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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, | |
eee031e2 | 103 | int, int, int, unsigned); |
983af33b | 104 | |
6c5b2ebe | 105 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 106 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 107 | struct program_space *search_pspace); |
983af33b | 108 | |
a6535de1 TT |
109 | static int can_use_hardware_watchpoint |
110 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 111 | |
b713485d | 112 | static void mention (const breakpoint *); |
c906108c | 113 | |
7a3e3265 | 114 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
c906108c | 115 | |
752a2291 PA |
116 | static breakpoint *add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b); |
117 | ||
06edf0c0 PA |
118 | static struct breakpoint * |
119 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
120 | enum bptype type, | |
a1aa2221 | 121 | int loc_enabled); |
06edf0c0 | 122 | |
76897487 KB |
123 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
124 | ||
a6d9a66e UW |
125 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
126 | CORE_ADDR bpaddr, | |
dda83cd7 | 127 | enum bptype bptype); |
76897487 | 128 | |
85d721b8 PA |
129 | static int watchpoint_locations_match (struct bp_location *loc1, |
130 | struct bp_location *loc2); | |
131 | ||
7f32a4d5 PA |
132 | static int breakpoint_locations_match (struct bp_location *loc1, |
133 | struct bp_location *loc2, | |
134 | bool sw_hw_bps_match = false); | |
135 | ||
f1310107 | 136 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 137 | const struct address_space *aspace, |
f1310107 TJB |
138 | CORE_ADDR addr); |
139 | ||
d35ae833 | 140 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 141 | const address_space *, |
d35ae833 PA |
142 | CORE_ADDR, int); |
143 | ||
834c0d03 | 144 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 145 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 146 | |
313f3b21 | 147 | static enum print_stop_action print_bp_stop_message (bpstat *bs); |
c906108c | 148 | |
a14ed312 | 149 | static int hw_breakpoint_used_count (void); |
c906108c | 150 | |
a1398e0c PA |
151 | static int hw_watchpoint_use_count (struct breakpoint *); |
152 | ||
153 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
154 | enum bptype type, | |
155 | int *other_type_used); | |
c906108c | 156 | |
816338b5 SS |
157 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
158 | int count); | |
c906108c | 159 | |
f431efe5 | 160 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 161 | |
5d926615 TT |
162 | static std::vector<symtab_and_line> bkpt_probe_decode_location |
163 | (struct breakpoint *b, | |
164 | struct event_location *location, | |
165 | struct program_space *search_pspace); | |
166 | ||
6e14e441 PA |
167 | static bool bl_address_is_meaningful (bp_location *loc); |
168 | ||
44702360 PA |
169 | /* update_global_location_list's modes of operation wrt to whether to |
170 | insert locations now. */ | |
171 | enum ugll_insert_mode | |
172 | { | |
173 | /* Don't insert any breakpoint locations into the inferior, only | |
174 | remove already-inserted locations that no longer should be | |
175 | inserted. Functions that delete a breakpoint or breakpoints | |
176 | should specify this mode, so that deleting a breakpoint doesn't | |
177 | have the side effect of inserting the locations of other | |
178 | breakpoints that are marked not-inserted, but should_be_inserted | |
179 | returns true on them. | |
180 | ||
181 | This behavior is useful is situations close to tear-down -- e.g., | |
182 | after an exec, while the target still has execution, but | |
183 | breakpoint shadows of the previous executable image should *NOT* | |
184 | be restored to the new image; or before detaching, where the | |
185 | target still has execution and wants to delete breakpoints from | |
186 | GDB's lists, and all breakpoints had already been removed from | |
187 | the inferior. */ | |
188 | UGLL_DONT_INSERT, | |
189 | ||
a25a5a45 PA |
190 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
191 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
192 | UGLL_MAY_INSERT, |
193 | ||
a25a5a45 PA |
194 | /* Insert locations now, irrespective of |
195 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
196 | stopped right now, and the user did "continue". We need to | |
197 | insert breakpoints _before_ resuming the target, but | |
198 | UGLL_MAY_INSERT wouldn't insert them, because | |
199 | breakpoints_should_be_inserted_now returns false at that point, | |
200 | as no thread is running yet. */ | |
04086b45 | 201 | UGLL_INSERT |
44702360 PA |
202 | }; |
203 | ||
204 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 205 | |
44702360 | 206 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 207 | |
74960c60 | 208 | static void insert_breakpoint_locations (void); |
a5606eee | 209 | |
0b39b52e | 210 | static void trace_pass_command (const char *, int); |
1042e4c0 | 211 | |
558a9d82 YQ |
212 | static void set_tracepoint_count (int num); |
213 | ||
f2478a7e | 214 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 215 | |
983af33b SDJ |
216 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
217 | otherwise. */ | |
218 | ||
219 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 220 | |
8613a476 TT |
221 | static void bkpt_probe_create_sals_from_location |
222 | (struct event_location *location, | |
03ada39e | 223 | struct linespec_result *canonical); |
8613a476 TT |
224 | static void tracepoint_probe_create_sals_from_location |
225 | (struct event_location *location, | |
03ada39e | 226 | struct linespec_result *canonical); |
8613a476 | 227 | |
a678887d | 228 | const struct breakpoint_ops base_breakpoint_ops = |
8613a476 TT |
229 | { |
230 | create_sals_from_location_default, | |
eee031e2 | 231 | create_breakpoints_sal, |
8613a476 TT |
232 | }; |
233 | ||
55aa24fb | 234 | /* Breakpoints set on probes. */ |
a678887d | 235 | static const struct breakpoint_ops bkpt_probe_breakpoint_ops = |
8613a476 TT |
236 | { |
237 | bkpt_probe_create_sals_from_location, | |
eee031e2 | 238 | create_breakpoints_sal, |
8613a476 | 239 | }; |
55aa24fb | 240 | |
bac7c5cf | 241 | /* Tracepoints set on probes. */ |
a678887d | 242 | static const struct breakpoint_ops tracepoint_probe_breakpoint_ops = |
8613a476 TT |
243 | { |
244 | tracepoint_probe_create_sals_from_location, | |
eee031e2 | 245 | create_breakpoints_sal, |
8613a476 | 246 | }; |
bac7c5cf | 247 | |
1c2cbcf1 PA |
248 | /* Implementation of abstract dtors. These must exist to satisfy the |
249 | linker. */ | |
250 | ||
251 | breakpoint::~breakpoint () | |
252 | { | |
253 | } | |
254 | ||
255 | base_breakpoint::~base_breakpoint () | |
256 | { | |
257 | } | |
258 | ||
259 | catchpoint::~catchpoint () | |
260 | { | |
261 | } | |
262 | ||
098f1272 TT |
263 | /* The structure to be used in regular breakpoints. */ |
264 | struct ordinary_breakpoint : public base_breakpoint | |
265 | { | |
73063f51 TT |
266 | using base_breakpoint::base_breakpoint; |
267 | ||
7dd8e7ae | 268 | int resources_needed (const struct bp_location *) override; |
7bd86313 | 269 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 270 | void print_mention () const override; |
4d1ae558 | 271 | void print_recreate (struct ui_file *fp) const override; |
098f1272 TT |
272 | }; |
273 | ||
274 | /* Internal breakpoints. */ | |
275 | struct internal_breakpoint : public base_breakpoint | |
276 | { | |
752a2291 PA |
277 | internal_breakpoint (struct gdbarch *gdbarch, |
278 | enum bptype type, CORE_ADDR address) | |
279 | : base_breakpoint (gdbarch, type) | |
280 | { | |
281 | symtab_and_line sal; | |
282 | sal.pc = address; | |
283 | sal.section = find_pc_overlay (sal.pc); | |
284 | sal.pspace = current_program_space; | |
285 | add_location (sal); | |
286 | ||
287 | pspace = current_program_space; | |
288 | disposition = disp_donttouch; | |
289 | } | |
73063f51 | 290 | |
c359fff5 TT |
291 | void re_set () override; |
292 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 293 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 294 | void print_mention () const override; |
098f1272 TT |
295 | }; |
296 | ||
297 | /* Momentary breakpoints. */ | |
298 | struct momentary_breakpoint : public base_breakpoint | |
299 | { | |
73063f51 TT |
300 | using base_breakpoint::base_breakpoint; |
301 | ||
1fd30a47 TT |
302 | void re_set () override; |
303 | void check_status (struct bpstat *bs) override; | |
7bd86313 | 304 | enum print_stop_action print_it (const bpstat *bs) const override; |
b713485d | 305 | void print_mention () const override; |
098f1272 TT |
306 | }; |
307 | ||
308 | /* DPrintf breakpoints. */ | |
5ad71d67 | 309 | struct dprintf_breakpoint : public ordinary_breakpoint |
098f1272 | 310 | { |
73063f51 TT |
311 | using ordinary_breakpoint::ordinary_breakpoint; |
312 | ||
f293a0b5 TT |
313 | void re_set () override; |
314 | int breakpoint_hit (const struct bp_location *bl, | |
315 | const address_space *aspace, | |
316 | CORE_ADDR bp_addr, | |
317 | const target_waitstatus &ws) override; | |
4d1ae558 | 318 | void print_recreate (struct ui_file *fp) const override; |
f293a0b5 | 319 | void after_condition_true (struct bpstat *bs) override; |
098f1272 TT |
320 | }; |
321 | ||
ec45bb67 TT |
322 | /* Ranged breakpoints. */ |
323 | struct ranged_breakpoint : public ordinary_breakpoint | |
324 | { | |
b925bf21 PA |
325 | explicit ranged_breakpoint (struct gdbarch *gdbarch, |
326 | const symtab_and_line &sal_start, | |
327 | int length, | |
328 | event_location_up start_location, | |
329 | event_location_up end_location) | |
73063f51 TT |
330 | : ordinary_breakpoint (gdbarch, bp_hardware_breakpoint) |
331 | { | |
b925bf21 PA |
332 | bp_location *bl = add_location (sal_start); |
333 | bl->length = length; | |
334 | ||
335 | disposition = disp_donttouch; | |
336 | ||
337 | location = std::move (start_location); | |
338 | location_range_end = std::move (end_location); | |
73063f51 TT |
339 | } |
340 | ||
ec45bb67 TT |
341 | int breakpoint_hit (const struct bp_location *bl, |
342 | const address_space *aspace, | |
343 | CORE_ADDR bp_addr, | |
344 | const target_waitstatus &ws) override; | |
345 | int resources_needed (const struct bp_location *) override; | |
7bd86313 | 346 | enum print_stop_action print_it (const bpstat *bs) const override; |
a67bcaba | 347 | bool print_one (bp_location **) const override; |
ec45bb67 | 348 | void print_one_detail (struct ui_out *) const override; |
b713485d | 349 | void print_mention () const override; |
4d1ae558 | 350 | void print_recreate (struct ui_file *fp) const override; |
ec45bb67 TT |
351 | }; |
352 | ||
6d7a8c56 TT |
353 | /* Static tracepoints with marker (`-m'). */ |
354 | struct static_marker_tracepoint : public tracepoint | |
355 | { | |
73063f51 TT |
356 | using tracepoint::tracepoint; |
357 | ||
6d7a8c56 TT |
358 | std::vector<symtab_and_line> decode_location |
359 | (struct event_location *location, | |
360 | struct program_space *search_pspace) override; | |
361 | }; | |
362 | ||
d3ce09f5 SS |
363 | /* The style in which to perform a dynamic printf. This is a user |
364 | option because different output options have different tradeoffs; | |
365 | if GDB does the printing, there is better error handling if there | |
366 | is a problem with any of the arguments, but using an inferior | |
367 | function lets you have special-purpose printers and sending of | |
368 | output to the same place as compiled-in print functions. */ | |
369 | ||
370 | static const char dprintf_style_gdb[] = "gdb"; | |
371 | static const char dprintf_style_call[] = "call"; | |
372 | static const char dprintf_style_agent[] = "agent"; | |
373 | static const char *const dprintf_style_enums[] = { | |
374 | dprintf_style_gdb, | |
375 | dprintf_style_call, | |
376 | dprintf_style_agent, | |
377 | NULL | |
378 | }; | |
379 | static const char *dprintf_style = dprintf_style_gdb; | |
380 | ||
381 | /* The function to use for dynamic printf if the preferred style is to | |
382 | call into the inferior. The value is simply a string that is | |
383 | copied into the command, so it can be anything that GDB can | |
384 | evaluate to a callable address, not necessarily a function name. */ | |
385 | ||
e0700ba4 | 386 | static std::string dprintf_function = "printf"; |
d3ce09f5 SS |
387 | |
388 | /* The channel to use for dynamic printf if the preferred style is to | |
389 | call into the inferior; if a nonempty string, it will be passed to | |
390 | the call as the first argument, with the format string as the | |
391 | second. As with the dprintf function, this can be anything that | |
392 | GDB knows how to evaluate, so in addition to common choices like | |
393 | "stderr", this could be an app-specific expression like | |
394 | "mystreams[curlogger]". */ | |
395 | ||
e0700ba4 | 396 | static std::string dprintf_channel; |
d3ce09f5 SS |
397 | |
398 | /* True if dprintf commands should continue to operate even if GDB | |
399 | has disconnected. */ | |
491144b5 | 400 | static bool disconnected_dprintf = true; |
d3ce09f5 | 401 | |
5cea2a26 PA |
402 | struct command_line * |
403 | breakpoint_commands (struct breakpoint *b) | |
404 | { | |
d1b0a7bf | 405 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 406 | } |
3daf8fe5 | 407 | |
f3b1572e PA |
408 | /* Flag indicating that a command has proceeded the inferior past the |
409 | current breakpoint. */ | |
410 | ||
491144b5 | 411 | static bool breakpoint_proceeded; |
f3b1572e | 412 | |
956a9fb9 | 413 | const char * |
2cec12e5 AR |
414 | bpdisp_text (enum bpdisp disp) |
415 | { | |
4a64f543 MS |
416 | /* NOTE: the following values are a part of MI protocol and |
417 | represent values of 'disp' field returned when inferior stops at | |
418 | a breakpoint. */ | |
bc043ef3 | 419 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 420 | |
2cec12e5 AR |
421 | return bpdisps[(int) disp]; |
422 | } | |
c906108c | 423 | |
4a64f543 | 424 | /* Prototypes for exported functions. */ |
c906108c | 425 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 426 | if such is available. */ |
c906108c SS |
427 | static int can_use_hw_watchpoints; |
428 | ||
920d2a44 AC |
429 | static void |
430 | show_can_use_hw_watchpoints (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 willingness to use " | |
436 | "watchpoint hardware is %s.\n"), | |
437 | value); | |
920d2a44 AC |
438 | } |
439 | ||
fa8d40ab JJ |
440 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
441 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 442 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
443 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
444 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
445 | static void |
446 | show_pending_break_support (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 | _("Debugger's behavior regarding " | |
452 | "pending breakpoints is %s.\n"), | |
453 | value); | |
920d2a44 | 454 | } |
fa8d40ab | 455 | |
491144b5 | 456 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 457 | set with "break" but falling in read-only memory. |
491144b5 | 458 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 459 | use hardware breakpoints. */ |
491144b5 | 460 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
461 | static void |
462 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
463 | struct cmd_list_element *c, | |
464 | const char *value) | |
465 | { | |
6cb06a8c TT |
466 | gdb_printf (file, |
467 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
468 | value); | |
765dc015 VP |
469 | } |
470 | ||
a25a5a45 PA |
471 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
472 | stopped, and immediately inserts any new breakpoints as soon as | |
473 | they're created. If off (default), GDB keeps breakpoints off of | |
474 | the target as long as possible. That is, it delays inserting | |
475 | breakpoints until the next resume, and removes them again when the | |
476 | target fully stops. This is a bit safer in case GDB crashes while | |
477 | processing user input. */ | |
491144b5 | 478 | static bool always_inserted_mode = false; |
72d0e2c5 | 479 | |
33e5cbd6 | 480 | static void |
74960c60 | 481 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 482 | struct cmd_list_element *c, const char *value) |
74960c60 | 483 | { |
6cb06a8c TT |
484 | gdb_printf (file, _("Always inserted breakpoint mode is %s.\n"), |
485 | value); | |
74960c60 VP |
486 | } |
487 | ||
b57bacec PA |
488 | /* See breakpoint.h. */ |
489 | ||
33e5cbd6 | 490 | int |
a25a5a45 | 491 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 492 | { |
a25a5a45 PA |
493 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
494 | { | |
495 | /* If breakpoints are global, they should be inserted even if no | |
496 | thread under gdb's control is running, or even if there are | |
497 | no threads under GDB's control yet. */ | |
498 | return 1; | |
499 | } | |
5b6d1e4f | 500 | else |
a25a5a45 | 501 | { |
a25a5a45 PA |
502 | if (always_inserted_mode) |
503 | { | |
504 | /* The user wants breakpoints inserted even if all threads | |
505 | are stopped. */ | |
506 | return 1; | |
507 | } | |
508 | ||
5b6d1e4f PA |
509 | for (inferior *inf : all_inferiors ()) |
510 | if (inf->has_execution () | |
511 | && threads_are_executing (inf->process_target ())) | |
512 | return 1; | |
372316f1 PA |
513 | |
514 | /* Don't remove breakpoints yet if, even though all threads are | |
515 | stopped, we still have events to process. */ | |
08036331 | 516 | for (thread_info *tp : all_non_exited_threads ()) |
1edb66d8 | 517 | if (tp->resumed () && tp->has_pending_waitstatus ()) |
372316f1 | 518 | return 1; |
a25a5a45 PA |
519 | } |
520 | return 0; | |
33e5cbd6 | 521 | } |
765dc015 | 522 | |
b775012e LM |
523 | static const char condition_evaluation_both[] = "host or target"; |
524 | ||
525 | /* Modes for breakpoint condition evaluation. */ | |
526 | static const char condition_evaluation_auto[] = "auto"; | |
527 | static const char condition_evaluation_host[] = "host"; | |
528 | static const char condition_evaluation_target[] = "target"; | |
529 | static const char *const condition_evaluation_enums[] = { | |
530 | condition_evaluation_auto, | |
531 | condition_evaluation_host, | |
532 | condition_evaluation_target, | |
533 | NULL | |
534 | }; | |
535 | ||
536 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
537 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
538 | ||
539 | /* Global that we use to display information to the user (gets its value from | |
540 | condition_evaluation_mode_1. */ | |
541 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
542 | ||
543 | /* Translate a condition evaluation mode MODE into either "host" | |
544 | or "target". This is used mostly to translate from "auto" to the | |
545 | real setting that is being used. It returns the translated | |
546 | evaluation mode. */ | |
547 | ||
548 | static const char * | |
549 | translate_condition_evaluation_mode (const char *mode) | |
550 | { | |
551 | if (mode == condition_evaluation_auto) | |
552 | { | |
553 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
554 | return condition_evaluation_target; | |
555 | else | |
556 | return condition_evaluation_host; | |
557 | } | |
558 | else | |
559 | return mode; | |
560 | } | |
561 | ||
562 | /* Discovers what condition_evaluation_auto translates to. */ | |
563 | ||
564 | static const char * | |
565 | breakpoint_condition_evaluation_mode (void) | |
566 | { | |
567 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
568 | } | |
569 | ||
570 | /* Return true if GDB should evaluate breakpoint conditions or false | |
571 | otherwise. */ | |
572 | ||
573 | static int | |
574 | gdb_evaluates_breakpoint_condition_p (void) | |
575 | { | |
576 | const char *mode = breakpoint_condition_evaluation_mode (); | |
577 | ||
578 | return (mode == condition_evaluation_host); | |
579 | } | |
580 | ||
c906108c SS |
581 | /* Are we executing breakpoint commands? */ |
582 | static int executing_breakpoint_commands; | |
583 | ||
c02f5703 MS |
584 | /* Are overlay event breakpoints enabled? */ |
585 | static int overlay_events_enabled; | |
586 | ||
e09342b5 | 587 | /* See description in breakpoint.h. */ |
491144b5 | 588 | bool target_exact_watchpoints = false; |
e09342b5 | 589 | |
c906108c | 590 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 591 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 592 | current breakpoint. */ |
c906108c | 593 | |
5c44784c JM |
594 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
595 | for (B = breakpoint_chain; \ | |
596 | B ? (TMP=B->next, 1): 0; \ | |
597 | B = TMP) | |
c906108c | 598 | |
7cc221ef | 599 | /* Chains of all breakpoints defined. */ |
c906108c | 600 | |
81e6b8eb | 601 | static struct breakpoint *breakpoint_chain; |
c906108c | 602 | |
240edef6 | 603 | /* See breakpoint.h. */ |
43892fdf | 604 | |
240edef6 | 605 | breakpoint_range |
43892fdf SM |
606 | all_breakpoints () |
607 | { | |
608 | return breakpoint_range (breakpoint_chain); | |
609 | } | |
610 | ||
240edef6 | 611 | /* See breakpoint.h. */ |
1428b37a | 612 | |
240edef6 | 613 | breakpoint_safe_range |
1428b37a SM |
614 | all_breakpoints_safe () |
615 | { | |
616 | return breakpoint_safe_range (all_breakpoints ()); | |
617 | } | |
618 | ||
f6d17b2b SM |
619 | /* See breakpoint.h. */ |
620 | ||
621 | tracepoint_range | |
622 | all_tracepoints () | |
623 | { | |
624 | return tracepoint_range (breakpoint_chain); | |
625 | } | |
626 | ||
39ef2f62 | 627 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 628 | |
5d51cd5d | 629 | static std::vector<bp_location *> bp_locations; |
876fa593 | 630 | |
055c879f SM |
631 | /* See breakpoint.h. */ |
632 | ||
633 | const std::vector<bp_location *> & | |
48d7020b SM |
634 | all_bp_locations () |
635 | { | |
636 | return bp_locations; | |
637 | } | |
638 | ||
e0d9a270 SM |
639 | /* Range to iterate over breakpoint locations at a given address. */ |
640 | ||
641 | struct bp_locations_at_addr_range | |
642 | { | |
643 | using iterator = std::vector<bp_location *>::iterator; | |
644 | ||
645 | bp_locations_at_addr_range (CORE_ADDR addr) | |
646 | { | |
647 | struct compare | |
648 | { | |
649 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
650 | { return loc->address < addr_; } | |
651 | ||
652 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
653 | { return addr_ < loc->address; } | |
654 | }; | |
655 | ||
656 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
657 | addr, compare ()); | |
658 | ||
659 | m_begin = it_pair.first; | |
660 | m_end = it_pair.second; | |
661 | } | |
662 | ||
663 | iterator begin () const | |
664 | { return m_begin; } | |
665 | ||
666 | iterator end () const | |
667 | { return m_end; } | |
668 | ||
669 | private: | |
670 | iterator m_begin; | |
671 | iterator m_end; | |
672 | }; | |
673 | ||
674 | /* Return a range to iterate over all breakpoint locations exactly at address | |
675 | ADDR. | |
676 | ||
677 | If it's needed to iterate multiple times on the same range, it's possible | |
678 | to save the range in a local variable and use it multiple times: | |
679 | ||
680 | auto range = all_bp_locations_at_addr (addr); | |
681 | ||
682 | for (bp_location *loc : range) | |
683 | // use loc | |
684 | ||
685 | for (bp_location *loc : range) | |
686 | // use loc | |
687 | ||
688 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
689 | the range's boundaries. Just remember not to change the bp_locations vector | |
690 | in the mean time, as it could make the range's iterators stale. */ | |
691 | ||
692 | static bp_locations_at_addr_range | |
693 | all_bp_locations_at_addr (CORE_ADDR addr) | |
694 | { | |
695 | return bp_locations_at_addr_range (addr); | |
696 | } | |
697 | ||
4a64f543 | 698 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 699 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 700 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 701 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 702 | an address you need to read. */ |
876fa593 | 703 | |
f5336ca5 | 704 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 705 | |
4a64f543 MS |
706 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
707 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
708 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
709 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 710 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 711 | |
f5336ca5 | 712 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 713 | |
4a64f543 | 714 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
715 | from the bp_locations array, but for which a hit may still be |
716 | reported by a target. */ | |
1123588c | 717 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 718 | |
c906108c SS |
719 | /* Number of last breakpoint made. */ |
720 | ||
95a42b64 TT |
721 | static int breakpoint_count; |
722 | ||
86b17b60 PA |
723 | /* The value of `breakpoint_count' before the last command that |
724 | created breakpoints. If the last (break-like) command created more | |
725 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
726 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
727 | static int prev_breakpoint_count; | |
c906108c | 728 | |
1042e4c0 SS |
729 | /* Number of last tracepoint made. */ |
730 | ||
95a42b64 | 731 | static int tracepoint_count; |
1042e4c0 | 732 | |
6149aea9 PA |
733 | static struct cmd_list_element *breakpoint_set_cmdlist; |
734 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 735 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 736 | |
468d015d JJ |
737 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
738 | static int | |
739 | breakpoint_enabled (struct breakpoint *b) | |
740 | { | |
0d381245 | 741 | return (b->enable_state == bp_enabled); |
468d015d JJ |
742 | } |
743 | ||
c906108c SS |
744 | /* Set breakpoint count to NUM. */ |
745 | ||
95a42b64 | 746 | static void |
fba45db2 | 747 | set_breakpoint_count (int num) |
c906108c | 748 | { |
86b17b60 | 749 | prev_breakpoint_count = breakpoint_count; |
c906108c | 750 | breakpoint_count = num; |
4fa62494 | 751 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
752 | } |
753 | ||
86b17b60 PA |
754 | /* Used by `start_rbreak_breakpoints' below, to record the current |
755 | breakpoint count before "rbreak" creates any breakpoint. */ | |
756 | static int rbreak_start_breakpoint_count; | |
757 | ||
95a42b64 TT |
758 | /* Called at the start an "rbreak" command to record the first |
759 | breakpoint made. */ | |
86b17b60 | 760 | |
c80049d3 | 761 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 762 | { |
86b17b60 | 763 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
764 | } |
765 | ||
766 | /* Called at the end of an "rbreak" command to record the last | |
767 | breakpoint made. */ | |
86b17b60 | 768 | |
c80049d3 | 769 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 770 | { |
86b17b60 | 771 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
772 | } |
773 | ||
4a64f543 | 774 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
775 | |
776 | void | |
fba45db2 | 777 | clear_breakpoint_hit_counts (void) |
c906108c | 778 | { |
43892fdf | 779 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
780 | b->hit_count = 0; |
781 | } | |
782 | ||
c906108c | 783 | \f |
48cb2d85 VP |
784 | /* Return the breakpoint with the specified number, or NULL |
785 | if the number does not refer to an existing breakpoint. */ | |
786 | ||
787 | struct breakpoint * | |
788 | get_breakpoint (int num) | |
789 | { | |
43892fdf | 790 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
791 | if (b->number == num) |
792 | return b; | |
793 | ||
43892fdf | 794 | return nullptr; |
48cb2d85 | 795 | } |
5c44784c | 796 | |
c906108c | 797 | \f |
adc36818 | 798 | |
b775012e LM |
799 | /* Mark locations as "conditions have changed" in case the target supports |
800 | evaluating conditions on its side. */ | |
801 | ||
802 | static void | |
803 | mark_breakpoint_modified (struct breakpoint *b) | |
804 | { | |
b775012e LM |
805 | /* This is only meaningful if the target is |
806 | evaluating conditions and if the user has | |
807 | opted for condition evaluation on the target's | |
808 | side. */ | |
809 | if (gdb_evaluates_breakpoint_condition_p () | |
810 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
811 | return; | |
812 | ||
813 | if (!is_breakpoint (b)) | |
814 | return; | |
815 | ||
40cb8ca5 | 816 | for (bp_location *loc : b->locations ()) |
b775012e LM |
817 | loc->condition_changed = condition_modified; |
818 | } | |
819 | ||
820 | /* Mark location as "conditions have changed" in case the target supports | |
821 | evaluating conditions on its side. */ | |
822 | ||
823 | static void | |
824 | mark_breakpoint_location_modified (struct bp_location *loc) | |
825 | { | |
826 | /* This is only meaningful if the target is | |
827 | evaluating conditions and if the user has | |
828 | opted for condition evaluation on the target's | |
829 | side. */ | |
830 | if (gdb_evaluates_breakpoint_condition_p () | |
831 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
832 | ||
833 | return; | |
834 | ||
835 | if (!is_breakpoint (loc->owner)) | |
836 | return; | |
837 | ||
838 | loc->condition_changed = condition_modified; | |
839 | } | |
840 | ||
841 | /* Sets the condition-evaluation mode using the static global | |
842 | condition_evaluation_mode. */ | |
843 | ||
844 | static void | |
eb4c3f4a | 845 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
846 | struct cmd_list_element *c) |
847 | { | |
b775012e LM |
848 | const char *old_mode, *new_mode; |
849 | ||
850 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
851 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
852 | { | |
853 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
854 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
855 | "Using host evaluation mode instead.")); | |
856 | return; | |
857 | } | |
858 | ||
859 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
860 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
861 | ||
abf1152a JK |
862 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
863 | settings was "auto". */ | |
864 | condition_evaluation_mode = condition_evaluation_mode_1; | |
865 | ||
b775012e LM |
866 | /* Only update the mode if the user picked a different one. */ |
867 | if (new_mode != old_mode) | |
868 | { | |
b775012e LM |
869 | /* If the user switched to a different evaluation mode, we |
870 | need to synch the changes with the target as follows: | |
871 | ||
872 | "host" -> "target": Send all (valid) conditions to the target. | |
873 | "target" -> "host": Remove all the conditions from the target. | |
874 | */ | |
875 | ||
b775012e LM |
876 | if (new_mode == condition_evaluation_target) |
877 | { | |
878 | /* Mark everything modified and synch conditions with the | |
879 | target. */ | |
48d7020b | 880 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 881 | mark_breakpoint_location_modified (loc); |
24b21115 | 882 | } |
b775012e LM |
883 | else |
884 | { | |
885 | /* Manually mark non-duplicate locations to synch conditions | |
886 | with the target. We do this to remove all the conditions the | |
887 | target knows about. */ | |
48d7020b | 888 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
889 | if (is_breakpoint (loc->owner) && loc->inserted) |
890 | loc->needs_update = 1; | |
891 | } | |
892 | ||
893 | /* Do the update. */ | |
44702360 | 894 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
895 | } |
896 | ||
897 | return; | |
898 | } | |
899 | ||
900 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
901 | what "auto" is translating to. */ | |
902 | ||
903 | static void | |
904 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
905 | struct cmd_list_element *c, const char *value) | |
906 | { | |
907 | if (condition_evaluation_mode == condition_evaluation_auto) | |
6cb06a8c TT |
908 | gdb_printf (file, |
909 | _("Breakpoint condition evaluation " | |
910 | "mode is %s (currently %s).\n"), | |
911 | value, | |
912 | breakpoint_condition_evaluation_mode ()); | |
b775012e | 913 | else |
6cb06a8c TT |
914 | gdb_printf (file, _("Breakpoint condition evaluation mode is %s.\n"), |
915 | value); | |
b775012e LM |
916 | } |
917 | ||
b5fa468f TBA |
918 | /* Parse COND_STRING in the context of LOC and set as the condition |
919 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
920 | the number of LOC within its owner. In case of parsing error, mark | |
921 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
922 | ||
923 | static void | |
924 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
925 | int bp_num, int loc_num) | |
926 | { | |
927 | bool has_junk = false; | |
928 | try | |
929 | { | |
930 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
931 | block_for_pc (loc->address), 0); | |
932 | if (*cond_string != 0) | |
933 | has_junk = true; | |
934 | else | |
935 | { | |
936 | loc->cond = std::move (new_exp); | |
937 | if (loc->disabled_by_cond && loc->enabled) | |
6cb06a8c TT |
938 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
939 | "location %d, enabling.\n"), | |
940 | bp_num, loc_num); | |
b5fa468f TBA |
941 | |
942 | loc->disabled_by_cond = false; | |
943 | } | |
944 | } | |
945 | catch (const gdb_exception_error &e) | |
946 | { | |
947 | if (loc->enabled) | |
948 | { | |
949 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
950 | BP_NUM is 0 if the breakpoint is being defined for the first | |
951 | time using the "break ... if ..." command, and non-zero if | |
952 | already defined. */ | |
953 | if (bp_num != 0) | |
954 | warning (_("failed to validate condition at location %d.%d, " | |
955 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
956 | else | |
957 | warning (_("failed to validate condition at location %d, " | |
958 | "disabling:\n %s"), loc_num, e.what ()); | |
959 | } | |
960 | ||
961 | loc->disabled_by_cond = true; | |
962 | } | |
963 | ||
964 | if (has_junk) | |
965 | error (_("Garbage '%s' follows condition"), cond_string); | |
966 | } | |
967 | ||
adc36818 | 968 | void |
7a26bd4d | 969 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 970 | int from_tty, bool force) |
adc36818 | 971 | { |
4c55e970 | 972 | if (*exp == 0) |
3a5c3e22 | 973 | { |
6f781ee3 | 974 | b->cond_string.reset (); |
3a5c3e22 | 975 | |
4c55e970 | 976 | if (is_watchpoint (b)) |
78319c15 | 977 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
978 | else |
979 | { | |
b5fa468f | 980 | int loc_num = 1; |
40cb8ca5 | 981 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
982 | { |
983 | loc->cond.reset (); | |
b5fa468f | 984 | if (loc->disabled_by_cond && loc->enabled) |
6cb06a8c TT |
985 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
986 | "location %d, enabling.\n"), | |
987 | b->number, loc_num); | |
b5fa468f TBA |
988 | loc->disabled_by_cond = false; |
989 | loc_num++; | |
4c55e970 TBA |
990 | |
991 | /* No need to free the condition agent expression | |
992 | bytecode (if we have one). We will handle this | |
993 | when we go through update_global_location_list. */ | |
994 | } | |
995 | } | |
1e620590 | 996 | |
adc36818 | 997 | if (from_tty) |
6cb06a8c | 998 | gdb_printf (_("Breakpoint %d now unconditional.\n"), b->number); |
adc36818 PM |
999 | } |
1000 | else | |
1001 | { | |
adc36818 PM |
1002 | if (is_watchpoint (b)) |
1003 | { | |
699bd4cf | 1004 | innermost_block_tracker tracker; |
78319c15 | 1005 | const char *arg = exp; |
4c55e970 | 1006 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 1007 | if (*arg != 0) |
adc36818 | 1008 | error (_("Junk at end of expression")); |
78319c15 | 1009 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 1010 | w->cond_exp = std::move (new_exp); |
699bd4cf | 1011 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
1012 | } |
1013 | else | |
1014 | { | |
4c55e970 TBA |
1015 | /* Parse and set condition expressions. We make two passes. |
1016 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
1017 | is valid in at least one location. If so, the condition |
1018 | would be accepted. So we go ahead and set the locations' | |
1019 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
1020 | the error and the condition string will be rejected. |
1021 | This two-pass approach is taken to avoid setting the | |
1022 | state of locations in case of a reject. */ | |
40cb8ca5 | 1023 | for (bp_location *loc : b->locations ()) |
4c55e970 | 1024 | { |
b5fa468f TBA |
1025 | try |
1026 | { | |
1027 | const char *arg = exp; | |
1028 | parse_exp_1 (&arg, loc->address, | |
1029 | block_for_pc (loc->address), 0); | |
1030 | if (*arg != 0) | |
1031 | error (_("Junk at end of expression")); | |
1032 | break; | |
1033 | } | |
1034 | catch (const gdb_exception_error &e) | |
1035 | { | |
1036 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
1037 | be the last loc, abandon (if not forced) or continue |
1038 | (if forced). */ | |
1039 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
1040 | throw; |
1041 | } | |
4c55e970 TBA |
1042 | } |
1043 | ||
b5fa468f | 1044 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 1045 | int loc_num = 1; |
40cb8ca5 SM |
1046 | for (bp_location *loc : b->locations ()) |
1047 | { | |
1048 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
1049 | loc_num++; | |
1050 | } | |
adc36818 | 1051 | } |
1e620590 TBA |
1052 | |
1053 | /* We know that the new condition parsed successfully. The | |
1054 | condition string of the breakpoint can be safely updated. */ | |
6f781ee3 | 1055 | b->cond_string = make_unique_xstrdup (exp); |
1e620590 | 1056 | b->condition_not_parsed = 0; |
adc36818 | 1057 | } |
b775012e LM |
1058 | mark_breakpoint_modified (b); |
1059 | ||
76727919 | 1060 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
1061 | } |
1062 | ||
79aabb73 TBA |
1063 | /* See breakpoint.h. */ |
1064 | ||
1065 | void | |
1066 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
1067 | bool force) | |
1068 | { | |
43892fdf | 1069 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
1070 | if (b->number == bpnum) |
1071 | { | |
1072 | /* Check if this breakpoint has a "stop" method implemented in an | |
1073 | extension language. This method and conditions entered into GDB | |
1074 | from the CLI are mutually exclusive. */ | |
1075 | const struct extension_language_defn *extlang | |
1076 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1077 | ||
1078 | if (extlang != NULL) | |
1079 | { | |
1080 | error (_("Only one stop condition allowed. There is currently" | |
1081 | " a %s stop condition defined for this breakpoint."), | |
1082 | ext_lang_capitalized_name (extlang)); | |
1083 | } | |
1084 | set_breakpoint_condition (b, exp, from_tty, force); | |
1085 | ||
1086 | if (is_breakpoint (b)) | |
1087 | update_global_location_list (UGLL_MAY_INSERT); | |
1088 | ||
1089 | return; | |
1090 | } | |
1091 | ||
1092 | error (_("No breakpoint number %d."), bpnum); | |
1093 | } | |
1094 | ||
b1d4d8d1 TBA |
1095 | /* The options for the "condition" command. */ |
1096 | ||
1097 | struct condition_command_opts | |
1098 | { | |
1099 | /* For "-force". */ | |
1100 | bool force_condition = false; | |
1101 | }; | |
1102 | ||
1103 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1104 | ||
1105 | gdb::option::flag_option_def<condition_command_opts> { | |
1106 | "force", | |
1107 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1108 | N_("Set the condition even if it is invalid for all current locations."), | |
1109 | }, | |
1110 | ||
1111 | }; | |
1112 | ||
1113 | /* Create an option_def_group for the "condition" options, with | |
1114 | CC_OPTS as context. */ | |
1115 | ||
1116 | static inline gdb::option::option_def_group | |
1117 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1118 | { | |
1119 | return {{condition_command_option_defs}, cc_opts}; | |
1120 | } | |
1121 | ||
d55637df TT |
1122 | /* Completion for the "condition" command. */ |
1123 | ||
eb3ff9a5 | 1124 | static void |
6f937416 | 1125 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1126 | completion_tracker &tracker, |
b1d4d8d1 | 1127 | const char *text, const char * /*word*/) |
d55637df | 1128 | { |
b1d4d8d1 TBA |
1129 | bool has_no_arguments = (*text == '\0'); |
1130 | condition_command_opts cc_opts; | |
1131 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1132 | if (gdb::option::complete_options | |
1133 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1134 | return; | |
d55637df | 1135 | |
f1735a53 | 1136 | text = skip_spaces (text); |
b1d4d8d1 | 1137 | const char *space = skip_to_space (text); |
d55637df TT |
1138 | if (*space == '\0') |
1139 | { | |
1140 | int len; | |
d55637df TT |
1141 | |
1142 | if (text[0] == '$') | |
1143 | { | |
b1d4d8d1 | 1144 | tracker.advance_custom_word_point_by (1); |
d55637df | 1145 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1146 | if (!isdigit (text[1])) |
1147 | complete_internalvar (tracker, &text[1]); | |
1148 | return; | |
d55637df TT |
1149 | } |
1150 | ||
b1d4d8d1 TBA |
1151 | /* Suggest the "-force" flag if no arguments are given. If |
1152 | arguments were passed, they either already include the flag, | |
1153 | or we are beyond the point of suggesting it because it's | |
1154 | positionally the first argument. */ | |
1155 | if (has_no_arguments) | |
1156 | gdb::option::complete_on_all_options (tracker, group); | |
1157 | ||
d55637df TT |
1158 | /* We're completing the breakpoint number. */ |
1159 | len = strlen (text); | |
1160 | ||
43892fdf | 1161 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1162 | { |
1163 | char number[50]; | |
1164 | ||
1165 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1166 | ||
1167 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1168 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1169 | } |
d55637df | 1170 | |
eb3ff9a5 | 1171 | return; |
d55637df TT |
1172 | } |
1173 | ||
b1d4d8d1 TBA |
1174 | /* We're completing the expression part. Skip the breakpoint num. */ |
1175 | const char *exp_start = skip_spaces (space); | |
1176 | tracker.advance_custom_word_point_by (exp_start - text); | |
1177 | text = exp_start; | |
1178 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1179 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1180 | } |
1181 | ||
c906108c SS |
1182 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1183 | ||
1184 | static void | |
0b39b52e | 1185 | condition_command (const char *arg, int from_tty) |
c906108c | 1186 | { |
0b39b52e | 1187 | const char *p; |
52f0bd74 | 1188 | int bnum; |
c906108c SS |
1189 | |
1190 | if (arg == 0) | |
e2e0b3e5 | 1191 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1192 | |
1193 | p = arg; | |
733d554a TBA |
1194 | |
1195 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1196 | condition_command_opts cc_opts; |
1197 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1198 | gdb::option::process_options | |
1199 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1200 | |
c906108c | 1201 | bnum = get_number (&p); |
5c44784c | 1202 | if (bnum == 0) |
8a3fe4f8 | 1203 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1204 | |
79aabb73 | 1205 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1206 | } |
1207 | ||
a7bdde9e VP |
1208 | /* Check that COMMAND do not contain commands that are suitable |
1209 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1210 | Throw if any such commands is found. */ |
1211 | ||
a7bdde9e VP |
1212 | static void |
1213 | check_no_tracepoint_commands (struct command_line *commands) | |
1214 | { | |
1215 | struct command_line *c; | |
cc59ec59 | 1216 | |
a7bdde9e VP |
1217 | for (c = commands; c; c = c->next) |
1218 | { | |
a7bdde9e | 1219 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1220 | error (_("The 'while-stepping' command can " |
1221 | "only be used for tracepoints")); | |
a7bdde9e | 1222 | |
12973681 TT |
1223 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1224 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1225 | |
1226 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1227 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1228 | command directly. */ |
1229 | if (strstr (c->line, "collect ") == c->line) | |
1230 | error (_("The 'collect' command can only be used for tracepoints")); | |
1231 | ||
51661e93 VP |
1232 | if (strstr (c->line, "teval ") == c->line) |
1233 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1234 | } |
1235 | } | |
1236 | ||
098f1272 | 1237 | struct longjmp_breakpoint : public momentary_breakpoint |
3b0871f4 | 1238 | { |
73063f51 TT |
1239 | using momentary_breakpoint::momentary_breakpoint; |
1240 | ||
c1fc2657 | 1241 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1242 | }; |
1243 | ||
d77f58be SS |
1244 | /* Encapsulate tests for different types of tracepoints. */ |
1245 | ||
3b0871f4 SM |
1246 | static bool |
1247 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1248 | { |
1249 | return (type == bp_tracepoint | |
1250 | || type == bp_fast_tracepoint | |
7b572efb TT |
1251 | || type == bp_static_tracepoint |
1252 | || type == bp_static_marker_tracepoint); | |
d9b3f62e PA |
1253 | } |
1254 | ||
f2478a7e SM |
1255 | /* See breakpoint.h. */ |
1256 | ||
1257 | bool | |
d77f58be | 1258 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1259 | { |
d9b3f62e | 1260 | return is_tracepoint_type (b->type); |
a7bdde9e | 1261 | } |
d9b3f62e | 1262 | |
a5e364af SM |
1263 | /* Factory function to create an appropriate instance of breakpoint given |
1264 | TYPE. */ | |
1265 | ||
3b003a61 | 1266 | template<typename... Arg> |
ff733ec2 | 1267 | static std::unique_ptr<base_breakpoint> |
3b003a61 PA |
1268 | new_breakpoint_from_type (struct gdbarch *gdbarch, bptype type, |
1269 | Arg&&... args) | |
a5e364af | 1270 | { |
ff733ec2 | 1271 | base_breakpoint *b; |
a5e364af | 1272 | |
098f1272 TT |
1273 | switch (type) |
1274 | { | |
1275 | case bp_breakpoint: | |
1276 | case bp_hardware_breakpoint: | |
3b003a61 PA |
1277 | b = new ordinary_breakpoint (gdbarch, type, |
1278 | std::forward<Arg> (args)...); | |
098f1272 TT |
1279 | break; |
1280 | ||
1281 | case bp_fast_tracepoint: | |
1282 | case bp_static_tracepoint: | |
1283 | case bp_tracepoint: | |
3b003a61 PA |
1284 | b = new tracepoint (gdbarch, type, |
1285 | std::forward<Arg> (args)...); | |
098f1272 TT |
1286 | break; |
1287 | ||
6d7a8c56 | 1288 | case bp_static_marker_tracepoint: |
3b003a61 PA |
1289 | b = new static_marker_tracepoint (gdbarch, type, |
1290 | std::forward<Arg> (args)...); | |
6d7a8c56 TT |
1291 | break; |
1292 | ||
098f1272 | 1293 | case bp_dprintf: |
3b003a61 PA |
1294 | b = new dprintf_breakpoint (gdbarch, type, |
1295 | std::forward<Arg> (args)...); | |
098f1272 TT |
1296 | break; |
1297 | ||
098f1272 TT |
1298 | default: |
1299 | gdb_assert_not_reached ("invalid type"); | |
1300 | } | |
a5e364af | 1301 | |
ff733ec2 | 1302 | return std::unique_ptr<base_breakpoint> (b); |
a5e364af SM |
1303 | } |
1304 | ||
e5dd4106 | 1305 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1306 | breakpoint. This function will throw an exception if a problem is |
1307 | found. */ | |
48cb2d85 | 1308 | |
95a42b64 TT |
1309 | static void |
1310 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1311 | struct command_line *commands) | |
48cb2d85 | 1312 | { |
d77f58be | 1313 | if (is_tracepoint (b)) |
a7bdde9e | 1314 | { |
c9a6ce02 | 1315 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1316 | struct command_line *c; |
1317 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1318 | |
1319 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1320 | might have included a while-stepping action, while the new |
1321 | ones might not. */ | |
c9a6ce02 PA |
1322 | t->step_count = 0; |
1323 | ||
1324 | /* We need to verify that each top-level element of commands is | |
1325 | valid for tracepoints, that there's at most one | |
1326 | while-stepping element, and that the while-stepping's body | |
1327 | has valid tracing commands excluding nested while-stepping. | |
1328 | We also need to validate the tracepoint action line in the | |
1329 | context of the tracepoint --- validate_actionline actually | |
1330 | has side effects, like setting the tracepoint's | |
1331 | while-stepping STEP_COUNT, in addition to checking if the | |
1332 | collect/teval actions parse and make sense in the | |
1333 | tracepoint's context. */ | |
a7bdde9e VP |
1334 | for (c = commands; c; c = c->next) |
1335 | { | |
a7bdde9e VP |
1336 | if (c->control_type == while_stepping_control) |
1337 | { | |
1338 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1339 | error (_("The 'while-stepping' command " |
1340 | "cannot be used for fast tracepoint")); | |
7b572efb TT |
1341 | else if (b->type == bp_static_tracepoint |
1342 | || b->type == bp_static_marker_tracepoint) | |
3e43a32a MS |
1343 | error (_("The 'while-stepping' command " |
1344 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1345 | |
1346 | if (while_stepping) | |
3e43a32a MS |
1347 | error (_("The 'while-stepping' command " |
1348 | "can be used only once")); | |
a7bdde9e VP |
1349 | else |
1350 | while_stepping = c; | |
1351 | } | |
c9a6ce02 PA |
1352 | |
1353 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1354 | } |
1355 | if (while_stepping) | |
1356 | { | |
1357 | struct command_line *c2; | |
1358 | ||
12973681 TT |
1359 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1360 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1361 | for (; c2; c2 = c2->next) |
1362 | { | |
a7bdde9e VP |
1363 | if (c2->control_type == while_stepping_control) |
1364 | error (_("The 'while-stepping' command cannot be nested")); | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | else | |
1369 | { | |
1370 | check_no_tracepoint_commands (commands); | |
1371 | } | |
95a42b64 TT |
1372 | } |
1373 | ||
0fb4aa4b PA |
1374 | /* Return a vector of all the static tracepoints set at ADDR. The |
1375 | caller is responsible for releasing the vector. */ | |
1376 | ||
f51e0e20 | 1377 | std::vector<breakpoint *> |
0fb4aa4b PA |
1378 | static_tracepoints_here (CORE_ADDR addr) |
1379 | { | |
f51e0e20 | 1380 | std::vector<breakpoint *> found; |
0fb4aa4b | 1381 | |
43892fdf | 1382 | for (breakpoint *b : all_breakpoints ()) |
7b572efb TT |
1383 | if (b->type == bp_static_tracepoint |
1384 | || b->type == bp_static_marker_tracepoint) | |
0fb4aa4b | 1385 | { |
40cb8ca5 | 1386 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1387 | if (loc->address == addr) |
f51e0e20 | 1388 | found.push_back (b); |
0fb4aa4b PA |
1389 | } |
1390 | ||
1391 | return found; | |
1392 | } | |
1393 | ||
95a42b64 | 1394 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1395 | validate that only allowed commands are included. */ |
95a42b64 TT |
1396 | |
1397 | void | |
4a64f543 | 1398 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1399 | counted_command_line &&commands) |
95a42b64 | 1400 | { |
93921405 | 1401 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1402 | |
d1b0a7bf | 1403 | b->commands = std::move (commands); |
76727919 | 1404 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1405 | } |
1406 | ||
45a43567 TT |
1407 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1408 | is not the same as the "silent" that may appear in the breakpoint's | |
1409 | commands. */ | |
1410 | ||
1411 | void | |
1412 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1413 | { | |
1414 | int old_silent = b->silent; | |
1415 | ||
1416 | b->silent = silent; | |
1417 | if (old_silent != silent) | |
76727919 | 1418 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1419 | } |
1420 | ||
1421 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1422 | breakpoint work for any thread. */ | |
1423 | ||
1424 | void | |
1425 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1426 | { | |
1427 | int old_thread = b->thread; | |
1428 | ||
1429 | b->thread = thread; | |
1430 | if (old_thread != thread) | |
76727919 | 1431 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1432 | } |
1433 | ||
1434 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1435 | breakpoint work for any task. */ | |
1436 | ||
1437 | void | |
1438 | breakpoint_set_task (struct breakpoint *b, int task) | |
1439 | { | |
1440 | int old_task = b->task; | |
1441 | ||
1442 | b->task = task; | |
1443 | if (old_task != task) | |
76727919 | 1444 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1445 | } |
1446 | ||
95a42b64 | 1447 | static void |
896b6bda | 1448 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1449 | struct command_line *control) |
95a42b64 | 1450 | { |
d1b0a7bf | 1451 | counted_command_line cmd; |
999700cd PW |
1452 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1453 | NULL after the call to read_command_lines if the user provides an empty | |
1454 | list of command by just typing "end". */ | |
1455 | bool cmd_read = false; | |
95a42b64 | 1456 | |
896b6bda PA |
1457 | std::string new_arg; |
1458 | ||
95a42b64 TT |
1459 | if (arg == NULL || !*arg) |
1460 | { | |
da1df1db | 1461 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1462 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1463 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1464 | breakpoint_count); | |
95a42b64 | 1465 | else if (breakpoint_count > 0) |
896b6bda | 1466 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1467 | } |
da1df1db TBA |
1468 | else |
1469 | { | |
1470 | /* Create a copy of ARG. This is needed because the "commands" | |
1471 | command may be coming from a script. In that case, the read | |
1472 | line buffer is going to be overwritten in the lambda of | |
1473 | 'map_breakpoint_numbers' below when reading the next line | |
1474 | before we are are done parsing the breakpoint numbers. */ | |
1475 | new_arg = arg; | |
1476 | } | |
1477 | arg = new_arg.c_str (); | |
48649e1b TT |
1478 | |
1479 | map_breakpoint_numbers | |
1480 | (arg, [&] (breakpoint *b) | |
1481 | { | |
999700cd | 1482 | if (!cmd_read) |
48649e1b | 1483 | { |
999700cd | 1484 | gdb_assert (cmd == NULL); |
48649e1b | 1485 | if (control != NULL) |
12973681 | 1486 | cmd = control->body_list_0; |
48649e1b TT |
1487 | else |
1488 | { | |
81b1e71c TT |
1489 | std::string str |
1490 | = string_printf (_("Type commands for breakpoint(s) " | |
1491 | "%s, one per line."), | |
1492 | arg); | |
48649e1b | 1493 | |
60b3cef2 TT |
1494 | auto do_validate = [=] (const char *line) |
1495 | { | |
1496 | validate_actionline (line, b); | |
1497 | }; | |
1498 | gdb::function_view<void (const char *)> validator; | |
1499 | if (is_tracepoint (b)) | |
1500 | validator = do_validate; | |
1501 | ||
1502 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1503 | } |
999700cd | 1504 | cmd_read = true; |
48649e1b TT |
1505 | } |
1506 | ||
1507 | /* If a breakpoint was on the list more than once, we don't need to | |
1508 | do anything. */ | |
1509 | if (b->commands != cmd) | |
1510 | { | |
d1b0a7bf | 1511 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1512 | b->commands = cmd; |
76727919 | 1513 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1514 | } |
1515 | }); | |
95a42b64 TT |
1516 | } |
1517 | ||
1518 | static void | |
0b39b52e | 1519 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1520 | { |
1521 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1522 | } |
40c03ae8 EZ |
1523 | |
1524 | /* Like commands_command, but instead of reading the commands from | |
1525 | input stream, takes them from an already parsed command structure. | |
1526 | ||
1527 | This is used by cli-script.c to DTRT with breakpoint commands | |
1528 | that are part of if and while bodies. */ | |
1529 | enum command_control_type | |
896b6bda | 1530 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1531 | { |
95a42b64 TT |
1532 | commands_command_1 (arg, 0, cmd); |
1533 | return simple_control; | |
40c03ae8 | 1534 | } |
876fa593 JK |
1535 | |
1536 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1537 | ||
1538 | static int | |
1539 | bp_location_has_shadow (struct bp_location *bl) | |
1540 | { | |
1541 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1542 | return 0; | |
1543 | if (!bl->inserted) | |
1544 | return 0; | |
1545 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1546 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1547 | return 0; |
1548 | return 1; | |
1549 | } | |
1550 | ||
9d497a19 PA |
1551 | /* Update BUF, which is LEN bytes read from the target address |
1552 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1553 | contents. | |
1554 | ||
1555 | If READBUF is not NULL, this buffer must not overlap with the of | |
1556 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1557 | failed assertion internal error will be raised. */ | |
1558 | ||
1559 | static void | |
1560 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1561 | const gdb_byte *writebuf_org, | |
1562 | ULONGEST memaddr, LONGEST len, | |
1563 | struct bp_target_info *target_info, | |
1564 | struct gdbarch *gdbarch) | |
1565 | { | |
1566 | /* Now do full processing of the found relevant range of elements. */ | |
1567 | CORE_ADDR bp_addr = 0; | |
1568 | int bp_size = 0; | |
1569 | int bptoffset = 0; | |
1570 | ||
1571 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1572 | current_program_space->aspace, 0)) | |
1573 | { | |
1574 | /* The breakpoint is inserted in a different address space. */ | |
1575 | return; | |
1576 | } | |
1577 | ||
1578 | /* Addresses and length of the part of the breakpoint that | |
1579 | we need to copy. */ | |
1580 | bp_addr = target_info->placed_address; | |
1581 | bp_size = target_info->shadow_len; | |
1582 | ||
1583 | if (bp_addr + bp_size <= memaddr) | |
1584 | { | |
1585 | /* The breakpoint is entirely before the chunk of memory we are | |
1586 | reading. */ | |
1587 | return; | |
1588 | } | |
1589 | ||
1590 | if (bp_addr >= memaddr + len) | |
1591 | { | |
1592 | /* The breakpoint is entirely after the chunk of memory we are | |
1593 | reading. */ | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | /* Offset within shadow_contents. */ | |
1598 | if (bp_addr < memaddr) | |
1599 | { | |
1600 | /* Only copy the second part of the breakpoint. */ | |
1601 | bp_size -= memaddr - bp_addr; | |
1602 | bptoffset = memaddr - bp_addr; | |
1603 | bp_addr = memaddr; | |
1604 | } | |
1605 | ||
1606 | if (bp_addr + bp_size > memaddr + len) | |
1607 | { | |
1608 | /* Only copy the first part of the breakpoint. */ | |
1609 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1610 | } | |
1611 | ||
1612 | if (readbuf != NULL) | |
1613 | { | |
1614 | /* Verify that the readbuf buffer does not overlap with the | |
1615 | shadow_contents buffer. */ | |
1616 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1617 | || readbuf >= (target_info->shadow_contents | |
1618 | + target_info->shadow_len)); | |
1619 | ||
1620 | /* Update the read buffer with this inserted breakpoint's | |
1621 | shadow. */ | |
1622 | memcpy (readbuf + bp_addr - memaddr, | |
1623 | target_info->shadow_contents + bptoffset, bp_size); | |
1624 | } | |
1625 | else | |
1626 | { | |
1627 | const unsigned char *bp; | |
0d5ed153 MR |
1628 | CORE_ADDR addr = target_info->reqstd_address; |
1629 | int placed_size; | |
9d497a19 PA |
1630 | |
1631 | /* Update the shadow with what we want to write to memory. */ | |
1632 | memcpy (target_info->shadow_contents + bptoffset, | |
1633 | writebuf_org + bp_addr - memaddr, bp_size); | |
1634 | ||
1635 | /* Determine appropriate breakpoint contents and size for this | |
1636 | address. */ | |
0d5ed153 | 1637 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1638 | |
1639 | /* Update the final write buffer with this inserted | |
1640 | breakpoint's INSN. */ | |
1641 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1642 | } | |
1643 | } | |
1644 | ||
8defab1a | 1645 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1646 | by replacing any memory breakpoints with their shadowed contents. |
1647 | ||
35c63cd8 JB |
1648 | If READBUF is not NULL, this buffer must not overlap with any of |
1649 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1650 | a failed assertion internal error will be raised. | |
1651 | ||
876fa593 | 1652 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1653 | bl->address - bp_locations_placed_address_before_address_max |
1654 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1655 | The range we were requested to resolve shadows for is: |
1656 | memaddr ... memaddr + len | |
1657 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1658 | memaddr + len <= (bl->address |
f5336ca5 | 1659 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1660 | and: |
f5336ca5 | 1661 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1662 | |
8defab1a | 1663 | void |
f0ba3972 PA |
1664 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1665 | const gdb_byte *writebuf_org, | |
1666 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1667 | { |
4a64f543 MS |
1668 | /* Left boundary, right boundary and median element of our binary |
1669 | search. */ | |
876fa593 JK |
1670 | unsigned bc_l, bc_r, bc; |
1671 | ||
4a64f543 MS |
1672 | /* Find BC_L which is a leftmost element which may affect BUF |
1673 | content. It is safe to report lower value but a failure to | |
1674 | report higher one. */ | |
876fa593 JK |
1675 | |
1676 | bc_l = 0; | |
5d51cd5d | 1677 | bc_r = bp_locations.size (); |
876fa593 JK |
1678 | while (bc_l + 1 < bc_r) |
1679 | { | |
35df4500 | 1680 | struct bp_location *bl; |
876fa593 JK |
1681 | |
1682 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1683 | bl = bp_locations[bc]; |
876fa593 | 1684 | |
4a64f543 MS |
1685 | /* Check first BL->ADDRESS will not overflow due to the added |
1686 | constant. Then advance the left boundary only if we are sure | |
1687 | the BC element can in no way affect the BUF content (MEMADDR | |
1688 | to MEMADDR + LEN range). | |
876fa593 | 1689 | |
f5336ca5 | 1690 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1691 | offset so that we cannot miss a breakpoint with its shadow |
1692 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1693 | |
f5336ca5 | 1694 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1695 | >= bl->address) |
f5336ca5 | 1696 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1697 | <= memaddr)) |
876fa593 JK |
1698 | bc_l = bc; |
1699 | else | |
1700 | bc_r = bc; | |
1701 | } | |
1702 | ||
128070bb PA |
1703 | /* Due to the binary search above, we need to make sure we pick the |
1704 | first location that's at BC_L's address. E.g., if there are | |
1705 | multiple locations at the same address, BC_L may end up pointing | |
1706 | at a duplicate location, and miss the "master"/"inserted" | |
1707 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1708 | B: | |
1709 | ||
1710 | L1@A, L2@A, L3@B, ... | |
1711 | ||
1712 | BC_L could end up pointing at location L2, while the "master" | |
1713 | location could be L1. Since the `loc->inserted' flag is only set | |
1714 | on "master" locations, we'd forget to restore the shadow of L1 | |
1715 | and L2. */ | |
1716 | while (bc_l > 0 | |
f5336ca5 | 1717 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1718 | bc_l--; |
1719 | ||
876fa593 JK |
1720 | /* Now do full processing of the found relevant range of elements. */ |
1721 | ||
5d51cd5d | 1722 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1723 | { |
1724 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1725 | |
01add95b SM |
1726 | /* bp_location array has BL->OWNER always non-NULL. */ |
1727 | if (bl->owner->type == bp_none) | |
1728 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1729 | bl->owner->number); | |
ffce0d52 | 1730 | |
01add95b SM |
1731 | /* Performance optimization: any further element can no longer affect BUF |
1732 | content. */ | |
876fa593 | 1733 | |
01add95b SM |
1734 | if (bl->address >= bp_locations_placed_address_before_address_max |
1735 | && (memaddr + len | |
1736 | <= (bl->address | |
1737 | - bp_locations_placed_address_before_address_max))) | |
1738 | break; | |
876fa593 | 1739 | |
01add95b SM |
1740 | if (!bp_location_has_shadow (bl)) |
1741 | continue; | |
6c95b8df | 1742 | |
01add95b SM |
1743 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1744 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1745 | } | |
c906108c | 1746 | } |
9d497a19 | 1747 | |
f2478a7e | 1748 | /* See breakpoint.h. */ |
b775012e | 1749 | |
f2478a7e | 1750 | bool |
b775012e LM |
1751 | is_breakpoint (const struct breakpoint *bpt) |
1752 | { | |
1753 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1754 | || bpt->type == bp_hardware_breakpoint |
1755 | || bpt->type == bp_dprintf); | |
b775012e LM |
1756 | } |
1757 | ||
60e1c644 PA |
1758 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1759 | ||
f2478a7e | 1760 | static bool |
d77f58be | 1761 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1762 | { |
1763 | return (bpt->type == bp_hardware_watchpoint | |
1764 | || bpt->type == bp_read_watchpoint | |
1765 | || bpt->type == bp_access_watchpoint); | |
1766 | } | |
7270d8f2 | 1767 | |
f2478a7e | 1768 | /* See breakpoint.h. */ |
60e1c644 | 1769 | |
f2478a7e | 1770 | bool |
d77f58be | 1771 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1772 | { |
1773 | return (is_hardware_watchpoint (bpt) | |
1774 | || bpt->type == bp_watchpoint); | |
1775 | } | |
1776 | ||
3a5c3e22 PA |
1777 | /* Returns true if the current thread and its running state are safe |
1778 | to evaluate or update watchpoint B. Watchpoints on local | |
1779 | expressions need to be evaluated in the context of the thread that | |
1780 | was current when the watchpoint was created, and, that thread needs | |
1781 | to be stopped to be able to select the correct frame context. | |
1782 | Watchpoints on global expressions can be evaluated on any thread, | |
1783 | and in any state. It is presently left to the target allowing | |
1784 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1785 | |
1786 | static int | |
3a5c3e22 | 1787 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1788 | { |
c1fc2657 | 1789 | return (b->pspace == current_program_space |
d7e15655 TT |
1790 | && (b->watchpoint_thread == null_ptid |
1791 | || (inferior_ptid == b->watchpoint_thread | |
611841bb | 1792 | && !inferior_thread ()->executing ()))); |
f6bc2008 PA |
1793 | } |
1794 | ||
d0fb5eae JK |
1795 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1796 | associated bp_watchpoint_scope breakpoint. */ | |
1797 | ||
1798 | static void | |
3a5c3e22 | 1799 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1800 | { |
c1fc2657 | 1801 | if (w->related_breakpoint != w) |
d0fb5eae | 1802 | { |
c1fc2657 SM |
1803 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1804 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1805 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1806 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1807 | w->related_breakpoint = w; | |
d0fb5eae | 1808 | } |
c1fc2657 | 1809 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1810 | } |
1811 | ||
bb9d5f81 PP |
1812 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1813 | watchpoint W. */ | |
1814 | ||
1815 | static struct value * | |
1816 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1817 | { | |
1818 | struct value *bit_val; | |
1819 | ||
1820 | if (val == NULL) | |
1821 | return NULL; | |
1822 | ||
1823 | bit_val = allocate_value (value_type (val)); | |
1824 | ||
1825 | unpack_value_bitfield (bit_val, | |
1826 | w->val_bitpos, | |
1827 | w->val_bitsize, | |
50888e42 | 1828 | value_contents_for_printing (val).data (), |
bb9d5f81 PP |
1829 | value_offset (val), |
1830 | val); | |
1831 | ||
1832 | return bit_val; | |
1833 | } | |
1834 | ||
6e14e441 PA |
1835 | /* Allocate a dummy location and add it to B. This is required |
1836 | because bpstat_stop_status requires a location to be able to report | |
1837 | stops. */ | |
c6d81124 PA |
1838 | |
1839 | static void | |
6e14e441 PA |
1840 | add_dummy_location (struct breakpoint *b, |
1841 | struct program_space *pspace) | |
c6d81124 | 1842 | { |
6e14e441 | 1843 | gdb_assert (b->loc == NULL); |
c6d81124 | 1844 | |
6e14e441 | 1845 | b->loc = new bp_location (b, bp_loc_other); |
c6d81124 | 1846 | b->loc->pspace = pspace; |
c6d81124 PA |
1847 | } |
1848 | ||
567e1b4e JB |
1849 | /* Assuming that B is a watchpoint: |
1850 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1851 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1852 | - Evaluate the condition if there is one, and store the result |
1853 | in b->loc->cond. | |
a5606eee VP |
1854 | - Update the list of values that must be watched in B->loc. |
1855 | ||
4a64f543 MS |
1856 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1857 | nothing. If this is local watchpoint that is out of scope, delete | |
1858 | it. | |
1859 | ||
1860 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1861 | removed + inserted on each stop here. Normal breakpoints must | |
1862 | never be removed because they might be missed by a running thread | |
1863 | when debugging in non-stop mode. On the other hand, hardware | |
1864 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1865 | to each LWP since they are stored in each LWP's hardware debug | |
1866 | registers. Therefore, such LWP must be stopped first in order to | |
1867 | be able to modify its hardware watchpoints. | |
1868 | ||
1869 | Hardware watchpoints must be reset exactly once after being | |
1870 | presented to the user. It cannot be done sooner, because it would | |
1871 | reset the data used to present the watchpoint hit to the user. And | |
1872 | it must not be done later because it could display the same single | |
1873 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1874 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1875 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1876 | not user-visible - its hit is suppressed if the memory content has | |
1877 | not changed. | |
1878 | ||
1879 | The following constraints influence the location where we can reset | |
1880 | hardware watchpoints: | |
1881 | ||
1882 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1883 | called several times when GDB stops. | |
1884 | ||
1885 | [linux] | |
1886 | * Multiple hardware watchpoints can be hit at the same time, | |
1887 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1888 | hit at a time as the reason for stopping, and all the other hits | |
1889 | are presented later, one after the other, each time the user | |
1890 | requests the execution to be resumed. Execution is not resumed | |
1891 | for the threads still having pending hit event stored in | |
1892 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1893 | the inferior on the first stop the thread hit event is kept being | |
1894 | reported from its cached value by linux_nat_stopped_data_address | |
1895 | until the real thread resume happens after the watchpoint gets | |
1896 | presented and thus its LWP_INFO->STATUS gets reset. | |
1897 | ||
1898 | Therefore the hardware watchpoint hit can get safely reset on the | |
1899 | watchpoint removal from inferior. */ | |
a79d3c27 | 1900 | |
b40ce68a | 1901 | static void |
3a5c3e22 | 1902 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1903 | { |
a5606eee | 1904 | int within_current_scope; |
a5606eee | 1905 | struct frame_id saved_frame_id; |
66076460 | 1906 | int frame_saved; |
a5606eee | 1907 | |
f6bc2008 PA |
1908 | /* If this is a local watchpoint, we only want to check if the |
1909 | watchpoint frame is in scope if the current thread is the thread | |
1910 | that was used to create the watchpoint. */ | |
1911 | if (!watchpoint_in_thread_scope (b)) | |
1912 | return; | |
1913 | ||
c1fc2657 | 1914 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1915 | return; |
1916 | ||
66076460 | 1917 | frame_saved = 0; |
a5606eee VP |
1918 | |
1919 | /* Determine if the watchpoint is within scope. */ | |
1920 | if (b->exp_valid_block == NULL) | |
1921 | within_current_scope = 1; | |
1922 | else | |
1923 | { | |
b5db5dfc UW |
1924 | struct frame_info *fi = get_current_frame (); |
1925 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1926 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1927 | ||
c9cf6e20 MG |
1928 | /* If we're at a point where the stack has been destroyed |
1929 | (e.g. in a function epilogue), unwinding may not work | |
1930 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1931 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1932 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1933 | return; |
66076460 DJ |
1934 | |
1935 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1936 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1937 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1938 | took a frame parameter, so that we didn't have to change the |
1939 | selected frame. */ | |
66076460 DJ |
1940 | frame_saved = 1; |
1941 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1942 | ||
a5606eee VP |
1943 | fi = frame_find_by_id (b->watchpoint_frame); |
1944 | within_current_scope = (fi != NULL); | |
1945 | if (within_current_scope) | |
1946 | select_frame (fi); | |
1947 | } | |
1948 | ||
b5db5dfc UW |
1949 | /* We don't free locations. They are stored in the bp_location array |
1950 | and update_global_location_list will eventually delete them and | |
1951 | remove breakpoints if needed. */ | |
c1fc2657 | 1952 | b->loc = NULL; |
b5db5dfc | 1953 | |
a5606eee VP |
1954 | if (within_current_scope && reparse) |
1955 | { | |
bbc13ae3 | 1956 | const char *s; |
d63d0675 | 1957 | |
4d01a485 | 1958 | b->exp.reset (); |
a4c50be3 TT |
1959 | s = (b->exp_string_reparse |
1960 | ? b->exp_string_reparse.get () | |
1961 | : b->exp_string.get ()); | |
