | 10093 | } |
850645cf TT |
10094 | else if (val_as_value != NULL) |
10095 | val = release_value (val_as_value); | |
c906108c | 10096 | |
f1735a53 TT |
10097 | tok = skip_spaces (arg); |
10098 | end_tok = skip_to_space (tok); | |
c906108c SS |
10099 | |
10100 | toklen = end_tok - tok; | |
10101 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10102 | { | |
10103 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10104 | innermost_block_tracker if_tracker; |
10105 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10106 | |
10107 | /* The watchpoint expression may not be local, but the condition | |
10108 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10109 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10110 | |
c906108c SS |
10111 | cond_end = tok; |
10112 | } | |
10113 | if (*tok) | |
8a3fe4f8 | 10114 | error (_("Junk at end of command.")); |
c906108c | 10115 | |
441d7c93 PA |
10116 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10117 | ||
10118 | /* Save this because create_internal_breakpoint below invalidates | |
10119 | 'wp_frame'. */ | |
10120 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10121 | |
10122 | /* If the expression is "local", then set up a "watchpoint scope" | |
10123 | breakpoint at the point where we've left the scope of the watchpoint | |
10124 | expression. Create the scope breakpoint before the watchpoint, so | |
10125 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10126 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10127 | { |
441d7c93 PA |
10128 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10129 | ||
10130 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10131 | { |
441d7c93 PA |
10132 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10133 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10134 | ||
24b21115 | 10135 | scope_breakpoint |
441d7c93 | 10136 | = create_internal_breakpoint (caller_arch, caller_pc, |
9efa3c7f | 10137 | bp_watchpoint_scope); |
d983da9c | 10138 | |
441d7c93 PA |
10139 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10140 | wp_frame = NULL; | |
10141 | ||
edb3359d | 10142 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10143 | |
edb3359d DJ |
10144 | /* Automatically delete the breakpoint when it hits. */ |
10145 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10146 | |
edb3359d | 10147 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10148 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10149 | |
edb3359d | 10150 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10151 | scope_breakpoint->loc->gdbarch = caller_arch; |
10152 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10153 | scope_breakpoint->loc->address |
a6d9a66e UW |
10154 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10155 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10156 | scope_breakpoint->type); |
10157 | } | |
d983da9c DJ |
10158 | } |
10159 | ||
e8369a73 AB |
10160 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10161 | watchpoints here even if hardware watchpoints are turned off, a call | |
10162 | to update_watchpoint later in this function will cause the type to | |
10163 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10164 | ||
10165 | if (accessflag == hw_read) | |
10166 | bp_type = bp_read_watchpoint; | |
10167 | else if (accessflag == hw_access) | |
10168 | bp_type = bp_access_watchpoint; | |
10169 | else | |
10170 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10171 | |
3a292923 | 10172 | std::unique_ptr<watchpoint> w; |
348d480f | 10173 | if (use_mask) |
73063f51 | 10174 | w.reset (new masked_watchpoint (nullptr, bp_type)); |
348d480f | 10175 | else |
73063f51 | 10176 | w.reset (new watchpoint (nullptr, bp_type)); |
3a292923 | 10177 | |
c1fc2657 | 10178 | w->thread = thread; |
8a18382f | 10179 | w->task = task; |
c1fc2657 SM |
10180 | w->disposition = disp_donttouch; |
10181 | w->pspace = current_program_space; | |
b22e99fd | 10182 | w->exp = std::move (exp); |
3a5c3e22 PA |
10183 | w->exp_valid_block = exp_valid_block; |
10184 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10185 | if (just_location) |
10186 | { | |
850645cf TT |
10187 | struct type *t = value_type (val.get ()); |
10188 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10189 | |
43cc5389 | 10190 | w->exp_string_reparse |
a4c50be3 | 10191 | = current_language->watch_location_expression (t, addr); |
06a64a0b | 10192 | |
8579fd13 AB |
10193 | w->exp_string = xstrprintf ("-location %.*s", |
10194 | (int) (exp_end - exp_start), exp_start); | |
06a64a0b TT |
10195 | } |
10196 | else | |
a4c50be3 | 10197 | w->exp_string.reset (savestring (exp_start, exp_end - exp_start)); |
9c06b0b4 TJB |
10198 | |
10199 | if (use_mask) | |
10200 | { | |
3a5c3e22 | 10201 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10202 | } |
10203 | else | |
10204 | { | |
3a5c3e22 | 10205 | w->val = val; |
bb9d5f81 PP |
10206 | w->val_bitpos = saved_bitpos; |
10207 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10208 | w->val_valid = true; |
9c06b0b4 | 10209 | } |
77b06cd7 | 10210 | |
c906108c | 10211 | if (cond_start) |
6f781ee3 | 10212 | w->cond_string.reset (savestring (cond_start, cond_end - cond_start)); |
c906108c | 10213 | else |
c1fc2657 | 10214 | w->cond_string = 0; |
c5aa993b | 10215 | |
441d7c93 | 10216 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10217 | { |
441d7c93 | 10218 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10219 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10220 | } |
c906108c | 10221 | else |
f6bc2008 | 10222 | { |
3a5c3e22 PA |
10223 | w->watchpoint_frame = null_frame_id; |
10224 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10225 | } |
c906108c | 10226 | |
d983da9c | 10227 | if (scope_breakpoint != NULL) |
c906108c | 10228 | { |
d983da9c DJ |
10229 | /* The scope breakpoint is related to the watchpoint. We will |
10230 | need to act on them together. */ | |
c1fc2657 | 10231 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10232 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10233 | } |
d983da9c | 10234 | |
06a64a0b TT |
10235 | if (!just_location) |
10236 | value_free_to_mark (mark); | |
2d134ed3 | 10237 | |
b270e6f9 TT |
10238 | /* Finally update the new watchpoint. This creates the locations |
10239 | that should be inserted. */ | |
10240 | update_watchpoint (w.get (), 1); | |
a9634178 | 10241 | |
b270e6f9 | 10242 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10243 | } |
10244 | ||
e09342b5 | 10245 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10246 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10247 | |
c906108c | 10248 | static int |
a6535de1 | 10249 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10250 | { |
10251 | int found_memory_cnt = 0; | |
10252 | ||
10253 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10254 | if (!can_use_hw_watchpoints) |
c906108c | 10255 | return 0; |
c5aa993b | 10256 | |
a6535de1 TT |
10257 | gdb_assert (!vals.empty ()); |
10258 | struct value *head = vals[0].get (); | |
10259 | ||
5c44784c JM |
10260 | /* Make sure that the value of the expression depends only upon |
10261 | memory contents, and values computed from them within GDB. If we | |
10262 | find any register references or function calls, we can't use a | |
10263 | hardware watchpoint. | |
10264 | ||
10265 | The idea here is that evaluating an expression generates a series | |
10266 | of values, one holding the value of every subexpression. (The | |
10267 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10268 | a*b+c.) GDB's values hold almost enough information to establish | |
10269 | the criteria given above --- they identify memory lvalues, | |
10270 | register lvalues, computed values, etcetera. So we can evaluate | |
10271 | the expression, and then scan the chain of values that leaves | |
10272 | behind to decide whether we can detect any possible change to the | |
10273 | expression's final value using only hardware watchpoints. | |
10274 | ||
10275 | However, I don't think that the values returned by inferior | |
10276 | function calls are special in any way. So this function may not | |
10277 | notice that an expression involving an inferior function call | |
10278 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10279 | for (const value_ref_ptr &iter : vals) |
c906108c | 10280 | { |
a6535de1 TT |
10281 | struct value *v = iter.get (); |
10282 | ||
5c44784c | 10283 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10284 | { |
8464be76 DJ |
10285 | if (v != head && value_lazy (v)) |
10286 | /* A lazy memory lvalue in the chain is one that GDB never | |
10287 | needed to fetch; we either just used its address (e.g., | |
10288 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10289 | in `a,b'). This doesn't apply to HEAD; if that is | |
10290 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10291 | ; |
53a5351d | 10292 | else |
5c44784c JM |
10293 | { |
10294 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10295 | it with hardware watchpoints. */ |
df407dfe | 10296 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10297 | |
10298 | /* We only watch structs and arrays if user asked for it | |
10299 | explicitly, never if they just happen to appear in a | |
10300 | middle of some value chain. */ | |
10301 | if (v == head | |
78134374 SM |
10302 | || (vtype->code () != TYPE_CODE_STRUCT |
10303 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10304 | { |
42ae5230 | 10305 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10306 | int len; |
10307 | int num_regs; | |
10308 | ||
a9634178 | 10309 | len = (target_exact_watchpoints |
e09342b5 TJB |
10310 | && is_scalar_type_recursive (vtype))? |
10311 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10312 | |
e09342b5 TJB |
10313 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10314 | if (!num_regs) | |
2e70b7b9 MS |
10315 | return 0; |
10316 | else | |
e09342b5 | 10317 | found_memory_cnt += num_regs; |
2e70b7b9 | 10318 | } |
5c44784c | 10319 | } |
c5aa993b | 10320 | } |
5086187c AC |
10321 | else if (VALUE_LVAL (v) != not_lval |
10322 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10323 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10324 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10325 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10326 | } |
10327 | ||
10328 | /* The expression itself looks suitable for using a hardware | |
10329 | watchpoint, but give the target machine a chance to reject it. */ | |
10330 | return found_memory_cnt; | |
10331 | } | |
10332 | ||
8b93c638 | 10333 | void |
2e362716 | 10334 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10335 | { |
84f4c1fe | 10336 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10337 | } |
10338 | ||
a15a5258 AB |
10339 | /* Options for the watch, awatch, and rwatch commands. */ |
10340 | ||
10341 | struct watch_options | |
10342 | { | |
10343 | /* For -location. */ | |
10344 | bool location = false; | |
10345 | }; | |
10346 | ||
10347 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10348 | ||
10349 | Historically GDB always accepted both '-location' and '-l' flags for | |
10350 | these commands (both flags being synonyms). When converting to the | |
10351 | newer option scheme only '-location' is added here. That's fine (for | |
10352 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10353 | accepted, so '-l', '-loc', are now all accepted. | |
10354 | ||
10355 | What this means is that, if in the future, we add any new flag here | |
10356 | that starts with '-l' then this will break backward compatibility, so | |
10357 | please, don't do that! */ | |
10358 | ||
10359 | static const gdb::option::option_def watch_option_defs[] = { | |
10360 | gdb::option::flag_option_def<watch_options> { | |
10361 | "location", | |
10362 | [] (watch_options *opt) { return &opt->location; }, | |
10363 | N_("\ | |
10364 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10365 | -l can be used as a short form of -location."), | |
10366 | }, | |
10367 | }; | |
10368 | ||
10369 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10370 | commands. */ | |
10371 | ||
10372 | static gdb::option::option_def_group | |
10373 | make_watch_options_def_group (watch_options *opts) | |
10374 | { | |
10375 | return {{watch_option_defs}, opts}; | |
10376 | } | |
10377 | ||
06a64a0b TT |
10378 | /* A helper function that looks for the "-location" argument and then |
10379 | calls watch_command_1. */ | |
10380 | ||
10381 | static void | |
0b39b52e | 10382 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10383 | { |
a15a5258 AB |
10384 | watch_options opts; |
10385 | auto grp = make_watch_options_def_group (&opts); | |
10386 | gdb::option::process_options | |
10387 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10388 | if (arg != nullptr && *arg == '\0') | |
10389 | arg = nullptr; | |
10390 | ||
10391 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10392 | } | |
06a64a0b | 10393 | |
a15a5258 AB |
10394 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10395 | static void | |
10396 | watch_command_completer (struct cmd_list_element *ignore, | |
10397 | completion_tracker &tracker, | |
10398 | const char *text, const char * /*word*/) | |
10399 | { | |
10400 | const auto group = make_watch_options_def_group (nullptr); | |
10401 | if (gdb::option::complete_options | |
10402 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10403 | return; | |
06a64a0b | 10404 | |
a15a5258 AB |
10405 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10406 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10407 | } |
8926118c | 10408 | |
c5aa993b | 10409 | static void |
0b39b52e | 10410 | watch_command (const char *arg, int from_tty) |
c906108c | 10411 | { |
06a64a0b | 10412 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10413 | } |
10414 | ||
8b93c638 | 10415 | void |
2e362716 | 10416 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10417 | { |
84f4c1fe | 10418 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10419 | } |
8926118c | 10420 | |
c5aa993b | 10421 | static void |
0b39b52e | 10422 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10423 | { |
06a64a0b | 10424 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10425 | } |
10426 | ||
8b93c638 | 10427 | void |
2e362716 | 10428 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10429 | { |
84f4c1fe | 10430 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10431 | } |
8926118c | 10432 | |
c5aa993b | 10433 | static void |
0b39b52e | 10434 | awatch_command (const char *arg, int from_tty) |
c906108c | 10435 | { |
06a64a0b | 10436 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10437 | } |
c906108c | 10438 | \f |
c5aa993b | 10439 | |
cfc31633 PA |
10440 | /* Data for the FSM that manages the until(location)/advance commands |
10441 | in infcmd.c. Here because it uses the mechanisms of | |
10442 | breakpoints. */ | |
c906108c | 10443 | |
46e3ed7f | 10444 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10445 | { |
46e3ed7f | 10446 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10447 | int thread; |
10448 | ||
df631783 PA |
10449 | /* The breakpoint set at the return address in the caller frame, |
10450 | plus breakpoints at all the destination locations. */ | |
10451 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 10452 | |
46e3ed7f | 10453 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 10454 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
10455 | : thread_fsm (cmd_interp), |
10456 | thread (thread), | |
df631783 | 10457 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
10458 | { |
10459 | } | |
cfc31633 | 10460 | |
46e3ed7f TT |
10461 | void clean_up (struct thread_info *thread) override; |
10462 | bool should_stop (struct thread_info *thread) override; | |
10463 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10464 | }; |
10465 | ||
cfc31633 PA |
10466 | /* Implementation of the 'should_stop' FSM method for the |
10467 | until(location)/advance commands. */ | |
10468 | ||
46e3ed7f TT |
10469 | bool |
10470 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10471 | { |
df631783 PA |
10472 | for (const breakpoint_up &bp : breakpoints) |
10473 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
10474 | bp.get ()) != NULL) | |
10475 | { | |
10476 | set_finished (); | |
10477 | break; | |
10478 | } | |
cfc31633 | 10479 | |
46e3ed7f | 10480 | return true; |
cfc31633 PA |
10481 | } |
10482 | ||
10483 | /* Implementation of the 'clean_up' FSM method for the | |
10484 | until(location)/advance commands. */ | |
10485 | ||
46e3ed7f TT |
10486 | void |
10487 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10488 | { |
cfc31633 | 10489 | /* Clean up our temporary breakpoints. */ |
df631783 | 10490 | breakpoints.clear (); |
46e3ed7f | 10491 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
10492 | } |
10493 | ||
10494 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10495 | until(location)/advance commands. */ | |
10496 | ||
46e3ed7f TT |
10497 | enum async_reply_reason |
10498 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10499 | { |
10500 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10501 | } |
10502 | ||
c906108c | 10503 | void |
f2fc3015 | 10504 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10505 | { |
8556afb4 PA |
10506 | struct frame_info *frame; |
10507 | struct gdbarch *frame_gdbarch; | |
10508 | struct frame_id stack_frame_id; | |
10509 | struct frame_id caller_frame_id; | |
186c406b TT |
10510 | int thread; |
10511 | struct thread_info *tp; | |
c906108c | 10512 | |
70509625 | 10513 | clear_proceed_status (0); |
c906108c SS |
10514 | |
10515 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10516 | this function. */ |
c5aa993b | 10517 | |
ffc2605c | 10518 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 10519 | |
6c5b2ebe PA |
10520 | std::vector<symtab_and_line> sals |
10521 | = (last_displayed_sal_is_valid () | |
10522 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
10523 | get_last_displayed_symtab (), | |
10524 | get_last_displayed_line ()) | |
10525 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 10526 | NULL, NULL, 0)); |
c5aa993b | 10527 | |
df631783 | 10528 | if (sals.empty ()) |
8a3fe4f8 | 10529 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10530 | |
c906108c | 10531 | if (*arg) |
8a3fe4f8 | 10532 | error (_("Junk at end of arguments.")); |
c5aa993b | 10533 | |
186c406b | 10534 | tp = inferior_thread (); |
5d5658a1 | 10535 | thread = tp->global_num; |
186c406b | 10536 | |
8556afb4 PA |
10537 | /* Note linespec handling above invalidates the frame chain. |
10538 | Installing a breakpoint also invalidates the frame chain (as it | |
10539 | may need to switch threads), so do any frame handling before | |
10540 | that. */ | |
10541 | ||
10542 | frame = get_selected_frame (NULL); | |
10543 | frame_gdbarch = get_frame_arch (frame); | |
10544 | stack_frame_id = get_stack_frame_id (frame); | |
10545 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 10546 | |
ae66c1fc EZ |
10547 | /* Keep within the current frame, or in frames called by the current |
10548 | one. */ | |
edb3359d | 10549 | |
df631783 | 10550 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
10551 | |
10552 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
10553 | ||
883bc8d1 | 10554 | if (frame_id_p (caller_frame_id)) |
c906108c | 10555 | { |
883bc8d1 | 10556 | struct symtab_and_line sal2; |
cfc31633 | 10557 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
10558 | |
10559 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10560 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 10561 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
10562 | |
10563 | breakpoint_up caller_breakpoint | |
10564 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
10565 | caller_frame_id, bp_until); | |
10566 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 10567 | |
883bc8d1 | 10568 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 10569 | lj_deleter.emplace (thread); |
c906108c | 10570 | } |
c5aa993b | 10571 | |
c70a6932 JK |
10572 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10573 | frame = NULL; | |
10574 | ||
df631783 PA |
10575 | /* If the user told us to continue until a specified location, we |
10576 | don't specify a frame at which we need to stop. Otherwise, | |
10577 | specify the selected frame, because we want to stop only at the | |
10578 | very same frame. */ | |
10579 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
10580 | ||
10581 | for (symtab_and_line &sal : sals) | |
10582 | { | |
10583 | resolve_sal_pc (&sal); | |
10584 | ||
10585 | breakpoint_up location_breakpoint | |
10586 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
10587 | stop_frame_id, bp_until); | |
10588 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
10589 | } | |
883bc8d1 | 10590 | |
573269a8 LS |
10591 | tp->set_thread_fsm |
10592 | (std::unique_ptr<thread_fsm> | |
10593 | (new until_break_fsm (command_interp (), tp->global_num, | |
10594 | std::move (breakpoints)))); | |
f107f563 | 10595 | |
5419bdae TT |
10596 | if (lj_deleter) |
10597 | lj_deleter->release (); | |
f107f563 | 10598 | |
cfc31633 | 10599 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 10600 | } |
ae66c1fc | 10601 | |
9ac4176b | 10602 | void |
28010a5d PA |
10603 | init_ada_exception_breakpoint (struct breakpoint *b, |
10604 | struct gdbarch *gdbarch, | |
10605 | struct symtab_and_line sal, | |
f2fc3015 | 10606 | const char *addr_string, |
28010a5d | 10607 | int tempflag, |
349774ef | 10608 | int enabled, |
28010a5d | 10609 | int from_tty) |
f7f9143b | 10610 | { |
f7f9143b JB |
10611 | if (from_tty) |
10612 | { | |
5af949e3 UW |
10613 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
10614 | if (!loc_gdbarch) | |
10615 | loc_gdbarch = gdbarch; | |
10616 | ||
6c95b8df PA |
10617 | describe_other_breakpoints (loc_gdbarch, |
10618 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b | 10619 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
dda83cd7 SM |
10620 | version for exception catchpoints, because two catchpoints |
10621 | used for different exception names will use the same address. | |
10622 | In this case, a "breakpoint ... also set at..." warning is | |
10623 | unproductive. Besides, the warning phrasing is also a bit | |
10624 | inappropriate, we should use the word catchpoint, and tell | |
10625 | the user what type of catchpoint it is. The above is good | |
10626 | enough for now, though. */ | |
f7f9143b JB |
10627 | } |
10628 | ||
73063f51 | 10629 | init_raw_breakpoint (b, sal, bp_catchpoint); |
f7f9143b | 10630 | |
349774ef | 10631 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 10632 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
10633 | b->location = string_to_event_location (&addr_string, |
10634 | language_def (language_ada)); | |
f7f9143b | 10635 | b->language = language_ada; |
f7f9143b JB |
10636 | } |
10637 | ||
c906108c SS |
10638 | \f |
10639 | ||
81b1e71c | 10640 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
10641 | |
10642 | static int | |
81b1e71c | 10643 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 10644 | { |
81b1e71c TT |
10645 | uintptr_t ua = (uintptr_t) a; |
10646 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 10647 | |
81b1e71c | 10648 | if (a->number < b->number) |
8a2c437b | 10649 | return -1; |
81b1e71c | 10650 | else if (a->number > b->number) |
8a2c437b TT |
10651 | return 1; |
10652 | ||
10653 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10654 | the number 0. */ | |
10655 | if (ua < ub) | |
10656 | return -1; | |
94b0e70d | 10657 | return ua > ub ? 1 : 0; |
8a2c437b TT |
10658 | } |
10659 | ||
80f8a6eb | 10660 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10661 | |
10662 | static void | |
0b39b52e | 10663 | clear_command (const char *arg, int from_tty) |
c906108c | 10664 | { |
c906108c | 10665 | int default_match; |
c906108c | 10666 | |
6c5b2ebe PA |
10667 | std::vector<symtab_and_line> decoded_sals; |
10668 | symtab_and_line last_sal; | |
10669 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
10670 | if (arg) |
10671 | { | |
6c5b2ebe PA |
10672 | decoded_sals |
10673 | = decode_line_with_current_source (arg, | |
10674 | (DECODE_LINE_FUNFIRSTLINE | |
10675 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 10676 | default_match = 0; |
6c5b2ebe | 10677 | sals = decoded_sals; |
c906108c SS |
10678 | } |
10679 | else | |
10680 | { | |
1bfeeb0f JL |
10681 | /* Set sal's line, symtab, pc, and pspace to the values |
10682 | corresponding to the last call to print_frame_info. If the | |
10683 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 10684 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 10685 | if (last_sal.symtab == 0) |
8a3fe4f8 | 10686 | error (_("No source file specified.")); |