1bb9788d | 1962 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1963 | /* If the meaning of expression itself changed, the old value is |
1964 | no longer relevant. We don't want to report a watchpoint hit | |
1965 | to the user when the old value and the new value may actually | |
1966 | be completely different objects. */ | |
fa4727a6 | 1967 | b->val = NULL; |
4c1d86d9 | 1968 | b->val_valid = false; |
60e1c644 PA |
1969 | |
1970 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1971 | expression is stored in the breakpoint object, not in the | |
1972 | locations (re)created below. */ | |
c1fc2657 | 1973 | if (b->cond_string != NULL) |
60e1c644 | 1974 | { |
4d01a485 | 1975 | b->cond_exp.reset (); |
60e1c644 | 1976 | |
6f781ee3 | 1977 | s = b->cond_string.get (); |
1bb9788d | 1978 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1979 | } |
a5606eee | 1980 | } |
a5606eee VP |
1981 | |
1982 | /* If we failed to parse the expression, for example because | |
1983 | it refers to a global variable in a not-yet-loaded shared library, | |
1984 | don't try to insert watchpoint. We don't automatically delete | |
1985 | such watchpoint, though, since failure to parse expression | |
1986 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1987 | if (!target_has_execution ()) |
2d134ed3 PA |
1988 | { |
1989 | /* Without execution, memory can't change. No use to try and | |
1990 | set watchpoint locations. The watchpoint will be reset when | |
1991 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1992 | if (!can_use_hw_watchpoints) |
1993 | { | |
c47614fe | 1994 | if (b->works_in_software_mode ()) |
c1fc2657 | 1995 | b->type = bp_watchpoint; |
e8369a73 | 1996 | else |
638aa5a1 AB |
1997 | error (_("Can't set read/access watchpoint when " |
1998 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1999 | } |
2d134ed3 PA |
2000 | } |
2001 | else if (within_current_scope && b->exp) | |
a5606eee | 2002 | { |
a6535de1 | 2003 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 2004 | struct value *v, *result; |
2d134ed3 | 2005 | struct program_space *frame_pspace; |
a5606eee | 2006 | |
1eaebe02 | 2007 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 2008 | &val_chain, false); |
a5606eee | 2009 | |
a5606eee VP |
2010 | /* Avoid setting b->val if it's already set. The meaning of |
2011 | b->val is 'the last value' user saw, and we should update | |
2012 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
2013 | happens, the code that reports it updates b->val directly. |
2014 | We don't keep track of the memory value for masked | |
2015 | watchpoints. */ | |
c1fc2657 | 2016 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 2017 | { |
bb9d5f81 | 2018 | if (b->val_bitsize != 0) |
850645cf TT |
2019 | v = extract_bitfield_from_watchpoint_value (b, v); |
2020 | b->val = release_value (v); | |
4c1d86d9 | 2021 | b->val_valid = true; |
fa4727a6 | 2022 | } |
a5606eee | 2023 | |
2d134ed3 PA |
2024 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
2025 | ||
a5606eee | 2026 | /* Look at each value on the value chain. */ |
a6535de1 TT |
2027 | gdb_assert (!val_chain.empty ()); |
2028 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 2029 | { |
a6535de1 TT |
2030 | v = iter.get (); |
2031 | ||
a5606eee VP |
2032 | /* If it's a memory location, and GDB actually needed |
2033 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
2034 | must watch it. If the first value returned is |
2035 | still lazy, that means an error occurred reading it; | |
2036 | watch it anyway in case it becomes readable. */ | |
a5606eee | 2037 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 2038 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
2039 | { |
2040 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 2041 | |
a5606eee VP |
2042 | /* We only watch structs and arrays if user asked |
2043 | for it explicitly, never if they just happen to | |
2044 | appear in the middle of some value chain. */ | |
fa4727a6 | 2045 | if (v == result |
78134374 SM |
2046 | || (vtype->code () != TYPE_CODE_STRUCT |
2047 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
2048 | { |
2049 | CORE_ADDR addr; | |
f486487f | 2050 | enum target_hw_bp_type type; |
a5606eee | 2051 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
2052 | int bitpos = 0, bitsize = 0; |
2053 | ||
2054 | if (value_bitsize (v) != 0) | |
2055 | { | |
2056 | /* Extract the bit parameters out from the bitfield | |
2057 | sub-expression. */ | |
2058 | bitpos = value_bitpos (v); | |
2059 | bitsize = value_bitsize (v); | |
2060 | } | |
2061 | else if (v == result && b->val_bitsize != 0) | |
2062 | { | |
2063 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
2064 | lvalue whose bit parameters are saved in the fields | |
2065 | VAL_BITPOS and VAL_BITSIZE. */ | |
2066 | bitpos = b->val_bitpos; | |
2067 | bitsize = b->val_bitsize; | |
2068 | } | |
a5606eee | 2069 | |
42ae5230 | 2070 | addr = value_address (v); |
bb9d5f81 PP |
2071 | if (bitsize != 0) |
2072 | { | |
2073 | /* Skip the bytes that don't contain the bitfield. */ | |
2074 | addr += bitpos / 8; | |
2075 | } | |
2076 | ||
a5606eee | 2077 | type = hw_write; |
c1fc2657 | 2078 | if (b->type == bp_read_watchpoint) |
a5606eee | 2079 | type = hw_read; |
c1fc2657 | 2080 | else if (b->type == bp_access_watchpoint) |
a5606eee | 2081 | type = hw_access; |
3a5c3e22 | 2082 | |
ee89d0a4 | 2083 | loc = b->allocate_location (); |
c1fc2657 | 2084 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
a5606eee VP |
2085 | ; |
2086 | *tmp = loc; | |
8ee511af | 2087 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
2088 | |
2089 | loc->pspace = frame_pspace; | |
f17d9474 | 2090 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
2091 | |
2092 | if (bitsize != 0) | |
2093 | { | |
2094 | /* Just cover the bytes that make up the bitfield. */ | |
2095 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2096 | } | |
2097 | else | |
2098 | loc->length = TYPE_LENGTH (value_type (v)); | |
2099 | ||
a5606eee VP |
2100 | loc->watchpoint_type = type; |
2101 | } | |
2102 | } | |
9fa40276 TJB |
2103 | } |
2104 | ||
2105 | /* Change the type of breakpoint between hardware assisted or | |
2106 | an ordinary watchpoint depending on the hardware support | |
2107 | and free hardware slots. REPARSE is set when the inferior | |
2108 | is started. */ | |
a9634178 | 2109 | if (reparse) |
9fa40276 | 2110 | { |
e09342b5 | 2111 | int reg_cnt; |
9fa40276 | 2112 | enum bp_loc_type loc_type; |
a5606eee | 2113 | |
a9634178 | 2114 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2115 | |
2116 | if (reg_cnt) | |
9fa40276 TJB |
2117 | { |
2118 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2119 | enum bptype type; |
9fa40276 | 2120 | |
a9634178 TJB |
2121 | /* Use an exact watchpoint when there's only one memory region to be |
2122 | watched, and only one debug register is needed to watch it. */ | |
2123 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2124 | ||
9fa40276 | 2125 | /* We need to determine how many resources are already |
e09342b5 TJB |
2126 | used for all other hardware watchpoints plus this one |
2127 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2128 | this watchpoint in as well. */ |
2129 | ||
2130 | /* If this is a software watchpoint, we try to turn it | |
2131 | to a hardware one -- count resources as if B was of | |
2132 | hardware watchpoint type. */ | |
c1fc2657 | 2133 | type = b->type; |
a1398e0c PA |
2134 | if (type == bp_watchpoint) |
2135 | type = bp_hardware_watchpoint; | |
2136 | ||
2137 | /* This watchpoint may or may not have been placed on | |
2138 | the list yet at this point (it won't be in the list | |
2139 | if we're trying to create it for the first time, | |
2140 | through watch_command), so always account for it | |
2141 | manually. */ | |
2142 | ||
2143 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2144 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2145 | |
2146 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2147 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2148 | |
2149 | target_resources_ok | |
2150 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2151 | if (target_resources_ok <= 0) |
a9634178 | 2152 | { |
5a61e176 | 2153 | bool sw_mode = b->works_in_software_mode (); |
9c06b0b4 TJB |
2154 | |
2155 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2156 | error (_("Target does not support this type of " |
2157 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2158 | else if (target_resources_ok < 0 && !sw_mode) |
2159 | error (_("There are not enough available hardware " | |
2160 | "resources for this watchpoint.")); | |
a1398e0c PA |
2161 | |
2162 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2163 | b->type = bp_watchpoint; |
a1398e0c PA |
2164 | } |
2165 | else | |
2166 | { | |
2167 | /* If this was a software watchpoint, we've just | |
2168 | found we have enough resources to turn it to a | |
2169 | hardware watchpoint. Otherwise, this is a | |
2170 | nop. */ | |
c1fc2657 | 2171 | b->type = type; |
a9634178 | 2172 | } |
9fa40276 | 2173 | } |
c47614fe | 2174 | else if (!b->works_in_software_mode ()) |
638aa5a1 AB |
2175 | { |
2176 | if (!can_use_hw_watchpoints) | |
2177 | error (_("Can't set read/access watchpoint when " | |
2178 | "hardware watchpoints are disabled.")); | |
2179 | else | |
2180 | error (_("Expression cannot be implemented with " | |
2181 | "read/access watchpoint.")); | |
2182 | } | |
9fa40276 | 2183 | else |
c1fc2657 | 2184 | b->type = bp_watchpoint; |
9fa40276 | 2185 | |
6e14e441 | 2186 | loc_type = (b->type == bp_watchpoint? bp_loc_software_watchpoint |
9fa40276 | 2187 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2188 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2189 | bl->loc_type = loc_type; |
2190 | } | |
2191 | ||
c7437ca6 PA |
2192 | /* If a software watchpoint is not watching any memory, then the |
2193 | above left it without any location set up. But, | |
2194 | bpstat_stop_status requires a location to be able to report | |
2195 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 | 2196 | if (b->type == bp_watchpoint && b->loc == NULL) |
6e14e441 | 2197 | add_dummy_location (b, frame_pspace); |
a5606eee VP |
2198 | } |
2199 | else if (!within_current_scope) | |
7270d8f2 | 2200 | { |
6cb06a8c | 2201 | gdb_printf (_("\ |
ac74f770 MS |
2202 | Watchpoint %d deleted because the program has left the block\n\ |
2203 | in which its expression is valid.\n"), | |
6cb06a8c | 2204 | b->number); |
d0fb5eae | 2205 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2206 | } |
a5606eee VP |
2207 | |
2208 | /* Restore the selected frame. */ | |
66076460 DJ |
2209 | if (frame_saved) |
2210 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2211 | } |
2212 | ||
a5606eee | 2213 | |
74960c60 | 2214 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2215 | inserted in the inferior. We don't differentiate the type of BL's owner |
2216 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2217 | breakpoint_ops is not defined, because in insert_bp_location, | |
2218 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2219 | static int |
35df4500 | 2220 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2221 | { |
35df4500 | 2222 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2223 | return 0; |
2224 | ||
35df4500 | 2225 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2226 | return 0; |
2227 | ||
b5fa468f TBA |
2228 | if (!bl->enabled || bl->disabled_by_cond |
2229 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2230 | return 0; |
2231 | ||
f8eba3c6 TT |
2232 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2233 | return 0; | |
2234 | ||
56710373 PA |
2235 | /* This is set for example, when we're attached to the parent of a |
2236 | vfork, and have detached from the child. The child is running | |
2237 | free, and we expect it to do an exec or exit, at which point the | |
2238 | OS makes the parent schedulable again (and the target reports | |
2239 | that the vfork is done). Until the child is done with the shared | |
2240 | memory region, do not insert breakpoints in the parent, otherwise | |
2241 | the child could still trip on the parent's breakpoints. Since | |
2242 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2243 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2244 | return 0; |
2245 | ||
31e77af2 | 2246 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2247 | location, except if the breakpoint is a single-step breakpoint, |
2248 | and the breakpoint's thread is the thread which is stepping past | |
2249 | a breakpoint. */ | |
31e77af2 PA |
2250 | if ((bl->loc_type == bp_loc_software_breakpoint |
2251 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2252 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2253 | bl->address) |
2254 | /* The single-step breakpoint may be inserted at the location | |
2255 | we're trying to step if the instruction branches to itself. | |
2256 | However, the instruction won't be executed at all and it may | |
2257 | break the semantics of the instruction, for example, the | |
2258 | instruction is a conditional branch or updates some flags. | |
2259 | We can't fix it unless GDB is able to emulate the instruction | |
2260 | or switch to displaced stepping. */ | |
2261 | && !(bl->owner->type == bp_single_step | |
2262 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2263 | { |
1eb8556f SM |
2264 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2265 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2266 | return 0; |
2267 | } | |
31e77af2 | 2268 | |
963f9c80 PA |
2269 | /* Don't insert watchpoints if we're trying to step past the |
2270 | instruction that triggered one. */ | |
2271 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2272 | && stepping_past_nonsteppable_watchpoint ()) | |
2273 | { | |
1eb8556f | 2274 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2275 | "skipping watchpoint at %s:%d", |
1eb8556f | 2276 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2277 | return 0; |
2278 | } | |
2279 | ||
74960c60 VP |
2280 | return 1; |
2281 | } | |
2282 | ||
934709f0 PW |
2283 | /* Same as should_be_inserted but does the check assuming |
2284 | that the location is not duplicated. */ | |
2285 | ||
2286 | static int | |
2287 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2288 | { | |
2289 | int result; | |
2290 | const int save_duplicate = bl->duplicate; | |
2291 | ||
2292 | bl->duplicate = 0; | |
2293 | result = should_be_inserted (bl); | |
2294 | bl->duplicate = save_duplicate; | |
2295 | return result; | |
2296 | } | |
2297 | ||
b775012e LM |
2298 | /* Parses a conditional described by an expression COND into an |
2299 | agent expression bytecode suitable for evaluation | |
2300 | by the bytecode interpreter. Return NULL if there was | |
2301 | any error during parsing. */ | |
2302 | ||
833177a4 | 2303 | static agent_expr_up |
b775012e LM |
2304 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2305 | { | |
833177a4 | 2306 | if (cond == NULL) |
b775012e LM |
2307 | return NULL; |
2308 | ||
833177a4 PA |
2309 | agent_expr_up aexpr; |
2310 | ||
b775012e LM |
2311 | /* We don't want to stop processing, so catch any errors |
2312 | that may show up. */ | |
a70b8144 | 2313 | try |
b775012e | 2314 | { |
036e657b | 2315 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2316 | } |
2317 | ||
230d2906 | 2318 | catch (const gdb_exception_error &ex) |
b775012e LM |
2319 | { |
2320 | /* If we got here, it means the condition could not be parsed to a valid | |
2321 | bytecode expression and thus can't be evaluated on the target's side. | |
2322 | It's no use iterating through the conditions. */ | |
b775012e LM |
2323 | } |
2324 | ||
2325 | /* We have a valid agent expression. */ | |
2326 | return aexpr; | |
2327 | } | |
2328 | ||
2329 | /* Based on location BL, create a list of breakpoint conditions to be | |
2330 | passed on to the target. If we have duplicated locations with different | |
2331 | conditions, we will add such conditions to the list. The idea is that the | |
2332 | target will evaluate the list of conditions and will only notify GDB when | |
2333 | one of them is true. */ | |
2334 | ||
2335 | static void | |
2336 | build_target_condition_list (struct bp_location *bl) | |
2337 | { | |
b775012e LM |
2338 | int null_condition_or_parse_error = 0; |
2339 | int modified = bl->needs_update; | |
b775012e | 2340 | |
8b4f3082 | 2341 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2342 | bl->target_info.conditions.clear (); |
8b4f3082 | 2343 | |
b775012e LM |
2344 | /* This is only meaningful if the target is |
2345 | evaluating conditions and if the user has | |
2346 | opted for condition evaluation on the target's | |
2347 | side. */ | |
2348 | if (gdb_evaluates_breakpoint_condition_p () | |
2349 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2350 | return; | |
2351 | ||
e0d9a270 SM |
2352 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2353 | ||
b775012e | 2354 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2355 | conditions or conditions that fail to parse to a valid agent |
2356 | expression bytecode. If any of these happen, then it's no use to | |
2357 | send conditions to the target since this location will always | |
2358 | trigger and generate a response back to GDB. Note we consider | |
2359 | all locations at the same address irrespective of type, i.e., | |
2360 | even if the locations aren't considered duplicates (e.g., | |
2361 | software breakpoint and hardware breakpoint at the same | |
2362 | address). */ | |
e0d9a270 | 2363 | for (bp_location *loc : loc_range) |
b775012e | 2364 | { |
b775012e LM |
2365 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2366 | { | |
2367 | if (modified) | |
2368 | { | |
b775012e LM |
2369 | /* Re-parse the conditions since something changed. In that |
2370 | case we already freed the condition bytecodes (see | |
2371 | force_breakpoint_reinsertion). We just | |
2372 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2373 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2374 | loc->cond.get ()); | |
b775012e LM |
2375 | } |
2376 | ||
2377 | /* If we have a NULL bytecode expression, it means something | |
2378 | went wrong or we have a null condition expression. */ | |
2379 | if (!loc->cond_bytecode) | |
2380 | { | |
2381 | null_condition_or_parse_error = 1; | |
2382 | break; | |
2383 | } | |
2384 | } | |
2385 | } | |
2386 | ||
2387 | /* If any of these happened, it means we will have to evaluate the conditions | |
2388 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2389 | for all the other duplicate locations, thus we free all of them here. | |
2390 | ||
2391 | This is so we have a finer control over which locations' conditions are | |
2392 | being evaluated by GDB or the remote stub. */ | |
2393 | if (null_condition_or_parse_error) | |
2394 | { | |
e0d9a270 | 2395 | for (bp_location *loc : loc_range) |
b775012e | 2396 | { |
b775012e LM |
2397 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2398 | { | |
2399 | /* Only go as far as the first NULL bytecode is | |
2400 | located. */ | |
2401 | if (!loc->cond_bytecode) | |
2402 | return; | |
2403 | ||
833177a4 | 2404 | loc->cond_bytecode.reset (); |
b775012e LM |
2405 | } |
2406 | } | |
2407 | } | |
2408 | ||
7f32a4d5 PA |
2409 | /* No NULL conditions or failed bytecode generation. Build a |
2410 | condition list for this location's address. If we have software | |
2411 | and hardware locations at the same address, they aren't | |
2412 | considered duplicates, but we still marge all the conditions | |
2413 | anyway, as it's simpler, and doesn't really make a practical | |
2414 | difference. */ | |
e0d9a270 SM |
2415 | for (bp_location *loc : loc_range) |
2416 | if (loc->cond | |
2417 | && is_breakpoint (loc->owner) | |
2418 | && loc->pspace->num == bl->pspace->num | |
2419 | && loc->owner->enable_state == bp_enabled | |
2420 | && loc->enabled | |
2421 | && !loc->disabled_by_cond) | |
2422 | { | |
2423 | /* Add the condition to the vector. This will be used later | |
2424 | to send the conditions to the target. */ | |
2425 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2426 | } | |
b775012e LM |
2427 | |
2428 | return; | |
2429 | } | |
2430 | ||
d3ce09f5 SS |
2431 | /* Parses a command described by string CMD into an agent expression |
2432 | bytecode suitable for evaluation by the bytecode interpreter. | |
2433 | Return NULL if there was any error during parsing. */ | |
2434 | ||
833177a4 | 2435 | static agent_expr_up |
d3ce09f5 SS |
2436 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2437 | { | |
bbc13ae3 KS |
2438 | const char *cmdrest; |
2439 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2440 | struct gdbarch *gdbarch = get_current_arch (); |
2441 | ||
833177a4 | 2442 | if (cmd == NULL) |
d3ce09f5 SS |
2443 | return NULL; |
2444 | ||
2445 | cmdrest = cmd; | |
2446 | ||
2447 | if (*cmdrest == ',') | |
2448 | ++cmdrest; | |
f1735a53 | 2449 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2450 | |
2451 | if (*cmdrest++ != '"') | |
2452 | error (_("No format string following the location")); | |
2453 | ||
2454 | format_start = cmdrest; | |
2455 | ||
8e481c3b | 2456 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2457 | |
2458 | format_end = cmdrest; | |
2459 | ||
2460 | if (*cmdrest++ != '"') | |
2461 | error (_("Bad format string, non-terminated '\"'.")); | |
2462 | ||
f1735a53 | 2463 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2464 | |
2465 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2466 | error (_("Invalid argument syntax")); | |
2467 | ||
2468 | if (*cmdrest == ',') | |
2469 | cmdrest++; | |
f1735a53 | 2470 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2471 | |
2472 | /* For each argument, make an expression. */ | |
2473 | ||
8e481c3b | 2474 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2475 | while (*cmdrest != '\0') |
2476 | { | |
bbc13ae3 | 2477 | const char *cmd1; |
d3ce09f5 SS |
2478 | |
2479 | cmd1 = cmdrest; | |
4d01a485 | 2480 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2481 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2482 | cmdrest = cmd1; |
2483 | if (*cmdrest == ',') | |
2484 | ++cmdrest; | |
2485 | } | |
2486 | ||
833177a4 PA |
2487 | agent_expr_up aexpr; |
2488 | ||
d3ce09f5 SS |
2489 | /* We don't want to stop processing, so catch any errors |
2490 | that may show up. */ | |
a70b8144 | 2491 | try |
d3ce09f5 | 2492 | { |
036e657b JB |
2493 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2494 | format_start, format_end - format_start, | |
8e481c3b | 2495 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2496 | } |
230d2906 | 2497 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2498 | { |
2499 | /* If we got here, it means the command could not be parsed to a valid | |
2500 | bytecode expression and thus can't be evaluated on the target's side. | |
2501 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2502 | } |
492d29ea | 2503 | |
d3ce09f5 SS |
2504 | /* We have a valid agent expression, return it. */ |
2505 | return aexpr; | |
2506 | } | |
2507 | ||
2508 | /* Based on location BL, create a list of breakpoint commands to be | |
2509 | passed on to the target. If we have duplicated locations with | |
2510 | different commands, we will add any such to the list. */ | |
2511 | ||
2512 | static void | |
2513 | build_target_command_list (struct bp_location *bl) | |
2514 | { | |
d3ce09f5 SS |
2515 | int null_command_or_parse_error = 0; |
2516 | int modified = bl->needs_update; | |
d3ce09f5 | 2517 | |
3cde5c42 PA |
2518 | /* Clear commands left over from a previous insert. */ |
2519 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2520 | |
41fac0cf | 2521 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2522 | return; |
2523 | ||
41fac0cf PA |
2524 | /* For now, limit to agent-style dprintf breakpoints. */ |
2525 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2526 | return; |
2527 | ||
e0d9a270 SM |
2528 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2529 | ||
7f32a4d5 PA |
2530 | /* For now, if we have any location at the same address that isn't a |
2531 | dprintf, don't install the target-side commands, as that would | |
2532 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2533 | control. */ |
e0d9a270 SM |
2534 | for (bp_location *loc : loc_range) |
2535 | if (is_breakpoint (loc->owner) | |
2536 | && loc->pspace->num == bl->pspace->num | |
2537 | && loc->owner->type != bp_dprintf) | |
2538 | return; | |
41fac0cf | 2539 | |
d3ce09f5 SS |
2540 | /* Do a first pass to check for locations with no assigned |
2541 | conditions or conditions that fail to parse to a valid agent expression | |
2542 | bytecode. If any of these happen, then it's no use to send conditions | |
2543 | to the target since this location will always trigger and generate a | |
2544 | response back to GDB. */ | |
e0d9a270 | 2545 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2546 | { |
d3ce09f5 SS |
2547 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2548 | { | |
2549 | if (modified) | |
2550 | { | |
d3ce09f5 SS |
2551 | /* Re-parse the commands since something changed. In that |
2552 | case we already freed the command bytecodes (see | |
2553 | force_breakpoint_reinsertion). We just | |
2554 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2555 | loc->cmd_bytecode |
2556 | = parse_cmd_to_aexpr (bl->address, | |
6f781ee3 | 2557 | loc->owner->extra_string.get ()); |
d3ce09f5 SS |
2558 | } |
2559 | ||
2560 | /* If we have a NULL bytecode expression, it means something | |
2561 | went wrong or we have a null command expression. */ | |
2562 | if (!loc->cmd_bytecode) | |
2563 | { | |
2564 | null_command_or_parse_error = 1; | |
2565 | break; | |
2566 | } | |
2567 | } | |
2568 | } | |
2569 | ||
2570 | /* If anything failed, then we're not doing target-side commands, | |
2571 | and so clean up. */ | |
2572 | if (null_command_or_parse_error) | |
2573 | { | |
e0d9a270 SM |
2574 | for (bp_location *loc : loc_range) |
2575 | if (is_breakpoint (loc->owner) | |
2576 | && loc->pspace->num == bl->pspace->num) | |
2577 | { | |
2578 | /* Only go as far as the first NULL bytecode is | |
2579 | located. */ | |
2580 | if (loc->cmd_bytecode == NULL) | |
2581 | return; | |
d3ce09f5 | 2582 | |
e0d9a270 SM |
2583 | loc->cmd_bytecode.reset (); |
2584 | } | |
d3ce09f5 SS |
2585 | } |
2586 | ||
7f32a4d5 PA |
2587 | /* No NULL commands or failed bytecode generation. Build a command |
2588 | list for all duplicate locations at this location's address. | |
2589 | Note that here we must care for whether the breakpoint location | |
2590 | types are considered duplicates, otherwise, say, if we have a | |
2591 | software and hardware location at the same address, the target | |
2592 | could end up running the commands twice. For the moment, we only | |
2593 | support targets-side commands with dprintf, but it doesn't hurt | |
2594 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2595 | for (bp_location *loc : loc_range) |
2596 | if (breakpoint_locations_match (bl, loc) | |
2597 | && loc->owner->extra_string | |
2598 | && is_breakpoint (loc->owner) | |
2599 | && loc->pspace->num == bl->pspace->num | |
2600 | && loc->owner->enable_state == bp_enabled | |
2601 | && loc->enabled | |
2602 | && !loc->disabled_by_cond) | |
2603 | { | |
2604 | /* Add the command to the vector. This will be used later | |
2605 | to send the commands to the target. */ | |
2606 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2607 | } | |
d3ce09f5 SS |
2608 | |
2609 | bl->target_info.persist = 0; | |
2610 | /* Maybe flag this location as persistent. */ | |
2611 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2612 | bl->target_info.persist = 1; | |
2613 | } | |
2614 | ||
833b7ab5 YQ |
2615 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2616 | of breakpoint according to ADDR except single-step breakpoint. | |
2617 | Get the kind of single-step breakpoint according to the current | |
2618 | registers state. */ | |
cd6c3b4f YQ |
2619 | |
2620 | static int | |
2621 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2622 | { | |
833b7ab5 YQ |
2623 | if (bl->owner->type == bp_single_step) |
2624 | { | |
2625 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2626 | struct regcache *regcache; | |
2627 | ||
00431a78 | 2628 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2629 | |
2630 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2631 | regcache, addr); | |
2632 | } | |
2633 | else | |
2634 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2635 | } |
2636 | ||
35df4500 TJB |
2637 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2638 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2639 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2640 | Returns 0 for success, 1 if the bp_location type is not supported or |
2641 | -1 for failure. | |
879bfdc2 | 2642 | |
4a64f543 MS |
2643 | NOTE drow/2003-09-09: This routine could be broken down to an |
2644 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2645 | static int |
35df4500 | 2646 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2647 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2648 | int *disabled_breaks, |
dd61ec5c MW |
2649 | int *hw_breakpoint_error, |
2650 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2651 | { |
cc06b668 | 2652 | gdb_exception bp_excpt; |
879bfdc2 | 2653 | |
b775012e | 2654 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2655 | return 0; |
2656 | ||
35c63cd8 JB |
2657 | /* Note we don't initialize bl->target_info, as that wipes out |
2658 | the breakpoint location's shadow_contents if the breakpoint | |
2659 | is still inserted at that location. This in turn breaks | |
2660 | target_read_memory which depends on these buffers when | |
2661 | a memory read is requested at the breakpoint location: | |
2662 | Once the target_info has been wiped, we fail to see that | |
2663 | we have a breakpoint inserted at that address and thus | |
2664 | read the breakpoint instead of returning the data saved in | |
2665 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2666 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2667 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2668 | bl->target_info.length = bl->length; |
8181d85f | 2669 | |
b775012e LM |
2670 | /* When working with target-side conditions, we must pass all the conditions |
2671 | for the same breakpoint address down to the target since GDB will not | |
2672 | insert those locations. With a list of breakpoint conditions, the target | |
2673 | can decide when to stop and notify GDB. */ | |
2674 | ||
2675 | if (is_breakpoint (bl->owner)) | |
2676 | { | |
2677 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2678 | build_target_command_list (bl); |
2679 | /* Reset the modification marker. */ | |
b775012e LM |
2680 | bl->needs_update = 0; |
2681 | } | |
2682 | ||
7f32a4d5 PA |
2683 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2684 | set at a read-only address, then a breakpoint location will have | |
2685 | been changed to hardware breakpoint before we get here. If it is | |
2686 | "off" however, error out before actually trying to insert the | |
2687 | breakpoint, with a nicer error message. */ | |
35df4500 | 2688 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2689 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2690 | { |
7f32a4d5 | 2691 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2692 | |
7f32a4d5 PA |
2693 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2694 | { | |
6cb06a8c TT |
2695 | gdb_printf (tmp_error_stream, |
2696 | _("Cannot insert breakpoint %d.\n" | |
2697 | "Cannot set software breakpoint " | |
2698 | "at read-only address %s\n"), | |
2699 | bl->owner->number, | |
2700 | paddress (bl->gdbarch, bl->address)); | |
7f32a4d5 | 2701 | return 1; |
765dc015 | 2702 | } |
7f32a4d5 PA |
2703 | } |
2704 | ||
2705 | if (bl->loc_type == bp_loc_software_breakpoint | |
2706 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2707 | { | |
879bfdc2 DJ |
2708 | /* First check to see if we have to handle an overlay. */ |
2709 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2710 | || bl->section == NULL |
2711 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2712 | { |
2713 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2714 | try |
dd61ec5c | 2715 | { |
0000e5cc PA |
2716 | int val; |
2717 | ||
c47614fe | 2718 | val = bl->owner->insert_location (bl); |
0000e5cc | 2719 | if (val) |
688fca4f | 2720 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2721 | } |
94aeb44b | 2722 | catch (gdb_exception &e) |
dd61ec5c | 2723 | { |
94aeb44b | 2724 | bp_excpt = std::move (e); |
dd61ec5c | 2725 | } |
879bfdc2 DJ |
2726 | } |
2727 | else | |
2728 | { | |
4a64f543 | 2729 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2730 | Shall we set a breakpoint at the LMA? */ |
2731 | if (!overlay_events_enabled) | |
2732 | { | |
2733 | /* Yes -- overlay event support is not active, | |
2734 | so we must try to set a breakpoint at the LMA. | |
2735 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2736 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2737 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2738 | bl->owner->number); |
879bfdc2 DJ |
2739 | else |
2740 | { | |
35df4500 TJB |
2741 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2742 | bl->section); | |
879bfdc2 | 2743 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2744 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2745 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2746 | |
2747 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2748 | try |
0000e5cc PA |
2749 | { |
2750 | int val; | |
2751 | ||
579c6ad9 | 2752 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2753 | = breakpoint_kind (bl, &addr); |
2754 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2755 | val = target_insert_breakpoint (bl->gdbarch, |
2756 | &bl->overlay_target_info); | |
2757 | if (val) | |
688fca4f PA |
2758 | bp_excpt |
2759 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2760 | } |
94aeb44b | 2761 | catch (gdb_exception &e) |
0000e5cc | 2762 | { |
94aeb44b | 2763 | bp_excpt = std::move (e); |
0000e5cc PA |
2764 | } |
2765 | ||
688fca4f | 2766 | if (bp_excpt.reason != 0) |
6cb06a8c TT |
2767 | gdb_printf (tmp_error_stream, |
2768 | "Overlay breakpoint %d " | |
2769 | "failed: in ROM?\n", | |
2770 | bl->owner->number); | |
879bfdc2 DJ |
2771 | } |
2772 | } | |
2773 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2774 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2775 | { |
2776 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2777 | try |
dda83cd7 | 2778 | { |
0000e5cc PA |
2779 | int val; |
2780 | ||
c47614fe | 2781 | val = bl->owner->insert_location (bl); |
0000e5cc | 2782 | if (val) |
688fca4f | 2783 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2784 | } |
94aeb44b | 2785 | catch (gdb_exception &e) |
dda83cd7 | 2786 | { |
94aeb44b | 2787 | bp_excpt = std::move (e); |
dda83cd7 | 2788 | } |
879bfdc2 DJ |
2789 | } |
2790 | else | |
2791 | { | |
2792 | /* No. This breakpoint will not be inserted. | |
2793 | No error, but do not mark the bp as 'inserted'. */ | |
2794 | return 0; | |
2795 | } | |
2796 | } | |
2797 | ||
688fca4f | 2798 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2799 | { |
2800 | /* Can't set the breakpoint. */ | |
0000e5cc | 2801 | |
80dc83fd AB |
2802 | /* If the target has closed then it will have deleted any |
2803 | breakpoints inserted within the target inferior, as a result | |
2804 | any further attempts to interact with the breakpoint objects | |
2805 | is not possible. Just rethrow the error. */ | |
2806 | if (bp_excpt.error == TARGET_CLOSE_ERROR) | |
2807 | throw bp_excpt; | |
2808 | gdb_assert (bl->owner != nullptr); | |
2809 | ||
0000e5cc PA |
2810 | /* In some cases, we might not be able to insert a |
2811 | breakpoint in a shared library that has already been | |
2812 | removed, but we have not yet processed the shlib unload | |
2813 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2814 | breakpoint insertion themselves can't tell why the |
2815 | breakpoint insertion failed (e.g., the remote target | |
2816 | doesn't define error codes), so we must treat generic | |
2817 | errors as memory errors. */ | |
688fca4f PA |
2818 | if (bp_excpt.reason == RETURN_ERROR |
2819 | && (bp_excpt.error == GENERIC_ERROR | |
2820 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2821 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2822 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2823 | || shared_objfile_contains_address_p (bl->pspace, |
2824 | bl->address))) | |
879bfdc2 | 2825 | { |
4a64f543 | 2826 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2827 | bl->shlib_disabled = 1; |
76727919 | 2828 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2829 | if (!*disabled_breaks) |
2830 | { | |
6cb06a8c TT |
2831 | gdb_printf (tmp_error_stream, |
2832 | "Cannot insert breakpoint %d.\n", | |
2833 | bl->owner->number); | |
2834 | gdb_printf (tmp_error_stream, | |
2835 | "Temporarily disabling shared " | |
2836 | "library breakpoints:\n"); | |
3fbb6ffa TJB |
2837 | } |
2838 | *disabled_breaks = 1; | |
6cb06a8c TT |
2839 | gdb_printf (tmp_error_stream, |
2840 | "breakpoint #%d\n", bl->owner->number); | |
0000e5cc | 2841 | return 0; |
879bfdc2 DJ |
2842 | } |
2843 | else | |
879bfdc2 | 2844 | { |
35df4500 | 2845 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2846 | { |
0000e5cc | 2847 | *hw_breakpoint_error = 1; |
688fca4f | 2848 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
6cb06a8c TT |
2849 | gdb_printf (tmp_error_stream, |
2850 | "Cannot insert hardware breakpoint %d%s", | |
2851 | bl->owner->number, | |
2852 | bp_excpt.message ? ":" : ".\n"); | |
dda83cd7 | 2853 | if (bp_excpt.message != NULL) |
6cb06a8c TT |
2854 | gdb_printf (tmp_error_stream, "%s.\n", |
2855 | bp_excpt.what ()); | |
879bfdc2 DJ |
2856 | } |
2857 | else | |
2858 | { | |
688fca4f | 2859 | if (bp_excpt.message == NULL) |
0000e5cc | 2860 | { |
1ccbe998 | 2861 | std::string message |
0000e5cc PA |
2862 | = memory_error_message (TARGET_XFER_E_IO, |
2863 | bl->gdbarch, bl->address); | |
0000e5cc | 2864 | |
6cb06a8c TT |
2865 | gdb_printf (tmp_error_stream, |
2866 | "Cannot insert breakpoint %d.\n" | |
2867 | "%s\n", | |
2868 | bl->owner->number, message.c_str ()); | |
0000e5cc PA |
2869 | } |
2870 | else | |
2871 | { | |
6cb06a8c TT |
2872 | gdb_printf (tmp_error_stream, |
2873 | "Cannot insert breakpoint %d: %s\n", | |
2874 | bl->owner->number, | |
2875 | bp_excpt.what ()); | |
0000e5cc | 2876 | } |
879bfdc2 | 2877 | } |
0000e5cc | 2878 | return 1; |
879bfdc2 DJ |
2879 | |
2880 | } | |
2881 | } | |
2882 | else | |
35df4500 | 2883 | bl->inserted = 1; |
879bfdc2 | 2884 | |
0000e5cc | 2885 | return 0; |
879bfdc2 DJ |
2886 | } |
2887 | ||
35df4500 | 2888 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2889 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2890 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2891 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2892 | { |
0000e5cc PA |
2893 | int val; |
2894 | ||
c47614fe | 2895 | val = bl->owner->insert_location (bl); |
85d721b8 PA |
2896 | |
2897 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2898 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2899 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2900 | { |
85d721b8 PA |
2901 | /* But don't try to insert it, if there's already another |
2902 | hw_access location that would be considered a duplicate | |
2903 | of this one. */ | |
48d7020b | 2904 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2905 | if (loc != bl |
85d721b8 | 2906 | && loc->watchpoint_type == hw_access |
35df4500 | 2907 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2908 | { |
35df4500 TJB |
2909 | bl->duplicate = 1; |
2910 | bl->inserted = 1; | |
2911 | bl->target_info = loc->target_info; | |
2912 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2913 | val = 0; |
2914 | break; | |
2915 | } | |
2916 | ||
2917 | if (val == 1) | |
2918 | { | |
77b06cd7 | 2919 | bl->watchpoint_type = hw_access; |
c47614fe | 2920 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2921 | |
2922 | if (val) | |
2923 | /* Back to the original value. */ | |
2924 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2925 | } |
2926 | } | |
2927 | ||
35df4500 | 2928 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2929 | } |
2930 | ||
35df4500 | 2931 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2932 | { |
0000e5cc PA |
2933 | int val; |
2934 | ||
c47614fe | 2935 | val = bl->owner->insert_location (bl); |
77b06cd7 TJB |
2936 | if (val) |
2937 | { | |
2938 | bl->owner->enable_state = bp_disabled; | |
2939 | ||
2940 | if (val == 1) | |
2941 | warning (_("\ | |
2942 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2943 | of catchpoint."), bl->owner->number); | |
2944 | else | |
2945 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2946 | } | |
2947 | ||
2948 | bl->inserted = (val == 0); | |
1640b821 DJ |
2949 | |
2950 | /* We've already printed an error message if there was a problem | |
2951 | inserting this catchpoint, and we've disabled the catchpoint, | |
2952 | so just return success. */ | |
2953 | return 0; | |
879bfdc2 DJ |
2954 | } |
2955 | ||
2956 | return 0; | |
2957 | } | |
2958 | ||
6c95b8df PA |
2959 | /* This function is called when program space PSPACE is about to be |
2960 | deleted. It takes care of updating breakpoints to not reference | |
2961 | PSPACE anymore. */ | |
2962 | ||
2963 | void | |
2964 | breakpoint_program_space_exit (struct program_space *pspace) | |
2965 | { | |
6c95b8df | 2966 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2967 | for (breakpoint *b : all_breakpoints_safe ()) |
2968 | if (b->pspace == pspace) | |
2969 | delete_breakpoint (b); | |
6c95b8df PA |
2970 | |
2971 | /* Breakpoints set through other program spaces could have locations | |
2972 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2973 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2974 | { |
2975 | struct bp_location *tmp; | |
2976 | ||
2977 | if (loc->pspace == pspace) | |
2978 | { | |
2bdf28a0 | 2979 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2980 | if (loc->owner->loc == loc) |
2981 | loc->owner->loc = loc->next; | |
2982 | else | |
2983 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2984 | if (tmp->next == loc) | |
2985 | { | |
2986 | tmp->next = loc->next; | |
2987 | break; | |
2988 | } | |
2989 | } | |
2990 | } | |
2991 | ||
2992 | /* Now update the global location list to permanently delete the | |
2993 | removed locations above. */ | |
44702360 | 2994 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2995 | } |
2996 | ||
74960c60 VP |
2997 | /* Make sure all breakpoints are inserted in inferior. |
2998 | Throws exception on any error. | |
2999 | A breakpoint that is already inserted won't be inserted | |
3000 | again, so calling this function twice is safe. */ | |
3001 | void | |
3002 | insert_breakpoints (void) | |
3003 | { | |
43892fdf | 3004 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 3005 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
3006 | { |
3007 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3008 | ||
3009 | update_watchpoint (w, 0 /* don't reparse. */); | |
3010 | } | |
74960c60 | 3011 | |
04086b45 PA |
3012 | /* Updating watchpoints creates new locations, so update the global |
3013 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
3014 | ignore breakpoints_always_inserted_mode. Also, |
3015 | update_global_location_list tries to "upgrade" software | |
3016 | breakpoints to hardware breakpoints to handle "set breakpoint | |
3017 | auto-hw", so we need to call it even if we don't have new | |
3018 | locations. */ | |
04086b45 | 3019 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
3020 | } |
3021 | ||
b775012e LM |
3022 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3023 | target. It is the case with deleting and disabling of breakpoints when using | |
3024 | always-inserted mode. */ | |
3025 | ||
3026 | static void | |
3027 | update_inserted_breakpoint_locations (void) | |
3028 | { | |
b775012e LM |
3029 | int error_flag = 0; |
3030 | int val = 0; | |
3031 | int disabled_breaks = 0; | |
3032 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3033 | int hw_bp_details_reported = 0; |
b775012e | 3034 | |
d7e74731 | 3035 | string_file tmp_error_stream; |
b775012e LM |
3036 | |
3037 | /* Explicitly mark the warning -- this will only be printed if | |
3038 | there was an error. */ | |
d7e74731 | 3039 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 3040 | |
5ed8105e | 3041 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 3042 | |
48d7020b | 3043 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
3044 | { |
3045 | /* We only want to update software breakpoints and hardware | |
3046 | breakpoints. */ | |
3047 | if (!is_breakpoint (bl->owner)) | |
3048 | continue; | |
3049 | ||
3050 | /* We only want to update locations that are already inserted | |
3051 | and need updating. This is to avoid unwanted insertion during | |
3052 | deletion of breakpoints. */ | |
4daf1902 | 3053 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
3054 | continue; |
3055 | ||
3056 | switch_to_program_space_and_thread (bl->pspace); | |
3057 | ||
3058 | /* For targets that support global breakpoints, there's no need | |
3059 | to select an inferior to insert breakpoint to. In fact, even | |
3060 | if we aren't attached to any process yet, we should still | |
3061 | insert breakpoints. */ | |
f5656ead | 3062 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3063 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
3064 | continue; |
3065 | ||
d7e74731 | 3066 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3067 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3068 | if (val) |
3069 | error_flag = val; | |
3070 | } | |
3071 | ||
3072 | if (error_flag) | |
3073 | { | |
223ffa71 | 3074 | target_terminal::ours_for_output (); |
b775012e LM |
3075 | error_stream (tmp_error_stream); |
3076 | } | |
b775012e LM |
3077 | } |
3078 | ||
c30eee59 | 3079 | /* Used when starting or continuing the program. */ |
c906108c | 3080 | |
74960c60 VP |
3081 | static void |
3082 | insert_breakpoint_locations (void) | |
c906108c | 3083 | { |
eacd795a | 3084 | int error_flag = 0; |
c906108c | 3085 | int val = 0; |
3fbb6ffa | 3086 | int disabled_breaks = 0; |
81d0cc19 | 3087 | int hw_breakpoint_error = 0; |
dd61ec5c | 3088 | int hw_bp_error_explained_already = 0; |
c906108c | 3089 | |
d7e74731 PA |
3090 | string_file tmp_error_stream; |
3091 | ||
81d0cc19 GS |
3092 | /* Explicitly mark the warning -- this will only be printed if |
3093 | there was an error. */ | |
d7e74731 | 3094 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3095 | |
5ed8105e | 3096 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3097 | |
48d7020b | 3098 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3099 | { |
b775012e | 3100 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3101 | continue; |
3102 | ||
4a64f543 MS |
3103 | /* There is no point inserting thread-specific breakpoints if |
3104 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3105 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3106 | if (bl->owner->thread != -1 |
5d5658a1 | 3107 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3108 | continue; |
3109 | ||
35df4500 | 3110 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3111 | |
3112 | /* For targets that support global breakpoints, there's no need | |
3113 | to select an inferior to insert breakpoint to. In fact, even | |
3114 | if we aren't attached to any process yet, we should still | |
3115 | insert breakpoints. */ | |
f5656ead | 3116 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3117 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3118 | continue; |
3119 | ||
d7e74731 | 3120 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3121 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3122 | if (val) |
eacd795a | 3123 | error_flag = val; |
879bfdc2 | 3124 | } |
c906108c | 3125 | |
4a64f543 MS |
3126 | /* If we failed to insert all locations of a watchpoint, remove |
3127 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3128 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3129 | { |
3130 | int some_failed = 0; | |
a5606eee VP |
3131 | |
3132 | if (!is_hardware_watchpoint (bpt)) | |
3133 | continue; | |
3134 | ||
d6b74ac4 | 3135 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3136 | continue; |
74960c60 VP |
3137 | |
3138 | if (bpt->disposition == disp_del_at_next_stop) | |
3139 | continue; | |
a5606eee | 3140 | |
40cb8ca5 | 3141 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3142 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3143 | { |
3144 | some_failed = 1; | |
3145 | break; | |
3146 | } | |
40cb8ca5 | 3147 | |
a5606eee VP |
3148 | if (some_failed) |
3149 | { | |
40cb8ca5 | 3150 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3151 | if (loc->inserted) |
834c0d03 | 3152 | remove_breakpoint (loc); |
a5606eee VP |
3153 | |
3154 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3155 | tmp_error_stream.printf ("Could not insert " |
3156 | "hardware watchpoint %d.\n", | |
3157 | bpt->number); | |
eacd795a | 3158 | error_flag = -1; |
a5606eee VP |
3159 | } |
3160 | } | |
3161 | ||
eacd795a | 3162 | if (error_flag) |
81d0cc19 GS |
3163 | { |
3164 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3165 | message about possibly exhausted resources. */ |
dd61ec5c | 3166 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3167 | { |
d7e74731 | 3168 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3169 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3170 | } |
223ffa71 | 3171 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3172 | error_stream (tmp_error_stream); |
3173 | } | |
c906108c SS |
3174 | } |
3175 | ||
c30eee59 TJB |
3176 | /* Used when the program stops. |
3177 | Returns zero if successful, or non-zero if there was a problem | |
3178 | removing a breakpoint location. */ | |
3179 | ||
c906108c | 3180 | int |
fba45db2 | 3181 | remove_breakpoints (void) |
c906108c | 3182 | { |
3a1bae8e | 3183 | int val = 0; |
c906108c | 3184 | |
48d7020b | 3185 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3186 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3187 | val |= remove_breakpoint (bl); |
01add95b | 3188 | |
3a1bae8e | 3189 | return val; |
c906108c SS |
3190 | } |
3191 | ||
49fa26b0 PA |
3192 | /* When a thread exits, remove breakpoints that are related to |
3193 | that thread. */ | |
3194 | ||
3195 | static void | |
3196 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3197 | { | |
1428b37a | 3198 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3199 | { |
5d5658a1 | 3200 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3201 | { |
3202 | b->disposition = disp_del_at_next_stop; | |
3203 | ||
6cb06a8c | 3204 | gdb_printf (_("\ |
43792cf0 | 3205 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
6cb06a8c | 3206 | b->number, print_thread_id (tp)); |
49fa26b0 PA |
3207 | |
3208 | /* Hide it from the user. */ | |
3209 | b->number = 0; | |
3210 | } | |
3211 | } | |
3212 | } | |
3213 | ||
f3869b1a | 3214 | /* See breakpoint.h. */ |
6c95b8df | 3215 | |
f3869b1a | 3216 | void |
00431a78 | 3217 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3218 | { |
6c95b8df | 3219 | int val; |
6c95b8df | 3220 | |
48d7020b | 3221 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3222 | { |
3223 | if (bl->pspace != inf->pspace) | |
3224 | continue; | |
6c95b8df | 3225 | |
01add95b SM |
3226 | if (bl->inserted && !bl->target_info.persist) |
3227 | { | |
3228 | val = remove_breakpoint (bl); | |
3229 | if (val != 0) | |
3230 | return; | |
3231 | } | |
3232 | } | |
6c95b8df PA |
3233 | } |
3234 | ||
e58b0e63 PA |
3235 | static int internal_breakpoint_number = -1; |
3236 | ||
84f4c1fe PM |
3237 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3238 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3239 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3240 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3241 | breakpoint_count and that value incremented. Internal breakpoints |
3242 | do not set the internal var bpnum. */ | |
3243 | static void | |
3244 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3245 | { | |
3246 | if (internal) | |
3247 | b->number = internal_breakpoint_number--; | |
3248 | else | |
3249 | { | |
3250 | set_breakpoint_count (breakpoint_count + 1); | |
3251 | b->number = breakpoint_count; | |
3252 | } | |
3253 | } | |
3254 | ||
e62c965a | 3255 | static struct breakpoint * |
a6d9a66e | 3256 | create_internal_breakpoint (struct gdbarch *gdbarch, |
9efa3c7f | 3257 | CORE_ADDR address, enum bptype type) |
e62c965a | 3258 | { |
752a2291 PA |
3259 | std::unique_ptr<internal_breakpoint> b |
3260 | (new internal_breakpoint (gdbarch, type, address)); | |
e62c965a | 3261 | |
e62c965a | 3262 | b->number = internal_breakpoint_number--; |
e62c965a | 3263 | |
752a2291 | 3264 | return add_to_breakpoint_chain (std::move (b)); |
e62c965a PP |
3265 | } |
3266 | ||
17450429 PP |
3267 | static const char *const longjmp_names[] = |
3268 | { | |
3269 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3270 | }; | |
3271 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3272 | ||
3273 | /* Per-objfile data private to breakpoint.c. */ | |
3274 | struct breakpoint_objfile_data | |
3275 | { | |
3276 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
f6b3ad54 | 3277 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3278 | |
3279 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
f6b3ad54 | 3280 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3281 | |
28106bc2 | 3282 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3283 | int longjmp_searched = 0; |
28106bc2 | 3284 | |
45461e0d SM |
3285 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3286 | references. */ | |
3287 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3288 | |
17450429 | 3289 | /* Minimal symbol for "std::terminate()" (if any). */ |
f6b3ad54 | 3290 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3291 | |
3292 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
f6b3ad54 | 3293 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3294 | |
3295 | /* True if we have looked for exception probes. */ | |
43dce439 | 3296 | int exception_searched = 0; |
28106bc2 | 3297 | |
45461e0d SM |
3298 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3299 | references. */ | |
3300 | std::vector<probe *> exception_probes; | |
17450429 PP |
3301 | }; |
3302 | ||
51d3063a TT |
3303 | static const struct objfile_key<breakpoint_objfile_data> |
3304 | breakpoint_objfile_key; | |
17450429 PP |
3305 | |
3306 | /* Minimal symbol not found sentinel. */ | |
3307 | static struct minimal_symbol msym_not_found; | |
3308 | ||
3309 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3310 | ||
3311 | static int | |
3312 | msym_not_found_p (const struct minimal_symbol *msym) | |
3313 | { | |
3314 | return msym == &msym_not_found; | |
3315 | } | |
3316 | ||
3317 | /* Return per-objfile data needed by breakpoint.c. | |
3318 | Allocate the data if necessary. */ | |
3319 | ||
3320 | static struct breakpoint_objfile_data * | |
3321 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3322 | { | |
3323 | struct breakpoint_objfile_data *bp_objfile_data; | |
3324 | ||
51d3063a | 3325 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3326 | if (bp_objfile_data == NULL) |
51d3063a | 3327 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3328 | return bp_objfile_data; |
3329 | } | |
3330 | ||
e62c965a | 3331 | static void |
af02033e | 3332 | create_overlay_event_breakpoint (void) |
e62c965a | 3333 | { |
af02033e | 3334 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3335 | |
2030c079 | 3336 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3337 | { |
3338 | struct breakpoint *b; | |
17450429 PP |
3339 | struct breakpoint_objfile_data *bp_objfile_data; |
3340 | CORE_ADDR addr; | |
67994074 | 3341 | struct explicit_location explicit_loc; |
69de3c6a | 3342 | |
17450429 PP |
3343 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3344 | ||
3b7344d5 | 3345 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3346 | continue; |
3347 | ||
3b7344d5 | 3348 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3349 | { |
3b7344d5 | 3350 | struct bound_minimal_symbol m; |
17450429 PP |
3351 | |
3352 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3353 | if (m.minsym == NULL) |
17450429 PP |
3354 | { |
3355 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3356 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3357 | continue; |
3358 | } | |
3359 | bp_objfile_data->overlay_msym = m; | |
3360 | } | |
e62c965a | 3361 | |
4aeddc50 | 3362 | addr = bp_objfile_data->overlay_msym.value_address (); |
08feed99 | 3363 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3364 | bp_overlay_event); |
67994074 KS |
3365 | initialize_explicit_location (&explicit_loc); |
3366 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3367 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3368 | |
69de3c6a | 3369 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3370 | { |
3371 | b->enable_state = bp_enabled; | |
3372 | overlay_events_enabled = 1; | |
3373 | } | |
69de3c6a PP |
3374 | else |
3375 | { | |
dda83cd7 SM |
3376 | b->enable_state = bp_disabled; |
3377 | overlay_events_enabled = 0; | |
69de3c6a | 3378 | } |
e62c965a | 3379 | } |
e62c965a PP |
3380 | } |
3381 | ||
2a7f6487 TV |
3382 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3383 | true if a breakpoint was installed. */ | |
3384 | ||
3385 | static bool | |
3386 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3387 | { |
2a7f6487 TV |
3388 | struct gdbarch *gdbarch = objfile->arch (); |
3389 | struct breakpoint_objfile_data *bp_objfile_data | |
3390 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3391 | |
2a7f6487 | 3392 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3393 | { |
2a7f6487 TV |
3394 | std::vector<probe *> ret |
3395 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3396 | |
2a7f6487 | 3397 | if (!ret.empty ()) |
94c93c35 | 3398 | { |
2a7f6487 TV |
3399 | /* We are only interested in checking one element. */ |
3400 | probe *p = ret[0]; | |
0fd8e87f | 3401 | |
2a7f6487 TV |
3402 | if (!p->can_evaluate_arguments ()) |
3403 | { | |
3404 | /* We cannot use the probe interface here, | |
3405 | because it does not know how to evaluate | |
3406 | arguments. */ | |
3407 | ret.clear (); | |
3408 | } | |
3409 | } | |
3410 | bp_objfile_data->longjmp_probes = ret; | |
3411 | bp_objfile_data->longjmp_searched = 1; | |
3412 | } | |
0fd8e87f | 3413 | |
2a7f6487 TV |
3414 | if (bp_objfile_data->longjmp_probes.empty ()) |
3415 | return false; | |
17450429 | 3416 | |
2a7f6487 TV |
3417 | for (probe *p : bp_objfile_data->longjmp_probes) |
3418 | { | |
3419 | struct breakpoint *b; | |
25f9533e | 3420 | |
2a7f6487 TV |
3421 | b = create_internal_breakpoint (gdbarch, |
3422 | p->get_relocated_address (objfile), | |
9efa3c7f | 3423 | bp_longjmp_master); |
2a7f6487 TV |
3424 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
3425 | b->enable_state = bp_disabled; | |
3426 | } | |
aed57c53 | 3427 | |
2a7f6487 TV |
3428 | return true; |
3429 | } | |
25f9533e | 3430 | |
2a7f6487 TV |
3431 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3432 | Return true if at least one breakpoint was installed. */ | |
3433 | ||
3434 | static bool | |
3435 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3436 | { | |
3437 | struct gdbarch *gdbarch = objfile->arch (); | |
3438 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3439 | return false; | |
3440 | ||
3441 | struct breakpoint_objfile_data *bp_objfile_data | |
3442 | = get_breakpoint_objfile_data (objfile); | |
3443 | unsigned int installed_bp = 0; | |
3444 | ||
3445 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3446 | { | |
3447 | struct breakpoint *b; | |
3448 | const char *func_name; | |
3449 | CORE_ADDR addr; | |
3450 | struct explicit_location explicit_loc; | |
3451 | ||
3452 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3453 | continue; | |
28106bc2 | 3454 | |
2a7f6487 TV |
3455 | func_name = longjmp_names[i]; |
3456 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3457 | { | |
3458 | struct bound_minimal_symbol m; | |
3459 | ||
3460 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3461 | if (m.minsym == NULL) | |
3462 | { | |
3463 | /* Prevent future lookups in this objfile. */ | |
3464 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3465 | continue; |
3466 | } | |
2a7f6487 TV |
3467 | bp_objfile_data->longjmp_msym[i] = m; |
3468 | } | |
28106bc2 | 3469 | |
4aeddc50 | 3470 | addr = bp_objfile_data->longjmp_msym[i].value_address (); |
9efa3c7f | 3471 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master); |
2a7f6487 TV |
3472 | initialize_explicit_location (&explicit_loc); |
3473 | explicit_loc.function_name = ASTRDUP (func_name); | |
3474 | b->location = new_explicit_location (&explicit_loc); | |
3475 | b->enable_state = bp_disabled; | |
3476 | installed_bp++; | |
3477 | } | |
28106bc2 | 3478 | |
2a7f6487 TV |
3479 | return installed_bp > 0; |
3480 | } | |
0fd8e87f | 3481 | |
2a7f6487 | 3482 | /* Create a master longjmp breakpoint. */ |
17450429 | 3483 | |
2a7f6487 TV |
3484 | static void |
3485 | create_longjmp_master_breakpoint (void) | |
3486 | { | |
3487 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3488 | |
2a7f6487 TV |
3489 | for (struct program_space *pspace : program_spaces) |
3490 | { | |
3491 | set_current_program_space (pspace); | |
17450429 | 3492 | |
2a7f6487 TV |
3493 | for (objfile *obj : current_program_space->objfiles ()) |
3494 | { | |
3495 | /* Skip separate debug object, it's handled in the loop below. */ | |
3496 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3497 | continue; | |
3498 | ||
3499 | /* Try a probe kind breakpoint on main objfile. */ | |
3500 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3501 | continue; | |
3502 | ||
3503 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3504 | objfiles. */ | |
3505 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3506 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3507 | break; | |
94c93c35 TT |
3508 | } |
3509 | } | |
0fd8e87f UW |
3510 | } |
3511 | ||
af02033e | 3512 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3513 | static void |
af02033e | 3514 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3515 | { |
af02033e | 3516 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3517 | |
5ed8105e | 3518 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3519 | |
94c93c35 TT |
3520 | for (struct program_space *pspace : program_spaces) |
3521 | { | |
3522 | CORE_ADDR addr; | |
17450429 | 3523 | |
94c93c35 | 3524 | set_current_program_space (pspace); |
17450429 | 3525 | |
94c93c35 TT |
3526 | for (objfile *objfile : current_program_space->objfiles ()) |
3527 | { | |
3528 | struct breakpoint *b; | |
3529 | struct breakpoint_objfile_data *bp_objfile_data; | |
3530 | struct explicit_location explicit_loc; | |
aa7d318d | 3531 | |
94c93c35 | 3532 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3533 | |
94c93c35 TT |
3534 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3535 | continue; | |
17450429 | 3536 | |
94c93c35 TT |
3537 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3538 | { | |
3539 | struct bound_minimal_symbol m; | |
17450429 | 3540 | |
94c93c35 | 3541 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
60f62e2b SM |
3542 | if (m.minsym == NULL || (m.minsym->type () != mst_text |
3543 | && m.minsym->type () != mst_file_text)) | |
94c93c35 TT |
3544 | { |
3545 | /* Prevent future lookups in this objfile. */ | |
3546 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3547 | continue; | |
3548 | } | |
3549 | bp_objfile_data->terminate_msym = m; | |
3550 | } | |
aa7d318d | 3551 | |
4aeddc50 | 3552 | addr = bp_objfile_data->terminate_msym.value_address (); |
94c93c35 | 3553 | b = create_internal_breakpoint (objfile->arch (), addr, |
9efa3c7f | 3554 | bp_std_terminate_master); |
94c93c35 TT |
3555 | initialize_explicit_location (&explicit_loc); |
3556 | explicit_loc.function_name = ASTRDUP (func_name); | |
3557 | b->location = new_explicit_location (&explicit_loc); | |
3558 | b->enable_state = bp_disabled; | |
3559 | } | |
3560 | } | |
aa7d318d TT |
3561 | } |
3562 | ||
1940319c TV |
3563 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3564 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3565 | |
1940319c TV |
3566 | static bool |
3567 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3568 | { |
1940319c TV |
3569 | struct breakpoint *b; |
3570 | struct gdbarch *gdbarch; | |
3571 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3572 | |
1940319c | 3573 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3574 | |
1940319c TV |
3575 | /* We prefer the SystemTap probe point if it exists. */ |
3576 | if (!bp_objfile_data->exception_searched) | |
3577 | { | |
3578 | std::vector<probe *> ret | |
3579 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3580 | |
1940319c | 3581 | if (!ret.empty ()) |
28106bc2 | 3582 | { |
1940319c TV |
3583 | /* We are only interested in checking one element. */ |
3584 | probe *p = ret[0]; | |
25f9533e | 3585 | |
1940319c | 3586 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3587 | { |
1940319c TV |
3588 | /* We cannot use the probe interface here, because it does |
3589 | not know how to evaluate arguments. */ | |
3590 | ret.clear (); | |
25f9533e | 3591 | } |
28106bc2 | 3592 | } |
1940319c TV |
3593 | bp_objfile_data->exception_probes = ret; |
3594 | bp_objfile_data->exception_searched = 1; | |
3595 | } | |
28106bc2 | 3596 | |
1940319c TV |
3597 | if (bp_objfile_data->exception_probes.empty ()) |
3598 | return false; | |
45461e0d | 3599 | |
1940319c | 3600 | gdbarch = objfile->arch (); |
28106bc2 | 3601 | |
1940319c TV |
3602 | for (probe *p : bp_objfile_data->exception_probes) |
3603 | { | |
3604 | b = create_internal_breakpoint (gdbarch, | |
3605 | p->get_relocated_address (objfile), | |
9efa3c7f | 3606 | bp_exception_master); |
1940319c TV |
3607 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
3608 | b->enable_state = bp_disabled; | |
3609 | } | |
28106bc2 | 3610 | |
1940319c TV |
3611 | return true; |
3612 | } | |
28106bc2 | 3613 | |
1940319c TV |
3614 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3615 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3616 | |
1940319c TV |
3617 | static bool |
3618 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3619 | { | |
3620 | const char *const func_name = "_Unwind_DebugHook"; | |
3621 | struct breakpoint *b; | |
3622 | struct gdbarch *gdbarch; | |
3623 | struct breakpoint_objfile_data *bp_objfile_data; | |
3624 | CORE_ADDR addr; | |
3625 | struct explicit_location explicit_loc; | |
186c406b | 3626 | |
1940319c | 3627 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3628 | |
1940319c TV |
3629 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3630 | return false; | |
17450429 | 3631 | |
1940319c TV |
3632 | gdbarch = objfile->arch (); |
3633 | ||
3634 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3635 | { | |
3636 | struct bound_minimal_symbol debug_hook; | |
3637 | ||
3638 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3639 | if (debug_hook.minsym == NULL) | |
3640 | { | |
3641 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3642 | return false; | |
186c406b | 3643 | } |
17450429 | 3644 | |
1940319c TV |
3645 | bp_objfile_data->exception_msym = debug_hook; |
3646 | } | |
3647 | ||
4aeddc50 | 3648 | addr = bp_objfile_data->exception_msym.value_address (); |
328d42d8 SM |
3649 | addr = gdbarch_convert_from_func_ptr_addr |
3650 | (gdbarch, addr, current_inferior ()->top_target ()); | |
9efa3c7f | 3651 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master); |
1940319c TV |
3652 | initialize_explicit_location (&explicit_loc); |
3653 | explicit_loc.function_name = ASTRDUP (func_name); | |
3654 | b->location = new_explicit_location (&explicit_loc); | |
3655 | b->enable_state = bp_disabled; | |
3656 | ||
3657 | return true; | |
3658 | } | |
3659 | ||
3660 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3661 | ||
3662 | static void | |
3663 | create_exception_master_breakpoint (void) | |
3664 | { | |
3665 | for (objfile *obj : current_program_space->objfiles ()) | |
3666 | { | |
3667 | /* Skip separate debug object. */ | |
3668 | if (obj->separate_debug_objfile_backlink) | |
3669 | continue; | |
3670 | ||
3671 | /* Try a probe kind breakpoint. */ | |
3672 | if (create_exception_master_breakpoint_probe (obj)) | |
3673 | continue; | |
3674 | ||
7c6944ab TV |
3675 | /* Iterate over main and separate debug objects and try an |
3676 | _Unwind_DebugHook kind breakpoint. */ | |
3677 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3678 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3679 | break; |
186c406b | 3680 | } |
186c406b TT |
3681 | } |
3682 | ||
9ef9e6a6 KS |
3683 | /* Does B have a location spec? */ |
3684 | ||
3685 | static int | |
3686 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3687 | { | |
d28cd78a | 3688 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3689 | } |
3690 | ||
c906108c | 3691 | void |
fba45db2 | 3692 | update_breakpoints_after_exec (void) |
c906108c | 3693 | { |
25b22b0a PA |
3694 | /* We're about to delete breakpoints from GDB's lists. If the |
3695 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3696 | writing the breakpoints' "shadow contents" back into memory. The | |
3697 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3698 | do that. Instead, the target is responsible from marking | |
3699 | breakpoints out as soon as it detects an exec. We don't do that | |
3700 | here instead, because there may be other attempts to delete | |
3701 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3702 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3703 | if (bploc->pspace == current_program_space) |
3704 | gdb_assert (!bploc->inserted); | |
c906108c | 3705 | |
1428b37a | 3706 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3707 | { |
3708 | if (b->pspace != current_program_space) | |
c5aa993b | 3709 | continue; |
c906108c | 3710 | |
01add95b SM |
3711 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3712 | if (b->type == bp_shlib_event) | |
3713 | { | |
3714 | delete_breakpoint (b); | |
3715 | continue; | |
3716 | } | |
4efc6507 | 3717 | |
01add95b SM |
3718 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3719 | if (b->type == bp_jit_event) | |
3720 | { | |
3721 | delete_breakpoint (b); | |
3722 | continue; | |
3723 | } | |
c4093a6a | 3724 | |
01add95b SM |
3725 | /* Thread event breakpoints must be set anew after an exec(), |
3726 | as must overlay event and longjmp master breakpoints. */ | |
3727 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3728 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3729 | || b->type == bp_exception_master) | |
3730 | { | |
3731 | delete_breakpoint (b); | |
3732 | continue; | |
3733 | } | |
c5aa993b | 3734 | |
01add95b SM |
3735 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3736 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3737 | { | |
3738 | delete_breakpoint (b); | |
3739 | continue; | |
3740 | } | |
7c16b83e | 3741 | |
01add95b SM |
3742 | /* Just like single-step breakpoints. */ |
3743 | if (b->type == bp_single_step) | |
3744 | { | |
3745 | delete_breakpoint (b); | |
3746 | continue; | |
3747 | } | |
611c83ae | 3748 | |
01add95b SM |
3749 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3750 | after an exec. */ | |
3751 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3752 | || b->type == bp_longjmp_call_dummy | |
3753 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3754 | { | |
3755 | delete_breakpoint (b); | |
3756 | continue; | |
3757 | } | |
ce78b96d | 3758 | |
01add95b SM |
3759 | if (b->type == bp_catchpoint) |
3760 | { | |
3761 | /* For now, none of the bp_catchpoint breakpoints need to | |
3762 | do anything at this point. In the future, if some of | |
3763 | the catchpoints need to something, we will need to add | |
3764 | a new method, and call this method from here. */ | |
3765 | continue; | |
3766 | } | |
c5aa993b | 3767 | |
01add95b SM |
3768 | /* bp_finish is a special case. The only way we ought to be able |
3769 | to see one of these when an exec() has happened, is if the user | |
3770 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3771 | carries them to the call-site of the current callee, by setting | |
3772 | a temporary bp there and resuming. But in this case, the finish | |
3773 | will carry them entirely through the vfork & exec. | |
3774 | ||
3775 | We don't want to allow a bp_finish to remain inserted now. But | |
3776 | we can't safely delete it, 'cause finish_command has a handle to | |
3777 | the bp on a bpstat, and will later want to delete it. There's a | |
3778 | chance (and I've seen it happen) that if we delete the bp_finish | |
3779 | here, that its storage will get reused by the time finish_command | |
3780 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3781 | We really must allow finish_command to delete a bp_finish. | |
3782 | ||
3783 | In the absence of a general solution for the "how do we know | |
3784 | it's safe to delete something others may have handles to?" | |
3785 | problem, what we'll do here is just uninsert the bp_finish, and | |
3786 | let finish_command delete it. | |
3787 | ||
3788 | (We know the bp_finish is "doomed" in the sense that it's | |
3789 | momentary, and will be deleted as soon as finish_command sees | |
3790 | the inferior stopped. So it doesn't matter that the bp's | |
3791 | address is probably bogus in the new a.out, unlike e.g., the | |
3792 | solib breakpoints.) */ | |
3793 | ||
3794 | if (b->type == bp_finish) | |
3795 | { | |
3796 | continue; | |
3797 | } | |
3798 | ||
3799 | /* Without a symbolic address, we have little hope of the | |
3800 | pre-exec() address meaning the same thing in the post-exec() | |
3801 | a.out. */ | |
3802 | if (breakpoint_event_location_empty_p (b)) | |
3803 | { | |
3804 | delete_breakpoint (b); | |
3805 | continue; | |
3806 | } | |
3807 | } | |
c906108c SS |
3808 | } |
3809 | ||
3810 | int | |
d80ee84f | 3811 | detach_breakpoints (ptid_t ptid) |
c906108c | 3812 | { |
3a1bae8e | 3813 | int val = 0; |
2989a365 | 3814 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3815 | struct inferior *inf = current_inferior (); |
c5aa993b | 3816 | |
e99b03dc | 3817 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3818 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3819 | |
6c95b8df | 3820 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3821 | inferior_ptid = ptid; |
48d7020b | 3822 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3823 | { |
3824 | if (bl->pspace != inf->pspace) | |
3825 | continue; | |
3826 | ||
3827 | /* This function must physically remove breakpoints locations | |
3828 | from the specified ptid, without modifying the breakpoint | |
6e14e441 PA |
3829 | package's state. Locations of type bp_loc_other and |
3830 | bp_loc_software_watchpoint are only maintained at GDB side, | |
3831 | so there is no need to remove them. Moreover, removing these | |
01add95b | 3832 | would modify the breakpoint package's state. */ |
6e14e441 PA |
3833 | if (bl->loc_type == bp_loc_other |
3834 | || bl->loc_type == bp_loc_software_watchpoint) | |
01add95b SM |
3835 | continue; |
3836 | ||
3837 | if (bl->inserted) | |
3838 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3839 | } | |
d03285ec | 3840 | |
3a1bae8e | 3841 | return val; |
c906108c SS |
3842 | } |
3843 | ||
35df4500 | 3844 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3845 | Note that this is used to detach breakpoints from a child fork. |
3846 | When we get here, the child isn't in the inferior list, and neither | |
3847 | do we have objects to represent its address space --- we should | |
35df4500 | 3848 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3849 | |
c906108c | 3850 | static int |
b2b6a7da | 3851 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3852 | { |
3853 | int val; | |
c5aa993b | 3854 | |
35df4500 TJB |
3855 | /* BL is never in moribund_locations by our callers. */ |
3856 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3857 | |
74960c60 VP |
3858 | /* The type of none suggests that owner is actually deleted. |
3859 | This should not ever happen. */ | |
35df4500 | 3860 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3861 | |
35df4500 TJB |
3862 | if (bl->loc_type == bp_loc_software_breakpoint |
3863 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3864 | { |
c02f5703 MS |
3865 | /* "Normal" instruction breakpoint: either the standard |
3866 | trap-instruction bp (bp_breakpoint), or a | |
3867 | bp_hardware_breakpoint. */ | |
3868 | ||
3869 | /* First check to see if we have to handle an overlay. */ | |
3870 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3871 | || bl->section == NULL |
3872 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3873 | { |
3874 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3875 | |
3876 | /* If we're trying to uninsert a memory breakpoint that we | |
3877 | know is set in a dynamic object that is marked | |
3878 | shlib_disabled, then either the dynamic object was | |
3879 | removed with "remove-symbol-file" or with | |
3880 | "nosharedlibrary". In the former case, we don't know | |
3881 | whether another dynamic object might have loaded over the | |
3882 | breakpoint's address -- the user might well let us know | |
3883 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3884 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3885 | list of dynamically loaded objects). If we have the |
3886 | breakpoint's shadow memory, that is, this is a software | |
3887 | breakpoint managed by GDB, check whether the breakpoint | |
3888 | is still inserted in memory, to avoid overwriting wrong | |
3889 | code with stale saved shadow contents. Note that HW | |
3890 | breakpoints don't have shadow memory, as they're | |
3891 | implemented using a mechanism that is not dependent on | |
3892 | being able to modify the target's memory, and as such | |
3893 | they should always be removed. */ | |
3894 | if (bl->shlib_disabled | |
3895 | && bl->target_info.shadow_len != 0 | |
3896 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3897 | val = 0; | |
3898 | else | |
c47614fe | 3899 | val = bl->owner->remove_location (bl, reason); |
c02f5703 | 3900 | } |
c906108c SS |
3901 | else |
3902 | { | |
4a64f543 | 3903 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3904 | Did we set a breakpoint at the LMA? */ |
3905 | if (!overlay_events_enabled) | |
3906 | { | |
3907 | /* Yes -- overlay event support is not active, so we | |
3908 | should have set a breakpoint at the LMA. Remove it. | |
3909 | */ | |
c02f5703 MS |
3910 | /* Ignore any failures: if the LMA is in ROM, we will |
3911 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3912 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3913 | target_remove_hw_breakpoint (bl->gdbarch, | |
3914 | &bl->overlay_target_info); | |
c02f5703 | 3915 | else |
35df4500 | 3916 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3917 | &bl->overlay_target_info, |
3918 | reason); | |
c02f5703 MS |
3919 | } |
3920 | /* Did we set a breakpoint at the VMA? | |
3921 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3922 | if (bl->inserted) |
c906108c | 3923 | { |
c02f5703 MS |
3924 | /* Yes -- remove it. Previously we did not bother to |
3925 | remove the breakpoint if the section had been | |
3926 | unmapped, but let's not rely on that being safe. We | |
3927 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3928 | |
3929 | /* However, we should remove *software* breakpoints only | |
3930 | if the section is still mapped, or else we overwrite | |
3931 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3932 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3933 | || section_is_mapped (bl->section)) | |
c47614fe | 3934 | val = bl->owner->remove_location (bl, reason); |
aa67235e UW |
3935 | else |
3936 | val = 0; | |
c906108c | 3937 | } |
c02f5703 MS |
3938 | else |
3939 | { | |
3940 | /* No -- not inserted, so no need to remove. No error. */ | |
3941 | val = 0; | |
3942 | } | |
c906108c | 3943 | } |
879d1e6b | 3944 | |
08351840 PA |
3945 | /* In some cases, we might not be able to remove a breakpoint in |
3946 | a shared library that has already been removed, but we have | |
3947 | not yet processed the shlib unload event. Similarly for an | |
3948 | unloaded add-symbol-file object - the user might not yet have | |
3949 | had the chance to remove-symbol-file it. shlib_disabled will | |
3950 | be set if the library/object has already been removed, but | |
3951 | the breakpoint hasn't been uninserted yet, e.g., after | |
3952 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3953 | always-inserted mode. */ | |
076855f9 | 3954 | if (val |
08351840 PA |
3955 | && (bl->loc_type == bp_loc_software_breakpoint |
3956 | && (bl->shlib_disabled | |
3957 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3958 | || shared_objfile_contains_address_p (bl->pspace, |
3959 | bl->address)))) | |
879d1e6b UW |
3960 | val = 0; |
3961 | ||
c906108c SS |
3962 | if (val) |
3963 | return val; | |
b2b6a7da | 3964 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3965 | } |
35df4500 | 3966 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3967 | { |
b2b6a7da | 3968 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c47614fe | 3969 | bl->owner->remove_location (bl, reason); |
2e70b7b9 | 3970 | |
c906108c | 3971 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3972 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3973 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3974 | bl->owner->number); |
c906108c | 3975 | } |
35df4500 | 3976 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3977 | && breakpoint_enabled (bl->owner) |
3978 | && !bl->duplicate) | |
ce78b96d | 3979 | { |
c47614fe | 3980 | val = bl->owner->remove_location (bl, reason); |
ce78b96d JB |
3981 | if (val) |
3982 | return val; | |
77b06cd7 | 3983 | |
b2b6a7da | 3984 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3985 | } |
c906108c SS |
3986 | |
3987 | return 0; | |
3988 | } | |
3989 | ||
6c95b8df | 3990 | static int |
834c0d03 | 3991 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3992 | { |
35df4500 TJB |
3993 | /* BL is never in moribund_locations by our callers. */ |
3994 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3995 | |
6c95b8df PA |
3996 | /* The type of none suggests that owner is actually deleted. |
3997 | This should not ever happen. */ | |
35df4500 | 3998 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3999 | |
5ed8105e | 4000 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 4001 | |
35df4500 | 4002 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4003 | |
5ed8105e | 4004 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
4005 | } |
4006 | ||
c906108c SS |
4007 | /* Clear the "inserted" flag in all breakpoints. */ |
4008 | ||
25b22b0a | 4009 | void |
fba45db2 | 4010 | mark_breakpoints_out (void) |
c906108c | 4011 | { |
48d7020b | 4012 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 4013 | if (bl->pspace == current_program_space) |
35df4500 | 4014 | bl->inserted = 0; |
c906108c SS |
4015 | } |
4016 | ||
53a5351d JM |
4017 | /* Clear the "inserted" flag in all breakpoints and delete any |
4018 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4019 | |
4020 | Plus other such housekeeping that has to be done for breakpoints | |
4021 | between runs. | |
4022 | ||
53a5351d JM |
4023 | Note: this function gets called at the end of a run (by |
4024 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4025 | init_wait_for_inferior). */ |
c906108c SS |
4026 | |
4027 | ||
4028 | ||
4029 | void | |
fba45db2 | 4030 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4031 | { |
6c95b8df | 4032 | struct program_space *pspace = current_program_space; |
c906108c | 4033 | |
50c71eaf PA |
4034 | /* If breakpoint locations are shared across processes, then there's |
4035 | nothing to do. */ | |
f5656ead | 4036 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4037 | return; |
4038 | ||
1a853c52 | 4039 | mark_breakpoints_out (); |
075f6582 | 4040 | |
1428b37a | 4041 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
4042 | { |
4043 | if (b->loc && b->loc->pspace != pspace) | |
4044 | continue; | |
6c95b8df | 4045 | |
01add95b SM |
4046 | switch (b->type) |
4047 | { | |
4048 | case bp_call_dummy: | |
4049 | case bp_longjmp_call_dummy: | |
c906108c | 4050 | |
01add95b SM |
4051 | /* If the call dummy breakpoint is at the entry point it will |
4052 | cause problems when the inferior is rerun, so we better get | |
4053 | rid of it. */ | |
ab92d69b | 4054 | |
01add95b | 4055 | case bp_watchpoint_scope: |
ab92d69b | 4056 | |
01add95b | 4057 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 4058 | |
01add95b | 4059 | case bp_shlib_event: |
ab92d69b | 4060 | |
01add95b SM |
4061 | /* Also remove solib event breakpoints. Their addresses may |
4062 | have changed since the last time we ran the program. | |
4063 | Actually we may now be debugging against different target; | |
4064 | and so the solib backend that installed this breakpoint may | |
4065 | not be used in by the target. E.g., | |
ab92d69b | 4066 | |
01add95b SM |
4067 | (gdb) file prog-linux |
4068 | (gdb) run # native linux target | |
4069 | ... | |
4070 | (gdb) kill | |
4071 | (gdb) file prog-win.exe | |
4072 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4073 | */ | |
c906108c | 4074 | |
01add95b | 4075 | case bp_step_resume: |
f59f708a | 4076 | |
01add95b | 4077 | /* Also remove step-resume breakpoints. */ |
f59f708a | 4078 | |
01add95b | 4079 | case bp_single_step: |
7c16b83e | 4080 | |
01add95b | 4081 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4082 | |
01add95b SM |
4083 | delete_breakpoint (b); |
4084 | break; | |
c906108c | 4085 | |
01add95b SM |
4086 | case bp_watchpoint: |
4087 | case bp_hardware_watchpoint: | |
4088 | case bp_read_watchpoint: | |
4089 | case bp_access_watchpoint: | |
4090 | { | |
4091 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4092 | |
01add95b SM |
4093 | /* Likewise for watchpoints on local expressions. */ |
4094 | if (w->exp_valid_block != NULL) | |
4095 | delete_breakpoint (b); | |
4096 | else | |
4097 | { | |
4098 | /* Get rid of existing locations, which are no longer | |
4099 | valid. New ones will be created in | |
4100 | update_watchpoint, when the inferior is restarted. | |
4101 | The next update_global_location_list call will | |
4102 | garbage collect them. */ | |
4103 | b->loc = NULL; | |
4104 | ||
4105 | if (context == inf_starting) | |
4106 | { | |
4107 | /* Reset val field to force reread of starting value in | |
4108 | insert_breakpoints. */ | |
4109 | w->val.reset (nullptr); | |
4110 | w->val_valid = false; | |
4111 | } | |
4112 | } | |
4113 | } | |
4114 | break; | |
4115 | default: | |
4116 | break; | |
3a5c3e22 | 4117 | } |
01add95b | 4118 | } |
1c5cfe86 PA |
4119 | |
4120 | /* Get rid of the moribund locations. */ | |
1123588c | 4121 | for (bp_location *bl : moribund_locations) |
35df4500 | 4122 | decref_bp_location (&bl); |
1123588c | 4123 | moribund_locations.clear (); |
c906108c SS |
4124 | } |
4125 | ||
6c95b8df PA |
4126 | /* These functions concern about actual breakpoints inserted in the |
4127 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4128 | we need to hop over the bkpt --- so we check for address space | |
4129 | match, not program space. */ | |
4130 | ||
c2c6d25f JM |
4131 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4132 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4133 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4134 | permanent breakpoint. | |
4135 | - When continuing from a location with an ordinary breakpoint, we | |
4136 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4137 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4138 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4139 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4140 | |
c2c6d25f | 4141 | enum breakpoint_here |
accd0bcd | 4142 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4143 | { |
c2c6d25f | 4144 | int any_breakpoint_here = 0; |
c906108c | 4145 | |
48d7020b | 4146 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4147 | { |
35df4500 TJB |
4148 | if (bl->loc_type != bp_loc_software_breakpoint |
4149 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4150 | continue; |
4151 | ||
f1310107 | 4152 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4153 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4154 | || bl->permanent) |
f1310107 | 4155 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4156 | { |
4157 | if (overlay_debugging | |
35df4500 TJB |
4158 | && section_is_overlay (bl->section) |
4159 | && !section_is_mapped (bl->section)) | |
075f6582 | 4160 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4161 | else if (bl->permanent) |
075f6582 DJ |
4162 | return permanent_breakpoint_here; |
4163 | else | |
4164 | any_breakpoint_here = 1; | |
4165 | } | |
4166 | } | |
c906108c | 4167 | |
f486487f | 4168 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4169 | } |
4170 | ||
d35ae833 PA |
4171 | /* See breakpoint.h. */ |
4172 | ||
4173 | int | |
accd0bcd | 4174 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4175 | CORE_ADDR addr, ULONGEST len) |
4176 | { | |
48d7020b | 4177 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4178 | { |
4179 | if (bl->loc_type != bp_loc_software_breakpoint | |
4180 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4181 | continue; | |
4182 | ||
4183 | if ((breakpoint_enabled (bl->owner) | |
4184 | || bl->permanent) | |
4185 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4186 | addr, len)) | |
4187 | { | |
4188 | if (overlay_debugging | |
4189 | && section_is_overlay (bl->section) | |
4190 | && !section_is_mapped (bl->section)) | |
4191 | { | |
4192 | /* Unmapped overlay -- can't be a match. */ | |
4193 | continue; | |
4194 | } | |
4195 | ||
4196 | return 1; | |
4197 | } | |
4198 | } | |
4199 | ||
4200 | return 0; | |
4201 | } | |
4202 | ||
1c5cfe86 PA |
4203 | /* Return true if there's a moribund breakpoint at PC. */ |
4204 | ||
4205 | int | |
accd0bcd | 4206 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4207 | { |
1123588c | 4208 | for (bp_location *loc : moribund_locations) |
f1310107 | 4209 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4210 | return 1; |
4211 | ||
4212 | return 0; | |
4213 | } | |
c2c6d25f | 4214 | |
f7ce857f PA |
4215 | /* Returns non-zero iff BL is inserted at PC, in address space |
4216 | ASPACE. */ | |
4217 | ||
4218 | static int | |
4219 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4220 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4221 | { |
4222 | if (bl->inserted | |
4223 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4224 | aspace, pc)) | |
4225 | { | |
4226 | if (overlay_debugging | |
4227 | && section_is_overlay (bl->section) | |
4228 | && !section_is_mapped (bl->section)) | |
4229 | return 0; /* unmapped overlay -- can't be a match */ | |
4230 | else | |
4231 | return 1; | |
4232 | } | |
4233 | return 0; | |
4234 | } | |
4235 | ||
a1fd2fa5 | 4236 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4237 | |
4238 | int | |
accd0bcd | 4239 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4240 | { |
e0d9a270 | 4241 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4242 | { |
35df4500 TJB |
4243 | if (bl->loc_type != bp_loc_software_breakpoint |
4244 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4245 | continue; |
4246 | ||
f7ce857f PA |
4247 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4248 | return 1; | |
c5aa993b | 4249 | } |
c36b740a VP |
4250 | return 0; |
4251 | } | |
4252 | ||
a1fd2fa5 PA |
4253 | /* This function returns non-zero iff there is a software breakpoint |
4254 | inserted at PC. */ | |
c36b740a VP |
4255 | |
4256 | int | |
accd0bcd | 4257 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4258 | CORE_ADDR pc) |
4fa8626c | 4259 | { |
e0d9a270 | 4260 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4261 | { |
35df4500 | 4262 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4263 | continue; |
4264 | ||
f7ce857f PA |
4265 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4266 | return 1; | |
4fa8626c DJ |
4267 | } |
4268 | ||
4269 | return 0; | |
9c02b525 PA |
4270 | } |
4271 | ||
4272 | /* See breakpoint.h. */ | |
4273 | ||
4274 | int | |
accd0bcd | 4275 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4276 | CORE_ADDR pc) |
4277 | { | |
e0d9a270 | 4278 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4279 | { |
9c02b525 PA |
4280 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4281 | continue; | |
4282 | ||
4283 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4284 | return 1; | |
4285 | } | |
4286 | ||
4287 | return 0; | |
4fa8626c DJ |
4288 | } |
4289 | ||
9093389c | 4290 | int |
accd0bcd | 4291 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4292 | CORE_ADDR addr, ULONGEST len) |
4293 | { | |
43892fdf | 4294 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4295 | { |
9093389c PA |
4296 | if (bpt->type != bp_hardware_watchpoint |
4297 | && bpt->type != bp_access_watchpoint) | |
4298 | continue; | |
4299 | ||
4300 | if (!breakpoint_enabled (bpt)) | |
4301 | continue; | |
4302 | ||
40cb8ca5 | 4303 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4304 | if (loc->pspace->aspace == aspace && loc->inserted) |
4305 | { | |
4306 | CORE_ADDR l, h; | |
4307 | ||
4308 | /* Check for intersection. */ | |
768adc05 PA |
4309 | l = std::max<CORE_ADDR> (loc->address, addr); |
4310 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4311 | if (l < h) |
4312 | return 1; | |
4313 | } | |
4314 | } | |
4315 | return 0; | |
4316 | } | |
c5aa993b | 4317 | |
f2478a7e | 4318 | /* See breakpoint.h. */ |
c906108c | 4319 | |
f2478a7e SM |
4320 | bool |
4321 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4322 | { |
f2478a7e | 4323 | return (b->type == bp_catchpoint); |
c906108c SS |
4324 | } |
4325 | ||
c906108c SS |
4326 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4327 | Also free any storage that is part of a bpstat. */ | |
4328 | ||
4329 | void | |
313f3b21 | 4330 | bpstat_clear (bpstat **bsp) |
c906108c | 4331 | { |
313f3b21 SM |
4332 | bpstat *p; |
4333 | bpstat *q; | |
c906108c SS |
4334 | |
4335 | if (bsp == 0) | |
4336 | return; | |
4337 | p = *bsp; | |
4338 | while (p != NULL) | |
4339 | { | |
4340 | q = p->next; | |
04afa70c | 4341 | delete p; |
c906108c SS |
4342 | p = q; |
4343 | } | |
4344 | *bsp = NULL; | |
4345 | } | |
4346 | ||
313f3b21 | 4347 | bpstat::bpstat (const bpstat &other) |
04afa70c TT |
4348 | : next (NULL), |
4349 | bp_location_at (other.bp_location_at), | |
4350 | breakpoint_at (other.breakpoint_at), | |
4351 | commands (other.commands), | |
04afa70c TT |
4352 | print (other.print), |
4353 | stop (other.stop), | |
4354 | print_it (other.print_it) | |
4355 | { | |
850645cf TT |
4356 | if (other.old_val != NULL) |
4357 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4358 | } |
4359 | ||
c906108c SS |
4360 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4361 | is part of the bpstat is copied as well. */ | |
4362 | ||
313f3b21 SM |
4363 | bpstat * |
4364 | bpstat_copy (bpstat *bs) | |
c906108c | 4365 | { |
313f3b21 SM |
4366 | bpstat *p = nullptr; |
4367 | bpstat *tmp; | |
4368 | bpstat *retval = nullptr; | |
c906108c SS |
4369 | |
4370 | if (bs == NULL) | |
4371 | return bs; | |
4372 | ||
4373 | for (; bs != NULL; bs = bs->next) | |
4374 | { | |
313f3b21 | 4375 | tmp = new bpstat (*bs); |
31cc81e9 | 4376 | |
c906108c SS |
4377 | if (p == NULL) |
4378 | /* This is the first thing in the chain. */ | |
4379 | retval = tmp; | |
4380 | else | |
4381 | p->next = tmp; | |
4382 | p = tmp; | |
4383 | } | |
4384 | p->next = NULL; | |
4385 | return retval; | |
4386 | } | |
4387 | ||
4a64f543 | 4388 | /* Find the bpstat associated with this breakpoint. */ |
c906108c | 4389 | |
313f3b21 SM |
4390 | bpstat * |
4391 | bpstat_find_breakpoint (bpstat *bsp, struct breakpoint *breakpoint) | |
c906108c | 4392 | { |
c5aa993b JM |
4393 | if (bsp == NULL) |
4394 | return NULL; | |
c906108c | 4395 | |
c5aa993b JM |
4396 | for (; bsp != NULL; bsp = bsp->next) |
4397 | { | |
f431efe5 | 4398 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4399 | return bsp; |
4400 | } | |
c906108c SS |
4401 | return NULL; |
4402 | } | |
4403 | ||
ab04a2af TT |
4404 | /* See breakpoint.h. */ |
4405 | ||
4c462cb0 | 4406 | bool |
313f3b21 | 4407 | bpstat_explains_signal (bpstat *bsp, enum gdb_signal sig) |
ab04a2af | 4408 | { |
ab04a2af TT |
4409 | for (; bsp != NULL; bsp = bsp->next) |
4410 | { | |
427cd150 TT |
4411 | if (bsp->breakpoint_at == NULL) |
4412 | { | |
4413 | /* A moribund location can never explain a signal other than | |
4414 | GDB_SIGNAL_TRAP. */ | |
4415 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4416 | return true; |
427cd150 TT |
4417 | } |
4418 | else | |
47591c29 | 4419 | { |
c47614fe | 4420 | if (bsp->breakpoint_at->explains_signal (sig)) |
4c462cb0 | 4421 | return true; |
47591c29 | 4422 | } |
ab04a2af TT |
4423 | } |
4424 | ||
4c462cb0 | 4425 | return false; |
ab04a2af TT |
4426 | } |
4427 | ||
4a64f543 MS |
4428 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4429 | stopped at. *BSP upon return is a bpstat which points to the | |
4430 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4431 | good for anything but further calls to bpstat_num). | |
4432 | ||
8671a17b PA |
4433 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4434 | Return -1 if stopped at a breakpoint that has been deleted since | |
4435 | we set it. | |
4436 | Return 1 otherwise. */ | |
c906108c SS |
4437 | |
4438 | int | |
313f3b21 | 4439 | bpstat_num (bpstat **bsp, int *num) |
c906108c SS |
4440 | { |
4441 | struct breakpoint *b; | |
4442 | ||
4443 | if ((*bsp) == NULL) | |
4444 | return 0; /* No more breakpoint values */ | |
8671a17b | 4445 | |
4a64f543 MS |
4446 | /* We assume we'll never have several bpstats that correspond to a |
4447 | single breakpoint -- otherwise, this function might return the | |
4448 | same number more than once and this will look ugly. */ | |
f431efe5 | 4449 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4450 | *bsp = (*bsp)->next; |
4451 | if (b == NULL) | |
4452 | return -1; /* breakpoint that's been deleted since */ | |
4453 | ||
4454 | *num = b->number; /* We have its number */ | |
4455 | return 1; | |
c906108c SS |
4456 | } |
4457 | ||
e93ca019 | 4458 | /* See breakpoint.h. */ |
c906108c SS |
4459 | |
4460 | void | |
e93ca019 | 4461 | bpstat_clear_actions (void) |
c906108c | 4462 | { |
313f3b21 | 4463 | bpstat *bs; |
e93ca019 | 4464 | |
00431a78 | 4465 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4466 | return; |
4467 | ||
00431a78 | 4468 | thread_info *tp = inferior_thread (); |
e93ca019 | 4469 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4470 | { |
d1b0a7bf | 4471 | bs->commands = NULL; |
850645cf | 4472 | bs->old_val.reset (nullptr); |
c906108c SS |
4473 | } |
4474 | } | |
4475 | ||
f3b1572e PA |
4476 | /* Called when a command is about to proceed the inferior. */ |
4477 | ||
4478 | static void | |
4479 | breakpoint_about_to_proceed (void) | |
4480 | { | |
d7e15655 | 4481 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4482 | { |
4483 | struct thread_info *tp = inferior_thread (); | |
4484 | ||
4485 | /* Allow inferior function calls in breakpoint commands to not | |
4486 | interrupt the command list. When the call finishes | |
4487 | successfully, the inferior will be standing at the same | |
4488 | breakpoint as if nothing happened. */ | |
16c381f0 | 4489 | if (tp->control.in_infcall) |
f3b1572e PA |
4490 | return; |
4491 | } | |
4492 | ||
4493 | breakpoint_proceeded = 1; | |
4494 | } | |
4495 | ||
abf85f46 JK |
4496 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4497 | or its equivalent. */ | |
4498 | ||
4499 | static int | |
4500 | command_line_is_silent (struct command_line *cmd) | |
4501 | { | |
4f45d445 | 4502 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4503 | } |
4504 | ||
4a64f543 MS |
4505 | /* Execute all the commands associated with all the breakpoints at |
4506 | this location. Any of these commands could cause the process to | |
4507 | proceed beyond this point, etc. We look out for such changes by | |
4508 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4509 | |
347bddb7 PA |
4510 | Returns true if a breakpoint command resumed the inferior. In that |
4511 | case, it is the caller's responsibility to recall it again with the | |
4512 | bpstat of the current thread. */ | |
4513 | ||
4514 | static int | |
313f3b21 | 4515 | bpstat_do_actions_1 (bpstat **bsp) |
c906108c | 4516 | { |
313f3b21 | 4517 | bpstat *bs; |
347bddb7 | 4518 | int again = 0; |
c906108c SS |
4519 | |
4520 | /* Avoid endless recursion if a `source' command is contained | |
4521 | in bs->commands. */ | |
4522 | if (executing_breakpoint_commands) | |
347bddb7 | 4523 | return 0; |
c906108c | 4524 | |
81b1e71c TT |
4525 | scoped_restore save_executing |
4526 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4527 | |
1ac32117 | 4528 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4529 | |
4a64f543 | 4530 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4531 | bs = *bsp; |
4532 | ||
4533 | breakpoint_proceeded = 0; | |
4534 | for (; bs != NULL; bs = bs->next) | |
4535 | { | |
d1b0a7bf | 4536 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4537 | |
4538 | /* Take ownership of the BSP's command tree, if it has one. | |
4539 | ||
dda83cd7 SM |
4540 | The command tree could legitimately contain commands like |
4541 | 'step' and 'next', which call clear_proceed_status, which | |
4542 | frees stop_bpstat's command tree. To make sure this doesn't | |
4543 | free the tree we're executing out from under us, we need to | |
4544 | take ownership of the tree ourselves. Since a given bpstat's | |
4545 | commands are only executed once, we don't need to copy it; we | |
4546 | can clear the pointer in the bpstat, and make sure we free | |
4547 | the tree when we're done. */ | |
d1b0a7bf | 4548 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4549 | bs->commands = NULL; |
d1b0a7bf TT |
4550 | if (ccmd != NULL) |
4551 | cmd = ccmd.get (); | |
abf85f46 JK |
4552 | if (command_line_is_silent (cmd)) |
4553 | { | |
4554 | /* The action has been already done by bpstat_stop_status. */ | |
4555 | cmd = cmd->next; | |
4556 | } | |
6c50ab1c | 4557 | |
c906108c SS |
4558 | while (cmd != NULL) |
4559 | { | |
4560 | execute_control_command (cmd); | |
4561 | ||
4562 | if (breakpoint_proceeded) | |
4563 | break; | |
4564 | else | |
4565 | cmd = cmd->next; | |
4566 | } | |
6c50ab1c | 4567 | |
c906108c | 4568 | if (breakpoint_proceeded) |
32c1e744 | 4569 | { |
cb814510 | 4570 | if (current_ui->async) |
347bddb7 PA |
4571 | /* If we are in async mode, then the target might be still |
4572 | running, not stopped at any breakpoint, so nothing for | |
4573 | us to do here -- just return to the event loop. */ | |
4574 | ; | |
32c1e744 VP |
4575 | else |
4576 | /* In sync mode, when execute_control_command returns | |
4577 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4578 | Breakpoint commands for that stop were not run, since |
4579 | execute_command does not run breakpoint commands -- | |
4580 | only command_line_handler does, but that one is not | |
4581 | involved in execution of breakpoint commands. So, we | |
4582 | can now execute breakpoint commands. It should be | |
4583 | noted that making execute_command do bpstat actions is | |
4584 | not an option -- in this case we'll have recursive | |
4585 | invocation of bpstat for each breakpoint with a | |
4586 | command, and can easily blow up GDB stack. Instead, we | |
4587 | return true, which will trigger the caller to recall us | |
4588 | with the new stop_bpstat. */ | |
4589 | again = 1; | |
4590 | break; | |
32c1e744 | 4591 | } |
c906108c | 4592 | } |
347bddb7 PA |
4593 | return again; |
4594 | } | |
4595 | ||
00431a78 PA |
4596 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4597 | one, is alive and has execution. Return NULL otherwise. */ | |
4598 | ||
4599 | static thread_info * | |
4600 | get_bpstat_thread () | |
4601 | { | |
55f6301a | 4602 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4603 | return NULL; |
4604 | ||
4605 | thread_info *tp = inferior_thread (); | |
611841bb | 4606 | if (tp->state == THREAD_EXITED || tp->executing ()) |
00431a78 PA |
4607 | return NULL; |
4608 | return tp; | |
4609 | } | |
4610 | ||
347bddb7 PA |
4611 | void |
4612 | bpstat_do_actions (void) | |
4613 | { | |
694c6bf5 | 4614 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4615 | thread_info *tp; |
353d1d73 | 4616 | |
347bddb7 | 4617 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4618 | while ((tp = get_bpstat_thread ()) != NULL) |
4619 | { | |
4620 | /* Since in sync mode, bpstat_do_actions may resume the | |
4621 | inferior, and only return when it is stopped at the next | |
4622 | breakpoint, we keep doing breakpoint actions until it returns | |
4623 | false to indicate the inferior was not resumed. */ | |
4624 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4625 | break; | |
4626 | } | |
353d1d73 | 4627 | |
694c6bf5 | 4628 | cleanup_if_error.release (); |
c906108c SS |
4629 | } |
4630 | ||
fa4727a6 DJ |
4631 | /* Print out the (old or new) value associated with a watchpoint. */ |
4632 | ||
4633 | static void | |
4634 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4635 | { | |
4636 | if (val == NULL) | |
7f6aba03 | 4637 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4638 | else |
79a45b7d TT |
4639 | { |
4640 | struct value_print_options opts; | |
4641 | get_user_print_options (&opts); | |
4642 | value_print (val, stream, &opts); | |
4643 | } | |
fa4727a6 DJ |
4644 | } |
4645 | ||
f303dbd6 PA |
4646 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4647 | debugging multiple threads. */ | |
4648 | ||
4649 | void | |
4650 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4651 | { | |
112e8700 | 4652 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4653 | return; |
4654 | ||
112e8700 | 4655 | uiout->text ("\n"); |
f303dbd6 PA |
4656 | |
4657 | if (show_thread_that_caused_stop ()) | |
4658 | { | |
f303dbd6 PA |
4659 | struct thread_info *thr = inferior_thread (); |
4660 | ||
112e8700 | 4661 | uiout->text ("Thread "); |
33eca680 | 4662 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 | 4663 | |
25558938 | 4664 | const char *name = thread_name (thr); |
f303dbd6 PA |
4665 | if (name != NULL) |
4666 | { | |
112e8700 | 4667 | uiout->text (" \""); |
33eca680 | 4668 | uiout->field_string ("name", name); |
112e8700 | 4669 | uiout->text ("\""); |
f303dbd6 PA |
4670 | } |
4671 | ||
112e8700 | 4672 | uiout->text (" hit "); |
f303dbd6 PA |
4673 | } |
4674 | } | |
4675 | ||
e514a9d6 | 4676 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4677 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4678 | 'print_it' in the bpstat structure. Under some circumstances we |
4679 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4680 | normal_stop(). */ |
e514a9d6 JM |
4681 | |
4682 | static enum print_stop_action | |
313f3b21 | 4683 | print_bp_stop_message (bpstat *bs) |
e514a9d6 JM |
4684 | { |
4685 | switch (bs->print_it) | |
4686 | { | |
4687 | case print_it_noop: | |
4a64f543 | 4688 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4689 | return PRINT_UNKNOWN; |
4690 | break; | |
4691 | ||
4692 | case print_it_done: | |
4693 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4694 | relevant messages. */ |
e514a9d6 JM |
4695 | return PRINT_SRC_AND_LOC; |
4696 | break; | |
4697 | ||
4698 | case print_it_normal: | |
4f8d1dc6 | 4699 | { |
f431efe5 PA |
4700 | struct breakpoint *b = bs->breakpoint_at; |
4701 | ||
1a6a67de TJB |
4702 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4703 | which has since been deleted. */ | |
4704 | if (b == NULL) | |
4705 | return PRINT_UNKNOWN; | |
4706 | ||
348d480f | 4707 | /* Normal case. Call the breakpoint's print_it method. */ |
c47614fe | 4708 | return b->print_it (bs); |
4f8d1dc6 | 4709 | } |
348d480f | 4710 | break; |
3086aeae | 4711 | |
e514a9d6 | 4712 | default: |
8e65ff28 | 4713 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4714 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4715 | break; |
c906108c | 4716 | } |
c906108c SS |
4717 | } |
4718 | ||
2f9ee862 | 4719 | /* See breakpoint.h. */ |
edcc5120 | 4720 | |
2f9ee862 | 4721 | void |
4e9e993a | 4722 | print_solib_event (bool is_catchpoint) |
edcc5120 | 4723 | { |
6fb16ce6 | 4724 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4725 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4726 | |
4727 | if (!is_catchpoint) | |
4728 | { | |
4729 | if (any_added || any_deleted) | |
112e8700 | 4730 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4731 | else |
112e8700 SM |
4732 | current_uiout->text (_("Stopped due to shared library event (no " |
4733 | "libraries added or removed)\n")); | |
edcc5120 TT |
4734 | } |
4735 | ||
112e8700 SM |
4736 | if (current_uiout->is_mi_like_p ()) |
4737 | current_uiout->field_string ("reason", | |
4738 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4739 | |
4740 | if (any_deleted) | |
4741 | { | |
112e8700 | 4742 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4743 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4744 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4745 | { |
6fb16ce6 SM |
4746 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4747 | ||
edcc5120 | 4748 | if (ix > 0) |
112e8700 SM |
4749 | current_uiout->text (" "); |
4750 | current_uiout->field_string ("library", name); | |
4751 | current_uiout->text ("\n"); | |
edcc5120 | 4752 | } |
edcc5120 TT |
4753 | } |
4754 | ||
4755 | if (any_added) | |
4756 | { | |
112e8700 | 4757 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4758 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4759 | bool first = true; |
52941706 | 4760 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4761 | { |
bcb430e4 | 4762 | if (!first) |
112e8700 | 4763 | current_uiout->text (" "); |
bcb430e4 | 4764 | first = false; |
112e8700 SM |
4765 | current_uiout->field_string ("library", iter->so_name); |
4766 | current_uiout->text ("\n"); | |
edcc5120 | 4767 | } |
edcc5120 TT |
4768 | } |
4769 | } | |
4770 | ||
e514a9d6 JM |
4771 | /* Print a message indicating what happened. This is called from |
4772 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4773 | list - a list of the eventpoints that caused this stop. KIND is |
4774 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4775 | routine calls the generic print routine for printing a message |
4776 | about reasons for stopping. This will print (for example) the | |
4777 | "Breakpoint n," part of the output. The return value of this | |
4778 | routine is one of: | |
c906108c | 4779 | |
4a64f543 | 4780 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4781 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4782 | code to print the location. An example is |
c5aa993b JM |
4783 | "Breakpoint 1, " which should be followed by |
4784 | the location. | |
917317f4 | 4785 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4786 | to also print the location part of the message. |
4787 | An example is the catch/throw messages, which | |
4a64f543 | 4788 | don't require a location appended to the end. |
917317f4 | 4789 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4790 | further info to be printed. */ |
c906108c | 4791 | |
917317f4 | 4792 | enum print_stop_action |
313f3b21 | 4793 | bpstat_print (bpstat *bs, int kind) |
c906108c | 4794 | { |
f486487f | 4795 | enum print_stop_action val; |
c5aa993b | 4796 | |
c906108c | 4797 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4798 | (Currently all watchpoints go on the bpstat whether hit or not. |
4799 | That probably could (should) be changed, provided care is taken | |
c906108c | 4800 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4801 | for (; bs; bs = bs->next) |
4802 | { | |
4803 | val = print_bp_stop_message (bs); | |
4804 | if (val == PRINT_SRC_ONLY | |
4805 | || val == PRINT_SRC_AND_LOC | |
4806 | || val == PRINT_NOTHING) | |
4807 | return val; | |
4808 | } | |
c906108c | 4809 | |
36dfb11c TT |
4810 | /* If we had hit a shared library event breakpoint, |
4811 | print_bp_stop_message would print out this message. If we hit an | |
4812 | OS-level shared library event, do the same thing. */ | |
4813 | if (kind == TARGET_WAITKIND_LOADED) | |
4814 | { | |
4e9e993a | 4815 | print_solib_event (false); |
36dfb11c TT |
4816 | return PRINT_NOTHING; |
4817 | } | |
4818 | ||
e514a9d6 | 4819 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4820 | with and nothing was printed. */ |
917317f4 | 4821 | return PRINT_UNKNOWN; |
c906108c SS |
4822 | } |
4823 | ||
bf469271 | 4824 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4825 | |
bf469271 PA |
4826 | static bool |
4827 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4828 | { |
278cd55f | 4829 | struct value *mark = value_mark (); |
bf469271 | 4830 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4831 | |
c906108c | 4832 | value_free_to_mark (mark); |
bf469271 | 4833 | return res; |
c906108c SS |
4834 | } |
4835 | ||
5760d0ab | 4836 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4837 | |
313f3b21 | 4838 | bpstat::bpstat (struct bp_location *bl, bpstat ***bs_link_pointer) |
04afa70c | 4839 | : next (NULL), |
b6433ede | 4840 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4841 | breakpoint_at (bl->owner), |
4842 | commands (NULL), | |
04afa70c TT |
4843 | print (0), |
4844 | stop (0), | |
4845 | print_it (print_it_normal) | |
c906108c | 4846 | { |
04afa70c TT |
4847 | **bs_link_pointer = this; |
4848 | *bs_link_pointer = &next; | |
4849 | } | |
4850 | ||
313f3b21 | 4851 | bpstat::bpstat () |
04afa70c | 4852 | : next (NULL), |
04afa70c TT |
4853 | breakpoint_at (NULL), |
4854 | commands (NULL), | |
04afa70c TT |
4855 | print (0), |
4856 | stop (0), | |
4857 | print_it (print_it_normal) | |
4858 | { | |
c906108c SS |
4859 | } |
4860 | \f | |
d983da9c DJ |
4861 | /* The target has stopped with waitstatus WS. Check if any hardware |
4862 | watchpoints have triggered, according to the target. */ | |
4863 | ||
4864 | int | |
c272a98c | 4865 | watchpoints_triggered (const target_waitstatus &ws) |
d983da9c | 4866 | { |
57810aa7 | 4867 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4868 | CORE_ADDR addr; |
d983da9c DJ |
4869 | |
4870 | if (!stopped_by_watchpoint) | |
4871 | { | |
4872 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4873 | as not triggered. */ | |
43892fdf | 4874 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4875 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4876 | { |
4877 | struct watchpoint *w = (struct watchpoint *) b; | |
4878 | ||
4879 | w->watchpoint_triggered = watch_triggered_no; | |
4880 | } | |
d983da9c DJ |
4881 | |
4882 | return 0; | |
4883 | } | |
4884 | ||
328d42d8 | 4885 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4886 | { |
4887 | /* We were stopped by a watchpoint, but we don't know where. | |
4888 | Mark all watchpoints as unknown. */ | |
43892fdf | 4889 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4890 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4891 | { |
4892 | struct watchpoint *w = (struct watchpoint *) b; | |
4893 | ||
4894 | w->watchpoint_triggered = watch_triggered_unknown; | |
4895 | } | |
d983da9c | 4896 | |
3c4797ba | 4897 | return 1; |
d983da9c DJ |
4898 | } |
4899 | ||
4900 | /* The target could report the data address. Mark watchpoints | |
4901 | affected by this data address as triggered, and all others as not | |
4902 | triggered. */ | |
4903 | ||
43892fdf | 4904 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4905 | if (is_hardware_watchpoint (b)) |
d983da9c | 4906 | { |
3a5c3e22 | 4907 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4908 | |
3a5c3e22 | 4909 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4910 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4911 | { |
3a5c3e22 | 4912 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4913 | { |
3a5c3e22 PA |
4914 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4915 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4916 | |
4917 | if (newaddr == start) | |
4918 | { | |
3a5c3e22 | 4919 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4920 | break; |
4921 | } | |
4922 | } | |
4923 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4924 | else if (target_watchpoint_addr_within_range |
4925 | (current_inferior ()->top_target (), addr, loc->address, | |
4926 | loc->length)) | |
9c06b0b4 | 4927 | { |
3a5c3e22 | 4928 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4929 | break; |
4930 | } | |
4931 | } | |
d983da9c DJ |
4932 | } |
4933 | ||
4934 | return 1; | |
4935 | } | |
4936 | ||
bf469271 PA |
4937 | /* Possible return values for watchpoint_check. */ |
4938 | enum wp_check_result | |
4939 | { | |
4940 | /* The watchpoint has been deleted. */ | |
4941 | WP_DELETED = 1, | |
4942 | ||
4943 | /* The value has changed. */ | |
4944 | WP_VALUE_CHANGED = 2, | |
4945 | ||
4946 | /* The value has not changed. */ | |
4947 | WP_VALUE_NOT_CHANGED = 3, | |
4948 | ||
4949 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4950 | WP_IGNORE = 4, | |
4951 | }; | |
c906108c SS |
4952 | |
4953 | #define BP_TEMPFLAG 1 | |
4954 | #define BP_HARDWAREFLAG 2 | |
4955 | ||
4a64f543 | 4956 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4957 | changed. */ |
553e4c11 | 4958 | |
bf469271 | 4959 | static wp_check_result |
313f3b21 | 4960 | watchpoint_check (bpstat *bs) |
c906108c | 4961 | { |
3a5c3e22 | 4962 | struct watchpoint *b; |
c906108c SS |
4963 | struct frame_info *fr; |
4964 | int within_current_scope; | |
4965 | ||
f431efe5 | 4966 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4967 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4968 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4969 | |
f6bc2008 PA |
4970 | /* If this is a local watchpoint, we only want to check if the |
4971 | watchpoint frame is in scope if the current thread is the thread | |
4972 | that was used to create the watchpoint. */ | |
4973 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4974 | return WP_IGNORE; |
f6bc2008 | 4975 | |
c906108c SS |
4976 | if (b->exp_valid_block == NULL) |
4977 | within_current_scope = 1; | |
4978 | else | |
4979 | { | |
edb3359d DJ |
4980 | struct frame_info *frame = get_current_frame (); |
4981 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4982 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4983 | ||
c9cf6e20 | 4984 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4985 | still in the function but the stack frame has already been |
4986 | invalidated. Since we can't rely on the values of local | |
4987 | variables after the stack has been destroyed, we are treating | |
4988 | the watchpoint in that state as `not changed' without further | |
4989 | checking. Don't mark watchpoints as changed if the current | |
4990 | frame is in an epilogue - even if they are in some other | |
4991 | frame, our view of the stack is likely to be wrong and | |
4992 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4993 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4994 | return WP_IGNORE; |
a0f49112 | 4995 | |
101dcfbe | 4996 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4997 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4998 | |
4999 | /* If we've gotten confused in the unwinder, we might have | |
5000 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5001 | if (within_current_scope) |
5002 | { | |
5003 | struct symbol *function; | |
5004 | ||
5005 | function = get_frame_function (fr); | |
5006 | if (function == NULL | |
4aeddc50 | 5007 | || !contained_in (b->exp_valid_block, function->value_block ())) |
edb3359d DJ |
5008 | within_current_scope = 0; |
5009 | } | |
69fbadd5 | 5010 | |
edb3359d | 5011 | if (within_current_scope) |
c906108c SS |
5012 | /* If we end up stopping, the current frame will get selected |
5013 | in normal_stop. So this call to select_frame won't affect | |
5014 | the user. */ | |
0f7d239c | 5015 | select_frame (fr); |
c906108c | 5016 | } |
c5aa993b | 5017 | |
c906108c SS |
5018 | if (within_current_scope) |
5019 | { | |
4a64f543 | 5020 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
5021 | time before we return to the command level and call |
5022 | free_all_values. We can't call free_all_values because we | |
5023 | might be in the middle of evaluating a function call. */ | |
c906108c | 5024 | |
9c06b0b4 | 5025 | struct value *mark; |
fa4727a6 DJ |
5026 | struct value *new_val; |
5027 | ||
c1fc2657 | 5028 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5029 | /* Since we don't know the exact trigger address (from |
5030 | stopped_data_address), just tell the user we've triggered | |
5031 | a mask watchpoint. */ | |
5032 | return WP_VALUE_CHANGED; | |
5033 | ||
5034 | mark = value_mark (); | |
1eaebe02 | 5035 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 5036 | NULL, NULL, false); |
218d2fc6 | 5037 | |
bb9d5f81 PP |
5038 | if (b->val_bitsize != 0) |
5039 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5040 | ||
4a64f543 MS |
5041 | /* We use value_equal_contents instead of value_equal because |
5042 | the latter coerces an array to a pointer, thus comparing just | |
5043 | the address of the array instead of its contents. This is | |
5044 | not what we want. */ | |
fa4727a6 | 5045 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
5046 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
5047 | new_val))) | |
c906108c | 5048 | { |
c906108c | 5049 | bs->old_val = b->val; |
850645cf | 5050 | b->val = release_value (new_val); |
4c1d86d9 | 5051 | b->val_valid = true; |
850645cf TT |
5052 | if (new_val != NULL) |
5053 | value_free_to_mark (mark); | |
c906108c SS |
5054 | return WP_VALUE_CHANGED; |
5055 | } | |
5056 | else | |
5057 | { | |
60e1c644 | 5058 | /* Nothing changed. */ |
c906108c | 5059 | value_free_to_mark (mark); |
c906108c SS |
5060 | return WP_VALUE_NOT_CHANGED; |
5061 | } | |
5062 | } | |
5063 | else | |
5064 | { | |
5065 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
5066 | if we temporarily ignored the watchpoint, then when |
5067 | we reenter the block in which it is valid it contains | |
5068 | garbage (in the case of a function, it may have two | |
5069 | garbage values, one before and one after the prologue). | |
5070 | So we can't even detect the first assignment to it and | |
5071 | watch after that (since the garbage may or may not equal | |
5072 | the first value assigned). */ | |
348d480f | 5073 | /* We print all the stop information in |
c47614fe TT |
5074 | breakpointprint_it, but in this case, by the time we |
5075 | call breakpoint->print_it this bp will be deleted | |
348d480f PA |
5076 | already. So we have no choice but print the information |
5077 | here. */ | |
468afe6c | 5078 | |
0e454242 | 5079 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5080 | { |
468afe6c PA |
5081 | struct ui_out *uiout = current_uiout; |
5082 | ||
112e8700 SM |
5083 | if (uiout->is_mi_like_p ()) |
5084 | uiout->field_string | |
5085 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5086 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5087 | "left the block in\n" | |
5088 | "which its expression is valid.\n", | |
5089 | signed_field ("wpnum", b->number)); | |
468afe6c | 5090 | } |
4ce44c66 | 5091 | |
cdac0397 | 5092 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5093 | b->commands = NULL; |
d0fb5eae | 5094 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5095 | |
5096 | return WP_DELETED; | |
5097 | } | |
5098 | } | |
5099 | ||
18a18393 | 5100 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5101 | breakpoint location BL. This function does not check if we should |
5102 | stop, only if BL explains the stop. */ | |
5103 | ||
18a18393 | 5104 | static int |
6c95b8df | 5105 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5106 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5107 | const target_waitstatus &ws) |
18a18393 VP |
5108 | { |
5109 | struct breakpoint *b = bl->owner; | |
5110 | ||
348d480f | 5111 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5112 | gdb_assert (b != NULL); |
5113 | ||
c47614fe | 5114 | return b->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5115 | } |
5116 | ||
3a5c3e22 PA |
5117 | /* Determine if the watched values have actually changed, and we |
5118 | should stop. If not, set BS->stop to 0. */ | |
5119 | ||
18a18393 | 5120 | static void |
313f3b21 | 5121 | bpstat_check_watchpoint (bpstat *bs) |
18a18393 | 5122 | { |
2bdf28a0 | 5123 | const struct bp_location *bl; |
3a5c3e22 | 5124 | struct watchpoint *b; |
2bdf28a0 JK |
5125 | |
5126 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5127 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5128 | gdb_assert (bl != NULL); |
3a5c3e22 | 5129 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5130 | gdb_assert (b != NULL); |
18a18393 | 5131 | |
18a18393 | 5132 | { |
18a18393 VP |
5133 | int must_check_value = 0; |
5134 | ||
c1fc2657 | 5135 | if (b->type == bp_watchpoint) |
18a18393 VP |
5136 | /* For a software watchpoint, we must always check the |
5137 | watched value. */ | |
5138 | must_check_value = 1; | |
5139 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5140 | /* We have a hardware watchpoint (read, write, or access) | |
5141 | and the target earlier reported an address watched by | |
5142 | this watchpoint. */ | |
5143 | must_check_value = 1; | |
5144 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5145 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5146 | /* We were stopped by a hardware watchpoint, but the target could |
5147 | not report the data address. We must check the watchpoint's | |
5148 | value. Access and read watchpoints are out of luck; without | |
5149 | a data address, we can't figure it out. */ | |
5150 | must_check_value = 1; | |
3a5c3e22 | 5151 | |
18a18393 VP |
5152 | if (must_check_value) |
5153 | { | |
bf469271 PA |
5154 | wp_check_result e; |
5155 | ||
a70b8144 | 5156 | try |
bf469271 PA |
5157 | { |
5158 | e = watchpoint_check (bs); | |
5159 | } | |
230d2906 | 5160 | catch (const gdb_exception &ex) |
bf469271 PA |
5161 | { |
5162 | exception_fprintf (gdb_stderr, ex, | |
5163 | "Error evaluating expression " | |
5164 | "for watchpoint %d\n", | |
5165 | b->number); | |
5166 | ||
5167 | SWITCH_THRU_ALL_UIS () | |
5168 | { | |
6cb06a8c TT |
5169 | gdb_printf (_("Watchpoint %d deleted.\n"), |
5170 | b->number); | |
bf469271 PA |
5171 | } |
5172 | watchpoint_del_at_next_stop (b); | |
5173 | e = WP_DELETED; | |
5174 | } | |
bf469271 | 5175 | |
18a18393 VP |
5176 | switch (e) |
5177 | { | |
5178 | case WP_DELETED: | |
5179 | /* We've already printed what needs to be printed. */ | |
5180 | bs->print_it = print_it_done; | |
5181 | /* Stop. */ | |
5182 | break; | |
60e1c644 PA |
5183 | case WP_IGNORE: |
5184 | bs->print_it = print_it_noop; | |
5185 | bs->stop = 0; | |
5186 | break; | |
18a18393 | 5187 | case WP_VALUE_CHANGED: |
c1fc2657 | 5188 | if (b->type == bp_read_watchpoint) |
18a18393 | 5189 | { |
85d721b8 PA |
5190 | /* There are two cases to consider here: |
5191 | ||
4a64f543 | 5192 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5193 | In that case, trust the target, and always report |
5194 | the watchpoint hit to the user. Even though | |
5195 | reads don't cause value changes, the value may | |
5196 | have changed since the last time it was read, and | |
5197 | since we're not trapping writes, we will not see | |
5198 | those, and as such we should ignore our notion of | |
5199 | old value. | |
5200 | ||
4a64f543 | 5201 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5202 | reads and writes. There are two ways this may |
5203 | happen: | |
5204 | ||
4a64f543 | 5205 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5206 | reads only, but can break on accesses (reads or |
5207 | writes), such as e.g., x86. We detect this case | |
5208 | at the time we try to insert read watchpoints. | |
5209 | ||
4a64f543 | 5210 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5211 | watchpoints, but, the user set an access or write |
5212 | watchpoint watching the same memory as this read | |
5213 | watchpoint. | |
5214 | ||
5215 | If we're watching memory writes as well as reads, | |
5216 | ignore watchpoint hits when we find that the | |
5217 | value hasn't changed, as reads don't cause | |
5218 | changes. This still gives false positives when | |
5219 | the program writes the same value to memory as | |
5220 | what there was already in memory (we will confuse | |
5221 | it for a read), but it's much better than | |
5222 | nothing. */ | |
5223 | ||
5224 | int other_write_watchpoint = 0; | |
5225 | ||
5226 | if (bl->watchpoint_type == hw_read) | |
5227 | { | |
43892fdf | 5228 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5229 | if (other_b->type == bp_hardware_watchpoint |
5230 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5231 | { |
3a5c3e22 PA |
5232 | struct watchpoint *other_w = |
5233 | (struct watchpoint *) other_b; | |
5234 | ||
5235 | if (other_w->watchpoint_triggered | |
5236 | == watch_triggered_yes) | |
5237 | { | |
5238 | other_write_watchpoint = 1; | |
5239 | break; | |
5240 | } | |
85d721b8 PA |
5241 | } |
5242 | } | |
5243 | ||
5244 | if (other_write_watchpoint | |
5245 | || bl->watchpoint_type == hw_access) | |
5246 | { | |
5247 | /* We're watching the same memory for writes, | |
5248 | and the value changed since the last time we | |
5249 | updated it, so this trap must be for a write. | |
5250 | Ignore it. */ | |
5251 | bs->print_it = print_it_noop; | |
5252 | bs->stop = 0; | |
5253 | } | |
18a18393 VP |
5254 | } |
5255 | break; | |
5256 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5257 | if (b->type == bp_hardware_watchpoint |
5258 | || b->type == bp_watchpoint) | |
18a18393 VP |
5259 | { |
5260 | /* Don't stop: write watchpoints shouldn't fire if | |
5261 | the value hasn't changed. */ | |
5262 | bs->print_it = print_it_noop; | |
5263 | bs->stop = 0; | |
5264 | } | |
5265 | /* Stop. */ | |
5266 | break; | |
5267 | default: | |
5268 | /* Can't happen. */ | |
18a18393 VP |
5269 | break; |
5270 | } | |
5271 | } | |
5272 | else /* must_check_value == 0 */ | |
5273 | { | |
5274 | /* This is a case where some watchpoint(s) triggered, but | |
5275 | not at the address of this watchpoint, or else no | |
5276 | watchpoint triggered after all. So don't print | |
5277 | anything for this watchpoint. */ | |
5278 | bs->print_it = print_it_noop; | |
5279 | bs->stop = 0; | |
5280 | } | |
5281 | } | |
5282 | } | |
5283 | ||
7d4df6a4 DE |
5284 | /* For breakpoints that are currently marked as telling gdb to stop, |
5285 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5286 | of breakpoint referred to by BS. If we should not stop for this |
5287 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5288 | |
18a18393 | 5289 | static void |
313f3b21 | 5290 | bpstat_check_breakpoint_conditions (bpstat *bs, thread_info *thread) |
18a18393 | 5291 | { |
2bdf28a0 JK |
5292 | const struct bp_location *bl; |
5293 | struct breakpoint *b; | |
bf469271 PA |
5294 | /* Assume stop. */ |
5295 | bool condition_result = true; | |
7d4df6a4 DE |
5296 | struct expression *cond; |
5297 | ||
5298 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5299 | |
5300 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5301 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5302 | gdb_assert (bl != NULL); |
f431efe5 | 5303 | b = bs->breakpoint_at; |
2bdf28a0 | 5304 | gdb_assert (b != NULL); |
18a18393 | 5305 | |
b775012e LM |
5306 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5307 | need to do so again since GDB does not know if we stopped due to a | |
5308 | breakpoint or a single step breakpoint. */ | |
5309 | ||
18a18393 | 5310 | if (frame_id_p (b->frame_id) |
edb3359d | 5311 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5312 | { |
7d4df6a4 DE |
5313 | bs->stop = 0; |
5314 | return; | |
5315 | } | |
60e1c644 | 5316 | |
12ab52e9 PA |
5317 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5318 | evaluating the condition if this isn't the specified | |
5319 | thread/task. */ | |
00431a78 PA |
5320 | if ((b->thread != -1 && b->thread != thread->global_num) |
5321 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5322 | { |
5323 | bs->stop = 0; | |
5324 | return; | |
5325 | } | |
5326 | ||
6dddc817 DE |
5327 | /* Evaluate extension language breakpoints that have a "stop" method |
5328 | implemented. */ | |
5329 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5330 | |
7d4df6a4 DE |
5331 | if (is_watchpoint (b)) |
5332 | { | |
5333 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5334 | |
4d01a485 | 5335 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5336 | } |
5337 | else | |
4d01a485 | 5338 | cond = bl->cond.get (); |
60e1c644 | 5339 | |
7d4df6a4 DE |
5340 | if (cond && b->disposition != disp_del_at_next_stop) |
5341 | { | |
5342 | int within_current_scope = 1; | |
5343 | struct watchpoint * w; | |
60e1c644 | 5344 | |
7d4df6a4 DE |
5345 | /* We use value_mark and value_free_to_mark because it could |
5346 | be a long time before we return to the command level and | |
5347 | call free_all_values. We can't call free_all_values | |
5348 | because we might be in the middle of evaluating a | |
5349 | function call. */ | |
5350 | struct value *mark = value_mark (); | |
5351 | ||
5352 | if (is_watchpoint (b)) | |
5353 | w = (struct watchpoint *) b; | |
5354 | else | |
5355 | w = NULL; | |
5356 | ||
5357 | /* Need to select the frame, with all that implies so that | |
5358 | the conditions will have the right context. Because we | |
5359 | use the frame, we will not see an inlined function's | |
5360 | variables when we arrive at a breakpoint at the start | |
5361 | of the inlined function; the current frame will be the | |
5362 | call site. */ | |
5363 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5364 | select_frame (get_current_frame ()); | |
5365 | else | |
18a18393 | 5366 | { |
7d4df6a4 DE |
5367 | struct frame_info *frame; |
5368 | ||
5369 | /* For local watchpoint expressions, which particular | |
5370 | instance of a local is being watched matters, so we | |
5371 | keep track of the frame to evaluate the expression | |
5372 | in. To evaluate the condition however, it doesn't | |
5373 | really matter which instantiation of the function | |
5374 | where the condition makes sense triggers the | |
5375 | watchpoint. This allows an expression like "watch | |
5376 | global if q > 10" set in `func', catch writes to | |
5377 | global on all threads that call `func', or catch | |
5378 | writes on all recursive calls of `func' by a single | |
5379 | thread. We simply always evaluate the condition in | |
5380 | the innermost frame that's executing where it makes | |
5381 | sense to evaluate the condition. It seems | |
5382 | intuitive. */ | |
5383 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5384 | if (frame != NULL) | |
5385 | select_frame (frame); | |
5386 | else | |
5387 | within_current_scope = 0; | |
18a18393 | 5388 | } |
7d4df6a4 | 5389 | if (within_current_scope) |
bf469271 | 5390 | { |
a70b8144 | 5391 | try |
bf469271 PA |
5392 | { |
5393 | condition_result = breakpoint_cond_eval (cond); | |
5394 | } | |
230d2906 | 5395 | catch (const gdb_exception &ex) |
bf469271 PA |
5396 | { |
5397 | exception_fprintf (gdb_stderr, ex, | |
5398 | "Error in testing breakpoint condition:\n"); | |
5399 | } | |
bf469271 | 5400 | } |
7d4df6a4 | 5401 | else |
18a18393 | 5402 | { |
7d4df6a4 DE |
5403 | warning (_("Watchpoint condition cannot be tested " |
5404 | "in the current scope")); | |
5405 | /* If we failed to set the right context for this | |
5406 | watchpoint, unconditionally report it. */ | |
18a18393 | 5407 | } |
7d4df6a4 DE |
5408 | /* FIXME-someday, should give breakpoint #. */ |
5409 | value_free_to_mark (mark); | |
18a18393 | 5410 | } |
7d4df6a4 | 5411 | |
bf469271 | 5412 | if (cond && !condition_result) |
7d4df6a4 DE |
5413 | { |
5414 | bs->stop = 0; | |
5415 | } | |
7d4df6a4 DE |
5416 | else if (b->ignore_count > 0) |
5417 | { | |
5418 | b->ignore_count--; | |
5419 | bs->stop = 0; | |
5420 | /* Increase the hit count even though we don't stop. */ | |
5421 | ++(b->hit_count); | |
76727919 | 5422 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5423 | } |
18a18393 VP |
5424 | } |
5425 | ||
1cf4d951 PA |
5426 | /* Returns true if we need to track moribund locations of LOC's type |
5427 | on the current target. */ | |
5428 | ||
5429 | static int | |
5430 | need_moribund_for_location_type (struct bp_location *loc) | |
5431 | { | |
5432 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5433 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5434 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5435 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5436 | } | |
5437 | ||
ddfe970e | 5438 | /* See breakpoint.h. */ |
c906108c | 5439 | |
313f3b21 | 5440 | bpstat * |
ddfe970e | 5441 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5442 | const target_waitstatus &ws) |
c906108c | 5443 | { |
313f3b21 | 5444 | bpstat *bs_head = nullptr, **bs_link = &bs_head; |
c5aa993b | 5445 | |
43892fdf | 5446 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5447 | { |
1a853c52 | 5448 | if (!breakpoint_enabled (b)) |
429374b8 | 5449 | continue; |
a5606eee | 5450 | |
40cb8ca5 | 5451 | for (bp_location *bl : b->locations ()) |
429374b8 | 5452 | { |
4a64f543 MS |
5453 | /* For hardware watchpoints, we look only at the first |
5454 | location. The watchpoint_check function will work on the | |
5455 | entire expression, not the individual locations. For | |
5456 | read watchpoints, the watchpoints_triggered function has | |
5457 | checked all locations already. */ | |
429374b8 JK |
5458 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5459 | break; | |
18a18393 | 5460 | |
b5fa468f | 5461 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5462 | continue; |
c5aa993b | 5463 | |
09ac7c10 | 5464 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5465 | continue; |
c5aa993b | 5466 | |
4a64f543 MS |
5467 | /* Come here if it's a watchpoint, or if the break address |
5468 | matches. */ | |
c5aa993b | 5469 | |
313f3b21 | 5470 | bpstat *bs = new bpstat (bl, &bs_link); /* Alloc a bpstat to |
ddfe970e | 5471 | explain stop. */ |
c5aa993b | 5472 | |
f431efe5 PA |
5473 | /* Assume we stop. Should we find a watchpoint that is not |
5474 | actually triggered, or if the condition of the breakpoint | |
5475 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5476 | bs->stop = 1; |
5477 | bs->print = 1; | |
d983da9c | 5478 | |
f431efe5 PA |
5479 | /* If this is a scope breakpoint, mark the associated |
5480 | watchpoint as triggered so that we will handle the | |
5481 | out-of-scope event. We'll get to the watchpoint next | |
5482 | iteration. */ | |
d0fb5eae | 5483 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5484 | { |
5485 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5486 | ||
5487 | w->watchpoint_triggered = watch_triggered_yes; | |
5488 | } | |
f431efe5 PA |
5489 | } |
5490 | } | |
5491 | ||
7c16b83e | 5492 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5493 | if (!target_supports_stopped_by_sw_breakpoint () |
5494 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5495 | { |
1123588c | 5496 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5497 | { |
1cf4d951 PA |
5498 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5499 | && need_moribund_for_location_type (loc)) | |
5500 | { | |
313f3b21 | 5501 | bpstat *bs = new bpstat (loc, &bs_link); |
1cf4d951 PA |
5502 | /* For hits of moribund locations, we should just proceed. */ |
5503 | bs->stop = 0; | |
5504 | bs->print = 0; | |
5505 | bs->print_it = print_it_noop; | |
5506 | } | |
f431efe5 PA |
5507 | } |
5508 | } | |
5509 | ||
ddfe970e KS |
5510 | return bs_head; |
5511 | } | |
5512 | ||
5513 | /* See breakpoint.h. */ | |
5514 | ||
313f3b21 | 5515 | bpstat * |
ddfe970e | 5516 | bpstat_stop_status (const address_space *aspace, |
00431a78 | 5517 | CORE_ADDR bp_addr, thread_info *thread, |
c272a98c | 5518 | const target_waitstatus &ws, |
313f3b21 | 5519 | bpstat *stop_chain) |
ddfe970e KS |
5520 | { |
5521 | struct breakpoint *b = NULL; | |
5522 | /* First item of allocated bpstat's. */ | |
313f3b21 SM |
5523 | bpstat *bs_head = stop_chain; |
5524 | bpstat *bs; | |
ddfe970e KS |
5525 | int need_remove_insert; |
5526 | int removed_any; | |
5527 | ||
5528 | /* First, build the bpstat chain with locations that explain a | |
5529 | target stop, while being careful to not set the target running, | |
5530 | as that may invalidate locations (in particular watchpoint | |
5531 | locations are recreated). Resuming will happen here with | |
5532 | breakpoint conditions or watchpoint expressions that include | |
5533 | inferior function calls. */ | |
5534 | if (bs_head == NULL) | |
5535 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5536 | ||
edcc5120 TT |
5537 | /* A bit of special processing for shlib breakpoints. We need to |
5538 | process solib loading here, so that the lists of loaded and | |
5539 | unloaded libraries are correct before we handle "catch load" and | |
5540 | "catch unload". */ | |
5541 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5542 | { | |
5d268276 | 5543 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5544 | { |
5545 | handle_solib_event (); | |
5546 | break; | |
5547 | } | |
5548 | } | |
5549 | ||
f431efe5 PA |
5550 | /* Now go through the locations that caused the target to stop, and |
5551 | check whether we're interested in reporting this stop to higher | |
5552 | layers, or whether we should resume the target transparently. */ | |
5553 | ||
5554 | removed_any = 0; | |
5555 | ||
5760d0ab | 5556 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5557 | { |
5558 | if (!bs->stop) | |
5559 | continue; | |
5560 | ||
f431efe5 | 5561 | b = bs->breakpoint_at; |
c47614fe | 5562 | b->check_status (bs); |
348d480f | 5563 | if (bs->stop) |
28010a5d | 5564 | { |
00431a78 | 5565 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5566 | |
429374b8 JK |
5567 | if (bs->stop) |
5568 | { | |
5569 | ++(b->hit_count); | |
c906108c | 5570 | |
4a64f543 | 5571 | /* We will stop here. */ |
429374b8 JK |
5572 | if (b->disposition == disp_disable) |
5573 | { | |
816338b5 | 5574 | --(b->enable_count); |
1a853c52 | 5575 | if (b->enable_count <= 0) |
429374b8 | 5576 | b->enable_state = bp_disabled; |
f431efe5 | 5577 | removed_any = 1; |
429374b8 | 5578 | } |
bd7ccaa9 | 5579 | gdb::observers::breakpoint_modified.notify (b); |
429374b8 JK |
5580 | if (b->silent) |
5581 | bs->print = 0; | |
5582 | bs->commands = b->commands; | |
abf85f46 | 5583 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5584 | ? bs->commands.get () : NULL)) |
abf85f46 | 5585 | bs->print = 0; |
9d6e6e84 | 5586 | |
c47614fe | 5587 | b->after_condition_true (bs); |
429374b8 JK |
5588 | } |
5589 | ||
348d480f | 5590 | } |
a9b3a50f PA |
5591 | |
5592 | /* Print nothing for this entry if we don't stop or don't | |
5593 | print. */ | |
5594 | if (!bs->stop || !bs->print) | |
5595 | bs->print_it = print_it_noop; | |
429374b8 | 5596 | } |
876fa593 | 5597 | |
d983da9c DJ |
5598 | /* If we aren't stopping, the value of some hardware watchpoint may |
5599 | not have changed, but the intermediate memory locations we are | |
5600 | watching may have. Don't bother if we're stopping; this will get | |
5601 | done later. */ | |
d832cb68 | 5602 | need_remove_insert = 0; |
5760d0ab JK |
5603 | if (! bpstat_causes_stop (bs_head)) |
5604 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5605 | if (!bs->stop |
f431efe5 PA |
5606 | && bs->breakpoint_at |
5607 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5608 | { |
3a5c3e22 PA |
5609 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5610 | ||
5611 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5612 | need_remove_insert = 1; |
d983da9c DJ |
5613 | } |
5614 | ||
d832cb68 | 5615 | if (need_remove_insert) |
44702360 | 5616 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5617 | else if (removed_any) |
44702360 | 5618 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5619 | |
5760d0ab | 5620 | return bs_head; |
c906108c | 5621 | } |
628fe4e4 | 5622 | |
d37e0847 PA |
5623 | /* See breakpoint.h. */ |
5624 | ||
5625 | bpstat * | |
5626 | bpstat_stop_status_nowatch (const address_space *aspace, CORE_ADDR bp_addr, | |
5627 | thread_info *thread, const target_waitstatus &ws) | |
5628 | { | |
5629 | gdb_assert (!target_stopped_by_watchpoint ()); | |
5630 | ||
5631 | /* Clear all watchpoints' 'watchpoint_triggered' value from a | |
5632 | previous stop to avoid confusing bpstat_stop_status. */ | |
5633 | watchpoints_triggered (ws); | |
5634 | ||
5635 | return bpstat_stop_status (aspace, bp_addr, thread, ws); | |
5636 | } | |
5637 | ||
628fe4e4 | 5638 | static void |
61c26be8 | 5639 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5640 | { |
628fe4e4 JK |
5641 | struct gdbarch *gdbarch; |
5642 | ||
1eb8556f | 5643 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5644 | |
628fe4e4 JK |
5645 | /* Switch terminal for any messages produced by |
5646 | breakpoint_re_set. */ | |
223ffa71 | 5647 | target_terminal::ours_for_output (); |
628fe4e4 | 5648 | |
61c26be8 MS |
5649 | gdbarch = get_frame_arch (get_current_frame ()); |
5650 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5651 | thus it is expected that its objectfile can be found through | |
5652 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5653 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5654 | function needs to be updated too. */ | |
5655 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5656 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5657 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5658 | |
223ffa71 | 5659 | target_terminal::inferior (); |
628fe4e4 JK |
5660 | } |
5661 | ||
5662 | /* Prepare WHAT final decision for infrun. */ | |
5663 | ||
5664 | /* Decide what infrun needs to do with this bpstat. */ | |
5665 | ||
c906108c | 5666 | struct bpstat_what |
313f3b21 | 5667 | bpstat_what (bpstat *bs_head) |
c906108c | 5668 | { |
c906108c | 5669 | struct bpstat_what retval; |
313f3b21 | 5670 | bpstat *bs; |
c906108c | 5671 | |
628fe4e4 | 5672 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5673 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5674 | retval.is_longjmp = false; |