c906108c | 10687 | |
c906108c | 10688 | default_match = 1; |
6c5b2ebe | 10689 | sals = last_sal; |
c906108c SS |
10690 | } |
10691 | ||
4a64f543 MS |
10692 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10693 | seems, because all existing breakpoints typically have both | |
10694 | file/line and pc set. So, if clear is given file/line, we can | |
10695 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10696 | |
10697 | We only support clearing given the address explicitly | |
10698 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10699 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10700 | due to optimization, all in one block. |
4a64f543 MS |
10701 | |
10702 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10703 | PC corresponding to the same file:line, the breakpoint won't |
10704 | be cleared. We probably can still clear the breakpoint, but | |
10705 | since the other PC value is never presented to user, user | |
10706 | can only find it by guessing, and it does not seem important | |
10707 | to support that. */ | |
10708 | ||
4a64f543 MS |
10709 | /* For each line spec given, delete bps which correspond to it. Do |
10710 | it in two passes, solely to preserve the current behavior that | |
10711 | from_tty is forced true if we delete more than one | |
10712 | breakpoint. */ | |
c906108c | 10713 | |
81b1e71c | 10714 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 10715 | for (const auto &sal : sals) |
c906108c | 10716 | { |
05cba821 JK |
10717 | const char *sal_fullname; |
10718 | ||
c906108c | 10719 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
10720 | If line given (pc == 0), clear all bpts on specified line. |
10721 | If defaulting, clear all bpts on default line | |
10722 | or at default pc. | |
c5aa993b | 10723 | |
dda83cd7 | 10724 | defaulting sal.pc != 0 tests to do |
c5aa993b | 10725 | |
dda83cd7 SM |
10726 | 0 1 pc |
10727 | 1 1 pc _and_ line | |
10728 | 0 0 line | |
10729 | 1 0 <can't happen> */ | |
c906108c | 10730 | |
05cba821 JK |
10731 | sal_fullname = (sal.symtab == NULL |
10732 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 10733 | |
4a64f543 | 10734 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 10735 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 10736 | { |
0d381245 | 10737 | int match = 0; |
4a64f543 | 10738 | /* Are we going to delete b? */ |
a5c69b1e EL |
10739 | if (b->type != bp_none && !is_watchpoint (b) |
10740 | && user_breakpoint_p (b)) | |
0d381245 | 10741 | { |
40cb8ca5 | 10742 | for (bp_location *loc : b->locations ()) |
0d381245 | 10743 | { |
f8eba3c6 TT |
10744 | /* If the user specified file:line, don't allow a PC |
10745 | match. This matches historical gdb behavior. */ | |
10746 | int pc_match = (!sal.explicit_line | |
10747 | && sal.pc | |
10748 | && (loc->pspace == sal.pspace) | |
10749 | && (loc->address == sal.pc) | |
10750 | && (!section_is_overlay (loc->section) | |
10751 | || loc->section == sal.section)); | |
4aac40c8 TT |
10752 | int line_match = 0; |
10753 | ||
10754 | if ((default_match || sal.explicit_line) | |
2f202fde | 10755 | && loc->symtab != NULL |
05cba821 | 10756 | && sal_fullname != NULL |
4aac40c8 | 10757 | && sal.pspace == loc->pspace |
05cba821 JK |
10758 | && loc->line_number == sal.line |
10759 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
10760 | sal_fullname) == 0) | |
10761 | line_match = 1; | |
4aac40c8 | 10762 | |
0d381245 VP |
10763 | if (pc_match || line_match) |
10764 | { | |
10765 | match = 1; | |
10766 | break; | |
10767 | } | |
10768 | } | |
10769 | } | |
10770 | ||
10771 | if (match) | |
81b1e71c | 10772 | found.push_back (b); |
c906108c | 10773 | } |
80f8a6eb | 10774 | } |
8a2c437b | 10775 | |
80f8a6eb | 10776 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 10777 | if (found.empty ()) |
80f8a6eb MS |
10778 | { |
10779 | if (arg) | |
8a3fe4f8 | 10780 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10781 | else |
8a3fe4f8 | 10782 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10783 | } |
c906108c | 10784 | |
8a2c437b | 10785 | /* Remove duplicates from the vec. */ |
81b1e71c | 10786 | std::sort (found.begin (), found.end (), |
b926417a | 10787 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10788 | { |
b926417a | 10789 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
10790 | }); |
10791 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 10792 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10793 | { |
b926417a | 10794 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
10795 | }), |
10796 | found.end ()); | |
8a2c437b | 10797 | |
81b1e71c | 10798 | if (found.size () > 1) |
4a64f543 | 10799 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10800 | if (from_tty) |
a3f17187 | 10801 | { |
81b1e71c | 10802 | if (found.size () == 1) |
6cb06a8c | 10803 | gdb_printf (_("Deleted breakpoint ")); |
a3f17187 | 10804 | else |
6cb06a8c | 10805 | gdb_printf (_("Deleted breakpoints ")); |
a3f17187 | 10806 | } |
d6e956e5 | 10807 | |
81b1e71c | 10808 | for (breakpoint *iter : found) |
80f8a6eb | 10809 | { |
c5aa993b | 10810 | if (from_tty) |
6cb06a8c | 10811 | gdb_printf ("%d ", iter->number); |
81b1e71c | 10812 | delete_breakpoint (iter); |
c906108c | 10813 | } |
80f8a6eb | 10814 | if (from_tty) |
a11ac3b3 | 10815 | gdb_putc ('\n'); |
c906108c SS |
10816 | } |
10817 | \f | |
10818 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10819 | all breakpoints that are marked for deletion, whether hit or not. | |
10820 | This is called after any breakpoint is hit, or after errors. */ | |
10821 | ||
10822 | void | |
313f3b21 | 10823 | breakpoint_auto_delete (bpstat *bs) |
c906108c | 10824 | { |
c906108c | 10825 | for (; bs; bs = bs->next) |
f431efe5 PA |
10826 | if (bs->breakpoint_at |
10827 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10828 | && bs->stop) |
f431efe5 | 10829 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10830 | |
1428b37a | 10831 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 10832 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 10833 | delete_breakpoint (b); |
c906108c SS |
10834 | } |
10835 | ||
4a64f543 | 10836 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 10837 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
10838 | bl_address_is_meaningful says), secondarily by ordering first |
10839 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 10840 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
10841 | |
10842 | static int | |
39ef2f62 | 10843 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 10844 | { |
876fa593 | 10845 | if (a->address != b->address) |
39ef2f62 | 10846 | return a->address < b->address; |
876fa593 | 10847 | |
dea2aa5f LM |
10848 | /* Sort locations at the same address by their pspace number, keeping |
10849 | locations of the same inferior (in a multi-inferior environment) | |
10850 | grouped. */ | |
10851 | ||
10852 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 10853 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 10854 | |
876fa593 | 10855 | /* Sort permanent breakpoints first. */ |
1a853c52 | 10856 | if (a->permanent != b->permanent) |
39ef2f62 | 10857 | return a->permanent > b->permanent; |
876fa593 | 10858 | |
7f32a4d5 PA |
10859 | /* Sort by type in order to make duplicate determination easier. |
10860 | See update_global_location_list. This is kept in sync with | |
10861 | breakpoint_locations_match. */ | |
10862 | if (a->loc_type < b->loc_type) | |
10863 | return true; | |
10864 | ||
10865 | /* Likewise, for range-breakpoints, sort by length. */ | |
10866 | if (a->loc_type == bp_loc_hardware_breakpoint | |
10867 | && b->loc_type == bp_loc_hardware_breakpoint | |
10868 | && a->length < b->length) | |
10869 | return true; | |
10870 | ||
c56a97f9 JK |
10871 | /* Make the internal GDB representation stable across GDB runs |
10872 | where A and B memory inside GDB can differ. Breakpoint locations of | |
10873 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
10874 | |
10875 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 10876 | return a->owner->number < b->owner->number; |
876fa593 | 10877 | |
39ef2f62 | 10878 | return a < b; |
876fa593 JK |
10879 | } |
10880 | ||
f5336ca5 PA |
10881 | /* Set bp_locations_placed_address_before_address_max and |
10882 | bp_locations_shadow_len_after_address_max according to the current | |
10883 | content of the bp_locations array. */ | |
f7545552 TT |
10884 | |
10885 | static void | |
f5336ca5 | 10886 | bp_locations_target_extensions_update (void) |
f7545552 | 10887 | { |
f5336ca5 PA |
10888 | bp_locations_placed_address_before_address_max = 0; |
10889 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 10890 | |
48d7020b | 10891 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
10892 | { |
10893 | CORE_ADDR start, end, addr; | |
10894 | ||
10895 | if (!bp_location_has_shadow (bl)) | |
10896 | continue; | |
10897 | ||
10898 | start = bl->target_info.placed_address; | |
10899 | end = start + bl->target_info.shadow_len; | |
10900 | ||
10901 | gdb_assert (bl->address >= start); | |
10902 | addr = bl->address - start; | |
f5336ca5 PA |
10903 | if (addr > bp_locations_placed_address_before_address_max) |
10904 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
10905 | |
10906 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10907 | ||
10908 | gdb_assert (bl->address < end); | |
10909 | addr = end - bl->address; | |
f5336ca5 PA |
10910 | if (addr > bp_locations_shadow_len_after_address_max) |
10911 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 10912 | } |
f7545552 TT |
10913 | } |
10914 | ||
1e4d1764 YQ |
10915 | /* Download tracepoint locations if they haven't been. */ |
10916 | ||
10917 | static void | |
10918 | download_tracepoint_locations (void) | |
10919 | { | |
dd2e65cc | 10920 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 10921 | |
5ed8105e | 10922 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 10923 | |
f6d17b2b | 10924 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
10925 | { |
10926 | struct tracepoint *t; | |
f2a8bc8a | 10927 | int bp_location_downloaded = 0; |
1e4d1764 | 10928 | |
7ed2c994 | 10929 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
10930 | ? !may_insert_fast_tracepoints |
10931 | : !may_insert_tracepoints)) | |
10932 | continue; | |
10933 | ||
dd2e65cc YQ |
10934 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
10935 | { | |
10936 | if (target_can_download_tracepoint ()) | |
10937 | can_download_tracepoint = TRIBOOL_TRUE; | |
10938 | else | |
10939 | can_download_tracepoint = TRIBOOL_FALSE; | |
10940 | } | |
10941 | ||
10942 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
10943 | break; | |
10944 | ||
40cb8ca5 | 10945 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
10946 | { |
10947 | /* In tracepoint, locations are _never_ duplicated, so | |
10948 | should_be_inserted is equivalent to | |
10949 | unduplicated_should_be_inserted. */ | |
10950 | if (!should_be_inserted (bl) || bl->inserted) | |
10951 | continue; | |
1e4d1764 | 10952 | |
7ed2c994 | 10953 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 10954 | |
7ed2c994 | 10955 | target_download_tracepoint (bl); |
1e4d1764 | 10956 | |
7ed2c994 | 10957 | bl->inserted = 1; |
f2a8bc8a | 10958 | bp_location_downloaded = 1; |
7ed2c994 YQ |
10959 | } |
10960 | t = (struct tracepoint *) b; | |
10961 | t->number_on_target = b->number; | |
f2a8bc8a | 10962 | if (bp_location_downloaded) |
76727919 | 10963 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 10964 | } |
1e4d1764 YQ |
10965 | } |
10966 | ||
934709f0 PW |
10967 | /* Swap the insertion/duplication state between two locations. */ |
10968 | ||
10969 | static void | |
10970 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10971 | { | |
10972 | const int left_inserted = left->inserted; | |
10973 | const int left_duplicate = left->duplicate; | |
b775012e | 10974 | const int left_needs_update = left->needs_update; |
934709f0 PW |
10975 | const struct bp_target_info left_target_info = left->target_info; |
10976 | ||
1e4d1764 YQ |
10977 | /* Locations of tracepoints can never be duplicated. */ |
10978 | if (is_tracepoint (left->owner)) | |
10979 | gdb_assert (!left->duplicate); | |
10980 | if (is_tracepoint (right->owner)) | |
10981 | gdb_assert (!right->duplicate); | |
10982 | ||
934709f0 PW |
10983 | left->inserted = right->inserted; |
10984 | left->duplicate = right->duplicate; | |
b775012e | 10985 | left->needs_update = right->needs_update; |
934709f0 PW |
10986 | left->target_info = right->target_info; |
10987 | right->inserted = left_inserted; | |
10988 | right->duplicate = left_duplicate; | |
b775012e | 10989 | right->needs_update = left_needs_update; |
934709f0 PW |
10990 | right->target_info = left_target_info; |
10991 | } | |
10992 | ||
b775012e LM |
10993 | /* Force the re-insertion of the locations at ADDRESS. This is called |
10994 | once a new/deleted/modified duplicate location is found and we are evaluating | |
10995 | conditions on the target's side. Such conditions need to be updated on | |
10996 | the target. */ | |
10997 | ||
10998 | static void | |
10999 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11000 | { | |
b775012e LM |
11001 | CORE_ADDR address = 0; |
11002 | int pspace_num; | |
11003 | ||
11004 | address = bl->address; | |
11005 | pspace_num = bl->pspace->num; | |
11006 | ||
11007 | /* This is only meaningful if the target is | |
11008 | evaluating conditions and if the user has | |
11009 | opted for condition evaluation on the target's | |
11010 | side. */ | |
11011 | if (gdb_evaluates_breakpoint_condition_p () | |
11012 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11013 | return; | |
11014 | ||
11015 | /* Flag all breakpoint locations with this address and | |
11016 | the same program space as the location | |
11017 | as "its condition has changed". We need to | |
11018 | update the conditions on the target's side. */ | |
e0d9a270 | 11019 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 11020 | { |
b775012e LM |
11021 | if (!is_breakpoint (loc->owner) |
11022 | || pspace_num != loc->pspace->num) | |
11023 | continue; | |
11024 | ||
11025 | /* Flag the location appropriately. We use a different state to | |
11026 | let everyone know that we already updated the set of locations | |
11027 | with addr bl->address and program space bl->pspace. This is so | |
11028 | we don't have to keep calling these functions just to mark locations | |
11029 | that have already been marked. */ | |
11030 | loc->condition_changed = condition_updated; | |
11031 | ||
11032 | /* Free the agent expression bytecode as well. We will compute | |
11033 | it later on. */ | |
833177a4 | 11034 | loc->cond_bytecode.reset (); |
b775012e LM |
11035 | } |
11036 | } | |
7f32a4d5 | 11037 | |
44702360 PA |
11038 | /* Called whether new breakpoints are created, or existing breakpoints |
11039 | deleted, to update the global location list and recompute which | |
11040 | locations are duplicate of which. | |
b775012e | 11041 | |
04086b45 PA |
11042 | The INSERT_MODE flag determines whether locations may not, may, or |
11043 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11044 | info. */ | |
b60e7edf | 11045 | |
0d381245 | 11046 | static void |
44702360 | 11047 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11048 | { |
b775012e LM |
11049 | /* Last breakpoint location address that was marked for update. */ |
11050 | CORE_ADDR last_addr = 0; | |
11051 | /* Last breakpoint location program space that was marked for update. */ | |
11052 | int last_pspace_num = -1; | |
f7545552 | 11053 | |
2d134ed3 PA |
11054 | /* Used in the duplicates detection below. When iterating over all |
11055 | bp_locations, points to the first bp_location of a given address. | |
11056 | Breakpoints and watchpoints of different types are never | |
11057 | duplicates of each other. Keep one pointer for each type of | |
11058 | breakpoint/watchpoint, so we only need to loop over all locations | |
11059 | once. */ | |
11060 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11061 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11062 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11063 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11064 | |
f5336ca5 PA |
11065 | /* Saved former bp_locations array which we compare against the newly |
11066 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11067 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11068 | bp_locations.clear (); | |
876fa593 | 11069 | |
43892fdf | 11070 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11071 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11072 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11073 | |
11074 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11075 | breakpoint. Do this before deciding whether locations are | |
11076 | duplicates. Also do this before sorting because sorting order | |
11077 | depends on location type. */ | |
5d51cd5d SM |
11078 | for (bp_location *loc : bp_locations) |
11079 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11080 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11081 | |
5d51cd5d | 11082 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11083 | bp_location_is_less_than); |
876fa593 | 11084 | |
f5336ca5 | 11085 | bp_locations_target_extensions_update (); |
74960c60 | 11086 | |
4a64f543 MS |
11087 | /* Identify bp_location instances that are no longer present in the |
11088 | new list, and therefore should be freed. Note that it's not | |
11089 | necessary that those locations should be removed from inferior -- | |
11090 | if there's another location at the same address (previously | |
11091 | marked as duplicate), we don't need to remove/insert the | |
11092 | location. | |
876fa593 | 11093 | |
4a64f543 MS |
11094 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11095 | and former bp_location array state respectively. */ | |
876fa593 | 11096 | |
5d51cd5d SM |
11097 | size_t loc_i = 0; |
11098 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11099 | { |
e5dd4106 | 11100 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11101 | not, we have to free it. */ |
c7d46a38 | 11102 | int found_object = 0; |
20874c92 VP |
11103 | /* Tells if the location should remain inserted in the target. */ |
11104 | int keep_in_target = 0; | |
11105 | int removed = 0; | |
876fa593 | 11106 | |
4a64f543 MS |
11107 | /* Skip LOCP entries which will definitely never be needed. |
11108 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11109 | while (loc_i < bp_locations.size () |
11110 | && bp_locations[loc_i]->address < old_loc->address) | |
11111 | loc_i++; | |
c7d46a38 | 11112 | |
5d51cd5d SM |
11113 | for (size_t loc2_i = loc_i; |
11114 | (loc2_i < bp_locations.size () | |
11115 | && bp_locations[loc2_i]->address == old_loc->address); | |
11116 | loc2_i++) | |
c7d46a38 | 11117 | { |
b775012e LM |
11118 | /* Check if this is a new/duplicated location or a duplicated |
11119 | location that had its condition modified. If so, we want to send | |
11120 | its condition to the target if evaluation of conditions is taking | |
11121 | place there. */ | |
5d51cd5d | 11122 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11123 | && (last_addr != old_loc->address |
11124 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11125 | { |
5d51cd5d | 11126 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11127 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11128 | } |
b775012e | 11129 | |
5d51cd5d | 11130 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11131 | found_object = 1; |
c7d46a38 | 11132 | } |
74960c60 | 11133 | |
b775012e LM |
11134 | /* We have already handled this address, update it so that we don't |
11135 | have to go through updates again. */ | |
11136 | last_addr = old_loc->address; | |
11137 | ||
11138 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11139 | if (!found_object) | |
11140 | force_breakpoint_reinsertion (old_loc); | |
11141 | ||
4a64f543 MS |
11142 | /* If this location is no longer present, and inserted, look if |
11143 | there's maybe a new location at the same address. If so, | |
11144 | mark that one inserted, and don't remove this one. This is | |
11145 | needed so that we don't have a time window where a breakpoint | |
11146 | at certain location is not inserted. */ | |
74960c60 | 11147 | |
876fa593 | 11148 | if (old_loc->inserted) |
0d381245 | 11149 | { |
4a64f543 MS |
11150 | /* If the location is inserted now, we might have to remove |
11151 | it. */ | |
74960c60 | 11152 | |
876fa593 | 11153 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11154 | { |
4a64f543 MS |
11155 | /* The location is still present in the location list, |
11156 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11157 | keep_in_target = 1; |
74960c60 VP |
11158 | } |
11159 | else | |
11160 | { | |
b775012e LM |
11161 | /* This location still exists, but it won't be kept in the |
11162 | target since it may have been disabled. We proceed to | |
11163 | remove its target-side condition. */ | |
11164 | ||
4a64f543 MS |
11165 | /* The location is either no longer present, or got |
11166 | disabled. See if there's another location at the | |
11167 | same address, in which case we don't need to remove | |
11168 | this one from the target. */ | |
876fa593 | 11169 | |
2bdf28a0 | 11170 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11171 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11172 | { |
5d51cd5d SM |
11173 | for (size_t loc2_i = loc_i; |
11174 | (loc2_i < bp_locations.size () | |
11175 | && bp_locations[loc2_i]->address == old_loc->address); | |
11176 | loc2_i++) | |
876fa593 | 11177 | { |
5d51cd5d | 11178 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11179 | |
7f32a4d5 PA |
11180 | if (loc2 == old_loc) |
11181 | continue; | |
11182 | ||
2d134ed3 | 11183 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11184 | { |
85d721b8 PA |
11185 | /* Read watchpoint locations are switched to |
11186 | access watchpoints, if the former are not | |
11187 | supported, but the latter are. */ | |
11188 | if (is_hardware_watchpoint (old_loc->owner)) | |
11189 | { | |
11190 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11191 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11192 | } | |
11193 | ||
934709f0 PW |
11194 | /* loc2 is a duplicated location. We need to check |
11195 | if it should be inserted in case it will be | |
11196 | unduplicated. */ | |
7f32a4d5 | 11197 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11198 | { |
934709f0 | 11199 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11200 | keep_in_target = 1; |
11201 | break; | |
11202 | } | |
876fa593 JK |
11203 | } |
11204 | } | |
11205 | } | |
74960c60 VP |
11206 | } |
11207 | ||
20874c92 VP |
11208 | if (!keep_in_target) |
11209 | { | |
834c0d03 | 11210 | if (remove_breakpoint (old_loc)) |
20874c92 | 11211 | { |
4a64f543 MS |
11212 | /* This is just about all we can do. We could keep |
11213 | this location on the global list, and try to | |
11214 | remove it next time, but there's no particular | |
11215 | reason why we will succeed next time. | |
20874c92 | 11216 | |
4a64f543 MS |
11217 | Note that at this point, old_loc->owner is still |
11218 | valid, as delete_breakpoint frees the breakpoint | |
11219 | only after calling us. */ | |
6cb06a8c TT |
11220 | gdb_printf (_("warning: Error removing " |
11221 | "breakpoint %d\n"), | |
11222 | old_loc->owner->number); | |
20874c92 VP |
11223 | } |
11224 | removed = 1; | |
11225 | } | |
0d381245 | 11226 | } |
74960c60 VP |
11227 | |
11228 | if (!found_object) | |
1c5cfe86 | 11229 | { |
fbea99ea | 11230 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11231 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11232 | { |
db82e815 PA |
11233 | /* This location was removed from the target. In |
11234 | non-stop mode, a race condition is possible where | |
11235 | we've removed a breakpoint, but stop events for that | |
11236 | breakpoint are already queued and will arrive later. | |
11237 | We apply an heuristic to be able to distinguish such | |
11238 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11239 | breakpoint location for a bit, and will retire it | |
11240 | after we see some number of events. The theory here | |
11241 | is that reporting of events should, "on the average", | |
11242 | be fair, so after a while we'll see events from all | |
11243 | threads that have anything of interest, and no longer | |
11244 | need to keep this breakpoint location around. We | |
11245 | don't hold locations forever so to reduce chances of | |
11246 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11247 | SIGTRAP. | |
11248 | ||
11249 | The heuristic failing can be disastrous on | |
11250 | decr_pc_after_break targets. | |