628fe4e4 | 5675 | |
0e30163f | 5676 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5677 | { |
628fe4e4 JK |
5678 | /* Extract this BS's action. After processing each BS, we check |
5679 | if its action overrides all we've seem so far. */ | |
5680 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5681 | enum bptype bptype; | |
5682 | ||
c906108c | 5683 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5684 | { |
5685 | /* I suspect this can happen if it was a momentary | |
5686 | breakpoint which has since been deleted. */ | |
5687 | bptype = bp_none; | |
5688 | } | |
20874c92 | 5689 | else |
f431efe5 | 5690 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5691 | |
5692 | switch (bptype) | |
c906108c SS |
5693 | { |
5694 | case bp_none: | |
628fe4e4 | 5695 | break; |
c906108c SS |
5696 | case bp_breakpoint: |
5697 | case bp_hardware_breakpoint: | |
7c16b83e | 5698 | case bp_single_step: |
c906108c SS |
5699 | case bp_until: |
5700 | case bp_finish: | |
a9b3a50f | 5701 | case bp_shlib_event: |
c906108c SS |
5702 | if (bs->stop) |
5703 | { | |
5704 | if (bs->print) | |
628fe4e4 | 5705 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5706 | else |
628fe4e4 | 5707 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5708 | } |
5709 | else | |
628fe4e4 | 5710 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5711 | break; |
5712 | case bp_watchpoint: | |
5713 | case bp_hardware_watchpoint: | |
5714 | case bp_read_watchpoint: | |
5715 | case bp_access_watchpoint: | |
5716 | if (bs->stop) | |
5717 | { | |
5718 | if (bs->print) | |
628fe4e4 | 5719 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5720 | else |
628fe4e4 | 5721 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5722 | } |
5723 | else | |
628fe4e4 JK |
5724 | { |
5725 | /* There was a watchpoint, but we're not stopping. | |
5726 | This requires no further action. */ | |
5727 | } | |
c906108c SS |
5728 | break; |
5729 | case bp_longjmp: | |
e2e4d78b | 5730 | case bp_longjmp_call_dummy: |
186c406b | 5731 | case bp_exception: |
0a39bb32 PA |
5732 | if (bs->stop) |
5733 | { | |
5734 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5735 | retval.is_longjmp = bptype != bp_exception; | |
5736 | } | |
5737 | else | |
5738 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5739 | break; |
5740 | case bp_longjmp_resume: | |
186c406b | 5741 | case bp_exception_resume: |
0a39bb32 PA |
5742 | if (bs->stop) |
5743 | { | |
5744 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5745 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5746 | } | |
5747 | else | |
5748 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5749 | break; |
5750 | case bp_step_resume: | |
5751 | if (bs->stop) | |
628fe4e4 JK |
5752 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5753 | else | |
c906108c | 5754 | { |
628fe4e4 JK |
5755 | /* It is for the wrong frame. */ |
5756 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5757 | } |
c906108c | 5758 | break; |
2c03e5be PA |
5759 | case bp_hp_step_resume: |
5760 | if (bs->stop) | |
5761 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5762 | else | |
5763 | { | |
5764 | /* It is for the wrong frame. */ | |
5765 | this_action = BPSTAT_WHAT_SINGLE; | |
5766 | } | |
5767 | break; | |
c906108c | 5768 | case bp_watchpoint_scope: |
c4093a6a | 5769 | case bp_thread_event: |
1900040c | 5770 | case bp_overlay_event: |
0fd8e87f | 5771 | case bp_longjmp_master: |
aa7d318d | 5772 | case bp_std_terminate_master: |
186c406b | 5773 | case bp_exception_master: |
628fe4e4 | 5774 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5775 | break; |
ce78b96d | 5776 | case bp_catchpoint: |
c5aa993b JM |
5777 | if (bs->stop) |
5778 | { | |
5779 | if (bs->print) | |
628fe4e4 | 5780 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5781 | else |
628fe4e4 | 5782 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5783 | } |
5784 | else | |
628fe4e4 | 5785 | { |
cb1e4e32 PA |
5786 | /* Some catchpoints are implemented with breakpoints. |
5787 | For those, we need to step over the breakpoint. */ | |
6e14e441 PA |
5788 | if (bs->bp_location_at->loc_type == bp_loc_software_breakpoint |
5789 | || bs->bp_location_at->loc_type == bp_loc_hardware_breakpoint) | |
cb1e4e32 | 5790 | this_action = BPSTAT_WHAT_SINGLE; |
628fe4e4 JK |
5791 | } |
5792 | break; | |
628fe4e4 | 5793 | case bp_jit_event: |
628fe4e4 | 5794 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5795 | break; |
c906108c | 5796 | case bp_call_dummy: |
53a5351d JM |
5797 | /* Make sure the action is stop (silent or noisy), |
5798 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5799 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5800 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5801 | break; |
5802 | case bp_std_terminate: | |
5803 | /* Make sure the action is stop (silent or noisy), | |
5804 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5805 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5806 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5807 | break; |
1042e4c0 | 5808 | case bp_tracepoint: |
7a697b8d | 5809 | case bp_fast_tracepoint: |
0fb4aa4b | 5810 | case bp_static_tracepoint: |
7b572efb | 5811 | case bp_static_marker_tracepoint: |
1042e4c0 SS |
5812 | /* Tracepoint hits should not be reported back to GDB, and |
5813 | if one got through somehow, it should have been filtered | |
5814 | out already. */ | |
5815 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5816 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5817 | break; |
5818 | case bp_gnu_ifunc_resolver: | |
5819 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5820 | this_action = BPSTAT_WHAT_SINGLE; | |
5821 | break; | |
5822 | case bp_gnu_ifunc_resolver_return: | |
5823 | /* The breakpoint will be removed, execution will restart from the | |
5824 | PC of the former breakpoint. */ | |
5825 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5826 | break; | |
e7e0cddf SS |
5827 | |
5828 | case bp_dprintf: | |
a11cfd87 HZ |
5829 | if (bs->stop) |
5830 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5831 | else | |
5832 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5833 | break; |
5834 | ||
628fe4e4 JK |
5835 | default: |
5836 | internal_error (__FILE__, __LINE__, | |
5837 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5838 | } |
628fe4e4 | 5839 | |
325fac50 | 5840 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5841 | } |
628fe4e4 | 5842 | |
243a9253 PA |
5843 | return retval; |
5844 | } | |
628fe4e4 | 5845 | |
243a9253 | 5846 | void |
313f3b21 | 5847 | bpstat_run_callbacks (bpstat *bs_head) |
243a9253 | 5848 | { |
313f3b21 | 5849 | bpstat *bs; |
628fe4e4 | 5850 | |
0e30163f JK |
5851 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5852 | { | |
5853 | struct breakpoint *b = bs->breakpoint_at; | |
5854 | ||
5855 | if (b == NULL) | |
5856 | continue; | |
5857 | switch (b->type) | |
5858 | { | |
243a9253 | 5859 | case bp_jit_event: |
61c26be8 | 5860 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5861 | break; |
0e30163f JK |
5862 | case bp_gnu_ifunc_resolver: |
5863 | gnu_ifunc_resolver_stop (b); | |
5864 | break; | |
5865 | case bp_gnu_ifunc_resolver_return: | |
5866 | gnu_ifunc_resolver_return_stop (b); | |
5867 | break; | |
5868 | } | |
5869 | } | |
c906108c SS |
5870 | } |
5871 | ||
4c462cb0 | 5872 | /* See breakpoint.h. */ |
c906108c | 5873 | |
4c462cb0 SM |
5874 | bool |
5875 | bpstat_should_step () | |
c906108c | 5876 | { |
43892fdf | 5877 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 5878 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 5879 | return true; |
43892fdf | 5880 | |
4c462cb0 | 5881 | return false; |
c906108c SS |
5882 | } |
5883 | ||
4c462cb0 SM |
5884 | /* See breakpoint.h. */ |
5885 | ||
5886 | bool | |
313f3b21 | 5887 | bpstat_causes_stop (bpstat *bs) |
67822962 PA |
5888 | { |
5889 | for (; bs != NULL; bs = bs->next) | |
5890 | if (bs->stop) | |
4c462cb0 | 5891 | return true; |
67822962 | 5892 | |
4c462cb0 | 5893 | return false; |
67822962 PA |
5894 | } |
5895 | ||
c906108c | 5896 | \f |
c5aa993b | 5897 | |
6c92c339 | 5898 | /* Compute a number of spaces suitable to indent the next line |
170b53b2 UW |
5899 | so it starts at the position corresponding to the table column |
5900 | named COL_NAME in the currently active table of UIOUT. */ | |
5901 | ||
6c92c339 | 5902 | static int |
170b53b2 UW |
5903 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) |
5904 | { | |
170b53b2 | 5905 | int i, total_width, width, align; |
c5209615 | 5906 | const char *text; |
170b53b2 UW |
5907 | |
5908 | total_width = 0; | |
112e8700 | 5909 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5910 | { |
5911 | if (strcmp (text, col_name) == 0) | |
6c92c339 | 5912 | return total_width; |
170b53b2 UW |
5913 | |
5914 | total_width += width + 1; | |
5915 | } | |
5916 | ||
6c92c339 | 5917 | return 0; |
170b53b2 UW |
5918 | } |
5919 | ||
b775012e LM |
5920 | /* Determine if the locations of this breakpoint will have their conditions |
5921 | evaluated by the target, host or a mix of both. Returns the following: | |
5922 | ||
5923 | "host": Host evals condition. | |
5924 | "host or target": Host or Target evals condition. | |
5925 | "target": Target evals condition. | |
5926 | */ | |
5927 | ||
5928 | static const char * | |
a67bcaba | 5929 | bp_condition_evaluator (const breakpoint *b) |
b775012e | 5930 | { |
b775012e LM |
5931 | char host_evals = 0; |
5932 | char target_evals = 0; | |
5933 | ||
5934 | if (!b) | |
5935 | return NULL; | |
5936 | ||
5937 | if (!is_breakpoint (b)) | |
5938 | return NULL; | |
5939 | ||
5940 | if (gdb_evaluates_breakpoint_condition_p () | |
5941 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5942 | return condition_evaluation_host; | |
5943 | ||
40cb8ca5 | 5944 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5945 | { |
5946 | if (bl->cond_bytecode) | |
5947 | target_evals++; | |
5948 | else | |
5949 | host_evals++; | |
5950 | } | |
5951 | ||
5952 | if (host_evals && target_evals) | |
5953 | return condition_evaluation_both; | |
5954 | else if (target_evals) | |
5955 | return condition_evaluation_target; | |
5956 | else | |
5957 | return condition_evaluation_host; | |
5958 | } | |
5959 | ||
5960 | /* Determine the breakpoint location's condition evaluator. This is | |
5961 | similar to bp_condition_evaluator, but for locations. */ | |
5962 | ||
5963 | static const char * | |
5964 | bp_location_condition_evaluator (struct bp_location *bl) | |
5965 | { | |
5966 | if (bl && !is_breakpoint (bl->owner)) | |
5967 | return NULL; | |
5968 | ||
5969 | if (gdb_evaluates_breakpoint_condition_p () | |
5970 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5971 | return condition_evaluation_host; | |
5972 | ||
5973 | if (bl && bl->cond_bytecode) | |
5974 | return condition_evaluation_target; | |
5975 | else | |
5976 | return condition_evaluation_host; | |
5977 | } | |
5978 | ||
859825b8 JK |
5979 | /* Print the LOC location out of the list of B->LOC locations. */ |
5980 | ||
170b53b2 | 5981 | static void |
a67bcaba | 5982 | print_breakpoint_location (const breakpoint *b, |
170b53b2 | 5983 | struct bp_location *loc) |
0d381245 | 5984 | { |
79a45e25 | 5985 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5986 | |
5987 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5988 | |
859825b8 JK |
5989 | if (loc != NULL && loc->shlib_disabled) |
5990 | loc = NULL; | |
5991 | ||
6c95b8df PA |
5992 | if (loc != NULL) |
5993 | set_current_program_space (loc->pspace); | |
5994 | ||
56435ebe | 5995 | if (b->display_canonical) |
d28cd78a | 5996 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5997 | else if (loc && loc->symtab) |
0d381245 | 5998 | { |
4a27f119 KS |
5999 | const struct symbol *sym = loc->symbol; |
6000 | ||
0d381245 VP |
6001 | if (sym) |
6002 | { | |
112e8700 | 6003 | uiout->text ("in "); |
987012b8 | 6004 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 6005 | function_name_style.style ()); |
112e8700 SM |
6006 | uiout->text (" "); |
6007 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
6008 | uiout->text ("at "); | |
0d381245 | 6009 | } |
112e8700 | 6010 | uiout->field_string ("file", |
cbe56571 | 6011 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 6012 | file_name_style.style ()); |
112e8700 | 6013 | uiout->text (":"); |
05cba821 | 6014 | |
112e8700 SM |
6015 | if (uiout->is_mi_like_p ()) |
6016 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6017 | |
381befee | 6018 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 6019 | } |
859825b8 | 6020 | else if (loc) |
0d381245 | 6021 | { |
d7e74731 | 6022 | string_file stb; |
170b53b2 | 6023 | |
d7e74731 | 6024 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6025 | demangle, ""); |
112e8700 | 6026 | uiout->field_stream ("at", stb); |
0d381245 | 6027 | } |
859825b8 | 6028 | else |
f00aae0f | 6029 | { |
d28cd78a TT |
6030 | uiout->field_string ("pending", |
6031 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
6032 | /* If extra_string is available, it could be holding a condition |
6033 | or dprintf arguments. In either case, make sure it is printed, | |
6034 | too, but only for non-MI streams. */ | |
112e8700 | 6035 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6036 | { |
6037 | if (b->type == bp_dprintf) | |
112e8700 | 6038 | uiout->text (","); |
f00aae0f | 6039 | else |
112e8700 | 6040 | uiout->text (" "); |
6f781ee3 | 6041 | uiout->text (b->extra_string.get ()); |
f00aae0f KS |
6042 | } |
6043 | } | |
6c95b8df | 6044 | |
b775012e LM |
6045 | if (loc && is_breakpoint (b) |
6046 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6047 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6048 | { | |
112e8700 SM |
6049 | uiout->text (" ("); |
6050 | uiout->field_string ("evaluated-by", | |
b775012e | 6051 | bp_location_condition_evaluator (loc)); |
112e8700 | 6052 | uiout->text (")"); |
b775012e | 6053 | } |
0d381245 VP |
6054 | } |
6055 | ||
269b11a2 PA |
6056 | static const char * |
6057 | bptype_string (enum bptype type) | |
c906108c | 6058 | { |
c4093a6a JM |
6059 | struct ep_type_description |
6060 | { | |
6061 | enum bptype type; | |
a121b7c1 | 6062 | const char *description; |
c4093a6a JM |
6063 | }; |
6064 | static struct ep_type_description bptypes[] = | |
c906108c | 6065 | { |
c5aa993b JM |
6066 | {bp_none, "?deleted?"}, |
6067 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6068 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6069 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6070 | {bp_until, "until"}, |
6071 | {bp_finish, "finish"}, | |
6072 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6073 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6074 | {bp_read_watchpoint, "read watchpoint"}, |
6075 | {bp_access_watchpoint, "acc watchpoint"}, | |
6076 | {bp_longjmp, "longjmp"}, | |
6077 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6078 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6079 | {bp_exception, "exception"}, |
6080 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6081 | {bp_step_resume, "step resume"}, |
2c03e5be | 6082 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6083 | {bp_watchpoint_scope, "watchpoint scope"}, |
6084 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6085 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6086 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6087 | {bp_thread_event, "thread events"}, |
1900040c | 6088 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6089 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6090 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6091 | {bp_exception_master, "exception master"}, |
ce78b96d | 6092 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6093 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6094 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6095 | {bp_static_tracepoint, "static tracepoint"}, |
7b572efb | 6096 | {bp_static_marker_tracepoint, "static marker tracepoint"}, |
e7e0cddf | 6097 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6098 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6099 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6100 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6101 | }; |
269b11a2 PA |
6102 | |
6103 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6104 | || ((int) type != bptypes[(int) type].type)) | |
6105 | internal_error (__FILE__, __LINE__, | |
6106 | _("bptypes table does not describe type #%d."), | |
6107 | (int) type); | |
6108 | ||
6109 | return bptypes[(int) type].description; | |
6110 | } | |
6111 | ||
998580f1 MK |
6112 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6113 | For CLI, prefix the list with the string 'inf'. */ | |
6114 | ||
6115 | static void | |
6116 | output_thread_groups (struct ui_out *uiout, | |
6117 | const char *field_name, | |
5c632425 | 6118 | const std::vector<int> &inf_nums, |
998580f1 MK |
6119 | int mi_only) |
6120 | { | |
112e8700 | 6121 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6122 | |
6123 | /* For backward compatibility, don't display inferiors in CLI unless | |
6124 | there are several. Always display them for MI. */ | |
6125 | if (!is_mi && mi_only) | |
6126 | return; | |
6127 | ||
10f489e5 | 6128 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6129 | |
5c632425 | 6130 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6131 | { |
6132 | if (is_mi) | |
6133 | { | |
6134 | char mi_group[10]; | |
6135 | ||
5c632425 | 6136 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6137 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6138 | } |
6139 | else | |
6140 | { | |
6141 | if (i == 0) | |
112e8700 | 6142 | uiout->text (" inf "); |
998580f1 | 6143 | else |
112e8700 | 6144 | uiout->text (", "); |
998580f1 | 6145 | |
5c632425 | 6146 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6147 | } |
6148 | } | |
998580f1 MK |
6149 | } |
6150 | ||
a38118e5 PA |
6151 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6152 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6153 | info breakpoints" show the software breakpoint locations of | |
6154 | catchpoints, which are considered internal implementation | |
c01e038b TT |
6155 | detail. Returns true if RAW_LOC is false and if the breakpoint's |
6156 | print_one method did something; false otherwise. */ | |
269b11a2 | 6157 | |
c01e038b | 6158 | static bool |
269b11a2 PA |
6159 | print_one_breakpoint_location (struct breakpoint *b, |
6160 | struct bp_location *loc, | |
6161 | int loc_number, | |
6162 | struct bp_location **last_loc, | |
a38118e5 | 6163 | int allflag, bool raw_loc) |
269b11a2 PA |
6164 | { |
6165 | struct command_line *l; | |
c2c6d25f | 6166 | static char bpenables[] = "nynny"; |
c906108c | 6167 | |
79a45e25 | 6168 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6169 | int header_of_multiple = 0; |
6170 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6171 | struct value_print_options opts; |
6172 | ||
6173 | get_user_print_options (&opts); | |
0d381245 VP |
6174 | |
6175 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6176 | /* See comment in print_one_breakpoint concerning treatment of |
6177 | breakpoints with single disabled location. */ | |
0d381245 VP |
6178 | if (loc == NULL |
6179 | && (b->loc != NULL | |
b5fa468f TBA |
6180 | && (b->loc->next != NULL |
6181 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6182 | header_of_multiple = 1; |
6183 | if (loc == NULL) | |
6184 | loc = b->loc; | |
6185 | ||
c4093a6a JM |
6186 | annotate_record (); |
6187 | ||
6188 | /* 1 */ | |
6189 | annotate_field (0); | |
0d381245 | 6190 | if (part_of_multiple) |
528e1572 | 6191 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6192 | else |
381befee | 6193 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6194 | |
6195 | /* 2 */ | |
6196 | annotate_field (1); | |
0d381245 | 6197 | if (part_of_multiple) |
112e8700 | 6198 | uiout->field_skip ("type"); |
269b11a2 | 6199 | else |
112e8700 | 6200 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6201 | |
6202 | /* 3 */ | |
6203 | annotate_field (2); | |
0d381245 | 6204 | if (part_of_multiple) |
112e8700 | 6205 | uiout->field_skip ("disp"); |
0d381245 | 6206 | else |
112e8700 | 6207 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6208 | |
c4093a6a JM |
6209 | /* 4 */ |
6210 | annotate_field (3); | |
85c88e2a TBA |
6211 | /* For locations that are disabled because of an invalid condition, |
6212 | display "N*" on CLI, where "*" refers to a footnote below the | |
6213 | table. For MI, simply display a "N" without a footnote. */ | |
6214 | const char *N = (uiout->is_mi_like_p ()) ? "N" : "N*"; | |
0d381245 | 6215 | if (part_of_multiple) |
85c88e2a | 6216 | uiout->field_string ("enabled", (loc->disabled_by_cond ? N |
b5fa468f | 6217 | : (loc->enabled ? "y" : "n"))); |
0d381245 | 6218 | else |
112e8700 | 6219 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6220 | |
c4093a6a | 6221 | /* 5 and 6 */ |
c01e038b | 6222 | bool result = false; |
c47614fe | 6223 | if (!raw_loc && b->print_one (last_loc)) |
c01e038b | 6224 | result = true; |
3086aeae | 6225 | else |
a38118e5 PA |
6226 | { |
6227 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6228 | { |
6229 | struct watchpoint *w = (struct watchpoint *) b; | |
6230 | ||
6231 | /* Field 4, the address, is omitted (which makes the columns | |
6232 | not line up too nicely with the headers, but the effect | |
6233 | is relatively readable). */ | |
6234 | if (opts.addressprint) | |
112e8700 | 6235 | uiout->field_skip ("addr"); |
3a5c3e22 | 6236 | annotate_field (5); |
a4c50be3 | 6237 | uiout->field_string ("what", w->exp_string.get ()); |
3a5c3e22 | 6238 | } |
f06f1252 TT |
6239 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6240 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6241 | { |
6242 | if (opts.addressprint) | |
6243 | { | |
6244 | annotate_field (4); | |
6245 | if (header_of_multiple) | |
7f6aba03 TT |
6246 | uiout->field_string ("addr", "<MULTIPLE>", |
6247 | metadata_style.style ()); | |
a38118e5 | 6248 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6249 | uiout->field_string ("addr", "<PENDING>", |
6250 | metadata_style.style ()); | |
a38118e5 PA |
6251 | else |
6252 | uiout->field_core_addr ("addr", | |
6253 | loc->gdbarch, loc->address); | |
6254 | } | |
6255 | annotate_field (5); | |
6256 | if (!header_of_multiple) | |
6257 | print_breakpoint_location (b, loc); | |
6258 | if (b->loc) | |
6259 | *last_loc = b->loc; | |
6260 | } | |
6261 | } | |
6c95b8df | 6262 | |
998580f1 | 6263 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6264 | { |
5c632425 | 6265 | std::vector<int> inf_nums; |
998580f1 | 6266 | int mi_only = 1; |
6c95b8df | 6267 | |
08036331 | 6268 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6269 | { |
6270 | if (inf->pspace == loc->pspace) | |
5c632425 | 6271 | inf_nums.push_back (inf->num); |
6c95b8df | 6272 | } |
998580f1 | 6273 | |
dda83cd7 | 6274 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6275 | there are several. Always display for MI. */ |
6276 | if (allflag | |
6277 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6278 | && (program_spaces.size () > 1 |
998580f1 MK |
6279 | || number_of_inferiors () > 1) |
6280 | /* LOC is for existing B, it cannot be in | |
6281 | moribund_locations and thus having NULL OWNER. */ | |
6282 | && loc->owner->type != bp_catchpoint)) | |
6283 | mi_only = 0; | |
5c632425 | 6284 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6285 | } |
6286 | ||
4a306c9a | 6287 | if (!part_of_multiple) |
c4093a6a | 6288 | { |
4a306c9a JB |
6289 | if (b->thread != -1) |
6290 | { | |
6291 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6292 | "stop only in" line a little further down. */ |
112e8700 | 6293 | uiout->text (" thread "); |
381befee | 6294 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6295 | } |
6296 | else if (b->task != 0) | |
6297 | { | |
112e8700 | 6298 | uiout->text (" task "); |
381befee | 6299 | uiout->field_signed ("task", b->task); |
4a306c9a | 6300 | } |
c4093a6a | 6301 | } |
f1310107 | 6302 | |
112e8700 | 6303 | uiout->text ("\n"); |
f1310107 | 6304 | |
348d480f | 6305 | if (!part_of_multiple) |
c47614fe | 6306 | b->print_one_detail (uiout); |
f1310107 | 6307 | |
0d381245 | 6308 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6309 | { |
6310 | annotate_field (6); | |
112e8700 | 6311 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6312 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6313 | the frame ID. */ |
112e8700 | 6314 | uiout->field_core_addr ("frame", |
5af949e3 | 6315 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6316 | uiout->text ("\n"); |
c4093a6a JM |
6317 | } |
6318 | ||
28010a5d | 6319 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6320 | { |
6321 | annotate_field (7); | |
d77f58be | 6322 | if (is_tracepoint (b)) |
112e8700 | 6323 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6324 | else |
112e8700 | 6325 | uiout->text ("\tstop only if "); |
6f781ee3 | 6326 | uiout->field_string ("cond", b->cond_string.get ()); |
b775012e LM |
6327 | |
6328 | /* Print whether the target is doing the breakpoint's condition | |
6329 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6330 | if (is_breakpoint (b) | |
6331 | && breakpoint_condition_evaluation_mode () | |
6332 | == condition_evaluation_target) | |
6333 | { | |
6a831f06 PA |
6334 | uiout->message (" (%pF evals)", |
6335 | string_field ("evaluated-by", | |
6336 | bp_condition_evaluator (b))); | |
b775012e | 6337 | } |
112e8700 | 6338 | uiout->text ("\n"); |
0101ce28 JJ |
6339 | } |
6340 | ||
0d381245 | 6341 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6342 | { |
4a64f543 | 6343 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6344 | uiout->text ("\tstop only in thread "); |
6345 | if (uiout->is_mi_like_p ()) | |
381befee | 6346 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6347 | else |
6348 | { | |
6349 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6350 | ||
112e8700 | 6351 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6352 | } |
112e8700 | 6353 | uiout->text ("\n"); |
c4093a6a JM |
6354 | } |
6355 | ||
556ec64d YQ |
6356 | if (!part_of_multiple) |
6357 | { | |
6358 | if (b->hit_count) | |
31f56a27 YQ |
6359 | { |
6360 | /* FIXME should make an annotation for this. */ | |
6361 | if (is_catchpoint (b)) | |
112e8700 | 6362 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6363 | else if (is_tracepoint (b)) |
112e8700 | 6364 | uiout->text ("\ttracepoint"); |
31f56a27 | 6365 | else |
112e8700 SM |
6366 | uiout->text ("\tbreakpoint"); |
6367 | uiout->text (" already hit "); | |
381befee | 6368 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6369 | if (b->hit_count == 1) |
112e8700 | 6370 | uiout->text (" time\n"); |
31f56a27 | 6371 | else |
112e8700 | 6372 | uiout->text (" times\n"); |
31f56a27 | 6373 | } |
556ec64d YQ |
6374 | else |
6375 | { | |
31f56a27 | 6376 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6377 | if (uiout->is_mi_like_p ()) |
381befee | 6378 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6379 | } |
6380 | } | |
8b93c638 | 6381 | |
0d381245 | 6382 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6383 | { |
6384 | annotate_field (8); | |
6a831f06 PA |
6385 | uiout->message ("\tignore next %pF hits\n", |
6386 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6387 | } |
059fb39f | 6388 | |
816338b5 SS |
6389 | /* Note that an enable count of 1 corresponds to "enable once" |
6390 | behavior, which is reported by the combination of enablement and | |
6391 | disposition, so we don't need to mention it here. */ | |
6392 | if (!part_of_multiple && b->enable_count > 1) | |
6393 | { | |
6394 | annotate_field (8); | |
112e8700 | 6395 | uiout->text ("\tdisable after "); |
816338b5 SS |
6396 | /* Tweak the wording to clarify that ignore and enable counts |
6397 | are distinct, and have additive effect. */ | |
6398 | if (b->ignore_count) | |
112e8700 | 6399 | uiout->text ("additional "); |
816338b5 | 6400 | else |
112e8700 | 6401 | uiout->text ("next "); |
381befee | 6402 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6403 | uiout->text (" hits\n"); |
816338b5 SS |
6404 | } |
6405 | ||
f196051f SS |
6406 | if (!part_of_multiple && is_tracepoint (b)) |
6407 | { | |
6408 | struct tracepoint *tp = (struct tracepoint *) b; | |
6409 | ||
6410 | if (tp->traceframe_usage) | |
6411 | { | |
112e8700 | 6412 | uiout->text ("\ttrace buffer usage "); |
381befee | 6413 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6414 | uiout->text (" bytes\n"); |
f196051f SS |
6415 | } |
6416 | } | |
d3ce09f5 | 6417 | |
d1b0a7bf | 6418 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6419 | if (!part_of_multiple && l) |
c4093a6a JM |
6420 | { |
6421 | annotate_field (9); | |
2e783024 | 6422 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6423 | print_command_lines (uiout, l, 4); |
c4093a6a | 6424 | } |
d24317b4 | 6425 | |
d9b3f62e | 6426 | if (is_tracepoint (b)) |
1042e4c0 | 6427 | { |
d9b3f62e PA |
6428 | struct tracepoint *t = (struct tracepoint *) b; |
6429 | ||
6430 | if (!part_of_multiple && t->pass_count) | |
6431 | { | |
6432 | annotate_field (10); | |
112e8700 | 6433 | uiout->text ("\tpass count "); |
381befee | 6434 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6435 | uiout->text (" \n"); |
d9b3f62e | 6436 | } |
f2a8bc8a YQ |
6437 | |
6438 | /* Don't display it when tracepoint or tracepoint location is | |
6439 | pending. */ | |
6440 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6441 | { | |
6442 | annotate_field (11); | |
6443 | ||
112e8700 SM |
6444 | if (uiout->is_mi_like_p ()) |
6445 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6446 | loc->inserted ? "y" : "n"); |
6447 | else | |
6448 | { | |
6449 | if (loc->inserted) | |
112e8700 | 6450 | uiout->text ("\t"); |
f2a8bc8a | 6451 | else |
112e8700 SM |
6452 | uiout->text ("\tnot "); |
6453 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6454 | } |
6455 | } | |
1042e4c0 SS |
6456 | } |
6457 | ||
112e8700 | 6458 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6459 | { |
3a5c3e22 PA |
6460 | if (is_watchpoint (b)) |
6461 | { | |
6462 | struct watchpoint *w = (struct watchpoint *) b; | |
6463 | ||
a4c50be3 | 6464 | uiout->field_string ("original-location", w->exp_string.get ()); |
3a5c3e22 | 6465 | } |
f00aae0f | 6466 | else if (b->location != NULL |
d28cd78a | 6467 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6468 | uiout->field_string ("original-location", |
d28cd78a | 6469 | event_location_to_string (b->location.get ())); |
d24317b4 | 6470 | } |
c01e038b TT |
6471 | |
6472 | return result; | |
c4093a6a | 6473 | } |
c5aa993b | 6474 | |
13674803 SM |
6475 | /* See breakpoint.h. */ |
6476 | ||
6477 | bool fix_multi_location_breakpoint_output_globally = false; | |
6478 | ||
0d381245 VP |
6479 | static void |
6480 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6481 | struct bp_location **last_loc, |
6c95b8df | 6482 | int allflag) |
0d381245 | 6483 | { |
79a45e25 | 6484 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6485 | bool use_fixed_output |
6486 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6487 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6488 | |
b4be1b06 | 6489 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
c01e038b TT |
6490 | bool printed = print_one_breakpoint_location (b, NULL, 0, last_loc, |
6491 | allflag, false); | |
8d3788bd | 6492 | |
b4be1b06 SM |
6493 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6494 | are outside. */ | |
6495 | if (!use_fixed_output) | |
6496 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6497 | |
6498 | /* If this breakpoint has custom print function, | |
6499 | it's already printed. Otherwise, print individual | |
6500 | locations, if any. */ | |
c01e038b | 6501 | if (!printed || allflag) |
0d381245 | 6502 | { |
4a64f543 MS |
6503 | /* If breakpoint has a single location that is disabled, we |
6504 | print it as if it had several locations, since otherwise it's | |
6505 | hard to represent "breakpoint enabled, location disabled" | |
6506 | situation. | |
6507 | ||
6508 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6509 | internally, that's not a property exposed to users. |
6510 | ||
6511 | Likewise, while catchpoints may be implemented with | |
6512 | breakpoints (e.g., catch throw), that's not a property | |
6513 | exposed to users. We do however display the internal | |
6514 | breakpoint locations with "maint info breakpoints". */ | |
6515 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6516 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6517 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6518 | && (allflag |
b5fa468f TBA |
6519 | || (b->loc && (b->loc->next |
6520 | || !b->loc->enabled | |
6521 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6522 | { |
b4be1b06 SM |
6523 | gdb::optional<ui_out_emit_list> locations_list; |
6524 | ||
6525 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6526 | MI record. For later versions, place breakpoint locations in a | |
6527 | list. */ | |
6528 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6529 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6530 | |
b4be1b06 | 6531 | int n = 1; |
40cb8ca5 | 6532 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6533 | { |
b4be1b06 | 6534 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6535 | print_one_breakpoint_location (b, loc, n, last_loc, |
6536 | allflag, allflag); | |
40cb8ca5 | 6537 | n++; |
8d3788bd | 6538 | } |
0d381245 VP |
6539 | } |
6540 | } | |
6541 | } | |
6542 | ||
a6d9a66e UW |
6543 | static int |
6544 | breakpoint_address_bits (struct breakpoint *b) | |
6545 | { | |
6546 | int print_address_bits = 0; | |
a6d9a66e | 6547 | |
40cb8ca5 | 6548 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6549 | { |
6e14e441 PA |
6550 | if (!bl_address_is_meaningful (loc)) |
6551 | continue; | |
c7437ca6 | 6552 | |
6e14e441 | 6553 | int addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6554 | if (addr_bit > print_address_bits) |
6555 | print_address_bits = addr_bit; | |
6556 | } | |
6557 | ||
6558 | return print_address_bits; | |
6559 | } | |
0d381245 | 6560 | |
65630365 | 6561 | /* See breakpoint.h. */ |
c5aa993b | 6562 | |
65630365 PA |
6563 | void |
6564 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6565 | { |
a6d9a66e | 6566 | struct bp_location *dummy_loc = NULL; |
65630365 | 6567 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6568 | } |
c5aa993b | 6569 | |
09d682a4 TT |
6570 | /* Return true if this breakpoint was set by the user, false if it is |
6571 | internal or momentary. */ | |
6572 | ||
6573 | int | |
6574 | user_breakpoint_p (struct breakpoint *b) | |
6575 | { | |
46c6471b | 6576 | return b->number > 0; |
09d682a4 TT |
6577 | } |
6578 | ||
93daf339 TT |
6579 | /* See breakpoint.h. */ |
6580 | ||
6581 | int | |
6582 | pending_breakpoint_p (struct breakpoint *b) | |
6583 | { | |
6584 | return b->loc == NULL; | |
6585 | } | |
6586 | ||
5c458ae8 SM |
6587 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6588 | ||
6589 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6590 | understood by number_or_range_parser. Only breakpoints included in this | |
6591 | list are then printed. | |
6592 | ||
6593 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6594 | ||
6595 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6596 | ones for which it returns true. | |
6597 | ||
6598 | Return the total number of breakpoints listed. */ | |
c906108c | 6599 | |
d77f58be | 6600 | static int |
5c458ae8 | 6601 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6602 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6603 | { |
a6d9a66e | 6604 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6605 | int nr_printable_breakpoints; |
79a45b7d | 6606 | struct value_print_options opts; |
a6d9a66e | 6607 | int print_address_bits = 0; |
269b11a2 | 6608 | int print_type_col_width = 14; |
79a45e25 | 6609 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6610 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6611 | |
79a45b7d TT |
6612 | get_user_print_options (&opts); |
6613 | ||
4a64f543 MS |
6614 | /* Compute the number of rows in the table, as well as the size |
6615 | required for address fields. */ | |
7f3b0473 | 6616 | nr_printable_breakpoints = 0; |
43892fdf | 6617 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6618 | { |
6619 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6620 | if (filter && !filter (b)) | |
6621 | continue; | |
6622 | ||
5c458ae8 | 6623 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6624 | accept. Skip the others. */ |
5c458ae8 | 6625 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6626 | { |
5c458ae8 | 6627 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6628 | continue; |
5c458ae8 | 6629 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6630 | continue; |
6631 | } | |
269b11a2 | 6632 | |
5c458ae8 | 6633 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6634 | { |
6635 | int addr_bit, type_len; | |
a6d9a66e | 6636 | |
e5a67952 MS |
6637 | addr_bit = breakpoint_address_bits (b); |
6638 | if (addr_bit > print_address_bits) | |
6639 | print_address_bits = addr_bit; | |
269b11a2 | 6640 | |
e5a67952 MS |
6641 | type_len = strlen (bptype_string (b->type)); |
6642 | if (type_len > print_type_col_width) | |
6643 | print_type_col_width = type_len; | |
6644 | ||
6645 | nr_printable_breakpoints++; | |
6646 | } | |
6647 | } | |
7f3b0473 | 6648 | |
4a2b031d TT |
6649 | { |
6650 | ui_out_emit_table table_emitter (uiout, | |
6651 | opts.addressprint ? 6 : 5, | |
6652 | nr_printable_breakpoints, | |
6653 | "BreakpointTable"); | |
6654 | ||
6655 | if (nr_printable_breakpoints > 0) | |
6656 | annotate_breakpoints_headers (); | |
6657 | if (nr_printable_breakpoints > 0) | |
6658 | annotate_field (0); | |
6659 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6660 | if (nr_printable_breakpoints > 0) | |
6661 | annotate_field (1); | |
6662 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6663 | if (nr_printable_breakpoints > 0) | |
6664 | annotate_field (2); | |
6665 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6666 | if (nr_printable_breakpoints > 0) | |
6667 | annotate_field (3); | |
6668 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6669 | if (opts.addressprint) | |
6670 | { | |
6671 | if (nr_printable_breakpoints > 0) | |
6672 | annotate_field (4); | |
6673 | if (print_address_bits <= 32) | |
6674 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6675 | else | |
6676 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6677 | } | |
6678 | if (nr_printable_breakpoints > 0) | |
6679 | annotate_field (5); | |
6680 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6681 | uiout->table_body (); | |
6682 | if (nr_printable_breakpoints > 0) | |
6683 | annotate_breakpoints_table (); | |
6684 | ||
43892fdf | 6685 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6686 | { |
6687 | QUIT; | |
6688 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6689 | if (filter && !filter (b)) | |
6690 | continue; | |
e5a67952 | 6691 | |
5c458ae8 | 6692 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6693 | accept. Skip the others. */ |
e5a67952 | 6694 | |
5c458ae8 | 6695 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6696 | { |
5c458ae8 | 6697 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6698 | { |
5c458ae8 | 6699 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6700 | continue; |
6701 | } | |
6702 | else /* all others */ | |
6703 | { | |
5c458ae8 | 6704 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6705 | continue; |
6706 | } | |
6707 | } | |
6708 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6709 | show_internal is set. */ |
6710 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6711 | { |
6712 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6713 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6714 | if (loc->disabled_by_cond) |
6715 | has_disabled_by_cond_location = true; | |
6716 | } | |
4a2b031d TT |
6717 | } |
6718 | } | |
698384cd | 6719 | |
7f3b0473 | 6720 | if (nr_printable_breakpoints == 0) |
c906108c | 6721 | { |
4a64f543 MS |
6722 | /* If there's a filter, let the caller decide how to report |
6723 | empty list. */ | |
d77f58be SS |
6724 | if (!filter) |
6725 | { | |
5c458ae8 | 6726 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6727 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6728 | else |
112e8700 | 6729 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6730 | bp_num_list); |
d77f58be | 6731 | } |
c906108c SS |
6732 | } |
6733 | else | |
c4093a6a | 6734 | { |
a6d9a66e UW |
6735 | if (last_loc && !server_command) |
6736 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6737 | |
85c88e2a | 6738 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6739 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6740 | "location.\n")); | |
c4093a6a | 6741 | } |
c906108c | 6742 | |
4a64f543 | 6743 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6744 | there have been breakpoints? */ |
c906108c | 6745 | annotate_breakpoints_table_end (); |
d77f58be SS |
6746 | |
6747 | return nr_printable_breakpoints; | |
c906108c SS |
6748 | } |
6749 | ||
ad443146 SS |
6750 | /* Display the value of default-collect in a way that is generally |
6751 | compatible with the breakpoint list. */ | |
6752 | ||
6753 | static void | |
6754 | default_collect_info (void) | |
6755 | { | |
79a45e25 PA |
6756 | struct ui_out *uiout = current_uiout; |
6757 | ||
ad443146 SS |
6758 | /* If it has no value (which is frequently the case), say nothing; a |
6759 | message like "No default-collect." gets in user's face when it's | |
6760 | not wanted. */ | |
e0700ba4 | 6761 | if (default_collect.empty ()) |
ad443146 SS |
6762 | return; |
6763 | ||
6764 | /* The following phrase lines up nicely with per-tracepoint collect | |
6765 | actions. */ | |
112e8700 SM |
6766 | uiout->text ("default collect "); |
6767 | uiout->field_string ("default-collect", default_collect); | |
6768 | uiout->text (" \n"); | |
ad443146 SS |
6769 | } |
6770 | ||
c906108c | 6771 | static void |
0b39b52e | 6772 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6773 | { |
5c458ae8 | 6774 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6775 | |
6776 | default_collect_info (); | |
d77f58be SS |
6777 | } |
6778 | ||
6779 | static void | |
1d12d88f | 6780 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6781 | { |
5c458ae8 | 6782 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6783 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6784 | |
6785 | if (num_printed == 0) | |
6786 | { | |
e5a67952 | 6787 | if (args == NULL || *args == '\0') |
112e8700 | 6788 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6789 | else |
112e8700 | 6790 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6791 | } |
c906108c SS |
6792 | } |
6793 | ||
7a292a7a | 6794 | static void |
4495129a | 6795 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6796 | { |
5c458ae8 | 6797 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6798 | |
6799 | default_collect_info (); | |
c906108c SS |
6800 | } |
6801 | ||
0d381245 | 6802 | static int |
714835d5 | 6803 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6804 | struct program_space *pspace, |
714835d5 | 6805 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6806 | { |
40cb8ca5 | 6807 | for (bp_location *bl : b->locations ()) |
0d381245 | 6808 | { |
6c95b8df PA |
6809 | if (bl->pspace == pspace |
6810 | && bl->address == pc | |
0d381245 VP |
6811 | && (!overlay_debugging || bl->section == section)) |
6812 | return 1; | |
6813 | } | |
6814 | return 0; | |
6815 | } | |
6816 | ||
bd21b6c9 | 6817 | /* See breakpoint.h. */ |
c906108c | 6818 | |
bd21b6c9 | 6819 | void |
6c95b8df PA |
6820 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6821 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6822 | struct obj_section *section, int thread) |
c906108c | 6823 | { |
52f0bd74 | 6824 | int others = 0; |
c906108c | 6825 | |
43892fdf | 6826 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6827 | others += (user_breakpoint_p (b) |
dda83cd7 | 6828 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6829 | |
c906108c SS |
6830 | if (others > 0) |
6831 | { | |
a3f17187 | 6832 | if (others == 1) |
6cb06a8c | 6833 | gdb_printf (_("Note: breakpoint ")); |
a3f17187 | 6834 | else /* if (others == ???) */ |
6cb06a8c | 6835 | gdb_printf (_("Note: breakpoints ")); |
43892fdf | 6836 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6837 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6838 | { |
6839 | others--; | |
6cb06a8c | 6840 | gdb_printf ("%d", b->number); |
0d381245 | 6841 | if (b->thread == -1 && thread != -1) |
6cb06a8c | 6842 | gdb_printf (" (all threads)"); |
0d381245 | 6843 | else if (b->thread != -1) |
6cb06a8c TT |
6844 | gdb_printf (" (thread %d)", b->thread); |
6845 | gdb_printf ("%s%s ", | |
6846 | ((b->enable_state == bp_disabled | |
6847 | || b->enable_state == bp_call_disabled) | |
6848 | ? " (disabled)" | |
6849 | : ""), | |
6850 | (others > 1) ? "," | |
6851 | : ((others == 1) ? " and" : "")); | |
0d381245 | 6852 | } |
6a831f06 PA |
6853 | current_uiout->message (_("also set at pc %ps.\n"), |
6854 | styled_string (address_style.style (), | |
6855 | paddress (gdbarch, pc))); | |
c906108c SS |
6856 | } |
6857 | } | |
6858 | \f | |
c906108c | 6859 | |
cb1e4e32 PA |
6860 | /* Return true iff it is meaningful to use the address member of LOC. |
6861 | For some breakpoint types, the locations' address members are | |
6862 | irrelevant and it makes no sense to attempt to compare them to | |
6863 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6864 | |
cb1e4e32 PA |
6865 | More specifically, software watchpoints and catchpoints that are |
6866 | not backed by breakpoints always have a zero valued location | |
6867 | address and we don't want to mark breakpoints of any of these types | |
6868 | to be a duplicate of an actual breakpoint location at address | |
6869 | zero. */ | |
e4f237da | 6870 | |
cb1e4e32 PA |
6871 | static bool |
6872 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6873 | { |
cb1e4e32 | 6874 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6875 | } |
6876 | ||
6877 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6878 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6879 | ||
6880 | static int | |
4a64f543 MS |
6881 | watchpoint_locations_match (struct bp_location *loc1, |
6882 | struct bp_location *loc2) | |
2d134ed3 | 6883 | { |
3a5c3e22 PA |
6884 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6885 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6886 | ||
6887 | /* Both of them must exist. */ | |
6888 | gdb_assert (w1 != NULL); | |
6889 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6890 | |
4a64f543 MS |
6891 | /* If the target can evaluate the condition expression in hardware, |
6892 | then we we need to insert both watchpoints even if they are at | |
6893 | the same place. Otherwise the watchpoint will only trigger when | |
6894 | the condition of whichever watchpoint was inserted evaluates to | |
6895 | true, not giving a chance for GDB to check the condition of the | |
6896 | other watchpoint. */ | |
3a5c3e22 | 6897 | if ((w1->cond_exp |
4a64f543 MS |
6898 | && target_can_accel_watchpoint_condition (loc1->address, |
6899 | loc1->length, | |
0cf6dd15 | 6900 | loc1->watchpoint_type, |
4d01a485 | 6901 | w1->cond_exp.get ())) |
3a5c3e22 | 6902 | || (w2->cond_exp |
4a64f543 MS |
6903 | && target_can_accel_watchpoint_condition (loc2->address, |
6904 | loc2->length, | |
0cf6dd15 | 6905 | loc2->watchpoint_type, |
4d01a485 | 6906 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6907 | return 0; |
6908 | ||
85d721b8 PA |
6909 | /* Note that this checks the owner's type, not the location's. In |
6910 | case the target does not support read watchpoints, but does | |
6911 | support access watchpoints, we'll have bp_read_watchpoint | |
6912 | watchpoints with hw_access locations. Those should be considered | |
6913 | duplicates of hw_read locations. The hw_read locations will | |
6914 | become hw_access locations later. */ | |
2d134ed3 PA |
6915 | return (loc1->owner->type == loc2->owner->type |
6916 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6917 | && loc1->address == loc2->address | |
6918 | && loc1->length == loc2->length); | |
e4f237da KB |
6919 | } |
6920 | ||
31e77af2 | 6921 | /* See breakpoint.h. */ |
6c95b8df | 6922 | |
31e77af2 | 6923 | int |
accd0bcd YQ |
6924 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6925 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6926 | { |
f5656ead | 6927 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6928 | || aspace1 == aspace2) |
6929 | && addr1 == addr2); | |
6930 | } | |
6931 | ||
f1310107 TJB |
6932 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6933 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6934 | matches ASPACE2. On targets that have global breakpoints, the address | |
6935 | space doesn't really matter. */ | |
6936 | ||
6937 | static int | |
accd0bcd YQ |
6938 | breakpoint_address_match_range (const address_space *aspace1, |
6939 | CORE_ADDR addr1, | |
6940 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6941 | CORE_ADDR addr2) |
6942 | { | |
f5656ead | 6943 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6944 | || aspace1 == aspace2) |
6945 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6946 | } | |
6947 | ||
6948 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6949 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6950 | matches the breakpoint's address space. On targets that have global | |
6951 | breakpoints, the address space doesn't really matter. */ | |
6952 | ||
6953 | static int | |
6954 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6955 | const address_space *aspace, |
f1310107 TJB |
6956 | CORE_ADDR addr) |
6957 | { | |
6958 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6959 | aspace, addr) | |
6960 | || (bl->length | |
6961 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6962 | bl->address, bl->length, | |
6963 | aspace, addr))); | |
6964 | } | |
6965 | ||
d35ae833 PA |
6966 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6967 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6968 | match happens only if ASPACE matches the breakpoint's address | |
6969 | space. On targets that have global breakpoints, the address space | |
6970 | doesn't really matter. */ | |
6971 | ||
6972 | static int | |
6973 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6974 | const address_space *aspace, |
d35ae833 PA |
6975 | CORE_ADDR addr, int len) |
6976 | { | |
6977 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6978 | || bl->pspace->aspace == aspace) | |
6979 | { | |
6980 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6981 | ||
6982 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6983 | return 1; | |
6984 | } | |
6985 | return 0; | |
6986 | } | |
6987 | ||
1e4d1764 YQ |
6988 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6989 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6990 | true, otherwise returns false. */ | |
6991 | ||
6992 | static int | |
6993 | tracepoint_locations_match (struct bp_location *loc1, | |
6994 | struct bp_location *loc2) | |
6995 | { | |
6996 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6997 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6998 | locations at the same address of different tracepoints are regarded as | |
6999 | different locations. */ | |
7000 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7001 | else | |
7002 | return 0; | |
7003 | } | |
7004 | ||
2d134ed3 | 7005 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 7006 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
7007 | the same location. If SW_HW_BPS_MATCH is true, then software |
7008 | breakpoint locations and hardware breakpoint locations match, | |
7009 | otherwise they don't. */ | |
2d134ed3 PA |
7010 | |
7011 | static int | |
7f32a4d5 PA |
7012 | breakpoint_locations_match (struct bp_location *loc1, |
7013 | struct bp_location *loc2, | |
7014 | bool sw_hw_bps_match) | |
2d134ed3 | 7015 | { |
2bdf28a0 JK |
7016 | int hw_point1, hw_point2; |
7017 | ||
7018 | /* Both of them must not be in moribund_locations. */ | |
7019 | gdb_assert (loc1->owner != NULL); | |
7020 | gdb_assert (loc2->owner != NULL); | |
7021 | ||
7022 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7023 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7024 | |
7025 | if (hw_point1 != hw_point2) | |
7026 | return 0; | |
7027 | else if (hw_point1) | |
7028 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7029 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7030 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7031 | else |
7f32a4d5 PA |
7032 | /* We compare bp_location.length in order to cover ranged |
7033 | breakpoints. Keep this in sync with | |
7034 | bp_location_is_less_than. */ | |
f1310107 TJB |
7035 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
7036 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 7037 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 7038 | && loc1->length == loc2->length); |
2d134ed3 PA |
7039 | } |
7040 | ||
76897487 KB |
7041 | static void |
7042 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 7043 | int bnum, int have_bnum) |
76897487 | 7044 | { |
f63fbe86 MS |
7045 | /* The longest string possibly returned by hex_string_custom |
7046 | is 50 chars. These must be at least that big for safety. */ | |
7047 | char astr1[64]; | |
7048 | char astr2[64]; | |
76897487 | 7049 | |
bb599908 PH |
7050 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7051 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7052 | if (have_bnum) |
8a3fe4f8 | 7053 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 7054 | bnum, astr1, astr2); |
76897487 | 7055 | else |
8a3fe4f8 | 7056 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7057 | } |
7058 | ||
4a64f543 MS |
7059 | /* Adjust a breakpoint's address to account for architectural |
7060 | constraints on breakpoint placement. Return the adjusted address. | |
7061 | Note: Very few targets require this kind of adjustment. For most | |
7062 | targets, this function is simply the identity function. */ | |
76897487 KB |
7063 | |
7064 | static CORE_ADDR | |
a6d9a66e UW |
7065 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7066 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7067 | { |
a0de8c21 YQ |
7068 | if (bptype == bp_watchpoint |
7069 | || bptype == bp_hardware_watchpoint | |
7070 | || bptype == bp_read_watchpoint | |
7071 | || bptype == bp_access_watchpoint | |
7072 | || bptype == bp_catchpoint) | |
88f7da05 KB |
7073 | { |
7074 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 7075 | have their addresses modified. */ |
88f7da05 KB |
7076 | return bpaddr; |
7077 | } | |
7c16b83e PA |
7078 | else if (bptype == bp_single_step) |
7079 | { | |
7080 | /* Single-step breakpoints should not have their addresses | |
7081 | modified. If there's any architectural constrain that | |
7082 | applies to this address, then it should have already been | |
7083 | taken into account when the breakpoint was created in the | |
7084 | first place. If we didn't do this, stepping through e.g., | |
7085 | Thumb-2 IT blocks would break. */ | |
7086 | return bpaddr; | |
7087 | } | |
76897487 KB |
7088 | else |
7089 | { | |
a0de8c21 YQ |
7090 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7091 | ||
7092 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7093 | { | |
7094 | /* Some targets have architectural constraints on the placement | |
7095 | of breakpoint instructions. Obtain the adjusted address. */ | |
7096 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7097 | } | |
76897487 | 7098 | |
a0de8c21 | 7099 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7100 | |
7101 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7102 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7103 | is required. */ |
7104 | if (adjusted_bpaddr != bpaddr) | |
7105 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7106 | ||
7107 | return adjusted_bpaddr; | |
7108 | } | |
7109 | } | |
7110 | ||
cb1e4e32 PA |
7111 | static bp_loc_type |
7112 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7113 | { |
cb1e4e32 | 7114 | switch (type) |
e049a4b5 DJ |
7115 | { |
7116 | case bp_breakpoint: | |
7c16b83e | 7117 | case bp_single_step: |
e049a4b5 DJ |
7118 | case bp_until: |
7119 | case bp_finish: | |
7120 | case bp_longjmp: | |
7121 | case bp_longjmp_resume: | |
e2e4d78b | 7122 | case bp_longjmp_call_dummy: |
186c406b TT |
7123 | case bp_exception: |
7124 | case bp_exception_resume: | |
e049a4b5 | 7125 | case bp_step_resume: |
2c03e5be | 7126 | case bp_hp_step_resume: |
e049a4b5 DJ |
7127 | case bp_watchpoint_scope: |
7128 | case bp_call_dummy: | |
aa7d318d | 7129 | case bp_std_terminate: |
e049a4b5 DJ |
7130 | case bp_shlib_event: |
7131 | case bp_thread_event: | |
7132 | case bp_overlay_event: | |
4efc6507 | 7133 | case bp_jit_event: |
0fd8e87f | 7134 | case bp_longjmp_master: |
aa7d318d | 7135 | case bp_std_terminate_master: |
186c406b | 7136 | case bp_exception_master: |
0e30163f JK |
7137 | case bp_gnu_ifunc_resolver: |
7138 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7139 | case bp_dprintf: |
cb1e4e32 | 7140 | return bp_loc_software_breakpoint; |
e049a4b5 | 7141 | case bp_hardware_breakpoint: |
cb1e4e32 | 7142 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7143 | case bp_hardware_watchpoint: |
7144 | case bp_read_watchpoint: | |
7145 | case bp_access_watchpoint: | |
cb1e4e32 | 7146 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7147 | case bp_watchpoint: |
6e14e441 | 7148 | return bp_loc_software_watchpoint; |
ce78b96d | 7149 | case bp_catchpoint: |
15c3d785 PA |
7150 | case bp_tracepoint: |
7151 | case bp_fast_tracepoint: | |
0fb4aa4b | 7152 | case bp_static_tracepoint: |
7b572efb | 7153 | case bp_static_marker_tracepoint: |
cb1e4e32 | 7154 | return bp_loc_other; |
e049a4b5 | 7155 | default: |
e2e0b3e5 | 7156 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7157 | } |
cb1e4e32 PA |
7158 | } |
7159 | ||
7160 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7161 | { | |
7162 | this->owner = owner; | |
7163 | this->cond_bytecode = NULL; | |
7164 | this->shlib_disabled = 0; | |
7165 | this->enabled = 1; | |
b5fa468f | 7166 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7167 | |
7168 | this->loc_type = type; | |
e049a4b5 | 7169 | |
cb1e4e32 PA |
7170 | if (this->loc_type == bp_loc_software_breakpoint |
7171 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7172 | mark_breakpoint_location_modified (this); | |
7173 | ||
b6433ede | 7174 | incref (); |
cb1e4e32 PA |
7175 | } |
7176 | ||
7177 | bp_location::bp_location (breakpoint *owner) | |
7178 | : bp_location::bp_location (owner, | |
7179 | bp_location_from_bp_type (owner->type)) | |
7180 | { | |
28010a5d PA |
7181 | } |
7182 | ||
f431efe5 PA |
7183 | /* Decrement reference count. If the reference count reaches 0, |
7184 | destroy the bp_location. Sets *BLP to NULL. */ | |
7185 | ||
7186 | static void | |
7187 | decref_bp_location (struct bp_location **blp) | |
7188 | { | |
b6433ede | 7189 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7190 | *blp = NULL; |
7191 | } | |
7192 | ||
346774a9 | 7193 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7194 | |
b270e6f9 TT |
7195 | static breakpoint * |
7196 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7197 | { |
346774a9 | 7198 | struct breakpoint *b1; |
b270e6f9 | 7199 | struct breakpoint *result = b.get (); |
c906108c | 7200 | |
346774a9 PA |
7201 | /* Add this breakpoint to the end of the chain so that a list of |
7202 | breakpoints will come out in order of increasing numbers. */ | |
7203 | ||
7204 | b1 = breakpoint_chain; | |
7205 | if (b1 == 0) | |
b270e6f9 | 7206 | breakpoint_chain = b.release (); |
346774a9 PA |
7207 | else |
7208 | { | |
7209 | while (b1->next) | |
7210 | b1 = b1->next; | |
b270e6f9 | 7211 | b1->next = b.release (); |
346774a9 | 7212 | } |
b270e6f9 TT |
7213 | |
7214 | return result; | |
346774a9 PA |
7215 | } |
7216 | ||
0ba852ab | 7217 | /* Initialize loc->function_name. */ |
0e30163f | 7218 | |
0d381245 | 7219 | static void |
0ba852ab | 7220 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7221 | { |
2bdf28a0 JK |
7222 | gdb_assert (loc->owner != NULL); |
7223 | ||
0d381245 | 7224 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7225 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7226 | || is_tracepoint (loc->owner)) |
0d381245 | 7227 | { |
2c02bd72 | 7228 | const char *function_name; |
0e30163f | 7229 | |
3467ec66 | 7230 | if (loc->msymbol != NULL |
60f62e2b SM |
7231 | && (loc->msymbol->type () == mst_text_gnu_ifunc |
7232 | || loc->msymbol->type () == mst_data_gnu_ifunc)) | |
0e30163f JK |
7233 | { |
7234 | struct breakpoint *b = loc->owner; | |
7235 | ||
c9d95fa3 | 7236 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7237 | |
7238 | if (b->type == bp_breakpoint && b->loc == loc | |
7239 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7240 | { |
7241 | /* Create only the whole new breakpoint of this type but do not | |
7242 | mess more complicated breakpoints with multiple locations. */ | |
7243 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7244 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7245 | breakpoint. */ |
3467ec66 | 7246 | loc->related_address = loc->address; |
0e30163f JK |
7247 | } |
7248 | } | |
3467ec66 PA |
7249 | else |
7250 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7251 | |
2c02bd72 | 7252 | if (function_name) |
23d6ee64 | 7253 | loc->function_name = make_unique_xstrdup (function_name); |
0d381245 VP |
7254 | } |
7255 | } | |
7256 | ||
a6d9a66e | 7257 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7258 | struct gdbarch * |
a6d9a66e UW |
7259 | get_sal_arch (struct symtab_and_line sal) |
7260 | { | |
7261 | if (sal.section) | |
08feed99 | 7262 | return sal.section->objfile->arch (); |
a6d9a66e | 7263 | if (sal.symtab) |
3c86fae3 | 7264 | return sal.symtab->compunit ()->objfile ()->arch (); |
a6d9a66e UW |
7265 | |
7266 | return NULL; | |
7267 | } | |
7268 | ||
346774a9 PA |
7269 | /* Low level routine for partially initializing a breakpoint of type |
7270 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7271 | file name, and line number are provided by SAL. |
0d381245 VP |
7272 | |
7273 | It is expected that the caller will complete the initialization of | |
7274 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7275 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7276 | |
346774a9 | 7277 | static void |
73063f51 TT |
7278 | init_raw_breakpoint (struct breakpoint *b, struct symtab_and_line sal, |
7279 | enum bptype bptype) | |
0d381245 | 7280 | { |
06615628 | 7281 | b->add_location (sal); |
0d381245 | 7282 | |
6c95b8df PA |
7283 | if (bptype != bp_catchpoint) |
7284 | gdb_assert (sal.pspace != NULL); | |
7285 | ||
f8eba3c6 TT |
7286 | /* Store the program space that was used to set the breakpoint, |
7287 | except for ordinary breakpoints, which are independent of the | |
7288 | program space. */ | |
7289 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7290 | b->pspace = sal.pspace; | |
346774a9 | 7291 | } |
c906108c | 7292 | |
53a5351d | 7293 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7294 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7295 | initiated the operation. */ | |
c906108c SS |
7296 | |
7297 | void | |
186c406b | 7298 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7299 | { |
5d5658a1 | 7300 | int thread = tp->global_num; |
0fd8e87f UW |
7301 | |
7302 | /* To avoid having to rescan all objfile symbols at every step, | |
7303 | we maintain a list of continually-inserted but always disabled | |
7304 | longjmp "master" breakpoints. Here, we simply create momentary | |
7305 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7306 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7307 | if (b->pspace == current_program_space |
186c406b TT |
7308 | && (b->type == bp_longjmp_master |
7309 | || b->type == bp_exception_master)) | |
0fd8e87f | 7310 | { |
06edf0c0 PA |
7311 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7312 | struct breakpoint *clone; | |
cc59ec59 | 7313 | |
e2e4d78b JK |
7314 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7315 | after their removal. */ | |
9efa3c7f | 7316 | clone = momentary_breakpoint_from_master (b, type, 1); |
0fd8e87f UW |
7317 | clone->thread = thread; |
7318 | } | |
186c406b TT |
7319 | |
7320 | tp->initiating_frame = frame; | |
c906108c SS |
7321 | } |
7322 | ||
611c83ae | 7323 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7324 | void |
611c83ae | 7325 | delete_longjmp_breakpoint (int thread) |
c906108c | 7326 | { |
1428b37a | 7327 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7328 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7329 | { |
7330 | if (b->thread == thread) | |
7331 | delete_breakpoint (b); | |
7332 | } | |
c906108c SS |
7333 | } |
7334 | ||
f59f708a PA |
7335 | void |
7336 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7337 | { | |
1428b37a | 7338 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7339 | if (b->type == bp_longjmp || b->type == bp_exception) |
7340 | { | |
7341 | if (b->thread == thread) | |
7342 | b->disposition = disp_del_at_next_stop; | |
7343 | } | |
7344 | } | |
7345 | ||
e2e4d78b JK |
7346 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7347 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7348 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7349 | breakpoints. */ | |
7350 | ||
7351 | struct breakpoint * | |
7352 | set_longjmp_breakpoint_for_call_dummy (void) | |
7353 | { | |
43892fdf | 7354 | breakpoint *retval = nullptr; |
e2e4d78b | 7355 | |
43892fdf | 7356 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7357 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7358 | { | |
7359 | struct breakpoint *new_b; | |
7360 | ||
7361 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 | 7362 | 1); |
00431a78 | 7363 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7364 | |
7365 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7366 | ||
7367 | gdb_assert (new_b->related_breakpoint == new_b); | |
7368 | if (retval == NULL) | |
7369 | retval = new_b; | |
7370 | new_b->related_breakpoint = retval; | |
7371 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7372 | retval = retval->related_breakpoint; | |
7373 | retval->related_breakpoint = new_b; | |
7374 | } | |
7375 | ||
7376 | return retval; | |
7377 | } | |
7378 | ||
7379 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7380 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7381 | stack. |
7382 | ||
b4b3e2de AB |
7383 | If the unwind fails then there is not sufficient information to discard |
7384 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7385 | be cleaned up next time this function is called from a location where | |
7386 | unwinding is possible. */ | |
e2e4d78b JK |
7387 | |
7388 | void | |
b67a2c6f | 7389 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7390 | { |
7391 | struct breakpoint *b, *b_tmp; | |
7392 | ||
7393 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7394 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7395 | { |
7396 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7397 | ||
b4b3e2de AB |
7398 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7399 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7400 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7401 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7402 | |
7403 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7404 | more to do. Or, if the dummy frame associated with the | |
7405 | bp_call_dummy is still on the stack then we need to leave this | |
7406 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7407 | if (dummy_b->type != bp_call_dummy |
7408 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7409 | continue; | |
b4b3e2de AB |
7410 | |
7411 | /* We didn't find the dummy frame on the stack, this could be | |
7412 | because we have longjmp'd to a stack frame that is previous to | |
7413 | the dummy frame, or it could be because the stack unwind is | |
7414 | broken at some point between the longjmp frame and the dummy | |
7415 | frame. | |
7416 | ||
7417 | Next we figure out why the stack unwind stopped. If it looks | |
7418 | like the unwind is complete then we assume the dummy frame has | |
7419 | been jumped over, however, if the unwind stopped for an | |
7420 | unexpected reason then we assume the stack unwind is currently | |
7421 | broken, and that we will (eventually) return to the dummy | |
7422 | frame. | |
7423 | ||
7424 | It might be tempting to consider using frame_id_inner here, but | |
7425 | that is not safe. There is no guarantee that the stack frames | |
7426 | we are looking at here are even on the same stack as the | |
7427 | original dummy frame, hence frame_id_inner can't be used. See | |
7428 | the comments on frame_id_inner for more details. */ | |
7429 | bool unwind_finished_unexpectedly = false; | |
7430 | for (struct frame_info *fi = get_current_frame (); fi != nullptr; ) | |
7431 | { | |
7432 | struct frame_info *prev = get_prev_frame (fi); | |
7433 | if (prev == nullptr) | |
7434 | { | |
7435 | /* FI is the last stack frame. Why did this frame not | |
7436 | unwind further? */ | |
7437 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7438 | if (stop_reason != UNWIND_NO_REASON | |
7439 | && stop_reason != UNWIND_OUTERMOST) | |
7440 | unwind_finished_unexpectedly = true; | |
7441 | } | |
7442 | fi = prev; | |
7443 | } | |
7444 | if (unwind_finished_unexpectedly) | |
7445 | continue; | |
7446 | ||
00431a78 | 7447 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7448 | |
7449 | while (b->related_breakpoint != b) | |
7450 | { | |
7451 | if (b_tmp == b->related_breakpoint) | |
7452 | b_tmp = b->related_breakpoint->next; | |
7453 | delete_breakpoint (b->related_breakpoint); | |
7454 | } | |
7455 | delete_breakpoint (b); | |
7456 | } | |
7457 | } | |
7458 | ||
1900040c MS |
7459 | void |
7460 | enable_overlay_breakpoints (void) | |
7461 | { | |
43892fdf | 7462 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7463 | if (b->type == bp_overlay_event) |
01add95b SM |
7464 | { |
7465 | b->enable_state = bp_enabled; | |
7466 | update_global_location_list (UGLL_MAY_INSERT); | |
7467 | overlay_events_enabled = 1; | |
7468 | } | |
1900040c MS |
7469 | } |
7470 | ||
7471 | void | |
7472 | disable_overlay_breakpoints (void) | |
7473 | { | |
43892fdf | 7474 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7475 | if (b->type == bp_overlay_event) |
01add95b SM |
7476 | { |
7477 | b->enable_state = bp_disabled; | |
7478 | update_global_location_list (UGLL_DONT_INSERT); | |
7479 | overlay_events_enabled = 0; | |
7480 | } | |
1900040c MS |
7481 | } |
7482 | ||
aa7d318d TT |
7483 | /* Set an active std::terminate breakpoint for each std::terminate |
7484 | master breakpoint. */ | |
7485 | void | |
7486 | set_std_terminate_breakpoint (void) | |
7487 | { | |
1428b37a | 7488 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7489 | if (b->pspace == current_program_space |
7490 | && b->type == bp_std_terminate_master) | |
7491 | { | |
9efa3c7f | 7492 | momentary_breakpoint_from_master (b, bp_std_terminate, 1); |
aa7d318d TT |
7493 | } |
7494 | } | |
7495 | ||
7496 | /* Delete all the std::terminate breakpoints. */ | |
7497 | void | |
7498 | delete_std_terminate_breakpoint (void) | |
7499 | { | |
1428b37a | 7500 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7501 | if (b->type == bp_std_terminate) |
7502 | delete_breakpoint (b); | |
7503 | } | |
7504 | ||
c4093a6a | 7505 | struct breakpoint * |
a6d9a66e | 7506 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7507 | { |
7508 | struct breakpoint *b; | |
c4093a6a | 7509 | |
9efa3c7f | 7510 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
06edf0c0 | 7511 | |
b5de0fa7 | 7512 | b->enable_state = bp_enabled; |
f00aae0f | 7513 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7514 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7515 | |
44702360 | 7516 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7517 | |
c4093a6a JM |
7518 | return b; |
7519 | } | |
7520 | ||
0101ce28 JJ |
7521 | struct lang_and_radix |
7522 | { | |
7523 | enum language lang; | |
7524 | int radix; | |
7525 | }; | |
7526 | ||
4efc6507 DE |
7527 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7528 | ||
7529 | struct breakpoint * | |
7530 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7531 | { | |
9efa3c7f | 7532 | return create_internal_breakpoint (gdbarch, address, bp_jit_event); |
4efc6507 | 7533 | } |
0101ce28 | 7534 | |
03673fc7 PP |
7535 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7536 | ||
7537 | void | |
7538 | remove_jit_event_breakpoints (void) | |
7539 | { | |
1428b37a | 7540 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7541 | if (b->type == bp_jit_event |
7542 | && b->loc->pspace == current_program_space) | |
7543 | delete_breakpoint (b); | |
7544 | } | |
7545 | ||
cae688ec JJ |
7546 | void |
7547 | remove_solib_event_breakpoints (void) | |
7548 | { | |
1428b37a | 7549 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7550 | if (b->type == bp_shlib_event |
7551 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7552 | delete_breakpoint (b); |
7553 | } | |
7554 | ||
f37f681c PA |
7555 | /* See breakpoint.h. */ |
7556 | ||
7557 | void | |
7558 | remove_solib_event_breakpoints_at_next_stop (void) | |
7559 | { | |
1428b37a | 7560 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7561 | if (b->type == bp_shlib_event |
7562 | && b->loc->pspace == current_program_space) | |
7563 | b->disposition = disp_del_at_next_stop; | |
7564 | } | |
7565 | ||
04086b45 PA |
7566 | /* Helper for create_solib_event_breakpoint / |
7567 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7568 | INSERT_MODE to pass through to update_global_location_list. */ | |
7569 | ||
7570 | static struct breakpoint * | |
7571 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7572 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7573 | { |
7574 | struct breakpoint *b; | |
7575 | ||
9efa3c7f | 7576 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
04086b45 | 7577 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7578 | return b; |
7579 | } | |
7580 | ||
04086b45 PA |
7581 | struct breakpoint * |
7582 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7583 | { | |
7584 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7585 | } | |
7586 | ||
f37f681c PA |
7587 | /* See breakpoint.h. */ |
7588 | ||
7589 | struct breakpoint * | |
7590 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7591 | { | |
7592 | struct breakpoint *b; | |
7593 | ||
04086b45 PA |
7594 | /* Explicitly tell update_global_location_list to insert |
7595 | locations. */ | |
7596 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7597 | if (!b->loc->inserted) |
7598 | { | |
7599 | delete_breakpoint (b); | |
7600 | return NULL; | |
7601 | } | |
7602 | return b; | |
7603 | } | |
7604 | ||
cae688ec JJ |
7605 | /* Disable any breakpoints that are on code in shared libraries. Only |
7606 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7607 | ||
7608 | void | |
cb851954 | 7609 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7610 | { |
48d7020b | 7611 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7612 | { |
7613 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7614 | struct breakpoint *b = loc->owner; | |
7615 | ||
7616 | /* We apply the check to all breakpoints, including disabled for | |
7617 | those with loc->duplicate set. This is so that when breakpoint | |
7618 | becomes enabled, or the duplicate is removed, gdb will try to | |
7619 | insert all breakpoints. If we don't set shlib_disabled here, | |
7620 | we'll try to insert those breakpoints and fail. */ | |
7621 | if (((b->type == bp_breakpoint) | |
7622 | || (b->type == bp_jit_event) | |
7623 | || (b->type == bp_hardware_breakpoint) | |
7624 | || (is_tracepoint (b))) | |
7625 | && loc->pspace == current_program_space | |
7626 | && !loc->shlib_disabled | |
7627 | && solib_name_from_address (loc->pspace, loc->address) | |
7628 | ) | |
7629 | { | |
7630 | loc->shlib_disabled = 1; | |
7631 | } | |
7632 | } | |
cae688ec JJ |
7633 | } |
7634 | ||
63644780 NB |
7635 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7636 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7637 | disabled ones can just stay disabled. */ | |
84acb35a | 7638 | |
75149521 | 7639 | static void |
84acb35a JJ |
7640 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7641 | { | |
84acb35a JJ |
7642 | int disabled_shlib_breaks = 0; |
7643 | ||
48d7020b | 7644 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7645 | { |
7646 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7647 | struct breakpoint *b = loc->owner; | |
7648 | ||
7649 | if (solib->pspace == loc->pspace | |
7650 | && !loc->shlib_disabled | |
7651 | && (((b->type == bp_breakpoint | |
7652 | || b->type == bp_jit_event | |
7653 | || b->type == bp_hardware_breakpoint) | |
7654 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7655 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7656 | || is_tracepoint (b)) | |
7657 | && solib_contains_address_p (solib, loc->address)) | |
7658 | { | |
7659 | loc->shlib_disabled = 1; | |
7660 | /* At this point, we cannot rely on remove_breakpoint | |
7661 | succeeding so we must mark the breakpoint as not inserted | |
7662 | to prevent future errors occurring in remove_breakpoints. */ | |
7663 | loc->inserted = 0; | |
7664 | ||
7665 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7666 | gdb::observers::breakpoint_modified.notify (b); | |
7667 | ||
7668 | if (!disabled_shlib_breaks) | |
7669 | { | |
7670 | target_terminal::ours_for_output (); | |
7671 | warning (_("Temporarily disabling breakpoints " | |
7672 | "for unloaded shared library \"%s\""), | |
7673 | solib->so_name); | |
7674 | } | |
7675 | disabled_shlib_breaks = 1; | |
7676 | } | |
7677 | } | |
84acb35a JJ |
7678 | } |
7679 | ||
63644780 NB |
7680 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7681 | notification of free_objfile. Only apply to enabled breakpoints, | |
7682 | disabled ones can just stay disabled. */ | |
7683 | ||
7684 | static void | |
7685 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7686 | { | |
63644780 NB |
7687 | if (objfile == NULL) |
7688 | return; | |
7689 | ||
d03de421 PA |
7690 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7691 | managed by the user with add-symbol-file/remove-symbol-file. | |
7692 | Similarly to how breakpoints in shared libraries are handled in | |
7693 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7694 | shlib_disabled so they end up uninserted on the next global |
7695 | location list update. Shared libraries not loaded by the user | |
7696 | aren't handled here -- they're already handled in | |
7697 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7698 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7699 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7700 | main objfile). */ | |
7701 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7702 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7703 | return; |
7704 | ||
43892fdf | 7705 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7706 | { |
63644780 NB |
7707 | int bp_modified = 0; |
7708 | ||
7709 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7710 | continue; | |
7711 | ||
40cb8ca5 | 7712 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7713 | { |
7714 | CORE_ADDR loc_addr = loc->address; | |
7715 | ||
7716 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7717 | && loc->loc_type != bp_loc_software_breakpoint) | |
7718 | continue; | |
7719 | ||
7720 | if (loc->shlib_disabled != 0) | |
7721 | continue; | |
7722 | ||
7723 | if (objfile->pspace != loc->pspace) | |
7724 | continue; | |
7725 | ||
7726 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7727 | && loc->loc_type != bp_loc_software_breakpoint) | |
7728 | continue; | |
7729 | ||
7730 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7731 | { | |
7732 | loc->shlib_disabled = 1; | |
08351840 PA |
7733 | /* At this point, we don't know whether the object was |
7734 | unmapped from the inferior or not, so leave the | |
7735 | inserted flag alone. We'll handle failure to | |
7736 | uninsert quietly, in case the object was indeed | |
7737 | unmapped. */ | |
63644780 NB |
7738 | |
7739 | mark_breakpoint_location_modified (loc); | |
7740 | ||
7741 | bp_modified = 1; | |
7742 | } | |
7743 | } | |
7744 | ||
7745 | if (bp_modified) | |
76727919 | 7746 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7747 | } |
7748 | } | |
7749 | ||
b650a282 | 7750 | /* See breakpoint.h. */ |
ce78b96d | 7751 | |
fed1c982 TT |
7752 | catchpoint::catchpoint (struct gdbarch *gdbarch, bool temp, |
7753 | const char *cond_string_) | |
7754 | : base_breakpoint (gdbarch, bp_catchpoint) | |
c906108c | 7755 | { |
51abb421 | 7756 | symtab_and_line sal; |
6c95b8df | 7757 | sal.pspace = current_program_space; |
c5aa993b | 7758 | |
fed1c982 | 7759 | init_raw_breakpoint (this, sal, bp_catchpoint); |
ce78b96d | 7760 | |
fed1c982 TT |
7761 | if (cond_string_ != nullptr) |
7762 | cond_string = make_unique_xstrdup (cond_string_); | |
7763 | disposition = temp ? disp_del : disp_donttouch; | |
346774a9 PA |
7764 | } |
7765 | ||
28010a5d | 7766 | void |
b270e6f9 | 7767 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 7768 | { |
b270e6f9 | 7769 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 7770 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
7771 | if (is_tracepoint (b)) |
7772 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
7773 | if (!internal) |
7774 | mention (b); | |
76727919 | 7775 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
7776 | |
7777 | if (update_gll) | |
44702360 | 7778 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
7779 | } |
7780 | ||
c906108c | 7781 | static int |
fba45db2 | 7782 | hw_breakpoint_used_count (void) |
c906108c | 7783 | { |
c906108c SS |
7784 | int i = 0; |
7785 | ||
43892fdf | 7786 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 7787 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 7788 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
7789 | { |
7790 | /* Special types of hardware breakpoints may use more than | |
7791 | one register. */ | |
c47614fe | 7792 | i += b->resources_needed (bl); |
f1310107 | 7793 | } |
c906108c SS |
7794 | |
7795 | return i; | |
7796 | } | |
7797 | ||
a1398e0c PA |
7798 | /* Returns the resources B would use if it were a hardware |
7799 | watchpoint. */ | |
7800 | ||
c906108c | 7801 | static int |
a1398e0c | 7802 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 7803 | { |
c906108c SS |
7804 | int i = 0; |
7805 | ||
a1398e0c PA |
7806 | if (!breakpoint_enabled (b)) |
7807 | return 0; | |
7808 | ||
40cb8ca5 | 7809 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
7810 | { |
7811 | /* Special types of hardware watchpoints may use more than | |
7812 | one register. */ | |
c47614fe | 7813 | i += b->resources_needed (bl); |
a1398e0c PA |
7814 | } |
7815 | ||
7816 | return i; | |
7817 | } | |
7818 | ||
7819 | /* Returns the sum the used resources of all hardware watchpoints of | |
7820 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
7821 | the sum of the used resources of all hardware watchpoints of other | |
7822 | types _not_ TYPE. */ | |
7823 | ||
7824 | static int | |
7825 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
7826 | enum bptype type, int *other_type_used) | |
7827 | { | |
7828 | int i = 0; | |
a1398e0c | 7829 | |
c906108c | 7830 | *other_type_used = 0; |
43892fdf | 7831 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 7832 | { |
a1398e0c PA |
7833 | if (b == except) |
7834 | continue; | |
e09342b5 TJB |
7835 | if (!breakpoint_enabled (b)) |
7836 | continue; | |
7837 | ||
a1398e0c PA |
7838 | if (b->type == type) |
7839 | i += hw_watchpoint_use_count (b); | |
7840 | else if (is_hardware_watchpoint (b)) | |
7841 | *other_type_used = 1; | |
e09342b5 TJB |
7842 | } |
7843 | ||
c906108c SS |
7844 | return i; |
7845 | } | |
7846 | ||
c906108c | 7847 | void |
fba45db2 | 7848 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 7849 | { |
43892fdf | 7850 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7851 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 7852 | { |
b5de0fa7 | 7853 | b->enable_state = bp_call_disabled; |
44702360 | 7854 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 7855 | } |
c906108c SS |
7856 | } |
7857 | ||
7858 | void | |
fba45db2 | 7859 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 7860 | { |
43892fdf | 7861 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7862 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7863 | { |
b5de0fa7 | 7864 | b->enable_state = bp_enabled; |
44702360 | 7865 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 7866 | } |
c906108c SS |
7867 | } |
7868 | ||
8bea4e01 UW |
7869 | void |
7870 | disable_breakpoints_before_startup (void) | |
7871 | { | |
6c95b8df | 7872 | current_program_space->executing_startup = 1; |
44702360 | 7873 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
7874 | } |
7875 | ||
7876 | void | |
7877 | enable_breakpoints_after_startup (void) | |
7878 | { | |
6c95b8df | 7879 | current_program_space->executing_startup = 0; |
f8eba3c6 | 7880 | breakpoint_re_set (); |
8bea4e01 UW |
7881 | } |
7882 | ||
7c16b83e PA |
7883 | /* Create a new single-step breakpoint for thread THREAD, with no |
7884 | locations. */ | |
c906108c | 7885 | |
7c16b83e PA |
7886 | static struct breakpoint * |
7887 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
7888 | { | |
73063f51 TT |
7889 | std::unique_ptr<breakpoint> b (new momentary_breakpoint (gdbarch, |
7890 | bp_single_step)); | |
7c16b83e PA |
7891 | |
7892 | b->disposition = disp_donttouch; | |
7893 | b->frame_id = null_frame_id; | |
7894 | ||
7895 | b->thread = thread; | |
7896 | gdb_assert (b->thread != 0); | |
7897 | ||
b270e6f9 | 7898 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
7899 | } |
7900 | ||
7a3e3265 PA |
7901 | /* Allocate a new momentary breakpoint. */ |
7902 | ||
7903 | static momentary_breakpoint * | |
7904 | new_momentary_breakpoint (struct gdbarch *gdbarch, enum bptype type) | |
7905 | { | |
7906 | if (type == bp_longjmp || type == bp_exception) | |
7907 | return new longjmp_breakpoint (gdbarch, type); | |
7908 | else | |
7909 | return new momentary_breakpoint (gdbarch, type); | |
7910 | } | |
7911 | ||
7c16b83e PA |
7912 | /* Set a momentary breakpoint of type TYPE at address specified by |
7913 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
7914 | frame. */ | |
c906108c | 7915 | |
454dafbd | 7916 | breakpoint_up |
a6d9a66e UW |
7917 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7918 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7919 | { |
193facb3 JK |
7920 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
7921 | tail-called one. */ | |
7922 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 7923 | |
7a3e3265 PA |
7924 | std::unique_ptr<momentary_breakpoint> b |
7925 | (new_momentary_breakpoint (gdbarch, type)); | |
7926 | ||
7927 | b->add_location (sal); | |
7928 | b->pspace = sal.pspace; | |
b5de0fa7 EZ |
7929 | b->enable_state = bp_enabled; |
7930 | b->disposition = disp_donttouch; | |
818dd999 | 7931 | b->frame_id = frame_id; |
c906108c | 7932 | |
00431a78 | 7933 | b->thread = inferior_thread ()->global_num; |
c906108c | 7934 | |
7a3e3265 PA |
7935 | breakpoint_up bp (add_to_breakpoint_chain (std::move (b))); |
7936 | ||
44702360 | 7937 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7938 | |
7a3e3265 | 7939 | return bp; |
c906108c | 7940 | } |
611c83ae | 7941 | |
06edf0c0 | 7942 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
7943 | The new breakpoint will have type TYPE, use OPS as its |
7944 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 7945 | |
06edf0c0 PA |
7946 | static struct breakpoint * |
7947 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
7948 | enum bptype type, | |
a1aa2221 | 7949 | int loc_enabled) |
e58b0e63 | 7950 | { |
7a3e3265 PA |
7951 | std::unique_ptr<breakpoint> copy |
7952 | (new_momentary_breakpoint (orig->gdbarch, type)); | |
ee89d0a4 | 7953 | copy->loc = copy->allocate_location (); |
0ba852ab | 7954 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 7955 | |
a6d9a66e | 7956 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7957 | copy->loc->requested_address = orig->loc->requested_address; |
7958 | copy->loc->address = orig->loc->address; | |
7959 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7960 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 7961 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 7962 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 7963 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 7964 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
7965 | copy->frame_id = orig->frame_id; |
7966 | copy->thread = orig->thread; | |
6c95b8df | 7967 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7968 | |
7969 | copy->enable_state = bp_enabled; | |
7970 | copy->disposition = disp_donttouch; | |
7971 | copy->number = internal_breakpoint_number--; | |
7972 | ||
7a3e3265 | 7973 | breakpoint *b = add_to_breakpoint_chain (std::move (copy)); |
44702360 | 7974 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
7a3e3265 | 7975 | return b; |
e58b0e63 PA |
7976 | } |
7977 | ||
06edf0c0 PA |
7978 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7979 | ORIG is NULL. */ | |
7980 | ||
7981 | struct breakpoint * | |
7982 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7983 | { | |
7984 | /* If there's nothing to clone, then return nothing. */ | |
7985 | if (orig == NULL) | |
7986 | return NULL; | |
7987 | ||
9efa3c7f | 7988 | return momentary_breakpoint_from_master (orig, orig->type, 0); |
06edf0c0 PA |
7989 | } |
7990 | ||
454dafbd | 7991 | breakpoint_up |
a6d9a66e UW |
7992 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7993 | enum bptype type) | |
611c83ae PA |
7994 | { |
7995 | struct symtab_and_line sal; | |
7996 | ||
7997 | sal = find_pc_line (pc, 0); | |
7998 | sal.pc = pc; | |
7999 | sal.section = find_pc_overlay (pc); | |
8000 | sal.explicit_pc = 1; | |
8001 | ||
a6d9a66e | 8002 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8003 | } |
c906108c | 8004 | \f |
c5aa993b | 8005 | |
c906108c SS |
8006 | /* Tell the user we have just set a breakpoint B. */ |
8007 | ||
8008 | static void | |
b713485d | 8009 | mention (const breakpoint *b) |
c906108c | 8010 | { |
c47614fe | 8011 | b->print_mention (); |
2d33446d | 8012 | current_uiout->text ("\n"); |
c906108c | 8013 | } |
c906108c | 8014 | \f |
c5aa993b | 8015 | |
5133a315 | 8016 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8017 | |
7f32a4d5 PA |
8018 | /* Handle "set breakpoint auto-hw on". |
8019 | ||
8020 | If the explicitly specified breakpoint type is not hardware | |
8021 | breakpoint, check the memory map to see whether the breakpoint | |
8022 | address is in read-only memory. | |
8023 | ||
8024 | - location type is not hardware breakpoint, memory is read-only. | |
8025 | We change the type of the location to hardware breakpoint. | |
8026 | ||
8027 | - location type is hardware breakpoint, memory is read-write. This | |
8028 | means we've previously made the location hardware one, but then the | |
8029 | memory map changed, so we undo. | |
8030 | */ | |
8031 | ||
8032 | static void | |
8033 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8034 | { | |
8035 | if (automatic_hardware_breakpoints | |
8036 | && bl->owner->type != bp_hardware_breakpoint | |
8037 | && (bl->loc_type == bp_loc_software_breakpoint | |
8038 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8039 | { | |
8040 | /* When breakpoints are removed, remove_breakpoints will use | |
8041 | location types we've just set here, the only possible problem | |
8042 | is that memory map has changed during running program, but | |
8043 | it's not going to work anyway with current gdb. */ | |
8044 | mem_region *mr = lookup_mem_region (bl->address); | |
8045 | ||
8046 | if (mr != nullptr) | |
8047 | { | |
8048 | enum bp_loc_type new_type; | |
8049 | ||
8050 | if (mr->attrib.mode != MEM_RW) | |
8051 | new_type = bp_loc_hardware_breakpoint; | |
8052 | else | |
8053 | new_type = bp_loc_software_breakpoint; | |
8054 | ||
8055 | if (new_type != bl->loc_type) | |
8056 | { | |
8057 | static bool said = false; | |
8058 | ||
8059 | bl->loc_type = new_type; | |
8060 | if (!said) | |
8061 | { | |
6cb06a8c TT |
8062 | gdb_printf (_("Note: automatically using " |
8063 | "hardware breakpoints for " | |
8064 | "read-only addresses.\n")); | |
7f32a4d5 PA |
8065 | said = true; |
8066 | } | |
8067 | } | |
8068 | } | |
8069 | } | |
8070 | } | |
8071 | ||
06615628 PA |
8072 | bp_location * |
8073 | breakpoint::add_location (const symtab_and_line &sal) | |
0d381245 | 8074 | { |
06615628 | 8075 | struct bp_location *new_loc, **tmp; |
3742cc8b | 8076 | CORE_ADDR adjusted_address; |
06615628 | 8077 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
3742cc8b YQ |
8078 | |
8079 | if (loc_gdbarch == NULL) | |
06615628 | 8080 | loc_gdbarch = gdbarch; |
3742cc8b YQ |
8081 | |
8082 | /* Adjust the breakpoint's address prior to allocating a location. | |
ee89d0a4 | 8083 | Once we call allocate_location(), that mostly uninitialized |
3742cc8b YQ |
8084 | location will be placed on the location chain. Adjustment of the |
8085 | breakpoint may cause target_read_memory() to be called and we do | |
8086 | not want its scan of the location chain to find a breakpoint and | |
8087 | location that's only been partially initialized. */ | |
8088 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
06615628 | 8089 | sal.pc, type); |
0d381245 | 8090 | |
d30113d4 | 8091 | /* Sort the locations by their ADDRESS. */ |
06615628 PA |
8092 | new_loc = allocate_location (); |
8093 | for (tmp = &(loc); *tmp != NULL && (*tmp)->address <= adjusted_address; | |
d30113d4 | 8094 | tmp = &((*tmp)->next)) |
0d381245 | 8095 | ; |
06615628 PA |
8096 | new_loc->next = *tmp; |
8097 | *tmp = new_loc; | |
8098 | ||
8099 | new_loc->requested_address = sal.pc; | |
8100 | new_loc->address = adjusted_address; | |
8101 | new_loc->pspace = sal.pspace; | |
8102 | new_loc->probe.prob = sal.prob; | |
8103 | new_loc->probe.objfile = sal.objfile; | |
8104 | gdb_assert (new_loc->pspace != NULL); | |
8105 | new_loc->section = sal.section; | |
8106 | new_loc->gdbarch = loc_gdbarch; | |
8107 | new_loc->line_number = sal.line; | |
8108 | new_loc->symtab = sal.symtab; | |
8109 | new_loc->symbol = sal.symbol; | |
8110 | new_loc->msymbol = sal.msymbol; | |
8111 | new_loc->objfile = sal.objfile; | |
8112 | ||
8113 | set_breakpoint_location_function (new_loc); | |
1a853c52 | 8114 | |
6ae88661 LM |
8115 | /* While by definition, permanent breakpoints are already present in the |
8116 | code, we don't mark the location as inserted. Normally one would expect | |
8117 | that GDB could rely on that breakpoint instruction to stop the program, | |
8118 | thus removing the need to insert its own breakpoint, except that executing | |
8119 | the breakpoint instruction can kill the target instead of reporting a | |
8120 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8121 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8122 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8123 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8124 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8125 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8126 | it manually increments the PC, thus avoiding executing the breakpoint | |
8127 | instruction.) */ | |
06615628 PA |
8128 | if (bp_loc_is_permanent (new_loc)) |
8129 | new_loc->permanent = 1; | |
1a853c52 | 8130 | |
06615628 | 8131 | return new_loc; |
0d381245 | 8132 | } |
514f746b AR |
8133 | \f |
8134 | ||
5133a315 LM |
8135 | /* Return true if LOC is pointing to a permanent breakpoint, |
8136 | return false otherwise. */ | |
1cf4d951 | 8137 | |
5133a315 | 8138 | static bool |
1cf4d951 PA |
8139 | bp_loc_is_permanent (struct bp_location *loc) |
8140 | { | |
514f746b AR |
8141 | gdb_assert (loc != NULL); |
8142 | ||
cb1e4e32 PA |
8143 | /* If we have a non-breakpoint-backed catchpoint or a software |
8144 | watchpoint, just return 0. We should not attempt to read from | |
8145 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8146 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8147 | memory. */ |
cb1e4e32 | 8148 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8149 | return false; |
244558af | 8150 | |
5ed8105e | 8151 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8152 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8153 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8154 | } |
8155 | ||
e7e0cddf SS |
8156 | /* Build a command list for the dprintf corresponding to the current |
8157 | settings of the dprintf style options. */ | |
8158 | ||
8159 | static void | |
8160 | update_dprintf_command_list (struct breakpoint *b) | |
8161 | { | |
6f781ee3 | 8162 | const char *dprintf_args = b->extra_string.get (); |
8579fd13 | 8163 | gdb::unique_xmalloc_ptr<char> printf_line = nullptr; |
e7e0cddf SS |
8164 | |
8165 | if (!dprintf_args) | |
8166 | return; | |
8167 | ||
8168 | dprintf_args = skip_spaces (dprintf_args); | |
8169 | ||
8170 | /* Allow a comma, as it may have terminated a location, but don't | |
8171 | insist on it. */ | |
8172 | if (*dprintf_args == ',') | |
8173 | ++dprintf_args; | |
8174 | dprintf_args = skip_spaces (dprintf_args); | |
8175 | ||
8176 | if (*dprintf_args != '"') | |
8177 | error (_("Bad format string, missing '\"'.")); | |
8178 | ||
d3ce09f5 | 8179 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8180 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8181 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf | 8182 | { |
e0700ba4 | 8183 | if (dprintf_function.empty ()) |
e7e0cddf SS |
8184 | error (_("No function supplied for dprintf call")); |
8185 | ||
e0700ba4 | 8186 | if (!dprintf_channel.empty ()) |
e7e0cddf | 8187 | printf_line = xstrprintf ("call (void) %s (%s,%s)", |
e0700ba4 SM |
8188 | dprintf_function.c_str (), |
8189 | dprintf_channel.c_str (), | |
e7e0cddf SS |
8190 | dprintf_args); |
8191 | else | |
8192 | printf_line = xstrprintf ("call (void) %s (%s)", | |
e0700ba4 | 8193 | dprintf_function.c_str (), |
e7e0cddf SS |
8194 | dprintf_args); |
8195 | } | |
d3ce09f5 SS |
8196 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8197 | { | |
8198 | if (target_can_run_breakpoint_commands ()) | |
8199 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8200 | else | |
8201 | { | |
8202 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8203 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8204 | } | |
8205 | } | |
e7e0cddf SS |
8206 | else |
8207 | internal_error (__FILE__, __LINE__, | |
8208 | _("Invalid dprintf style.")); | |
8209 | ||
f28045c2 | 8210 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8211 | |
12973681 TT |
8212 | /* Manufacture a printf sequence. */ |
8213 | struct command_line *printf_cmd_line | |
8579fd13 | 8214 | = new struct command_line (simple_control, printf_line.release ()); |
12973681 TT |
8215 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, |
8216 | command_lines_deleter ())); | |
e7e0cddf SS |
8217 | } |
8218 | ||
8219 | /* Update all dprintf commands, making their command lists reflect | |
8220 | current style settings. */ | |
8221 | ||
8222 | static void | |
eb4c3f4a | 8223 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8224 | struct cmd_list_element *c) |
8225 | { | |
43892fdf SM |
8226 | for (breakpoint *b : all_breakpoints ()) |
8227 | if (b->type == bp_dprintf) | |
e7e0cddf | 8228 | update_dprintf_command_list (b); |
e7e0cddf | 8229 | } |
c3f6f71d | 8230 | |
3b003a61 PA |
8231 | base_breakpoint::base_breakpoint (struct gdbarch *gdbarch_, |
8232 | enum bptype type_, | |
8233 | gdb::array_view<const symtab_and_line> sals, | |
8234 | event_location_up &&location_, | |
8235 | gdb::unique_xmalloc_ptr<char> filter_, | |
8236 | gdb::unique_xmalloc_ptr<char> cond_string_, | |
8237 | gdb::unique_xmalloc_ptr<char> extra_string_, | |
8238 | enum bpdisp disposition_, | |
8239 | int thread_, int task_, int ignore_count_, | |
8240 | int from_tty, | |
8241 | int enabled_, unsigned flags, | |
8242 | int display_canonical_) | |
8243 | : breakpoint (gdbarch_, type_) | |
018d34a4 | 8244 | { |
0d381245 | 8245 | int i; |
018d34a4 VP |
8246 | |
8247 | if (type == bp_hardware_breakpoint) | |
8248 | { | |
fbbd034e AS |
8249 | int target_resources_ok; |
8250 | ||
8251 | i = hw_breakpoint_used_count (); | |
8252 | target_resources_ok = | |
8253 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8254 | i + 1, 0); |
8255 | if (target_resources_ok == 0) | |
8256 | error (_("No hardware breakpoint support in the target.")); | |
8257 | else if (target_resources_ok < 0) | |
8258 | error (_("Hardware breakpoints used exceeds limit.")); | |
8259 | } | |
8260 | ||
6c5b2ebe | 8261 | gdb_assert (!sals.empty ()); |
6c95b8df | 8262 | |
3b003a61 PA |
8263 | thread = thread_; |
8264 | task = task_; | |
0d381245 | 8265 | |
3b003a61 PA |
8266 | cond_string = std::move (cond_string_); |
8267 | extra_string = std::move (extra_string_); | |
8268 | ignore_count = ignore_count_; | |
8269 | enable_state = enabled_ ? bp_enabled : bp_disabled; | |
8270 | disposition = disposition_; | |
5af949e3 | 8271 | |
3b003a61 PA |
8272 | if (type == bp_static_tracepoint |
8273 | || type == bp_static_marker_tracepoint) | |
8274 | { | |
8275 | auto *t = static_cast<struct tracepoint *> (this); | |
8276 | struct static_tracepoint_marker marker; | |
0d381245 | 8277 | |
3b003a61 | 8278 | if (strace_marker_p (this)) |
0d381245 | 8279 | { |
3b003a61 PA |
8280 | /* We already know the marker exists, otherwise, we wouldn't |
8281 | see a sal for it. */ | |
8282 | const char *p = &event_location_to_string (location_.get ())[3]; | |
8283 | const char *endp; | |
0fb4aa4b | 8284 | |
3b003a61 | 8285 | p = skip_spaces (p); |
0fb4aa4b | 8286 | |
3b003a61 | 8287 | endp = skip_to_space (p); |
0fb4aa4b | 8288 | |
3b003a61 | 8289 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8290 | |
3b003a61 PA |
8291 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8292 | t->static_trace_marker_id.c_str ()); | |
8293 | } | |
8294 | else if (target_static_tracepoint_marker_at (sals[0].pc, &marker)) | |
8295 | { | |
8296 | t->static_trace_marker_id = std::move (marker.str_id); | |
0fb4aa4b | 8297 | |
3b003a61 PA |
8298 | gdb_printf (_("Probed static tracepoint marker \"%s\"\n"), |
8299 | t->static_trace_marker_id.c_str ()); | |
0d381245 VP |
8300 | } |
8301 | else | |
3b003a61 PA |
8302 | warning (_("Couldn't determine the static tracepoint marker to probe")); |
8303 | } | |
8304 | ||
8305 | for (const auto &sal : sals) | |
8306 | { | |
8307 | if (from_tty) | |
018d34a4 | 8308 | { |
3b003a61 PA |
8309 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8310 | if (loc_gdbarch == nullptr) | |
8311 | loc_gdbarch = gdbarch; | |
8312 | ||
8313 | describe_other_breakpoints (loc_gdbarch, | |
8314 | sal.pspace, sal.pc, sal.section, thread); | |
0d381245 VP |
8315 | } |
8316 | ||
3b003a61 PA |
8317 | bp_location *new_loc = add_location (sal); |
8318 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) | |
8319 | new_loc->inserted = 1; | |
8320 | ||
b5fa468f TBA |
8321 | /* Do not set breakpoint locations conditions yet. As locations |
8322 | are inserted, they get sorted based on their addresses. Let | |
8323 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8324 | |
8325 | /* Dynamic printf requires and uses additional arguments on the | |
8326 | command line, otherwise it's an error. */ | |
8327 | if (type == bp_dprintf) | |
8328 | { | |
3b003a61 PA |
8329 | if (extra_string != nullptr) |
8330 | update_dprintf_command_list (this); | |
e7e0cddf SS |
8331 | else |
8332 | error (_("Format string required")); | |
8333 | } | |
3b003a61 PA |
8334 | else if (extra_string != nullptr) |
8335 | error (_("Garbage '%s' at end of command"), extra_string.get ()); | |
855a6e68 | 8336 | } |
018d34a4 | 8337 | |
b5fa468f TBA |
8338 | /* The order of the locations is now stable. Set the location |
8339 | condition using the location's number. */ | |
8340 | int loc_num = 1; | |
3b003a61 | 8341 | for (bp_location *bl : locations ()) |
b5fa468f | 8342 | { |
3b003a61 PA |
8343 | if (cond_string != nullptr) |
8344 | set_breakpoint_location_condition (cond_string.get (), bl, | |
8345 | number, loc_num); | |
b5fa468f TBA |
8346 | |
8347 | ++loc_num; | |
8348 | } | |
8349 | ||
3b003a61 PA |
8350 | display_canonical = display_canonical_; |
8351 | if (location_ != nullptr) | |
8352 | location = std::move (location_); | |
018d34a4 | 8353 | else |
3b003a61 PA |
8354 | location = new_address_location (this->loc->address, NULL, 0); |
8355 | filter = std::move (filter_); | |
d9b3f62e | 8356 | } |
018d34a4 | 8357 | |
d9b3f62e PA |
8358 | static void |
8359 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8360 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8361 | event_location_up &&location, |
e1e01040 PA |
8362 | gdb::unique_xmalloc_ptr<char> filter, |
8363 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8364 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8365 | enum bptype type, enum bpdisp disposition, |
8366 | int thread, int task, int ignore_count, | |
ef4848c7 | 8367 | int from_tty, |
44f238bb PA |
8368 | int enabled, int internal, unsigned flags, |
8369 | int display_canonical) | |
d9b3f62e | 8370 | { |
3b003a61 PA |
8371 | std::unique_ptr<base_breakpoint> b |
8372 | = new_breakpoint_from_type (gdbarch, | |
8373 | type, | |
8374 | sals, | |
8375 | std::move (location), | |
8376 | std::move (filter), | |
8377 | std::move (cond_string), | |
8378 | std::move (extra_string), | |
8379 | disposition, | |
8380 | thread, task, ignore_count, | |
8381 | from_tty, | |
8382 | enabled, flags, | |
8383 | display_canonical); | |
d9b3f62e | 8384 | |
b270e6f9 | 8385 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8386 | } |
8387 | ||
8388 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8389 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8390 | value. COND_STRING, if not NULL, specified the condition to be | |
8391 | used for all breakpoints. Essentially the only case where | |
8392 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8393 | function. In that case, it's still not possible to specify | |
8394 | separate conditions for different overloaded functions, so | |
8395 | we take just a single condition string. | |
8396 | ||
c3f6f71d | 8397 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8398 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8399 | array contents). If the function fails (error() is called), the |
8400 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8401 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8402 | |
8403 | static void | |
8cdf0e15 | 8404 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8405 | struct linespec_result *canonical, |
e1e01040 PA |
8406 | gdb::unique_xmalloc_ptr<char> cond_string, |
8407 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8408 | enum bptype type, enum bpdisp disposition, |
8409 | int thread, int task, int ignore_count, | |
ef4848c7 | 8410 | int from_tty, |
44f238bb | 8411 | int enabled, int internal, unsigned flags) |
c906108c | 8412 | { |
f8eba3c6 | 8413 | if (canonical->pre_expanded) |
6c5b2ebe | 8414 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8415 | |
6c5b2ebe | 8416 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8417 | { |
f00aae0f | 8418 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8419 | 'break', without arguments. */ |
ffc2605c | 8420 | event_location_up location |
f00aae0f | 8421 | = (canonical->location != NULL |
8e9e35b1 | 8422 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8423 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8424 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8425 | |
6c5b2ebe | 8426 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8427 | std::move (location), |
e1e01040 PA |
8428 | std::move (filter_string), |
8429 | std::move (cond_string), | |
8430 | std::move (extra_string), | |
e7e0cddf | 8431 | type, disposition, |
ef4848c7 | 8432 | thread, task, ignore_count, |
44f238bb | 8433 | from_tty, enabled, internal, flags, |
56435ebe | 8434 | canonical->special_display); |
c3f6f71d | 8435 | } |
c3f6f71d | 8436 | } |
c906108c | 8437 | |
f00aae0f | 8438 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8439 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8440 | addresses found. LOCATION points to the end of the SAL (for |
8441 | linespec locations). | |
9998af43 TJB |
8442 | |
8443 | The array and the line spec strings are allocated on the heap, it is | |
8444 | the caller's responsibility to free them. */ | |
c906108c | 8445 | |
b9362cc7 | 8446 | static void |
626d2320 | 8447 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 8448 | struct linespec_result *canonical) |
c3f6f71d | 8449 | { |
f00aae0f KS |
8450 | struct symtab_and_line cursal; |
8451 | ||
8452 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8453 | { | |
a20714ff | 8454 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8455 | |
a20714ff | 8456 | if (spec == NULL) |
f00aae0f KS |
8457 | { |
8458 | /* The last displayed codepoint, if it's valid, is our default | |
8459 | breakpoint address. */ | |
8460 | if (last_displayed_sal_is_valid ()) | |
8461 | { | |
f00aae0f KS |
8462 | /* Set sal's pspace, pc, symtab, and line to the values |
8463 | corresponding to the last call to print_frame_info. | |
8464 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8465 | as the breakpoint line number is inappropriate otherwise. | |
8466 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8467 | symtab_and_line sal = get_last_displayed_sal (); |
8468 | CORE_ADDR pc = sal.pc; | |
8469 | ||
f00aae0f KS |
8470 | sal = find_pc_line (pc, 0); |
8471 | ||
8472 | /* "break" without arguments is equivalent to "break *PC" | |
8473 | where PC is the last displayed codepoint's address. So | |
8474 | make sure to set sal.explicit_pc to prevent GDB from | |
8475 | trying to expand the list of sals to include all other | |
8476 | instances with the same symtab and line. */ | |
8477 | sal.pc = pc; | |
8478 | sal.explicit_pc = 1; | |
8479 | ||
6c5b2ebe PA |
8480 | struct linespec_sals lsal; |
8481 | lsal.sals = {sal}; | |
f00aae0f KS |
8482 | lsal.canonical = NULL; |
8483 | ||
6c5b2ebe | 8484 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8485 | return; |
8486 | } | |
8487 | else | |
8488 | error (_("No default breakpoint address now.")); | |
c906108c | 8489 | } |
c906108c | 8490 | } |
f00aae0f KS |
8491 | |
8492 | /* Force almost all breakpoints to be in terms of the | |
8493 | current_source_symtab (which is decode_line_1's default). | |
8494 | This should produce the results we want almost all of the | |
8495 | time while leaving default_breakpoint_* alone. | |
8496 | ||
8497 | ObjC: However, don't match an Objective-C method name which | |
8498 | may have a '+' or '-' succeeded by a '['. */ | |
8499 | cursal = get_current_source_symtab_and_line (); | |
8500 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8501 | { |
a20714ff | 8502 | const char *spec = NULL; |
cc80f267 | 8503 | |
f00aae0f | 8504 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 8505 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 8506 | |
f00aae0f | 8507 | if (!cursal.symtab |
a20714ff PA |
8508 | || (spec != NULL |
8509 | && strchr ("+-", spec[0]) != NULL | |
8510 | && spec[1] != '[')) | |
f00aae0f | 8511 | { |
c2f4122d | 8512 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8513 | get_last_displayed_symtab (), |
8514 | get_last_displayed_line (), | |
8515 | canonical, NULL, NULL); | |
8516 | return; | |
8517 | } | |
c906108c | 8518 | } |
f00aae0f | 8519 | |
c2f4122d | 8520 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8521 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8522 | } |
c906108c | 8523 | |
c906108c | 8524 | |
c3f6f71d | 8525 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8526 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8527 | |
b9362cc7 | 8528 | static void |
6c5b2ebe | 8529 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8530 | { |
6c5b2ebe PA |
8531 | for (auto &sal : sals) |
8532 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8533 | } |
8534 | ||
7a697b8d SS |
8535 | /* Fast tracepoints may have restrictions on valid locations. For |
8536 | instance, a fast tracepoint using a jump instead of a trap will | |
8537 | likely have to overwrite more bytes than a trap would, and so can | |
8538 | only be placed where the instruction is longer than the jump, or a | |
8539 | multi-instruction sequence does not have a jump into the middle of | |
8540 | it, etc. */ | |
8541 | ||
8542 | static void | |
8543 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 8544 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 8545 | { |
6c5b2ebe | 8546 | for (const auto &sal : sals) |
7a697b8d | 8547 | { |
f8eba3c6 TT |
8548 | struct gdbarch *sarch; |
8549 | ||
6c5b2ebe | 8550 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
8551 | /* We fall back to GDBARCH if there is no architecture |
8552 | associated with SAL. */ | |
8553 | if (sarch == NULL) | |
8554 | sarch = gdbarch; | |
281d762b TT |
8555 | std::string msg; |
8556 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 8557 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 8558 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
8559 | } |
8560 | } | |
8561 | ||
018d34a4 VP |
8562 | /* Given TOK, a string specification of condition and thread, as |
8563 | accepted by the 'break' command, extract the condition | |
8564 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8565 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8566 | If no condition is found, *COND_STRING is set to NULL. |
8567 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8568 | |
8569 | static void | |
bbc13ae3 | 8570 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
6f781ee3 TT |
8571 | gdb::unique_xmalloc_ptr<char> *cond_string, |
8572 | int *thread, int *task, | |
8573 | gdb::unique_xmalloc_ptr<char> *rest) | |
018d34a4 | 8574 | { |
6f781ee3 | 8575 | cond_string->reset (); |
018d34a4 | 8576 | *thread = -1; |
ed1d1739 | 8577 | *task = 0; |
6f781ee3 | 8578 | rest->reset (); |
733d554a | 8579 | bool force = false; |
ed1d1739 | 8580 | |
018d34a4 VP |
8581 | while (tok && *tok) |
8582 | { | |
bbc13ae3 | 8583 | const char *end_tok; |
018d34a4 | 8584 | int toklen; |
bbc13ae3 KS |
8585 | const char *cond_start = NULL; |
8586 | const char *cond_end = NULL; | |
cc59ec59 | 8587 | |
f1735a53 | 8588 | tok = skip_spaces (tok); |
e7e0cddf SS |
8589 | |
8590 | if ((*tok == '"' || *tok == ',') && rest) | |
8591 | { | |
6f781ee3 | 8592 | rest->reset (savestring (tok, strlen (tok))); |
e7e0cddf SS |
8593 | return; |
8594 | } | |
8595 | ||
f1735a53 | 8596 | end_tok = skip_to_space (tok); |
d634f2de | 8597 | |
018d34a4 | 8598 | toklen = end_tok - tok; |
d634f2de | 8599 | |
018d34a4 VP |
8600 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8601 | { | |
8602 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
8603 | try |
8604 | { | |
8605 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
8606 | } | |
8607 | catch (const gdb_exception_error &) | |
8608 | { | |
8609 | if (!force) | |
8610 | throw; | |
8611 | else | |
8612 | tok = tok + strlen (tok); | |
8613 | } | |
018d34a4 | 8614 | cond_end = tok; |
6f781ee3 | 8615 | cond_string->reset (savestring (cond_start, cond_end - cond_start)); |
018d34a4 | 8616 | } |
733d554a TBA |
8617 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
8618 | { | |
5759831a | 8619 | tok = tok + toklen; |
733d554a TBA |
8620 | force = true; |
8621 | } | |
018d34a4 VP |
8622 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
8623 | { | |
5d5658a1 PA |
8624 | const char *tmptok; |
8625 | struct thread_info *thr; | |
d634f2de | 8626 | |
018d34a4 | 8627 | tok = end_tok + 1; |
5d5658a1 | 8628 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
8629 | if (tok == tmptok) |
8630 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 8631 | *thread = thr->global_num; |
bbc13ae3 | 8632 | tok = tmptok; |
018d34a4 | 8633 | } |
4a306c9a JB |
8634 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8635 | { | |
8636 | char *tmptok; | |
8637 | ||
8638 | tok = end_tok + 1; | |
bbc13ae3 | 8639 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
8640 | if (tok == tmptok) |
8641 | error (_("Junk after task keyword.")); | |
8642 | if (!valid_task_id (*task)) | |
b6199126 | 8643 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 8644 | tok = tmptok; |
4a306c9a | 8645 | } |
e7e0cddf SS |
8646 | else if (rest) |
8647 | { | |
6f781ee3 | 8648 | rest->reset (savestring (tok, strlen (tok))); |
ccab2054 | 8649 | return; |
e7e0cddf | 8650 | } |
018d34a4 VP |
8651 | else |
8652 | error (_("Junk at end of arguments.")); | |
8653 | } | |
8654 | } | |
8655 | ||
b5fa468f TBA |
8656 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
8657 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
8658 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
8659 | for the description of these parameters and INPUT. */ | |
8660 | ||
8661 | static void | |
8662 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
6f781ee3 TT |
8663 | const char *input, |
8664 | gdb::unique_xmalloc_ptr<char> *cond_string, | |
8665 | int *thread, int *task, | |
8666 | gdb::unique_xmalloc_ptr<char> *rest) | |
b5fa468f TBA |
8667 | { |
8668 | int num_failures = 0; | |
8669 | for (auto &sal : sals) | |
8670 | { | |
6f781ee3 | 8671 | gdb::unique_xmalloc_ptr<char> cond; |
b5fa468f TBA |
8672 | int thread_id = 0; |
8673 | int task_id = 0; | |
6f781ee3 | 8674 | gdb::unique_xmalloc_ptr<char> remaining; |
b5fa468f TBA |
8675 | |
8676 | /* Here we want to parse 'arg' to separate condition from thread | |
8677 | number. But because parsing happens in a context and the | |
8678 | contexts of sals might be different, try each until there is | |
8679 | success. Finding one successful parse is sufficient for our | |
8680 | goal. When setting the breakpoint we'll re-parse the | |
8681 | condition in the context of each sal. */ | |
8682 | try | |
8683 | { | |
8684 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
8685 | &task_id, &remaining); | |
6f781ee3 | 8686 | *cond_string = std::move (cond); |
b5fa468f TBA |
8687 | *thread = thread_id; |
8688 | *task = task_id; | |
6f781ee3 | 8689 | *rest = std::move (remaining); |
b5fa468f TBA |
8690 | break; |
8691 | } | |
8692 | catch (const gdb_exception_error &e) | |
8693 | { | |
8694 | num_failures++; | |
8695 | /* If no sal remains, do not continue. */ | |
8696 | if (num_failures == sals.size ()) | |
8697 | throw; | |
8698 | } | |
8699 | } | |
8700 | } | |
8701 | ||
0fb4aa4b PA |
8702 | /* Decode a static tracepoint marker spec. */ |
8703 | ||
6c5b2ebe | 8704 | static std::vector<symtab_and_line> |
f00aae0f | 8705 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 8706 | { |
f00aae0f KS |
8707 | const char *p = &(*arg_p)[3]; |
8708 | const char *endp; | |
0fb4aa4b | 8709 | |
f1735a53 | 8710 | p = skip_spaces (p); |
0fb4aa4b | 8711 | |
f1735a53 | 8712 | endp = skip_to_space (p); |
0fb4aa4b | 8713 | |
81b1e71c | 8714 | std::string marker_str (p, endp - p); |
0fb4aa4b | 8715 | |
5d9310c4 SM |
8716 | std::vector<static_tracepoint_marker> markers |
8717 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
8718 | if (markers.empty ()) | |
81b1e71c TT |
8719 | error (_("No known static tracepoint marker named %s"), |
8720 | marker_str.c_str ()); | |
0fb4aa4b | 8721 | |
6c5b2ebe | 8722 | std::vector<symtab_and_line> sals; |
5d9310c4 | 8723 | sals.reserve (markers.size ()); |
0fb4aa4b | 8724 | |
5d9310c4 | 8725 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 8726 | { |
5d9310c4 SM |
8727 | symtab_and_line sal = find_pc_line (marker.address, 0); |
8728 | sal.pc = marker.address; | |
6c5b2ebe | 8729 | sals.push_back (sal); |
5d9310c4 | 8730 | } |
0fb4aa4b | 8731 | |
0fb4aa4b PA |
8732 | *arg_p = endp; |
8733 | return sals; | |
8734 | } | |
8735 | ||
bac7c5cf GB |
8736 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
8737 | according to IS_TRACEPOINT. */ | |
8738 | ||
8739 | static const struct breakpoint_ops * | |
8740 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
8741 | bool is_tracepoint) | |
8742 | { | |
8743 | if (is_tracepoint) | |
8744 | { | |
8745 | if (location_type == PROBE_LOCATION) | |
8746 | return &tracepoint_probe_breakpoint_ops; | |
8747 | else | |
a0cd5f08 | 8748 | return &base_breakpoint_ops; |
bac7c5cf GB |
8749 | } |
8750 | else | |
8751 | { | |
8752 | if (location_type == PROBE_LOCATION) | |
8753 | return &bkpt_probe_breakpoint_ops; | |
8754 | else | |
a0cd5f08 | 8755 | return &base_breakpoint_ops; |
bac7c5cf GB |
8756 | } |
8757 | } | |
8758 | ||
8759 | /* See breakpoint.h. */ | |
8760 | ||
8761 | const struct breakpoint_ops * | |
8762 | breakpoint_ops_for_event_location (const struct event_location *location, | |
8763 | bool is_tracepoint) | |
8764 | { | |
8765 | if (location != nullptr) | |
8766 | return breakpoint_ops_for_event_location_type | |
8767 | (event_location_type (location), is_tracepoint); | |
a0cd5f08 | 8768 | return &base_breakpoint_ops; |
bac7c5cf GB |
8769 | } |
8770 | ||
f00aae0f | 8771 | /* See breakpoint.h. */ |
0101ce28 | 8772 | |
8cdf0e15 VP |
8773 | int |
8774 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 8775 | struct event_location *location, |
e1e01040 PA |
8776 | const char *cond_string, |
8777 | int thread, const char *extra_string, | |
10a636cc | 8778 | bool force_condition, int parse_extra, |
0fb4aa4b | 8779 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
8780 | int ignore_count, |
8781 | enum auto_boolean pending_break_support, | |
c0a91b2b | 8782 | const struct breakpoint_ops *ops, |
44f238bb PA |
8783 | int from_tty, int enabled, int internal, |
8784 | unsigned flags) | |
c3f6f71d | 8785 | { |
7efd8fc2 | 8786 | struct linespec_result canonical; |
0101ce28 | 8787 | int pending = 0; |
4a306c9a | 8788 | int task = 0; |
86b17b60 | 8789 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 8790 | |
348d480f PA |
8791 | gdb_assert (ops != NULL); |
8792 | ||
f00aae0f KS |
8793 | /* If extra_string isn't useful, set it to NULL. */ |
8794 | if (extra_string != NULL && *extra_string == '\0') | |
8795 | extra_string = NULL; | |
8796 | ||
a70b8144 | 8797 | try |
b78a6381 | 8798 | { |
03ada39e | 8799 | ops->create_sals_from_location (location, &canonical); |
b78a6381 | 8800 | } |
230d2906 | 8801 | catch (const gdb_exception_error &e) |
0101ce28 | 8802 | { |
492d29ea PA |
8803 | /* If caller is interested in rc value from parse, set |
8804 | value. */ | |
8805 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 8806 | { |
05ff989b AC |
8807 | /* If pending breakpoint support is turned off, throw |
8808 | error. */ | |
fa8d40ab JJ |
8809 | |
8810 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 8811 | throw; |
723a2275 VP |
8812 | |
8813 | exception_print (gdb_stderr, e); | |
fa8d40ab | 8814 | |
dda83cd7 | 8815 | /* If pending breakpoint support is auto query and the user |
05ff989b | 8816 | selects no, then simply return the error code. */ |
059fb39f | 8817 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
8818 | && !nquery (_("Make %s pending on future shared library load? "), |
8819 | bptype_string (type_wanted))) | |
fd9b8c24 | 8820 | return 0; |
fa8d40ab | 8821 | |
05ff989b AC |
8822 | /* At this point, either the user was queried about setting |
8823 | a pending breakpoint and selected yes, or pending | |
8824 | breakpoint behavior is on and thus a pending breakpoint | |
8825 | is defaulted on behalf of the user. */ | |
f00aae0f | 8826 | pending = 1; |
0101ce28 | 8827 | } |
492d29ea | 8828 | else |
eedc3f4f | 8829 | throw; |
0101ce28 | 8830 | } |
492d29ea | 8831 | |
6c5b2ebe | 8832 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 8833 | return 0; |
c3f6f71d | 8834 | |
c3f6f71d JM |
8835 | /* Resolve all line numbers to PC's and verify that the addresses |
8836 | are ok for the target. */ | |
0101ce28 | 8837 | if (!pending) |
f8eba3c6 | 8838 | { |
6c5b2ebe PA |
8839 | for (auto &lsal : canonical.lsals) |
8840 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 8841 | } |
c3f6f71d | 8842 | |
7a697b8d | 8843 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 8844 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 8845 | { |
6c5b2ebe PA |
8846 | for (const auto &lsal : canonical.lsals) |
8847 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 8848 | } |
7a697b8d | 8849 | |
c3f6f71d JM |
8850 | /* Verify that condition can be parsed, before setting any |
8851 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 8852 | breakpoint. */ |
0101ce28 | 8853 | if (!pending) |
c3f6f71d | 8854 | { |
e1e01040 PA |
8855 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
8856 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
8857 | ||
f00aae0f | 8858 | if (parse_extra) |
dda83cd7 | 8859 | { |
6f781ee3 TT |
8860 | gdb::unique_xmalloc_ptr<char> rest; |
8861 | gdb::unique_xmalloc_ptr<char> cond; | |
52d361e1 | 8862 | |
6c5b2ebe | 8863 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 8864 | |
b5fa468f TBA |
8865 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
8866 | &cond, &thread, &task, &rest); | |
6f781ee3 TT |
8867 | cond_string_copy = std::move (cond); |
8868 | extra_string_copy = std::move (rest); | |
dda83cd7 | 8869 | } |
2f069f6f | 8870 | else |
dda83cd7 | 8871 | { |
f00aae0f KS |
8872 | if (type_wanted != bp_dprintf |
8873 | && extra_string != NULL && *extra_string != '\0') | |
8874 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 8875 | |
10a636cc TBA |
8876 | /* Check the validity of the condition. We should error out |
8877 | if the condition is invalid at all of the locations and | |
8878 | if it is not forced. In the PARSE_EXTRA case above, this | |
8879 | check is done when parsing the EXTRA_STRING. */ | |
8880 | if (cond_string != nullptr && !force_condition) | |
8881 | { | |
8882 | int num_failures = 0; | |
8883 | const linespec_sals &lsal = canonical.lsals[0]; | |
8884 | for (const auto &sal : lsal.sals) | |
8885 | { | |
8886 | const char *cond = cond_string; | |
8887 | try | |
8888 | { | |
8889 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
8890 | /* One success is sufficient to keep going. */ | |
8891 | break; | |
8892 | } | |
8893 | catch (const gdb_exception_error &) | |
8894 | { | |
8895 | num_failures++; | |
8896 | /* If this is the last sal, error out. */ | |
8897 | if (num_failures == lsal.sals.size ()) | |
8898 | throw; | |
8899 | } | |
8900 | } | |
8901 | } | |
8902 | ||
0878d0fa YQ |
8903 | /* Create a private copy of condition string. */ |
8904 | if (cond_string) | |
e1e01040 | 8905 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
8906 | /* Create a private copy of any extra string. */ |
8907 | if (extra_string) | |
e1e01040 | 8908 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 8909 | } |
0fb4aa4b | 8910 | |
52d361e1 | 8911 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
8912 | std::move (cond_string_copy), |
8913 | std::move (extra_string_copy), | |
8914 | type_wanted, | |
d9b3f62e | 8915 | tempflag ? disp_del : disp_donttouch, |
ef4848c7 | 8916 | thread, task, ignore_count, |
44f238bb | 8917 | from_tty, enabled, internal, flags); |
c906108c | 8918 | } |
0101ce28 JJ |
8919 | else |
8920 | { | |
73063f51 TT |
8921 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (gdbarch, |
8922 | type_wanted); | |
d28cd78a | 8923 | b->location = copy_event_location (location); |
bfccc43c | 8924 | |
f00aae0f KS |
8925 | if (parse_extra) |
8926 | b->cond_string = NULL; | |
e12c7713 MK |
8927 | else |
8928 | { | |
8929 | /* Create a private copy of condition string. */ | |
6f781ee3 TT |
8930 | b->cond_string.reset (cond_string != NULL |
8931 | ? xstrdup (cond_string) | |
8932 | : NULL); | |
15630549 | 8933 | b->thread = thread; |
e12c7713 | 8934 | } |
f00aae0f KS |
8935 | |
8936 | /* Create a private copy of any extra string. */ | |
6f781ee3 TT |
8937 | b->extra_string.reset (extra_string != NULL |
8938 | ? xstrdup (extra_string) | |
8939 | : NULL); | |
0101ce28 | 8940 | b->ignore_count = ignore_count; |
0101ce28 | 8941 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8942 | b->condition_not_parsed = 1; |
41447f92 | 8943 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 8944 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 8945 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 8946 | b->pspace = current_program_space; |
8bea4e01 | 8947 | |
b270e6f9 | 8948 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
8949 | } |
8950 | ||
6c5b2ebe | 8951 | if (canonical.lsals.size () > 1) |
95a42b64 | 8952 | { |
3e43a32a MS |
8953 | warning (_("Multiple breakpoints were set.\nUse the " |
8954 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8955 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8956 | } |
8957 | ||
44702360 | 8958 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
8959 | |
8960 | return 1; | |
c3f6f71d | 8961 | } |
c906108c | 8962 | |
348d480f | 8963 | /* Set a breakpoint. |
72b2ff0e VP |
8964 | ARG is a string describing breakpoint address, |
8965 | condition, and thread. | |
8966 | FLAG specifies if a breakpoint is hardware on, | |
8967 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8968 | and BP_TEMPFLAG. */ | |
348d480f | 8969 | |
98deb0da | 8970 | static void |
f2fc3015 | 8971 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 8972 | { |
72b2ff0e | 8973 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
8974 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
8975 | ? bp_hardware_breakpoint | |
8976 | : bp_breakpoint); | |
f00aae0f | 8977 | |
ffc2605c | 8978 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
8979 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
8980 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 8981 | |
8cdf0e15 | 8982 | create_breakpoint (get_current_arch (), |
ffc2605c | 8983 | location.get (), |
10a636cc | 8984 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 8985 | tempflag, type_wanted, |
8cdf0e15 VP |
8986 | 0 /* Ignore count */, |
8987 | pending_break_support, | |
55aa24fb | 8988 | ops, |
8cdf0e15 | 8989 | from_tty, |
84f4c1fe | 8990 | 1 /* enabled */, |
44f238bb PA |
8991 | 0 /* internal */, |
8992 | 0); | |
c906108c SS |
8993 | } |
8994 | ||
c906108c SS |
8995 | /* Helper function for break_command_1 and disassemble_command. */ |
8996 | ||
8997 | void | |
fba45db2 | 8998 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
8999 | { |
9000 | CORE_ADDR pc; | |
9001 | ||
9002 | if (sal->pc == 0 && sal->symtab != NULL) | |
9003 | { | |
9004 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9005 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9006 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9007 | sal->pc = pc; |
6a048695 | 9008 | |
4a64f543 | 9009 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9010 | number, then skip the function prologue if necessary. */ |
6a048695 | 9011 | if (sal->explicit_line) |
059acae7 | 9012 | skip_prologue_sal (sal); |
c906108c SS |
9013 | } |
9014 | ||
9015 | if (sal->section == 0 && sal->symtab != NULL) | |
9016 | { | |
346d1dfe | 9017 | const struct blockvector *bv; |
3977b71f | 9018 | const struct block *b; |
c5aa993b | 9019 | struct symbol *sym; |
c906108c | 9020 | |
43f3e411 | 9021 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
c6159652 | 9022 | sal->symtab->compunit ()); |
c906108c SS |
9023 | if (bv != NULL) |
9024 | { | |
7f0df278 | 9025 | sym = block_linkage_function (b); |
c906108c SS |
9026 | if (sym != NULL) |
9027 | { | |
3c86fae3 SM |
9028 | fixup_symbol_section (sym, sal->symtab->compunit ()->objfile ()); |
9029 | sal->section | |
9030 | = sym->obj_section (sal->symtab->compunit ()->objfile ()); | |
c906108c SS |
9031 | } |
9032 | else | |
9033 | { | |
4a64f543 | 9034 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9035 | just have to look harder. This case can be executed |
9036 | if we have line numbers but no functions (as can | |
9037 | happen in assembly source). */ | |
c906108c | 9038 | |
5ed8105e | 9039 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9040 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9041 | |
5ed8105e | 9042 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9043 | if (msym.minsym) |
1db66e34 | 9044 | sal->section = msym.obj_section (); |
c906108c SS |
9045 | } |
9046 | } | |
9047 | } | |
9048 | } | |
9049 | ||
9050 | void | |
0b39b52e | 9051 | break_command (const char *arg, int from_tty) |
c906108c | 9052 | { |
db107f19 | 9053 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9054 | } |
9055 | ||
c906108c | 9056 | void |
0b39b52e | 9057 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9058 | { |
db107f19 | 9059 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9060 | } |
9061 | ||
c906108c | 9062 | static void |
0b39b52e | 9063 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9064 | { |
db107f19 | 9065 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9066 | } |
9067 | ||
9068 | static void | |
0b39b52e | 9069 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9070 | { |
db107f19 | 9071 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9072 | } |
9073 | ||
e7e0cddf SS |
9074 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9075 | with a prewired command list consisting of a single output command, | |
9076 | built from extra arguments supplied on the dprintf command | |
9077 | line. */ | |
9078 | ||
da821c7b | 9079 | static void |
0b39b52e | 9080 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9081 | { |
ffc2605c | 9082 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9083 | |
9084 | /* If non-NULL, ARG should have been advanced past the location; | |
9085 | the next character must be ','. */ | |
9086 | if (arg != NULL) | |
9087 | { | |
9088 | if (arg[0] != ',' || arg[1] == '\0') | |
9089 | error (_("Format string required")); | |
9090 | else | |
9091 | { | |
9092 | /* Skip the comma. */ | |
9093 | ++arg; | |
9094 | } | |
9095 | } | |
9096 | ||
e7e0cddf | 9097 | create_breakpoint (get_current_arch (), |
ffc2605c | 9098 | location.get (), |
10a636cc | 9099 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9100 | 0, bp_dprintf, |
9101 | 0 /* Ignore count */, | |
9102 | pending_break_support, | |
a0cd5f08 | 9103 | &base_breakpoint_ops, |
e7e0cddf SS |
9104 | from_tty, |
9105 | 1 /* enabled */, | |
9106 | 0 /* internal */, | |
9107 | 0); | |
9108 | } | |
9109 | ||
d3ce09f5 | 9110 | static void |
0b39b52e | 9111 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9112 | { |
9113 | error (_("May only run agent-printf on the target")); | |
9114 | } | |
9115 | ||
ec45bb67 | 9116 | /* Implement the "breakpoint_hit" method for ranged breakpoints. */ |
f1310107 | 9117 | |
ec45bb67 TT |
9118 | int |
9119 | ranged_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
9120 | const address_space *aspace, | |
9121 | CORE_ADDR bp_addr, | |
9122 | const target_waitstatus &ws) | |
f1310107 | 9123 | { |
c272a98c SM |
9124 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
9125 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
9126 | return 0; |
9127 | ||
f1310107 TJB |
9128 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9129 | bl->length, aspace, bp_addr); | |
9130 | } | |
9131 | ||
ec45bb67 | 9132 | /* Implement the "resources_needed" method for ranged breakpoints. */ |
f1310107 | 9133 | |
ec45bb67 TT |
9134 | int |
9135 | ranged_breakpoint::resources_needed (const struct bp_location *bl) | |
f1310107 TJB |
9136 | { |
9137 | return target_ranged_break_num_registers (); | |
9138 | } | |
9139 | ||
ec45bb67 | 9140 | /* Implement the "print_it" method for ranged breakpoints. */ |
f1310107 | 9141 | |
ec45bb67 | 9142 | enum print_stop_action |
7bd86313 | 9143 | ranged_breakpoint::print_it (const bpstat *bs) const |
f1310107 | 9144 | { |
ec45bb67 | 9145 | struct bp_location *bl = loc; |
79a45e25 | 9146 | struct ui_out *uiout = current_uiout; |
f1310107 | 9147 | |
ec45bb67 | 9148 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 TJB |
9149 | |
9150 | /* Ranged breakpoints have only one location. */ | |
9151 | gdb_assert (bl && bl->next == NULL); | |
9152 | ||
ec45bb67 | 9153 | annotate_breakpoint (number); |
f303dbd6 PA |
9154 | |
9155 | maybe_print_thread_hit_breakpoint (uiout); | |
9156 | ||
ec45bb67 | 9157 | if (disposition == disp_del) |
112e8700 | 9158 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9159 | else |
112e8700 SM |
9160 | uiout->text ("Ranged breakpoint "); |
9161 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9162 | { |
112e8700 | 9163 | uiout->field_string ("reason", |
f1310107 | 9164 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
ec45bb67 | 9165 | uiout->field_string ("disp", bpdisp_text (disposition)); |
f1310107 | 9166 | } |
ec45bb67 | 9167 | uiout->field_signed ("bkptno", number); |
112e8700 | 9168 | uiout->text (", "); |
f1310107 TJB |
9169 | |
9170 | return PRINT_SRC_AND_LOC; | |
9171 | } | |
9172 | ||
ec45bb67 | 9173 | /* Implement the "print_one" method for ranged breakpoints. */ |
f1310107 | 9174 | |
ec45bb67 | 9175 | bool |
a67bcaba | 9176 | ranged_breakpoint::print_one (bp_location **last_loc) const |
f1310107 | 9177 | { |
ec45bb67 | 9178 | struct bp_location *bl = loc; |
f1310107 | 9179 | struct value_print_options opts; |
79a45e25 | 9180 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9181 | |
9182 | /* Ranged breakpoints have only one location. */ | |
9183 | gdb_assert (bl && bl->next == NULL); | |
9184 | ||
9185 | get_user_print_options (&opts); | |
9186 | ||
9187 | if (opts.addressprint) | |
9188 | /* We don't print the address range here, it will be printed later | |
9189 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9190 | uiout->field_skip ("addr"); |
f1310107 | 9191 | annotate_field (5); |
ec45bb67 | 9192 | print_breakpoint_location (this, bl); |
f1310107 | 9193 | *last_loc = bl; |
c01e038b TT |
9194 | |
9195 | return true; | |
f1310107 TJB |
9196 | } |
9197 | ||
ec45bb67 | 9198 | /* Implement the "print_one_detail" method for ranged breakpoints. */ |
f1310107 | 9199 | |
ec45bb67 TT |
9200 | void |
9201 | ranged_breakpoint::print_one_detail (struct ui_out *uiout) const | |
f1310107 TJB |
9202 | { |
9203 | CORE_ADDR address_start, address_end; | |
ec45bb67 | 9204 | struct bp_location *bl = loc; |
d7e74731 | 9205 | string_file stb; |
f1310107 TJB |
9206 | |
9207 | gdb_assert (bl); | |
9208 | ||
9209 | address_start = bl->address; | |
9210 | address_end = address_start + bl->length - 1; | |
9211 | ||
112e8700 | 9212 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9213 | stb.printf ("[%s, %s]", |
9214 | print_core_address (bl->gdbarch, address_start), | |
9215 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9216 | uiout->field_stream ("addr", stb); |
9217 | uiout->text ("\n"); | |
f1310107 TJB |
9218 | } |
9219 | ||
ec45bb67 | 9220 | /* Implement the "print_mention" method for ranged breakpoints. */ |
f1310107 | 9221 | |
ec45bb67 | 9222 | void |
b713485d | 9223 | ranged_breakpoint::print_mention () const |
f1310107 | 9224 | { |
ec45bb67 | 9225 | struct bp_location *bl = loc; |
79a45e25 | 9226 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9227 | |
9228 | gdb_assert (bl); | |
ec45bb67 | 9229 | gdb_assert (type == bp_hardware_breakpoint); |
f1310107 | 9230 | |
2d33446d | 9231 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
ec45bb67 | 9232 | number, paddress (bl->gdbarch, bl->address), |
2d33446d | 9233 | paddress (bl->gdbarch, bl->address + bl->length - 1)); |
f1310107 TJB |
9234 | } |
9235 | ||
ec45bb67 | 9236 | /* Implement the "print_recreate" method for ranged breakpoints. */ |
f1310107 | 9237 | |
ec45bb67 | 9238 | void |
4d1ae558 | 9239 | ranged_breakpoint::print_recreate (struct ui_file *fp) const |
f1310107 | 9240 | { |
6cb06a8c | 9241 | gdb_printf (fp, "break-range %s, %s", |
ec45bb67 TT |
9242 | event_location_to_string (location.get ()), |
9243 | event_location_to_string (location_range_end.get ())); | |
04d0163c | 9244 | print_recreate_thread (fp); |
f1310107 TJB |
9245 | } |
9246 | ||
f1310107 TJB |
9247 | /* Find the address where the end of the breakpoint range should be |
9248 | placed, given the SAL of the end of the range. This is so that if | |
9249 | the user provides a line number, the end of the range is set to the | |
9250 | last instruction of the given line. */ | |
9251 | ||
9252 | static CORE_ADDR | |
9253 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9254 | { | |
9255 | CORE_ADDR end; | |
9256 | ||
9257 | /* If the user provided a PC value, use it. Otherwise, | |
9258 | find the address of the end of the given location. */ | |
9259 | if (sal.explicit_pc) | |
9260 | end = sal.pc; | |
9261 | else | |
9262 | { | |
9263 | int ret; | |
9264 | CORE_ADDR start; | |
9265 | ||
9266 | ret = find_line_pc_range (sal, &start, &end); | |
9267 | if (!ret) | |
9268 | error (_("Could not find location of the end of the range.")); | |
9269 | ||
9270 | /* find_line_pc_range returns the start of the next line. */ | |
9271 | end--; | |
9272 | } | |
9273 | ||
9274 | return end; | |
9275 | } | |
9276 | ||
9277 | /* Implement the "break-range" CLI command. */ | |
9278 | ||
9279 | static void | |
0b39b52e | 9280 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9281 | { |
f2fc3015 | 9282 | const char *arg_start; |
f1310107 TJB |
9283 | struct linespec_result canonical_start, canonical_end; |
9284 | int bp_count, can_use_bp, length; | |
9285 | CORE_ADDR end; | |
f1310107 TJB |
9286 | |
9287 | /* We don't support software ranged breakpoints. */ | |
9288 | if (target_ranged_break_num_registers () < 0) | |
9289 | error (_("This target does not support hardware ranged breakpoints.")); | |
9290 | ||
9291 | bp_count = hw_breakpoint_used_count (); | |
9292 | bp_count += target_ranged_break_num_registers (); | |
9293 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9294 | bp_count, 0); | |
9295 | if (can_use_bp < 0) | |
9296 | error (_("Hardware breakpoints used exceeds limit.")); | |
9297 | ||
f8eba3c6 | 9298 | arg = skip_spaces (arg); |
f1310107 TJB |
9299 | if (arg == NULL || arg[0] == '\0') |
9300 | error(_("No address range specified.")); | |
9301 | ||
f8eba3c6 | 9302 | arg_start = arg; |
ffc2605c TT |
9303 | event_location_up start_location = string_to_event_location (&arg, |
9304 | current_language); | |
9305 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9306 | |
9307 | if (arg[0] != ',') | |
9308 | error (_("Too few arguments.")); | |
6c5b2ebe | 9309 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9310 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9311 | |
6c5b2ebe | 9312 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9313 | |
6c5b2ebe PA |
9314 | if (canonical_start.lsals.size () > 1 |
9315 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9316 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9317 | ||
6c5b2ebe | 9318 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9319 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9320 | |
9321 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9322 | arg = skip_spaces (arg); |
f1310107 TJB |
9323 | |
9324 | /* Parse the end location. */ | |
9325 | ||
f1310107 TJB |
9326 | arg_start = arg; |
9327 | ||
f8eba3c6 | 9328 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9329 | parse_breakpoint_sals because we need to specify the start location's |
9330 | symtab and line as the default symtab and line for the end of the | |
9331 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9332 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9333 | event_location_up end_location = string_to_event_location (&arg, |
9334 | current_language); | |
9335 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9336 | sal_start.symtab, sal_start.line, |
9337 | &canonical_end, NULL, NULL); | |
9338 | ||
6c5b2ebe | 9339 | if (canonical_end.lsals.empty ()) |
f1310107 | 9340 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9341 | |
6c5b2ebe PA |
9342 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9343 | if (canonical_end.lsals.size () > 1 | |
9344 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9345 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9346 | ||
6c5b2ebe | 9347 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9348 | |
9349 | end = find_breakpoint_range_end (sal_end); | |
9350 | if (sal_start.pc > end) | |
177b42fe | 9351 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9352 | |
9353 | length = end - sal_start.pc + 1; | |
9354 | if (length < 0) | |
9355 | /* Length overflowed. */ | |
9356 | error (_("Address range too large.")); | |
9357 | else if (length == 1) | |
9358 | { | |
9359 | /* This range is simple enough to be handled by | |
9360 | the `hbreak' command. */ | |
81b1e71c | 9361 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9362 | |
9363 | return; | |
9364 | } | |
9365 | ||
b925bf21 PA |
9366 | /* Now set up the breakpoint and install it. */ |
9367 | ||
9368 | std::unique_ptr<breakpoint> br | |
9369 | (new ranged_breakpoint (get_current_arch (), | |
9370 | sal_start, length, | |
9371 | std::move (start_location), | |
9372 | std::move (end_location))); | |
f1310107 | 9373 | |
27a62b43 | 9374 | install_breakpoint (false, std::move (br), true); |
f1310107 TJB |
9375 | } |
9376 | ||
4a64f543 MS |
9377 | /* Return non-zero if EXP is verified as constant. Returned zero |
9378 | means EXP is variable. Also the constant detection may fail for | |
9379 | some constant expressions and in such case still falsely return | |
9380 | zero. */ | |
2e6e3d9c | 9381 | |
dab72643 | 9382 | static bool |
65d79d4b SDJ |
9383 | watchpoint_exp_is_const (const struct expression *exp) |
9384 | { | |
1eaebe02 | 9385 | return exp->op->constant_p (); |
65d79d4b SDJ |
9386 | } |
9387 | ||
3a292923 | 9388 | /* Implement the "re_set" method for watchpoints. */ |
348d480f | 9389 | |
3a292923 TT |
9390 | void |
9391 | watchpoint::re_set () | |
348d480f PA |
9392 | { |
9393 | /* Watchpoint can be either on expression using entirely global | |
9394 | variables, or it can be on local variables. | |
9395 | ||
9396 | Watchpoints of the first kind are never auto-deleted, and even | |
9397 | persist across program restarts. Since they can use variables | |
9398 | from shared libraries, we need to reparse expression as libraries | |
9399 | are loaded and unloaded. | |
9400 | ||
9401 | Watchpoints on local variables can also change meaning as result | |
9402 | of solib event. For example, if a watchpoint uses both a local | |