11251 | ||
11252 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11253 | if we fail to recognize a late breakpoint SIGTRAP, | |
11254 | because events_till_retirement has reached 0 too | |
11255 | soon, we'll fail to do the PC adjustment, and report | |
11256 | a random SIGTRAP to the user. When the user resumes | |
11257 | the inferior, it will most likely immediately crash | |
2dec564e | 11258 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11259 | corrupted, because of being resumed e.g., in the |
11260 | middle of a multi-byte instruction, or skipped a | |
11261 | one-byte instruction. This was actually seen happen | |
11262 | on native x86-linux, and should be less rare on | |
11263 | targets that do not support new thread events, like | |
11264 | remote, due to the heuristic depending on | |
11265 | thread_count. | |
11266 | ||
11267 | Mistaking a random SIGTRAP for a breakpoint trap | |
11268 | causes similar symptoms (PC adjustment applied when | |
11269 | it shouldn't), but then again, playing with SIGTRAPs | |
11270 | behind the debugger's back is asking for trouble. | |
11271 | ||
11272 | Since hardware watchpoint traps are always | |
11273 | distinguishable from other traps, so we don't need to | |
11274 | apply keep hardware watchpoint moribund locations | |
11275 | around. We simply always ignore hardware watchpoint | |
11276 | traps we can no longer explain. */ | |
11277 | ||
5b6d1e4f PA |
11278 | process_stratum_target *proc_target = nullptr; |
11279 | for (inferior *inf : all_inferiors ()) | |
11280 | if (inf->pspace == old_loc->pspace) | |
11281 | { | |
11282 | proc_target = inf->process_target (); | |
11283 | break; | |
11284 | } | |
11285 | if (proc_target != nullptr) | |
11286 | old_loc->events_till_retirement | |
11287 | = 3 * (thread_count (proc_target) + 1); | |
11288 | else | |
11289 | old_loc->events_till_retirement = 1; | |
876fa593 | 11290 | old_loc->owner = NULL; |
20874c92 | 11291 | |
1123588c | 11292 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11293 | } |
11294 | else | |
f431efe5 PA |
11295 | { |
11296 | old_loc->owner = NULL; | |
11297 | decref_bp_location (&old_loc); | |
11298 | } | |
20874c92 | 11299 | } |
74960c60 | 11300 | } |
1c5cfe86 | 11301 | |
348d480f PA |
11302 | /* Rescan breakpoints at the same address and section, marking the |
11303 | first one as "first" and any others as "duplicates". This is so | |
11304 | that the bpt instruction is only inserted once. If we have a | |
11305 | permanent breakpoint at the same place as BPT, make that one the | |
11306 | official one, and the rest as duplicates. Permanent breakpoints | |
11307 | are sorted first for the same address. | |
11308 | ||
11309 | Do the same for hardware watchpoints, but also considering the | |
11310 | watchpoint's type (regular/access/read) and length. */ | |
11311 | ||
11312 | bp_loc_first = NULL; | |
11313 | wp_loc_first = NULL; | |
11314 | awp_loc_first = NULL; | |
11315 | rwp_loc_first = NULL; | |
40cb8ca5 | 11316 | |
48d7020b | 11317 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
11318 | { |
11319 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11320 | non-NULL. */ | |
348d480f | 11321 | struct bp_location **loc_first_p; |
43892fdf | 11322 | breakpoint *b = loc->owner; |
348d480f | 11323 | |
6f380991 | 11324 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11325 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11326 | /* Don't detect duplicate for tracepoint locations because they are |
11327 | never duplicated. See the comments in field `duplicate' of | |
11328 | `struct bp_location'. */ | |
348d480f | 11329 | || is_tracepoint (b)) |
b775012e LM |
11330 | { |
11331 | /* Clear the condition modification flag. */ | |
11332 | loc->condition_changed = condition_unchanged; | |
11333 | continue; | |
11334 | } | |
348d480f | 11335 | |
348d480f PA |
11336 | if (b->type == bp_hardware_watchpoint) |
11337 | loc_first_p = &wp_loc_first; | |
11338 | else if (b->type == bp_read_watchpoint) | |
11339 | loc_first_p = &rwp_loc_first; | |
11340 | else if (b->type == bp_access_watchpoint) | |
11341 | loc_first_p = &awp_loc_first; | |
11342 | else | |
11343 | loc_first_p = &bp_loc_first; | |
11344 | ||
11345 | if (*loc_first_p == NULL | |
11346 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11347 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11348 | { | |
11349 | *loc_first_p = loc; | |
11350 | loc->duplicate = 0; | |
b775012e LM |
11351 | |
11352 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11353 | { | |
11354 | loc->needs_update = 1; | |
11355 | /* Clear the condition modification flag. */ | |
11356 | loc->condition_changed = condition_unchanged; | |
11357 | } | |
348d480f PA |
11358 | continue; |
11359 | } | |
11360 | ||
934709f0 PW |
11361 | |
11362 | /* This and the above ensure the invariant that the first location | |
11363 | is not duplicated, and is the inserted one. | |
11364 | All following are marked as duplicated, and are not inserted. */ | |
11365 | if (loc->inserted) | |
11366 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11367 | loc->duplicate = 1; |
11368 | ||
b775012e LM |
11369 | /* Clear the condition modification flag. */ |
11370 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11371 | } |
11372 | ||
a25a5a45 | 11373 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11374 | { |
04086b45 | 11375 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11376 | insert_breakpoint_locations (); |
11377 | else | |
11378 | { | |
44702360 PA |
11379 | /* Even though the caller told us to not insert new |
11380 | locations, we may still need to update conditions on the | |
11381 | target's side of breakpoints that were already inserted | |
11382 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11383 | only update conditions for locations that are marked |
11384 | "needs_update". */ | |
11385 | update_inserted_breakpoint_locations (); | |
11386 | } | |
11387 | } | |
348d480f | 11388 | |
04086b45 | 11389 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11390 | download_tracepoint_locations (); |
348d480f PA |
11391 | } |
11392 | ||
11393 | void | |
11394 | breakpoint_retire_moribund (void) | |
11395 | { | |
1123588c TT |
11396 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11397 | { | |
11398 | struct bp_location *loc = moribund_locations[ix]; | |
11399 | if (--(loc->events_till_retirement) == 0) | |
11400 | { | |
11401 | decref_bp_location (&loc); | |
11402 | unordered_remove (moribund_locations, ix); | |
11403 | --ix; | |
11404 | } | |
11405 | } | |
348d480f PA |
11406 | } |
11407 | ||
11408 | static void | |
44702360 | 11409 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11410 | { |
348d480f | 11411 | |
a70b8144 | 11412 | try |
492d29ea PA |
11413 | { |
11414 | update_global_location_list (insert_mode); | |
11415 | } | |
230d2906 | 11416 | catch (const gdb_exception_error &e) |
492d29ea PA |
11417 | { |
11418 | } | |
348d480f PA |
11419 | } |
11420 | ||
11421 | /* Clear BKP from a BPS. */ | |
11422 | ||
11423 | static void | |
313f3b21 | 11424 | bpstat_remove_bp_location (bpstat *bps, struct breakpoint *bpt) |
348d480f | 11425 | { |
313f3b21 | 11426 | bpstat *bs; |
348d480f PA |
11427 | |
11428 | for (bs = bps; bs; bs = bs->next) | |
11429 | if (bs->breakpoint_at == bpt) | |
11430 | { | |
11431 | bs->breakpoint_at = NULL; | |
11432 | bs->old_val = NULL; | |
11433 | /* bs->commands will be freed later. */ | |
11434 | } | |
11435 | } | |
11436 | ||
11437 | /* Callback for iterate_over_threads. */ | |
11438 | static int | |
11439 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
11440 | { | |
9a3c8263 | 11441 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
11442 | |
11443 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
11444 | return 0; | |
11445 | } | |
11446 | ||
c47614fe | 11447 | /* Helper for breakpoint and tracepoint breakpoint->mention |
348d480f PA |
11448 | callbacks. */ |
11449 | ||
11450 | static void | |
b713485d | 11451 | say_where (const breakpoint *b) |
348d480f PA |
11452 | { |
11453 | struct value_print_options opts; | |
11454 | ||
11455 | get_user_print_options (&opts); | |
11456 | ||
11457 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
11458 | single string. */ | |
11459 | if (b->loc == NULL) | |
11460 | { | |
f00aae0f KS |
11461 | /* For pending locations, the output differs slightly based |
11462 | on b->extra_string. If this is non-NULL, it contains either | |
11463 | a condition or dprintf arguments. */ | |
11464 | if (b->extra_string == NULL) | |
11465 | { | |
6cb06a8c TT |
11466 | gdb_printf (_(" (%s) pending."), |
11467 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
11468 | } |
11469 | else if (b->type == bp_dprintf) | |
11470 | { | |
6cb06a8c TT |
11471 | gdb_printf (_(" (%s,%s) pending."), |
11472 | event_location_to_string (b->location.get ()), | |
11473 | b->extra_string.get ()); | |
f00aae0f KS |
11474 | } |
11475 | else | |
11476 | { | |
6cb06a8c TT |
11477 | gdb_printf (_(" (%s %s) pending."), |
11478 | event_location_to_string (b->location.get ()), | |
11479 | b->extra_string.get ()); | |
f00aae0f | 11480 | } |
348d480f PA |
11481 | } |
11482 | else | |
11483 | { | |
2f202fde | 11484 | if (opts.addressprint || b->loc->symtab == NULL) |
6cb06a8c TT |
11485 | gdb_printf (" at %ps", |
11486 | styled_string (address_style.style (), | |
11487 | paddress (b->loc->gdbarch, | |
11488 | b->loc->address))); | |
2f202fde | 11489 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
11490 | { |
11491 | /* If there is a single location, we can print the location | |
11492 | more nicely. */ | |
11493 | if (b->loc->next == NULL) | |
0bb296cb | 11494 | { |
6a831f06 PA |
11495 | const char *filename |
11496 | = symtab_to_filename_for_display (b->loc->symtab); | |
6cb06a8c TT |
11497 | gdb_printf (": file %ps, line %d.", |
11498 | styled_string (file_name_style.style (), | |
11499 | filename), | |
11500 | b->loc->line_number); | |
0bb296cb | 11501 | } |
f8eba3c6 TT |
11502 | else |
11503 | /* This is not ideal, but each location may have a | |
11504 | different file name, and this at least reflects the | |
11505 | real situation somewhat. */ | |
6cb06a8c TT |
11506 | gdb_printf (": %s.", |
11507 | event_location_to_string (b->location.get ())); | |
f8eba3c6 | 11508 | } |
348d480f PA |
11509 | |
11510 | if (b->loc->next) | |
11511 | { | |
11512 | struct bp_location *loc = b->loc; | |
11513 | int n = 0; | |
11514 | for (; loc; loc = loc->next) | |
11515 | ++n; | |
6cb06a8c | 11516 | gdb_printf (" (%d locations)", n); |
348d480f PA |
11517 | } |
11518 | } | |
11519 | } | |
11520 | ||
40cb8ca5 SM |
11521 | /* See breakpoint.h. */ |
11522 | ||
a67bcaba | 11523 | bp_location_range breakpoint::locations () const |
40cb8ca5 | 11524 | { |
9be25986 | 11525 | return bp_location_range (this->loc); |
40cb8ca5 SM |
11526 | } |
11527 | ||
4c6a92b1 TT |
11528 | struct bp_location * |
11529 | breakpoint::allocate_location () | |
11530 | { | |
11531 | return new bp_location (this); | |
11532 | } | |
11533 | ||
2060206e PA |
11534 | #define internal_error_pure_virtual_called() \ |
11535 | gdb_assert_not_reached ("pure virtual function called") | |
11536 | ||
4c6a92b1 TT |
11537 | int |
11538 | breakpoint::insert_location (struct bp_location *bl) | |
11539 | { | |
11540 | internal_error_pure_virtual_called (); | |
11541 | } | |
11542 | ||
4c6a92b1 TT |
11543 | int |
11544 | breakpoint::remove_location (struct bp_location *bl, | |
11545 | enum remove_bp_reason reason) | |
11546 | { | |
11547 | internal_error_pure_virtual_called (); | |
11548 | } | |
11549 | ||
4c6a92b1 TT |
11550 | int |
11551 | breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11552 | const address_space *aspace, | |
11553 | CORE_ADDR bp_addr, | |
11554 | const target_waitstatus &ws) | |
11555 | { | |
11556 | internal_error_pure_virtual_called (); | |
11557 | } | |
11558 | ||
4c6a92b1 TT |
11559 | int |
11560 | breakpoint::resources_needed (const struct bp_location *bl) | |
11561 | { | |
11562 | internal_error_pure_virtual_called (); | |
11563 | } | |
11564 | ||
4c6a92b1 | 11565 | enum print_stop_action |
7bd86313 | 11566 | breakpoint::print_it (const bpstat *bs) const |
4c6a92b1 TT |
11567 | { |
11568 | internal_error_pure_virtual_called (); | |
11569 | } | |
11570 | ||
4c6a92b1 | 11571 | void |
b713485d | 11572 | breakpoint::print_mention () const |
4c6a92b1 TT |
11573 | { |
11574 | internal_error_pure_virtual_called (); | |
11575 | } | |
11576 | ||
4c6a92b1 | 11577 | void |
4d1ae558 | 11578 | breakpoint::print_recreate (struct ui_file *fp) const |
4c6a92b1 TT |
11579 | { |
11580 | internal_error_pure_virtual_called (); | |
11581 | } | |
11582 | ||
4c6a92b1 TT |
11583 | std::vector<symtab_and_line> |
11584 | breakpoint::decode_location (struct event_location *location, | |
11585 | struct program_space *search_pspace) | |
11586 | { | |
11587 | internal_error_pure_virtual_called (); | |
11588 | } | |
11589 | ||
2060206e PA |
11590 | /* Default breakpoint_ops methods. */ |
11591 | ||
2b5ab5b8 TT |
11592 | void |
11593 | base_breakpoint::re_set () | |
348d480f | 11594 | { |
06edf0c0 | 11595 | /* FIXME: is this still reachable? */ |
2b5ab5b8 | 11596 | if (breakpoint_event_location_empty_p (this)) |
06edf0c0 | 11597 | { |
f00aae0f | 11598 | /* Anything without a location can't be re-set. */ |
2b5ab5b8 | 11599 | delete_breakpoint (this); |
06edf0c0 | 11600 | return; |
348d480f | 11601 | } |
06edf0c0 | 11602 | |
2b5ab5b8 | 11603 | breakpoint_re_set_default (this); |
348d480f PA |
11604 | } |
11605 | ||
2b5ab5b8 TT |
11606 | int |
11607 | base_breakpoint::insert_location (struct bp_location *bl) | |
348d480f | 11608 | { |
cd6c3b4f YQ |
11609 | CORE_ADDR addr = bl->target_info.reqstd_address; |
11610 | ||
579c6ad9 | 11611 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
11612 | bl->target_info.placed_address = addr; |
11613 | ||
5d926615 | 11614 | int result; |
348d480f | 11615 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
5d926615 | 11616 | result = target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 11617 | else |
5d926615 TT |
11618 | result = target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
11619 | ||
11620 | if (result == 0 && bl->probe.prob != nullptr) | |
11621 | { | |
11622 | /* The insertion was successful, now let's set the probe's semaphore | |
11623 | if needed. */ | |
11624 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); | |
11625 | } | |
11626 | ||
11627 | return result; | |
348d480f PA |
11628 | } |
11629 | ||
2b5ab5b8 TT |
11630 | int |
11631 | base_breakpoint::remove_location (struct bp_location *bl, | |
11632 | enum remove_bp_reason reason) | |
348d480f | 11633 | { |
5d926615 TT |
11634 | if (bl->probe.prob != nullptr) |
11635 | { | |
11636 | /* Let's clear the semaphore before removing the location. */ | |
11637 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); | |
11638 | } | |
11639 | ||
348d480f PA |
11640 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
11641 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11642 | else | |
73971819 | 11643 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
11644 | } |
11645 | ||
2b5ab5b8 TT |
11646 | int |
11647 | base_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11648 | const address_space *aspace, | |
11649 | CORE_ADDR bp_addr, | |
11650 | const target_waitstatus &ws) | |
348d480f | 11651 | { |
c272a98c SM |
11652 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
11653 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
11654 | return 0; |
11655 | ||
348d480f PA |
11656 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
11657 | aspace, bp_addr)) | |
11658 | return 0; | |
11659 | ||
11660 | if (overlay_debugging /* unmapped overlay section */ | |
11661 | && section_is_overlay (bl->section) | |
11662 | && !section_is_mapped (bl->section)) | |
11663 | return 0; | |
11664 | ||
11665 | return 1; | |
11666 | } | |
11667 | ||
f293a0b5 TT |
11668 | int |
11669 | dprintf_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11670 | const address_space *aspace, | |
11671 | CORE_ADDR bp_addr, | |
11672 | const target_waitstatus &ws) | |
cd1608cc PA |
11673 | { |
11674 | if (dprintf_style == dprintf_style_agent | |
11675 | && target_can_run_breakpoint_commands ()) | |
11676 | { | |
11677 | /* An agent-style dprintf never causes a stop. If we see a trap | |
11678 | for this address it must be for a breakpoint that happens to | |
11679 | be set at the same address. */ | |
11680 | return 0; | |
11681 | } | |
11682 | ||
f293a0b5 | 11683 | return this->ordinary_breakpoint::breakpoint_hit (bl, aspace, bp_addr, ws); |
cd1608cc PA |
11684 | } |
11685 | ||
7dd8e7ae TT |
11686 | int |
11687 | ordinary_breakpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 11688 | { |
7dd8e7ae | 11689 | gdb_assert (type == bp_hardware_breakpoint); |
348d480f PA |
11690 | |
11691 | return 1; | |
11692 | } | |
11693 | ||
7dd8e7ae | 11694 | enum print_stop_action |
7bd86313 | 11695 | ordinary_breakpoint::print_it (const bpstat *bs) const |
348d480f | 11696 | { |
348d480f | 11697 | const struct bp_location *bl; |
001c8c33 | 11698 | int bp_temp; |
79a45e25 | 11699 | struct ui_out *uiout = current_uiout; |
348d480f | 11700 | |
b6433ede | 11701 | bl = bs->bp_location_at.get (); |
348d480f | 11702 | |
7dd8e7ae | 11703 | bp_temp = disposition == disp_del; |
001c8c33 PA |
11704 | if (bl->address != bl->requested_address) |
11705 | breakpoint_adjustment_warning (bl->requested_address, | |
11706 | bl->address, | |
7dd8e7ae TT |
11707 | number, 1); |
11708 | annotate_breakpoint (number); | |
f303dbd6 PA |
11709 | maybe_print_thread_hit_breakpoint (uiout); |
11710 | ||
112e8700 | 11711 | if (uiout->is_mi_like_p ()) |
348d480f | 11712 | { |
112e8700 | 11713 | uiout->field_string ("reason", |
001c8c33 | 11714 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
7dd8e7ae | 11715 | uiout->field_string ("disp", bpdisp_text (disposition)); |
06edf0c0 | 11716 | } |
6a831f06 PA |
11717 | if (bp_temp) |
11718 | uiout->message ("Temporary breakpoint %pF, ", | |
7dd8e7ae | 11719 | signed_field ("bkptno", number)); |
6a831f06 PA |
11720 | else |
11721 | uiout->message ("Breakpoint %pF, ", | |
7dd8e7ae | 11722 | signed_field ("bkptno", number)); |
06edf0c0 | 11723 | |
001c8c33 | 11724 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11725 | } |
11726 | ||
7dd8e7ae | 11727 | void |
b713485d | 11728 | ordinary_breakpoint::print_mention () const |
06edf0c0 | 11729 | { |
112e8700 | 11730 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
11731 | return; |
11732 | ||
7dd8e7ae | 11733 | switch (type) |
06edf0c0 PA |
11734 | { |
11735 | case bp_breakpoint: | |
11736 | case bp_gnu_ifunc_resolver: | |
7dd8e7ae | 11737 | if (disposition == disp_del) |
6cb06a8c | 11738 | gdb_printf (_("Temporary breakpoint")); |
06edf0c0 | 11739 | else |
6cb06a8c | 11740 | gdb_printf (_("Breakpoint")); |
7dd8e7ae TT |
11741 | gdb_printf (_(" %d"), number); |
11742 | if (type == bp_gnu_ifunc_resolver) | |
6cb06a8c | 11743 | gdb_printf (_(" at gnu-indirect-function resolver")); |
06edf0c0 PA |
11744 | break; |
11745 | case bp_hardware_breakpoint: | |
7dd8e7ae | 11746 | gdb_printf (_("Hardware assisted breakpoint %d"), number); |
06edf0c0 | 11747 | break; |
e7e0cddf | 11748 | case bp_dprintf: |
7dd8e7ae | 11749 | gdb_printf (_("Dprintf %d"), number); |
e7e0cddf | 11750 | break; |
06edf0c0 PA |
11751 | } |
11752 | ||
7dd8e7ae | 11753 | say_where (this); |
06edf0c0 PA |
11754 | } |
11755 | ||
7dd8e7ae | 11756 | void |
4d1ae558 | 11757 | ordinary_breakpoint::print_recreate (struct ui_file *fp) const |
06edf0c0 | 11758 | { |
7dd8e7ae | 11759 | if (type == bp_breakpoint && disposition == disp_del) |
6cb06a8c | 11760 | gdb_printf (fp, "tbreak"); |
7dd8e7ae | 11761 | else if (type == bp_breakpoint) |
6cb06a8c | 11762 | gdb_printf (fp, "break"); |
7dd8e7ae TT |
11763 | else if (type == bp_hardware_breakpoint |
11764 | && disposition == disp_del) | |
6cb06a8c | 11765 | gdb_printf (fp, "thbreak"); |
7dd8e7ae | 11766 | else if (type == bp_hardware_breakpoint) |
6cb06a8c | 11767 | gdb_printf (fp, "hbreak"); |
06edf0c0 PA |
11768 | else |
11769 | internal_error (__FILE__, __LINE__, | |
7dd8e7ae | 11770 | _("unhandled breakpoint type %d"), (int) type); |
06edf0c0 | 11771 | |
7dd8e7ae | 11772 | gdb_printf (fp, " %s", event_location_to_string (location.get ())); |
f00aae0f KS |
11773 | |
11774 | /* Print out extra_string if this breakpoint is pending. It might | |
11775 | contain, for example, conditions that were set by the user. */ | |
7dd8e7ae TT |
11776 | if (loc == NULL && extra_string != NULL) |
11777 | gdb_printf (fp, " %s", extra_string.get ()); | |
f00aae0f | 11778 | |
04d0163c | 11779 | print_recreate_thread (fp); |
06edf0c0 PA |
11780 | } |
11781 | ||
2b5ab5b8 TT |
11782 | std::vector<symtab_and_line> |
11783 | base_breakpoint::decode_location (struct event_location *location, | |
11784 | struct program_space *search_pspace) | |
983af33b | 11785 | { |
5d926615 TT |
11786 | if (event_location_type (location) == PROBE_LOCATION) |
11787 | return bkpt_probe_decode_location (this, location, search_pspace); | |
11788 | ||
2b5ab5b8 | 11789 | return decode_location_default (this, location, search_pspace); |
983af33b SDJ |
11790 | } |
11791 | ||
06edf0c0 PA |
11792 | /* Virtual table for internal breakpoints. */ |
11793 | ||
c359fff5 TT |
11794 | void |
11795 | internal_breakpoint::re_set () | |
06edf0c0 | 11796 | { |
c359fff5 | 11797 | switch (type) |
06edf0c0 PA |
11798 | { |
11799 | /* Delete overlay event and longjmp master breakpoints; they | |
11800 | will be reset later by breakpoint_re_set. */ | |
11801 | case bp_overlay_event: | |
11802 | case bp_longjmp_master: | |
11803 | case bp_std_terminate_master: | |
11804 | case bp_exception_master: | |
c359fff5 | 11805 | delete_breakpoint (this); |
06edf0c0 PA |
11806 | break; |
11807 | ||
11808 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 11809 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
11810 | case bp_shlib_event: |
11811 | ||
11812 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11813 | it is set up, we do not want to touch it. */ | |
11814 | case bp_thread_event: | |
11815 | break; | |
11816 | } | |
11817 | } | |
11818 | ||
c359fff5 TT |
11819 | void |
11820 | internal_breakpoint::check_status (bpstat *bs) | |
06edf0c0 | 11821 | { |
c359fff5 | 11822 | if (type == bp_shlib_event) |
a9b3a50f PA |
11823 | { |
11824 | /* If requested, stop when the dynamic linker notifies GDB of | |
11825 | events. This allows the user to get control and place | |
11826 | breakpoints in initializer routines for dynamically loaded | |
11827 | objects (among other things). */ | |
11828 | bs->stop = stop_on_solib_events; | |
11829 | bs->print = stop_on_solib_events; | |
11830 | } | |
11831 | else | |
11832 | bs->stop = 0; | |
06edf0c0 PA |
11833 | } |
11834 | ||
c359fff5 | 11835 | enum print_stop_action |
7bd86313 | 11836 | internal_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11837 | { |
c359fff5 | 11838 | switch (type) |
06edf0c0 | 11839 | { |
348d480f PA |
11840 | case bp_shlib_event: |
11841 | /* Did we stop because the user set the stop_on_solib_events | |
11842 | variable? (If so, we report this as a generic, "Stopped due | |
11843 | to shlib event" message.) */ | |
4e9e993a | 11844 | print_solib_event (false); |
348d480f PA |
11845 | break; |
11846 | ||
11847 | case bp_thread_event: | |
11848 | /* Not sure how we will get here. | |
11849 | GDB should not stop for these breakpoints. */ | |
6cb06a8c | 11850 | gdb_printf (_("Thread Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11851 | break; |
11852 | ||
11853 | case bp_overlay_event: | |
11854 | /* By analogy with the thread event, GDB should not stop for these. */ | |
6cb06a8c | 11855 | gdb_printf (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11856 | break; |
11857 | ||
11858 | case bp_longjmp_master: | |
11859 | /* These should never be enabled. */ | |
6cb06a8c | 11860 | gdb_printf (_("Longjmp Master Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11861 | break; |
11862 | ||
11863 | case bp_std_terminate_master: | |
11864 | /* These should never be enabled. */ | |
6cb06a8c TT |
11865 | gdb_printf (_("std::terminate Master Breakpoint: " |
11866 | "gdb should not stop!\n")); | |
348d480f PA |
11867 | break; |
11868 | ||
11869 | case bp_exception_master: | |
11870 | /* These should never be enabled. */ | |
6cb06a8c TT |
11871 | gdb_printf (_("Exception Master Breakpoint: " |
11872 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11873 | break; |
11874 | } | |
11875 | ||
001c8c33 | 11876 | return PRINT_NOTHING; |
06edf0c0 PA |
11877 | } |
11878 | ||
c359fff5 | 11879 | void |
b713485d | 11880 | internal_breakpoint::print_mention () const |
06edf0c0 PA |
11881 | { |
11882 | /* Nothing to mention. These breakpoints are internal. */ | |