9403 | and a global variables in expression, it's a local watchpoint, | |
9404 | but unloading of a shared library will make the expression | |
9405 | invalid. This is not a very common use case, but we still | |
9406 | re-evaluate expression, to avoid surprises to the user. | |
9407 | ||
9408 | Note that for local watchpoints, we re-evaluate it only if | |
9409 | watchpoints frame id is still valid. If it's not, it means the | |
9410 | watchpoint is out of scope and will be deleted soon. In fact, | |
9411 | I'm not sure we'll ever be called in this case. | |
9412 | ||
9413 | If a local watchpoint's frame id is still valid, then | |
3a292923 | 9414 | exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9415 | |
3a5c3e22 PA |
9416 | Don't do anything about disabled watchpoints, since they will be |
9417 | reevaluated again when enabled. */ | |
3a292923 | 9418 | update_watchpoint (this, 1 /* reparse */); |
348d480f PA |
9419 | } |
9420 | ||
3a292923 | 9421 | /* Implement the "insert" method for hardware watchpoints. */ |
77b06cd7 | 9422 | |
3a292923 TT |
9423 | int |
9424 | watchpoint::insert_location (struct bp_location *bl) | |
77b06cd7 | 9425 | { |
3a292923 | 9426 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9427 | |
9428 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9429 | cond_exp.get ()); |
77b06cd7 TJB |
9430 | } |
9431 | ||
3a292923 | 9432 | /* Implement the "remove" method for hardware watchpoints. */ |
77b06cd7 | 9433 | |
3a292923 TT |
9434 | int |
9435 | watchpoint::remove_location (struct bp_location *bl, | |
9436 | enum remove_bp_reason reason) | |
77b06cd7 | 9437 | { |
3a292923 | 9438 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9439 | |
9440 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9441 | cond_exp.get ()); |
e09342b5 TJB |
9442 | } |
9443 | ||
3a292923 TT |
9444 | int |
9445 | watchpoint::breakpoint_hit (const struct bp_location *bl, | |
9446 | const address_space *aspace, CORE_ADDR bp_addr, | |
9447 | const target_waitstatus &ws) | |
e09342b5 | 9448 | { |
348d480f | 9449 | struct breakpoint *b = bl->owner; |
77b06cd7 | 9450 | |
348d480f PA |
9451 | /* Continuable hardware watchpoints are treated as non-existent if the |
9452 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9453 | some data address). Otherwise gdb won't stop on a break instruction | |
9454 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9455 | been defined. Also skip watchpoints which we know did not trigger | |
9456 | (did not match the data address). */ | |
9457 | if (is_hardware_watchpoint (b) | |
3a292923 | 9458 | && watchpoint_triggered == watch_triggered_no) |
348d480f | 9459 | return 0; |
9c06b0b4 | 9460 | |
348d480f | 9461 | return 1; |
9c06b0b4 TJB |
9462 | } |
9463 | ||
3a292923 TT |
9464 | void |
9465 | watchpoint::check_status (bpstat *bs) | |
9c06b0b4 | 9466 | { |
348d480f | 9467 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9468 | |
348d480f | 9469 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9470 | } |
9471 | ||
3a292923 TT |
9472 | /* Implement the "resources_needed" method for hardware |
9473 | watchpoints. */ | |
9c06b0b4 | 9474 | |
3a292923 TT |
9475 | int |
9476 | watchpoint::resources_needed (const struct bp_location *bl) | |
9c06b0b4 | 9477 | { |
3a292923 | 9478 | int length = exact? 1 : bl->length; |
348d480f PA |
9479 | |
9480 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9481 | } |
9482 | ||
3a292923 TT |
9483 | /* Implement the "works_in_software_mode" method for hardware |
9484 | watchpoints. */ | |
9c06b0b4 | 9485 | |
5a61e176 | 9486 | bool |
3a292923 | 9487 | watchpoint::works_in_software_mode () const |
9c06b0b4 | 9488 | { |
efa80663 | 9489 | /* Read and access watchpoints only work with hardware support. */ |
3a292923 | 9490 | return type == bp_watchpoint || type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
9491 | } |
9492 | ||
3a292923 | 9493 | enum print_stop_action |
7bd86313 | 9494 | watchpoint::print_it (const bpstat *bs) const |
9c06b0b4 | 9495 | { |
348d480f | 9496 | struct breakpoint *b; |
348d480f | 9497 | enum print_stop_action result; |
79a45e25 | 9498 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9499 | |
9500 | gdb_assert (bs->bp_location_at != NULL); | |
9501 | ||
348d480f PA |
9502 | b = bs->breakpoint_at; |
9503 | ||
f303dbd6 PA |
9504 | annotate_watchpoint (b->number); |
9505 | maybe_print_thread_hit_breakpoint (uiout); | |
9506 | ||
d7e74731 PA |
9507 | string_file stb; |
9508 | ||
76f9c9cf | 9509 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
9510 | switch (b->type) |
9511 | { | |
348d480f | 9512 | case bp_watchpoint: |
9c06b0b4 | 9513 | case bp_hardware_watchpoint: |
112e8700 SM |
9514 | if (uiout->is_mi_like_p ()) |
9515 | uiout->field_string | |
9516 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 9517 | mention (b); |
76f9c9cf | 9518 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9519 | uiout->text ("\nOld value = "); |
850645cf | 9520 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9521 | uiout->field_stream ("old", stb); |
9522 | uiout->text ("\nNew value = "); | |
3a292923 | 9523 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9524 | uiout->field_stream ("new", stb); |
9525 | uiout->text ("\n"); | |
348d480f PA |
9526 | /* More than one watchpoint may have been triggered. */ |
9527 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
9528 | break; |
9529 | ||
9530 | case bp_read_watchpoint: | |
112e8700 SM |
9531 | if (uiout->is_mi_like_p ()) |
9532 | uiout->field_string | |
9533 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 9534 | mention (b); |
76f9c9cf | 9535 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9536 | uiout->text ("\nValue = "); |
3a292923 | 9537 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9538 | uiout->field_stream ("value", stb); |
9539 | uiout->text ("\n"); | |
348d480f | 9540 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9541 | break; |
9542 | ||
9543 | case bp_access_watchpoint: | |
348d480f PA |
9544 | if (bs->old_val != NULL) |
9545 | { | |
112e8700 SM |
9546 | if (uiout->is_mi_like_p ()) |
9547 | uiout->field_string | |
9548 | ("reason", | |
348d480f PA |
9549 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9550 | mention (b); | |
76f9c9cf | 9551 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9552 | uiout->text ("\nOld value = "); |
850645cf | 9553 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9554 | uiout->field_stream ("old", stb); |
9555 | uiout->text ("\nNew value = "); | |
348d480f PA |
9556 | } |
9557 | else | |
9558 | { | |
9559 | mention (b); | |
112e8700 SM |
9560 | if (uiout->is_mi_like_p ()) |
9561 | uiout->field_string | |
9562 | ("reason", | |
348d480f | 9563 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 9564 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9565 | uiout->text ("\nValue = "); |
348d480f | 9566 | } |
3a292923 | 9567 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9568 | uiout->field_stream ("new", stb); |
9569 | uiout->text ("\n"); | |
348d480f | 9570 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9571 | break; |
9572 | default: | |
348d480f | 9573 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9574 | } |
9575 | ||
348d480f PA |
9576 | return result; |
9577 | } | |
9578 | ||
3a292923 | 9579 | /* Implement the "print_mention" method for hardware watchpoints. */ |
348d480f | 9580 | |
3a292923 | 9581 | void |
b713485d | 9582 | watchpoint::print_mention () const |
348d480f | 9583 | { |
79a45e25 | 9584 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9585 | const char *tuple_name; |
348d480f | 9586 | |
3a292923 | 9587 | switch (type) |
348d480f PA |
9588 | { |
9589 | case bp_watchpoint: | |
112e8700 | 9590 | uiout->text ("Watchpoint "); |
46b9c129 | 9591 | tuple_name = "wpt"; |
348d480f PA |
9592 | break; |
9593 | case bp_hardware_watchpoint: | |
112e8700 | 9594 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 9595 | tuple_name = "wpt"; |
348d480f PA |
9596 | break; |
9597 | case bp_read_watchpoint: | |
112e8700 | 9598 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 9599 | tuple_name = "hw-rwpt"; |
348d480f PA |
9600 | break; |
9601 | case bp_access_watchpoint: | |
112e8700 | 9602 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 9603 | tuple_name = "hw-awpt"; |
348d480f PA |
9604 | break; |
9605 | default: | |
9606 | internal_error (__FILE__, __LINE__, | |
9607 | _("Invalid hardware watchpoint type.")); | |
9608 | } | |
9609 | ||
46b9c129 | 9610 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9611 | uiout->field_signed ("number", number); |
112e8700 | 9612 | uiout->text (": "); |
3a292923 | 9613 | uiout->field_string ("exp", exp_string.get ()); |
348d480f PA |
9614 | } |
9615 | ||
3a292923 | 9616 | /* Implement the "print_recreate" method for watchpoints. */ |
348d480f | 9617 | |
3a292923 | 9618 | void |
4d1ae558 | 9619 | watchpoint::print_recreate (struct ui_file *fp) const |
348d480f | 9620 | { |
3a292923 | 9621 | switch (type) |
348d480f PA |
9622 | { |
9623 | case bp_watchpoint: | |
9624 | case bp_hardware_watchpoint: | |
6cb06a8c | 9625 | gdb_printf (fp, "watch"); |
348d480f PA |
9626 | break; |
9627 | case bp_read_watchpoint: | |
6cb06a8c | 9628 | gdb_printf (fp, "rwatch"); |
348d480f PA |
9629 | break; |
9630 | case bp_access_watchpoint: | |
6cb06a8c | 9631 | gdb_printf (fp, "awatch"); |
348d480f PA |
9632 | break; |
9633 | default: | |
9634 | internal_error (__FILE__, __LINE__, | |
9635 | _("Invalid watchpoint type.")); | |
9636 | } | |
9637 | ||
3a292923 | 9638 | gdb_printf (fp, " %s", exp_string.get ()); |
04d0163c | 9639 | print_recreate_thread (fp); |
348d480f PA |
9640 | } |
9641 | ||
3a292923 | 9642 | /* Implement the "explains_signal" method for watchpoints. */ |
427cd150 | 9643 | |
a6860f3a | 9644 | bool |
3a292923 | 9645 | watchpoint::explains_signal (enum gdb_signal sig) |
427cd150 TT |
9646 | { |
9647 | /* A software watchpoint cannot cause a signal other than | |
9648 | GDB_SIGNAL_TRAP. */ | |
3a292923 | 9649 | if (type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) |
a6860f3a | 9650 | return false; |
427cd150 | 9651 | |
a6860f3a | 9652 | return true; |
427cd150 TT |
9653 | } |
9654 | ||
3a292923 TT |
9655 | struct masked_watchpoint : public watchpoint |
9656 | { | |
73063f51 TT |
9657 | using watchpoint::watchpoint; |
9658 | ||
3a292923 TT |
9659 | int insert_location (struct bp_location *) override; |
9660 | int remove_location (struct bp_location *, | |
9661 | enum remove_bp_reason reason) override; | |
9662 | int resources_needed (const struct bp_location *) override; | |
5a61e176 | 9663 | bool works_in_software_mode () const override; |
7bd86313 | 9664 | enum print_stop_action print_it (const bpstat *bs) const override; |
3a292923 | 9665 | void print_one_detail (struct ui_out *) const override; |
b713485d | 9666 | void print_mention () const override; |
4d1ae558 | 9667 | void print_recreate (struct ui_file *fp) const override; |
3a292923 | 9668 | }; |
348d480f | 9669 | |
3a292923 | 9670 | /* Implement the "insert" method for masked hardware watchpoints. */ |
348d480f | 9671 | |
3a292923 TT |
9672 | int |
9673 | masked_watchpoint::insert_location (struct bp_location *bl) | |
348d480f | 9674 | { |
3a292923 | 9675 | return target_insert_mask_watchpoint (bl->address, hw_wp_mask, |
348d480f PA |
9676 | bl->watchpoint_type); |
9677 | } | |
9678 | ||
3a292923 | 9679 | /* Implement the "remove" method for masked hardware watchpoints. */ |
348d480f | 9680 | |
3a292923 TT |
9681 | int |
9682 | masked_watchpoint::remove_location (struct bp_location *bl, | |
9683 | enum remove_bp_reason reason) | |
348d480f | 9684 | { |
3a292923 | 9685 | return target_remove_mask_watchpoint (bl->address, hw_wp_mask, |
dda83cd7 | 9686 | bl->watchpoint_type); |
348d480f PA |
9687 | } |
9688 | ||
3a292923 TT |
9689 | /* Implement the "resources_needed" method for masked hardware |
9690 | watchpoints. */ | |
348d480f | 9691 | |
3a292923 TT |
9692 | int |
9693 | masked_watchpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 9694 | { |
3a292923 | 9695 | return target_masked_watch_num_registers (bl->address, hw_wp_mask); |
348d480f PA |
9696 | } |
9697 | ||
3a292923 TT |
9698 | /* Implement the "works_in_software_mode" method for masked hardware |
9699 | watchpoints. */ | |
348d480f | 9700 | |
5a61e176 | 9701 | bool |
3a292923 | 9702 | masked_watchpoint::works_in_software_mode () const |
348d480f | 9703 | { |
5a61e176 | 9704 | return false; |
348d480f PA |
9705 | } |
9706 | ||
3a292923 TT |
9707 | /* Implement the "print_it" method for masked hardware |
9708 | watchpoints. */ | |
348d480f | 9709 | |
3a292923 | 9710 | enum print_stop_action |
7bd86313 | 9711 | masked_watchpoint::print_it (const bpstat *bs) const |
348d480f PA |
9712 | { |
9713 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9714 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9715 | |
9716 | /* Masked watchpoints have only one location. */ | |
9717 | gdb_assert (b->loc && b->loc->next == NULL); | |
9718 | ||
f303dbd6 PA |
9719 | annotate_watchpoint (b->number); |
9720 | maybe_print_thread_hit_breakpoint (uiout); | |
9721 | ||
348d480f PA |
9722 | switch (b->type) |
9723 | { | |
9724 | case bp_hardware_watchpoint: | |
112e8700 SM |
9725 | if (uiout->is_mi_like_p ()) |
9726 | uiout->field_string | |
9727 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9728 | break; |
9729 | ||
9730 | case bp_read_watchpoint: | |
112e8700 SM |
9731 | if (uiout->is_mi_like_p ()) |
9732 | uiout->field_string | |
9733 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9734 | break; |
9735 | ||
9736 | case bp_access_watchpoint: | |
112e8700 SM |
9737 | if (uiout->is_mi_like_p ()) |
9738 | uiout->field_string | |
9739 | ("reason", | |
348d480f PA |
9740 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9741 | break; | |
9742 | default: | |
9743 | internal_error (__FILE__, __LINE__, | |
9744 | _("Invalid hardware watchpoint type.")); | |
9745 | } | |
9746 | ||
9747 | mention (b); | |
112e8700 | 9748 | uiout->text (_("\n\ |
9c06b0b4 TJB |
9749 | Check the underlying instruction at PC for the memory\n\ |
9750 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 9751 | uiout->text ("\n"); |
9c06b0b4 TJB |
9752 | |
9753 | /* More than one watchpoint may have been triggered. */ | |
9754 | return PRINT_UNKNOWN; | |
9755 | } | |
9756 | ||
3a292923 TT |
9757 | /* Implement the "print_one_detail" method for masked hardware |
9758 | watchpoints. */ | |
9c06b0b4 | 9759 | |
3a292923 TT |
9760 | void |
9761 | masked_watchpoint::print_one_detail (struct ui_out *uiout) const | |
9c06b0b4 TJB |
9762 | { |
9763 | /* Masked watchpoints have only one location. */ | |
3a292923 | 9764 | gdb_assert (loc && loc->next == NULL); |
9c06b0b4 | 9765 | |
112e8700 | 9766 | uiout->text ("\tmask "); |
3a292923 | 9767 | uiout->field_core_addr ("mask", loc->gdbarch, hw_wp_mask); |
112e8700 | 9768 | uiout->text ("\n"); |
9c06b0b4 TJB |
9769 | } |
9770 | ||
3a292923 TT |
9771 | /* Implement the "print_mention" method for masked hardware |
9772 | watchpoints. */ | |
9c06b0b4 | 9773 | |
3a292923 | 9774 | void |
b713485d | 9775 | masked_watchpoint::print_mention () const |
9c06b0b4 | 9776 | { |
79a45e25 | 9777 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9778 | const char *tuple_name; |
9c06b0b4 | 9779 | |
3a292923 | 9780 | switch (type) |
9c06b0b4 TJB |
9781 | { |
9782 | case bp_hardware_watchpoint: | |
112e8700 | 9783 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 9784 | tuple_name = "wpt"; |
9c06b0b4 TJB |
9785 | break; |
9786 | case bp_read_watchpoint: | |
112e8700 | 9787 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 9788 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
9789 | break; |
9790 | case bp_access_watchpoint: | |
112e8700 | 9791 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 9792 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
9793 | break; |
9794 | default: | |
9795 | internal_error (__FILE__, __LINE__, | |
9796 | _("Invalid hardware watchpoint type.")); | |
9797 | } | |
9798 | ||
46b9c129 | 9799 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9800 | uiout->field_signed ("number", number); |
112e8700 | 9801 | uiout->text (": "); |
3a292923 | 9802 | uiout->field_string ("exp", exp_string.get ()); |
9c06b0b4 TJB |
9803 | } |
9804 | ||
3a292923 TT |
9805 | /* Implement the "print_recreate" method for masked hardware |
9806 | watchpoints. */ | |
9c06b0b4 | 9807 | |
3a292923 | 9808 | void |
4d1ae558 | 9809 | masked_watchpoint::print_recreate (struct ui_file *fp) const |
9c06b0b4 | 9810 | { |
3a292923 | 9811 | switch (type) |
9c06b0b4 TJB |
9812 | { |
9813 | case bp_hardware_watchpoint: | |
6cb06a8c | 9814 | gdb_printf (fp, "watch"); |
9c06b0b4 TJB |
9815 | break; |
9816 | case bp_read_watchpoint: | |
6cb06a8c | 9817 | gdb_printf (fp, "rwatch"); |
9c06b0b4 TJB |
9818 | break; |
9819 | case bp_access_watchpoint: | |
6cb06a8c | 9820 | gdb_printf (fp, "awatch"); |
9c06b0b4 TJB |
9821 | break; |
9822 | default: | |
9823 | internal_error (__FILE__, __LINE__, | |
9824 | _("Invalid hardware watchpoint type.")); | |
9825 | } | |
9826 | ||
3a292923 TT |
9827 | gdb_printf (fp, " %s mask 0x%s", exp_string.get (), |
9828 | phex (hw_wp_mask, sizeof (CORE_ADDR))); | |
04d0163c | 9829 | print_recreate_thread (fp); |
9c06b0b4 TJB |
9830 | } |
9831 | ||
9c06b0b4 TJB |
9832 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ |
9833 | ||
f2478a7e | 9834 | static bool |
9c06b0b4 TJB |
9835 | is_masked_watchpoint (const struct breakpoint *b) |
9836 | { | |
3a292923 | 9837 | return dynamic_cast<const masked_watchpoint *> (b) != nullptr; |
9c06b0b4 TJB |
9838 | } |
9839 | ||
53a5351d | 9840 | /* accessflag: hw_write: watch write, |
dda83cd7 | 9841 | hw_read: watch read, |
53a5351d | 9842 | hw_access: watch access (read or write) */ |
c906108c | 9843 | static void |
bbc13ae3 | 9844 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 9845 | bool just_location, bool internal) |
c906108c | 9846 | { |
c1fc2657 | 9847 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 9848 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 9849 | struct value *result; |
bb9d5f81 | 9850 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
9851 | const char *exp_start = NULL; |
9852 | const char *exp_end = NULL; | |
9853 | const char *tok, *end_tok; | |
9c06b0b4 | 9854 | int toklen = -1; |
bbc13ae3 KS |
9855 | const char *cond_start = NULL; |
9856 | const char *cond_end = NULL; | |
c906108c | 9857 | enum bptype bp_type; |
37e4754d | 9858 | int thread = -1; |
9c06b0b4 TJB |
9859 | /* Flag to indicate whether we are going to use masks for |
9860 | the hardware watchpoint. */ | |
2e362716 | 9861 | bool use_mask = false; |
9c06b0b4 | 9862 | CORE_ADDR mask = 0; |
8a18382f | 9863 | int task = 0; |
c906108c | 9864 | |
37e4754d LM |
9865 | /* Make sure that we actually have parameters to parse. */ |
9866 | if (arg != NULL && arg[0] != '\0') | |
9867 | { | |
bbc13ae3 KS |
9868 | const char *value_start; |
9869 | ||
9870 | exp_end = arg + strlen (arg); | |
37e4754d | 9871 | |
9c06b0b4 TJB |
9872 | /* Look for "parameter value" pairs at the end |
9873 | of the arguments string. */ | |
bbc13ae3 | 9874 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
9875 | { |
9876 | /* Skip whitespace at the end of the argument list. */ | |
9877 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9878 | tok--; | |
9879 | ||
9880 | /* Find the beginning of the last token. | |
9881 | This is the value of the parameter. */ | |
9882 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9883 | tok--; | |
9884 | value_start = tok + 1; | |
9885 | ||
9886 | /* Skip whitespace. */ | |
9887 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9888 | tok--; | |
9889 | ||
9890 | end_tok = tok; | |
9891 | ||
9892 | /* Find the beginning of the second to last token. | |
9893 | This is the parameter itself. */ | |
9894 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9895 | tok--; | |
9896 | tok++; | |
9897 | toklen = end_tok - tok + 1; | |
9898 | ||
61012eef | 9899 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 9900 | { |
5d5658a1 | 9901 | struct thread_info *thr; |
9c06b0b4 TJB |
9902 | /* At this point we've found a "thread" token, which means |
9903 | the user is trying to set a watchpoint that triggers | |
9904 | only in a specific thread. */ | |
5d5658a1 | 9905 | const char *endp; |
37e4754d | 9906 | |
9c06b0b4 TJB |
9907 | if (thread != -1) |
9908 | error(_("You can specify only one thread.")); | |
37e4754d | 9909 | |
9c06b0b4 | 9910 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 9911 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 9912 | |
5d5658a1 | 9913 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 9914 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 9915 | invalid_thread_id_error (value_start); |
9c06b0b4 | 9916 | |
5d5658a1 | 9917 | thread = thr->global_num; |
9c06b0b4 | 9918 | } |
8a18382f TT |
9919 | else if (toklen == 4 && startswith (tok, "task")) |
9920 | { | |
9921 | char *tmp; | |
9922 | ||
9923 | task = strtol (value_start, &tmp, 0); | |
9924 | if (tmp == value_start) | |
9925 | error (_("Junk after task keyword.")); | |
9926 | if (!valid_task_id (task)) | |
9927 | error (_("Unknown task %d."), task); | |
9928 | } | |
61012eef | 9929 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
9930 | { |
9931 | /* We've found a "mask" token, which means the user wants to | |
9932 | create a hardware watchpoint that is going to have the mask | |
9933 | facility. */ | |
9934 | struct value *mask_value, *mark; | |
37e4754d | 9935 | |
9c06b0b4 TJB |
9936 | if (use_mask) |
9937 | error(_("You can specify only one mask.")); | |
37e4754d | 9938 | |
2e362716 | 9939 | use_mask = just_location = true; |
37e4754d | 9940 | |
9c06b0b4 TJB |
9941 | mark = value_mark (); |
9942 | mask_value = parse_to_comma_and_eval (&value_start); | |
9943 | mask = value_as_address (mask_value); | |
9944 | value_free_to_mark (mark); | |
9945 | } | |
9946 | else | |
9947 | /* We didn't recognize what we found. We should stop here. */ | |
9948 | break; | |
37e4754d | 9949 | |
9c06b0b4 TJB |
9950 | /* Truncate the string and get rid of the "parameter value" pair before |
9951 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 9952 | exp_end = tok; |
9c06b0b4 | 9953 | } |
37e4754d | 9954 | } |
bbc13ae3 KS |
9955 | else |
9956 | exp_end = arg; | |
37e4754d | 9957 | |
bbc13ae3 KS |
9958 | /* Parse the rest of the arguments. From here on out, everything |
9959 | is in terms of a newly allocated string instead of the original | |
9960 | ARG. */ | |
81b1e71c TT |
9961 | std::string expression (arg, exp_end - arg); |
9962 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
9963 | innermost_block_tracker tracker; |
9964 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 9965 | exp_end = arg; |
fa8a61dc TT |
9966 | /* Remove trailing whitespace from the expression before saving it. |
9967 | This makes the eventual display of the expression string a bit | |
9968 | prettier. */ | |
9969 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
9970 | --exp_end; | |
9971 | ||
65d79d4b | 9972 | /* Checking if the expression is not constant. */ |
4d01a485 | 9973 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
9974 | { |
9975 | int len; | |
9976 | ||
9977 | len = exp_end - exp_start; | |
9978 | while (len > 0 && isspace (exp_start[len - 1])) | |
9979 | len--; | |
9980 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
9981 | } | |
9982 | ||
699bd4cf | 9983 | exp_valid_block = tracker.block (); |
b926417a | 9984 | struct value *mark = value_mark (); |
850645cf | 9985 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
9986 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
9987 | just_location); | |
06a64a0b | 9988 | |
850645cf | 9989 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 9990 | { |
850645cf TT |
9991 | saved_bitpos = value_bitpos (val_as_value); |
9992 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
9993 | } |
9994 | ||
850645cf | 9995 | value_ref_ptr val; |
06a64a0b TT |
9996 | if (just_location) |
9997 | { | |
9c06b0b4 TJB |
9998 | int ret; |
9999 | ||
06a64a0b | 10000 | exp_valid_block = NULL; |
850645cf | 10001 | val = release_value (value_addr (result)); |
06a64a0b | 10002 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10003 | |
10004 | if (use_mask) | |
10005 | { | |
850645cf | 10006 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10007 | mask); |
10008 | if (ret == -1) | |
10009 | error (_("This target does not support masked watchpoints.")); | |
10010 | else if (ret == -2) | |
10011 | error (_("Invalid mask or memory region.")); | |
10012 | } | |
06a64a0b | 10013 | } |
850645cf TT |
10014 | else if (val_as_value != NULL) |
10015 | val = release_value (val_as_value); | |
c906108c | 10016 | |
f1735a53 TT |
10017 | tok = skip_spaces (arg); |
10018 | end_tok = skip_to_space (tok); | |
c906108c SS |
10019 | |
10020 | toklen = end_tok - tok; | |
10021 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10022 | { | |
10023 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10024 | innermost_block_tracker if_tracker; |
10025 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10026 | |
10027 | /* The watchpoint expression may not be local, but the condition | |
10028 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10029 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10030 | |
c906108c SS |
10031 | cond_end = tok; |
10032 | } | |
10033 | if (*tok) | |
8a3fe4f8 | 10034 | error (_("Junk at end of command.")); |
c906108c | 10035 | |
441d7c93 PA |
10036 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10037 | ||
10038 | /* Save this because create_internal_breakpoint below invalidates | |
10039 | 'wp_frame'. */ | |
10040 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10041 | |
10042 | /* If the expression is "local", then set up a "watchpoint scope" | |
10043 | breakpoint at the point where we've left the scope of the watchpoint | |
10044 | expression. Create the scope breakpoint before the watchpoint, so | |
10045 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10046 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10047 | { |
441d7c93 PA |
10048 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10049 | ||
10050 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10051 | { |
441d7c93 PA |
10052 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10053 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10054 | ||
24b21115 | 10055 | scope_breakpoint |
441d7c93 | 10056 | = create_internal_breakpoint (caller_arch, caller_pc, |
9efa3c7f | 10057 | bp_watchpoint_scope); |
d983da9c | 10058 | |
441d7c93 PA |
10059 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10060 | wp_frame = NULL; | |
10061 | ||
edb3359d | 10062 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10063 | |
edb3359d DJ |
10064 | /* Automatically delete the breakpoint when it hits. */ |
10065 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10066 | |
edb3359d | 10067 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10068 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10069 | |
edb3359d | 10070 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10071 | scope_breakpoint->loc->gdbarch = caller_arch; |
10072 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10073 | scope_breakpoint->loc->address |
a6d9a66e UW |
10074 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10075 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10076 | scope_breakpoint->type); |
10077 | } | |
d983da9c DJ |
10078 | } |
10079 | ||
e8369a73 AB |
10080 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10081 | watchpoints here even if hardware watchpoints are turned off, a call | |
10082 | to update_watchpoint later in this function will cause the type to | |
10083 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10084 | ||
10085 | if (accessflag == hw_read) | |
10086 | bp_type = bp_read_watchpoint; | |
10087 | else if (accessflag == hw_access) | |
10088 | bp_type = bp_access_watchpoint; | |
10089 | else | |
10090 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10091 | |
3a292923 | 10092 | std::unique_ptr<watchpoint> w; |
348d480f | 10093 | if (use_mask) |
73063f51 | 10094 | w.reset (new masked_watchpoint (nullptr, bp_type)); |
348d480f | 10095 | else |
73063f51 | 10096 | w.reset (new watchpoint (nullptr, bp_type)); |
3a292923 | 10097 | |
c1fc2657 | 10098 | w->thread = thread; |
8a18382f | 10099 | w->task = task; |
c1fc2657 SM |
10100 | w->disposition = disp_donttouch; |
10101 | w->pspace = current_program_space; | |
b22e99fd | 10102 | w->exp = std::move (exp); |
3a5c3e22 PA |
10103 | w->exp_valid_block = exp_valid_block; |
10104 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10105 | if (just_location) |
10106 | { | |
850645cf TT |
10107 | struct type *t = value_type (val.get ()); |
10108 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10109 | |
43cc5389 | 10110 | w->exp_string_reparse |
a4c50be3 | 10111 | = current_language->watch_location_expression (t, addr); |
06a64a0b | 10112 | |
8579fd13 AB |
10113 | w->exp_string = xstrprintf ("-location %.*s", |
10114 | (int) (exp_end - exp_start), exp_start); | |
06a64a0b TT |
10115 | } |
10116 | else | |
a4c50be3 | 10117 | w->exp_string.reset (savestring (exp_start, exp_end - exp_start)); |
9c06b0b4 TJB |
10118 | |
10119 | if (use_mask) | |
10120 | { | |
3a5c3e22 | 10121 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10122 | } |
10123 | else | |
10124 | { | |
3a5c3e22 | 10125 | w->val = val; |
bb9d5f81 PP |
10126 | w->val_bitpos = saved_bitpos; |
10127 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10128 | w->val_valid = true; |
9c06b0b4 | 10129 | } |
77b06cd7 | 10130 | |
c906108c | 10131 | if (cond_start) |
6f781ee3 | 10132 | w->cond_string.reset (savestring (cond_start, cond_end - cond_start)); |
c906108c | 10133 | else |
c1fc2657 | 10134 | w->cond_string = 0; |
c5aa993b | 10135 | |
441d7c93 | 10136 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10137 | { |
441d7c93 | 10138 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10139 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10140 | } |
c906108c | 10141 | else |
f6bc2008 | 10142 | { |
3a5c3e22 PA |
10143 | w->watchpoint_frame = null_frame_id; |
10144 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10145 | } |
c906108c | 10146 | |
d983da9c | 10147 | if (scope_breakpoint != NULL) |
c906108c | 10148 | { |
d983da9c DJ |
10149 | /* The scope breakpoint is related to the watchpoint. We will |
10150 | need to act on them together. */ | |
c1fc2657 | 10151 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10152 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10153 | } |
d983da9c | 10154 | |
06a64a0b TT |
10155 | if (!just_location) |
10156 | value_free_to_mark (mark); | |
2d134ed3 | 10157 | |
b270e6f9 TT |
10158 | /* Finally update the new watchpoint. This creates the locations |
10159 | that should be inserted. */ | |
10160 | update_watchpoint (w.get (), 1); | |
a9634178 | 10161 | |
b270e6f9 | 10162 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10163 | } |
10164 | ||
e09342b5 | 10165 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10166 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10167 | |
c906108c | 10168 | static int |
a6535de1 | 10169 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10170 | { |
10171 | int found_memory_cnt = 0; | |
10172 | ||
10173 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10174 | if (!can_use_hw_watchpoints) |
c906108c | 10175 | return 0; |
c5aa993b | 10176 | |
a6535de1 TT |
10177 | gdb_assert (!vals.empty ()); |
10178 | struct value *head = vals[0].get (); | |
10179 | ||
5c44784c JM |
10180 | /* Make sure that the value of the expression depends only upon |
10181 | memory contents, and values computed from them within GDB. If we | |
10182 | find any register references or function calls, we can't use a | |
10183 | hardware watchpoint. | |
10184 | ||
10185 | The idea here is that evaluating an expression generates a series | |
10186 | of values, one holding the value of every subexpression. (The | |
10187 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10188 | a*b+c.) GDB's values hold almost enough information to establish | |
10189 | the criteria given above --- they identify memory lvalues, | |
10190 | register lvalues, computed values, etcetera. So we can evaluate | |
10191 | the expression, and then scan the chain of values that leaves | |
10192 | behind to decide whether we can detect any possible change to the | |
10193 | expression's final value using only hardware watchpoints. | |
10194 | ||
10195 | However, I don't think that the values returned by inferior | |
10196 | function calls are special in any way. So this function may not | |
10197 | notice that an expression involving an inferior function call | |
10198 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10199 | for (const value_ref_ptr &iter : vals) |
c906108c | 10200 | { |
a6535de1 TT |
10201 | struct value *v = iter.get (); |
10202 | ||
5c44784c | 10203 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10204 | { |
8464be76 DJ |
10205 | if (v != head && value_lazy (v)) |
10206 | /* A lazy memory lvalue in the chain is one that GDB never | |
10207 | needed to fetch; we either just used its address (e.g., | |
10208 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10209 | in `a,b'). This doesn't apply to HEAD; if that is | |
10210 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10211 | ; |
53a5351d | 10212 | else |
5c44784c JM |
10213 | { |
10214 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10215 | it with hardware watchpoints. */ |
df407dfe | 10216 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10217 | |
10218 | /* We only watch structs and arrays if user asked for it | |
10219 | explicitly, never if they just happen to appear in a | |
10220 | middle of some value chain. */ | |
10221 | if (v == head | |
78134374 SM |
10222 | || (vtype->code () != TYPE_CODE_STRUCT |
10223 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10224 | { |
42ae5230 | 10225 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10226 | int len; |
10227 | int num_regs; | |
10228 | ||
a9634178 | 10229 | len = (target_exact_watchpoints |
e09342b5 TJB |
10230 | && is_scalar_type_recursive (vtype))? |
10231 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10232 | |
e09342b5 TJB |
10233 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10234 | if (!num_regs) | |
2e70b7b9 MS |
10235 | return 0; |
10236 | else | |
e09342b5 | 10237 | found_memory_cnt += num_regs; |
2e70b7b9 | 10238 | } |
5c44784c | 10239 | } |
c5aa993b | 10240 | } |
5086187c AC |
10241 | else if (VALUE_LVAL (v) != not_lval |
10242 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10243 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10244 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10245 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10246 | } |
10247 | ||
10248 | /* The expression itself looks suitable for using a hardware | |
10249 | watchpoint, but give the target machine a chance to reject it. */ | |
10250 | return found_memory_cnt; | |
10251 | } | |
10252 | ||
8b93c638 | 10253 | void |
2e362716 | 10254 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10255 | { |
84f4c1fe | 10256 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10257 | } |
10258 | ||
a15a5258 AB |
10259 | /* Options for the watch, awatch, and rwatch commands. */ |
10260 | ||
10261 | struct watch_options | |
10262 | { | |
10263 | /* For -location. */ | |
10264 | bool location = false; | |
10265 | }; | |
10266 | ||
10267 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10268 | ||
10269 | Historically GDB always accepted both '-location' and '-l' flags for | |
10270 | these commands (both flags being synonyms). When converting to the | |
10271 | newer option scheme only '-location' is added here. That's fine (for | |
10272 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10273 | accepted, so '-l', '-loc', are now all accepted. | |
10274 | ||
10275 | What this means is that, if in the future, we add any new flag here | |
10276 | that starts with '-l' then this will break backward compatibility, so | |
10277 | please, don't do that! */ | |
10278 | ||
10279 | static const gdb::option::option_def watch_option_defs[] = { | |
10280 | gdb::option::flag_option_def<watch_options> { | |
10281 | "location", | |
10282 | [] (watch_options *opt) { return &opt->location; }, | |
10283 | N_("\ | |
10284 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10285 | -l can be used as a short form of -location."), | |
10286 | }, | |
10287 | }; | |
10288 | ||
10289 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10290 | commands. */ | |
10291 | ||
10292 | static gdb::option::option_def_group | |
10293 | make_watch_options_def_group (watch_options *opts) | |
10294 | { | |
10295 | return {{watch_option_defs}, opts}; | |
10296 | } | |
10297 | ||
06a64a0b TT |
10298 | /* A helper function that looks for the "-location" argument and then |
10299 | calls watch_command_1. */ | |
10300 | ||
10301 | static void | |
0b39b52e | 10302 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10303 | { |
a15a5258 AB |
10304 | watch_options opts; |
10305 | auto grp = make_watch_options_def_group (&opts); | |
10306 | gdb::option::process_options | |
10307 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10308 | if (arg != nullptr && *arg == '\0') | |
10309 | arg = nullptr; | |
10310 | ||
10311 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10312 | } | |
06a64a0b | 10313 | |
a15a5258 AB |
10314 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10315 | static void | |
10316 | watch_command_completer (struct cmd_list_element *ignore, | |
10317 | completion_tracker &tracker, | |
10318 | const char *text, const char * /*word*/) | |
10319 | { | |
10320 | const auto group = make_watch_options_def_group (nullptr); | |
10321 | if (gdb::option::complete_options | |
10322 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10323 | return; | |
06a64a0b | 10324 | |
a15a5258 AB |
10325 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10326 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10327 | } |
8926118c | 10328 | |
c5aa993b | 10329 | static void |
0b39b52e | 10330 | watch_command (const char *arg, int from_tty) |
c906108c | 10331 | { |
06a64a0b | 10332 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10333 | } |
10334 | ||
8b93c638 | 10335 | void |
2e362716 | 10336 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10337 | { |
84f4c1fe | 10338 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10339 | } |
8926118c | 10340 | |
c5aa993b | 10341 | static void |
0b39b52e | 10342 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10343 | { |
06a64a0b | 10344 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10345 | } |
10346 | ||
8b93c638 | 10347 | void |
2e362716 | 10348 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10349 | { |
84f4c1fe | 10350 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10351 | } |
8926118c | 10352 | |
c5aa993b | 10353 | static void |
0b39b52e | 10354 | awatch_command (const char *arg, int from_tty) |
c906108c | 10355 | { |
06a64a0b | 10356 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10357 | } |
c906108c | 10358 | \f |
c5aa993b | 10359 | |
cfc31633 PA |
10360 | /* Data for the FSM that manages the until(location)/advance commands |
10361 | in infcmd.c. Here because it uses the mechanisms of | |
10362 | breakpoints. */ | |
c906108c | 10363 | |
46e3ed7f | 10364 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10365 | { |
46e3ed7f | 10366 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10367 | int thread; |
10368 | ||
df631783 PA |
10369 | /* The breakpoint set at the return address in the caller frame, |
10370 | plus breakpoints at all the destination locations. */ | |
10371 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 10372 | |
46e3ed7f | 10373 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 10374 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
10375 | : thread_fsm (cmd_interp), |
10376 | thread (thread), | |
df631783 | 10377 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
10378 | { |
10379 | } | |
cfc31633 | 10380 | |
46e3ed7f TT |
10381 | void clean_up (struct thread_info *thread) override; |
10382 | bool should_stop (struct thread_info *thread) override; | |
10383 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10384 | }; |
10385 | ||
cfc31633 PA |
10386 | /* Implementation of the 'should_stop' FSM method for the |
10387 | until(location)/advance commands. */ | |
10388 | ||
46e3ed7f TT |
10389 | bool |
10390 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10391 | { |
df631783 PA |
10392 | for (const breakpoint_up &bp : breakpoints) |
10393 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
10394 | bp.get ()) != NULL) | |
10395 | { | |
10396 | set_finished (); | |
10397 | break; | |
10398 | } | |
cfc31633 | 10399 | |
46e3ed7f | 10400 | return true; |
cfc31633 PA |
10401 | } |
10402 | ||
10403 | /* Implementation of the 'clean_up' FSM method for the | |
10404 | until(location)/advance commands. */ | |
10405 | ||
46e3ed7f TT |
10406 | void |
10407 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10408 | { |
cfc31633 | 10409 | /* Clean up our temporary breakpoints. */ |
df631783 | 10410 | breakpoints.clear (); |
46e3ed7f | 10411 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
10412 | } |
10413 | ||
10414 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10415 | until(location)/advance commands. */ | |
10416 | ||
46e3ed7f TT |
10417 | enum async_reply_reason |
10418 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10419 | { |
10420 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10421 | } |
10422 | ||
c906108c | 10423 | void |
f2fc3015 | 10424 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10425 | { |
8556afb4 PA |
10426 | struct frame_info *frame; |
10427 | struct gdbarch *frame_gdbarch; | |
10428 | struct frame_id stack_frame_id; | |
10429 | struct frame_id caller_frame_id; | |
186c406b TT |
10430 | int thread; |
10431 | struct thread_info *tp; | |
c906108c | 10432 | |
70509625 | 10433 | clear_proceed_status (0); |
c906108c SS |
10434 | |
10435 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10436 | this function. */ |
c5aa993b | 10437 | |
ffc2605c | 10438 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 10439 | |
6c5b2ebe PA |
10440 | std::vector<symtab_and_line> sals |
10441 | = (last_displayed_sal_is_valid () | |
10442 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
10443 | get_last_displayed_symtab (), | |
10444 | get_last_displayed_line ()) | |
10445 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 10446 | NULL, NULL, 0)); |
c5aa993b | 10447 | |
df631783 | 10448 | if (sals.empty ()) |
8a3fe4f8 | 10449 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10450 | |
c906108c | 10451 | if (*arg) |
8a3fe4f8 | 10452 | error (_("Junk at end of arguments.")); |
c5aa993b | 10453 | |
186c406b | 10454 | tp = inferior_thread (); |
5d5658a1 | 10455 | thread = tp->global_num; |
186c406b | 10456 | |
8556afb4 PA |
10457 | /* Note linespec handling above invalidates the frame chain. |
10458 | Installing a breakpoint also invalidates the frame chain (as it | |
10459 | may need to switch threads), so do any frame handling before | |
10460 | that. */ | |
10461 | ||
10462 | frame = get_selected_frame (NULL); | |
10463 | frame_gdbarch = get_frame_arch (frame); | |
10464 | stack_frame_id = get_stack_frame_id (frame); | |
10465 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 10466 | |
ae66c1fc EZ |
10467 | /* Keep within the current frame, or in frames called by the current |
10468 | one. */ | |
edb3359d | 10469 | |
df631783 | 10470 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
10471 | |
10472 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
10473 | ||
883bc8d1 | 10474 | if (frame_id_p (caller_frame_id)) |
c906108c | 10475 | { |
883bc8d1 | 10476 | struct symtab_and_line sal2; |
cfc31633 | 10477 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
10478 | |
10479 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10480 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 10481 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
10482 | |
10483 | breakpoint_up caller_breakpoint | |
10484 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
10485 | caller_frame_id, bp_until); | |
10486 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 10487 | |
883bc8d1 | 10488 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 10489 | lj_deleter.emplace (thread); |
c906108c | 10490 | } |
c5aa993b | 10491 | |
c70a6932 JK |
10492 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10493 | frame = NULL; | |
10494 | ||
df631783 PA |
10495 | /* If the user told us to continue until a specified location, we |
10496 | don't specify a frame at which we need to stop. Otherwise, | |
10497 | specify the selected frame, because we want to stop only at the | |
10498 | very same frame. */ | |
10499 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
10500 | ||
10501 | for (symtab_and_line &sal : sals) | |
10502 | { | |
10503 | resolve_sal_pc (&sal); | |
10504 | ||
10505 | breakpoint_up location_breakpoint | |
10506 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
10507 | stop_frame_id, bp_until); | |
10508 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
10509 | } | |
883bc8d1 | 10510 | |
573269a8 LS |
10511 | tp->set_thread_fsm |
10512 | (std::unique_ptr<thread_fsm> | |
10513 | (new until_break_fsm (command_interp (), tp->global_num, | |
10514 | std::move (breakpoints)))); | |
f107f563 | 10515 | |
5419bdae TT |
10516 | if (lj_deleter) |
10517 | lj_deleter->release (); | |
f107f563 | 10518 | |
cfc31633 | 10519 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 10520 | } |
ae66c1fc | 10521 | |
c906108c SS |
10522 | \f |
10523 | ||
81b1e71c | 10524 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
10525 | |
10526 | static int | |
81b1e71c | 10527 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 10528 | { |
81b1e71c TT |
10529 | uintptr_t ua = (uintptr_t) a; |
10530 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 10531 | |
81b1e71c | 10532 | if (a->number < b->number) |
8a2c437b | 10533 | return -1; |
81b1e71c | 10534 | else if (a->number > b->number) |
8a2c437b TT |
10535 | return 1; |
10536 | ||
10537 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10538 | the number 0. */ | |
10539 | if (ua < ub) | |
10540 | return -1; | |
94b0e70d | 10541 | return ua > ub ? 1 : 0; |
8a2c437b TT |
10542 | } |
10543 | ||
80f8a6eb | 10544 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10545 | |
10546 | static void | |
0b39b52e | 10547 | clear_command (const char *arg, int from_tty) |
c906108c | 10548 | { |
c906108c | 10549 | int default_match; |
c906108c | 10550 | |
6c5b2ebe PA |
10551 | std::vector<symtab_and_line> decoded_sals; |
10552 | symtab_and_line last_sal; | |
10553 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
10554 | if (arg) |
10555 | { | |
6c5b2ebe PA |
10556 | decoded_sals |
10557 | = decode_line_with_current_source (arg, | |
10558 | (DECODE_LINE_FUNFIRSTLINE | |
10559 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 10560 | default_match = 0; |
6c5b2ebe | 10561 | sals = decoded_sals; |
c906108c SS |
10562 | } |
10563 | else | |
10564 | { | |
1bfeeb0f JL |
10565 | /* Set sal's line, symtab, pc, and pspace to the values |
10566 | corresponding to the last call to print_frame_info. If the | |
10567 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 10568 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 10569 | if (last_sal.symtab == 0) |
8a3fe4f8 | 10570 | error (_("No source file specified.")); |
c906108c | 10571 | |
c906108c | 10572 | default_match = 1; |
6c5b2ebe | 10573 | sals = last_sal; |
c906108c SS |
10574 | } |
10575 | ||
4a64f543 MS |
10576 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10577 | seems, because all existing breakpoints typically have both | |
10578 | file/line and pc set. So, if clear is given file/line, we can | |
10579 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10580 | |
10581 | We only support clearing given the address explicitly | |
10582 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10583 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10584 | due to optimization, all in one block. |
4a64f543 MS |
10585 | |
10586 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10587 | PC corresponding to the same file:line, the breakpoint won't |
10588 | be cleared. We probably can still clear the breakpoint, but | |
10589 | since the other PC value is never presented to user, user | |
10590 | can only find it by guessing, and it does not seem important | |
10591 | to support that. */ | |
10592 | ||
4a64f543 MS |
10593 | /* For each line spec given, delete bps which correspond to it. Do |
10594 | it in two passes, solely to preserve the current behavior that | |
10595 | from_tty is forced true if we delete more than one | |
10596 | breakpoint. */ | |
c906108c | 10597 | |
81b1e71c | 10598 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 10599 | for (const auto &sal : sals) |
c906108c | 10600 | { |
05cba821 JK |
10601 | const char *sal_fullname; |
10602 | ||
c906108c | 10603 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
10604 | If line given (pc == 0), clear all bpts on specified line. |
10605 | If defaulting, clear all bpts on default line | |
10606 | or at default pc. | |
c5aa993b | 10607 | |
dda83cd7 | 10608 | defaulting sal.pc != 0 tests to do |
c5aa993b | 10609 | |
dda83cd7 SM |
10610 | 0 1 pc |
10611 | 1 1 pc _and_ line | |
10612 | 0 0 line | |
10613 | 1 0 <can't happen> */ | |
c906108c | 10614 | |
05cba821 JK |
10615 | sal_fullname = (sal.symtab == NULL |
10616 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 10617 | |
4a64f543 | 10618 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 10619 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 10620 | { |
0d381245 | 10621 | int match = 0; |
4a64f543 | 10622 | /* Are we going to delete b? */ |
a5c69b1e EL |
10623 | if (b->type != bp_none && !is_watchpoint (b) |
10624 | && user_breakpoint_p (b)) | |
0d381245 | 10625 | { |
40cb8ca5 | 10626 | for (bp_location *loc : b->locations ()) |
0d381245 | 10627 | { |
f8eba3c6 TT |
10628 | /* If the user specified file:line, don't allow a PC |
10629 | match. This matches historical gdb behavior. */ | |
10630 | int pc_match = (!sal.explicit_line | |
10631 | && sal.pc | |
10632 | && (loc->pspace == sal.pspace) | |
10633 | && (loc->address == sal.pc) | |
10634 | && (!section_is_overlay (loc->section) | |
10635 | || loc->section == sal.section)); | |
4aac40c8 TT |
10636 | int line_match = 0; |
10637 | ||
10638 | if ((default_match || sal.explicit_line) | |
2f202fde | 10639 | && loc->symtab != NULL |
05cba821 | 10640 | && sal_fullname != NULL |
4aac40c8 | 10641 | && sal.pspace == loc->pspace |
05cba821 JK |
10642 | && loc->line_number == sal.line |
10643 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
10644 | sal_fullname) == 0) | |
10645 | line_match = 1; | |
4aac40c8 | 10646 | |
0d381245 VP |
10647 | if (pc_match || line_match) |
10648 | { | |
10649 | match = 1; | |
10650 | break; | |
10651 | } | |
10652 | } | |
10653 | } | |
10654 | ||
10655 | if (match) | |
81b1e71c | 10656 | found.push_back (b); |
c906108c | 10657 | } |
80f8a6eb | 10658 | } |
8a2c437b | 10659 | |
80f8a6eb | 10660 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 10661 | if (found.empty ()) |
80f8a6eb MS |
10662 | { |
10663 | if (arg) | |
8a3fe4f8 | 10664 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10665 | else |
8a3fe4f8 | 10666 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10667 | } |
c906108c | 10668 | |
8a2c437b | 10669 | /* Remove duplicates from the vec. */ |
81b1e71c | 10670 | std::sort (found.begin (), found.end (), |
b926417a | 10671 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10672 | { |
b926417a | 10673 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
10674 | }); |
10675 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 10676 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10677 | { |
b926417a | 10678 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
10679 | }), |
10680 | found.end ()); | |
8a2c437b | 10681 | |
81b1e71c | 10682 | if (found.size () > 1) |
4a64f543 | 10683 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10684 | if (from_tty) |
a3f17187 | 10685 | { |
81b1e71c | 10686 | if (found.size () == 1) |
6cb06a8c | 10687 | gdb_printf (_("Deleted breakpoint ")); |
a3f17187 | 10688 | else |
6cb06a8c | 10689 | gdb_printf (_("Deleted breakpoints ")); |
a3f17187 | 10690 | } |
d6e956e5 | 10691 | |
81b1e71c | 10692 | for (breakpoint *iter : found) |
80f8a6eb | 10693 | { |
c5aa993b | 10694 | if (from_tty) |
6cb06a8c | 10695 | gdb_printf ("%d ", iter->number); |
81b1e71c | 10696 | delete_breakpoint (iter); |
c906108c | 10697 | } |
80f8a6eb | 10698 | if (from_tty) |
a11ac3b3 | 10699 | gdb_putc ('\n'); |
c906108c SS |
10700 | } |
10701 | \f | |
10702 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10703 | all breakpoints that are marked for deletion, whether hit or not. | |
10704 | This is called after any breakpoint is hit, or after errors. */ | |
10705 | ||
10706 | void | |
313f3b21 | 10707 | breakpoint_auto_delete (bpstat *bs) |
c906108c | 10708 | { |
c906108c | 10709 | for (; bs; bs = bs->next) |
f431efe5 PA |
10710 | if (bs->breakpoint_at |
10711 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10712 | && bs->stop) |
f431efe5 | 10713 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10714 | |
1428b37a | 10715 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 10716 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 10717 | delete_breakpoint (b); |
c906108c SS |
10718 | } |
10719 | ||
4a64f543 | 10720 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 10721 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
10722 | bl_address_is_meaningful says), secondarily by ordering first |
10723 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 10724 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
10725 | |
10726 | static int | |
39ef2f62 | 10727 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 10728 | { |
876fa593 | 10729 | if (a->address != b->address) |
39ef2f62 | 10730 | return a->address < b->address; |
876fa593 | 10731 | |
dea2aa5f LM |
10732 | /* Sort locations at the same address by their pspace number, keeping |
10733 | locations of the same inferior (in a multi-inferior environment) | |
10734 | grouped. */ | |
10735 | ||
10736 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 10737 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 10738 | |
876fa593 | 10739 | /* Sort permanent breakpoints first. */ |
1a853c52 | 10740 | if (a->permanent != b->permanent) |
39ef2f62 | 10741 | return a->permanent > b->permanent; |
876fa593 | 10742 | |
7f32a4d5 PA |
10743 | /* Sort by type in order to make duplicate determination easier. |
10744 | See update_global_location_list. This is kept in sync with | |
10745 | breakpoint_locations_match. */ | |
10746 | if (a->loc_type < b->loc_type) | |
10747 | return true; | |
10748 | ||
10749 | /* Likewise, for range-breakpoints, sort by length. */ | |
10750 | if (a->loc_type == bp_loc_hardware_breakpoint | |
10751 | && b->loc_type == bp_loc_hardware_breakpoint | |
10752 | && a->length < b->length) | |
10753 | return true; | |
10754 | ||
c56a97f9 JK |
10755 | /* Make the internal GDB representation stable across GDB runs |
10756 | where A and B memory inside GDB can differ. Breakpoint locations of | |
10757 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
10758 | |
10759 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 10760 | return a->owner->number < b->owner->number; |
876fa593 | 10761 | |
39ef2f62 | 10762 | return a < b; |
876fa593 JK |
10763 | } |
10764 | ||
f5336ca5 PA |
10765 | /* Set bp_locations_placed_address_before_address_max and |
10766 | bp_locations_shadow_len_after_address_max according to the current | |
10767 | content of the bp_locations array. */ | |
f7545552 TT |
10768 | |
10769 | static void | |
f5336ca5 | 10770 | bp_locations_target_extensions_update (void) |
f7545552 | 10771 | { |
f5336ca5 PA |
10772 | bp_locations_placed_address_before_address_max = 0; |
10773 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 10774 | |
48d7020b | 10775 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
10776 | { |
10777 | CORE_ADDR start, end, addr; | |
10778 | ||
10779 | if (!bp_location_has_shadow (bl)) | |
10780 | continue; | |
10781 | ||
10782 | start = bl->target_info.placed_address; | |
10783 | end = start + bl->target_info.shadow_len; | |
10784 | ||
10785 | gdb_assert (bl->address >= start); | |
10786 | addr = bl->address - start; | |
f5336ca5 PA |
10787 | if (addr > bp_locations_placed_address_before_address_max) |
10788 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
10789 | |
10790 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10791 | ||
10792 | gdb_assert (bl->address < end); | |
10793 | addr = end - bl->address; | |
f5336ca5 PA |
10794 | if (addr > bp_locations_shadow_len_after_address_max) |
10795 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 10796 | } |
f7545552 TT |
10797 | } |
10798 | ||
1e4d1764 YQ |
10799 | /* Download tracepoint locations if they haven't been. */ |
10800 | ||
10801 | static void | |
10802 | download_tracepoint_locations (void) | |
10803 | { | |
dd2e65cc | 10804 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 10805 | |
5ed8105e | 10806 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 10807 | |
f6d17b2b | 10808 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
10809 | { |
10810 | struct tracepoint *t; | |
f2a8bc8a | 10811 | int bp_location_downloaded = 0; |
1e4d1764 | 10812 | |
7ed2c994 | 10813 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
10814 | ? !may_insert_fast_tracepoints |
10815 | : !may_insert_tracepoints)) | |
10816 | continue; | |
10817 | ||
dd2e65cc YQ |
10818 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
10819 | { | |
10820 | if (target_can_download_tracepoint ()) | |
10821 | can_download_tracepoint = TRIBOOL_TRUE; | |
10822 | else | |
10823 | can_download_tracepoint = TRIBOOL_FALSE; | |
10824 | } | |
10825 | ||
10826 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
10827 | break; | |
10828 | ||
40cb8ca5 | 10829 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
10830 | { |
10831 | /* In tracepoint, locations are _never_ duplicated, so | |
10832 | should_be_inserted is equivalent to | |
10833 | unduplicated_should_be_inserted. */ | |
10834 | if (!should_be_inserted (bl) || bl->inserted) | |
10835 | continue; | |
1e4d1764 | 10836 | |
7ed2c994 | 10837 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 10838 | |
7ed2c994 | 10839 | target_download_tracepoint (bl); |
1e4d1764 | 10840 | |
7ed2c994 | 10841 | bl->inserted = 1; |
f2a8bc8a | 10842 | bp_location_downloaded = 1; |
7ed2c994 YQ |
10843 | } |
10844 | t = (struct tracepoint *) b; | |
10845 | t->number_on_target = b->number; | |
f2a8bc8a | 10846 | if (bp_location_downloaded) |
76727919 | 10847 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 10848 | } |
1e4d1764 YQ |
10849 | } |
10850 | ||
934709f0 PW |
10851 | /* Swap the insertion/duplication state between two locations. */ |
10852 | ||
10853 | static void | |
10854 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10855 | { | |
10856 | const int left_inserted = left->inserted; | |
10857 | const int left_duplicate = left->duplicate; | |
b775012e | 10858 | const int left_needs_update = left->needs_update; |
934709f0 PW |
10859 | const struct bp_target_info left_target_info = left->target_info; |
10860 | ||
1e4d1764 YQ |
10861 | /* Locations of tracepoints can never be duplicated. */ |
10862 | if (is_tracepoint (left->owner)) | |
10863 | gdb_assert (!left->duplicate); | |
10864 | if (is_tracepoint (right->owner)) | |
10865 | gdb_assert (!right->duplicate); | |
10866 | ||
934709f0 PW |
10867 | left->inserted = right->inserted; |
10868 | left->duplicate = right->duplicate; | |
b775012e | 10869 | left->needs_update = right->needs_update; |
934709f0 PW |
10870 | left->target_info = right->target_info; |
10871 | right->inserted = left_inserted; | |
10872 | right->duplicate = left_duplicate; | |
b775012e | 10873 | right->needs_update = left_needs_update; |
934709f0 PW |
10874 | right->target_info = left_target_info; |
10875 | } | |
10876 | ||
b775012e LM |
10877 | /* Force the re-insertion of the locations at ADDRESS. This is called |
10878 | once a new/deleted/modified duplicate location is found and we are evaluating | |
10879 | conditions on the target's side. Such conditions need to be updated on | |
10880 | the target. */ | |
10881 | ||
10882 | static void | |
10883 | force_breakpoint_reinsertion (struct bp_location *bl) | |
10884 | { | |
b775012e LM |
10885 | CORE_ADDR address = 0; |
10886 | int pspace_num; | |
10887 | ||
10888 | address = bl->address; | |
10889 | pspace_num = bl->pspace->num; | |
10890 | ||
10891 | /* This is only meaningful if the target is | |
10892 | evaluating conditions and if the user has | |
10893 | opted for condition evaluation on the target's | |
10894 | side. */ | |
10895 | if (gdb_evaluates_breakpoint_condition_p () | |
10896 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
10897 | return; | |
10898 | ||
10899 | /* Flag all breakpoint locations with this address and | |
10900 | the same program space as the location | |
10901 | as "its condition has changed". We need to | |
10902 | update the conditions on the target's side. */ | |
e0d9a270 | 10903 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 10904 | { |
b775012e LM |
10905 | if (!is_breakpoint (loc->owner) |
10906 | || pspace_num != loc->pspace->num) | |
10907 | continue; | |
10908 | ||
10909 | /* Flag the location appropriately. We use a different state to | |
10910 | let everyone know that we already updated the set of locations | |
10911 | with addr bl->address and program space bl->pspace. This is so | |
10912 | we don't have to keep calling these functions just to mark locations | |
10913 | that have already been marked. */ | |
10914 | loc->condition_changed = condition_updated; | |
10915 | ||
10916 | /* Free the agent expression bytecode as well. We will compute | |
10917 | it later on. */ | |
833177a4 | 10918 | loc->cond_bytecode.reset (); |
b775012e LM |
10919 | } |
10920 | } | |
7f32a4d5 | 10921 | |
44702360 PA |
10922 | /* Called whether new breakpoints are created, or existing breakpoints |
10923 | deleted, to update the global location list and recompute which | |
10924 | locations are duplicate of which. | |
b775012e | 10925 | |
04086b45 PA |
10926 | The INSERT_MODE flag determines whether locations may not, may, or |
10927 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
10928 | info. */ | |
b60e7edf | 10929 | |
0d381245 | 10930 | static void |
44702360 | 10931 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 10932 | { |
b775012e LM |
10933 | /* Last breakpoint location address that was marked for update. */ |
10934 | CORE_ADDR last_addr = 0; | |
10935 | /* Last breakpoint location program space that was marked for update. */ | |
10936 | int last_pspace_num = -1; | |
f7545552 | 10937 | |
2d134ed3 PA |
10938 | /* Used in the duplicates detection below. When iterating over all |
10939 | bp_locations, points to the first bp_location of a given address. | |
10940 | Breakpoints and watchpoints of different types are never | |
10941 | duplicates of each other. Keep one pointer for each type of | |
10942 | breakpoint/watchpoint, so we only need to loop over all locations | |
10943 | once. */ | |
10944 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10945 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10946 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10947 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10948 | |
f5336ca5 PA |
10949 | /* Saved former bp_locations array which we compare against the newly |
10950 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
10951 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
10952 | bp_locations.clear (); | |
876fa593 | 10953 | |
43892fdf | 10954 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 10955 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 10956 | bp_locations.push_back (loc); |
7f32a4d5 PA |
10957 | |
10958 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
10959 | breakpoint. Do this before deciding whether locations are | |
10960 | duplicates. Also do this before sorting because sorting order | |
10961 | depends on location type. */ | |
5d51cd5d SM |
10962 | for (bp_location *loc : bp_locations) |
10963 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 10964 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 10965 | |
5d51cd5d | 10966 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 10967 | bp_location_is_less_than); |
876fa593 | 10968 | |
f5336ca5 | 10969 | bp_locations_target_extensions_update (); |
74960c60 | 10970 | |
4a64f543 MS |
10971 | /* Identify bp_location instances that are no longer present in the |
10972 | new list, and therefore should be freed. Note that it's not | |
10973 | necessary that those locations should be removed from inferior -- | |
10974 | if there's another location at the same address (previously | |
10975 | marked as duplicate), we don't need to remove/insert the | |
10976 | location. | |
876fa593 | 10977 | |
4a64f543 MS |
10978 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10979 | and former bp_location array state respectively. */ | |
876fa593 | 10980 | |
5d51cd5d SM |
10981 | size_t loc_i = 0; |
10982 | for (bp_location *old_loc : old_locations) | |
74960c60 | 10983 | { |
e5dd4106 | 10984 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 10985 | not, we have to free it. */ |
c7d46a38 | 10986 | int found_object = 0; |
20874c92 VP |
10987 | /* Tells if the location should remain inserted in the target. */ |
10988 | int keep_in_target = 0; | |
10989 | int removed = 0; | |
876fa593 | 10990 | |
4a64f543 MS |
10991 | /* Skip LOCP entries which will definitely never be needed. |
10992 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
10993 | while (loc_i < bp_locations.size () |
10994 | && bp_locations[loc_i]->address < old_loc->address) | |
10995 | loc_i++; | |
c7d46a38 | 10996 | |
5d51cd5d SM |
10997 | for (size_t loc2_i = loc_i; |
10998 | (loc2_i < bp_locations.size () | |
10999 | && bp_locations[loc2_i]->address == old_loc->address); | |
11000 | loc2_i++) | |
c7d46a38 | 11001 | { |
b775012e LM |
11002 | /* Check if this is a new/duplicated location or a duplicated |
11003 | location that had its condition modified. If so, we want to send | |
11004 | its condition to the target if evaluation of conditions is taking | |
11005 | place there. */ | |
5d51cd5d | 11006 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11007 | && (last_addr != old_loc->address |
11008 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11009 | { |
5d51cd5d | 11010 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11011 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11012 | } |
b775012e | 11013 | |
5d51cd5d | 11014 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11015 | found_object = 1; |
c7d46a38 | 11016 | } |
74960c60 | 11017 | |
b775012e LM |
11018 | /* We have already handled this address, update it so that we don't |
11019 | have to go through updates again. */ | |
11020 | last_addr = old_loc->address; | |
11021 | ||
11022 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11023 | if (!found_object) | |
11024 | force_breakpoint_reinsertion (old_loc); | |
11025 | ||
4a64f543 MS |
11026 | /* If this location is no longer present, and inserted, look if |
11027 | there's maybe a new location at the same address. If so, | |
11028 | mark that one inserted, and don't remove this one. This is | |
11029 | needed so that we don't have a time window where a breakpoint | |
11030 | at certain location is not inserted. */ | |
74960c60 | 11031 | |
876fa593 | 11032 | if (old_loc->inserted) |
0d381245 | 11033 | { |
4a64f543 MS |
11034 | /* If the location is inserted now, we might have to remove |
11035 | it. */ | |
74960c60 | 11036 | |
876fa593 | 11037 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11038 | { |
4a64f543 MS |
11039 | /* The location is still present in the location list, |
11040 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11041 | keep_in_target = 1; |
74960c60 VP |
11042 | } |
11043 | else | |
11044 | { | |
b775012e LM |
11045 | /* This location still exists, but it won't be kept in the |
11046 | target since it may have been disabled. We proceed to | |
11047 | remove its target-side condition. */ | |
11048 | ||
4a64f543 MS |
11049 | /* The location is either no longer present, or got |
11050 | disabled. See if there's another location at the | |
11051 | same address, in which case we don't need to remove | |
11052 | this one from the target. */ | |
876fa593 | 11053 | |
2bdf28a0 | 11054 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11055 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11056 | { |
5d51cd5d SM |
11057 | for (size_t loc2_i = loc_i; |
11058 | (loc2_i < bp_locations.size () | |
11059 | && bp_locations[loc2_i]->address == old_loc->address); | |
11060 | loc2_i++) | |
876fa593 | 11061 | { |
5d51cd5d | 11062 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11063 | |
7f32a4d5 PA |
11064 | if (loc2 == old_loc) |
11065 | continue; | |
11066 | ||
2d134ed3 | 11067 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11068 | { |
85d721b8 PA |
11069 | /* Read watchpoint locations are switched to |
11070 | access watchpoints, if the former are not | |
11071 | supported, but the latter are. */ | |
11072 | if (is_hardware_watchpoint (old_loc->owner)) | |
11073 | { | |
11074 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11075 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11076 | } | |
11077 | ||
934709f0 PW |
11078 | /* loc2 is a duplicated location. We need to check |
11079 | if it should be inserted in case it will be | |
11080 | unduplicated. */ | |
7f32a4d5 | 11081 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11082 | { |
934709f0 | 11083 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11084 | keep_in_target = 1; |
11085 | break; | |
11086 | } | |
876fa593 JK |
11087 | } |
11088 | } | |
11089 | } | |
74960c60 VP |
11090 | } |
11091 | ||
20874c92 VP |
11092 | if (!keep_in_target) |
11093 | { | |
834c0d03 | 11094 | if (remove_breakpoint (old_loc)) |
20874c92 | 11095 | { |
4a64f543 MS |
11096 | /* This is just about all we can do. We could keep |
11097 | this location on the global list, and try to | |
11098 | remove it next time, but there's no particular | |
11099 | reason why we will succeed next time. | |
20874c92 | 11100 | |
4a64f543 MS |
11101 | Note that at this point, old_loc->owner is still |
11102 | valid, as delete_breakpoint frees the breakpoint | |
11103 | only after calling us. */ | |
6cb06a8c TT |
11104 | gdb_printf (_("warning: Error removing " |
11105 | "breakpoint %d\n"), | |
11106 | old_loc->owner->number); | |
20874c92 VP |
11107 | } |
11108 | removed = 1; | |
11109 | } | |
0d381245 | 11110 | } |
74960c60 VP |
11111 | |
11112 | if (!found_object) | |
1c5cfe86 | 11113 | { |
fbea99ea | 11114 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11115 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11116 | { |
db82e815 PA |
11117 | /* This location was removed from the target. In |
11118 | non-stop mode, a race condition is possible where | |
11119 | we've removed a breakpoint, but stop events for that | |
11120 | breakpoint are already queued and will arrive later. | |
11121 | We apply an heuristic to be able to distinguish such | |
11122 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11123 | breakpoint location for a bit, and will retire it | |
11124 | after we see some number of events. The theory here | |
11125 | is that reporting of events should, "on the average", | |
11126 | be fair, so after a while we'll see events from all | |
11127 | threads that have anything of interest, and no longer | |
11128 | need to keep this breakpoint location around. We | |
11129 | don't hold locations forever so to reduce chances of | |
11130 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11131 | SIGTRAP. | |
11132 | ||
11133 | The heuristic failing can be disastrous on | |
11134 | decr_pc_after_break targets. | |
11135 | ||
11136 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11137 | if we fail to recognize a late breakpoint SIGTRAP, | |
11138 | because events_till_retirement has reached 0 too | |
11139 | soon, we'll fail to do the PC adjustment, and report | |
11140 | a random SIGTRAP to the user. When the user resumes | |
11141 | the inferior, it will most likely immediately crash | |
2dec564e | 11142 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11143 | corrupted, because of being resumed e.g., in the |
11144 | middle of a multi-byte instruction, or skipped a | |
11145 | one-byte instruction. This was actually seen happen | |
11146 | on native x86-linux, and should be less rare on | |
11147 | targets that do not support new thread events, like | |
11148 | remote, due to the heuristic depending on | |
11149 | thread_count. | |
11150 | ||
11151 | Mistaking a random SIGTRAP for a breakpoint trap | |
11152 | causes similar symptoms (PC adjustment applied when | |
11153 | it shouldn't), but then again, playing with SIGTRAPs | |
11154 | behind the debugger's back is asking for trouble. | |
11155 | ||
11156 | Since hardware watchpoint traps are always | |
11157 | distinguishable from other traps, so we don't need to | |
11158 | apply keep hardware watchpoint moribund locations | |
11159 | around. We simply always ignore hardware watchpoint | |
11160 | traps we can no longer explain. */ | |
11161 | ||
5b6d1e4f PA |
11162 | process_stratum_target *proc_target = nullptr; |
11163 | for (inferior *inf : all_inferiors ()) | |
11164 | if (inf->pspace == old_loc->pspace) | |
11165 | { | |
11166 | proc_target = inf->process_target (); | |
11167 | break; | |
11168 | } | |
11169 | if (proc_target != nullptr) | |
11170 | old_loc->events_till_retirement | |
11171 | = 3 * (thread_count (proc_target) + 1); | |
11172 | else | |
11173 | old_loc->events_till_retirement = 1; | |
876fa593 | 11174 | old_loc->owner = NULL; |
20874c92 | 11175 | |
1123588c | 11176 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11177 | } |
11178 | else | |
f431efe5 PA |
11179 | { |
11180 | old_loc->owner = NULL; | |
11181 | decref_bp_location (&old_loc); | |
11182 | } | |
20874c92 | 11183 | } |
74960c60 | 11184 | } |
1c5cfe86 | 11185 | |
348d480f PA |
11186 | /* Rescan breakpoints at the same address and section, marking the |
11187 | first one as "first" and any others as "duplicates". This is so | |
11188 | that the bpt instruction is only inserted once. If we have a | |
11189 | permanent breakpoint at the same place as BPT, make that one the | |
11190 | official one, and the rest as duplicates. Permanent breakpoints | |
11191 | are sorted first for the same address. | |
11192 | ||
11193 | Do the same for hardware watchpoints, but also considering the | |
11194 | watchpoint's type (regular/access/read) and length. */ | |
11195 | ||
11196 | bp_loc_first = NULL; | |
11197 | wp_loc_first = NULL; | |
11198 | awp_loc_first = NULL; | |
11199 | rwp_loc_first = NULL; | |
40cb8ca5 | 11200 | |
48d7020b | 11201 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
11202 | { |
11203 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11204 | non-NULL. */ | |
348d480f | 11205 | struct bp_location **loc_first_p; |
43892fdf | 11206 | breakpoint *b = loc->owner; |
348d480f | 11207 | |
6f380991 | 11208 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11209 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11210 | /* Don't detect duplicate for tracepoint locations because they are |
11211 | never duplicated. See the comments in field `duplicate' of | |
11212 | `struct bp_location'. */ | |
348d480f | 11213 | || is_tracepoint (b)) |
b775012e LM |
11214 | { |
11215 | /* Clear the condition modification flag. */ | |
11216 | loc->condition_changed = condition_unchanged; | |
11217 | continue; | |
11218 | } | |
348d480f | 11219 | |
348d480f PA |
11220 | if (b->type == bp_hardware_watchpoint) |
11221 | loc_first_p = &wp_loc_first; | |
11222 | else if (b->type == bp_read_watchpoint) | |
11223 | loc_first_p = &rwp_loc_first; | |
11224 | else if (b->type == bp_access_watchpoint) | |
11225 | loc_first_p = &awp_loc_first; | |
11226 | else | |
11227 | loc_first_p = &bp_loc_first; | |
11228 | ||
11229 | if (*loc_first_p == NULL | |
11230 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11231 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11232 | { | |
11233 | *loc_first_p = loc; | |
11234 | loc->duplicate = 0; | |
b775012e LM |
11235 | |
11236 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11237 | { | |
11238 | loc->needs_update = 1; | |
11239 | /* Clear the condition modification flag. */ | |
11240 | loc->condition_changed = condition_unchanged; | |
11241 | } | |
348d480f PA |
11242 | continue; |
11243 | } | |
11244 | ||
934709f0 PW |
11245 | |
11246 | /* This and the above ensure the invariant that the first location | |
11247 | is not duplicated, and is the inserted one. | |
11248 | All following are marked as duplicated, and are not inserted. */ | |
11249 | if (loc->inserted) | |
11250 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11251 | loc->duplicate = 1; |
11252 | ||
b775012e LM |
11253 | /* Clear the condition modification flag. */ |
11254 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11255 | } |
11256 | ||
a25a5a45 | 11257 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11258 | { |
04086b45 | 11259 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11260 | insert_breakpoint_locations (); |
11261 | else | |
11262 | { | |
44702360 PA |
11263 | /* Even though the caller told us to not insert new |
11264 | locations, we may still need to update conditions on the | |
11265 | target's side of breakpoints that were already inserted | |
11266 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11267 | only update conditions for locations that are marked |
11268 | "needs_update". */ | |
11269 | update_inserted_breakpoint_locations (); | |
11270 | } | |
11271 | } | |
348d480f | 11272 | |
04086b45 | 11273 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11274 | download_tracepoint_locations (); |
348d480f PA |
11275 | } |
11276 | ||
11277 | void | |
11278 | breakpoint_retire_moribund (void) | |
11279 | { | |
1123588c TT |
11280 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11281 | { | |
11282 | struct bp_location *loc = moribund_locations[ix]; | |
11283 | if (--(loc->events_till_retirement) == 0) | |
11284 | { | |
11285 | decref_bp_location (&loc); | |
11286 | unordered_remove (moribund_locations, ix); | |
11287 | --ix; | |
11288 | } | |
11289 | } | |
348d480f PA |
11290 | } |
11291 | ||
11292 | static void | |
44702360 | 11293 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11294 | { |
348d480f | 11295 | |
a70b8144 | 11296 | try |
492d29ea PA |
11297 | { |
11298 | update_global_location_list (insert_mode); | |
11299 | } | |
230d2906 | 11300 | catch (const gdb_exception_error &e) |
492d29ea PA |
11301 | { |
11302 | } | |
348d480f PA |
11303 | } |
11304 | ||
11305 | /* Clear BKP from a BPS. */ | |
11306 | ||
11307 | static void | |
313f3b21 | 11308 | bpstat_remove_bp_location (bpstat *bps, struct breakpoint *bpt) |
348d480f | 11309 | { |
313f3b21 | 11310 | bpstat *bs; |
348d480f PA |
11311 | |
11312 | for (bs = bps; bs; bs = bs->next) | |
11313 | if (bs->breakpoint_at == bpt) | |
11314 | { | |
11315 | bs->breakpoint_at = NULL; | |
11316 | bs->old_val = NULL; | |
11317 | /* bs->commands will be freed later. */ | |
11318 | } | |
11319 | } | |
11320 | ||
11321 | /* Callback for iterate_over_threads. */ | |
11322 | static int | |
11323 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
11324 | { | |
9a3c8263 | 11325 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
11326 | |
11327 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
11328 | return 0; | |
11329 | } | |
11330 | ||
c47614fe | 11331 | /* Helper for breakpoint and tracepoint breakpoint->mention |
348d480f PA |
11332 | callbacks. */ |
11333 | ||
11334 | static void | |
b713485d | 11335 | say_where (const breakpoint *b) |
348d480f PA |
11336 | { |
11337 | struct value_print_options opts; | |
11338 | ||
11339 | get_user_print_options (&opts); | |
11340 | ||
11341 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
11342 | single string. */ | |
11343 | if (b->loc == NULL) | |
11344 | { | |
f00aae0f KS |
11345 | /* For pending locations, the output differs slightly based |
11346 | on b->extra_string. If this is non-NULL, it contains either | |
11347 | a condition or dprintf arguments. */ | |
11348 | if (b->extra_string == NULL) | |
11349 | { | |
6cb06a8c TT |
11350 | gdb_printf (_(" (%s) pending."), |
11351 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
11352 | } |
11353 | else if (b->type == bp_dprintf) | |
11354 | { | |
6cb06a8c TT |
11355 | gdb_printf (_(" (%s,%s) pending."), |
11356 | event_location_to_string (b->location.get ()), | |
11357 | b->extra_string.get ()); | |
f00aae0f KS |
11358 | } |
11359 | else | |
11360 | { | |
6cb06a8c TT |
11361 | gdb_printf (_(" (%s %s) pending."), |
11362 | event_location_to_string (b->location.get ()), | |
11363 | b->extra_string.get ()); | |
f00aae0f | 11364 | } |
348d480f PA |
11365 | } |
11366 | else | |
11367 | { | |
2f202fde | 11368 | if (opts.addressprint || b->loc->symtab == NULL) |
6cb06a8c TT |
11369 | gdb_printf (" at %ps", |
11370 | styled_string (address_style.style (), | |
11371 | paddress (b->loc->gdbarch, | |
11372 | b->loc->address))); | |
2f202fde | 11373 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
11374 | { |
11375 | /* If there is a single location, we can print the location | |
11376 | more nicely. */ | |
11377 | if (b->loc->next == NULL) | |
0bb296cb | 11378 | { |
6a831f06 PA |
11379 | const char *filename |
11380 | = symtab_to_filename_for_display (b->loc->symtab); | |
6cb06a8c TT |
11381 | gdb_printf (": file %ps, line %d.", |
11382 | styled_string (file_name_style.style (), | |
11383 | filename), | |
11384 | b->loc->line_number); | |
0bb296cb | 11385 | } |
f8eba3c6 TT |
11386 | else |
11387 | /* This is not ideal, but each location may have a | |
11388 | different file name, and this at least reflects the | |
11389 | real situation somewhat. */ | |
6cb06a8c TT |
11390 | gdb_printf (": %s.", |
11391 | event_location_to_string (b->location.get ())); | |
f8eba3c6 | 11392 | } |
348d480f PA |
11393 | |
11394 | if (b->loc->next) | |
11395 | { | |
11396 | struct bp_location *loc = b->loc; | |
11397 | int n = 0; | |
11398 | for (; loc; loc = loc->next) | |
11399 | ++n; | |
6cb06a8c | 11400 | gdb_printf (" (%d locations)", n); |
348d480f PA |
11401 | } |
11402 | } | |
11403 | } | |
11404 | ||
40cb8ca5 SM |
11405 | /* See breakpoint.h. */ |
11406 | ||
a67bcaba | 11407 | bp_location_range breakpoint::locations () const |
40cb8ca5 | 11408 | { |
9be25986 | 11409 | return bp_location_range (this->loc); |
40cb8ca5 SM |
11410 | } |
11411 | ||
4c6a92b1 TT |
11412 | struct bp_location * |
11413 | breakpoint::allocate_location () | |
11414 | { | |
11415 | return new bp_location (this); | |
11416 | } | |
11417 | ||
2060206e PA |
11418 | #define internal_error_pure_virtual_called() \ |
11419 | gdb_assert_not_reached ("pure virtual function called") | |
11420 | ||
4c6a92b1 TT |
11421 | int |
11422 | breakpoint::insert_location (struct bp_location *bl) | |
11423 | { | |
11424 | internal_error_pure_virtual_called (); | |
11425 | } | |
11426 | ||
4c6a92b1 TT |
11427 | int |
11428 | breakpoint::remove_location (struct bp_location *bl, | |
11429 | enum remove_bp_reason reason) | |
11430 | { | |
11431 | internal_error_pure_virtual_called (); | |
11432 | } | |
11433 | ||
4c6a92b1 TT |
11434 | int |
11435 | breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11436 | const address_space *aspace, | |
11437 | CORE_ADDR bp_addr, | |
11438 | const target_waitstatus &ws) | |
11439 | { | |
11440 | internal_error_pure_virtual_called (); | |
11441 | } | |
11442 | ||
4c6a92b1 TT |
11443 | int |
11444 | breakpoint::resources_needed (const struct bp_location *bl) | |
11445 | { | |
11446 | internal_error_pure_virtual_called (); | |
11447 | } | |
11448 | ||
4c6a92b1 | 11449 | enum print_stop_action |
7bd86313 | 11450 | breakpoint::print_it (const bpstat *bs) const |
4c6a92b1 TT |
11451 | { |
11452 | internal_error_pure_virtual_called (); | |
11453 | } | |
11454 | ||
4c6a92b1 | 11455 | void |
b713485d | 11456 | breakpoint::print_mention () const |
4c6a92b1 TT |
11457 | { |
11458 | internal_error_pure_virtual_called (); | |
11459 | } | |
11460 | ||
4c6a92b1 | 11461 | void |
4d1ae558 | 11462 | breakpoint::print_recreate (struct ui_file *fp) const |
4c6a92b1 TT |
11463 | { |
11464 | internal_error_pure_virtual_called (); | |
11465 | } | |
11466 | ||
4c6a92b1 TT |
11467 | std::vector<symtab_and_line> |
11468 | breakpoint::decode_location (struct event_location *location, | |
11469 | struct program_space *search_pspace) | |
11470 | { | |
11471 | internal_error_pure_virtual_called (); | |
11472 | } | |
11473 | ||
2060206e PA |
11474 | /* Default breakpoint_ops methods. */ |
11475 | ||
2b5ab5b8 TT |
11476 | void |
11477 | base_breakpoint::re_set () | |
348d480f | 11478 | { |
06edf0c0 | 11479 | /* FIXME: is this still reachable? */ |
2b5ab5b8 | 11480 | if (breakpoint_event_location_empty_p (this)) |
06edf0c0 | 11481 | { |
f00aae0f | 11482 | /* Anything without a location can't be re-set. */ |
2b5ab5b8 | 11483 | delete_breakpoint (this); |
06edf0c0 | 11484 | return; |
348d480f | 11485 | } |
06edf0c0 | 11486 | |
2b5ab5b8 | 11487 | breakpoint_re_set_default (this); |
348d480f PA |
11488 | } |
11489 | ||
2b5ab5b8 TT |
11490 | int |
11491 | base_breakpoint::insert_location (struct bp_location *bl) | |
348d480f | 11492 | { |
cd6c3b4f YQ |
11493 | CORE_ADDR addr = bl->target_info.reqstd_address; |
11494 | ||
579c6ad9 | 11495 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
11496 | bl->target_info.placed_address = addr; |
11497 | ||
5d926615 | 11498 | int result; |
348d480f | 11499 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
5d926615 | 11500 | result = target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 11501 | else |
5d926615 TT |
11502 | result = target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
11503 | ||
11504 | if (result == 0 && bl->probe.prob != nullptr) | |
11505 | { | |
11506 | /* The insertion was successful, now let's set the probe's semaphore | |
11507 | if needed. */ | |
11508 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); | |
11509 | } | |
11510 | ||
11511 | return result; | |
348d480f PA |
11512 | } |
11513 | ||
2b5ab5b8 TT |
11514 | int |
11515 | base_breakpoint::remove_location (struct bp_location *bl, | |
11516 | enum remove_bp_reason reason) | |
348d480f | 11517 | { |
5d926615 TT |
11518 | if (bl->probe.prob != nullptr) |
11519 | { | |
11520 | /* Let's clear the semaphore before removing the location. */ | |
11521 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); | |
11522 | } | |
11523 | ||
348d480f PA |
11524 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
11525 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11526 | else | |
73971819 | 11527 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
11528 | } |
11529 | ||
2b5ab5b8 TT |
11530 | int |
11531 | base_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11532 | const address_space *aspace, | |
11533 | CORE_ADDR bp_addr, | |
11534 | const target_waitstatus &ws) | |
348d480f | 11535 | { |
c272a98c SM |
11536 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
11537 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
11538 | return 0; |
11539 | ||
348d480f PA |
11540 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
11541 | aspace, bp_addr)) | |
11542 | return 0; | |
11543 | ||
11544 | if (overlay_debugging /* unmapped overlay section */ | |
11545 | && section_is_overlay (bl->section) | |
11546 | && !section_is_mapped (bl->section)) | |
11547 | return 0; | |
11548 | ||
11549 | return 1; | |
11550 | } | |
11551 | ||
f293a0b5 TT |
11552 | int |
11553 | dprintf_breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11554 | const address_space *aspace, | |
11555 | CORE_ADDR bp_addr, | |
11556 | const target_waitstatus &ws) | |
cd1608cc PA |
11557 | { |
11558 | if (dprintf_style == dprintf_style_agent | |
11559 | && target_can_run_breakpoint_commands ()) | |
11560 | { | |
11561 | /* An agent-style dprintf never causes a stop. If we see a trap | |
11562 | for this address it must be for a breakpoint that happens to | |
11563 | be set at the same address. */ | |
11564 | return 0; | |
11565 | } | |
11566 | ||
f293a0b5 | 11567 | return this->ordinary_breakpoint::breakpoint_hit (bl, aspace, bp_addr, ws); |
cd1608cc PA |
11568 | } |
11569 | ||
7dd8e7ae TT |
11570 | int |
11571 | ordinary_breakpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 11572 | { |
7dd8e7ae | 11573 | gdb_assert (type == bp_hardware_breakpoint); |
348d480f PA |
11574 | |
11575 | return 1; | |
11576 | } | |
11577 | ||
7dd8e7ae | 11578 | enum print_stop_action |
7bd86313 | 11579 | ordinary_breakpoint::print_it (const bpstat *bs) const |
348d480f | 11580 | { |
348d480f | 11581 | const struct bp_location *bl; |
001c8c33 | 11582 | int bp_temp; |
79a45e25 | 11583 | struct ui_out *uiout = current_uiout; |
348d480f | 11584 | |
b6433ede | 11585 | bl = bs->bp_location_at.get (); |
348d480f | 11586 | |
7dd8e7ae | 11587 | bp_temp = disposition == disp_del; |
001c8c33 PA |
11588 | if (bl->address != bl->requested_address) |
11589 | breakpoint_adjustment_warning (bl->requested_address, | |
11590 | bl->address, | |
7dd8e7ae TT |
11591 | number, 1); |
11592 | annotate_breakpoint (number); | |
f303dbd6 PA |
11593 | maybe_print_thread_hit_breakpoint (uiout); |
11594 | ||
112e8700 | 11595 | if (uiout->is_mi_like_p ()) |
348d480f | 11596 | { |
112e8700 | 11597 | uiout->field_string ("reason", |
001c8c33 | 11598 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
7dd8e7ae | 11599 | uiout->field_string ("disp", bpdisp_text (disposition)); |
06edf0c0 | 11600 | } |
6a831f06 PA |
11601 | if (bp_temp) |
11602 | uiout->message ("Temporary breakpoint %pF, ", | |
7dd8e7ae | 11603 | signed_field ("bkptno", number)); |
6a831f06 PA |
11604 | else |
11605 | uiout->message ("Breakpoint %pF, ", | |
7dd8e7ae | 11606 | signed_field ("bkptno", number)); |
06edf0c0 | 11607 | |
001c8c33 | 11608 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11609 | } |
11610 | ||
7dd8e7ae | 11611 | void |
b713485d | 11612 | ordinary_breakpoint::print_mention () const |
06edf0c0 | 11613 | { |
112e8700 | 11614 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
11615 | return; |
11616 | ||
7dd8e7ae | 11617 | switch (type) |
06edf0c0 PA |
11618 | { |
11619 | case bp_breakpoint: | |
11620 | case bp_gnu_ifunc_resolver: | |
7dd8e7ae | 11621 | if (disposition == disp_del) |
6cb06a8c | 11622 | gdb_printf (_("Temporary breakpoint")); |
06edf0c0 | 11623 | else |
6cb06a8c | 11624 | gdb_printf (_("Breakpoint")); |
7dd8e7ae TT |
11625 | gdb_printf (_(" %d"), number); |
11626 | if (type == bp_gnu_ifunc_resolver) | |
6cb06a8c | 11627 | gdb_printf (_(" at gnu-indirect-function resolver")); |
06edf0c0 PA |
11628 | break; |
11629 | case bp_hardware_breakpoint: | |
7dd8e7ae | 11630 | gdb_printf (_("Hardware assisted breakpoint %d"), number); |
06edf0c0 | 11631 | break; |
e7e0cddf | 11632 | case bp_dprintf: |
7dd8e7ae | 11633 | gdb_printf (_("Dprintf %d"), number); |
e7e0cddf | 11634 | break; |
06edf0c0 PA |
11635 | } |
11636 | ||
7dd8e7ae | 11637 | say_where (this); |
06edf0c0 PA |
11638 | } |
11639 | ||
7dd8e7ae | 11640 | void |
4d1ae558 | 11641 | ordinary_breakpoint::print_recreate (struct ui_file *fp) const |
06edf0c0 | 11642 | { |
7dd8e7ae | 11643 | if (type == bp_breakpoint && disposition == disp_del) |
6cb06a8c | 11644 | gdb_printf (fp, "tbreak"); |
7dd8e7ae | 11645 | else if (type == bp_breakpoint) |
6cb06a8c | 11646 | gdb_printf (fp, "break"); |
7dd8e7ae TT |
11647 | else if (type == bp_hardware_breakpoint |
11648 | && disposition == disp_del) | |
6cb06a8c | 11649 | gdb_printf (fp, "thbreak"); |
7dd8e7ae | 11650 | else if (type == bp_hardware_breakpoint) |
6cb06a8c | 11651 | gdb_printf (fp, "hbreak"); |
06edf0c0 PA |
11652 | else |
11653 | internal_error (__FILE__, __LINE__, | |
7dd8e7ae | 11654 | _("unhandled breakpoint type %d"), (int) type); |
06edf0c0 | 11655 | |
7dd8e7ae | 11656 | gdb_printf (fp, " %s", event_location_to_string (location.get ())); |
f00aae0f KS |
11657 | |
11658 | /* Print out extra_string if this breakpoint is pending. It might | |
11659 | contain, for example, conditions that were set by the user. */ | |
7dd8e7ae TT |
11660 | if (loc == NULL && extra_string != NULL) |
11661 | gdb_printf (fp, " %s", extra_string.get ()); | |
f00aae0f | 11662 | |
04d0163c | 11663 | print_recreate_thread (fp); |
06edf0c0 PA |
11664 | } |
11665 | ||
2b5ab5b8 TT |
11666 | std::vector<symtab_and_line> |
11667 | base_breakpoint::decode_location (struct event_location *location, | |
11668 | struct program_space *search_pspace) | |
983af33b | 11669 | { |
5d926615 TT |
11670 | if (event_location_type (location) == PROBE_LOCATION) |
11671 | return bkpt_probe_decode_location (this, location, search_pspace); | |
11672 | ||
2b5ab5b8 | 11673 | return decode_location_default (this, location, search_pspace); |
983af33b SDJ |
11674 | } |
11675 | ||
06edf0c0 PA |
11676 | /* Virtual table for internal breakpoints. */ |
11677 | ||
c359fff5 TT |
11678 | void |
11679 | internal_breakpoint::re_set () | |
06edf0c0 | 11680 | { |
c359fff5 | 11681 | switch (type) |
06edf0c0 PA |
11682 | { |
11683 | /* Delete overlay event and longjmp master breakpoints; they | |
11684 | will be reset later by breakpoint_re_set. */ | |
11685 | case bp_overlay_event: | |
11686 | case bp_longjmp_master: | |
11687 | case bp_std_terminate_master: | |
11688 | case bp_exception_master: | |
c359fff5 | 11689 | delete_breakpoint (this); |
06edf0c0 PA |
11690 | break; |
11691 | ||
11692 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 11693 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
11694 | case bp_shlib_event: |
11695 | ||
11696 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11697 | it is set up, we do not want to touch it. */ | |
11698 | case bp_thread_event: | |
11699 | break; | |
11700 | } | |
11701 | } | |
11702 | ||
c359fff5 TT |
11703 | void |
11704 | internal_breakpoint::check_status (bpstat *bs) | |
06edf0c0 | 11705 | { |
c359fff5 | 11706 | if (type == bp_shlib_event) |
a9b3a50f PA |
11707 | { |
11708 | /* If requested, stop when the dynamic linker notifies GDB of | |
11709 | events. This allows the user to get control and place | |
11710 | breakpoints in initializer routines for dynamically loaded | |
11711 | objects (among other things). */ | |
11712 | bs->stop = stop_on_solib_events; | |
11713 | bs->print = stop_on_solib_events; | |
11714 | } | |
11715 | else | |
11716 | bs->stop = 0; | |
06edf0c0 PA |
11717 | } |
11718 | ||
c359fff5 | 11719 | enum print_stop_action |
7bd86313 | 11720 | internal_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11721 | { |
c359fff5 | 11722 | switch (type) |
06edf0c0 | 11723 | { |
348d480f PA |
11724 | case bp_shlib_event: |
11725 | /* Did we stop because the user set the stop_on_solib_events | |
11726 | variable? (If so, we report this as a generic, "Stopped due | |
11727 | to shlib event" message.) */ | |
4e9e993a | 11728 | print_solib_event (false); |
348d480f PA |
11729 | break; |
11730 | ||
11731 | case bp_thread_event: | |
11732 | /* Not sure how we will get here. | |
11733 | GDB should not stop for these breakpoints. */ | |
6cb06a8c | 11734 | gdb_printf (_("Thread Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11735 | break; |
11736 | ||
11737 | case bp_overlay_event: | |
11738 | /* By analogy with the thread event, GDB should not stop for these. */ | |
6cb06a8c | 11739 | gdb_printf (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11740 | break; |
11741 | ||
11742 | case bp_longjmp_master: | |
11743 | /* These should never be enabled. */ | |
6cb06a8c | 11744 | gdb_printf (_("Longjmp Master Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11745 | break; |
11746 | ||
11747 | case bp_std_terminate_master: | |
11748 | /* These should never be enabled. */ | |
6cb06a8c TT |
11749 | gdb_printf (_("std::terminate Master Breakpoint: " |
11750 | "gdb should not stop!\n")); | |
348d480f PA |
11751 | break; |
11752 | ||
11753 | case bp_exception_master: | |
11754 | /* These should never be enabled. */ | |
6cb06a8c TT |
11755 | gdb_printf (_("Exception Master Breakpoint: " |
11756 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11757 | break; |
11758 | } | |
11759 | ||
001c8c33 | 11760 | return PRINT_NOTHING; |
06edf0c0 PA |
11761 | } |
11762 | ||
c359fff5 | 11763 | void |
b713485d | 11764 | internal_breakpoint::print_mention () const |
06edf0c0 PA |
11765 | { |
11766 | /* Nothing to mention. These breakpoints are internal. */ | |
11767 | } | |
11768 | ||
06edf0c0 PA |
11769 | /* Virtual table for momentary breakpoints */ |
11770 | ||
1fd30a47 TT |
11771 | void |
11772 | momentary_breakpoint::re_set () | |
06edf0c0 PA |
11773 | { |
11774 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 11775 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
11776 | Otherwise these should have been blown away via the cleanup chain |
11777 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11778 | } | |
11779 | ||
1fd30a47 TT |
11780 | void |
11781 | momentary_breakpoint::check_status (bpstat *bs) | |
06edf0c0 PA |
11782 | { |
11783 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11784 | } | |
11785 | ||
1fd30a47 | 11786 | enum print_stop_action |
7bd86313 | 11787 | momentary_breakpoint::print_it (const bpstat *bs) const |
06edf0c0 | 11788 | { |
001c8c33 | 11789 | return PRINT_UNKNOWN; |
348d480f PA |
11790 | } |
11791 | ||
1fd30a47 | 11792 | void |
b713485d | 11793 | momentary_breakpoint::print_mention () const |
348d480f | 11794 | { |
06edf0c0 | 11795 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11796 | } |
11797 | ||
e2e4d78b JK |
11798 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
11799 | ||
11800 | It gets cleared already on the removal of the first one of such placed | |
11801 | breakpoints. This is OK as they get all removed altogether. */ | |
11802 | ||
c1fc2657 | 11803 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 11804 | { |
c1fc2657 | 11805 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 11806 | |
c1fc2657 | 11807 | if (tp != NULL) |
e2e4d78b | 11808 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
11809 | } |
11810 | ||
55aa24fb | 11811 | static void |
626d2320 | 11812 | bkpt_probe_create_sals_from_location (struct event_location *location, |
03ada39e SM |
11813 | struct linespec_result *canonical) |
11814 | ||
55aa24fb SDJ |
11815 | { |
11816 | struct linespec_sals lsal; | |
11817 | ||
c2f4122d | 11818 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
11819 | lsal.canonical |
11820 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 11821 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
11822 | } |
11823 | ||
6c5b2ebe | 11824 | static std::vector<symtab_and_line> |
f00aae0f | 11825 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 11826 | struct event_location *location, |
6c5b2ebe | 11827 | struct program_space *search_pspace) |
55aa24fb | 11828 | { |
6c5b2ebe PA |
11829 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
11830 | if (sals.empty ()) | |
55aa24fb | 11831 | error (_("probe not found")); |
6c5b2ebe | 11832 | return sals; |
55aa24fb SDJ |
11833 | } |
11834 | ||
779dcceb TT |
11835 | int |
11836 | tracepoint::breakpoint_hit (const struct bp_location *bl, | |
11837 | const address_space *aspace, CORE_ADDR bp_addr, | |
11838 | const target_waitstatus &ws) | |
348d480f PA |
11839 | { |
11840 | /* By definition, the inferior does not report stops at | |
11841 | tracepoints. */ | |
11842 | return 0; | |
74960c60 VP |
11843 | } |
11844 | ||
779dcceb TT |
11845 | void |
11846 | tracepoint::print_one_detail (struct ui_out *uiout) const | |
74960c60 | 11847 | { |
779dcceb | 11848 | if (!static_trace_marker_id.empty ()) |
348d480f | 11849 | { |
7b572efb TT |
11850 | gdb_assert (type == bp_static_tracepoint |
11851 | || type == bp_static_marker_tracepoint); | |
cc59ec59 | 11852 | |
6a831f06 PA |
11853 | uiout->message ("\tmarker id is %pF\n", |
11854 | string_field ("static-tracepoint-marker-string-id", | |
779dcceb | 11855 | static_trace_marker_id.c_str ())); |
348d480f | 11856 | } |
0d381245 VP |
11857 | } |
11858 | ||
779dcceb | 11859 | void |
b713485d | 11860 | tracepoint::print_mention () const |
a474d7c2 | 11861 | { |
112e8700 | 11862 | if (current_uiout->is_mi_like_p ()) |
348d480f | 11863 | return; |
cc59ec59 | 11864 | |
779dcceb | 11865 | switch (type) |
348d480f PA |
11866 | { |
11867 | case bp_tracepoint: | |
6cb06a8c | 11868 | gdb_printf (_("Tracepoint")); |
779dcceb | 11869 | gdb_printf (_(" %d"), number); |
348d480f PA |
11870 | break; |
11871 | case bp_fast_tracepoint: | |
6cb06a8c | 11872 | gdb_printf (_("Fast tracepoint")); |
779dcceb | 11873 | gdb_printf (_(" %d"), number); |
348d480f PA |
11874 | break; |
11875 | case bp_static_tracepoint: | |
7b572efb | 11876 | case bp_static_marker_tracepoint: |
6cb06a8c | 11877 | gdb_printf (_("Static tracepoint")); |
779dcceb | 11878 | gdb_printf (_(" %d"), number); |
348d480f PA |
11879 | break; |
11880 | default: | |
11881 | internal_error (__FILE__, __LINE__, | |
779dcceb | 11882 | _("unhandled tracepoint type %d"), (int) type); |
348d480f PA |
11883 | } |
11884 | ||
779dcceb | 11885 | say_where (this); |
a474d7c2 PA |
11886 | } |
11887 | ||
779dcceb | 11888 | void |
4d1ae558 | 11889 | tracepoint::print_recreate (struct ui_file *fp) const |
a474d7c2 | 11890 | { |
779dcceb | 11891 | if (type == bp_fast_tracepoint) |
6cb06a8c | 11892 | gdb_printf (fp, "ftrace"); |
7b572efb TT |
11893 | else if (type == bp_static_tracepoint |
11894 | || type == bp_static_marker_tracepoint) | |
6cb06a8c | 11895 | gdb_printf (fp, "strace"); |
779dcceb | 11896 | else if (type == bp_tracepoint) |
6cb06a8c | 11897 | gdb_printf (fp, "trace"); |
348d480f PA |
11898 | else |
11899 | internal_error (__FILE__, __LINE__, | |
779dcceb | 11900 | _("unhandled tracepoint type %d"), (int) type); |
cc59ec59 | 11901 | |
779dcceb | 11902 | gdb_printf (fp, " %s", event_location_to_string (location.get ())); |
04d0163c | 11903 | print_recreate_thread (fp); |
d9b3f62e | 11904 | |
779dcceb TT |
11905 | if (pass_count) |
11906 | gdb_printf (fp, " passcount %d\n", pass_count); | |
a474d7c2 PA |
11907 | } |
11908 | ||
bac7c5cf | 11909 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
11910 | |
11911 | static void | |
f00aae0f | 11912 | tracepoint_probe_create_sals_from_location |
626d2320 | 11913 | (struct event_location *location, |
03ada39e | 11914 | struct linespec_result *canonical) |
55aa24fb SDJ |
11915 | { |
11916 | /* We use the same method for breakpoint on probes. */ | |
03ada39e | 11917 | bkpt_probe_create_sals_from_location (location, canonical); |
55aa24fb SDJ |
11918 | } |
11919 | ||
f293a0b5 TT |
11920 | void |
11921 | dprintf_breakpoint::re_set () | |
5c2b4418 | 11922 | { |
f293a0b5 | 11923 | breakpoint_re_set_default (this); |
5c2b4418 | 11924 | |
f00aae0f | 11925 | /* extra_string should never be non-NULL for dprintf. */ |
f293a0b5 | 11926 | gdb_assert (extra_string != NULL); |
5c2b4418 HZ |
11927 | |
11928 | /* 1 - connect to target 1, that can run breakpoint commands. | |
11929 | 2 - create a dprintf, which resolves fine. | |
11930 | 3 - disconnect from target 1 | |
11931 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
11932 | ||
11933 | After steps #3/#4, you'll want the dprintf command list to | |
11934 | be updated, because target 1 and 2 may well return different | |
11935 | answers for target_can_run_breakpoint_commands(). | |
11936 | Given absence of finer grained resetting, we get to do | |
11937 | it all the time. */ | |
f293a0b5 TT |
11938 | if (extra_string != NULL) |
11939 | update_dprintf_command_list (this); | |
5c2b4418 HZ |
11940 | } |
11941 | ||
f293a0b5 | 11942 | /* Implement the "print_recreate" method for dprintf. */ |
2d9442cc | 11943 | |
f293a0b5 | 11944 | void |
4d1ae558 | 11945 | dprintf_breakpoint::print_recreate (struct ui_file *fp) const |
2d9442cc | 11946 | { |
6cb06a8c | 11947 | gdb_printf (fp, "dprintf %s,%s", |
f293a0b5 TT |
11948 | event_location_to_string (location.get ()), |
11949 | extra_string.get ()); | |
04d0163c | 11950 | print_recreate_thread (fp); |
2d9442cc HZ |
11951 | } |
11952 | ||
f293a0b5 | 11953 | /* Implement the "after_condition_true" method for dprintf. |
9d6e6e84 HZ |
11954 | |
11955 | dprintf's are implemented with regular commands in their command | |
11956 | list, but we run the commands here instead of before presenting the | |
11957 | stop to the user, as dprintf's don't actually cause a stop. This | |
11958 | also makes it so that the commands of multiple dprintfs at the same | |
11959 | address are all handled. */ | |
11960 | ||
f293a0b5 TT |
11961 | void |
11962 | dprintf_breakpoint::after_condition_true (struct bpstat *bs) | |
9d6e6e84 | 11963 | { |
9d6e6e84 HZ |
11964 | /* dprintf's never cause a stop. This wasn't set in the |
11965 | check_status hook instead because that would make the dprintf's | |
11966 | condition not be evaluated. */ | |
11967 | bs->stop = 0; | |
11968 | ||
11969 | /* Run the command list here. Take ownership of it instead of | |
11970 | copying. We never want these commands to run later in | |
11971 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
11972 | be set at same address as this dprintf, or even if running the | |
11973 | commands here throws. */ | |
9c95aea1 KB |
11974 | counted_command_line cmds = std::move (bs->commands); |
11975 | gdb_assert (cmds != nullptr); | |
11976 | execute_control_commands (cmds.get (), 0); | |
9d6e6e84 HZ |
11977 | } |
11978 | ||
983af33b SDJ |
11979 | /* The breakpoint_ops structure to be used on static tracepoints with |
11980 | markers (`-m'). */ | |
11981 | ||
11982 | static void | |
626d2320 | 11983 | strace_marker_create_sals_from_location (struct event_location *location, |
03ada39e | 11984 | struct linespec_result *canonical) |
983af33b SDJ |
11985 | { |
11986 | struct linespec_sals lsal; | |
f00aae0f | 11987 | const char *arg_start, *arg; |
983af33b | 11988 | |
a20714ff | 11989 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 11990 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 11991 | |
f2fc3015 TT |
11992 | std::string str (arg_start, arg - arg_start); |
11993 | const char *ptr = str.c_str (); | |
a20714ff PA |
11994 | canonical->location |
11995 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 11996 | |
8e9e35b1 TT |
11997 | lsal.canonical |
11998 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 11999 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12000 | } |
12001 | ||
12002 | static void | |
12003 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12004 | struct linespec_result *canonical, | |
e1e01040 PA |
12005 | gdb::unique_xmalloc_ptr<char> cond_string, |
12006 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12007 | enum bptype type_wanted, |
12008 | enum bpdisp disposition, | |
12009 | int thread, | |
12010 | int task, int ignore_count, | |
983af33b | 12011 | int from_tty, int enabled, |
44f238bb | 12012 | int internal, unsigned flags) |
983af33b | 12013 | { |
6c5b2ebe | 12014 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12015 | |
12016 | /* If the user is creating a static tracepoint by marker id | |
12017 | (strace -m MARKER_ID), then store the sals index, so that | |
12018 | breakpoint_re_set can try to match up which of the newly | |
12019 | found markers corresponds to this one, and, don't try to | |
12020 | expand multiple locations for each sal, given than SALS | |
12021 | already should contain all sals for MARKER_ID. */ | |
12022 | ||
6c5b2ebe | 12023 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12024 | { |
6c5b2ebe PA |
12025 | event_location_up location |
12026 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12027 | |
3b003a61 PA |
12028 | std::unique_ptr<tracepoint> tp |
12029 | (new tracepoint (gdbarch, | |
12030 | type_wanted, | |
12031 | lsal.sals[i], | |
12032 | std::move (location), | |
12033 | NULL, | |
12034 | std::move (cond_string), | |
12035 | std::move (extra_string), | |
12036 | disposition, | |
12037 | thread, task, ignore_count, | |
12038 | from_tty, enabled, flags, | |
12039 | canonical->special_display)); | |
12040 | ||
983af33b SDJ |
12041 | /* Given that its possible to have multiple markers with |
12042 | the same string id, if the user is creating a static | |
12043 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12044 | store the sals index, so that breakpoint_re_set can | |
12045 | try to match up which of the newly found markers | |
12046 | corresponds to this one */ | |
12047 | tp->static_trace_marker_id_idx = i; | |
12048 | ||
b270e6f9 | 12049 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12050 | } |
12051 | } | |
12052 | ||
6d7a8c56 TT |
12053 | std::vector<symtab_and_line> |
12054 | static_marker_tracepoint::decode_location (struct event_location *location, | |
12055 | struct program_space *search_pspace) | |
983af33b | 12056 | { |
a20714ff | 12057 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 12058 | |
6c5b2ebe | 12059 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
6d7a8c56 | 12060 | if (sals.size () > static_trace_marker_id_idx) |
983af33b | 12061 | { |
6d7a8c56 | 12062 | sals[0] = sals[static_trace_marker_id_idx]; |
6c5b2ebe PA |
12063 | sals.resize (1); |
12064 | return sals; | |
983af33b SDJ |
12065 | } |
12066 | else | |
6d7a8c56 | 12067 | error (_("marker %s not found"), static_trace_marker_id.c_str ()); |
983af33b SDJ |
12068 | } |
12069 | ||
8613a476 TT |
12070 | /* Static tracepoints with marker (`-m'). */ |
12071 | static struct breakpoint_ops strace_marker_breakpoint_ops = | |
12072 | { | |
12073 | strace_marker_create_sals_from_location, | |
12074 | strace_marker_create_breakpoints_sal, | |
12075 | }; | |
983af33b SDJ |
12076 | |
12077 | static int | |
12078 | strace_marker_p (struct breakpoint *b) | |
12079 | { | |
7b572efb | 12080 | return b->type == bp_static_marker_tracepoint; |
983af33b SDJ |
12081 | } |
12082 | ||
53a5351d | 12083 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12084 | structures. */ |
c906108c SS |
12085 | |
12086 | void | |
fba45db2 | 12087 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12088 | { |
8a3fe4f8 | 12089 | gdb_assert (bpt != NULL); |
c906108c | 12090 | |
4a64f543 MS |
12091 | /* Has this bp already been deleted? This can happen because |
12092 | multiple lists can hold pointers to bp's. bpstat lists are | |
12093 | especial culprits. | |
12094 | ||
12095 | One example of this happening is a watchpoint's scope bp. When | |
12096 | the scope bp triggers, we notice that the watchpoint is out of | |
12097 | scope, and delete it. We also delete its scope bp. But the | |
12098 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
12099 | That bpstat is then checked for auto-deleting bp's, which are | |
12100 | deleted. | |
12101 | ||
12102 | A real solution to this problem might involve reference counts in | |
12103 | bp's, and/or giving them pointers back to their referencing | |
12104 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
12105 | storage when no more references were extent. A cheaper bandaid | |
12106 | was chosen. */ | |
c906108c SS |
12107 | if (bpt->type == bp_none) |
12108 | return; | |
12109 | ||
4a64f543 MS |
12110 | /* At least avoid this stale reference until the reference counting |
12111 | of breakpoints gets resolved. */ | |
d0fb5eae | 12112 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 12113 | { |
d0fb5eae | 12114 | struct breakpoint *related; |
3a5c3e22 | 12115 | struct watchpoint *w; |
d0fb5eae JK |
12116 | |
12117 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 12118 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 12119 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
12120 | w = (struct watchpoint *) bpt; |
12121 | else | |
12122 | w = NULL; | |
12123 | if (w != NULL) | |
12124 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
12125 | |
12126 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
12127 | for (related = bpt; related->related_breakpoint != bpt; | |
12128 | related = related->related_breakpoint); | |
12129 | related->related_breakpoint = bpt->related_breakpoint; | |
12130 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
12131 | } |
12132 | ||
a9634178 TJB |
12133 | /* watch_command_1 creates a watchpoint but only sets its number if |
12134 | update_watchpoint succeeds in creating its bp_locations. If there's | |
12135 | a problem in that process, we'll be asked to delete the half-created | |
12136 | watchpoint. In that case, don't announce the deletion. */ | |
12137 | if (bpt->number) | |
76727919 | 12138 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 12139 | |
c906108c SS |
12140 | if (breakpoint_chain == bpt) |
12141 | breakpoint_chain = bpt->next; | |
12142 | ||
43892fdf | 12143 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12144 | if (b->next == bpt) |
01add95b SM |
12145 | { |
12146 | b->next = bpt->next; | |
12147 | break; | |
12148 | } | |
c906108c | 12149 | |
f431efe5 PA |
12150 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
12151 | been freed. */ | |
12152 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 12153 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
12154 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
12155 | commands are associated with the bpstat; if we remove it here, | |
12156 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
12157 | event-top.c won't do anything, and temporary breakpoints with | |
12158 | commands won't work. */ | |
12159 | ||
12160 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
12161 | ||
4a64f543 MS |
12162 | /* Now that breakpoint is removed from breakpoint list, update the |
12163 | global location list. This will remove locations that used to | |
12164 | belong to this breakpoint. Do this before freeing the breakpoint | |
12165 | itself, since remove_breakpoint looks at location's owner. It | |
12166 | might be better design to have location completely | |
12167 | self-contained, but it's not the case now. */ | |
44702360 | 12168 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 12169 | |
4a64f543 MS |
12170 | /* On the chance that someone will soon try again to delete this |
12171 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 12172 | bpt->type = bp_none; |
4d01a485 | 12173 | delete bpt; |
c906108c SS |
12174 | } |
12175 | ||
51be5b68 PA |
12176 | /* Iterator function to call a user-provided callback function once |
12177 | for each of B and its related breakpoints. */ | |
12178 | ||
12179 | static void | |
12180 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 12181 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
12182 | { |
12183 | struct breakpoint *related; | |
12184 | ||
12185 | related = b; | |
12186 | do | |
12187 | { | |
12188 | struct breakpoint *next; | |
12189 | ||
12190 | /* FUNCTION may delete RELATED. */ | |
12191 | next = related->related_breakpoint; | |
12192 | ||
12193 | if (next == related) | |
12194 | { | |
12195 | /* RELATED is the last ring entry. */ | |
48649e1b | 12196 | function (related); |
51be5b68 PA |
12197 | |
12198 | /* FUNCTION may have deleted it, so we'd never reach back to | |
12199 | B. There's nothing left to do anyway, so just break | |
12200 | out. */ | |
12201 | break; | |
12202 | } | |
12203 | else | |
48649e1b | 12204 | function (related); |
51be5b68 PA |
12205 | |
12206 | related = next; | |
12207 | } | |
12208 | while (related != b); | |
12209 | } | |
95a42b64 | 12210 | |
4495129a | 12211 | static void |
981a3fb3 | 12212 | delete_command (const char *arg, int from_tty) |
c906108c | 12213 | { |
ea9365bb TT |
12214 | dont_repeat (); |
12215 | ||
c906108c SS |
12216 | if (arg == 0) |
12217 | { | |
12218 | int breaks_to_delete = 0; | |
12219 | ||
46c6471b | 12220 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
12221 | internal breakpoints, these have to be deleted with an |
12222 | explicit breakpoint number argument. */ | |
43892fdf | 12223 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 12224 | if (user_breakpoint_p (b)) |
973d738b DJ |
12225 | { |
12226 | breaks_to_delete = 1; | |
12227 | break; | |
12228 | } | |
c906108c SS |
12229 | |
12230 | /* Ask user only if there are some breakpoints to delete. */ | |
12231 | if (!from_tty | |
e2e0b3e5 | 12232 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
12233 | for (breakpoint *b : all_breakpoints_safe ()) |
12234 | if (user_breakpoint_p (b)) | |
12235 | delete_breakpoint (b); | |
c906108c SS |
12236 | } |
12237 | else | |
48649e1b | 12238 | map_breakpoint_numbers |
b926417a | 12239 | (arg, [&] (breakpoint *br) |
48649e1b | 12240 | { |
b926417a | 12241 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 12242 | }); |
c906108c SS |
12243 | } |
12244 | ||
c2f4122d PA |
12245 | /* Return true if all locations of B bound to PSPACE are pending. If |
12246 | PSPACE is NULL, all locations of all program spaces are | |
12247 | considered. */ | |
12248 | ||
0d381245 | 12249 | static int |
c2f4122d | 12250 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 12251 | { |
40cb8ca5 | 12252 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
12253 | if ((pspace == NULL |
12254 | || loc->pspace == pspace) | |
12255 | && !loc->shlib_disabled | |
8645ff69 | 12256 | && !loc->pspace->executing_startup) |
0d381245 VP |
12257 | return 0; |
12258 | return 1; | |
fe3f5fa8 VP |
12259 | } |
12260 | ||
776592bf DE |
12261 | /* Subroutine of update_breakpoint_locations to simplify it. |
12262 | Return non-zero if multiple fns in list LOC have the same name. | |
12263 | Null names are ignored. */ | |
12264 | ||
12265 | static int | |
12266 | ambiguous_names_p (struct bp_location *loc) | |
12267 | { | |
12268 | struct bp_location *l; | |
2698f5ea | 12269 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 12270 | xcalloc, xfree)); |
776592bf DE |
12271 | |
12272 | for (l = loc; l != NULL; l = l->next) | |
12273 | { | |
12274 | const char **slot; | |
23d6ee64 | 12275 | const char *name = l->function_name.get (); |
776592bf DE |
12276 | |
12277 | /* Allow for some names to be NULL, ignore them. */ | |
12278 | if (name == NULL) | |
12279 | continue; | |
12280 | ||
c1fb9836 | 12281 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 12282 | INSERT); |
4a64f543 MS |
12283 | /* NOTE: We can assume slot != NULL here because xcalloc never |
12284 | returns NULL. */ | |
776592bf | 12285 | if (*slot != NULL) |
c1fb9836 | 12286 | return 1; |
776592bf DE |
12287 | *slot = name; |
12288 | } | |
12289 | ||
776592bf DE |
12290 | return 0; |
12291 | } | |
12292 | ||
0fb4aa4b PA |
12293 | /* When symbols change, it probably means the sources changed as well, |
12294 | and it might mean the static tracepoint markers are no longer at | |
12295 | the same address or line numbers they used to be at last we | |
12296 | checked. Losing your static tracepoints whenever you rebuild is | |
12297 | undesirable. This function tries to resync/rematch gdb static | |
12298 | tracepoints with the markers on the target, for static tracepoints | |
12299 | that have not been set by marker id. Static tracepoint that have | |
12300 | been set by marker id are reset by marker id in breakpoint_re_set. | |
12301 | The heuristic is: | |
12302 | ||
12303 | 1) For a tracepoint set at a specific address, look for a marker at | |
12304 | the old PC. If one is found there, assume to be the same marker. | |
12305 | If the name / string id of the marker found is different from the | |
12306 | previous known name, assume that means the user renamed the marker | |
12307 | in the sources, and output a warning. | |
12308 | ||
12309 | 2) For a tracepoint set at a given line number, look for a marker | |
12310 | at the new address of the old line number. If one is found there, | |
12311 | assume to be the same marker. If the name / string id of the | |
12312 | marker found is different from the previous known name, assume that | |
12313 | means the user renamed the marker in the sources, and output a | |
12314 | warning. | |
12315 | ||
12316 | 3) If a marker is no longer found at the same address or line, it | |
12317 | may mean the marker no longer exists. But it may also just mean | |
12318 | the code changed a bit. Maybe the user added a few lines of code | |
12319 | that made the marker move up or down (in line number terms). Ask | |
12320 | the target for info about the marker with the string id as we knew | |
12321 | it. If found, update line number and address in the matching | |
12322 | static tracepoint. This will get confused if there's more than one | |
12323 | marker with the same ID (possible in UST, although unadvised | |
12324 | precisely because it confuses tools). */ | |
12325 | ||
12326 | static struct symtab_and_line | |
12327 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
12328 | { | |
d9b3f62e | 12329 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
12330 | struct static_tracepoint_marker marker; |
12331 | CORE_ADDR pc; | |
0fb4aa4b PA |
12332 | |
12333 | pc = sal.pc; | |
12334 | if (sal.line) | |
12335 | find_line_pc (sal.symtab, sal.line, &pc); | |
12336 | ||
12337 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
12338 | { | |
5d9310c4 | 12339 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 12340 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
12341 | b->number, tp->static_trace_marker_id.c_str (), |
12342 | marker.str_id.c_str ()); | |
0fb4aa4b | 12343 | |
5d9310c4 | 12344 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
12345 | |
12346 | return sal; | |
12347 | } | |
12348 | ||
12349 | /* Old marker wasn't found on target at lineno. Try looking it up | |
12350 | by string ID. */ | |
12351 | if (!sal.explicit_pc | |
12352 | && sal.line != 0 | |
12353 | && sal.symtab != NULL | |
5d9310c4 | 12354 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 12355 | { |
5d9310c4 SM |
12356 | std::vector<static_tracepoint_marker> markers |
12357 | = target_static_tracepoint_markers_by_strid | |
12358 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 12359 | |
5d9310c4 | 12360 | if (!markers.empty ()) |
0fb4aa4b | 12361 | { |
0fb4aa4b | 12362 | struct symbol *sym; |
80e1d417 | 12363 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 12364 | struct ui_out *uiout = current_uiout; |
67994074 | 12365 | struct explicit_location explicit_loc; |
0fb4aa4b | 12366 | |
5d9310c4 | 12367 | tpmarker = &markers[0]; |
0fb4aa4b | 12368 | |
5d9310c4 | 12369 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
12370 | |
12371 | warning (_("marker for static tracepoint %d (%s) not " | |
12372 | "found at previous line number"), | |
5d9310c4 | 12373 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 12374 | |
51abb421 | 12375 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 12376 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 12377 | uiout->text ("Now in "); |
0fb4aa4b PA |
12378 | if (sym) |
12379 | { | |
987012b8 | 12380 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 12381 | function_name_style.style ()); |
112e8700 | 12382 | uiout->text (" at "); |
0fb4aa4b | 12383 | } |
112e8700 | 12384 | uiout->field_string ("file", |
cbe56571 | 12385 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 12386 | file_name_style.style ()); |
112e8700 | 12387 | uiout->text (":"); |
0fb4aa4b | 12388 | |
112e8700 | 12389 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 12390 | { |
0b0865da | 12391 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 12392 | |
112e8700 | 12393 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
12394 | } |
12395 | ||
381befee | 12396 | uiout->field_signed ("line", sal2.line); |
112e8700 | 12397 | uiout->text ("\n"); |
0fb4aa4b | 12398 | |
80e1d417 | 12399 | b->loc->line_number = sal2.line; |
2f202fde | 12400 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 12401 | |
d28cd78a | 12402 | b->location.reset (NULL); |
67994074 KS |
12403 | initialize_explicit_location (&explicit_loc); |
12404 | explicit_loc.source_filename | |
00e52e53 | 12405 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
12406 | explicit_loc.line_offset.offset = b->loc->line_number; |
12407 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 12408 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
12409 | |
12410 | /* Might be nice to check if function changed, and warn if | |
12411 | so. */ | |
0fb4aa4b PA |
12412 | } |
12413 | } | |
12414 | return sal; | |
12415 | } | |
12416 | ||
8d3788bd VP |
12417 | /* Returns 1 iff locations A and B are sufficiently same that |
12418 | we don't need to report breakpoint as changed. */ | |
12419 | ||
12420 | static int | |
12421 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
12422 | { | |
12423 | while (a && b) | |
12424 | { | |
12425 | if (a->address != b->address) | |
12426 | return 0; | |
12427 | ||
12428 | if (a->shlib_disabled != b->shlib_disabled) | |
12429 | return 0; | |
12430 | ||
12431 | if (a->enabled != b->enabled) | |
12432 | return 0; | |
12433 | ||
b5fa468f TBA |
12434 | if (a->disabled_by_cond != b->disabled_by_cond) |
12435 | return 0; | |
12436 | ||
8d3788bd VP |
12437 | a = a->next; |
12438 | b = b->next; | |
12439 | } | |
12440 | ||
12441 | if ((a == NULL) != (b == NULL)) | |
12442 | return 0; | |
12443 | ||
12444 | return 1; | |
12445 | } | |
12446 | ||
c2f4122d PA |
12447 | /* Split all locations of B that are bound to PSPACE out of B's |
12448 | location list to a separate list and return that list's head. If | |
12449 | PSPACE is NULL, hoist out all locations of B. */ | |
12450 | ||
12451 | static struct bp_location * | |
12452 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
12453 | { | |
12454 | struct bp_location head; | |
12455 | struct bp_location *i = b->loc; | |
12456 | struct bp_location **i_link = &b->loc; | |
12457 | struct bp_location *hoisted = &head; | |
12458 | ||
12459 | if (pspace == NULL) | |
12460 | { | |
12461 | i = b->loc; | |
12462 | b->loc = NULL; | |
12463 | return i; | |
12464 | } | |
12465 | ||
12466 | head.next = NULL; | |
12467 | ||
12468 | while (i != NULL) | |
12469 | { | |
12470 | if (i->pspace == pspace) | |
12471 | { | |
12472 | *i_link = i->next; | |
12473 | i->next = NULL; | |
12474 | hoisted->next = i; | |
12475 | hoisted = i; | |
12476 | } | |
12477 | else | |
12478 | i_link = &i->next; | |
12479 | i = *i_link; | |
12480 | } | |
12481 | ||
12482 | return head.next; | |
12483 | } | |
12484 | ||
12485 | /* Create new breakpoint locations for B (a hardware or software | |
12486 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
12487 | zero, then B is a ranged breakpoint. Only recreates locations for | |
12488 | FILTER_PSPACE. Locations of other program spaces are left | |
12489 | untouched. */ | |
f1310107 | 12490 | |
0e30163f | 12491 | void |
0d381245 | 12492 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 12493 | struct program_space *filter_pspace, |
6c5b2ebe PA |
12494 | gdb::array_view<const symtab_and_line> sals, |
12495 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 12496 | { |
c2f4122d | 12497 | struct bp_location *existing_locations; |
0d381245 | 12498 | |
6c5b2ebe | 12499 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
12500 | { |
12501 | /* Ranged breakpoints have only one start location and one end | |
12502 | location. */ | |
12503 | b->enable_state = bp_disabled; | |
6cb06a8c TT |
12504 | gdb_printf (gdb_stderr, |
12505 | _("Could not reset ranged breakpoint %d: " | |
12506 | "multiple locations found\n"), | |
12507 | b->number); | |
f8eba3c6 TT |
12508 | return; |
12509 | } | |
f1310107 | 12510 | |
4a64f543 MS |
12511 | /* If there's no new locations, and all existing locations are |
12512 | pending, don't do anything. This optimizes the common case where | |
12513 | all locations are in the same shared library, that was unloaded. | |
12514 | We'd like to retain the location, so that when the library is | |
12515 | loaded again, we don't loose the enabled/disabled status of the | |
12516 | individual locations. */ | |
6c5b2ebe | 12517 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
12518 | return; |
12519 | ||
c2f4122d | 12520 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 12521 | |
6c5b2ebe | 12522 | for (const auto &sal : sals) |
fe3f5fa8 | 12523 | { |
f8eba3c6 TT |
12524 | struct bp_location *new_loc; |
12525 | ||
6c5b2ebe | 12526 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 12527 | |
06615628 | 12528 | new_loc = b->add_location (sal); |
fe3f5fa8 | 12529 | |
0d381245 VP |
12530 | /* Reparse conditions, they might contain references to the |
12531 | old symtab. */ | |
12532 | if (b->cond_string != NULL) | |
12533 | { | |
bbc13ae3 | 12534 | const char *s; |
fe3f5fa8 | 12535 | |
6f781ee3 | 12536 | s = b->cond_string.get (); |
a70b8144 | 12537 | try |
0d381245 | 12538 | { |
6c5b2ebe PA |
12539 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
12540 | block_for_pc (sal.pc), | |
0d381245 VP |
12541 | 0); |
12542 | } | |
230d2906 | 12543 | catch (const gdb_exception_error &e) |
0d381245 | 12544 | { |
b5fa468f | 12545 | new_loc->disabled_by_cond = true; |
0d381245 VP |
12546 | } |
12547 | } | |
fe3f5fa8 | 12548 | |
6c5b2ebe | 12549 | if (!sals_end.empty ()) |
f1310107 | 12550 | { |
6c5b2ebe | 12551 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 12552 | |
6c5b2ebe | 12553 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 12554 | } |
0d381245 | 12555 | } |
fe3f5fa8 | 12556 | |
4a64f543 MS |
12557 | /* If possible, carry over 'disable' status from existing |
12558 | breakpoints. */ | |
0d381245 VP |
12559 | { |
12560 | struct bp_location *e = existing_locations; | |
776592bf DE |
12561 | /* If there are multiple breakpoints with the same function name, |
12562 | e.g. for inline functions, comparing function names won't work. | |
12563 | Instead compare pc addresses; this is just a heuristic as things | |
12564 | may have moved, but in practice it gives the correct answer | |
12565 | often enough until a better solution is found. */ | |
12566 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
12567 | ||
0d381245 VP |
12568 | for (; e; e = e->next) |
12569 | { | |
b5fa468f | 12570 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 12571 | { |
776592bf DE |
12572 | if (have_ambiguous_names) |
12573 | { | |
40cb8ca5 | 12574 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
12575 | { |
12576 | /* Ignore software vs hardware location type at | |
12577 | this point, because with "set breakpoint | |
12578 | auto-hw", after a re-set, locations that were | |
12579 | hardware can end up as software, or vice versa. | |
12580 | As mentioned above, this is an heuristic and in | |
12581 | practice should give the correct answer often | |
12582 | enough. */ | |
12583 | if (breakpoint_locations_match (e, l, true)) | |
12584 | { | |
b5fa468f TBA |
12585 | l->enabled = e->enabled; |
12586 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
12587 | break; |
12588 | } | |
12589 | } | |
776592bf DE |
12590 | } |
12591 | else | |
12592 | { | |
40cb8ca5 | 12593 | for (bp_location *l : b->locations ()) |
776592bf | 12594 | if (l->function_name |
23d6ee64 TT |
12595 | && strcmp (e->function_name.get (), |
12596 | l->function_name.get ()) == 0) | |
776592bf | 12597 | { |
b5fa468f TBA |
12598 | l->enabled = e->enabled; |
12599 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
12600 | break; |
12601 | } | |
12602 | } | |
0d381245 VP |
12603 | } |
12604 | } | |
12605 | } | |
fe3f5fa8 | 12606 | |
8d3788bd | 12607 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 12608 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
12609 | } |
12610 | ||
f00aae0f | 12611 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
12612 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
12613 | ||
6c5b2ebe | 12614 | static std::vector<symtab_and_line> |
f00aae0f | 12615 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 12616 | struct program_space *search_pspace, int *found) |
ef23e705 | 12617 | { |
cc06b668 | 12618 | struct gdb_exception exception; |
ef23e705 | 12619 | |
6c5b2ebe PA |
12620 | std::vector<symtab_and_line> sals; |
12621 | ||
a70b8144 | 12622 | try |
ef23e705 | 12623 | { |
c47614fe | 12624 | sals = b->decode_location (location, search_pspace); |
ef23e705 | 12625 | } |
94aeb44b | 12626 | catch (gdb_exception_error &e) |
ef23e705 TJB |
12627 | { |
12628 | int not_found_and_ok = 0; | |
492d29ea | 12629 | |
ef23e705 TJB |
12630 | /* For pending breakpoints, it's expected that parsing will |
12631 | fail until the right shared library is loaded. User has | |
12632 | already told to create pending breakpoints and don't need | |
12633 | extra messages. If breakpoint is in bp_shlib_disabled | |
12634 | state, then user already saw the message about that | |
12635 | breakpoint being disabled, and don't want to see more | |
12636 | errors. */ | |
58438ac1 | 12637 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
12638 | && (b->condition_not_parsed |
12639 | || (b->loc != NULL | |
12640 | && search_pspace != NULL | |
12641 | && b->loc->pspace != search_pspace) | |
ef23e705 | 12642 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 12643 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
12644 | || b->enable_state == bp_disabled)) |
12645 | not_found_and_ok = 1; | |
12646 | ||
12647 | if (!not_found_and_ok) | |
12648 | { | |
12649 | /* We surely don't want to warn about the same breakpoint | |
12650 | 10 times. One solution, implemented here, is disable | |
12651 | the breakpoint on error. Another solution would be to | |
12652 | have separate 'warning emitted' flag. Since this | |
12653 | happens only when a binary has changed, I don't know | |
12654 | which approach is better. */ | |
12655 | b->enable_state = bp_disabled; | |
eedc3f4f | 12656 | throw; |
ef23e705 | 12657 | } |
94aeb44b TT |
12658 | |
12659 | exception = std::move (e); | |
ef23e705 TJB |
12660 | } |
12661 | ||
492d29ea | 12662 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 12663 | { |
6c5b2ebe PA |
12664 | for (auto &sal : sals) |
12665 | resolve_sal_pc (&sal); | |
f00aae0f | 12666 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 12667 | { |
6f781ee3 | 12668 | gdb::unique_xmalloc_ptr<char> cond_string, extra_string; |
ed1d1739 | 12669 | int thread, task; |
ef23e705 | 12670 | |
6f781ee3 | 12671 | find_condition_and_thread_for_sals (sals, b->extra_string.get (), |
b5fa468f TBA |
12672 | &cond_string, &thread, |
12673 | &task, &extra_string); | |
f00aae0f | 12674 | gdb_assert (b->cond_string == NULL); |
ef23e705 | 12675 | if (cond_string) |
6f781ee3 | 12676 | b->cond_string = std::move (cond_string); |
ef23e705 TJB |
12677 | b->thread = thread; |
12678 | b->task = task; | |
e7e0cddf | 12679 | if (extra_string) |
6f781ee3 | 12680 | b->extra_string = std::move (extra_string); |
ef23e705 TJB |
12681 | b->condition_not_parsed = 0; |
12682 | } | |
12683 | ||
7b572efb | 12684 | if (b->type == bp_static_tracepoint) |
6c5b2ebe | 12685 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 12686 | |
58438ac1 TT |
12687 | *found = 1; |
12688 | } | |
12689 | else | |
12690 | *found = 0; | |
ef23e705 TJB |
12691 | |
12692 | return sals; | |
12693 | } | |
12694 | ||
348d480f PA |
12695 | /* The default re_set method, for typical hardware or software |
12696 | breakpoints. Reevaluate the breakpoint and recreate its | |
12697 | locations. */ | |
12698 | ||
12699 | static void | |
28010a5d | 12700 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 12701 | { |
c2f4122d | 12702 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 12703 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 12704 | |
6c5b2ebe PA |
12705 | int found; |
12706 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
12707 | filter_pspace, &found); | |
ef23e705 | 12708 | if (found) |
6c5b2ebe | 12709 | expanded = std::move (sals); |
ef23e705 | 12710 | |
f00aae0f | 12711 | if (b->location_range_end != NULL) |
f1310107 | 12712 | { |
6c5b2ebe PA |
12713 | std::vector<symtab_and_line> sals_end |
12714 | = location_to_sals (b, b->location_range_end.get (), | |
12715 | filter_pspace, &found); | |
f1310107 | 12716 | if (found) |
6c5b2ebe | 12717 | expanded_end = std::move (sals_end); |
f1310107 TJB |
12718 | } |
12719 | ||
c2f4122d | 12720 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
12721 | } |
12722 | ||
983af33b SDJ |
12723 | /* Default method for creating SALs from an address string. It basically |
12724 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
12725 | ||
12726 | static void | |
626d2320 | 12727 | create_sals_from_location_default (struct event_location *location, |
03ada39e | 12728 | struct linespec_result *canonical) |
983af33b | 12729 | { |
f00aae0f | 12730 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
12731 | } |
12732 | ||
983af33b | 12733 | /* Decode the line represented by S by calling decode_line_full. This is the |
5f700d83 | 12734 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 12735 | |
6c5b2ebe | 12736 | static std::vector<symtab_and_line> |
f00aae0f | 12737 | decode_location_default (struct breakpoint *b, |
626d2320 | 12738 | struct event_location *location, |
6c5b2ebe | 12739 | struct program_space *search_pspace) |
983af33b SDJ |
12740 | { |
12741 | struct linespec_result canonical; | |
12742 | ||
c2f4122d | 12743 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 12744 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 12745 | b->filter.get ()); |
983af33b SDJ |
12746 | |
12747 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 12748 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 12749 | |
6c5b2ebe | 12750 | if (!canonical.lsals.empty ()) |
983af33b | 12751 | { |
6c5b2ebe PA |
12752 | const linespec_sals &lsal = canonical.lsals[0]; |
12753 | return std::move (lsal.sals); | |
983af33b | 12754 | } |
6c5b2ebe | 12755 | return {}; |
983af33b SDJ |
12756 | } |
12757 | ||
bf469271 | 12758 | /* Reset a breakpoint. */ |
c906108c | 12759 | |
bf469271 PA |
12760 | static void |
12761 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 12762 | { |
fdf44873 TT |
12763 | input_radix = b->input_radix; |
12764 | set_language (b->language); | |
c906108c | 12765 | |
c47614fe | 12766 | b->re_set (); |
c906108c SS |
12767 | } |
12768 | ||
c2f4122d PA |
12769 | /* Re-set breakpoint locations for the current program space. |
12770 | Locations bound to other program spaces are left untouched. */ | |
12771 | ||
c906108c | 12772 | void |
69de3c6a | 12773 | breakpoint_re_set (void) |
c906108c | 12774 | { |
c5aa993b | 12775 | { |
fdf44873 TT |
12776 | scoped_restore_current_language save_language; |
12777 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 12778 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 12779 | |
8e817061 JB |
12780 | /* breakpoint_re_set_one sets the current_language to the language |
12781 | of the breakpoint it is resetting (see prepare_re_set_context) | |
12782 | before re-evaluating the breakpoint's location. This change can | |
12783 | unfortunately get undone by accident if the language_mode is set | |
12784 | to auto, and we either switch frames, or more likely in this context, | |
12785 | we select the current frame. | |
12786 | ||
12787 | We prevent this by temporarily turning the language_mode to | |
12788 | language_mode_manual. We restore it once all breakpoints | |
12789 | have been reset. */ | |
12790 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
12791 | language_mode = language_mode_manual; | |
12792 | ||
5ed8105e PA |
12793 | /* Note: we must not try to insert locations until after all |
12794 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
12795 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
12796 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 12797 | |
1428b37a | 12798 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 12799 | { |
a70b8144 | 12800 | try |
bf469271 PA |
12801 | { |
12802 | breakpoint_re_set_one (b); | |
12803 | } | |
230d2906 | 12804 | catch (const gdb_exception &ex) |
bf469271 PA |
12805 | { |
12806 | exception_fprintf (gdb_stderr, ex, | |
12807 | "Error in re-setting breakpoint %d: ", | |
12808 | b->number); | |
12809 | } | |
5ed8105e | 12810 | } |
5ed8105e PA |
12811 | |
12812 | jit_breakpoint_re_set (); | |
12813 | } | |
6c95b8df | 12814 | |
af02033e PP |
12815 | create_overlay_event_breakpoint (); |
12816 | create_longjmp_master_breakpoint (); | |
12817 | create_std_terminate_master_breakpoint (); | |
186c406b | 12818 | create_exception_master_breakpoint (); |
2a7f3dff PA |
12819 | |
12820 | /* Now we can insert. */ | |
12821 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
12822 | } |
12823 | \f | |
c906108c SS |
12824 | /* Reset the thread number of this breakpoint: |
12825 | ||
12826 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 12827 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 12828 | void |
fba45db2 | 12829 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
12830 | { |
12831 | if (b->thread != -1) | |
12832 | { | |
00431a78 | 12833 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
12834 | |
12835 | /* We're being called after following a fork. The new fork is | |
12836 | selected as current, and unless this was a vfork will have a | |
12837 | different program space from the original thread. Reset that | |
12838 | as well. */ | |
12839 | b->loc->pspace = current_program_space; | |
c906108c SS |
12840 | } |
12841 | } | |
12842 | ||
03ac34d5 MS |
12843 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12844 | If from_tty is nonzero, it prints a message to that effect, | |
12845 | which ends with a period (no newline). */ | |
12846 | ||
c906108c | 12847 | void |
fba45db2 | 12848 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 12849 | { |
c906108c SS |
12850 | if (count < 0) |
12851 | count = 0; | |
12852 | ||
43892fdf | 12853 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12854 | if (b->number == bptnum) |
01add95b SM |
12855 | { |
12856 | if (is_tracepoint (b)) | |
12857 | { | |
12858 | if (from_tty && count != 0) | |
6cb06a8c TT |
12859 | gdb_printf (_("Ignore count ignored for tracepoint %d."), |
12860 | bptnum); | |
01add95b SM |
12861 | return; |
12862 | } | |
12863 | ||
12864 | b->ignore_count = count; | |
12865 | if (from_tty) | |
12866 | { | |
12867 | if (count == 0) | |
6cb06a8c TT |
12868 | gdb_printf (_("Will stop next time " |
12869 | "breakpoint %d is reached."), | |
12870 | bptnum); | |
01add95b | 12871 | else if (count == 1) |
6cb06a8c TT |
12872 | gdb_printf (_("Will ignore next crossing of breakpoint %d."), |
12873 | bptnum); | |
01add95b | 12874 | else |
6cb06a8c TT |
12875 | gdb_printf (_("Will ignore next %d " |
12876 | "crossings of breakpoint %d."), | |
12877 | count, bptnum); | |
01add95b SM |
12878 | } |
12879 | gdb::observers::breakpoint_modified.notify (b); | |
12880 | return; | |
12881 | } | |
c906108c | 12882 | |
8a3fe4f8 | 12883 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
12884 | } |
12885 | ||
c906108c SS |
12886 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
12887 | ||
12888 | static void | |
0b39b52e | 12889 | ignore_command (const char *args, int from_tty) |
c906108c | 12890 | { |
0b39b52e | 12891 | const char *p = args; |
52f0bd74 | 12892 | int num; |
c906108c SS |
12893 | |
12894 | if (p == 0) | |
e2e0b3e5 | 12895 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 12896 | |
c906108c | 12897 | num = get_number (&p); |
5c44784c | 12898 | if (num == 0) |
8a3fe4f8 | 12899 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 12900 | if (*p == 0) |
8a3fe4f8 | 12901 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
12902 | |
12903 | set_ignore_count (num, | |
12904 | longest_to_int (value_as_long (parse_and_eval (p))), | |
12905 | from_tty); | |
221ea385 | 12906 | if (from_tty) |
6cb06a8c | 12907 | gdb_printf ("\n"); |
c906108c SS |
12908 | } |
12909 | \f | |
d0fe4701 XR |
12910 | |
12911 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
12912 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
12913 | |
12914 | static void | |
d0fe4701 XR |
12915 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
12916 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 12917 | { |
d0fe4701 XR |
12918 | if (bp_num_range.first == 0) |
12919 | { | |
12920 | warning (_("bad breakpoint number at or near '%d'"), | |
12921 | bp_num_range.first); | |
12922 | } | |
12923 | else | |
c906108c | 12924 | { |
d0fe4701 | 12925 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 12926 | { |
d0fe4701 XR |
12927 | bool match = false; |
12928 | ||
1428b37a | 12929 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 12930 | if (b->number == i) |
5c44784c | 12931 | { |
bfd28288 | 12932 | match = true; |
48649e1b | 12933 | function (b); |
11cf8741 | 12934 | break; |
5c44784c | 12935 | } |
bfd28288 | 12936 | if (!match) |
6cb06a8c | 12937 | gdb_printf (_("No breakpoint number %d.\n"), i); |
c5aa993b | 12938 | } |
c906108c SS |
12939 | } |
12940 | } | |
12941 | ||
d0fe4701 XR |
12942 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
12943 | ARGS. */ | |
12944 | ||
12945 | static void | |
12946 | map_breakpoint_numbers (const char *args, | |
12947 | gdb::function_view<void (breakpoint *)> function) | |
12948 | { | |
12949 | if (args == NULL || *args == '\0') | |
12950 | error_no_arg (_("one or more breakpoint numbers")); | |
12951 | ||
12952 | number_or_range_parser parser (args); | |
12953 | ||
12954 | while (!parser.finished ()) | |
12955 | { | |
12956 | int num = parser.get_number (); | |
12957 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
12958 | } | |
12959 | } | |
12960 | ||
12961 | /* Return the breakpoint location structure corresponding to the | |
12962 | BP_NUM and LOC_NUM values. */ | |
12963 | ||
0d381245 | 12964 | static struct bp_location * |
d0fe4701 | 12965 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 12966 | { |
43892fdf | 12967 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
12968 | |
12969 | if (!b || b->number != bp_num) | |
d0fe4701 | 12970 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 12971 | |
0d381245 | 12972 | if (loc_num == 0) |
d0fe4701 | 12973 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 12974 | |
d0fe4701 | 12975 | int n = 0; |
40cb8ca5 | 12976 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