11883 | } | |
11884 | ||
06edf0c0 PA |
11885 | /* Virtual table for momentary breakpoints */ |
11886 | ||
1fd30a47 TT |
11887 | void |
11888 | momentary_breakpoint::re_set () | |
06edf0c0 PA |
11889 | { |
11890 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 11891 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
11892 | Otherwise these should have been blown away via the cleanup chain |
11893 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11894 | } | |
11895 | ||
1fd30a47 TT |
11896 | void |
11897 | momentary_breakpoint::check_status (bpstat *bs) | |
06edf0c0 PA |
11898 | { |
11899 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11900 | } | |
11901 | ||
1fd30a47 | 11902 | enum print_stop_action |
7bd86313 | 11903 | momentary_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11904 | { |
001c8c33 | 11905 | return PRINT_UNKNOWN; |
348d480f PA |
11906 | } |
11907 | ||
1fd30a47 | 11908 | void |
b713485d | 11909 | momentary_breakpoint::print_mention () const |
348d480f | 11910 | { |
06edf0c0 | 11911 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11912 | } |
11913 | ||
e2e4d78b JK |
11914 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
11915 | ||
11916 | It gets cleared already on the removal of the first one of such placed | |
11917 | breakpoints. This is OK as they get all removed altogether. */ | |
11918 | ||
c1fc2657 | 11919 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 11920 | { |
c1fc2657 | 11921 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 11922 | |
c1fc2657 | 11923 | if (tp != NULL) |
e2e4d78b | 11924 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
11925 | } |
11926 | ||
55aa24fb | 11927 | static void |
626d2320 | 11928 | bkpt_probe_create_sals_from_location (struct event_location *location, |
03ada39e SM |
11929 | struct linespec_result *canonical) |
11930 | ||
55aa24fb SDJ |
11931 | { |
11932 | struct linespec_sals lsal; | |
11933 | ||
c2f4122d | 11934 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
11935 | lsal.canonical |
11936 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 11937 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
11938 | } |
11939 | ||
6c5b2ebe | 11940 | static std::vector<symtab_and_line> |
f00aae0f | 11941 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 11942 | struct event_location *location, |
6c5b2ebe | 11943 | struct program_space *search_pspace) |
55aa24fb | 11944 | { |
6c5b2ebe PA |
11945 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
11946 | if (sals.empty ()) | |
55aa24fb | 11947 | error (_("probe not found")); |
6c5b2ebe | 11948 | return sals; |
55aa24fb SDJ |
11949 | } |
11950 | ||
348d480f | 11951 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 11952 | |
779dcceb TT |
11953 | void |
11954 | tracepoint::re_set () | |
348d480f | 11955 | { |
779dcceb | 11956 | breakpoint_re_set_default (this); |
348d480f | 11957 | } |
876fa593 | 11958 | |
779dcceb TT |
11959 | int |
11960 | tracepoint::breakpoint_hit (const struct bp_location *bl, | |
11961 | const address_space *aspace, CORE_ADDR bp_addr, | |
11962 | const target_waitstatus &ws) | |
348d480f PA |
11963 | { |
11964 | /* By definition, the inferior does not report stops at | |
11965 | tracepoints. */ | |
11966 | return 0; | |
74960c60 VP |
11967 | } |
11968 | ||
779dcceb TT |
11969 | void |
11970 | tracepoint::print_one_detail (struct ui_out *uiout) const | |
74960c60 | 11971 | { |
779dcceb | 11972 | if (!static_trace_marker_id.empty ()) |
348d480f | 11973 | { |
7b572efb TT |
11974 | gdb_assert (type == bp_static_tracepoint |
11975 | || type == bp_static_marker_tracepoint); | |
cc59ec59 | 11976 | |
6a831f06 PA |
11977 | uiout->message ("\tmarker id is %pF\n", |
11978 | string_field ("static-tracepoint-marker-string-id", | |
779dcceb | 11979 | static_trace_marker_id.c_str ())); |
348d480f | 11980 | } |
0d381245 VP |
11981 | } |
11982 | ||
779dcceb | 11983 | void |
b713485d | 11984 | tracepoint::print_mention () const |
a474d7c2 | 11985 | { |
112e8700 | 11986 | if (current_uiout->is_mi_like_p ()) |
348d480f | 11987 | return; |
cc59ec59 | 11988 | |
779dcceb | 11989 | switch (type) |
348d480f PA |
11990 | { |
11991 | case bp_tracepoint: | |
6cb06a8c | 11992 | gdb_printf (_("Tracepoint")); |
779dcceb | 11993 | gdb_printf (_(" %d"), number); |
348d480f PA |
11994 | break; |
11995 | case bp_fast_tracepoint: | |
6cb06a8c | 11996 | gdb_printf (_("Fast tracepoint")); |
779dcceb | 11997 | gdb_printf (_(" %d"), number); |
348d480f PA |
11998 | break; |
11999 | case bp_static_tracepoint: | |
7b572efb | 12000 | case bp_static_marker_tracepoint: |
6cb06a8c | 12001 | gdb_printf (_("Static tracepoint")); |
779dcceb | 12002 | gdb_printf (_(" %d"), number); |
348d480f PA |
12003 | break; |
12004 | default: | |
12005 | internal_error (__FILE__, __LINE__, | |
779dcceb | 12006 | _("unhandled tracepoint type %d"), (int) type); |
348d480f PA |
12007 | } |
12008 | ||
779dcceb | 12009 | say_where (this); |
a474d7c2 PA |
12010 | } |
12011 | ||
779dcceb | 12012 | void |
4d1ae558 | 12013 | tracepoint::print_recreate (struct ui_file *fp) const |
a474d7c2 | 12014 | { |
779dcceb | 12015 | if (type == bp_fast_tracepoint) |
6cb06a8c | 12016 | gdb_printf (fp, "ftrace"); |
7b572efb TT |
12017 | else if (type == bp_static_tracepoint |
12018 | || type == bp_static_marker_tracepoint) | |
6cb06a8c | 12019 | gdb_printf (fp, "strace"); |
779dcceb | 12020 | else if (type == bp_tracepoint) |
6cb06a8c | 12021 | gdb_printf (fp, "trace"); |
348d480f PA |
12022 | else |
12023 | internal_error (__FILE__, __LINE__, | |
779dcceb | 12024 | _("unhandled tracepoint type %d"), (int) type); |
cc59ec59 | 12025 | |
779dcceb | 12026 | gdb_printf (fp, " %s", event_location_to_string (location.get ())); |
04d0163c | 12027 | print_recreate_thread (fp); |
d9b3f62e | 12028 | |
779dcceb TT |
12029 | if (pass_count) |
12030 | gdb_printf (fp, " passcount %d\n", pass_count); | |
a474d7c2 PA |
12031 | } |
12032 | ||
779dcceb TT |
12033 | std::vector<symtab_and_line> |
12034 | tracepoint::decode_location (struct event_location *location, | |
12035 | struct program_space *search_pspace) | |
983af33b | 12036 | { |
8d89123d TT |
12037 | if (event_location_type (location) == PROBE_LOCATION) |
12038 | return bkpt_probe_decode_location (this, location, search_pspace); | |
12039 | ||
779dcceb | 12040 | return decode_location_default (this, location, search_pspace); |
983af33b SDJ |
12041 | } |
12042 | ||
bac7c5cf | 12043 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12044 | |
12045 | static void | |
f00aae0f | 12046 | tracepoint_probe_create_sals_from_location |
626d2320 | 12047 | (struct event_location *location, |
03ada39e | 12048 | struct linespec_result *canonical) |
55aa24fb SDJ |
12049 | { |
12050 | /* We use the same method for breakpoint on probes. */ | |
03ada39e | 12051 | bkpt_probe_create_sals_from_location (location, canonical); |
55aa24fb SDJ |
12052 | } |
12053 | ||
f293a0b5 TT |
12054 | void |
12055 | dprintf_breakpoint::re_set () | |
5c2b4418 | 12056 | { |
f293a0b5 | 12057 | breakpoint_re_set_default (this); |
5c2b4418 | 12058 | |
f00aae0f | 12059 | /* extra_string should never be non-NULL for dprintf. */ |
f293a0b5 | 12060 | gdb_assert (extra_string != NULL); |
5c2b4418 HZ |
12061 | |
12062 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12063 | 2 - create a dprintf, which resolves fine. | |
12064 | 3 - disconnect from target 1 | |
12065 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12066 | ||
12067 | After steps #3/#4, you'll want the dprintf command list to | |
12068 | be updated, because target 1 and 2 may well return different | |
12069 | answers for target_can_run_breakpoint_commands(). | |
12070 | Given absence of finer grained resetting, we get to do | |
12071 | it all the time. */ | |
f293a0b5 TT |
12072 | if (extra_string != NULL) |
12073 | update_dprintf_command_list (this); | |
5c2b4418 HZ |
12074 | } |
12075 | ||
f293a0b5 | 12076 | /* Implement the "print_recreate" method for dprintf. */ |
2d9442cc | 12077 | |
f293a0b5 | 12078 | void |
4d1ae558 | 12079 | dprintf_breakpoint::print_recreate (struct ui_file *fp) const |
2d9442cc | 12080 | { |
6cb06a8c | 12081 | gdb_printf (fp, "dprintf %s,%s", |
f293a0b5 TT |
12082 | event_location_to_string (location.get ()), |
12083 | extra_string.get ()); | |
04d0163c | 12084 | print_recreate_thread (fp); |
2d9442cc HZ |
12085 | } |
12086 | ||
f293a0b5 | 12087 | /* Implement the "after_condition_true" method for dprintf. |
9d6e6e84 HZ |
12088 | |
12089 | dprintf's are implemented with regular commands in their command | |
12090 | list, but we run the commands here instead of before presenting the | |
12091 | stop to the user, as dprintf's don't actually cause a stop. This | |
12092 | also makes it so that the commands of multiple dprintfs at the same | |
12093 | address are all handled. */ | |
12094 | ||
f293a0b5 TT |
12095 | void |
12096 | dprintf_breakpoint::after_condition_true (struct bpstat *bs) | |
9d6e6e84 | 12097 | { |
9d6e6e84 HZ |
12098 | /* dprintf's never cause a stop. This wasn't set in the |
12099 | check_status hook instead because that would make the dprintf's | |
12100 | condition not be evaluated. */ | |
12101 | bs->stop = 0; | |
12102 | ||
12103 | /* Run the command list here. Take ownership of it instead of | |
12104 | copying. We never want these commands to run later in | |
12105 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12106 | be set at same address as this dprintf, or even if running the | |
12107 | commands here throws. */ | |
9c95aea1 KB |
12108 | counted_command_line cmds = std::move (bs->commands); |
12109 | gdb_assert (cmds != nullptr); | |
12110 | execute_control_commands (cmds.get (), 0); | |
9d6e6e84 HZ |
12111 | } |
12112 | ||
983af33b SDJ |
12113 | /* The breakpoint_ops structure to be used on static tracepoints with |
12114 | markers (`-m'). */ | |
12115 | ||
12116 | static void | |
626d2320 | 12117 | strace_marker_create_sals_from_location (struct event_location *location, |
03ada39e | 12118 | struct linespec_result *canonical) |
983af33b SDJ |
12119 | { |
12120 | struct linespec_sals lsal; | |
f00aae0f | 12121 | const char *arg_start, *arg; |
983af33b | 12122 | |
a20714ff | 12123 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12124 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12125 | |
f2fc3015 TT |
12126 | std::string str (arg_start, arg - arg_start); |
12127 | const char *ptr = str.c_str (); | |
a20714ff PA |
12128 | canonical->location |
12129 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12130 | |
8e9e35b1 TT |
12131 | lsal.canonical |
12132 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12133 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12134 | } |
12135 | ||
12136 | static void | |
12137 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12138 | struct linespec_result *canonical, | |
e1e01040 PA |
12139 | gdb::unique_xmalloc_ptr<char> cond_string, |
12140 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12141 | enum bptype type_wanted, |
12142 | enum bpdisp disposition, | |
12143 | int thread, | |
12144 | int task, int ignore_count, | |
12145 | const struct breakpoint_ops *ops, | |
12146 | int from_tty, int enabled, | |
44f238bb | 12147 | int internal, unsigned flags) |
983af33b | 12148 | { |
6c5b2ebe | 12149 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12150 | |
12151 | /* If the user is creating a static tracepoint by marker id | |
12152 | (strace -m MARKER_ID), then store the sals index, so that | |
12153 | breakpoint_re_set can try to match up which of the newly | |
12154 | found markers corresponds to this one, and, don't try to | |
12155 | expand multiple locations for each sal, given than SALS | |
12156 | already should contain all sals for MARKER_ID. */ | |
12157 | ||
6c5b2ebe | 12158 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12159 | { |
6c5b2ebe PA |
12160 | event_location_up location |
12161 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12162 | |
73063f51 TT |
12163 | std::unique_ptr<tracepoint> tp (new tracepoint (gdbarch, |
12164 | type_wanted)); | |
6c5b2ebe | 12165 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 12166 | std::move (location), NULL, |
e1e01040 PA |
12167 | std::move (cond_string), |
12168 | std::move (extra_string), | |
e7e0cddf | 12169 | type_wanted, disposition, |
983af33b | 12170 | thread, task, ignore_count, ops, |
44f238bb | 12171 | from_tty, enabled, internal, flags, |
983af33b SDJ |
12172 | canonical->special_display); |
12173 | /* Given that its possible to have multiple markers with | |
12174 | the same string id, if the user is creating a static | |
12175 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12176 | store the sals index, so that breakpoint_re_set can | |
12177 | try to match up which of the newly found markers | |
12178 | corresponds to this one */ | |
12179 | tp->static_trace_marker_id_idx = i; | |
12180 | ||
b270e6f9 | 12181 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12182 | } |
12183 | } | |
12184 | ||
6d7a8c56 TT |
12185 | std::vector<symtab_and_line> |
12186 | static_marker_tracepoint::decode_location (struct event_location *location, | |
12187 | struct program_space *search_pspace) | |
983af33b | 12188 | { |
a20714ff | 12189 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 12190 | |
6c5b2ebe | 12191 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
6d7a8c56 | 12192 | if (sals.size () > static_trace_marker_id_idx) |
983af33b | 12193 | { |
6d7a8c56 | 12194 | sals[0] = sals[static_trace_marker_id_idx]; |
6c5b2ebe PA |
12195 | sals.resize (1); |
12196 | return sals; | |
983af33b SDJ |
12197 | } |
12198 | else | |
6d7a8c56 | 12199 | error (_("marker %s not found"), static_trace_marker_id.c_str ()); |
983af33b SDJ |
12200 | } |
12201 | ||
8613a476 TT |
12202 | /* Static tracepoints with marker (`-m'). */ |
12203 | static struct breakpoint_ops strace_marker_breakpoint_ops = | |
12204 | { | |
12205 | strace_marker_create_sals_from_location, | |
12206 | strace_marker_create_breakpoints_sal, | |
12207 | }; | |
983af33b SDJ |
12208 | |
12209 | static int | |
12210 | strace_marker_p (struct breakpoint *b) | |
12211 | { | |
7b572efb | 12212 | return b->type == bp_static_marker_tracepoint; |
983af33b SDJ |
12213 | } |
12214 | ||
53a5351d | 12215 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12216 | structures. */ |
c906108c SS |
12217 | |
12218 | void | |
fba45db2 | 12219 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12220 | { |
8a3fe4f8 | 12221 | gdb_assert (bpt != NULL); |
c906108c | 12222 | |
4a64f543 MS |
12223 | /* Has this bp already been deleted? This can happen because |
12224 | multiple lists can hold pointers to bp's. bpstat lists are | |
12225 | especial culprits. | |
12226 | ||
12227 | One example of this happening is a watchpoint's scope bp. When | |
12228 | the scope bp triggers, we notice that the watchpoint is out of | |
12229 | scope, and delete it. We also delete its scope bp. But the | |
12230 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
12231 | That bpstat is then checked for auto-deleting bp's, which are | |
12232 | deleted. | |
12233 | ||
12234 | A real solution to this problem might involve reference counts in | |
12235 | bp's, and/or giving them pointers back to their referencing | |
12236 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
12237 | storage when no more references were extent. A cheaper bandaid | |
12238 | was chosen. */ | |
c906108c SS |
12239 | if (bpt->type == bp_none) |
12240 | return; | |
12241 | ||
4a64f543 MS |
12242 | /* At least avoid this stale reference until the reference counting |
12243 | of breakpoints gets resolved. */ | |
d0fb5eae | 12244 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 12245 | { |
d0fb5eae | 12246 | struct breakpoint *related; |
3a5c3e22 | 12247 | struct watchpoint *w; |
d0fb5eae JK |
12248 | |
12249 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 12250 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 12251 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
12252 | w = (struct watchpoint *) bpt; |
12253 | else | |
12254 | w = NULL; | |
12255 | if (w != NULL) | |
12256 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
12257 | |
12258 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
12259 | for (related = bpt; related->related_breakpoint != bpt; | |
12260 | related = related->related_breakpoint); | |
12261 | related->related_breakpoint = bpt->related_breakpoint; | |
12262 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
12263 | } |
12264 | ||
a9634178 TJB |
12265 | /* watch_command_1 creates a watchpoint but only sets its number if |
12266 | update_watchpoint succeeds in creating its bp_locations. If there's | |
12267 | a problem in that process, we'll be asked to delete the half-created | |
12268 | watchpoint. In that case, don't announce the deletion. */ | |
12269 | if (bpt->number) | |
76727919 | 12270 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 12271 | |
c906108c SS |
12272 | if (breakpoint_chain == bpt) |
12273 | breakpoint_chain = bpt->next; | |
12274 | ||
43892fdf | 12275 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12276 | if (b->next == bpt) |
01add95b SM |
12277 | { |
12278 | b->next = bpt->next; | |
12279 | break; | |
12280 | } | |
c906108c | 12281 | |
f431efe5 PA |
12282 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
12283 | been freed. */ | |
12284 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 12285 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
12286 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
12287 | commands are associated with the bpstat; if we remove it here, | |
12288 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
12289 | event-top.c won't do anything, and temporary breakpoints with | |
12290 | commands won't work. */ | |
12291 | ||
12292 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
12293 | ||
4a64f543 MS |
12294 | /* Now that breakpoint is removed from breakpoint list, update the |
12295 | global location list. This will remove locations that used to | |
12296 | belong to this breakpoint. Do this before freeing the breakpoint | |
12297 | itself, since remove_breakpoint looks at location's owner. It | |
12298 | might be better design to have location completely | |
12299 | self-contained, but it's not the case now. */ | |
44702360 | 12300 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 12301 | |
4a64f543 MS |
12302 | /* On the chance that someone will soon try again to delete this |
12303 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 12304 | bpt->type = bp_none; |
4d01a485 | 12305 | delete bpt; |
c906108c SS |
12306 | } |
12307 | ||
51be5b68 PA |
12308 | /* Iterator function to call a user-provided callback function once |
12309 | for each of B and its related breakpoints. */ | |
12310 | ||
12311 | static void | |
12312 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 12313 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
12314 | { |
12315 | struct breakpoint *related; | |
12316 | ||
12317 | related = b; | |
12318 | do | |
12319 | { | |
12320 | struct breakpoint *next; | |
12321 | ||
12322 | /* FUNCTION may delete RELATED. */ | |
12323 | next = related->related_breakpoint; | |
12324 | ||
12325 | if (next == related) | |
12326 | { | |
12327 | /* RELATED is the last ring entry. */ | |
48649e1b | 12328 | function (related); |
51be5b68 PA |
12329 | |
12330 | /* FUNCTION may have deleted it, so we'd never reach back to | |
12331 | B. There's nothing left to do anyway, so just break | |
12332 | out. */ | |
12333 | break; | |
12334 | } | |
12335 | else | |
48649e1b | 12336 | function (related); |
51be5b68 PA |
12337 | |
12338 | related = next; | |
12339 | } | |
12340 | while (related != b); | |
12341 | } | |
95a42b64 | 12342 | |
4495129a | 12343 | static void |
981a3fb3 | 12344 | delete_command (const char *arg, int from_tty) |
c906108c | 12345 | { |
ea9365bb TT |
12346 | dont_repeat (); |
12347 | ||
c906108c SS |
12348 | if (arg == 0) |
12349 | { | |
12350 | int breaks_to_delete = 0; | |
12351 | ||
46c6471b | 12352 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
12353 | internal breakpoints, these have to be deleted with an |
12354 | explicit breakpoint number argument. */ | |
43892fdf | 12355 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 12356 | if (user_breakpoint_p (b)) |
973d738b DJ |
12357 | { |
12358 | breaks_to_delete = 1; | |
12359 | break; | |
12360 | } | |
c906108c SS |
12361 | |
12362 | /* Ask user only if there are some breakpoints to delete. */ | |
12363 | if (!from_tty | |
e2e0b3e5 | 12364 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
12365 | for (breakpoint *b : all_breakpoints_safe ()) |
12366 | if (user_breakpoint_p (b)) | |
12367 | delete_breakpoint (b); | |
c906108c SS |
12368 | } |
12369 | else | |
48649e1b | 12370 | map_breakpoint_numbers |
b926417a | 12371 | (arg, [&] (breakpoint *br) |
48649e1b | 12372 | { |
b926417a | 12373 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 12374 | }); |
c906108c SS |
12375 | } |
12376 | ||
c2f4122d PA |
12377 | /* Return true if all locations of B bound to PSPACE are pending. If |
12378 | PSPACE is NULL, all locations of all program spaces are | |
12379 | considered. */ | |
12380 | ||
0d381245 | 12381 | static int |
c2f4122d | 12382 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 12383 | { |
40cb8ca5 | 12384 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
12385 | if ((pspace == NULL |
12386 | || loc->pspace == pspace) | |
12387 | && !loc->shlib_disabled | |
8645ff69 | 12388 | && !loc->pspace->executing_startup) |
0d381245 VP |
12389 | return 0; |
12390 | return 1; | |
fe3f5fa8 VP |
12391 | } |
12392 | ||
776592bf DE |
12393 | /* Subroutine of update_breakpoint_locations to simplify it. |
12394 | Return non-zero if multiple fns in list LOC have the same name. | |
12395 | Null names are ignored. */ | |
12396 | ||
12397 | static int | |
12398 | ambiguous_names_p (struct bp_location *loc) | |
12399 | { | |
12400 | struct bp_location *l; | |
2698f5ea | 12401 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 12402 | xcalloc, xfree)); |
776592bf DE |
12403 | |
12404 | for (l = loc; l != NULL; l = l->next) | |
12405 | { | |
12406 | const char **slot; | |
23d6ee64 | 12407 | const char *name = l->function_name.get (); |
776592bf DE |
12408 | |
12409 | /* Allow for some names to be NULL, ignore them. */ | |
12410 | if (name == NULL) | |
12411 | continue; | |
12412 | ||
c1fb9836 | 12413 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 12414 | INSERT); |
4a64f543 MS |
12415 | /* NOTE: We can assume slot != NULL here because xcalloc never |
12416 | returns NULL. */ | |
776592bf | 12417 | if (*slot != NULL) |
c1fb9836 | 12418 | return 1; |
776592bf DE |
12419 | *slot = name; |
12420 | } | |
12421 | ||
776592bf DE |
12422 | return 0; |
12423 | } | |
12424 | ||
0fb4aa4b PA |
12425 | /* When symbols change, it probably means the sources changed as well, |
12426 | and it might mean the static tracepoint markers are no longer at | |
12427 | the same address or line numbers they used to be at last we | |
12428 | checked. Losing your static tracepoints whenever you rebuild is | |
12429 | undesirable. This function tries to resync/rematch gdb static | |
12430 | tracepoints with the markers on the target, for static tracepoints | |
12431 | that have not been set by marker id. Static tracepoint that have | |
12432 | been set by marker id are reset by marker id in breakpoint_re_set. | |
12433 | The heuristic is: | |
12434 | ||
12435 | 1) For a tracepoint set at a specific address, look for a marker at | |
12436 | the old PC. If one is found there, assume to be the same marker. | |
12437 | If the name / string id of the marker found is different from the | |
12438 | previous known name, assume that means the user renamed the marker | |
12439 | in the sources, and output a warning. | |
12440 | ||
12441 | 2) For a tracepoint set at a given line number, look for a marker | |
12442 | at the new address of the old line number. If one is found there, | |
12443 | assume to be the same marker. If the name / string id of the | |
12444 | marker found is different from the previous known name, assume that | |
12445 | means the user renamed the marker in the sources, and output a | |
12446 | warning. | |
12447 | ||
12448 | 3) If a marker is no longer found at the same address or line, it | |
12449 | may mean the marker no longer exists. But it may also just mean | |
12450 | the code changed a bit. Maybe the user added a few lines of code | |
12451 | that made the marker move up or down (in line number terms). Ask | |
12452 | the target for info about the marker with the string id as we knew | |
12453 | it. If found, update line number and address in the matching | |
12454 | static tracepoint. This will get confused if there's more than one | |
12455 | marker with the same ID (possible in UST, although unadvised | |
12456 | precisely because it confuses tools). */ | |
12457 | ||
12458 | static struct symtab_and_line | |
12459 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
12460 | { | |
d9b3f62e | 12461 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
12462 | struct static_tracepoint_marker marker; |
12463 | CORE_ADDR pc; | |
0fb4aa4b PA |
12464 | |
12465 | pc = sal.pc; | |
12466 | if (sal.line) | |
12467 | find_line_pc (sal.symtab, sal.line, &pc); | |
12468 | ||
12469 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
12470 | { | |
5d9310c4 | 12471 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 12472 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
12473 | b->number, tp->static_trace_marker_id.c_str (), |
12474 | marker.str_id.c_str ()); | |
0fb4aa4b | 12475 | |
5d9310c4 | 12476 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
12477 | |
12478 | return sal; | |
12479 | } | |
12480 | ||
12481 | /* Old marker wasn't found on target at lineno. Try looking it up | |
12482 | by string ID. */ | |
12483 | if (!sal.explicit_pc | |
12484 | && sal.line != 0 | |
12485 | && sal.symtab != NULL | |
5d9310c4 | 12486 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 12487 | { |
5d9310c4 SM |
12488 | std::vector<static_tracepoint_marker> markers |
12489 | = target_static_tracepoint_markers_by_strid | |
12490 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 12491 | |
5d9310c4 | 12492 | if (!markers.empty ()) |
0fb4aa4b | 12493 | { |
0fb4aa4b | 12494 | struct symbol *sym; |
80e1d417 | 12495 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 12496 | struct ui_out *uiout = current_uiout; |
67994074 | 12497 | struct explicit_location explicit_loc; |
0fb4aa4b | 12498 | |
5d9310c4 | 12499 | tpmarker = &markers[0]; |
0fb4aa4b | 12500 | |
5d9310c4 | 12501 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
12502 | |
12503 | warning (_("marker for static tracepoint %d (%s) not " | |
12504 | "found at previous line number"), | |
5d9310c4 | 12505 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 12506 | |
51abb421 | 12507 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 12508 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 12509 | uiout->text ("Now in "); |
0fb4aa4b PA |
12510 | if (sym) |
12511 | { | |
987012b8 | 12512 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 12513 | function_name_style.style ()); |
112e8700 | 12514 | uiout->text (" at "); |
0fb4aa4b | 12515 | } |
112e8700 | 12516 | uiout->field_string ("file", |
cbe56571 | 12517 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 12518 | file_name_style.style ()); |
112e8700 | 12519 | uiout->text (":"); |
0fb4aa4b | 12520 | |
112e8700 | 12521 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 12522 | { |
0b0865da | 12523 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 12524 | |
112e8700 | 12525 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
12526 | } |
12527 | ||
381befee | 12528 | uiout->field_signed ("line", sal2.line); |
112e8700 | 12529 | uiout->text ("\n"); |
0fb4aa4b | 12530 | |
80e1d417 | 12531 | b->loc->line_number = sal2.line; |
2f202fde | 12532 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 12533 | |
d28cd78a | 12534 | b->location.reset (NULL); |
67994074 KS |
12535 | initialize_explicit_location (&explicit_loc); |
12536 | explicit_loc.source_filename | |
00e52e53 | 12537 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
12538 | explicit_loc.line_offset.offset = b->loc->line_number; |
12539 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 12540 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
12541 | |
12542 | /* Might be nice to check if function changed, and warn if | |
12543 | so. */ | |
0fb4aa4b PA |
12544 | } |
12545 | } | |
12546 | return sal; | |
12547 | } | |
12548 | ||
8d3788bd VP |
12549 | /* Returns 1 iff locations A and B are sufficiently same that |
12550 | we don't need to report breakpoint as changed. */ | |
12551 | ||
12552 | static int | |
12553 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
12554 | { | |
12555 | while (a && b) | |
12556 | { | |
12557 | if (a->address != b->address) | |
12558 | return 0; | |
12559 | ||
12560 | if (a->shlib_disabled != b->shlib_disabled) | |
12561 | return 0; | |
12562 | ||
12563 | if (a->enabled != b->enabled) | |
12564 | return 0; | |
12565 | ||
b5fa468f TBA |
12566 | if (a->disabled_by_cond != b->disabled_by_cond) |
12567 | return 0; | |
12568 | ||
8d3788bd VP |
12569 | a = a->next; |
12570 | b = b->next; | |
12571 | } | |
12572 | ||
12573 | if ((a == NULL) != (b == NULL)) | |
12574 | return 0; | |
12575 | ||
12576 | return 1; | |
12577 | } | |
12578 | ||
c2f4122d PA |
12579 | /* Split all locations of B that are bound to PSPACE out of B's |
12580 | location list to a separate list and return that list's head. If | |
12581 | PSPACE is NULL, hoist out all locations of B. */ | |
12582 | ||
12583 | static struct bp_location * | |
12584 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
12585 | { | |
12586 | struct bp_location head; | |
12587 | struct bp_location *i = b->loc; | |
12588 | struct bp_location **i_link = &b->loc; | |
12589 | struct bp_location *hoisted = &head; | |
12590 | ||
12591 | if (pspace == NULL) | |
12592 | { | |
12593 | i = b->loc; | |
12594 | b->loc = NULL; | |
12595 | return i; | |
12596 | } | |
12597 | ||
12598 | head.next = NULL; | |
12599 | ||
12600 | while (i != NULL) | |
12601 | { | |
12602 | if (i->pspace == pspace) | |
12603 | { | |
12604 | *i_link = i->next; | |
12605 | i->next = NULL; | |
12606 | hoisted->next = i; | |
12607 | hoisted = i; | |
12608 | } | |
12609 | else | |
12610 | i_link = &i->next; | |
12611 | i = *i_link; | |
12612 | } | |
12613 | ||
12614 | return head.next; | |
12615 | } | |
12616 | ||
12617 | /* Create new breakpoint locations for B (a hardware or software | |
12618 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
12619 | zero, then B is a ranged breakpoint. Only recreates locations for | |
12620 | FILTER_PSPACE. Locations of other program spaces are left | |
12621 | untouched. */ | |
f1310107 | 12622 | |
0e30163f | 12623 | void |
0d381245 | 12624 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 12625 | struct program_space *filter_pspace, |
6c5b2ebe PA |
12626 | gdb::array_view<const symtab_and_line> sals, |
12627 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 12628 | { |
c2f4122d | 12629 | struct bp_location *existing_locations; |
0d381245 | 12630 | |
6c5b2ebe | 12631 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
12632 | { |
12633 | /* Ranged breakpoints have only one start location and one end | |
12634 | location. */ | |
12635 | b->enable_state = bp_disabled; | |
6cb06a8c TT |
12636 | gdb_printf (gdb_stderr, |
12637 | _("Could not reset ranged breakpoint %d: " | |
12638 | "multiple locations found\n"), | |
12639 | b->number); | |
f8eba3c6 TT |
12640 | return; |
12641 | } | |
f1310107 | 12642 | |
4a64f543 MS |
12643 | /* If there's no new locations, and all existing locations are |
12644 | pending, don't do anything. This optimizes the common case where | |
12645 | all locations are in the same shared library, that was unloaded. | |
12646 | We'd like to retain the location, so that when the library is | |
12647 | loaded again, we don't loose the enabled/disabled status of the | |
12648 | individual locations. */ | |
6c5b2ebe | 12649 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
12650 | return; |
12651 | ||
c2f4122d | 12652 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 12653 | |
6c5b2ebe | 12654 | for (const auto &sal : sals) |
fe3f5fa8 | 12655 | { |
f8eba3c6 TT |
12656 | struct bp_location *new_loc; |
12657 | ||
6c5b2ebe | 12658 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 12659 | |
06615628 | 12660 | new_loc = b->add_location (sal); |
fe3f5fa8 | 12661 | |
0d381245 VP |
12662 | /* Reparse conditions, they might contain references to the |
12663 | old symtab. */ | |
12664 | if (b->cond_string != NULL) | |
12665 | { | |
bbc13ae3 | 12666 | const char *s; |
fe3f5fa8 | 12667 | |
6f781ee3 | 12668 | s = b->cond_string.get (); |
a70b8144 | 12669 | try |
0d381245 | 12670 | { |
6c5b2ebe PA |
12671 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
12672 | block_for_pc (sal.pc), | |
0d381245 VP |
12673 | 0); |
12674 | } | |
230d2906 | 12675 | catch (const gdb_exception_error &e) |
0d381245 | 12676 | { |
b5fa468f | 12677 | new_loc->disabled_by_cond = true; |
0d381245 VP |
12678 | } |
12679 | } | |
fe3f5fa8 | 12680 | |
6c5b2ebe | 12681 | if (!sals_end.empty ()) |
f1310107 | 12682 | { |
6c5b2ebe | 12683 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 12684 | |
6c5b2ebe | 12685 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 12686 | } |
0d381245 | 12687 | } |
fe3f5fa8 | 12688 | |
4a64f543 MS |
12689 | /* If possible, carry over 'disable' status from existing |
12690 | breakpoints. */ | |
0d381245 VP |
12691 | { |
12692 | struct bp_location *e = existing_locations; | |
776592bf DE |
12693 | /* If there are multiple breakpoints with the same function name, |
12694 | e.g. for inline functions, comparing function names won't work. | |
12695 | Instead compare pc addresses; this is just a heuristic as things | |
12696 | may have moved, but in practice it gives the correct answer | |
12697 | often enough until a better solution is found. */ | |
12698 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
12699 | ||
0d381245 VP |
12700 | for (; e; e = e->next) |
12701 | { | |
b5fa468f | 12702 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 12703 | { |
776592bf DE |
12704 | if (have_ambiguous_names) |
12705 | { | |
40cb8ca5 | 12706 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
12707 | { |
12708 | /* Ignore software vs hardware location type at | |
12709 | this point, because with "set breakpoint | |
12710 | auto-hw", after a re-set, locations that were | |
12711 | hardware can end up as software, or vice versa. | |
12712 | As mentioned above, this is an heuristic and in | |
12713 | practice should give the correct answer often | |
12714 | enough. */ | |
12715 | if (breakpoint_locations_match (e, l, true)) | |
12716 | { | |
b5fa468f TBA |
12717 | l->enabled = e->enabled; |
12718 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
12719 | break; |
12720 | } | |
12721 | } | |
776592bf DE |
12722 | } |
12723 | else | |
12724 | { | |
40cb8ca5 | 12725 | for (bp_location *l : b->locations ()) |
776592bf | 12726 | if (l->function_name |
23d6ee64 TT |
12727 | && strcmp (e->function_name.get (), |
12728 | l->function_name.get ()) == 0) | |
776592bf | 12729 | { |
b5fa468f TBA |
12730 | l->enabled = e->enabled; |
12731 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
12732 | break; |
12733 | } | |
12734 | } | |
0d381245 VP |
12735 | } |
12736 | } | |
12737 | } | |
fe3f5fa8 | 12738 | |
8d3788bd | 12739 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 12740 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
12741 | } |
12742 | ||
f00aae0f | 12743 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
12744 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
12745 | ||
6c5b2ebe | 12746 | static std::vector<symtab_and_line> |
f00aae0f | 12747 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 12748 | struct program_space *search_pspace, int *found) |
ef23e705 | 12749 | { |
cc06b668 | 12750 | struct gdb_exception exception; |
ef23e705 | 12751 | |
6c5b2ebe PA |
12752 | std::vector<symtab_and_line> sals; |
12753 | ||
a70b8144 | 12754 | try |
ef23e705 | 12755 | { |
c47614fe | 12756 | sals = b->decode_location (location, search_pspace); |
ef23e705 | 12757 | } |
94aeb44b | 12758 | catch (gdb_exception_error &e) |
ef23e705 TJB |
12759 | { |
12760 | int not_found_and_ok = 0; | |
492d29ea | 12761 | |
ef23e705 TJB |
12762 | /* For pending breakpoints, it's expected that parsing will |
12763 | fail until the right shared library is loaded. User has | |
12764 | already told to create pending breakpoints and don't need | |
12765 | extra messages. If breakpoint is in bp_shlib_disabled | |
12766 | state, then user already saw the message about that | |
12767 | breakpoint being disabled, and don't want to see more | |
12768 | errors. */ | |
58438ac1 | 12769 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
12770 | && (b->condition_not_parsed |
12771 | || (b->loc != NULL | |
12772 | && search_pspace != NULL | |
12773 | && b->loc->pspace != search_pspace) | |
ef23e705 | 12774 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 12775 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
12776 | || b->enable_state == bp_disabled)) |
12777 | not_found_and_ok = 1; | |
12778 | ||
12779 | if (!not_found_and_ok) | |
12780 | { | |
12781 | /* We surely don't want to warn about the same breakpoint | |
12782 | 10 times. One solution, implemented here, is disable | |
12783 | the breakpoint on error. Another solution would be to | |
12784 | have separate 'warning emitted' flag. Since this | |
12785 | happens only when a binary has changed, I don't know | |
12786 | which approach is better. */ | |
12787 | b->enable_state = bp_disabled; | |
eedc3f4f | 12788 | throw; |
ef23e705 | 12789 | } |
94aeb44b TT |
12790 | |
12791 | exception = std::move (e); | |
ef23e705 TJB |
12792 | } |
12793 | ||
492d29ea | 12794 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 12795 | { |
6c5b2ebe PA |
12796 | for (auto &sal : sals) |
12797 | resolve_sal_pc (&sal); | |
f00aae0f | 12798 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 12799 | { |
6f781ee3 | 12800 | gdb::unique_xmalloc_ptr<char> cond_string, extra_string; |
ed1d1739 | 12801 | int thread, task; |
ef23e705 | 12802 | |
6f781ee3 | 12803 | find_condition_and_thread_for_sals (sals, b->extra_string.get (), |
b5fa468f TBA |
12804 | &cond_string, &thread, |
12805 | &task, &extra_string); | |
f00aae0f | 12806 | gdb_assert (b->cond_string == NULL); |
ef23e705 | 12807 | if (cond_string) |
6f781ee3 | 12808 | b->cond_string = std::move (cond_string); |
ef23e705 TJB |
12809 | b->thread = thread; |
12810 | b->task = task; | |
e7e0cddf | 12811 | if (extra_string) |
6f781ee3 | 12812 | b->extra_string = std::move (extra_string); |
ef23e705 TJB |
12813 | b->condition_not_parsed = 0; |
12814 | } | |
12815 | ||
7b572efb | 12816 | if (b->type == bp_static_tracepoint) |
6c5b2ebe | 12817 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 12818 | |
58438ac1 TT |
12819 | *found = 1; |
12820 | } | |
12821 | else | |
12822 | *found = 0; | |
ef23e705 TJB |
12823 | |
12824 | return sals; | |
12825 | } | |
12826 | ||
348d480f PA |
12827 | /* The default re_set method, for typical hardware or software |
12828 | breakpoints. Reevaluate the breakpoint and recreate its | |
12829 | locations. */ | |
12830 | ||
12831 | static void | |
28010a5d | 12832 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 12833 | { |
c2f4122d | 12834 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 12835 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 12836 | |
6c5b2ebe PA |
12837 | int found; |
12838 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
12839 | filter_pspace, &found); | |
ef23e705 | 12840 | if (found) |
6c5b2ebe | 12841 | expanded = std::move (sals); |
ef23e705 | 12842 | |
f00aae0f | 12843 | if (b->location_range_end != NULL) |
f1310107 | 12844 | { |
6c5b2ebe PA |
12845 | std::vector<symtab_and_line> sals_end |
12846 | = location_to_sals (b, b->location_range_end.get (), | |
12847 | filter_pspace, &found); | |
f1310107 | 12848 | if (found) |
6c5b2ebe | 12849 | expanded_end = std::move (sals_end); |
f1310107 TJB |
12850 | } |
12851 | ||
c2f4122d | 12852 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
12853 | } |
12854 | ||
983af33b SDJ |
12855 | /* Default method for creating SALs from an address string. It basically |
12856 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
12857 | ||
12858 | static void | |
626d2320 | 12859 | create_sals_from_location_default (struct event_location *location, |
03ada39e | 12860 | struct linespec_result *canonical) |
983af33b | 12861 | { |
f00aae0f | 12862 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
12863 | } |
12864 | ||
983af33b | 12865 | /* Decode the line represented by S by calling decode_line_full. This is the |
5f700d83 | 12866 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 12867 | |
6c5b2ebe | 12868 | static std::vector<symtab_and_line> |
f00aae0f | 12869 | decode_location_default (struct breakpoint *b, |
626d2320 | 12870 | struct event_location *location, |
6c5b2ebe | 12871 | struct program_space *search_pspace) |
983af33b SDJ |
12872 | { |
12873 | struct linespec_result canonical; | |
12874 | ||
c2f4122d | 12875 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 12876 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 12877 | b->filter.get ()); |
983af33b SDJ |
12878 | |
12879 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 12880 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 12881 | |
6c5b2ebe | 12882 | if (!canonical.lsals.empty ()) |
983af33b | 12883 | { |
6c5b2ebe PA |
12884 | const linespec_sals &lsal = canonical.lsals[0]; |
12885 | return std::move (lsal.sals); | |
983af33b | 12886 | } |
6c5b2ebe | 12887 | return {}; |
983af33b SDJ |
12888 | } |
12889 | ||
bf469271 | 12890 | /* Reset a breakpoint. */ |
c906108c | 12891 | |
bf469271 PA |
12892 | static void |
12893 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 12894 | { |
fdf44873 TT |
12895 | input_radix = b->input_radix; |
12896 | set_language (b->language); | |
c906108c | 12897 | |
c47614fe | 12898 | b->re_set (); |
c906108c SS |
12899 | } |
12900 | ||
c2f4122d PA |
12901 | /* Re-set breakpoint locations for the current program space. |
12902 | Locations bound to other program spaces are left untouched. */ | |
12903 | ||
c906108c | 12904 | void |
69de3c6a | 12905 | breakpoint_re_set (void) |
c906108c | 12906 | { |
c5aa993b | 12907 | { |
fdf44873 TT |
12908 | scoped_restore_current_language save_language; |
12909 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 12910 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 12911 | |
8e817061 JB |
12912 | /* breakpoint_re_set_one sets the current_language to the language |
12913 | of the breakpoint it is resetting (see prepare_re_set_context) | |
12914 | before re-evaluating the breakpoint's location. This change can | |
12915 | unfortunately get undone by accident if the language_mode is set | |
12916 | to auto, and we either switch frames, or more likely in this context, | |
12917 | we select the current frame. | |
12918 | ||
12919 | We prevent this by temporarily turning the language_mode to | |
12920 | language_mode_manual. We restore it once all breakpoints | |
12921 | have been reset. */ | |
12922 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
12923 | language_mode = language_mode_manual; | |
12924 | ||
5ed8105e PA |
12925 | /* Note: we must not try to insert locations until after all |
12926 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
12927 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
12928 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 12929 | |
1428b37a | 12930 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 12931 | { |
a70b8144 | 12932 | try |
bf469271 PA |
12933 | { |
12934 | breakpoint_re_set_one (b); | |
12935 | } | |
230d2906 | 12936 | catch (const gdb_exception &ex) |
bf469271 PA |
12937 | { |
12938 | exception_fprintf (gdb_stderr, ex, | |
12939 | "Error in re-setting breakpoint %d: ", | |
12940 | b->number); | |
12941 | } | |
5ed8105e | 12942 | } |
5ed8105e PA |
12943 | |
12944 | jit_breakpoint_re_set (); | |
12945 | } | |
6c95b8df | 12946 | |
af02033e PP |
12947 | create_overlay_event_breakpoint (); |
12948 | create_longjmp_master_breakpoint (); | |
12949 | create_std_terminate_master_breakpoint (); | |
186c406b | 12950 | create_exception_master_breakpoint (); |
2a7f3dff PA |
12951 | |
12952 | /* Now we can insert. */ | |
12953 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
12954 | } |
12955 | \f | |
c906108c SS |
12956 | /* Reset the thread number of this breakpoint: |
12957 | ||
12958 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 12959 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 12960 | void |
fba45db2 | 12961 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
12962 | { |
12963 | if (b->thread != -1) | |
12964 | { | |
00431a78 | 12965 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
12966 | |
12967 | /* We're being called after following a fork. The new fork is | |
12968 | selected as current, and unless this was a vfork will have a | |
12969 | different program space from the original thread. Reset that | |
12970 | as well. */ | |
12971 | b->loc->pspace = current_program_space; | |
c906108c SS |
12972 | } |
12973 | } | |
12974 | ||
03ac34d5 MS |
12975 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12976 | If from_tty is nonzero, it prints a message to that effect, | |
12977 | which ends with a period (no newline). */ | |
12978 | ||
c906108c | 12979 | void |
fba45db2 | 12980 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 12981 | { |
c906108c SS |
12982 | if (count < 0) |
12983 | count = 0; | |
12984 | ||
43892fdf | 12985 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12986 | if (b->number == bptnum) |
01add95b SM |
12987 | { |
12988 | if (is_tracepoint (b)) | |
12989 | { | |
12990 | if (from_tty && count != 0) | |
6cb06a8c TT |
12991 | gdb_printf (_("Ignore count ignored for tracepoint %d."), |
12992 | bptnum); | |
01add95b SM |
12993 | return; |
12994 | } | |
12995 | ||
12996 | b->ignore_count = count; | |
12997 | if (from_tty) | |
12998 | { | |
12999 | if (count == 0) | |
6cb06a8c TT |
13000 | gdb_printf (_("Will stop next time " |
13001 | "breakpoint %d is reached."), | |
13002 | bptnum); | |
01add95b | 13003 | else if (count == 1) |
6cb06a8c TT |
13004 | gdb_printf (_("Will ignore next crossing of breakpoint %d."), |
13005 | bptnum); | |
01add95b | 13006 | else |
6cb06a8c TT |
13007 | gdb_printf (_("Will ignore next %d " |
13008 | "crossings of breakpoint %d."), | |
13009 | count, bptnum); | |
01add95b SM |
13010 | } |
13011 | gdb::observers::breakpoint_modified.notify (b); | |
13012 | return; | |
13013 | } | |
c906108c | 13014 | |
8a3fe4f8 | 13015 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13016 | } |
13017 | ||
c906108c SS |
13018 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13019 | ||
13020 | static void | |
0b39b52e | 13021 | ignore_command (const char *args, int from_tty) |
c906108c | 13022 | { |
0b39b52e | 13023 | const char *p = args; |
52f0bd74 | 13024 | int num; |
c906108c SS |
13025 | |
13026 | if (p == 0) | |
e2e0b3e5 | 13027 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13028 | |
c906108c | 13029 | num = get_number (&p); |
5c44784c | 13030 | if (num == 0) |
8a3fe4f8 | 13031 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13032 | if (*p == 0) |
8a3fe4f8 | 13033 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13034 | |
13035 | set_ignore_count (num, | |
13036 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13037 | from_tty); | |
221ea385 | 13038 | if (from_tty) |
6cb06a8c | 13039 | gdb_printf ("\n"); |
c906108c SS |
13040 | } |
13041 | \f | |
d0fe4701 XR |
13042 | |
13043 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13044 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13045 | |
13046 | static void | |
d0fe4701 XR |
13047 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13048 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13049 | { |
d0fe4701 XR |
13050 | if (bp_num_range.first == 0) |
13051 | { | |
13052 | warning (_("bad breakpoint number at or near '%d'"), | |
13053 | bp_num_range.first); | |
13054 | } | |
13055 | else | |
c906108c | 13056 | { |
d0fe4701 | 13057 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13058 | { |
d0fe4701 XR |
13059 | bool match = false; |
13060 | ||
1428b37a | 13061 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 13062 | if (b->number == i) |
5c44784c | 13063 | { |
bfd28288 | 13064 | match = true; |
48649e1b | 13065 | function (b); |
11cf8741 | 13066 | break; |
5c44784c | 13067 | } |
bfd28288 | 13068 | if (!match) |
6cb06a8c | 13069 | gdb_printf (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13070 | } |
c906108c SS |
13071 | } |
13072 | } | |
13073 | ||
d0fe4701 XR |
13074 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13075 | ARGS. */ | |
13076 | ||
13077 | static void | |
13078 | map_breakpoint_numbers (const char *args, | |
13079 | gdb::function_view<void (breakpoint *)> function) | |
13080 | { | |
13081 | if (args == NULL || *args == '\0') | |
13082 | error_no_arg (_("one or more breakpoint numbers")); | |
13083 | ||
13084 | number_or_range_parser parser (args); | |