12977 | if (++n == loc_num) |
12978 | return loc; | |
12979 | ||
12980 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
12981 | } |
12982 | ||
95e95a6d PA |
12983 | /* Modes of operation for extract_bp_num. */ |
12984 | enum class extract_bp_kind | |
12985 | { | |
12986 | /* Extracting a breakpoint number. */ | |
12987 | bp, | |
12988 | ||
12989 | /* Extracting a location number. */ | |
12990 | loc, | |
12991 | }; | |
12992 | ||
12993 | /* Extract a breakpoint or location number (as determined by KIND) | |
12994 | from the string starting at START. TRAILER is a character which | |
12995 | can be found after the number. If you don't want a trailer, use | |
12996 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
12997 | string. This always returns a positive integer. */ | |
12998 | ||
12999 | static int | |
13000 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13001 | int trailer, const char **end_out = NULL) | |
13002 | { | |
13003 | const char *end = start; | |
13004 | int num = get_number_trailer (&end, trailer); | |
13005 | if (num < 0) | |
13006 | error (kind == extract_bp_kind::bp | |
13007 | ? _("Negative breakpoint number '%.*s'") | |
13008 | : _("Negative breakpoint location number '%.*s'"), | |
13009 | int (end - start), start); | |
13010 | if (num == 0) | |
13011 | error (kind == extract_bp_kind::bp | |
13012 | ? _("Bad breakpoint number '%.*s'") | |
13013 | : _("Bad breakpoint location number '%.*s'"), | |
13014 | int (end - start), start); | |
13015 | ||
13016 | if (end_out != NULL) | |
13017 | *end_out = end; | |
13018 | return num; | |
13019 | } | |
13020 | ||
13021 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13022 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13023 | representing the (inclusive) range. The returned pair's elements | |
13024 | are always positive integers. */ | |
13025 | ||
13026 | static std::pair<int, int> | |
13027 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13028 | const std::string &arg, | |
13029 | std::string::size_type arg_offset) | |
13030 | { | |
13031 | std::pair<int, int> range; | |
13032 | const char *bp_loc = &arg[arg_offset]; | |
13033 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13034 | if (dash != std::string::npos) | |
13035 | { | |
13036 | /* bp_loc is a range (x-z). */ | |
13037 | if (arg.length () == dash + 1) | |
13038 | error (kind == extract_bp_kind::bp | |
13039 | ? _("Bad breakpoint number at or near: '%s'") | |
13040 | : _("Bad breakpoint location number at or near: '%s'"), | |
13041 | bp_loc); | |
13042 | ||
13043 | const char *end; | |
13044 | const char *start_first = bp_loc; | |
13045 | const char *start_second = &arg[dash + 1]; | |
13046 | range.first = extract_bp_num (kind, start_first, '-'); | |
13047 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
13048 | ||
13049 | if (range.first > range.second) | |
13050 | error (kind == extract_bp_kind::bp | |
13051 | ? _("Inverted breakpoint range at '%.*s'") | |
13052 | : _("Inverted breakpoint location range at '%.*s'"), | |
13053 | int (end - start_first), start_first); | |
13054 | } | |
13055 | else | |
13056 | { | |
13057 | /* bp_loc is a single value. */ | |
13058 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
13059 | range.second = range.first; | |
13060 | } | |
13061 | return range; | |
13062 | } | |
13063 | ||
d0fe4701 XR |
13064 | /* Extract the breakpoint/location range specified by ARG. Returns |
13065 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
13066 | BP_LOC_RANGE. | |
13067 | ||
13068 | ARG may be in any of the following forms: | |
13069 | ||
13070 | x where 'x' is a breakpoint number. | |
13071 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
13072 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
13073 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
13074 | location number range. | |
13075 | */ | |
13076 | ||
cc638e86 | 13077 | static void |
d0fe4701 XR |
13078 | extract_bp_number_and_location (const std::string &arg, |
13079 | std::pair<int, int> &bp_num_range, | |
13080 | std::pair<int, int> &bp_loc_range) | |
13081 | { | |
13082 | std::string::size_type dot = arg.find ('.'); | |
13083 | ||
13084 | if (dot != std::string::npos) | |
13085 | { | |
13086 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
13087 | ||
13088 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 13089 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 13090 | |
95e95a6d PA |
13091 | bp_num_range.first |
13092 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
13093 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 13094 | |
95e95a6d PA |
13095 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
13096 | arg, dot + 1); | |
d0fe4701 XR |
13097 | } |
13098 | else | |
13099 | { | |
13100 | /* Handle x and x-y cases. */ | |
d0fe4701 | 13101 | |
95e95a6d | 13102 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
13103 | bp_loc_range.first = 0; |
13104 | bp_loc_range.second = 0; | |
13105 | } | |
d0fe4701 XR |
13106 | } |
13107 | ||
13108 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
13109 | specifies whether to enable or disable. */ | |
13110 | ||
13111 | static void | |
13112 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
13113 | { | |
13114 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
13115 | if (loc != NULL) | |
13116 | { | |
b5fa468f TBA |
13117 | if (loc->disabled_by_cond && enable) |
13118 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13119 | "cannot enable."), bp_num, loc_num); | |
13120 | ||
d0fe4701 XR |
13121 | if (loc->enabled != enable) |
13122 | { | |
13123 | loc->enabled = enable; | |
13124 | mark_breakpoint_location_modified (loc); | |
13125 | } | |
13126 | if (target_supports_enable_disable_tracepoint () | |
13127 | && current_trace_status ()->running && loc->owner | |
13128 | && is_tracepoint (loc->owner)) | |
13129 | target_disable_tracepoint (loc); | |
13130 | } | |
13131 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
13132 | |
13133 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
13134 | } |
13135 | ||
13136 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
13137 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
13138 | (inclusive) range of location numbers of that breakpoint to | |
13139 | enable/disable. ENABLE specifies whether to enable or disable the | |
13140 | location. */ | |
13141 | ||
13142 | static void | |
13143 | enable_disable_breakpoint_location_range (int bp_num, | |
13144 | std::pair<int, int> &bp_loc_range, | |
13145 | bool enable) | |
13146 | { | |
13147 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
13148 | enable_disable_bp_num_loc (bp_num, i, enable); | |
13149 | } | |
0d381245 | 13150 | |
1900040c MS |
13151 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13152 | If from_tty is nonzero, it prints a message to that effect, | |
13153 | which ends with a period (no newline). */ | |
13154 | ||
c906108c | 13155 | void |
fba45db2 | 13156 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
13157 | { |
13158 | /* Never disable a watchpoint scope breakpoint; we want to | |
13159 | hit them when we leave scope so we can delete both the | |
13160 | watchpoint and its scope breakpoint at that time. */ | |
13161 | if (bpt->type == bp_watchpoint_scope) | |
13162 | return; | |
13163 | ||
b5de0fa7 | 13164 | bpt->enable_state = bp_disabled; |
c906108c | 13165 | |
b775012e LM |
13166 | /* Mark breakpoint locations modified. */ |
13167 | mark_breakpoint_modified (bpt); | |
13168 | ||
d248b706 KY |
13169 | if (target_supports_enable_disable_tracepoint () |
13170 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13171 | { | |
40cb8ca5 | 13172 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13173 | target_disable_tracepoint (location); |
13174 | } | |
13175 | ||
44702360 | 13176 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 13177 | |
76727919 | 13178 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13179 | } |
13180 | ||
d0fe4701 XR |
13181 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
13182 | specified in ARGS. ARGS may be in any of the formats handled by | |
13183 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
13184 | or disable the breakpoints/locations. */ | |
13185 | ||
c906108c | 13186 | static void |
d0fe4701 | 13187 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 13188 | { |
c906108c | 13189 | if (args == 0) |
46c6471b | 13190 | { |
43892fdf | 13191 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 13192 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
13193 | { |
13194 | if (enable) | |
13195 | enable_breakpoint (bpt); | |
13196 | else | |
13197 | disable_breakpoint (bpt); | |
13198 | } | |
46c6471b | 13199 | } |
9eaabc75 | 13200 | else |
0d381245 | 13201 | { |
cb791d59 | 13202 | std::string num = extract_arg (&args); |
9eaabc75 | 13203 | |
cb791d59 | 13204 | while (!num.empty ()) |
d248b706 | 13205 | { |
d0fe4701 | 13206 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 13207 | |
cc638e86 PA |
13208 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
13209 | ||
13210 | if (bp_loc_range.first == bp_loc_range.second | |
13211 | && bp_loc_range.first == 0) | |
d0fe4701 | 13212 | { |
cc638e86 PA |
13213 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
13214 | map_breakpoint_number_range (bp_num_range, | |
13215 | enable | |
13216 | ? enable_breakpoint | |
13217 | : disable_breakpoint); | |
13218 | } | |
13219 | else | |
13220 | { | |
13221 | /* Handle breakpoint ids with formats 'x.y' or | |
13222 | 'x.y-z'. */ | |
13223 | enable_disable_breakpoint_location_range | |
13224 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 13225 | } |
9eaabc75 | 13226 | num = extract_arg (&args); |
d248b706 | 13227 | } |
0d381245 | 13228 | } |
c906108c SS |
13229 | } |
13230 | ||
d0fe4701 XR |
13231 | /* The disable command disables the specified breakpoints/locations |
13232 | (or all defined breakpoints) so they're no longer effective in | |
13233 | stopping the inferior. ARGS may be in any of the forms defined in | |
13234 | extract_bp_number_and_location. */ | |
13235 | ||
13236 | static void | |
13237 | disable_command (const char *args, int from_tty) | |
13238 | { | |
13239 | enable_disable_command (args, from_tty, false); | |
13240 | } | |
13241 | ||
c906108c | 13242 | static void |
816338b5 SS |
13243 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
13244 | int count) | |
c906108c | 13245 | { |
afe38095 | 13246 | int target_resources_ok; |
c906108c SS |
13247 | |
13248 | if (bpt->type == bp_hardware_breakpoint) | |
13249 | { | |
13250 | int i; | |
c5aa993b | 13251 | i = hw_breakpoint_used_count (); |
53a5351d | 13252 | target_resources_ok = |
d92524f1 | 13253 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 13254 | i + 1, 0); |
c906108c | 13255 | if (target_resources_ok == 0) |
8a3fe4f8 | 13256 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 13257 | else if (target_resources_ok < 0) |
8a3fe4f8 | 13258 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
13259 | } |
13260 | ||
cc60f2e3 | 13261 | if (is_watchpoint (bpt)) |
c906108c | 13262 | { |
d07205c2 | 13263 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 13264 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 13265 | |
a70b8144 | 13266 | try |
c906108c | 13267 | { |
3a5c3e22 PA |
13268 | struct watchpoint *w = (struct watchpoint *) bpt; |
13269 | ||
1e718ff1 TJB |
13270 | orig_enable_state = bpt->enable_state; |
13271 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 13272 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 13273 | } |
230d2906 | 13274 | catch (const gdb_exception &e) |
c5aa993b | 13275 | { |
1e718ff1 | 13276 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
13277 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
13278 | bpt->number); | |
13279 | return; | |
c5aa993b | 13280 | } |
c906108c | 13281 | } |
0101ce28 | 13282 | |
b775012e LM |
13283 | bpt->enable_state = bp_enabled; |
13284 | ||
13285 | /* Mark breakpoint locations modified. */ | |
13286 | mark_breakpoint_modified (bpt); | |
13287 | ||
d248b706 KY |
13288 | if (target_supports_enable_disable_tracepoint () |
13289 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13290 | { | |
40cb8ca5 | 13291 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13292 | target_enable_tracepoint (location); |
13293 | } | |
13294 | ||
b4c291bb | 13295 | bpt->disposition = disposition; |
816338b5 | 13296 | bpt->enable_count = count; |
44702360 | 13297 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 13298 | |
76727919 | 13299 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13300 | } |
13301 | ||
fe3f5fa8 | 13302 | |
c906108c | 13303 | void |
fba45db2 | 13304 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 13305 | { |
816338b5 | 13306 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
13307 | } |
13308 | ||
d0fe4701 XR |
13309 | /* The enable command enables the specified breakpoints/locations (or |
13310 | all defined breakpoints) so they once again become (or continue to | |
13311 | be) effective in stopping the inferior. ARGS may be in any of the | |
13312 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 13313 | |
c906108c | 13314 | static void |
981a3fb3 | 13315 | enable_command (const char *args, int from_tty) |
c906108c | 13316 | { |
d0fe4701 | 13317 | enable_disable_command (args, from_tty, true); |
c906108c SS |
13318 | } |
13319 | ||
c906108c | 13320 | static void |
4495129a | 13321 | enable_once_command (const char *args, int from_tty) |
c906108c | 13322 | { |
48649e1b TT |
13323 | map_breakpoint_numbers |
13324 | (args, [&] (breakpoint *b) | |
13325 | { | |
13326 | iterate_over_related_breakpoints | |
13327 | (b, [&] (breakpoint *bpt) | |
13328 | { | |
13329 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
13330 | }); | |
13331 | }); | |
816338b5 SS |
13332 | } |
13333 | ||
13334 | static void | |
4495129a | 13335 | enable_count_command (const char *args, int from_tty) |
816338b5 | 13336 | { |
b9d61307 SM |
13337 | int count; |
13338 | ||
13339 | if (args == NULL) | |
13340 | error_no_arg (_("hit count")); | |
13341 | ||
13342 | count = get_number (&args); | |
816338b5 | 13343 | |
48649e1b TT |
13344 | map_breakpoint_numbers |
13345 | (args, [&] (breakpoint *b) | |
13346 | { | |
13347 | iterate_over_related_breakpoints | |
13348 | (b, [&] (breakpoint *bpt) | |
13349 | { | |
13350 | enable_breakpoint_disp (bpt, disp_disable, count); | |
13351 | }); | |
13352 | }); | |
c906108c SS |
13353 | } |
13354 | ||
c906108c | 13355 | static void |
4495129a | 13356 | enable_delete_command (const char *args, int from_tty) |
c906108c | 13357 | { |
48649e1b TT |
13358 | map_breakpoint_numbers |
13359 | (args, [&] (breakpoint *b) | |
13360 | { | |
13361 | iterate_over_related_breakpoints | |
13362 | (b, [&] (breakpoint *bpt) | |
13363 | { | |
13364 | enable_breakpoint_disp (bpt, disp_del, 1); | |
13365 | }); | |
13366 | }); | |
c906108c SS |
13367 | } |
13368 | \f | |
1f3b5d1b PP |
13369 | /* Invalidate last known value of any hardware watchpoint if |
13370 | the memory which that value represents has been written to by | |
13371 | GDB itself. */ | |
13372 | ||
13373 | static void | |
8de0566d YQ |
13374 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
13375 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
13376 | const bfd_byte *data) |
13377 | { | |
43892fdf | 13378 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 13379 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 13380 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 13381 | { |
3a5c3e22 | 13382 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 13383 | |
850645cf | 13384 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 13385 | { |
40cb8ca5 | 13386 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
13387 | if (loc->loc_type == bp_loc_hardware_watchpoint |
13388 | && loc->address + loc->length > addr | |
13389 | && addr + len > loc->address) | |
13390 | { | |
3a5c3e22 | 13391 | wp->val = NULL; |
4c1d86d9 | 13392 | wp->val_valid = false; |
3a5c3e22 PA |
13393 | } |
13394 | } | |
1f3b5d1b PP |
13395 | } |
13396 | } | |
13397 | ||
8181d85f DJ |
13398 | /* Create and insert a breakpoint for software single step. */ |
13399 | ||
13400 | void | |
6c95b8df | 13401 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 13402 | const address_space *aspace, |
4a64f543 | 13403 | CORE_ADDR next_pc) |
8181d85f | 13404 | { |
7c16b83e PA |
13405 | struct thread_info *tp = inferior_thread (); |
13406 | struct symtab_and_line sal; | |
13407 | CORE_ADDR pc = next_pc; | |
8181d85f | 13408 | |
34b7e8a6 PA |
13409 | if (tp->control.single_step_breakpoints == NULL) |
13410 | { | |
13411 | tp->control.single_step_breakpoints | |
5d5658a1 | 13412 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 13413 | } |
8181d85f | 13414 | |
7c16b83e PA |
13415 | sal = find_pc_line (pc, 0); |
13416 | sal.pc = pc; | |
13417 | sal.section = find_pc_overlay (pc); | |
13418 | sal.explicit_pc = 1; | |
06615628 | 13419 | tp->control.single_step_breakpoints->add_location (sal); |
8181d85f | 13420 | |
7c16b83e | 13421 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
13422 | } |
13423 | ||
93f9a11f YQ |
13424 | /* Insert single step breakpoints according to the current state. */ |
13425 | ||
13426 | int | |
13427 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
13428 | { | |
f5ea389a | 13429 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 13430 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 13431 | |
f5ea389a | 13432 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 13433 | |
a0ff9e1a | 13434 | if (!next_pcs.empty ()) |
93f9a11f | 13435 | { |
f5ea389a | 13436 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 13437 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 13438 | |
a0ff9e1a | 13439 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
13440 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
13441 | ||
93f9a11f YQ |
13442 | return 1; |
13443 | } | |
13444 | else | |
13445 | return 0; | |
13446 | } | |
13447 | ||
34b7e8a6 | 13448 | /* See breakpoint.h. */ |
f02253f1 HZ |
13449 | |
13450 | int | |
7c16b83e | 13451 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 13452 | const address_space *aspace, |
7c16b83e | 13453 | CORE_ADDR pc) |
1aafd4da | 13454 | { |
40cb8ca5 | 13455 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
13456 | if (loc->inserted |
13457 | && breakpoint_location_address_match (loc, aspace, pc)) | |
13458 | return 1; | |
1aafd4da | 13459 | |
7c16b83e | 13460 | return 0; |
ef370185 JB |
13461 | } |
13462 | ||
13463 | /* Check whether a software single-step breakpoint is inserted at | |
13464 | PC. */ | |
13465 | ||
13466 | int | |
accd0bcd | 13467 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
13468 | CORE_ADDR pc) |
13469 | { | |
43892fdf | 13470 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
13471 | { |
13472 | if (bpt->type == bp_single_step | |
13473 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
13474 | return 1; | |
13475 | } | |
13476 | return 0; | |
1aafd4da UW |
13477 | } |
13478 | ||
1042e4c0 SS |
13479 | /* Tracepoint-specific operations. */ |
13480 | ||
13481 | /* Set tracepoint count to NUM. */ | |
13482 | static void | |
13483 | set_tracepoint_count (int num) | |
13484 | { | |
13485 | tracepoint_count = num; | |
4fa62494 | 13486 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
13487 | } |
13488 | ||
70221824 | 13489 | static void |
0b39b52e | 13490 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 13491 | { |
ffc2605c TT |
13492 | event_location_up location = string_to_event_location (&arg, |
13493 | current_language); | |
bac7c5cf GB |
13494 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
13495 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 13496 | |
558a9d82 | 13497 | create_breakpoint (get_current_arch (), |
ffc2605c | 13498 | location.get (), |
10a636cc | 13499 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13500 | 0 /* tempflag */, |
13501 | bp_tracepoint /* type_wanted */, | |
13502 | 0 /* Ignore count */, | |
13503 | pending_break_support, | |
13504 | ops, | |
13505 | from_tty, | |
13506 | 1 /* enabled */, | |
13507 | 0 /* internal */, 0); | |
1042e4c0 SS |
13508 | } |
13509 | ||
70221824 | 13510 | static void |
0b39b52e | 13511 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 13512 | { |
ffc2605c TT |
13513 | event_location_up location = string_to_event_location (&arg, |
13514 | current_language); | |
558a9d82 | 13515 | create_breakpoint (get_current_arch (), |
ffc2605c | 13516 | location.get (), |
10a636cc | 13517 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13518 | 0 /* tempflag */, |
13519 | bp_fast_tracepoint /* type_wanted */, | |
13520 | 0 /* Ignore count */, | |
13521 | pending_break_support, | |
a0cd5f08 | 13522 | &base_breakpoint_ops, |
558a9d82 YQ |
13523 | from_tty, |
13524 | 1 /* enabled */, | |
13525 | 0 /* internal */, 0); | |
0fb4aa4b PA |
13526 | } |
13527 | ||
13528 | /* strace command implementation. Creates a static tracepoint. */ | |
13529 | ||
70221824 | 13530 | static void |
0b39b52e | 13531 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 13532 | { |
a678887d | 13533 | const struct breakpoint_ops *ops; |
ffc2605c | 13534 | event_location_up location; |
7b572efb | 13535 | enum bptype type; |
983af33b SDJ |
13536 | |
13537 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13538 | or with a normal static tracepoint. */ | |
61012eef | 13539 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
13540 | { |
13541 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 13542 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
7b572efb | 13543 | type = bp_static_marker_tracepoint; |
f00aae0f | 13544 | } |
983af33b | 13545 | else |
f00aae0f | 13546 | { |
a0cd5f08 | 13547 | ops = &base_breakpoint_ops; |
f00aae0f | 13548 | location = string_to_event_location (&arg, current_language); |
7b572efb | 13549 | type = bp_static_tracepoint; |
f00aae0f | 13550 | } |
983af33b | 13551 | |
558a9d82 | 13552 | create_breakpoint (get_current_arch (), |
ffc2605c | 13553 | location.get (), |
10a636cc | 13554 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 | 13555 | 0 /* tempflag */, |
7b572efb | 13556 | type /* type_wanted */, |
558a9d82 YQ |
13557 | 0 /* Ignore count */, |
13558 | pending_break_support, | |
13559 | ops, | |
13560 | from_tty, | |
13561 | 1 /* enabled */, | |
13562 | 0 /* internal */, 0); | |
7a697b8d SS |
13563 | } |
13564 | ||
409873ef SS |
13565 | /* Set up a fake reader function that gets command lines from a linked |
13566 | list that was acquired during tracepoint uploading. */ | |
13567 | ||
13568 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13569 | static int next_cmd; |
409873ef SS |
13570 | |
13571 | static char * | |
13572 | read_uploaded_action (void) | |
13573 | { | |
a18ba4e4 | 13574 | char *rslt = nullptr; |
409873ef | 13575 | |
a18ba4e4 SM |
13576 | if (next_cmd < this_utp->cmd_strings.size ()) |
13577 | { | |
67aa1f3c | 13578 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
13579 | next_cmd++; |
13580 | } | |
409873ef SS |
13581 | |
13582 | return rslt; | |
13583 | } | |
13584 | ||
00bf0b85 SS |
13585 | /* Given information about a tracepoint as recorded on a target (which |
13586 | can be either a live system or a trace file), attempt to create an | |
13587 | equivalent GDB tracepoint. This is not a reliable process, since | |
13588 | the target does not necessarily have all the information used when | |
13589 | the tracepoint was originally defined. */ | |
13590 | ||
d9b3f62e | 13591 | struct tracepoint * |
00bf0b85 | 13592 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13593 | { |
f2fc3015 TT |
13594 | const char *addr_str; |
13595 | char small_buf[100]; | |
d9b3f62e | 13596 | struct tracepoint *tp; |
fd9b8c24 | 13597 | |
409873ef | 13598 | if (utp->at_string) |
67aa1f3c | 13599 | addr_str = utp->at_string.get (); |
409873ef SS |
13600 | else |
13601 | { | |
13602 | /* In the absence of a source location, fall back to raw | |
13603 | address. Since there is no way to confirm that the address | |
13604 | means the same thing as when the trace was started, warn the | |
13605 | user. */ | |
3e43a32a MS |
13606 | warning (_("Uploaded tracepoint %d has no " |
13607 | "source location, using raw address"), | |
409873ef | 13608 | utp->number); |
8c042590 | 13609 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
13610 | addr_str = small_buf; |
13611 | } | |
13612 | ||
13613 | /* There's not much we can do with a sequence of bytecodes. */ | |
13614 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13615 | warning (_("Uploaded tracepoint %d condition " |
13616 | "has no source form, ignoring it"), | |
409873ef | 13617 | utp->number); |
d5551862 | 13618 | |
ffc2605c TT |
13619 | event_location_up location = string_to_event_location (&addr_str, |
13620 | current_language); | |
8cdf0e15 | 13621 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 13622 | location.get (), |
67aa1f3c | 13623 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 13624 | false /* force_condition */, |
e7e0cddf | 13625 | 0 /* parse cond/thread */, |
8cdf0e15 | 13626 | 0 /* tempflag */, |
0fb4aa4b | 13627 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13628 | 0 /* Ignore count */, |
13629 | pending_break_support, | |
a0cd5f08 | 13630 | &base_breakpoint_ops, |
8cdf0e15 | 13631 | 0 /* from_tty */, |
84f4c1fe | 13632 | utp->enabled /* enabled */, |
44f238bb PA |
13633 | 0 /* internal */, |
13634 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 13635 | return NULL; |
fd9b8c24 | 13636 | |
409873ef | 13637 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13638 | tp = get_tracepoint (tracepoint_count); |
13639 | gdb_assert (tp != NULL); | |
d5551862 | 13640 | |
00bf0b85 SS |
13641 | if (utp->pass > 0) |
13642 | { | |
8c042590 | 13643 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 13644 | tp->number); |
00bf0b85 | 13645 | |
409873ef | 13646 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13647 | } |
13648 | ||
409873ef SS |
13649 | /* If we have uploaded versions of the original commands, set up a |
13650 | special-purpose "reader" function and call the usual command line | |
13651 | reader, then pass the result to the breakpoint command-setting | |
13652 | function. */ | |
a18ba4e4 | 13653 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 13654 | { |
12973681 | 13655 | counted_command_line cmd_list; |
00bf0b85 | 13656 | |
409873ef | 13657 | this_utp = utp; |
3149d8c1 | 13658 | next_cmd = 0; |
d5551862 | 13659 | |
60b3cef2 | 13660 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 13661 | |
c1fc2657 | 13662 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 13663 | } |
a18ba4e4 SM |
13664 | else if (!utp->actions.empty () |
13665 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
13666 | warning (_("Uploaded tracepoint %d actions " |
13667 | "have no source form, ignoring them"), | |
409873ef | 13668 | utp->number); |
00bf0b85 | 13669 | |
f196051f | 13670 | /* Copy any status information that might be available. */ |
c1fc2657 | 13671 | tp->hit_count = utp->hit_count; |
f196051f SS |
13672 | tp->traceframe_usage = utp->traceframe_usage; |
13673 | ||
00bf0b85 | 13674 | return tp; |
d9b3f62e | 13675 | } |
00bf0b85 | 13676 | |
1042e4c0 SS |
13677 | /* Print information on tracepoint number TPNUM_EXP, or all if |
13678 | omitted. */ | |
13679 | ||
13680 | static void | |
1d12d88f | 13681 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 13682 | { |
79a45e25 | 13683 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13684 | int num_printed; |
1042e4c0 | 13685 | |
5c458ae8 | 13686 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
13687 | |
13688 | if (num_printed == 0) | |
1042e4c0 | 13689 | { |
e5a67952 | 13690 | if (args == NULL || *args == '\0') |
112e8700 | 13691 | uiout->message ("No tracepoints.\n"); |
d77f58be | 13692 | else |
112e8700 | 13693 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13694 | } |
ad443146 SS |
13695 | |
13696 | default_collect_info (); | |
1042e4c0 SS |
13697 | } |
13698 | ||
4a64f543 | 13699 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13700 | Not supported by all targets. */ |
13701 | static void | |
5fed81ff | 13702 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13703 | { |
13704 | enable_command (args, from_tty); | |
13705 | } | |
13706 | ||
4a64f543 | 13707 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13708 | Not supported by all targets. */ |
13709 | static void | |
5fed81ff | 13710 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
13711 | { |
13712 | disable_command (args, from_tty); | |
13713 | } | |
13714 | ||
4a64f543 | 13715 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 13716 | static void |
4495129a | 13717 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 13718 | { |
1042e4c0 SS |
13719 | dont_repeat (); |
13720 | ||
13721 | if (arg == 0) | |
13722 | { | |
13723 | int breaks_to_delete = 0; | |
13724 | ||
13725 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
13726 | Do not delete internal or call-dummy breakpoints, these |
13727 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 13728 | argument. */ |
f6d17b2b | 13729 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 13730 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
13731 | { |
13732 | breaks_to_delete = 1; | |
13733 | break; | |
13734 | } | |
1042e4c0 SS |
13735 | |
13736 | /* Ask user only if there are some breakpoints to delete. */ | |
13737 | if (!from_tty | |
13738 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
13739 | { | |
1428b37a | 13740 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 13741 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 13742 | delete_breakpoint (b); |
1042e4c0 SS |
13743 | } |
13744 | } | |
13745 | else | |
48649e1b | 13746 | map_breakpoint_numbers |
b926417a | 13747 | (arg, [&] (breakpoint *br) |
48649e1b | 13748 | { |
b926417a | 13749 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13750 | }); |
1042e4c0 SS |
13751 | } |
13752 | ||
197f0a60 TT |
13753 | /* Helper function for trace_pass_command. */ |
13754 | ||
13755 | static void | |
d9b3f62e | 13756 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 13757 | { |
d9b3f62e | 13758 | tp->pass_count = count; |
76727919 | 13759 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 | 13760 | if (from_tty) |
6cb06a8c TT |
13761 | gdb_printf (_("Setting tracepoint %d's passcount to %d\n"), |
13762 | tp->number, count); | |
197f0a60 TT |
13763 | } |
13764 | ||
1042e4c0 SS |
13765 | /* Set passcount for tracepoint. |
13766 | ||
13767 | First command argument is passcount, second is tracepoint number. | |
13768 | If tracepoint number omitted, apply to most recently defined. | |
13769 | Also accepts special argument "all". */ | |
13770 | ||
13771 | static void | |
0b39b52e | 13772 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 13773 | { |
d9b3f62e | 13774 | struct tracepoint *t1; |
0b39b52e | 13775 | ULONGEST count; |
1042e4c0 SS |
13776 | |
13777 | if (args == 0 || *args == 0) | |
3e43a32a MS |
13778 | error (_("passcount command requires an " |
13779 | "argument (count + optional TP num)")); | |
1042e4c0 | 13780 | |
0b39b52e | 13781 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 13782 | |
529480d0 | 13783 | args = skip_spaces (args); |
1042e4c0 SS |
13784 | if (*args && strncasecmp (args, "all", 3) == 0) |
13785 | { | |
13786 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
13787 | if (*args) |
13788 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 13789 | |
f6d17b2b | 13790 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
13791 | { |
13792 | t1 = (struct tracepoint *) b; | |
13793 | trace_pass_set_count (t1, count, from_tty); | |
13794 | } | |
197f0a60 TT |
13795 | } |
13796 | else if (*args == '\0') | |
1042e4c0 | 13797 | { |
5fa1d40e | 13798 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 13799 | if (t1) |
197f0a60 TT |
13800 | trace_pass_set_count (t1, count, from_tty); |
13801 | } | |
13802 | else | |
13803 | { | |
bfd28288 PA |
13804 | number_or_range_parser parser (args); |
13805 | while (!parser.finished ()) | |
1042e4c0 | 13806 | { |
bfd28288 | 13807 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
13808 | if (t1) |
13809 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
13810 | } |
13811 | } | |
1042e4c0 SS |
13812 | } |
13813 | ||
d9b3f62e | 13814 | struct tracepoint * |
1042e4c0 SS |
13815 | get_tracepoint (int num) |
13816 | { | |
f6d17b2b | 13817 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 13818 | if (t->number == num) |
d9b3f62e | 13819 | return (struct tracepoint *) t; |
1042e4c0 SS |
13820 | |
13821 | return NULL; | |
13822 | } | |
13823 | ||
d5551862 SS |
13824 | /* Find the tracepoint with the given target-side number (which may be |
13825 | different from the tracepoint number after disconnecting and | |
13826 | reconnecting). */ | |
13827 | ||
d9b3f62e | 13828 | struct tracepoint * |
d5551862 SS |
13829 | get_tracepoint_by_number_on_target (int num) |
13830 | { | |
f6d17b2b | 13831 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
13832 | { |
13833 | struct tracepoint *t = (struct tracepoint *) b; | |
13834 | ||
13835 | if (t->number_on_target == num) | |
13836 | return t; | |
13837 | } | |
d5551862 SS |
13838 | |
13839 | return NULL; | |
13840 | } | |
13841 | ||
1042e4c0 | 13842 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 13843 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
13844 | If the argument is missing, the most recent tracepoint |
13845 | (tracepoint_count) is returned. */ | |
13846 | ||
d9b3f62e | 13847 | struct tracepoint * |
0b39b52e | 13848 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 13849 | number_or_range_parser *parser) |
1042e4c0 | 13850 | { |
1042e4c0 | 13851 | int tpnum; |
0b39b52e | 13852 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 13853 | |
bfd28288 | 13854 | if (parser != NULL) |
197f0a60 | 13855 | { |
bfd28288 PA |
13856 | gdb_assert (!parser->finished ()); |
13857 | tpnum = parser->get_number (); | |
197f0a60 TT |
13858 | } |
13859 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 13860 | tpnum = tracepoint_count; |
1042e4c0 | 13861 | else |
197f0a60 | 13862 | tpnum = get_number (arg); |
1042e4c0 SS |
13863 | |
13864 | if (tpnum <= 0) | |
13865 | { | |
13866 | if (instring && *instring) | |
6cb06a8c TT |
13867 | gdb_printf (_("bad tracepoint number at or near '%s'\n"), |
13868 | instring); | |
1042e4c0 | 13869 | else |
6cb06a8c | 13870 | gdb_printf (_("No previous tracepoint\n")); |
1042e4c0 SS |
13871 | return NULL; |
13872 | } | |
13873 | ||
f6d17b2b | 13874 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 13875 | if (t->number == tpnum) |
d9b3f62e | 13876 | return (struct tracepoint *) t; |
1042e4c0 | 13877 | |
6cb06a8c | 13878 | gdb_printf ("No tracepoint number %d.\n", tpnum); |
1042e4c0 SS |
13879 | return NULL; |
13880 | } | |
13881 | ||
d9b3f62e | 13882 | void |
04d0163c | 13883 | breakpoint::print_recreate_thread (struct ui_file *fp) const |
d9b3f62e | 13884 | { |
04d0163c TT |
13885 | if (thread != -1) |
13886 | gdb_printf (fp, " thread %d", thread); | |
d9b3f62e | 13887 | |
04d0163c TT |
13888 | if (task != 0) |
13889 | gdb_printf (fp, " task %d", task); | |
d9b3f62e | 13890 | |
6cb06a8c | 13891 | gdb_printf (fp, "\n"); |
d9b3f62e PA |
13892 | } |
13893 | ||
6149aea9 PA |
13894 | /* Save information on user settable breakpoints (watchpoints, etc) to |
13895 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
13896 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 13897 | true. */ |
6149aea9 | 13898 | |
1042e4c0 | 13899 | static void |
4495129a | 13900 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 13901 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 13902 | { |
6149aea9 | 13903 | int any = 0; |
6149aea9 | 13904 | int extra_trace_bits = 0; |
1042e4c0 | 13905 | |
6149aea9 PA |
13906 | if (filename == 0 || *filename == 0) |
13907 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
13908 | |
13909 | /* See if we have anything to save. */ | |
43892fdf | 13910 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
13911 | { |
13912 | /* Skip internal and momentary breakpoints. */ | |
13913 | if (!user_breakpoint_p (tp)) | |
13914 | continue; | |
6149aea9 | 13915 | |
01add95b SM |
13916 | /* If we have a filter, only save the breakpoints it accepts. */ |
13917 | if (filter && !filter (tp)) | |
13918 | continue; | |
6149aea9 | 13919 | |
01add95b | 13920 | any = 1; |
6149aea9 | 13921 | |
01add95b SM |
13922 | if (is_tracepoint (tp)) |
13923 | { | |
13924 | extra_trace_bits = 1; | |
6149aea9 | 13925 | |
01add95b SM |
13926 | /* We can stop searching. */ |
13927 | break; | |
13928 | } | |
13929 | } | |
6149aea9 PA |
13930 | |
13931 | if (!any) | |
1042e4c0 | 13932 | { |
6149aea9 | 13933 | warning (_("Nothing to save.")); |
1042e4c0 SS |
13934 | return; |
13935 | } | |
13936 | ||
ee0c3293 | 13937 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
13938 | |
13939 | stdio_file fp; | |
13940 | ||
ee0c3293 | 13941 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 13942 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 13943 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 13944 | |
6149aea9 | 13945 | if (extra_trace_bits) |
d7e74731 | 13946 | save_trace_state_variables (&fp); |
8bf6485c | 13947 | |
43892fdf | 13948 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
13949 | { |
13950 | /* Skip internal and momentary breakpoints. */ | |
13951 | if (!user_breakpoint_p (tp)) | |
13952 | continue; | |
8bf6485c | 13953 | |
01add95b SM |
13954 | /* If we have a filter, only save the breakpoints it accepts. */ |
13955 | if (filter && !filter (tp)) | |
13956 | continue; | |
6149aea9 | 13957 | |
c47614fe | 13958 | tp->print_recreate (&fp); |
1042e4c0 | 13959 | |
01add95b SM |
13960 | /* Note, we can't rely on tp->number for anything, as we can't |
13961 | assume the recreated breakpoint numbers will match. Use $bpnum | |
13962 | instead. */ | |
6149aea9 | 13963 | |
01add95b | 13964 | if (tp->cond_string) |
6f781ee3 | 13965 | fp.printf (" condition $bpnum %s\n", tp->cond_string.get ()); |
6149aea9 | 13966 | |
01add95b SM |
13967 | if (tp->ignore_count) |
13968 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 13969 | |
01add95b SM |
13970 | if (tp->type != bp_dprintf && tp->commands) |
13971 | { | |
13972 | fp.puts (" commands\n"); | |
1042e4c0 | 13973 | |
01add95b SM |
13974 | current_uiout->redirect (&fp); |
13975 | try | |
13976 | { | |
13977 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
13978 | } | |
13979 | catch (const gdb_exception &ex) | |
13980 | { | |
13981 | current_uiout->redirect (NULL); | |
13982 | throw; | |
13983 | } | |
6149aea9 | 13984 | |
01add95b SM |
13985 | current_uiout->redirect (NULL); |
13986 | fp.puts (" end\n"); | |
13987 | } | |
6149aea9 | 13988 | |
01add95b SM |
13989 | if (tp->enable_state == bp_disabled) |
13990 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 13991 | |
01add95b SM |
13992 | /* If this is a multi-location breakpoint, check if the locations |
13993 | should be individually disabled. Watchpoint locations are | |
13994 | special, and not user visible. */ | |
13995 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
13996 | { | |
13997 | int n = 1; | |
40cb8ca5 | 13998 | |
01add95b SM |
13999 | for (bp_location *loc : tp->locations ()) |
14000 | { | |
14001 | if (!loc->enabled) | |
14002 | fp.printf ("disable $bpnum.%d\n", n); | |
14003 | ||
14004 | n++; | |
14005 | } | |
14006 | } | |
14007 | } | |
8bf6485c | 14008 | |
e0700ba4 SM |
14009 | if (extra_trace_bits && !default_collect.empty ()) |
14010 | fp.printf ("set default-collect %s\n", default_collect.c_str ()); | |
8bf6485c | 14011 | |
1042e4c0 | 14012 | if (from_tty) |
6cb06a8c | 14013 | gdb_printf (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14014 | } |
14015 | ||
14016 | /* The `save breakpoints' command. */ | |
14017 | ||
14018 | static void | |
4495129a | 14019 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14020 | { |
14021 | save_breakpoints (args, from_tty, NULL); | |
14022 | } | |
14023 | ||
14024 | /* The `save tracepoints' command. */ | |
14025 | ||
14026 | static void | |
4495129a | 14027 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14028 | { |
14029 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14030 | } |
14031 | ||
c906108c | 14032 | \f |
629500fa KS |
14033 | /* This help string is used to consolidate all the help string for specifying |
14034 | locations used by several commands. */ | |
14035 | ||
14036 | #define LOCATION_HELP_STRING \ | |
14037 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
14038 | source filename, function name, label name, and line number.\n\ | |
14039 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
14040 | function \"fact\" in the file \"factorial.c\", use\n\ | |
14041 | \"factorial.c:fact:the_top\".\n\ | |
14042 | \n\ | |
14043 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
14044 | program. Example: To specify the fourth byte past the start function\n\ | |
14045 | \"main\", use \"*main + 4\".\n\ | |
14046 | \n\ | |
14047 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
14048 | syntax to specify location parameters.\n\ | |
14049 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
14050 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
14051 | -function fact -label the_top\".\n\ |
14052 | \n\ | |
14053 | By default, a specified function is matched against the program's\n\ | |
14054 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
14055 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
14056 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
14057 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 14058 | specified name as a complete fully-qualified name instead." |
629500fa | 14059 | |
4a64f543 MS |
14060 | /* This help string is used for the break, hbreak, tbreak and thbreak |
14061 | commands. It is defined as a macro to prevent duplication. | |
14062 | COMMAND should be a string constant containing the name of the | |
14063 | command. */ | |
629500fa | 14064 | |
31e2b00f | 14065 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
14066 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
14067 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
14068 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
14069 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
14070 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
14071 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
14072 | LOCATION may be a linespec, address, or explicit location as described\n\ |
14073 | below.\n\ | |
14074 | \n\ | |
dc10affe PA |
14075 | With no LOCATION, uses current execution address of the selected\n\ |
14076 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
14077 | \n\ |
14078 | THREADNUM is the number from \"info threads\".\n\ | |
14079 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
14080 | \n\ |
14081 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
14082 | it is invalid for all current locations.\n\ | |
89549d7f | 14083 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14084 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
14085 | conditions are different.\n\ | |
31e2b00f AS |
14086 | \n\ |
14087 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
14088 | ||
44feb3ce TT |
14089 | /* List of subcommands for "catch". */ |
14090 | static struct cmd_list_element *catch_cmdlist; | |
14091 | ||
14092 | /* List of subcommands for "tcatch". */ | |
14093 | static struct cmd_list_element *tcatch_cmdlist; | |
14094 | ||
9ac4176b | 14095 | void |
a121b7c1 | 14096 | add_catch_command (const char *name, const char *docstring, |
5538b03c | 14097 | cmd_func_ftype *func, |
625e8578 | 14098 | completer_ftype *completer, |
44feb3ce TT |
14099 | void *user_data_catch, |
14100 | void *user_data_tcatch) | |
14101 | { | |
14102 | struct cmd_list_element *command; | |
14103 | ||
0450cc4c | 14104 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14105 | &catch_cmdlist); |
5538b03c | 14106 | command->func = func; |
0f8e2034 | 14107 | command->set_context (user_data_catch); |
a96d9b2e | 14108 | set_cmd_completer (command, completer); |
44feb3ce | 14109 | |
0450cc4c | 14110 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14111 | &tcatch_cmdlist); |
5538b03c | 14112 | command->func = func; |
0f8e2034 | 14113 | command->set_context (user_data_tcatch); |
a96d9b2e | 14114 | set_cmd_completer (command, completer); |
44feb3ce TT |
14115 | } |
14116 | ||
0574c78f GB |
14117 | /* Zero if any of the breakpoint's locations could be a location where |
14118 | functions have been inlined, nonzero otherwise. */ | |
14119 | ||
14120 | static int | |
14121 | is_non_inline_function (struct breakpoint *b) | |
14122 | { | |
14123 | /* The shared library event breakpoint is set on the address of a | |
14124 | non-inline function. */ | |
14125 | if (b->type == bp_shlib_event) | |
14126 | return 1; | |
14127 | ||
14128 | return 0; | |
14129 | } | |
14130 | ||
14131 | /* Nonzero if the specified PC cannot be a location where functions | |
14132 | have been inlined. */ | |
14133 | ||
14134 | int | |
accd0bcd | 14135 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
c272a98c | 14136 | const target_waitstatus &ws) |
0574c78f | 14137 | { |
43892fdf | 14138 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
14139 | { |
14140 | if (!is_non_inline_function (b)) | |
14141 | continue; | |
14142 | ||
40cb8ca5 | 14143 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
14144 | { |
14145 | if (!bl->shlib_disabled | |
09ac7c10 | 14146 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
14147 | return 1; |
14148 | } | |
14149 | } | |
14150 | ||
14151 | return 0; | |
14152 | } | |
14153 | ||
2f202fde JK |
14154 | /* Remove any references to OBJFILE which is going to be freed. */ |
14155 | ||
14156 | void | |
14157 | breakpoint_free_objfile (struct objfile *objfile) | |
14158 | { | |
48d7020b | 14159 | for (bp_location *loc : all_bp_locations ()) |
3c86fae3 | 14160 | if (loc->symtab != NULL && loc->symtab->compunit ()->objfile () == objfile) |
2f202fde JK |
14161 | loc->symtab = NULL; |
14162 | } | |
14163 | ||
8bfd80db YQ |
14164 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
14165 | ||
14166 | static struct cmd_list_element *enablebreaklist = NULL; | |
14167 | ||
8588b356 SM |
14168 | /* See breakpoint.h. */ |
14169 | ||
14170 | cmd_list_element *commands_cmd_element = nullptr; | |
14171 | ||
6c265988 | 14172 | void _initialize_breakpoint (); |
c906108c | 14173 | void |
6c265988 | 14174 | _initialize_breakpoint () |
c906108c SS |
14175 | { |
14176 | struct cmd_list_element *c; | |
14177 | ||
c90e7d63 SM |
14178 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
14179 | "breakpoint"); | |
14180 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
14181 | "breakpoint"); | |
14182 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
14183 | "breakpoint"); | |
84acb35a | 14184 | |
c906108c SS |
14185 | breakpoint_chain = 0; |
14186 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
14187 | before a breakpoint is set. */ | |
14188 | breakpoint_count = 0; | |
14189 | ||
1042e4c0 SS |
14190 | tracepoint_count = 0; |
14191 | ||
1bedd215 AC |
14192 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
14193 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
14194 | Usage is `ignore N COUNT'.")); | |
c906108c | 14195 | |
8588b356 SM |
14196 | commands_cmd_element = add_com ("commands", class_breakpoint, |
14197 | commands_command, _("\ | |
18da0c51 MG |
14198 | Set commands to be executed when the given breakpoints are hit.\n\ |
14199 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
14200 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
14201 | (e.g. `5-7').\n\ | |
c906108c SS |
14202 | With no argument, the targeted breakpoint is the last one set.\n\ |
14203 | The commands themselves follow starting on the next line.\n\ | |
14204 | Type a line containing \"end\" to indicate the end of them.\n\ | |
14205 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 14206 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 14207 | |
b1d4d8d1 TBA |
14208 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
14209 | static std::string condition_command_help | |
14210 | = gdb::option::build_help (_("\ | |
1bedd215 | 14211 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 14212 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 14213 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
14214 | \n\ |
14215 | Options:\n\ | |
14216 | %OPTIONS%"), cc_opts); | |
14217 | ||
14218 | c = add_com ("condition", class_breakpoint, condition_command, | |
14219 | condition_command_help.c_str ()); | |
14220 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 14221 | |
1bedd215 | 14222 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 14223 | Set a temporary breakpoint.\n\ |
c906108c SS |
14224 | Like \"break\" except the breakpoint is only temporary,\n\ |
14225 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
14226 | by using \"enable delete\" on the breakpoint number.\n\ |
14227 | \n" | |
14228 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 14229 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 14230 | |
1bedd215 | 14231 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 14232 | Set a hardware assisted breakpoint.\n\ |
c906108c | 14233 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
14234 | some target hardware may not have this support.\n\ |
14235 | \n" | |
14236 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 14237 | set_cmd_completer (c, location_completer); |
c906108c | 14238 | |
1bedd215 | 14239 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 14240 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 14241 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
14242 | so it will be deleted when hit.\n\ |
14243 | \n" | |
14244 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 14245 | set_cmd_completer (c, location_completer); |
c906108c | 14246 | |
3947f654 SM |
14247 | cmd_list_element *enable_cmd |
14248 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
14249 | Enable all or some breakpoints.\n\ |
14250 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14251 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14252 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
14253 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 14254 | With a subcommand you can enable temporarily."), |
3947f654 | 14255 | &enablelist, 1, &cmdlist); |
c906108c | 14256 | |
3947f654 | 14257 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 14258 | |
84951ab5 | 14259 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
14260 | Enable all or some breakpoints.\n\ |
14261 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14262 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14263 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 14264 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 14265 | &enablebreaklist, 1, &enablelist); |
c906108c | 14266 | |
1a966eab | 14267 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14268 | Enable some breakpoints for one hit.\n\ |
14269 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 14270 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
14271 | &enablebreaklist); |
14272 | ||
1a966eab | 14273 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14274 | Enable some breakpoints and delete when hit.\n\ |
14275 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 14276 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14277 | &enablebreaklist); |
14278 | ||
816338b5 | 14279 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
14280 | Enable some breakpoints for COUNT hits.\n\ |
14281 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14282 | If a breakpoint is hit while enabled in this fashion,\n\ |
14283 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
14284 | &enablebreaklist); | |
14285 | ||
1a966eab | 14286 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14287 | Enable some breakpoints and delete when hit.\n\ |
14288 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 14289 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14290 | &enablelist); |
14291 | ||
1a966eab | 14292 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14293 | Enable some breakpoints for one hit.\n\ |
14294 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 14295 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
14296 | &enablelist); |
14297 | ||
14298 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
14299 | Enable some breakpoints for COUNT hits.\n\ |
14300 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14301 | If a breakpoint is hit while enabled in this fashion,\n\ |
14302 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
14303 | &enablelist); |
14304 | ||
3947f654 SM |
14305 | cmd_list_element *disable_cmd |
14306 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
14307 | Disable all or some breakpoints.\n\ |
14308 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14309 | Arguments are breakpoint numbers with spaces in between.\n\ |
14310 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14311 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
14312 | &disablelist, 1, &cmdlist); |
14313 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
14314 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 14315 | |
57b4f16e | 14316 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
14317 | Disable all or some breakpoints.\n\ |
14318 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14319 | Arguments are breakpoint numbers with spaces in between.\n\ |
14320 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14321 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 14322 | This command may be abbreviated \"disable\"."), |
c906108c SS |
14323 | &disablelist); |
14324 | ||
3947f654 SM |
14325 | cmd_list_element *delete_cmd |
14326 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
14327 | Delete all or some breakpoints.\n\ |
14328 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14329 | Arguments are breakpoint numbers with spaces in between.\n\ |
14330 | To delete all breakpoints, give no argument.\n\ | |
14331 | \n\ | |
590042fc | 14332 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
14333 | &deletelist, 1, &cmdlist); |
14334 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
14335 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 14336 | |
57b4f16e | 14337 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
14338 | Delete all or some breakpoints or auto-display expressions.\n\ |
14339 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14340 | Arguments are breakpoint numbers with spaces in between.\n\ |
14341 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 14342 | This command may be abbreviated \"delete\"."), |
c906108c SS |
14343 | &deletelist); |
14344 | ||
3947f654 SM |
14345 | cmd_list_element *clear_cmd |
14346 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
14347 | Clear breakpoint at specified location.\n\ |
14348 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
14349 | \n\ |
14350 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 14351 | is executing in.\n" |
89549d7f | 14352 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 14353 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 14354 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 14355 | |
3947f654 SM |
14356 | cmd_list_element *break_cmd |
14357 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 14358 | Set breakpoint at specified location.\n" |
31e2b00f | 14359 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 14360 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 14361 | |
3947f654 SM |
14362 | add_com_alias ("b", break_cmd, class_run, 1); |
14363 | add_com_alias ("br", break_cmd, class_run, 1); | |
14364 | add_com_alias ("bre", break_cmd, class_run, 1); | |
14365 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 14366 | |
e0f25bd9 SM |
14367 | cmd_list_element *info_breakpoints_cmd |
14368 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 14369 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14370 | The \"Type\" column indicates one of:\n\ |
14371 | \tbreakpoint - normal breakpoint\n\ | |
14372 | \twatchpoint - watchpoint\n\ | |
14373 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14374 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14375 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14376 | address and file/line number respectively.\n\ |
14377 | \n\ | |
14378 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14379 | are set to the address of the last breakpoint listed unless the command\n\ |
14380 | is prefixed with \"server \".\n\n\ | |
c906108c | 14381 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14382 | breakpoint set.")); |
c906108c | 14383 | |
e0f25bd9 | 14384 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 14385 | |
1a966eab AC |
14386 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14387 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14388 | The \"Type\" column indicates one of:\n\ |
14389 | \tbreakpoint - normal breakpoint\n\ | |
14390 | \twatchpoint - watchpoint\n\ | |
14391 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14392 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14393 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14394 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14395 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14396 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14397 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14398 | address and file/line number respectively.\n\ |
14399 | \n\ | |
14400 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14401 | are set to the address of the last breakpoint listed unless the command\n\ |
14402 | is prefixed with \"server \".\n\n\ | |
c906108c | 14403 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14404 | breakpoint set."), |
c906108c SS |
14405 | &maintenanceinfolist); |
14406 | ||
3b6acaee | 14407 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 14408 | Set catchpoints to catch events."), |
2f822da5 | 14409 | &catch_cmdlist, |
3b6acaee | 14410 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14411 | |
3b6acaee | 14412 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 14413 | Set temporary catchpoints to catch events."), |
2f822da5 | 14414 | &tcatch_cmdlist, |
3b6acaee | 14415 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14416 | |
a15a5258 AB |
14417 | const auto opts = make_watch_options_def_group (nullptr); |
14418 | ||
14419 | static const std::string watch_help = gdb::option::build_help (_("\ | |
14420 | Set a watchpoint for EXPRESSION.\n\ | |
14421 | Usage: watch [-location] EXPRESSION\n\ | |
14422 | \n\ | |
14423 | Options:\n\ | |
14424 | %OPTIONS%\n\ | |
14425 | \n\ | |
c906108c | 14426 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
14427 | an expression changes."), opts); |
14428 | c = add_com ("watch", class_breakpoint, watch_command, | |
14429 | watch_help.c_str ()); | |
14430 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14431 | ||
14432 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
14433 | Set a read watchpoint for EXPRESSION.\n\ | |
14434 | Usage: rwatch [-location] EXPRESSION\n\ | |
14435 | \n\ | |
14436 | Options:\n\ | |
14437 | %OPTIONS%\n\ | |
14438 | \n\ | |
14439 | A read watchpoint stops execution of your program whenever the value of\n\ | |
14440 | an expression is read."), opts); | |
14441 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
14442 | rwatch_help.c_str ()); | |
14443 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14444 | ||
14445 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
14446 | Set an access watchpoint for EXPRESSION.\n\ | |
14447 | Usage: awatch [-location] EXPRESSION\n\ | |
14448 | \n\ | |
14449 | Options:\n\ | |
14450 | %OPTIONS%\n\ | |
14451 | \n\ | |
14452 | An access watchpoint stops execution of your program whenever the value\n\ | |
14453 | of an expression is either read or written."), opts); | |
14454 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
14455 | awatch_help.c_str ()); | |
14456 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 14457 | |
11db9430 | 14458 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 14459 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14460 | |
920d2a44 AC |
14461 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14462 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14463 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14464 | &can_use_hw_watchpoints, _("\ | |
14465 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14466 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14467 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14468 | such is available. (However, any hardware watchpoints that were\n\ | |
14469 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14470 | hardware.)"), |
14471 | NULL, | |
920d2a44 | 14472 | show_can_use_hw_watchpoints, |
85c07804 | 14473 | &setlist, &showlist); |
c906108c SS |
14474 | |
14475 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14476 | |
1042e4c0 SS |
14477 | /* Tracepoint manipulation commands. */ |
14478 | ||
3947f654 SM |
14479 | cmd_list_element *trace_cmd |
14480 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 14481 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
14482 | \n" |
14483 | BREAK_ARGS_HELP ("trace") "\n\ | |
14484 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 14485 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 14486 | |
3947f654 SM |
14487 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
14488 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
14489 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
14490 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 14491 | |
7a697b8d | 14492 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 14493 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
14494 | \n" |
14495 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14496 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14497 | set_cmd_completer (c, location_completer); | |
14498 | ||
0fb4aa4b | 14499 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 14500 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
14501 | \n\ |
14502 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
14503 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
14504 | or -m MARKER_ID.\n\n\ | |
14505 | If a marker id is specified, probe the marker with that name. With\n\ | |
14506 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
14507 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
14508 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14509 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14510 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14511 | \n\ | |
14512 | CONDITION is a boolean expression.\n\ | |
89549d7f | 14513 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14514 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14515 | conditions are different.\n\ | |
0fb4aa4b PA |
14516 | \n\ |
14517 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14518 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14519 | set_cmd_completer (c, location_completer); | |
14520 | ||
e0f25bd9 SM |
14521 | cmd_list_element *info_tracepoints_cmd |
14522 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 14523 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14524 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14525 | last tracepoint set.")); | |
14526 | ||
e0f25bd9 | 14527 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 14528 | |
5e84b7ee SM |
14529 | cmd_list_element *delete_tracepoints_cmd |
14530 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
14531 | Delete specified tracepoints.\n\ |
14532 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14533 | No argument means delete all tracepoints."), | |
14534 | &deletelist); | |
5e84b7ee | 14535 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
14536 | |
14537 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14538 | Disable specified tracepoints.\n\ | |
14539 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14540 | No argument means disable all tracepoints."), | |
14541 | &disablelist); | |
14542 | deprecate_cmd (c, "disable"); | |
14543 | ||
14544 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14545 | Enable specified tracepoints.\n\ | |
14546 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14547 | No argument means enable all tracepoints."), | |
14548 | &enablelist); | |
14549 | deprecate_cmd (c, "enable"); | |
14550 | ||
14551 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14552 | Set the passcount for a tracepoint.\n\ | |
14553 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14554 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14555 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14556 | ||
0743fc83 TT |
14557 | add_basic_prefix_cmd ("save", class_breakpoint, |
14558 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 14559 | &save_cmdlist, |
0743fc83 | 14560 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
14561 | |
14562 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14563 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14564 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14565 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14566 | session to restore them."), | |
14567 | &save_cmdlist); | |
14568 | set_cmd_completer (c, filename_completer); | |
14569 | ||
3947f654 SM |
14570 | cmd_list_element *save_tracepoints_cmd |
14571 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14572 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14573 | Use the 'source' command in another debug session to restore them."), |
14574 | &save_cmdlist); | |
3947f654 | 14575 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 14576 | |
3947f654 | 14577 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
14578 | deprecate_cmd (c, "save tracepoints"); |
14579 | ||
f54bdb6d SM |
14580 | add_setshow_prefix_cmd ("breakpoint", class_maintenance, |
14581 | _("\ | |
590042fc | 14582 | Breakpoint specific settings.\n\ |
fa8d40ab | 14583 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14584 | pending breakpoint behavior."), |
f54bdb6d | 14585 | _("\ |
590042fc | 14586 | Breakpoint specific settings.\n\ |
fa8d40ab | 14587 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 14588 | pending breakpoint behavior."), |
f54bdb6d SM |
14589 | &breakpoint_set_cmdlist, &breakpoint_show_cmdlist, |
14590 | &setlist, &showlist); | |
fa8d40ab | 14591 | |
7915a72c AC |
14592 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14593 | &pending_break_support, _("\ | |
14594 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14595 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14596 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14597 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14598 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14599 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14600 | NULL, |
920d2a44 | 14601 | show_pending_break_support, |
6e1d7d6c AC |
14602 | &breakpoint_set_cmdlist, |
14603 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14604 | |
14605 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14606 | |
14607 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14608 | &automatic_hardware_breakpoints, _("\ | |
14609 | Set automatic usage of hardware breakpoints."), _("\ | |
14610 | Show automatic usage of hardware breakpoints."), _("\ | |
14611 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14612 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14613 | a warning will be emitted for such breakpoints."), | |
14614 | NULL, | |
14615 | show_automatic_hardware_breakpoints, | |
14616 | &breakpoint_set_cmdlist, | |
14617 | &breakpoint_show_cmdlist); | |
74960c60 | 14618 | |
a25a5a45 PA |
14619 | add_setshow_boolean_cmd ("always-inserted", class_support, |
14620 | &always_inserted_mode, _("\ | |
74960c60 VP |
14621 | Set mode for inserting breakpoints."), _("\ |
14622 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
14623 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
14624 | they're created, kept inserted even when execution stops, and removed\n\ | |
14625 | only when the user deletes them. When this mode is off (the default),\n\ | |
14626 | breakpoints are inserted only when execution continues, and removed\n\ | |
14627 | when execution stops."), | |
72d0e2c5 YQ |
14628 | NULL, |
14629 | &show_always_inserted_mode, | |
14630 | &breakpoint_set_cmdlist, | |
14631 | &breakpoint_show_cmdlist); | |
f1310107 | 14632 | |
b775012e LM |
14633 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
14634 | condition_evaluation_enums, | |
14635 | &condition_evaluation_mode_1, _("\ | |
14636 | Set mode of breakpoint condition evaluation."), _("\ | |
14637 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 14638 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
14639 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
14640 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
14641 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
14642 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
14643 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 14644 | be set to \"host\"."), |
b775012e LM |
14645 | &set_condition_evaluation_mode, |
14646 | &show_condition_evaluation_mode, | |
14647 | &breakpoint_set_cmdlist, | |
14648 | &breakpoint_show_cmdlist); | |
14649 | ||
f1310107 TJB |
14650 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
14651 | Set a breakpoint for an address range.\n\ | |
14652 | break-range START-LOCATION, END-LOCATION\n\ | |
14653 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14654 | LINENUM, for that line in the current file,\n\ | |
14655 | FILE:LINENUM, for that line in that file,\n\ | |
14656 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 14657 | or the start of the range\n\ |
f1310107 TJB |
14658 | FUNCTION, for the first line in that function,\n\ |
14659 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14660 | *ADDRESS, for the instruction at that address.\n\ | |
14661 | \n\ | |
14662 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14663 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14664 | range (including START-LOCATION and END-LOCATION).")); | |
14665 | ||
e7e0cddf | 14666 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 14667 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 14668 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
14669 | location may be a linespec, explicit, or address location.\n" |
14670 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
14671 | set_cmd_completer (c, location_completer); |
14672 | ||
14673 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
14674 | dprintf_style_enums, &dprintf_style, _("\ | |
14675 | Set the style of usage for dynamic printf."), _("\ | |
14676 | Show the style of usage for dynamic printf."), _("\ | |
14677 | This setting chooses how GDB will do a dynamic printf.\n\ | |
14678 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
14679 | console, as with the \"printf\" command.\n\ | |
14680 | If the value is \"call\", the print is done by calling a function in your\n\ | |
14681 | program; by default printf(), but you can choose a different function or\n\ | |
14682 | output stream by setting dprintf-function and dprintf-channel."), | |
14683 | update_dprintf_commands, NULL, | |
14684 | &setlist, &showlist); | |
14685 | ||
e7e0cddf SS |
14686 | add_setshow_string_cmd ("dprintf-function", class_support, |
14687 | &dprintf_function, _("\ | |
590042fc PW |
14688 | Set the function to use for dynamic printf."), _("\ |
14689 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14690 | update_dprintf_commands, NULL, |
14691 | &setlist, &showlist); | |
14692 | ||
e7e0cddf SS |
14693 | add_setshow_string_cmd ("dprintf-channel", class_support, |
14694 | &dprintf_channel, _("\ | |
590042fc PW |
14695 | Set the channel to use for dynamic printf."), _("\ |
14696 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
14697 | update_dprintf_commands, NULL, |
14698 | &setlist, &showlist); | |
14699 | ||
d3ce09f5 SS |
14700 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
14701 | &disconnected_dprintf, _("\ | |
14702 | Set whether dprintf continues after GDB disconnects."), _("\ | |
14703 | Show whether dprintf continues after GDB disconnects."), _("\ | |
14704 | Use this to let dprintf commands continue to hit and produce output\n\ | |
14705 | even if GDB disconnects or detaches from the target."), | |
14706 | NULL, | |
14707 | NULL, | |
14708 | &setlist, &showlist); | |
14709 | ||
14710 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
14711 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
14712 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
14713 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
14714 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 14715 | |
491144b5 | 14716 | automatic_hardware_breakpoints = true; |
f3b1572e | 14717 | |
c90e7d63 SM |
14718 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
14719 | "breakpoint"); | |
14720 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
14721 | "breakpoint"); | |
c906108c | 14722 | } |