13085 | ||
13086 | while (!parser.finished ()) | |
13087 | { | |
13088 | int num = parser.get_number (); | |
13089 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13090 | } | |
13091 | } | |
13092 | ||
13093 | /* Return the breakpoint location structure corresponding to the | |
13094 | BP_NUM and LOC_NUM values. */ | |
13095 | ||
0d381245 | 13096 | static struct bp_location * |
d0fe4701 | 13097 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13098 | { |
43892fdf | 13099 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
13100 | |
13101 | if (!b || b->number != bp_num) | |
d0fe4701 | 13102 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13103 | |
0d381245 | 13104 | if (loc_num == 0) |
d0fe4701 | 13105 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13106 | |
d0fe4701 | 13107 | int n = 0; |
40cb8ca5 | 13108 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
13109 | if (++n == loc_num) |
13110 | return loc; | |
13111 | ||
13112 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13113 | } |
13114 | ||
95e95a6d PA |
13115 | /* Modes of operation for extract_bp_num. */ |
13116 | enum class extract_bp_kind | |
13117 | { | |
13118 | /* Extracting a breakpoint number. */ | |
13119 | bp, | |
13120 | ||
13121 | /* Extracting a location number. */ | |
13122 | loc, | |
13123 | }; | |
13124 | ||
13125 | /* Extract a breakpoint or location number (as determined by KIND) | |
13126 | from the string starting at START. TRAILER is a character which | |
13127 | can be found after the number. If you don't want a trailer, use | |
13128 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13129 | string. This always returns a positive integer. */ | |
13130 | ||
13131 | static int | |
13132 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13133 | int trailer, const char **end_out = NULL) | |
13134 | { | |
13135 | const char *end = start; | |
13136 | int num = get_number_trailer (&end, trailer); | |
13137 | if (num < 0) | |
13138 | error (kind == extract_bp_kind::bp | |
13139 | ? _("Negative breakpoint number '%.*s'") | |
13140 | : _("Negative breakpoint location number '%.*s'"), | |
13141 | int (end - start), start); | |
13142 | if (num == 0) | |
13143 | error (kind == extract_bp_kind::bp | |
13144 | ? _("Bad breakpoint number '%.*s'") | |
13145 | : _("Bad breakpoint location number '%.*s'"), | |
13146 | int (end - start), start); | |
13147 | ||
13148 | if (end_out != NULL) | |
13149 | *end_out = end; | |
13150 | return num; | |
13151 | } | |
13152 | ||
13153 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13154 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13155 | representing the (inclusive) range. The returned pair's elements | |
13156 | are always positive integers. */ | |
13157 | ||
13158 | static std::pair<int, int> | |
13159 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13160 | const std::string &arg, | |
13161 | std::string::size_type arg_offset) | |
13162 | { | |
13163 | std::pair<int, int> range; | |
13164 | const char *bp_loc = &arg[arg_offset]; | |
13165 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13166 | if (dash != std::string::npos) | |
13167 | { | |
13168 | /* bp_loc is a range (x-z). */ | |
13169 | if (arg.length () == dash + 1) | |
13170 | error (kind == extract_bp_kind::bp | |
13171 | ? _("Bad breakpoint number at or near: '%s'") | |
13172 | : _("Bad breakpoint location number at or near: '%s'"), | |
13173 | bp_loc); | |
13174 | ||
13175 | const char *end; | |
13176 | const char *start_first = bp_loc; | |
13177 | const char *start_second = &arg[dash + 1]; | |
13178 | range.first = extract_bp_num (kind, start_first, '-'); | |
13179 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
13180 | ||
13181 | if (range.first > range.second) | |
13182 | error (kind == extract_bp_kind::bp | |
13183 | ? _("Inverted breakpoint range at '%.*s'") | |
13184 | : _("Inverted breakpoint location range at '%.*s'"), | |
13185 | int (end - start_first), start_first); | |
13186 | } | |
13187 | else | |
13188 | { | |
13189 | /* bp_loc is a single value. */ | |
13190 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
13191 | range.second = range.first; | |
13192 | } | |
13193 | return range; | |
13194 | } | |
13195 | ||
d0fe4701 XR |
13196 | /* Extract the breakpoint/location range specified by ARG. Returns |
13197 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
13198 | BP_LOC_RANGE. | |
13199 | ||
13200 | ARG may be in any of the following forms: | |
13201 | ||
13202 | x where 'x' is a breakpoint number. | |
13203 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
13204 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
13205 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
13206 | location number range. | |
13207 | */ | |
13208 | ||
cc638e86 | 13209 | static void |
d0fe4701 XR |
13210 | extract_bp_number_and_location (const std::string &arg, |
13211 | std::pair<int, int> &bp_num_range, | |
13212 | std::pair<int, int> &bp_loc_range) | |
13213 | { | |
13214 | std::string::size_type dot = arg.find ('.'); | |
13215 | ||
13216 | if (dot != std::string::npos) | |
13217 | { | |
13218 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
13219 | ||
13220 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 13221 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 13222 | |
95e95a6d PA |
13223 | bp_num_range.first |
13224 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
13225 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 13226 | |
95e95a6d PA |
13227 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
13228 | arg, dot + 1); | |
d0fe4701 XR |
13229 | } |
13230 | else | |
13231 | { | |
13232 | /* Handle x and x-y cases. */ | |
d0fe4701 | 13233 | |
95e95a6d | 13234 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
13235 | bp_loc_range.first = 0; |
13236 | bp_loc_range.second = 0; | |
13237 | } | |
d0fe4701 XR |
13238 | } |
13239 | ||
13240 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
13241 | specifies whether to enable or disable. */ | |
13242 | ||
13243 | static void | |
13244 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
13245 | { | |
13246 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
13247 | if (loc != NULL) | |
13248 | { | |
b5fa468f TBA |
13249 | if (loc->disabled_by_cond && enable) |
13250 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13251 | "cannot enable."), bp_num, loc_num); | |
13252 | ||
d0fe4701 XR |
13253 | if (loc->enabled != enable) |
13254 | { | |
13255 | loc->enabled = enable; | |
13256 | mark_breakpoint_location_modified (loc); | |
13257 | } | |
13258 | if (target_supports_enable_disable_tracepoint () | |
13259 | && current_trace_status ()->running && loc->owner | |
13260 | && is_tracepoint (loc->owner)) | |
13261 | target_disable_tracepoint (loc); | |
13262 | } | |
13263 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
13264 | |
13265 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
13266 | } |
13267 | ||
13268 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
13269 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
13270 | (inclusive) range of location numbers of that breakpoint to | |
13271 | enable/disable. ENABLE specifies whether to enable or disable the | |
13272 | location. */ | |
13273 | ||
13274 | static void | |
13275 | enable_disable_breakpoint_location_range (int bp_num, | |
13276 | std::pair<int, int> &bp_loc_range, | |
13277 | bool enable) | |
13278 | { | |
13279 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
13280 | enable_disable_bp_num_loc (bp_num, i, enable); | |
13281 | } | |
0d381245 | 13282 | |
1900040c MS |
13283 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13284 | If from_tty is nonzero, it prints a message to that effect, | |
13285 | which ends with a period (no newline). */ | |
13286 | ||
c906108c | 13287 | void |
fba45db2 | 13288 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
13289 | { |
13290 | /* Never disable a watchpoint scope breakpoint; we want to | |
13291 | hit them when we leave scope so we can delete both the | |
13292 | watchpoint and its scope breakpoint at that time. */ | |
13293 | if (bpt->type == bp_watchpoint_scope) | |
13294 | return; | |
13295 | ||
b5de0fa7 | 13296 | bpt->enable_state = bp_disabled; |
c906108c | 13297 | |
b775012e LM |
13298 | /* Mark breakpoint locations modified. */ |
13299 | mark_breakpoint_modified (bpt); | |
13300 | ||
d248b706 KY |
13301 | if (target_supports_enable_disable_tracepoint () |
13302 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13303 | { | |
40cb8ca5 | 13304 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13305 | target_disable_tracepoint (location); |
13306 | } | |
13307 | ||
44702360 | 13308 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 13309 | |
76727919 | 13310 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13311 | } |
13312 | ||
d0fe4701 XR |
13313 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
13314 | specified in ARGS. ARGS may be in any of the formats handled by | |
13315 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
13316 | or disable the breakpoints/locations. */ | |
13317 | ||
c906108c | 13318 | static void |
d0fe4701 | 13319 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 13320 | { |
c906108c | 13321 | if (args == 0) |
46c6471b | 13322 | { |
43892fdf | 13323 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 13324 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
13325 | { |
13326 | if (enable) | |
13327 | enable_breakpoint (bpt); | |
13328 | else | |
13329 | disable_breakpoint (bpt); | |
13330 | } | |
46c6471b | 13331 | } |
9eaabc75 | 13332 | else |
0d381245 | 13333 | { |
cb791d59 | 13334 | std::string num = extract_arg (&args); |
9eaabc75 | 13335 | |
cb791d59 | 13336 | while (!num.empty ()) |
d248b706 | 13337 | { |
d0fe4701 | 13338 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 13339 | |
cc638e86 PA |
13340 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
13341 | ||
13342 | if (bp_loc_range.first == bp_loc_range.second | |
13343 | && bp_loc_range.first == 0) | |
d0fe4701 | 13344 | { |
cc638e86 PA |
13345 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
13346 | map_breakpoint_number_range (bp_num_range, | |
13347 | enable | |
13348 | ? enable_breakpoint | |
13349 | : disable_breakpoint); | |
13350 | } | |
13351 | else | |
13352 | { | |
13353 | /* Handle breakpoint ids with formats 'x.y' or | |
13354 | 'x.y-z'. */ | |
13355 | enable_disable_breakpoint_location_range | |
13356 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 13357 | } |
9eaabc75 | 13358 | num = extract_arg (&args); |
d248b706 | 13359 | } |
0d381245 | 13360 | } |
c906108c SS |
13361 | } |
13362 | ||
d0fe4701 XR |
13363 | /* The disable command disables the specified breakpoints/locations |
13364 | (or all defined breakpoints) so they're no longer effective in | |
13365 | stopping the inferior. ARGS may be in any of the forms defined in | |
13366 | extract_bp_number_and_location. */ | |
13367 | ||
13368 | static void | |
13369 | disable_command (const char *args, int from_tty) | |
13370 | { | |
13371 | enable_disable_command (args, from_tty, false); | |
13372 | } | |
13373 | ||
c906108c | 13374 | static void |
816338b5 SS |
13375 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
13376 | int count) | |
c906108c | 13377 | { |
afe38095 | 13378 | int target_resources_ok; |
c906108c SS |
13379 | |
13380 | if (bpt->type == bp_hardware_breakpoint) | |
13381 | { | |
13382 | int i; | |
c5aa993b | 13383 | i = hw_breakpoint_used_count (); |
53a5351d | 13384 | target_resources_ok = |
d92524f1 | 13385 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 13386 | i + 1, 0); |
c906108c | 13387 | if (target_resources_ok == 0) |
8a3fe4f8 | 13388 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 13389 | else if (target_resources_ok < 0) |
8a3fe4f8 | 13390 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
13391 | } |
13392 | ||
cc60f2e3 | 13393 | if (is_watchpoint (bpt)) |
c906108c | 13394 | { |
d07205c2 | 13395 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 13396 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 13397 | |
a70b8144 | 13398 | try |
c906108c | 13399 | { |
3a5c3e22 PA |
13400 | struct watchpoint *w = (struct watchpoint *) bpt; |
13401 | ||
1e718ff1 TJB |
13402 | orig_enable_state = bpt->enable_state; |
13403 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 13404 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 13405 | } |
230d2906 | 13406 | catch (const gdb_exception &e) |
c5aa993b | 13407 | { |
1e718ff1 | 13408 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
13409 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
13410 | bpt->number); | |
13411 | return; | |
c5aa993b | 13412 | } |
c906108c | 13413 | } |
0101ce28 | 13414 | |
b775012e LM |
13415 | bpt->enable_state = bp_enabled; |
13416 | ||
13417 | /* Mark breakpoint locations modified. */ | |
13418 | mark_breakpoint_modified (bpt); | |
13419 | ||
d248b706 KY |
13420 | if (target_supports_enable_disable_tracepoint () |
13421 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13422 | { | |
40cb8ca5 | 13423 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13424 | target_enable_tracepoint (location); |
13425 | } | |
13426 | ||
b4c291bb | 13427 | bpt->disposition = disposition; |
816338b5 | 13428 | bpt->enable_count = count; |
44702360 | 13429 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 13430 | |
76727919 | 13431 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13432 | } |
13433 | ||
fe3f5fa8 | 13434 | |
c906108c | 13435 | void |
fba45db2 | 13436 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 13437 | { |
816338b5 | 13438 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
13439 | } |
13440 | ||
d0fe4701 XR |
13441 | /* The enable command enables the specified breakpoints/locations (or |
13442 | all defined breakpoints) so they once again become (or continue to | |
13443 | be) effective in stopping the inferior. ARGS may be in any of the | |
13444 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 13445 | |
c906108c | 13446 | static void |
981a3fb3 | 13447 | enable_command (const char *args, int from_tty) |
c906108c | 13448 | { |
d0fe4701 | 13449 | enable_disable_command (args, from_tty, true); |
c906108c SS |
13450 | } |
13451 | ||
c906108c | 13452 | static void |
4495129a | 13453 | enable_once_command (const char *args, int from_tty) |
c906108c | 13454 | { |
48649e1b TT |
13455 | map_breakpoint_numbers |
13456 | (args, [&] (breakpoint *b) | |
13457 | { | |
13458 | iterate_over_related_breakpoints | |
13459 | (b, [&] (breakpoint *bpt) | |
13460 | { | |
13461 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
13462 | }); | |
13463 | }); | |
816338b5 SS |
13464 | } |
13465 | ||
13466 | static void | |
4495129a | 13467 | enable_count_command (const char *args, int from_tty) |
816338b5 | 13468 | { |
b9d61307 SM |
13469 | int count; |
13470 | ||
13471 | if (args == NULL) | |
13472 | error_no_arg (_("hit count")); | |
13473 | ||
13474 | count = get_number (&args); | |
816338b5 | 13475 | |
48649e1b TT |
13476 | map_breakpoint_numbers |
13477 | (args, [&] (breakpoint *b) | |
13478 | { | |
13479 | iterate_over_related_breakpoints | |
13480 | (b, [&] (breakpoint *bpt) | |
13481 | { | |
13482 | enable_breakpoint_disp (bpt, disp_disable, count); | |
13483 | }); | |
13484 | }); | |
c906108c SS |
13485 | } |
13486 | ||
c906108c | 13487 | static void |
4495129a | 13488 | enable_delete_command (const char *args, int from_tty) |
c906108c | 13489 | { |
48649e1b TT |
13490 | map_breakpoint_numbers |
13491 | (args, [&] (breakpoint *b) | |
13492 | { | |
13493 | iterate_over_related_breakpoints | |
13494 | (b, [&] (breakpoint *bpt) | |
13495 | { | |
13496 | enable_breakpoint_disp (bpt, disp_del, 1); | |
13497 | }); | |
13498 | }); | |
c906108c SS |
13499 | } |
13500 | \f | |
1f3b5d1b PP |
13501 | /* Invalidate last known value of any hardware watchpoint if |
13502 | the memory which that value represents has been written to by | |
13503 | GDB itself. */ | |
13504 | ||
13505 | static void | |
8de0566d YQ |
13506 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
13507 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
13508 | const bfd_byte *data) |
13509 | { | |
43892fdf | 13510 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 13511 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 13512 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 13513 | { |
3a5c3e22 | 13514 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 13515 | |
850645cf | 13516 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 13517 | { |
40cb8ca5 | 13518 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
13519 | if (loc->loc_type == bp_loc_hardware_watchpoint |
13520 | && loc->address + loc->length > addr | |
13521 | && addr + len > loc->address) | |
13522 | { | |
3a5c3e22 | 13523 | wp->val = NULL; |
4c1d86d9 | 13524 | wp->val_valid = false; |
3a5c3e22 PA |
13525 | } |
13526 | } | |
1f3b5d1b PP |
13527 | } |
13528 | } | |
13529 | ||
8181d85f DJ |
13530 | /* Create and insert a breakpoint for software single step. */ |
13531 | ||
13532 | void | |
6c95b8df | 13533 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 13534 | const address_space *aspace, |
4a64f543 | 13535 | CORE_ADDR next_pc) |
8181d85f | 13536 | { |
7c16b83e PA |
13537 | struct thread_info *tp = inferior_thread (); |
13538 | struct symtab_and_line sal; | |
13539 | CORE_ADDR pc = next_pc; | |
8181d85f | 13540 | |
34b7e8a6 PA |
13541 | if (tp->control.single_step_breakpoints == NULL) |
13542 | { | |
13543 | tp->control.single_step_breakpoints | |
5d5658a1 | 13544 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 13545 | } |
8181d85f | 13546 | |
7c16b83e PA |
13547 | sal = find_pc_line (pc, 0); |
13548 | sal.pc = pc; | |
13549 | sal.section = find_pc_overlay (pc); | |
13550 | sal.explicit_pc = 1; | |
06615628 | 13551 | tp->control.single_step_breakpoints->add_location (sal); |
8181d85f | 13552 | |
7c16b83e | 13553 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
13554 | } |
13555 | ||
93f9a11f YQ |
13556 | /* Insert single step breakpoints according to the current state. */ |
13557 | ||
13558 | int | |
13559 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
13560 | { | |
f5ea389a | 13561 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 13562 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 13563 | |
f5ea389a | 13564 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 13565 | |
a0ff9e1a | 13566 | if (!next_pcs.empty ()) |
93f9a11f | 13567 | { |
f5ea389a | 13568 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 13569 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 13570 | |
a0ff9e1a | 13571 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
13572 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
13573 | ||
93f9a11f YQ |
13574 | return 1; |
13575 | } | |
13576 | else | |
13577 | return 0; | |
13578 | } | |
13579 | ||
34b7e8a6 | 13580 | /* See breakpoint.h. */ |
f02253f1 HZ |
13581 | |
13582 | int | |
7c16b83e | 13583 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 13584 | const address_space *aspace, |
7c16b83e | 13585 | CORE_ADDR pc) |
1aafd4da | 13586 | { |
40cb8ca5 | 13587 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
13588 | if (loc->inserted |
13589 | && breakpoint_location_address_match (loc, aspace, pc)) | |
13590 | return 1; | |
1aafd4da | 13591 | |
7c16b83e | 13592 | return 0; |
ef370185 JB |
13593 | } |
13594 | ||
13595 | /* Check whether a software single-step breakpoint is inserted at | |
13596 | PC. */ | |
13597 | ||
13598 | int | |
accd0bcd | 13599 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
13600 | CORE_ADDR pc) |
13601 | { | |
43892fdf | 13602 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
13603 | { |
13604 | if (bpt->type == bp_single_step | |
13605 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
13606 | return 1; | |
13607 | } | |
13608 | return 0; | |
1aafd4da UW |
13609 | } |
13610 | ||
1042e4c0 SS |
13611 | /* Tracepoint-specific operations. */ |
13612 | ||
13613 | /* Set tracepoint count to NUM. */ | |
13614 | static void | |
13615 | set_tracepoint_count (int num) | |
13616 | { | |
13617 | tracepoint_count = num; | |
4fa62494 | 13618 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
13619 | } |
13620 | ||
70221824 | 13621 | static void |
0b39b52e | 13622 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 13623 | { |
ffc2605c TT |
13624 | event_location_up location = string_to_event_location (&arg, |
13625 | current_language); | |
bac7c5cf GB |
13626 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
13627 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 13628 | |
558a9d82 | 13629 | create_breakpoint (get_current_arch (), |
ffc2605c | 13630 | location.get (), |
10a636cc | 13631 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13632 | 0 /* tempflag */, |
13633 | bp_tracepoint /* type_wanted */, | |
13634 | 0 /* Ignore count */, | |
13635 | pending_break_support, | |
13636 | ops, | |
13637 | from_tty, | |
13638 | 1 /* enabled */, | |
13639 | 0 /* internal */, 0); | |
1042e4c0 SS |
13640 | } |
13641 | ||
70221824 | 13642 | static void |
0b39b52e | 13643 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 13644 | { |
ffc2605c TT |
13645 | event_location_up location = string_to_event_location (&arg, |
13646 | current_language); | |
558a9d82 | 13647 | create_breakpoint (get_current_arch (), |
ffc2605c | 13648 | location.get (), |
10a636cc | 13649 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13650 | 0 /* tempflag */, |
13651 | bp_fast_tracepoint /* type_wanted */, | |
13652 | 0 /* Ignore count */, | |
13653 | pending_break_support, | |
a0cd5f08 | 13654 | &base_breakpoint_ops, |
558a9d82 YQ |
13655 | from_tty, |
13656 | 1 /* enabled */, | |
13657 | 0 /* internal */, 0); | |
0fb4aa4b PA |
13658 | } |
13659 | ||
13660 | /* strace command implementation. Creates a static tracepoint. */ | |
13661 | ||
70221824 | 13662 | static void |
0b39b52e | 13663 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 13664 | { |
a678887d | 13665 | const struct breakpoint_ops *ops; |
ffc2605c | 13666 | event_location_up location; |
7b572efb | 13667 | enum bptype type; |
983af33b SDJ |
13668 | |
13669 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13670 | or with a normal static tracepoint. */ | |
61012eef | 13671 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
13672 | { |
13673 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 13674 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
7b572efb | 13675 | type = bp_static_marker_tracepoint; |
f00aae0f | 13676 | } |
983af33b | 13677 | else |
f00aae0f | 13678 | { |
a0cd5f08 | 13679 | ops = &base_breakpoint_ops; |
f00aae0f | 13680 | location = string_to_event_location (&arg, current_language); |
7b572efb | 13681 | type = bp_static_tracepoint; |
f00aae0f | 13682 | } |
983af33b | 13683 | |
558a9d82 | 13684 | create_breakpoint (get_current_arch (), |
ffc2605c | 13685 | location.get (), |
10a636cc | 13686 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 | 13687 | 0 /* tempflag */, |
7b572efb | 13688 | type /* type_wanted */, |
558a9d82 YQ |
13689 | 0 /* Ignore count */, |
13690 | pending_break_support, | |
13691 | ops, | |
13692 | from_tty, | |
13693 | 1 /* enabled */, | |
13694 | 0 /* internal */, 0); | |
7a697b8d SS |
13695 | } |
13696 | ||
409873ef SS |
13697 | /* Set up a fake reader function that gets command lines from a linked |
13698 | list that was acquired during tracepoint uploading. */ | |
13699 | ||
13700 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13701 | static int next_cmd; |
409873ef SS |
13702 | |
13703 | static char * | |
13704 | read_uploaded_action (void) | |
13705 | { | |
a18ba4e4 | 13706 | char *rslt = nullptr; |
409873ef | 13707 | |
a18ba4e4 SM |
13708 | if (next_cmd < this_utp->cmd_strings.size ()) |
13709 | { | |
67aa1f3c | 13710 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
13711 | next_cmd++; |
13712 | } | |
409873ef SS |
13713 | |
13714 | return rslt; | |
13715 | } | |
13716 | ||
00bf0b85 SS |
13717 | /* Given information about a tracepoint as recorded on a target (which |
13718 | can be either a live system or a trace file), attempt to create an | |
13719 | equivalent GDB tracepoint. This is not a reliable process, since | |
13720 | the target does not necessarily have all the information used when | |
13721 | the tracepoint was originally defined. */ | |
13722 | ||
d9b3f62e | 13723 | struct tracepoint * |
00bf0b85 | 13724 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13725 | { |
f2fc3015 TT |
13726 | const char *addr_str; |
13727 | char small_buf[100]; | |
d9b3f62e | 13728 | struct tracepoint *tp; |
fd9b8c24 | 13729 | |
409873ef | 13730 | if (utp->at_string) |
67aa1f3c | 13731 | addr_str = utp->at_string.get (); |
409873ef SS |
13732 | else |
13733 | { | |
13734 | /* In the absence of a source location, fall back to raw | |
13735 | address. Since there is no way to confirm that the address | |
13736 | means the same thing as when the trace was started, warn the | |
13737 | user. */ | |
3e43a32a MS |
13738 | warning (_("Uploaded tracepoint %d has no " |
13739 | "source location, using raw address"), | |
409873ef | 13740 | utp->number); |
8c042590 | 13741 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
13742 | addr_str = small_buf; |
13743 | } | |
13744 | ||
13745 | /* There's not much we can do with a sequence of bytecodes. */ | |
13746 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13747 | warning (_("Uploaded tracepoint %d condition " |
13748 | "has no source form, ignoring it"), | |
409873ef | 13749 | utp->number); |
d5551862 | 13750 | |
ffc2605c TT |
13751 | event_location_up location = string_to_event_location (&addr_str, |
13752 | current_language); | |
8cdf0e15 | 13753 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 13754 | location.get (), |
67aa1f3c | 13755 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 13756 | false /* force_condition */, |
e7e0cddf | 13757 | 0 /* parse cond/thread */, |
8cdf0e15 | 13758 | 0 /* tempflag */, |
0fb4aa4b | 13759 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13760 | 0 /* Ignore count */, |
13761 | pending_break_support, | |
a0cd5f08 | 13762 | &base_breakpoint_ops, |
8cdf0e15 | 13763 | 0 /* from_tty */, |
84f4c1fe | 13764 | utp->enabled /* enabled */, |
44f238bb PA |
13765 | 0 /* internal */, |
13766 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 13767 | return NULL; |
fd9b8c24 | 13768 | |
409873ef | 13769 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13770 | tp = get_tracepoint (tracepoint_count); |
13771 | gdb_assert (tp != NULL); | |
d5551862 | 13772 | |
00bf0b85 SS |
13773 | if (utp->pass > 0) |
13774 | { | |
8c042590 | 13775 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 13776 | tp->number); |
00bf0b85 | 13777 | |
409873ef | 13778 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13779 | } |
13780 | ||
409873ef SS |
13781 | /* If we have uploaded versions of the original commands, set up a |
13782 | special-purpose "reader" function and call the usual command line | |
13783 | reader, then pass the result to the breakpoint command-setting | |
13784 | function. */ | |
a18ba4e4 | 13785 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 13786 | { |
12973681 | 13787 | counted_command_line cmd_list; |
00bf0b85 | 13788 | |
409873ef | 13789 | this_utp = utp; |
3149d8c1 | 13790 | next_cmd = 0; |
d5551862 | 13791 | |
60b3cef2 | 13792 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 13793 | |
c1fc2657 | 13794 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 13795 | } |
a18ba4e4 SM |
13796 | else if (!utp->actions.empty () |
13797 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
13798 | warning (_("Uploaded tracepoint %d actions " |
13799 | "have no source form, ignoring them"), | |
409873ef | 13800 | utp->number); |
00bf0b85 | 13801 | |
f196051f | 13802 | /* Copy any status information that might be available. */ |
c1fc2657 | 13803 | tp->hit_count = utp->hit_count; |
f196051f SS |
13804 | tp->traceframe_usage = utp->traceframe_usage; |
13805 | ||
00bf0b85 | 13806 | return tp; |
d9b3f62e | 13807 | } |
00bf0b85 | 13808 | |
1042e4c0 SS |
13809 | /* Print information on tracepoint number TPNUM_EXP, or all if |
13810 | omitted. */ | |
13811 | ||
13812 | static void | |
1d12d88f | 13813 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 13814 | { |
79a45e25 | 13815 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13816 | int num_printed; |
1042e4c0 | 13817 | |
5c458ae8 | 13818 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
13819 | |
13820 | if (num_printed == 0) | |
1042e4c0 | 13821 | { |
e5a67952 | 13822 | if (args == NULL || *args == '\0') |
112e8700 | 13823 | uiout->message ("No tracepoints.\n"); |
d77f58be | 13824 | else |
112e8700 | 13825 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13826 | } |
ad443146 SS |
13827 | |
13828 | default_collect_info (); | |
1042e4c0 SS |
13829 | } |
13830 | ||
4a64f543 | 13831 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13832 | Not supported by all targets. */ |
13833 | static void | |
5fed81ff | 13834 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13835 | { |
13836 | enable_command (args, from_tty); | |
13837 | } | |
13838 | ||
4a64f543 | 13839 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13840 | Not supported by all targets. */ |
13841 | static void | |
5fed81ff | 13842 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13843 | { |
13844 | disable_command (args, from_tty); | |
13845 | } | |
13846 | ||
4a64f543 | 13847 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 13848 | static void |
4495129a | 13849 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 13850 | { |
1042e4c0 SS |
13851 | dont_repeat (); |
13852 | ||
13853 | if (arg == 0) | |
13854 | { | |
13855 | int breaks_to_delete = 0; | |
13856 | ||
13857 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
13858 | Do not delete internal or call-dummy breakpoints, these |
13859 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 13860 | argument. */ |
f6d17b2b | 13861 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 13862 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
13863 | { |
13864 | breaks_to_delete = 1; | |
13865 | break; | |
13866 | } | |
1042e4c0 SS |
13867 | |
13868 | /* Ask user only if there are some breakpoints to delete. */ | |
13869 | if (!from_tty | |
13870 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
13871 | { | |
1428b37a | 13872 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 13873 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 13874 | delete_breakpoint (b); |
1042e4c0 SS |
13875 | } |
13876 | } | |
13877 | else | |
48649e1b | 13878 | map_breakpoint_numbers |
b926417a | 13879 | (arg, [&] (breakpoint *br) |
48649e1b | 13880 | { |
b926417a | 13881 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13882 | }); |
1042e4c0 SS |
13883 | } |
13884 | ||
197f0a60 TT |
13885 | /* Helper function for trace_pass_command. */ |
13886 | ||
13887 | static void | |
d9b3f62e | 13888 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 13889 | { |
d9b3f62e | 13890 | tp->pass_count = count; |
76727919 | 13891 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 | 13892 | if (from_tty) |
6cb06a8c TT |
13893 | gdb_printf (_("Setting tracepoint %d's passcount to %d\n"), |
13894 | tp->number, count); | |
197f0a60 TT |
13895 | } |
13896 | ||
1042e4c0 SS |
13897 | /* Set passcount for tracepoint. |
13898 | ||
13899 | First command argument is passcount, second is tracepoint number. | |
13900 | If tracepoint number omitted, apply to most recently defined. | |
13901 | Also accepts special argument "all". */ | |
13902 | ||
13903 | static void | |
0b39b52e | 13904 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 13905 | { |
d9b3f62e | 13906 | struct tracepoint *t1; |
0b39b52e | 13907 | ULONGEST count; |
1042e4c0 SS |
13908 | |
13909 | if (args == 0 || *args == 0) | |
3e43a32a MS |
13910 | error (_("passcount command requires an " |
13911 | "argument (count + optional TP num)")); | |
1042e4c0 | 13912 | |
0b39b52e | 13913 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 13914 | |
529480d0 | 13915 | args = skip_spaces (args); |
1042e4c0 SS |
13916 | if (*args && strncasecmp (args, "all", 3) == 0) |
13917 | { | |
13918 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
13919 | if (*args) |
13920 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 13921 | |
f6d17b2b | 13922 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
13923 | { |
13924 | t1 = (struct tracepoint *) b; | |
13925 | trace_pass_set_count (t1, count, from_tty); | |
13926 | } | |
197f0a60 TT |
13927 | } |
13928 | else if (*args == '\0') | |
1042e4c0 | 13929 | { |
5fa1d40e | 13930 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 13931 | if (t1) |
197f0a60 TT |
13932 | trace_pass_set_count (t1, count, from_tty); |
13933 | } | |
13934 | else | |
13935 | { | |
bfd28288 PA |
13936 | number_or_range_parser parser (args); |
13937 | while (!parser.finished ()) | |
1042e4c0 | 13938 | { |
bfd28288 | 13939 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
13940 | if (t1) |
13941 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
13942 | } |
13943 | } | |
1042e4c0 SS |
13944 | } |
13945 | ||
d9b3f62e | 13946 | struct tracepoint * |
1042e4c0 SS |
13947 | get_tracepoint (int num) |
13948 | { | |
f6d17b2b | 13949 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 13950 | if (t->number == num) |
d9b3f62e | 13951 | return (struct tracepoint *) t; |
1042e4c0 SS |
13952 | |
13953 | return NULL; | |
13954 | } | |
13955 | ||
d5551862 SS |
13956 | /* Find the tracepoint with the given target-side number (which may be |
13957 | different from the tracepoint number after disconnecting and | |
13958 | reconnecting). */ | |
13959 | ||
d9b3f62e | 13960 | struct tracepoint * |
d5551862 SS |
13961 | get_tracepoint_by_number_on_target (int num) |
13962 | { | |
f6d17b2b | 13963 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
13964 | { |
13965 | struct tracepoint *t = (struct tracepoint *) b; | |
13966 | ||
13967 | if (t->number_on_target == num) | |
13968 | return t; | |
13969 | } | |
d5551862 SS |
13970 | |
13971 | return NULL; | |
13972 | } | |
13973 | ||
1042e4c0 | 13974 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 13975 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
13976 | If the argument is missing, the most recent tracepoint |
13977 | (tracepoint_count) is returned. */ | |
13978 | ||
d9b3f62e | 13979 | struct tracepoint * |
0b39b52e | 13980 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 13981 | number_or_range_parser *parser) |
1042e4c0 | 13982 | { |
1042e4c0 | 13983 | int tpnum; |
0b39b52e | 13984 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 13985 | |
bfd28288 | 13986 | if (parser != NULL) |
197f0a60 | 13987 | { |
bfd28288 PA |
13988 | gdb_assert (!parser->finished ()); |
13989 | tpnum = parser->get_number (); | |
197f0a60 TT |
13990 | } |
13991 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 13992 | tpnum = tracepoint_count; |
1042e4c0 | 13993 | else |
197f0a60 | 13994 | tpnum = get_number (arg); |
1042e4c0 SS |
13995 | |
13996 | if (tpnum <= 0) | |
13997 | { | |
13998 | if (instring && *instring) | |
6cb06a8c TT |
13999 | gdb_printf (_("bad tracepoint number at or near '%s'\n"), |
14000 | instring); | |
1042e4c0 | 14001 | else |
6cb06a8c | 14002 | gdb_printf (_("No previous tracepoint\n")); |
1042e4c0 SS |
14003 | return NULL; |
14004 | } | |
14005 | ||
f6d17b2b | 14006 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14007 | if (t->number == tpnum) |
d9b3f62e | 14008 | return (struct tracepoint *) t; |
1042e4c0 | 14009 | |
6cb06a8c | 14010 | gdb_printf ("No tracepoint number %d.\n", tpnum); |
1042e4c0 SS |
14011 | return NULL; |
14012 | } | |
14013 | ||
d9b3f62e | 14014 | void |
04d0163c | 14015 | breakpoint::print_recreate_thread (struct ui_file *fp) const |
d9b3f62e | 14016 | { |
04d0163c TT |
14017 | if (thread != -1) |
14018 | gdb_printf (fp, " thread %d", thread); | |
d9b3f62e | 14019 | |
04d0163c TT |
14020 | if (task != 0) |
14021 | gdb_printf (fp, " task %d", task); | |
d9b3f62e | 14022 | |
6cb06a8c | 14023 | gdb_printf (fp, "\n"); |
d9b3f62e PA |
14024 | } |
14025 | ||
6149aea9 PA |
14026 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14027 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14028 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14029 | true. */ |
6149aea9 | 14030 | |
1042e4c0 | 14031 | static void |
4495129a | 14032 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14033 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 14034 | { |
6149aea9 | 14035 | int any = 0; |
6149aea9 | 14036 | int extra_trace_bits = 0; |
1042e4c0 | 14037 | |
6149aea9 PA |
14038 | if (filename == 0 || *filename == 0) |
14039 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14040 | |
14041 | /* See if we have anything to save. */ | |
43892fdf | 14042 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14043 | { |
14044 | /* Skip internal and momentary breakpoints. */ | |
14045 | if (!user_breakpoint_p (tp)) | |
14046 | continue; | |
6149aea9 | 14047 | |
01add95b SM |
14048 | /* If we have a filter, only save the breakpoints it accepts. */ |
14049 | if (filter && !filter (tp)) | |
14050 | continue; | |
6149aea9 | 14051 | |
01add95b | 14052 | any = 1; |
6149aea9 | 14053 | |
01add95b SM |
14054 | if (is_tracepoint (tp)) |
14055 | { | |
14056 | extra_trace_bits = 1; | |
6149aea9 | 14057 | |
01add95b SM |
14058 | /* We can stop searching. */ |
14059 | break; | |
14060 | } | |
14061 | } | |
6149aea9 PA |
14062 | |
14063 | if (!any) | |
1042e4c0 | 14064 | { |
6149aea9 | 14065 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14066 | return; |
14067 | } | |
14068 | ||
ee0c3293 | 14069 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14070 | |
14071 | stdio_file fp; | |
14072 | ||
ee0c3293 | 14073 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14074 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14075 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14076 | |
6149aea9 | 14077 | if (extra_trace_bits) |
d7e74731 | 14078 | save_trace_state_variables (&fp); |
8bf6485c | 14079 | |
43892fdf | 14080 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14081 | { |
14082 | /* Skip internal and momentary breakpoints. */ | |
14083 | if (!user_breakpoint_p (tp)) | |
14084 | continue; | |
8bf6485c | 14085 | |
01add95b SM |
14086 | /* If we have a filter, only save the breakpoints it accepts. */ |
14087 | if (filter && !filter (tp)) | |
14088 | continue; | |
6149aea9 | 14089 | |
c47614fe | 14090 | tp->print_recreate (&fp); |
1042e4c0 | 14091 | |
01add95b SM |
14092 | /* Note, we can't rely on tp->number for anything, as we can't |
14093 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14094 | instead. */ | |
6149aea9 | 14095 | |
01add95b | 14096 | if (tp->cond_string) |
6f781ee3 | 14097 | fp.printf (" condition $bpnum %s\n", tp->cond_string.get ()); |
6149aea9 | 14098 | |
01add95b SM |
14099 | if (tp->ignore_count) |
14100 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 14101 | |
01add95b SM |
14102 | if (tp->type != bp_dprintf && tp->commands) |
14103 | { | |
14104 | fp.puts (" commands\n"); | |
1042e4c0 | 14105 | |
01add95b SM |
14106 | current_uiout->redirect (&fp); |
14107 | try | |
14108 | { | |
14109 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
14110 | } | |
14111 | catch (const gdb_exception &ex) | |
14112 | { | |
14113 | current_uiout->redirect (NULL); | |
14114 | throw; | |
14115 | } | |
6149aea9 | 14116 | |
01add95b SM |
14117 | current_uiout->redirect (NULL); |
14118 | fp.puts (" end\n"); | |
14119 | } | |
6149aea9 | 14120 | |
01add95b SM |
14121 | if (tp->enable_state == bp_disabled) |
14122 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 14123 | |
01add95b SM |
14124 | /* If this is a multi-location breakpoint, check if the locations |
14125 | should be individually disabled. Watchpoint locations are | |
14126 | special, and not user visible. */ | |
14127 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14128 | { | |
14129 | int n = 1; | |
40cb8ca5 | 14130 | |
01add95b SM |
14131 | for (bp_location *loc : tp->locations ()) |
14132 | { | |
14133 | if (!loc->enabled) | |
14134 | fp.printf ("disable $bpnum.%d\n", n); | |
14135 | ||
14136 | n++; | |
14137 | } | |
14138 | } | |
14139 | } | |
8bf6485c | 14140 | |
e0700ba4 SM |
14141 | if (extra_trace_bits && !default_collect.empty ()) |
14142 | fp.printf ("set default-collect %s\n", default_collect.c_str ()); | |
8bf6485c | 14143 | |
1042e4c0 | 14144 | if (from_tty) |
6cb06a8c | 14145 | gdb_printf (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14146 | } |
14147 | ||
14148 | /* The `save breakpoints' command. */ | |
14149 | ||
14150 | static void | |
4495129a | 14151 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14152 | { |
14153 | save_breakpoints (args, from_tty, NULL); | |
14154 | } | |
14155 | ||
14156 | /* The `save tracepoints' command. */ | |
14157 | ||
14158 | static void | |
4495129a | 14159 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14160 | { |
14161 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14162 | } |
14163 | ||
c906108c | 14164 | \f |
629500fa KS |
14165 | /* This help string is used to consolidate all the help string for specifying |
14166 | locations used by several commands. */ | |
14167 | ||
14168 | #define LOCATION_HELP_STRING \ | |
14169 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
14170 | source filename, function name, label name, and line number.\n\ | |
14171 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
14172 | function \"fact\" in the file \"factorial.c\", use\n\ | |
14173 | \"factorial.c:fact:the_top\".\n\ | |
14174 | \n\ | |
14175 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
14176 | program. Example: To specify the fourth byte past the start function\n\ | |
14177 | \"main\", use \"*main + 4\".\n\ | |
14178 | \n\ | |
14179 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
14180 | syntax to specify location parameters.\n\ | |
14181 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
14182 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
14183 | -function fact -label the_top\".\n\ |
14184 | \n\ | |
14185 | By default, a specified function is matched against the program's\n\ | |
14186 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
14187 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
14188 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
14189 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 14190 | specified name as a complete fully-qualified name instead." |
629500fa | 14191 | |
4a64f543 MS |
14192 | /* This help string is used for the break, hbreak, tbreak and thbreak |
14193 | commands. It is defined as a macro to prevent duplication. | |
14194 | COMMAND should be a string constant containing the name of the | |
14195 | command. */ | |
629500fa | 14196 | |
31e2b00f | 14197 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
14198 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
14199 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
14200 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
14201 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
14202 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
14203 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
14204 | LOCATION may be a linespec, address, or explicit location as described\n\ |
14205 | below.\n\ | |
14206 | \n\ | |
dc10affe PA |
14207 | With no LOCATION, uses current execution address of the selected\n\ |
14208 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
14209 | \n\ |
14210 | THREADNUM is the number from \"info threads\".\n\ | |
14211 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
14212 | \n\ |
14213 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
14214 | it is invalid for all current locations.\n\ | |
89549d7f | 14215 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14216 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
14217 | conditions are different.\n\ | |
31e2b00f AS |
14218 | \n\ |
14219 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
14220 | ||
44feb3ce TT |
14221 | /* List of subcommands for "catch". */ |
14222 | static struct cmd_list_element *catch_cmdlist; | |
14223 | ||
14224 | /* List of subcommands for "tcatch". */ | |
14225 | static struct cmd_list_element *tcatch_cmdlist; | |
14226 | ||
9ac4176b | 14227 | void |
a121b7c1 | 14228 | add_catch_command (const char *name, const char *docstring, |
5538b03c | 14229 | cmd_func_ftype *func, |
625e8578 | 14230 | completer_ftype *completer, |
44feb3ce TT |
14231 | void *user_data_catch, |
14232 | void *user_data_tcatch) | |
14233 | { | |
14234 | struct cmd_list_element *command; | |
14235 | ||
0450cc4c | 14236 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14237 | &catch_cmdlist); |
5538b03c | 14238 | command->func = func; |
0f8e2034 | 14239 | command->set_context (user_data_catch); |
a96d9b2e | 14240 | set_cmd_completer (command, completer); |
44feb3ce | 14241 | |
0450cc4c | 14242 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14243 | &tcatch_cmdlist); |
5538b03c | 14244 | command->func = func; |
0f8e2034 | 14245 | command->set_context (user_data_tcatch); |
a96d9b2e | 14246 | set_cmd_completer (command, completer); |
44feb3ce TT |
14247 | } |
14248 | ||
0574c78f GB |
14249 | /* Zero if any of the breakpoint's locations could be a location where |
14250 | functions have been inlined, nonzero otherwise. */ | |
14251 | ||
14252 | static int | |
14253 | is_non_inline_function (struct breakpoint *b) | |
14254 | { | |
14255 | /* The shared library event breakpoint is set on the address of a | |
14256 | non-inline function. */ | |
14257 | if (b->type == bp_shlib_event) | |
14258 | return 1; | |
14259 | ||
14260 | return 0; | |
14261 | } | |
14262 | ||
14263 | /* Nonzero if the specified PC cannot be a location where functions | |
14264 | have been inlined. */ | |
14265 | ||
14266 | int | |
accd0bcd | 14267 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
c272a98c | 14268 | const target_waitstatus &ws) |
0574c78f | 14269 | { |
43892fdf | 14270 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
14271 | { |
14272 | if (!is_non_inline_function (b)) | |
14273 | continue; | |
14274 | ||
40cb8ca5 | 14275 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
14276 | { |
14277 | if (!bl->shlib_disabled | |
09ac7c10 | 14278 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
14279 | return 1; |
14280 | } | |
14281 | } | |
14282 | ||
14283 | return 0; | |
14284 | } | |
14285 | ||
2f202fde JK |
14286 | /* Remove any references to OBJFILE which is going to be freed. */ |
14287 | ||
14288 | void | |
14289 | breakpoint_free_objfile (struct objfile *objfile) | |
14290 | { | |
48d7020b | 14291 | for (bp_location *loc : all_bp_locations ()) |
3c86fae3 | 14292 | if (loc->symtab != NULL && loc->symtab->compunit ()->objfile () == objfile) |
2f202fde JK |
14293 | loc->symtab = NULL; |
14294 | } | |
14295 | ||
8bfd80db YQ |
14296 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
14297 | ||
14298 | static struct cmd_list_element *enablebreaklist = NULL; | |
14299 | ||
8588b356 SM |
14300 | /* See breakpoint.h. */ |
14301 | ||
14302 | cmd_list_element *commands_cmd_element = nullptr; | |
14303 | ||
6c265988 | 14304 | void _initialize_breakpoint (); |
c906108c | 14305 | void |
6c265988 | 14306 | _initialize_breakpoint () |
c906108c SS |
14307 | { |
14308 | struct cmd_list_element *c; | |
14309 | ||
c90e7d63 SM |
14310 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
14311 | "breakpoint"); | |
14312 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
14313 | "breakpoint"); | |
14314 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
14315 | "breakpoint"); | |
84acb35a | 14316 | |
c906108c SS |
14317 | breakpoint_chain = 0; |
14318 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
14319 | before a breakpoint is set. */ | |
14320 | breakpoint_count = 0; | |
14321 | ||
1042e4c0 SS |
14322 | tracepoint_count = 0; |
14323 | ||
1bedd215 AC |
14324 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
14325 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
14326 | Usage is `ignore N COUNT'.")); | |
c906108c | 14327 | |
8588b356 SM |
14328 | commands_cmd_element = add_com ("commands", class_breakpoint, |
14329 | commands_command, _("\ | |
18da0c51 MG |
14330 | Set commands to be executed when the given breakpoints are hit.\n\ |
14331 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
14332 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
14333 | (e.g. `5-7').\n\ | |
c906108c SS |
14334 | With no argument, the targeted breakpoint is the last one set.\n\ |
14335 | The commands themselves follow starting on the next line.\n\ | |
14336 | Type a line containing \"end\" to indicate the end of them.\n\ | |
14337 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 14338 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 14339 | |
b1d4d8d1 TBA |
14340 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
14341 | static std::string condition_command_help | |
14342 | = gdb::option::build_help (_("\ | |
1bedd215 | 14343 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 14344 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 14345 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
14346 | \n\ |
14347 | Options:\n\ | |
14348 | %OPTIONS%"), cc_opts); | |
14349 | ||
14350 | c = add_com ("condition", class_breakpoint, condition_command, | |
14351 | condition_command_help.c_str ()); | |
14352 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 14353 | |
1bedd215 | 14354 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 14355 | Set a temporary breakpoint.\n\ |
c906108c SS |
14356 | Like \"break\" except the breakpoint is only temporary,\n\ |
14357 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
14358 | by using \"enable delete\" on the breakpoint number.\n\ |
14359 | \n" | |
14360 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 14361 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 14362 | |
1bedd215 | 14363 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 14364 | Set a hardware assisted breakpoint.\n\ |
c906108c | 14365 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
14366 | some target hardware may not have this support.\n\ |
14367 | \n" | |
14368 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 14369 | set_cmd_completer (c, location_completer); |
c906108c | 14370 | |
1bedd215 | 14371 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 14372 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 14373 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
14374 | so it will be deleted when hit.\n\ |
14375 | \n" | |
14376 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 14377 | set_cmd_completer (c, location_completer); |
c906108c | 14378 | |
3947f654 SM |
14379 | cmd_list_element *enable_cmd |
14380 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
14381 | Enable all or some breakpoints.\n\ |
14382 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14383 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14384 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
14385 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 14386 | With a subcommand you can enable temporarily."), |
3947f654 | 14387 | &enablelist, 1, &cmdlist); |
c906108c | 14388 | |
3947f654 | 14389 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 14390 | |
84951ab5 | 14391 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
14392 | Enable all or some breakpoints.\n\ |
14393 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14394 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14395 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 14396 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 14397 | &enablebreaklist, 1, &enablelist); |
c906108c | 14398 | |
1a966eab | 14399 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14400 | Enable some breakpoints for one hit.\n\ |
14401 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 14402 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
14403 | &enablebreaklist); |
14404 | ||
1a966eab | 14405 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14406 | Enable some breakpoints and delete when hit.\n\ |
14407 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 14408 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14409 | &enablebreaklist); |
14410 | ||
816338b5 | 14411 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
14412 | Enable some breakpoints for COUNT hits.\n\ |
14413 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14414 | If a breakpoint is hit while enabled in this fashion,\n\ |
14415 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
14416 | &enablebreaklist); | |
14417 | ||
1a966eab | 14418 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14419 | Enable some breakpoints and delete when hit.\n\ |
14420 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 14421 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14422 | &enablelist); |
14423 | ||
1a966eab | 14424 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14425 | Enable some breakpoints for one hit.\n\ |
14426 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 14427 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
14428 | &enablelist); |
14429 | ||
14430 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
14431 | Enable some breakpoints for COUNT hits.\n\ |
14432 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14433 | If a breakpoint is hit while enabled in this fashion,\n\ |
14434 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
14435 | &enablelist); |
14436 | ||
3947f654 SM |
14437 | cmd_list_element *disable_cmd |
14438 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
14439 | Disable all or some breakpoints.\n\ |
14440 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14441 | Arguments are breakpoint numbers with spaces in between.\n\ |
14442 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14443 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
14444 | &disablelist, 1, &cmdlist); |
14445 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
14446 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 14447 | |
57b4f16e | 14448 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
14449 | Disable all or some breakpoints.\n\ |
14450 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14451 | Arguments are breakpoint numbers with spaces in between.\n\ |
14452 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14453 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 14454 | This command may be abbreviated \"disable\"."), |
c906108c SS |
14455 | &disablelist); |
14456 | ||
3947f654 SM |
14457 | cmd_list_element *delete_cmd |
14458 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
14459 | Delete all or some breakpoints.\n\ |
14460 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14461 | Arguments are breakpoint numbers with spaces in between.\n\ |
14462 | To delete all breakpoints, give no argument.\n\ | |
14463 | \n\ | |
590042fc | 14464 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
14465 | &deletelist, 1, &cmdlist); |
14466 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
14467 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 14468 | |
57b4f16e | 14469 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
14470 | Delete all or some breakpoints or auto-display expressions.\n\ |
14471 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14472 | Arguments are breakpoint numbers with spaces in between.\n\ |
14473 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 14474 | This command may be abbreviated \"delete\"."), |
c906108c SS |
14475 | &deletelist); |
14476 | ||
3947f654 SM |
14477 | cmd_list_element *clear_cmd |
14478 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
14479 | Clear breakpoint at specified location.\n\ |
14480 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
14481 | \n\ |
14482 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 14483 | is executing in.\n" |
89549d7f | 14484 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 14485 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 14486 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 14487 | |
3947f654 SM |
14488 | cmd_list_element *break_cmd |
14489 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 14490 | Set breakpoint at specified location.\n" |
31e2b00f | 14491 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 14492 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 14493 | |
3947f654 SM |
14494 | add_com_alias ("b", break_cmd, class_run, 1); |
14495 | add_com_alias ("br", break_cmd, class_run, 1); | |
14496 | add_com_alias ("bre", break_cmd, class_run, 1); | |
14497 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 14498 | |
e0f25bd9 SM |
14499 | cmd_list_element *info_breakpoints_cmd |
14500 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 14501 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14502 | The \"Type\" column indicates one of:\n\ |
14503 | \tbreakpoint - normal breakpoint\n\ | |
14504 | \twatchpoint - watchpoint\n\ | |
14505 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14506 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14507 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14508 | address and file/line number respectively.\n\ |
14509 | \n\ | |
14510 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14511 | are set to the address of the last breakpoint listed unless the command\n\ |
14512 | is prefixed with \"server \".\n\n\ | |
c906108c | 14513 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14514 | breakpoint set.")); |
c906108c | 14515 | |
e0f25bd9 | 14516 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 14517 | |
1a966eab AC |
14518 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14519 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14520 | The \"Type\" column indicates one of:\n\ |
14521 | \tbreakpoint - normal breakpoint\n\ | |
14522 | \twatchpoint - watchpoint\n\ | |
14523 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14524 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14525 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14526 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14527 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14528 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14529 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14530 | address and file/line number respectively.\n\ |
14531 | \n\ | |
14532 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14533 | are set to the address of the last breakpoint listed unless the command\n\ |
14534 | is prefixed with \"server \".\n\n\ | |
c906108c | 14535 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14536 | breakpoint set."), |
c906108c SS |
14537 | &maintenanceinfolist); |
14538 | ||
3b6acaee | 14539 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 14540 | Set catchpoints to catch events."), |
2f822da5 | 14541 | &catch_cmdlist, |
3b6acaee | 14542 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14543 | |
3b6acaee | 14544 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 14545 | Set temporary catchpoints to catch events."), |
2f822da5 | 14546 | &tcatch_cmdlist, |
3b6acaee | 14547 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14548 | |
a15a5258 AB |
14549 | const auto opts = make_watch_options_def_group (nullptr); |
14550 | ||
14551 | static const std::string watch_help = gdb::option::build_help (_("\ | |
14552 | Set a watchpoint for EXPRESSION.\n\ | |
14553 | Usage: watch [-location] EXPRESSION\n\ | |
14554 | \n\ | |
14555 | Options:\n\ | |
14556 | %OPTIONS%\n\ | |
14557 | \n\ | |
c906108c | 14558 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
14559 | an expression changes."), opts); |
14560 | c = add_com ("watch", class_breakpoint, watch_command, | |
14561 | watch_help.c_str ()); | |
14562 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14563 | ||
14564 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
14565 | Set a read watchpoint for EXPRESSION.\n\ | |
14566 | Usage: rwatch [-location] EXPRESSION\n\ | |
14567 | \n\ | |
14568 | Options:\n\ | |
14569 | %OPTIONS%\n\ | |
14570 | \n\ | |
14571 | A read watchpoint stops execution of your program whenever the value of\n\ | |
14572 | an expression is read."), opts); | |
14573 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
14574 | rwatch_help.c_str ()); | |
14575 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14576 | ||
14577 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
14578 | Set an access watchpoint for EXPRESSION.\n\ | |
14579 | Usage: awatch [-location] EXPRESSION\n\ | |
14580 | \n\ | |
14581 | Options:\n\ | |
14582 | %OPTIONS%\n\ | |
14583 | \n\ | |
14584 | An access watchpoint stops execution of your program whenever the value\n\ | |
14585 | of an expression is either read or written."), opts); | |
14586 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
14587 | awatch_help.c_str ()); | |
14588 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 14589 | |
11db9430 | 14590 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 14591 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14592 | |
920d2a44 AC |
14593 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14594 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14595 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14596 | &can_use_hw_watchpoints, _("\ | |
14597 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14598 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14599 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14600 | such is available. (However, any hardware watchpoints that were\n\ | |
14601 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14602 | hardware.)"), |
14603 | NULL, | |
920d2a44 | 14604 | show_can_use_hw_watchpoints, |
85c07804 | 14605 | &setlist, &showlist); |
c906108c SS |
14606 | |
14607 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14608 | |
1042e4c0 SS |
14609 | /* Tracepoint manipulation commands. */ |
14610 | ||
3947f654 SM |
14611 | cmd_list_element *trace_cmd |
14612 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 14613 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
14614 | \n" |
14615 | BREAK_ARGS_HELP ("trace") "\n\ | |
14616 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 14617 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 14618 | |
3947f654 SM |
14619 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
14620 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
14621 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
14622 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 14623 | |
7a697b8d | 14624 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 14625 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
14626 | \n" |
14627 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14628 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14629 | set_cmd_completer (c, location_completer); | |
14630 | ||
0fb4aa4b | 14631 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 14632 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
14633 | \n\ |
14634 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
14635 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
14636 | or -m MARKER_ID.\n\n\ | |
14637 | If a marker id is specified, probe the marker with that name. With\n\ | |
14638 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
14639 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
14640 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14641 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14642 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14643 | \n\ | |
14644 | CONDITION is a boolean expression.\n\ | |
89549d7f | 14645 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14646 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14647 | conditions are different.\n\ | |
0fb4aa4b PA |
14648 | \n\ |
14649 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14650 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14651 | set_cmd_completer (c, location_completer); | |
14652 | ||
e0f25bd9 SM |
14653 | cmd_list_element *info_tracepoints_cmd |
14654 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 14655 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14656 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14657 | last tracepoint set.")); | |
14658 | ||
e0f25bd9 | 14659 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 14660 | |
5e84b7ee SM |
14661 | cmd_list_element *delete_tracepoints_cmd |
14662 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
14663 | Delete specified tracepoints.\n\ |
14664 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14665 | No argument means delete all tracepoints."), | |
14666 | &deletelist); | |
5e84b7ee | 14667 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
14668 | |
14669 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14670 | Disable specified tracepoints.\n\ | |
14671 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14672 | No argument means disable all tracepoints."), | |
14673 | &disablelist); | |
14674 | deprecate_cmd (c, "disable"); | |
14675 | ||
14676 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14677 | Enable specified tracepoints.\n\ | |
14678 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14679 | No argument means enable all tracepoints."), | |
14680 | &enablelist); | |
14681 | deprecate_cmd (c, "enable"); | |
14682 | ||
14683 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14684 | Set the passcount for a tracepoint.\n\ | |
14685 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14686 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14687 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14688 | ||
0743fc83 TT |
14689 | add_basic_prefix_cmd ("save", class_breakpoint, |
14690 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 14691 | &save_cmdlist, |
0743fc83 | 14692 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
14693 | |
14694 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14695 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14696 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14697 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14698 | session to restore them."), | |
14699 | &save_cmdlist); | |
14700 | set_cmd_completer (c, filename_completer); | |
14701 | ||
3947f654 SM |
14702 | cmd_list_element *save_tracepoints_cmd |
14703 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14704 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14705 | Use the 'source' command in another debug session to restore them."), |
14706 | &save_cmdlist); | |
3947f654 | 14707 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 14708 | |
3947f654 | 14709 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
14710 | deprecate_cmd (c, "save tracepoints"); |
14711 | ||
f54bdb6d SM |
14712 | add_setshow_prefix_cmd ("breakpoint", class_maintenance, |
14713 | _("\ | |
590042fc | 14714 | Breakpoint specific settings.\n\ |
fa8d40ab | 14715 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14716 | pending breakpoint behavior."), |
f54bdb6d | 14717 | _("\ |
590042fc | 14718 | Breakpoint specific settings.\n\ |
fa8d40ab | 14719 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14720 | pending breakpoint behavior."), |
f54bdb6d SM |
14721 | &breakpoint_set_cmdlist, &breakpoint_show_cmdlist, |
14722 | &setlist, &showlist); | |
fa8d40ab | 14723 | |
7915a72c AC |
14724 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14725 | &pending_break_support, _("\ | |
14726 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14727 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14728 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14729 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14730 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14731 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14732 | NULL, |
920d2a44 | 14733 | show_pending_break_support, |
6e1d7d6c AC |
14734 | &breakpoint_set_cmdlist, |
14735 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14736 | |
14737 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14738 | |
14739 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14740 | &automatic_hardware_breakpoints, _("\ | |
14741 | Set automatic usage of hardware breakpoints."), _("\ | |
14742 | Show automatic usage of hardware breakpoints."), _("\ | |
14743 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14744 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14745 | a warning will be emitted for such breakpoints."), | |
14746 | NULL, | |
14747 | show_automatic_hardware_breakpoints, | |
14748 | &breakpoint_set_cmdlist, | |
14749 | &breakpoint_show_cmdlist); | |
74960c60 | 14750 | |
a25a5a45 PA |
14751 | add_setshow_boolean_cmd ("always-inserted", class_support, |
14752 | &always_inserted_mode, _("\ | |
74960c60 VP |
14753 | Set mode for inserting breakpoints."), _("\ |
14754 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
14755 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
14756 | they're created, kept inserted even when execution stops, and removed\n\ | |
14757 | only when the user deletes them. When this mode is off (the default),\n\ | |
14758 | breakpoints are inserted only when execution continues, and removed\n\ | |
14759 | when execution stops."), | |
72d0e2c5 YQ |
14760 | NULL, |
14761 | &show_always_inserted_mode, | |
14762 | &breakpoint_set_cmdlist, | |
14763 | &breakpoint_show_cmdlist); | |
f1310107 | 14764 | |
b775012e LM |
14765 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
14766 | condition_evaluation_enums, | |
14767 | &condition_evaluation_mode_1, _("\ | |
14768 | Set mode of breakpoint condition evaluation."), _("\ | |
14769 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 14770 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
14771 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
14772 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
14773 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
14774 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
14775 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 14776 | be set to \"host\"."), |
b775012e LM |
14777 | &set_condition_evaluation_mode, |
14778 | &show_condition_evaluation_mode, | |
14779 | &breakpoint_set_cmdlist, | |
14780 | &breakpoint_show_cmdlist); | |
14781 | ||
f1310107 TJB |
14782 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
14783 | Set a breakpoint for an address range.\n\ | |
14784 | break-range START-LOCATION, END-LOCATION\n\ | |
14785 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14786 | LINENUM, for that line in the current file,\n\ | |
14787 | FILE:LINENUM, for that line in that file,\n\ | |
14788 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 14789 | or the start of the range\n\ |
f1310107 TJB |
14790 | FUNCTION, for the first line in that function,\n\ |
14791 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14792 | *ADDRESS, for the instruction at that address.\n\ | |
14793 | \n\ | |
14794 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14795 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14796 | range (including START-LOCATION and END-LOCATION).")); | |
14797 | ||
e7e0cddf | 14798 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 14799 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 14800 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
14801 | location may be a linespec, explicit, or address location.\n" |
14802 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
14803 | set_cmd_completer (c, location_completer); |
14804 | ||
14805 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
14806 | dprintf_style_enums, &dprintf_style, _("\ | |
14807 | Set the style of usage for dynamic printf."), _("\ | |
14808 | Show the style of usage for dynamic printf."), _("\ | |
14809 | This setting chooses how GDB will do a dynamic printf.\n\ | |
14810 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
14811 | console, as with the \"printf\" command.\n\ | |
14812 | If the value is \"call\", the print is done by calling a function in your\n\ | |
14813 | program; by default printf(), but you can choose a different function or\n\ | |
14814 | output stream by setting dprintf-function and dprintf-channel."), | |
14815 | update_dprintf_commands, NULL, | |
14816 | &setlist, &showlist); | |
14817 | ||
e7e0cddf SS |
14818 | add_setshow_string_cmd ("dprintf-function", class_support, |
14819 | &dprintf_function, _("\ | |
590042fc PW |
14820 | Set the function to use for dynamic printf."), _("\ |
14821 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14822 | update_dprintf_commands, NULL, |
14823 | &setlist, &showlist); | |
14824 | ||
e7e0cddf SS |
14825 | add_setshow_string_cmd ("dprintf-channel", class_support, |
14826 | &dprintf_channel, _("\ | |
590042fc PW |
14827 | Set the channel to use for dynamic printf."), _("\ |
14828 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14829 | update_dprintf_commands, NULL, |
14830 | &setlist, &showlist); | |
14831 | ||
d3ce09f5 SS |
14832 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
14833 | &disconnected_dprintf, _("\ | |
14834 | Set whether dprintf continues after GDB disconnects."), _("\ | |
14835 | Show whether dprintf continues after GDB disconnects."), _("\ | |
14836 | Use this to let dprintf commands continue to hit and produce output\n\ | |
14837 | even if GDB disconnects or detaches from the target."), | |
14838 | NULL, | |
14839 | NULL, | |
14840 | &setlist, &showlist); | |
14841 | ||
14842 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
14843 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
14844 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
14845 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
14846 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 14847 | |
491144b5 | 14848 | automatic_hardware_breakpoints = true; |
f3b1572e | 14849 | |
c90e7d63 SM |
14850 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
14851 | "breakpoint"); | |
14852 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
14853 | "breakpoint"); | |
c906108c | 14854 | } |